A terminal cover for a circuit breaker

Abstract

This utility model relates to the field of low-voltage electrical appliance technology and discloses a terminal cover for a circuit breaker, including a protective cover. The lower end of the protective cover is provided with a disassembly mechanism, and the interior of the protective cover is provided with a splicing mechanism. The disassembly mechanism includes a base plate and a plug block. The base plate is disposed inside the protective cover, and the circuit breaker body is fixedly connected to the side wall of the base plate. The side wall of the plug block is fixedly connected to the side wall of the protective cover. A cavity is formed inside the base plate, and a support plate is fixedly connected to the inner wall of the base plate. A plug rod is disposed inside the base plate, and a spring is sleeved on the side wall of the plug rod. In this utility model, when disassembling the protective cover, pressing the pressure plate on the side wall of the base plate causes the plug rod to move into the cavity, thereby tightening the spring and causing the limiting block on the plug rod to move inward. Then, the slider on the protective cover can be pulled out. This structure improves the problems of cleaning and inconvenient replacement of the protective cover, realizing the function of disassembling the protective cover.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to a terminal cover for a circuit breaker. Background Technology

[0002] In power distribution systems, circuit breaker terminal protection is of paramount importance. Terminal covers used in circuit breakers are key protective components. Applied at the incoming and outgoing terminals, they can isolate contaminants such as dust and moisture, prevent electric shock and short circuit faults, and ensure the stable operation of circuit breakers. They are widely used in electrical systems such as industrial power distribution, civil buildings, and new energy.

[0003] Existing terminal covers have certain advantages: they are mostly made of plastics with excellent insulation properties, meeting basic safety protection requirements; some are fixed by clips or screws, making them securely connected to the circuit breaker and not easily detached due to slight vibration; and they have simple structures, mature manufacturing processes, and low costs, making them suitable for mass production and widely used.

[0004] However, the existing structure has obvious drawbacks: First, the protection is not comprehensive, with gaps between the side and the circuit breaker body, allowing dust and moisture to easily enter and affecting the conductivity of the terminals; second, installation and disassembly are inconvenient, requiring tools for screw fixing, which is cumbersome and time-consuming, reducing maintenance efficiency; third, the adaptability is poor, as it is mostly designed for specific models and is difficult to adapt to various circuit breakers, increasing selection and inventory costs; fourth, the structural strength is insufficient, with some low-cost products having thin walls that are easily deformed and broken by impact and compression, losing their protective function. Therefore, a terminal cover for circuit breakers is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a terminal cover for circuit breakers, aiming to improve the problems of inconvenient installation and disassembly and poor adaptability in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a terminal cover for a circuit breaker, comprising a protective cover, wherein a disassembly mechanism is provided at the lower end of the protective cover, and a splicing mechanism is provided inside the protective cover;

[0007] The disassembly mechanism includes a base plate and a plug block. The base plate is located inside the protective cover. A circuit breaker body is fixedly connected to the side wall of the base plate. The side wall of the plug block is fixedly connected to the side wall of the protective cover. A cavity is opened inside the base plate. A support plate is fixedly connected to the inner wall of the base plate. A plug rod is provided inside the base plate. A spring is sleeved on the side wall of the plug rod. One end of the spring is fixedly connected to the side wall of the support plate. The other end of the spring is fixedly connected to the side wall of the plug rod. A limit block is fixedly connected to the side wall of the plug rod. A pressure plate is fixedly connected to one end of the plug rod.

[0008] As a further description of the above technical solution:

[0009] The insertion rod and the side wall of the pressure plate are both slidably connected inside the cavity.

[0010] As a further description of the above technical solution:

[0011] The insert rod sidewall is slidably connected to the inside of the support plate, the bottom plate sidewall has a slot, and the insert block sidewall is slidably connected to the inside of the slot.

[0012] As a further description of the above technical solution:

[0013] The splicing mechanism includes a slider and a second limiting block. The side wall of the slider is fixedly connected to the side wall of the protective cover. The side wall of the slider has an insertion hole. The side wall of the protective cover is provided with a splicing cover. The second limiting block is located inside the splicing cover.

