Miniature circuit breaker convenient to mount and dismount

Abstract

The utility model relates to the technical field of circuit breakers, and discloses a miniature circuit breaker convenient to mount and dismount, which comprises a circuit breaker body, a switch arranged on the left surface of the circuit breaker body, an L-shaped plate fixedly mounted on the right surface of the circuit breaker body, a mounting plate fixedly mounted on the lower surface of the circuit breaker body, and a fixing mechanism arranged on the mounting plate. The fixing mechanism comprises a U-shaped plate and a sliding plate, the U-shaped plate is fixedly mounted on the right surface of the mounting plate, the sliding plate is slidably mounted on the inner wall of the U-shaped plate, first rectangular plates are fixedly mounted on the front surface and the rear surface of the sliding plate correspondingly, and by pushing a push rod, the push rod drives a push plate fixedly connected with the push rod to move rightwards, the push plate enters a trapezoidal groove, and the trapezoidal groove is formed. And the sliding plate drives the fixed plate to move downwards, and a worker does not need to stretch fingers into the fixed plate to stir the buckle to dismount the fixed plate, so that the dismounting difficulty of the fixed plate is reduced, and the replacement and maintenance efficiency of the circuit breaker is improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically a small circuit breaker that is easy to install and disassemble. Background Technology

[0002] A circuit breaker is a switching device that can close, carry, and interrupt current under normal or abnormal circuit conditions. Circuit breakers can be used to distribute electrical energy, start asynchronous motors infrequently, and protect power lines and motors. Circuit breakers are classified into high-voltage circuit breakers and low-voltage circuit breakers according to their application range. The boundary between high and low voltage is relatively blurred. Generally, circuit breakers above 3kV are referred to as high-voltage electrical appliances.

[0003] Existing miniature circuit breakers are typically installed by snapping them onto a guide rail using clips at their rear end. Simply pushing the miniature circuit breaker onto the rail is sufficient for installation. However, because some electrical components require limited space for installation, they are installed quite compactly. Disassembly and replacement require workers to squeeze their hands into the gaps between the components to open the clips. The small gaps make it difficult to reach inside, making disassembly cumbersome and affecting the replacement and use of the miniature circuit breaker. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a miniature circuit breaker that is easy to install and disassemble. It solves the problem that when some electrical components are installed, the space is limited, resulting in a compact installation. When disassembling and replacing these components, workers need to squeeze their hands into the gaps between the components to open the clips. The gaps are small, making it difficult for hands to reach inside, which makes disassembly and replacement of the miniature circuit breaker cumbersome and affects its usability.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a miniature circuit breaker that is easy to install and disassemble, comprising a circuit breaker body, a switch provided on the left surface of the circuit breaker body, an L-shaped plate fixedly installed on the right surface of the circuit breaker body, and an mounting plate fixedly installed on the lower surface of the circuit breaker body.

[0008] The fixing mechanism is set on the mounting plate and includes a U-shaped plate and a sliding plate. The U-shaped plate is fixedly installed on the right surface of the mounting plate, and the sliding plate is slidably installed on the inner wall of the U-shaped plate. A first rectangular plate is fixedly installed on both the front and rear surfaces of the sliding plate, and a second rectangular plate is fixedly installed on the upper ends of the front and rear inner walls of the U-shaped plate.

[0009] Preferably, the fixing mechanism further includes a fixing plate and a push plate. The fixing plate is fixedly installed on the upper surface of the sliding plate. The fixing plate is slidably connected to the right surface of the two second rectangular plates. A rectangular groove is opened on the right surface of the mounting plate. The push plate is slidably installed inside the rectangular groove. A trapezoidal groove is opened on the left surface of the fixing plate corresponding to the position of the rectangular groove.

[0010] Preferably, a circular groove is formed on the left inner wall of the rectangular groove, a push rod is installed on the left surface of the mounting plate, the right end of the push rod slides into the interior of the circular groove, and the push rod is fixedly connected to the push plate.

[0011] Preferably, a second spring is fixedly installed on the left inner wall of the circular groove, the second spring is sleeved on the outer surface of the push rod, and the right end of the second spring is fixedly connected to the push plate.

[0012] Preferably, a first spring is fixedly installed at the lower end of each of the two second rectangular plates, and the lower ends of the two first springs are respectively fixedly connected to the corresponding first rectangular plates.

[0013] Preferably, guide grooves are provided on the front and rear inner walls of the U-shaped plate, the lower ends of the two guide grooves are open, guide plates are slidably installed inside the two guide grooves, and the two guide plates are fixedly connected to the corresponding first rectangular plates.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a miniature circuit breaker that is easy to install and disassemble, and has the following advantages:

[0016] 1. This miniature circuit breaker, which is easy to install and disassemble, moves to the right by pushing the push rod, causing the push plate fixedly connected to it to move. The push plate enters the trapezoidal groove, causing the sliding plate to move the fixed plate downward. This eliminates the need for workers to insert their fingers into the device to pry open the clips, reducing the difficulty of disassembly and improving the efficiency of circuit breaker replacement and maintenance.

