JPH0259640B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Technical Field of the Invention The present invention relates to a plug-in unit accommodating casing used for communication equipment, etc., and particularly to an assembly that can be assembled with a minimum number of assembly screws and a reduction in the number of plug-in unit accommodating stages. The present invention relates to a housing structure that can quickly respond to any number of requests.

(b) Conventional technology and problems Housing housings for plug-in units such as communication equipment, etc.
Conventionally, each of the components that make up the casing was fabricated by sheet metal processing, but these components were manufactured by attaching separate plug-in unit guide rails to the intermediate shelf, bottom plate, and top plate, and attaching these plates to both side plates with screws. At the same time, a backboard made of a printed circuit board and equipped with a connector was attached to the back of the case using screws. Therefore, a large number of screw parts are required for assembly, and the assembly operation requires a large amount of time and man-hours.

In addition, when adding equipment, shelves and backboards are added according to the number of plug-in units, which results in the need to rebuild the entire housing, which is uneconomical. The point was hot.

(c) Purpose of the Invention The present invention has been made in view of the above-mentioned conventional problems, and it is possible to improve the plug-in unit by minimizing the number of screws required for assembling the casing and by standardizing the components. The purpose of the present invention is to provide a casing structure that can quickly adjust the number of storage stages to any desired request.

(d) Structure of the Invention The above object is to provide a bottom plate each having the same area for accommodating a plurality of plug-in units;
It is equipped with a shelf board, a top board, and a pair of side boards, the bottom board has a plurality of downwardly bent protrusions at both ends, and the shelf board has guides on its upper and lower surfaces at intervals where plug-in units are inserted. Rails are provided in the front-rear direction, and the rear edge has housing-side connector end receiving holes on the upper and lower surfaces at each guide rail interval, and protrusions are provided on both ends at the same position as the bent protrusions on the bottom plate. The top plate has both side edges bent downward and a bent part with a plurality of screw holes, and a pair of side plates have a bent part of the bottom plate and a shelf horizontally in the front and back direction. There are a plurality of first holes into which the protrusions of the plate can be inserted together, and above the first holes, protrusions of the shelf board are provided at respective positions at a height where plug-in units can be inserted corresponding to the required number of shelf boards. A plurality of second holes to be inserted are provided, a screw insertion hole is provided above the uppermost second hole at a position corresponding to a screw hole in the top plate, and a screw insertion hole is provided at a position corresponding to a screw hole in a pair of side plates. The bent protrusion of the bottom plate and the protrusion of one shelf board are inserted into the holes, and the corresponding protrusion of the shelf board is inserted into the respective second holes, and the connector ends at the rear edges of the upper and lower shelf boards are received. Both ends of the connectors are inserted into the holes, the bottom plate is pushed down so that the inside of the bent protrusion comes into contact with the side plate surface, and the bent part of the top plate is inserted between the pair of side plates. This is achieved by a plug-in unit housing housing characterized in that a screw from a screw insertion hole in a side plate is inserted into the screw hole.

(e) Embodiments of the Invention Hereinafter, the plug-in unit housing case of the present invention will be described in detail by way of embodiments with reference to the drawings.

FIG. 1 is a perspective view of one embodiment of the present invention in an assembled state, shown partially separated. In the figure, the front side of the housing opening indicated by the arrow is called the front, the back side is called the back, the front and back directions are called the front-rear direction, the left hand in the figure is called the left, and the right hand is called the right.

Reference numeral 3 indicates shelf boards, which are indicated by A, B, and C, all of which have the same shape. This shelf board 3 has guide rails 31 for accommodating and guiding the plug-in unit 7 in symmetrical positions on the upper and lower surfaces in the longitudinal direction, and a guide rail 31 on the upper and lower surfaces of the trailing edge on the back side at a position corresponding to the position of the guide rails 31. A connector end receiving hole that receives both ends of the housing side connector 6 that is to be plug-in connected to the connector (not shown because it is not visible in the drawing) provided on the back side of the plug-in unit 7, and holds the connector 6. 33
(Only the top side is shown in the drawing, and the bottom side is not visible) and two rectangular-shaped protrusions 32 on both left and right sides in the front and back directions are integrally formed by synthetic resin molding. There is. Only the left side is shown, but the right side is similar.

