CN219286303U

CN219286303U - Telescopic conducting rod of circuit breaker

Info

Publication number: CN219286303U
Application number: CN202320708965.0U
Authority: CN
Inventors: 林艳红; 李平
Original assignee: Hubei Feite Electromechanical Co ltd
Current assignee: Hubei Feite Electromechanical Co ltd
Priority date: 2023-04-03
Filing date: 2023-04-03
Publication date: 2023-06-30
Anticipated expiration: 2033-04-03

Abstract

The utility model relates to the technical field of circuit breaker components, in particular to a telescopic conducting rod of a circuit breaker, which comprises a fixed contact and a moving contact, wherein the top of the fixed contact is fixedly connected with a first connecting rod, the bottom of the moving contact is coaxially provided with a second connecting rod, and the outer part of the second connecting rod is provided with an outer pipe which is in plug-in fit with the second connecting rod; the fixed contact and the moving contact are respectively fixedly connected with a first coil box and a second coil box which are identical in structure, and the first coil box and the second coil box are vertically aligned. According to the utility model, through the first coil box and the second coil box, when the power is on, the first coil and the second coil are attracted mutually, so that the moving contact is communicated with the fixed contact, after the power is off, the first coil and the second coil lose magnetism, the moving contact drops downwards, and then the moving contact is separated from the fixed contact, the power-off protection mode is simpler, and the possibility of errors is smaller.

Description

Telescopic conducting rod of circuit breaker

Technical Field

The utility model relates to the technical field of circuit breaker components, in particular to a telescopic conducting rod of a circuit breaker.

Background

A circuit breaker refers to a switching device capable of closing, carrying and breaking current under normal or abnormal loop conditions. The circuit breaker can be used for distributing electric energy, and the asynchronous motor is not started frequently, so that the power supply circuit, the motor and the like are protected.

The utility model provides a circuit breaker is arranged in the conducting rod is used for installing moving contact and fixed contact's metal pole more, and the circuit breaker is at normal operating time, and moving contact and fixed contact, it is by setting up the coil in the circuit breaker drive link assembly motion and realize, and the coil no longer produces the magnetic field after the outage, consequently can not make moving contact and fixed contact through link assembly, just can realize moving contact and fixed contact's breaking away from promptly after the outage need through link assembly's work, and link assembly can receive frictional resistance at the during operation, consequently makes moving contact and fixed contact's breaking away from and produces the delay, has increased the risk of circuit breaker when using. In view of this, we propose a telescopic conducting rod for a circuit breaker.

Disclosure of Invention

In order to make up for the defects, the utility model provides a telescopic conducting rod of a circuit breaker.

The technical scheme of the utility model is as follows:

the telescopic conducting rod of the circuit breaker comprises a fixed contact and a moving contact, wherein the top of the fixed contact is fixedly connected with a first connecting rod, the bottom of the moving contact is coaxially provided with a second connecting rod, and the outer part of the second connecting rod is provided with an outer pipe which is in plug-in fit with the second connecting rod; the outer walls of the fixed contact and the moving contact are respectively and fixedly connected with a first coil box and a second coil box which have the same structure, and the first coil box and the second coil box are vertically aligned; the first coil box and the second coil box are respectively provided with a first coil and a second coil, the directions of north poles formed by the first coil and the second coil are the same, the first coil and the second coil are electrically connected through an external wire arranged outside the first coil and the second coil, and the first coil and the second coil are respectively electrically connected with the fixed contact and the moving contact.

As the preferable technical scheme, first coil box includes first box body, and first coil is located first box body, and first coil includes first interior iron core and twines the first winding wire on first interior iron core circumference outer wall, first winding wire one end is connected with external wire, and the other end is connected with the fixed contact through first interior wire.

As the preferable technical scheme, first inner core one end is fixed with first box body inner wall through first fixed block, and the other end integrated into one piece has the first outer core that stretches out to first box body outside.

As a preferable technical scheme, the first outer iron core in the first coil box is opposite to the second outer iron core in the second coil box.

