JP2010087065A - Cabinet for storing electrical component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cabinet for storing an electrical component in which component installation and wiring work can be performed from a back surface even in the cabinet of a monocoque structure. <P>SOLUTION: In the cabinet for electrical and electronic components of a monocoque structure, a back surface plate 4 covering the back surface opening 40 of the cabinet is covered using a main back surface plate part 41 for connecting and uniting right and left side face plates 2 and 3 and a plurality of sub back surface plate parts 42 for covering a back surface opening part not covered by the main back surface plate part 41. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electrical equipment storage cabinet used for a cubicle or the like equipped with a transformer, a phase advance capacitor, a high voltage load switch or the like.

  There are many large-sized devices such as transformers, phase-advancing capacitors, and high-voltage load switches that are mounted on the cubicle, and a large-sized cabinet that uses a frame structure is adopted for housing these. Such a cabinet for storing electrical equipment is usually structured so that doors are provided on the back and sides in addition to the front door in order to check each equipment. Thereby, the inspection of the apparatus installed in the side and the back can be performed easily. Moreover, at the time of equipment installation or wiring work, the work can be easily performed from the back or side (see, for example, Patent Document 1).

However, in a cubicle with a small capacity, a mounted transformer, a phase advance capacitor, and the like are small and can be stored in a relatively small cabinet. Adopting a frame structure for such an electrical equipment storage cabinet has the problem that it is impossible to reduce the size by the amount of the frame structure and the manufacturing cost increases.
Therefore, as a small-capacity cubicle electrical equipment storage cabinet, the so-called monocoque structure electrical equipment storage is formed by joining the side plate, back plate, bottom plate and roof plate to form a cabinet without adopting a frame structure. Cabinets may be used.

However, small cubicles can be inspected from the front door for all of the devices housed inside, and there is no need to provide doors on the side or back. In addition, in order to provide a door or the like in a monocoque electric equipment storage cabinet, it is necessary to attach a door frame separately, which increases the cost. For this reason, doors are not provided on the back and side surfaces of a small cubicle, and there is a problem that it is difficult to work when wiring work is performed on equipment or the like installed on the back.
Therefore, even a monocoque cabinet is expected to be able to install equipment and perform wiring work from the back of the cabinet.
JP 2000-332441 A

  The present invention has been made in order to meet the above-described needs, and provides an electrical equipment storage cabinet capable of installing equipment and wiring work from the back even if it is a monocoque cabinet.

  An electrical equipment storage cabinet according to the present invention is an electrical equipment cabinet having a monocoque structure, and includes a main back plate portion integrally connecting a left and right side plates to a back plate covering a back opening of the cabinet, and the main back plate portion. A basic invention is characterized in that the remaining back opening portion is covered with a plurality of sub-back plate portions.

  In the present invention, a plurality of sub-back plate portions covering the back opening portions left by the main back plate portion may be formed as vertically divided left and right. Further, one of the plurality of sub-back plate portions covering the back opening portion left by the main back plate portion is formed in the fitting type sub-back plate portion that closes the work window hole formed in the other sub-back plate portion. It may be a thing.

The electrical equipment storage cabinet of the present invention described above is of a monocoque structure, but the back plate that covers the back opening of the cabinet is left by the main back plate portion that integrally connects the left and right side plates and the main back plate portion. It is possible to install and wire the equipment from the back opening left by the main back plate in the assembly process of the cabinet. In particular, the workability when wiring is performed on a device located on the back side is improved.
In addition, since the left and right side plates are connected and integrated by the main back plate portion, wiring work and attachment work can be performed from the back side even for devices attached to the side plates.
And if installation and wiring of an apparatus are performed, a roof board and a door should just be attached, covering the back opening part left by the main back board part from the some sub back board part.

  In addition, if a plurality of sub back plate parts covering the back opening portion left by the main back plate part are divided vertically, install one sub back plate part divided after installing the transformer. A switch or the like is attached to the one auxiliary back plate portion, and the wiring operation from the opening before the attachment of the other auxiliary back plate portion to the transformer can be performed.

