JPH0794875A - Box body for electric apparatus - Google Patents

Abstract

PURPOSE:To facilitate replacements of parts without complicating a box body, by installing an apparatus truck on which a heavy apparatus is mounted, in the lower part of the box body, so as to be able to be freely inserted and drawn out. CONSTITUTION:For example, when a battery 8 of a small-sized uninterruptive power supply equipment is exchanged, a front panel 1 only is removed, a battery switch 51 shown in a main circuit connection diagram is turned OFF, bolts 21 are loosened in the state that an AC power supply is connected, and a sealing part is drawn out until the front end of a guide plate. Level adjusters 5 are a little rotated and lowered at a specified height. Thereby casters 4 are made to descend on a floor surface, and a battery truck 11 is drawn out in the front of the box body by holding a hand grip 12 on the front end of the truck. In the small-sized uninterruptive power supply constituted in the above manner, the whole box body is not necessary to be moved from the installation position. In the state that the AC power supply and the output side are individually connected, the battery truck 11 is drawn out. Without moving other neighboring apparatuses, the battery can be individually and easily exchanged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box for electric equipment which constitutes, for example, a small uninterruptible power supply.

[0002]

2. Description of the Related Art FIG. 9 is a perspective view showing a conventional small uninterruptible power supply, and FIG. 10 is an exploded perspective view of FIG. 9 and 10, the box body of the small uninterruptible power supply is provided with a frame 56 formed in a substantially rectangular parallelepiped shape, a front plate 1 provided on the front surface of the frame 56, and left and right sides of the frame 56. The side plate 3, the ceiling plate 2 provided at the upper end of the frame 56, and the bottom frame 58 provided at the bottom of the frame 56.

Of these, casters 4 are attached to the left and right of the front and rear ends of the bottom of the frame 56, and level adjusters 5 are attached to the inside of each caster 4 at the bottom. Further, inside the frame 56, an electronic circuit section 7 not shown in detail, which is indicated by a chain double-dashed line in FIG. 10, is housed in the upper portion, and a bottom frame 58 attached to the bottom portion of the frame 56 has a substantially convex shape. A plurality of batteries 8 mounted on the attached mounting plate 57 are stored.

In the compact uninterruptible power supply device constructed as described above, the level adjuster 5 is adjusted and lifted when it is carried into the electric room of the building, and the caster 4 moves it inside the building. In addition, when fixing at a predetermined position, the height of the level adjuster 5 is adjusted so that the level adjuster 56 supports the load of the frame 6 and the electronic circuit section 7 and the battery 8 housed in the frame 56. .

By the way, the battery 8 incorporated in the small uninterruptible power supply is replaced every 3 to 5 years as a preventive maintenance measure in order to maintain the reliability of the small uninterruptible power supply. At this time, level adjuster 5
The small uninterruptible power supply is moved to a predetermined place by the casters 4 by rotating and lifting, the main power source and the battery switch are disconnected, and then the left and right side plates 3 are removed to take out the battery 8. As shown in the right side of FIG. 10, when the battery 8 is attached to the battery dedicated panel 57, the dedicated panel to which the battery 8 is fixed is lifted by several workers and inserted into the frame 56 or the lifter. The method of inserting in is adopted.

[0006]

However, in the box for electric equipment constructed as described above, it takes a lot of time and effort to move the battery to a predetermined place for replacing the battery or to set it up on the lifter. Even if the battery SW is turned off while the main power is still on, that is, if hot line work is desired, there are many live parts such as parts and wiring inside the electronic circuit section 7 around the battery 8. Therefore, workability is poor. Further, at the time of assembly in the factory, the casters 4 are attached only to heavy objects after the battery is installed, but it is necessary to move or carry the crane or a plurality of workers.

Further, since the batteries are individually attached to the bottom plate surface of the housing, not only is the work time consuming, but also
Even if a battery-dedicated panel is provided for assembling and wiring, it is very difficult to lift and assemble it into the housing, and as a result, a double structure of the housing bottom plate surface results in an expensive housing. Also,
In this way, a commercially available tray-type unit can be incorporated into the housing to facilitate movement, carrying, maintenance / inspection / replacement after battery assembly, but then the structure of the frame is complicated, And it becomes expensive.

SUMMARY OF THE INVENTION An object of the present invention is to provide a box for electric equipment which allows easy exchange of supplies without complicating the box.