[0014] As a further description of the above technical solution:

[0015] The splicing cover has a cavity two inside, and the limiting block two is slidably connected inside the cavity two.

[0016] As a further description of the above technical solution:

[0017] The splicing cover has a groove on its side wall, and the slider is slidably connected inside the groove. Both the protective cover and the splicing cover have heat dissipation holes on their side walls. The protective cover has a port inside, and the side wall of the port is fixedly connected to the side wall of the base plate.

[0018] As a further description of the above technical solution:

[0019] The splicing cover is equipped with a second spring. One end of the second spring is fixedly connected to the inside of the cavity, and the other end of the second spring is fixedly connected to the side wall of the limit block. A switch is fixedly connected to the side wall of the circuit breaker body. Ports are provided on both sides of the circuit breaker body.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, when disassembling the protective cover, press the pressure plate on the side wall of the bottom plate to make the insertion rod move into the cavity, thereby causing the spring to tighten inward and driving the limiting block on the insertion rod to move inward. At this time, the slider on the protective cover can be pulled out. The above structure improves the problem of cleaning and inconvenient replacement of the protective cover and realizes the function of disassembling the protective cover.

[0022] 2. In this utility model, when splicing the protective cover, the slider on the protective cover is slidable so that it slides into the groove of the splicing cover. At the same time, under the action of force, the limiting block two moves inward, driving the spring two in the cavity two to tighten inward. When the limiting block two enters the insertion hole in the slider, the splicing is completed. The above structure improves the problem of the protective cover not matching the number of ports and realizes the function of splicing the number of protective covers. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a terminal cover for a circuit breaker proposed in this utility model;

[0024] Figure 2 This is a side perspective three-dimensional schematic diagram of a terminal cover for a circuit breaker proposed in this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of a disassembly mechanism for a terminal cover of a circuit breaker proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the splicing mechanism for the terminal cover of a circuit breaker proposed in this utility model;

[0027] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 6 for Figure 1 Enlarged view of point B in the middle.

[0029] Legend:

[0030] 1. Protective cover; 2. Circuit breaker body; 3. Base plate; 4. Insert block; 5. Pressure plate; 6. Insert rod; 7. Spring 1; 8. Limiting block 1; 9. Support plate; 10. Cavity 1; 11. Splicing cover; 12. Cavity 2; 13. Spring 2; 14. Limiting block 2; 15. Groove; 16. Slider; 17. Heat dissipation hole; 18. Switch; 19. Port; 20. Socket. Detailed Implementation

[0031] 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.

