CN210403622U

CN210403622U - Circuit breaker

Info

Publication number: CN210403622U
Application number: CN201921980058.1U
Authority: CN
Inventors: 王海良
Original assignee: Minpu Electric Co ltd
Current assignee: Minpu Electric Group Co., Ltd
Priority date: 2019-11-16
Filing date: 2019-11-16
Publication date: 2020-04-24
Anticipated expiration: 2029-11-16

Abstract

The utility model provides a circuit breaker, including shell, circuit breaker main part and upper cover, one of them wiring end that is located the circuit breaker main part at the shell is equipped with the space that supplies the earth leakage protection module embedding, is equipped with a plurality of electric conductor installation positions of being connected with the earth leakage protection module in this space, and electric conductor installation position corresponds the setting with the electric conductor on the earth leakage protection module. After the leakage protection module is embedded, the electric conductors of the leakage protection module correspond to the electric conductor mounting positions one by one, and then circuit conduction is realized among the electric conductors; when the electric leakage protection function is not needed, the electric leakage protection module is not installed, the direct-line conductors are directly installed in the shell in one-to-one correspondence with the conductor installation positions, and other parts are universal. The utility model discloses a set the circuit breaker to most parts general, realize the general function of most spare parts of two kinds of products to practice thrift the cost, improved the production efficiency of product.

Description

Circuit breaker

Technical Field

The utility model belongs to the technical field of the circuit breaker, especially, relate to a zero sequence transformer modularization circuit breaker.

Background

An air switch, also known as an air circuit breaker, is one type of circuit breaker. The switch can be automatically switched off as long as the current in the circuit exceeds the rated current. The air switch is an important electric appliance in a low-voltage distribution network and an electric power dragging system, and integrates control and multiple protection functions. Besides the contact and breaking of the circuit, the protection of short circuit, severe overload and undervoltage, etc. of the circuit or electrical equipment can be realized, and the protection device can also be used for starting the motor infrequently. The circuit breaker is provided with different functions according to the user demand, ordinary air switch circuit breaker only has overload protection and short-circuit protection, also have the circuit breaker that has earth leakage protection as required, earth leakage protection's circuit breaker installs zero sequence transformer in the circuit breaker, in fact most structure is the same in two kinds of above-mentioned circuit breakers, but all separately produce at present, both can not share, often can cause a product stock many, but the phenomenon of another kind of product but short-order, and the producer is also more troublesome in production, a plurality of part moulds will be separately makeed and process, the cost is higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a circuit breaker that most part can share is provided.

The utility model discloses a realize through following technical scheme:

the circuit breaker comprises a shell, a circuit breaker main body and an upper cover, wherein a space for embedding the electric leakage protection module is arranged in one wiring end of the shell, which is positioned in the circuit breaker main body, a plurality of electric conductor installation positions connected with the electric leakage protection module are arranged in the space, and the electric conductors on the electric leakage protection module correspond to the electric leakage protection module. After the leakage protection module is embedded, the electric conductors of the leakage protection module correspond to the electric conductor mounting positions one by one, and then circuit conduction is realized among the electric conductors; when the electric leakage protection function is not needed, the electric leakage protection module is not installed, the direct-line conductors are directly installed in the shell in one-to-one correspondence with the conductor installation positions, and other parts are universal.

The utility model has the advantages that: the utility model discloses a set the circuit breaker to most parts general, pack into the earth leakage protection module when needs earth leakage protection function can, only need when not needing earth leakage protection function with directly be connected electrically conductive piece with the electric conductor installation position can, realize the general function of most spare parts of two kinds of products to practice thrift the cost, improved the production efficiency of product.

Drawings

Fig. 1 is an overall perspective view of the present invention;

FIG. 2 is a schematic structural view of the present invention with the upper cover removed;

fig. 3 is a schematic structural view of the present invention with leakage protection function;

fig. 4 is a schematic structural diagram of the leakage protection module of the present invention;

fig. 5 is a schematic structural view of the air switch of the present invention without leakage protection function;

FIG. 6 is a schematic structural view of the first clamping piece;

FIG. 7 is a schematic structural view of the second card member;

fig. 8 is a schematic structural view of the clamping state of the first clamping piece and the second clamping piece.

Detailed Description

The present invention will be further described with reference to the following examples.

Examples

The circuit breaker shown in fig. 1-8 comprises a housing 1 and a circuit breaker main body 2, wherein a tripping mechanism is arranged in the circuit breaker main body 2, the tripping mechanism is the prior art, and is not described in detail herein, a space 3 for embedding an electric leakage protection module 4 is arranged at one of the terminals of the circuit breaker main body 2 of the housing 1, a plurality of conductor installation positions 31 connected with the electric leakage protection module 4 are arranged in the space 3, and the conductor installation positions 31 correspond to conductors on the electric leakage protection module 4.

In order to improve the assembly efficiency of the circuit breaker, the earth leakage protection module 4 is of a modular structure. The earth leakage protection module 4 is assembled in advance, and when the breaker is required to have an earth leakage protection function, the earth leakage protection module 4 is installed in the breaker to enable the breaker to become the breaker with the earth leakage protection function.

