JP2010225330A - Switch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switch device capable of clearly distinguishing between a step for fixing an exposure adjustment and a focusing adjustment and a step of operating a shutter, through a feeling from a push-button when it is pushed by a finger. <P>SOLUTION: When a push-button 40 is pushed down, a suction plate 33 contacts with a metal terminal 13 to change over a first switch SW1 and an exposure adjustment and a focusing adjustment are performed. At the same time, a shift of the push-button 40 is stopped temporarily and a first reaction force from the push-button is given as a feeling. When a larger pushing force is given, a second reaction force becomes larger, but a magnet 32 and the suction plate 33 are separated and the second reaction force is released to make the push-button 40 light instantaneously. At the same time, a second switch SW2 is changed over to operate a shutter. Since the difference between the first reaction and the second reaction is large, the step of fixing such as exposure adjustment and the step of shutter operation can be distinguished clearly through the feeling from push-button. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a switch device capable of two-stage input operation according to a pressing force, and more particularly to a switch device used for a shutter of a digital camera.

  In a digital camera mounted on a mobile phone or the like, exposure adjustment and focus adjustment are performed at the time of shooting. In the current camera, the exposure adjustment and focus adjustment are fixed at the first stage when the shutter switch button is lightly pressed with the first pressing force, and then the shutter is operated by pressing firmly with the second pressing force. Do (cut).

  As such a shutter switch mechanism, for example, the following Patent Document 1 exists.

  In the switch mechanism described in Patent Document 1, a sheet metal push switch having a central portion protruding in a semicircular cross section on an FPC, an annular portion surrounding the periphery, a connecting portion connected to the annular portion, and the like is mounted. Configured. When the shutter button is pressed, the push switch is deformed. At this time, when the center portion of the push switch is pressed, the lower side of the connecting portion comes into contact with the FPC, and when the second portion is deformed by continuing to press, the center portion. The lower surface side of is in contact with the FPC. A predetermined switch operation is performed at each of the first displacement and the second displacement due to a difference in pressing force to the shutter button. In a camera using this switch mechanism, exposure adjustment and focus adjustment are performed at the time of the first displacement, and the shutter operates at the time of the second displacement.

JP 2003-257272 A

  However, in the switch mechanism described in Patent Document 1, since the first displacement time and the second displacement time are set according to the degree of subtle deformation of the push switch itself, a fixed stage of exposure adjustment and focus adjustment. And the stage at which the shutter operates are hard to distinguish clearly. For this reason, when the photographer gradually presses the shutter button with his / her finger, exposure adjustment and focus adjustment are fixed, and it is difficult to judge from the touch from the shutter button that the shutter has operated immediately after that. there were.

  For this reason, even if the shutter button is lightly pressed, it does not depend on the photographer's intuition as to how much the exposure adjustment and focus adjustment are fixed and how much the shutter is operated when the shutter button is pressed. I was in a situation that I could not get.

  In this regard, it is also possible to electrically detect the switching between the switch operation at the time of the first displacement and the switch operation at the time of the second displacement, and notify the photographer by emitting light or sound at the moment of switching. Although it can be considered, a dedicated member is required, and an increase in the number of parts and an increase in cost are inevitable.

  The present invention is to solve the above-described conventional problems, and when the shutter button is pressed with a finger, the exposure adjustment and focus adjustment fixing stage and the shutter operating stage are clearly clarified through touch from the shutter button. An object of the present invention is to provide a switch device for a digital camera that can be distinguished.

The present invention provides a push button that is movably provided along a pressing direction and a reverse pressing direction that is opposite to the pressing direction, and the pressing direction and the counter pressing direction together with the push button or separately from the push button. An adsorbing member movably provided along the adsorbing member, an urging member for urging the push button in the counter-pressing direction via the adsorbing member, and an abutting member within a moving range of the adsorbing member. A switch device having a support part,
The adsorption member has an adsorption plate provided on one side and a magnet provided on the other side and magnetically adsorbed to the adsorption plate,
In an initial position where no operating force is applied to the push button, the magnetic member is attracted to the attracting plate and the magnetic member is separated from the support portion in the counter-pressing direction by the biasing force of the biasing member,
A first switch that switches in response to the push button being pushed from the initial position to a position where the suction member abuts on the support portion and the movement of the push button is stopped; and
When the push button is further pressed from the position where the movement of the attraction member is stopped, the magnet and the attraction plate are separated,
And a second switch that is switched when the push button is pushed more than a second displacement amount from the initial position to a position where at least the magnet and the attraction plate are separated from each other. To do.

