JP2580492Y2 - Printed circuit board for electric circuit - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a vehicle having a conductive circuit formed on a substrate to form a required electric circuit, and a vehicle instrument panel or a copying machine (PPC), a personal computer (PC), a facsimile machine, or the like. The present invention relates to a printed circuit board for an electric circuit used for an electric circuit configuration of a video tape recorder, an office automation device, and the like.

[0002]

2. Description of the Related Art Referring to FIG. 2, a printed circuit board for an electric circuit (hereinafter simply referred to as a printed circuit board) forms a required circuit by printing and wiring a conductive path 3 on a rigid substrate 4, and if necessary. Electronic components such as diodes and ICs (not shown)
Is mounted on the substrate 4, and the connecting portion 9 at the end of the conductive path 3 is connected to an electric circuit on the other side to form a required circuit and incorporate the electronic component into the circuit. . However, since the conductive path 3 cannot be formed crossing the substrate 4, if the circuit pattern to be formed is complicated and cannot be accommodated by the conductive path structure of the planar printing, the conductive path is formed by using the space above or below the substrate 4. A jumper wire structure in which a circuit is formed by providing a jumper wire 11 that three-dimensionally intersects the road 3, or a stacked structure (not shown) in which a plurality of printed circuit boards are stacked and joined together to form a circuit, or There is a double-sided structure in which conductive paths are provided on both front and back surfaces of a layer substrate.

[0003]

Among the above-mentioned conventional printed circuit boards, the former one having the jumper wire structure requires the individual connection of the single jumper wire 11, so that the operation is complicated and the work is troublesome. At the same time, a defect such as an erroneous connection is likely to occur, and the presence of the jumper wire 11 for space utilization causes a problem that the shape becomes complicated and large. On the other hand, in the case of the latter laminated structure, the whole shape of a printed board in which a plurality of boards are united becomes large and the cost is naturally increased. Since the active surface is used, the mounting posture on the device side is restricted. The present invention provides a printed circuit board that solves the above-mentioned disadvantages of the related art.

[0004]

Means for Solving the Problems The printed circuit board for an electric circuit of the present invention which solves the above technical problem is composed of a circuit board provided with a conductive path and a connection group forming a required circuit, and a circuit board provided on a base film. A conductor is sandwiched by a coverlay film, and an end of the conductor is protruded from an edge of the film to form a conductor connection portion, which is a combination with a flexible cable plate . Connection and conductive
The non-existent connection parts are collectively arranged on the edge, and
The flexible cable boards are overlapped and the conductor connection
Parts and is said conductive path absence connecting portion connecting the circuits formed structure "characteristic, the flexible cable plate, any conductor nonintersecting on the same surface of the exposed or coated single wire conductor, stranded conductor Sequences or cross-sequences are used.

[0005]

The printed circuit board for an electric circuit according to the present invention having the above-mentioned structure comprises a combination of a circuit board having a conductive path of a required circuit and a flexible cable board provided with conductors and protruding from an edge. The circuit is formed by superimposing the circuit board and the flexible cable board and connecting the mutual connection parts, so even if a circuit that causes a three-dimensional intersection is required on a single printed circuit board for electric circuits, When the layers are separated and formed into non-intersecting conductive paths of the circuit board and conductive paths of the flexible cable board, a circuit group in which the conductive paths and the conductive paths are combined can be formed by overlapping the two. .

The flexible cable board is easy to handle as a thin flexible board, and can be formed only by connecting and connecting a single circuit board and the flexible cable board. As compared with the printed circuit board laminated structure, the forming workability is improved, and the whole shape is further reduced in size and size. Since the conductor group of the flexible cable plate forms a plate-like body covered and protected by a film and can be connected to the circuit board at a time, there is little conductor damage, erroneous connection and poor connection, and the reliability of the circuit quality is improved. In addition, the circuit board and flexible cable
When setting the flexible board
Connect the conductor connection protruding from the edge to the edge of the circuit board.
It should be set to the conductive path non-existing connection part juxtaposed to
And the conductive path non-existing connection part is extremely easy to confirm visually.
Therefore, the positioning of the polymerization set is extremely easy and accurate.
Of the circuit board and in the middle of the board other than the edge of the circuit board.
Since there is no connection point with the flexible cable plate,
It is extremely easy to set
There is no. Therefore, the circuit board and the flexible cable board
The workability of the polymerization connection with
Has a specific effect.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description will be given based on embodiments. Referring to FIG. 1 showing an embodiment of the present invention, a printed circuit board 10 for an electric circuit according to the present invention includes a circuit board 1 in which a conductive path 3 forming a required circuit is printed and wired on a rigid board 4. , FIG.
(A) and (B), insulated conductors 7 are arranged in a crossed or non-crossed manner on a base film 5 to form a required circuit, and a coverlay film 6 is covered thereover.
And a flexible cable plate 2 of a flexible plate body sandwiched between a base film 5 and a coverlay film 6.

