JPH08191190A - Case for electronic apparatus unit - Google Patents

Abstract

PURPOSE: To provide a case for an electronic apparatus unit which can be easily assembled and disassembled. CONSTITUTION: Engaging holes 12 are formed on both sides of a front board 1, and protruding segments 31 are formed on the end edge 30 of a side board 3. The side board 3 is fixed to the front board 1 by engaging the engaging holes with the protruding segments. Thereby, the productivity of an electronic apparatus unit can be improved, and inspection or adjustment of a circuit, exchange of elements, etc., are facilitated, since assembling and disassembling are easy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device unit case for unitizing electronic devices such as measuring devices and control devices and mounting them on a rack, for example.

[0002]

2. Description of the Related Art Conventionally, the electronic device unit case has a front plate for arranging switches and a display section of the device, a back plate for arranging connectors, and the front plate. It is provided with a plate and a back plate, and left and right side plates for protecting a printed circuit board or the like on which elements are mounted, and these parts are assembled by screwing.

However, in the above structure, it takes a lot of time to assemble the case, which is a problem in terms of productivity of the electronic equipment unit. Further, the above case requires a lot of time to disassemble, so that there is a problem that it is not easy to inspect and adjust the circuit and replace the elements. An object of the present invention is to provide an electronic device unit case that can be easily assembled and disassembled.

[0004]

To solve the above problems, an electronic equipment unit case of the present invention comprises a front plate, a back plate, and left and right side plates, and one of the front plate and the side plate is a member. A projecting piece projects from the edge facing the other member in the direction of the other member, and the projecting piece engages in the vicinity of the end of the other member facing the one member. Is formed, and the front plate and the side plate are fixed to each other by the engagement of the both.

[0005]

In the electronic equipment unit case of the present invention having the above-mentioned structure, the front plate and the both side plates are fixed to each other by the engagement of the projecting piece and the engaging portion, so that the screw-fastened portion is accordingly. There are few, and it is easy to assemble and disassemble.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An electronic equipment unit case of the present invention will be described below with reference to the drawings showing an embodiment thereof. As shown in FIG. 1, the electronic device unit case C of this embodiment includes a front plate 1, a back plate 2, and left and right side plates 3 and 3 each formed of a metal plate or the like.

Among the above, the front plate 1 is a rectangular front plate body 10 for arranging switches and display parts of the equipment as described above, and the back plate 2 from both left and right sides of the front plate body 10.
The plate-shaped side plate mounting portions 11 and 11 are provided so as to extend in parallel with the left and right side plates 3 and 3. Of these, the front plate body 10 is formed by press molding or the like from a single plate material in a shape in which the small side pieces 10a and 10b are respectively extended from the four sides toward the back plate 2.

The side plate mounting portion 11 is also made of a single plate material and is fixed to the small side pieces 10b on the short side of the front plate body 10 corresponding to both sides of the front plate 1 by welding or the like. As shown in FIG. 2 (a), the tip 11b on the back plate 2 side
Is bent in a step-like manner through the inclined portion 11c over its entire height so that it is located inward of the case C with respect to the base 11a fixed to the small side piece 10b.

The step between the base 11a and the tip 11b is set so that the outer surface of the tip 11b is located inside the inner surface of the base 11a by the thickness of the side plate 3. Engagement portions (engagement holes) 12 with which projecting pieces 31 of the side plate 3 to be described later are engaged are formed at two upper and lower positions of the side plate attachment portion 11 from the tip portion 11b to the inclined portion 11c. ing. As shown in FIG. 2 (a), the engaging hole 12 has a rectangular shape as a whole, and expanded portions 12a are formed above and below the tip portion 11b.

The back plate 2 is for arranging the connectors and the like as described above, and is made of one rectangular plate material, and at its four corners, as shown by the two-dot chain line arrow in the figure, on both left and right sides. Hole 2 into which a screw N for screwing the plates 3 and 3 is inserted
1 is formed. The side plate 3 is also made of a single rectangular plate material, and projecting pieces 31, 31 project from the upper and lower two positions of the edge 30 on the front plate 1 side in the direction of the front plate 1. The end portion on the back plate 2 side is bent inward of the case C to form the mounting portion 32 of the back plate 2.

As shown in FIG. 2A, the projecting piece 31 is composed of a rectangular tip portion 31a and a base portion 31b having a width narrower than that of the tip portion 31a. The wide tip portion 31a of the projecting piece 31 can pass through the upper and lower expanded portions 12a of the engagement hole 12, but cannot pass through other portions of the engagement hole 12. Further, the base portion 31 is formed such that the vertical dimension W ₂ thereof is substantially equal to the vertical dimension W _{1 of} the engaging hole 13 other than the upper and lower expanded portions 12 a.

The mounting portion 32 has two upper and lower portions,
As shown by the two-dot chain line arrow in FIG. 1, a screw hole 32a into which the screw N inserted through the hole 21 of the back plate 2 described above is screwed is formed. In order to assemble the electronic device unit case C of this embodiment, which comprises the above-mentioned parts, first, the front plate 1
As shown by the white arrow in FIG. 2, the protrusions 31 of the side plate 3 are inserted into the portions of the respective engaging holes 12 of the side plate mounting portion 11 fixed to both sides of the side plate where the expanded portions 12a are formed vertically. To do.

