JPS6074906A - Device for disconnecting assembled switchboard - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a control center, etc.
This article relates to the craftsmanship of the catfish, and in particular to the structure of the disconnecting device.

[Behind the invention]

In general, a collective switchboard has a configuration in which the control devices and circuit breakers for the motors are grouped together to form a unit switchboard, and these multiple unit switchboards are stacked and stored together. . Further, the primary side and secondary side of each unit switchboard are connected to a common power supply bus and a load lead-out terminal, respectively, in a detachable manner.

Figures 1 and 2 are examples of such collective switchboards.
A device configured as shown in the figure is known. Figure 1 is an internal front view of one unit distribution board of the collective switchboard.
FIG. 2 is a side view thereof.

As shown in FIG. 1, the inside of the casing 1 is divided by a vertically disposed frame 2 into a storage section for housing a unit switchboard (hereinafter simply referred to as a unit) and a wiring processing chamber 3. Inside this wiring processing chamber 3, wiring for the secondary side main circuit and control circuit of the unit, etc. are housed. Further, the unit storage section is vertically divided by a plurality of partition plates 4 fixedly provided between the side surface of the casing 1 and the frame 2, and a plurality of unit storage chambers 5 are formed. . Each unit storage chamber 5 stores a unit 6, respectively. The partition plate 4 has a U-shaped cross section, and rails 7 are fixedly provided on both edges in the word width direction at the upper part of the partition plate 4 and extend in the board depth direction. 6 can be placed.

A blade support 8 is provided on the bottom surface (C) of the partition plate 4. Inside the blade support 8, there are three blades 9 of different lengths extending from the center part to the wiring processing chamber 3. An insertion section 9A is formed by bending one end of the blade 9 in the vertical direction, and can be inserted into a clip 10 provided on the lower surface of the unit 6. The end is external drawer terminal 9B
The load wiring 11 is connected by a bolt or the like. On the other hand, as shown in FIG. 2, a vertical busbar 13 covered with an insulating tube 12 is arranged in the rear side of the unit storage chamber 5 in the vertical direction. This common power supply bus 13 is supported by a support metal fitting 14 fixed to the casing 1 and the frame 2, and a bus bar support stand 15 attached to this support metal fitting 14.

A hardwire circuit breaker 16 is attached to the inside of the back of the unit 6. The primary wiring of the molded case circuit breaker 16 is connected to terminals 18 arranged in a row on a support base 17 attached to the rear surface of the unit. The terminal piece 8 is connected to a blade 19 provided protruding from the back surface of the support base 17. The blade 19 is connected to the common power supply bus 13 in a detachable manner. In other words, the blade 19 is
A primary disconnection section is formed by using the secondary movable contact and the common power supply bus 13 as the primary fixed contact. On the other hand, the secondary side of the molded circuit breaker 16 is connected to terminals 21 of a support base 20 provided on the bottom of the unit. This terminal 2
1 is connected to the clip 10 formed to engage with the vertical portion 9A of the blade 9, and this clip 10 is attached to the support base 20. The pick, the clip 10 as a secondary movable contact, the blade hanging,
A secondary disconnector is formed using the official residence 9A as a secondary fixed contact. Therefore, by inserting the unit 6 into the unit storage chamber 5, the blade 19 is inserted into the common IT source bus 1.
At the same time, the clip 10 is connected to the vertical portion 9A of the blade 9 so that the primary disconnection portion and the secondary disconnection portion are respectively closed. In addition,
In FIG. 2, numeral 34 indicates the sin of the unit.

However, in the conventional device configured as described above, the blade 9 provided at the bottom of the unit storage chamber 5 is fixed to the partition plate 4 with screws or the like via the support base 8 made of an insulating material. Therefore, if the manufacturing accuracy and installation accuracy are not satisfied, there is a drawback that the prisoner's residence 9A and the clip 10 cannot be engaged with each other. Furthermore, since the blade 9 has a large shape and a large number of parts, it requires a large number of man-hours for installation and is not economical.

[Purpose of the invention]

An object of the present invention is to provide a disconnecting device for a collective switchboard made of groove construction, which can reduce the manufacturing and installation accuracy of a secondary disconnecting section, and can simplify the configuration and improve economic efficiency. .

