JP2004356012A - Insulation displacement connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate insulation displacement work to an insulation displacement terminal, in an insulation displacement connector. <P>SOLUTION: This insulation displacement connector 1 is composed of a connector housing 10 and a retainer 20; and a flat cable 40 is held to a cable holding part 21 of the retainer 20 in parallel with a surface perpendicular to its fitting direction. The cable holding part 21 is provided with a terminal-side opening 24a for bringing the held flat cable 40 into press contact with the insulation displacement terminals 30, and housing hole insertion post parts 22 inserted into terminal housing holes 11. Only by fitting the retainer 20 with the flat cable 40 held to the connector housing 10, the terminals 30 can be brought into press contact with wires 43, and the terminals 30 can surely be fixed to the connector housing 10 by the post parts 22. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press-connecting connector having a press-connecting terminal pressed against a wire harness made of a flat cable used for an automobile or the like, and particularly to a press-connecting connector capable of easily performing a press-connecting operation with an electric wire.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when a wire of a wire harness is pressed against a press-fitting connector housing a press-fitting terminal having a press-fitting portion for conducting the wire by breaking the coating of the wire, a press-fitting operation using a jig dedicated to press-fitting is performed. (For example, see Patent Document 1). Also, when a flat harness wire composed of a flat cable having a structure in which a plurality of wires are arranged in a plane is pressed against a press-connecting connector, a jig dedicated to press-connecting may be used (for example, See Patent Document 2.).
[0003]
[Patent Document 1]
Japanese Utility Model Laid-Open No. 7-41982 (Page 6, FIG. 7-9)
[Patent Document 2]
JP-A-10-148661 (pages 3-4, FIG. 1-7)
[0004]
[Problems to be solved by the invention]
However, in the press-connecting connectors described in Patent Literature 1 and Patent Literature 2, a jig dedicated to press-fitting is required for press-welding the electric wire. Since it is necessary to press the wires after positioning them, there is a problem that the press welding operation becomes complicated.
[0005]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and facilitates the operation of press-fitting an electric wire to a press-fit terminal accommodated in a press-fit connector, and also allows the press-fit terminal to be securely fixed to a connector housing. The purpose is to provide.
[0006]
[Means for Solving the Problems]
A press-connecting connector according to the present invention is a connector housing having a plurality of metal press-connecting terminals pressed against a flat cable in which a plurality of electric wires are arranged in a plane and a plurality of terminal receiving holes for receiving the plurality of press-connecting terminals. And a retainer that is fitted to the connector housing and holds the flat cable in a straight line along a direction orthogonal to the fitting direction in a state before the fitting. A fitting connection portion that fits with the terminal, a press contact portion having a slit formed at the base end side of the fitting connection portion and into which the electric wire is inserted, and both between the fitting connection portion and the press contact portion And a terminal main body that is connected so as not to be aligned on the same straight line. The connector housing is fitted with another connector housing that houses the counterpart connection terminal. A housing fitting portion, a retainer fitting portion communicating with the plurality of terminal accommodating holes and having an annular retainer fitting wall into which the retainer fits, and the retainer is configured to include the retainer fitting portion; A cable holding portion for holding the flat cable in parallel with a surface orthogonal to the fitting direction at the time of fitting to the mating portion, and a cable protruding from the cable holding portion so as to cover the plurality of terminal accommodating holes. And a receiving hole insertion column portion inserted into the plurality of terminal receiving holes, wherein the cable holding portion is provided in the retainer fitting portion at the time of fitting to the one surface side of the held flat cable. A terminal-side opening for inserting and pressing the electric wire into the press-contact portion is provided.
[0007]
According to the present invention, since the cable holding portion of the retainer is provided with the terminal side opening for pressing the pressure contact terminal on one surface side of the held flat cable, the retainer is fitted to the retainer fitting portion of the connector housing. By fitting (mounting the retainer to the connector housing), it becomes possible to easily press the electric wire of the flat cable held by the retainer holding portion and the press contact portion of the press contact terminal. This makes it possible to easily perform the pressure welding operation between the flat cable and the pressure contact terminal.
In addition, since the cable holding portion of the retainer is provided with an insertion hole insertion column portion that is inserted into a plurality of terminal accommodation holes of the connector housing, the press-contact terminals accommodated in the terminal accommodation hole are pressed against the connector housing by the accommodation hole insertion column portion. Can be securely attached.