  In this case, a first reaction force is obtained from the push button when the movement of the attraction member stops, and a first reaction force larger than the first reaction force is obtained when the magnet and the attraction plate are separated. Those capable of obtaining a reaction force of 2 are preferred.

  In the present invention, the first and second reaction forces are interlocked with two types of reaction forces (first reaction force and second reaction force) having extremely different magnitudes according to the difference in operating force applied to the push button. Since the switch is switched, it is possible to clearly distinguish between the fixed stage of exposure adjustment and focus adjustment and the stage of shutter operation.

  Further, after the stroke position of the push button when the second switch is switched has passed the position where the magnet and the suction plate are separated, the urging force of the urging member starts to act again on the push button. It is preferable that the value is set in the interval.

  In the above means, since the shutter can be operated immediately after a feeling that the push button is suddenly lightened from a state where the operation force is increased, the shutter operates at the moment when the photographer feels that the push button becomes light. Can be perceived.

  For example, the first switch is formed by a contact electrode formed by the suction plate and a metal terminal provided on the support portion, or the first switch is provided on either the suction plate or the support portion. Formed by the membrane switch.

For example, the second switch is formed of a membrane switch.
Alternatively, a yoke is provided around the magnet, and a magnetic path is formed by the magnet, the suction plate and the yoke,
The second switch is formed of a magnetic sensor.

  In the switch device of the present invention, when the push button is pressed, it is possible to clearly distinguish between the exposure adjustment / focus adjustment fixing stage and the shutter operating stage through the feeling returned from the push button.

It is the perspective view which showed the switch apparatus which is embodiment of this invention. It is a disassembled perspective view of a switch apparatus. It is sectional drawing of a switch apparatus. It is a side view of the switch apparatus which shows the initial state before pressing. It is a side view of the switch apparatus which shows a half release state. It is a side view of the switch apparatus which shows the state just before shutter drive. It is a side view of the switch apparatus which shows a shutter drive state. It is a graph which shows the relationship between the stroke and reaction force of the switch apparatus of FIG.

  1 is a perspective view showing a switch device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the switch device, FIG. 3 is a cross-sectional view of the switch device, and FIGS. 4A to 4D are steps of the operation of the switch device. 4A is a side view of the switch device showing an initial state before pressing, FIG. 4B is a side view of the switch device showing a half-release state, and FIG. 4C is a side view of the switch device showing a state immediately before driving the shutter. FIG. 4D is a side view of the switch device showing the shutter driving state.

  In each drawing, the X direction indicates the left-right direction or the longitudinal direction, the Y direction indicates the width direction or the front-rear direction, and the Z direction indicates the plate thickness direction or the height direction.

  The switch device 1 shown in FIG. 1 is mounted on a device such as a camera shutter that requires a two-step switch operation according to the amount of pressing.

As shown in FIGS. 1 to 3, the switch device 1 is composed of a plurality of members.
It has the base 10 which comprises a base on the lower side. The base 10 is formed as a molded body made of an insulating rigid synthetic resin. A support surface 10A made of a flat surface is formed at the center of the upper surface side of the base 10, and a through hole 11 is formed at the center of the support surface 10A. The base 10 has a shape that is bilaterally symmetric on both sides in the longitudinal direction with the through hole 11 in between. Support portions 12 and 12 are formed on both sides of the base 10, and metal terminals 13 and 13 constituting one contact electrode of the first switch SW 1 are provided on the surfaces of the support portions 12 and 12. Yes.

