JPS622687A - Use of flexible printed wiring board with reinforcing plate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a printed wiring board in which a part or almost all of the flexible printed wiring board is reinforced with a reinforcing plate.

(Prior art) When bending a flexible printed wiring board into a box shape, conventionally, reinforcing plates were attached individually to the area corresponding to the box surface, or
An auxiliary plate 16 having an edge 13 that is split at slits 11 and perforations 12 as shown in FIG. 2(A)
A flexible printed wiring board 15 is attached to the center part 14 of the board, and after processing such as mounting the necessary parts 17 on the wiring board, the edge of the split reinforcing board is folded along the perforation 12. It is removed and used by assembling it into a box shape as shown in Figure 2 to+.

(Problems to be Solved by the Invention) Among the above-mentioned conventional techniques, in the method of attaching reinforcing plates individually, the reinforcing plate part is hard and the part consisting only of the flexible printing board is soft, making it difficult to mount components. There's a problem. In addition, in a flexible printed wiring board with a reinforcing plate as shown in Fig. 2, the edge of the reinforcing plate is required, resulting in large material loss, and in order to form a slit, the slit width must be greater than the thickness of the reinforcing plate. The problem is that it is difficult to manufacture.

(Means for Solving the Problems) The present invention relates to a technique that solves the problems of the prior art described above, and will be explained based on a specific example.

FIG. 1 (A) or (B) is a flexible printed wiring board with a reinforcing plate according to the present invention, 1 is a reinforcing plate, 2 is a flexible printed wiring board,
3 is a perforation, and 4 is a half cut.

A perforation or half-cut is a crack created only in the reinforcing plate, and at that part, the side to which the flexible printed wiring board is not pasted, that is, the reinforcing plate side, is bent outward, and only the reinforcing plate is broken. , the flexible printed wiring board is brought into a connected state. Flexible printed wiring boards are considerably more flexible than reinforcing plates, so even if the entire surface is glued, half-cuts or perforations can only be made on the reinforcing plates, so make sure the reinforcing plate side is on the outside. When split at the perforations, only the reinforcing plate breaks and separates, and the separated parts remain connected by a flexible printed wiring board.

If it is assembled into a box shape by bending it at the separation part, something like the one shown in Fig. 1 (c) will be obtained. Note that 6 is a claw with a hole in the end of the reinforcing plate, and when inserted into the claw ^7 at the other end, the shape becomes stable as a box. Although the component 5 is normally mounted before the reinforcing plate is broken, there is no hindrance to mounting it after the reinforcing plate is broken. In addition, the reinforcing board is not only used as a simple reinforcing board, but also like a rigid printed wiring board, where the reinforcing board itself has a circuit that does not span the cracks. It is also possible to configure The material for the reinforcing plate may be any insulating material that is hard enough to reinforce the flexible printed wiring board and can be broken if broken at a crevice such as a perforation or half-cut, but generally speaking. A paper phenol glass epoxy laminate or the like is used for this purpose.

(Effects of the Invention) According to the method of using the flexible printed wiring board with a reinforcing plate of the present invention described above, cracks such as perforations or half-cuts are formed in the reinforcing plate, and the reinforcing plate and the flexible printed wiring board are attached. Since a combined sheet is used, the dimensions of the bent part can be made smaller than those with slits, etc., and the size of the reinforcing plate itself can be made smaller. Since the bonding can be done on the entire surface, it is possible to achieve the effect of being simple.

[Brief explanation of the drawing]

Figures 1 (a), (b), and (c) are explanatory views of how to use the flexible printed wiring board with a reinforcing plate according to the present invention, and Figures 1 (a) and (b) are reinforcing plates used therein. Figure K1 (c) shows an example of the flexible printed wiring board with the printed wiring board folded. Furthermore, FIGS. 2(a) and 2(b) show a flexible printed wiring board with a reinforcing plate according to the prior art and its use. In the figure, 1 is a reinforcing plate, 2 is a perforation in a flexible printed wiring board 3, 4 is a half cut, 5 is a component, 6 is a claw, and 7 is a claw hole.

Claims (1)

[Claims] (1) Paste a hard reinforcing plate with a crack on one side of a flexible printed wiring board, bend it at the crack so that the reinforcing plate side faces outward, and divide the reinforcing plate into multiple parts. A method for using a flexible printed wiring board with a reinforcing plate, characterized in that the flexible printed wiring board is separated into two parts and connected by the flexible printed wiring board at the separated part.