JP2016115414A - Electric connector - Google Patents

Abstract

An object of the present invention is to disperse a pressing force applied to a housing from a contact to prevent the housing from bulging to the outside, to improve the appearance of the appearance and to stably hold the contact. An electrical connector includes a housing and a contact. The bifurcated connecting portion 21 includes a contact portion 24 that makes contact with the inner wall of the communication groove 13 on the surface, and a concave portion 25 that is formed so as not to contact the inner wall of the communication groove 13. The bifurcated connecting portion 21 is engaged with the housing 10 by being expanded by the pressing force from the conductor of the cable. [Selection] Figure 1

Description

  The present invention relates to an electrical connector for connecting a conductor with a cable covered with an insulator.

  2. Description of the Related Art Conventionally, an electrical connector is known that electrically connects a core wire that is a conductor with a cable that is covered with an insulator. As such an electrical connector, there is known an electrical connector having a conductive contact having a bifurcated pressure contact plate portion and breaking through an insulator between the two forks of the bifurcated pressure contact plate portion (for example, a patent) Reference 1). Thereby, the trouble of peeling off the insulator and exposing the core wire can be saved, and the cable can be easily connected to the electrical connector.

  FIG. 10 is a cross-sectional view of a conventional electrical connector 100. In FIG. 10, the description of the cable is omitted.

  The electrical connector 100 pierces an insulator between two forked contacts 120 to connect the contact 120 and a cable core wire (not shown). First, the cable is inserted into the housing 110, and then the contact 120 is placed in the housing. 110 is attached to connect the contact 120 and the core of the cable. As shown in FIG. 10, the contact 120 has a protruding portion 121 that protrudes outward, and is held in the housing 110 by being pressed and locked to the inner wall of the contact insertion groove 111. Has been.

JP 2005-158730 A

  However, in an electrical connector for connecting a conventional core wire to a cable covered with an insulator, a pressing force is concentrated on the local portion of the housing that is pressed by the protruding portion of the contact, and the pressed portion of the housing swells to the outside. This causes a problem that the appearance looks worse. In particular, in recent years, there is a tendency that the thickness of the housing tends to be thin due to the demand for miniaturization and thinning of the electrical connector, and thus there is a problem that the housing swells outside with a relatively small pressing force. Moreover, since the protrusion part of a contact and a housing contact by a point and hold | maintain a contact in a housing, it has the subject that a contact cannot be hold | maintained stably in a housing.

  The object of the present invention is to increase the contact area between the contact and the housing when holding the contact in the housing, thereby preventing the pressing force against the housing from the contacts from being dispersed and preventing the housing from bulging outside. Another object of the present invention is to provide an electrical connector that can improve the appearance of the appearance and can stably hold a contact.

An electrical connector according to the present invention is an electrical connector for connecting to a cable in which a conductor is covered with an insulator, the insertion hole into which the cable can be inserted, and a distance from the insertion hole at a side of the insertion hole. An insulating housing provided with a contact holding portion that is provided and opened to the outside, and a communication groove that communicates the contact holding portion and the insertion hole, and has a bifurcated shape, and the communication groove A bifurcated connecting portion for breaking through the insulator of the cable inserted into the insertion hole and connecting it to the conductor; and a counterpart to be connected to the mating connector held by the contact holding portion And a conductive contact formed by bending a plate-like member, and the bifurcated connection portion abuts on the surface of the inner wall of the communication groove. A contact portion and a locking portion formed to be recessed so as not to contact the inner wall of the communication groove, and the locking portion is configured such that the bifurcated connection portion is a pressing force from the conductor of the cable. It is locked to the housing by expanding at.

  The contact portion of the bifurcated connecting portion is brought into contact with the inner wall of the communication groove by the surface to hold the contact in the communication groove of the housing, and the pressing force from the contact to the housing is dispersed by the contact portion. In a state where the conductor of the cable is connected to the bifurcated connecting portion, the bifurcated connecting portion is pressed from the conductor and expands, whereby the engaging portion is engaged with the housing and prevents the contact from coming off.

  According to the present invention, by increasing the contact area between the contact and the housing when holding the contact in the housing, it is possible to prevent the pressing force against the housing from the contacts from being dispersed and the housing from being swollen to the outside. In addition, the appearance can be improved, and the contact can be stably held.