[0008]
Note that, for example, concave portions for holding the flat cable in a bent state at the time of fitting are formed on the inner wall surfaces of the pair of opposed retainer fitting walls and the side surfaces of the retainer holding portion, respectively, of the press-connecting connector. Good to be. With this configuration, when the retainer is fitted into the connector housing, the flat cable held by the cable holding portion can be held in a bent state, so that a so-called strain relief structure is provided at the press-contact portion between the flat cable and the press-connecting terminal. Can be provided.
[0009]
And, on the other pair of inner wall surfaces and side surfaces which are opposite to each other except the inner wall surface and the side surface where the concave portion is formed, a retainer locking portion for holding the fitted state between the retainer and the retainer fitting portion is formed. The retainer engaging portion includes a retainer engaging protrusion formed on one of the inner wall surface and the side surface, and a retainer engaging concave portion engaging with the retainer engaging protrusion formed on one of the other. ing.
[0010]
The press-connecting connector may further include, for example, a resin mold portion formed at a fitting portion between the connector housing and the retainer and sealingly fixing the both together with the press-contact portion between the electric wire and the press-connecting portion. The portion further includes, for example, an injection opening for filling a mold resin forming a resin mold portion in the retainer fitting portion on the other surface side of the held flat cable.
[0011]
Further, the cable holding portion of the retainer is connected to, for example, a plurality of holding members which are arranged to face each other via a flat cable and hold and fix the flat cable in its thickness direction, and one end of each of the plurality of holding members. Hinge portion and an engaging portion that engages and fixes the other end portions of the plurality of holding members integrally with each other, and the engaging portion is formed of the plurality of holding members. An engagement recess formed at the other end of one of the holding members, and an engagement projection engaged with the engagement recess formed at the other end of the other one of the plurality of holding members; And a plate engaging piece having the following.
[0012]
Further, the plurality of holding members are formed, for example, on the surface facing the flat cable in accordance with the outer diameter of the coating of each wire constituting the flat cable, and extend in the core line direction of each wire and form a plurality of arrays in the arrangement direction of each wire. Provided fixed groove.
[0013]
The press-connecting connector further includes, for example, a lid formed in a shape having a wall portion that fits on the outer wall surface of the retainer fitting wall and covering the retainer fitting portion, and the lid portion has inner wall surfaces and side surfaces. At least one of a cutout for exposing the flat cable held in the concave portion toward the proximal end of the connector housing as it is and a gap for exposing the flat cable toward the distal end of the connector housing with the flat cable folded 180 °. It is configured with one.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
1 to 3 are perspective views for explaining a press-connecting connector according to an embodiment of the present invention, FIG. 4 is an exploded perspective view of a retainer of the press-connecting connector, and FIG. 5 is AA ′ in FIG. FIG. 6 is a cross-sectional view taken along the line BB ′ of FIG. 3.
The press-connecting connector 1 includes a connector housing 10 mainly made of, for example, a resin molded member, and is attached (fitted) to the connector housing 10 and, before fitting, attaches the flat cable 40 along a direction intersecting the fitting direction. And a retainer 20, which is also made of a resin-molded member, which is held linearly, and a resin mold portion 80 (see FIG. 3) for sealing and fixing the connector housing 10 and the retainer 20 is formed in these fitting portions. It is configured.
[0015]
The connector housing 10 has a plurality of terminal accommodating holes 11 (see FIGS. 5 and 6) for accommodating a plurality of metal pressure contact terminals 30 therein, and a mating connection terminal (see FIG. A housing fitting portion 12 (see FIGS. 5 and 6) for fitting another connector housing accommodating therein a housing (not shown), and an annular retainer fitting wall communicating with the terminal housing hole 11 on the housing base end side. 13, and a retainer fitting portion 14 into which the retainer 20 fits.
[0016]
Note that, in this example, the flat cable 40 held by the retainer 20 has a plurality of electric wires 43 in which an insulating coating 41 and a core wire 42 are covered in a plane, and an insulating resin between the electric wires 43 in the same manner as the insulating coating 41. And has flexibility. A slit 45 is formed in a portion corresponding to the bridge portion 44 at least in a portion held by the retainer 20 in order to facilitate press-contact of the press-contact terminal 30 with a press-contact portion described later. Here, as the flat cable 40, a plurality of single electric wires 43 may be arranged in parallel in a plane.
