Combined leakage protection circuit breaker

Abstract

The utility model discloses a combined leakage protection circuit breaker, which comprises a zero line junction box, a live line junction box and air switches, the live line junction box is arranged on one side of the zero line junction box, and the air switches are respectively arranged on one side of the middle part of the zero line junction box and one side of the middle part of the live line junction box. Storage grooves are formed in the upper ends and the lower ends of one sides of the null line junction box and the live wire junction box, connecting blocks are arranged in the storage grooves, clamping grooves are formed in the ends, away from the first rotating shaft, of the connecting blocks, and communicating cavities are formed in the sides, away from the storage grooves, of the null line junction box and the live wire junction box. A movable clamping strip is arranged in the communicating cavity, a clamping block is arranged at one end of the movable clamping strip, and the clamping block is clamped with the clamping groove. The zero line junction box and the live line junction box are combined and connected by adopting a clamping mode of the clamping block and the clamping groove, other tools are not needed during mounting and dismounting, and combined use of the leakage protection circuit breaker is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of leakage protection circuit breakers, in particular to a combined leakage protection circuit breaker. Background Art

[0002] The leakage protection circuit breaker is a switching electrical appliance designed to prevent fire and explosion accidents caused by electric shock or leakage in low-voltage lines. Its function is to quickly cut off the power supply circuit when electric shock or leakage occurs, thereby avoiding harm to the human body and equipment. The application number CN202222072260.2 has been retrieved. It is an assembled combined leakage protection circuit breaker. Through the set connection structure, the leakage protection circuit breakers can be spliced ​​and used in combination to ensure the stability of the leakage protection circuit breaker after splicing. A rotating connecting plate is adopted. When the leakage protection circuit breaker is used alone, it can be stored without taking up extra space. The positioning piece is set and used in conjunction with the positioning hole to ensure the accuracy of the leakage protection circuit breaker when splicing.

[0003] Similar to the above-mentioned assembled combined leakage protection circuit breaker: although the leakage protection circuit breakers can be spliced ​​and combined for use through the set connection structure, the splicing and disassembly of the leakage protection circuit breaker require the use of tools such as screwdrivers. When the staff forget to bring tools such as screwdrivers, they cannot quickly assemble or disassemble the leakage protection circuit breaker.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a combined leakage protection circuit breaker is proposed to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide a combined leakage protection circuit breaker to solve the problem that the above-mentioned assembled combined leakage protection circuit breaker proposed in the above-mentioned background technology needs to use tools such as screwdrivers when splicing and disassembling the leakage protection circuit breaker. When the staff forgets to bring tools such as screwdrivers, they cannot quickly assemble or disassemble the leakage protection circuit breaker.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined leakage protection circuit breaker, comprising a neutral wire junction box, a live wire junction box and an air switch, a live wire junction box is arranged on one side of the neutral wire junction box, the air switch is respectively arranged on one side of the middle of the neutral wire junction box and the live wire junction box, the outside of the air switch is covered with a rainproof shell, and storage grooves are arranged at both upper and lower ends of one side of the neutral wire junction box and the live wire junction box, and a connecting block is arranged in the storage groove.

[0007] Furthermore, a neutral wire inlet terminal is provided at the top center of the neutral wire junction box, and a live wire inlet terminal is provided at the top center of the live wire junction box. Clamping screws are provided on the upper and lower sides of the front ends of the neutral wire junction box and the live wire junction box, and the neutral wire junction box and the live wire junction box are both made of insulating plastic.

[0008] Furthermore, the bottom end of the connecting block is connected to the receiving slot via a first rotating shaft, and a clamping slot is provided at one end of the connecting block away from the first rotating shaft.

[0009] Furthermore, the neutral wire junction box and the live wire junction box are provided with connecting cavities at upper and lower ends of a side away from the storage slot, and movable clamping strips are provided inside the connecting cavities.

[0010] Furthermore, the center of the movable clamping strip is connected to the connecting cavity through a No. 2 rotating shaft, a clamping block is provided at one end of the movable clamping strip, the clamping block is engaged with the clamping slot, a No. 1 spring is provided on the top of the clamping block, and the end of the No. 1 spring away from the clamping block abuts against the inner wall of the connecting cavity.

[0011] Furthermore, one end of the movable clamping strip away from the clamping block is connected to a push rod through a movable shaft, and one end of the push rod away from the movable clamping strip is connected to a pressing block through a connecting cavity, and a No. 2 spring is sleeved on the outer wall of the push rod close to the pressing block.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the combined leakage protection circuit breaker adopts the card block and the card slot to realize the combined connection of the neutral wire junction box and the live wire junction box, and no other tools are required during installation and disassembly, which is convenient for the combined use of the leakage protection circuit breaker. The specific contents are as follows:

[0013] The upper and lower ends of one side of the neutral wire junction box and the live wire junction box are both provided with storage grooves, and a connecting block is provided in the storage groove. A connecting cavity is provided on the side of the neutral wire junction box and the live wire junction box away from the storage groove, and the connecting cavity corresponds to the connecting block. An active card strip is provided inside the connecting cavity, and the center of the active card strip is connected to the connecting cavity through a No. 2 rotating shaft, and the active card strip can rotate along the No. 2 rotating shaft as the center of a circle, and a card block is provided at one end of the active card strip, and the card block is engaged with the card groove, and a No. 1 spring is provided on the top of the card block, and the end of the No. 1 spring away from the card block is in contact with the inner wall of the connecting cavity. When the neutral wire junction box and the live wire junction box need to be connected, the connecting block is aligned with the connecting cavity and then the card block is lifted up under pressure. When the card block contacts the card slot on the top of the connecting block, it is engaged with the card slot through the rebound action of the No. 1 spring to complete the combination. When disassembly is required, the pressing block is pressed, and the pressing block drives the push rod to push the end of the movable card strip away from the card block. The movable card strip rotates with the No. 2 rotating shaft as the center of the circle to lift one end of the card block. The card block is lifted and cancels the engagement with the card slot, thereby realizing the disassembly of the leakage protection circuit breaker and facilitating the combined use of the leakage protection circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view structural diagram of a combined leakage protection circuit breaker of the utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of a combined leakage protection circuit breaker of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of a combined leakage protection circuit breaker connecting cavity of the utility model;

[0017] Figure 4 The utility model is a schematic diagram of the structure of an active clamping strip of a combined leakage protection circuit breaker.

[0018] In the figure: 1. Neutral wire junction box; 2. Live wire junction box; 3. Air switch; 4. Storage slot; 5. Connection block; 6. No. 1 rotating shaft; 7. Card slot; 8. Connecting chamber; 9. Movable card strip; 10. No. 2 rotating shaft; 11. No. 1 spring; 12. Card block; 13. Movable shaft; 14. Push rod; 15. Pressing block; 16. No. 2 spring; 17. Neutral wire inlet terminal; 18. Live wire inlet terminal; 19. Tightening screw; 20. Rainproof shell. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 4 The utility model provides a technical solution: a combined leakage protection circuit breaker, including a neutral wire junction box 1, a live wire junction box 2 and an air switch 3. The live wire junction box 2 is arranged on one side of the neutral wire junction box 1. The complete leakage protection circuit breaker is formed by combining the neutral wire junction box 1 and the live wire junction box 2. The air switch 3 is respectively arranged on one side of the middle of the neutral wire junction box 1 and the live wire junction box 2. The air switch 3 is the switch part of the leakage protection circuit breaker. The outside of the air switch 3 is covered with a rainproof shell 20. The rainproof shell 20 is made of transparent plastic material. The rainproof shell 20 prevents rain from splashing the air switch 3 and plays a certain rainproof effect. Storage grooves 4 are arranged at both upper and lower ends of one side of the neutral wire junction box 1 and the live wire junction box 2. The storage grooves 4 can store unused connection blocks 5 without occupying excess space. The storage grooves 4 are provided with connection blocks 5, which play a connecting card role.

[0021] A neutral wire inlet terminal 17 is provided at the top center of the neutral wire junction box 1, and a live wire inlet terminal 18 is provided at the top center of the live wire junction box 2. The neutral wire inlet terminal 17 and the live wire inlet terminal 18 can connect the neutral wire and the live wire. The upper and lower sides of the front ends of the neutral wire junction box 1 and the live wire junction box 2 are provided with tightening screws 19. The tightening screws 19 play the role of fixing the neutral wire and the live wire. The neutral wire junction box 1 and the live wire junction box 2 are both made of insulating plastic.

[0022] The bottom end of the connecting block 5 is connected to the receiving slot 4 via the No. 1 rotating shaft 6. The connecting block 5 can be rotated, stored or extended in the receiving slot 4 via the No. 1 rotating shaft 6. A clamping slot 7 is provided at one end of the connecting block 5 away from the No. 1 rotating shaft 6. The clamping slot 7 is a clamping component.

[0023] A connecting cavity 8 is provided at both upper and lower ends of the side of the neutral wire junction box 1 and the live wire junction box 2 away from the storage slot 4, and the connecting cavity 8 corresponds to the connecting block 5. An active card strip 9 is provided inside the connecting cavity 8, and the active card strip 9 plays a connecting role. The center of the active card strip 9 is connected to the connecting cavity 8 through the No. 2 rotating shaft 10, and the active card strip 9 can rotate along the No. 2 rotating shaft 10 as the center of the circle. A card block 11 is provided at one end of the active card strip 9, and the card block 11 is engaged with the card slot 7. The neutral wire junction box 1 and the live wire junction box 2 are engaged and combined by the engagement of the card block 11 with the card slot 7. A No. 1 spring 12 is provided on the top of the card block 11, and the end of the No. 1 spring 12 away from the card block 11 abuts against the inner wall of the connecting cavity 8, and the No. 1 spring 12 plays a rebound role. When the card block 11 is lifted under pressure or returns to the initial position through the elastic force of the No. 1 spring 12, the engagement of the card block 11 with the card slot 7 is achieved.