[0032] Reference Figures 3-5This utility model provides an embodiment of a terminal cover for a circuit breaker, comprising a protective cover 1. A disassembly mechanism is provided at the lower end of the protective cover 1, which enables quick assembly and disassembly between the protective cover 1 and the circuit breaker body 2, facilitating later inspection and maintenance. An assembly mechanism is provided inside the protective cover 1, which adjusts the internal partition space of the protective cover 1 according to the actual distribution of terminals, adapting to different terminal layouts. The disassembly mechanism includes a base plate 3 and a plug block 4. The base plate 3 is disposed inside the protective cover 1, and the circuit breaker body 2 is fixedly connected to the side wall of the base plate 3. The side wall of the plug block 4 is fixedly connected to the side wall of the protective cover 1. The insert 4 is used to engage with the slot on the base plate 3 to initially position the protective cover 1, thereby limiting the lateral displacement of the protective cover 1. The base plate 3 has an internal cavity 10 to accommodate the support plate 9, insert rod 6, spring 7, and other components, providing space for their movement and ensuring the normal operation of the disassembly mechanism. The support plate 9 is fixedly connected to the inner wall of the base plate 3, supporting the insert rod 6 and guiding its movement direction to ensure stable sliding along a straight line. The insert rod 6 is installed inside the base plate 3 and is inserted into the corresponding hole in the insert 4 to fix the protective cover 1 to the base plate 3. This achieves the effect of preventing the protective cover 1 from accidentally falling off; a spring 7 is sleeved on the side wall of the insertion rod 6, which is used to push the insertion rod 6 to reset when it is not subjected to external force, thus achieving the effect of automatically locking the insertion block 4; one end of the spring 7 is fixedly connected to the side wall of the support plate 9, and the other end of the spring 7 is fixedly connected to the side wall of the insertion rod 6. A limit block 8 is fixedly connected to the side wall of the insertion rod 6, which is used to limit the sliding stroke of the insertion rod 6 and prevent the insertion rod 6 from disengaging from the cavity 10, thereby ensuring the integrity of the mechanism; a pressure plate 5 is fixedly connected to one end of the insertion rod 6; the pressure plate 5 is used for the operator to apply external force to facilitate the movement of the insertion rod 6, thereby facilitating operation. The insert rod 6 and the pressure plate 5 are both slidably connected to the inside of the cavity 10. The side wall of the insert rod 6 is slidably connected to the inside of the support plate 9. The insert rod 6, in conjunction with the spring 7 and the pressure plate 5, performs reciprocating sliding motion. When the pressure plate 5 is pressed, the insert rod 6 compresses the spring 7 and disengages from the insert block 4. At this time, the protective cover 1 can be removed. When the pressure plate 5 is released, the spring 7 pushes the insert rod 6 to reset and insert it into the insert block 4, thereby fixing the protective cover 1 and achieving the effect of quick disassembly and assembly of the protective cover 1. The side wall of the base plate 3 has a slot, and the side wall of the insert block 4 is slidably connected to the inside of the slot. The slot is used to accommodate the insert block 4 and provide a position for the insertion of the insert block 4, thereby achieving the effect of initial positioning of the protective cover 1.

[0033] Reference Figures 1-6The splicing mechanism includes a slider 16 and a second limiting block 14. The side wall of the slider 16 is fixedly connected to the side wall of the protective cover 1. The side wall of the slider 16 has an insertion hole 20 for the second limiting block 14 to be inserted, thereby fixing the slider 16 and the splicing cover 11 and preventing them from sliding relative to each other. The side wall of the protective cover 1 is provided with a splicing cover 11, which is used to splice with the protective cover 1 to expand the protection range and meet the protection requirements of different numbers of terminals. The second limiting block 14 is located inside the splicing cover 11. The second limiting block 14 is inserted into the insertion hole 20 to fix the protective cover 1 and the splicing cover 11. The positioning is fixed to ensure the stability of the structure after splicing; a cavity 12 is opened inside the splicing cover 11, and a limiting block 14 is slidably connected inside the cavity 12; the cavity 12 is used to accommodate the limiting block 14 and the spring 13, providing space for their movement and ensuring the normal operation of the splicing mechanism; a groove 15 is opened on the side wall of the splicing cover 11, which is used to accommodate the slider 16 and provide a track for the slider 16 to slide, thus guiding the relative movement of the protective cover 1 and the splicing cover 11; the slider 16 is slidably connected inside the groove 15, and both the protective cover 1 and the splicing cover 11 have grooves on their side walls. The device has heat dissipation holes 17, which dissipate the heat generated by the circuit breaker terminals during operation, preventing heat accumulation from affecting the normal operation of the equipment. The protective cover 1 has a port 19 inside, which is used for wire connection, facilitating the connection of the circuit breaker to external circuits and ensuring smooth circuit operation. The side wall of port 19 is fixedly connected to the side wall of the base plate 3. The splicing cover 11 has a second spring 13 inside, which pushes the second limit block 14 to reset, keeping it inserted into the socket 20, achieving an automatic locking effect. One end of the second spring 13 is fixedly connected inside the cavity 12. The other end of spring 13 is fixedly connected to the side wall of limit block 14. Limit block 14 moves in conjunction with spring 13 and socket 20. When limit block 14 is pushed to compress spring 13, it disengages from socket 20, and slider 16 can slide in groove 15. After being released, spring 13 pushes limit block 14 to insert into socket 20, thus fixing it and achieving flexible adjustment of splicing length. Switch 18 is fixedly connected to the side wall of circuit breaker body 2. Ports 19 are provided on both sides of circuit breaker body 2. The ports 19 are symmetrically distributed to facilitate the connection of wires from both sides, thereby improving wiring flexibility.

