Novel breaker breaking mechanism

Abstract

The utility model belongs to the field of circuit breakers, and particularly relates to a novel circuit breaker breaking mechanism, which comprises a circuit breaker main body, a plurality of bolt holes are arranged on the circuit breaker main body, a plurality of inner cavities are arranged inside the circuit breaker main body, stop levers are movably assembled on the inner cavities, one end of each stop lever movably penetrates into the corresponding bolt hole, and the other end of each stop lever penetrates into the corresponding bolt hole. A top plate is fixedly assembled on the tops of the stop rods, telescopic springs are assembled on the stop rods, the two ends of each telescopic spring are fixedly assembled with the top plate and the inner cavity correspondingly, vertical plates are symmetrically and fixedly assembled on the top plate, a connecting plate is fixedly assembled between the two vertical plates, and arc blocks are fixedly assembled at the bottoms of the connecting plates; according to the novel circuit breaker breaking mechanism, through cooperation of the arc block and the telescopic spring, the problems that fixation of an existing cable needs to be completed by manually tightening a terminal screw, and due to the fact that the terminal screw is lack of a blocking and positioning mechanism, when the terminal screw is loosened, abnormal connection between the cable and a circuit breaker is easily caused, and normal use of equipment is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of circuit breakers, specifically a novel circuit breaker breaking mechanism. Background Technology

[0002] The breaking capacity of a circuit breaker refers to its ability to automatically detect safety risks when the current in a household exceeds the maximum current it can handle, and then interrupt the fault current. This breaking capacity includes the ultimate breaking capacity (Icu) and the operational breaking capacity (Ics). Circuit breakers are crucial protective devices in power systems; their primary function is to quickly interrupt current when a circuit fault occurs, protecting circuit equipment and personnel. The breaking capacity directly affects the circuit breaker's ability to respond to sudden faults and is a key indicator of its performance.

[0003] When installing existing circuit breakers, it is necessary to determine the wiring ports. Residual current circuit breakers (RCCBs) have four wiring ports: an input port and an output port. The input port connects to the power supply, and the output port connects to the load. A small section of the cable insulation is removed using wire strippers to expose the copper wire core. The wire core is then neatly arranged to ensure good contact. The cable can be secured by tightening the terminal screws. However, existing circuit breakers still have the following problems during use:

[0004] The current method of fixing cables requires manual tightening of terminal screws. Since the terminal screws lack a blocking and positioning mechanism, when the terminal screws become loose, it can easily lead to abnormal connection between the cable and the circuit breaker, affecting the normal use of the equipment. Therefore, it is necessary to develop a new type of circuit breaker disconnection mechanism for use in the current circuit breaker field. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, the current cable fixing requires manual tightening of terminal screws. Since the terminal screws lack a blocking and positioning mechanism, when the terminal screws become loose, it can easily lead to abnormal connection between the cable and the circuit breaker, affecting the normal use of the equipment. This utility model proposes a new type of circuit breaker disconnection mechanism.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a novel circuit breaker breaking mechanism, including a circuit breaker body, a plurality of bolt holes provided on the circuit breaker body, a plurality of inner cavities provided inside the circuit breaker body, the inner cavities being located above the bolt holes, a stop bar movably mounted on each inner cavity, one end of each stop bar movably penetrating into the bolt hole, a top plate fixedly mounted on the top of the stop bar, and a telescopic spring mounted on each stop bar, the two ends of the telescopic spring being fixedly mounted to the top plate and the inner cavity respectively.

[0007] Preferably, vertical plates are symmetrically fixedly mounted on the top plate, a connecting plate is fixedly mounted between two vertical plates, and an arc block is fixedly mounted on the bottom of each connecting plate.

[0008] Preferably, the circuit breaker body has multiple rotating cavities inside, which are located above the inner cavity. Each inner cavity has a traction port on its top surface, which communicates with the rotating cavity. A transmission screw is movably mounted on each of the multiple rotating cavities. One end of the transmission screw movably passes through the circuit breaker body, and a knob is fixedly mounted on the other end of the transmission screw.

[0009] Preferably, the transmission screw is threaded with multiple threaded sleeves, each of which is fixedly fitted with a traction block, which is movably assembled with the traction port.