[0009]

According to a first aspect of the present invention, there is provided a box body for electric equipment in which a heavy equipment is stored in a lower part of a box body, wherein the heavy equipment is placed in a lower part of the box body. It is characterized in that the dolly can be inserted and removed freely.

According to a second aspect of the present invention, in a box body for electric equipment in which a heavy equipment is stored in a lower part of a box body, an equipment having a heavy equipment placed on a lower part of the box body and a caster provided on a lower part of the box body. It is characterized in that the dolly can be inserted and removed freely.

Further, according to a third aspect of the present invention, in a box body for electric equipment in which a heavy equipment is stored in a lower part of the box body, the heavy equipment is placed on a lower part of the box body, and the heavy body is mounted on a front end of the box body. It is characterized in that a fixing portion for fixing to the lower portion is provided, and an equipment cart equipped with casters is provided at the lower portion so as to be detachable.

[0012]

According to the first aspect of the present invention, maintenance / inspection and replacement of heavy equipment are performed on the equipment cart pulled out from the box. Further, in the invention described in claim 2, the maintenance / inspection and the replacement work of the heavy equipment are performed on the equipment carriage pulled out from the box body via the casters.

Further, in the invention according to claim 3, for maintenance / inspection or replacement work of heavy equipment, the fixing portion fixed to the box body is removed, and the equipment cart pulled out from the box body via casters is used. Will be done.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1A is a perspective view showing a box for electric equipment of the present invention, FIG. 1B is a connection diagram of a battery 8 housed in the box for electric equipment, and FIG. , A of FIG. 1 (a)
FIG. 3 is a partially enlarged perspective view of a cross-sectional enlarged detail view.

In FIGS. 1, 2 and 3, the front plate 1,
The ceiling plate 2 and the side plate 3 are attached to the box frame 6 shown in FIG. 3 similarly to FIG. In this box frame 6, as shown in detail in FIG. 5 (a), left and right guide bones 6k, 6m bent in a substantially Z shape, and these guide bones 6k, 6m.
A bottom bone 6j having a substantially L-shaped cross section provided laterally between the rear ends,
A vertical bone 6a having an L-shaped cross section which is erected at the front end of the guide bone 6k, and a vertical bone 6b which is erected at the front end of the guide bone 6m, and the guide bone 6
Vertical bone 6c and guide bone 6m which are erected at the rear end of k, and vertical bone 6d which is erected at the rear end of front bone 6e and vertical bones 6c and 6d which are laid laterally between the upper ends of vertical bones 6a and 6b. A rear bone 6f laterally provided between the upper ends of the vertical bones, a side bone 6g provided front and back between the upper ends of the vertical bones 6a and 6c, and a lateral bone 6h provided front and back between the upper ends of the vertical bones 6b and 6d. It is roughly composed.

Among these, level adjusters 5 are provided on the lower surfaces before and after the guide bones 6k and 6m so as to be vertically adjustable as in FIG. At the front ends of the guide bones 6k and 6m, prismatic mounting bosses 14 are respectively fixed by bolts 35 shown in FIG. 4 showing a detailed enlarged perspective view of a portion B of FIG. The female screw holes 33 are formed in front and rear. Furthermore, on the front surface of this mounting boss 14,
Female screw holes 32 are formed in the front-rear direction.

Further, as shown in FIG. 2, FIG. 5 (a) and FIG. 5 (b) showing a sectional view taken along the line D--D of FIG. 5 (a), the front end is provided on the inner upper surface of the bottom bone 6j. A guide plate 9 curved upward in an arc shape and made of a stainless steel plate for spring is provided, and a strip plate-shaped spacer 10 is provided on the lower surface of the guide plate 9. Below the spacer 10, a plurality of welding nuts 44 are welded to the lower surface of the bottom bone 6j, and the guide plate 9 and the spacer 10 are attached to the guide plate 9 and the spacer 10 from above the guide plate 9. Weld nut is inserted in hole 45 and the lower end is
It is fixed to the bottom bone 6j with a bolt 45 screwed to 44, a washer, or the like.

The guide bone 6 of the box frame 6 constructed in this way
Between k and 6 m, the truck unit shown in the front perspective view of FIG. 3 is inserted from the front as shown by the arrow H with the battery 8 mounted, and fixed to the bolt 21 as shown in FIG. Has been done.

