Circuit breaker pre-closing alarm structure and circuit breaker
By setting a pre-closing alarm structure in the circuit breaker and using the handle to drive the linkage component to trigger the pre-closing detection switch, the problem of no warning during the closing process is solved, and the operator is reminded before closing, which significantly improves safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-30
- Publication Date
- 2026-05-15
AI Technical Summary
Existing circuit breakers cannot provide effective early warning before actual closing occurs during the closing process, posing a safety hazard.
Design a circuit breaker pre-closing alarm structure, including a housing, an operating mechanism, a pre-closing detection switch and a first linkage component. The linkage component is moved by a handle, which triggers the pre-closing detection switch to issue an early warning during the closing process.
Setting up warning points during the closing operation reminds the operator and surrounding personnel that the circuit breaker is about to close, improving operational safety and avoiding safety hazards caused by misoperation.
Smart Images
Figure CN122051082A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of low-voltage electrical equipment technology, and in particular to a circuit breaker pre-closing alarm structure and a circuit breaker. Background Technology
[0002] In existing technologies, circuit breakers typically consist of a housing and an operating mechanism, with a handle on the operating mechanism used for manual opening and closing operations. During the closing process, the operator manually moves the handle from the open position, through an intermediate position, and finally to the closed position to connect the circuit. However, in actual operation, especially in special situations where operational safety is paramount, if the circuit is closed by mistake or without proper safety precautions, and the operator or other personnel on site fail to notice in time, it could lead to electric shock or equipment damage, posing a significant safety hazard. Therefore, how to provide effective early warning during the closing process, before the actual closing occurs, is a problem that urgently needs to be solved in existing technologies. Summary of the Invention
[0003] The purpose of this invention is to provide a circuit breaker pre-closing alarm structure and circuit breaker to solve the technical problem in the prior art that it is impossible to provide early warning before the actual closing occurs during the circuit breaker closing process, which poses a safety hazard.
[0004] In a first aspect, the present invention provides a circuit breaker pre-closing alarm structure, comprising: a housing, an operating mechanism, a pre-closing detection switch, and a first linkage component; The operating mechanism is disposed on the housing, and the operating mechanism includes a handle for opening and closing the circuit breaker. The handle has an open position, a close position, and a pre-closing position located between the open position and the close position. The pre-closing detection switch is disposed inside the housing; The first linkage component is disposed inside the housing and is connected to the handle via a transmission connection; During the closing process, the handle drives the first linkage component to move. When the handle passes the pre-closing position, the first linkage component triggers the pre-closing detection switch to enable the pre-closing detection switch to issue a pre-closing warning.
[0005] In an optional embodiment, the first linkage component includes a triggering part, which is used to trigger the pre-closing detection switch; The handle triggers the pre-closing detection switch by moving the trigger part up and down.
[0006] In an optional embodiment, the operating mechanism further includes a handle bracket and a handle guide shaft. The handle bracket is provided with a guide hole extending along the movement direction of the handle. The handle guide shaft is connected to the handle, and the end of the handle guide shaft is inserted into the guide hole. The first linkage component includes a pre-closing transmission component and a pre-closing linkage component. The pre-closing linkage component includes the trigger part. The pre-closing transmission component is fixedly connected to the handle and passes through the guide hole to be drively connected to the pre-closing linkage component. During the closing process, the handle drives the pre-closing transmission component to move within the guide hole. The pre-closing transmission component causes the pre-closing linkage component to move. When the handle passes the pre-closing position, the triggering part of the pre-closing linkage component triggers the pre-closing detection switch.
[0007] In an optional embodiment, the pre-closing transmission component is a transmission shaft, which is disposed at the end of the handle guide shaft.
[0008] In an optional embodiment, the pre-closing linkage further includes a driving part and a movable connecting part, wherein the driving part is provided with a connecting hole and the movable connecting part is movably connected to the housing; The pre-closing transmission component passes through the connecting hole, and the connecting hole includes a first section and a second section along the direction from the open position to the closed position. During the closing process, the handle drives the pre-closing transmission component to move within the first section, keeping the pre-closing linkage component stationary. The handle drives the pre-closing transmission component to move within the second section, causing the pre-closing linkage component to move up and down, thereby driving the trigger part to move up and down to trigger the pre-closing detection switch.
[0009] In an optional embodiment, the connection hole further includes a smooth transition section located between the first segment and the second segment.
[0010] In an optional embodiment, the first linkage component further includes a pre-closing bracket, which is connected to the housing, and the movable connecting part is movably connected to the pre-closing bracket.
