Circuit breaker with connection protection structure
By designing protection mechanisms and compression mechanisms in circuit breakers, the problem of lack of protection at the connections of existing circuit breakers is solved, and effective occlusion and fixation of the connections between cables and circuit breakers is achieved to prevent dust from entering and arcing, ensuring the equipment stable use.
Patent Information
- Application Number
- CN202421084977.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-17
AI Technical Summary
Existing circuit breakers lack protection for the connection between cables and circuit breakers, resulting in dust falling into, arcing formation and connection loosening, causing equipment damage.
A circuit breaker with a connecting protection structure is designed, including a protection mechanism and a compression mechanism. Through components such as threaded rods, knobs, protective covers and return springs, the shading protection and cable fixation of the cable connection between the cable and the circuit breaker are achieved. .
Effectively prevent dust from entering, avoid arc formation, ensure the normal operation of the circuit breaker, and prevent loosening problems caused by cable pulling.
Smart Images
Figure CN222190610U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker with a connection protection structure. Background Art
[0002] A circuit breaker is a switching device that can close, carry and interrupt current under normal circuit conditions and can close, carry and interrupt current under abnormal circuit conditions within a specified time.
[0003] Existing circuit breakers do not have the function of protecting the connection between the cable and the circuit breaker. When the connection between the cable and the circuit breaker is exposed to the outside for a long time, dust may fall on the connection, causing an arc to be generated inside the connection, causing damage to the circuit breaker. In view of this, a circuit breaker with a connection protection structure is proposed. Utility Model Content
[0004] The purpose of the utility model is to provide a circuit breaker with a connection protection structure to solve the problems raised in the above background technology.
[0005] To achieve the above object, the utility model provides the following technical solution: a circuit breaker with a connection protection structure, comprising a mounting plate and a circuit breaker body, the circuit breaker body is fixed to the mounting plate, a cable is fixed to the bottom of the circuit breaker body, a protection mechanism for shielding the connection between the cable and the circuit breaker body is provided on the mounting plate, a pressing mechanism is provided on the protection mechanism, and the protection mechanism comprises:
[0006] A threaded rod, the threaded rod is rotatably mounted on the mounting plate, a knob is fixed to the top of the threaded rod, and a threaded sleeve is threadedly connected to the outer wall of the threaded rod;
[0007] A connecting rod is fixed at the bottom of the threaded sleeve, and a protective cover is fixed at the bottom of the connecting rod. The protective cover can be provided to shield and protect the connection between the cable and the circuit breaker body.
[0008] Preferably, the connecting rod passes through the middle part of the mounting plate, and is slidably connected at the penetration point.
[0009] Preferably, the clamping mechanism comprises a slide groove, the slide groove is opened on the inner wall of the protective cover, and a transmission plate is slidably mounted on the inner wall of the slide groove.
[0010] Preferably, a return spring is fixed to the bottom of the transmission plate, and the bottom of the return spring is fixed to the inner wall of the slide groove. The return spring can be provided to achieve the effect of resetting the transmission plate.
[0011] Preferably, a movable rod is hinged at the bottom of the transmission plate, a clamping plate is hinged at one end of the movable rod away from the transmission plate, and the clamping plate is slidably mounted on the inner wall of the protective cover.
[0012] Preferably, two groups of the clamping plates are arranged in the protective cover, and the two groups of clamping plates are symmetrically arranged with the center line of the cable in the vertical direction as the symmetry axis. The clamping plates can be arranged to compress and fix the cable.
[0013] Compared with the prior art, the utility model provides a circuit breaker with a connection protection structure, which has the following beneficial effects:
[0014] 1. In order to prevent damage to the connection between the cable and the circuit breaker body, the circuit breaker with a connection protection structure can shield and protect the connection between the cable and the circuit breaker body through a protective cover to prevent a large amount of dust from falling on the connection, which may easily cause an arc at the cable connection and damage the circuit breaker body.
