JP2000340087A - Sealed contact device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of a conduction failure by absorbing a step caused by the wear of a contact. SOLUTION: A slit 20 opened to the front face and both the side faces is formed in a supporting member 15 and a tongue piece 8d of a moving contact 8 is inserted into it. A projecting part 21 is formed nearly at the center of the lower surface inside the slit 20, and a hole part 8e for inserting the projecting part 21 is formed nearly at the center of the tongue piece 8d. When the moving contact 8 is supported by the supporting member 15, a gap is created between the tongue piece 8d and the upper surface of the slit 20. Therefore, even if a step is produced between each set of a fixed contact 3a and a moving contact 8c, the step can be absorbed by the gap. As a result, even if there is a step like the above, any couple of the fixed contact 3a and the moving contact 8c can be abutted on and electrically connected with each other, so that the occurrence of a conduction failure can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed contact device suitable for power load relays, electromagnetic switches, and the like.

[0002]

2. Description of the Related Art Conventionally, various types of sealed contact devices have been provided in which a fixed contact, a movable contact, and an opening / closing mechanism thereof are housed in a sealed container filled with hydrogen or a gas mainly composed of hydrogen. ing. FIGS. 24 and 25 show a sealed contact device already proposed by the present applicant. In a housing A, a box-shaped cover 2 having an open surface is hermetically bonded to a metal bonding member 4 brazed by a sheet braze 16 to a body 1 formed in a rectangular shape from an insulating material such as ceramic. Formed. Fixed terminal holes 1a, 1a are provided at two positions on the bottom surface of the body 1 at one end in the longitudinal direction of the body 1, respectively. The fixed terminals 3, 3 inserted into the fixed terminal holes 1a, 1a are formed in a substantially cylindrical shape. The fixed contact 3a is fixed to one end, and a flange 3b is provided at the other end. Thus, the fixed terminal 3 is inserted into the fixed terminal hole 1a via the sheet solder 3c, and the other end is inserted into the body 1
The fixed terminal 3 is hermetically joined to the body 1 by brazing the vicinity of the flange 3b to the body 1 in a state where the fixed terminal 3 protrudes from the body 1.

[0003] Also, coil terminal holes 1b, 1b are provided in two places at the other end of the bottom surface of the body 1, and coil terminals 17, which are inserted into the coil terminal holes 1b, 1b.
17 is formed in a substantially columnar shape provided with a flange portion 17a at one end. Thus, the coil terminals 17, 17 are fixed terminals 3, 3,
In the same manner as in (1), they are inserted into the coil terminal holes 1b, 1b via the sheet solder 17b, and are hermetically joined to the body 1.

[0004] The metal joining member 4 is for joining the sealing contact portion B and the driving portion C, and the surface on the side where the sealing contact portion B and the driving portion C are joined, respectively, has a longitudinal inner side. A pair of protruding pieces 4a, 4a and 4c, 4c protrude from the side surface, and support pieces 4b, 4d protrude from the inner surface in the width direction.

[0005] The sealed contact portion B is formed by joining a first insulating member 5 and a second insulating member 7. The first insulating member 5 includes a contact accommodating portion 5a forming a space for accommodating the contact.
And a pedestal part 5b. The contact accommodating portion 5a has a space formed therein, and an insulating wall 5a1 is provided in the space. The insulating wall 5a1 is erected in the axial direction at the center of the contact accommodating portion 5a in the longitudinal direction, and two spaces formed with the insulating wall 5a1 interposed therebetween are separate independent spaces 5a.
a2 and 5a2. In the spaces 5a2, 5a2 insulated by these insulating walls 5a1, two sets of contact portions each comprising a pair of movable contacts and fixed contacts are individually and separately accommodated.
As a result, the two sets of contact portions are separated into the respective spaces 5a2, 5a2.
Because it is arranged separately inside, the space in the outer direction and the inner direction of both contact portions can be configured to be substantially equal in size,
The space in which the arc generated at the time of contact opening and closing can be extended can be equalized, so that even if the current flows in either the forward or reverse direction, the breaking performance hardly changes and the forward and reverse mounting can be performed. In addition, since the insulating wall 5a1 is provided between both contact portions,
After contact opening / closing, insulation resistance between contacts due to accumulation of scattering of contacts is excellent. In addition, a concave portion 5a3 through which a movable contact 8 described later is inserted is formed at the upper end of the side surface of the contact accommodating portion 5a. The pedestal portion 5b is formed in a box shape having a dimension in the longitudinal direction and the width direction slightly larger than the contact accommodating portion 5a, and a pair of through holes 5b1 corresponding to the fixed terminal holes 1a of the body 1 and a metal A pair of contact portions 5b2 that contact the protruding pieces 4c of the joining member 4 are provided. A contact receiving portion 5a is provided upright on the upper surface, and communicates with the spaces 5a2, 5a2. This insulating member 5 is a contact portion 5 of the pedestal portion 5b.
b2 and one side surface thereof are brought into contact with a pair of protruding pieces 4c and 4d of the metal joining member 4, and the resilient force of the metal joining member 4 is used.
Fixed to At this time, the fixed terminals 3 hermetically joined to the body 1 are inserted into the through holes 5b1 of the pedestal portion 5b, and are separately disposed in the spaces 5a2, 5a2 provided in the contact accommodating portions 5a of the insulating member 5. .

The second insulating member 7 has a recess 7 on one end surface thereof.
a, and a projection 7b is formed in the recess 7a, and is formed in a box shape with the other end surface opened, and has a longitudinal dimension of a pedestal 5b constituting the first insulating member 5. Are formed to have substantially the same dimensions as those in the longitudinal direction. The second insulating member 7 is joined to the first insulating member 5 and the contact housing 5
A leaf spring 19 is disposed in the recess 7a to close the opening surface of the opening 7a. The leaf spring 19 is disposed between the cover 2 and the insulating member 7 and presses the insulating member 7 against the insulating member 5. The leaf spring 19 has a mounting hole 19a at the center and has a projection provided in the recess 7a. The portion 7b is inserted into the mounting hole 19a and disposed in the recess 7a. Thus, when the cover 2 is air-tightly joined to the metal joining member 4, the second insulating member 7 is pressed against the first insulating member 5 by the cover 2 and the leaf spring 19 to close the opening surface of the insulating member 5. .

The movable contact 8 is formed integrally with a pair of leg pieces 8a and a connecting piece 8b for connecting the base ends of the pair of leg pieces 8a, 8a bent at a substantially right angle. Movable contacts 8c, 8c are fixed to the lower surface of the portion of the piece 8a bent near the right angle in the vicinity of the tip end thereof. The movable contact 8 has legs in the spaces 5a2, 5a2 insulated by the insulating wall 5a1 of the insulating member 5 with a part of the connecting piece 8b inserted through the concave portion 5a3 provided in the first insulating member 5. Pieces 8a, 8a
Are respectively inserted to move the movable contacts 8c, 8c into the space 5a.
2, 5a2. Thus, in the spaces 5a2 and 5a2 provided in the contact accommodating portion 5a of the insulating member 5, two sets of contact portions each including the pair of movable contacts 8c and the fixed contacts 3a are separately and independently provided. .

The magnetic means 6 comprises a permanent magnet 6a and a U-shaped magnetic member 6b made of a magnetic material. A pair of permanent magnets 6a are mounted on the upper surface of the base 5b of the insulating member 5. The contact members 5a are brought into contact with both side surfaces of the contact accommodating portion 5a, and magnetic members 6b, 6b are attached to both ends thereof to be attached to the first insulating member 5. As a result, the magnetic means 6 forms the spaces 5a2 and 5a where the movable contact 8c and the fixed contact 3a exist.
A magnetic field is formed in a2, and the arc generated when both contacts are opened can be extinguished.

The driving section C includes a coil 9a, a coil bobbin 9
It comprises a contact driving electromagnet 9 comprising b and a fixed iron core 9 c, a yoke 10, and an amateur 12. The coil bobbin 9b has an insertion hole 9b1 into which the fixed iron core 9c is inserted in the axial direction, and is formed in a substantially cylindrical shape having a pair of terminal portions 9b2 protruding from the lower end thereof. The terminal portion 9b2 is formed in a substantially rectangular parallelepiped shape, and one end of a winding 9b3 is disposed inside each of the terminal portions 9b2, and is joined to the terminal plate 9d. Further, the terminal plate 9d and the coil terminal 17 are fixed by welding, caulking or the like. Also, the coil bobbin 9
A position regulating member 11 is attached to the upper end of b. The position regulating member 11 regulates the position of the armature 12 described later, is formed in a substantially U-shape, and has a regulating piece 11a at its tip. The fixed core 9c is formed in a substantially cylindrical shape having a flange 9c1 at one end, and is inserted into an insertion hole 9b1 provided in the coil bobbin 9a.

The yoke 10 is for forming a magnetic path together with an armature 12 to be described later. The yoke 10 is mounted on the mounting portion 10a on which the coil bobbin 9b is mounted, and is suspended from one end of the mounting portion 10a along the side surface of the coil bobbin 9b. And the side portion 10b to be formed is substantially L-shaped. The mounting portion 10a is provided with a through hole 10a1 communicating with the insertion hole 9b1 of the coil bobbin 9b at the center of the bottom surface, and has a narrow one end portion on the side portion 10b side. A pair of protruding pieces 10a2 that are in contact with the protruding pieces 4a of the member 4 are provided to protrude.
The side portion 10b has a pair of protrusions 10b1 for attaching a return spring 14 to be described later projecting from both side ends on the back surface thereof, and one end portion is formed to have the same size as one end portion of the mounting portion 10a. Thereby, the coil bobbin 9b
A concave portion 10c for disposing the terminal portion 9b2 is formed.