[0011] In an optional embodiment, the pre-closing bracket includes a frame and a plurality of stepped shafts disposed on the frame and used to limit the movement direction and range of the pre-closing linkage. The movable connection part is provided with a movable hole, and the stepped shaft passes through the movable hole. Along the axial direction of the stepped shaft, one end of the movable connection part is limited by the stepped surface of the stepped shaft, and the other end is limited by a snap ring.
[0012] In an optional embodiment, a shunt trip bracket disposed within the housing is further included, and the pre-closing bracket is mounted on the shunt trip bracket.
[0013] In an optional embodiment, the circuit breaker also includes a closing detection switch and a second linkage assembly disposed within the housing. The circuit breaker further includes a rotating shaft for transmitting opening and closing actions, and the second linkage assembly is drively connected to the rotating shaft. The second linkage component includes a first transmission rod that cooperates with the rotating shaft and a second transmission rod that cooperates with the closing detection switch. During the closing process, the rotating shaft causes the first transmission rod to drive the second transmission rod to move through the closing action. When the rotating shaft completes the closing action, the second transmission rod triggers the closing detection switch.
[0014] Secondly, the present invention provides a circuit breaker including the circuit breaker pre-closing alarm structure described in any of the foregoing embodiments.
[0015] Compared with the prior art, the technical advantages of the circuit breaker pre-closing alarm structure and the circuit breaker provided by the present invention are as follows: The circuit breaker pre-closing alarm structure provided by the present invention includes: a housing, an operating mechanism, a pre-closing detection switch, and a first linkage component; the operating mechanism is disposed on the housing, and the operating mechanism includes a handle for opening and closing, the handle having an open position, a closed position, and a pre-closing position located between the open position and the closed position; the pre-closing detection switch is disposed inside the housing; the first linkage component is disposed inside the housing and is pulsatorically connected to the handle; during the closing process, the handle drives the first linkage component to move, and when the handle passes the pre-closing position, the first linkage component triggers the pre-closing detection switch to cause the pre-closing detection switch to provide a pre-closing warning.
[0016] By incorporating a first linkage component connected to the handle and a pre-closing detection switch, when the operator performs a closing operation, the handle moves from the open position to the closed position. During this movement, the first linkage component moves accordingly. When the handle reaches the pre-closing position (a specific position between the open and closed positions), the first linkage component triggers the pre-closing detection switch, causing it to issue a warning signal. Since the pre-closing position is between the open and closed positions and is not the final closing position, the warning signal is issued before the actual closing occurs. This effectively sets a "warning point" during the closing operation. If the operator accidentally moves the handle to this warning point due to misoperation or lack of safety precautions, an alarm will be triggered, alerting the operator and surrounding personnel that the circuit breaker is about to close. This prompts immediate safety measures or cessation of operation, effectively addressing safety hazards caused by misoperation or lack of advance warning during closing operations and significantly improving operational safety.
[0017] The circuit breaker provided by the present invention includes the aforementioned circuit breaker pre-closing alarm structure. Therefore, the technical advantages and effects achieved by the circuit breaker pre-closing alarm structure are not described in detail here.
[0018] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram showing the installation positions of the operating mechanism, the pre-closing detection switch, and the first linkage component provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the pre-closing linkage provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the pre-closing bracket provided in an embodiment of the present invention; Figure 4 A schematic diagram showing the pre-closing linkage component provided in an embodiment of the present invention mounted on a shunt trip bracket via a pre-closing bracket. Figure 5 This is a schematic diagram of the pre-closing detection switch and the first linkage component provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the pre-closing alarm structure provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the installation of the pre-closing linkage and the pre-closing bracket provided in an embodiment of the present invention; Figure 8 A schematic diagram showing the interaction of the rotating shaft, the first transmission rod, and the second transmission rod as provided in an embodiment of the present invention.
[0021] Icons: 1-House; 2-Operating mechanism; 3-Handle; 4-Pre-closing detection switch; 5-Pre-closing linkage component; 6-Handle bracket; 7-Guide hole; 8-Handle guide shaft; 9-Drive shaft; 10-Drive unit; 11-Modible connection unit; 12-Trigger unit; 13-Connecting hole; 14-First section; 15-Second section; 16-Smooth transition section; 17-Pre-closing bracket; 18-Frame; 19-Stepped shaft; 20-Modible hole; 21-Snap ring; 22-Shunting trip bracket; 23-Closing detection switch; 24-Second linkage component; 25-First linkage component; 26-Rotating shaft; 27-First transmission rod; 28-Second transmission rod; 29-Protrusion. Detailed Implementation
[0022] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0025] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.
