JP6800525B2 - Power bus bar unit and power supply cabinet - Google Patents

Description

The present invention relates to a power bus bar unit and a power supply cabinet.

As described in Patent Document 1, there is known a DC power supply cabinet capable of supplying DC power to the equipment inside the cabinet. The DC power supply cabinet described in Patent Document 1 has a structure in which a power bus bar is arranged at a corner portion of the cabinet.

Japanese Unexamined Patent Publication No. 2013-230071

By the way, when fixing the power bus bar described in Patent Document 1, the support member, the negative electrode bar, the insulating member, and the positive electrode bar are individually fixed to the vertical frame of the cabinet in this order. For this reason, it takes time to fix the power supply unit such as the power bus bar.

The inventor of this case tried to solve this problem by diligently examining this point. An object of the present invention is to facilitate attachment of a power bus bar to a housing.

In order to solve the above problems, the following means will be adopted. The first means is a power bus bar unit including a power bus bar composed of a plurality of copper bars and a bar fixing portion for holding an end portion of the power bus bar via an insulating member, and the bar fixing portion. Is a power bus bar unit that can be attached to the horizontal frame of a cabinet whose front and rear surfaces can be opened.

In the first means, it is preferable that the intermediate portion in the longitudinal direction is provided with an intermediate bar fixing portion that can be fixed to the vertical frame of the cabinet.

Further, it is preferable that the power bus bar is provided with a divided portion that is divided in the longitudinal direction, and the intermediate bar fixing portion is configured to support the end portion of the divided portion.

Further, the first means, a housing provided with a vertical frame and a horizontal frame, and a power supply unit for supplying power to the power bus bar are provided inside the cabinet, and the power supply unit is connected to the power bus bar across the divided portions. It is preferable to use a power supply cabinet.

In the present invention, it is possible to easily attach the power bus bar to the cabinet.

It is an exploded perspective view of the cabinet and the power bus bar unit in Example 1. FIG. However, when viewed from the rear side of the cabinet, the doors and side plates forming the outer surface of the cabinet are omitted. It is a perspective view which looked at the power supply cabinet in Example 1 from the rear side. However, the door and side plate forming the outer surface of the power supply cabinet are omitted. It is a perspective view of the power bus bar unit in Example 1. FIG. It is an exploded perspective view of the power bus bar unit in Example 1. FIG. It is a partially enlarged view around the bar holding part in Example 1. FIG. It is an exploded perspective view around the intermediate bar fixing part in Example 1. FIG. It is a partially enlarged view which shows the attachment state of the intermediate bar fixing part in Example 1. FIG. It is an exploded perspective view around the bar fixing part in Example 1. FIG. It is a partially enlarged view which shows the attachment state of the bar fixing part in Example 1. FIG. It is a perspective view of the power bus bar unit in Example 2. FIG. It is an exploded perspective view of the power bus bar unit in Example 2. FIG.

A mode for carrying out the invention is shown below. As can be understood from the matters shown in FIGS. 1 to 4, the power bus bar unit 1 includes a power bus bar 11 composed of a plurality of copper bars and a bar that holds an end portion of the power bus bar 11 via an insulating member. It includes a fixing portion 12. Further, the bar fixing portion 12 is configured to be attachable to the horizontal frame 22 of the cabinet 2 whose front and rear surfaces can be opened. By using this power bus bar unit 1, it is possible to easily attach the power bus bar 11 to the housing 23. The cabinet 2 is mounted inside the power bus bar unit 1 of the present embodiment, a housing 23 having a vertical frame 21 and a horizontal frame 22, and the housing 23, and is connected to the power bus bar 11. It includes a power supply unit 24. Further, in the present embodiment, when the power bus bar unit 1 is attached to the housing 23, the power bus bar 11 is arranged inside the housing 23, and the bar fixing portion 12 is attached to the horizontal frame 22 of the housing 23. ing.

In the cabinet 2 of this embodiment, a vertical frame 21 extending in the vertical direction and a horizontal frame 22 extending in the horizontal direction are assembled so as to have a substantially rectangular shape when viewed from the back side of the cabinet 2. Further, the cabinet 2 is equipped with a power supply 24, and in this embodiment, a direct current power supply 24 capable of converting alternating current into direct current is taken as an example. The DC power supply 24 is connected to the power supply bar 11. In this embodiment, if the power supply bar 11 and the DC power supply 24 are connected by a connection portion 25 provided on the back surface of the DC power supply 24, a DC current can be supplied to the power supply bar 11. Therefore, if an electric device such as a server mounted on the cabinet 2 is connected to the power supply bar 11, a direct current can be supplied from the DC power supply 24 to the electric device via the power supply bar 11. In the example shown in FIG. 1, the DC power supply 24 is arranged in the center of the cabinet 2, but the arrangement of the DC power supply 24 can be appropriately determined.

