Safety circuit breaker
By designing a safety circuit breaker, the socketed terminal and the release spring and ejection device on the rear side are used to automatically cut off and disengage the circuit breaker during fire, solving the problem that traditional circuit breakers cannot automatically cut off power during fire.
Patent Information
- Application Number
- CN202420308866.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-20
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-02-20
AI Technical Summary
Traditional circuit breakers cannot automatically cut off power and disengage when a fire occurs, causing the fire to spread and damage the surrounding circuit breakers.
A safety circuit breaker is designed, and its wiring posts are socketed, and a release spring and ejection device are provided on the rear side of the circuit breaker. In the event of a fire, the circuit breaker is pushed forward by the elastic force of the release spring and separated from the installation block to achieve automatic power outage and disengagement.
It effectively solves the problem that traditional circuit breakers cannot automatically cut off power and disengage during fire, avoiding the fire spreading and damaging the surrounding circuit breakers.
Smart Images
Figure CN222562588U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit breakers, in particular to a safety circuit breaker. Background Art
[0002] Circuit breakers are important circuit devices. When overloaded, the internal bimetallic plate heats up and bends to trigger the tripping device to achieve overload power outage. When short-circuited, the current change cooperates with the electromagnetic device to trigger the tripping device to complete short-circuit power-off protection. It is very practical.
[0003] However, as the bimetal plate ages, it bends due to heat when overloaded and cannot trigger the tripping device. Heat accumulates inside the circuit breaker and eventually causes a fire. The terminal posts and wires of the circuit breaker are fixedly connected and cannot be released after a fire. Circuit breakers are usually installed in parallel. When a circuit catches fire, the surrounding circuit breakers will be burned together. Therefore, it is very necessary to develop a circuit breaker that can automatically cut off power and disengage when a circuit breaker catches fire. Utility Model Content
[0004] In view of the shortcomings of the existing circuit breakers mentioned in the background technology during use, the utility model provides a safety circuit breaker, in which the terminal posts of the circuit breaker are arranged in a socketed manner, and a release spring is arranged on the rear side of the circuit breaker. When a fire occurs, the circuit breaker is ejected by a pop-up device to cut off the power supply, thereby solving the problem that the circuit breakers next to the traditional circuit breaker are burned when a fire occurs.
[0005] The utility model provides the following technical scheme: a safety circuit breaker comprises a circuit breaker, wherein a bimetallic sheet and a trigger device are arranged inside the circuit breaker, a locking tongue is arranged inside the circuit breaker, and protective covers are arranged on the upper and lower surfaces of the circuit breaker, the circuit breaker is movably connected with the protective cover, the protective cover is used to fix and install the wire, a mounting block is arranged on the rear side of the circuit breaker and the protective cover, the rear wall of the protective cover is fixedly connected with the front wall of the mounting block, the circuit breaker and the mounting block are fixedly connected by the locking tongue, a release spring is arranged between the circuit breaker and the mounting block, one end of the release spring is fixedly connected with the front wall of the mounting block, the locking tongue is retracted into the interior of the circuit breaker by the increase of the internal temperature of the circuit breaker, so that the circuit breaker and the mounting block are released, and the circuit breaker is pushed forward by the elastic force of the release spring to separate from the mounting block and cut off the power.
[0006] Preferably, the bottom surface of the protective cover is movably connected to the top surface of the circuit breaker, the top surface and the front side surface of the protective cover are provided with through holes, bumps are fixedly installed on both sides of the bottom surface of the protective cover, and a slide groove is provided on the top surface of the circuit breaker below the bumps.
[0007] Preferably, a collar is provided below the through hole on the top surface of the protective cover, the outer wall of the collar is fixedly connected to the inner wall of the protective cover, the collar is in the shape of a rectangular tube with the pipe mouth facing in the vertical direction, a threaded hole is provided on the front end side wall of the collar, a locking screw is movably sleeved in the threaded hole on the front wall of the collar, the end of the locking screw is rotatably connected to the front wall of the terminal board, the terminal board is an L-shaped right-angle plate and the horizontal plate is located on the front side of the vertical plate, a through hole is provided on the vertical plate of the terminal board along the axial direction of the locking screw, a limiting rod is sleeved in the through hole of the terminal board, both ends of the limiting rod are fixedly installed on the inner wall of the collar, the horizontal plate of the terminal board is movably sleeved with the top of the terminal slot, a rectangular hole adapted to the terminal board is provided on the top of the terminal slot, one end of the terminal slot is bent toward the top surface of the circuit breaker and is at a right angle to it, and the other end of the terminal slot is fixedly installed inside the circuit breaker.