[0026] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.
[0027] The specific structure is as follows: Figures 1 to 8 As shown.
[0028] This embodiment provides a circuit breaker pre-closing alarm structure, including: a housing 1, an operating mechanism 2, a pre-closing detection switch 4, and a first linkage component 25; the operating mechanism 2 is disposed on the housing 1, and the operating mechanism 2 includes a handle 3 for opening and closing, the handle 3 having an open position, a closed position, and a pre-closing position located between the open position and the closed position; the pre-closing detection switch 4 is disposed inside the housing 1; the first linkage component 25 is disposed inside the housing 1 and is pulsatorically connected to the handle 3; during the closing process, the handle 3 drives the first linkage component 25 to move, and when the handle 3 passes the pre-closing position, the first linkage component 25 triggers the pre-closing detection switch 4 to cause the pre-closing detection switch 4 to provide a pre-closing warning.
[0029] In this embodiment, a first linkage component 25 and a pre-closing detection switch 4 are configured to be connected to the handle 3 for transmission. When the operator performs a closing operation on the handle 3, the handle 3 moves from the open position to the closed position. During the movement of the handle 3, the first linkage component 25 moves accordingly. When the handle 3 moves to the pre-closing position (i.e., a specific position between the open and closed positions), the first linkage component 25 triggers the pre-closing detection switch 4, causing the pre-closing detection switch 4 to issue a warning signal. Since the pre-closing position is located between the open and closed positions and is not the final closing position, the warning signal is issued before the actual closing occurs. This is equivalent to setting a "warning point" during the closing operation. When the operator accidentally moves the handle 3 to this warning point due to misoperation or lack of safety precautions, an alarm will be triggered, reminding the operator and surrounding personnel that the circuit breaker is about to close and requesting immediate safety measures or cessation of operation. This effectively solves the problem of safety hazards caused by misoperation or lack of advance warning during the closing operation, significantly improving operational safety.
[0030] Specifically, during the closing process, when the operator moves the handle 3 from the open position to the closed position, the handle 3 will drive the first linkage component 25 to move. When the handle 3 moves to the pre-closing position, the first linkage component 25 just triggers the pre-closing detection switch 4, causing the pre-closing detection switch 4 to issue a warning signal, thereby prompting the operator before the actual closing occurs.
[0031] In this embodiment, to achieve reliable transmission between the handle 3 and the first linkage component 25, the operating mechanism 2 further includes a handle frame 6 and a handle guide shaft 8. The handle frame 6 is provided with a guide hole 7 extending along the movement direction of the handle 3. The handle guide shaft 8 is connected to the handle 3, and its end is inserted into the guide hole 7. The first linkage component 25 includes a pre-closing transmission component and a pre-closing linkage component 5. The pre-closing transmission component is fixedly connected to the handle 3 and passes through the guide hole 7 to drive the pre-closing linkage component 5. During the closing process, the handle 3 drives the pre-closing transmission component to move within the guide hole 7, and the pre-closing transmission component drives the pre-closing linkage component 5 to move. When the handle 3 passes the pre-closing position, the pre-closing linkage component 5 triggers the pre-closing detection switch 4.
[0032] In this embodiment, the pre-closing transmission component is a drive shaft 9, which is located at the end of the handle guide shaft 8. The handle guide shaft 8 and the drive shaft 9 can be manufactured separately and then connected, or they can be integrally formed. This design allows the drive shaft 9 and the handle guide shaft 8 to share a single guide hole 7, resulting in a simple and compact structure.
[0033] In this embodiment, to achieve motion control of the pre-closing linkage 5, the pre-closing linkage 5 includes a driving part 10, a movable connecting part 11, and a triggering part 12. The driving part 10 is provided with a connecting hole 13. The movable connecting part 11 is movably connected to the housing 1. The triggering part 12 is used to trigger the pre-closing detection switch 4. The pre-closing transmission component passes through the connecting hole 13. The connecting hole 13 includes a first section 14 and a second section 15 along the direction from the open position to the closed position.