Thus, the terminal 9b2 provided at the lower end of the coil bobbin 9b is disposed in the recess 10c formed in the yoke 10, and the fixed core 9c is inserted into the through hole 10a1 to connect the coil bobbin 9b. Fix to iron 10. The yoke 10 is elastically fixed to the metal joining member 4 by bringing the projecting piece 10a2 into contact with the projecting piece 4a of the metal joining member 4 and bringing the side portion 10b into contact with the supporting piece 4b of the metal joining member 4.
As described above, the metal joining member 4 is formed with the pair of protruding pieces 4a and the supporting pieces 4b. In order to elastically fix the yoke 10 with the protruding pieces 4a and the supporting pieces 4b, the coil bobbin 9b is previously metal-joined with a jig or the like. When temporarily fixed to the member 4 and fixed to the metal joining member 4 after adjusting the height position or the mounting angle of the coil bobbin 9b, the amount of overtravel of the movable contact 8c can be adjusted, and the switching performance of the contact is stabilized. be able to.

The armature 12 is attracted to the fixed iron core 9c when the coil 9a is excited, and is formed in a thin plate shape. The contact pressure spring 13 has one end fixed to the armature 12 and the other end fixed to a support member 15 having insulating properties and supporting the movable contact 8. The armature 12 is attracted to the fixed iron core 9c, the movable contact 8c fixed to the tip of the movable contact 8 abuts on the fixed contact 3a, and the contact pressure spring 13 is bent by being further pushed in. The contact pressure can be obtained by the elastic force. The return spring 14 urges the movable contact 8 in a direction in which the movable contact 8c is separated from the fixed contact 3a, and has a fixing portion 14a having a pair of fixing holes 14c at both ends.
And a pair of leg pieces 14 extending from both ends of the fixing portion 14a.
b, and the leg piece 14b is formed by being bent in a substantially rectangular shape. One end of the leg piece 14b is fixed to the armature 12, and the other end of the leg piece 14b is fixed to fixing holes 14c provided at both ends of the fixing portion 14a.
The protrusion 10b1 provided on the side portion 10b of the yoke 10 described above.
Is fixed to the yoke 10. Insulating member 1
5 is the other end of the contact pressure spring 13 and the connecting piece 8 of the movable contact 8
b are each formed by insert molding and are formed in a substantially rectangular parallelepiped shape, and the length and height in the longitudinal direction are formed to be slightly shorter than those of the position regulating member 11 provided on the upper surface of the coil bobbin 9b. ing. Thus, when the movable contact 8c and the fixed contact 3a are separated from each other, the insulating member 15 is disposed in the position regulating member 11, and both ends thereof are regulated by the regulating pieces 11a provided at the tip of the position regulating member 11. Thus, the position of the amateur 12 is regulated.

[0013] The sealed contact device configured as described above includes:
It works as follows.

Before the coil 9a is excited, the movable contact 8c is opposed to the movable contact 3a with a contact gap. When the coil 9a is excited, the armature 12 is attracted to the fixed core 9c, and the contact pressure spring 13 fixed to the armature 12 and the movable contact 8 supported by the support member 15 are driven to move toward the fixed terminal 3. , Movable contact 8c is fixed contact 3a
Abut. After that, further amateur 12 fixed iron core 9
c, the contact pressure spring 13 bends and the contact pressure spring 1
The contact pressure can be obtained by the elastic force of 3.

When the excitation of the coil 9a is cut off, the armature 12 separates from the fixed core 9c, and the armature 12
The movable contact 8 fixed to the distal end of the contact pressure spring 13 via the insulating member 15 is driven, the movable contact 8c is separated from the fixed contact 3a, and the position of the insulating member 15 is regulated. The position of the armature 8 is regulated by contacting the regulating piece 11a of the member 11. Note that the two sets of contact portions composed of the pair of movable contacts 8c and the fixed contacts 3a are disposed in separate spaces 5a2 and 5a2, respectively, so that the outer and inner spaces of both contact portions are substantially equal. It can be configured in a size, the space where the arc generated at the time of opening and closing of the contacts is extended becomes equal, and even if the current flows in either the forward or reverse direction, the breaking performance is hardly changed and the forward and reverse mounting can be performed. In addition, since the insulating wall 5a1 is provided between the two contact portions, after the contacts are opened and closed, the insulation resistance between the contacts due to the accumulation of scattering of the contacts is excellent.

[0016]

By the way, in the above-mentioned conventional example, when the contact is repeatedly opened and closed, the fixed contact 3a and the movable contact 8c are consumed, and if the amount of wear is not uniform, each of the fixed contact 3a and the movable contact 8c is consumed. A step occurs between the sets. On the other hand, in the above-described conventional example, the thickness of the movable contact 8 cannot be reduced so much due to the current capacity. Therefore, the movable contact 8 is a substantially rigid body having high torsional rigidity. Accordingly, when the step is increased, the step cannot be absorbed by the movable contact 8, and finally, only one of the fixed contact 3a and the movable contact 8c is brought into contact conduction, and there is a possibility that conduction failure occurs.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a sealed contact device capable of absorbing a step caused by wear of a contact and preventing the occurrence of a conduction failure. To provide.

[0018]

According to a first aspect of the present invention, a plurality of fixed terminals having a fixed contact at one end and a plurality of fixed terminals which are in contact with and separated from the fixed contacts of the plurality of fixed terminals are provided. Forming a movable contact having a movable contact, a drive unit for driving the movable contact in a direction in which the movable contact and the fixed contact come and go, and an airtight space accommodating the fixed terminal, the movable contact and the drive unit; A housing, and an insulating member for isolating the inside of the housing into a plurality of spaces, wherein a plurality of contact portions including a pair of fixed contacts and a movable contact are respectively disposed in the space isolated by the insulating member. The movable contact is formed of a plurality of legs along a direction in which the movable contact is fixed to the distal end and the movable contact and the fixed contact are separated from each other, and a connecting piece for connecting each leg; Having the driving unit In the sealed contact device provided with a support member that supports the connecting piece and is provided with a slit having a width larger than the thickness of the connecting piece, at least a part of the connecting piece is inserted, A support is provided, wherein a protrusion is formed on one of a pair of side surfaces facing the connection piece inside the slit, and a hole into which the protrusion is fitted is formed in the connection piece. The gap formed between both side surfaces of the slit of the member and the connecting piece absorbs a step generated between each pair of the fixed contact and the movable contact, thereby preventing the occurrence of poor conduction.

According to a second aspect of the present invention, in the first aspect of the present invention, the convex portion is formed substantially at the center of a side surface of the slit, and a pair of side surfaces inside the slit are directed from the vicinity of the convex portion to both end portions of the slit. The gap formed between both sides of the slit of the support member and the connecting piece is increased, and the amount of absorption of the step generated between each pair of contacts is characterized in that the inclined face is inclined in a direction away from the connecting piece. Can be increased.

According to a third aspect of the present invention, in the first aspect of the present invention, a projection located on a side of the pair of side surfaces inside the slit where the convex portion is not formed is located deeper than the convex portion. And an elastic member for urging the connecting piece toward the side surface on which the convex portion is formed is provided between the side surface on which the protrusion is formed and the connecting piece. age,
In addition to the operation of the first aspect of the present invention, when the movable contact and the fixed contact come into contact with each other, the protrusion comes into contact with the connecting piece, so that the movable contact can be prevented from falling down.

According to a fourth aspect of the present invention, in the third aspect of the present invention, a recess is formed on at least a portion of the side surface of the slit where the protrusion is formed, where the elastic member is provided. In addition to the effect of the invention of Item 3, the elastic member can be prevented from coming off from the front of the slit by disposing the elastic member in the recess.

According to a fifth aspect of the present invention, in the third or fourth aspect of the present invention, the support member has protrusions formed at both ends of the slit. The protrusion prevents the elastic member from coming off from the side of the slit.

According to a sixth aspect of the present invention, there is provided a movable contact having a plurality of fixed terminals each having a fixed contact at one end and a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals. A drive unit for driving the movable contact in a direction in which the movable contact and the fixed contact come and go; a housing forming an airtight space in which the fixed terminal, the movable contact and the drive unit are housed; An insulating member that isolates the plurality of spaces from each other, and a plurality of contact portions each including a pair of fixed contacts and a movable contact are disposed in the space separated by the insulating member, and the movable contactor is provided. ,
The movable contact is fixed to the distal end, and is constituted by a plurality of leg pieces along the direction in which the movable contact and the fixed contact come and go, and a connecting piece for connecting each leg piece. In the sealed contact device provided with a supporting member provided to support the connecting piece, a bending portion that bends by a force applied in a contact direction between the movable contact and the fixed contact is provided on at least a part of the leg piece. The step formed between each contact pair of the fixed contact and the movable contact can be absorbed by the bending portion provided on the leg piece, and the occurrence of poor conduction can be prevented.

