CN219892134U - Cutting device for circuit breaker - Google Patents

Abstract

The utility model discloses a cutting device for a circuit breaker, which relates to the technical field of battery breaking systems and comprises an upper shell and a lower shell, wherein the upper shell is positioned above the lower shell, a circuit component is arranged between the upper shell and the lower shell, a first cavity is formed in the upper shell, a cutting punch is arranged in the first cavity in a sliding manner, and a second cavity is formed in the lower shell. The drive force applied by the breaker drive source can push the cutting punch to move downwards along the inner part of the first cavity, so that the upper shell extrudes the conductive piece to move downwards along with the cutting punch until the conductive piece contacts with the two limiting protection plates, and the circuit component is separated from the conductive piece, thereby realizing outage operation, and then the conductive piece can move upwards and contact with the circuit component under the pushing of the elastic force of the reset spring only by canceling the drive force applied by the breaker drive source, thereby recovering the smoothness of a circuit, and the breaker can be recycled to avoid the waste of materials.

Description

Cutting device for circuit breaker

Technical Field

The utility model relates to the technical field of battery breaking systems, in particular to a breaking device for a breaker.

Background

The new energy automobile is an automobile which adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel vehicle-mounted power device) and integrates the advanced technology in the aspect of driving a power control box of the automobile, and the formed technical principle is advanced, the automobile is provided with a novel technology and a novel structure, wherein the electric automobile is widely used, and in the safety field of the electric automobile, a circuit breaker is used for closing certain circuits in a collision accident, so that the risk of fire is reduced as much as possible. In the related art, a circuit breaker is usually selected to be a hot-melt circuit breaker, so that when a circuit is overloaded for a long time or a short circuit occurs, heat generated by current can be gradually accumulated until the circuit is fused, thereby achieving the purpose of cutting off the circuit.

The utility model patent with the publication number of CN218471881U discloses a cutting device for a circuit breaker. When the circuit breaker cutting device is used, the circuit is cut off in a way that the cutting punch moves downwards to cut off the circuit component, so that the cut circuit component can be continuously used after being replaced, excessive waste of materials can be caused, the repairing workload can be increased, and the circuit breaker cutting device is unfavorable for practical use.

Disclosure of Invention

The utility model aims to provide a cutting device for a circuit breaker, which solves the problems that when the cutting device for the circuit breaker is used, the cutting punch moves downwards to cut off a circuit component, so that the cut circuit component can be continuously used after being replaced, excessive waste of materials is caused, the repairing workload is increased, and the actual use is not facilitated.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a cutting device for circuit breaker, includes casing and lower casing, the top that the casing is located the casing down is gone up to the casing, and is provided with circuit component between casing and the lower casing, go up the inside of casing and seted up first cavity, the inside slip of first cavity is provided with cuts off the drift, the second cavity has been seted up to the inside of casing down, the inboard bottom of second cavity is fixed with reset spring, reset spring's top is fixed with the insulation board, the top of insulation board is fixed with electrically conductive piece, electrically conductive piece is used for connecting circuit component in order to ensure the unobstructed of circuit.

Further, arc extinguishing media are arranged at the bottom of the upper shell and the top of the conductive piece.

Furthermore, the arc extinguishing medium is made of a material with high volume resistance and capable of adsorbing an electric arc.

Furthermore, two limiting protection plates are fixed on the inner wall of the second cavity, and the two limiting protection plates are located below the conductive piece.

Further, a stop block is fixed on the inner wall of the first cavity and is located right above the conductive piece.

Further, the circuit component and the conductive piece are provided with notches.

In summary, the utility model has the technical effects and advantages that:

1. according to the circuit breaker, the drive force applied by the drive source of the circuit breaker can push the cutting punch to move downwards along the inner part of the first cavity, so that the upper shell extrudes the conductive piece to move downwards along with the cutting punch until the conductive piece contacts with the two limiting protection plates, the circuit component is separated from the conductive piece, and therefore power-off operation is achieved, and then the conductive piece can move upwards and contact with the circuit component under the pushing of the elastic force of the reset spring only by canceling the drive force applied by the drive source of the circuit breaker, so that the smoothness of a circuit is recovered, and the circuit breaker can be recycled, and the waste of materials is avoided.

2. According to the utility model, the stop block arranged in the first cavity can limit the upward movement of the conductive piece, so that the conductive piece can be tightly attached to the stop block under the thrust action of the reset spring, the position stability of the conductive piece is ensured, and the conductive piece can be better connected with the circuit component to ensure the smooth electric power.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a circuit in an embodiment of the utility model;

FIG. 2 is a schematic diagram of a circuit in an embodiment of the utility model after the circuit is cut off;

fig. 3 is a schematic structural view of a return spring, an insulating plate and a conductive member according to an embodiment of the present utility model.

In the figure: 1. an upper housing; 2. a lower housing; 3. a circuit member; 4. a first cavity; 5. cutting off the punch; 6. a second cavity; 7. a return spring; 8. an insulating plate; 9. a conductive member; 10. arc extinguishing medium; 11. a limit protection plate; 12. and a stop block.

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.

