JPH02285698A - Case for electronic apparatus - Google Patents

Abstract

PURPOSE:To make it possible to use a case for various kinds of module units versatilely by a method wherein the case body is provided with a case, which has an opening part for inserting printed boards and has a width an integral multiple wider than a prescribed unit width, and a front cover, which has the common height, depth and width to fit to the above opening part and is the unit width. CONSTITUTION:A case 10 is generally a box of the height H, depth D and width 2W, for example. As there are two printed boards 20 which are housed in the case 10, venting holes 11, engaging parts 12 to 15 and recessed parts 16 exist in two systems corresponding to these boards 20. A front cover 30 basically corresponds to a unit width W and two sheets of front covers are arranged to close an opening part of the case 10. Pawl type engaging parts 35b and 36b on the left side of a front cover 30b and engaging parts 12b and 13b on the left side surface of the opening part are engaged with each other. In the case that three pieces or more of front covers 30 are installed, engaging parts 33 and 34 only on the upper and lower side surfaces of the front cover 30, which is positioned between the other front covers 30, are engaged with engaging parts 14 and 15 of the case 10 and in respect to left and right engaging parts 35 and 36 they are not engaged.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an electronic device housing housing an electronic device such as a printed circuit board inside, and is particularly applicable to a versatile case for many types of module units 1. Concerning improvements in structures that can be used for.

<Prior Art> The present applicant has filed Japanese Patent Application No. 63-24672 and Japanese Patent Application No. 63-24672.
No. 24673 ``Case x'''C for electronic equipment: Proposes various structures of the case. Examples of such electronic equipment include program controller h rollers, power supply units 1~, CP
Various functional units 1- such as a U unit and an input/output (Ilo) unit are provided. Depending on these units, the external dimensions of the casings vary in width.

<Problem to be solved by the invention> However, if the width of the housing differs, it is necessary to prepare a front cover, case, etc. that fits the width, and the cost is 1 to 1.
The problem was that the number of people was increasing.

The present invention has solved these problems, and an object of the present invention is to provide an electronic device casing that can be used universally for many types of module units I.

<Means for Solving the Problems> The present invention, which achieves the above object, is an electronic device having a case having an opening into which a printed circuit board is inserted, and a front cover attached to the opening to close the opening. The equipment casing has the following configuration.

That is, each electronic device housing has a common height and depth, and the case has a width that is an integral multiple of a predetermined unit width, and the common case that fits into the opening of each electronic device housing has a width that is an integral multiple of a predetermined unit width. and the front cover having a height, depth and width of .

Then, if the corresponding case is twice the unit width, place two front covers side by side to close the opening, and if the corresponding case is more than twice the unit width, install the corresponding number of front covers. The feature is that the openings are closed by arranging them side by side.

<Function> Each component of the present invention has a certain function. The width of the guess is an integral multiple of the unit width, so it is standardized.

The front covers are made to fit the unit width, so you only need to attach the required number to match the width of the case. Since the attachment and detachment of the case and the front cover is limited to attachment and detachment of printed circuit boards during manufacturing and maintenance, even if the front cover is separated, there is no significant disadvantage to the assembly work.

<Example> The present invention will be explained below using the drawings.

FIG. 1 is an assembled perspective view showing one embodiment of the present invention.
In the figure, the case 10 is made of a structural material such as plastic, and is roughly box-shaped with a height H1 depth D and a width W (
Unit width W. It has the same shape as the "single" shape, and has ventilation holes 11 for air cooling on the upper and lower surfaces. It has rectangular opening engaging parts 12 and 13 on the left and right sides, a rectangular opening engaging part 14 on the upper side, and a recessed engaging part 15 on the lower side, and each of the engaging parts 12 to 15 is an opening. Located in a nearby location. The recess 16 is provided on the upper side near the back surface and is used when fixing the case 10 to a wall or the like. Part 4] Part 7 is installed on the left side, roughly in the middle, and is used to attach name plates, etc.

One printed circuit board 20 is housed inside the case 10, and a connector 2 for signal connection is provided at the end on the opening side.
,, 22 positions apart.

The front cover 30 is attached to cover the opening of the case 10, is made of substantially the same material as the case 10, and has a roughly lid-like shape, but here a compartment is also provided on the upper side. One part 3132 of the rectangular opening is the connector 21.
Connector 2], 22
It has a slightly larger shape and is used to connect a connector with a cable (not shown). Claw-shaped engaging portion 33
is provided protruding from the opening side end of the upper side.
It engages with the opening engaging portion 14 and can be inserted and removed by the cantilever-like elastic action. The claw-shaped engaging portion 34 is provided to protrude from the opening side end of the lower side surface (or near the lower side surface side of the left and right side surfaces), and engages with the recessed portion engaging portion 15 . The claw-shaped engaging parts 35 and 36 are provided protrudingly from the opening side ends of both the left and right sides, and engage with the opening engaging parts 12 and 13, and can only be inserted and removed by cantilever-like elastic action. Become.

The assembly of the device thus constructed will now be described. The printed circuit board 20 is attached to the case 10, and the front cover 30 is fixed to the case 10. At this time, the claw-shaped engaging portion 33 is engaged with the opening engaging portion 14, the claw-shaped engaging portion 34 is engaged with the recessed engagement portion 15, and the claw-shaped engaging portion 35.36 is engaged with the opening engaging portion 12.13. Match. In this way, one front cover 30 is attached to the single-width case 10.