[0017]
As shown in FIG. 5, the press contact terminal 30 accommodated in the terminal accommodating hole 11 of the connector housing 10 includes, for example, a cylindrical fitting connection portion 31 to which a mating connection terminal is fitted, and a fitting connection portion 31. And a press contact portion 33 having a slit portion 32 formed on the base end side of the flat cable 40 and into which the electric wire 43 of the flat cable 40 is inserted, so that the fitting connection portion 31 and the press contact portion 33 do not line up on the same straight line. And a terminal body 34 to be connected. Note that the fitting connection portion 31 is formed with an elastic contact piece 35 for improving the connection state with the mating connection terminal, for example.
[0018]
On the other hand, the retainer 20 includes a frame-shaped cable holding portion 21 that holds the flat cable 40 in parallel with a surface orthogonal to the fitting direction when the connector housing 10 is fitted to the retainer fitting portion 14, An accommodation hole insertion column portion 22 is provided to project from the holding portion 21 and to be inserted into the terminal accommodation hole 11 so as to close the terminal accommodation hole 11 of the connector housing 10. The cable holding portion 21 of this example is, for example, disposed opposite to each other with a flat cable 40 interposed therebetween, and first and second rectangular frame-shaped first and second holding members 23 and 24 which sandwich and fix the flat cable 40 in its thickness direction (FIG. 4). And the other end of the first and second sandwiching members 23 and 24 is engaged with the hinge 25 that connects one end of the first and second sandwiching members 23 and 24 to each other. It is formed by integrally forming the engaging portion 26 to be fixed. The engaging portion 26 has an engaging concave portion 27 formed at an end of the first holding member 23 opposite to the hinge portion 25 side, and an end portion of the second holding member 24 opposite to the hinge portion 25 side. And an engagement piece 29 having an engagement projection 28 that engages with the engagement recess 27. Here, the first and second holding members 23 and 24 may have a structure in which both can be detachably divided in addition to a structure integrally connected by the hinge portion 25.
[0019]
The first holding member 23 of the cable holding portion 21 is formed with an injection opening 23a for filling, for example, a molding resin for forming a resin mold portion 80 described later, and the second holding member 24 is provided with, for example, a press contact terminal. A terminal-side opening 24 a for inserting the electric wire 43 of the flat cable 40 into the press-contact portion 33 of the flat cable 40 and press-contacting the same is formed. The opposed ends of the first and second holding members 23 and 24 extend in the core wire direction of each of the electric wires 43 formed, for example, in accordance with the coating outer diameter of each of the electric wires 43 constituting the flat cable 40. A plurality of fixing grooves 21c are provided in the direction in which the electric wires 43 are arranged.
[0020]
A plurality of retainer-side recesses 21 a formed in accordance with a coating outer diameter of the electric wire 43 of the flat cable 40 are formed on a pair of side surfaces of the first holding member 23 of the cable holding portion 21. On the pair of inner wall surfaces of the retainer fitting wall 13 facing these retainer-side recesses 21a in the retainer fitting portion 14, a housing-side recess 13a also formed to match the outer diameter of the coating of the electric wire 43 of the flat cable 40. A plurality is formed. When the retainer 20 is fitted to the retainer fitting portion 14 by the retainer-side recess 21a and the housing-side recess 13a, the flat cable 40 held by the retainer holding portion 21 in parallel with a surface orthogonal to the fitting direction is provided. As shown in FIG. 2, in order to maintain the bent state as shown in FIG. 2, it is possible to provide a so-called strain relief structure for a press contact portion between the press contact portion 33 of the press contact terminal 30 and the electric wire 43 of the flat cable 40.
[0021]
A retainer engaging portion is formed on a side surface and an inner wall surface of the cable holding portion 21 and the retainer fitting wall 13 other than the side where the retainer side concave portion 21a and the housing side concave portion 13a are formed. The retainer engaging portion is related to, for example, a retainer engaging protrusion 21 b formed on the side surface of the first holding member 23 of the cable holding portion 21 and a retainer engaging protrusion 21 b formed on the inner wall surface of the retainer fitting wall 13. And the retainer locking recess 13b. With this retainer locking portion, the fitting state between the retainer 20 and the connector housing 10 can be reliably continued.