  Further, guide pillars 14 and 14 extending in the upper direction are formed in the center of the support parts 12 and 12, and latching parts 15 and 15 each having a substantially T-shape in plan view are formed on the uppermost parts of the guide pillars 14 and 14, respectively. It is integrally formed. The surfaces of the metal terminals 13 and 13 on the support portions 12 and 12 and the lower surfaces of the latching portions 15 and 15 are separated from each other with a predetermined distance in the height direction. Further, fitting protrusions 16 and 16 are integrally formed at positions further outside the support portions 12 and 12 on the base 10. Concave portions 17, 17, 17, 17 are formed at positions on both sides in the front-rear direction of the support portions 12, 12.

  An urging member 20 is provided above the base 10. The urging member 20 is integrally formed of a material such as a flexible or elastic synthetic resin, such as a polyacetal resin. Fixed portions 21 and 21 are formed on both sides of the urging member 20 in the longitudinal direction, and a movable portion 22 is provided at the center thereof. Fitting recesses 21 a and 21 a are formed at both ends of the fixing portions 21 and 21 in the longitudinal direction. The fixed parts 21 and 21 at both ends and the movable part 22 at the center are connected via four elastic arms 23, 23, 23, 23 formed in a band shape. A base portion 24 is formed so as to protrude from the upper surface of the movable portion 22, and a shaft portion 25 having a shape narrower than the base portion 24 and extending upward is integrally formed on the upper surface of the base portion 24. A step 24 b is formed at the boundary between the base 24 and the shaft 25. As shown in FIG. 3, a guide recess 24 a that communicates in the height direction from the lower surface of the movable portion 22 is formed inside the base portion 24.

  The fixed parts 21 and 21, the movable part 22, the base part 24 and the shaft part 25 are formed with relatively thick dimensions and are in a state in which they themselves are not easily deformed. On the other hand, the elastic arm 23 is formed with a dimension thinner than the fixed parts 21, 21, the movable part 22, the base part 24, the shaft part 25, and the like, and the elastic arm 23 itself is easily deformed. The total length of the biasing member 20 in the longitudinal direction (X direction), that is, the total length between the fixing portion 21 on one end side and the fixing portion 21 on the other end side is the length in the longitudinal direction of the base 10. It is formed with a dimension longer than the entire length.

  An adsorption member 30 is provided above the urging member 20. The adsorption member 30 includes a yoke 31, a magnet 32, and an adsorption plate 33.

  The yoke 31 and the suction plate 33 are formed of a metal plate material such as an iron plate on which a magnet 32 can be magnetically attracted. The yoke 31 has a bottom 31a made of a square or a rectangle, and a through hole 31b is formed at the center thereof. Four wall portions 31c, 31c, 31c, 31c bent substantially vertically are formed on four sides of the bottom portion 31a. A through hole 33a is formed at the center of the suction plate 33, and recesses 33b and 33b are formed at both ends in the longitudinal direction. The width dimensions of the recesses 33 b and 33 b are formed wider than the width dimension of the guide columns 14 and 14 of the base 10. For this reason, it is possible to insert the guide pillars 14 and 14 into the recesses 33b and 33b as will be described later. The suction plate 33 in which the guide columns 14 and 14 are inserted into the recesses 33b and 33b can move in the height direction along the guide columns 14 and 14. The suction plate 33 constitutes the other contact electrode of the first switch SW1.

  The magnet 32 has a square shape or a rectangular shape, and a through hole 32a is formed at the center thereof. For example, one surface of the magnet 32 in the plate thickness direction is magnetized to the N pole, and the other surface is magnetized to the S pole. A bottom 31 a in the yoke 31 is fixed to the lower surface of the magnet 32, and an attracting plate 33 is fixed to the upper surface of the magnet 32 via a magnetic attractive force.

  The push button 40 has a pressing surface 41 on the upper surface side and a bearing portion 42 protruding downward in the figure on the lower surface side. A mounting hole 43 is formed at the center of the bearing portion 42.

