JP2001076795A - Electrical connector - Google Patents

Abstract

(57) [Problem] To provide an electric connector which can be simply, reliably and stably connected by pressure. SOLUTION: An electrical connector of a type comprising an insulating housing 1 for holding a plurality of metallic contacts 21 having contact portions 27, wherein the contact portions 27 are in contact with a core wire C2 of the cable. On the other hand, a lid-shaped pressurizing member 11 having a pressurizing portion 14 formed to be rotatable between an open position and a closed position and pressing the cable to the contact portion 27 by turning to the closed position, The pressing member 11 has a cable receiving groove 13 formed on a surface facing the contact portion 27 when the pressing member 11 rotates, and the receiving groove 13 faces the contact portion when the pressing member 11 is in the open position. 13A, and a holding portion 13C facing the contact portion 27 when in the closed position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector, and more particularly to an electrical connector which presses a core of a cable and a contact portion of a contact.

[0002]

2. Description of the Related Art In this type of electrical connector, a press contact has a contact portion formed by maintaining the surface of a metal plate, and a contact end portion of the contact portion contacts a core wire of a cable. It has been known. One example is disclosed in JP-A-10-255.
921.

As shown in FIGS. 7 and 8 of the accompanying drawings, this known connector has a cable holder 52 fitted into one housing 51 and the other housing 6 connected thereto.
1 holds a contact 62.

[0004] One of the housings 51 is in the shape of a rectangular tube, and a cable holder 52 fitted and held in the housing 51 includes a held portion 53 and a projecting portion 54 projecting outside the housing 51.
And A space 56 for accommodating the cable arranging member 55 is formed between the upper surface of the held portion 53 and the housing 51. The cable arranging member 55 holds a plurality of cables C at a dielectric portion C1 whose outer skin is peeled off and exposed. The cable holder 52
Has a cable guide groove 56 corresponding to each cable from the upper surface to the lower surface, and guides the core wire C2 of the cable exposed from the dielectric portion C1 in a U-shaped manner. I have. The ends of the cores C2 of the plurality of cables are held by a holding tape 57 or the like so that the cores C2 are not separated irregularly.

The contact 62 held by the other housing 61 is formed by punching a metal plate while maintaining its flat surface. In FIG. 7, the contact 62 maintains a plane parallel to the paper surface. The contact 62 includes a base 63 held by the housing 61 and the base 63.
And an elastic arm portion 64 extending in a U-shape from the front, and a connecting portion 65 protruding outside the housing 61. The base 63 is formed with a protrusion 63A that bites into the housing 61 so as to maintain a predetermined position.
A contact portion 64 </ b> A is formed inside the front end of 4.

The two housings 51 and 61 are connected to the projection 54 of one housing 51 by the other housing 6.
The first and second openings 1 and 2 are joined so as to fit each other. And
As shown in FIG. 7, the contact portion 64A makes elastic contact with the core wire C2 of the cable in the guide groove 56 so as to pinch the core wire C2, and is pressed and connected to the core wire C2 at the side end surface of the contact portion 64A. .

[0007]

In the known connector shown in FIGS. 7 and 8, the core wire is exposed at the press-contact portion, so that the core wire C2 is provided in the guide groove 56 of one housing 51. Since not only the dielectric portion C1 but also the dielectric portion C1 is present, the groove width of the guide groove 56 is the size of the diameter of the dielectric portion C1. Therefore, since the width of the guide groove 56 is too large with respect to the core wire C2, the contact portion 6
At the time of pressure contact with 4A, the position of the core wire C2 moves in the groove width direction and is not constant, and the contact becomes unstable. In addition, since the groove width is often larger than the diameter of the cable (dielectric portion) in order to facilitate insertion thereof, the position of the core wire at the time of press-contacting becomes more unstable.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electric connector which can easily insert a cable and can stabilize the pressure contact without moving the position of the cable during the pressure contact.

[0009]

SUMMARY OF THE INVENTION An electrical connector according to the present invention includes an insulating housing for holding a plurality of metal contacts having contact portions. Then, the contact portion is brought into contact with the core wire of the cable to make a press-fit connection.

In the electrical connector of this type, according to the present invention, the pressurizing portion is rotatable between the open position and the closed position with respect to the housing, and presses the cable against the contact portion by turning to the closed position. It has a formed lid-shaped pressing member. The pressing member has a cable receiving groove formed on a surface facing the contact portion when rotating. The receiving groove has an introduction portion facing the contact portion when the pressing member is at the open position, and a holding portion facing the contact portion when the pressing member is at the closed position.

