JPH0670272U - Flexible circuit board connection structure - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a flexible circuit board connecting structure capable of easily and surely connecting a connecting component to a flexible circuit board. [Structure] An elastic plate 4 is attached to a flexible circuit board 3 to form a circuit 2
A notch 5 that intersects is formed in the flexible circuit board 3 and the elastic plate 4 that include, and the terminal 10 of the connection component 9 is fitted into the notch 5. In addition, the terminal 10 of the connecting component is provided with a locking projection or a locking groove for the notch 7 of the elastic plate 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible circuit board connection structure capable of easily and reliably connecting a connecting component to a thin flexible circuit board.

[0002]

[Prior art]

 FIG. 8 shows a conventional flexible circuit board connection structure. In this structure, a rigid reinforcing board 17 is attached to the back side of a flexible circuit board 3 formed by printing a circuit 2 on a thin base film 1 with an adhesive 18, and the flexible circuit board 3 including the circuit 2 is attached. A connecting hole 19 is formed through the reinforcing substrate 17 and the connecting hole 19 and the pin-shaped terminal 10 of the connecting component 9 are connected by a solder 20. The connecting part 9 may be a socket 9'as shown in FIG. 9, and in this case, the socket 9'is fitted and connected to the plug 12 fixed to the mating substrate 11.

However, in the above-mentioned conventional structure, there is a limitation that it takes time and effort to connect the components 9 with the solder 20, and the substrates 3 and 17 made of a material that can withstand the heat of fusion of the solder 20 must be used. It was Further, when the plug 12 is obliquely fixed to the mating substrate 11, there is a problem that the socket 9'which is a connecting component cannot be fitted to the plug 12.

[0004]

[Problems to be solved by the device]

 In view of the above-mentioned problems, the present invention provides a flexible circuit board connection structure that enables easy connection of a component to a flexible circuit board and that can securely connect the component to a fixed component such as a plug. The purpose is to

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is to attach an elastic plate to a flexible circuit board, and to form an intersecting cut in the flexible circuit board including the circuit and the elastic plate, and to form the cut. The basic structure is that the terminals of the connecting parts are inserted. It is also possible to provide a structure in which the terminals of the connecting parts are provided with locking projections or locking grooves for the notches of the elastic plate.

[0006]

[Action]

 By inserting the terminal of the connecting component into the cross-shaped cut from the side of the flexible circuit board, the terminal is pressed into contact with the cut of the circuit and connected, and is fixed by the restoring force of the cut of the elastic plate. .

[0007]

【Example】

 1 to 4 show an embodiment of a flexible circuit board connection structure according to the present invention. In this structure, an elastic plate 4 made of rubber or thermoplastic elastomer is adhered to the back side of a flexible circuit board 3 similar to the conventional one, which is formed by printing a circuit 2 on a thin base film 1, with an adhesive material 8. Radial cuts 5 are formed through the circuit board 3 and the elastic plate 4 from the lands 2a of the circuit 2 of the flexible circuit board 3, and the radial cuts 5 make a plurality of opposing oppositions to the flexible circuit board 3. A flexible cut piece 6 and a plurality of opposing elastic cut pieces 7 are formed on the elastic plate 4, respectively, and the pin-shaped terminal 10 of the connecting component 9 is fitted and connected to and fixed to the cut 5. .

Here, as shown in FIGS. 3 to 4, the flexible cutout piece 6 of the flexible circuit board 3 is pressed by the pin-shaped terminal 10 and flexibly deformed in the terminal insertion direction, so that the land cutout portion 2 a ′ of the circuit 2 is changed to the terminal. It is brought into contact with the proximal end of 10. At the same time, the elastic cut piece 7 of the elastic plate 4 is pushed toward the tip of the pin-shaped terminal 10 and protrudes in the same direction, and the terminal 10 is firmly tightened and fixed by the restoring force in the direction of arrow a. The elastic notch 7 also presses the flexible notch 6 in the restoring direction, so that the land notch 2a 'of the circuit 2 is pressed against the surface of the terminal 10.

FIG. 5 is an example in which a socket 9 ′ is used as the connecting component 9, and a plurality of sockets 9 ′ provided in parallel on the elastic plate 4 similar to the above via the flexible circuit board 3 are Even if the mating plug 12 provided on the companion substrate 11 is fixed obliquely, the plug 12 can be fitted straightly by the flexibility and elasticity of the elastic plate 4.

6 to 7 show the engagement of the terminal 10 with respect to the elastic cut piece 7 of the elastic plate 4 by forming the engagement projection 13 and the engagement groove 14 on the pin-shaped terminal 10 of the connection component 9 in the above embodiment. This shows a structure with increased stopping power.

That is, the locking projection 13 of FIG. 6 is integrally formed in a spherical shape at the tip of the pin-shaped terminal 10, and can be easily fitted into the cut 5 between the flexible circuit board 3 and the elastic plate 4, and the elastic plate 4 can be easily inserted. The tip of the elastic cut piece 7 is locked to the base end side of the protrusion 13. Further, the locking groove 14 of FIG. 7 is formed in an annular shape on the periphery of the tip end of the pin-shaped terminal 10, and similarly the tip of the elastic cut piece 7 engages with the locking groove 14.

[0012]

[Effect of device]

 As described above, according to the present invention, it is possible to securely connect and fix the terminals of the connecting component with the simple operation of inserting the terminals of the connecting component into the notches of the flexible circuit board and the elastic plate. As a result, productivity is dramatically improved without the need for conventional troublesome work such as soldering. Further, since there is no thermal influence due to solder, the material of the substrate can be freely set. Furthermore, when a socket is used as the connecting component, even if the mating plug is fixed obliquely, it is possible to easily connect due to the flexibility and elasticity of the elastic plate.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a flexible circuit board connection structure according to the present invention.

FIG. 2 is a vertical sectional view of the same.

FIG. 3 is a perspective view showing the same connection state.

FIG. 4 is a vertical sectional view of the same.

FIG. 5 is a front view showing an application example of the above structure.

FIG. 6 is a vertical cross-sectional view showing one embodiment of a connection terminal locking structure in the above connection structure.

FIG. 7 is a vertical sectional view showing another embodiment of the present invention.

FIG. 8 is a vertical sectional view showing a conventional example.

FIG. 9 is a front view showing an application example of the same.

[Explanation of symbols]

 2 circuit 3 flexible circuit board 4 elastic plate 5 notch 9 connection part 9'socket 10 terminal 13 locking protrusion 14 locking groove

Claims (2)

[Scope of utility model registration request] 1. An elastic plate is attached to a flexible circuit board, intersecting cuts are formed through the flexible circuit board including a circuit and the elastic plate, and terminals of connection parts are fitted into the cuts. A flexible circuit board connection structure comprising: 2. The connection structure for a flexible circuit board according to claim 1, wherein the terminal of the connection component is provided with a locking projection or a locking groove for the notch of the elastic plate.