According to a seventh aspect of the present invention, there is provided a movable contact having a plurality of fixed terminals having a fixed contact at one end and a plurality of movable contacts which are in contact with and separated from the fixed contacts of the plurality of fixed terminals. And a drive unit for driving the movable contact in a direction in which the movable contact and the fixed contact come and go, a housing forming an airtight space in which the fixed terminal, the movable contact and the drive unit are housed, and An insulating member that isolates the plurality of spaces from each other, and a plurality of contact portions each including a pair of fixed contacts and a movable contact are arranged in the space separated by the insulating member, and the movable contactor is provided. ,
The movable contact is fixed to the distal end portion, and includes a plurality of leg pieces along a direction in which the movable contact and the fixed contact come and go, and a connecting piece for connecting each leg piece, and the connecting piece is provided in the driving unit and the connection is provided. In a sealed contact device provided with support means for supporting a piece, the support means has a fixing member having insulating properties and provided on the drive unit side, and a pair of holding pieces opposed by a substantially rigid body, and has a cross-sectional shape. And a holding member that is formed in a substantially U-shape and holds at least a part of the connection piece,
A bending portion which is bent by a force applied in a contact direction between the movable contact and the fixed contact is provided on a holding piece located on the movable contact side of the holding member, and a tip of the bending portion is provided for preventing the connection piece from coming off. The step formed between the fixed contact and the movable contact can be absorbed by the bending portion provided on the holding piece, and the occurrence of poor conduction can be prevented.

According to an eighth aspect of the present invention, there is provided a movable contact having a plurality of fixed terminals each having a fixed contact at one end and a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals. And a drive unit for driving the movable contact in a direction in which the movable contact and the fixed contact come and go, a housing forming an airtight space in which the fixed terminal, the movable contact and the drive unit are housed, and An insulating member that isolates the plurality of spaces from each other, and a plurality of contact portions each including a pair of fixed contacts and a movable contact are arranged in the space separated by the insulating member, and the movable contactor is provided. ,
The movable contact is fixed to the distal end portion, and includes a plurality of leg pieces along a direction in which the movable contact and the fixed contact come and go, and a connecting piece for connecting each leg piece, and the connecting piece is provided in the driving unit and the connection is provided. In a sealed contact device provided with support means for supporting a piece, the support means faces a fixed member having insulating properties and provided on the drive unit side, and a protruding piece protruding from a tip end of the fixed member. A pinching member for pinching at least a part of the connecting piece between the projecting piece and at least one of the pinching members having a bending portion that is bent by a force applied in a contact direction between the movable contact and the fixed contact. And a protrusion for preventing the connection piece from coming off is formed at a tip portion of the bending portion, and between the fixed contact and the movable contact by a bending portion provided on the holding member. Absorbs the steps that occur in It is possible to prevent the occurrence of through defects.

According to a ninth aspect of the present invention, in the eighth aspect of the present invention, projections for preventing the connection piece from coming off are formed at both ends of the fixing member. In addition, it is possible to prevent the movable contact from falling off from both ends of the fixed member.

According to a tenth aspect of the present invention, in order to achieve the above object, there is provided a movable contact having a plurality of fixed terminals having fixed contacts at one end and a plurality of movable contacts which are in contact with and separated from the fixed contacts of the plurality of fixed terminals. And a drive unit for driving the movable contact in a direction in which the movable contact and the fixed contact come and go, a housing forming an airtight space in which the fixed terminal, the movable contact and the drive unit are housed, and An insulating member that isolates the plurality of spaces from each other, and a plurality of contact portions each including a pair of fixed contacts and a movable contact are arranged in the space separated by the insulating member, and the movable contactor is provided. ,
The movable contact is fixed to the distal end portion, and includes a plurality of leg pieces along a direction in which the movable contact and the fixed contact come and go, and a connecting piece for connecting each leg piece, and the connecting piece is provided in the driving unit and the connection is provided. In a sealed contact device provided with support means for supporting a piece, the support means has a projecting piece projecting in a direction substantially perpendicular to a direction of contact and separation between the movable contact and the fixed contact having an insulating property. A fixing member provided on the drive unit side, and a fixing piece having an insertion hole protruding from an end of the connecting piece along a direction in which the movable contact and the fixed contact come into contact with and separated from each other, and into which the protruding piece is inserted. Wherein the distal end portion of the protruding piece inserted into the insertion hole is caulked and the fixing piece is rotatably fixed to the protruding piece,
A step generated between each contact pair of the fixed contact and the movable contact due to the rotation of the fixed piece is absorbed, and the occurrence of poor conduction can be prevented.

According to an eleventh aspect of the present invention, in order to achieve the above object, there is provided a movable contact having a plurality of fixed terminals having fixed contacts at one end and a plurality of movable contacts which are in contact with and separated from the fixed contacts of the plurality of fixed terminals. And a drive unit for driving the movable contact in a direction in which the movable contact and the fixed contact come and go, a housing forming an airtight space in which the fixed terminal, the movable contact and the drive unit are housed, and An insulating member that isolates the plurality of spaces from each other, and a plurality of contact portions each including a pair of fixed contacts and a movable contact are arranged in the space separated by the insulating member, and the movable contactor is provided. ,
The movable contact is fixed to the distal end portion, and includes a plurality of leg pieces along a direction in which the movable contact and the fixed contact come and go, and a connecting piece for connecting each leg piece, and the connecting piece is provided in the driving unit and the connection is provided. In a sealed contact device provided with support means for supporting a piece, the support means has a projecting piece projecting in a direction substantially perpendicular to a direction of contact and separation between the movable contact and the fixed contact having an insulating property. A fixing member provided on the drive unit side, and a fixing piece having an insertion hole protruding from an end of the connecting piece along a direction in which the movable contact and the fixed contact come into contact with and separated from each other, and into which the protruding piece is inserted. Wherein the distal end portion of the protruding piece inserted into the insertion hole is bent, and the fixing piece is rotatably locked and fixed to the protruding piece, wherein the fixing piece is Rotation generates a fixed contact and a movable contact between each contact pair. That step to absorb, it is possible to prevent the occurrence of conductive failure.

According to a twelfth aspect of the present invention, in order to achieve the above object, a plurality of fixed terminals having a fixed contact at one end and a plurality of movable terminals having a movable contact which comes into contact with and separates from the fixed contact of the plurality of fixed terminals are provided. A contact, a driving unit that drives each movable contact in a direction in which the movable contact and the fixed contact come and go, a housing that forms an airtight space in which the fixed terminal, the movable contact, and the driving unit are housed; An insulating member for isolating the inside of the housing into a plurality of spaces, a plurality of insulating members provided in the drive unit for supporting the movable contacts, and connecting the movable contacts with elasticity; And a plurality of contact portions each comprising a pair of fixed contacts and a movable contact are disposed in the space separated by the insulating member, and are connected by the conductive member. Multiple movable contacts Because but moving in independent absorbs step formed between each contact pair of the fixed contacts and the movable contact,
The occurrence of conduction failure can be prevented.

According to a thirteenth aspect of the present invention, in order to achieve the above object, there is provided a movable contact having a plurality of fixed terminals having fixed contacts at one end, and a plurality of movable contacts which are in contact with and separated from the fixed contacts of the plurality of fixed terminals. A drive unit for driving the movable contact in a direction in which the movable contact and the fixed contact come and go; a housing forming an airtight space in which the fixed terminal, the movable contact and the drive unit are housed; An insulating member for isolating the plurality of spaces, a plurality of contact portions consisting of a pair of fixed contacts and movable contacts is disposed in the space separated by the insulating member, respectively, in a sealed contact device, A holding member having an insulating property for holding the movable contact, and a spring fixed at one end to a driving portion of the driving portion and elastically holding the holding member between the other end and the driving portion; And a body, A rib having at least a portion having a curved shape is provided on a surface facing the driving portion of the holding member, and the holding member can swing with respect to the driving portion because the rib has a curved shape, This absorbs the step that occurs between each pair of fixed and movable contacts,
The occurrence of conduction failure can be prevented.

According to a fourteenth aspect, in the thirteenth aspect, a pressing piece for pressing the holding member toward the driving portion is provided near one end fixed to the driving portion of the spring body. In addition to the operation of the thirteenth aspect of the present invention, the movable contact can be prevented from falling down by pressing the holding member with the pressing piece.

The invention of claim 15 is the invention of claim 13 or 14
In the invention, a screw hole is provided in a portion of the holding member where a distance between the movable contact and the driving portion is shortened when the movable contact is driven in a direction in which the movable contact comes into contact with the fixed contact. 15. An adjusting screw which is screwed into the drive portion and has a variable amount of protrusion to the drive portion side, wherein the amount of protrusion of the adjustment screw is changed in addition to the operation of the invention according to claim 13 or 14. Allows the adjustment of the amount of overtravel.

[0033]

(Embodiment 1) Embodiment 1 of the present invention will be described with reference to FIGS. However, since the basic configuration and operation of this embodiment are the same as those of the conventional example, the same parts are denoted by the same reference numerals and description thereof is omitted.

As shown in FIG. 3A, a slit 20 is formed at the front end of the support member 15 facing the insulating member 5 and is opened on the front surface and both side surfaces. Inside the connecting piece 8 of the movable contact 8
A tongue piece 8d formed by projecting a part of b is inserted. The distance between the upper side surface 20a and the lower side surface 20b opposed to the tongue piece 8d inside the slit 20, that is, the width dimension of the slit 20 is set to be larger than the thickness dimension of the tongue piece 8d (connection piece 8b). A projection 21 is formed substantially at the center of the lower side surface 20b, and a hole 8e into which the projection 21 is fitted is formed substantially at the center of the tongue piece 8d. Here, the protrusion height of the protrusion 21 is set such that the gap between the tip of the protrusion 21 and the upper side surface 20a of the slit 20 is smaller than the thickness dimension of the tongue piece 8d. Thus, the support member 1
Insert the tongue piece 8d into the slit 20 from the front side of 5,
If the protrusion 21 formed on the lower surface 20b of the slit 20 is pushed into the hole 8e of the tongue piece 8d until it is inserted,
As shown in FIG. 1B, the hole 8 e is locked to the projection 21, so that the movable contact 8 can be attached to the support member 15 and supported. Here, as shown in FIGS. 1B and 3B, when the movable contact 8 is supported by the support member 15, the tongue piece 8d and the upper surface 20 of the slit 20 are provided.
so that the gap S ₁ is generated between the a.