[0010] Preferably, each of the traction blocks is fixedly fitted with a guide block, which is located in the inner cavity.

[0011] Preferably, one end of each guide block is provided with an arc surface, and the arc surface and the upper surface of the guide block are respectively attached to the arc block.

[0012] Preferably, the circuit breaker body is provided with multiple connection line interfaces.

[0013] Preferably, the circuit breaker body is equipped with multiple disconnecting switches.

[0014] The utility model is beneficial in that:

[0015] This invention involves using wire strippers to remove a small section of the cable insulation, exposing the copper core. The copper core is then inserted into the connecting cable interface. Turning a knob causes a transmission screw to rotate on multiple threaded blocks. These threaded blocks move a guide block on a traction block. The arc surface and upper surface of the guide block sequentially contact the arc block, applying force to it. This causes the connecting plate to move the top plate on the vertical plate upwards, stretching the telescopic spring and moving the stop bar away from the bolt hole. This facilitates screw installation. Once the bolt hole is fitted with a screw, the arc block is no longer under stress. The telescopic spring's elasticity causes the stop bar to move on the bolt hole, restricting bolt movement, preventing loosening, and improving the stability between the cable and the circuit breaker body. Attached Figure Description

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the novel circuit breaker disconnection mechanism of this utility model;

[0018] Figure 2 This is a cross-sectional view of the novel circuit breaker breaking mechanism of this utility model;

[0019] Figure 3 This is a cross-sectional view of the novel circuit breaker breaking mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the blocking mechanism structure of this utility model.

[0021] In the picture:

[0022] 10. Circuit breaker body; 11. Disconnecting switch; 12. Connecting wire interface; 13. Bolt hole;

[0023] 20. Knob; 21. Inner cavity; 22. Lead screw; 23. Stop lever;

[0024] 30. Rotating cavity; 31. Traction port; 32. Threaded sleeve block; 33. Traction block;

[0025] 40. Guide block; 41. Top plate; 42. Telescopic spring; 43. Vertical plate;

[0026] 50. Connecting plate; 51. Arc block. 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] The following is in conjunction with the appendix Figure 1 —4 provides further detailed description of this application.

[0029] This application discloses a novel circuit breaker breaking mechanism. (Refer to...) Figure 1 and Figure 3 as well as Figure 4A novel circuit breaker breaking mechanism includes a circuit breaker body 10 with multiple bolt holes 13. Multiple inner cavities 21 are located inside the circuit breaker body 10, above the bolt holes 13. Each inner cavity 21 is movably fitted with a stop bar 23, one end of which movably passes through the bolt hole 13. A top plate 41 is fixedly fitted to the top of the stop bar 23 within the inner cavity 21. A telescopic spring 42 is fixedly fitted between the top plate 41 and the inner cavity 21. Each stop bar 23 is fitted inside the telescopic spring 42. Symmetrical fixed springs 42 are mounted on the top plate 41. A vertical plate 43 is fixedly mounted, and a connecting plate 50 is fixedly mounted between the two vertical plates 43. An arc block 51 is fixedly mounted on the bottom of each connecting plate 50. When the arc block 51 is subjected to force, the connecting plate 50 drives the top plate 41 on the vertical plate 43 to move upward, and the telescopic spring 42 is stretched. The stop rod 23 is moved away from the bolt hole 13, which facilitates the installation of screws in the bolt hole 13. After the screw is installed in the bolt hole 13, the arc block 51 is no longer subjected to force. Under the elastic force of the telescopic spring 42, the stop rod 23 moves on the bolt hole 13, restricting the movement of the bolt and preventing the screw from loosening.

[0030] Reference Figure 2 and Figure 3 The circuit breaker body 10 has multiple rotating cavities 30 located above the inner cavity 21. Each inner cavity 21 has a traction port 31 communicating with the rotating cavities 30 on its top surface. A transmission screw 22 is movably mounted on each of the rotating cavities 30. One end of the transmission screw 22 movably passes through the circuit breaker body 10, and a knob 20 is fixedly mounted on the other end. Multiple threaded sleeves 32 are threaded onto the transmission screw 22, and each threaded sleeve 32 has a corresponding movable part mounted on it at the traction port 31. The traction block 33 is equipped with a guide block 40, which is located in the inner cavity 21. One end of the guide block 40 is provided with an arc surface. The arc surface and the upper surface of the guide block 40 are respectively attached to the arc block 51. When the knob 20 is turned, the transmission screw 22 rotates on multiple threaded sleeve blocks 32. The threaded sleeve blocks 32 drive the guide block 40 on the traction block 33 to move. The arc surface and the upper surface of the guide block 40 are respectively attached to the arc block 51, so that the arc block 51 is subjected to force.