  Further, one of the plurality of sub-back plate portions covering the back opening portion left by the main back plate portion is formed in the fitting type sub-back plate portion that closes the work window hole formed in the other sub-back plate portion. If it is assumed, it is convenient to perform maintenance by attaching and detaching the fitting-type sub-back plate portion even after the cabinet is assembled.

Next, a preferred embodiment of the present invention will be described with reference to the drawings.
1 to 3 are perspective views showing an electric equipment storage cabinet according to the present invention. This electrical equipment storage cabinet is composed of a bottom plate 1, left and right side plates 2, 3, a back plate 4, a roof plate 5, and a door 6 that opens and closes a front opening, and has a so-called monocoque structure that does not employ a frame structure. It is.

  The door 6 has a door frame (not shown) attached to the front opening and the door 6 attached thereto. Further, the bottom plate 1 and the left and right side plates 2 and 3 are connected to each other by bending pieces provided at the contact edges by fastening materials such as bolts and nuts, and the back plate 4 is also connected to the bottom plate 1 and the left and right side plates 2 and 3. The bent pieces provided at the contact edge are connected to each other by fastening materials such as bolts and nuts, and the roof plate 5 is attached to the bent pieces formed at the upper ends of the left and right side plates 2 and 3 by mounting brackets. Is.

  In this cabinet, the back plate 4 covering the back opening 40 is connected to the main back plate 41 and the left and right side plates 2 and 3, and the back opening portion 401 left by the main back plate 41 is divided into a plurality of parts. The auxiliary back plate portion 42 covers the surface.

  That is, as shown in FIGS. 4 to 7, the back plate 4 is formed by forming a main back plate portion 41 integrally connecting the left and right side plates 2, 3 below the back plate 4 and leaving the back opening portion. The upper surface of the back plate 4 covering 401 is formed into a plurality of sub-back plate portions 42, 42 that are vertically divided into left and right.

As shown in FIG. 3, the rear plate 4 configured as described above is performed from the rear opening portion 401 left by the main rear plate portion 41 of the rear plate 4 covering the rear opening 40 of the cabinet, as shown in FIG. 3. It is something that can be done. In particular, the workability when wiring on the back side of the transformer is improved.
In addition, since the left and right side plates 2 and 3 are connected and integrated by the main back plate 41, wiring work and attachment work can be performed from the back side even for devices attached to the side plates.

As an example of the process of assembling the cubicle using the illustrated cabinet, a transformer is first installed at a predetermined location on the bottom plate 1. Next, the main back plate part 41, the left and right side plates 2, 3 are attached, and the door frame is further attached. Next, wiring is performed from the remaining back opening 401 to the back side of the transformer.
Subsequently, a phase advance capacitor and a high-voltage load switch are attached in advance to the right sub-back plate portion 42 from the front side, and the sub-back plate portion 42 is attached. Then, wiring work is performed from the rear opening portion 401a to which the left sub-back plate portion 42 is attached, and the left sub-back plate portion 42, the roof plate 5 and the door 6 are attached.

In addition, the specific structure of embodiment shown in FIGS. 4-12 of the main back plate part 41 and the two sub back plate parts 42 which comprise the back plate 4 is as follows.
That is, the main back plate part 41 is a folded piece for attaching a device and a wiring support to the tip of a bent piece 41a continuously formed inwardly at 90 degrees formed at one end of the left and right side plates 2 and 3 side. 41b is provided. Further, the main back plate part 41 is formed by connecting upright standing pieces 41d upward at the front ends of horizontal bent pieces 41c whose upper sides are connected inward by 90 degrees, and two horizontal bent pieces 41c. The lower back plate portions 42 and 42 are supported at the lower end thereof, and the horizontal bent pieces 41c and the rising pieces 41d are used to prevent the intrusion of rainwater transmitted by the sub back plate portions 42.

