Miniature residual-current circuit breaker with good reliability

Abstract

The utility model discloses a miniature residual-current circuit breaker with good reliability, and relates to the technical field of circuit breakers. The circuit breaker comprises a mounting frame, a circuit breaker body is arranged on the inner side of the mounting frame, locking mechanisms used for limiting the circuit breaker body are arranged on the left side and the right side of the mounting frame respectively, a wire positioning mechanism is further arranged on the surface of the mounting frame, and mounting lugs are fixedly connected to the top face and the bottom face of the mounting frame respectively. The locking mechanism comprises a blocking piece, the blocking piece is fixedly connected with the inner wall of the mounting frame, a positioning seat is fixedly connected to the inner wall of the mounting frame, a sliding groove is formed in the side face of the mounting frame in a penetrating mode, and a connecting rod is slidably connected to the inner wall of the sliding groove. Repeated comparison and confirmation are not needed during rewiring, so that the wiring process is more convenient, and the replacement efficiency of the circuit breaker is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to a miniature residual current circuit breaker with high reliability. Background Technology

[0002] As low-voltage power distribution systems develop towards miniaturization and modularization, miniature circuit breakers, as core components of circuit protection, have become an important direction for technological improvement in terms of reliability and ease of maintenance.

[0003] When replacing a traditional circuit breaker, the operator needs to disconnect all wire connections at all terminals before rewiring after replacing the new circuit breaker. This process is particularly cumbersome for multi-pole circuit breakers (such as 4P circuit breakers): typically, eight wires (four incoming and four outgoing) need to be handled simultaneously. In the confined space of a distribution box, these wires are prone to tangling and misalignment after disassembly, requiring repeated comparisons and confirmations of phase relationships during rewiring. Therefore, the entire wiring process is quite complicated.

[0004] Therefore, a reliable miniature residual current circuit breaker is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a reliable miniature residual current circuit breaker in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A reliable miniature residual current circuit breaker includes a mounting frame, a circuit breaker body is disposed inside the mounting frame, locking mechanisms for limiting the position of the circuit breaker body are disposed on both the left and right sides of the mounting frame, a wire positioning mechanism is disposed on the surface of the mounting frame, and mounting ears are fixedly connected to the top and bottom surfaces of the mounting frame.

[0008] Furthermore, the locking mechanism includes a baffle plate, which is fixedly connected to the inner wall of the mounting frame. A positioning seat is fixedly connected to the inner wall of the mounting frame. A sliding groove is provided through the side of the mounting frame. A connecting rod is slidably connected to the inner wall of the sliding groove. One end of the connecting rod is fixedly connected to a pin, which is movably inserted into the inner wall of the positioning seat. A fixing plate is fixedly connected to the side of the mounting frame. A spring is fixedly connected between the other end of the connecting rod and the fixing plate.

[0009] Furthermore, the wire positioning mechanism includes a mounting rod, the mounting rod has a slot on its front side, a first threaded rod is rotatably connected to the center of the front side of the mounting rod, a first knob is fixedly connected to the front end of the first threaded rod, and a C-shaped rod is threadedly connected to the surface of the first threaded rod, with both ends of the C-shaped rod being movably inserted into the surface of the mounting rod.

[0010] Furthermore, an anti-slip pad is fixedly connected to the inner wall of the slot, and the anti-slip pad is made of rubber.

[0011] Furthermore, the number of conductor positioning mechanisms is two sets, and the two sets of conductor positioning mechanisms are located above the circuit breaker body and below the circuit breaker body, respectively.

[0012] Furthermore, the surface of the mounting frame is threaded with a second threaded rod, one end of which is rotatably connected to the mounting rod, and the other end of which is fixedly connected to a second knob. Both ends of the mounting rod are fixedly connected to locking blocks, and the locking blocks are slidably connected to the surface of the mounting frame.

