Miniature circuit breaker convenient to disassemble and assemble

Abstract

The utility model provides a miniature circuit breaker convenient to disassemble and assemble, and belongs to the technical field of circuit breakers. Comprising a circuit breaker body and a mounting base, a first clamping groove is formed in the bottom of the rear side wall of the circuit breaker body, a second clamping groove is slidably connected to the top of the rear side wall of the circuit breaker body, and a supporting part is arranged between the top of the second clamping groove and the circuit breaker body; the interior of the second clamping groove is hollow, and two sides of the second clamping groove are symmetrically provided with locking parts which are used for limiting and locking the circuit breaker body on the installation seat. Under the combined action of the supporting part, the locking part and the like, the circuit breaker main body can be conveniently disassembled and assembled, the mounting position of the circuit breaker main body can be conveniently adjusted according to needs, and the locking rod is inserted into the adjusting hole to lock the mounting position. The situation that the circuit breaker main body moves left and right due to external force collision after being clamped on the mounting seat is avoided, the situation that the circuit breaker main body falls off due to limited clamping force when being subjected to external force after being clamped on the mounting seat is avoided, and the use effect is greatly improved.

Description

Technical Field

[0001] This utility model provides a miniature circuit breaker that is easy to assemble and disassemble, belonging to the field of circuit breaker technology. Background Technology

[0002] Miniature circuit breakers, also known as micro circuit breakers, are suitable for overload and short-circuit protection of AC 50 / 60Hz lines with a rated voltage of 230 / 400V and a rated current up to 63A. They can also be used for infrequent switching of circuits under normal conditions. Miniature circuit breakers are mainly used in various places such as industrial, commercial, high-rise buildings, and residential buildings.

[0003] Publication number CN222421818U discloses a miniature circuit breaker that is easy to install, including a circuit breaker body and a mounting rail base. The circuit breaker body has a transition slot on its rear side, and a rail base locking assembly is located at the bottom of the transition slot. The rail base locking assembly includes a liftable rail base, an adjusting bolt at the center of its bottom, and positioning guide posts symmetrically arranged at the bottom of the rail base based on the adjusting bolt as an axis. This invention uses a tool to adjust the bolt in the miniature circuit breaker, pushing the rail base up and down within the transition slot to change the size of the slot opening, thus adapting to different sizes of mounting rail bases. This effectively solves the problem that the size of the slot on the back of the circuit breaker body is larger than the installation dimensions of the mounting rail bases, preventing the circuit breaker body from being installed with mounting rail bases of different sizes.

[0004] Based on the above research and existing technology, it has been found that circuit breaker bodies typically have a fixed slot one at one end and a movable slot two at the other end on the rear side wall, allowing for flexible mounting of the circuit breaker body onto guide rails of different sizes. While this allows for easy assembly and disassembly of the circuit breaker body, the engagement position of the circuit breaker body on the guide rail is not properly locked. This means that after the circuit breaker body is mounted on the mounting base, it may move left or right when subjected to external force or impact. Furthermore, due to the limited engagement force, the circuit breaker body may fall off the guide rail when subjected to external force, thus its usability needs improvement. Therefore, this utility model provides a miniature circuit breaker that is easy to assemble and disassemble. Utility Model Content

[0005] The technical problem solved by this utility model is that the locking position of the circuit breaker body on the guide rail is not limited and locked, and it may move left and right after being subjected to external force. The locking force is limited, and it may also fall off the guide rail when subjected to external force. The performance needs to be improved.

[0006] To solve the technical problem, the technical solution provided by this utility model is as follows: a small circuit breaker that is easy to assemble and disassemble, including a circuit breaker body and a mounting base. The bottom of the rear side wall of the circuit breaker body is provided with a snap-fit ​​groove 1 located below the mounting base. The top of the rear side wall of the circuit breaker body is slidably connected with a snap-fit ​​groove 2 located above the mounting base. A support part is provided between the top of the snap-fit ​​groove 2 and the circuit breaker body.

[0007] The second locking slot is hollow inside. The two sides of the second locking slot are symmetrically provided with locking parts for limiting and locking the circuit breaker body on the mounting base. The locking part includes a locking plate that is slidably connected to the inner top wall of the second locking slot. The side wall of the locking plate is provided with a locking rod that extends out of the second locking slot and passes through the mounting base.

[0008] Furthermore, the locking part also includes a pressure rod fixedly disposed on the side wall of the locking plate and extending through the second snap-fit ​​groove. The end of the pressure rod is provided with a handle, and a return spring is sleeved on the pressure rod and placed between the second snap-fit ​​groove and the handle.

[0009] Furthermore, the support includes a hollow block fixedly installed on the top of the rear side wall of the circuit breaker body, a sliding plate slidably connected inside the hollow block, a second return spring between the top wall of the hollow block and the top of the sliding plate, and a support rod extending through the hollow block and fixedly connected to the top of the second snap-fit ​​groove at the bottom of the sliding plate.

