JP4458448B2 - Cover for distribution panel connection bar - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection copper bar cover that covers a connection copper bar that connects a main breaker of a distribution board and a main copper bar.
[0002]
[Prior art]
As shown in FIG. 3, the conventional connection copper bar cover 21 has a box shape that covers the front, side, and back of the connection copper bar 22 except for the insertion port 23. Furthermore, the inside of the connection copper bar cover 21 is formed with a partition 24 between the copper bars to ensure insulation between the connection copper bars and at the same time protect them from being touched by humans during maintenance and inspection. It was.
[0003]
[Problems to be solved by the invention]
However, the connection copper bar cover 21 in the above-described prior art covers the connection copper bar 22 excessively, requires a lot of insulating material, and raises the manufacturing cost. Further, in the connection copper bar cover 21, the insertion port 23 of the connection copper bar 22 which is only open is also blocked by the wall surface of the main breaker. For this reason, it is difficult to dissipate heat, and when the amount of electricity used increases and the amount of heat generated by the conductive part increases, the temperature rise value specified in the standard is exceeded, which may adversely affect the equipment.
[0004]
[Means for Solving the Problems]
Therefore, the present invention has an object to provide a cover for connecting copper bars having a shape that reduces the material cost of parts and improves workability, and the structure thereof is a fixing claw that can be hooked on the upper end of the connecting copper bar. And the entire circumference protection part surrounding the front side, the side surface and the back side of the connection copper bar in the vicinity of the main breaker connection part, and only the front side of the connection copper bar except for the whole circumference protection part. It is characterized in that a front covering portion for covering the surface is formed.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The cover for connecting copper bars according to the present invention covers the front side of the connecting copper bar by hooking a fixing claw in the vicinity of the connecting portion of the connecting copper bar with the main copper bar. Since it is necessary to insulate the connection portion of the connection copper bar with the main breaker from other metal parts, the cover for the connection copper bar is formed in a box shape, and the front side, side and back sides of the connection copper bar are formed. Cover the entire circumference.
[0006]
【Example】
An embodiment of a cover for connecting copper bars of a distribution board according to the present invention will be described with reference to the accompanying drawings of FIGS.
[0007]
The main breaker and the main copper bar arranged on the distribution board are connected to the R-phase, S-phase, and T-phase by connecting copper bars 1, 2, and 3, respectively. The lengths of the connecting copper bars 1, 2, and 3 are changed so that they do not touch each other, and the connecting portions with the main copper bars are not touched by bending.
[0008]
The connection copper bar cover 4 is formed of an insulating material such as resin. In the connection copper bar cover 4, a fixing claw 5 that can be hooked on the connection copper bar 2 is formed at a position facing the upper end of the S-phase connection copper bar 2.
[0009]
In the vicinity of the connection portion of the connection copper bars 1, 2 and 3 with the main breaker, the shape of the connection copper bars 1, 2 and 3 surrounding the front side, the side surface and the back surface is provided for insulation protection from other metal parts The all-around protection part 6 is formed. At this time, the bottom portion may be opened. The part from the connection with the main copper bar to the connection with the main circuit breaker other than the all-around protection part 6 is formed opposite to the size of the connection copper bars 1 and 2 for the R and S phases, and is touched by a person. A front covering portion 7 that covers only the front side of the connection copper bars 1, 2, and 3 having a possibility is formed.
[0010]
The connection copper bar cover 4 is inserted from the side surfaces of the connection copper bars 1, 2, 3, the fixing claws 5 are hooked and fixed to the upper end of the S-phase connection copper bar 2, and the connection copper bar is connected by the all-around protection unit 6. The front side, the side surface, and the back side of the bars 1, 2, and 3 are coated, and the other portions are coated with the front coating portion 7 to cover the front side of the connection copper bars 1, 2, and 3, and the connection copper bar 1, Cover only a few necessary minimum points, reduce the insulating material to be used, and reduce the manufacturing cost.
[0011]
Moreover, the insulating material which forms the cover for connection copper bars is not limited to the resin, and it is only necessary to obtain an insulating effect.
[0012]
The connection copper bar cover has a shape that covers the entire circumference of the connection copper bar, but may be appropriately changed if necessary by being covered with the wall surface of the breaker.
[0013]
【The invention's effect】
As described above, the connection copper bar cover of the distribution board according to the present invention forms a fixing claw that can be hooked on the upper end portion of the connection copper bar, and in the vicinity of the main breaker connection portion, Reduce the insulation material used to form the all-around protection part that surrounds the front, side, and back sides, and the front cover part that covers only the front side of the connection copper bar in the parts other than the all-around protection part. Thus, the manufacturing cost can be reduced, the weight can be reduced, and the workability can be improved. Also, by reducing the part covering the connection copper bar, the heat dissipation effect can be improved and the temperature rise can be suppressed, so that excessive stress is not applied to the parts, etc., extending the product life and reliability in terms of safety Can also be sustained.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a connection copper bar covered with a connection copper bar cover according to the present invention.
FIG. 2 is a perspective view showing a connection copper bar cover according to the present invention.
FIG. 3 is a perspective view showing a connection copper bar cover in the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 R phase connection copper bar 2 S phase connection copper bar 3 T phase connection copper bar 4 Connection copper bar cover 5 Fixing claw 6 All-around protection part 7 Front cover part

Claims (1)

A connection copper bar cover for covering a connection copper bar connecting the main breaker of the distribution board and the main copper bar, and forming a fixing claw that can be hooked on the upper end of the connection copper bar, and the main breaker connection part In the vicinity, there is an all-around protection part that surrounds the front side, side face, and back side of the connection copper bar, and a front covering part that covers only the front side of the connection copper bar is provided in parts other than the all-around protection part. A connection copper bar cover characterized by being formed.

Images