JPH0645380U - Flexible printed circuit board connection device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a connecting device for electrically connecting flexible wiring boards to each other so that they can be separated from each other, and eliminates the conventional work of connecting a conductive pattern and a connector. The present invention provides a specific configuration in which the size of can be reduced. A protrusion 2 is formed at a position close to the ends of a plurality of conductive patterns 3 formed on a flexible substrate 1, and the conductive patterns 3 are formed on the surface of the substrate 1.
The surface of the flexible substrate 9 and a first flexible printed board having a reinforcing plate 5 having a predetermined gap between the first flexible printed board and the rigid board so as to form a space 7 open to the end side. A second flexible printed circuit board having a plurality of conductive patterns 10 formed on the lower surface of the second flexible printed circuit board and a rigid substrate 13 attached to the lower surface in the vicinity of the end portion. It is configured to be press-fitted into the space through the opening 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connection device for connecting flexible printed circuit boards to each other so that they can be connected to and separated from each other, and is characterized by a specific structure of a low-cost connection device having a simple structure.

[0002]

[Prior art]

 Conventionally, when electrically connecting two flexible printed circuit boards to each other so that they can be connected to and separated from each other, a separately manufactured connector was connected to each printed circuit board to be connected, and the connection was made via the connector.

[0003]

[Problems to be solved by the device]

 However, according to this configuration, it is necessary to connect each terminal of the separately manufactured connector and the conductive pattern of the printed wiring board, and the size of the connector itself is large.

The present invention is to provide a connection device that does not require a connection work with a connector and has a small volume.

[0005]

[Means for Solving the Problems]

 The flexible printed circuit board connection device of the present invention has a plurality of conductive patterns formed on the surface of a flexible base material in parallel with each other from their ends, and has protruding portions at positions close to the ends. And a rigid substrate is attached to the lower surface in the vicinity of the end portion, and a space is formed on the surface of the base material with a predetermined gap between the conductive pattern and the end portion side. The first flexible printed circuit board with a rigid plate attached to it, and a plurality of conductive patterns formed on the surface of the flexible base material in parallel with each other from the end, The second flexible printed circuit board has a rigid substrate adhered to the lower surface of the second flexible printed circuit board, and the end portion of the second flexible printed circuit board is configured to be press fit into the space through the opening. To.

[0006]

[Action]

 According to the above configuration, since the connector portion is formed by utilizing the conductive pattern itself on the flexible printed circuit board, there is no need to connect the conductive pattern and the connector as in the conventional case. Also, since the connector is formed directly on the flexible printed circuit board, its size can be reduced.

[0007]

【Example】

 FIG. 1 is a sectional view showing an essential part of an embodiment of a flexible printed circuit board connecting device of the present invention, and FIG. 2 is an exploded perspective view of the same part. In FIGS. This is a first flexible substrate made of glass epoxy resin or the like, and a plurality of protrusions 2 of about 0.04 mm are integrally formed near one end of the substrate. Reference numeral 3 denotes a plurality of conductive patterns formed so as to extend in parallel with each other from the end portion of the substrate 1, and each conductive pattern 3 is formed so as to pass over each of the protrusions 2, and that portion is projected. Is configured to.

A metal layer 4 having a wear resistance such as palladium is formed on the conductive pattern 3 near the protruding portion, and an insulating layer 6 is formed on the conductive pattern 3 following the metal layer 4. Are formed. Reference numeral 5 is a first reinforcing plate having rigidity as compared with the flexible substrate 1, and a kerf 7 having an opening at an end is formed on one surface thereof so that the flexible substrate is covered with the conductive pattern 3. It is bonded to the top of the 1 by an adhesive.

Reference numeral 8 is a second reinforcing plate made of an aluminum plate or the like having rigidity higher than that of the flexible substrate 1, and the flexible substrate 1 and the second reinforcing plate 8 are respectively joined by an adhesive material. . Reference numeral 9 is a second flexible substrate made of polyimide resin or glass epoxy resin, and extends from one end of the second flexible substrate in parallel with each other at an interval equal to the interval of the conductive patterns 3 formed on the first substrate. Thus, a plurality of conductive patterns 10 are formed. Then, a metal layer 11 having abrasion resistance such as palladium is formed on the conductive pattern 10 near the end portion, and an insulating layer 12 is formed on the conductive pattern 10 following the metal layer 11. There is.

Reference numeral 13 denotes a third reinforcing plate made of glass epoxy resin or the like, which is more rigid than the second flexible substrate 9, and is bonded to the rear surface of the end of the second flexible substrate 9 with an adhesive. ing. The thickness of the joined body of the second flexible substrate 9 and the third reinforcing plate 13 is equal to the depth of the kerf 6.

When the first flexible substrate 1 and the second flexible substrate 9 configured as described above are joined, the second flexible substrate 9 has an opening formed by the cut groove 7. By press-fitting into the conductive pattern 3, the conductive pattern 3 and the conductive pattern 10 are brought into contact with each other via the metal layers 4 and 11, respectively, so that electrical conduction is obtained. At this time, since the protrusions are formed on the first conductive pattern 3, better bonding can be expected.

[0012]

[Effect of device]

 As described above, according to the present invention, since the connector portion is formed by using the conductive pattern itself formed on the flexible substrate, it is necessary to connect the conductive pattern and the connector as in the conventional case. It does not. Also, since the connector is formed directly on the flexible printed circuit board, its size can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a flexible wiring board connecting device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of essential parts of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st flexible board 2 Protrusion 3 and 10 Conductive pattern 4 and 11 Metal layer 5 1st reinforcement board 6 and 12 Insulation layer 7 Cut groove 8 2nd reinforcement board 9 2nd flexible board 13 3rd reinforcement board

Claims (1)

[Scope of utility model registration request] 1. A projecting portion is formed on a surface of a flexible base material at a position close to the ends of a plurality of conductive patterns formed so as to be parallel to each other from the ends thereof.
A rigid substrate is attached to the lower surface in the vicinity of the end portion, and a rigid substrate is formed on the surface of the base material so as to have a predetermined gap between the conductive pattern and the end portion side. A first flexible printed circuit board having a plate attached thereto, and a plurality of conductive patterns formed on the surface of the flexible base material so as to be parallel to each other from the end thereof, and on the lower surface near the end. Connection of a flexible printed circuit board, comprising a second flexible printed circuit board to which a rigid substrate is adhered, and an end portion of the second flexible printed circuit board is configured to be press-fitted into a space through the opening. apparatus.