[0034] During the closing process, in the initial stage, the handle 3 drives the transmission shaft 9 to move within the first section 14 of the connecting hole 13 via the handle guide shaft 8. At this time, the first section 14 is parallel to and directly opposite the guide hole 7, while the second section 15 is misaligned with the guide hole 7. That is, the first section 14 and the second section 15 are misaligned along the direction of movement of the pre-closing linkage 5. Therefore, when the transmission shaft 9 moves within the first section 14, it only slides relative to the drive part 10 and does not drive the entire pre-closing linkage 5 to move. At this time, the pre-closing linkage 5 remains stationary, and the trigger part 12 remains in contact with the pre-closing detection switch 4, triggering the pre-closing detection switch 4 to issue the first signal. The pre-closing detection switch 4 is in a stable state. As the handle 3 continues to move, the drive shaft 9 moves into the second section 15 of the connecting hole 13. Due to the misalignment of the first section 14 and the second section 15, in order for the drive shaft 9 to continue moving along the extension direction of the connecting hole 13, the drive shaft 9 will make the second section 15 parallel and aligned with the guide hole 7 to ensure the normal movement of the drive shaft 9. That is, the drive shaft 9 will cause the drive part 10 to move, and through the movable connecting part 11, the entire pre-closing linkage 5 will move. The movement of the pre-closing linkage 5 drives the trigger part 12 to gradually move away from the trigger end of the pre-closing detection switch 4. When the handle 3 moves to the pre-closing position, the trigger part 12 just disengages from the trigger end of the pre-closing detection switch 4, thereby triggering the pre-closing detection switch 4 to issue a second signal. Through this "no-load travel first, then working travel" design, the timing of the pre-closing linkage 5 being driven can be precisely controlled, ensuring that the alarm is triggered only when the handle 3 reaches the pre-closing position. The trigger end of the pre-closing detection switch 4 moves up and down. When the circuit is opened, the trigger part 12 presses against the trigger end, keeping the trigger end in the upper position. When the drive shaft 9 moves into the second section 15 of the connecting hole 13, it forces the pre-closing linkage 5 to move downward in the vertical direction, causing the trigger end to move downward until the trigger part 12 just disengages from the trigger end of the pre-closing detection switch 4, thereby triggering the pre-closing detection switch 4 to issue a second signal.
[0035] It should be noted that the pre-closing position must be before the handle closing process becomes irreversible, for example, before the handle passes the dead point. After the handle 3 passes the dead point, the closing process becomes irreversible, and the warning function is lost. During the closing process, the main tension spring and the upper connecting rod of the operating mechanism 2 gradually overlap from an angle, and then gradually have an angle. When the main tension spring and the upper connecting rod overlap, it is the dead point position.
[0036] In this embodiment, to ensure a smooth transition of the drive shaft 9 between the first section 14 and the second section 15, the connecting hole 13 also includes a smooth transition section 16 located between the first section 14 and the second section 15. This smooth transition section 16 can prevent the drive shaft 9 from getting stuck during the transition, ensuring smooth operation, and can also cause the pre-closing linkage 5 to move during the transition.
[0037] In this embodiment, in order to stably install the pre-closing linkage 5 inside the housing 1, the first linkage assembly 25 further includes a pre-closing bracket 17. The pre-closing bracket 17 is connected to the housing 1, and the movable connecting part 11 is movably connected to the pre-closing bracket 17.
[0038] Specifically, the pre-closing bracket 17 includes a frame 18 and multiple stepped shafts 19 disposed on the frame 18. The stepped shafts 19 are arranged sequentially along the moving direction of the pre-closing linkage 5. A movable hole 20 is provided on the movable connecting part 11. The stepped shafts 19 pass through the movable holes 20. Along the axial direction of the stepped shafts 19, one end of the movable connecting part 11 is limited by the stepped surface of the stepped shaft 19, and the other end is limited by a retaining spring 21. In this way, the movable connecting part 11 is restricted on the multiple stepped shafts 19, allowing it to move along the moving direction of the pre-closing linkage 5 without axial movement or rotation around the stepped shafts 19, thus ensuring the accuracy and stability of the movement of the pre-closing linkage 5.
[0039] In this embodiment, the circuit breaker also includes a shunt trip bracket 22 disposed within the housing 1. The frame 18 of the pre-closing bracket 17 is fixedly mounted on the shunt trip bracket 22. The shunt trip bracket 22 is a common structure inside circuit breakers used to install accessories such as shunt trip units. Mounting the pre-closing bracket 17 on it achieves functional integration and a compact structure.