In this embodiment, a plurality of power bus bars 11 are arranged on the rear surface side of the cabinet 2 to form a power supply cabinet, and the power bus bar unit 1 is understood from being shown in FIGS. 3 and 4. As described above, the power bus bar 11, the bar fixing portion 12, the intermediate bar fixing portion 13, and the protective cover 14 are provided. In this embodiment, since the intermediate bar fixing portion 13 attached to the vertical frame 21 extending in the vertical direction is provided in the intermediate portion of the power bus bar unit 1, the strength against the load in the left-right direction on the cabinet 2 is increased. Can be enhanced. The front side of the cabinet 2 can be opened, and a door that can be opened and closed by the user during normal use is provided. Further, on the openable rear surface side of the cabinet 2, a door for maintenance or security, which is used when the power bus bar unit 1 is attached but is not opened and closed during normal use, is provided. In this embodiment, the power bus bar 11 is arranged on the rear side of the cabinet 2, but the power bus bar 11 may be arranged on the front side of the cabinet. Further, in this embodiment, the frame of the housing 23 is configured by arranging the horizontal frame 22 at the end of the depth frame connecting the vertical frame 21 on the front surface side and the vertical frame 21 on the rear surface side. However, the horizontal frame 22 may be arranged in the middle portion of the depth frame, and the bar fixing portion 12 may be attached to the horizontal frame 22. The same applies to the vertical frame 21, and the intermediate bar fixing portion 13 may be attached to the vertical frame 21 arranged in the intermediate portion of the depth frame.

The power bus bar 11 is composed of two copper bars, each of which constitutes a positive electrode bar and a negative electrode bar. It is necessary to provide a constant insulation distance between the positive electrode bar and the negative electrode bar. Therefore, in this embodiment, as shown in FIG. 5, the insulating member 91 having a certain size is provided between the positive electrode bar and the negative electrode bar to maintain the insulating distance between the copper bars. The power bus bar 11 of this embodiment is fixed so that the longitudinal direction is the vertical direction, that is, it is parallel to the vertical frame 21 of the cabinet 2.

By the way, in this embodiment, the power bus bar unit 1 is provided so as to bridge between the horizontal frame 22 located at the upper part of the cabinet 2 and the horizontal frame 22 located at the lower part, but one copper bar. If you try to make it the corresponding length, the copper bar will be long. Therefore, in this embodiment, the power bus bar 11 is provided with the divided portion 26. That is, as shown in FIG. 4, the power bus bar unit 1 of this embodiment has two power bus bars 11 arranged one above the other. Further, the intermediate bar fixing portion 13 is configured to support the end portion of the divided portion 26 of the power bus bar 11, and the end portion of each power bus bar 11 is supported by the bar fixing portion 12 and the central bar fixing portion 13. .. With such a configuration, the length of each copper bar can be shortened, so that the bending of the copper bar can be suppressed. Further, by shortening the length of the power bus bar 11, it is possible to improve the workability of the fixing work.

Further, by connecting the power supply unit 24 so as to straddle the divided portion 26 of the power supply bus bars 11 parallel to each other in the longitudinal direction of the vertical frame 21, direct current can be supplied to the plurality of power supply bus bars 11 and one copper bar. The DC current value supplied to the can be dispersed. Therefore, the current capacity can be reduced as compared with the case of one copper bar, and the cross-sectional area of the copper bar can be reduced. By connecting the two power supply bus bars 11 arranged in parallel in the vertical direction to the connection portion 25 of one power supply unit 24, a current can be supplied to each power supply bus bar 11. At this time, if the lengths of the copper bars are the same, the same amount of current is supplied.

In this embodiment, the power bus bar 11 is attached to the cabinet 2 by using the bar fixing portion 12, which is a member used for fixing the power bus bar 11 to the frame of the cabinet 2. Further, in order to fix the intermediate portion of the power bus bar unit 1, the power bus bar unit 1 is provided with an intermediate bar fixing portion 13 attached to the vertical frame 21 of the cabinet 2.