As the preferable technical scheme, two positioning blocks are symmetrically and integrally formed on the circumferential outer wall of the second connecting rod, and a slot for the second connecting rod to be inserted and matched and a positioning slot for the positioning block to be inserted and matched are formed on the outer tube.

As an optimal technical scheme, the top of the circumferential outer wall of the second connecting rod is fixedly connected with a buffer pad.

As a preferable technical scheme, the winding direction of the first winding wire in the first coil box is the same as the winding direction of the second winding wire in the second coil box.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, through the first coil box and the second coil box, when the power is on, the first coil and the second coil are attracted mutually, so that the moving contact is communicated with the fixed contact, after the power is off, the first coil and the second coil lose magnetism, the moving contact drops downwards, and then the moving contact is separated from the fixed contact, the power-off protection mode is simpler, and the possibility of errors is smaller.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view showing the internal structures of the first coil housing and the second coil housing according to the present utility model;

fig. 3 is a schematic structural view of an outer tube according to the present utility model.

The meaning of each reference numeral in the figures is:

1. a fixed contact; 10. a first link; 2. an outer tube; 20. a slot; 21. a positioning groove; 3. a moving contact; 30. a second link; 31. a cushion pad; 32. a positioning block; 4. a first coil case; 40. a first case; 41. a first inner core; 42. a first fixed block; 43. a first wound wire; 44. a first inner wire; 45. a first outer core; 5. a second coil box; 50. a second case; 51. a second inner core; 52. a second fixed block; 53. a second wound wire; 54. a second inner wire; 55. a second outer core; 6. and (5) externally connecting a wire.

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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a technical solution:

the telescopic conducting rod of the circuit breaker comprises a fixed contact 1 and a movable contact 3, wherein the top of the fixed contact 1 is fixedly connected with a first connecting rod 10, the bottom of the movable contact 3 is coaxially provided with a second connecting rod 30, and the outer part of the second connecting rod 30 is provided with an outer tube 2 which is in plug-in fit with the second connecting rod; the outer walls of the fixed contact 1 and the moving contact 3 are respectively and fixedly connected with a first coil box 4 and a second coil box 5 which have the same structure, and the first coil box 4 and the second coil box 5 are vertically aligned; a first coil and a second coil are respectively arranged in the first coil box 4 and the second coil box 5, the directions of north poles formed by the first coil and the second coil are the same, the first coil and the second coil are electrically connected through an external lead 6 arranged outside the first coil and the second coil, and the first coil and the second coil are respectively electrically connected with the fixed contact 1 and the moving contact 3. Through the first coil box 4 and the second coil box 5 that set up, when the circular telegram, first coil and second coil looks mutual attraction for moving contact 3 communicates with fixed contact 1, and after the outage, first coil loses magnetism with the second coil, and moving contact 3 drops downwards, and then makes moving contact 3 break away from with fixed contact 1, and outage protection mode is simpler, and the possibility of making mistakes is less.

As a preferred embodiment, the first coil box 4 includes a first box body 40, the first coil is located in the first box body 40, the first coil includes a first inner core 41 and a first winding wire 43 wound on the circumferential outer wall of the first inner core 41, one end of the first winding wire 43 is connected with the external connection wire 6, and the other end is connected with the fixed contact 1 through the first inner wire 44. When the first winding wire 43 is energized, a magnetic field is generated by the first inner core 41.

Preferably, in this embodiment, one end of the first inner core 41 is fixed to the inner wall of the first case 40 by the first fixing block 42, and the other end is integrally formed with the first outer core 45 protruding to the outside of the first case 40. The first fixing block 42 may connect the first inner core 41 and the first box 40, and the first fixing block 42 is made of an insulating material.

Preferably, in the present embodiment, the first outer core 45 in the first coil housing 4 is opposed to the second outer core 55 in the second coil housing 5. When both the first coil and the second coil are energized, the first outer core 45 and the second outer core 55 are brought close to each other.

It should be noted that, the second coil box 5 includes a second box 50, the second coil is located in the second box 50, the second coil includes a second inner core 51 and a second winding wire 53 wound on an outer wall of the second inner core 51, one end of the second winding wire 53 is connected with the external wire 6, the other end is connected with the moving contact 3 through a second inner wire 54, one end of the second inner core 51 is fixed with an inner wall of the second box 50 through a second fixing block 52, and the other end is integrally formed with a second outer core 55 extending out of the second box 50.