That is, the conductive path 3 of the circuit board 1 is printed by layering only the conductive path 3 that does not require plane intersection on the substrate 4, and each end of the conductive path 3 is printed with an electric circuit print. Connection portion 9B for connecting substrate 10 to the other circuit
Is formed. The circuit board 1 has no conductive path connected to the conductor 7 of the flexible cable plate 2.
The connecting portions 9A (hereinafter, simply referred to as connecting portions 9A) are connected to the conductor connecting portions 8 of the flexible cable plate 2 at the edges of the substrate 4.
And the connecting portions 9B and 9A
They are collectively provided side by side at the edge of the circuit board 4.

The flexible cable plate 2 includes
A circuit pattern that must be cross-aligned with the conductive path 3 of the circuit board 1 is layered, and a circuit is formed by arranging the conductor 7, and an end of the conductor 7 becomes an exposed conductor. It is formed on the conductor connection portion 8 which protrudes from the edge of the films 5 and 6 and is connected to the connection portion 9A on the circuit board 1 side.

Then, referring to FIG. 1 (C), the flexible cable plate 2 is superposed on the circuit
A and the conductor connection portion 8 are connected to form a single electric circuit printed circuit board 10 having a circuit group in which the third group of conductive paths and the seventh group of conductors are combined and combined.

The printed circuit board 1 for an electric circuit according to the above embodiment.
A value of 0 has the effect described above, and even in the case of a complicated configuration requiring a cross circuit, the forming operation is easy, the quality is stable, and the whole shape is downsized and compact. Then, since only one surface of the substrate 4 is an electrically active surface, the restriction on attachment to equipment is relaxed. There are the above advantages.

The printed circuit board for an electric circuit according to the present invention is not limited to the above-described embodiment, but includes the following changes. In other words, the flexible cable board 2 is formed by crossing bare wire conductors to form an array of intermediate connection branches, or by connecting a part of the conductor connection section 8 of the flexible cable board 2 to the connection section 9B of the conductive path 3. Formed, and further, the circuit board 1
In some cases, electronic components such as diodes and ICs are mounted on the circuit board and incorporated into a circuit, or the substrate 4 is formed of a semi-rigid plate or a flexible plate other than a rigid plate.

[0013]

[Effects of the Invention] As described above, the printed circuit board for an electric circuit according to the present invention can improve the molding workability even in the case of a complicated circuit configuration in which a cross circuit exists, and can be downsized and downsized. This has the effect of stably improving the electrical quality.

[Brief description of the drawings]

1A and 1B show a printed circuit board for an electric circuit according to an embodiment of the present invention, wherein FIG. 1A is a perspective view of its constituent members, FIG. 1B is an enlarged cross-sectional view of the AA section of FIG. 1A, and FIG.

FIG. 2 is a perspective view of a conventional printed circuit board for electric circuits.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circuit board 2 Flexible cable board 3 Conductive path 4 Board 5 Base film 6 Cover lay film 7 Conductor 8 Conductor connection part 9 / 9A / 9B connection part 10 Printed circuit board for electric circuit

Continuation of the front page (56) References Japanese Utility Model Showa 53-129216 (JP, U) Japanese Utility Model Showa 57-64177 (JP, U) Japanese Utility Model Showa 55-169879 (JP, U) Japanese Utility Model Showa 53-150451 (JP) , U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) H05K 1/14 H05K 1/02 H05K 1/11

Claims (2)

(57) [Scope of request for utility model registration] 1. A circuit board provided with a conductive path and a connecting portion group forming a required circuit, a conductor disposed on a base film is sandwiched by a coverlay film, and an end of the conductor is connected to the end of the film. The circuit board is composed of a combination with a flexible cable plate protruding from an edge to form a conductor connection portion.
Is the connection part of the conductive path end and the connection part without conductive path at the edge.
At the same time, the flexible cable is mounted on the circuit board.
The conductor connection part and the conductive path non-existence contact
A printed circuit board for an electric circuit, wherein a circuit is formed by connecting continuation portions . 2. The printed circuit board for an electric circuit according to claim 1, comprising a flexible cable plate in which the insulated wires are crossed and arranged on the same plane.