Residual current protection circuit breaker

Abstract

The utility model discloses a residual current protection circuit breaker, belonging to the circuit breaker field, the residual current protection circuit breaker comprises a circuit breaker body, a deflector rod and a connecting portion, the circuit breaker body is symmetrically provided with installing plates, the installing plates are fixedly provided with fixing rods, the fixing rods are sleeved with a sleeve 1, and the sleeve 1 is sleeved with a sleeve 2. A first folding plate is hinged to the first sleeve, a second folding plate is hinged to the first folding plate, a second sleeve is hinged to the second folding plate, and the end, away from the mounting plate, of the fixing rod is sleeved with a nut. According to the residual current protection circuit breaker, by arranging the mounting plate and the fixing rod, accurate positioning between the circuit breaker body and the air switch is ensured, normal linkage of the deflector rod is ensured, and reliability and safety during mounting can be improved; through the arrangement of the nut, the first sleeve and the second sleeve, installation can be conducted in a narrow space, operation is easy, the problem that parts fall off when bolts and the like are used for connection can be solved, and installation and maintenance time and cost are effectively saved.

Description

Technical Field

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

[0002] The residual current protection circuit breaker is one of the important electrical equipment in the low-voltage power distribution system. Its main function is to detect whether there is leakage by monitoring the current difference in the circuit, and quickly cut off the circuit when leakage is found to prevent phase-to-phase or ground short circuits, electric shock hazards, and improve power supply reliability.

[0003] Upon investigation, it was found that the Chinese utility model patent with publication number CN210897145U discloses a residual current protection circuit breaker, including a fixed outer shell, a handle mounting shell and a spring clamp, the upper surface of the handle mounting shell is provided with a handle fixing groove, a disconnect handle is movably installed on the inner side of the handle fixing groove, and a metal clicker is fixedly installed on the upper surface of the handle mounting shell at one side of the handle fixing groove.

[0004] The above-mentioned circuit breaker improves the space utilization during the assembly process, and can emit a striking sound to remind when the circuit is cut off. However, when the above-mentioned circuit breaker is combined and installed with the air switch, it cannot fully save the installation space. The circuit breaker and the air switch must be assembled before installation through the positioning rod and the positioning hole, or the air switch must be removed for installation. In the home use environment, this method is not conducive to circuit installation, maintenance and modification, and if the connection between the two is loose, the circuit breaker will not be able to link the air switch, causing safety hazards. When used at home, when the circuit trips, ordinary people still need to check for electrical faults and other methods to associate the circuit breaker with power failure, and if the power is off at night, it is not convenient to observe and repair. Ordinary users may find it difficult to distinguish between overload, short circuit and leakage tripping, which may lead to improper operation.

[0005] Therefore, the utility model provides a residual current protection circuit breaker to solve the above problems. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] The utility model provides a residual current protection circuit breaker, aiming to solve the problems of installation and connection of the existing circuit breaker proposed in the background technology.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a residual current protection circuit breaker, comprising a circuit breaker body, a lever slidably arranged on the circuit breaker body, and a connecting portion arranged on the back of the circuit breaker body, the circuit breaker body is symmetrically provided with mounting plates, the two mounting plates are vertically arranged in a collinear manner with the lever, a fixing rod is fixedly installed on the mounting plate, a sleeve 1 is sleeved on the fixing rod, one end of the sleeve 1 away from the mounting plate is hinged with four folding plates 1 distributed in a ring array, the other end of the folding plate 1 is hinged with a folding plate 2, and the other end of the folding plate 2 is hinged with a sleeve 2 sleeved on the fixing rod;

[0010] An external thread is provided at one end of the fixing rod away from the mounting plate, a nut is sleeved on the other end of the fixing rod away from the mounting plate, an internal thread engaged with the external thread is provided in the nut, a fixing plate corresponding to the mounting plate is provided on the air switch used in conjunction with the circuit breaker body, a through hole is provided on the fixing plate to allow the nut to pass through, and a reset button is provided on the circuit breaker body.

