JPH0744350B2 - Modem mounting shelf structure - Google Patents

Description

DETAILED DESCRIPTION [Overview] A structure for mounting modems housed in a cabinet of a communication device, and particularly a simple structure for mounting a plurality of modems of different sizes in a cabinet and easy mounting and dismounting. With regard to the modem mounting shelf that can be used for various purposes, the purpose is to provide a mounting structure for multiple modems of different sizes that does not require any hassle for mounting and dismounting. It is a structure for mounting a modem to be housed in a cabinet, and corresponds to the position of the rubber feet of the modem, the height of which is set so that the top surfaces of the housings of the respective modems are flush with each other. A plurality of guide metal fittings with guide surfaces extending in the depth direction on both sides are individually fixed on the shelf board corresponding to the predetermined position of each modem, and the modem is mounted on this. After that, the top surface of each modem is regulated by a common holding metal fitting having a horizontal holding portion.

[Industrial application field]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for modems accommodated in a cabinet of communication equipment. In particular, the present invention relates to a modem mounting shelf that has a simple structure and can be easily mounted and dismounted when housing a plurality of modems of different sizes in a cabinet.

[Conventional technology]

As shown in FIG. 4, in recent years, a plurality of modems 1 having different functions corresponding to signal types have been used in terminal devices of communication systems.
There is an increasing number of cases where 2 are incorporated and are mounted on the same shelf board 4 and housed in the cabinet 10. Usually, these modems have different sizes from each other, so that they need to be individually positioned and fixed when they are mounted on a shelf.

FIG. 5 shows an example of a conventional mounting structure for fixing two modems of different sizes, especially heights, on the same shelf.

A flat plate having rising portions 5a at two edges which are orthogonal to each other, as shown in FIG. 6, at the positions on the shelf plate 4 corresponding to the positions of the rubber feet 3 provided at the four corners of the bottom surface of each modem 1, 2. The metal-shaped receiving metal fittings 5 are fixed by appropriate means, and arranged so that the four corners are restricted by the rising portions 5a of each metal fitting (see FIG. 7). And each modem 1, on this
Place the 2 rubber feet 3 and restrict them so that they do not shift back and forth and left and right. Next, the metal fittings 6 and 7 prepared according to the heights of the modems 1 and 2 are hung on the body of the modem casing from above via the rubber sheet 8 and the tip thereof is attached to the shelf board 4 It is fastened at appropriate points to prevent upward movement.

[Problems to be Solved by the Invention]

In the structure of such a conventional mounting shelf, it is necessary to first arrange and fix the receiving metal fittings at predetermined positions, and it is necessary to fasten the metal fittings for each modem, which is troublesome. There was a flaw.

Furthermore, when this modem is stored in a cabinet and taken out for maintenance, etc., it is difficult to pull it out smoothly even if the pressing metal fitting is removed because the rising part of the receiving metal fitting is in the way. . Even if it can be pulled out, it is extremely difficult to put the rubber feet of the modem correctly in the position of the bracket when returning the modem after maintenance to the cabinet again. Was needed.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems in the prior art and provide a mounting structure for a plurality of modems of different sizes, which does not require mounting and dismounting.

[Means for Solving the Problems]

The purpose is to mount a plurality of modems with different heights on one shelf board and to mount the modems in a cabinet. Corresponding to the predetermined position of each modem with multiple guide metal fittings that have guide surfaces extending in the depth direction on both sides corresponding to the position of the rubber feet of the modem, whose heights are set to be flush Then, the modem is mounted individually on the shelf board, the modem is mounted on the shelf, and then the top surface of each modem is regulated by a common pressing metal having a horizontal pressing part. Achieved by structure.

[Action]

Since the guide metal fitting fixed to a predetermined position is provided with a guide surface whose height is set according to the installed modem, the top surfaces of the respective modems are aligned at a constant height. Therefore, the top surface can be pressed by the common pressing metal fitting. The modem can be easily pulled out to the front along the guide surface extending in the depth direction by removing the pressing bracket from the shelf plate. Further, the modem after maintenance can be similarly pushed into the shelf along the guide surface and returned to a predetermined position.

As a result, it is possible to reduce the work time for installing / removing the modem.

Hereinafter, the present invention will be described in more detail with reference to the preferred embodiments shown in the drawings.

〔Example〕

1 to 3 show an embodiment of the modem mounting shelf structure of the present invention.

Modems 11 and 12, which have different dimensions including height,
Similar to the above-mentioned conventional example, it is configured to be housed in a cabinet (not shown) while being placed on the shelf plate 13 which is blown through in the front-rear direction. Here, both side edges of the shelf plate 13 are bent upward to form a side plate 13a, which is fixed to the cabinet by a screw through a hole 13b provided on the front surface thereof so that the shelf plate 13 is maintained in a horizontal state at a predetermined position. Has become.