1 is an exploded perspective view of an electrical connector according to a first embodiment of the present invention. 1 is a perspective view of an electrical connector according to a first embodiment of the present invention. It is sectional drawing which cut | disconnected the electrical connector which concerns on the 1st Embodiment of this invention in parallel with xy plane, and was seen from upper direction. It is sectional drawing which cut | disconnected the electrical connector which concerns on the 1st Embodiment of this invention in parallel with xz plane, and was seen from diagonally forward. It is a perspective view of the contact in the 1st Embodiment of this invention. It is a front view of the contact in the 1st Embodiment of this invention. It is the front view which expanded the location which latches the contact in the 1st Embodiment of this invention to a housing. It is sectional drawing of the electrical connector which concerns on the 2nd Embodiment of this invention. It is the front view which expanded the location which latches the contact in the 2nd Embodiment of this invention to a housing. It is sectional drawing of the conventional electrical connector.

  Hereinafter, electrical connectors according to embodiments of the present invention will be described in detail with reference to the drawings as appropriate. In the figure, the x-axis, y-axis, and z-axis form a three-axis orthogonal coordinate system. The positive direction of the y-axis is the forward direction, the negative direction of the y-axis is the backward direction, the x-axis direction is the left-right direction, and the z-axis is A description will be given assuming that the positive direction is upward and the negative direction of the z-axis is downward.

(First embodiment)
<Configuration of electrical connector>
The configuration of the electrical connector 1 according to the first embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 7.

The electrical connector 1 includes a housing 10 and a contact 20. The electrical connector 1 is connected to a cable 130 in which a conductor 130b is covered with an insulator 130a. The electrical connector 1 is connected to both ends of the cable 130, and is connected to the mating connectors (not shown) mounted on the board to connect the mating connectors mounted on the board. The housing 10 is made of an insulating material. It is formed by. The housing 10 has a pair of insertion holes 11 that open to the front and extend rearward from the front end so that the cable 130 can be inserted from the front. The housing 10 is spaced apart from the insertion holes 11 on the left and right sides of the insertion hole 11. A contact holding portion 12 (see FIG. 1) that is open to the outside, and a communication groove 13 that connects the insertion hole 11 and the contact holding portion 12 are provided. The communication groove 13 is formed along the direction (left-right direction) orthogonal to the insertion direction (rear direction) of the cable 130 with respect to the insertion hole 11 (refer FIG. 3). The housing 10 includes a contact wall portion 14 at the rear end that closes the rear end of the insertion hole 11 and contacts the front end of the cable 130 in the insertion direction. The housing 10 is connected to the abutting wall portion 14 and is provided with a column portion 15 along the insertion hole 11 between the pair of insertion holes 11. The housing 10 is formed with an engaging recess 18 that is cut inward from both left and right ends above and below the contact holding portion 12.

  A pair of contacts 20 are provided and are formed of a conductive material. The contact 20 is formed in a U shape when viewed from above and below by bending a plate-like member.

  The contact 20 includes a bifurcated connection portion 21 and a counterpart connector connection portion 22.

  The bifurcated connecting portion 21 is connected to the mating connector connecting portion 22 and has a U-shaped groove 23 formed by bifurcating the distal end side. The bifurcated connection portion 21 is inserted into the communication groove 13 of the housing 10, breaks through the insulator 130 a of the cable 130 inserted into the insertion hole 11, and sandwiches the conductor 130 b between the two forks. When it is connected to the conductor 130b, it is expanded by being pressed outward by the conductor 130b. The bifurcated connecting portion 21 is connected in a state where it is bitten into the conductor 130b. The bifurcated connecting portion 21 includes an abutting portion 24 that abuts on the surface with the upper wall 16 and the lower wall 17 that are inner walls of the communication groove 13 of the housing 10. The bifurcated connecting portion 21 includes a concave portion 25 as a locking portion formed by denting a part of the abutting portion 24 so as not to abut on the upper wall 16 and the lower wall 17 of the communication groove 13. The recess 25 is provided on the distal end side of the bifurcated connection portion 21 with respect to the communication groove 13. The U-shaped groove 23 can be expanded by the bifurcated connecting portion 21 being pressed outward by the conductor 130b.

  The mating connector connecting portion 22 is held in contact with the contact holding portion 12 of the housing 10 and exposed to the outside, and is press-contacted to the conductive contact of the mating connector. The mating connector connecting portion 22 is provided with an engaging protrusion 26 that protrudes upward from the upper surface and protrudes downward from the lower surface to engage with the engaging recess 18.

<Assembly method of electrical connector>
The assembly method of the electrical connector 1 according to the first embodiment of the present invention will be described in detail below.

  First, the cable 130 is inserted from the front into the insertion hole 11 of the housing 10 prepared in advance. At this time, it is not necessary to expose the conductor 130b of the cable 130.

  Next, the cable 130 is inserted into the insertion hole 11 until the distal end in the insertion direction of the cable 130 contacts the contact wall 14.

  Next, the bifurcated connecting portion 21 of the pair of contacts 20 is inserted into the communication groove 13, and the insulator 130 a of the cable 130 is pierced between the bifurcated portions of the bifurcated connecting portion 21.