As described in the conventional example, the coil terminals 17,
17 to energize the coil 9a,
2 is attracted to the fixed iron core 9c, and the contact pressure spring 13 fixed to the armature 12 and the movable contact 8 supported by the support member 15 are driven to move toward the fixed terminal 3, and the movable contact 8c is fixed. Contact 3a. Thereafter, when the amateur 12 further moves toward the fixed iron core 9c, the contact pressure spring 13
Is bent, and a contact pressure can be obtained by the elastic force of the contact pressure spring 13. Here, the fixed contact 3a and the movable contact 8c
Of the tongue piece 8d and the slit 2 even if
By the gap S ₁ occurring between the upper face 20a of the 0 can absorb the level difference. That is, since it is possible to tilt the movable contact 8 with respect to the support member 15 within the scope of the gap S _1, the fixed contact 3a of each pair, even if there is a step, as described above and the movable contact 8c
Can be brought into contact conduction, and occurrence of conduction failure can be prevented.

(Embodiment 2) In this embodiment, as shown in FIG. 4, the upper and lower side surfaces 20a and 20b inside the slit 20 provided in the support member 15 are in the vicinity of the convex portion 21 and the portion facing the convex portion 21. Is characterized in that it is an inclined surface (tapered surface) which is inclined in a direction away from the connecting piece 8b toward both ends of the slit 20, and other configurations and operations are common to those of the first embodiment. Description is omitted.

As described above, the upper and lower side surfaces 2 inside the slit 20
If the inclined surfaces 0a and 20b are inclined surfaces, the movable contact 8 can be inclined with respect to the support member 15, that is, the tongue piece 8d and the upper surface 20a and the lower surface 20b of the slit 20 can be inclined.
Can be greater than with which the gap S ₁ in the case of the gap S ₂ of the first embodiment occurs between the. Thus, there is an advantage that the amount of absorption of a step generated between each pair of contacts can be increased as compared with the first embodiment.

(Embodiment 3) In this embodiment, as shown in FIG. 5, a substantially hemispherical convex portion 22 is provided on an upper surface 20a inside a slit 20 provided in a support member 15, and a lower surface 20b A substantially hemispherical projection 23 is provided at a position deeper than the projection 22 of the movable contact 8. The tongue 8 d is placed between the tongue 8 d of the movable contact 8 inserted into the slit 20 and the lower side surface 20 b. It is characterized in that an elastic member 24 that urges toward the side surface 20a is provided, and other configurations and operations are the same as those in the first embodiment, so that illustration and description are omitted.

The protruding portion 22 and the protruding portion 23 are
The support member 15 is formed by molding the same resin material as the resin material 5 or by inserting a pin-shaped metal material into the support member 15. Further, the convex portion 22 has a diameter larger than the diameter of the hole 8e provided in the tongue piece 8d, and as shown in FIGS. Hole 8e of piece 8d
Will be inserted into

The elastic member 24 is formed by bending a plate-like spring material so as to extend obliquely from both ends of the flat main piece 24a and both ends of the main piece 24a, and to bend the distal end in the opposite direction. And a substantially V-shaped contact piece 24b formed integrally therewith. Thus, the tongue 8d of the movable contact 8 is inserted into the slit 20, and the upper surface 20a is inserted into the hole 8e of the tongue 8d.
Of the tongue piece 8d and the projection 23 in contact with the lower surface of the tongue piece 8d, the main piece 24a abuts on the lower surface of the tongue piece 8d, and the tip portions of both abutment pieces 24b, 24b Tongue piece 8d so as to abut against lower surface 20b
The movable contact 8 is attached to the support member 15 and is supported as shown in FIG.

According to the above configuration, since a gap is formed between the upper and lower side surfaces 20a, 20b inside the slit 20 and the tongue piece 8d, the fixed contact 3a and the movable contact 8c are consumed as in the first and second embodiments. Therefore, even when a step is generated between each pair of the fixed contact 3a and the movable contact 8c, the gap is absorbed by the gap to make the pair of the fixed contact 3a and the movable contact 8c contact with each other. And the occurrence of conduction failure can be prevented. In addition, a part of the substantially hemispherical convex portion 22 is fitted into the hole 8e of the tongue piece 8d and urged by the elastic member 24 from the opposite direction. The tongue piece 8d, that is, the movable contact 8 is made rotatable in the left-right direction in FIG. 5B by sliding on the outer peripheral surface, and the effect of absorbing the step can be enhanced. In addition, since the projection 23 is provided on the lower side 20b inside the slit 20 behind the projection 22 and the elastic member 24 is provided on the near side (front opening side), the movable contact inside the slit 20 is provided. 8
In the vertical direction (the driving direction of the movable contact 8).

By the way, the contact is in the ON state (fixed contact 3
a in contact with the movable contact 8c), the movable contact 8 is moved upward (clockwise in FIG. 5C) with respect to the support member 15 due to the contact pressure given by the contact pressure spring 13. Direction). However, in the present embodiment, the projection 23 is located on the lower side
Is provided, the lower surface of the tip of the tongue piece 8d abuts on the projection 23 when the contact is turned on, and the movable contact 8
Rotation (falling) can be suppressed.

(Embodiment 4) This embodiment is characterized in that, as shown in FIG. 6, a recess 25 is formed in at least a portion of the lower surface 20b inside the slit 20 where the elastic member 24 is provided. Other configurations and operations are the same as those of the third embodiment, so that illustration and description are omitted.

After inserting the elastic member 24 into the recess 25 from the side surface of the slit 20, the tongue piece 8d of the movable contact 8 is inserted from the front side of the slit 20 and provided on the upper side surface 20a inside the slit 20. The protruding portion 22 is connected to the hole 8e of the tongue piece 8d.
The movable contact 8 is attached to and supported by the support member 15.

In the structure of the third embodiment, the elastic member 24 provided inside the slit 20 is
The elastic member 24 may be disposed in the lower surface 20b inside the slit 20 by the elastic member 24.
The wall portion 25a located on the front side can prevent the elastic member 24 from coming off from the front of the slit 20.

(Embodiment 5) In this embodiment, as shown in FIG.
There is a feature in that 26 is formed, and other configurations and operations are common to the third embodiment, so that illustration and description are omitted.

After the elastic member 24 is inserted into the recess 25 from the front surface of the slit 20, the tongue piece 8d of the movable contact 8 is inserted from the front surface side of the slit 20, and the protrusion provided on the upper side surface 20a inside the slit 20 is formed. The movable contact 8 is attached to and supported by the support member 15 by fitting the portion 22 into the hole 8e of the tongue piece 8d.

In the structure of the third embodiment, the elastic member 24 provided inside the slit 20 is
There is a possibility that the elastic member 24 may fall off from the side of the slit 20 by forming the protruding pieces 26 on both ends of the slit 20. It can be carried out. If the elastic member 24 is arranged in the concave portion 25 formed on the lower surface 20b inside the slit 20 as in the fourth embodiment, the wall portion 25 located on the slit 20 front surface side of the concave portion 25 can be formed.
The protrusions 26 and 26 prevent the elastic member 24 from coming off from the front and side of the slit 20.

(Embodiment 6) In this embodiment, as shown in FIG. 8, a bending portion 8f which bends by a force applied in the contact direction between the movable contact 8c and the fixed contact 3a is formed by each leg 8a of the movable contact 8. , 8a is provided at the connection portion with the connection piece 8b, and other configurations and operations are common to those of the conventional example, so that illustration and description thereof are omitted.

The bent portion 8f is formed by, for example, hitting the above-mentioned portions of the leg pieces 8a, 8a to reduce the thickness dimension and to be bent in a bellows shape. Thus, the fixed contact 3
a and the movable contact 8c are worn out so that a step is generated between each pair of the fixed contact 3a and the movable contact 8c.
Since the step can be absorbed by the bending portion 8f provided on the leg pieces 8a, 8a, each pair of the fixed contact 3a and the movable contact 8c can be brought into contact and conduction, and occurrence of conduction failure can be prevented. Can be prevented.

(Embodiment 7) In this embodiment, as shown in FIG. 9, a pair of holding members 27, which have insulating properties and are attached to the distal end of the pressure spring 13, are opposed by a substantially rigid body. 2
And a holding member 28 having a substantially U-shaped cross section and having at least a portion of the connecting piece 8b of the movable contact 8 and a movable contact side of the holding member 28 (FIG. 9).
(Lower side in FIG. 2) is characterized in that a bellows-like bending portion 28c is provided on the holding piece 28b and a projection 28d is formed at the tip of the bending portion 28c. Since other configurations and operations are common to those of the conventional example, illustration and description are omitted.

A portion projecting from the rear end of the upper holding piece 28a of the holding member 28 is insert-molded into a fixing member 27 made of synthetic resin. The lower holding piece 28b is bifurcated, and the entire body is knocked out to reduce the thickness dimension and bend in a bellows shape to form a bent portion 28c.

The connecting piece 8b of the movable contact 8 has a substantially T-shaped T-shaped piece 8g protruding therefrom. The movable contact 8 is fixed to the fixed member 27 by being sandwiched. At this time, the protrusion 28d at the tip of the bending portion 28c formed on the lower holding piece 28b is connected to the neck 8h of the T-shaped piece 8g.
In order to prevent the rotation of the T-piece 8g from the holding piece 28, the rotation of the T-piece 8g can be prevented.

