JP3131499U - Skeleton type low voltage switchboard - Google Patents

Abstract

Disclosed is a skeleton type low-voltage switchboard that can reduce costs, has excellent compactness, and is easy to manufacture and maintain.
The present invention provides a main frame 11 formed in a substantially rectangular parallelepiped shape, subframes 12 and 12 'formed in a substantially rectangular parallelepiped shape of the main frame 11, and attached to the subframes 12 and 12'. In the skeleton type low-voltage switchboard 10 comprising the breakers 16 and 16 ′ with plug-type leakage alarm function and the control circuit unit 15 mounted on the main frame 11, the entire peripheral surface of the main frame 11 is transparently protected. Plates 13 and 14 are attached.
[Selection] Figure 1

Description

  The present invention relates to a skeleton type low voltage switchboard used in a power receiving facility or the like.

Conventionally closed switchboards are provided with an iron door or the like. For example, Patent Document 1 (Japanese Patent Laid-Open No. 2003-219515) includes a housing having an opening on the front surface and a power receiving branch unit that has a rectangular attachment member and performs power receiving branching on the inside of the housing. A board apparatus in which a door is arranged in the opening is described.
JP 2003-219515 A

  The conventional switchboard as described above has a configuration that uses an iron door or the like, so there is a problem that maintenance must be performed after the door is opened and maintenance is not good. . In addition, the iron door has a problem that it is difficult to reduce the cost of the switchboard because the price is high. In addition, iron doors are heavy and difficult to handle, so there is a problem that the work efficiency during production is reduced. In addition, the conventional switchboard is made of iron, is heavy, and has a problem of poor space performance.

  As described above, the conventional switchboard generally has various problems such as manufacturing problems, cost problems, maintainability problems, and space problems.

  In order to solve such a problem, the device according to claim 1 includes a main frame formed in a substantially rectangular parallelepiped shape, a subframe formed in a substantially rectangular parallelepiped shape of the main frame, and an attachment to the subframe. In the skeleton type low-voltage switchboard comprising a breaker with a plug-type leakage alarm function and a control circuit unit attached to the upper part of the main frame, a transparent protective plate is attached to the entire peripheral surface of the main frame. To do.

  The invention according to claim 2 is characterized in that, in the skeleton type low-voltage switchboard according to claim 1, the transparent protective plate is made of polycarbonate.

  The invention according to claim 3 is characterized in that, in the skeleton type low-voltage switchboard according to claim 1 or 2, the transparent protective plate is attached to the entire peripheral surface of the main frame by a drooping hole.

  The invention according to claim 4 is characterized in that, in the skeleton type low-voltage switchboard according to claim 3, the drooping holes are provided at both left and right ends of the transparent protective plate.

  The invention according to claim 5 is characterized in that, in the skeleton type low-voltage switchboard according to claim 3 or 4, the drooping hole is provided at an intermediate point where the right and left weight balance of the transparent protective plate is equal. To do.

  According to the skeleton type low-voltage distribution board of the present invention, the inside and outside of the skeleton type low-voltage distribution board are separated by a transparent protective plate without using an iron door or the like, so that the visibility is excellent and the maintenance becomes easy. Moreover, since the transparent protective plate is cheaper than iron doors, the cost of the skeleton type low-voltage switchboard can be reduced. In addition, the transparent protective plate is light in weight and easy to handle, so that the work efficiency during manufacturing is improved.

  Furthermore, according to the skeleton type low-voltage switchboard of the present invention, since the circuit breaker with the plug-type leakage alarm function is adopted, the skeleton type low-voltage switchboard 10 can be configured compactly. In addition, it is not necessary to manufacture and attach a branching conductor connected to the power supply side of the circuit breaker, and the manufacturing process of the skeleton type low-voltage switchboard 10 is simplified. In addition, when the circuit breaker is added or the specifications are changed, the work of tightening the screw to the branch conductor or the power supply side terminal of the circuit breaker is not required, and the workability is improved.

  Further, according to the skeleton type low-voltage switchboard of the present invention, since the transparent protective plate having the screw hole as the screw hole is used, it is possible for one worker to easily attach and remove the transparent protective plate.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an outline of a skeleton type low-voltage switchboard according to an embodiment of the present invention as viewed from the front, and FIG. 2 is a view of the vicinity of the front of the skeleton type low-voltage switchboard according to the embodiment of the present invention. It is a figure which shows a cross section.