[0022]
Thus, the retainer 20 holding the flat cable 40 is fitted into the retainer fitting portion 14 of the connector housing 10, and the retainer 20 and the retainer fitting portion 14 are joined together with the press-fitted portion between the electric wire 43 and the press-fitted portion 33 by the resin mold portion 80. , The retainer 20 and the connector housing 10 can be more securely fixed. At this time, the mold resin is filled so as to fill the inside of the retainer fitting portion 14 from the injection opening 23 a formed in the first holding member 23 of the cable holding portion 21 of the retainer 20. In addition, since the retainer 20 is provided with the receiving hole insertion column portion 22 that closes the terminal receiving hole 11 in the second holding member 24 of the cable holding portion 21, the mold resin filled from the injection opening 23a receives the terminal resin. There is no problem that the fitting connection portion 31 of the press contact terminal 30 is blocked by entering the hole 11. In addition, since the receiving hole insertion column 22 presses the press contact terminal 30 received in the terminal receiving hole 11 against the inner surface of the terminal receiving hole 11, the press contact terminal 30 can be securely fixed to the connector housing 10.
[0023]
In the press-connecting connector 1 configured as described above, the electric wire 43 of the flat cable 40 is inserted into the press-contact portion 33 of the press-connecting terminal 30 and press-contacted by simply attaching the retainer 20 holding the flat cable 40 to the connector housing 10. And the press contact terminal 30 can be fixed to the connector housing 10. Further, since the flat cable 40 can be held in a bent state and provided with a so-called strain relief structure, it is possible to realize the press-connecting connector 1 that can easily perform the press-connecting operation and has a strong pulling force on the flat cable 40.
[0024]
As shown in FIG. 3, when the flat cable 40 held in a bent state by the retainer 20 and the connector housing 10 is bent again at the peripheral edge of the retainer fitting wall 13, a stronger strain relief structure is provided. can do. As shown in FIG. 5, the press-connecting connector 1 may further include a lid 90 having a shape that covers the retainer fitting portion 14 having a wall portion 91 that fits on the outer wall surface of the retainer fitting wall 13. good. If the cover 90 is provided, the fitting portion between the retainer 20 and the connector housing 10 can be protected. In this case, the flat cable 40, which is held in a bent state by the housing-side recess 13 a on the inner wall surface of the retainer fitting wall 13 and the retainer-side recess 21 a on the side surface of the retainer holder 21, is connected to the lid 90 as it is. A cutout portion 92 for exposing in the proximal direction of the housing 10 and a gap portion 93 for exposing in the distal direction of the connector housing 10 in a state of being folded 180 ° may be formed. It is possible to change or set the wiring direction of the flat cable 40 pressed against the press-contact terminal 30 of the connector housing 10 by the retainer 20 in the notch 92 or the gap 93 while maintaining the strain relief structure. It becomes possible.
[0025]
【The invention's effect】
As described above, according to the present invention, in the cable holding portion of the retainer, the one side of the held flat cable is provided with the terminal side opening for press-contacting the press-connecting terminal. By fitting to the retainer fitting portion (mounting the retainer to the connector housing), it is possible to easily press the wire of the flat cable held by the retainer holding portion and the press contact portion of the press contact terminal. This makes it possible to easily perform the pressure welding operation between the flat cable and the pressure contact terminal.
[0026]
In addition, since the cable holding portion of the retainer is provided with an insertion hole insertion column portion that is inserted into a plurality of terminal accommodation holes of the connector housing, the press-contact terminals accommodated in the terminal accommodation hole are pressed against the connector housing by the accommodation hole insertion column portion. Can be securely attached.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating a press-connecting connector according to an embodiment of the present invention.
FIG. 2 is a perspective view for explaining the press-connecting connector.
FIG. 3 is a perspective view illustrating the press-connecting connector.
FIG. 4 is an exploded perspective view of a retainer of the press-connecting connector.
