JP3045023U - Switchboard protection device - Google Patents

Abstract

(57) [Abstract] [Problem] It can be installed without protruding from the front of a switchboard, and is excellent in aesthetic appearance. A winding mechanism (3) for pulling out, extending, winding and storing a protection sheet (4) is housed in a protection body (2), and the protection body (2) can be fixed to an upper end of a switchboard (7). Protective sheet 4 on front plate 2a of main body 2
Entrance 2b is provided.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a protection device for a switchboard installed in a power station, a substation, or the like.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, as a protective device for a switchboard, for example, a device disclosed in Japanese Patent Application Laid-Open No. 8-9521 is known. This structure will be described with reference to FIG. The switchboard protection device 1 has a winding mechanism 3 housed inside a protection main body 2, and a protection sheet 4 made of a transparent antistatic vinyl sheet is connected to the winding mechanism 3. A bottom bar 5 is fixed to an end of the protection sheet 4, and an engagement ring 6 is provided to protrude from the center of the bottom bar 5.

The winding mechanism 3 uses the elastic force of a torsion coil spring to accumulate the urging force of the torsion coil spring and to restore the opening of the torsion coil spring, thereby extending and retracting the protection sheet 4 and storing the winding. Has become. Examples of this kind of winding mechanism 3 include JP-B-58-24593, JP-B-58-40636, and JP-B-58-41394.

Therefore, the unitized switchboard protection device 1 is fixed to the upper end of the switchboard 7. The worker can cover the front surface 7a of the switchboard 7 with the protective sheet 4 by hooking the working rod 8 on the engagement ring 6 and pulling it down.

[0005]

[Problems to be solved by the invention]

 In the above prior art, since the protection sheet 4 is drawn out from the lower surface of the protection main body 2, the switchboard protection device 1 must be installed so as to protrude from the front surface 7a of the switchboard 7, which is not aesthetically pleasing. Was. Further, since the protection sheet 4 is merely pulled down and kept in that state, the lowered protection sheet 4 may be easily pulled up (rolled up).

A first object of the present invention is to provide a switchboard protection device which can be installed without protruding from the front of the switchboard and which is aesthetically superior.

[0007] A second object of the present invention is to provide a switchboard protection device capable of reliably holding a lowered protection sheet in that state.

[0008]

[Means for Solving the Problems]

 The first means of the present invention for solving the first problem is to use the elastic force of the torsion coil spring to accumulate the urging force of the torsion coil spring and restore the open state, whereby the protective sheet is pulled out and extended. In the switchgear protection device in which the winding mechanism for winding and storing is housed in the protection main body and the protection main body can be fixed to the upper end of the switchboard, the entrance and exit of the protection sheet are provided on the front plate of the protection main body. Features.

[0009] A second means of the present invention for solving the first problem is that the entrance in the first means is provided on a lower end side of a front plate of the protective main body and is provided on an outer side. It is characterized by having a seat guide portion inclined upward toward the inside.

[0010] A third means of the present invention for solving the first and second problems is that, in the first means, a magnetic field is applied to a back surface of a bottom bar fixed to an end of the protective sheet. The stone is fixed.

A fourth means of the present invention for solving the first problem is that, in the first means, a rear end of a bottom plate of the protection main body is fixed to an upper end of the switchboard. A mounting plate which is located on the lower surface side of the upper plate of the U-shaped nameplate and has a screw portion to which the bolt is screwed is integrally provided, and the bolt is screwed into the screw portion of this mounting plate. It is characterized by fixing the distribution panel protection device to the nameplate.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. Note that the same or corresponding members as those in FIG. The switchboard protection device 1 has a winding mechanism 3 of a well-known structure housed inside a protection main body 2 as in the conventional case, and a protection sheet 4 is connected to the winding mechanism 3. A bottom bar 5 is fixed to an end of the protective sheet 4, and an engagement ring 6 is provided to protrude from the center of the bottom bar 5.

In the present embodiment, an entrance 2 b of the protection sheet 4 is provided on the front plate 2 a of the protection main body 2. The entrance 2b is provided on the lower end side of the front plate 2a, and is provided with a sheet guide portion 2c which is inclined upward from the outside toward the inside. In addition, 10 is a back cover and 11 is a nameplate.

