JP2013098092A - Pressure welding joint connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint connector capable of connecting electric wires to each other in an optional form by using a pressure welding joint terminal.SOLUTION: Provided is a pair of electric wire guides configured by providing two electric wire insertion grooves in parallel across a partition in a housing of an upper surface opening, cutting off a central part in a lengthwise direction of the partition to communicate, providing a hooking pin projectingly at the communication position, and causing electric wires inserted from one end side or both ends in the lengthwise direction of the electric wire insertion grooves to make a U turn with the hooking pin. A plurality of pairs of the electric wire guides are provided in parallel, at a partition wall or the partition of each pair, a notch for pressure welding blade insertion is provided at both side positions in a lengthwise direction of sandwiching the hooking pin, the pressure welding terminal is pressed into the notch, and insulation coatings of electric wires inserted through a plurality of pairs of electric wire insertion grooves provided in parallel are cut into by a pressure welding blade of the pressure welding terminal to perform pressure welding connection.

Description

  The present invention relates to a pressure-joint joint connector connected to a wire harness, and in particular, a pressure-joint joint connector that joins wires using a pressure-contact terminal that cuts the insulation coating of the covered wire and makes contact with the core wire. It is set as the structure which can respond to a joint.

  Conventionally, as this type of press-contact joint connector, the present applicant has disclosed a first press-contact terminal 101, a first press-contact terminal 101 in a connector housing 100 as shown in Japanese Patent Laid-Open No. 9-213383, as shown in FIGS. The two pressure contact terminals 102 are accommodated, a plurality of electric wires W1, W2, and W3 are wired in parallel in the connector housing 100, and these electric wires are pushed into the blade portions 101a and 102a of the first and second pressure contact terminals 101 and 102. Thus, the insulating coating layer of the electric wire is cut and brought into contact with the core wire to joint the electric wires W1, W2, and W3.

  In the conventional pressure welding joint connector as described above, the work of connecting the pressure contact terminal and the core wire of the wire by cutting the insulating coating layer of the wire with the pressure contact terminal can usually connect many wires and the pressure contact terminal simultaneously. So that it is automated. Therefore, when manufacturing a wide variety of small-lot wire harnesses, a pressure-welded joint connector that increases the equipment cost is not suitable.

JP-A-9-213383

  For crimping joint connectors using the above-mentioned crimping terminals, crimp terminals are crimped and connected to the ends of the wires, and the terminals branched from the joint bus bar previously accommodated in the joint connectors are fitted and connected to the crimping terminals of the wires terminals. The joint connector is widely used. The joint connector for fitting the crimp terminal of the electric wire terminal to the terminal of the joint bus bar is suitable for manufacturing a small-lot wire harness because the electric wire and the joint connector can be connected manually.

  However, the operation of connecting the crimp terminal to the electric wire terminal cannot be performed in the line process of arranging the electric wire and assembling the wire harness, and it is necessary to attach the crimp terminal to the electric wire terminal in advance. Further, since the joint bus bar to be connected to the crimp terminal is accommodated and fixed in advance in the joint connector, the connection form by the joint bus bar is fixed, and the joint form of various electric wires cannot be supported. In addition, if the number of terminals branched from the joint bus bar is less than the number of wires connected to the joint, it is necessary to start a new joint connector. However, there is a problem that the size is increased and the arrangement space is increased.

  The present invention has been made in view of the above problems, and it is not necessary to previously attach a terminal to an electric wire, and can be used for connection of the terminal and various joints by the terminal on the assembly line of the wire harness, and It is an object of the present invention to make it possible to provide a variety of small lot wire harnesses inexpensively and efficiently by enabling manual pressure connection.

In order to solve the above-mentioned problem, the present invention is provided in the housing of the upper surface opening, two wire insertion grooves are provided in parallel with the partition wall in between, and the central portion in the length direction of the partition wall is cut out and communicated, A hooking pin protrudes at the communication position, and a set of electric wire guides configured to U-turn the electric wire inserted from one end side or both ends in the length direction of the electric wire insertion groove with the hooking pin, Provide multiple sets of wire guides in parallel,
The partition walls and the partition walls of each set are provided with cuts for inserting press contact blades at both side positions in the length direction sandwiching the hook pin, and the press contact terminals are pushed into the cuts so that the plural sets of the parallel sets are arranged. There is provided a press-contact joint connector configured such that an insulation coating of an electric wire inserted into an electric-wire insertion groove is cut and connected by press-contact with a press-contact blade of the press-contact terminal.

