JP2011165348A - Connection structure of wire harness and printed circuit board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a connection structure of a wire harness and a printed circuit board. <P>SOLUTION: A female terminal 14 is crimped to each of a plurality of wire terminals constituting the wire harness, while a wire harness-side connector for housing the female terminal is not attached to a terminal of the wire harness, but in stead, a substrate-side female connector equipped with a connector housing 11 having a plurality of terminal housings 12 for the female terminal 14 to be directly inserted into a surface of the printed wiring board 10 and at the same time having locking parts of the female terminals is provided. Each of a plurality of male terminals 13 connected with conductors of the printed wiring board is inserted into each terminal housing of the connector housing, and each female terminal at a wire harness side is inserted into each terminal housing of the connector housing on the printed wiring board, so that each male terminal is insertion-coupled, and each female terminal is locked by the terminal locking part. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a connection structure between a wire harness for a vehicle and a printed circuit board, and more specifically, to reduce the number of components required for connection between a terminal of an electric wire terminal of the wire harness and a terminal connected to a circuit of the printed circuit board.

In some cases, a wire harness that is routed to an automobile and an electronic component that houses a printed circuit board that is connected to the wire harness are connected and assembled together in advance by a wire harness manufacturer and delivered to the car manufacturer in this state.
In that case, for example, as shown in FIG. 4, the female terminal 1a is crimped to the end of the electric wire w constituting the wire harness W / H, and the female terminal 1a is placed in each terminal accommodating chamber 1c provided in the connector housing 1b. Is connected to the wire harness W / H. On the other hand, an L-shaped male terminal 3 a is solder-connected to a conductor of the printed circuit board 2, and the male connector 3 inserted into a connector housing 3 b surface-mounted on the printed circuit board 2 is provided. The printed circuit board 2 and the wire harness W / H are connected in circuit by fitting the female connector 1 of the wire harness W / H and the male connector 3 of the printed circuit board 2 together.

  However, in the above-described structure, the connector housing 1b and the male terminal 3a for accommodating the female terminal 1a are not assembled by the wire harness manufacturer and connected by the car manufacturer's line. The connector housings 3b for housing the components are necessary, and there is a problem that the number of parts and the number of work steps cannot be reduced.

As a method of reducing the number of components by reducing the number of connectors, it is also possible to directly connect the wire w terminal on the wire harness W / H side to the circuit of the printed circuit board 2 with the solder 4 as shown in FIG. .
However, there is a problem that the soldering work is required in the manufacturing process of the wire harness W / H, the productivity of the wire harness is lowered, and the equipment for the soldering work is also required, resulting in an increase in manufacturing cost.

Further, as shown in FIG. 6, the connector housing 1b on the wire harness side can be abolished, and the female terminal 1a can be inserted into the connector housing 3b on the board 2 side and fitted with the male terminal 3a.
However, the terminal housing chamber is not provided in the connector housing 3b, and only the male terminal 3a protrudes into the cavity. Therefore, the plurality of female terminals 1a connected to the wire terminals of the wire harness are connected to the connector housing 3b. There is a problem that the female terminals 1a come into contact with each other in the state of being inserted into the inside, or the female terminals 1a come out of the connector housing 3b because there is no locking mechanism.

On the other hand, in Japanese Patent Application Laid-Open No. 2009-26629 (Patent Publication 1), as shown in FIGS. 7A to 7C, a terminal housing 5b that holds a terminal 5a connected to an electric wire terminal of a wire harness W / H. And a terminal cover 5c that allows the terminal housing 5b to be fitted therein, and a first position [FIG. 7B] that covers the tip of the terminal 5a and a second position that fits the terminal housing 5b [FIG. (C)], the terminal cover 5c is slidable with respect to the terminal housing 5b, and the terminal 5a passes through the hole 6a of the substrate 6 when the terminal cover 5c slides from the first position to the second position. A possible connector 5 has been proposed.
According to the above configuration, although the connector on the board 6 side can be eliminated, there is a problem that the structure of the connector 5 on the wire harness W / H side is complicated.

