JPH0436152Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a mounting structure for a flexible printed board used in precision equipment such as a video camera.

<Conventional Technology> Conventionally, this type of precision equipment has been required to be small and compact, but on the other hand, it has to be equipped with various actuators, so many of them have been mounted in high density. For example, a multilayer board or double-sided mounting on a board is being used.

<Problems that the invention seeks to solve> However, these methods are expensive, have many technologically immature points, and have considerable difficulties in actual use due to the layout of the installed electrical components. There were restrictions. Furthermore, in particular, conventional flexible printed wiring boards require space in the equipment body, case, etc. to fix their flat parts, and in some cases, this may affect the overall external design. Ta. Furthermore, electrical packaging with a large space factor in terms of area has the disadvantage that space cannot be used effectively if there is volume but no area.

An object of the present invention is to provide a mounting structure for a flexible printed wiring board that eliminates the drawbacks of the conventional example and allows mounting in a space that has volume but no effective area.

<Means for solving the problems> The structure of the present invention to achieve the above-mentioned purpose is as follows.
This will be explained using FIG. 1 which corresponds to an embodiment.

The present invention has an H-shaped protrusion 2 protruding from a base plate 1 for fixing a flexible printed board, and an engagement notch with a protrusion formed on the insertion side provided at the end of the fixed side of the flexible printed board 3. 3a is engaged with the H-shaped protrusion 2, and the flexible printed board 3 is fixedly held perpendicular to the base plate 1.

<Function> In order to fix the flexible printed board 3 to the base plate 1, a notch 3a is provided between the two supports forming the H-shaped protrusion 2 so that the flexible printed board 3 is perpendicular to the base plate 1. Insert from the edge,
By engaging the notch 3a with the horizontal beam of the H-shaped protrusion 2, the flexible printed board 3 is positioned in the three directions of X, Y, and Z, and the flexible printed board 3 is positioned on the base plate 1.
Fixed. The flexible printed board 3 is fixed perpendicularly to the main board 1 by sequentially fitting it into other H-shaped protrusions 2 protruding from the main board 1, and as a result, the flexible printed board 3 is fixed to the main board 1. Can be implemented in a small area.

<Example> Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.

The base plate 1 for fixing the flexible printed board 3 has an H-shaped protrusion 2 movable within the hole 1a so as to weave between mechanical parts 4 (indicated by two-dot chain lines) mounted thereon. There are multiple protruding pieces. The H-shaped protrusion 2 is 2 as shown in FIG.
The book support portions 2a, 2b and the horizontal beam portion 2c connecting both support pillars are integrally molded to form an H-shape, and the distance between the two support portions 2a, 2b is x, and the width of the horizontal beam portion 2c is y. The thickness has z. Further, as shown in FIG. 3, the flexible printed board 3 has a plurality of engagement notches 3a formed on one side edge, and the insertion side opening 3b of the notches 3a protrudes from a bulge 3c.
and its size is width y′ and depth
z′, and if the thickness of the flexible printed board is d, compared to the dimension of the H-shaped protrusion 2, d<
x, y′>y, z′>z.

Therefore, when fixing the flexible printed board 3 to the base plate 1, first insert the edge of the flexible printed board 3 with the notch 3a between the support parts 2a and 2b of the H-shaped protrusion 2, and then When aligning the opening 3b of the notch 3a with the part 2c and pressing lightly, the protrusion 3 of the flexible printed board 3 will be removed.
c is temporarily deformed, but because it has elasticity and restorability, it returns to almost its original state, and the flexible printed board 3 is fixed to the base plate 1 while being positioned in the three axis directions of X, Y, and Z.

Then, by sequentially engaging the notches 3a of the flexible printed board 3 with the H-shaped protrusions 2 protruding between the mechanical parts 4 mounted on the base plate 1 in the same manner as described above, flexible printing is performed. Since the plate 3 is fixed perpendicularly to the base plate 1, it can be mounted in a small area using the conventional dead space.

FIG. 4 shows another embodiment of the present invention, particularly regarding an H-shaped protrusion structure on the base plate. In order to simplify the explanation, the same parts as in the previous embodiment will be described with the same reference numerals.

The base plate 1 is made of a metal plate, and a part of the base plate 1 is
It has a fixed protrusion structure in which an H-shaped protrusion 2 is integrally formed by cutting out and bending it into a letter shape.

In this way, the H-shaped protrusion 2 can be easily formed.

FIG. 5 shows still another embodiment of the present invention, which particularly relates to a structure of a notch for engagement in a flexible printed board.

Engagement notch 3a of flexible printed board 3
A pair of protrusions 3c facing each other are provided in the opening 3b to narrow the width of the opening 3b.

At this time, the supports 2a and 2b are designed to sandwich the flexible printed board from both sides, so that the supports 2a and 2b are mounted without falling down.

FIG. 6 shows an example of how a flexible printed board embodying the present invention is mounted on a base plate.

This is suitable for cases where there is so-called volume but no effective mounting area, and the flexible printed board 3
It is mounted using the H-shaped protrusion 2 of the base plate 1 so that it has a shape that looks like it has been folded many times. By doing so, it becomes possible to mount the device in a dead space with a small area.

<Effects of the invention> As explained above, the present invention has an H-shaped protrusion erected on the base plate, and a protrusion on the insertion side provided on the fixed side edge of the flexible printed board for engagement. By engaging and fixing the notch, it is easy and simple to fix without using screws or soldering.
The flexible printed board can be mounted by positioning the flexible printed board, and since the flexible printed board is fixed almost orthogonally to the base board, it has the effect of enabling mounting in a dead space that has a volume but no effective area. Further, the supports 2a and 2b also have the effect of preventing the flexible printed board from collapsing after being attached.

[Brief explanation of drawings]

Fig. 1 is an implementation perspective view of an embodiment of the mounting structure for a flexible printed board and a base plate according to the present invention, Fig. 2 is a perspective view of the main part of the main board, and Fig. 3 is a plan view of the main part of the flexible printed board. Figure 4 is a perspective view of main parts of another embodiment of the main plate of the present invention,
FIG. 5 is a plan view of a main part of another embodiment of the flexible printed board of the present invention, and FIG. 6 is a top view showing an example of mounting another form of the flexible printed board embodying the present invention. 1... Base plate, 2... H-shaped protrusion, 2a, 2
b...Strut part, 2c...Horizontal beam part, 3...Flexible printed board, 3a...Engagement notch, 3b
...Opening, 3c...Protrusion, 4...Mechanical parts.

Claims (1)

[Scope of utility model registration request] An H-shaped protrusion is provided protrudingly on the base plate for fixing the flexible printed board, and an engagement notch with a protrusion formed on the insertion side is provided on the end side of the flexible printed board to be fixed, and the H-shaped protrusion of the base plate is provided. A mounting structure for a flexible printed board, wherein the flexible printed board is fixed and held perpendicular to the base plate by inserting the engagement notch of the flexible printed board into a shaped projection.