[0008] Preferably, a folding bracket is provided between the rear wall of the circuit breaker and the front wall of the mounting block, the folding bracket is formed by hinged end to end of multiple sections of rods, and the two ends of the folding bracket are respectively fixedly connected to the front wall of the mounting block and the rear wall of the circuit breaker.
[0009] Preferably, lock holes are provided at the joints between the mounting block and the top and bottom surfaces of the circuit breaker, a lock tongue is movably sleeved on the outer wall of the circuit breaker opposite to the lock hole, one end of the lock tongue away from the lock hole is fixedly connected to one end of a compression spring, the other end of the compression spring is fixedly connected to the inner wall of the circuit breaker, the fuse column is fixedly mounted inside the circuit breaker, the lock tongue is movably sleeved on the fuse column, and a disassembly column is movably sleeved in the mounting block outside the lock hole.
[0010] The utility model has the following beneficial effects:
[0011] 1. The utility model solves the problem that the traditional circuit breaker cannot be separated from the wire when a fire occurs by setting the wiring device of the circuit breaker in a socket connection manner so that the installed circuit breaker can be separated from the wire when a fire occurs.
[0012] 2. The utility model provides a pop-up device on the rear side of the circuit breaker and a fuse column inside the circuit breaker. When a fire occurs, the circuit breaker is popped out by the pop-up device to cut off the power supply, thereby solving the problem that the circuit breaker next to it is burned when a fire occurs in a traditional circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the utility model;
[0014] Figure 2 This is a schematic diagram of the structure of the wiring board of the utility model;
[0015] Figure 3 For this utility model Figure 1 A cross-sectional view of
[0016] Figure 4 For this utility model Figure 3 A partial enlarged view of the middle part;
[0017] Figure 5 For this utility model Figure 3 A partial enlarged view of point B in the middle;
[0018] Figure 6 This is a schematic diagram of the structure of the utility model after popping up;
[0019] Figure 7 For this utility model Figure 6 A partial enlarged view.
[0020] In the figure: 1. Circuit breaker; 11. Slide; 2. Protective cover; 21. Ring; 22. Terminal block; 23. Locking screw; 24. Terminal slot; 25. Bump; 26. Limit rod; 3. Mounting block; 31. Release spring; 32. Folding bracket; 33. Lock hole; 34. Disassembly column; 4. Bimetallic strip; 5. Trigger device; 6. Wire; 7. Lock tongue; 71. Compression spring; 72. Fuse column. DETAILED DESCRIPTION
[0021] 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 of 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.
[0022] For ease of understanding, unless otherwise specified, the “front end” mentioned herein means the side close to the circuit breaker 1 , and the “rear end” means the side close to the mounting block 3 . The protective cover 2 mentioned herein is the protective cover 2 above the circuit breaker 1 .
[0023] See also Figure 1 Figure 6 and Figure 7 A safety circuit breaker comprises a circuit breaker 1, wherein the circuit breaker 1 is provided with electrical components such as a bimetallic strip 4 and a trigger device 5, a protective cover 2 is provided at the top and bottom of the circuit breaker 1, the bottom surface of the protective cover 2 is movably connected to the top surface of the circuit breaker 1, a through hole is provided on the top surface of the protective cover 2 for installing a wire 6, a through hole is provided on the front side of the protective cover 2 for accommodating the insertion of a screwdriver, protrusions 25 are fixedly installed on both sides of the bottom surface of the protective cover 2, a slide groove 11 is provided on the top surface of the circuit breaker 1 below the protrusion 25, and the circuit breaker 1 and the protective cover 2 are connected to each other by embedding the protrusion 25 into the slide groove 11, and a mounting block 3 is provided on the rear side of the circuit breaker 1 and the protective cover 2, the rear wall of the protective cover 2 is fixedly connected to the front wall of the mounting block 3, and the mounting block 3 is used to install the circuit breaker 1.