[0015] 2. In order to prevent the cable from being pulled and causing the connection between the cable and the circuit breaker body to loosen, the circuit breaker with a connection protection structure is provided with a clamping mechanism, so that the clamping plate can clamp and fix the cable to prevent the cable from being pulled accidentally and causing the cable to loosen. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the overall part of the utility model;
[0018] Figure 3 This is a schematic diagram of the overall back structure of the utility model;
[0019] Figure 4 This is a schematic diagram of the internal structure of the protective cover of the utility model.
[0020] In the figure: 1. mounting plate; 2. circuit breaker body; 3. cable; 4. protection mechanism; 41. threaded rod; 42. knob; 43. threaded sleeve; 44. connecting rod; 45. protection cover; 5. clamping mechanism; 51. slide groove; 52. transmission plate; 53. reset spring; 54. clamping plate; 55. movable rod. DETAILED DESCRIPTION
[0021] like Figure 1-Figure 4As shown, the utility model provides a technical solution: a circuit breaker with a connection protection structure, comprising a mounting plate 1 and a circuit breaker body 2, the circuit breaker body 2 is fixed on the mounting plate 1, a cable 3 is fixed at the bottom of the circuit breaker body 2, a protection mechanism 4 for protecting the connection between the cable 3 and the circuit breaker body 2 is arranged on the mounting plate 1, and a clamping mechanism 5 is arranged on the protection mechanism 4.
[0022] Specifically, the protection mechanism 4 includes a threaded rod 41, a knob 42, a threaded sleeve 43, a connecting rod 44 and a protective cover 45. The threaded rod 41 is rotatably installed on the mounting plate 1. The top of the threaded rod 41 is fixed with a knob 42. The outer wall of the threaded rod 41 is threadedly connected with a threaded sleeve 43. The bottom of the threaded sleeve 43 is fixed with a connecting rod 44. The connecting rod 44 penetrates the mounting plate 1 and is slidably connected at the penetration point. When the knob 42 is turned forward, the threaded rod 41 can be driven to rotate forward, the threaded sleeve 43 can be moved upward, the threaded sleeve 43 drives the connecting rod 44 to move upward, and a protective cover 45 is fixed to the bottom of the connecting rod 44. When the connecting rod 44 moves upward, the protective cover 45 can be driven to move upward, so that the protective cover 45 can shield the connection between the cable 3 and the circuit breaker body 2, thereby achieving a protective effect, and preventing a large amount of dust from falling on the connection, which can easily cause an arc at the connection of the cable 3 and damage the circuit breaker body 2.
[0023] Specifically, the clamping mechanism 5 includes a slide groove 51, a transmission plate 52, a return spring 53, a clamping plate 54 and a movable rod 55; the slide groove 51 is opened on the inner side of the protective cover 45, and a transmission plate 52 is slidably installed on the inner wall of the slide groove 51, and a return spring 53 is fixed at the bottom of the transmission plate 52. The bottom of the return spring 53 is fixed to the inner wall of the slide groove 51. By setting the return spring 53, the transmission plate 52 can be reset. A clamping plate 54 is slidably installed on the inner side of the protective cover 45. Two groups of clamping plates 54 are arranged in the protective cover 45, and the two groups of clamping plates 54 are symmetrically arranged with the center line of the cable 3 in the vertical direction as the symmetry axis. The bottom of the transmission plate 52 is hinged with a movable rod 55, and the movable rod 55 is far One end of the transmission plate 52 is hinged to the top of the clamping plate 54, and then when the protective cover 45 blocks the connection between the cable 3 and the circuit breaker body 2, the transmission plate 52 will contact the bottom of the circuit breaker body 2, and the transmission plate 52 will be subjected to an extrusion force, so that the transmission plate 52 slides downward in the slide groove 51, and the reset spring 53 is compressed, so that the transmission plate 52 can squeeze the movable rod 55, so that the movable rod 55 squeezes the two sets of clamping plates 54 in the protective cover 45 close to each other, and the cable 3 can be clamped by the clamping plate 54, and the cable 3 can be limited to prevent the cable 3 from being accidentally pulled, resulting in the loosening of the connection between the cable 3 and the circuit breaker body 2, affecting the normal use of the circuit breaker body 2.
