JP2544508Y2 - Front cover mounting structure for electrical equipment cabinet - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a front cover provided with a fall-preventing function in a metal plate cabinet used for a key type telephone communication main unit or an electric device such as a private branch exchange. .

[0002]

2. Description of the Related Art A cabinet for an electric apparatus equipped with a large number of printed wiring boards and other electric parts, such as a main apparatus for a button-type telephone communication or a private branch exchange, has a rectangular parallelepiped shape having an opening covering almost the entire front surface. An outdoor type front cover that matches the outer contour of the box-shaped main body is attached to the box-shaped main body in a detachable manner with mounting screws while covering the opening of the box-shaped main body from the outside while covering the opening. The front cover is detached during maintenance of the equipment in the cabinet or other necessity.

[0003] Usually, the front cover is not provided with a holding portion for attachment and detachment, and a fall prevention tool is protruded from the lower end of the front cover itself in order to prevent a fall during attachment and detachment work. This is engaged with the lower end of the front surface of the main body. The front cover is formed in a thin box shape by bending the peripheral edge of the front cover into a U-shape using a metal plate, and a portion near the peripheral edge is fastened and fixed to the main body by mounting screws.

[0004]

According to the prior art in which no measures are taken to prevent the front cover from dropping, the front cover may fall upon attachment and detachment, which may damage the front cover itself or other equipment. In the case of a large size, there is a serious defect that may cause an injury to the worker. In addition, if a fall prevention tool is provided at the lower end of the front cover itself and the fall prevention tool is engaged with the lower end of the front surface of the main body to take a fall prevention measure, there is an effect on the fall prevention. The design is disadvantageous because the fall prevention tool projects below the front cover itself, and the appearance is impaired, especially when a plurality of cabinets are stacked and used.

When the front cover is attached, the screw is fastened to the front cover at the time of fastening because the fastening portion of the screw is hollow and the constituent metal plate is a single portion.
However, there is a disadvantage that it is easily deformed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a simple type cabinet in which an outdoor type front cover, which coincides with the outer periphery of the front surface of the main body, is mounted with mounting screws in a state of being in contact with the outside. It is an object of the present invention to provide a front cover mounting structure for a cabinet for an electric device, which can prevent deformation of the front cover when tightened irrespective of the structure and prevent the front cover from falling off when the front cover is attached or detached.

[0007]

According to the present invention, in order to achieve the above object, the spacer corresponding to the gap of the front cover is concealed by the front cover so as to cover the left and right ends of the front surface of the main body. Projections are provided at the upper and lower sides, and the front cover is fastened and fixed by mounting screws at the positions of these spacers, and the space provided at the lower portion is provided.
An upper hook is formed on the front cover, and a downward hook corresponding to the hook of the lower spacer is provided at a portion near the lower rear end of the front cover, so that the hook and the hook engage with each other. This prevents the front cover from falling off during attachment and detachment.

[0008]

The front cover is securely tightened without being deformed by the interposition of the spacer corresponding to the gap of the front cover, and when attaching or detaching the front cover, the front cover is attached to the hook of the spacer at the lower part. The latching piece of-is engaged and latched, thereby preventing the front cover from accidentally falling off.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. As shown in the drawing, a cabinet for an electric apparatus to which the present invention is applied is a box-shaped body 2 having a rectangular parallelepiped box-shaped body 2 having an opening 1 extending over almost the entire front surface thereof. The outdoor type front cover-3 conforming to the outer surface of the front surface of the shaped body 2 is detachably mounted with the mounting screws 4 and 4 while being in contact with the outside. , 5 and beam members 6, 6, etc. are fixedly mounted, and the front cover -3 is made of a metal plate having an outer shape coinciding with the front surface of the main body 2, and the periphery of its main body is formed. Adopt a model formed into a thin box shape by bending it backwards into a U-shape.