[0024] See also Figures 2 to 4 A collar 21 is fixedly installed on the inner wall of the protective cover 2. The collar 21 is in a rectangular tubular shape with the mouth of the pipe facing the vertical direction. A threaded hole is provided on the front side wall of the collar 21. A locking screw 23 is movably sleeved in the threaded hole on the front wall of the collar 21. The end of the locking screw 23 is rotatably connected to the front wall of the terminal block 22. The terminal block 22 is an L-shaped right-angle plate and the horizontal plate is located on the front side of the vertical plate. A through hole is provided on the vertical plate of the terminal block 22 along the axial direction of the locking screw 23. A limiting rod 26 is sleeved in the through hole. Both ends of the limiting rod 26 are fixedly installed on the inner wall of the collar 21. The limiting rod 26 is used to prevent the terminal block 22 from rotating, ensuring The terminal block 22 can only slide along the axial direction of the locking screw 23, and the horizontal plate of the terminal block 22 is movably connected with the top of the terminal slot 24. A rectangular hole adapted to the terminal block 22 is provided on the top of the terminal slot 24. One end of the terminal slot 24 is bent toward the top surface of the circuit breaker 1 and is perpendicular thereto. The other end of the terminal slot 24 is fixedly installed inside the circuit breaker 1 to supply power to the circuit breaker 1. By rotating the locking screw 23, the terminal block 22 is pushed toward the rear wall of the collar 21, and the wire 6 is clamped between the rear wall of the terminal block 22 and the collar 21. The current in the wire 6 is input into the circuit breaker 1 through the connection between the terminal slot 24 and the horizontal plate of the terminal block 22.
[0025] See also Figure 3 , Figure 5 and Figure 6 A release spring 31 and a folding bracket 32 are provided between the rear wall of the circuit breaker 1 and the front wall of the mounting block 3. One end of the release spring 31 is fixedly connected to the front wall of the mounting block 3. The folding bracket 32 is formed by hinged end to end of a multi-section rod. The two ends of the folding bracket 32 are respectively fixedly connected to the front wall of the mounting block 3 and the rear wall of the circuit breaker 1. The release of the release spring 31 pushes the circuit breaker 1 to move forward and separate from the protective cover 2. The folding bracket 32 is synchronously unfolded and suspends the circuit breaker 1 in mid-air to prevent the burning circuit breaker 1 from falling and igniting nearby combustibles.
[0026] See also Figure 3 and Figure 5A locking hole 33 is provided at the joint of the top and bottom surfaces of the mounting block 3 and the circuit breaker 1, and a locking tongue 7 is movably sleeved on the circuit breaker 1 opposite to the locking hole 33, and one end of the locking tongue 7 away from the locking hole 33 is fixedly connected to one end of the compression spring 71, and the other end of the compression spring 71 is fixedly connected to the inner wall of the circuit breaker 1, and the fuse column 72 is fixedly mounted inside the circuit breaker 1, and the locking tongue 7 is movably sleeved with the fuse column 72. When the temperature inside the circuit breaker 1 exceeds the melting point of the fuse column 72, the fuse column 72 melts and loses support for the locking tongue 7, and the locking tongue 7 is separated from the locking hole 33 under the action of the elastic force of the compression spring 71, and the circuit breaker 1 moves forward under the action of the elastic force of the release spring 31, and a disassembly column 34 is movably sleeved in the mounting block 3 at the top of the locking hole 33, and the active disassembly of the circuit breaker 1 is completed by pushing the disassembly column 34 to separate the locking tongue 7 from the locking hole 33.
[0027] The usage method (working principle) of the utility model is as follows:
[0028] Fix the circuit breaker 1, the protective cover 2 and the mounting block 3 on the mounting frame through the mounting block 3, insert the wire 6 into the ring 21 through the opening on the top of the protective cover 2, turn the locking screw 23 to push the terminal block 22 to move toward the rear inner wall of the ring 21 and clamp the wire 6, push the circuit breaker 1 to move toward the mounting block 3 until the lock tongue 7 is embedded in the lock hole 33 to complete the installation, and at the same time, the release spring 31 and the folding bracket 32 are compressed and folded.
[0029] When the circuit breaker 1 catches fire accidentally, or the bimetallic strip 4 in the circuit breaker 1 ages and cannot bend upwards and trigger the trigger device 5 to disconnect the circuit when an overload occurs, the heat inside the circuit breaker 1 continues to increase, and the fuse column 72 melts as the temperature inside the circuit breaker 1 rises to the melting point, the compression spring 71 loses support and the expansion lock tongue 7 is separated from the lock hole 33, and the circuit breaker 1 is released from the mounting block 3.
