JPH0539104U - Box for storing electrical equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent the noise of the electrical equipment housing box due to the vibration of the equipment mounting plate and to prevent the equipment mounting plate from bending. [Structure] A box body 1 is provided with a frame 2 provided at an opening edge of the body 1, and a door 3 covering an opening surface of the body 1, and between a device mounting plate 5 and a back plate 4 of the body 1. Foamed resin body 10
Was attached so that the upper and lower surfaces were in contact.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a box for storing electrical equipment used in a distribution board, a distribution board, a control panel, and the like.

[0002]

[Prior Art]

 Conventionally, in a box for storing an electric device used for a distribution board or a switchboard, a device mounting plate is attached inside the box body as shown in FIGS. 3 and 4. That is, the base metal fittings 21 are welded to the four corners of the back plate 20a of the box body 20, the bolts 22 are inserted into the base metal fittings 21, and the bolts 22 are fixed to the base metal fittings 21 by the bolt supporters 23. , A nut 24 as a spacer is screwed to the bolt 22, a bolt insertion hole 25a of a device mounting plate 25 is fitted thereon, and a washer 26 and a nut 27 for tightening are screwed to the bolt 22. Finally, the device mounting plate 25 was fastened to the base metal fitting 21.

[0003]

[Problems to be solved by the device]

 When the above-mentioned conventional electrical equipment housing box is used by attaching internal equipment (not shown) such as a main switch or branch switch to the equipment mounting plate 25, the internal equipment vibrates during operation, The vibration propagates to the device mounting plate 25, and the device mounting plate 25 produces a vibration sound, and the two are superposed to generate a large noise, resulting in sound pollution and environmental protection problems. Further, the weight of the attached internal device causes the device mounting plate 25 to curve toward the back plate side of the box body, and the vibration of the device mounting plate 25 may loosen the fastening part of the internal device or the like, leading to deterioration in performance. There was also Therefore, an object of the present invention is to provide an electrical equipment storage box body that prevents noise of the equipment storage box body due to vibration of the equipment mounting plate, bending of the equipment mounting plate, and loosening of fastening parts of internal equipment and the like. is there.

[0004]

Means for Solving the Problems In order to solve the above problems, an electric device housing box of the present invention comprises a box body, a lid body for covering the opening surface of the box body, and a device mounting inside the box body. A foamed resin body having a thickness equal to the space between the equipment mounting plate and the back plate of the box body and having the entire or partial size of the equipment mounting plate. It is to be placed.

[0005]

[Action]

 Even if the internal equipment attached to the equipment mounting plate vibrates during operation, the foam resin body is attached between the equipment mounting plate and the back plate of the box body, so the equipment mounting plate is Since it does not resonate, it does not generate a loud vibration noise as a whole and prevents the deterioration of environmental hygiene due to the generation of noise. In addition, the space where the device mounting plate curves toward the back plate of the box body is eliminated by the foamed resin body, and since the device mounting plate does not vibrate, the fastening part of the internal device is prevented from loosening and lowering the performance. To be done.

[0006]

【Example】

 An embodiment of a box for housing an electric device according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view of a box for housing electrical equipment, and FIG. 2 is an enlarged cross-sectional explanatory view of a portion A which is a mounting portion of FIG. In FIG. 1, 1 is a main body of a box for housing electrical equipment, 2 is a frame, 3 is a door as a lid that covers the opening surface of the main body 1, and equipment is attached to the four corners of a back plate 4 of the main body 1. As shown in FIG. 2, the four corners of the plate 5 are welded to the four corners of the back plate 4 of the main body 1 with the bolt mounting hardware 6, and the bolts 7 are fixed to the bolt mounting metal fittings 6. The device mounting plate 5 is fitted to the bolt 7, the washer 8 and nut 9 for tightening are bolted to the bolt 7, and the device mounting plate 5 is fastened to the bolt mounting bracket 6.