[0011] Preferably, a prompt mechanism is provided on the circuit breaker body.

[0012] Preferably, the prompt mechanism includes a mounting frame fixedly mounted on the circuit breaker body, a mounting groove provided on the mounting frame, and a power supply mechanism arranged in the mounting groove; the reset button is slidably mounted in the mounting frame; a light-emitting component is arranged in the reset button; pins penetrating the reset button are symmetrically arranged on both sides of the light-emitting component; one end of the pin away from the light-emitting component is aligned with the outer surface of the reset button; grooves are symmetrically provided on the mounting frame; a conductive plate corresponding to the position of the pin when the reset button pops out is fixedly installed in the groove; the conductive plate is connected to the power supply mechanism and in contact with the outer surface of the reset button; and the reset button is made of a transparent material.

[0013] Preferably, the power supply mechanism includes a power supply seat fixedly installed in the installation groove, a battery movably installed in the power supply seat, and a metal sheet rotatably installed on the power supply seat corresponding to the upper surface of the battery, and wires connected to the positive and negative poles of the battery are respectively arranged on both sides of the power supply seat, and the other end of the wire is connected to the conductive plate.

[0014] Preferably, an inspection cover is movably mounted on the installation frame.

[0015] Preferably, a card slot is fixedly installed on the circuit breaker body.

[0016] (III) Beneficial effects

[0017] The residual current protection circuit breaker has a simple structure and is easy to use. By arranging the mounting plate and the fixing rod, the accurate positioning between the circuit breaker body and the air switch is ensured, the normal linkage of the lever is ensured, and the reliability and safety during installation can be improved; by arranging the nut, the first sleeve and the second sleeve, it can be installed in a small space, the operation is simple, and the problem of parts falling off when connected by bolts etc. can be avoided, effectively saving the time and cost of installation and maintenance; by distributing the folding plate first and the folding plate second in an array, they can radiate outward along the hinge to achieve the limiting effect on the fixing plate and the mounting plate, and enhance the stability and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a residual current protection circuit breaker;

[0019] Figure 2 It is a left-side structural schematic diagram of a residual current protection circuit breaker;

[0020] Figure 3 It is a structural schematic diagram of a connection mechanism of a residual current protection circuit breaker;

[0021] Figure 4 It is a structural schematic diagram of a prompt mechanism of a residual current protection circuit breaker;

[0022] Figure 5 The present invention is a rear view structural diagram of a prompt mechanism of a residual current protection circuit breaker and an enlarged schematic diagram of its local structure.

[0023] In the figure: 1. circuit breaker body; 11. lever; 12. connecting part; 13. slot; 2. mounting plate; 21. fixing rod; 22. sleeve 1; 23. folding plate 1; 24. folding plate 2; 25. sleeve 2; 26. nut; 27. fixing plate; 28. through hole; 3. prompt mechanism; 31. mounting frame; 311. groove; 312. mounting slot; 313. inspection cover; 32. reset button; 33. luminous part; 331. pin; 34. conductive plate; 4. power supply mechanism; 41. power socket; 42. battery; 43. metal sheet; 44. wire. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides a residual current protection circuit breaker, such as Figure 1-5As shown, the circuit breaker includes a circuit breaker body 1, a lever 11 slidably arranged on the circuit breaker body 1, and a connecting portion 12 arranged on the back of the circuit breaker body 1, the circuit breaker body 1 is symmetrically provided with mounting plates 2, the two mounting plates 2 and the lever 11 are vertically arranged in a collinear manner, a fixing rod 21 is fixedly installed on the mounting plate 2, a sleeve 22 is sleeved on the fixing rod 21, and one end of the sleeve 22 away from the mounting plate 2 is hinged with four folding plates 23 distributed in a ring array, and the other end of the folding plate 23 is hinged with a folding plate 24 The other end of the folding plate 24 is hinged with a sleeve 25 sleeved on the fixing rod 21, and the fixing rod 21 is provided with an external thread at one end away from the mounting plate 2. A nut 26 is sleeved at one end of the fixing rod 21 away from the mounting plate 2, and an internal thread engaged with the external thread is provided in the nut 26. A fixing plate 27 corresponding to the mounting plate 2 is provided on the air switch used in conjunction with the circuit breaker body 1, and a through hole 28 is provided on the fixing plate 27 to allow the nut 26 to pass through. A reset button 32 is provided on the circuit breaker body 1.

