Terminal cover of circuit breaker

Abstract

The utility model relates to the technical field of circuit breakers, and discloses a terminal cover of a circuit breaker, which comprises a circuit breaker shell, a wiring terminal is arranged in the circuit breaker shell, a first terminal cover is arranged on the left side of the circuit breaker shell, and a second terminal cover is arranged on the right side of the circuit breaker shell. A connecting assembly is arranged between the first terminal cover and the second terminal cover, the connecting assembly comprises fixing rods fixedly connected to the two sides of the second terminal cover, clamping grooves are uniformly formed in the surface of one end of each fixing rod, connecting sleeves are fixedly connected to the two sides of the first terminal cover, limiting sleeves are slidably connected to the interiors of the connecting sleeves, and the limiting sleeves are slidably connected to the interiors of the limiting sleeves. A spring is fixedly connected between one side of the limiting sleeve and the inner wall of the connecting sleeve, and a connecting groove is formed in the limiting sleeve. According to the utility model, through the arrangement of the connecting assembly, when the wiring of the circuit breaker terminal fails, the terminal cover can be rapidly disassembled to observe the wiring condition of the internal terminal.

Description

Technical Field

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

[0002] The terminals of the circuit breaker are used to connect the circuit breaker and the power line. They can provide overload and short circuit protection. According to their functions and uses, the circuit breaker terminals can be divided into: neutral wire terminal, marked as N, used to connect the neutral wire to ensure the normal operation of the circuit and the safe grounding of the neutral wire; ground wire terminal, used to connect the ground wire of the circuit to ensure safe grounding and prevent electric shock accidents;

[0003] The terminals of the circuit breaker need to use terminal covers. The function of the terminal covers is to protect the circuit breaker terminals, ensure their normal service life, and prevent electric shock accidents. By installing terminal covers, arcs and dust can be effectively isolated, thereby improving the safety and reliability of the circuit breaker.

[0004] The existing terminal cover is fixed to the terminal by bolts. When the wiring of the circuit breaker terminal fails, the terminal cover needs to be quickly removed to observe the wiring status of the internal terminal. However, the existing terminal cover is fixed to the terminal by bolts, so it is not convenient to quickly remove it. Therefore, a terminal cover for a circuit breaker is proposed to solve the above problem. Utility Model Content

[0005] In order to remedy the above deficiencies, the present invention provides a terminal cover for a circuit breaker, aiming to improve the problem in the prior art that the existing terminal cover is fixed to the terminal by bolts and is not convenient for quick disassembly.

[0006] In order to achieve the above-mentioned object, the utility model adopts the following technical scheme: a terminal cover of a circuit breaker comprises a circuit breaker housing, a wiring terminal is arranged inside the circuit breaker housing, a first terminal cover is arranged on the left side of the circuit breaker housing, a second terminal cover is arranged on the right side of the circuit breaker housing, a connecting assembly is arranged between the first terminal cover and the second terminal cover, the connecting assembly comprises a fixing rod fixedly connected to both sides of the second terminal cover, a card groove is evenly provided on one end surface of the fixing rod, a connecting sleeve is fixedly connected to both sides of the first terminal cover, a limiting sleeve is slidably connected to the interior of the connecting sleeve, a spring is fixedly connected between one side of the limiting sleeve and the inner wall of the connecting sleeve, a connecting groove is provided inside the limiting sleeve, a limiting groove is provided inside the limiting sleeve, a clamping ring is fixedly connected between the inner walls of the connecting sleeve, a clamping hole is evenly provided on the surface of the clamping ring, a steel ball is movably connected to the inside of the clamping hole, a button is fixedly connected to the surface of the limiting sleeve, a sliding groove is provided on the surface of the connecting sleeve, and a buckle is fixedly connected to the bottom of the first terminal cover and the second terminal cover;

[0007] As a further description of the above technical solution: a heat dissipation assembly is provided on the surface of the first terminal cover and the second terminal cover, and the heat dissipation assembly includes a first heat dissipation hole fixedly opened on the top surface of the first terminal cover and the second terminal cover, and a second heat dissipation hole is fixedly opened on the side surface of the first terminal cover and the second terminal cover;

[0008] As a further description of the above technical solution: the clamping groove and the steel ball are adapted to each other, and the limiting sleeve is slidably connected to the groove inside the connecting sleeve;

[0009] As a further description of the above technical solution: the sizes of the connecting groove and the fixing rod are adapted to each other, and the diameter of the limiting groove is larger than the diameter of the connecting groove;

[0010] As a further description of the above technical solution: the limiting groove is opened on the left side of the connecting groove, and the diameter of the clamping hole is smaller than the diameter of the steel ball;

[0011] As a further description of the above technical solution: the diameter of the collar is larger than the diameter of the fixing rod, and the button is slidably connected to the inside of the slide groove;

[0012] As a further description of the above technical solution: the button is used to control the movement of the limit sleeve, and the spring is used to reset the limit sleeve;

[0013] As a further description of the above technical solution: the first heat dissipation hole and the second heat dissipation hole are both opened at corresponding positions of the wiring terminal.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the present invention, by providing a connection assembly, when a wiring fault occurs in the circuit breaker terminal, it is necessary to quickly remove the terminal cover to observe the wiring condition of the internal terminal. Simply move a button to separate the first terminal cover and the second terminal cover from the circuit breaker housing. This allows the terminal cover to be quickly removed to observe the wiring condition of the internal terminal when a wiring fault occurs in the circuit breaker terminal.

