JPH0244540Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention utilizes reinforcing ribs on the casing in which the printed circuit board is mounted, instead of providing a guide groove that supports the printed circuit board in a slidable manner. The present invention relates to a structure of a casing for housing a printed circuit board, etc., which simplifies the configuration and manufacturing process, and reduces costs by supporting the casing.

[Conventional technology and its problems]

Conventionally, when installing plate-shaped parts such as printed circuit boards in various electrical and electronic devices, etc., a protruding pedestal protruding from the bottom base 1 is used, for example, as shown in Fig. 4. Conventionally, a printed circuit board 3 or the like is positioned and placed on the board 2 and then fixed using a fixing means 4 such as a bolt. Reference numeral 5 denotes a cover fixed on the base 1, and a plurality of reinforcing ribs 5a extending in the vertical direction are integrally formed on the inner wall of the cover 5 at predetermined intervals.

In this case, the method of fixing the printed circuit board is complicated, and in addition to problems such as an increase in the number of parts and an increase in the assembly process, it is difficult to remove the printed circuit board from inside the case during maintenance etc. Furthermore, there was an inconvenience in that it was necessary to remove the fixing means 4 after removing peripheral parts such as wiring or operating parts fixed to the cover 5 and the printed circuit board.

From this point of view, casings as shown in FIGS. 5a and 5b have also been developed. That is, Fig. 5 a, b
The housing has a pair of opposing parallel guide protrusions 6 integrally molded along the entire length on opposing inner wall surfaces of the cover 5. A guide groove 7 is formed between these two guide protrusions. In the case of this type of casing, with the front or rear part of the cover open, both ends of the printed circuit board, etc. enter the guide groove 7 through the opening, and then slide it inside. , a printed circuit board is installed at a predetermined position inside the housing.

However, in this case, since a narrow and long guide groove 7 is formed on the inner wall of the cover of the case, the cost of molding it by molding or die casting is extremely expensive.

[Means for Solving the Problems] The present invention has been made in view of the above, and it integrates a printed circuit board and accessory parts fixed to the printed circuit board to facilitate attachment and detachment, and also simplifies the structure and reduces the size. In order to reduce costs, it has a substantially plate-shaped bottom base and a box-shaped cover that is joined to cover the top of the bottom base and is open at the bottom, and is a board such as a printed circuit board with attached parts integrated inside. In the housing in which the shaped body can be slidably attached and detached, one or more ribs extending in the vertical direction are formed on a pair of opposing inner wall surfaces of the cover, and the lower end of the rib and the bottom base are connected to each other. The purpose of the present invention is to provide a structure of a casing for storing a printed circuit board, etc., in which a sliding space for slidably supporting the side edge of the printed circuit board, etc. is formed between them.

〔Example〕

Hereinafter, the structure of the casing for housing the printed circuit board and the like of the present invention will be explained in detail. 1, 2a and 2b, and 3 are a perspective view, an explanatory view of the structure of a joint part, and an exploded cross-sectional view showing the structure of one embodiment of the present invention. , a cover 12 with an open front or rear surface, and a cover 12
It is composed of a plurality of reinforcing ribs 13 integrally protruding from the inner wall surface of the holder. The ribs 13 are protrusions extending vertically with a predetermined length, and are arranged in parallel at predetermined intervals in the depth direction. The length of the rib 13 is set so that a predetermined sliding space 15 is formed between the pedestal portion 14 formed on the upper surface of the base and the lower end surface of the rib. The dimensions of this sliding space 15 are determined to such an extent that both ends of the printed circuit board 3 can be supported in a removable manner. Although various structures are possible for the joint between the base 11 and the cover 12, FIGS. 2a and 2b each show one example. That is, in FIG. 2a, the pedestals 14 are protruded from both side ends of the base 11 at positions closer to the inside by a predetermined length (for example, the thickness t of the side wall of the cover 12), and the space outside the pedestals 14 is base 1 on top
After the lower end surface of the side wall 1 is seated, it is fixed with screws 17 or the like. And the pedestal part 14
A sliding space 15 is formed between the upper surface and the lower surface of the rib 13. The pedestal portions 14 may be formed continuously on the base, or may be disposed intermittently at predetermined intervals. In any case,
It must be formed in a straight line. Further, in FIG. 2b, a pedestal part 18 is formed on the inner surface of the side wall of the cover 12, and a sliding space 15 is formed between this pedestal part 18 and the lower surface of the rib 13.

FIG. 3 is an exploded perspective view of the embodiment of FIG. 1a.

In the above configuration, the cover 1 is placed on the base 11.
When mounting a printed circuit board etc. 3 into the housing 10 through the opening 19 formed in the above or rear part when 2 are joined, the wiring etc. fixed to the printed circuit board should be carved in advance on the opposite side of the opening. After inserting the printed circuit board 3 into the component mounting opening, insert the both ends of the printed circuit board 3 into the sliding space 15 formed between each rib 13 and the pedestals 14 and 18, and push it further in. . Even when it is desired to take out only the printed circuit board during maintenance or the like, by opening the opening 19, the printed circuit board and its attached parts can be taken out.

[Effect of idea]

As described above, the structure of the casing for storing printed circuit boards, etc. of the present invention includes a substantially plate-shaped bottom base and a box-shaped cover that is joined to cover the top of the bottom base and is open at the bottom. In a housing in which a plate-like body such as a printed circuit board with attached parts integrated therein can be attached and detached in a sliding manner,
One or more ribs extending in the vertical direction are formed on a pair of opposing inner wall surfaces of the cover, and between the lower end of the rib and the bottom base, the side edge of the printed circuit board, etc. can be slid. Since a sliding space for flexible support is formed, the printed circuit board and the attached parts fixed to the printed circuit board can be easily attached and detached as a single unit, and the structure can be simplified to reduce mold costs. can.

[Brief explanation of the drawing]

Figures 1, 2a, b, and 3 are perspective views showing the configuration of an embodiment of the present invention, an explanatory view of the structure of the joint, and an exploded cross-sectional view, and Figures 4 and 5 a, b are FIG. 2 is an explanatory diagram of the configuration of a conventional example. Explanation of symbols, 10... Housing, 11... Base,
12...Cover, 13...Reinforcing rib, 14...
Pedestal section, 15...Slide space, 17...
Screw, 18...Pedestal part.

Claims (1)

[Claims for Utility Model Registration] It has a substantially plate-shaped bottom base and a box-shaped cover that is joined to cover the top of the bottom base and is open at the bottom, into which a plate-shaped object such as a printed circuit board can be slid. In the casing that can be attached and detached in the same manner, one or more ribs extending in the vertical direction are formed on a pair of opposing inner wall surfaces of the cover, and between the lower end of the rib and the bottom base. A structure of a casing for storing a printed circuit board, etc., characterized in that a sliding space is formed to slidably support the side edge of the printed circuit board, etc.