According to the above configuration, since the bending portion 28c is provided on the lower holding piece 28b, the fixed contact 3a and the movable contact 8c are consumed, and the step between each pair of the fixed contact 3a and the movable contact 8c is stepped. Even when the bent portion 28
c allows the movable contact 8 to be tilted, thereby absorbing the step and allowing each pair of the fixed contact 3a and the movable contact 8c to be brought into contact conduction, thereby preventing occurrence of conduction failure. be able to.

(Embodiment 8) In this embodiment, as shown in FIG. 10, a fixing member 27 which is insulative and is attached to the distal end portion of the contact pressure spring 13, and is protruded from the distal end portion of the fixing member 27. Holding member 2 for holding at least a part of the connecting piece 8b of the movable contact 8 between the projecting piece 27a and the projecting piece 27a.
9 is provided, and at least a part of the holding member 29 is provided with a bellows-like bending portion 29a, and a projection 29b is formed at a tip portion of the bending portion 29a. In addition,
Since other configurations and operations are common to those of the conventional example, illustration and description are omitted.

The holding member 29 has flexible portions 29a, 2 at both ends.
9a is provided and formed in a substantially U-shape as a whole, and a portion protruding from the rear end is insert-molded into a fixing member 27 made of synthetic resin. The bending portions 29a, 29a are formed by tapping a plate-shaped metal material to reduce the thickness dimension with respect to other portions and to be bent in a bellows shape.

On the other hand, the connecting piece 8b of the movable contact 8 is provided with a substantially T-shaped T-shaped piece 8g like the seventh embodiment, and the projecting piece 27a of the fixed member 27, the holding member 29 and The movable contact 8 is fixed to the fixed member 27 by holding the T-shaped piece 8g inserted from the front between the protruding piece 27a and the holding member 29. At this time, since the projection 29c formed at the tip of the bending portion 29b formed on the holding member 29 is locked to the neck 8h of the T-piece 8g, it is necessary to prevent the T-piece 8g from coming off the holding member 29. It is designed to prevent rotation.

According to the above configuration, the projecting piece 2 of the fixing member 27
7a, bending portions 29b, 29b are provided on a holding member 29 for holding a part (T-shaped piece 8g) of the connecting piece 8b of the movable contact 8.
Is provided, even if the fixed contact 3a and the movable contact 8c are worn and a step is generated between each pair of the fixed contact 3a and the movable contact 8c, the movable contact is formed by the bending portions 29b, 29b. 8 can be tilted, thereby absorbing the above-mentioned step and making each pair of the fixed contact 3a and the movable contact 8c contact and conduct, thereby preventing the occurrence of poor conduction. Moreover, the holding member 2
9 has a simpler shape than the holding member 28 in the seventh embodiment, so that there is an advantage that component processing becomes easier.

(Embodiment 9) In this embodiment, as shown in FIG.
It is characterized in that projections 27b, 27b are formed downward at both ends of 7a, and other configurations and operations are the same as those of the eighth embodiment, so that illustration and description are omitted.

As in the eighth embodiment, a T-shaped piece 8g inserted from the front between the projecting piece 27a of the fixing member 27 and the holding member 29 is movable by being held by the projecting piece 27a and the holding member 29. The contact 8 is fixed to the fixing member 27.

In the structure of the eighth embodiment, there is a possibility that the T-shaped piece 8g of the movable contact 8 may fall out of the gap between the protruding piece 27a and the holding member 29. The projections 27b, 2 are directed downward (toward the holding member 29) at both ends.
7b, these projections 27b, 2
7b can prevent the T-shaped piece 8g from falling off from the side.

(Embodiment 10) As shown in FIG. 12, this embodiment has a projecting piece 31 projecting in a direction substantially perpendicular to the direction of contact and separation between the movable contact 8c and the fixed contact 3a. A fixing member 30 fixed to the spring 13 and a fixing member having an insertion hole 8j projecting from the end of the connecting piece 8b in the direction of contact between the movable contact 8c and the fixed contact 3a, and into which the projecting piece 31 is inserted. And the fixing piece 8i is rotatably fixed to the protruding piece 31 by caulking the tip of the protruding piece 31 inserted into the insertion hole 8j. Since the configuration and operation are common to those of the conventional example, illustration and description are omitted.

The protruding piece 31 is formed of a metal material into a substantially prismatic shape, and is a fixing member 30 made of synthetic resin having an insulating property.
The end portion is formed by insert molding, and protrudes from the front surface of the fixing member 30. On the other hand, the insertion hole 8j provided in the fixed piece 8i of the movable contact 8 is a rectangular shape according to the shape of the protruding piece 31. By fixing, the fixed piece 8i is fixed to the protruding piece 31. As a result, the movable contact 8 is fixed to the fixed member 30.

Here, the high spin caulking is a method in which the caulked portion is spread and caulked by applying pressure, so that the fixed piece 8 i can be rotated with respect to the protruding piece 31 due to rattling. Thus, even when the fixed contact 3a and the movable contact 8c are worn out and a step is generated between each pair of the fixed contact 3a and the movable contact 8c, the fixed piece 8i rotates with respect to the protruding piece 31. Since the step can be absorbed by the movement, any one of the pair of fixed contacts 3a and the movable contact 8c can be brought into contact and conduction, and the occurrence of conduction failure can be prevented. The shape of the protruding piece 31 is not limited to a prismatic shape, but may be another shape, for example, a columnar shape having an elliptical cross-sectional shape.

(Embodiment 11) In this embodiment, as shown in FIG. 13, the shape of a metal projecting piece 31 projecting from the front surface of a fixing member 30 is substantially L-shaped, and a connecting piece of a movable contact 8 is formed. The projecting piece 31 is inserted into the insertion hole 8j of the fixing piece 8i projecting from the projection 8b.
Is inserted, and then the fixing piece 8i is rotatably locked and fixed to the protruding piece 31 by bending the distal end portion of the protruding piece 31. Other configurations and operations are the same as those of the related art. Illustration and description are omitted because they are common to the example and the tenth embodiment.

Thus, the fixed contact 3a and the movable contact 8c
Of the fixed contact 3a and the movable contact 8c, and the fixed piece 8i
1 can absorb the level difference, so that each pair of fixed contact 3a and movable contact 8
c can be brought into contact conduction, and occurrence of conduction failure can be prevented. Moreover, as compared with the work of caulking the protruding piece 31 and fixing the movable contact 8 to the fixing member 30 as in the tenth embodiment, the fixing work is simplified because only the protruding piece 31 needs to be bent. There are advantages.

(Twelfth Embodiment) A twelfth embodiment of the present invention will be described with reference to FIGS. However, since the basic configuration and operation of this embodiment are the same as those of the conventional example, the same parts are denoted by the same reference numerals and description thereof is omitted.

One end of each of the band-shaped contact pressure springs 32, 32 is fixed to the armature 12, and the other end of each of the contact pressure springs 32, 32 is insert-molded into a support member 33, 33 made of synthetic resin. I have. One end of each of the movable contacts 34, 34 is insert-molded on each of the support members 33, 33. The movable contacts 34, 34 are formed in a substantially hook shape by bending both ends of a strip-shaped metal member in opposite directions, and one end is insert-molded to the support members 33, 33, The movable contacts 34a, 34a are fixed to the ends. The support members 33, 33 of the two movable contacts 34, 34 are mechanically and electrically connected by a conductive member having elasticity, for example, a braided wire 35.

As described in the conventional example, the coil terminals 17,
17 to energize the coil 9a,
2 is attracted to the fixed iron core 9c, and the contact pressure springs 32, 32 fixed to the armature 12 and the movable contacts 34, 34 supported by the support members 33, 33 are driven to move toward the fixed terminal 3, The movable contacts 34a, 34a fixed to the tips of the movable contacts 34, 34 are fixed contacts 3 respectively.
a, 3a. Thereafter, when the armature 12 further moves toward the fixed iron core 9c, the contact pressure springs 32, 32 are bent, and the contact pressure can be obtained by the elastic force of the contact pressure springs 32,32. Here, the fixed contact 3a and the movable contact 3
Even when the contact 4a is worn and a step is generated between each pair of the fixed contact 3a and the movable contact 34a, the two movable contacts 34, 34 connected by the elastic braided wire 35 are independent. As a result, the pair of fixed contacts 3a and the movable contacts 34a can be brought into contact and conduction with each other by absorbing the above-mentioned steps, and occurrence of conduction failure can be prevented.

It should be noted that the movable contact 3
If the thickness of the 4 ', 34' can be reduced, the movable contacts 34 ', 34' made of a plate-like spring material are insert-molded into the support member 33 'as shown in FIG. The connection may be made by 35. In this case, the step can be absorbed by the elastic force of the movable contacts 34 'and 34'.

(Thirteenth Embodiment) A thirteenth embodiment of the present invention will be described with reference to FIGS. However, since the basic configuration and operation of this embodiment are the same as those of the conventional example, the same parts are denoted by the same reference numerals and description thereof is omitted.

The movable contact 8 is attached to the holding member 36 made of synthetic resin.
A portion projecting from the connecting piece 8b is insert-molded. A rectangular opening 36a is provided on the upper surface of the holding member 36.
Is provided on the lower surface, and an opening 36b smaller than the opening 36a is provided, and both openings 36a and 36b are communicated with each other. Further, the lower surface opening 36 inside the holding member 36
As shown in FIG. 18 (b), a locking projection 36c, which locks a locking projection 37c of the contact pressure spring 37 described later, protrudes near b. Further, substantially semi-cylindrical ribs 36d, 36d protrude from the lower surface of the holding member 36 near both ends sandwiching the opening 36b, as shown in FIG.