In the present invention having such a configuration, the cable is fed in the longitudinal direction and inserted into the housing with the pressing member in the open position without exposing the core wire from the covering. At that time, the cable is guided by the introduction portion of the receiving groove formed in the pressing member. Thereafter, the pressing member is rotated from the open position to the closed position. As the rotation of the pressure member proceeds, the engagement position of the cable with the receiving groove shifts from the introduction portion to the holding portion. As a result, when the cable is pressed by the pressing portion of the pressing member to the contact portion of the contact and is connected to the cable core by pressure contact, the cable is firmly held by the holding portion, and the position is stabilized. I have.

In the present invention, the pressurizing portion is formed as a groove bottom surface of the holding portion, and the groove width of the receiving groove is set to be substantially the same as or slightly smaller than the diameter of the cable at the holding portion. So that it is larger than the groove width of the holding portion. The cable is a flexible printed circuit board (FPC) or a flexible flat cable (FF
It is also possible to use a flat cable as shown in C), in which case the groove width is similarly set according to the width of the flat cable.

In the receiving groove, a transition portion is formed between the introduction portion and the holding portion, and the width of the transition portion gradually changes from the groove width of the introduction portion to the groove width of the holding portion. Is preferred.

The contact is formed by processing a metal plate, and the contact portion is formed while maintaining the flat surface of the metal plate. It can be taken as a form.

Further, if the receiving groove forms a substantially V-shaped groove bottom surface in which the groove becomes deeper toward the center in the groove width direction, in at least one of the introduction portion and the holding portion,
The position of the cable is more reliably fixed.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG.
An embodiment of the present invention will be described based on the above.

FIG. 1 is a plan view of the connector of this embodiment, FIG. 2 is a cross-sectional view of the connector of FIG. 1, FIG. 2 (A) shows the pressing member in the open position, FIG. ) Respectively show the case when it is in the closed position.

In the figure, the connector has a housing body 1 and a pressing member 11 made of an insulating material, and a plurality of contacts 21 made of a metal plate.

The housing main body 1 includes a main body 2 which extends vertically in FIG. 1 showing a plan view, and a support arm 3 and an overhang 4 which extend back and forth at both ends of the main body 2. ing.
A plurality of contacts 21 described later are held in the main body 2 at predetermined intervals, and project from the main body 2 back and forth. A lid-shaped pressurizing member 11 is located in front of the main body 2, and is supported by shafts 19 provided at both ends thereof so as to be rotatable around the axis 19 </ b> A by the support arm 3. I have. At the end of the pressure member 11, there is provided a locking projection 11A for locking with the edge of the support arm 3, so that the pressure member 11 is locked at the closed position shown in FIG. ing.

Next, the internal structure of the connector according to the present embodiment will be described with reference to FIG. 2 which is a cross-sectional view taken along a plane parallel to the plate surface of the contact 21.

The main body 2 of the housing main body 1 has a slit-shaped holding hole 5 for fitting a plate-shaped contact 21.
Are formed penetrating back and forth.

The contact 21 is formed by shaping a metal plate as described above, but the flat plate surface is maintained as it is. The contact 21 has a base 22 that is pressed into the holding hole 5 of the housing body 1, a connecting portion 23 that extends rearward from the base 22 and projects from the main body 2, and extends forward from the base 22. And an upper arm portion 24 and a lower arm portion 25 which are substantially U-shaped. On the lower edge of the base 22, a locking projection 22A for securing a position in the holding hole 5 is provided. A turning support 26 having an arcuate edge is provided at the tip of the upper arm 24. The center of the arc-shaped edge of the rotation support portion 26 is located on the extension of the axis 12A of the shaft portion 12 provided on the pressing member 11.
Further, the lower arm 25 has flexibility in the vertical direction,
A contact portion 27 formed of two triangular protrusions is formed on the inner edge of the distal end portion.

As shown in FIGS. 2 to 4, the pressing member 11 includes a rotating support portion 2 which forms an arc-shaped edge of the plurality of contacts 21.
A circular arc-shaped rotation guided portion 12 that is rotatably guided by an arc-shaped columnar envelope surface formed by arranging the teeth 6 in a comb shape is formed. The pressure member 11 has a receiving groove 13 for the cable C and a pressure portion 14 at a portion facing the contact portion 27 of the contact 21.