[0024] Working principle: After the cable 3 is connected to the circuit breaker body 2, when the knob 42 is turned forward, the threaded rod 41 can be driven to rotate forward, the threaded sleeve 43 can be moved upward, and the threaded sleeve 43 drives the connecting rod 44 to move upward. When the connecting rod 44 moves upward, the protective cover 45 can be driven to move upward, so that the protective cover 45 can cover the connection between the cable 3 and the circuit breaker body 2, thereby achieving a protective effect and preventing a large amount of dust from falling on the connection, which may easily cause an arc at the connection of the cable 3 and damage the circuit breaker body 2. When the knob 42 is turned backward, the threaded sleeve 43 moves downward, and the protective cover 45 moves downward through the connecting rod 44, so that the connection between the cable 3 and the circuit breaker body 2 is exposed, so that maintenance and other operations can be carried out.
[0025] When the protective cover 45 blocks the connection between the cable 3 and the circuit breaker body 2, the transmission plate 52 will contact the bottom of the circuit breaker body 2, and the transmission plate 52 will be subjected to the extrusion force, so that the transmission plate 52 slides downward in the slide groove 51, compressing the return spring 53, so that the transmission plate 52 can squeeze the movable rod 55, so that the movable rod 55 squeezes the two sets of clamping plates 54 in the protective cover 45 close to each other, and the cable 3 can be compressed by the clamping plate 54, and the cable 3 can be limited to prevent the cable 3 from being accidentally pulled, resulting in the loosening of the connection between the cable 3 and the circuit breaker body 2 and affecting the normal use of the circuit breaker body 2. When the protective cover 45 moves downward, the transmission plate 52 will not contact the circuit breaker body 2. Because the return spring 53 is in a compressed state, the transmission plate 52 will move upward, and the clamping plates 54 can be moved away from each other through the movable rod 55, so that the clamping fixation of the cable 3 can be released, and the disassembly and assembly of the cable 3 is convenient.
[0026] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A circuit breaker with a connection protection structure, comprising a mounting plate (1) and a circuit breaker body (2), wherein the circuit breaker body (2) is fixed on the mounting plate (1), characterized in that: A cable (3) is fixed to the bottom of the circuit breaker body (2); a protection mechanism (4) for shielding the connection between the cable (3) and the circuit breaker body (2) is provided on the mounting plate (1); a pressing mechanism (5) is provided on the protection mechanism (4); and the protection mechanism (4) comprises: A threaded rod (41), the threaded rod (41) being rotatably mounted on the mounting plate (1), a knob (42) being fixed to the top of the threaded rod (41), and a threaded sleeve (43) being threadedly connected to the outer wall of the threaded rod (41); A connecting rod (44) is fixed to the bottom of the threaded sleeve (43), and a protective cover (45) is fixed to the bottom of the connecting rod (44).
2. A circuit breaker with a connection protection structure according to claim 1, characterized in that: The connecting rod (44) passes through the middle part of the mounting plate (1) and is slidably connected at the penetration point.
3. A circuit breaker with a connection protection structure according to claim 1, characterized in that: The clamping mechanism (5) comprises a slide groove (51), the slide groove (51) is formed on the inner wall of the protective cover (45), and a transmission plate (52) is slidably mounted on the inner wall of the slide groove (51).
4. A circuit breaker with a connection protection structure according to claim 3, characterized in that: A return spring (53) is fixed to the bottom of the transmission plate (52), and the bottom of the return spring (53) is fixed to the inner wall of the slide groove (51).
5. A circuit breaker with a connection protection structure according to claim 3, characterized in that: A movable rod (55) is hinged at the bottom of the transmission plate (52), and a clamping plate (54) is hinged at one end of the movable rod (55) away from the transmission plate (52). The clamping plate (54) is slidably mounted on the inner wall of the protective cover (45).
6. A circuit breaker with a connection protection structure according to claim 5, characterized in that: Two groups of the clamping plates (54) are arranged in the protective cover (45), and the two groups of the clamping plates (54) are symmetrically arranged with the center line of the cable (3) in the vertical direction as the symmetry axis.