A leakage current test button mechanism

Abstract

This utility model discloses a leakage current test button mechanism, including a housing, within which a test button is disposed. Pressing the test button causes the power-taking rod on the test button to contact the stationary contact rod inside the housing, artificially creating a current imbalance to detect whether the circuit breaker has completed its tripping action. When the test button moves inward into the housing, the elastic part on the test button is compressed. When the external force applied to the test button disappears, the test button completes a reset action under the action of the elastic part. Compared with the prior art, this test button has a simpler structure while completing the reset action. Since it does not require additional components such as a reset spring, power-taking spring, and contact piece, the internal structure of the housing is simpler, reducing the manufacturing difficulty of the housing. The integration of the elastic part and the power-taking rod onto the test button makes the test button a single unit before assembly with the housing, which also facilitates the assembly of the test button.

Description

Technical Field

[0001] This utility model relates to the field of leakage current circuit breaker technology, specifically to a leakage current test button mechanism. Background Technology

[0002] Currently, residual current circuit breakers in the industry, such as the residual current circuit breaker with announcement number CN204857640U, mostly use contact plates and springs to draw power to their leakage test buttons. This type of circuit breaker requires multiple parts such as a test button, a reset spring, a power-drawing spring, contact plates, and leads, resulting in a complex structure, occupying more space, causing inconvenience in assembly, and also having excessively high costs. Utility Model Content

[0003] The purpose of this invention is to provide a leakage current test button mechanism to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a leakage current test button mechanism, including a housing, wherein a test button is provided inside the housing; pressing the test button causes the power-taking rod on the test button to contact the stationary contact rod inside the housing, thereby artificially creating a current imbalance and detecting whether the circuit breaker has completed its tripping action; when the test button moves into the housing, the elastic part on the test button is compressed; when the external force applied to the test button disappears, the test button completes its reset action under the action of the elastic part.

[0005] As a preferred technical solution of this utility model: one end of the elastic part is integrally formed on the test button, and the other end of the elastic part abuts against the housing.

[0006] As a preferred technical solution of this utility model: the elastic part is connected to the slot provided in the housing through the provided spherical part.

[0007] As a preferred technical solution of this utility model: the slot is located above the test button, and the elastic part is inclinedly disposed on the test button and is rotatably connected to the slot through the spherical part.

[0008] As a preferred technical solution of this utility model: the middle part of the elastic part also has a curved part, and the curved part is arc-shaped.

[0009] As a preferred technical solution of this utility model, the power-taking rod is movably connected to the connecting part provided on the test button.

[0010] As a preferred technical solution of this utility model: the power-collecting rod is a U-shaped snap ring structure, and its open end passes through the connecting part and is then locked onto the connecting part.

[0011] The beneficial effects of this utility model by adopting the above technical solution are as follows: when the test button is pressed, it drives the power-taking rod to contact the stationary contact rod, simulating the leakage state, and is used to test whether the leakage protection function is working properly. When the external force of pressing disappears, the elastic part causes the test button to reset. Therefore, compared with the prior art, the test button has a simpler structure while performing the above actions, and effectively solves the problems of a large number of mechanical parts, complex process, inconvenient assembly, and high cost. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure when the test button is located inside the housing;

[0013] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0014] Figure 3 This is an exploded view of the test button and power-collecting rod of this utility model.

[0015] In the diagram: 1. Housing; 2. Static contact rod; 3. Test button; 30. Connecting part; 31. Elastic part; 32. Spherical part; 33. Power take-up rod; 4. Slot. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0017] Please see Figure 1-3 This utility model provides an embodiment of a leakage current test button mechanism, including a housing 1, and a test button 3 is provided inside the housing 1; pressing the test button 3 causes the power-taking rod 33 on the test button 3 to contact the stationary contact rod 2 inside the housing 1, thereby artificially creating a current imbalance and detecting whether the circuit breaker has completed the tripping action; when the test button 3 moves into the housing 1, the elastic part 31 on the test button 3 is compressed; when the external force applied to the test button 3 disappears, the test button 3 completes the reset action under the action of the elastic part 31.

[0018] In summary, this test button can automatically reset under the action of the elastic part 31 while simulating leakage. Therefore, compared with existing technologies, this test button has a simpler structure while completing the reset action, and does not require additional components such as a reset spring, a power-taking spring, and contact plates. Because it eliminates the need for additional components such as a reset spring, a power-taking spring, and contact plates, firstly, the internal structure of the housing 1 is simpler; secondly, the manufacturing difficulty of the housing is reduced, which helps to reduce the production cost of the housing 1; and thirdly, when the power-taking rod 33 is installed on the test button 3, the test button 3 has a one-piece structure, thus simplifying the assembly of the test button 3.