As shown in FIG. 3, the receiving groove 13 of the pressing member 11 has an introduction portion 13A, a transition portion 13B, and a holding portion 13C. The introduction part 13A is the pressing member 1
When the pressing member 11 is at the closed position in FIG. 2C, the holding member 13C is formed at a position facing the contact portion 27 of the contact 21 when the pressing member 11 is at the open position in FIG. It is formed at a position facing the contact portion 27. The transition section 13B is formed in a transition area between the introduction section 13A and the holding section 13C.

The introduction portion 13A has a groove width such that the cable can be easily inserted. In the example shown in FIG. 3, the portion 13A2 near the transition portion 13B slightly extends toward the cable insertion side end. Groove width is widening. The groove width is constant at the depth 13A1 in the cable insertion direction. Here, in the case of the coaxial cable with a shielded wire shown in FIG. 2, the cable refers to a cable in which the shielded wire is removed and a layer of the dielectric C1 remains on the core wire C2.
That is, the introduction portion 13A is formed with a groove width that allows the portion of the dielectric C1 to be easily inserted in the longitudinal direction.
In a normal cable having no shield wire, that is, a cable having only a coating on a core wire,
The groove width is such that this cable can be easily inserted as it is.

The holding portion 13C has a groove width dimension enough to hold the cable (the portion of the dielectric C1), that is, the groove width is the same as or slightly smaller than the diameter of the cable.

The transition portion 13B is formed such that the groove width gradually decreases from the introduction portion 13A toward the holding portion 13C. The decreasing manner may be linear or curved. In the present embodiment, the groove portions of the transition portion 13B and the holding portion 13C form the pressing portion 14.

Further, in the present embodiment, the holding portion 13
An open portion 15 having a wider groove width than the holding portion 13C is formed in a portion subsequent to C.

In the connector of the present embodiment having the above-described configuration, the cable pressure connection is performed in the following manner. First, when the cable is a coaxial cable as shown in FIG. 2, the outer sheath C4 and the shielded wire C3 are removed at the distal end to expose the dielectric C1. In the case of a normal cable having no shielded wire, it may be left as it is. In the present embodiment, a plurality of cables are collectively soldered by soldering a metal sheet-like holding member C5 to each shield wire C3 on the upper surface and the lower surface in a state where the shield wires C3 of the plurality of cables are arranged. It is preferable to hold. Next, with the pressurizing member 11 in an open state, the cable (the exposed portion of the dielectric C1 in the case of a coaxial cable) is inserted into the receiving groove 1 formed in the pressurizing member 11 from the front end.
3 and placed on the contact portion 27 of the contact 21. At this time, the insertion of the cable into the introduction portion 13 is performed through the portion 13A2 near the transition portion to the back portion 13A1.
This is very easy (see FIG. 2A). Thereafter, the pressure member 11 is rotated to bring the pressure member 11 to the closed position in FIG. 2C through the state in FIG. With this rotation, the cable is supported by the transition portion 13B (see FIG. 2B) and then held by the holding portion 13C (see FIG. 2C). In the holding portion 13C, the cable cannot be moved in the groove width direction and is held at a fixed position. Also, the contact portion 27 bites into the cable and comes into contact with the core wire C2. At this time, since the cable does not move in the groove width direction, that is, in the plate thickness direction of the contact as described above, the contact portion 27 does not move. Makes reliable and stable contact with the core wire. Thus, the cable is press-connected to the contact 21 of the connector.

The present invention is not limited to the embodiments shown in FIGS. 1 to 4 and can be modified. For example, as shown in FIG. 5, the receiving groove of the pressurizing member is used to further stabilize the cable in the groove width direction.
The groove bottom 13C1 of the 3C is formed in a V-shaped surface, and when the groove bottom as the pressing portion presses the cable, the wedge force at the groove bottom allows the cable to be reliably held around the center.

The shape of the receiving groove of the pressing member can be further deformed. As shown in FIG. 6A, even if the diameter of the core C2 of the cable C1 is small, the position of the core C2 can be changed. In order to stabilize in the groove width direction, it is preferable to provide a flat groove bottom 13D in the V-shaped groove of the holding portion 13C. By doing so, the contact portion 27 is connected to the cable (dielectric) C1.
In the case of FIG. 5, the cable may escape toward the groove bottom if the diameter is small, but in the case of FIG.
This is avoided by 3D, and the position of the core wire C2 is stabilized.