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

[0014] The mounting frame can be fixed by using mounting ears and bolts. The circuit breaker body can be fixed to the inner wall of the mounting frame by the locking mechanism. The wires are connected to the circuit breaker body. Multiple wires can be separated and fixed by the wire positioning mechanism. When the circuit breaker body needs to be disassembled and replaced, the wire positioning mechanism can keep the wires stable. By releasing the limit on the circuit breaker body by the locking mechanism, the circuit breaker body can be quickly disassembled. In use, it can effectively limit the wires connected to the circuit breaker. When rewiring, there is no need to repeatedly compare and confirm, making the wiring process more convenient and effectively improving the replacement efficiency of the circuit breaker. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the locking mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the wire positioning mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the mounting frame structure of this utility model;

[0019] Reference numerals in the attached drawings: 1. Mounting frame; 2. Circuit breaker body; 3. Locking mechanism; 301. Baffle; 302. Positioning seat; 303. Slide groove; 304. Connecting rod; 305. Insert post; 306. Fixing plate; 307. Spring; 4. Wire positioning mechanism; 401. Mounting rod; 402. Slot; 403. Anti-slip pad; 404. C-shaped rod; 405. First threaded rod; 406. First knob; 5. Locking block; 6. Second threaded rod; 7. Second knob; 8. Mounting ear. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0024] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They 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. Therefore, they should not be construed as limitations on this utility model.

[0025] like Figures 1 to 4As shown, a reliable miniature residual current circuit breaker includes a mounting frame 1, with a circuit breaker body 2 disposed inside the mounting frame 1. Locking mechanisms 3 for limiting the circuit breaker body 2 are provided on both the left and right sides of the mounting frame 1. A wire positioning mechanism 4 is also provided on the surface of the mounting frame 1. Mounting ears 8 are fixedly connected to the top and bottom surfaces of the mounting frame 1. More specifically, the mounting frame 1 can be fixed by the mounting ears 8 and bolts. The circuit breaker body 2 can be fixed to the inner wall of the mounting frame 1 by the locking mechanisms 3. Wires are connected to the circuit breaker body 2. Multiple wires can be separated and fixed using the wire positioning mechanism 4. When it is necessary to disassemble and replace the circuit breaker body 2, the wire positioning mechanism 4 keeps the wires stable. By releasing the limiting of the circuit breaker body 2 by the locking mechanism 3, the circuit breaker body 2 can be quickly disassembled.

[0026] The locking mechanism 3 includes a baffle 301, which is fixedly connected to the inner wall of the mounting frame 1. A positioning seat 302 is fixedly connected to the inner wall of the mounting frame 1. A sliding groove 303 is provided through the side of the mounting frame 1. A connecting rod 304 is slidably connected to the inner wall of the sliding groove 303. One end of the connecting rod 304 is fixedly connected to a pin 305, and the pin 305 is movably inserted into the inner wall of the positioning seat 302. A fixing plate 306 is fixedly connected to the side of the mounting frame 1. A spring 307 is fixedly connected between the other end of the connecting rod 304 and the fixing plate 306. It should be noted that by pressing the connecting rod 304, overcoming the elastic force of the spring 307, the connecting rod 304 will slide along the inner wall of the slide groove 303. The connecting rod 304 will drive the plug 305 to disengage from the inner wall of the positioning seat 302, thereby releasing the limitation on the circuit breaker body 2, so that the circuit breaker body 2 can be quickly disassembled. During the installation process, the baffle 301 can guide and limit the positioning seat 302, making it easy to determine the position of the circuit breaker body 2.

[0027] The wire positioning mechanism 4 includes a mounting rod 401. A slot 402 is formed on the front of the mounting rod 401. A first threaded rod 405 is rotatably connected to the center of the front of the mounting rod 401. A first knob 406 is fixedly connected to the front end of the first threaded rod 405. A C-shaped rod 404 is threadedly connected to the surface of the first threaded rod 405, and both ends of the C-shaped rod 404 are movably inserted into the surface of the mounting rod 401. More specifically, during installation, the wire is pre-inserted into the slot 402. Then, by rotating the first knob 406, the first threaded rod 405 rotates, and under the action of the thread, the C-shaped rod 404 moves, causing it to press against the surface of the wire, thus limiting the wire's position.

[0028] An anti-slip pad 403, made of rubber, is fixedly connected to the inner wall of the slot 402. It should be noted that by setting the rubber anti-slip pad 403, the friction between the pad and the wire surface can be increased, making the wire more stable inside the slot 402, and the rubber material is less likely to cause pressure damage to the wire surface.

[0029] There are two sets of conductor positioning mechanisms 4, with the two sets located above and below the circuit breaker body 2, respectively. More specifically, by setting two sets of conductor positioning mechanisms 4, it is convenient to limit the incoming and outgoing lines respectively.