Guide fittings 14 and 15 are fixed to a predetermined position on the shelf 13 on which each modem is to be placed by an appropriate means such as welding. As shown in FIG. 3, both side edges and rear edges of the guide fittings 14 and 15 are bent upward so that the stopper 1
6 and 17 are configured to regulate the position of the rubber feet 18 of the modem when it is mounted. The guide fittings 14 and 15 are provided with horizontal guide surfaces 19 extending in the depth direction along the stoppers 16 at the side edges on both side regions thereof.

As shown in FIG. 2, the height from the surface of the shelf plate 13 to the guide surface 19 is the same when the modem is mounted on the shelf, and the height of mounting the modem is the same. The surfaces are set to form the same horizontal plane.

Incidentally, in the figure, the height of the guide surface 19 of the guide fitting 14 is substantially zero, and the guide surface 19 of the guide fitting 15 is stepped by sheet metal working so as to have a height of h. There is. The heights of the top surfaces of the modems 11 and 12 placed on these guide fittings are the same due to this difference h.

In this way, for the modems 11 and 12 placed on the guide surfaces 19 of the guide fittings 14 and 15 and positioned so that the rubber feet 18 on the rear side of the modem come into contact with the stopper 17, the shelf board 13 is next.
A common holding metal fitting 20 having a horizontal portion 20a crossing in the width direction is applied via a rubber sheet 21, and each modem 11, 12
The top surface of the casing is regulated by the horizontal portion 20a. Then, through the holes 20b provided in both end regions of the holding metal fitting 20, the bracket 22 on the shelf board side is screwed and fixed from the front side.

As a result, the modems 11 and 12 have stoppers for the guide fittings 14 and 15.
The positions of the rubber feet 18 at the four corners of the bottom surface of the modem are regulated by 16, 17 to prevent the left and right as well as the rearward displacement. Then, the upward movement of the front row is regulated by the pressure applied through the rubber sheet 21 by the press fitting 20, and the positioning and fixing is stably performed on the shelf board.

The shelf 13 to which the modem is attached in this manner is housed in a predetermined space in the cabinet as described above, and is fixed by being screwed from the front surface.

In order to take out any modem 11 for maintenance or the like in this state, first insert the driver through the space extending in the depth direction on both side areas of the shelf board 13 and fix the holding metal fitting 20 to the shelf board 13. Loosen the screws that are present, shift the holding metal fitting 20 upward, and temporarily fix it. This releases the restriction on the forward movement of the modem, so that the desired modem 11 can be pulled out along the guide surface 19 of the guide fitting 14 toward the front.
Then, when the modem 11 for which maintenance has been completed is placed on the guide surface 19 again and is pushed in as far as it is, the position of the rubber foot 18 on the rear side of the modem is regulated by the stopper 17 and positioned at a predetermined position. Therefore, the pressing metal fitting 20 is shifted downward, and the modem is pressed and fixed with screws, and the work is completed.

〔The invention's effect〕

Thus, according to the present invention, since the modem is placed on the guide fitting having the guide surface and positioned on the shelf board,
There is no protrusion that obstructs this when it is pulled out, and when it is pushed in, it naturally stops at a predetermined position by the action of the stopper. Therefore, replacement and maintenance of the modem can be performed with the shelf board still installed in the cabinet, and the number of work steps can be reduced.

Also, since a plurality of modems of different heights are held by a common press fitting to restrict upward movement, it is not necessary to fix each modem with a separate press fitting, and the work man-hours can be reduced as well. Becomes

[Brief description of drawings]

FIG. 1 is a perspective view showing the structure of a modem mounting shelf of the present invention, FIG. 2 is a front view of the same, and FIG. 3 is a perspective view showing the shape of a guide fitting used for this, and FIGS. FIG. 7 is a view showing the structure of a conventional modem mounting shelf. 11,12 …… Modem, 13 …… Shelves, 14,15 …… Guide fittings,
16,17 …… Stopper, 18 …… Rubber foot, 19 …… Guide surface, 2
0 …… Pressing bracket, 21 …… Rubber sheet.

Claims (1)

[Claims] 1. A modem mounting rack structure for mounting a plurality of modems (11, 12) having different heights on one shelf plate (13) and accommodating them in a cabinet, each of which is mounted. A guide surface (19) extending in the depth direction corresponding to the position of the rubber feet (18) of the modem is set such that the top surfaces of the modem (11, 12) casings are flush with each other. ) Are installed on both sides of each modem (11,1).
After fixing the shelves (13) individually corresponding to the predetermined positions of 2) and mounting the modems (11, 12) on them, a common holding metal fitting (20) having a horizontal holding portion (20a) The modem mounting structure is characterized in that the top surface of each modem (11, 12) is regulated by.