Next, assembly of the switch device 1 will be described.
First, the guide pin 50 is inserted into the through hole 11 of the base 10 from the bottom side. Next, the second switch SW2 is disposed around the through hole 11 of the support surface 10A. The second switch SW2 is formed, for example, by a membrane switch or the like in which a lower sheet having contact electrodes formed on the upper surface and a lower sheet having contact electrodes formed on the lower surface are opposed to each other via a thin spacer. When the membrane switch is pressed, the operation state of the switch is switched by the contact electrode on the lower sheet side contacting the contact electrode on the upper sheet side. Note that FIG. 2 shows a case where the two switches SW2 are arranged individually at positions symmetrical with respect to the through hole 11 on the support surface 10A to form the second switch SW2. For example, a membrane switch formed in an annular shape may be disposed around the through-hole 11.

  Next, the urging member 20 is mounted on the base 10. The urging member 20 is a distance between one fixing part 21 and the other fixing part 21 so that the fitting concave parts 21a and 21a are fitted to the fitting convex parts 16 and 16 on the base 10 side. The full length is reduced and the base 10 is mounted in a state of being adjusted to the full length in the longitudinal direction. As a result, as shown in FIG. 4A, the elastic arms 23, 23, 23, 23 of the urging member 20 fixed to the base 10 are bent. This bending generates a biasing force that lifts the movable portion 22 upward in the figure.

  At this time, the tip of the guide pin 50 is inserted into the guide recess 24a from the lower surface of the movable portion 22 (see FIG. 3). The movable portion 22 moves in the height direction substantially vertically by being guided by the guide pins 50. Further, the support portion 12, the metal terminal 13, the guide post 14, the latching portion 15, and the like are inserted into empty spaces 26 and 26 formed in a portion surrounded by the fixed portion 21, the elastic arms 23 and 23, and the movable portion 22. .

  Next, the suction member 30 is installed on the movable portion 22 of the biasing member 20, and finally the shaft portion 25 is inserted into the mounting hole 43, and the push button 40 is positioned at the upper side of the suction member 30. It is fixed to the tip of 25.

  At this time, the attracting member 30 magnetically attracts the yoke 31 on one surface of the magnet 32 and the attracting plate 33 on the other surface with the magnet 32 interposed between the yoke 31 and the attracting plate 33. The yoke 31 is installed on the upper surface of the movable portion 22 with the lower surface of the yoke 31 facing downward.

  As shown in FIG. 3, at this time, the base 24 is inserted into the through hole 31 b of the yoke 31 and the through hole 32 a of the magnet 32, and the lower surface of the bottom 31 a of the yoke 31 is installed on the upper surface of the movable unit 22. Further, the shaft portion 25 is inserted into the through hole 33a of the suction member 30, and the bearing portion 42 of the push button 40 is inserted between the outer surface 25a of the shaft portion 25 and the inner edge of the through hole 33a.

  As shown in FIG. 3, the upper surface of the step 24b of the base 24, the surface of the magnet 32, and the upper ends of the walls 31c, 31c, 31c, 31c are set on the same plane. The lower end 42 a of the bearing portion 42 is in contact with both the upper surface of the step 24 b of the base portion 24 and the surface of the magnet 32.

  When the magnet 32 is magnetically attracted to the suction plate 33, the upper ends of the wall portions 31 c, 31 c, 31 c, 31 c are in contact with the lower surface of the suction plate 33. Between the yoke 31, the magnet 32, and the suction plate 33, the path of the upper surface of the magnet 32 → the suction plate 33 → the walls 31 c, 31 c, 31 c and 31 c of the yoke 31 → the bottom 31 a of the yoke 31 → the lower surface of the magnet 32. The magnetic path (magnetic circuit) which consists of is formed, the magnetic flux from the magnet 32 is made difficult to leak outside, and the magnetic attraction | suction of the attraction | suction board 33 is stabilized.

  A gap δ is formed between the inner edge of the through hole 33 a and the outer surface of the bearing portion 42 of the push button 40, and the push button 40 can directly push the magnet 32 and the base portion 24.

  Hereinafter, the operation of the switch device will be described mainly with reference to FIGS. 4A, 4B, 4C, 4D, and 5. FIG.

