A universal circuit breaker moving contact with a fixed structure and its installation method

Abstract

This invention discloses a universal circuit breaker moving contact with a fixed structure and its installation method, comprising a fixing component, a moving contact assembly, and a base. The fixing component fixes the moving contact assembly to the base. The fixing component consists of an elastic element, a washer, and a screw. The washer is fitted outside the screw, and the elastic element is fitted outside the screw and located below the washer, used to compensate for the installation gap between the screw and the moving contact assembly. This invention completes the fixed installation of the moving contact assembly and the base by sequentially fitting the elastic element and washer outside the screw. After the screw passes through the U-shaped groove and is installed on the aluminum bracket, the threaded section of the screw is rigidly connected to the base using a tool. At this time, the elastic element is in close contact with the aluminum bracket, effectively compensating for the installation gap caused by the low machining precision of the aluminum bracket. The structure is simple, the parts cost is low, and the installation is time-saving and labor-saving.

Description

Technical Field

[0001] This invention relates to the field of universal circuit breaker technology, specifically to a universal circuit breaker moving contact with a fixed structure and its installation method. Background Technology

[0002] Universal circuit breakers are important control components in power systems, primarily providing overload and short-circuit protection. They connect and disconnect the main circuit by opening and closing the moving contact assembly and the stationary contact assembly. The moving contact assembly is fixed to the base by a cylindrical, hollow I-beam component, which is then installed onto the aluminum bracket. A screw is then partially passed through the I-beam component and tightened to the base to complete the installation. However, the cylindrical, hollow I-beam component is a machined part, resulting in low processing efficiency, high component cost, and time-consuming and labor-intensive installation. Furthermore, after installation, the screw only secures the I-beam component to the base.

[0003] However, due to the low processing precision of the aluminum bracket, there is an installation gap between it and the I-shaped parts, which causes the moving contact assembly to be loosely fixed to the base. After energization, the moving contact assembly is prone to vibration, affecting the performance of the circuit breaker.

[0004] Therefore, it is necessary to invent a universal circuit breaker moving contact with a fixed structure and its installation method to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a universal circuit breaker moving contact with a fixed structure and its installation method. By sequentially placing an elastic element and a washer on the outside of a screw, and after the screw passes through the U-shaped groove and is installed on the aluminum bracket, the threaded section of the screw is rigidly connected to the base using a tool, thus completing the fixed installation of the moving contact assembly and the base. At this time, the elastic element is in close contact with the aluminum bracket, effectively offsetting the installation gap caused by the low machining accuracy of the aluminum bracket. The structure is simple, the parts cost is low, and the installation is time-saving and labor-saving, thus solving the above-mentioned shortcomings in the technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a universal circuit breaker moving contact with a fixed structure, comprising a fixing component, a moving contact assembly, and a base, wherein the fixing component fixes the moving contact assembly on the base;

[0007] The fixing assembly consists of an elastic element, a washer, and a screw. The washer is fitted outside the screw, and the elastic element is fitted outside the screw and located below the washer, to compensate for the installation gap between the screw and the moving contact assembly.

[0008] Preferably, the screw is composed of a cylindrical head, a cylindrical boss, and a threaded section in a straight line. The cylindrical head is connected to the cylindrical boss, and the diameter of the cylindrical boss is smaller than the diameter of the cylindrical boss. The threaded section is connected to the cylindrical boss, and the diameter of the threaded section is smaller than the diameter of the cylindrical boss.

[0009] Preferably, the inner ring of the gasket has a thread with the same thread size as the threaded section.

[0010] Preferably, the bottom end of the cylindrical head has a groove for accommodating the installation tool.

[0011] Preferably, the moving contact assembly includes a moving contact body and an aluminum bracket, wherein the aluminum bracket is disposed on the front side of the moving contact body.

[0012] Preferably, the aluminum bracket has a U-shaped through groove on the front side for screws to pass through and fix the aluminum bracket to the base.

[0013] Preferably, the elastic element is configured as a spring or a spring pad.

[0014] Preferably, the threaded section and the base are rigidly connected.

