JP2006260803A - Connector for flexible wiring board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily joint between two or more circuits formed on one flexible wiring board. <P>SOLUTION: In the connector for a flexible wiring board equipped with a pair of insertion holes 3, 4 into which flexible wiring boards 1, 2 themselves, or the flexible wiring board 1 and each end of a wire harness are inserted, and a connector housing 5 fitted with a plurality of electric contactors 6 electrically connecting the flexible wiring boards 1, 2 inserted from insertion holes 3, 4 with each other, or the flexible wiring board 1 with the wire harness, circuits C<SB>1</SB>, C<SB>4</SB>not adjacent to each other among a plurality of circuits C<SB>1</SB>to C<SB>4</SB>on one flexible wiring board 1 are kept connected to the joint 10 formed at an end part side inserted into the connector housing 5, a plurality of circuit conductors 2A of the other flexible wiring board 2 or a plurality of wires of the wire harness are connected with circuit conductors 1A of the one flexible wiring board 1 through electric contactors 6 formed of single pieces. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a connector for a flexible wiring board for connecting circuit conductors of a flexible wiring board such as a flexible printed wiring board (FPC) or a flexible flat cable (FFC) often used for wiring of automobiles and OA equipment.

  This kind of flexible wiring board, for example, FPC, forms a circuit pattern with a circuit conductor made of rolled copper foil, electrolytic copper foil, etc. on an insulating film (base film) such as polyimide or polyethylene terephthalate, and the same as described above. Insulating film (coverlay) is laminated. Therefore, such FPC has flexibility, and the circuit conductor is patterned on the film, so that wiring is easy to perform, and it is often used especially for connection between complicated circuits and devices. The connector for connecting the FPC includes a connector housing having a pair of insertion ports into which the end portions of the FPC are inserted, and the end portions of the FPCs that are held in the connector housings and inserted from the insertion ports, respectively. Have been developed comprising an electrical connector formed of a single piece each having a connection projection that contacts the circuit conductor of the circuit board, and a pressing body that presses the end of each FPC toward the connection projection. (See Patent Document 1).

According to the connector described in Patent Document 1, as shown in FIG. 7, the end portions of the FPCs 103 and 104 are inserted from the insertion ports 101 and 102 of the connector housing 100, and the circuit conductors 103A and 104A are connected to each other. The contact protrusions 106 of the electrical connector 105 are contacted, and the circuit conductors 103A and 104A of the FPCs 103 and 104 are connected to each other through the electrical connector 105. Further, since the FPCs 103 and 104 are pressed toward the connection protrusion 106 by the pressing body 107, the circuit conductors 103A and 104A and the connection protrusions 106 are pressed against each other, and the reliability of the contact portion is improved. The connector 105 and the connector housing 100 that connect the circuit conductors 103A and 104A of the FPCs 103 and 104 to each other can be unified, so that the production process can be unified, the productivity can be improved, and the production cost can be reduced. That's it.
Japanese Utility Model Publication No. 5-31167 (2nd page, FIG. 1)

  The conventional connector only connects the FPCs straight to each other, that is, connects the circuit conductors of two FPCs in a one-to-one relationship, and one circuit conductor of one FPC and two FPCs of the other FPC. When it is intended to connect circuit conductors, that is, when a joint is required for each circuit, a special joint connector is required. The FPC is a single-sided wiring board in order to reduce costs. In this case, adjacent circuits can be formed by etching and connected to each other, but a special joint connector or joint means is used for connection between non-adjacent circuits. Had to be established. Further, in the above-described conventional example, connection between FFCs is not disclosed, but in the case of FFC, since a joint circuit cannot be formed by etching, it is necessary to provide a joint by piercing or the like. Further, even when a flexible wiring board including FPC and FFC is connected to a wire harness, there are the above-described disadvantages when connecting a plurality of circuits of the flexible wiring board.

  Therefore, the present invention improves the ease of connection, reliability, and reliability of flexible wiring boards such as FPC and FFC, or wire harnesses, as well as joints between circuits without requiring a special joint connector. An object of the present invention is to provide a connector for a flexible wiring board that can reduce costs.

  In order to achieve the above-mentioned object, the present invention is provided with a pair of insertion openings into which flexible wiring boards or flexible wiring boards and wire harness ends are respectively inserted, and has been inserted into the inside from each insertion opening. In a connector for a flexible wiring board having a connector housing provided with a plurality of electrical connectors for electrically connecting flexible wiring boards to each other or between a flexible wiring board and a wire harness, in a plurality of circuits formed on one flexible wiring board Non-adjacent circuits are connected by forming a joint on the end side to be inserted into the connector housing, and a plurality of circuit conductors of the other flexible wiring board or a plurality of wires of the wire harness are connected to the one flexible wiring board. The circuit conductor is connected via an electric connector formed from a single piece.