[0019] To further reduce the manufacturing difficulty of the test button 3, one end of the elastic part 31 is integrally formed on the test button 3, and the other end of the elastic part 31 abuts against the housing 1. The elastic part 31 is made of the same material as the test button 3, but it is smaller in size and more prone to elastic deformation. This allows the test button 3 and the elastic part 31 to be integrally formed, further reducing the manufacturing difficulty and cost of the test button 3.

[0020] To enhance the adaptability of the elastic part 31, it is connected to a slot 4 within the housing 1 via a spherical part 32. The spherical part 32, when inserted into the slot 4, also limits one end of the elastic part 31, allowing it to store energy during compression. Therefore, when the test button 3 moves towards the stationary contact rod 2, the elastic part 31 deforms, and the spherical part 32 can rotate within the slot 4 during deformation. This ensures that the elastic part 31 undergoes deformation without obstruction or interference, facilitating a smoother deformation process.

[0021] To ensure that the elastic part 31 can store energy smoothly and that the test button 3 can be reset smoothly after energy storage, the slot 4 is located above the test button 3, and the elastic part 31 is inclinedly disposed on the test button 3 and is rotatably connected to the slot 4 through the spherical part 32. Furthermore, the elastic part 31 also has a curved part in the middle, and the curved part is arc-shaped.

[0022] Based on the above scheme, since the power-collecting pole 33 is movably connected to the connecting part 30 provided on the test button 3, the installation of the power-collecting pole 33 is simple and convenient.

[0023] Specifically, the power-collecting rod 33 is a U-shaped snap ring structure, with its open end passing through the connecting part 30 and then locking onto the connecting part 30.

[0024] In summary, the power-receiving pole 33 has the advantage of being easy to assemble and disassemble. Firstly, the power-receiving pole 33 can be pre-installed on the test button 3, and then the test button 3 can be installed on the housing 1, thus testing the assembly efficiency of the button 3 and the housing 1. Secondly, an electric arc is generated at the moment of contact and separation between the power-receiving pole 33 and the stationary contact rod 2, thus the power-receiving pole 33 has the advantage of being easy to assemble and disassemble, and the power-receiving pole 33 damaged by the electric arc can be replaced.

[0025] Specifically, the elastic part 31 and the power-taking rod 33 are integrated into the test button 3. When the test button 3 is used in the N pole of the integrated leakage current product, pressing the test button 3 causes the lower power-taking rod 33 to contact the stationary contact rod 2 to draw power. The signal is transmitted to the coil tripping system to achieve tripping. After the press is released, the elastic part 31 cooperates with the slot 4 of the housing 1 to generate a rebound force, causing the test button 3 to reset. This effectively solves the problems of a large number of parts, complex processes, inconvenient assembly, and high costs.

[0026] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A leakage current test button mechanism, characterized in that: Includes a housing (1), and a test button (3) is provided inside the housing (1); Pressing the test button (3) causes the power take-up rod (33) on the test button (3) to contact the stationary contact rod (2) inside the housing (1), thereby artificially creating a current imbalance and detecting whether the circuit breaker has completed the tripping action; When the test button (3) moves into the housing (1), the elastic part (31) on the test button (3) is compressed; when the external force applied to the test button (3) disappears, the test button (3) completes the reset action under the action of the elastic part (31).

2. The leakage current test button mechanism according to claim 1, characterized in that: One end of the elastic part (31) is integrally formed on the test button (3), and the other end of the elastic part (31) abuts against the housing (1).

3. The leakage current test button mechanism according to claim 2, characterized in that: The elastic part (31) is connected to the slot (4) provided in the housing (1) through the provided spherical part (32).

4. The leakage current test button mechanism according to claim 3, characterized in that: The slot (4) is located above the test button (3), and the elastic part (31) is inclinedly disposed on the test button (3) and is rotatably connected to the slot (4) through the spherical part (32).

5. The leakage current test button mechanism according to claim 4, characterized in that: The elastic part (31) also has a curved part in the middle, and the curved part is arc-shaped.

6. A leakage current test button mechanism according to any one of claims 1-5, characterized in that: The power-collecting pole (33) is movably connected to the connecting part (30) provided on the test button (3).

7. The leakage current test button mechanism according to claim 6, characterized in that: The power-collecting pole (33) is a U-shaped snap ring structure, with its open end passing through the connecting part (30) and then locking onto the connecting part (30).

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