Arc extinguishing structure of circuit breaker

Abstract

The utility model discloses an arc extinguishing structure of a circuit breaker. The arc extinguishing device comprises a flash barrier, and a plurality of arc extinguishing grid sheets which can be disassembled and assembled and are used for blocking electric arcs are arranged in the flash barrier; the multiple limiting pieces are arranged on the two sides of the bottom end in the flash barrier at equal intervals; and the heat conducting sheet is arranged at the middle position of the bottom end in the flash barrier, and the top end of the heat conducting sheet is in contact with the bottom end of the arc extinguishing grid sheet. According to the utility model, the flash barrier is provided with the clamping grooves, the arc extinguishing grid sheets are installed on the flash barrier through the clamping grooves, the flash barrier is provided with the clamping plates, the arc extinguishing grid sheets are installed on the flash barrier through the clamping plates, the flash barrier is provided with the heat-conducting fins, and the heat-conducting fins are contacted with the arc extinguishing grid sheets, so that heat generated by the arc extinguishing grid sheets is conducted and dissipated; according to the arc extinguishing structure, when the arc extinguishing grids are damaged, the arc extinguishing grids are convenient and rapid to replace, and heat emitted by the arc extinguishing grids can be rapidly led out and dissipated.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to a circuit breaker arc extinguishing structure. Background Technology

[0002] A circuit breaker is a switching device that can close, carry, and interrupt current under normal circuit conditions and close, carry, and interrupt current under abnormal circuit conditions within a specified time. During the use of circuit breakers, in order to reduce the burning of contacts by electric arc and limit the space for arc expansion, it is generally used in conjunction with an arc extinguishing device.

[0003] In existing circuit breakers, the arc-extinguishing grid and the arc-isolating plate are connected by a snap-fit ​​mechanism. This results in slow installation of the arc-extinguishing chamber during production, complex assembly processes, and a significant impact on production efficiency. Furthermore, it is inconvenient to replace a damaged arc-extinguishing grid during use. Additionally, the arc-extinguishing chamber generates heat during operation, which is difficult to dissipate in a timely manner. Over time, this affects the efficiency and lifespan of the arc-extinguishing chamber. Therefore, we propose an arc-extinguishing chamber assembly structure to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an arc-extinguishing structure for a circuit breaker to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a circuit breaker arc-extinguishing structure, comprising:

[0006] An arc-blocking plate, wherein multiple detachable arc-extinguishing grid plates are installed inside the arc-blocking plate for blocking electric arcs;

[0007] The limiting components are multiple and are arranged at equal intervals on both sides of the bottom end inside the arc-blocking plate;

[0008] A heat-conducting sheet is disposed at the middle position of the bottom end inside the arc-quenching plate, and the top end of the heat-conducting sheet is in contact with the bottom end of the arc-quenching grid.

[0009] The card plate is rotatably disposed on both sides of the top of the arc-extinguishing plate, and the arc-extinguishing grid plate is sleeved with the arc-extinguishing plate through the card plate.

[0010] By adopting the above technical solution, the arc-extinguishing grid is installed on the arc-isolating plate. A retaining plate is provided on the arc-isolating plate, which holds the arc-extinguishing grid in place. A heat-conducting plate is provided on the arc-isolating plate, which contacts the arc-extinguishing grid to conduct and dissipate the heat generated by the arc-extinguishing grid. When the arc-extinguishing grid is damaged, the user can remove the arc-extinguishing grid from the arc-isolating plate by unlocking the retaining plate, making the replacement of the arc-extinguishing grid convenient and quick. It can also quickly conduct and dissipate the heat emitted by the arc-extinguishing grid. Furthermore, a fixing component is provided inside the retaining plate and the arc-extinguishing grid in the slot, which further fixes the position of the arc-extinguishing grid and prevents the arc-extinguishing grid from sliding during use. Moreover, the fixing component is made of high-temperature resistant material to prevent the fixing component from being damaged by the arc-extinguishing grid due to heat.

[0011] Preferably, the inside of the arc-blocking plate has multiple slots arranged at equal intervals on both sides.

[0012] Preferably, T-shaped clips are provided on both sides of the arc-extinguishing grid.