[Summary of the invention]

The present invention reduces manufacturing accuracy and installation accuracy, and simplifies the configuration and improves economic efficiency by integrally forming the primary disconnecting section and the secondary disconnecting section on the back of each unit switchboard. It is something that we are trying to improve.

[Embodiments of the invention]

The present invention will be explained below based on an embodiment shown in FIGS. 3 to 6. In these figures, parts having the same functions and configurations as those of the conventional example shown in FIGS.

3 is a front view, FIGS. 4 and 4 are side views, FIG. 5 is a plan view of the disconnecting device, and FIG. 6 is a front view thereof.

As shown in FIG. 5, a common power supply bus 13 forming an intermittent constant contact, and a blade 22 forming a secondary fixed contact.
The support stand 23, which integrally supports the above, is divided into two upper and lower parts 123A and 23B in the figure. And these two members 23A.

The common source bus 13 is held between the 238 and fixed to the inner frame 24 of the housing 1 with screws 25.

The blade 22 has a load extraction terminal 2 on the back side of the member 23A.
7 and is provided through the support stand 23 so that the other end protrudes toward the unit 6 side, and the member 2
It is fixed at 3A.

On the other hand, a support base 29 supports the blade 19 as a primary movable contact and the clip 28 as a secondary movable contact.
is fixed to the back of the unit 6 with screws 30. The blade 19 and the clip 28 are connected to the common power supply bus 1, respectively.
3 and the blade 22, and are integrally attached to the support stand 29. Note that the clip 28 is formed of two contacts so as to sandwich the blade 22, and each is pressed by a spring 31 from the back side.

The primary side of the circuit breaker 16 is connected to the terminal 18 formed on the blade 19 by a wire 32, and the secondary side is connected by inserting a contact piece 337V attached to the tip of the wire 33 into the clip 28. It is supposed to be done. Further, as shown in FIG. 4, the load wiring 11 is connected to a terminal 27 of the blade 22.

As described above, according to this embodiment, since the primary disconnection section and the secondary disconnection section, which require high manufacturing accuracy and installation accuracy, are integrally formed, it is possible to easily satisfy manufacturing accuracy. At the same time, the mounting accuracy can be significantly reduced. In addition, compared to the conventional examples shown in Figures 1 and 2, the blades on the secondary side can be significantly downsized, and the number of supports and related parts that support them can be reduced, making it possible to reduce the number of times the unit can be used 6 times. This simplifies system configuration and increases available space.
Moreover, there is an effect that the number of installation steps can be significantly reduced.

Still, according to the above embodiment, the support base 23 that supports the common power supply bus 13 and the blades 22, which are the primary and secondary fixed contacts, also serves as a support base that supports all one common power supply bus 13. Figures 1 and 2
Compared to the conventional example shown in the figure, the number of parts can be further reduced and the number of installation steps can be reduced.

[Effects of the Invention] As explained above, the present invention has the effect of simplifying the configuration of the disconnecting section, reducing manufacturing accuracy and handling accuracy, and improving economic efficiency. .

[Brief explanation of drawings]

FIG. 1 is a front view of the conventional example, FIG. 2 is a side view of the conventional example, FIG. 3 is a front view of an embodiment of the present invention, FIG. 4 is a side view of the illustrated embodiment in FIG. FIG. 3 is a detailed plan view of a main part of the illustrated embodiment, and FIG. 6 is a front view of FIG. 5. 6... Unit switchboard, 13... Common power bus, 1
9...Blade, 22...Blade, 23...Support stand, 228...Clip, 29...Support stand. Agent Patent Attorney Tatsuri Unuma I ノ ■; SE] 1' q 2nd b 3rd mouth

Claims (1)

[Claims] 1. A primary fixed contact provided for each of the plurality of unit switchboards and connected to a common power supply bus, and a primary movable contact provided on each of the unit switchboards facing the primary fixed contact. A disconnecting device for a collective switchboard, comprising a primary disconnecting section consisting of a secondary disconnector, and connecting the unit switchboard and the common power supply bus through the disconnecting section in a freely insertable and removable manner,
B-factor determining contacts connected to external lead-out terminals are arranged in a row on a support base that insulates and supports the primary fixed contact;
The secondary movable contacts of the unit switchboard are arranged in rows on a support base that supports the primary contacts for electrification, facing the secondary fixed contacts. Features of Togane switchboard disconnect device.