A circuit breaker with electric leakage early warning function

Abstract

This utility model relates to the field of circuit breaker technology, and provides a circuit breaker with leakage current warning function. It includes a circuit breaker body, a leakage current warning device installed on the outer wall of the circuit breaker body, a buzzer installed on the outer wall of the circuit breaker body, and an assembly mechanism fixedly connected to one side of the circuit breaker body. The assembly mechanism includes a docking block fixedly installed on one side of the circuit breaker body. The docking block has an internal clearance groove, and the inner side wall of the clearance groove has a guide groove. A locking block is movably connected inside the clearance groove, and a guide block is fixedly connected to the outer wall of the locking block. A first return spring is fixedly connected to one side of the locking block. This utility model allows the circuit breaker body to be moved so that the docking block can be inserted into the docking groove inside the positioning plate, facilitating stable installation of the circuit breaker body and also facilitating disassembly and maintenance of the circuit breaker body.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a circuit breaker with leakage current warning function. Background Technology

[0002] In power systems, circuit breakers are important protective electrical appliances used to automatically disconnect circuits when faults such as overloads and short circuits occur, thereby protecting electrical equipment and personnel. Traditional circuit breakers mainly focus on overload and short-circuit protection functions, but with the increasing demands for electrical safety, leakage current issues have received growing attention. To prevent leakage current accidents, circuit breakers with leakage current warning functions are needed.

[0003] To address this issue, patent CN214588655U discloses an intelligent circuit breaker with leakage protection function, comprising a circuit breaker body, a control switch, and a connection slot. The control switch is fixedly installed on the left side of the circuit breaker body, and the connection slot is also located on the left side. A current sensor is located on the right side of the circuit breaker body for voltage detection of current. A circuit breaker controller is internally located within the circuit breaker body. This invention, by incorporating an insulating inner layer and an insulating outer layer, solves the problem that existing intelligent circuit breakers can only disconnect and switch power supplies, failing to guarantee against leakage during operation. Through this structural combination, the intelligent circuit breaker not only performs power disconnection and switching but also ensures that the entire device does not leak current during use, preventing damage to the equipment.

[0004] The existing technical solutions mentioned above have the following drawbacks: when in use, it is inconvenient to install the circuit breaker, which requires bolts to install the circuit breaker body on the wall, making the operation more complicated, and it is even more inconvenient when it needs to be disassembled and repaired. Utility Model Content

[0005] The purpose of this utility model is to provide a circuit breaker with leakage current warning function to solve the defect of existing circuit breakers being inconvenient to install.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a circuit breaker with leakage current warning function, including a circuit breaker body;

[0007] A leakage current warning device is installed on the outer wall of the circuit breaker body, a buzzer is installed on the outer wall of the circuit breaker body, and an assembly mechanism is fixedly connected to one side of the circuit breaker body.

[0008] The assembly mechanism includes a docking block fixedly installed on one side of the circuit breaker body. The docking block has an internal clearance groove, and the inner side wall of the clearance groove has a guide groove. A locking block is movably connected inside the clearance groove, and a guide block is fixedly connected to the outer wall of the locking block. A first reset spring is fixedly connected to one side of the locking block.

[0009] Preferably, a positioning plate is installed on the outer wall of the docking block, and a docking groove is formed inside the positioning plate, with a slot formed on the inner side wall of the docking groove.

[0010] Preferably, the docking block and the locking block form a sliding structure through the avoidance groove, and the guide block and the docking block form a sliding structure through the guide groove, so that the locking block can slide along the avoidance groove and be retracted into the docking block.

[0011] Preferably, the card block is engaged with the positioning plate through a card slot, and the docking block is engaged with the positioning plate through a docking groove, so that the spherical end of the card block can be engaged into the card slot for limiting.

[0012] Preferably, a limiting mechanism is fixedly connected to the top of the positioning plate. The limiting mechanism includes a side plate fixedly installed on the top of the positioning plate, a limiting block fixedly connected to the inner wall of the side plate, a baffle movably connected to the inner wall of the side plate, a sliding groove opened inside the baffle, and a second return spring fixedly connected to the outer wall of the baffle.