  According to the present invention, a pair of insertion openings into which the flexible wiring boards or the respective ends of the flexible wiring board and the wire harness are respectively inserted are provided, and the flexible wiring boards inserted from the insertion openings or between the flexible wiring boards are flexible. In a flexible wiring board connector having a connector housing provided with a plurality of electrical connectors for electrically connecting a wiring board and a wire harness, a connector between circuits not adjacent to each other among a plurality of circuits formed on one flexible wiring board A joint is formed and connected on the end side to be inserted into the housing, and a plurality of circuit conductors of the other flexible wiring board or a plurality of wires of the wire harness are connected to the circuit conductor of the one flexible wiring board from a single piece. Since it is connected through the formed electrical connector, Joint between the circuits of easily and will not require special joint connector, it is possible to reduce the cost.

  Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view of a flexible wiring board connector according to an embodiment of the present invention, and a pair of insertion openings 3 and 4 for inserting end portions of two flexible wiring boards 1 and 2 such as FPC or FFC. An electrical connector 6 for connecting the flexible wiring boards 1 and 2 is provided in the connector housing 5 provided with the connector. One flexible wiring board 1 has four circuits C _{1 to} C ₄ formed on one side, and the circuit conductor 1 A exposed at the end of the flexible wiring board 1 inserted into the connector housing 5 from the insertion port 3. There is formed, (excluding those of the circuit C ₁₎ these circuit conductor 1A is one pressed against the pair of connecting protrusions 6B electrical connector 6 to be described later. Three circuits and a circuit conductor 2A are formed on the other flexible wiring board 2, and are in pressure contact with the other of the pair of connection protrusions 6B.

FIG. 2 shows the back surface of one flexible wiring board 1 with its end side cut away, and circuits C ₁ and C ₄ that are not adjacent to each other are connected by joints 10 on both sides. As shown in FIG. 3, the joint 10 has the circuits C _{1 to} C ₄ sandwiched between the base film 1B and the cover lay 1C, and the circuit conductor 1A is exposed at a location where the cover lay 1C is notched. . The joint 10 is not connected to the circuits C ₂ and C ₃ but connects the circuits C ₁ and C ₄ and is sandwiched between the base film 1B and the cover lay 1C.

  4 and 5 show an electrical connector 6 provided in the connector housing 5, in which a pair of connection projections 6B are formed on a plate 6A, and the circuit conductor of the flexible wiring board 1 is formed on one connection projection 6B. The circuit conductor 2A of the flexible wiring board 2 is in pressure contact with the other connection protrusion 6B. As shown in FIG. 4, the connection protrusion 6B may have a spring property obtained by cutting and bending a part of the plate 6A, or a hemispherical shape bulging upward from below the plate 6A. May be. The connection protrusion 6B is in contact with or close to the ceiling of the connector housing 5 so as to strongly sandwich the end portions of the flexible wiring boards 1 and 2.

In the embodiment described above, the circuits C ₁ and C ₄ are connected by the joint 10, but non-adjacent circuits such as C ₁ and C ₃ , C ₂ and C ₄ can be connected, and three or more circuits are connected. Can also be connected.

  In FIG. 6, the other is the wire harness 20, the wire 21 of the wire harness 20 is fixed to the fixing portion 62 at the other end of the electrical connector 60, and the end portion of the flexible wiring board 1 is clamped by the clamping portion 61 at one end side. . The clamping part 61 of the electrical connector 60 is formed with an insertion port for inserting the flexible wiring board 1 between a pair of upper and lower members, and the fixing part 62 is provided with a member for crimping the wire 21.

The perspective view before the assembly which shows embodiment of this invention. The back view of a flexible wiring board. Sectional drawing of a flexible wiring board. The perspective view of an electrical connector. The modification of an electrical connector. The perspective view which shows the connection with a wire harness. The perspective view which shows a prior art example.

Explanation of symbols

1,2 flexible wiring board 1A, 2A circuit conductors 3,4 insertion slot 5 the connector housing 6 electrical connectors 6A plate 6B connecting projection 10 joint C ₁ -C ₄ circuit

Claims (3)

A pair of insertion openings into which the respective ends of the flexible wiring boards or between the flexible wiring boards and the wire harness are respectively inserted are provided. In a flexible wiring board connector provided with a connector housing provided with a plurality of electrical connectors for electrically connecting
Between the plurality of circuits formed on one flexible wiring board, non-adjacent circuits are connected by forming a joint on the end side inserted into the connector housing,
A flexible wiring board characterized in that a plurality of circuit conductors of the other flexible wiring board or a plurality of wires of a wire harness are connected to the circuit conductor of the one flexible wiring board via an electric connector formed from a single piece. Connector.   2. The flexible wiring board according to claim 1, wherein the electrical connector used in connection between the flexible wiring boards has a pair of connection protrusions having a spring property obtained by cutting and bending a part of the plate. 3. Connector.   The electrical connector used for connecting the flexible wiring board and the wire harness has a holding part for holding the circuit conductor exposed by the flexible wiring board on one end side, and a fixing part for fixing the wire end part on the other end side. The connector for flexible wiring boards according to claim 1, wherein the connector is flexible.

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