The contact pressure spring 37, which is a spring body, comprises a main body 37a having a locking projection 37c at the front end and a substantially U-shaped fixing piece 37b integrally formed at the rear end. Piece 3
Both ends of 7b are fixed to the armature 12 by an appropriate method such as caulking. Further, the distal end portion of the main body 37a of the contact pressure spring 37 is inserted into the holding member 36 through the lower opening 36b while being fixed to the armature 12, and the locking projection 37c provided at the distal end portion of the main body 37a is inserted. The retaining member 36 is retained by the retaining projection 36c. In this state, as shown in FIG. 18B, the holding member 36 is pressed and fixed toward the armature 12 by the contact pressure spring 37, and the ribs 36d and 36 protruding from the lower surface of the holding member 36 are provided.
The peripheral surface of d is in contact with the amateur 12.

As described in the conventional example, the coil terminals 17,
17 to energize the coil 9a,
2 is attracted to the fixed iron core 9c, the contact pressure spring 37 fixed to the armature 12 and the movable contact 8 held by the holding member 36 are driven to move toward the fixed terminal 3, and the tip of the movable contact 8 is moved. The movable contacts 8c, 8c fixed to the portions contact the fixed contacts 3a, 3a, respectively. Thereafter, when the armature 12 further moves toward the fixed iron core 9c, the holding member 36 is pivoted around the rear end side rib 36d as shown in FIG.
In order to rotate clockwise in, the holding member 3
The contact pressure spring 37 is bent by 6, and the contact pressure can be obtained by the elastic force of the contact pressure spring 37. Here, the holding member 36 has ribs 36d, 36d formed in a substantially semi-cylindrical shape.
The holding member 36 is swingable with respect to the armature 12 in the circumferential direction of the ribs 36 d, 36 d with respect to the armature 12. As a result, the fixed contact 3a
Even if the movable contact 8c is worn out and a step is generated between each pair of the fixed contact 3a and the movable contact 8c, the holding member 36 can swing with respect to the armature 12, so that the holding member The movable contact 8 held at 36 can be tilted, and the above-mentioned step can be absorbed to make each pair of the fixed contact 3a and the movable contact 8c contact conductive. Generation can be prevented.

(Embodiment 14) In this embodiment, as shown in FIG. 20, a substantially hook-shaped pressing piece 37d protrudes from a fixed piece 37b of the contact pressure spring 37, and the holding member 36 is amateurd by the pressing piece 37d. It is characterized in that it is pressed toward twelfth, and the other configurations and operations are common to the conventional example and the thirteenth embodiment.

In the structure of the thirteenth embodiment, since the holding member 36 is fixed to the armature 12 only by the main body 37a of the contact pressure spring 37, the fixed contact 3a and the movable contact 8
When the movable contact 8 is driven in the contact separating direction in the case where c is welded, the rear end of the holding member 36 floats up from the armature 12, and the welded fixed contact 3a and the movable contact 8c are detached. The tripping force decreases. However, in the configuration of the present embodiment, the pressing piece 37d for pressing the rear end of the holding member 36 toward the armature 12 is provided on the contact pressure spring 37. Can be prevented from rising (falling down), whereby a drop in the tripping force at the time of welding the contacts can be prevented.

(Embodiment 15) In this embodiment, as shown in FIG. 21, a screw hole 36e serving as an internal thread is provided at the rear end of the holding member 36, and the screw hole 36e is screwed into the armature 12 side. Adjustable screw 3 with variable amount of protrusion
8 and the other configuration and operation are common to those of the conventional example and the thirteenth embodiment.

The screw hole 36e is formed in the opening 3 of the holding member 36.
It is provided at the rear end behind 6a, 36b so as to penetrate from the upper surface to the lower surface. For this reason, in this embodiment, the rib 36d is not provided on the rear end side of the holding member 36. The adjusting screw 38 has a substantially spherical tip, and is screwed into the screw hole 36 e so that the tip projects toward the lower surface of the holding member 36. Since the tip of the adjusting screw 38 protruding from the lower surface of the holding member 36 comes into contact with the armature 12, the amount of inclination of the holding member 36 with respect to the armature 12 by changing the amount of protrusion of the adjusting screw 38, that is, The amount of overtravel of the movable contact 8c can be adjusted. In addition, since the distal end of the adjusting screw 38 abutting on the armature 12 is formed in a substantially spherical shape, the holding member 36 is formed on the armature 12 in the circumferential direction of the rib 36d and the distal end of the adjusting screw 38 as in the thirteenth embodiment. Can be swung, and the fixed contact 3a and the movable contact 8c are worn out, and the fixed contact 3a and the movable contact 8 are
Even when there is a step between each pair of c, the movable contact 8 held by the holding member 36 can be inclined, and the above-described step is absorbed to make a pair of each pair. Both the fixed contact 3a and the movable contact 8c can be brought into contact and conduction, and the occurrence of conduction failure can be prevented.

Here, as shown in FIG. 22, the structure of the present embodiment is combined with the structure of the fourteenth embodiment to
Inserting hole 37 through which adjustment screw 38 is inserted into pressing piece 37d
The adjusting screw 38 may be screwed into the screw hole 36e of the holding member 36 through the insertion hole 37e of the pressing piece 37d. With this configuration, there is an advantage that not only the absorption of the step and the adjustment of the amount of overtravel but also a reduction in the tripping force at the time of contact welding can be prevented as in the fourteenth embodiment.

Further, as shown in FIG. 23, if the width of the pressing piece 37d provided on the contact pressure spring 37 is made substantially the same as the width of the holding member 36, the pressing force of the pressing piece 37d is increased so that the contact piece is welded. The drop of the tripping force can be prevented more reliably.

[0081]

According to the first aspect of the present invention, there is provided a movable contact having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and the movable contact. A drive unit that drives the movable contact in a direction in which the fixed contact comes and goes, a housing that forms an airtight space in which the fixed terminal, the movable contact and the drive unit are housed, and the interior of the housing is separated into a plurality of spaces. A plurality of contact portions each comprising a pair of fixed contacts and a movable contact are disposed in the space separated by the insulating member, and the movable contact is provided at a distal end portion with a movable contact. Are fixed and a plurality of legs along the direction in which the movable contact and the fixed contact come and go, and a connecting piece for connecting each of the legs. A support member that supports the piece In the sealed contact device provided, at least a part of the connecting piece is inserted, and a slit having a width larger than the thickness of the connecting piece is provided on the front surface of the support member, and faces the connecting piece inside the slit. Since a convex portion is formed on one of the pair of side surfaces and a hole into which the convex portion is fitted is formed in the connection piece, a gap generated between both side surfaces of the slit of the support member and the connection piece. In addition, there is an effect that a step generated between each contact pair of the fixed contact and the movable contact is absorbed, and occurrence of a conduction failure can be prevented.

According to a second aspect of the present invention, the convex portion is formed substantially at the center of the side surface of the slit, and a pair of side surfaces inside the slit are directed away from the connecting piece from near the convex portion to both ends of the slit. Since the inclined surface is formed as an inclined surface, a gap generated between both side surfaces of the slit of the support member and the connecting piece is increased, and there is an effect that the amount of absorption of a step generated between each pair of contacts can be increased.

According to a third aspect of the present invention, a projection located at a position farther than the projection is formed on a side of the pair of side surfaces inside the slit where the projection is not formed. The elastic member for urging the connecting piece toward the side surface on which the convex portion is formed is provided between the side surface on which the portion is formed and the connecting piece. In addition, when the movable contact and the fixed contact come into contact with each other, the protrusion comes into contact with the connecting piece, so that the movable contact can be prevented from falling down.

According to a fourth aspect of the present invention, in addition to the effect of the third aspect, a recess is formed in at least a portion of the side surface of the slit where the protrusion is formed, where the elastic member is provided. By disposing the elastic member in the recess, there is an effect that the elastic member can be prevented from coming off from the front of the slit.

According to the fifth aspect of the present invention, the projecting pieces are formed at both ends of the slit of the support member. There is an effect that the retaining can be performed.

According to a sixth aspect of the present invention, there is provided a mobile terminal having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and A drive unit for driving the movable contact in the direction in which the contacts come and go; a housing forming an airtight space in which the fixed terminal, the movable contact and the drive unit are housed; and an insulation for isolating the inside of the housing into a plurality of spaces. A plurality of contact portions each comprising a pair of fixed contacts and a movable contact are disposed in the space separated by the insulating member, and the movable contact is fixed to a distal end portion of the movable contact. It is composed of a plurality of legs along the direction in which the movable contact and the fixed contact come and go, and a connecting piece for connecting each leg,
In a sealed contact device provided with a supporting member provided on the driving portion and having an insulating property to support the connecting piece, a bending portion that bends by a force applied in a contact direction between the movable contact and the fixed contact includes the leg. Since it is provided on at least a part of the piece, a step formed between each contact pair of the fixed contact and the movable contact can be absorbed by the bending portion provided on the leg piece, thereby preventing the occurrence of conduction failure. There is.

