JPH0581078B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a fixing method for attaching a printed wiring board having a size extending over two bent planes to the inner surface of a casing consisting of two planes.

[Technical background of the invention]

2. Description of the Related Art In recent years, personal computers, word processors, and the like have become widespread, and are increasingly being used in ordinary households. At the same time, the importance of design has increased, and it has become a key point in terms of product quality, along with performance and price.

Now, the above-mentioned equipment always has a built-in printed wiring board as a main unit, but the installed state is such that the printed wiring board 1 is parallel to the relatively wide surface 3 of the outer casing 2 of the equipment, as shown in Figure 2. Normally, it is longer, but due to the design aspect and demands for miniaturization, the third
If it is necessary to attach to the folded surface as shown in the figure, that is, the two surfaces 5a and 5b that intersect at the fold line 4 that intersects at right angles to the paper surface, divide the printed circuit board 6 into two sheets 6a and 6b as shown in Figure 4. Alternatively, as shown in FIG. 5, sub plates 8a and 8b are superimposed on the flexible printed wiring board 7 other than the bent surface 7a. In the above figures, 9 is a plug, and 10 is a wiring cable.

[Problems with background technology]

In the case of FIG. 4, since it is divided into two printed wiring boards, a plug 9 and a wiring cable 10 are required for electrical connection between both boards 6a and 6b, and a correspondingly large area is required. This has been a drawback in terms of cost and miniaturization. In addition, in the case of Fig. 5, although no plugs or cables are required, the flexible printed circuit board 7, which has no rigidity, requires sub-plates 8a and 8b for reinforcement, and the flexible printed circuit board 7 itself is expensive. However, it also had the disadvantage of being extremely costly.

[Purpose of the invention]

The object of the present invention is to provide a method for fixing a printed wiring board that does not have the above-mentioned drawbacks in mounting the printed wiring board over a folded surface.

[Summary of the invention]

The present invention provides a method for fixing a printed wiring board across two planes of a casing having a board mounting surface bent inward at a bent portion, the method comprising: A supporting portion is provided on each side edge opposite to each other across the bent portion and on which the edge of the board is placed, and a supporting portion is provided close to both sides of the bent portion and raised from the board mounting surface at the bent portion. The fixing part presses and fixes the central part of the printed wiring board against the mounting surface, allowing only the central part to be fixed with both edges of the printed wiring board free, making it easy and inexpensive to fix without the need for special materials. It has been made possible.

[Embodiments of the invention]

FIG. 1 is a side view showing an example of an apparatus to which an embodiment of the present invention is applied. The same numbers in this figure as in FIGS. 2 to 5 indicate the same parts.
Further, 11 is a printed wiring board, and 11a shows its state before being tightened. 12 is the board mounting surface of the housing, and 13 and 14 are the boards 11 provided on the housing.
This is a support part that supports the edge of the 15 is mounting surface 1
Mounting seats 17 are provided on both sides of the bent portion 16 of No. 2 and have screws, and reference numeral 17 is a tightening screw that is screwed into the mounting seat 15. In the above assembly operation, first, both side edges of the printed wiring board 11a are placed on the support parts 13 and 14, and then the printed wiring board 11
While pressing the printed wiring board 11a onto the board mounting surface side with both edges of a free end, tighten the mounting screws 17.
Screw onto the mounting seat 15 and tighten. Since the printed wiring board 11 in the tightened state is forcibly warped by the screw fixation, strong fixation can be obtained. However, in this case, the printed wiring board 11 needs to have elasticity that can withstand deformation, and the board mounting surface 12 of the casing needs to have enough rigidity to hold the deformation. Also, the mounted components should be installed so as not to straddle both sides of the bent surface.

Although the above has been described in the fields of personal computers and word processors, it can also be applied to other electronic devices.

〔Effect of the invention〕

The present invention is as described above, and (i) even a printed wiring board that spans two bent surfaces does not need to be divided into two pieces, so the structure can be simplified. (ii)2
The plugs and wiring cables that are required when dividing the circuit board are no longer required, improving the mounting efficiency of circuit functional elements and making the device more compact. (iii) There is no need for a supporting plate for reinforcement as in the case of a flexible printed circuit board. (iv)
It is possible to give more freedom to design and circuit design than before. Effects such as this can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an example of a device to which an embodiment of the present invention is applied, and FIGS. 2 to 5 are side views showing a conventional example. 2: Housing, 11: Printed wiring board, 12: Board mounting surface, 13, 14: Supporting part, 15, 17: Fixed part, 16: Bent part.

Claims (1)

[Claims] 1. A method for fixing a printed wiring board across the two planes of a casing whose board mounting surface is bent inward at a bend, the method comprising: Supports are provided on opposite edges of the board on which the edges of the board are placed, and the center of the board is provided close to both sides of the bent part and rises from the board mounting surface at the bent part. A method for fixing a printed wiring board, characterized in that only the central part of the printed wiring board is fixed, with both edges of the printed wiring board being free ends, using a fixing part that presses and fixes the part to the mounting surface side.