  Since the press-contact joint connector of the present invention connects the electric wires using the press-contact terminals, it can simultaneously connect with each electric wire and connect the electric wires on the assembly line of the wire harness. In addition, it can be stably wired by making U-turns on the wire guide provided in the housing, and a press contact terminal can be pressed between the adjacent wires in the housing by the operator so that it can be connected in a small lot. It can use for the manufacturing process of this wire harness. In addition, since it is possible to arbitrarily and easily change and adjust the arrangement of the electric wires to be wired to the electric wire guide and the press contact terminals connected to the electric wires, this is also suitable for manufacturing a wide variety of small-lot wire harnesses.

  One end of a support plate that holds the press contact terminal is rotatably connected to one end of the housing, and a lid is provided that closes the support plate after being pressed by the press contact terminal. .

  In this way, one end of the support plate that holds the press contact terminal is rotatably attached to the connector housing, and the insulation coating of the electric wire can be cut with the press contact terminal and brought into contact with the core wire simply by rotating the support plate. Therefore, it is possible to reduce the burden on the worker during the pressure welding work.

As the press contact terminal, a first type press contact terminal in which the number of the press contact blades corresponding to the number of wires to be press connected is provided in parallel in the same row, and the number of the press contact blades corresponding to the number of wires to be press contact connected in the same row. At least one of the U-type second-type pressure contact terminals provided in parallel and provided on both sides of the connecting portion exceeding the communication position is used.
The first type press contact terminal is provided with two press contact blades in the same row, and the second type press contact terminal is provided with two press contact blades on opposite sides.

  As described above, since it is a pressure joint joint according to the present invention, there is no need to connect terminals to the wires in advance, and connection between the wires and terminals and connection between the wires via the terminals in the wire harness assembly line. It can be done at the same time and workability can be improved. And since it is set as the structure which a worker can press-connect by a manual operation and it can be set as various connection forms, it is suitable for manufacture of a multi-variety small lot wire harness.

1 is a schematic overall view of an automotive wire harness to which a pressure-welded joint connector according to an embodiment of the present invention is applied. The pressure contact joint connector is shown, (A) is a cross-sectional view before connection by a pressure contact terminal, (B) is a cross-sectional view after connection by a pressure contact terminal. It is the schematic plan view which made a part of said press-contact joint connector into a cross section, (A) shows the state before attachment of an electric wire and a press-contact terminal, (B) shows the state after attachment of an electric wire and a press-contact terminal. It is the A section enlarged view of FIG.2 (B). It is a perspective view which shows the state which attached the press-contact terminal to the support plate assembled | attached in the said press-contact joint connector. (A) and (B) are perspective views of the press contact terminal. It is drawing which shows the press-contact connection state of the electric wire by the said press-contact terminal. (A) is a perspective view of an electric wire, (B) is drawing which shows the state which this electric wire is press-contacted by the press-contact terminal. (A)-(C) are schematic which shows another press-contacting connection state. (A)-(C) are drawings which show a prior art example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
An embodiment is shown in FIGS.
A pressure-joint joint connector 1 (hereinafter abbreviated as “connector 1”) shown in FIG. 1 is attached to a harness 2 that is routed to an automobile at a wire harness manufacturer and assembled as a wire harness. 3 and 4 are connected to the connector 1.

  The connector 1 inserts the wire group 2W (2W-1 to 2W-4) of the harness 2 from one side, and the wire 3W (3W-1, 3W-2) of the harness 3 and the wire 4W (4W of the harness 4) from the other side. -1, 4W-2) is inserted, and these electric wires can be joined in an arbitrary pattern from among the four patterns shown in FIGS. 7 and 9A to 9C. In addition, it is not limited to these four patterns, It can also be set as another connection pattern by changing the number of electric wires or a press-contact terminal.

