JPH06245349A - Joint structure of vertical conductive member and flexible printed wiring board - Google Patents

Abstract

(57) [Summary] [Object] The present invention can be applied to a vertical conductive member that facilitates installation of terminal groups having different shapes by using a flexible printed wiring board as a main constituent of a circuit in an electric junction box or the like. The present invention relates to a flexible printed wiring board connection structure. [Structure] The elastic contact piece 4 is mounted in the recess 3 of the insulating plate D ₁ , the cut-off conductor portion 2 of the flexible printed wiring board C is housed in the recess 3, and the vertical conductive member 1 is placed in the recess 3. It is press-fitted to be electrically connected to the conductor portion 2.

Description

Detailed Description of the Invention

[0001]

2. Description of the Related Art In FIG. 6, a large number of vertical bus bars b are arranged in an electric junction box body a, and a terminal group e ₁ corresponding to connector parts d ₁ , d ₂ , d ₃ provided on a lid c. , E ₂ , e ₃
Is connected to the bus bar b by welding or the like, but it is difficult to accommodate a special arrangement such as a relay or a connector of different terminal size, and the parts of the same circuit are linear. Must be arrayed in, and the restrictions on the array are large.

[0002]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and a flexible printed wiring board (FPC) having a large degree of freedom in circuit design is used instead of a bus bar as a main circuit forming member. It is intended to improve the shortcomings of the prior art.

[0003]

In order to achieve the above object, in the present invention, an elastic contact piece is mounted in the recess of the insulating plate, and the disconnecting conductor portion of the flexible printed wiring board is placed in the recess. A structure is adopted in which the vertical conductive member is housed and press-fitted into the recess to electrically connect to the conductor portion. Further, in the electric connection box, the elastic contact piece is mounted in the recess of the insulating plate and the flexible type is used. The separated conductor portion of the printed wiring board is housed in the recessed portion, and a vertical conductive member is press-fitted into the recessed portion so as to be electrically connected to the conductor portion, and another electrical connection box is formed by the extended portion of the flexible printed wiring board. It is characterized by configuring an electric circuit of.

[0004]

The separating conductor portion of the flexible printed wiring board is brought into pressure contact with the vertical conductive member by the pressing force of the elastic contact piece so as to be conductive.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, A is an electric connection box for power distribution in which fuses and relays are integrated, B is an electric connection box having a joint circuit downstream of the fuse, and C is electric connection boxes A and B.
A flexible printed wiring board is provided between them, and D ₁ and D ₂ are back covers made of an insulating plate.

The male tab-shaped connecting portion 1 of the terminal fitting E mounted on the connector portions A ₁ and A ₂ of the electric junction box A projects on the back side and the thickness of the thick film flexible printed wiring board C of 0.2 mm is increased. A large number of cut-off conductor portions 2 are formed in a printed wiring portion corresponding to the male tab-shaped connection portion 1, and a housing recess 3 is formed in a portion of the insulating plate D ₁ corresponding to the male tab-shaped connection portion 1. In the accommodating recess 3 of the insulating plate D _1, a pressure top 4a is formed.
The folded elastic contact piece 4 (see FIG. 4) is attached, and the cut-off conductor portion 2 of the flexible printed wiring board C is bent into the folded elastic contact piece 4 (see FIG. 3). Therefore, when the insulating plate D ₁ as the back cover is attached and fixed to the electrical connection box A in this state, the male tab-shaped connection portion 1 as the vertical conductive member in the terminal fitting E enters the folded elastic contact piece 4. Due to the elasticity of the elastic contact piece 4, the flexible printed wiring board C is separated by being pressed into contact with the conductor portion 2 for electrical conduction.
It is connected to another terminal fitting E via.

In the embodiment of FIG. 5, a two layer flexible stamp is used.
Printed wiring boards C and C'are two-layer insulation boards D ₁, D₁Through '
The same male tab-shaped contact portion 1 of the terminal fitting E is provided on one side.
2 through the accommodation recess 3 of
It is connected to the individual cut-off conductor portions 2 (see FIG. 5).

A male tab-shaped contact portion 6 is provided on the back side of the bus bar 5 provided corresponding to the connector portion B ₁ of the other electrical junction box B, and the accommodating recessed portion 3 is male in the insulating plate D ₂ as described above. The folded elastic contact piece 4 is formed corresponding to the tab-shaped contact portion 6, and the cut-back conductor portion 2 ′ of the flexible printed wiring board C is bent into the folded elastic contact piece 4.

Therefore, when the insulating plate D ₂ is attached and fixed to the electrical junction box B in this state, the male tab-shaped contact portion 6 of the bus bar 5 enters the folded elastic contact piece 4 and is cut off to be electrically connected to the conductor portion 2 '.

[0010]

As described above, according to the present invention, the elastic contact piece is mounted in the recess of the insulating plate, the disconnecting conductor portion of the flexible printed wiring board is accommodated in the recess, and the vertical type is inserted in the recess. Since a conductive member is press-fitted to be electrically connected to the conductor portion, a terminal group corresponding to a connector of various shapes can be easily formed in an electric connection box or the like, and a flexible printed wiring board It is very convenient to obtain an electrical connection between a plurality of electric junction boxes by extending the electric junction box.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the above.

FIG. 3 is a cross-sectional view of a main part of the above.

FIG. 4 is an exploded perspective view of a main part shown in FIG.

FIG. 5 is a cross-sectional view of an essential part of another embodiment of the present invention.

FIG. 6 is an exploded perspective view of a conventional example.

[Explanation of Codes] A Electric Connection Box B Other Electric Connection Box C Flexible Printed Wiring Board D ₁ , D ₂ Insulation Plate 1, 6 Vertical Conductive Member 2, 2'Cleaving Conductor Part 3 Recess 4 Elastic Contact Piece

Claims (2)

[Claims] 1. An elastic contact piece is mounted in a concave portion of an insulating plate, and a separated conductor portion of a flexible printed wiring board is accommodated in the concave portion, and a vertical conductive member is press-fit into the concave portion to form the conductor. A connection structure between a vertical conductive member and a flexible printed wiring board, which is electrically connected to a part. 2. In the electric junction box, the elastic contact piece is mounted in the recess of the insulating plate, and the disconnecting conductor portion of the flexible printed wiring board is housed in the recess, and the vertical conductive member is placed in the recess. Of the vertical conductive member and the flexible printed wiring board, characterized in that an electric circuit of another electric connection box is constituted by an extended portion of the flexible printed wiring board by press-fitting Connection structure.