[0015] A method for installing the moving contact of a universal circuit breaker with a fixed structure includes the following steps:

[0016] (A) Fit the elastic element onto the cylindrical boss of the screw, and make it close to the cylindrical head. Then screw the washer down along the thread section so that it fits on the outside of the screw and is above the elastic element.

[0017] (B) Pass the screw through the U-shaped groove and install it on the aluminum bracket on the front side of the moving contact assembly, so that the U-shaped groove is in contact with the threaded section, and the U-shaped groove is located outside the threaded section of the screw between the elastic element and the washer.

[0018] (C) Install the moving contact assembly with the screws into the base, and use a tool to rigidly connect the threaded section of the screw to the base to complete the fixed installation of the moving contact assembly and the base.

[0019] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0020] This invention involves sequentially placing an elastic element and a washer on the outside of a screw, then passing the screw through a U-shaped groove and installing it on an aluminum bracket on the front side of the moving contact assembly. Finally, a tool is used to rigidly connect the threaded section of the screw to the base, completing the fixed installation of the moving contact assembly and the base. At this point, the elastic element and the aluminum bracket are in close contact, effectively offsetting the installation gap caused by the low machining precision of the aluminum bracket. The structure is simple, the parts cost is low, and the installation is time-saving and labor-saving. After installation, there is no installation gap between the moving contact assembly and the base, the moving contact assembly is firmly fixed, and it is not easily vibrated after being energized, thus ensuring that the performance of the circuit breaker is not affected. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the connection structure between the moving contact assembly and the fixed assembly of the present invention;

[0024] Figure 3 This is a schematic diagram of the fixed component structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the screw structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the aluminum support structure of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1 Fixed component, 2 Moving contact component, 3 Base, 11 Elastic element, 12 Washer, 13 Screw, 131 Cylindrical head, 132 Cylindrical boss, 133 Threaded section, 21 Aluminum bracket, 211 U-shaped through groove. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] This invention provides, for example Figure 1-5 The moving contact of a universal circuit breaker with a fixed structure shown includes a fixing component 1, a moving contact component 2 and a base 3, wherein the fixing component 1 fixes the moving contact component 2 on the base 3;

[0031] The fixing assembly 1 consists of an elastic element 11, a washer 12 and a screw 13. The washer 12 is sleeved on the outside of the screw 13, and the elastic element 11 is sleeved on the outside of the screw 13 and located below the washer 12, in order to offset the installation gap between the screw 13 and the moving contact assembly 2.

[0032] Furthermore, in the above technical solution, the screw 13 is composed of a cylindrical head 131, a cylindrical boss 132, and a threaded section 133 in a straight line. The cylindrical head is connected to the cylindrical boss 132, and the diameter of the cylindrical boss 132 is smaller than the diameter of the cylindrical boss 132. The threaded section 133 is connected to the cylindrical boss 132, and the diameter of the threaded section 133 is smaller than the diameter of the cylindrical boss 132. The threaded section 133 facilitates the screwing of the washer 12, and the cylindrical boss 132 can provide a support platform for the elastic element 11.

[0033] Furthermore, in the above technical solution, the inner ring of the gasket 12 is provided with a thread that is consistent with the thread size of the threaded section 133, which facilitates the screwing of the gasket 12.

[0034] Furthermore, in the above technical solution, the bottom end of the cylindrical head 131 is provided with a groove for accommodating the installation tool, which facilitates the installation of the screw 13 by the staff.

[0035] Furthermore, in the above technical solution, the moving contact assembly 2 includes a moving contact body and an aluminum bracket 21, wherein the aluminum bracket 21 is disposed on the front side of the moving contact body.

[0036] Furthermore, in the above technical solution, a U-shaped through groove 221 is provided on the front side of the aluminum bracket 21 for the screw 13 to pass through and fix the aluminum bracket 21 to the base 3.

[0037] Furthermore, in the above technical solution, the elastic element 11 is configured as a spring or a spring pad.

[0038] Furthermore, in the above technical solution, the threaded section 133 and the base 3 are rigidly connected.

[0039] A method for installing the moving contact of a universal circuit breaker with a fixed structure includes the following steps:

[0040] (A) Fit the elastic element 11 onto the cylindrical boss 132 of the screw 13 and fit it tightly against the cylindrical head 131. Screw the washer 12 downward along the threaded section 133 so that it fits on the outside of the screw 13 and is located above the elastic element 11.