JP 2009-26629 A

  The present invention has been made in view of the above problems, and when the circuit of the wire harness and the printed circuit board is connected and integrally assembled, the number of components required for circuit connection between the wire harness and the printed circuit board is reduced. Is intended.

In order to solve the above-mentioned problems, the present invention integrates a printed circuit board in advance connected to a wire harness before being mounted on a vehicle,
A female terminal is connected to each of a plurality of electric wire terminals constituting the wire harness, but a connector that accommodates the female terminal is not attached to the wire harness,
On the other hand, on the surface of the printed circuit board, a board-side female connector provided with a connector housing having a terminal housing chamber into which a plurality of male terminals connected to conductors of the printed circuit board are respectively inserted, is provided.
The female terminals of the wire terminals of the wire harness are directly inserted into the terminal housing chambers of the board-side female connector, respectively, and the locking portions of the female terminals are terminal locking portions provided in the terminal housing chambers. Provided is a connection structure between a wire harness and a printed circuit board which is locked.

As described above, the printed circuit board connected to the wire harness is provided with the board-side female connector provided with the terminal accommodating chamber having the locking portion of each female terminal. A male terminal connected to the conductor of the printed board is inserted from one end opening side of each terminal accommodating chamber of the connector housing of the board side female connector. At the time of connection with the wire harness, it is possible to fit and connect with the male terminal on the printed circuit board side simply by directly inserting the female terminal of the wire end of the wire harness from the other end opening side of the terminal housing chamber of the board side female connector. it can.
That is, in the present invention, the female terminal connected to the wire terminal on the wire harness side is not inserted and locked in the connector, and the connector on the wire harness side is inserted directly into the female connector mounted on the printed circuit board. Reduce the number of parts of the connector.
In addition, since the female terminals on the board side female connectors are inserted into the respective terminal accommodating chambers of the connector housing, and the female terminals on the wire harness side to be fitted and connected to the male terminals are partitioned by a partition wall, the female terminals are in contact with each other. There is nothing to do. Moreover, since the female terminal inserted in each terminal accommodating chamber is latched by the terminal latching portion, the female terminal can be prevented from coming off.

  Thus, compared to the conventional connection structure, connectors on the wire harness side can be reduced, the connection structure can be simplified, and new processing equipment is not required. Further, the board-side female connector does not require a mechanism for fitting and locking the mating connector housing, and the process of fitting the connector housings together can be omitted.

  The terminal locking portion provided in each terminal receiving chamber of the connector housing of the board side female connector has a locking piece (lance) that elastically locks to a locking hole or protruding portion of the female terminal inserted into the terminal receiving chamber. It is preferable to project from the inner surface of the terminal accommodating chamber.

  Further, the board-side female connector preferably has a connector housing mounted on the surface of the printed board by soldering, but the lower surface of the connector housing is provided with a mounting portion that is screwed to the printed board, and the upper surface of the connector housing. It is preferable that the retainer is provided with an insertion port, and the retainer can be inserted through the insertion port.

  As described above, the connector housing can be firmly fixed to the printed circuit board by providing the attachment portion to be screwed to the printed circuit board on the lower surface of the connector housing of the circuit board side female connector. In addition, by allowing the retainer to be mounted from above the connector housing provided on the printed circuit board, it is possible to prevent half insertion of the female terminal inserted into the terminal accommodating chamber, and to maintain a more reliable electrical connection. be able to.

As described above, according to the present invention, the printed circuit board connected to the wire harness is provided with the board-side female connector provided with the connector housing having the plurality of terminal housing chambers provided with the terminal locking portions. The male terminal connected to the connector housing is inserted into the terminal housing chamber of the connector housing from one end insertion port side and stored. By simply inserting the female terminal connected to each wire terminal of the wire harness into the terminal accommodating chamber of the board side female connector from the other end insertion port side, the wire harness and the printed circuit board can be connected. Can be reduced.
In addition, since the connectors are not fitted and connected, the connector housing of the board-side female connector does not require a connection structure with the counterpart connector housing, and is simplified. In addition, since the connector housing of the female connector on the printed circuit board side into which the female terminal on the wire harness side is inserted is provided with a terminal accommodating chamber provided with a terminal locking portion, the female inserted in each terminal accommodating chamber The terminals do not come into contact with each other, and the female terminals can be prevented from coming off at the terminal locking portions of the terminal housing chambers, so that highly reliable electrical connection can be realized.