2 is a bottom plate, and downwardly bent protrusions 21 are formed at two locations on the left and right edges at the same positions as the side protrusions 32 of the shelf board 3.

Reference numeral 4 denotes a top plate, the left and right edges of which are bent downward to form bent portions, and two screw holes 41 are formed in each of the bent portions. 5 is a set screw.

Reference numeral 1 denotes a pair of side plates, the lower edges of which are bent outward in an L-shape when viewed from the main surface, forming horizontal legs for installation, and provided with screw insertion holes 11. It is being A first hole 12 is formed in a rectangular shape on the vertical main surface of the side plate horizontally in the front-rear direction, and at the lowest stage in which the side protrusion 32 of the shelf board 3 and the bent protrusion 21 of the bottom plate 2 can be inserted and engaged. In this embodiment, the side protrusions 32 of the shelf board 3 are installed at two locations, and at each position above the first hole 12 at a height where the plug-in unit can be inserted, and in this embodiment, two locations in the middle and above.
Two rectangular second holes 13 into which the screws can be inserted and engaged are formed at two positions in the front and rear directions, and further, screw insertion holes 14 are formed in the upper end surface corresponding to the screw holes 41 of the top plate 4.

With the above configuration, assembling will be described below. The protrusion 21 of the bottom plate 2 is inserted into the first hole 12 of the side plate 1 and pushed down, and the inner surface of the protrusion 21 is abutted and engaged with the outer surface of the side plate 1. At this time, the upper sides of both side plates 1, 1 or either one of the side plates 1 are tilted outward, and the side protrusion 32 of the shelf board A3 is inserted into the first hole 12, and the both side plates 1 are brought back so as not to be parallel to each other. In this process, a predetermined number of the lower ends of the housing side connectors 6 are inserted into the connector end receiving holes 33 at the rear edge of the shelf.

Next, insert the upper end of the connector 6 on the housing side into the connector end receiving hole 33 on the lower side of the rear edge of the intermediate shelf board B3, and insert and engage the side protrusion 32 into the second hole 13 of the side plate 1. let Similarly, intermediate shelf board B
By inserting a predetermined number of housing side connectors 6 between the upper shelf board C3 and the upper shelf board C3, and inserting and engaging the side protrusions 32 of the upper shelf board C3 into the second holes 13, both side boards 1, 1 are brought into a parallel state. Become. Both sides of the top plate 4 are inserted between the inner surfaces of the side plates 1, 1, and the setscrews 5 are inserted into the screw insertion holes 14 and screwed into the screw holes 41 to be connected.

As both protrusions 21 of the bottom plate 2 are pushed down, both end surfaces of the bottom plate 2 abut the inner surfaces of the side plates 1, and the inner surfaces of the protrusions 21 abut the outer surfaces of the side plates 1, as shown in FIG. In this way, both side plates 1, 1 are locked. Further, by placing the shelf board A3 on the upper surface of the bottom plate 2 and inserting and engaging the side protrusion 32 into the first hole, the bottom plate 2 becomes unable to move upward. In other words, the bottom plate 2 is locked by the shelf plate A3 and cannot be removed.

Both ends of the housing side connector 6 are connected to shelf boards A3 and B.
3 and C3 are inserted into the connector end receiving holes 33 of connectors 3 and C3, and the connectors are held at predetermined positions relative to the guide rail 31, respectively.

The side plates 1, the bottom plate 2, and the top plate 4 are made of metal plates such as iron plates, and are plated to prevent rust.

The case assembled in the above manner has side plate 1
As a general rule, it can be assembled without using screws at any point other than where the top plate 4 and the top plate 4 are connected. Therefore, it is easy to disassemble the assembled housing.

By inserting the plug-in unit 7 with a built-in predetermined circuit function in the direction of the arrow along the upper, lower, left, and right guide rails 31, the connector on the back of the plug-in unit 7 is plug-in connected to the housing side connector 6. Can be done.

