JP2002271922A - Knockout cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a knockout cover 1 which has a simple structure and enables heat radiation and ventilation. SOLUTION: These knockout covers 1 are formed integrally with a base 2 or formed so as to be able to couple with knockout parts 3 and can cover the knockout parts 3 having vents 4 and provided in the side surface of the base 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knockout cover which is mounted on a residential power distribution panel which is configured by mounting various electric devices such as a main breaker and a branch breaker on a base and covering the devices with a cover.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional power distribution panel for a house is provided with a notch at an end of a base 10 or a cover 11 for heat radiation, and the base 10 is covered with a cover 11. A gap 13 is formed at the butted portion. As shown in FIG. 5, in the residential power distribution panel 14 that is embedded and mounted in the mounting hole provided in the wall surface, the contact portion 16 provided on the base 15 is in contact with the end of the mounting hole. The heat radiation slit 17 was provided. As described above, the gap 13 and the radiation slit 17 suppress the temperature rise in the panel.

[0003]

However, according to the above-mentioned prior art, the gap 13 and the heat radiation slit 17 are provided so as not to hinder the installation of the equipment, so that the size is limited and the heat radiation effect is not so large. It was not big.
In addition, the distribution board for housing is provided with a knockout part for incoming and outgoing lines in case of wiring from the upper and lower side surfaces, but a part that is not wired in and out at the knockout part by performing wiring on the back side of the base, It was covered with a knockout cover.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a knockout cover which has a simple structure and is capable of dissipating or ventilating heat. It is characterized in that it is formed so as to be able to fit into the portion, a vent hole is provided, and a knockout portion provided on a side surface of the base is covered.

[0005] Further, a plate piece inclined toward the inside of the base is provided in the ventilation hole provided in the knockout cover.

Further, a small fan can be attached to the knockout cover.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A knockout cover according to the present invention is formed integrally with a base of a distribution board for a house or fitted to a knockout portion. The knockout portion, which has not been used except for the conventional incoming and outgoing lines, is used as a vent for heat radiation. Ventilation holes are provided in the knockout cover to dissipate heat and suppress temperature rise in the distribution board.

Further, a plate piece inclined toward the inside of the base is provided in a vent hole provided in the knockout cover to prevent the entry of dust or small animals while obtaining the heat radiation effect.

Further, a small fan can be attached to the knockout cover so that a greater heat radiation effect can be obtained.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A residential distribution board is constructed by mounting various electric devices such as a main breaker and a branch breaker on a base. A knockout portion for wiring is provided on a side surface of the base. If the incoming and outgoing wires of the residential distribution board are made on the upper and lower sides of the base, wire the wires through the knockout part. In addition, when the incoming / outgoing line of the residential power distribution panel is made on the back of the base and the knockout part is not used, cover with a knockout cover.

FIG. 1 shows an embodiment of a knockout cover according to the first aspect of the present invention. The knockout cover 1 is formed integrally with the base 2 or is a separate component from the base 2 and has a knockout portion. 3 so as to be fittable. The knockout cover 1 is provided with a ventilation hole 4 in a slit shape. The heat is radiated by the ventilation holes 4 to suppress the temperature rise in the distribution board.

FIG. 2 shows an embodiment of the knockout cover according to the second aspect of the present invention, wherein a plate piece 7 inclined toward the inside is provided in a ventilation hole 6 provided in the knockout cover 5. The ventilation holes 6 provide a heat radiation effect, and the plate pieces 7 prevent dust or small animals from entering.

FIG. 3 shows an embodiment of a knockout cover according to the third aspect of the present invention. A small fan 9 can be attached to the knockout cover 8. The fan 9 can provide a greater heat radiation effect. Although the specification of the fan 9 is not limited, it is easy to handle as long as it operates by a temperature sensor or corresponds to a power supply of 100V.

[0014]

As described above, the knockout cover according to the first aspect of the present invention has a structure in which the knockout cover is formed integrally with the base or can be fitted into the knockout portion and has a ventilation hole. Since the knockout portion provided on the side surface of the base is covered, heat can be radiated and ventilated at the position where the incoming and outgoing lines are made, so that the effect is greater. In addition, when the wiring of the distribution board for the house is performed on the back of the base, heat can be dissipated in the knockout portion which was a dead space in the past.

[0015] Further, since a plate piece inclined toward the inside of the base is provided in the ventilation hole provided in the knockout cover, a heat radiation effect can be obtained, and dust or small animals can be prevented from entering. Further, if a knockout cover having no highly airtight ventilation holes is used, it is possible to easily cope with a highly airtight house.

Further, since a small fan can be attached to the knockout cover, a greater heat radiation effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view showing a knockout cover according to claim 1 of the present invention.

FIG. 2 is a front view showing a knockout cover according to claim 2 of the present invention.

FIG. 3 is a front view showing a knockout cover according to claim 3 of the present invention.

FIG. 4 is a side view showing a conventional distribution board for a house.

FIG. 5 is a front view showing a conventional residential power distribution panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Knockout cover 2 Base 3 Knockout part 4 Vent hole 5 Knockout cover 6 Vent hole 7 Plate piece 8 Knockout cover 9 Fan

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) H05K 7/20 H02B 1/12 A

Claims (3)

[Claims] 1. A residential distribution panel comprising various electric devices such as a master breaker and a branch breaker mounted on a base and covering the devices with a cover or the like, wherein a knockout cover is connected to the base. A distribution board characterized in that it is formed integrally or so as to be fittable with the knockout portion, a ventilation hole is provided, and a knockout portion provided on a side surface of the base is covered. 2. The distribution board, wherein a plate piece inclined toward the inside of the base is provided in the ventilation hole provided in the knockout cover. Distribution board described in. 3. The knockout cover according to claim 1, wherein a small fan can be attached to the knockout cover in the distribution board.