[0026] When in use, the circuit breaker body 1 is clamped on the installation panel through the connecting part 12. When clamping, it is only necessary to keep a distance greater than the lever 11 from the air switch. After clamping, the circuit breaker body 1 is slid to fit with the air switch. The lever 11 can be accurately positioned by passing the colinear fixed rod 21 through the through hole 28 to ensure the linkage between the two. Then, by rotating the nut 26, the nut 26 is rotated inward along the fixed rod 21, and the second sleeve 25 is squeezed to slide inward. The inner diameters of the sleeve 1 22 and the second sleeve 25 are larger than the fixed rod 21. When sliding, one end of the sleeve 1 22 abuts the mounting plate 2, so the folding plate 1 23 and the second folding plate 24 are squeezed to rotate along the hinge, and the outward protrusions are radially limited to the fixed plate 27 and the mounting plate 2, thereby locating the lever 11 and ensuring the linkage effect of the lever 11. This connection method requires a small space and is easy to install, which can effectively solve the problems of circuit maintenance and replacement in a cramped space.

[0027] Furthermore, the circuit breaker body 1 is provided with a prompt mechanism 3, the prompt mechanism 3 includes a mounting frame 31 fixedly mounted on the circuit breaker body 1, a mounting groove 312 provided on the mounting frame 31, and a power supply mechanism 4 provided in the mounting groove 312, the reset button 32 is slidably mounted in the mounting frame 31, a light-emitting member 33 is provided in the reset button 32, pins 331 penetrating the reset button 32 are symmetrically provided on both sides of the light-emitting member 33, one end of the pin 331 away from the light-emitting member 33 is aligned with the outer surface of the reset button 32, a groove 311 is symmetrically provided on the mounting frame 31, a conductive plate 34 corresponding to the position of the pin 331 when the reset button 32 pops out is fixedly installed in the groove 311, and the conductive plate 34 It is connected to the power supply mechanism 4 and contacts the outer surface of the reset button 32, and the reset button 32 is made of transparent material; when the circuit breaker body 1 is in action, the reset button 32 will be driven to pop out. Before popping out, the pin 331 passing through the reset button 32 fails to connect with the power supply mechanism 4, and the light-emitting part 33 is powered off and does not emit light. After popping out, the reset button 32 slides outward in the installation frame 31, driving the pin 331 to slide forward and contact the conductive plate 34 fixedly installed on the installation frame 31. Since the two conductive plates 34 are respectively connected to the positive and negative poles of the power supply mechanism 4, the light-emitting part 33 is energized. Since the reset button 32 is made of transparent material, light can penetrate the reset button 32 to form a prompt and lighting effect to the outside. When the maintenance is completed and reset, the reset button 32 slides inward, the pin 331 is disconnected from the conductive plate 34, and the light goes out.

[0028] Specifically, the power supply mechanism 4 includes a power supply seat 41 fixedly installed in the installation groove 312, a battery 42 movably installed in the power supply seat 41, and a metal sheet 43 rotatably installed on the power supply seat 41 corresponding to the upper surface of the battery 42. Wires 44 connected to the positive and negative poles of the battery 42 are respectively arranged on both sides of the power supply seat 41, and the other end of the wire 44 is connected to the conductive plate 34. An inspection cover 313 is movably installed on the installation frame 31; the upper and lower ends of the power supply seat 41 are respectively connected to the battery 42, wherein the upper end is connected by a rotatably installed metal sheet 43 to facilitate replacement of the battery 42, and the circuit is connected to the conductive plate 34 by the wire 44 to form a circuit. The battery 42 in the installation groove 312 can be easily replaced by the inspection cover 313 arranged on the front of the circuit breaker body 1. The above circuit is only connected when the circuit breaker body 1 cuts off the working circuit, and can be disconnected in a normal state to save the battery 42 power and improve the service life of the mechanism.