Next, the forked connection portion 21 is further inserted into the communication groove 13 to connect the forked connection portion 21 and the conductor 130 b of the cable 130. At this time, the bifurcated connection portion 21 is connected to the conductor 130b in a state of being bitten into the conductor 130b.

  Next, by inserting the bifurcated connection portion 21 into the communication groove 13, the tip of the bifurcated connection portion 21 is engaged with the engagement hole 19 (see FIG. 3) of the support column portion 15. Further, the engagement protrusion 26 of the contact 20 engages with the engagement recess 18 of the housing 10.

  In a state where the conductor 130 b of the cable 130 is connected to the bifurcated connection portion 21 of the contact 20, the abutment portion 24 of the bifurcated connection portion 21 covers the entire upper wall 16 and lower wall 17 of the communication groove 13 of the housing 10. Abut. At this time, the contact portion 24 is pressed in the direction in which the forked connection portion 21 is expanded by the conductor 130b of the cable 130 connected between the forked portion of the forked connection portion 21, thereby the upper wall 16 and the lower wall. 17 is pressed. As described above, the abutment portion 24 abuts the upper wall 16 and the lower wall 17 on the surface, so that the pressing force by the abutment portion 24 against the housing 10 is dispersed, so that the housing 10 is prevented from bulging outside. And appearance can be improved. In addition, since the contact portion 24 contacts the upper wall 16 and the lower wall 17 of the communication groove 13 on the surface to hold the contact 20 in the housing 10, the contact 20 can be stably held in the housing 10.

  When the bifurcated connecting portion 21 is pressed by the conductor 130b of the cable 130 in the expanding direction S1 (see FIG. 7), the corner 27 of the recess 25 bites into the upper wall 16 and the lower wall 17 and is locked. Thus, even when a force is applied to the contact 20 in the direction in which the contact 20 is removed from the communication groove 13 (the positive direction of the x axis in FIG. 7), the corner 27 is locked to the upper wall 16 and the lower wall 17. As a result, the contact 20 can be prevented from coming off.

  The electrical connector 1 assembled by the above method is connected to the mating connector mounted on the board from the front, and accordingly, the conductive contact of the mating connector contacts the mating connector connecting portion 22 of the contact 20. It connects to the other party connector connection part 22, sliding toward back from the back in the contacted state. When the electrical connector 1 is connected to the mating connector, the electrical connector 1 is released from the connection with the mating connector by being pulled forward, and accordingly, the conductive contact of the mating connector is connected to the mating connector of the contact 20. The connection with the mating connector connecting portion 22 is released while sliding from the front to the rear while in contact with the connecting portion 22. Along with the above operation, a force is applied to the contact 20 from the outside in the front-rear direction. The engagement protrusion 26 of the contact 20 and the engagement recess 18 of the housing 10 are engaged, and the tip of the bifurcated connection portion 21 is By engaging with the engagement hole 19, the contact 20 can be stably held with respect to the housing 10.

  According to the present embodiment, since the contact portion 24 of the contact 20 is in contact with the upper wall 16 and the lower wall 17, the thickness of the upper wall 16 and the lower wall 17 of the housing 10 can be reduced. Since it does not bulge outside, the thickness of the upper wall 16 and the lower wall 17 of the housing 10 can be reduced to reduce the height and size of the electrical connector 1.

  Further, according to the present embodiment, the contact 20 is not formed with a portion protruding from the contact portion 24, so that waste of material removal when forming the contact 20 from the plate material can be eliminated as compared with the conventional case. .

  Moreover, according to this embodiment, since the width of the contact 20 in the vertical direction can be reduced, the vertical height of the communication groove 13 of the housing 10 can be reduced, and the height of the electrical connector 1 can be reduced. be able to.

(Second Embodiment)
<Configuration of electrical connector>
The configuration of the electrical connector 2 according to the second embodiment of the present invention will be described in detail below with reference to FIGS. 8 and 9.

  8 and 9, the same reference numerals are given to portions having the same configuration as in FIGS. 1 to 7, and the description thereof is omitted.

  The electrical connector 2 includes a housing 50 and a contact 20.

  The housing 50 penetrates in the vertical direction, which is the thickness direction, and opens to the outside a portion in front of the engagement hole 19 in the insertion direction of the bifurcated connection portion 21 with respect to the engagement hole 19 and the communication groove 13. 51 is provided. The through hole 51 is formed over the width L1 in the left-right direction (see FIG. 9). Here, the width L1 is such that the upper end of the locking wall 52 is formed between the corner 27 and the corner 28 of the recess 25 when the tip of the bifurcated connection portion 21 engaged with the engagement hole 19 abuts against the support column 15. It is the width | variety which can contact | abut between. The housing 50 is provided with a locking wall 52 that is formed continuously with the upper wall 16 and the lower wall 17 of the communication groove 13 and is orthogonal to the insertion direction of the bifurcated connection portion 21 with respect to the communication groove 13. The locking wall 52 constitutes a part of the through hole 51 and is provided to face the support column 15. In addition, since the structure except the above in the housing 50 is the same structure as the housing 10, the description is abbreviate | omitted.

