CN219066726U

CN219066726U - Circuit breaker base structure

Info

Publication number: CN219066726U
Application number: CN202222921393.2U
Authority: CN
Inventors: 杜吟; 侯魁; 刘丰丰; 韩云; 潘璇; 王�忠
Original assignee: Jiangsu Daquan Kaifan Switch Co ltd
Current assignee: Jiangsu Daquan Kaifan Switch Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-05-23
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses a base structure of a circuit breaker, which comprises an arc striking strip, a fixed contact assembly, a plurality of fasteners, a bottom plate and an insulating column, wherein the fixed contact assembly can be firmly installed on the bottom plate and can bear large fault current, the fastening work in the horizontal direction and the vertical direction is realized through the fasteners respectively, the arc striking strip can be conveniently installed on the fixed contact assembly, the replacement is convenient, and the equipotential can be ensured.

Description

Circuit breaker base structure

Technical Field

The utility model relates to the field of circuit breakers, in particular to a base structure of a circuit breaker.

Background

In a low voltage breaking universal circuit breaker, an arc striking bar is a key component for introducing an arc into an arc extinguishing chamber. In the direct current arc extinguishing technology, the lifting of the arcing voltage is a key element of arc extinguishing, so that more arc extinguishing grid plates are needed, and meanwhile, a longer arc striking strip is needed, so that the arc can be pulled longer, the optimal arc extinguishing effect is achieved, and the stable fixation of the static contact assembly can be realized only by improving the design of the static contact assembly and the arc striking strip and the installation layout of the static contact assembly, and the static contact assembly can bear large fault current.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a base structure of a circuit breaker, so as to solve the problems.

In order to achieve the above object, the present utility model is achieved by the following technical scheme.

The utility model provides a circuit breaker base structure, includes arc striking strip, static contact subassembly, a plurality of fastener, bottom plate, insulating column, the static contact subassembly is pegged graft with the bottom plate, and is fixed through the fastener, the static contact subassembly includes static arc contact, static line row, static contact and static line row welding, static arc contact and static line row welding, the width of static arc contact is 1/4 ~ 3/4 of static contact width, the height of static arc contact is 2 ~ 6 times of static contact height, arc striking strip and bottom plate peg graft, and one end and static contact subassembly are with fastener fixed connection, insulating column one end is fixed on the bottom plate through the fastener, and the other end passes through fastener and static line row fixed connection, and static contact subassembly can install on the bottom plate firmly, can bear big fault current, realizes the fastening work of horizontal direction and vertical direction through the fastener respectively, and the arc striking strip can be convenient install to the static contact subassembly, and change is convenient, and can guarantee equipotential.

Preferably, the bottom plate and the fixed contact assembly are both L-shaped.

Preferably, the fastening members include a first fastening member, a second fastening member, a third fastening member, a fourth fastening member, and a fifth fastening member.

Preferably, the first fastener is horizontally fixed on the bottom plate through the static arc contact.

Preferably, the static wire row is spliced with the bottom plate, and the second fastener passes through the spliced part to be connected with the static wire row.

Preferably, the third fastener is a stud, one end of the third fastener is fixedly connected with the bottom plate, the other end of the third fastener is connected with the insulating column, and an adaptive thread or an embedded insert is arranged inside the bottom plate at the position corresponding to the bottom plate.

Preferably, the fourth fastener passes through the fixed contact assembly and is fixed on the insulating column.

Preferably, the fifth fastener passes through the arc striking strip to fix the arc striking strip on the static arc contact.

Preferably, the arc striking strip is consistent with the fixed end of the static arc contact in width.

Preferably, the width of the static arc contact is 2/4 of the width of the static contact.

Preferably, the height of the static arc contact is 4 times of the height of the static contact.

Compared with the prior art, the utility model discloses a base structure of a circuit breaker, which comprises an arc striking strip, a fixed contact assembly, a plurality of fasteners, a bottom plate and an insulating column,

(1) the static contact assembly can be firmly installed on the bottom plate, can bear large fault current, and can realize fastening work in the horizontal direction and the vertical direction through fasteners respectively;

(2) the arc striking strip can be conveniently installed on the fixed contact assembly, is convenient to replace, and can ensure equipotential.

Drawings

Fig. 1 is a schematic view of an explosion structure of a base structure of a circuit breaker according to the present utility model;

fig. 2 is a schematic diagram of an exploded view of a circuit breaker base structure of the present utility model;

fig. 3 is a schematic structural view of a circuit breaker base structure of the present utility model;

fig. 4 is a front view of the structure of the base of the circuit breaker of the present utility model;

fig. 5 is a structural rear view of the circuit breaker base structure of the present utility model;

fig. 6 is a structural cross-sectional view of the base structure of the circuit breaker of the present utility model;

fig. 7 is a structural cross-sectional view of the circuit breaker base structure of the present utility model;

fig. 8 is a structural cross-sectional view of the base structure of the circuit breaker of the present utility model;

FIG. 9 is a schematic view of the structure of the stationary contact assembly of the present utility model;

fig. 10 is a schematic structural diagram of the static contact assembly according to the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