  Also, the right sub-back plate portion 42 of the two sub-back plate portions 42, 42 is a bent piece that is connected inward by 90 degrees on the side located on the end side that is the right side plate 3 side. 42a is provided with a folding piece 42c with a mounting hole 42b for attaching a device, wiring support, etc. to the tip of 42a, and a mounting bracket (not shown) for attaching a phase advance capacitor to the bent piece 42a on the side located on the center side Are provided by welding.

  In addition, the left sub-back plate portion 42 has a device, a wiring support, etc. attached to the tip of a bent piece 42a that is connected inward by 90 degrees on the side located on the side of the left side plate 2 side. A folding piece 42c with a hole 42b is provided, and a hook piece 42d facing the right sub-back plate 42 is continuously provided at the tip of the bent piece 42a on the side located at the center side. A hole 42e for attaching a wiring support or the like is provided. The bent piece 42a and the flange piece 42d prevent rainwater entering from the gap between the left and right sub-back plate portions 42, 42 from entering the inside, and the rainwater flowing below rises from the horizontal bent piece 41c. The piece 41d does not enter the inside. The left and right sub-back plate portions 42, 42 are provided with bent pieces 42f supported by the horizontal bent pieces 41c.

  Further, as shown in FIG. 13, the left and right side plates 2 and 3 can be supported more stably by integrating the back plate 4 with the left and right side plates 2 and 3. After that, it is possible to install and wire the device from the back opening portion left by the main back plate part, as in the above-described embodiment.

  In addition, as shown in FIG. 14, the operation of forming one of the plurality of sub-back plate portions 42, 42 covering the back opening portion left behind by the main back plate portion 41 on the other sub-back plate portion 42. Assuming that the fitting-type sub-back plate portion 42 that closes the window hole 42g is formed, it is convenient to perform maintenance by detaching the fitting-type sub-back plate portion 42 even after the cabinet is assembled.

The schematic perspective view which shows the cabinet for electrical equipment storage which concerns on embodiment of this invention. The schematic perspective view which shows the assembly process of the electrical equipment storage cabinet which concerns on embodiment of this invention. The schematic perspective view which shows the next process of the assembly process of the cabinet for electrical equipment storage which concerns on embodiment of this invention. The perspective view which shows the backplate used for embodiment of this invention from an inner surface side. The front view which shows the backplate used for embodiment of this invention from the inner surface side. The perspective view which shows the backplate used for embodiment of this invention from the outer surface side. The front view which shows the backplate used for embodiment of this invention from the outer surface side. The perspective view which shows the connection location of a main back surface board part and a sub back surface board part. Sectional drawing which shows the connection location with the left and right sub-back board parts. Sectional drawing which shows the connection location of a main backplate part and a sub-backplate part. The perspective view shown from the inner surface side combined with the main back plate part and one sub back plate part. The perspective view shown from the outer surface side combined with the main back plate part and one sub back plate part. The perspective view which shows the other example 1 of the backplate used for embodiment of this invention from the outer surface side. The perspective view which shows the other example 2 of the backplate used for embodiment of this invention from an outer surface side.

Explanation of symbols

2 Side plate 3 Side plate 4 Back plate
41 Main back plate
42 Sub back plate

Claims (3)

A monocoque-structured electrical equipment storage cabinet, wherein a back plate that covers the back opening of the cabinet is a main back plate that is integrally connected to the left and right side plates, and a plurality of back openings that are left by the main back plate. A cabinet for storing electrical equipment, characterized in that it is covered from the sub-back plate. The electrical equipment storage cabinet according to claim 1, wherein a plurality of sub-back plate portions covering the back opening portion left by the main back plate portion are vertically divided. Claims: One of a plurality of sub-back plate portions covering a back opening portion left by the main back plate portion is formed in a fitting type sub-back plate portion that closes a work window hole formed in another sub-back plate portion. The electrical equipment storage cabinet of 1.

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