JPH056702Y2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Detailed Description of the Invention The present invention relates to an improvement of a printed board storage case that is compact and has a simple structure that allows printed boards to be accommodated with a minimum circumferential gap.

(2) Prior Art and Problems A printed circuit board on which electronic components constituting an electronic/communication device are mounted is housed in a housing as a unit and treated as a shield or a functional unit.
A conventional unit of this kind is shown in FIG. 1, where FIG. 1A is a plan view with one lid removed, and FIGS. B and C are cross-sections taken along line B-B and line C-C in figure A, respectively.

The box-shaped housing main body 11 has a frame portion 12 and a bottom plate 18 that are integrated, and an L-shaped metal fitting 1 for fixing the lid is provided on the opening side.
4 is fixed and protrudes inward. Bottom plate 1
3, a pair of Z-shaped printed board mounting brackets 15 are similarly fixed, and a through terminal 16 is attached to the side surface of the frame 12.
Or a wiring member 1 such as a through connector (not shown)
7 is attached, and a rectangular printed board 3 is attached to the printed board mounting bracket 15 with screws 18. Note that 19 is a set screw for the lid 20.

Since electronic and communication devices are required to be densely packaged, it is preferable that the unit be as small as possible, so that it is flat and does not have any extra gaps.

In the gaps before and after the surface of the printed board 3 in figures b and c, circuit components (not shown) are located on the printed board 3.
The required space is implemented to the maximum extent possible.

As shown in Figure a, since the printed board 3 is installed from the opening surface of the housing body 11 with the lid 20 removed, the L-shaped fitting 14 for securing the lid and the through terminal 1
6. Penetration connectors, etc. cannot be attached unless they are smaller than the range of the end protruding into the interior.
That is, the flat surface of the casing requires these gaps around the printed board, and it is unavoidable that the casing becomes larger accordingly. Also, checking the wiring pattern surface on the bottom plate 13 side of the printed circuit board 3 is either impossible or extremely troublesome. There are some problems.

(3) Purpose of the invention The purpose of the invention is to solve the above conventional problems,
The object is to provide a casing whose size can be reduced to the same size as the printed board 3 without changing the thickness direction and without providing almost any clearance around the printed board 3 in plane.

(4) Structure of the invention The above-mentioned purpose is the gist of the structure of the invention, which consists of a frame-shaped casing with openings on both sides; a second lid, a printed board mounting surface protruding inside the frame-shaped housing and formed parallel to the first lid, and a second lid mounting surface, the printed board mounting surface and the second lid mounting surface; and a wiring member provided through the side surface of the frame-shaped housing between the second lid mounting surface and the printed board inserted from the first lid side, and the printed board of the frame-shaped housing This is achieved by a printed board housing housing that is attached to a mounting surface.

(5) Example of the invention The printed board housing case of the invention is shown as an example.
A detailed description will be given below with reference to the drawings. Fig. 2 shows an embodiment of the present invention, in which figure a is a plan view with the lid removed, figures b and c are respectively a
A cross section taken along arrows D-D and E-E in the figure is shown.
In the figure, both sides of the frame-shaped housing 51 are open.
A first lid 52 and a second lid 53 are provided on this opening surface.
is installed.

As shown in Fig. a, the frame-shaped casing 51 includes U-shaped frame members 54 and 55 that are arranged vertically and oppositely, and left and right planar frame members 56 and 57, which are integrally joined together, and an L-shaped frame member that faces each other on the inner surface. L-shaped lid attachment fittings 58 match the end faces, and similar L-shaped printed board attachment fittings 59 are fixed to the left and right side surfaces of the intermediate portion of the frame member. These metal fittings 58 and 59 are arranged at mutually shifted positions so that they do not overlap on the same plane to facilitate screwing.

As is clear from FIGS. b and c, the lid mounting bracket 58 provides and secures a mounting surface 60 for mounting the second lid body 53 on one end surface of the opening of the frame-shaped housing 51;
The printed board mounting bracket 59 provides and secures a mounting surface 61 for the printed board 7 parallel to the first lid 52 at a position a predetermined distance from the other end surface of the frame-shaped housing 51.

The printed board 7 is inserted from the first lid body 52 side and seated on the surface 61 of the L-shaped metal fitting 59, covered with the first lid body 52 provided with a spacer 62 having a screw hole, and then placed on the first lid body 52. Insert the screw 63 from the lid 53 side of No. 2 into the L-shaped fitting 5.
9. Pass through the hole in the printed board 7 and screw into the screw hole in the spacer 62 and tighten. The printed board 7 and the lid 52 are now attached together. As described above, as is clear from figures b and c, it is only necessary to provide the minimum clearance between the printed board 7 and the frame-shaped casing 51 necessary for attachment and detachment, and the frame-shaped casing 51 The inner shape of the body 51 can be made almost the same as the outer shape of the printed board 7.

The second lid 53 may be simply attached with screws 64. Bending around the lids 52 and 53 ensures flatness of the main surfaces of the lids and provides an electromagnetic shielding effect.

The through terminals 65 or through connectors as wiring members provided on the side surface of the frame-shaped housing 51 are provided between the printed board 7 and the second lid 53, so they do not affect the attachment or detachment of the printed board 7. I won't give anything.

If the first lid body 52 and the spacer 62 are separated and integrated with screws, the first lid body 52 and the spacer 62 can
It becomes possible to attach and detach only the lid body 52, the pattern surface of the printed board 7 can be inspected and adjusted, and both sides of the printed board 7 can be seen.

The frame-shaped casing and lid body can be made of relatively thin rolled steel plates, aluminum or other metal plates, but the frame-shaped casing, which is easily deformed, can be made into a frame shape by attaching a printed board using the printed board as a strength member. The casing will be strong. When the lids on both sides are attached, the whole becomes a box-like structure and becomes difficult to deform.

Further, although the means for attaching to the device is omitted, it can be realized by providing leg members on the frame-like housing.

(6) Effects of the invention As described above, according to the print storage case of the present invention, the size of the case can be made almost the same as the printed board plus the thickness of the case, and high density The effects of reducing the size for mounting, improving maintainability, and manufacturability are significant.

[Brief explanation of the drawing]

Figure 1 shows the plane of a conventional printed board housing case.
Figure 2 shows a plane view of an embodiment of the printed board housing case of the present invention, and Figure 2 shows a plane view of an embodiment of the printed board storage case of the present invention, a cross section along D-D, and a cross section along E-E. cross section b
Shown in Figures and c. In the figure, 51 is a frame-shaped housing, 52 is a first lid body, 5
3 is a second lid body, 58 is a lid mounting bracket, 59 is a printed board mounting bracket, and 7 is a printed board.

Claims (1)

[Scope of utility model registration request] A frame-shaped housing with openings on both sides, first and second lids that are removably attached to both sides of the frame-shaped housing and cover the respective openings, and projectingly provided inside the frame-shaped housing. A printed board mounting surface and a second lid mounting surface formed parallel to the first lid, and a side surface of the frame-shaped casing between the printed board mounting surface and the second lid mounting surface. and a wiring member provided through the frame-shaped housing, wherein the printed board is inserted from the first lid side and attached to the printed board mounting surface of the frame-shaped housing. body.