[0030] A second threaded rod 6 is threadedly connected to the surface of the mounting frame 1, with one end of the second threaded rod 6 rotatably connected to the mounting rod 401 and the other end of the second threaded rod 6 fixedly connected to a second knob 7. Both ends of the mounting rod 401 are fixedly connected to locking blocks 5, which are slidably connected to the surface of the mounting frame 1. It should be noted that rotating the second knob 7 causes the second threaded rod 6 to rotate. Under the action of the thread, the second threaded rod 6 will move, thereby pushing the mounting rod 401 to move, allowing the conductor end to approach or move away from the circuit breaker body 2. This makes installing and removing the conductor more convenient. When the mounting rod 401 moves, it causes the locking blocks 5 to slide along the surface of the mounting frame 1, ensuring stable movement of the mounting rod 401.

[0031] In summary: The mounting frame 1 can be fixed by using the mounting lugs 8 and bolts. The circuit breaker body 2 can be fixed to the inner wall of the mounting frame 1 by the locking mechanism 3. The wires are connected to the circuit breaker body 2. Multiple wires can be separated and fixed by the wire positioning mechanism 4. When the circuit breaker body 2 needs to be disassembled and replaced, the wire positioning mechanism 4 can keep the wires stable. By releasing the limit on the circuit breaker body 2 by the locking mechanism 3, the circuit breaker body 2 can be quickly disassembled. In use, it achieves the effect of effectively limiting the wires connected to the circuit breaker. When rewiring, there is no need to repeatedly compare and confirm, making the wiring process more convenient and effectively improving the replacement efficiency of the circuit breaker.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A reliable miniature residual current circuit breaker, characterized in that, The device includes a mounting frame (1), a circuit breaker body (2) is provided on the inner side of the mounting frame (1), a locking mechanism (3) for limiting the circuit breaker body (2) is provided on both the left and right sides of the mounting frame (1), a wire positioning mechanism (4) is also provided on the surface of the mounting frame (1), and mounting ears (8) are fixedly connected to the top and bottom surfaces of the mounting frame (1).

2. The reliable miniature residual current circuit breaker according to claim 1, characterized in that, The locking mechanism (3) includes a baffle (301), which is fixedly connected to the inner wall of the mounting frame (1). The inner wall of the mounting frame (1) is fixedly connected to a positioning seat (302). A sliding groove (303) is provided through the side of the mounting frame (1). A connecting rod (304) is slidably connected to the inner wall of the sliding groove (303). One end of the connecting rod (304) is fixedly connected to a pin (305), and the pin (305) is movably inserted into the inner wall of the positioning seat (302). A fixing plate (306) is fixedly connected to the side of the mounting frame (1). A spring (307) is fixedly connected between the other end of the connecting rod (304) and the fixing plate (306).

3. The reliable miniature residual current circuit breaker according to claim 1, characterized in that, The wire positioning mechanism (4) includes a mounting rod (401), a slot (402) is provided on the front side of the mounting rod (401), a first threaded rod (405) is rotatably connected to the center of the front side of the mounting rod (401), a first knob (406) is fixedly connected to the front end of the first threaded rod (405), and a C-shaped rod (404) is threadedly connected to the surface of the first threaded rod (405), and both ends of the C-shaped rod (404) are movably inserted into the surface of the mounting rod (401).

4. A reliable miniature residual current circuit breaker according to claim 3, characterized in that, The inner wall of the slot (402) is fixedly connected with an anti-slip pad (403), and the anti-slip pad (403) is made of rubber.

5. A reliable miniature residual current circuit breaker according to claim 1, characterized in that, The number of conductor positioning mechanisms (4) is two sets, and the two sets of conductor positioning mechanisms (4) are located above the circuit breaker body (2) and below the circuit breaker body (2), respectively.

6. A miniature residual current circuit breaker with high reliability according to claim 3, characterized in that, The surface of the mounting frame (1) is threaded with a second threaded rod (6), and one end of the second threaded rod (6) is rotatably connected to the mounting rod (401). The other end of the second threaded rod (6) is fixedly connected with a second knob (7). Both the left and right ends of the mounting rod (401) are fixedly connected with locking blocks (5), and the locking blocks (5) are slidably connected to the surface of the mounting frame (1).

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