As a special configuration of the present invention with respect to the above-mentioned type, in the illustrated embodiment, the spacers 8, 8 having a U-shaped cross section having a dimension corresponding to the thickness of the gap of the front cover 3 are provided at the left and right ends. Under the condition of being symmetrical to the upper and lower portions, the front surface of the main body 2, that is, the mounting frame 7
Are fixed to the side members 5 and 5 at a bottom plate position of the spacers 8 and 8 by screwing or spot welding, and screw holes 9 and 9 are formed at the positions of the bottom plates. -3 is a fool hole at a position corresponding to the screw holes 9 and 9
As shown in FIG. 1, the front cover 3 and the spacers 8 and 8 are concealed at the front of the main body 2 as shown in FIG. , 8 in contact with the mounting screws 4 and 4
After penetrating through 10, 10, it is screwed into the screw holes 9, 9 and tightened.

In particular, at least the lower spacers 8 of the spacers have upward hooks 11 at their front ends.
On the other hand, the front cover 3 is engaged with the hook 11 at a portion near the lower rear end of the front cover 3 with both left and right sides bent to form a portion near the lower end of the inward edge. In order to mount the front cover-3, the hanging pieces 12 of the front cover-3 are mounted obliquely from behind the hooks 11 of the lower spacer 8 as shown in FIG. Hook under the state of hanging,
Further, the front cover 3 can be easily removed from the locked state by tilting the front cover 3 forward and lifting it.

It is desirable that the mounting screws 4, 4 should be loosely fitted with the washers 13, 13 for preventing the screws from falling off from the front ends thereof, with the mounting screws 4, 4 penetrating the fool holes 10, 10 in the front cover 3. This is convenient because it corresponds to the groove space of the spacer 8.

[0013]

[Effects of the Invention] As described above, according to the present invention,
In a state where the spacer corresponding to the thickness of the gap of the front cover is concealed by the front cover, the spacer is protruded at least at four positions, up, down, left and right on the front surface of the main body. An upper hook is formed on the spacer at the lower portion, and a lower hooking piece corresponding to the hook is provided at a portion near the lower rear end of the front cover. The front cover is prevented from falling off during the attachment and detachment by the engagement of the hook and the hooking piece, so that the front cover can be securely tightened without deforming under a remarkably simple structure. Also, when attaching or detaching the front cover, careless dropping of the front cover under the engaged state in which the hook of the front cover is hung on the hook of the spacer at the lower part. Not only it has the effect that can be reliably prevented, because captive is not exposed to the outer table portion, without the appearance is impaired and are therefore suitable when installing stacked plurality of stages.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view showing a front half of an electric device cabinet to which a front cover mounting structure of the present invention is applied.

FIG. 2 is an exploded perspective view of an electric device cabinet to which the front cover mounting structure of the present invention is applied.

FIG. 3 is a cross-sectional plan view showing a main part of the front cover mounting structure of the present invention.

FIG. 4 is a vertical sectional side view of a main part showing a process of attaching and detaching the front cover in the front cover attaching structure of the present invention.

[Explanation of symbols]

 2 Body 3 Front cover 4 Mounting screw 8 Spacer 11 Hook 12 Hook

Claims (1)

(57) [Scope of request for utility model registration] 1. A cabinet for an electric device of a type in which a front cover corresponding to the outer periphery of a front surface of a main body of a cabinet is mounted by a mounting screw in a state where the front cover is in contact with the outside. Spacers corresponding to the thickness of the gap are projected at the upper and lower portions near the left and right ends on the front surface of the main body in a state in which the spacers are concealed by the front cover.
Is fixed by tightening the mounting screws, and both spacers at the bottom are provided with upward hooks.
At the lower end of the front cover near the rear lower end, downward engaging pieces corresponding to the hooks of the spacer provided at the lower part are provided, and the engaging of the hooks and the engaging pieces causes the front cover to drop off during detachment. A front cover mounting structure for a cabinet for an electric device, wherein the front cover is mounted.