JP6424342B2 - Power supply structure of trunk bar - Google Patents

Description

  The present invention relates to a power supply structure of a trunk bar used in a plug-in type distribution board.

  A plug-in type with a structure in which a plurality of trunk bars are arranged vertically with respect to the panel surface, mounting rails are arranged on both sides of the trunk bars, and breakers can be easily inserted and removed from these trunk bars. The electric board is widely used because it is easy to add or remove a breaker and is excellent in construction.

  In general, in the case of a distribution board, there may be a case where “power feed” is required to connect an electric wire to the end of the trunk bar and supply power to devices other than the branch breaker connected on the trunk bar. In order to meet this demand, conventionally, the end portion of the trunk bar is protruded from the end surface of the mounting rail as in Patent Document 1 to form a power supply connection portion, and power supply is performed. However, since the power feed connection is exposed and exposed beyond the end face of the mounting rail, a dedicated cover for protecting the power feed connection has been required.

  Further, in the structure of this patent document 1, it is preferable to cut this projecting portion in order to eliminate the waste of space due to the protruding main bar when power feeding is unnecessary and for the purpose of extra cutting work. And waste of the material of the copper bar.

  In order to solve the above problems, a terminal block having a power supply function as shown in Patent Document 2 may be used. However, in addition to the problem of an increase in the number of parts due to the terminal block, there is also a problem that the insulation distance becomes smaller and the large electric wire can not be connected because the terminal seat approaches the conductive portion such as the door than the trunk bar.

JP, 2005-312267, A JP 2012-161175 A

  Accordingly, the object of the present invention is to solve the above-mentioned conventional problems, and to provide a power supply structure of a trunk bar capable of performing power supply without increasing the number of parts and without lowering safety and insulation. It is to be.

The present invention, which has been made to solve the above-mentioned problems, has a plurality of trunk bars arranged vertically to a board, and a pair of left and right attachment rails for attaching a device to be plugged in to the trunk bars. And a power supply structure of the trunk bar in which a power supply connection portion for supplying power to devices other than the branch breakers connected on the trunk bar is provided at an end portion of each trunk bar, A fixing hole is formed in the connecting portion, the fixing hole is formed inside the longitudinal end face of the mounting rail , and a rear bar holder for holding the rear portion of the trunk bar does not have a power feed connection portion. It is characterized in that it is provided at a position .

The invention of claim 2 is characterized in that in the invention of claim 1, the power supply feed connection portion is formed at substantially the same position as the end face in the longitudinal direction of the mounting rail. Oite invention of claim 3 is the invention of claim 2, the front bar holder for holding the front of the trunk line, is characterized in that provided at a position of the end surface side of the mounting rail of a rear bar holder . The invention of claim 4 is characterized in that, in the invention of claim 3 , the front bar holder is provided at the same position as the power feed connection portion.

According to the present invention, since the power supply connection portion of the trunk bar is formed inside the end surface of the mounting rail in the longitudinal direction, the power supply connection portion does not protrude outside, and it is not necessary to provide a dedicated cover. Therefore, the number of parts can be reduced. In addition, since the terminal block is not used, the number of parts can be reduced. In addition, there is no protrusion of the trunk bar from the mounting rail, and the space in the board can be expanded. Further, according to the present invention, since the rear bar holder for holding the rear of the trunk bar is provided at a position without the power feeding connection, the rear bar holder is moved when switching from the state without power feeding to the state with power feeding. There is no need to

  According to the second aspect of the present invention, since the power supply feed connection portion is formed at substantially the same position as the end surface in the longitudinal direction of the mounting rail, the mounting space of the device can be secured to the maximum within the range of the mounting rail.

According to the invention of claim 3 , since the front bar holder is provided at a position closer to the end face of the mounting rail than the rear bar holder, the mounting space of the device can be enlarged.

According to the invention of claim 4 , since the front bar holder is provided at the same position as the power feeding connection portion, the mounting space of the device can be enlarged.

It is a whole perspective view showing an embodiment of the present invention. It is a principal part enlarged view of FIG. It is the top view except a protective plate. It is a perspective view which shows the state (pattern 1) of a power supply sending part unused. It is a perspective view which shows the state (pattern 2) of a power supply sending part unused.

  Hereinafter, embodiments of the present invention will be described. In the present specification, the board side (lower side of each drawing) is referred to as rear, and the near side (upper side of each drawing) is referred to as front.

  1 and 2 are perspective views showing an embodiment of the present invention, and FIG. 3 is a plan view thereof. In these figures, reference numeral 1 denotes a plurality of trunk bars arranged perpendicularly to the board. These trunk bars 1 are preferably copper bars, the rear of which is supported by the rear bar holder 2. As shown in FIG. 5, the rear bar holder 2 is provided with a plurality of recesses 3 for holding the trunk bars 1, and the rear portions of the trunk bars 1 are stably held in the recesses 3.