FIG. 5 is a sectional view taken along line AA ′ of FIG. 3;
FIG. 6 is a sectional view taken along the line BB ′ of FIG. 3;
DESCRIPTION OF SYMBOLS 1 ... Press-connecting connector, 10 ... Connector housing, 11 ... Terminal accommodation hole, 12 ... Housing fitting part, 13 ... Retainer fitting wall, 13a ... Housing side concave part, 14 ... Retainer fitting part, 20 ... Retainer, 21: Cable holding part, 21a: Retainer side concave part, 22: Housing hole insertion column part, 23: First holding member, 24: Second holding member, 25: Hinge part, 26: Engagement part, 30: Pressure contact Terminals: 31: fitting connection portion, 33: pressure contact portion, 34: terminal body portion, 40: flat cable, 80: resin mold portion, 90: lid portion.

Claims (7)

A plurality of metal insulation displacement terminals that are in contact with a flat cable in which a plurality of electric wires are arranged in a plane,
A connector housing having a plurality of terminal receiving holes for receiving the plurality of press contact terminals,
A retainer that is fitted to the connector housing and holds the flat cable in a straight line along a direction orthogonal to the fitting direction in a state before the fitting,
The plurality of insulation displacement terminals,
A mating connection portion that fits with the mating connection terminal, a press contact portion having a slit formed on the base end side of the mating connection portion and into which the electric wire is inserted, and a portion between the mating connection portion and the press contact portion. A terminal body portion that connects the two so that they are not aligned on the same straight line,
The connector housing includes:
A housing fitting portion that fits with another connector housing that houses the mating connection terminal, and a retainer fitting that communicates with the plurality of terminal receiving holes and has an annular retainer fitting wall that fits the retainer. And a part,
The retainer is
A cable holding portion that holds the flat cable parallel to a surface orthogonal to the fitting direction when the flat cable is fitted to the retainer fitting portion, and protrudes from the cable holding portion to close the plurality of terminal receiving holes. And a receiving hole insertion column portion that is inserted into each of the plurality of terminal receiving holes as described above.
The cable holding section,
A press-connecting connector, comprising: a terminal-side opening for inserting and pressing the electric wire into the press-contact portion in the retainer-fitting portion at the time of the fitting to the one surface side of the held flat cable. A concave portion for holding the flat cable in a bent state at the time of the fitting is formed on each of an inner wall surface of the pair of the retainer fitting walls and a side surface of the retainer holding portion. The press-connecting connector according to claim 1, wherein The other pair of inner wall surfaces and side surfaces opposing each other than the inner wall surface and the side surface where the concave portion is formed, retainer locking for holding the fitted state of the retainer and the retainer fitting portion. Part is formed,
The retainer engaging portion includes a retainer engaging protrusion formed on one of the inner wall surface and the side surface, and a retainer engaging concave portion engaging with the retainer engaging protrusion formed on one of the other. The press-connecting connector according to claim 2, wherein the pressing is performed. A resin mold portion formed at a fitting portion between the connector housing and the retainer and sealingly fixing both together with a press-contact portion between the electric wire and the press-contact portion;
The cable holding portion may further include an injection opening for filling a mold resin forming the resin mold portion in the retainer fitting portion on the other surface side of the held flat cable. The press-connecting connector according to claim 1. The cable holding portion, a plurality of holding members that are arranged to face each other via the flat cable and that hold and fix the flat cable in the thickness direction thereof,
A hinge portion connecting one end of each of the plurality of holding members,
An engaging portion for engaging and fixing the other end portions of the plurality of holding members is integrally formed, and is configured.
The engagement portion includes:
An engagement recess formed at the other end of one of the plurality of holding members;
An engaging piece formed on the other end of the other holding member of the plurality of holding members and having an engaging protrusion engaging with the engaging recess. The press-connecting connector according to any one of claims 1 to 4, wherein The plurality of holding members,
A fixed groove formed on the surface facing the flat cable in accordance with the coating outer diameter of each wire constituting the flat cable, extending in the core wire direction of each wire, and formed and arranged in a plurality in the arrangement direction of each wire. The press-connecting connector according to claim 5, further comprising: It further comprises a lid portion having a wall portion fitted to an outer wall surface of the retainer fitting wall and formed in a shape covering the retainer fitting portion,
The lid portion is a cutout portion for exposing the flat cable held in the inner wall surface and the concave portion of the side surface in the base end direction of the connector housing as it is, and the flat cable is folded at 180 °. The press-connecting connector according to any one of claims 1 to 6, further comprising at least one gap for exposing the connector housing in a distal direction.

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