In 1st Embodiment, the state before integrating a board | substrate with a wire harness is shown, (A) is a schematic perspective view, (B) is an AA sectional view. The state which integrated the board | substrate with the wire harness is shown, (A) is a schematic perspective view, (B) is a BB sectional drawing. It is a principal part enlarged view which shows the retainer with which the board | substrate side female connector is mounted | worn in the modification of this embodiment. It is a figure which shows a prior art example. It is a figure which shows a prior art example. It is a figure which shows a prior art example. It is a figure which shows a prior art example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 show an embodiment of the present invention.
In the present embodiment, as shown in FIG. 2, the printed circuit board 10 is connected to the wire harness W / H through a connector and assembled in advance in the manufacturing process of the automotive wire harness W / H. That is, instead of wiring a wire harness to a car at a car manufacturer's line that assembles the car, and connecting the wired harness and the printed board, the wire harness is connected to the printed board in advance by the wire harness manufacturer. It is integrated.

As shown in FIGS. 1 and 2, a board-side female connector 20 in which a male terminal 13 connected to a conductor of the printed board 10 is accommodated in a connector housing 11 is screwed to the surface of the printed board 10. .
The connector housing 11 made of a resin molded product includes upper and lower outer peripheral walls 11a, and an inner wall surrounded by the outer peripheral wall 11a. The connector housing 11 includes vertical and horizontal partition walls 11b. Is provided with a terminal accommodating chamber 12. In this embodiment, six terminal accommodating chambers 12 are provided as shown in FIG.

  As shown in FIG. 1B, each terminal accommodating chamber 12 is provided with an insertion port 11d for a male terminal 13 at the left end and the right end opening 11e as an insertion port for a female terminal 14 on the wire harness side. A terminal locking portion (lance) 12 a is projected from the lower inner surface of each terminal accommodating chamber 12. The terminal locking portion 12a is locked to a female terminal 14 that is crimped to the end of each electric wire W of the wire harness W / H.

  A pair of mounting portions 11c for screwing are provided on the lower surface of the left and right outer peripheral walls of the connector housing 11 in a protruding manner. A screw hole is provided in the printed board 10 at a position opposite to the screw hole of the mounting portion 11c and is fastened with a screw N.

The board-side female connector 20 inserts and locks a male terminal 13 connected to a printed conductor (not shown) of the printed board 10 by solder in a terminal accommodating chamber 12 of the connector housing 11. As shown in FIG. 1B, the male terminal 13 has a shape in which a conductive metal plate is bent in an L shape. These male terminals 13 have horizontal tabs 13a inserted from the terminal insertion openings 11d of the terminal accommodating chambers 12 of the connector housing 11, the lower ends of the vertical portions 13b are inserted into the terminal holes 10a of the printed circuit board 10, and the lower ends 13c are soldered. Connected.
After the tabs 13a of the plurality of male terminals 13 are inserted into the terminal housing chambers 12 of the connector housing 11, the connector housing 11 is fixed to the printed circuit board 10 with screws N, and the board-side female connector 20 is mounted on the printed circuit board 10. It is installed.

The female terminal 14 is crimped | bonded to the terminal of each electric wire W of the wire harness W / H. A protruding portion 14b is provided on the lower surface of the electrical contact portion 14a on the distal end side of the female terminal 14 so that the terminal locking portion 12a is locked.
Although the terminal connected to the terminal of the electric wire W of the wire harness W / H is normally accommodated in the connector, in the present invention, the terminal of the electric wire terminal of the wire harness is not accommodated in the connector.