[0040] In this embodiment, to confirm the final closing state of the circuit breaker and further improve safety, the pre-closing alarm structure also includes a closing detection switch 23 and a second linkage component 24 disposed within the housing 1. The circuit breaker also includes a rotating shaft 26 for transmitting opening and closing actions. The second linkage component 24 is drivenly connected to the rotating shaft 26. The second linkage component 24 includes a first transmission rod 27 cooperating with the rotating shaft 26 and a second transmission rod 28 cooperating with the closing detection switch 23. The first transmission rod 27 and the second transmission rod 28 are respectively equipped with return springs. During the closing process, when the closing action of the handle 3 is transmitted to the rotating shaft 26 through the linkage mechanism of the operating mechanism 2, the rotating shaft 26 rotates. The rotating shaft 26 causes the first transmission rod 27 to drive the second transmission rod 28 through the closing action. When the rotating shaft 26 completes the closing action, that is, when the circuit breaker is truly connected to the circuit, the second transmission rod 28 triggers the closing detection switch 23, sending a closing completion signal. In this way, the pre-closing detection switch 4 issues a warning signal, and the closing detection switch 23 issues a true closing signal. The combination of these two signals allows for dual monitoring of the entire closing process, further enhancing safety and intelligence. When both the true closing signal and the warning signal are present simultaneously, it indicates that the circuit breaker is in the closed state.
[0041] Specifically, during tripping and opening, the rotating shaft 26 rotates counterclockwise to abut against the first transmission rod 27 (specifically, the protrusion 29 on the rotating shaft 26 abuts against the first transmission rod 27). The first transmission rod 27 pushes the second transmission rod 28, causing the trigger end of the closing detection switch 23 to be pressed. During the closing process, the rotating shaft 26 rotates clockwise, while the first transmission rod 27 (under the action of the reset force) rotates counterclockwise and the second transmission rod 28 (under the action of the reset force) rotates clockwise away from the trigger end of the closing detection switch 23. The closing detection switch 23 is released and outputs a closing signal.
[0042] It should be noted that the second linkage component 24 and the closing detection switch 23 can be installed in the housing of the closing detection switch, making the second linkage component 24 and the closing detection switch 23 an independent module installed in the housing 1, which makes it convenient for users to select the closing detection function.
[0043] In this embodiment, the first linkage component 25 is not limited to the combination of the drive shaft 9 and the pre-closing linkage component 5 described above. The first linkage component 25 can also be implemented in other ways. For example, the first linkage component 25 can be a linkage plate. One end of the linkage plate is fixedly connected to the handle 3, and the other end passes through the guide hole 7 on the handle bracket 6 and extends to the vicinity of the trigger end of the pre-closing detection switch 4. During the closing process, the handle 3 drives the linkage plate to move within the guide hole 7. Before the handle 3 reaches the pre-closing position, the linkage plate always rests against the trigger end of the pre-closing detection switch 4 and generates relative movement with it. When the handle 3 moves to the pre-closing position, a specific part of the linkage plate just disengages from the trigger end of the pre-closing detection switch 4, thereby triggering the pre-closing detection switch 4 to issue a warning signal. This linkage plate structure also has the above-mentioned effects, which will not be elaborated further here.
[0044] In this embodiment, the pre-closing detection switch 4 can be a micro switch. Of course, the pre-closing detection switch 4 can also be a limit switch, a combination of a reed switch and a magnet, or a photoelectric switch (such as a through-beam or reflective type), etc. As long as it can be triggered by the triggering part 12 of the pre-closing linkage 5 and generate a corresponding signal, it is acceptable. The closing detection switch 23 can be a micro switch. Of course, the closing detection switch 23 can also be a limit switch, a combination of a reed switch and a magnet, or a photoelectric switch (such as a through-beam or reflective type), etc. As long as it can be triggered by the second linkage component 24 and generate a corresponding signal, it is acceptable. The second linkage component 24 can have the same structure as the first linkage component 25, or it can be different, as long as it meets the requirements.
[0045] This embodiment provides a circuit breaker including the aforementioned circuit breaker pre-closing alarm structure. Therefore, the technical advantages and effects achieved by this circuit breaker include those achieved by the aforementioned circuit breaker pre-closing alarm structure, which will not be elaborated here.
[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A circuit breaker pre-closing alarm structure, characterized in that, include: Housing (1), operating mechanism (2), pre-closing detection switch (4) and first linkage assembly (25); The operating mechanism (2) is disposed on the housing (1). The operating mechanism (2) includes a handle (3) for opening and closing the circuit breaker. The handle (3) has an opening position, a closing position, and a pre-closing position located between the opening position and the closing position. The pre-closing detection switch (4) is disposed inside the housing (1); The first linkage component (25) is disposed inside the housing (1) and is connected to the handle (3) in a transmission manner; During the closing process, the handle (3) drives the first linkage component (25) to move. When the handle (3) passes the pre-closing position, the first linkage component (25) triggers the pre-closing detection switch (4) so that the pre-closing detection switch (4) can provide a pre-closing warning.