Examples: referring to fig. 1-3, a breaking device for a circuit breaker includes an upper case 1 and a lower case 2, both of which are part of the circuit breaker, the upper case 1 is located above the lower case 2, the upper case 1 and the lower case 2 are fixedly connected through bolts, and a circuit member 3 is disposed between the upper case 1 and the lower case 2, the circuit member 3 includes, but is not limited to, a copper bar and an aluminum bar, a first cavity 4 is provided in the interior of the upper case 1, a breaking punch 5 is slidably provided in the interior of the first cavity 4, the breaking punch 5 is made of a hard material, and is used for receiving a driving force applied by a driving source of the circuit breaker, a second cavity 6 is provided in the interior of the lower case 2, a return spring 7 is fixed to the bottom of the inner side of the second cavity 6, an insulating plate 8 is fixed to the top end of the return spring 7, a conductive piece 9 is fixed to the top of the insulating plate 8, the conductive piece 9 is used for connecting the circuit member 3 to a smooth circuit, the conductive piece 9 includes, but is not limited to a copper bar and an aluminum bar, and cuts are provided in the circuit member 3 and the conductive piece 9 so that the connection of the circuit member 3 and the conductive piece 9 is more tightly secured.

The cutting punch 5 can be pushed to move downwards along the inside of the first cavity 4 by the driving force applied by the driving source of the circuit breaker, so that the upper shell 1 extrudes the conductive piece 9 to move downwards along with the cutting punch until the conductive piece 9 contacts with the two limit protection plates 11, the circuit component 3 is separated from the conductive piece 9, the power-off operation is realized, the conductive piece 9 can be moved upwards and contacted with the circuit component 3 under the pushing of the elastic force of the reset spring 7 only by canceling the driving force applied by the driving source of the circuit breaker, and the smoothness of the circuit is recovered, so that the circuit breaker can be recycled and the waste of materials is avoided.

Wherein, the bottom of going up casing 1 and the top of electrically conductive piece 9 all are provided with the arc extinguishing medium 10, and the arc extinguishing medium 10 includes but is not limited to silica gel and silicone oil, and the inner wall of second cavity 6 is fixed with two spacing protection boards 11, and two spacing protection boards 11 all are located the below of electrically conductive piece 9, and the inner wall of first cavity 4 is fixed with dog 12, and dog 12 is located directly over the electrically conductive piece 9.

The arc after the circuit component 3 and the conductive piece 9 are separated is extinguished by means of the arc extinguishing medium 10, the downward movement distance of the conductive piece 9 can be limited by means of the limiting protection plate 11, excessive deformation of the reset spring 7 is avoided, the upward movement of the conductive piece 9 can be limited by means of the stop block 12 arranged in the first cavity 4, the conductive piece 9 can be tightly attached to the stop block 12 under the action of the thrust of the reset spring 7, so that the position of the conductive piece 9 is stable, and the conductive piece 9 can be better connected with the circuit component 3 to ensure the smooth electric power.

The working principle of the utility model is as follows:

when an emergency occurs, the breaker driving source can apply driving force to the cutting punch 5, so that the cutting punch 5 moves downwards along the inner wall of the first cavity 4, and the conductive piece 9 is extruded to move downwards in the process of moving downwards the cutting punch 5, so that the circuit component 3 and the conductive piece 9 can be helped to be separated, the power-off operation is realized, and after the conductive piece 9 is in contact with the limiting protection plate 11, the cutting punch cannot move downwards continuously, and the excessive deformation of the reset spring 7 is avoided;

after the fault is relieved, the breaker driving source does not apply driving force to the cutting punch 5 any more, and the return spring 7 can push the conductive piece 9 and the cutting punch 5 to move upwards by means of self elastic force because of being compressed, and is affected by the limit of the stop block 12, the conductive piece 9 can only be tightly attached to the conductive piece, and is contacted with the circuit component 3 again to ensure the smoothness of a circuit, and the cutting punch 5 can return to the inside of the first cavity 4 under the pushing of the conductive piece 9, so that the breaker can be recycled.

Finally, it should be noted that: the foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (10)

1. The utility model provides a breaker is with cutting device, includes upper casing (1) and lower casing (2), its characterized in that: the upper shell (1) is located above the lower shell (2), a circuit component (3) is arranged between the upper shell (1) and the lower shell (2), a first cavity (4) is formed in the upper shell (1), a cutting punch (5) is slidably arranged in the first cavity (4), a second cavity (6) is formed in the lower shell (2), and a reset spring (7) is fixed to the bottom of the inner side of the second cavity (6).

2. The breaking device for circuit breaker according to claim 1, characterized in that: an insulating plate (8) is fixed at the top end of the return spring (7).

3. The breaking device for circuit breaker according to claim 2, characterized in that: the top of the insulating plate (8) is fixed with a conductive piece (9), and the conductive piece (9) is used for being connected with the circuit component (3) to ensure the smoothness of a circuit.

4. The breaking device for circuit breaker according to claim 1, characterized in that: the bottom of the upper shell (1) and the top of the conducting piece (9) are both provided with arc extinguishing media (10).

5. The breaking device for circuit breaker according to claim 4, wherein: the arc extinguishing medium (10) is made of a material with high volume resistance and capable of adsorbing an electric arc.

6. The breaking device for circuit breaker according to claim 1, characterized in that: two limit protection plates (11) are fixed on the inner wall of the second cavity (6).

7. The breaking device for circuit breaker according to claim 6, wherein: both limit protection plates (11) are positioned below the conductive piece (9).

8. The breaking device for circuit breaker according to claim 1, characterized in that: a stop block (12) is fixed on the inner wall of the first cavity (4).

9. The breaking device for circuit breaker according to claim 8, wherein: the stop block (12) is positioned right above the conductive piece (9).

10. The breaking device for circuit breaker according to claim 1, characterized in that: the circuit component (3) and the conductive piece (9) are provided with cuts.