The base structure of the circuit breaker comprises an arc striking strip 1, a static contact component 2, a plurality of fasteners, a bottom plate 4 and an insulating column 5, wherein the static contact component 2 is inserted into the bottom plate 4 and fixed by the fasteners, the static contact component 2 comprises a static arc contact 201, a static contact 202 and a static outlet line 203, the static contact 202 is welded with the static outlet line 203, the static arc contact 201 is welded with the static outlet line 203, the width of the static arc contact 201 is 1/4-3/4 of the width of the static contact 202, the height of the static arc contact 201 is 2-6 times of the height of the static contact 202, the width a of the static arc contact 201 is 1/4-3/4 of the width b of the static contact 202 as shown in figure 10, the height c of the static arc striking contact 201 is 2-6 times of the height d of the static contact 202, the arc striking strip 1 is inserted into the bottom plate 4, one end of the static arc striking strip is fixedly connected with the static contact component 2 by the fasteners, one end of the insulating column 5 is fixed on the bottom plate 4 through a fastener, the other end of the insulating column is fixedly connected with the static wire row 203 through a fastener, the bottom plate 4 and the static contact assembly 2 are all L-shaped, the fastener comprises a first fastener 3, a second fastener 6, a third fastener 7, a fourth fastener 8 and a fifth fastener 9, the first fastener 3 penetrates through the static arc contact 201 to be horizontally fixed on the bottom plate 4, the static wire row 203 is spliced with the bottom plate 4, the second fastener 6 penetrates through the splicing position to be connected with the static wire row 203, the third fastener 7 is a stud, one end of the third fastener is fixedly connected with the bottom plate 4, the other end of the third fastener is connected with the insulating column 5, an adaptive thread or an embedded insert is arranged inside the bottom plate 4 at the corresponding connection position with the bottom plate 4, the fourth fastener 8 penetrates through the static contact assembly 2 and is fixed on the insulating column 5, the fifth fastening piece 9 penetrates through the arc striking strip 1 to fix the arc striking strip 1 on the static arc contact 201, the width of the arc striking strip 1 is consistent with the fixed end width of the static arc contact 201, the width of the static arc contact 201 is 2/4 of the width of the static contact 202, and the height of the static arc contact 201 is 4 times of the height of the static contact 202.

The installation mode is as follows:

the bottom plate 4 at the corresponding connection position of the third fastening piece 7 and the bottom plate 4 is internally provided with an adaptive thread or an embedded insert, firstly, one end of the third fastening piece 7 is fixed on the bottom plate 4, then one end of the insulating column 5 is connected with the other end of the third fastening piece 7, after the static contact assembly 2 is inserted in place, the first fastening piece 3 penetrates through the static arc contact 201 to fix the horizontal direction of the static contact assembly 2 on the bottom plate 4, the fourth fastening piece 8 penetrates through the static line row 203 to fixedly connect the insulating column 5, the second fastening piece 6 penetrates through the inserting position to be connected with the static line row 203, and the penetrating position is in fact a groove body preset on the bottom plate 4 in advance and used for limiting the second fastening piece 6 and connecting with the static line row 203, the arc striking strip 1 and the static arc contact 201 are fixedly connected through the fifth fastening piece 9, the equipotential is kept, and meanwhile, the other end of the arc striking strip 1 can be preset hole positions according to requirements and can be fixed on the bottom plate 4 at the same time.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A circuit breaker base structure, its characterized in that: including striking strip (1), static contact subassembly (2), a plurality of fastener, bottom plate (4), insulating column (5), static contact subassembly (2) are pegged graft with bottom plate (4), and are fixed through the fastener, static contact subassembly (2) include static arc contact (201), static contact (202), quiet line row (203), static contact (202) and quiet line row (203) welding, static arc contact (201) and quiet line row (203) welding, the width of static arc contact (201) is 1/4 ~ 3/4 of static contact (202) width, the height of static arc contact (201) is 2 ~ 6 times of static contact (202) height, striking strip (1) are pegged graft with bottom plate (4), and one end and static contact subassembly (2) are with fastener fixed connection, insulating column (5) one end is fixed on bottom plate (4) through the fastener, and the other end passes through fastener and quiet line row (203) fixed connection.

2. The circuit breaker base structure of claim 1 wherein: the bottom plate (4) and the fixed contact assembly (2) are both L-shaped.

3. The circuit breaker base structure of claim 1 wherein: the fastening pieces comprise a first fastening piece (3), a second fastening piece (6), a third fastening piece (7), a fourth fastening piece (8) and a fifth fastening piece (9).

4. The circuit breaker base structure of claim 3 wherein: the first fastener (3) passes through the static arc contact (201) and is horizontally fixed on the bottom plate (4).

5. The circuit breaker base structure of claim 3 wherein: the static wire row (203) is spliced with the bottom plate (4), and the second fastener (6) passes through the spliced part to be connected with the static wire row (203).

6. The circuit breaker base structure of claim 3 wherein: the third fastener (7) is a stud, one end of the third fastener is fixedly connected with the bottom plate (4), the other end of the third fastener is connected with the insulating column (5), and an adaptive thread or an embedded insert is arranged inside the bottom plate (4) at the position corresponding to the bottom plate (4).

7. The circuit breaker base structure of claim 3 wherein: the fourth fastener (8) penetrates through the fixed contact assembly (2) and is fixed on the insulating column (5).

8. The circuit breaker base structure of claim 3 wherein: the fifth fastening piece (9) penetrates through the arc striking strip (1) to fix the arc striking strip (1) on the static arc contact (201).

9. The circuit breaker base structure of claim 3 wherein: the arc striking strip (1) and the fixed end of the static arc contact (201) are identical in width.

10. The circuit breaker base structure of claim 1 wherein: the width of the static arc contact (201) is 2/4 of the width of the static contact (202), and the height of the static arc contact (201) is 4 times of the height of the static contact (202).