  FIG. 5 is a graph showing the relationship between the stroke and reaction force of the switch device of the present invention. 5 shows a range (between P0 and P1 and between P3 and P4) in which the urging force of the urging member 20 is dominantly acting, and the first steep right shoulder (the side where the stroke is small). The upward inclined portion (between P1 and P2) is a range where the urging force due to the deformation of the attracting plate 33 acts dominantly, and the following downward sloping inclined portion (between P2 and P3) has a sharp magnetic attraction force. The changing range is shown. The steep slope at the end (the side with the larger stroke) indicates the movement limit region (after P4) of the switch device. Points P0, P1, P2, and P3 indicate the position of the stroke of the push button, P0 indicates an initial point (initial state) before pressing, and P4 indicates a position where the push button has moved most. .

(initial state)
In the initial state shown in FIG. 4A, the movable portion 22 is lifted upward in the figure by the urging force of the urging member 20, and the pressing surface 41 of the push button 40 is at the initial point P0. Therefore, the attracting member 30 is moved upward in an integrated state in which the magnet 32 is magnetically attracted to the attracting plate 33. The upper surface of both ends of the suction plate 33 is pressed upward against the lower surfaces of the latch portions 15 and 15 by the biasing force of the biasing member 20, and the upward movement beyond this is restricted. Stopped in a state. Therefore, the first switch SW1 is in a non-contact state (off state) in which the contact electrodes of the suction plate 33 and the metal terminals 13 and 13 are separated from each other.

(Half release state)
FIG. 4B shows a half release state. The half-release state means a state where exposure adjustment and focus adjustment are fixed before the shutter is released.

  As shown in FIG. 4B, when the photographer lightly presses the pressing surface 41 of the push button 40 with the fingertip, the operating force is transmitted to the suction member 30 via the push button 40, and the suction member 30 and the biasing member 20. Can be pushed down. At this time, since the elastic arms 23 and 23 of the urging member 20 are deformed in the recesses 17 and 17 of the base 10, the adsorption member 30 is pushed down against the urging force of the urging member 20.

  As shown in FIG. 5, when the operation force on the push button 40 is increased (the stroke is increased), the reaction force from the push button 40 is also increased in proportion to this. In this switch device 1, until the stroke of the push button 40 reaches the first displacement amount h 1, that is, until the position where the lower surface of the suction plate 33 contacts the metal terminals 13, 13 (point P 1) is energized. The biasing force of the member 20 acts as a reaction force. The urging force of the urging member 20 is proportional to the product of the spring constant and displacement of the elastic arm 23 (Hooke's law).

  Then, when the stroke of the pushbutton 40 reaches the point P1 by being pushed down by the first displacement amount h1, the lower surfaces of both ends of the suction plate 33 come into contact with the metal terminals 13, 13, so that the suction member 30 is moved downward. The movement is stopped. That is, the movement of the push button 40 in the pressing direction can be temporarily stopped. At the same time, an impact at the time of contact is given to the photographer's finger through the push button 40.

  The point P1 where the push-down of the push button 40 temporarily stops is the half-release position, and the camera exposure adjustment and focus adjustment are fixed. That is, at the point P1 where the push-down of the push button 40 is temporarily stopped, the contact electrodes of the suction plate 33 and the metal terminals 13 and 13 are in contact with each other, so that the first switch SW1 is turned on. By obtaining an ON signal from the first switch SW1 inside the camera, adjustment members (not shown) such as a diaphragm and a lens are fixed, and settings for exposure adjustment and focus adjustment are held.

  As shown in FIG. 5, when the reaction force from the push button 40 to the finger at the temporarily stopped point P1 (half-release state) is a first reaction force f1, the photographer next pushes the push button 40 from the point P1. In order to push down further, an operation force larger than the first reaction force f1 which has been acting so far is required.

  For this reason, the photographer receives an impact that occurs when the stroke of the push button 40 has reached point P1, that is, when the camera has entered a half-release state in which exposure adjustment or focus adjustment is performed, The first reaction force f1 from the push button 40 can be clearly perceived from the touch through the external stimulus action.

  The magnet 32 is magnetically attracted to the lower surface of the attracting plate 33. For this reason, the magnetic attraction between the magnet 32 and the suction plate 33 is released unless the operating force for pressing the push button 40 exceeds the magnetic attraction force acting between the magnet 32 and the suction plate 33. There is no. That is, the magnet 32 is not detached from the suction plate 33 only by the suction plate 33 contacting the upper surface of the metal terminals 13, 13, and the push button 40 is lowered as long as the magnet 32 magnetically attracts the suction plate 33. There is nothing.