2. The circuit breaker pre-closing alarm structure according to claim 1, characterized in that, The first linkage component (25) includes a triggering part (12), which is used to trigger the pre-closing detection switch (4); The handle (3) triggers the pre-closing detection switch (4) by driving the trigger part (12) to move up and down.
3. The circuit breaker pre-closing alarm structure according to claim 2, characterized in that, The operating mechanism (2) further includes a handle frame (6) and a handle guide shaft (8). The handle frame (6) is provided with a guide hole (7) extending along the movement direction of the handle (3). The handle guide shaft (8) is connected to the handle (3), and the end of the handle guide shaft (8) is inserted into the guide hole (7). The first linkage component (25) includes a pre-closing transmission component and a pre-closing linkage component (5). The pre-closing linkage component (5) includes the trigger part (12). The pre-closing transmission component is fixedly connected to the handle (3) and passes through the guide hole (7) to be connected to the pre-closing linkage component (5). During the closing process, the handle (3) drives the pre-closing transmission component to move within the guide hole (7). The pre-closing transmission component causes the pre-closing linkage component (5) to move. When the handle (3) passes the pre-closing position, the trigger part (12) of the pre-closing linkage component (5) triggers the pre-closing detection switch (4).
4. The circuit breaker pre-closing alarm structure according to claim 3, characterized in that, The pre-closing transmission component is a transmission shaft (9), which is located at the end of the handle guide shaft (8).
5. The circuit breaker pre-closing alarm structure according to claim 3, characterized in that, The pre-closing linkage (5) also includes a drive unit (10) and a movable connection unit (11). The drive unit (10) is provided with a connection hole (13), and the movable connection unit (11) is movably connected to the housing (1). The pre-closing transmission component passes through the connecting hole (13), and the connecting hole (13) includes a first section (14) and a second section (15) along the direction from the opening position to the closing position. During the closing process, the handle (3) drives the pre-closing transmission component to move in the first section (14), keeping the pre-closing linkage component (5) stationary. The handle (3) drives the pre-closing transmission component to move in the second section (15), causing the pre-closing linkage component (5) to move up and down, thereby driving the trigger part (12) to move up and down to trigger the pre-closing detection switch (4).
6. The circuit breaker pre-closing alarm structure according to claim 5, characterized in that, The connecting hole (13) also includes a smooth transition section (16) located between the first section (14) and the second section (15).
7. The circuit breaker pre-closing alarm structure according to claim 5, characterized in that, The first linkage component (25) also includes a pre-closing bracket (17), which is connected to the housing (1), and the movable connecting part (11) is movably connected to the pre-closing bracket (17).
8. The circuit breaker pre-closing alarm structure according to claim 7, characterized in that, The pre-closing bracket (17) includes a frame (18) and a plurality of stepped shafts (19) disposed on the frame (18) and used to limit the movement direction and range of the pre-closing linkage (5). The movable connecting part (11) is provided with a movable hole (20). The stepped shaft (19) passes through the movable hole (20). Along the axial direction of the stepped shaft (19), one end of the movable connecting part (11) is limited by the stepped surface of the stepped shaft (19), and the other end is limited by a snap ring (21).
9. The circuit breaker pre-closing alarm structure according to claim 7, characterized in that, It also includes a shunt trip bracket (22) disposed within the housing (1), and the pre-closing bracket (17) is mounted on the shunt trip bracket (22).
10. The circuit breaker pre-closing alarm structure according to any one of claims 1-9, characterized in that, It also includes a closing detection switch (23) and a second linkage assembly (24) disposed in the housing (1). The circuit breaker also includes a rotating shaft (26) for transmitting opening and closing actions. The second linkage assembly (24) is connected to the rotating shaft (26) in a transmission connection. The second linkage component (24) includes a first transmission rod (27) that cooperates with the rotating shaft (26) and a second transmission rod (28) that cooperates with the closing detection switch (23). During the closing process, the rotating shaft (26) causes the first transmission rod (27) to drive the second transmission rod (28) to move through the closing action. When the rotating shaft (26) completes the closing action, the second transmission rod (28) triggers the closing detection switch (23).
11. A circuit breaker, characterized in that, Includes the circuit breaker pre-closing alarm structure as described in any one of claims 1-10.