[0031] Reference Figure 1 The circuit breaker body 10 is provided with multiple connection interfaces 12 and multiple disconnecting blades 11. A small section of the cable insulation is removed with wire strippers to expose the copper core, so that the copper core is inserted into the connection interface 12. Screws are installed on the bolt holes 13 to fix the copper core on the connection interface 12.

[0032] Working principle: A small section of the cable insulation is removed using wire strippers, exposing the copper core. The copper core is then inserted into the connecting wire interface 12. Turning the knob 20 causes the transmission screw 22 to rotate on multiple threaded sleeves 32. The threaded sleeves 32 drive the guide block 40 on the traction block 33 to move. The arc surface and upper surface of the guide block 40 successively contact the arc block 51, causing the arc block 51 to bear force. The connecting plate 50 drives the top plate 41 on the vertical plate 43 to move upward, stretching the telescopic spring 42. The stop bar 23 moves away from the bolt hole 13, facilitating the installation of screws in the bolt hole 13. After the screw is installed in the bolt hole 13, the arc block 51 is no longer subjected to force. Under the elastic force of the telescopic spring 42, the stop bar 23 moves on the bolt hole 13, restricting the movement of the bolt, preventing the screw from loosening, and improving the stability between the cable and the circuit breaker body 10.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A novel circuit breaker breaking mechanism, characterized in that: The circuit breaker body (10) includes a circuit breaker body (10) with multiple bolt holes (13) and multiple inner cavities (21) inside the circuit breaker body (10). The inner cavities (21) are located above the bolt holes (13). Each inner cavity (21) is movably fitted with a stop bar (23). One end of each stop bar (23) is movably inserted into the bolt hole (13). A top plate (41) is fixedly fitted to the top of each stop bar (23). Each stop bar (23) is fitted with a telescopic spring (42). The two ends of the telescopic spring (42) are fixedly fitted to the top plate (41) and the inner cavity (21) respectively.

2. The novel circuit breaker breaking mechanism according to claim 1, characterized in that: Vertical plates (43) are symmetrically fixedly mounted on the top plate (41), and a connecting plate (50) is fixedly mounted between the two vertical plates (43). An arc block (51) is fixedly mounted at the bottom of the connecting plate (50).

3. The novel circuit breaker breaking mechanism according to claim 2, characterized in that: The circuit breaker body (10) has multiple rotating cavities (30) inside. The rotating cavities (30) are located above the inner cavity (21). The top surface of the inner cavity (21) is provided with a traction port (31), which communicates with the rotating cavities (30). A transmission screw (22) is movably mounted on the multiple rotating cavities (30). One end of the transmission screw (22) movably passes through the circuit breaker body (10), and a knob (20) is fixedly mounted on one end of the transmission screw (22).

4. The novel circuit breaker breaking mechanism according to claim 3, characterized in that: The transmission screw (22) is threaded with multiple threaded sleeves (32), and each threaded sleeve (32) is fixedly fitted with a traction block (33). The traction block (33) is movably assembled with the traction port (31).

5. A novel circuit breaker breaking mechanism according to claim 4, characterized in that: Each of the traction blocks (33) is fixedly equipped with a guide block (40), which is located in the inner cavity (21).

6. A novel circuit breaker breaking mechanism according to claim 5, characterized in that: One end of each guide block (40) is provided with an arc surface, and the arc surface and the upper surface of the guide block (40) are respectively attached to the arc block (51).

7. A novel circuit breaker breaking mechanism according to claim 1, characterized in that: The circuit breaker body (10) is provided with multiple connection line interfaces (12).

8. The novel circuit breaker breaking mechanism according to claim 1, characterized in that: The circuit breaker body (10) is equipped with multiple disconnecting switches (11).

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