The battery carriage 11 is formed in a U-shape by the bent portions 11b formed on the left and right, as shown in the front perspective view and FIG. 8A showing the E arrow view of FIG. The bottom plate 11a having the same plate thickness as that of the spacer 10 described above is fixed to the central portion of the bottom plate 11a, and U is provided between the bottom plate 11a and the bent portion 11b.
A mounting seat 15 that forms the grooves 15a and 15b, and a fixed seat 13 that is provided on the left and right of the front end of the bottom plate 11a and has a bolt hole 26 formed in the center thereof.
Is roughly composed of. Of these, casters 4 are fixed to the left and right sides of the bottom plate 11a. The handle 12 is fixed to the front end of the mounting seat 15.

Among them, the rear end of the bottom plate 11a is shown in FIG.
As shown in FIG. 8B, which is an enlarged detailed view of the GG cross section of FIG. 8A, a chamfered portion 30 having a slope of about 30 degrees is formed.
Further, as shown in FIGS. 2 and 6 and FIG. 7 which is an enlarged view of FF cross section of FIG. 6, the bolt 21 is loosely fitted from the front into the bolt hole 26 formed in the fixed seat 13. An E ring 24 is attached to the rear portion of the fixed seat 13 at the intermediate portion of the bolt 21. The length L1 shown in FIG. 7 from the insertion portion of the E-ring 24 of the bolt 21 to the rear end is the length L2 from the rear end of the bottom plate 11a shown in FIG. 8B to the rear end of the mounting seat 15. Than a bolt
The thread pitch is 21 threads, which is two threads longer. Also, FIG.
In FIG. 8B, the length L3 from the front end of the spacer 10 to the front end of the guide plate 9 is shorter than the dimension L2 shown in FIG. 8B, as shown in FIG.

Next, a procedure for assembling the electrical equipment box body configured as described above will be described. Assembling of the electronic circuit part and the like excluding the battery 8 is similar to that of the conventional small uninterruptible power supply device shown in FIGS. 9 and 10, and the front plate 1, the ceiling plate 2 and the side plate mounted on the outer periphery of the box frame 6 are mounted. 3 is also the same as the conventional one.
However, the front plate 1 is carried out after the battery unit shown in FIG. 3 is incorporated in the lower end of the box frame 6 as described below.

That is, after mounting the batteries 8 on the battery carriage 11 shown in FIGS. 6 to 8 as shown in FIG. 3 and connecting the respective batteries 8, from the front of the box frame 6 to the arrow H in FIG. The guide bones 6k, 6m of the box frame 6 in which the height of the level adjuster 5 is set to a predetermined height by moving the level adjuster 5 as shown.
Insert between.

At this time, the left and right bent portions of the battery carriage 11
11b is guided inside the guide bones 6k and 6m, and is inserted into the inner surfaces of the guide bones 6k and 6m while sliding lightly. Then, at the final stage of the inserting step, the rear end of the bottom plate 11a shown in FIG. 8B is the front end of the bottom bone 6j shown in FIG. 5B and the front end of the guide plate 42 above the bottom bone 6j. The chamfered portion 30 shown in FIG. 8 (b) is inserted in between, and the inclined surface of the chamfered portion 30 contacts the lower surface of the front end of the guide plate 42.

Then, at this time, the fixed seat of the battery carriage 11
The rear end of the bolt 21, which is loosely fitted to the 13
It is formed on a mounting boss 14 fixed to the front end of 6 m as shown in FIG. 4, and thus abuts on the front end of the screw hole 32. Next, the worker attaches a tightening tool to the head of the bolt 21 and turns the bolt 21 so that the chamfered portion 30 resists the reaction force of the guide plate 9 and reaches a predetermined position in front of the spacer 10. While inserting as shown in FIG. 2, the fixing seat 13 is fixed to the mounting boss 14. further,
The level adjuster 5 is slightly rotated and lifted to a predetermined height, and the front plate 1 is attached.

On the other hand, when replacing the battery 8 of the small uninterruptible power supply unit, the battery carriage 11 is pulled out by the reverse method of the above procedure. That is, only the front plate 1 is removed, and
The battery switch 51 shown in the main circuit connection diagram of FIG.
F, while the AC power source is connected, loosen the bolt 21 and pull out the chamfered portion 30 to the front end of the guide plate 9. Next, the level adjuster 5 is slightly rotated to lower it to a predetermined height, the caster 14 is lowered to the floor surface, and the handle 12 at the front end of the battery carriage 11 is moved.
Hold it and pull it forward.