[0013] By adopting the above technical solution, the shape of the slot on the arc-blocking plate corresponds to the shape of the T-shaped clip on the arc-extinguishing grid, so that the arc-extinguishing grid can be stably and firmly placed inside the arc-blocking plate.

[0014] Preferably, the arc-blocking plate is engaged with the arc-extinguishing grid plate via a slot and a T-shaped clip.

[0015] By adopting the above technical solution, the arc-extinguishing grid plate can be easily installed and removed through the slot and T-shaped clip. If the arc-extinguishing grid plate in the arc-extinguishing structure is damaged, the user can remove the damaged arc-extinguishing grid plate from the arc-blocking plate through the slot and T-shaped clip.

[0016] Preferably, the top of one end of the arc-blocking plate is provided with lugs on both sides, and the clamping plate is rotatably connected to the arc-blocking plate through the lugs.

[0017] By adopting the above technical solution, the card plate rotates around the support lug as the center, which facilitates the card plate and the arc-blocking plate to be engaged.

[0018] Preferably, the other end of the arc-blocking plate has slots on both sides of the top, and the other end of the bottom of the plate has a buckle, and the arc-blocking plate is engaged with the plate through the slots and buckles.

[0019] By adopting the above technical solution, during the installation of the arc-extinguishing grid plate, the clamping plate can be engaged by the buckle and the slot to prevent the arc-extinguishing grid plate from detaching from the arc-isolating plate. In addition, a fixing component is provided in the slot, which fills the gap between the clamping plate and the T-shaped clamp on the arc-extinguishing grid plate.

[0020] Preferably, the arc-blocking plate is made of a high-temperature resistant material.

[0021] By adopting the above technical solution, the arc-blocking plate can be prevented from being damaged by the heated heat-conducting plate and the arc-extinguishing grid.

[0022] Preferably, the top of the limiting member is provided with a groove and the size of the groove is adapted to the size of the arc extinguishing grid plate.

[0023] By adopting the above technical solution, the spacing between multiple arc-extinguishing grid plates is made the same by using a limiting component. The installation position of the limiting component corresponds to the opening position of the slot on the arc-extinguishing plate, thereby restricting the installation position of the arc-extinguishing grid plate on the arc-extinguishing plate.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows: The arc extinguishing structure of the circuit breaker has a slot on the arc isolation plate, and the arc extinguishing grid is installed on the arc isolation plate through the slot. A retaining plate is also provided on the arc isolation plate to install the arc extinguishing grid. A heat-conducting plate is provided on the arc isolation plate, and the heat-conducting plate is in contact with the arc extinguishing grid to conduct and dissipate the heat generated by the arc extinguishing grid. When the arc extinguishing grid is damaged, this arc extinguishing structure is convenient and quick to replace, and can quickly conduct and dissipate the heat emitted by the arc extinguishing grid. Attached Figure Description

[0025] Figure 1 This is a perspective view of the present utility model;

[0026] Figure 2 This is the front view of the present utility model;

[0027] Figure 3 This is a side view of the present invention;

[0028] Figure 4 This is a top view of the present invention;

[0029] Figure 5 This is a top view of the arc-blocking plate of this utility model.

[0030] In the diagram: 1. Arc-blocking plate; 2. Limiting component; 3. Heat-conducting plate; 4. Arc-extinguishing grid plate; 5. Clamping plate. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-5 One embodiment of this utility model is a circuit breaker arc extinguishing structure, comprising:

[0033] Arc-blocking plate 1, with multiple detachable arc-extinguishing grid plates 4 installed inside the arc-blocking plate 1 for blocking electric arc; wherein the arc-extinguishing grid plates 4 are V-shaped, and the V-shaped arc-extinguishing grid plates 4 can better play the role of arc extinguishing, and at the same time, the V-shaped arc-extinguishing grid plates 4 can better dissipate heat, further improving the heat dissipation effect of the arc-extinguishing structure.

[0034] The limiting member 2 has multiple members arranged at equal intervals on both sides of the bottom end inside the arc-extinguishing plate 1; the groove on the limiting member 2 is oblique and adapted to the shape of the arc-extinguishing grid plate 4, so that the arc-extinguishing grid plate 4 can be stably installed inside the arc-extinguishing plate 1.