[0030] The circuit breaker 1 slides forward along the protrusion 25 under the elastic force of the release spring 31, and the folding bracket 32 stretches and opens accordingly, and at the same time, the wiring slot 24 is separated from the wiring board 22, and the circuit breaker 1 is disconnected and powered off. Finally, the circuit breaker 1 is suspended in the air by the folding bracket 32, which solves the problem that the existing circuit breaker cannot be disconnected due to spontaneous combustion and burns the adjacent circuit breaker.
Claims
1. A safety circuit breaker, comprising a circuit breaker (1), wherein a bimetallic strip (4) and a trigger device (5) are provided inside the circuit breaker (1), characterized in that: The circuit breaker (1) is provided with a lock tongue (7), and the upper and lower surfaces of the circuit breaker (1) are provided with a protective cover (2). The circuit breaker (1) and the protective cover (2) are movably connected, and the protective cover (2) is used to fix the installation wire (6). The circuit breaker (1) and the protective cover (2) are provided with a mounting block (3) at the rear side, and the rear wall of the protective cover (2) is fixedly connected to the front wall of the mounting block (3). The circuit breaker (1) and the mounting block (3) are fixedly connected by the lock tongue (7). A release spring (31) is provided between the circuit breaker (1) and the mounting block (3), and one end of the release spring (31) is fixedly connected to the front wall of the mounting block (3). The lock tongue (7) is retracted into the interior of the circuit breaker (1) by the increase of the internal temperature of the circuit breaker (1), so that the circuit breaker (1) and the mounting block (3) are released, and the circuit breaker (1) is pushed forward by the elastic force of the release spring (31) to separate from the mounting block (3) and cut off the power.
2. A safety circuit breaker according to claim 1, characterized in that: The bottom surface of the protective cover (2) is movably connected to the top surface of the circuit breaker (1); the top surface and the front side surface of the protective cover (2) are both provided with through holes; protrusions (25) are fixedly mounted on both sides of the bottom surface of the protective cover (2); and a sliding groove (11) is provided on the top surface of the circuit breaker (1) below the protrusion (25).
3. A safety circuit breaker according to claim 1, characterized in that: A collar (21) is provided below the through hole on the top surface of the protective cover (2), the outer wall of the collar (21) is fixedly connected to the inner wall of the protective cover (2), the collar (21) is in a rectangular tube shape with the mouth of the collar facing the vertical direction, a threaded hole is provided on the front side wall of the collar (21), a locking screw (23) is movably sleeved in the threaded hole on the front wall of the collar (21), the end of the locking screw (23) is rotatably connected to the front wall of the wiring board (22), the wiring board (22) is an L-shaped right-angle plate with the horizontal plate located on the front side of the vertical plate, and the wiring board (22) A through hole is provided on the upper edge of the vertical plate of the wiring board (22) in the axial direction of the locking screw (23); a limit rod (26) is sleeved in the through hole of the wiring board (22); both ends of the limit rod (26) are fixedly mounted on the inner wall of the collar (21); the horizontal plate of the wiring board (22) is movably sleeved with the top of the wiring slot (24); a rectangular hole matching the wiring board (22) is provided on the top of the wiring slot (24); one end of the wiring slot (24) is bent toward the top surface of the circuit breaker (1) and is at a right angle thereto; the other end of the wiring slot (24) is fixedly mounted inside the circuit breaker (1).
4. A safety circuit breaker according to claim 1, characterized in that: A folding bracket (32) is provided between the rear wall of the circuit breaker (1) and the front wall of the mounting block (3); the folding bracket (32) is formed by hingedly connecting multiple sections of rods end to end; and the two ends of the folding bracket (32) are respectively fixedly connected to the front wall of the mounting block (3) and the rear wall of the circuit breaker (1).
5. A safety circuit breaker according to claim 1, characterized in that: The mounting block (3) is provided with a lock hole (33) at the joint portion between the top surface and the bottom surface of the circuit breaker (1); a lock tongue (7) is movably sleeved on the outer wall of the circuit breaker (1) opposite the lock hole (33); one end of the lock tongue (7) away from the lock hole (33) is fixedly connected to one end of a compression spring (71); the other end of the compression spring (71) is fixedly connected to the inner wall of the circuit breaker (1); a fuse column (72) is fixedly mounted inside the circuit breaker (1); the lock tongue (7) is movably sleeved on the fuse column (72); and a disassembly column (34) is movably sleeved in the mounting block (3) outside the lock hole (33).