[0013] Preferably, the side plate is U-shaped, and the limiting block is symmetrically arranged with respect to the central axis of the side plate, which facilitates the guidance of the baffle.

[0014] Preferably, the side plate and the baffle form a sliding structure, and the limiting block forms a sliding structure with the baffle through the sliding groove, which can make the baffle block the top of the docking block.

[0015] The circuit breaker with leakage current warning function provided by this utility model has the following advantages:

[0016] By using the circuit breaker body and assembly mechanism, the circuit breaker body can be moved to allow the docking block to be inserted into the docking slot inside the positioning plate, which facilitates the stable installation of the circuit breaker body and also makes it easy to disassemble and repair the circuit breaker body.

[0017] Furthermore, the interlocking action of the card block and the card slot can limit the positioning of the docking block, further improving the stability of the circuit breaker body limiting assembly.

[0018] Furthermore, the sliding of the guide block and the guide groove can improve the stability of the sliding of the block, and make the block automatically retract after being squeezed by the outside, thus improving the convenience of installing the circuit breaker body.

[0019] With the assembly and limiting mechanisms in place, the baffle is pulled and slid along the side plate. After the mating block is inserted into the mating groove for installation, the baffle is released. Under the action of the second reset spring, the baffle can be reset and the top of the mating block can be blocked and limited, further improving the stability of the mating block limit.

[0020] Furthermore, since the limiting block is located inside the slide groove, the stability of the baffle sliding can be improved. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram showing the disassembled structure of the docking block of this utility model;

[0023] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0024] Figure 4 This is a perspective view of the positioning plate of this utility model;

[0025] Figure 5 This is a schematic diagram showing the disassembled limiting mechanism of this utility model.

[0026] The following are the annotations in the figure: 1. Circuit breaker body; 2. Leakage warning device; 3. Buzzer; 4. Assembly mechanism; 41. Connecting block; 42. Clearance groove; 43. Guide groove; 44. Locking block; 45. Guide block; 46. First return spring; 47. Positioning plate; 48. Connecting groove; 49. Locking groove; 5. Limiting mechanism; 51. Side plate; 52. Limiting block; 53. Baffle; 54. Slide groove; 55. Second return spring. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-5 The present invention provides a circuit breaker with leakage current warning function, including a circuit breaker body 1.

[0029] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a leakage current warning device 2 is installed on the outer wall of the circuit breaker body 1, and a buzzer 3 is installed on the outer wall of the circuit breaker body 1. An assembly mechanism 4 is fixedly connected to one side of the circuit breaker body 1. The assembly mechanism 4 includes a docking block 41 fixedly installed on one side of the circuit breaker body 1. An avoidance groove 42 is opened inside the docking block 41, and a guide groove 43 is opened on the inner side wall of the avoidance groove 42. A locking block 44 is movably connected inside the avoidance groove 42, and a guide block 45 is fixedly connected to the outer wall of the locking block 44. A first reset spring 46 is fixedly connected to one side of the mating block 41. A positioning plate 47 is installed on the outer wall of the mating block 41. A mating groove 48 is opened inside the positioning plate 47. A slot 49 is opened on the inner side wall of the mating groove 48. The mating block 41 and the slot 44 form a sliding structure through the avoidance groove 42. The guide block 45 and the mating block 41 form a sliding structure through the guide groove 43. The slot 44 is engaged with the positioning plate 47 through the slot 49. The mating block 41 is engaged with the positioning plate 47 through the mating groove 48.

[0030] By moving the circuit breaker body 1, the docking block 41 is inserted into the docking groove 48 inside the positioning plate 47, and the inner wall of the docking groove 48 presses against the locking block 44, causing it to slide along the relief groove 42 and the guide block 45 to slide along the guide groove 43. At this time, the first reset spring 46 is in a compressed state. When the docking block 41 is fully inserted into the docking groove 48, the locking block 44 can be reset and its spherical end can be locked into the locking groove 49 for limit, so that the circuit breaker body 1 is installed. When the circuit breaker body 1 leaks current, it will cause an imbalance in the current of the live wire and the neutral wire. The iron core of the zero-sequence current transformer will generate residual magnetic flux, which will induce a current signal in the secondary winding. This signal reflects the magnitude and direction of the leakage current. The leakage current warning device 2 analyzes the leakage current signal. When the circuit determines that the signal exceeds the warning threshold, the leakage current warning device 2 will control the buzzer 3 to sound an alarm.