[0029] Furthermore, a card slot 13 is fixedly installed on the circuit breaker body 1; by inserting nameplates with different contents into the card slot 13, the circuit corresponding to the circuit breaker body 1 is reminded to avoid confusion in a multi-circuit working environment and increase working difficulty.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A residual current protection circuit breaker, comprising a circuit breaker body (1), a lever (11) slidably arranged on the circuit breaker body (1), and a connecting portion (12) arranged on the back of the circuit breaker body (1), characterized in that: The circuit breaker body (1) is symmetrically provided with mounting plates (2), the two mounting plates (2) being arranged vertically in line with the shifting rod (11), the mounting plates (2) being fixedly provided with a fixing rod (21), the fixing rod (21) being sleeved with a sleeve (22), the sleeve (22) being hingedly connected at one end away from the mounting plate (2) with four folding plates (23) distributed in a ring array, the folding plate (23) being hingedly connected at the other end with a folding plate (24), the folding plate (24) being hingedly connected at the other end with a sleeve (25) sleeved on the fixing rod (21); An external thread is formed on one end of the fixing rod (21) away from the mounting plate (2); a nut (26) is sleeved on the end of the fixing rod (21) away from the mounting plate (2); an internal thread is formed in the nut (26) and meshes with the external thread; a fixing plate (27) corresponding to the mounting plate (2) is provided on an air switch used in conjunction with the circuit breaker body (1); a through hole (28) is formed on the fixing plate (27) for allowing the nut (26) to pass through; and a reset button (32) is provided on the circuit breaker body (1).

2. The residual current protection circuit breaker according to claim 1, characterized in that: The circuit breaker body (1) is provided with a prompting mechanism (3).

3. The residual current protection circuit breaker according to claim 2, characterized in that: The prompt mechanism (3) comprises a mounting frame (31) fixedly mounted on the circuit breaker body (1), a mounting groove (312) provided on the mounting frame (31), and a power supply mechanism (4) arranged in the mounting groove (312); the reset button (32) is slidably mounted in the mounting frame (31); a light-emitting component (33) is arranged in the reset button (32); pins (331) penetrating the reset button (32) are symmetrically arranged on both sides of the light-emitting component (33); one end of the pin (331) away from the light-emitting component (33) is aligned with the outer surface of the reset button (32); a groove (311) is symmetrically provided on the mounting frame (31); a conductive plate (34) corresponding to the position of the pin (331) when the reset button (32) pops out is fixedly installed in the groove (311); the conductive plate (34) is connected to the power supply mechanism (4) and contacts the outer surface of the reset button (32); the reset button (32) is made of a transparent material.

4. The residual current protection circuit breaker according to claim 3, characterized in that: The power supply mechanism (4) comprises a power supply seat (41) fixedly mounted in the mounting groove (312), a battery (42) movably mounted in the power supply seat (41), and a metal sheet (43) rotatably mounted on the power supply seat (41) and corresponding to the upper surface of the battery (42), and wires (44) connected to the positive and negative electrodes of the battery (42) are respectively arranged on both sides of the power supply seat (41), and the other end of the wire (44) is connected to the conductive plate (34).

5. The residual current protection circuit breaker according to claim 3, characterized in that: An inspection cover plate (313) is movably mounted on the installation frame (31).

6. The residual current protection circuit breaker according to claim 1, characterized in that: A card slot (13) is fixedly mounted on the circuit breaker body (1).

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