As described above, since the entrance 2b of the protection sheet 4 is provided on the front plate 2a of the protection main body 2, the front surface (the front plate 2a) of the switchboard protection device 1 projects from the front surface 7a of the switchboard 7. It can be installed on the same surface without causing any aesthetic problems. By providing the entrance 2b at the lower end of the front plate 2a, the nameplate 11 can be attached to the front plate 2a. In addition, since the entrance 2b has a sheet guide portion 2c which is inclined upward from the outside toward the inside, the protective sheet 4 is guided by the sheet guide portion 2c to draw out and take up, so that the protective sheet 4 is smoothly placed. Pulling and winding are performed.

A magnet 12 is fixed to the back surface of the bottom bar 5. When the front panel of the switchboard 7 is a metal plate, the magnet 12 is attracted to the switchboard 7 by pulling down the protective sheet 4 and bringing the magnet 12 into contact with the lower end of the switchboard 7, and the protective sheet 4 is placed on the front face of the switchboard 7. 7a is kept covered. When the front plate of the switchboard 7 is not a metal plate, a metal plate may be attached to the lower end of the front surface 7a.

FIG. 3 shows another embodiment of the present invention. At the upper end of the switchboard 7, a nameplate 20 having a U-shaped cross section to which a nameplate 11 is attached is fixed. In this embodiment, the switchboard protection device 1 can be easily attached to and detached from the switchboard 7 as described above. At the rear end of the bottom plate 2d of the protective body 2, a mounting plate 21 inserted into the rear end of the upper plate 20a of the nameplate 20 is integrally provided, and a bolt 22 is screwed to the mounting plate 21. A screw portion is formed.

Then, the switchboard protection device 1 is placed so that the mounting plate 21 is located on the lower surface side of the upper plate 20 a of the name plate 20, and the upper plate 20 a and the bottom plate 2 d are tightened with the bolts 22. By tightening the locking nut 23, the switchboard protection device 1 can be easily fixed to the nameplate 20. In the case of the present embodiment, the case where the upper plate of the protective main body 2 and the back cover 10 are not shown is shown, but these may be provided.

[0018]

[Effect of the invention]

 According to the configuration of the first aspect of the present invention, the switchboard can be installed without protruding from the front surface of the switchboard, which is excellent in appearance. According to the configuration of the second aspect, in addition to the effect of the first aspect, an effect that the protective sheet can be smoothly pulled out and wound up can be obtained. According to the configuration of the third aspect, in addition to the effect of the first aspect, an effect is obtained that the lowered protective sheet can be reliably held in that state. According to the configuration of claim 4, in addition to the effect of claim 1, it is possible to easily attach and remove the switchboard protection device to the switchboard having a name plate having a U-shaped cross section fixed to the upper end of the switchboard. The effect is obtained.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a switchboard protection device of the present invention.

FIG. 2 is a partial cross-sectional side view of the switchboard protection device.

FIG. 3 is a partial sectional side view showing another embodiment of the switchboard protection device of the present invention.

FIG. 4 is an external perspective view of a conventional switchboard protection device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Switchboard protective device 2 Protective body 2a Front plate 2b Doorway 2c Sheet guide part 2d Bottom plate 3 Winding mechanism 4 Protective sheet 5 Bottom bar 7 Switchboard 7a Front surface 12 Magnet 20 Nameplate 21 Mounting plate 22 Bolt

Claims (4)

[Utility model registration claims] 1. Using the elastic force of a torsion coil spring,
By storing the urging force of the torsion coil spring and opening and restoring, a winding mechanism that draws out, expands, and retracts the protection sheet is housed in the protection body, and this protection body can be fixed to the upper end of the switchboard. A protection device for a switchboard, wherein an entrance of the protection sheet is provided on a front plate of the protection main body. 2. The switchboard according to claim 1, wherein the entrance has a sheet guide provided at a lower end of the front plate of the protective body and inclined upward from the outside toward the inside. Protective equipment. 3. The switchboard protection device according to claim 1, wherein a magnet is fixed to a back side of the bottom bar fixed to an end of the protection sheet. 4. A screw at a rear end of a bottom plate of the protective body, which is located on a lower surface side of an upper plate of a name plate having a U-shaped cross section and fixed to an upper end of the switchboard, and to which a bolt is screwed. 2. The switchboard protection according to claim 1, wherein a mounting plate having a portion formed therein is integrally provided, and a bolt is screwed into a screw portion of the mounting plate and tightened to fix the switchboard protection device to the nameplate. apparatus.