<Assembly method of electrical connector>
The method for assembling the electrical connector 2 according to the second embodiment of the present invention will be described in detail below.

  When the bifurcated connecting portion 21 is pressed in the expanding direction S1 (see FIG. 9) by the conductor 130b of the cable 130, the corner 27 connecting the contact portion 24 and the recessed portion 25 falls into the through hole 51. The recess 25 is locked to the locking wall 52. Thus, even when a force is applied to the contact 20 in the direction in which the contact 20 is removed from the communication groove 13 (the positive direction of the x axis in FIG. 9), the recess 25 is locked to the locking wall 52, The contact 20 can be prevented from coming off.

  In addition, since the assembly methods other than said assembly method in the electrical connector 2 are the same as the assembly method of the electrical connector 1, the description is abbreviate | omitted.

  According to the present embodiment, in addition to the effects of the first embodiment, the recess 25 is locked to the locking wall 52 perpendicular to the insertion direction of the bifurcated connecting portion 21 with respect to the communication groove 13. The housing 50 can be securely held.

  In the present embodiment, the through hole 51 is provided. However, a recess that does not penetrate may be provided in the communication groove 13, and a part of the side wall of the recess may be used as the locking wall 52. When the concave portion is provided, the outer surface of the housing 50 can be made uneven, so that the appearance can be improved.

  In the present invention, the type, arrangement, number, and the like of the members are not limited to the above-described embodiments, and the constituent elements thereof are appropriately replaced with those having the same effects and the like, without departing from the spirit of the invention. Of course, it can be changed appropriately.

  Specifically, in the first embodiment and the second embodiment, the concave portion 25 is provided on the distal end side of the bifurcated connection portion 21 with respect to the communication groove 13, but the conductor of the cable 130 in the bifurcated connection portion 21 is provided. As long as it is a portion that is elastically deformed to the outside by the pressing force of 130b, the concave portion 25 may be provided at a position other than the tip and the tip side of the bifurcated connecting portion 21.

  Moreover, in the said 1st Embodiment and 2nd Embodiment, although the contact 20 was formed in the U shape seeing from upper direction, for example, it is arbitrary shapes, such as a Y shape seeing from the top other than U shape. can do.

  Moreover, in the said 1st Embodiment and 2nd Embodiment, although the pair of contacts was provided, the number of contacts can be made arbitrary, such as 1 or 3 or more.

  The electrical connector of the present invention is suitable for connecting to a cable in which a conductor is covered with an insulator.

DESCRIPTION OF SYMBOLS 1 Electrical connector 2 Electrical connector 10 Housing 11 Insertion hole 12 Contact holding part 13 Communication groove 14 Contact wall part 15 Supporting part 16 Upper wall 17 Lower wall 18 Engagement recessed part 19 Engagement hole 20 Contact 21 Bifurcated connection part 22 Opposite side Connector connecting portion 23 U-shaped groove 24 Abutting portion 25 Recessed portion 26 Engaging projection 27 Angle 28 Angle 50 Housing 51 Through hole 52 Locking wall

Claims (3)

An electrical connector for connecting a conductor with a cable covered with an insulator,
An insertion hole into which the cable can be inserted, a contact holding portion that is spaced apart from the insertion hole at a side of the insertion hole and that is open to the outside, and communication that connects the contact holding portion and the insertion hole An insulative housing with a groove;
A bifurcated connecting portion that has a bifurcated shape and is inserted into the communication groove and penetrates the insulator of the cable inserted into the insertion hole between the two branches and is connected to the conductor; and the contact holding A mating connector connecting part that is held by the part and connected to the mating connector, and a conductive contact formed by bending a plate-shaped member;
Have
The bifurcated connection is
A contact portion that contacts the inner wall of the communication groove on the surface, and a locking portion that is formed to be recessed so as not to contact the inner wall of the communication groove,
The locking portion is
The bifurcated connecting portion is locked to the housing by expanding with a pressing force from the conductor of the cable,
An electrical connector characterized by that. The locking portion is
Locking to the inner wall of the communication groove,
The electrical connector according to claim 1. The housing is
A locking wall that is formed continuously with the inner wall of the communication groove with which the contact portion abuts and is orthogonal to the insertion direction of the bifurcated connection portion with respect to the communication groove;
The locking portion is
Locking to the locking wall;
The electrical connector according to claim 1.

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