  On the front surface of these trunk bars 1, as shown in Patent Document 1, a breaker is plugged in, or an adapter on which the breaker is mounted is plugged in. Reference numeral 4 denotes a pair of left and right mounting rails for mounting a device to be plugged in to the trunk bar 1. The mounting rails 4 are members having a U-shaped cross section installed on both sides of the trunk bar 1, and screw holes 6 are formed at a predetermined pitch on the mounting surface 5 at the front. The base of the device to be plug-in connected is screwed into these screw holes 6, but in order to eliminate the exposure of the trunk bar 1 in the part where the device is not attached, the insulating protective plate 7 is used as before. It is attached.

  At the end of each trunk bar 1 is formed a power feeding connection 8 for feeding power to another distribution board or breaker or the like. The power feeding connection portion 8 is formed with a fixing hole 10 for bolting a crimped terminal of a power feeding wire or a copper bar. In the present invention, the power feed connection portion 8 is formed inside the end surface 9 in the longitudinal direction of the mounting rail 4. As shown in FIGS. 2 and 3, the end face of the trunk bar 1 is substantially flush with the end face 9 of the mounting rail 4, and the power feed connection portion 8 is also substantially flush with the end face 9 of the mounting rail 4 in the longitudinal direction. It is formed in the same position. However, as a matter of course, the position of the fixing hole 10 is slightly inside the end surface 9 of the mounting rail 4.

  As shown in FIG. 1, a front bar holder 11 is attached to the attachment surface 5 of the attachment rail 4. The front bar holder 11 is a member whose front ends are screwed to the mounting surface 5 and, as shown in FIG. 5, a plurality of members for fitting and holding the front of the trunk bar 1 on the rear surface The concave groove 12 is formed. For this reason, the trunk bar 1 is reliably held from both sides by the rear bar holder 2 and the front bar holder 11.

  As described above, in the present invention, the power feed connection portion 8 is formed inside the end surface 9 of the mounting rail 4, so the power feed connection portion 8 is utilized by using the insulating protective plate 7 conventionally used. Can protect the front of the car. For this reason, a dedicated cover for protecting the power feed connection portion 8 as in the prior art is not necessary, and the number of parts can be reduced. Further, both the left and right sides of the power feed connection portion 8 can be protected by the mounting rail 4.

  Moreover, it is not necessary to make the end of the trunk bar 1 project from the end face 9 of the mounting rail 4 as in the prior art, and the space in the board of the distribution board can be expanded. In other words, in the distribution board, it is rare that the entire mounting surface 5 of the mounting rail 4 is used without excess, and in many distribution boards, the size due to the difference in the number of mounted breakers and the rating The mounting surface 5 has some allowance in consideration of the difference and the like. In the present invention, the power feed connection portion 8 is provided in the space of the mounting surface 5 so that the power feed connection portion 8 does not protrude from the mounting surface 5. Therefore, the trunk bar 1 can be shortened more than before by that amount, and waste of material can also be reduced.

  In the state where the power feeding unit is not used, the arrangement of pattern 1 shown in FIG. 4 and pattern 2 shown in FIG. 5 can be taken. In the pattern 1 shown in FIG. 4, the front bar holder 11 is attached at a position to hold the front of the power supply connection portion 8 of the trunk bar 1. However, the rear bar holder 2 is arranged inside the power feed connection 8. Such an arrangement has the advantage that the mounting surface 5 of the mounting rail 4 can be fully utilized and there is no need to move the rear bar holder 2 when the power feed connection 8 is to be used.

  In the pattern 2 shown in FIG. 5, both the front bar holder 11 and the rear bar holder 2 are disposed at positions where the power supply connection portion 8 of the trunk bar 1 is held. This arrangement is an arrangement in which the rear bar holder 2 is moved to the end side in order to avoid interference with the rear bar holder 2 when it is intended to plug in a breaker or an adapter in the vicinity of the end of the mounting rail 4. When the power feeding connection portion 8 is to be used, the front bar holder 11 and the rear bar holder 2 are moved and used as shown in FIG.

  As described above, according to the power supply structure of the trunk bar of the present invention, it is possible to perform the power supply without increasing the number of parts and without lowering the safety and the insulation.

DESCRIPTION OF SYMBOLS 1 Main trunk bar 2 Rear bar holder 3 Recess 4 Mounting rail 5 Mounting surface 6 Screw hole 7 Protective plate 8 Power feed connection part 9 End surface 10 Fixing hole 11 Front bar holder 12 Concave groove

Claims (4)

A plurality of trunk bars arranged vertically to the panel and a pair of left and right mounting rails for attaching a device to be plugged in to the trunk bars, the trunk bar at the end of each trunk bar A power supply structure of a trunk bar having a power supply connection portion for supplying power to devices other than the branch breakers connected to the upper side, and a fixing hole is formed in the power supply connection portion of these power supply connection portions A power supply for a trunk bar is characterized in that a hole is formed inside the longitudinal end face of the mounting rail , and a rear bar holder for holding the rear of the trunk bar is provided at a position without a power supply connection. Construction.   The power supply structure for a trunk bar according to claim 1, wherein a power supply connection portion is formed at substantially the same position as an end surface of the mounting rail in the longitudinal direction. The power supply structure for a trunk bar according to claim 2, wherein a front bar holder for holding a front portion of the trunk bar is provided at a position closer to the end face of the mounting rail than the rear bar holder . The power supply structure for a trunk bar according to claim 3, wherein the front bar holder is provided at the same position as the power supply connection portion .

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