JPH069411Y2 - Disconnector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a disconnector.

[Conventional technology]

Normally, in a disconnector, which is one of the cubicle storage devices, a power supply side and a load side before and after the disconnection are separated by a partition wall or the like for safety and prevention of accident ripple.

For example, in the conventional disconnector shown in FIG. 3, the disconnector storage space between the front and rear cubicle partition walls (1a), (1b) is separated into an upper power supply side chamber (2) and a lower load side chamber (3). A disconnector frame (4) is used as a partition wall.
A through bushing (5) is loosely inserted into (4) and supported rotatably around a support shaft (6), and movable contacts (5) are respectively attached to the upper and lower ends of the through conductor (7) of the bushing (5). 8) and (8) 'are provided, while the fixed contactor (10) is fixed to the supporting insulators (9) and (9)' fixed to the frame (4) in the power source side chamber (2) and the load side chamber (3), respectively. ), (10) 'are supported, and both movable contacts (8), (8)' are brought into contact with and separated from both fixed contacts (10), (10) 'in accordance with the rotation of the through bushing (5). , Fixed contact (10) of power supply side chamber (2)
Fixed contact (10) ′ of the power supply side and load side chamber (3) connected to
It is configured to turn on and off the load side connected to.

In another disconnector shown in FIG. 4, the disconnector housing space between the front and rear cubicle partition walls (11a) and (11b) is used as a power source side chamber.
Another cubicle bulkhead (14) is used to separate the (12) and the load side chamber (13), and the disconnector frame (15) is fixed to one of the bulkheads (11) in the power source side chamber (12). , And support insulators (17), (17) 'that respectively support the power source side fixed contactor (16) and the load side fixed contactor (16)' are integrally provided on the fixed contactor (17) '. Sliding contact movable contact (18)
An insulating operation lever (19) for vertically moving and contacting and separating the fixed contactor (16) is rotatably supported by the frame (15), and further, a through bushing (20) penetrating the partition wall (14). The through conductor (21) is connected to the fixed contact (16) 'by the connecting conductor (22) in the power supply side chamber (12), and the movable contact (18) moves up and down by the rotation of the lever (19). The ON / OFF operation is performed by.

Although FIG. 3 and FIG. 4 each show one phase, they are arranged in three phases in the left-right direction (front-back direction of the drawing).

[Problems to be solved by the invention]

By the way, in a cubicle that stores various electric devices, in order to miniaturize it, it is required to downsize the cubicle storage device, but normally, the disconnector is an aerial type because of the feature of the device that visually confirms the disconnection. In most cases, it is difficult to reduce the size in the left-right direction (interphase direction) because it is necessary to ensure a predetermined interphase insulation dimension.

Therefore, reducing the depth dimension and height dimension of the disconnector is extremely effective in reducing the size of the cubicle.

However, in the case of the above-mentioned prior art, the one shown in FIG. 3 rotates the through bushing (5) to perform the on / off operation,
Before and after the bushing (5), the fixed contacts (10), (10) 'that come into contact with and separate from the movable contacts (8), (8)' must be arranged, which requires a large space in the depth direction. And again,
In the structure shown in FIG. 4, the movable contactor (18) is moved in and out by linear movement up and down, so that the depth dimension can be reduced, but a through bushing (14) is provided in the partition wall (14) for separating before and after the disconnection. 20) is especially required, and there is a problem that a large space is required in the height direction, which makes it difficult to miniaturize the cubicle.

[Means for solving problems]

The present invention is intended to reduce the depth and height of the disconnector housing space while paying attention to the above-mentioned problems, and it is provided in a cylindrical shape penetrating the partition between the power supply side chamber and the load side chamber. A through bushing having a through conductor internally provided therein, a movable contactor that linearly moves while slidingly contacting the inside of the through conductor, a tip is connected to the movable contactor, and the movable contactor is linearly moved to make a fixed contact. It is provided with a rotatable insulating operation lever that is brought into contact with and separated from the child.

[Action]

Therefore, in the disconnector of the present invention configured as described above, when the insulating operation lever is rotated, the movable contactor connected to the insulating contact lever slides in contact with the inside of the tubular through conductor of the through bushing. However, since it moves linearly and comes in contact with and separates from the fixed contactor, the movable contactor moves linearly in the through bushing penetrating the partition wall to perform the on / off operation.

〔Example〕

Next, this invention will be described in detail with reference to FIGS. 1 and 2 showing one embodiment thereof.