[0010] Furthermore, the hollow block is provided with symmetrical limiting rails on its two inner sidewalls that match the sidewalls of the sliding plate.

[0011] Furthermore, the mounting base is placed between the first and second snap-fit ​​grooves, and the top of the side wall of the mounting base is provided with a plurality of adjustment holes that match the locking rod at equal intervals.

[0012] Furthermore, the rear side wall of the circuit breaker body is provided with a limiting groove that matches the two side walls of the snap-fit ​​groove.

[0013] The beneficial effects of this utility model are:

[0014] With the combined action of the support and locking parts, the circuit breaker body can be easily disassembled and assembled. The installation position of the circuit breaker body can be easily adjusted as needed. The locking rod is inserted into the adjustment hole to securely lock the installation position, preventing the circuit breaker body from moving left or right due to external force or collision with foreign objects after it is stuck on the mounting base. Furthermore, the circuit breaker body will not fall off due to limited locking force when subjected to external force after it is stuck on the mounting base, greatly improving the performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0016] Figure 2This is a schematic diagram of the structure of the present invention. Figure 2 .

[0017] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 .

[0018] Figure 4 This is a partially enlarged view of the present invention.

[0019] Figure 5 This is a partial planar schematic diagram of the present invention.

[0020] 1. Circuit breaker body; 2. Mounting base; 3. Snap-fit ​​groove one; 4. Snap-fit ​​groove two; 5. Support part; 6. Locking part; 7. Locking plate; 8. Locking rod; 9. Pressure rod; 10. Return spring one; 11. Hollow block; 12. Slide plate; 13. Return spring two; 14. Support rod; 15. Limit rail; 16. Adjustment hole; 17. Limit groove. Detailed Implementation

[0021] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0022] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0023] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0024] According to the appendix Figure 1-4As shown: This utility model provides a small circuit breaker that is easy to assemble and disassemble: it includes a circuit breaker body 1 and a mounting base 2. The mounting base 2 is fixed to a wall or the side wall of a distribution box with screws. The bottom of the rear side wall of the circuit breaker body 1 is provided with a first snap-fit ​​groove 3 located below the mounting base 2. The top of the rear side wall of the circuit breaker body 1 is slidably connected with a second snap-fit ​​groove 4 located above the mounting base 2. The second snap-fit ​​groove 4 is hollow inside. The two sides of the second snap-fit ​​groove 4 are symmetrically provided with locking parts 6 for limiting and locking the circuit breaker body 1 onto the mounting base 2. The locking parts 6 cover... The locking part 6 includes a locking plate 7 that is slidably connected to the inner top wall of the second locking groove 4. The side wall of the locking plate 7 is provided with a locking rod 8 that passes through the second locking groove 4 and through the mounting base 2. The top of the side wall of the mounting base 2 is provided with a plurality of adjustment holes 16 that match the locking rod 8 at equal intervals. The locking part 6 also includes a pressure rod 9 that is fixedly installed on the side wall of the locking plate 7 and passes through the second locking groove 4. The pressure rod 9 is placed on both sides of the circuit breaker body 1 and above the locking rod 8. The end of the pressure rod 9 is provided with a handle. A return spring 10 is sleeved on the pressure rod 9 and placed between the second locking groove 4 and the handle.

[0025] Specifically, by holding the handles with both hands and pressing inwards, the pressure rod 9, locking plate 7, and locking rod 8 move inwards, compressing the return spring 10 until the locking rod 8 moves out of the adjustment hole 16. After the locking rod 8 moves out, it pushes the locking groove 4 on the mounting base 2, thereby allowing the circuit breaker body 1 to move to the appropriate position on the mounting base 2. At this time, the locking rod 8 is connected to the adjustment hole 16 at the corresponding position. When the handles are released, the return spring 10 rebounds and resets, thereby driving the pressure rod 9, locking plate 7, and locking rod 8 to move in the opposite direction. The locking rod 8 resets and inserts into the adjustment hole 16, thereby allowing the installation position of the circuit breaker body 1 to be easily adjusted as needed.

[0026] As per the instruction manual Figure 1 , 5 As shown: The mounting base 2 is placed between the first snap-fit ​​groove 3 and the second snap-fit ​​groove 4. The rear side wall of the circuit breaker body 1 is provided with a limiting groove 17 that matches the side wall of the second snap-fit ​​groove 4, which serves to limit the second snap-fit ​​groove 4. A support part 5 is provided between the top of the second snap-fit ​​groove 4 and the circuit breaker body 1. The support part 5 includes a hollow block 11 fixedly installed on the top of the rear side wall of the circuit breaker body 1. A sliding plate 12 is slidably connected inside the hollow block 11. The two inner side walls of the hollow block 11 are symmetrically provided with limiting rails 15 that match the side walls of the sliding plate 12, which serve to limit the sliding plate 12. A return spring 2 13 is provided between the inner top wall of the hollow block 11 and the top of the sliding plate 12. A support rod 14 is provided at the bottom of the sliding plate 12, which passes through the hollow block 11 and is fixedly connected to the top of the second snap-fit ​​groove 4.