As a preferable example of the present embodiment, two positioning blocks 32 are symmetrically and integrally formed on the circumferential outer wall of the second connecting rod 30, and the outer tube 2 is provided with a slot 20 for the second connecting rod 30 to be inserted and matched, and a positioning slot 21 for being inserted and matched with the positioning blocks 32. The stability of the connection of the second link 30 with the outer tube 2 can be increased by the provision of the positioning block 32 and the positioning groove 21.

Preferably, the top of the outer circumferential wall of the second link 30 is fixedly connected with a buffer pad 31. The buffer cushion 31 can reduce the loss generated by the collision between the movable contact 3 and the top of the outer tube 2.

As a preferable example of the present embodiment, the first winding wire 43 in the first coil housing 4 is wound in the same direction as the second winding wire 53 of the second coil housing 5. Ensuring that the first coil and the second coil are able to generate magnetic fields in the same direction.

According to the telescopic conducting rod of the circuit breaker, when the circuit breaker is electrified, the first coil and the second coil are attracted mutually through the first coil box 4 and the second coil box 5, so that the moving contact 3 is communicated with the fixed contact 1, after the circuit breaker is powered off, the first coil and the second coil lose magnetism, the moving contact 3 drops downwards, the moving contact 3 is separated from the fixed contact 1, the power-off protection mode is simpler, and the possibility of errors is lower.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a telescopic conducting rod of circuit breaker, includes fixed contact (1) and moving contact (3), its characterized in that: the top of the fixed contact (1) is fixedly connected with a first connecting rod (10), the bottom of the moving contact (3) is coaxially provided with a second connecting rod (30), and an outer tube (2) which is in plug-in fit with the second connecting rod (30) is arranged outside the second connecting rod; the outer walls of the fixed contact (1) and the moving contact (3) are respectively and fixedly connected with a first coil box (4) and a second coil box (5) which are identical in structure, and the first coil box (4) and the second coil box (5) are vertically aligned; the first coil box (4) and the second coil box (5) are respectively provided with a first coil and a second coil, the directions of north poles formed by the first coil and the second coil are the same, the first coil and the second coil are electrically connected through an external lead (6) arranged outside the first coil and the second coil, and the first coil and the second coil are respectively electrically connected with the fixed contact (1) and the moving contact (3).

2. The telescoping conductive pole of the circuit breaker of claim 1, wherein: the first coil box (4) comprises a first box body (40), the first coil is located in the first box body (40), the first coil comprises a first inner iron core (41) and a first winding wire (43) wound on the circumferential outer wall of the first inner iron core (41), one end of the first winding wire (43) is connected with an external wire (6), and the other end of the first winding wire is connected with the fixed contact (1) through a first inner wire (44).

3. The telescoping conductive pole of the circuit breaker of claim 2, wherein: one end of the first inner iron core (41) is fixed with the inner wall of the first box body (40) through a first fixing block (42), and a first outer iron core (45) extending out of the first box body (40) is integrally formed at the other end of the first inner iron core.

4. A telescopic conducting rod for a circuit breaker according to claim 3, wherein: the first outer iron core (45) in the first coil box (4) is opposite to the second outer iron core (55) in the second coil box (5).

5. The telescoping conductive pole of the circuit breaker of claim 4, wherein: two positioning blocks (32) are symmetrically and integrally formed on the circumferential outer wall of the second connecting rod (30), a slot (20) for the second connecting rod (30) to be in plug-in fit and a positioning groove (21) for the positioning blocks (32) to be in plug-in fit are formed in the outer tube (2).

6. The telescoping conductive pole of the circuit breaker of claim 5, wherein: the top of the peripheral outer wall of the second connecting rod (30) is fixedly connected with a buffer pad (31).

7. The telescoping conductive pole of the circuit breaker of claim 6, wherein: the first winding wire (43) in the first coil box (4) and the second winding wire (53) in the second coil box (5) are wound in the same direction.