Between the device mounting plate 5 and the back plate 4 of the box body 1, a foamed resin body 10 having a thickness equal to the distance and the same size as the device mounting plate 5 is arranged. The foamed resin body 10 is fixed to the surface of the equipment mounting plate 5 facing the back plate 4 of the box body 1 with an adhesive 11, and the opposite surface of the foamed resin body 10 to which the adhesive 11 is not attached is a box. It contacts the back plate 4 of the body 1. When the device mounting plate 5 is fixed to the back plate 4 by welding or the like, it can be fixed to both surfaces of the foamed resin body 10 and the back plate 4 of the box body 1 with the adhesive 11.

An internal electrical device (not shown) such as a magnet or a relay is attached to the device mounting plate 5 of the electrical device storage box configured as described above, and the electrical device storage box is placed at a predetermined location. When installed in a vehicle and operating their internal electrical equipment, those internal electrical equipment will vibrate. However, as shown in FIG. 2, the device mounting plate 5 has the foamed resin body 10 interposed between the device mounting plate 5 and the back plate 4 of the box body 1, so that the device mounting plate 5 has a vibration damping property. The mounting plate 5 itself does not resonate, and due to the cushioning effect of the foamed resin body 10, the back plate 4 of the box body 1 does not generate a large amount of noise in the box for housing electrical equipment. Prevent pollution and improve environmental hygiene. Furthermore, since the foamed resin is soft, the fastening parts such as screws for mounting the internal electric equipment can be screwed up to the back surface of the equipment mounting plate 5, and the screwed fastening parts can be pressed to reversely wrap them. It prevents the joint from loosening and degrading its performance.

The foamed resin body is formed by pouring the gel raw material before foaming into the space between the equipment mounting plate 5 and the back plate 4 of the box body 1 after assembling the whole box for housing electrical equipment. Alternatively, granular foamed resin particles packed in a closed bag can be provided in the space. Further, the foamed resin body 10 is formed to have the same size as the equipment mounting plate 5 as in the above-mentioned embodiment, and not only is it fixed to the entire surface thereof, but also limited to the mounting position of the electric equipment and the foamed resin body is partially used However, the shape and configuration of each part may be arbitrarily modified and embodied without departing from the spirit of the present invention.

In addition, although the above-described embodiment describes the box for storing electrical equipment such as a distribution board, a switchboard, and a control panel, the box for storing equipment is not limited to the box for storing electrical equipment. It can also be applied to a general machine equipment housing box, and it is more effective if the equipment mounting plate is formed of a vibration-damping steel plate in which both sides of a resin layer are pressed against each other.

[0011]

[Effect of the device]

 As described above, the electrical equipment housing box according to the present invention has the foamed resin body interposed between the equipment mounting plate and the back plate of the housing body. When the internal equipment is operated by installing the equipment in a predetermined place, even if those internal equipment generate vibration noise, the equipment mounting plate that comes into contact with the foamed resin body resonates due to its vibration damping property. Therefore, the entire box for housing electrical equipment does not generate a large amount of noise, and the pollution of sound is prevented, which is favorable for environmental hygiene. In addition, since the space where the device mounting plate curves toward the back plate side of the box body is eliminated by the foamed resin body and the device mounting plate does not bend, the device mounting plate does not vibrate. It is possible to achieve an excellent effect in practical use, such as preventing the fastening portion from loosening and deteriorating its performance.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a box for housing an electric device according to the present invention.

FIG. 2 is an enlarged cross-sectional explanatory view of a portion A in FIG.

FIG. 3 is a perspective view of an example of a conventional electrical equipment housing box.

FIG. 4 is an enlarged perspective view of a B part of FIG.

[Explanation of symbols]

1 ... Box body, 2 ... Frame, 3 ... Door, 4 ... Box back plate, 5 ... Equipment mounting plate, 6 ... Bolt mounting bracket, 7 ... Bolt, 8 ... Washer , 9 ... nuts,
10 ・ ・ Foam resin body, 11 ・ ・ Adhesive.

Claims (1)

[Scope of utility model registration request] 1. A box main body, a lid that covers the opening surface of the box main body, and a device mounting plate provided inside the box main body, and the gap between the device mounting plate and the back plate of the box main body. And a foamed resin body having a thickness equal to, and having the entire surface or a partial size of a device mounting plate.