In order to connect the wire harness W / H and the printed board 10 and integrate them in advance, as shown in FIG. 2, the female terminal 14 of the wire terminal of the wire harness W / H is connected to the board-side female connector 20 on the printed board 10 side. The connector housing 11 is inserted into each terminal accommodating chamber 12 through the opening 11e, and the electrical contact portion 14a of the female terminal 14 is fitted with the tab 13a of the male terminal 13. Thereby, the wire harness W / H and the circuit of the printed circuit board 10 are electrically connected, and the wire harness W / H and the printed circuit board 10 are connected and integrated.
In the board-side female connector 20, the protruding portion 14 b of the female terminal 14 inserted into the terminal accommodating chamber 12 is elastically locked to the terminal locking portion 12 a of the terminal accommodating chamber 12 of the connector housing 11, and is prevented from coming off. The
That is, the connection integration of the wire harness W / H and the printed circuit board 10 is performed by inserting the female terminal 14 crimped to the wire terminal of the wire harness W / H into the terminal accommodating chamber 12 of the connector housing 11 of the board-side female connector 20. Just do it.

According to the said structure, when connecting a male-female terminal, a male terminal and a female terminal are each accommodated in a connector housing, and compared with the conventional connection structure which fits connector housings, a wire harness side The connector housing that accommodates the female terminal can be reduced. In addition to cost reduction due to the reduction of the connector housing, it is possible to eliminate the work of attaching the terminals to the connector housing and the work of fitting the connector housings together, improving work efficiency and eliminating the need for new processing equipment. Become.
Further, since the terminal accommodating chamber 12 of the connector housing 11 of the board side female connector 20 into which the female terminal 14 is inserted is partitioned for each female terminal 14 to be inserted, the female terminals 14 inserted into the terminal accommodating chamber 12 are mutually connected. Will not touch. Moreover, since each terminal accommodating chamber 12 of the board | substrate side female connector 20 is equipped with the terminal latching | locking part 12a which latches the female terminal 14 inserted, the omission of the female terminal 14 can be prevented.

FIG. 3 shows a modification of the present embodiment.
In this modification, a retainer insertion port 15 is provided so as to intersect with the length direction of the terminal accommodating chamber 12 of the connector housing 11 of the board-side female connector 20, and the female terminal 14 is inserted into each terminal accommodating chamber 12 of the connector housing 11. After the locking, the synthetic resin retainer 16 can be inserted from the retainer insertion port 15.

  As described above, by attaching the retainer 16 to the connector housing 11 of the board-side female connector 20, half insertion of the female terminal 14 inserted into the terminal accommodating chamber 12 can be prevented, and the reliability is higher. Electrical connection can be maintained.

  The present invention is not limited to the above-described embodiment, and the connector housing 11 of the board-side female connector 20 provided on the printed board 10 may be fixedly mounted on the surface of the printed board 10 with solder.

DESCRIPTION OF SYMBOLS 10 Printed circuit board 11 Connector housing 12 Terminal accommodation chamber 13 Male terminal 14 Female terminal 15 Retainer insertion port 16 Retainer 20 Board side female connector

Claims (3)

Before mounting on the vehicle, the printed circuit board is connected to the wire harness in advance and integrated.
A female terminal is connected to each of a plurality of electric wire terminals constituting the wire harness, but a connector that accommodates the female terminal is not attached to the wire harness,
On the other hand, on the surface of the printed circuit board, a board-side female connector provided with a connector housing having a terminal housing chamber into which a plurality of male terminals connected to conductors of the printed circuit board are respectively inserted, is provided.
The female terminals of the wire terminals of the wire harness are directly inserted into the terminal housing chambers of the board-side female connector, respectively, and the locking portions of the female terminals are terminal locking portions provided in the terminal housing chambers. A connection structure of a wire harness and a printed circuit board characterized by being locked. Provide a mounting portion to be screwed to the printed board on the lower surface of the connector housing of the board-side female connector, and fix the connector housing to the surface of the printed board with screws.
Or the connection structure of the wire harness and printed circuit board of Claim 1 which has mounted the said connector housing on the surface of the printed circuit board with solder.   The insertion port of the retainer is provided on the upper surface of the connector housing of the board side female connector, the retainer can be inserted from the insertion port, and the female terminal is locked by the retainer. Connection structure of wire harness and printed circuit board.

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