[0017] 2. This miniature circuit breaker, which is easy to install and disassemble, guides the movement of the two first rectangular plates through two guide plates, thereby guiding the sliding plate that is fixedly connected to the two first rectangular plates. This prevents the sliding plate from shifting when it moves out of the interior of the U-shaped plate, thus improving the practicality of the miniature circuit breaker. Attached Figure Description

[0018] Figure 1 This is a top view of the overall structure of the miniature circuit breaker of this utility model, which is easy to install and disassemble.

[0019] Figure 2 This is a top-view sectional view of the internal structure of the miniature circuit breaker of this utility model, which is easy to install and disassemble.

[0020] Figure 3 This is a front view of the internal cross-section structure of the miniature circuit breaker of this utility model, which is easy to install and disassemble;

[0021] Figure 4 This is a schematic diagram of the internal cross-sectional side view of the miniature circuit breaker of this utility model, which is easy to install and disassemble.

[0022] In the diagram: 1. Circuit breaker body; 2. Switch; 3. L-shaped plate; 4. Mounting plate; 5. U-shaped plate; 6. Sliding plate; 7. First rectangular plate; 8. Second rectangular plate; 9. First spring; 10. Fixing plate; 11. Push plate; 12. Rectangular groove; 13. Trapezoidal groove; 14. Circular groove; 15. Push rod; 16. Second spring; 17. Guide groove; 18. Guide plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a new technical solution: a small circuit breaker that is easy to install and disassemble, including a circuit breaker body 1. The circuit breaker body 1 is the prior art and will not be described in detail here. A switch 2 is provided on the left surface of the circuit breaker body 1, an L-shaped plate 3 is fixedly installed on the right surface of the circuit breaker body 1, and an installation plate 4 is fixedly installed on the lower surface of the circuit breaker body 1.

[0025] The fixing mechanism is set on the mounting plate 4. The fixing mechanism includes a U-shaped plate 5 and a sliding plate 6. The U-shaped plate 5 is fixedly installed on the right surface of the mounting plate 4, and the sliding plate 6 is slidably installed on the inner wall of the U-shaped plate 5. A first rectangular plate 7 is fixedly installed on both the front and rear surfaces of the sliding plate 6, and a second rectangular plate 8 is fixedly installed on the upper ends of the front and rear inner walls of the U-shaped plate 5.

[0026] Furthermore, the fixing mechanism also includes a fixing plate 10 and a push plate 11. The fixing plate 10 is fixedly installed on the upper surface of the sliding plate 6. The fixing plate 10 is slidably connected to the right surface of the two second rectangular plates 8. A rectangular groove 12 is provided on the right surface of the mounting plate 4. The push plate 11 is slidably installed inside the rectangular groove 12. A trapezoidal groove 13 is provided on the left surface of the fixing plate 10 at the position corresponding to the rectangular groove 12.

[0027] Furthermore, by pushing the push rod 15, the push plate 11, which is fixedly connected to it, moves to the right. The push plate 11 enters the interior of the trapezoidal groove 13, causing the sliding plate 6 to move the fixed plate 10 downward. This eliminates the need for workers to insert their fingers into the groove to pry open the latches and disassemble the circuit breaker, reducing the difficulty of disassembly and improving the efficiency of circuit breaker replacement and maintenance.

[0028] Furthermore, a circular groove 14 is provided on the left inner wall of the rectangular groove 12, and a push rod 15 is installed on the left surface of the mounting plate 4. The right end of the push rod 15 slides into the interior of the circular groove 14, and the push rod 15 is fixedly connected to the push plate 11.

[0029] Furthermore, a second spring 16 is fixedly installed on the left inner wall of the circular groove 14. The second spring 16 is sleeved on the outer surface of the push rod 15, and the right end of the second spring 16 is fixedly connected to the push plate 11.

[0030] Furthermore, a first spring 9 is fixedly installed at the lower end of each of the two second rectangular plates 8, and the lower ends of the two first springs 9 are respectively fixedly connected to the corresponding first rectangular plates 7.

[0031] Furthermore, guide grooves 17 are provided on the front and rear inner walls of the U-shaped plate 5. The lower ends of the two guide grooves 17 are open. Guide plates 18 are slidably installed inside the two guide grooves 17. The two guide plates 18 are respectively fixedly connected to the corresponding first rectangular plate 7.