  1 and 2, 10 is a skeleton type low voltage switchboard, 11 is a main frame, 12, 12 'are subframes, 13 is a first front transparent protective plate, 14 is a second front transparent protective plate, and 15 is a control circuit unit. , 16 and 16 ′ are circuit breakers with plug-type leakage alarm function, 17 and 17 ′ are blindfold plates, 19 are screws, 23 is a first side transparent protective plate, and 24 is a second side transparent protective plate. .

  The main skeleton part of the skeleton type low voltage switchboard 10 is composed of a main frame 11 made of L-shaped steel. The main frame 11 has a substantially rectangular parallelepiped shape, and accommodates electrical equipment such as a circuit breaker in its internal space.

  As shown in the figure, subframes 12 and 12 ′ are provided in the internal space of the main frame 11, and circuit breakers 16 and 16 ′ with plug-type leakage alarm function are attached to the subframes 12 and 12 ′. Such circuit breakers 16 and 16 'with a plug-in leakage alarm function have a structure in which a plug (not shown) of the plug-in circuit breakers 16 and 16' with a plug-in leakage alarm function is directly inserted into the main bus. Since the branch conduction band from the power supply is not required, the branch conduction band space on the power supply side of the circuit breakers 16 and 16 'with the plug-type leakage alarm function is not required, and the size of the skeleton type low-voltage switchboard 10 can be made compact. it can. Further, in the present invention, since the breakers 16 and 16 'with the plug-type leakage alarm function are used as the breaker, it is not necessary to produce and install a branch conductor connected to the power supply side of the breaker, and the skeleton type low voltage switchboard There is an advantage that the production time of 10 can be shortened.

  In addition, when the circuit breaker is added to the skeleton type low-voltage switchboard 10 or the specification is changed, the screw tightening work to the branch conductor bus or the power supply terminal of the circuit breaker is not required, improving the workability of the workers. Therefore, the working time can be shortened.

  Blindfold plates 17 and 17 ′ are attached to places where the circuit breakers 16 and 16 ′ with the plug-in type leakage alarm function between the subframes 12 and 12 ′ are not provided, and foreign matters from the front of the skeleton type low-voltage switchboard 10. Prevents intrusion. In addition, when adding a circuit breaker in the skeleton type low-voltage switchboard 10, it is possible to cope with the problem by removing the cover plate 17 at the additional location and inserting the circuit breaker 16 with a plug-in type earth leakage alarm function at that location. The efficiency is very high.

  The space R outside the sub-frames 12 and 12 ′ in the skeleton type low-voltage switchboard 10 is used as a space for routing a main bus (not shown) and the like.

  A control circuit unit 15 is provided above the main frame 11 in the skeleton type low-voltage switchboard 10.

  A first front transparent protective plate 13 and a second front transparent protective plate 14 are provided on the front surface of the skeleton type low voltage switchboard 10 so as to cover the outside of the switching operation means region of the circuit breaker 16 with the plug-type leakage alarm function. Yes. Further, a first side transparent protective plate 23 and a second side transparent protective plate 24 are provided on the entire side surface of the skeleton type low voltage switchboard 10. Although not shown, a similar transparent protective plate is also provided on the back surface of the skeleton type low-voltage switchboard 10.

  A transparent polycarbonate plate is used as a transparent protective plate such as the first front transparent protective plate 13, the second front transparent protective plate 14, the first side transparent protective plate 23, and the second side transparent protective plate 24. In the skeleton type low-voltage switchboard 10 according to the present invention, since it is configured such that substantially the entire peripheral surface is covered with such a polycarbonate plate, it is easy to perform maintenance without removing the transparent protective plate, It is possible to perform visual inspection of the electrical equipment such as the breaker 16 with a plug-in leakage alarm function and a main bus (not shown).

  Polycarbonate is excellent in electrical insulation as a material, and such a transparent protective plate made of polycarbonate does not cause an electric accident even if it comes into contact with a charged part.

  A normal switchboard is configured to cover an internal electrical facility by providing an iron door. In the skeleton type low-voltage switchboard 10 of the present invention, the skeleton type low-voltage switchboard 10 is isolated by such a transparent protective plate. Therefore, there is a merit that the cost can be reduced. In addition, the transparent protective plate is lighter in weight and easier to handle than an iron door or the like, so that the work efficiency during manufacturing is improved.