As shown in FIG. 6B, a ridge 13E may be formed so as to face the cable from the center of the groove bottom. In this case, the dielectric C1 of the cable is
By escaping toward both sides of 3E, the core wire C2 can be stabilized in the groove width direction.

FIG. 6C is a drawing in which the pressing member is partially broken. As shown in FIG. 6C, the present invention is not limited to the ordinary cable described above, but includes a flexible printed board (FP) in which a circuit portion P1 is formed on a flexible board P.
C) or a flat cable C ′ such as a flexible flat cable (FFC) in which a plurality of cables are integrally arranged so as to form one surface. In this case, the receiving groove 13 of the pressing member 11 is used. Is a single wide groove that can accept FPC or FFC.

[0034]

As described above, according to the present invention, the pressurizing member has the receiving groove for introducing and holding the cable, and the receiving groove easily receives the cable at the introduction portion and rotates the pressing member. In addition, since the cable is held by the holding portion so as not to move in the groove width direction, the contact portion of the contact is pressed against the core wire very reliably and stably. As described above, the insertion of the cable is easy and the operation is easy, and the stable pressure contact connection can be automatically performed by the rotation of the pressing member. Further, since the contact portion bites into the cable coating and is pressed against the cable coating, the work of partially removing the coating covering the core wire is not required, and the operation is also simplified in this respect.

[Brief description of the drawings]

FIG. 1 is a plan view of an electric connector according to an embodiment of the present invention.

FIGS. 2A and 2B are cross-sectional views of the connector shown in FIG. 1 when the connector is in use. FIG. 2A shows an open state, FIG. 2B shows an intermediate state, and FIG. 2C shows a closed state.

3A and 3B show a pressing member of the connector of FIG. 2, wherein FIG. 3A is a sectional view, FIG. 3B is a side view, and FIG. 3C is a bottom view.

FIG. 4 is a perspective view of the pressing member of the connector of FIG. 2 as viewed from the side.

FIG. 5 is a pressing member according to another embodiment of the present invention;
(A) is a sectional view, (B) is a side view, and (C) is a bottom view.

6 (A), (B), and (C) show still another embodiment of the present invention, and are diagrams viewed from a direction corresponding to FIG. 5 (C).

FIG. 7 is a perspective view of a conventional connector in a separated state.

FIG. 8 is a cross-sectional view when the connector of FIG. 7 is used.

[Explanation of symbols]

 Reference Signs List 1 housing 11 pressure member 13 receiving groove 13A introduction part 13B transition part 13C holding part 13C1 groove bottom 14 pressure part 21 contact element 27 contact part

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) GG21 GG24 JJ11

Claims (6)

[Claims] 1. An electrical connector comprising a housing made of an insulating material for holding a plurality of metallic contacts having a contact portion, wherein the contact portion contacts a core wire of the cable. A lid-like pressing member formed with a pressing portion that is rotatable between a closed position and presses the cable against the contact portion by turning to the closed position, and the pressing member is rotated when it is turned; A receiving groove for the cable is formed on a surface facing the contact portion. The receiving groove has an introduction portion facing the contact portion when the pressing member is in the open position, and a contact portion when the pressing member is in the closed position. And an opposite holding part. 2. The pressurizing portion is formed as a groove bottom surface of the holding portion. The groove width of the receiving groove is approximately the same as or slightly smaller than the diameter of the cable at the holding portion. The electrical connector according to claim 1, wherein the width is larger than the width of the groove. 3. The cable is a flat cable, the pressing portion is formed as a groove bottom surface in the holding portion, and the groove width of the receiving groove is substantially the same as the width of the flat cable in the holding portion or is equal to that of the flat cable. The electrical connector according to claim 1, wherein the dimension of the introduction portion is slightly larger than the width of the groove of the holding portion. 4. The receiving groove has a transition portion formed between the introduction portion and the holding portion, and the groove width of the transition portion gradually changes from the groove width of the introduction portion to the groove width of the holding portion. Claim 1
An electrical connector according to claim 3. 5. The contact is made by processing a metal plate, and the contact portion is formed while maintaining a flat plate surface of the metal plate. 3. The method according to claim 1, wherein the contact is made.
An electrical connector according to claim 1. 6. The receiving groove, wherein at least one of the introduction portion and the holding portion forms a substantially V-shaped groove bottom in which the groove becomes deeper toward the center in the groove width direction. An electrical connector according to claim 4.