[0035] The heat-conducting plate 3 is located in the middle of the bottom of the arc-extinguishing plate 1, and the top of the heat-conducting plate 3 is in contact with the bottom of the arc-extinguishing grid plate 4. A connecting groove is provided in the middle of the bottom of the arc-extinguishing plate 1, and the heat-conducting plate 3 is connected to the arc-extinguishing plate 1 through the connecting groove. Both ends of the heat-conducting plate 3 are L-shaped. After the heat generated by the arc-extinguishing grid plate 4 is introduced into the heat-conducting plate 3, the heat is then discharged to the outside from the L-shaped part of the heat-conducting plate 3, which plays a role in heat dissipation.

[0036] The clamping plate 5 is rotatably disposed on both sides of the top of the arc-blocking plate 1, and the arc-extinguishing grid plate 4 is sleeved with the arc-blocking plate 1 through the clamping plate 5;

[0037] The arc-extinguishing grid 4 is mounted on the arc-isolating plate 1. A retaining plate 5 is provided on the arc-isolating plate 1, which holds the arc-extinguishing grid 4 in place. A heat-conducting plate 3 is provided on the arc-isolating plate 1, which contacts the arc-extinguishing grid 4 to conduct and dissipate the heat generated by the arc-extinguishing grid 4. When the arc-extinguishing grid 4 is damaged, the user can remove the arc-extinguishing grid 4 from the arc-isolating plate 1 by releasing the locking of the retaining plate 5, making the replacement of the arc-extinguishing grid 4 convenient and quick, and enabling rapid heat dissipation. Furthermore, a fixing component is provided inside the retaining plate 5 and the arc-extinguishing grid 4 in the retaining groove, which secures the arc-extinguishing grid 4. The position is further fixed to prevent the arc-extinguishing grid plate 4 from sliding during use. The fixing part is made of high-temperature resistant material to prevent the arc-extinguishing grid plate 4 from being damaged by heat. The arc-blocking plate 1 and the limiting part 2 are both made of high-temperature resistant material to prevent the heat-conducting plate 3 from damaging the arc-blocking plate 1 and the limiting part 2. The arc-extinguishing grid plate 4 is V-shaped to facilitate heat conduction. The limiting part 2 is installed on both sides of the heat-conducting plate 3. If the user needs to adjust the distance between multiple arc-extinguishing grid plates 4, the user can remove the excess arc-extinguishing grid plates 4 from the arc-blocking plate 1 so that the arc-extinguishing structure can be adapted to circuit breakers of different sizes.

[0038] In this embodiment, multiple slots are equidistantly arranged on both sides of the arc-extinguishing plate 1, and T-shaped clips are provided on both sides of the arc-extinguishing grid plate 4. The shape of the slots on the arc-extinguishing plate 1 corresponds to the shape of the T-shaped clips on the arc-extinguishing grid plate 4, so that the arc-extinguishing grid plate 4 can be stably and firmly placed inside the arc-extinguishing plate 1. The arc-extinguishing plate 1 is engaged with the arc-extinguishing grid plate 4 through the slots and T-shaped clips. The slots and T-shaped clips facilitate the disassembly and assembly of the arc-extinguishing grid plate 4. If the arc-extinguishing grid plate 4 inside the arc-extinguishing structure is damaged, the user can remove the damaged arc-extinguishing grid plate 4 from the arc-extinguishing plate 1 through the slots and T-shaped clips.

[0039] In this embodiment, the top of one end of the arc-blocking plate 1 is provided with ears on both sides. The clamping plate 5 is rotatably connected to the arc-blocking plate 1 through the ears. The clamping plate 5 rotates around the ears, which facilitates the clamping plate 5 to be engaged with the arc-blocking plate 1. Moreover, when the clamping plate 5 is released from the arc-blocking plate 1, the clamping plate 5 will not fall off and be lost from the arc-blocking plate 1.

[0040] In this embodiment, the top of the other end of the arc-isolating plate 1 is provided with slots on both sides, and the bottom of the plate 5 is provided with a buckle. The arc-isolating plate 1 is engaged with the plate 5 through the slots and buckles. When the arc-extinguishing grid plate 4 is installed, the plate 5 can be engaged through the buckles and slots to prevent the arc-extinguishing grid plate 4 from detaching from the arc-isolating plate 1. In addition, a fixing member is provided in the slot, which fills the gap between the T-shaped clamps on the plate 5 and the arc-extinguishing grid plate 4.