Next, the tuple width (the width of the case 10 is - times the unit width W) will be explained. FIG. 2 is a perspective view illustrating the assembled state, and FIG. 3 is a perspective view after assembly. In the figure, the case 10 has a roughly box-like shape with a height H1 depth D and a width 2W. Hereinafter, since a tuple is in the form of a combination of two singles, subscripts a and b are added to identify which side it is on. Since there are two printed circuit boards 20 to be accommodated, the ventilation holes 11 are
, the engaging portions 12 to 15 and the recessed portion 16. In this case, since there is no partition wall in the opening, there are opening engaging portions 12 and 13 only on the left and right sides.

The front cover 30 is basically the same as that shown in FIG. 1, and the width is the unit width W. The opening of the case 10 is closed by placing two of them side by side. For the front cover 30a on the right side of the drawing, there is a claw-shaped engaging portion 35a on the right side.
, 36a (not shown) and the opening engaging portion 12a, 1 on the right side.
3a (not shown), but the claw-shaped engaging portion 3 on the left side
5a and 36a (not shown) are free because they have no counterpart. Regarding the front cover 30b on the left side of the drawing, the claw-shaped engaging parts 35b and 36b on the left side engage with the opening engaging parts 1.2b and 13b on the left side, but the claw-shaped engaging parts 35b and 36b on the right side engage with each other. 36b (not shown) is free because it has no counterpart. Preferably, a filler or a fitting mechanism is provided between the left and right front covers 30 so that they can be attached to the case 10 integrally.

The assembled state of the device thus constructed will now be described. FIG. 4 is a cross-sectional view of the device shown in FIG. 3 taken at a height near the opening engaging portion 13 and parallel to the bottom surface. When there are two front covers 30, each front cover 30 is supported by the case 10 on three sides, so that the case 10 has sufficient strength even if the sides that touch each other are not fixed.
Fixed. If the widths of the left and right sides of the front cover 30 are greatly different, the abutting surfaces can be sealed sufficiently for practical use.

Incidentally, in the above embodiment, the cases where one and two front covers 30 are attached to the case 10 are shown, but the present invention is not limited to this, and the case 10 is attached to the reference width W.
. The front cover 30 may be attached accordingly. In this case, the front cover 30 located in the middle has engaging portions 33 on the upper and lower sides.
34 may be engaged with the engaging portions 14 and 15 of the case 10, and the left and right engaging portions 35 and 36 may be left free.

Preferably, members that fit with the left and right side surfaces of the front cover 30 adjacent to the left and right side surfaces of the front cover 30 are provided so that the entire front cover 30 is integrally engaged with the opening of the case 10.

Although the engaging parts 12 to 15 and 33 to 36 are shown as having an opening and a claw shape, the relationship may be reversed, or a combination of a round concave part and a convex part, etc. may be used. It would be good if the two sides were involved and stopped.

<Effects of the Invention> As explained above, according to the present invention, the width of the case 10 is made an integral multiple of the reference width, and a predetermined number of combinations are made according to the width of the case 10 with the width of the Freon I-cover 30 as the reference width. Since the opening is covered with a metal casing, a small number of parts are required for a wide variety of electronic device casings, which increases versatility, lowers manufacturing costs, and facilitates inventory management.

[Brief explanation of drawings]

Fig. 1 is an assembled perspective view showing one embodiment of the present invention, Fig. 2 is a perspective view illustrating an assembled state showing another embodiment of the invention, Fig. 3 is a perspective view after assembly, and Fig. 4 3 is a cross-sectional view of the device shown in FIG. 3 taken at a height near the opening engaging portion 13 and parallel to the bottom surface. DESCRIPTION OF SYMBOLS 10... Case, 12-15... Engaging part (1st and 2nd), 20... Printed circuit board, 30... Front cover, 33-36... Engaging part (3rd and 2nd) 4th). Figure 28b698(6)

Claims (2)

[Claims] (1) In electronic device casings that have a case with an opening into which a printed circuit board is inserted and a front cover that is attached to the opening and closes the opening, each electronic device casing has a common height and The case has a depth and a width that is an integral multiple of a predetermined unit width; and a common height that fits the opening in each electronic device housing;
the front cover having a depth and width, and when the corresponding case is twice the unit width, two front covers are arranged side by side to close the opening;
An electronic device casing characterized in that when the corresponding case is three times or more the width of the unit, a corresponding number of front covers are lined up to close the opening. (2) In electronic device casings that have a case with an opening into which a printed circuit board is inserted and a front cover that is attached to the opening and closes the opening, each electronic device casing has a common height and having a depth and a width that is an integral multiple of a predetermined unit width, and having first engaging portions on the upper and lower sides of the opening at intervals of this integral width;
the case having second engaging portions on the left and right sides of the opening; and a common height that fits the opening in each electronic device casing;
a third engaging part that has a depth and a width and that engages with the first engaging part of the opening when the corresponding case is the same as the unit width; and a second engaging part of the opening. the front cover including a fourth engaging part that engages with the joint part, and when the corresponding case is twice the unit width, the two front covers are arranged side by side, and each front cover and the opening are connected to each other. between the first engaging part, the third engaging part and the second engaging part.
and the fourth engaging part are engaged to close the opening, and when the corresponding case is three times or more the width of the unit, arrange the corresponding number of front covers, and close the front covers at both ends. In this case, the first engaging part and the third engaging part and the second engaging part and the fourth engaging part are engaged with the opening, and in the middle front cover, the first engaging part and the third engaging part are engaged with each other, and the second engaging part and the fourth engaging part are engaged with the opening. A casing for an electronic device, characterized in that the first engaging part and the third engaging part are engaged with each other to close the opening.