Therefore, in the small uninterruptible power supply configured as described above, it is not necessary to move the entire box from the installation position in order to replace the battery 8, and the battery is connected with the AC power supply and the output side connected. Without pulling out the dolly and moving other adjacent devices, the battery 8
The battery 8 can be easily replaced because the battery can be replaced independently.

In the above embodiment, the box for electric equipment has been described as a box which constitutes a small uninterruptible power supply, but if the box is a box in which a heavy load is stored in the lower part of the box. ,
For example, by applying it to a box for electric equipment in which a transformer, a reactor, a current transformer, a transformer for a meter, etc. are stored,
In particular, it is easy to carry in and carry out heavy equipment during maintenance and inspection without pulling out the box on the main body side, and it is possible to easily perform work such as maintenance and inspection.

[0028]

As described above, according to the invention of claim 1,
For electrical equipment boxes that contain heavy equipment in the lower part of the box, maintenance / inspection / replacement of heavy equipment is possible by installing a device cart on which the heavy equipment is placed in the lower part of the box in a removable manner. Since the work is performed on the equipment cart pulled out from the box, it is possible to obtain the box for electric equipment in which the articles can be easily replaced without complicating the box.

According to the second aspect of the present invention, in the box for electric equipment in which the heavy equipment is accommodated in the lower portion of the box body, the heavy equipment is placed on the lower portion of the box body and the caster is provided on the lower portion. The equipment trolley can be inserted / removed so that maintenance / inspection and replacement work of heavy equipment is performed on the equipment trolley pulled out from the box via casters, which complicates the box. Without this, it is possible to obtain a box for electric equipment in which the supplies can be easily replaced.

Further, according to the invention described in claim 3,
In a box for electric equipment in which heavy equipment is stored in the lower part of the box, a heavy device is placed on the lower part of the box, a fixing part for fixing to the lower part of the box is provided at the front end, and a caster is provided on the lower part. By installing the equipped equipment cart so that it can be freely inserted and removed, maintenance, inspection, and replacement work for heavy equipment is performed on the equipment cart that has been pulled out from the box body via the casters by removing the fixed part fixed to the box body. As a result, it is possible to obtain a box for electric equipment in which articles can be easily replaced without complicating the box.

[Brief description of drawings]

FIG. 1A is a perspective view showing an embodiment of a box for electric equipment of the present invention, and FIG. 1B is a partial connection diagram showing a main circuit of the box for electric equipment of the present invention.

FIG. 2 is an enlarged detailed view taken along the line AA of FIG.

FIG. 3 is a partially enlarged perspective view of a box for electric equipment of the present invention.

FIG. 4 is an enlarged detailed view of part B of FIG.

FIG. 5A is an enlarged detailed view of a C portion of FIG. (B) is
(A) DD sectional drawing.

FIG. 6 is a partially enlarged perspective view of the box for electric equipment of the present invention, which is different from FIG. 3.

FIG. 7 is an enlarged detailed view of the FF cross section of FIG. 6;

8 (a) is an E arrow diagram of FIG. (B) is (a)
GG cross-section enlarged detailed view of FIG.

FIG. 9 is a perspective view showing a conventional uninterruptible power supply as a box for electric equipment.

FIG. 10 is an exploded perspective view of a conventional uninterruptible power supply as a box for electric equipment.

[Explanation of symbols]

1 ... Front plate, 2 ... Ceiling plate, 3 ... Side plate, 4 ... Casters,
5 ... Level adjuster, 6 ... Box frame, 7 ... Electronic circuit section, 8
... Battery, 9 ... Guide plate, 10 ... Spacer, 11 ... Battery carriage, 12 ... Handle, 13 ... Fixed seat, 14 ... Mounting boss, 15 ... Mounting seat.

Claims (3)

[Claims] 1. A box for electric equipment in which heavy equipment is stored in a lower part of a box, wherein an equipment cart on which the heavy equipment is placed is detachably provided in a lower part of the box. And electrical equipment box. 2. A box for electric equipment, in which a heavy equipment is stored in a lower part of a box, wherein an equipment cart having the heavy equipment placed on a lower part of the box and a caster at a lower part thereof can be freely inserted and removed. An electric equipment box body characterized by being provided. 3. A box for electric equipment, in which a heavy device is housed in a lower part of a box, a fixing part for mounting the heavy device on a lower part of the box, and fixing the heavy device to a lower part of the box at a front end. An electric equipment box body, in which an equipment cart provided with a caster is provided at a lower portion so as to be freely inserted and removed.