According to a seventh aspect of the present invention, there is provided a movable contact having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and A drive unit for driving the movable contact in the direction in which the contacts come and go; a housing forming an airtight space in which the fixed terminal, the movable contact and the drive unit are housed; and an insulation for isolating the inside of the housing into a plurality of spaces. A plurality of contact portions each comprising a pair of fixed contacts and a movable contact are disposed in the space separated by the insulating member, and the movable contact is fixed to a distal end portion of the movable contact. It is composed of a plurality of legs along the direction in which the movable contact and the fixed contact come and go, and a connecting piece for connecting each leg,
In a sealed contact device provided with a support unit provided on the drive unit to support the connecting piece, the support unit is insulative and is opposed to a fixing member provided on the drive unit side by a substantially rigid body. A holding member that has a pair of holding pieces and has a substantially U-shaped cross section and holds at least a part of the connection piece; and the holding piece positioned on the movable contact side of the holding member includes the movable member. Since a bending portion that bends due to a force applied in the contact direction between the contact and the fixed contact is provided, and a protrusion for preventing the connection piece from coming off is formed at a tip portion of the bending portion, a bending portion provided on the holding piece is provided. Absorbs the step created between each pair of fixed and movable contacts,
There is an effect that occurrence of a conduction failure can be prevented.

The invention according to claim 8 is a movable contact having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and a fixed contact with the movable contact. A drive unit for driving the movable contact in the direction in which the contacts come and go; a housing forming an airtight space in which the fixed terminal, the movable contact and the drive unit are housed; and an insulation for isolating the inside of the housing into a plurality of spaces. A plurality of contact portions each comprising a pair of fixed contacts and a movable contact are disposed in the space separated by the insulating member, and the movable contact is fixed to a distal end portion of the movable contact. It is composed of a plurality of leg pieces along the direction in which the movable contact and the fixed contact come and go, and a connecting piece that connects each leg piece,
In a sealed contact device provided with a support means provided on the drive unit to support the connecting piece, the support means has an insulating member provided on the drive unit side, and a distal end of the fixed member. And a holding member that faces at least a part of the connecting piece between the projecting piece and the projecting piece, and is bent by a force applied in a contact direction between the movable contact and the fixed contact. Since a bending portion is provided on at least a part of the holding member and a protrusion for preventing the connection piece from being formed is formed at a distal end portion of the bending portion, the fixed contact and the movable contact are formed by the bending portion provided on the holding member. There is an effect that a step generated between each pair of contacts can be absorbed to prevent the occurrence of conduction failure.

According to the ninth aspect of the present invention, since the protrusions for preventing the connection piece from being removed are formed at both ends of the fixing member,
In addition to the effect of the invention of claim 8, there is an effect that the movable contact can be prevented from falling off from both ends of the fixed member.

A tenth aspect of the present invention is a movable contact having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and A drive unit for driving the movable contact in a direction in which the contacts come and go; a housing forming an airtight space in which the fixed terminal, the movable contact and the drive unit are accommodated; and an insulation for isolating the inside of the housing into a plurality of spaces. And a plurality of contact portions comprising a pair of fixed contacts and a movable contact are respectively disposed in the space separated by the insulating member, and the movable contact is fixed to a distal end portion of the movable contact. A plurality of legs along the direction in which the movable contact and the fixed contact come and go, and a connecting piece for connecting each of the legs, and a supporting means provided on the drive unit and supporting the connecting piece. Equipped seal In the point device, the supporting means has an insulating property, and has a protruding piece protruding in a direction substantially perpendicular to a direction of contact and separation between the movable contact and the fixed contact, and a fixing member provided on the driving unit side. A fixing piece having an insertion hole into which the movable contact and the fixed contact protrude from an end of the connecting piece along the contact / separation direction of the fixed contact, and the insertion piece into which the protruding piece is inserted. Since the tip of the protruding piece is caulked and the fixing piece is rotatably fixed to the protruding piece, the fixing piece rotates to allow the fixed contact and the movable contact to move between the fixed contact and the movable contact. Absorb the resulting steps,
There is an effect that occurrence of a conduction failure can be prevented.

An eleventh aspect of the present invention is directed to a movable contact having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and A drive unit for driving the movable contact in a direction in which the contacts come and go; a housing forming an airtight space in which the fixed terminal, the movable contact and the drive unit are accommodated; and an insulation for isolating the inside of the housing into a plurality of spaces. And a plurality of contact portions each comprising a pair of fixed contacts and a movable contact are disposed in the space separated by the insulating member, and the movable contact is fixed to a tip portion of the movable contact. A plurality of legs along the direction in which the movable contact and the fixed contact come and go, and a connecting piece for connecting each of the legs, and a supporting means provided on the drive unit and supporting the connecting piece. Equipped seal In the point device, the supporting means has an insulating property, and has a protruding piece protruding in a direction substantially perpendicular to a direction of contact and separation between the movable contact and the fixed contact, and a fixing member provided on the driving unit side. A fixing piece having an insertion hole into which the movable contact and the fixed contact protrude from an end of the connecting piece along the contact / separation direction of the fixed contact, and the insertion piece into which the protruding piece is inserted. Since the tip of the protruding piece is bent and the fixed piece is rotatably locked and fixed to the protruding piece, each pair of the fixed contact and the movable contact is rotated by the rotation of the fixed piece. There is an effect that a step generated between them can be absorbed to prevent occurrence of conduction failure.

[0092] The twelfth aspect of the present invention is a mobile terminal, comprising: a plurality of fixed terminals having a fixed contact at one end; A drive unit that drives each movable contact in a direction in which the fixed contact comes and goes, a housing that forms an airtight space in which the fixed terminal, the movable contact, and the drive unit are housed; An insulating member, comprising a plurality of support members having insulating properties and provided in the drive unit and supporting the movable contacts, and a conductive member having elasticity and connecting between the movable contacts, Since a plurality of contact portions including a pair of fixed contacts and a movable contact are respectively disposed in the space separated by the insulating member, the plurality of movable contacts connected by the conductive member are independently formed. Fixed connection to move And to absorb the level difference caused between each contact pair of the movable contact, there is an effect that it is possible to prevent the occurrence of conductive failure.

According to a thirteenth aspect of the present invention, there is provided a movable contact having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and A drive unit for driving the movable contact in the direction in which the contacts come and go; a housing forming an airtight space in which the fixed terminal, the movable contact and the drive unit are housed; and an insulation for isolating the inside of the housing into a plurality of spaces. A sealed contact device comprising a plurality of contact portions each comprising a pair of fixed contacts and a movable contact, each of which is disposed in the space separated by the insulating member. A holding member for holding the child, a spring body fixed at one end to a driving portion of the driving portion and elastically holding the holding member between the other end and the driving portion; Facing the drive part of Since at least a part of the surface is provided with a rib having a curved surface, the holding member can swing with respect to the driving portion because the rib has the curved surface, whereby each contact pair of the fixed contact and the movable contact is provided. There is an effect that a step generated between them can be absorbed to prevent the occurrence of conduction failure.

According to a fourteenth aspect of the present invention, a pressing piece for pressing the holding member toward the driving part is provided near one end fixed to the driving part of the spring body.
In addition to the effect of the third aspect, there is an effect that the movable contact can be prevented from falling down by pressing the holding member with the pressing piece.

According to a fifteenth aspect of the present invention, when the movable contact is driven in a direction in which the movable contact is brought into contact with the fixed contact, a screw hole is formed in a portion of the holding member where the facing distance with the driving portion becomes short. An adjusting screw is provided, the adjusting screw being screwed into the screw hole so that the amount of protrusion toward the drive portion can be changed. Therefore, in addition to the effects of the invention according to claim 13 or 14, the amount of protrusion of the adjusting screw is provided. Has the effect that the amount of overtravel can be adjusted.

[Brief description of the drawings]

FIGS. 1A and 1B show a first embodiment, in which FIG. 1A is a plan view with a cover removed, and FIG. 1B is a side sectional view with a cover attached.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 shows a main part of the above, (a) is an exploded perspective view,
(B) is a side sectional view.

4A and 4B show a main part of the second embodiment, in which FIG. 4A is an exploded perspective view, and FIG.

5A and 5B show a main part of the third embodiment, wherein FIG. 5A is an exploded perspective view, FIG. 5B is a side sectional view, and FIG. 5C is another side sectional view.

FIG. 6 is an exploded perspective view showing a main part of a fourth embodiment.

FIG. 7 is an exploded perspective view showing a main part of a fifth embodiment.

FIG. 8 is an exploded perspective view showing a main part of a sixth embodiment.

FIG. 9 is an exploded perspective view showing a main part of a seventh embodiment.

FIG. 10 is an exploded perspective view showing a main part of an eighth embodiment.

FIG. 11 is an exploded perspective view showing a main part of a ninth embodiment.

FIG. 12 is an exploded perspective view showing a main part of a tenth embodiment.

FIG. 13 is an exploded perspective view showing a main part of the eleventh embodiment.

14A and 14B show a twelfth embodiment, in which FIG. 14A is a plan view with a cover removed, and FIG. 14B is a side cross-sectional view with a cover attached.

FIG. 15 is an exploded perspective view of the same.

FIG. 16 is a plan view of a main part of the above.

FIG. 17 is a plan view of relevant parts showing another configuration of the above.

FIGS. 18A and 18B show a main part of the thirteenth embodiment, wherein FIG. 18A is an exploded perspective view, and FIG.

FIG. 19 is an exploded perspective view showing a main part of the above.

FIGS. 20A and 20B show an essential part of the fourteenth embodiment, wherein FIG. 20A is an exploded perspective view, and FIG.

FIGS. 21A and 21B show a main part of the fifteenth embodiment, in which FIG. 21A is an exploded perspective view, and FIG.

FIGS. 22A and 22B show another configuration of the above, wherein FIG. 22A is a plan view with the cover removed, and FIG. 22B is a side sectional view with the cover attached.

FIG. 23 is an exploded perspective view showing still another configuration of the above.

24A and 24B show a conventional example, in which FIG. 24A is a plan view with a cover removed, and FIG. 24B is a side sectional view with a cover attached.

FIG. 25 is an exploded perspective view of the same.