Next, the side plate 3 is rotated as indicated by the black arrow in the figure, and the inner side surface of the side plate 3 is brought into contact with the tip of the side plate mounting portion 11 as shown in FIGS. 2 (b) and 3. The outer surface of the tip portion 31a of the protruding piece 31 is brought into contact with the outer surface of the portion 11b, and the inner surface of the base portion 11a of the side plate mounting portion 11 is brought into contact therewith. Then, since the screw holes 32a of the mounting portions 32, 32 of the side plates 3, 3 are aligned with the holes 21 of the back plate 2, as shown in FIG.
As shown by the two-dot chain line, the screw N is screwed into the screw hole 32a through the hole 21, and the assembly of the electronic device unit case C is completed.

Here, as for both side plates 3 and 3, since the mounting portions 32 and 32 are fixed to the back plate 2, as described above, the inner side surface of the side plate 3 is fixed to the tip portion 11 of the side plate mounting portion 11.
The front plate of the side plate 3 is maintained because the state in which the outer plate of the side plate 3 is brought into contact with the outer face of the tip 31a of the protruding piece 31 is kept in contact with the inner face of the base 11a of the side plate attaching portion 11. Rattling in the left-right direction with respect to 1 is prevented.

Further, as described above, the vertical dimension W ₁ of the engaging hole 12 is substantially the same as the vertical dimension W ₂ of the base portion 31b of the protruding piece 31, so that the front plate of the side plate 3 is The rattling in the vertical direction with respect to 1 is also prevented. Further, the dimension from the edge 30 of the side plate 3 to the end of the tip 31a of the projecting piece 31 on the edge 30 side (reference numeral L ₁ in FIG. 2A).
Is a dimension between a fold on the outer surface side of the tip portion 11b and the inclined portion 11c of the side plate mounting portion 11 and a fold on the inner side surface of the base portion 11a and the inclined portion 11c (see FIG. It almost coincides with the symbol L ₂ ) in a).

As shown in FIGS. 2 (b) and 3, the inner surface of the side plate 3 is attached to the tip portion 11b of the side plate mounting portion 11.
When the outer surface of the tip portion 31a of the projecting piece 31 is in contact with the inner surface of the base portion 11a of the side plate mounting portion 11, the end edge 30 of the side plate 3 is not attached to the side plate mounting portion. 11
Of the front end portion 11b and the inclined portion 11c, which are in contact with each other from the side of the back plate 2 at the folds on the outer surface side, and the front end portion 3 of the protruding piece 31.
1a has an end portion on the side of the end edge 30 and a base portion 11a and an inclined portion 11
Since the inner surface side fold with c is abutted from the front plate 1 side, rattling of the side plate 3 with respect to the front plate 1 in the front-rear direction is also prevented.

In order to disassemble the assembled electronic device unit case C, contrary to the above, first, the screw N is removed to release the fixation of the back plate 2 and the side plates 3 and 3, and then the protruding piece of the side plate 3. The engagement between 31 and the engagement hole 12 of the side plate mounting portion 11 may be released. As described above, since the electronic equipment unit case C of this embodiment is easily assembled and disassembled, the productivity of the electronic equipment unit can be improved, and the inspection and adjustment of the circuit and the replacement of the elements are also easy. .

The structure of the electronic device unit case of the present invention is not limited to the embodiment shown in the drawings. For example, contrary to the illustrated embodiment, even if the side plate is formed with the engaging hole and the side plate mounting portion is formed with the projecting piece, the assembly and disassembly can be performed in the same manner as the embodiment. Further, in the case of the embodiment shown in the drawings, the side plate mounting portion forming the front plate together with the front plate main body was formed with the engaging hole, but such a side plate mounting portion is
It can be omitted. That is, the engaging portion or the protruding piece may be formed directly on the front plate body.

Further, the shapes of the projecting piece and the engaging portion are not limited to those in the illustrated embodiment. For example, a substantially L-shaped protrusion and a pocket-shaped engaging portion that receives the tip of the protrusion can be assembled and disassembled in the same manner as in the embodiment. The electronic device unit case of the present invention may further include a top plate and a bottom plate in addition to the above-mentioned components.

In addition, various design changes can be made without changing the gist of the present invention.

[0021]

As described above in detail, since the electronic equipment unit case of the present invention is easy to assemble and disassemble, the productivity of the electronic equipment unit can be improved and
It has a unique effect that it is easy to inspect and adjust the circuit and replace the elements.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a case for an electronic device unit of the present invention.

2 (a) and 2 (b) are enlarged perspective views showing a main part of the electronic device unit case of the above embodiment.

FIG. 3 is an enlarged perspective view showing a main part of the electronic device unit case of the above embodiment.

[Explanation of symbols]

 C Electronic device unit case 1 Front plate 12 Engagement portion (engagement hole) 2 Back plate 3 Side plate 30 Edge 31 Protrusion

Claims (1)

[Claims] 1. A front plate, a back plate, and left and right side plates, wherein a projecting piece projects from an edge of one of the front plate and the side plate facing the other member toward the other member. An engaging portion with which the projecting piece is engaged is formed in the vicinity of an end portion of the other member facing the one member while being provided, and the front plate and the side plate are engaged with each other. A case for an electronic device unit, which is fixed to each other depending on the combination.