In order to enable the leakage protection module 4 to be a modular structure, the leakage protection module 4 is designed to include each conductive member 41, a zero sequence transformer 42 and an insulating member for separating each conductive member 41, the zero sequence transformer 42 is a prior art, and will not be described in detail herein, the insulating member includes a first clamping member 43 and a second clamping member 44, the first clamping member 43 and the second clamping member 44 are made of flame-retardant insulating material, wherein each conductive member 41 is arranged by penetrating through a through groove of the zero sequence transformer 42 and is clamped into an integrated module by the first clamping member 43 and the second clamping member 44, in this embodiment, the number of the conductive members 41 is four, each conductive member 41 is bent and bent after penetrating through the through groove of the zero sequence transformer 42, and the position between each conductive member 41 of the finally assembled leakage protection module 4 can correspond to the installation position of the conductive member 41 on the circuit breaker.

In order to ensure that the conductive members 41 on the earth leakage protection module 4 do not shake, the first clip 43 and the second clip 44 are respectively provided with a plurality of clip tracks for respectively clipping the conductive members 41, and the clip tracks are insulated and separated by the clip body to prevent the conductive members 41 from being adjacent to each other. The second clip 44 includes a fixing portion inserted into the through groove of the zero sequence transformer 42 and an extending portion extending to two sides to position the extending position of each conductive member 41, and the fixing portion and the extending portion are integrated. The second card member 44 includes a first card path 441, a second card path 442, a third card path 443 and a fourth card path 444, wherein the second card path 442 and the third card path 443 are disposed on two sides of the first card path 441, and the fourth card path 444 is disposed below the first card path 441. Each of the card lanes described in this embodiment is a slot having three sidewalls. The conductive piece 41 is clamped by the clamping groove 431 and the inner wall of the through groove of the zero sequence transformer 42, so that the conductive piece 41 is prevented from moving.

As shown in fig. 7, two locking protrusions 445 are provided on one of the two card members, and are provided on the upper surface of the second card member 44, and a locking groove 431 for locking with the two locking protrusions 445 is provided on the other card member. In this embodiment, the first clip member 43 is provided with an insertion block 432, the second clip member 44 is provided with a slot 446 for inserting the insertion block 432, and the two clip members are inserted into the slot 431 through the protrusion 445 to realize the clamping fit of the two clip members. Thereby fixing each conductive member 41 and making the earth leakage protection module 4 in a modular design.

As shown in fig. 5, when the earth leakage protection function is not required, only the inline conductors 5 need to be mounted on the conductor mounting locations 31 and can be directly fixed by screws, the inline conductors 5 are separated by the interphase insulating plate 6, and the interphase insulating plate 6 is engaged with the housing 1.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that simple modifications and substitutions by those skilled in the art are within the scope of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The circuit breaker, including shell, circuit breaker main part, its characterized in that: one of the wiring ends of the shell, which is positioned on the main body of the circuit breaker, is provided with a space for embedding the electric leakage protection module, a plurality of electric conductor installation positions connected with the electric leakage protection module are arranged in the space, and the electric conductor installation positions are arranged corresponding to electric conductors on the electric leakage protection module.

2. The circuit breaker of claim 1, wherein: the leakage protection module is of a modular structure.

3. The circuit breaker of claim 2, wherein: the leakage protection module comprises conductive pieces, a zero sequence transformer and insulating pieces for separating the conductive pieces, wherein each conductive piece comprises a first clamping piece and a second clamping piece, and the conductive pieces are arranged in a through groove which penetrates through the zero sequence transformer and are clamped into an integral module through the first clamping pieces and the second clamping pieces.

4. The circuit breaker of claim 3, wherein: at least one clamping piece comprises clamping channels for clamping the conductive pieces respectively, and the clamping channels are isolated and separated through a clamping piece body in an insulating mode.

5. The circuit breaker of claim 4, wherein: the second clamping piece comprises a fixing part inserted into the through groove of the zero sequence transformer and extending parts extending to two sides for positioning extending positions of the conductive parts, and the fixing part and the extending parts are of an integrated structure.

6. The circuit breaker of claim 3 or 4, wherein: the clamping piece provided with the clamping channel comprises a first clamping channel, a second clamping channel, a third clamping channel and a fourth clamping channel, wherein the second clamping channel and the third clamping channel are distributed on two sides of the first clamping channel, and the fourth clamping channel is arranged below the first clamping channel.

7. The circuit breaker of claim 6, wherein: the clamping channel is a groove with three side walls.

8. The circuit breaker of claim 3, wherein: one of the clamping pieces is provided with a clamping protrusion, and the other clamping piece is provided with a clamping groove which is clamped and matched with the clamping protrusion.

9. The circuit breaker of claim 6, wherein: the first clamping piece and the second clamping piece are made of flame-retardant insulating materials.

10. The circuit breaker of claim 1, wherein: the conductor installation positions are provided with the straight-line conductors, the straight-line conductors are separated through the interphase insulating plates, and the interphase insulating plates are clamped with the shell.