[0027] Specifically, hold the handles with both hands and press them inward to move the locking rod 8 out of the adjustment hole 16. Then, hold the handles and move them upward, which will cause the second locking groove 4, the support rod 14, and the slide plate 12 to move upward. The second return spring 13 is in a compressed state until the second locking groove 4 moves above the mounting base 2, so that the second locking groove 4 can be removed from the mounting base 2, thus making it easy to disassemble the circuit breaker body 1.

[0028] The principle of this utility model

[0029] In use, the mounting base 2 is fixed to the wall or the side wall of the distribution box with screws. When installing the circuit breaker body 1, first place the lower part of the mounting base 2 into the first locking groove 3. Then, hold the handle with both hands and press inward to move the locking rod 8 into the second locking groove 4. The return spring 10 is compressed. Then, hold the handle and move it upward to move the second locking groove 4 upward. The return spring 13 is compressed until the second locking groove 4 moves above the mounting base 2. Then, hold the handle and slowly move it downward. The compressed return spring 13 rebounds and resets, causing the second locking groove 4 to move downward to the outside of the top of the mounting base 2. This allows the mounting base 2 to be locked between the first locking groove 3 and the second locking groove 4. Then, push the mounting base 2 upward. The second slot 4 allows the circuit breaker body 1 to be pushed to a suitable position on the mounting base 2. At this time, the locking rod 8 is connected to the corresponding adjustment hole 16. When the handle is released, the return spring 10 rebounds and resets, thereby driving the locking rod 8 to move in the opposite direction. The locking rod 8 is then inserted into the adjustment hole 16, allowing the installation position of the circuit breaker body 1 to be easily adjusted as needed. The installation position is firmly locked to prevent the circuit breaker body 1 from moving left or right due to external force or collision after being stuck on the mounting base 2. Furthermore, the circuit breaker body 1 will not fall off due to limited locking force when subjected to external force after being stuck on the mounting base 2. The disassembly operation is not complicated and is relatively convenient, greatly improving the performance.

[0030] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A miniature circuit breaker that is easy to assemble and disassemble, comprising a circuit breaker body (1) and a mounting base (2), wherein the bottom of the rear side wall of the circuit breaker body (1) is provided with a snap-fit ​​groove (3) located below the mounting base (2), characterized in that: The top of the rear side wall of the circuit breaker body (1) is slidably connected to a second snap-fit ​​groove (4) placed above the mounting base (2), and a support part (5) is provided between the top of the second snap-fit ​​groove (4) and the circuit breaker body (1); The second snap-fit ​​groove (4) is hollow inside. The second snap-fit ​​groove (4) is symmetrically provided on both sides for locking the circuit breaker body (1) on the mounting base (2). The locking part (6) includes a locking plate (7) that is slidably connected to the inner top wall of the second snap-fit ​​groove (4). The side wall of the locking plate (7) is provided with a locking rod (8) that passes through the second snap-fit ​​groove (4) and through the mounting base (2).

2. The miniature circuit breaker that is easy to assemble and disassemble according to claim 1, characterized in that: The locking part (6) also includes a pressure rod (9) fixedly disposed on the side wall of the locking plate (7) and passing through the second snap-fit ​​groove (4). The end of the pressure rod (9) is provided with a handle, and a return spring (10) is sleeved on the pressure rod (9) and placed between the second snap-fit ​​groove (4) and the handle.

3. The miniature circuit breaker that is easy to assemble and disassemble according to claim 1, characterized in that: The support part (5) includes a hollow block (11) fixedly installed on the top of the rear side wall of the circuit breaker body (1). A sliding plate (12) is slidably connected inside the hollow block (11). A reset spring (13) is provided between the top wall of the hollow block (11) and the top of the sliding plate (12). A support rod (14) is provided at the bottom of the sliding plate (12) that passes through the hollow block (11) and is fixedly connected to the top of the snap-fit ​​groove (4).

4. A miniature circuit breaker that is easy to assemble and disassemble according to claim 3, characterized in that: The hollow block (11) has symmetrically arranged limiting rails (15) on its two inner sidewalls that match the sidewall of the sliding plate (12).

5. A miniature circuit breaker that is easy to assemble and disassemble according to claim 1, characterized in that: The mounting base (2) is placed between the first snap-fit ​​groove (3) and the second snap-fit ​​groove (4). The top of the side wall of the mounting base (2) is provided with a plurality of adjustment holes (16) that match the locking rod (8).

6. A miniature circuit breaker that is easy to assemble and disassemble according to claim 1, characterized in that: The rear side wall of the circuit breaker body (1) is provided with a limiting groove (17) that matches the side wall of the second snap-fit ​​groove (4).

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