[0031] Reference Figure 1 , Figure 4 and Figure 5 As shown, a limiting mechanism 5 is fixedly connected to the top of the positioning plate 47. The limiting mechanism 5 includes a side plate 51 fixedly installed on the top of the positioning plate 47. A limiting block 52 is fixedly connected to the inner wall of the side plate 51. A baffle 53 is movably connected to the inner wall of the side plate 51. A sliding groove 54 is provided inside the baffle 53. A second return spring 55 is fixedly connected to the outer wall of the baffle 53. The side plate 51 is U-shaped. The limiting block 52 is symmetrically arranged about the central axis of the side plate 51. The side plate 51 and the baffle 53 form a sliding structure. The limiting block 52 forms a sliding structure with the baffle 53 through the sliding groove 54.

[0032] By pulling the baffle 53, the limiting block 52 can move within the slide groove 54, allowing the baffle 53 to slide along the side plate 51. After the docking block 41 is inserted into the docking groove 48 for installation, the baffle 53 is released. Under the action of the second reset spring 55, the baffle 53 can be reset and block and limit the top of the docking block 41.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A circuit breaker with leakage current warning function, comprising a circuit breaker body (1); Its features are: A leakage warning device (2) is installed on the outer wall of the circuit breaker body (1), a buzzer (3) is installed on the outer wall of the circuit breaker body (1), and an assembly mechanism (4) is fixedly connected to one side of the circuit breaker body (1). The assembly mechanism (4) includes a docking block (41) fixedly installed on one side of the circuit breaker body (1). The docking block (41) has an opening in the interior of an avoidance groove (42). The inner side wall of the avoidance groove (42) has an opening in a guide groove (43). A locking block (44) is movably connected inside the avoidance groove (42). A guide block (45) is fixedly connected to the outer wall of the locking block (44). A first reset spring (46) is fixedly connected to one side of the locking block (44).

2. The circuit breaker with electric leakage early warning function according to claim 1, characterized in that: The outer wall of the docking block (41) is equipped with a positioning plate (47), the inside of the positioning plate (47) is provided with a docking groove (48), and the inner side wall of the docking groove (48) is provided with a slot (49).

3. The circuit breaker with electric leakage early warning function according to claim 1, characterized in that: The docking block (41) forms a sliding structure with the locking block (44) through the avoidance groove (42), and the guide block (45) forms a sliding structure with the docking block (41) through the guide groove (43).

4. The circuit breaker with electric leakage early warning function according to claim 2, characterized in that: The card block (44) is engaged with the positioning plate (47) through the card slot (49), and the docking block (41) is engaged with the positioning plate (47) through the docking groove (48).

5. A circuit breaker with leakage current warning function according to claim 1, characterized in that: The top of the positioning plate (47) is fixedly connected to a limiting mechanism (5). The limiting mechanism (5) includes a side plate (51) fixedly installed on the top of the positioning plate (47). The inner wall of the side plate (51) is fixedly connected to a limiting block (52). The inner wall of the side plate (51) is movably connected to a baffle (53). The baffle (53) has a sliding groove (54) inside. The outer wall of the baffle (53) is fixedly connected to a second return spring (55).

6. A circuit breaker with leakage current warning function according to claim 5, characterized in that: The side plate (51) is U-shaped, and the limiting block (52) is symmetrically arranged about the central axis of the side plate (51).

7. A circuit breaker with leakage current warning function according to claim 5, characterized in that: The side plate (51) and the baffle (53) form a sliding structure, and the limiting block (52) forms a sliding structure with the baffle (53) through the sliding groove (54).

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