In these drawings, (23a) and (23b) are cubicle partition walls before and after forming a disconnector housing space in the cubicle, 24 is a disconnector base fixed to one partition wall (23a), and (25) is It is a horizontal disconnector frame that is integrally provided on the base (24) and serves as a partition wall that separates the disconnector housing space into the upper power supply side chamber (26) and the lower load side chamber (27).
(23a), (23b), the base (24) and the frame (25) are grounded.

Reference numeral (28) is a through bushing vertically extending through the frame (25). As shown in FIG. 2, a cylindrical through conductor (30) is penetrated through the insulating bushing body (29). The bushing body (29) has a recess (3
The upper end of the through conductor (30) is introduced into the inside of (1), and the lower end of the through conductor (30) is led out from the lower end surface of the bushing body (29).

(32) is a hollow or solid round bar-shaped movable contact in the up-and-down direction, which is loosely inserted into the through conductor (30) of the through bushing (28), and in the recess (31) of the bushing body (29). The movable contact (32) is elastically contacted with the fixed contact piece (33) connected to the through conductor (30), and the movable contact (32) passes through the through conductor (30).
It is designed to move straight up and down while sliding on.
A guide body (34) slidably contacting the inner surface of the through conductor (30) is provided at the lower end of the movable contactor (32).
2) is vertically movably guided by a through conductor (30) via a fixed contact piece (33) and a guide body (34).

(35) is a support insulator (3) fixed to the upper part of the disconnector base (24).
There is provided a contact piece (35) 'supported by 6) and located directly above the movable contactor (32), which is in contact with and separates from the movable contactor (32). Reference numeral (37) denotes an insulating operation lever rotatably supported below the support insulator (36) of the disconnector base (24), and the movable contactor (32) is provided in the long hole (38) at the tip of the lever (37). ), The connecting pin (39) is loosely fitted, and the lever (37) is turned up and down by a drive mechanism (not shown), so that the movable contactor (32) is attached to the through conductor (30). It moves up and down while making sliding contact, and comes in contact with and separates from the fixed contact (35).

The fixed contactor (35) supported by the support insulator (36) is connected to the power source side, and the through conductor (30) led out from the lower end of the through bushing (28) is connected to the load side.

Although only one phase is shown in FIG. 1, this structure is arranged in three phases in the left-right direction.

[Effects of the Invention] As described above, according to the disconnector of this invention, the movable contactor is
Since it is possible to move the (32) linearly and bring it into contact with and separate from the fixed contactor (35) to form a so-called straight line disconnecting switch, as in the case shown in FIG. Since the reduction in the depth direction can be achieved, the movable contactor (32) can be linearly movably supported and stored in the through conductor (30) of the through bushing (28) while slidingly contacting the conductor (30). Since the disconnector and the through bushing shown in FIG. 4 can be integrated, the height can be significantly reduced, and the disconnector can be significantly downsized. There is an effect that it is possible to downsize the cubicle in which this type of disconnector is housed with the front and rear of the disconnection isolated.

Further, according to the above-mentioned embodiment, since the movable contactor (32) which moves linearly is guided by the penetrating conductor (30) of the penetrating bushing (28), a linear movement mechanism for performing this kind of guiding is particularly required. Therefore, there is an effect that the structure can be simplified and the space can be saved.

In the embodiment, the movable contactor (32) is divided into a solid round bar shape and a hollow round bar shape, so that there is an effect that other components can be commonly used to cope with the magnitude of the allowable current.

[Brief description of drawings]

1 and 2 show one embodiment of the disconnecting switch of the present invention. FIG. 1 is a sectional side view of the whole, FIG. 2 is a sectional view of a through bushing, and FIGS. It is a cutting side view of the disconnector of FIG. (25) ... disconnector frame, (26) ... power supply side chamber, (27) ... load side chamber, (28) ... through bushing, (30) ... through conductor, (32) ... movable contact, (35) ... fixed contact Child, (37) ... Insulated operating lever.

Claims (1)

[Scope of utility model registration request] 1. A through bushing in which a cylindrical through conductor is provided so as to penetrate through a partition wall between a power source side chamber and a load side chamber, a movable contactor which moves linearly while slidingly contacting the inside of the through conductor, and a tip. A disconnecting switch which is connected to the movable contactor and is rotatable to move the movable contactor linearly to move the movable contactor in and out of contact with the fixed contactor.