[0041] In this embodiment, the arc-blocking plate 1 is made of high-temperature resistant material, which can prevent the arc-blocking plate 1 from being damaged by the heated heat-conducting plate 3 and the arc-extinguishing grid plate 4.

[0042] In this embodiment, the top of the limiting member 2 is provided with a groove and the size of the groove is adapted to the size of the arc extinguishing grid plate 4. The limiting member 2 makes the distance between multiple arc extinguishing grid plates 4 the same. The installation position of the limiting member 2 corresponds to the opening position of the slot on the arc quenching plate 1, thereby restricting the installation position of the arc extinguishing grid plate 4 on the arc quenching plate 1.

[0043] Working principle: The arc-extinguishing grid plate 4 is installed on the arc-isolating plate 1 through a slot, and a retaining plate 5 is provided on the arc-isolating plate 1. The retaining plate 5 holds the arc-extinguishing grid plate 4 on the arc-isolating plate 1. A heat-conducting plate 3 is provided on the arc-isolating plate 1. The heat-conducting plate 3 is in contact with the arc-extinguishing grid plate 4 and conducts heat away from the arc-extinguishing grid plate 4. When the arc-extinguishing grid plate 4 is damaged, the user can remove the arc-extinguishing grid plate 4 from the arc-isolating plate 1 by releasing the lock of the retaining plate 5, making the replacement of the arc-extinguishing grid plate 4 convenient and quick, and quickly dissipating the heat emitted by the arc-extinguishing grid plate 4.

[0044] For those skilled in the art, this invention is not limited to the details of the exemplary embodiments described above, and can be implemented in other specific forms without departing from the spirit or scope of this invention. Therefore, the embodiments of this invention are exemplary and not restrictive. The scope of this invention is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A circuit breaker arc extinguishing structure, characterized in that, include: Arc-blocking plate (1), wherein multiple detachable arc-extinguishing grid plates (4) are installed inside the arc-blocking plate (1) for blocking electric arc. Limiting member (2), there are multiple limiting members (2) arranged at equal intervals on both sides of the bottom end inside the arc-blocking plate (1); The heat-conducting sheet (3) is located at the middle position of the bottom end inside the arc-blocking plate (1) and the top end of the heat-conducting sheet (3) is in contact with the bottom end of the arc-extinguishing grid plate (4); The card plate (5) is rotatably disposed on both sides of the top of the arc-blocking plate (1) and the arc-extinguishing grid plate (4) is sleeved with the arc-blocking plate (1) through the card plate (5).

2. The arc-extinguishing structure of a circuit breaker according to claim 1, characterized in that: The arc-blocking plate (1) has multiple slots arranged at equal intervals on both sides inside.

3. The arc-extinguishing structure of a circuit breaker according to claim 2, characterized in that: Both sides of the arc-extinguishing grid plate (4) are provided with T-shaped clips.

4. The arc-extinguishing structure of a circuit breaker according to claim 3, characterized in that: The arc-blocking plate (1) is engaged with the arc-extinguishing grid plate (4) through a slot and a T-shaped clip.

5. The arc-extinguishing structure of a circuit breaker according to claim 1, characterized in that: The top of one end of the arc-blocking plate (1) is provided with ears on both sides, and the clamping plate (5) is rotatably connected to the arc-blocking plate (1) through the ears.

6. The arc-extinguishing structure of a circuit breaker according to claim 5, characterized in that: Both sides of the top of the other end of the arc-blocking plate (1) are provided with slots, and the other end of the bottom of the card plate (5) is provided with a buckle. The arc-blocking plate (1) is connected to the card plate (5) through the slots and buckles.

7. The arc-extinguishing structure of a circuit breaker according to claim 1, characterized in that: The arc-blocking plate (1) is made of high-temperature resistant material.

8. The arc-extinguishing structure of a circuit breaker according to claim 1, characterized in that: The top of the limiting member (2) is provided with a groove and the size of the groove is adapted to the size of the arc extinguishing grid plate (4).

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