[0016] 2. In the present invention, the mesh arrangement of the first heat dissipation holes and the second heat dissipation holes provided in the heat dissipation assembly allows the first terminal cover and the second terminal cover to protect the terminal blocks while also dissipating the heat emitted by the terminal blocks. At the same time, the arrangement of the mesh holes prevents the terminal blocks from being directly exposed to the air, thereby reducing the oxidation of the terminal blocks and indirectly increasing the service life of the terminal blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of the terminal cover of the circuit breaker proposed by the present invention;

[0018] Figure 2 This is a schematic structural diagram of the buckle of the terminal cover of the circuit breaker proposed in the present invention;

[0019] Figure 3 This is a structural schematic diagram of the connection sleeve of the terminal cover of the circuit breaker proposed by the present invention;

[0020] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0021] Legend:

[0022] 1. Circuit breaker housing; 2. Terminal blocks; 3. First terminal cover; 4. Second terminal cover; 5. Connecting assembly; 51. Fixing rod; 52. Slot; 53. Connecting sleeve; 54. Limiting sleeve; 55. Spring; 56. Connecting groove; 57. Limiting groove; 58. Clamping ring; 59. Clamping hole; 510. Steel ball; 511. Button; 512. Slide; 513. Buckle; 6. Heat dissipation assembly; 61. First heat dissipation hole; 62. Second heat dissipation hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Reference Figures 1-4The utility model provides an embodiment: it includes a circuit breaker housing 1, a wiring terminal 2 is arranged inside the circuit breaker housing 1, a first terminal cover 3 is arranged on the left side of the circuit breaker housing 1, and a second terminal cover 4 is arranged on the right side of the circuit breaker housing 1. A connecting component 5 is provided between the first terminal cover 3 and the second terminal cover 4, and the connecting component 5 includes a fixing rod 51 fixedly connected to both sides of the second terminal cover 4, and a card groove 52 is evenly opened on one end surface of the fixing rod 51. The two sides of the first terminal cover 3 are fixedly connected with a connecting sleeve 53, and the internal sliding connection of the connecting sleeve 53 is limited. A spring 55 is fixedly connected between one side of the limiting sleeve 54 and the inner wall of the connecting sleeve 53, and a connecting groove 56 is opened inside the limiting sleeve 54. The limiting sleeve 54 has a limited opening inside. A clamping ring 58 is fixedly connected between the positioning groove 57 and the inner wall of the connecting sleeve 53. Clamping holes 59 are evenly opened on the surface of the clamping ring 58. Steel balls 510 are movably connected inside the clamping holes 59. A button 511 is fixedly connected to the surface of the limiting sleeve 54. A sliding groove 512 is opened on the surface of the connecting sleeve 53. The bottoms of the first terminal cover 3 and the second terminal cover 4 are fixedly connected with buckles 513. Through the provided connecting component 5, when the wiring of the circuit breaker terminal fails, it is necessary to quickly remove the terminal cover to observe the wiring status of the internal terminals. It is only necessary to move the button 511 to separate the first terminal cover 3 and the second terminal cover 4 from the circuit breaker housing 1, so that when the wiring of the circuit breaker terminal fails, the terminal cover can be quickly removed to observe the wiring status of the internal terminals.

[0025] Reference Figures 1-4 The surfaces of the first terminal cover 3 and the second terminal cover 4 are provided with a heat dissipation component 6, and the heat dissipation component 6 includes a first heat dissipation hole 61 fixedly opened on the top surface of the first terminal cover 3 and the second terminal cover 4, and a second heat dissipation hole 62 fixedly opened on the side surface of the first terminal cover 3 and the second terminal cover 4. The card slot 52 and the steel ball 510 are adapted to each other, and the limiting sleeve 54 is slidably connected to the inside of the groove inside the connecting sleeve 53. The size of the connecting groove 56 and the fixing rod 51 are adapted to each other. The diameter of the limiting groove 57 is larger than the diameter of the connecting groove 56. The limiting groove 57 is opened on the left side of the connecting groove 56. The diameter of the card hole 59 is smaller than the diameter of the steel ball 510, and the diameter of the clamping ring 58 is larger than the diameter of the fixing rod 51. The button 511 is slidably connected to the inside of the slide groove 512. The button 511 is used to control the movement of the limit sleeve 54. The spring 55 is used to reset the limit sleeve 54. The first heat dissipation hole 61 and the second heat dissipation hole 62 are both opened at corresponding positions of the terminal 2. Through the mesh setting of the first heat dissipation hole 61 and the second heat dissipation hole 62 set in the heat dissipation component 6, the first terminal cover 3 and the second terminal cover 4 can protect the terminal 2 while also dissipating the heat dissipated by the terminal 2. At the same time, through the setting of the mesh holes, the terminal 2 will not be directly exposed to the air, thereby reducing the oxidation of the terminal 2 and indirectly increasing the service life of the terminal 2.

