JPS61170095A - Module structure - 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 an improvement in a module structure in which parts are mounted on a printed board for electronic equipment, communication equipment, etc.

Electronic equipment is a module that has various parts mounted on a printed board at high density to provide unit functions.

It is widely used in communication equipment and the like.

With the demand for downsizing of the entire device, such modules are also required to be downsized.

[Conventional technology]

FIG. 4 is a side sectional view of a conventional module, and FIG. 5 is a perspective view of the module in separated form.

In FIGS. 4 and 5, the module 3 is constructed by mounting a printed board 6 on which a large number of tall mounted components 8 and short mounted components 9 are mounted in a box-shaped case. ing.

A connector 7 for connecting to an external circuit is mounted on one side edge of the printed board 6.

The case is made of synthetic resin, and includes a box-shaped case body 4 on which a printed circuit board 6 is attached tightly to the inside of the bottom plate with the component mounting surface 6a inside, and a cover 5 that is attached to the opening surface of the case body 4. It is composed of. Further, one side wall of the case body 4 is provided with a connector window 4A through which the connector 7 is connected to the outside.

The module 3 configured in this way is installed on the motherboard l.
By selecting the contacts 2 that are arranged in parallel to each other and attaching the connector 7, the contacts 2 are mechanically held on the motherboard l,
It is electrically connected to an external circuit.

In such a module 3, the printed board 6 is housed in the case body 4 and is covered and protected by the cover 5, so that it is not only easy to handle, but also the mounted parts 8.9
No other items will come into contact with it, and no dust will adhere to it.

[Problem that the invention seeks to solve]

However, the conventional module mentioned above has only one printed board.
Since all the parts necessary as a module are mounted on a board, there is a problem that the printed board becomes thick (and the module becomes large).

[Means for solving problems]

The above-mentioned problems with the conventional method include a case in which a connector window is provided on one side wall, components mounted in the case facing each other in parallel with the mounting surface facing inside, and an external circuit on the side edge of at least one printed board. and a flexible printed board that connects the two printed boards on the side edge opposite to the side edge on which the connectors are mounted, and a flexible printed board that connects the two printed boards. This problem is solved by the module structure of the present invention, in which a mounted component with a high height is mounted so as to face a mounted component with a low component height mounted on the other printed board.

[Effect]

According to the means of the present invention, two printed boards are housed in one case, and the space above the mounted component with a low component height is used for the mounted component with a high component height mounted on the other printed board. Therefore, the case can be made relatively thin and short in depth, and the module can be made smaller.

〔Example〕

The present invention will be specifically explained below with reference to illustrated examples. Note that the same reference numerals indicate the same objects throughout the figures.

FIG. 1 is a side sectional view of one embodiment of the present invention, and FIG. 2 is a side sectional view of one embodiment of the present invention.
FIG. 3 is a perspective view of the printed board shown in the figure in an unfolded state, and FIG. 3 is a perspective view of another embodiment of the printed board in an unfolded state.

In FIGS. 1 and 2, the module 10 has a tall mounting component 8 on the left side and a short mounting component 9 on the left side.
a printed board 11 on which are mounted sequentially in parallel on the right side;
In the unfolded state, the mounted parts 8 are placed in parallel with the printed board 11.
and a printed board 12 on which the mounting components 9 are mounted are housed in a case.

A connector 13 is mounted in a connector window 4^ of a printed board 11 that is attached so that the back surface of a component mounting surface 11a is in close contact with the inner surface of the bottom plate of the case body 4. Further, a connector 14 is mounted in the connector window 4A of the printed board 12, which is attached so that the back surface of the component mounting surface 12a is in close contact with the inner surface of the flat plate of the cover 5.

Then, with the printed board 11 and the printed board 12 attached to the case, the connector 14 of the connector 13 is
A protrusion 15 is provided on the side surface that contacts the connector 1.
A recess 16 into which the protrusion 15 fits is provided on the 4 side.

The printed board 11 and the printed board 12 are connected to the connector 13゜1.
The side edge on the opposite side where 4 is mounted is connected by a flexible printed board 20.

Therefore, when the printed board 11 is attached to the case body 4, the printed board 12 is attached to the cover 5, the flexible printed board 20 is bent, and the cover 5 is attached to the case body 4, the height of the components mounted on the printed board 11 is reduced. A mounted component 9 with a low component height mounted on the printed board 12 is located above the high mounted component 8, and a printed board 11 is located below the mounted component 8 with a high component height mounted on the printed board 12. A mounted component 9 with a low component height is located.

Therefore, the sheath thickness of the case can be made slightly larger than the conventional sheath thickness for accommodating one printed board plus the mounting length of the short mounting components.

Furthermore, since the mounted components are mounted on two printed sheets, the printed board can be made smaller and its depth shorter.

In this case, simply housing the printed boards in the case and cover does not guarantee the relative positions of the opposing printed boards, and there is a risk that the parts mounted on the printed boards 11 and 12 may come into contact with each other. .

For this purpose, the connector is provided with a protrusion 15 and a recess 16 that engage with each other. As a result, the mutual positional relationship between the printed circuit board 11 and the printed circuit board 12 is fixed, so even if a large number of components are mounted close to each other, the mounted components will come into contact with mounted components mounted on other printed boards. There's nothing to do.

do not have.

In FIG. 3, the connector 17 is only attached to the printed board 11.
This is implemented. Then, there is a protrusion 1 on the side of the connector 17.
8, and the other printed board 12 is provided with a hole 19 into which the projection 18 is fitted.

With this configuration, the connection between the printed board 12 and the external circuit is made by the connector 17 via the flexible printed board 20, and there is no need to mount a connector on each of the printed boards 11 and 12, making it possible to reduce costs. It is.

〔Effect of the invention〕

As explained above, the present invention accommodates two printed boards in one case to prevent the mounted components from colliding with each other, thereby making the module smaller and lower in cost. It has excellent effects.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of one embodiment of the present invention, Fig. 2 is a perspective view of the printed board shown in Fig. 1 in an unfolded state, and Fig. 3 is an unfolded state of the printed board of another embodiment. 4 is a side sectional view of a conventional module, and FIG. 5 is a perspective view showing the module in separated form. In the figure, 1 is the motherboard, 3.10 is the module, 4 is the case body, 48 is the connector window, 5 is the cover, 6, 11.12 is the printed board, 6a, lla, 12a is the component mounting surface, 7, 13,1
4. 17 is a connector, 15 and 18 are projections, 16 is a recess, 19 is a hole, and 20 is a flexible printed board.

Claims (2)

[Claims] (1) A case with a connector window on one side wall, and a connector that is housed in the case parallel to each other with the component mounting surface facing inside, and that is connected to an external circuit on the side edge of at least one printed board. Two printed boards with
A flexible printed board that connects the two printed boards on the side edge opposite to the side edge on which the connector is mounted, and a mounted component with a high component height is mounted on the other printed board. A module structure characterized by being mounted so as to face low mounted parts. (2) By the engagement means provided on the side surface of the connector, 2
2. The module structure according to claim 1, wherein the mounting positional relationship of the printed boards is fixed.