  Next, the attachment work to the main frame 11 of the transparent protective plate in this invention is demonstrated. FIG. 3 is a view showing a transparent protective plate of the skeleton type low-voltage switchboard according to the embodiment of the present invention. FIG. 3 shows the first front transparent protective plate 13 extracted from FIGS. 1 and 2. In FIG. 3, one of the screw holes 20 formed for attaching the first front transparent protective plate 13 to the main frame 11 is shown enlarged. As shown in FIG. 3, a daruma pit is used as the screw hole of the transparent protective plate in the present invention. According to such a daruma pit, the workability of attaching and removing the transparent protective plate is greatly improved. All the screw holes of the transparent protective plate may be harpoon pits, or only a part of them may be daruma pits. When only a part of the screw hole of the transparent protective plate is used as a drooping hole, the screw holes 20 and 20 '' at both ends of the transparent protective plate 13 and the screw holes 20 at the middle point where the weight balance between the right and left of the transparent protective plate 13 is equal. It is desirable to use 'as a darling pit.

  By making the screw holes 20, 20 ″ at both ends of the transparent protective plate 13 into dart holes, it is possible to improve workability when attaching the transparent protective plate 13 to the main frame 11. Further, by making the screw hole 20 ′ at the middle point where the weight balance between the left and right sides of the transparent protective plate 13 is equal as a dart hole, the workability when removing the transparent protective plate 13 from the main frame 11 can be improved.

  When the skeleton type low-voltage switchboard 10 is attached, a plurality of workers perform the work. However, in the case of maintenance inspection, one worker may respond alone. In such a case, when the transparent protective plate 13 in which the daruma pit is formed is used, the workability is very good even by one worker.

  As described above, according to the skeleton type low-voltage switchboard of the present invention, the inside and outside of the skeleton type low-voltage switchboard are separated from each other by a transparent protective plate without using an iron door or the like. . Moreover, since the transparent protective plate is cheaper than iron doors, the cost of the skeleton type low-voltage switchboard can be reduced. In addition, the transparent protective plate is light in weight and easy to handle, so that the work efficiency during manufacturing is improved.

  Furthermore, according to the skeleton type low-voltage switchboard of the present invention, since the circuit breaker with the plug-type leakage alarm function is adopted, the skeleton type low-voltage switchboard 10 can be configured compactly. In addition, it is not necessary to manufacture and attach a branching conductor connected to the power supply side of the circuit breaker, and the manufacturing process of the skeleton type low-voltage switchboard 10 is simplified. In addition, when the circuit breaker is added or the specifications are changed, the work of tightening the screw to the branch conductor or the power supply side terminal of the circuit breaker is not required, and the workability is improved.

  Further, according to the skeleton type low-voltage switchboard of the present invention, since the transparent protective plate having the screw hole as the screw hole is used, it is possible for one worker to easily attach and remove the transparent protective plate.

It is the figure which shows the outline which looked at the skeleton type low voltage switchboard concerning the embodiment of the invention from the front. It is a figure which shows FIG. 1A-A 'cross section of the skeleton type | mold low voltage switchboard front surface vicinity which concerns on embodiment of this invention. It is a figure which shows the transparent protective plate of the skeleton type | mold low voltage switchboard which concerns on embodiment of this invention.

Explanation of symbols

10 ... Skeleton type low voltage switchboard, 11 ... Main frame, 12, 12 '... Subframe, 13 ... First front transparent protective plate, 14 ... Second front transparent protective plate, 15 ..Control circuit unit 16, 16 '... Breaker with plug-in type earth leakage alarm function, 17, 17' ... Blindfold plate, 19 ... Screw, 20 ... Screw hole, 23 ... 1st side transparent protective plate, 24 ... 2nd side transparent protective plate

Claims (5)

A main frame formed in a substantially rectangular parallelepiped shape, a sub-frame formed in a substantially rectangular parallelepiped shape of the main frame, a breaker with a plug-type leakage alarm function attached to the sub frame, and attached to the upper part of the main frame In a skeleton type low voltage switchboard consisting of a control circuit unit
A skeleton type low-voltage switchboard, wherein a transparent protective plate is attached to the entire peripheral surface of the main frame. The skeleton type low-voltage switchboard according to claim 1, wherein the transparent protective plate is made of polycarbonate. The skeleton type low-voltage switchboard according to claim 1 or 2, wherein the transparent protective plate is attached to the entire peripheral surface of the main frame by a dart hole. 4. The skeleton type low-voltage switchboard according to claim 3, wherein the daruma drop holes are provided at both left and right ends of the transparent protective plate. The skeleton type low-voltage switchboard according to claim 3 or 4, wherein the daruma drop hole is provided at an intermediate point where the left and right weight balance of the transparent protective plate is equal.

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