[0041] (B) Pass the screw 13 through the U-shaped through groove 221 and install it on the aluminum bracket 21 on the front side of the moving contact assembly 2, and make the U-shaped through groove 221 contact the threaded section 133, and the U-shaped through groove 221 is located outside the threaded section 133 of the screw 13 between the elastic member 11 and the washer 12.

[0042] (C) Install the moving contact assembly 2 after mounting screw 13 into the base 3, and use a tool to rigidly connect the threaded section 133 of screw 13 to the base 3 to complete the fixed installation of the moving contact assembly 2 and the base 3.

[0043] Implementation Method: In use, the elastic element 11 and the washer 12 are sequentially placed on the outside of the screw 13, with a certain distance H between the washer 12 and the elastic element 11. Then, the screw 13 is passed through the U-shaped groove 221 and installed on the aluminum bracket 21 on the front side of the moving contact assembly 2, with the aluminum bracket 21 at the U-shaped groove 221 located outside the threaded section 133 within H. The moving contact assembly 2 is then installed into the base 3, and the threaded section 133 of the screw 13 is rigidly connected to the base 3 using a tool, thus completing the fixed installation of the moving contact assembly 2 and the base 3. At this time, the elastic element 11 and the aluminum bracket 21 are in close contact, effectively offsetting the installation gap caused by the low machining accuracy of the aluminum bracket 21. The structure is simple, the part cost is low, and the installation is time-saving and labor-saving. This implementation method specifically solves the problem in the prior art that due to the low machining accuracy of the aluminum bracket 21, there is an installation gap between it and the I-shaped part, which leads to the moving contact assembly 2 not being firmly fixed to the base 3, and the moving contact assembly 2 easily vibrating after being energized, affecting the performance of the circuit breaker.

[0044] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A universal circuit breaker moving contact with a fixed structure, characterized in that: It includes a fixing component (1), a moving contact component (2) and a base (3), wherein the fixing component (1) fixes the moving contact component (2) on the base (3); The fixing assembly (1) consists of an elastic element (11), a washer (12) and a screw (13). The washer (12) is fitted outside the screw (13), and the elastic element (11) is fitted outside the screw (13) and located below the washer (12) to offset the installation gap between the screw (13) and the moving contact assembly (2). The screw (13) is composed of a cylindrical head (131), a cylindrical boss (132) and a threaded section (133) in a straight line. The cylindrical head (131) is connected to the cylindrical boss (132), and the diameter of the cylindrical boss (132) is smaller than the diameter of the cylindrical head (131). The threaded section (133) is connected to the cylindrical boss (132), and the diameter of the threaded section (133) is smaller than the diameter of the cylindrical boss (132). The inner ring of the gasket (12) has a thread with the same thread size as the threaded section (133); The bottom end of the cylindrical head (131) is provided with a groove for accommodating the installation tool; The moving contact assembly (2) includes a moving contact body and an aluminum bracket (21), wherein the aluminum bracket (21) is disposed on the front side of the moving contact body; The aluminum bracket (21) has a U-shaped through groove (221) on the front side for screws (13) to pass through and fix the aluminum bracket (21) to the base (3); The elastic element (11) is configured as a spring or a spring pad; The threaded section (133) and the base (3) are rigidly connected; The installation method of the moving contact of the universal circuit breaker with a fixed structure includes the following steps: (A) Fit the elastic element (11) onto the cylindrical boss (132) of the screw (13) and fit it tightly against the cylindrical head (131), and screw the washer (12) down along the thread section (133) so that it fits on the outside of the screw (13) and is above the elastic element (11). (B) Pass the screw (13) through the U-shaped through groove (221) and install it on the aluminum bracket (21) on the front side of the moving contact assembly (2), and make the U-shaped through groove (221) contact the threaded section (133), and the U-shaped through groove (221) is located outside the threaded section (133) of the screw (13) between the elastic element (11) and the washer (12); (C) Install the moving contact assembly (2) after mounting the screw (13) into the base (3), and use a tool to rigidly connect the threaded section (133) of the screw (13) to the base (3) to complete the fixed installation of the moving contact assembly (2) and the base (3).

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