  As shown in FIGS. 2 and 3, the connector 1 rotatably supports one end of a support plate 6 on the upper end of one side wall 5 a of the housing 5 having an upper opening, and a cutting line provided on the support plate 6. The first type press contact terminal 10 and / or the second type press contact terminal 11 shown in FIGS. 5 and 6A and 6B are press-fitted and held in the insertion gaps 6a and 6b. A lid 7 is rotatably attached to the other side wall 5b of the housing 5 via a hinge 8. After the support plate 6 is tilted so as to close the upper surface opening of the housing 5, the lid 7 is tilted so as to push down the support plate 6. I try to overlap. As shown in FIG. 4, the side lock 7r can be lock-coupled to a locking step 5r provided on the bottom wall 5c while the front end of the lid 7 overlaps the outer surface of the one side wall 5a.

  As shown in FIG. 3, the housing 5 is provided with two wire insertion grooves 12 (12 </ b> A and 12 </ b> B) in parallel with the partition wall 13 interposed therebetween, and a notch is provided at the center in the length direction of the partition wall 13 to communicate with each other. A portion 14 is formed, and a hooking pin 15 is projected from the communication portion 14 to form a set of wire guide portions 20. Four sets of wire guide portions 20 are arranged in parallel in the housing 5 with the partition wall 16 interposed therebetween.

  As shown in FIG. 3 (B), in the wire guide portion 20, the wires 2W, 3W, and 4W to be inserted from one end side or both ends in the length direction of the wire insertion groove 12 are hooked on the hook pin 15 to make a U-turn. Yes. If necessary, the wire insertion groove 12 can be moved straight from one end to the other without making a U-turn.

  The partition wall 16 and the partition wall 13 are provided with incisions 17 and 18 for inserting press contact blades at both side positions in the length direction across the hook pin 15. The notch 17 provided in the partition wall 16 is a groove opened on both surfaces, and the notch 18 of the partition wall 13 provided facing the notch 17 is concave.

  As shown in FIG. 6 (A), the first type pressure contact terminal 10 is provided with two pressure contact blades 22 and 23 on a flat substrate 21 made of a conductive metal plate at an interval. The press contact blades 22 and 23 are provided with blade portions 22b and 23b at the peripheral edges of press contact slots 22a and 23a cut into a U shape. The first type pressure contact terminal 10 is pushed into the notches 17 and 18 for inserting the pressure contact blade on one side of the hooking pin 15 and joints the wires inserted from one side. In addition, the first type pressure contact terminal 10 is inserted into either the insertion gap 6a or 6b of the support plate 6.

As shown in FIG. 6B, the second type press contact terminal 11 has two press contact blades 26 on both side boards 24 and 25 of a U-shaped substrate made of a conductive metal plate in the same manner as the first type press contact terminal 10. 27, 28 and 29 are provided. The press contact blades 26, 27, 28, and 29 are provided with blade portions 26b to 29b at the peripheral edges of press contact slots 26a to 29a cut into a U-shape.
The second-type pressure contact terminal 11 has a U-shaped board connecting portion 30 disposed above the hooking pin 15, and both side boards 24, 25 are notches 17 for inserting pressure-contacting blades on both sides sandwiching the hooking pin 15. , 18 and the wires inserted from both sides are jointed. Further, the second type pressure contact terminal 11 is configured such that the both side substrates 24 and 25 are inserted into the insertion gaps 6 a and 6 b of the support plate 6.

Next, an electric wire joint method using the connector 1 will be described.
As shown in FIG. 3B and FIG. 7, four electric wires 2W-1 to 2W-4 are inserted from one end side of the electric wire insertion grooves 12A and 12B of the electric wire guide portion 20 of the housing 5 to the hooking pin 15. Hook it to make a U-turn and set it in a loop.
Further, two electric wires 3W (3W-1, 3W-2) and two electric wires 4W (4W-1, 4W-2) are inserted into the hooking pins 15 from the other end sides of the electric wire insertion grooves 12A and 12B. Hook it to make a U-turn and set it in a loop. The hooking pins 15 are overlapped with hook portions of the electric wires 2W and 3W, 2W and 4W.