(Shutter drive state)
As shown in FIG. 4C, when the push button 40 is strongly pressed down from the half-release state of FIG. 4B, the operating force acts on the magnet 32 via the lower end 42a of the bearing portion 42. The yoke 31 is magnetically attracted to the suction plate 33 via the magnet 32, and when the push button 40 is pushed down, the magnet 32, the yoke 31, and the movable portion 22 of the biasing member 20 are pushed down, and the suction plate 33. The center portion is bent downward and deformed while maintaining the state where both ends are placed on the metal terminals 13 and 13.

  5 shows this operation state, and the suction plate 33 is deformed and generates a reaction force according to the stroke of the push button 40, but the suction plate 33 is a metal material and has a large cross-sectional area. Therefore, it shows a steep rising characteristic.

  As shown in FIGS. 4C and 5, as the operation force, a force exceeding the magnetic attraction force acting between the magnet 32 and the attraction plate 33 is applied to the push button 40, and the stroke of the push button 40 is changed to the initial point P <b> 0. , The magnet 32 is separated from the attracting plate 33 when the point P2 moved by the second displacement amount h2 is reached. In FIG. 4C, the stroke position of the push button 40 immediately before the magnet 32 is separated from the attracting plate 33 is indicated by a point P2. The reaction force at the point P2, that is, the reaction force when the magnet 32 separates from the attracting plate 33 (peak value between P1 and P3 in FIG. 5) is the second reaction force f2.

  As shown in FIG. 4D, when the magnet 32 is separated from the attracting plate 33, the movable portion 22 of the urging member 20 is pushed down together with the yoke 31 and the magnet 32 while resisting the urging force of the urging member 20. In the middle of this movement, the lower surface of the movable portion 22 presses the second switch SW2, so that the operating state of the second switch SW2 is switched. The signal output of the second switch SW2 is sent to a shutter device (not shown) of the camera, the shutter is driven (the shutter is released), and a series of photographing is completed.

  When the magnet 32 and the attracting plate 33 are separated, the second reaction force f2 is suddenly released, and the magnetic attracting force is rapidly reduced. For this reason, as shown between P2 and P3 in FIG. At this time, the photographer gets a feeling that the push button 40 is suddenly lightened immediately after the operation force to the push button 40 is increased.

  When the push button 40 is further depressed, the reaction force from the push button 40 is again controlled by the urging force of the urging member 20 as shown between P3 and P4 in FIG. Point P3 indicates the stroke position of the push button where the magnetic attraction force between the magnet 32 and the attraction plate 33 almost disappears, and the urging force of the urging member 20 starts to be dominant again.

  The stroke position of the push button 40 at which the operation state of the second switch SW2 is switched may be any as long as it is within the range from the point P2 to the point P4, but preferably between the point P2 and the point P3, that is, the magnet 32. After the point P2 separating from the suction plate 33, the magnetic suction force between the magnet 32 and the suction plate 33 almost disappears, and the biasing force of the biasing member 20 becomes dominant again with respect to the push button 40. It is preferable to set up to the point P3 at which the operation starts.

  With such a setting, the shutter can be operated immediately after a feeling that the push button 40 is suddenly lightened from a state where the operating force is increased, and when the photographer feels that the push button 40 becomes light It is possible to perceive that the shutter has operated.

(Shutter fully open)
When the push button 40 is kept depressed even after the shutter is operated, the push button 40 is pushed down to a position where the deformation of the second switch SW2 can be continued. Then, when the deformation of the second switch SW2 reaches the limit, and when it is further pushed down, a strong reaction force as shown after the point P4 in FIG. As a result, the photographer can feel that the shutter has been pushed all the way down.

  As described above, in the present invention, the first reaction force f1 generated when the depression is temporarily stopped in the middle of the operation on the push button 40 is clarified from the touch via the push button 40 and the photographer's fingertip. Obtainable. For this reason, the photographer can reliably perceive that the state of the camera has reached the half-release state, that is, the exposure adjustment and the focus adjustment are fixed.