[0034] Working principle: When using this device, first observe the number of ports 19 on the circuit breaker body 2, and then splice the protective cover 1. Slide the slider 16 on the protective cover 1 so that the slider 16 enters the groove 15 of the splicing cover 11 and slides. At the same time, under the action of force, the second limiting block 14 moves inward, which in turn causes the second spring 13 in the cavity 12 to tighten inward. When the second limiting block 14 enters the insertion hole 20 in the slider 16, the splicing is completed.

[0035] Once the protective cover 1 is assembled, pressing the pressure plate 5 on the side wall of the base plate 3 causes the insertion rod 6 to move into the cavity 10, which in turn causes the spring 7 to tighten inward, thereby causing the limiting block 8 on the insertion rod 6 to move inward. At this time, the insertion block 4 on the sliding protective cover 1 enters the cavity 10, and the pressure plate 5 is released, causing the spring 7 to reset and the limiting block 8 to lock into the insertion block 4. Conversely, when disassembling the protective cover 1, pressing the pressure plate 5 causes the spring 7 to contract, and then pulling out the insertion block 4 completes the disassembly.

Claims

1. A terminal cover for a circuit breaker, comprising a protective cover (1), characterized in that: The lower end of the protective cover (1) is provided with a disassembly mechanism, and the interior of the protective cover (1) is provided with a splicing mechanism; The disassembly mechanism includes a base plate (3) and a plug (4). The base plate (3) is located inside the protective cover (1). A circuit breaker body (2) is fixedly connected to the side wall of the base plate (3). The side wall of the plug (4) is fixedly connected to the side wall of the protective cover (1). A cavity (10) is opened inside the base plate (3). A support plate (9) is fixedly connected to the inner wall of the base plate (3). A plug (6) is provided inside the base plate (3). A spring (7) is sleeved on the side wall of the plug (6). One end of the spring (7) is fixedly connected to the side wall of the support plate (9). The other end of the spring (7) is fixedly connected to the side wall of the plug (6). A limit block (8) is fixedly connected to the side wall of the plug (6). A pressure plate (5) is fixedly connected to one end of the plug (6).

2. A terminal cover for a circuit breaker according to claim 1, characterized in that: The insert rod (6) and the pressure plate (5) are slidably connected to the inside of cavity one (10).

3. A terminal cover for a circuit breaker according to claim 1, characterized in that: The side wall of the insertion rod (6) is slidably connected to the inside of the support plate (9), the side wall of the bottom plate (3) is provided with a slot, and the side wall of the insertion block (4) is slidably connected to the inside of the slot.

4. A terminal cover for a circuit breaker according to claim 1, characterized in that: The splicing mechanism includes a slider (16) and a second limiting block (14). The side wall of the slider (16) is fixedly connected to the side wall of the protective cover (1). The side wall of the slider (16) is provided with an insertion hole (20). The side wall of the protective cover (1) is provided with a splicing cover (11). The second limiting block (14) is located inside the splicing cover (11).

5. A terminal cover for a circuit breaker according to claim 4, characterized in that: The splicing cover (11) has a cavity two (12) inside, and the limiting block two (14) is slidably connected inside the cavity two (12).

6. A terminal cover for a circuit breaker according to claim 4, characterized in that: The splicing cover (11) has a groove (15) on its side wall, and the slider (16) is slidably connected inside the groove (15). The protective cover (1) and the splicing cover (11) both have heat dissipation holes (17) on their side walls. The protective cover (1) has a port (19) inside, and the side wall of the port (19) is fixedly connected to the side wall of the base plate (3).

7. A terminal cover for a circuit breaker according to claim 4, characterized in that: The splicing cover (11) is provided with a second spring (13). One end of the second spring (13) is fixedly connected to the inside of the cavity (12), and the other end of the second spring (13) is fixedly connected to the side wall of the limiting block (14). A switch (18) is fixedly connected to the side wall of the circuit breaker body (2). Ports (19) are provided on both sides of the circuit breaker body (2).

Images