JPH0529203U - Box for storing electrical equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the noise of the electrical equipment housing box due to the vibration of the equipment mounting plate and to prevent loosening of the fastening parts of the internal equipment. [Constitution] 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 a commercially available control is provided at four corners of a back plate 1a of the body 1. Each of the four corners of the equipment mounting plate 4 made of a shaken steel plate was bolted.

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 body for storing electrical equipment used for a distribution board, a distribution board, etc., an equipment 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 serving as a spacer is screwed to 22 and 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 to mount the device. The 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 operates and vibrates. And the vibration propagates to the device mounting plate 25, and the device mounting plate 25 also generates a vibrating sound, and both are superposed to make a large noise, resulting in sound pollution and environmental hygiene. Furthermore, the vibration of the device mounting plate 25 may loosen the fastening parts of the internal devices and the like, leading to a decrease in performance. Therefore, an object of the present invention is to provide a box for storing electrical equipment that prevents noise of the box for storing equipment due to vibration of the equipment mounting plate and loosening of fastening parts of internal equipment and the like.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a box for storing electric equipment of the present invention comprises a box body, a lid for covering the opening surface of the box body, and a device mounting plate provided in the box body. Is formed of a damping steel plate.

[0005]

[Action]

 Even if the internal equipment attached to the equipment mounting plate is activated to generate vibration noise, the equipment mounting plate is made of a vibration-damping steel plate, so the equipment mounting plate does not resonate due to its vibration damping property. It does not make a large vibration noise as a whole and prevents noise generation and improves environmental hygiene. Further, since the device mounting plate does not vibrate, it is possible to prevent the fastening portion of the internal device from loosening and deteriorating the performance.

[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 of FIG. In FIG. 1, reference numeral 1 is a main body of a box for housing electrical equipment, 2 is a frame, 3 is a door as a lid for covering the opening surface of the main body 1, and the back plate 1 a of the main body 1 has four corners which are commercially available. The four corners of the device mounting plate 4 made of vibration-damping steel plate are bolted to each other as shown in FIG.

That is, the bolt mounting brackets 5 are welded to the four corners of the back plate 1a of the main body 1, the bolts 6 are fixed to the bolt mounting brackets 5, and the antivibration rubber 7 is used as a spacer and a cushioning material on the bolts 6. Then, the device mounting plate 4 is fitted onto it, a washer 8 for tightening and a nut 9 are screwed onto the bolt 6, and the device mounting plate 4 is fastened to the bolt mounting bracket 5. A nut may be used as a spacer in place of the vibration-proof rubber 7, and the device mounting plate 4 may be crimped to the bolt mounting member 5 instead of being bolted as described above.

An internal electrical device (not shown) such as a magnet or a relay is attached to the device mounting plate 4 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 generate vibrating noise. However, as shown in FIG. 2, the device mounting plate 4 is formed of a damping steel plate in which the steel plates 4b, 4b are pressure-welded to both sides of the resin layer 4a. Since it does not resonate and the cushioning effect of the anti-vibration rubber does not cause a large amount of noise in the entire electrical equipment housing box, it prevents sound pollution and improves environmental hygiene. Further, since the device mounting plate 4 does not vibrate, it is possible to prevent the fastening parts such as screws of the internal electric device from loosening and deteriorating the performance thereof.

The damping steel plate is a composite material of a steel plate and a resin, and various products are commercially available. In this embodiment, the damping steel plate C1 or B2 (trade name) manufactured by Sumitomo Metal Co., Ltd. ) Is used, but other damping steel plates may be used as long as good damping properties are obtained.

In addition, although the above-mentioned embodiment describes a 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 device housing box.

[0011]

[Effect of the device]

 As described above, the box for storing electrical equipment according to the present invention is formed by damping steel plate as the equipment mounting plate installed inside the body of the box. When installed in a location and operating those internal devices, even if those internal devices generate vibration noise, the device mounting plate that is made of vibration-damping steel plates with steel plates pressed against both sides of the resin layer Since it does not resonate due to its vibration damping property, therefore, the entire electrical equipment housing box does not generate a large amount of noise, and sound pollution is prevented and environmentally friendly results are obtained. Further, since the device mounting plate does not vibrate, it is possible to prevent the deterioration of the performance due to the loosening of the fastening parts such as the screws of the internal device, which is an excellent effect in practical use.

[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, 1a ... Back plate, 2 ... Frame, 3 ...
Door, 4 ... Equipment mounting plate, 4a ... Resin layer, 4b ...
Steel plate, 5 ・ ・ Bolt mounting bracket, 6 ・ ・ Bolt, 7 ・
・ Anti-vibration rubber, 8 ・ ・ washers, 9 ・ ・ nuts.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location 7028-5G H02B 1/10 Z

Claims (1)

[Scope of utility model registration request] 1. An electric device comprising a box body, a lid for covering an opening surface of the box body, and a device mounting plate provided inside the box body, the device mounting plate being formed of a damping steel plate. Box for storage.