[Explanation of symbols]

 Reference Signs List 8 movable contact 8b connecting piece 8c movable contact 8d tongue piece 8e hole 15 support member 20 slit 21 convex part

Claims (15)

[Claims] 1. A fixed contact having a fixed contact at one end, a movable contact having a plurality of movable contacts that come into contact with and separate from the fixed contacts of the plurality of fixed terminals, and the movable contact and the fixed contact come and go. A drive unit that drives the movable contact in the direction, a housing that forms an airtight space in which the fixed terminal, the movable contact and the drive unit are housed, and an insulating member that isolates the inside of the housing into a plurality of spaces, A plurality of contact portions each including a pair of fixed contacts and a movable contact are respectively disposed in the space separated by the insulating member, and the movable contact has a movable contact fixed to a tip portion and a movable contact. And a plurality of leg pieces along the direction in which the fixed contact comes and goes, and a connecting piece that connects each leg piece, and has a insulating member provided on the drive unit and supporting the connecting piece. Sealed contact device provided In the above, at least a part of the connecting piece is inserted, and a slit having a width dimension larger than the thickness of the connecting piece is provided on the front surface of the support member, and any one of a pair of side faces facing the connecting piece inside the slit is provided. A sealing contact device, wherein a projection is formed on one side and a hole into which the projection is fitted is formed in the connecting piece. 2. The inclined portion is formed substantially at the center of the side surface of the slit, and a pair of side surfaces inside the slit are inclined from the vicinity of the convex portion to the both ends of the slit in a direction away from the connecting piece. 2. The method according to claim 1, wherein
The sealed contact device according to claim 1. 3. A protruding portion which is located deeper than the protruding portion is formed on one of the pair of side surfaces inside the slit where the protruding portion is not formed, and the protruding portion is formed. 2. The sealed contact device according to claim 1, wherein an elastic member for urging the connecting piece toward the side surface on which the protrusion is formed is provided between the side surface and the connecting piece. 4. The sealed contact device according to claim 3, wherein a recess is formed on at least a portion of the side surface of the slit where the protrusion is formed, where the elastic member is provided. 5. The sealed contact device according to claim 3, wherein projecting pieces are formed at both ends of the slit of the support member. 6. A movable contact having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and the movable contact coming into and away from the fixed contact. A drive unit that drives the movable contact in the direction, a housing that forms an airtight space in which the fixed terminal, the movable contact and the drive unit are housed, and an insulating member that isolates the inside of the housing into a plurality of spaces, A plurality of contact portions each including a pair of fixed contacts and a movable contact are respectively disposed in the space separated by the insulating member, and the movable contact has a movable contact fixed to a tip portion and a movable contact. And a plurality of leg pieces along the direction in which the fixed contact comes and goes, and a connecting piece that connects each leg piece, and has a insulating member provided on the drive unit and supporting the connecting piece. Sealed contact device provided 3. The sealed contact device according to claim 1, wherein a bending portion that is bent by a force applied in a contact direction between the movable contact and the fixed contact is provided on at least a part of the leg pieces. 7. A movable contact having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and the movable contact coming into contact with and separating from the fixed contact. A drive unit that drives the movable contact in the direction, a housing that forms an airtight space in which the fixed terminal, the movable contact and the drive unit are housed, and an insulating member that isolates the inside of the housing into a plurality of spaces, A plurality of contact portions each including a pair of fixed contacts and a movable contact are respectively disposed in the space separated by the insulating member, and the movable contact has a movable contact fixed to a tip portion and a movable contact. And a plurality of leg pieces along the direction in which the fixed contact comes into contact with and separate from the fixed contact, and a sealing contact comprising supporting means provided on the drive unit for supporting the connecting pieces and connecting the respective leg pieces. In the device, before The support means has a fixing member provided on the drive unit side having an insulating property, and a pair of holding pieces facing each other by a substantially rigid body, and has a substantially U-shaped cross section, and at least a part of the connecting piece. A clamping member, which is located on the movable contact side of the clamping member, is provided with a flexure portion that flexes by a force applied in a contact direction between the movable contact and the fixed contact, and A sealing contact device, wherein a protrusion for preventing the connection piece from coming off is formed at a tip portion. 8. A movable contact having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and the movable contact coming into contact with and separating from the fixed contact. A drive unit that drives the movable contact in the direction, a housing that forms an airtight space in which the fixed terminal, the movable contact and the drive unit are housed, and an insulating member that isolates the inside of the housing into a plurality of spaces, A plurality of contact portions each including a pair of fixed contacts and a movable contact are respectively disposed in the space separated by the insulating member, and the movable contact has a movable contact fixed to a tip portion and a movable contact. And a plurality of leg pieces along the direction in which the fixed contact comes into contact with and separate from the fixed contact, and a sealing contact comprising supporting means provided on the drive unit for supporting the connecting pieces and connecting the respective leg pieces. In the device, before The support means has a fixing member having insulating properties and provided on the drive unit side, and at least a part of the connecting piece between the protruding piece opposed to the protruding piece protruding from the distal end of the fixing member. And a bending portion that is bent by a force applied in a contact direction between the movable contact and the fixed contact is provided on at least a part of the holding member, and the connecting piece is provided at a distal end portion of the bending portion. A sealed contact device, wherein a protrusion for preventing the contact is formed. 9. The sealed contact device according to claim 8, wherein protrusions for preventing the connection piece from coming off are formed at both ends of the fixing member. 10. A movable contact having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and the movable contact being brought into and away from the fixed contact. A drive unit that drives the movable contact in the direction, a housing that forms an airtight space in which the fixed terminal, the movable contact and the drive unit are housed, and an insulating member that isolates the inside of the housing into a plurality of spaces, A plurality of contact portions each including a pair of fixed contacts and a movable contact are respectively disposed in the space separated by the insulating member, and the movable contact has a movable contact fixed to a tip portion and a movable contact. And a plurality of leg pieces along the direction in which the fixed contact comes into contact with and separate from each other, and a sealing contact comprising a connecting piece for connecting each of the leg pieces, the supporting contact being provided in the drive unit and supporting the connecting piece. In the device, A fixing member provided on the driving unit side, the supporting means having a protruding piece having an insulating property and protruding in a direction substantially perpendicular to a direction of contact and separation between the movable contact and the fixed contact, and the connecting piece; And a fixed piece having an insertion hole into which the protruding piece is inserted, the fixing piece protruding from the end of the movable contact and the fixed contact in a direction in which the protruding piece is inserted, and the protruding piece inserted into the insertion hole. The fixed contact piece is rotatably fixed to the protruding piece by crimping a tip end of the sealing contact device. 11. A movable contact having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and the movable contact and the fixed contact coming and going. A drive unit that drives the movable contact in the direction, a housing that forms an airtight space in which the fixed terminal, the movable contact and the drive unit are housed, and an insulating member that isolates the inside of the housing into a plurality of spaces, A plurality of contact portions each including a pair of fixed contacts and a movable contact are respectively disposed in the space separated by the insulating member, and the movable contact has a movable contact fixed to a tip portion and a movable contact. And a plurality of leg pieces along the direction in which the fixed contact comes into contact with and separate from each other, and a sealing contact comprising a connecting piece for connecting each of the leg pieces, the supporting contact being provided in the drive unit and supporting the connecting piece. In the device, A fixing member provided on the driving unit side, the supporting means having a protruding piece having an insulating property and protruding in a direction substantially perpendicular to a direction of contact and separation between the movable contact and the fixed contact, and the connecting piece; And a fixed piece having an insertion hole into which the protruding piece is inserted, the fixing piece protruding from the end of the movable contact and the fixed contact in a direction in which the protruding piece is inserted, and the protruding piece inserted into the insertion hole. The fixed contact piece is rotatably locked and fixed to the protruding piece by bending a tip portion of the sealing contact device. 12. A fixed terminal having a fixed contact at one end, a plurality of movable contacts having a movable contact that comes into contact with and separated from the fixed contacts of the plurality of fixed terminals, and the movable contact and the fixed contact come and go. A driving unit that drives each movable contact in the direction of
A housing forming an airtight space accommodating the fixed terminal, the movable contact and the driving unit; an insulating member for isolating the inside of the housing into a plurality of spaces; and an insulating member provided in the driving unit, A plurality of support members for supporting the movable contact, a conductive member having elasticity and connecting between the movable contacts are provided, and a plurality of contact portions including a pair of fixed contacts and a movable contact are each formed of the insulating member. A sealed contact device, which is disposed in the isolated space. 13. A movable contact having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and the movable contact coming into contact with and separating from the fixed contact. A drive unit that drives the movable contact in the direction, a housing that forms an airtight space in which the fixed terminal, the movable contact and the drive unit are housed, and an insulating member that isolates the inside of the housing into a plurality of spaces, In a sealed contact device in which a plurality of contact portions each including a pair of fixed contacts and a movable contact are respectively disposed in the space separated by the insulating member, the movable contact has insulation. A holding member, and a spring body fixed at one end to the driving portion of the driving portion and elastically holding the holding member between the other end and the driving portion, facing the driving portion of the holding member. At least one side A sealed contact device, wherein a rib having a curved shape is protruded. 14. The sealing device according to claim 13, wherein a pressing piece for pressing the holding member toward the driving portion is provided near one end fixed to the driving portion of the spring body. Contact device. 15. A screw hole is provided in a portion of the holding member where a distance between the movable contact and the driving portion is reduced when the movable contact is driven in a direction in which the movable contact comes into contact with the fixed contact. 15. The sealed contact device according to claim 13, further comprising an adjusting screw screwed into the hole and having a variable amount of protrusion toward the driving portion.