As shown in FIG. 7, the eight electric wires inserted into the connector 1 are jointed into one circuit using four first-type press contact terminals 10 and one second-type press contact terminal 11. .
That is, two first-type pressure contact terminals 10 are inserted into both sides of the insertion gaps 6 a and 6 b of the support plate 6, and the second-type pressure contact terminals 11 are arranged at the center portion sandwiched between the first-type pressure contact terminals 10. The both side substrates are inserted into the insertion gaps 6a and 6b. Thus, the operator pushes down the support plate 6 supporting the first type and second type press contact terminals 10 and 11, and as shown in FIGS. 8A and 8B, the press contact blades use the electric wires 2W, 3W and 4W. The insulating coating h is cut and brought into contact with the core wire c. Thus, the electric wires 2W-1 and 2W-2, 2W-3 and 2W-4, 3W-1 and 3W-2, 4W-1 and 4W-2 are jointed at the first type pressure contact terminal 10. Moreover, since the electric wires 2W-2, 2W-3, 3W-2 and 4W-1 are jointed at the second type pressure contact terminal 11, the eight electric wires are jointed.
After the support plate 6 is thus rotated and the electric wires are jointed by the first and second type press contact terminals 10 and 11, the lid 7 is rotated and stacked on the support plate 6, and the downward pressing force is applied to the support plate 6. To fix the press-contact connection state between the electric wire and the first and second type press contact terminals 10 and 11.

9A, 9B, and 9C show connection patterns different from those of the above-described embodiment.
In FIG. 9A, the electric wires 2W, 3W, 4W are joint-connected using only the first type pressure contact terminal 10.
In FIG. 9B, joint connection is performed using only the second type press contact terminal 11.
In FIG. 9C, joint connection is performed using two first-type pressure contact terminals 10 and one second-type pressure contact terminal 11.

  Furthermore, the number of electric wires to be joint-connected by the connector is not limited to the above eight, and can be arbitrarily changed. Furthermore, you may diversify the form of the electric wire connected jointly by increasing / decreasing the parallel set of the electric wire guide part 20 provided in the connector 1. FIG.

  As described above, in the pressure-joint joint connector of the present invention, the joint connection form between the electric wires can be arbitrarily changed, and the connector housing can be shared even if the number of electric wires to be joined increases or decreases. In addition, since the press contact terminal is supported by simply inserting it into the support plate, and the support plate is a cantilever rotating mechanism, the operator simply pushes the support plate to rotate and pushes it down to add a pressing force to the press contact terminal. It can be press-connected. That is, an operator can press-connect by one-touch manual pressure in-line in the assembly process of the wire harness. In this way, the joint connection between the wires can be easily performed, so the joint connector can be reduced in size and the size of the joint connector can be reduced. Can be reduced.

1 Pressure welding joint connector 2, 3, 4 Harness
2W, 3W, 4W Electric wire 5 Housing 6 Support plate 7 Lid 10 Type 1 pressure contact terminal 11 Type 2 pressure contact terminal 12 (12A, 12B) Wire insertion groove 13 Partition 14 Communication portion 15 Pin for catch 16 Partition wall 17, 18 Cutting Insert 20 Electric wire guide

Claims (4)

Two electric wire insertion grooves are provided in parallel in the housing of the upper surface opening across the partition wall, and the central portion in the length direction of the partition wall is cut out to communicate with each other, and a hooking pin projects from the communication position. Providing a set of wire guides configured to U-turn the wire inserted from one end side or both ends in the length direction of the wire insertion groove with the hooking pin, and providing a plurality of sets of the wire guides in parallel,
The partition walls and the partition walls of each set are provided with cuts for inserting press contact blades at both side positions in the length direction sandwiching the hook pin, and the press contact terminals are pushed into the cuts so that the plural sets of the parallel sets are arranged. A pressure-welded joint connector configured to cut and connect an insulation coating of a wire inserted into a wire insertion groove with a pressure-contact blade of the pressure-contact terminal.   One end of a support plate that holds the press contact terminal is rotatably connected to one end of the housing, and a lid is provided that closes the support plate after being pressed by the press contact terminal. The press-contact joint connector according to claim 1.   As the press contact terminal, a first type press contact terminal in which the number of the press contact blades corresponding to the number of wires to be press connected is provided in parallel in the same row, and the number of the press contact blades corresponding to the number of wires to be press contact connected in the same row. 3. The press-contact joint connector according to claim 1, wherein at least one of the U-type second-type press contact terminals provided in parallel and provided on both sides of the connecting portion exceeding the communication position is used.   4. The pressure-joint joint connector according to claim 3, wherein the first type pressure contact terminal is provided with two pressure contact blades in the same row on a flat plate substrate, and the second type pressure contact terminal is provided with two pressure contact blades on both sides facing each other. .

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