  Further, when the push button 40 is pushed in with a strong force from that position, the second reaction force from the push button 40 is suddenly released to lighten the state. It is possible to clearly perceive that it has operated (cut).

  Therefore, when the push button 40 is pressed, it is possible to clearly distinguish the half-release state and the shutter drive state among the operation states of the camera.

  In the above embodiment, the first switch SW1 is shown as being configured by the suction plate 33 on the suction member 30 side and the metal terminals 13 and 13 on the base 10 side, but the present invention is not limited to this. The membrane switch may be arranged on the upper surface of the support portion 12 or the lower surface of the adsorption member 30.

  In addition, the second switch SW2 has been described with reference to a case where the second switch SW2 is configured by a membrane switch. However, the present invention is not limited to this. For example, a magnetic change that occurs when the magnet 32 and the attracting plate 33 are separated from each other. The configuration may be such that detection is performed using a magnetic sensor composed of a magnetoresistive element or a Hall element. In this case, when the magnet 32 and the attracting plate 33 are separated, the upper end portions of the wall portions 31c, 31c, 31c, 31c of the yoke 31 are also separated from the attracting plate 33, so that the magnetic flux in the magnetic path leaks to the outside. By detecting the magnetic change at this time by the magnetic sensor, it is possible to detect that the magnet 32 and the attracting plate 33 are separated, and to operate the shutter in response to a signal output from the magnetic sensor.

  Furthermore, the elastic arm 23 formed of synthetic resin has been described as the urging member 20 that generates the urging force. However, the present invention is not limited to this, and for example, a metal leaf spring, a coil spring, It can also be composed of an elastic elastomer or the like.

DESCRIPTION OF SYMBOLS 1 Switch apparatus 10 Base 12 Support part 13 Metal terminal (1st switch)
20 biasing member 21 fixed portion 22 movable portion 23 elastic arm 24 base 25 shaft portion 30 attracting member 31 yoke 32 magnet 33 attracting plate (first switch)
40 push button SW1 first switch SW2 second switch

Claims (7)

A push button provided movably along a pressing direction and a reverse pressing direction opposite to the pressing direction, and movable along the pressing direction and the counter pressing direction together with the push button or separately from the push button. An adsorbing member provided on the adsorbing member, an urging member for urging the push button in the counter-pressing direction via the adsorbing member, and a support portion provided so as to be able to abut within a moving range of the adsorbing member. A switch device comprising:
The adsorption member has an adsorption plate provided on one side and a magnet provided on the other side and magnetically adsorbed to the adsorption plate,
In an initial position where no operating force is applied to the push button, the magnetic member is attracted to the attracting plate and the magnetic member is separated from the support portion in the counter-pressing direction by the biasing force of the biasing member,
A first switch that switches in response to the push button being pushed from the initial position to a position where the suction member abuts on the support portion and the movement of the push button is stopped; and
When the push button is further pressed from the position where the movement of the attraction member is stopped, the magnet and the attraction plate are separated,
And a second switch that is switched when the push button is pushed more than a second displacement amount from the initial position to a position where at least the magnet and the attraction plate are separated from each other. Switch device to do.   A first reaction force is obtained from the push button when the movement of the attraction member stops, and a second reaction force larger than the first reaction force when the magnet and the attraction plate are separated. The switch device according to claim 1, wherein:   After the stroke position of the push button when the second switch is switched has passed the position where the magnet and the suction plate are separated, the urging force of the urging member starts to predominate again on the push button. 3. The switch device according to claim 1, wherein the switch device is set up to a position.   4. The switch device according to claim 1, wherein the first switch is formed by a contact electrode formed by the suction plate and a metal terminal provided on the support portion. 5.   4. The switch device according to claim 1, wherein the first switch is formed of a membrane switch provided on either the suction plate or the support portion. 5.   The switch device according to claim 1, wherein the second switch is formed of a membrane switch. A yoke is provided around the magnet, and a magnetic path is formed by the magnet, the suction plate and the yoke,
The switch device according to claim 1, wherein the second switch is formed of a magnetic sensor.

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