FIG. 2 shows, in front view, various aspects of the casing according to the present invention. That is, Fig. a shows the upper and lower two-stage mounting type shown in Fig. 1, Fig. b shows the one-stage mounting type, and Fig. c shows the upper and lower three-stage mounting type.

In each figure, the side plate 2, shelf plate 3, and top plate 4 are all the same and common, and only the height of the side plate 1 differs. That is, the figure b is indicated by 1', and the figure c is indicated by 1''.

In this way, side plates and shelf plates corresponding to the number of stages in which the plug-in units 7 are arranged and mounted may be prepared and assembled by fitting them together. For example, in the case of a 3-tier type, 4
It is only necessary to provide two shelf boards and the necessary connectors on the housing side. For this reason, when converting an already used two-tiered type to a three-tiered type, one additional shelf board, four connectors on the housing side, and a pair of replacement side plates 1'' are required. It is easy to prepare, disassemble and assemble the casing on site.

Although it is possible to have four or more stages, it is preferable to use means to prevent the side plates from bending outward, such as reinforcing and connecting means to prevent deformation.

(f) Effects of the Invention As is clear from the above explanation, the plug-in unit housing casing of the present invention minimizes the number of screws used compared to the conventional casing structure, thereby improving assembly work efficiency. This improves the efficiency of the process, making it possible to significantly reduce the amount of time required.

The bottom plate, shelf plate, and top plate are common to all, so they can be standardized and prepared, and the side plates can be prepared in an appropriate number of semi-standard items, or they can be manufactured on request. In this case as well, since the shape is simple, it is possible to respond quickly. By making the positions of the side protrusions and the like of the shelf boards symmetrical in the front-rear direction, it is possible to make the left and right side boards the same shape, and one type of side boards can be made into a set of two. In this way, it is possible to meet requests for an arbitrary number of mounting stages.

[Brief explanation of drawings]

FIG. 1 is a perspective view of one embodiment of the plug-in unit accommodating casing of the present invention in an assembled state, partially separated, and FIG. 2 is a front view showing various aspects of the casing of the present invention. In the figure, 1, 1' and 1' are side plates, 2 is a bottom plate, and 3
is a shelf board, 4 is a top plate, 5 is a set screw, 6 is a housing side connector, 7 is a plug-in unit, 11 is a screw insertion hole, 12 is a first hole, 13 is a second hole, 14 is a screw insertion hole hole, 21 is a protrusion, 31 is a guide rail,
32 is a protrusion, 33 is a connector end receiving hole, 4
1 is a screw hole.

Claims (1)

[Claims] 1 In order to accommodate a plurality of plug-in units, a bottom plate, a shelf plate, a top plate each having the same area, and a pair of side plates are provided, and the bottom plate has a plurality of downwardly bent protrusions at both ends, The shelf board is provided with guide rails in the front and back direction on its upper and lower surfaces at intervals at which the plug-in units are inserted, and has housing-side connector end receiving holes on the upper and lower surfaces at the rear edge end at each guide rail interval. , and protrusions are provided at both ends at the same positions as the bent protrusions of the bottom plate, and the top plate has bent parts with both side edges bent downward and a plurality of screw holes, is horizontal in the front-rear direction, and at the bottom there are a plurality of first holes into which both the bent protrusions of the bottom plate and the protrusions of the shelf can be inserted, and above them there are a plurality of first holes corresponding to the required number of shelves. A plurality of second holes into which the protrusions of the shelf board are inserted are provided at each position at a height where the plug-in unit can be inserted,
Above the second hole at the top, there is a screw insertion hole at a position corresponding to the screw hole in the top plate, and in the first hole in the pair of side plates, there is a bent protrusion on the bottom plate and a protrusion on the pair of shelf plates. are inserted, the protrusions of the corresponding shelf boards are inserted into the respective second holes, and both ends of the connectors are inserted between the connector end receiving holes at the trailing edges of the upper and lower shelf boards, respectively. The bottom plate is pushed down so that the inside of the bent protrusion comes into contact with the side plate surface, the bent part of the top plate is inserted between the pair of side plates, and the screws from the screw insertion holes in the side plate are inserted into the screw holes. A plug-in unit accommodating case characterized by being configured as follows.