[0032] Furthermore, the movement of the two first rectangular plates 7 is guided by the two guide plates 18, thereby guiding the sliding plate 6 which is fixedly connected to the two first rectangular plates 7, preventing the sliding plate 6 from shifting when it moves out of the interior of the U-shaped plate 5, thus improving the practicality of the miniature circuit breaker.

[0033] Working Principle: When using this miniature circuit breaker, pick it up and align the L-shaped plate 3 at its upper end with the guide rail, which is T-shaped. Secure the L-shaped plate 3 to the upper end of the guide rail, filling the gap between it and the circuit breaker body 1. Then, press down on the lower end of the miniature circuit breaker, causing the fixing plate 10 to be pressed downwards by the guide rail. This causes the sliding plate 6, which is fixedly connected to it, to move synchronously. The sliding plate 6 then moves the two first rectangular plates 7 downwards, applying force to the two first springs 9, stretching them. The fixing plate 10 enters the interior of the U-shaped plate 5, and the guide rail contacts the circuit breaker body 1. At this point, the pressure on the fixing plate 10 disappears, and the two first springs 9, through the two first rectangular plates 7, move the sliding plate 6 upwards, thereby moving the fixing plate 10 upwards and fixing the circuit breaker body 1. When disassembly is required, the push rod 15 on the mounting plate 4 at the lower end of the circuit breaker body 1 can be pushed directly, causing the push rod 15 to move the push plate 11 fixedly connected to it to the right, so that the push plate 11 enters the interior of the trapezoidal groove 13. The inclined surface of the trapezoidal groove 13 is squeezed by the push plate 11, causing the sliding plate 6 to move downward. The sliding plate 6 drives the fixed plate 10 to move downward, so that the fixed plate 10 enters the interior of the U-shaped plate 5. When the two sliding plates 6 move downward, they drive the two guide plates 18 to move downward inside the two guide grooves 17. At this time, the lower end of the circuit breaker body 1 can be moved forward, and then the circuit breaker body 1 can be pulled upward to disassemble it, reducing the difficulty of disassembly. It does not require the staff to put their fingers into the interior to pry open the buckles to disassemble it, thus reducing the difficulty of disassembly.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A miniature circuit breaker that is easy to install and disassemble, comprising a circuit breaker body (1), a switch (2) disposed on the left surface of the circuit breaker body (1), and an L-shaped plate (3) fixedly mounted on the right surface of the circuit breaker body (1), characterized in that: A mounting plate (4) is fixedly installed on the lower surface of the circuit breaker body (1); The fixing mechanism is set on the mounting plate (4). The fixing mechanism includes a U-shaped plate (5) and a sliding plate (6). The U-shaped plate (5) is fixedly installed on the right surface of the mounting plate (4). The sliding plate (6) is slidably installed on the inner wall of the U-shaped plate (5). A first rectangular plate (7) is fixedly installed on both the front and rear surfaces of the sliding plate (6). A second rectangular plate (8) is fixedly installed on the upper end of the front and rear inner walls of the U-shaped plate (5).

2. The miniature circuit breaker that is easy to install and disassemble according to claim 1, characterized in that: The fixing mechanism also includes a fixing plate (10) and a push plate (11). The fixing plate (10) is fixedly installed on the upper surface of the sliding plate (6). The fixing plate (10) is slidably connected to the right surface of the two second rectangular plates (8). A rectangular groove (12) is opened on the right surface of the mounting plate (4). The push plate (11) is slidably installed inside the rectangular groove (12). A trapezoidal groove (13) is opened on the left surface of the fixing plate (10) corresponding to the position of the rectangular groove (12).

3. A miniature circuit breaker that is easy to install and disassemble according to claim 2, characterized in that: A circular groove (14) is provided on the left inner wall of the rectangular groove (12). A push rod (15) is installed on the left surface of the mounting plate (4). The right end of the push rod (15) slides into the interior of the circular groove (14). The push rod (15) is fixedly connected to the push plate (11).

4. A miniature circuit breaker that is easy to install and disassemble according to claim 3, characterized in that: A second spring (16) is fixedly installed on the left inner wall of the circular groove (14). The second spring (16) is sleeved on the outer surface of the push rod (15), and the right end of the second spring (16) is fixedly connected to the push plate (11).

5. A miniature circuit breaker that is easy to install and disassemble according to claim 1, characterized in that: The lower ends of the two second rectangular plates (8) are each fixedly installed with a first spring (9), and the lower ends of the two first springs (9) are respectively fixedly connected to the corresponding first rectangular plates (7).

6. A miniature circuit breaker that is easy to install and disassemble according to claim 1, characterized in that: The U-shaped plate (5) has guide grooves (17) on both the front and rear inner walls. The lower ends of the two guide grooves (17) are open. Guide plates (18) are slidably installed inside the two guide grooves (17). The two guide plates (18) are fixedly connected to the corresponding first rectangular plate (7).

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