As can be understood from FIGS. 6 to 9, the bar fixing portion 12 and the intermediate bar fixing portion 13 include a bar holding portion 16 made of an insulating member for holding the power bus bar 11 and a conductor having a risk of electric shock. It is composed of a protective portion 17 for protection and a frame fixing portion 18 fixed to the frame. It should be noted that these may all be composed of separate members, or they may all be integrally composed.

The bar holding portion 16 is fixed to the power bus bar 11 by screwing it so as to sandwich it from the outside of the power bus bar 11. The protection unit 17 is provided so as to cover the connection portion between the power bus bar 11 and the bar holding portion 16 to prevent electric shock caused by contact with the connection portion. If it can be integrated with the protective cover 14 that covers the power bus bar 11, the structure may be such that electric shock can be prevented by the integrated member.

The frame fixing portion 18 fixes the bar fixing portion 12 to the horizontal frame 22 or the vertical frame 21. As a fixing method, in the embodiment, the bar fixing portion 12 is fixed by inserting a nut into the groove provided in the frame and screwing it to the nut. The frame may be provided with screw holes and the bar fixing portion 12 may be directly screwed. Further, as long as the bar fixing portion 12 can be fixed to the frame, a method that does not use screws may be used.

The rear surface side of the power bus bar 11 is covered with a protective cover 14 to prevent electric shock due to contact with the power bus bar 11. The protective cover 14 of this embodiment is formed in a U-shaped cross section and covers a portion other than the front surface of the power bus bar 11. A DC power supply 24 and electrical equipment are connected from the front side of the protective cover 14. A slit is provided on the rear surface of the protective cover 14 to prevent the temperature of the copper bar from rising due to energization. Further, the protective cover 14 is fixed to the bar fixing portion 12.

In the first embodiment, the case where the power bus bar unit 1 is one is described. However, as in the second embodiment shown in FIG. 10, a structure in which a plurality of power bus bar units 1 are provided on the rear surface side of the cabinet 2 is also assumed. In the case of this embodiment, the length of the bar fixing portion 12 in the left-right direction is increased, and the number of power bus bars 11 that can be held can be a plurality. Further, in this embodiment, as shown in FIG. 11, the power bus bar 11 can be attached to and detached from the bar fixing portion 12, and the power bus bar 11 can be one. The bar fixing portion 12 of the present embodiment is not different from the fixing portion of the first embodiment in the basic structure including the bar holding portion 16, the protecting portion 17, and the frame fixing portion 18.

Although the embodiments have been described with reference to the two embodiments, the present invention is not limited to the above embodiments and can be various modes. For example, the power bus bar unit can be arranged so as to be biased to either the left or right side of the housing.

In the embodiment, the bar fixing portions provided at the upper and lower ends of the power bus bar are attached to the horizontal frame of the cabinet, but the bar fixing portions may be attached only to the vertical frame, or the vertical frame and the horizontal frame. It may be attached to both.

In the embodiment, the structure in which the power supply unit is connected so as to straddle the divided portion of the power bus bar is shown. However, for example, even if the power bus bar is provided with two divided portions and the three power bus bars are arranged one above the other. I do not care. In such a configuration, the power supply unit may be connected to each of the three power bus bars, or the power supply unit may be connected to the uppermost power bus bar of the three and the lower division of the two. By connecting a power supply unit to one power bus bar and one division, the current value may be different for each power bus bar. In the latter configuration, connect devices that require power to the power bus bar that has a one-to-one correspondence with the power supply unit, and connect devices that require low power to the power bus bar that does not. It is possible to have such a configuration, and efficient use is possible.

1 Power bus bar unit 2 Cabinet 11 Power bus bar 12 Bar fixing part 13 Intermediate bar fixing part 21 Vertical frame 22 Horizontal frame 23 Housing 24 Power supply unit 26 Divided part

Claims (2)

A power supply bus bar composed of a plurality of copper bars, comprising a bar fixed portion of the end portion of the power bus bar is held via an insulating member, a lateral frame of the openable cabinet bar fixing portion of the front and rear surfaces It is a power bus bar unit that can be attached to
An intermediate bar fixing part that can be fixed to the vertical frame of the cabinet is provided in the middle part in the longitudinal direction.
The power bus bar includes a split portion that divides in the longitudinal direction, and the intermediate bar fixing portion is a power bus bar unit that supports the end portion of the split portion . The power bus bar unit according to claim 1 , a housing provided with a vertical frame and a horizontal frame, and a power supply unit for supplying power to the power bus bar are provided inside the cabinet, and the power supply unit is attached to the power bus bar across the divided portions. Connected power supply cabinet.

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