[0026] Working principle: When the wiring of the circuit breaker terminal fails and it is necessary to quickly remove the terminal cover to observe the wiring status of the internal terminal, first push the button 511 in the direction of the connecting sleeve 53. At this time, the button 511 slides in the slide groove 512. Since the button 511 is fixedly connected to the surface of the limit sleeve 54, the limit sleeve 54 is driven to move. The limit sleeve 54 compresses the spring 55, and the limit sleeve 54 drives the connecting groove 56 to separate from the surface of the steel ball 510, so that the limit groove 57 is located on the surface of the steel ball 510, and the steel ball 510 is released from the restriction. At this time, the first terminal cover 3 and the second terminal cover 4 are pulled out to both sides, so that the steel ball 510 is separated from the card slot 52, so that when the wiring of the circuit breaker terminal fails, the terminal cover can be quickly removed to observe the wiring status of the internal terminal.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A terminal cover for a circuit breaker, comprising a circuit breaker housing (1), characterized in that: A connection terminal (2) is provided inside the circuit breaker housing (1), a first terminal cover (3) is provided on the left side of the circuit breaker housing (1), a second terminal cover (4) is provided on the right side of the circuit breaker housing (1), and a connecting assembly (5) is provided between the first terminal cover (3) and the second terminal cover (4); The connecting assembly (5) comprises a fixing rod (51) fixedly connected to both sides of the second terminal cover (4), a card slot (52) is evenly opened on one end surface of the fixing rod (51), a connecting sleeve (53) is fixedly connected to both sides of the first terminal cover (3), the interior of the connecting sleeve (53) is slidably connected to a limiting sleeve (54), a spring (55) is fixedly connected between one side of the limiting sleeve (54) and the inner wall of the connecting sleeve (53), a connecting groove (56) is opened inside the limiting sleeve (54), and the limiting sleeve (54) is fixedly connected to the inner wall of the connecting sleeve (53). A limiting groove (57) is provided inside the positioning sleeve (54), a clamping ring (58) is fixedly connected between the inner walls of the connecting sleeve (53), a clamping hole (59) is evenly provided on the surface of the clamping ring (58), a steel ball (510) is movably connected inside the clamping hole (59), a button (511) is fixedly connected to the surface of the limiting sleeve (54), a sliding groove (512) is provided on the surface of the connecting sleeve (53), and a buckle (513) is fixedly connected to the bottom of the first terminal cover (3) and the second terminal cover (4).

2. The terminal cover of the circuit breaker according to claim 1, characterized in that: The surfaces of the first terminal cover (3) and the second terminal cover (4) are arranged on a heat dissipation assembly (6), and the heat dissipation assembly (6) comprises a first heat dissipation hole (61) fixedly opened on the top surface of the first terminal cover (3) and the second terminal cover (4), and a second heat dissipation hole (62) fixedly opened on the side surface of the first terminal cover (3) and the second terminal cover (4).

3. The terminal cover of the circuit breaker according to claim 1, wherein: The clamping groove (52) and the steel ball (510) are adapted to each other, and the limiting sleeve (54) is slidably connected to the inside of the groove inside the connecting sleeve (53).

4. The terminal cover of the circuit breaker according to claim 1, wherein: The sizes of the connecting groove (56) and the fixing rod (51) are adapted to each other, and the diameter of the limiting groove (57) is larger than the diameter of the connecting groove (56).

5. The terminal cover of the circuit breaker according to claim 1, characterized in that: The limiting groove (57) is opened on the left side of the connecting groove (56), and the diameter of the clamping hole (59) is smaller than the diameter of the steel ball (510).

6. The terminal cover of the circuit breaker according to claim 1, wherein: The diameter of the collar (58) is larger than the diameter of the fixing rod (51), and the button (511) is slidably connected inside the sliding groove (512).

7. The terminal cover of the circuit breaker according to claim 1, wherein: The button (511) is used to control the movement of the limiting sleeve (54), and the spring (55) is used to reset the limiting sleeve (54).

8. The terminal cover of the circuit breaker according to claim 2, wherein: The first heat dissipation hole (61) and the second heat dissipation hole (62) are both provided at corresponding positions of the connection terminal (2).

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