[0024] The end of the movable card strip 9 away from the card block 11 is connected to a push rod 14 through a movable shaft 13. The push rod 14 plays a role of pushing the connection. The end of the push rod 14 away from the movable card strip 9 passes through the connecting cavity 8 and is connected to a pressing block 15. The outer wall of the push rod 14 close to the pressing block 15 is sleeved with a second spring 16. The second spring 16 plays a rebound role so that the pressing block 15 rebounds to the initial position after being pressed. When the neutral wire junction box 1 and the live wire junction box 2 are connected, the connecting block 5 is aligned with the connecting cavity 8 and the card block 11 is pressed. Lift up, when the card block 11 contacts the card slot 7 at the top of the connecting block 5, it engages with the card slot through the rebound effect of the No. 1 spring 11 to complete the combination. When disassembly is required, press the pressing block 15, and the pressing block 15 drives the push rod 14 to push the end of the movable card strip 9 away from the card block 11. The movable card strip 9 rotates with the No. 2 rotating shaft 10 as the center of the circle so that one end of the card block 11 is lifted, and the card block 11 is lifted to cancel the engagement with the card slot 7, thereby realizing the disassembly of the leakage protection circuit breaker and facilitating the combined use of the leakage protection circuit breaker.

[0025] Working principle: When using a combined leakage protection circuit breaker, first, the neutral wire junction box 1 and the live wire junction box 2 need to be installed in a fixed position, and the connecting block 5 is aligned with the connecting cavity 8 and inserted deep into the connecting cavity 8, and the block 11 is lifted up under pressure. When the block 11 contacts the slot 7 at the top of the connecting block 5, it is engaged with the slot through the rebound effect of the No. 1 spring 11 to complete the combination. The outer cover of the air switch 3 is provided with a rainproof shell 20, and the rainproof shell 20 is made of transparent plastic material. The rainproof shell 20 prevents rain from splashing the air switch 3 and has a certain rainproof effect. When disassembly is required, the pressing block 15 is pressed, and the pressing block 15 drives the push rod 14 to push the end of the movable card strip 9 away from the card block 11. The movable card strip 9 rotates with the No. 2 rotating shaft 10 as the center of the circle, so that one end of the card block 11 is lifted, and the card block 11 is lifted and cancels the engagement with the card slot 7, thereby realizing the disassembly of the leakage protection circuit breaker and facilitating the combined use of the leakage protection circuit breaker.

Claims

1. A combined leakage protection circuit breaker, comprising a neutral wire junction box (1), a live wire junction box (2) and an air switch (3), characterized in that: A live wire junction box (2) is arranged on one side of the neutral wire junction box (1), the air switch (3) is arranged on one side of the middle of the neutral wire junction box (1) and the live wire junction box (2), the air switch (3) is covered with a rainproof shell (20) on the outside, and storage grooves (4) are arranged at both upper and lower ends of one side of the neutral wire junction box (1) and the live wire junction box (2), and a connection block (5) is arranged in the storage groove (4).

2. A combined leakage protection circuit breaker according to claim 1, characterized in that: A neutral wire inlet terminal (17) is arranged at the top center of the neutral wire junction box (1), and a live wire inlet terminal (18) is arranged at the top center of the live wire junction box (2). Fastening screws (19) are arranged at the upper and lower sides of the front ends of the neutral wire junction box (1) and the live wire junction box (2). Both the neutral wire junction box (1) and the live wire junction box (2) are made of insulating plastic material.

3. A combined leakage protection circuit breaker according to claim 1, characterized in that: The bottom end of the connection block (5) is connected to the storage slot (4) via a first rotating shaft (6), and a clamping slot (7) is provided at one end of the connection block (5) away from the first rotating shaft (6).

4. A combined leakage protection circuit breaker according to claim 1, characterized in that: A communication cavity (8) is provided at both upper and lower ends of the neutral wire junction box (1) and the live wire junction box (2) on a side away from the storage slot (4), and a movable clamping strip (9) is provided inside the communication cavity (8).

5. A combined leakage protection circuit breaker according to claim 4, characterized in that: The center of the movable clamping strip (9) is connected to the connecting cavity (8) via a No. 2 rotating shaft (10); a clamping block (11) is provided at one end of the movable clamping strip (9); the clamping block (11) is engaged with the clamping slot (7); a No. 1 spring (12) is provided on the top of the clamping block (11); an end of the No. 1 spring (12) away from the clamping block (11) abuts against the inner wall of the connecting cavity (8).

6. A combined leakage protection circuit breaker according to claim 5, characterized in that: The end of the movable clamping strip (9) away from the clamping block (11) is connected to a push rod (14) via a movable shaft (13); the end of the push rod (14) away from the movable clamping strip (9) passes through the connecting cavity (8) and is connected to a pressing block (15); and a second spring (16) is sleeved on the outer wall of the push rod (14) on the side close to the pressing block (15).

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