A switch automatic disconnection mechanism

Abstract

The present invention discloses an automatic switch disconnecting mechanism, which includes a housing, a mechanism main shaft that penetrates the housing and is integrally provided with a switch knob. A first hole that cooperates with the mechanism main shaft is provided on the front end face of the housing, and a second hole that cooperates with the mechanism main shaft is provided on the rear end face. Inside the housing, there are a shaft pin, a rotating shaft sleeve, a spring, a locking mechanism, a locking mechanism return spring, and a triggering mechanism. The present invention enables the circuit system of the inverter to achieve the purpose of remotely disconnecting the inverter system loop without manual operation when encountering special working conditions such as overload and short circuit. When the switch with the automatic disconnecting mechanism is subjected to relevant tests such as electrical life and mechanical life, it will not be affected by the automatic disconnecting mechanism. The present invention uses a spring to provide the rotation torque of the rotating shaft sleeve, and the spring of the mechanism main shaft inside the switch controls the rotation torque of the switch. When the switch is disconnected due to abnormal conditions, a greater torque is required to turn it back to the working position, realizing the distinction between the normal and abnormal disconnection of the switch.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit protection, in particular to an automatic disconnect mechanism for a switch. Background Art

[0002] Photovoltaic (PV), short for solar photovoltaic (SPV), is a novel power generation system that utilizes the photovoltaic effect of semiconductor materials in solar cells to directly convert solar radiation into electricity. It operates in both standalone and grid-connected modes. With the widespread deployment of PV systems, their safety has become a growing concern and a hot topic within the industry in recent years. PV DC switches in PV systems are used in inverters and control the operating status of multiple core components. The reliability of these switches is crucial not only to the smooth operation of the entire PV system but also to the stable development of the PV industry.

[0003] Looking back at the development of the photovoltaic industry over the past few years, the industry has gradually established standards for the use of photovoltaic switches. Major manufacturers have also been researching ways to enhance the arc extinguishing capability and disconnection speed of switch contacts. However, the knob-type photovoltaic switches currently used in the market are generally manually operated, requiring operators to manually disconnect the photovoltaic switch upon detection of a fault, which undoubtedly increases operator safety risks. Furthermore, they lack the ability to automatically and quickly disconnect the switch when a problem occurs, which can easily cause inverter burnout and fire, seriously threatening the safe operation of photovoltaic power plants. Therefore, how to quickly disconnect the DC switch when a circuit problem occurs has become a pressing issue for technicians in the photovoltaic system technology field. Summary of the Invention

[0004] In order to solve the above technical problems, the technical solution provided by the present invention is as follows: a switch automatic disconnect mechanism, comprising a housing, a mechanism main shaft penetrating the housing and integrally arranged with a switch knob, the front end surface of the housing is provided with a hole 1 cooperating with the mechanism main shaft, the rear end surface is provided with a hole 2 cooperating with the mechanism main shaft, the interior of the housing is provided with an axis pin, a rotating shaft sleeve, a spring, a locking mechanism, a locking mechanism reset spring, and a trigger mechanism, the axis pin is fixedly connected to the mechanism main shaft, the rotating shaft sleeve is sleeved on the mechanism main shaft and a guide pin is provided on one side of its outer ring, the rotating shaft sleeve is provided with a fan-shaped hole cooperating with the axis pin to achieve engagement with the mechanism The one-way linkage of the main shaft, the spring is sleeved on the main shaft of the mechanism between the rotating sleeve and the housing, one end of the spring is fixedly connected to the housing, and the other end is fixedly connected to the rotating sleeve, the locking mechanism includes a lock assembly, a trigger assembly, and a rotating assembly, the locking mechanism is used to lock the rotating sleeve through the lock assembly and the guide pin, and the trigger assembly and the trigger mechanism are used to trigger the locking mechanism, and the locking mechanism is driven to rotate by the rotating assembly to unlock the rotating sleeve, wherein the end of the trigger assembly is connected to the housing through the locking mechanism reset spring; the trigger mechanism includes a magnetic flux converter, an electromagnet or a motor;

[0005] The rotating shaft sleeve is provided with a groove, and a microswitch trigger rod is sleeved on the rotating shaft sleeve. One or more microswitches corresponding thereto are arranged on the outer side of the shaft sleeve. When the rotating shaft sleeve is locked by the locking mechanism, the rotating shaft sleeve and the microswitch trigger rod cause the microswitch to switch signals or states; a wiring PCB board is also arranged in the housing.

[0006] As an improvement, the angle of the fan-shaped hole on the rotating shaft sleeve is not less than 90°. The guide pin is of an inverted wedge structure, and the surface in contact with and locked by the trigger assembly is a plane, while the other surface is a streamlined arc surface.

[0007] As an improvement, the rotating component of the locking mechanism is a locking lever, the locking component is a locking block, and the trigger component is a trigger rod. Both ends of the locking lever are connected to the housing through locking lever brackets. One end thereof is connected to the locking block, and the other end extends out of the locking lever bracket and is connected to the trigger rod. When the trigger mechanism fires the trigger component, the rotating component drives the locking component to rotate around its central axis to release the locking of the rotating shaft sleeve.

[0008] As an improvement, the unlocking force arm of the trigger component is more than twice the locking force arm of the locking component, and the unlocking surface of the trigger component and the rotation center of the locking component are arranged in a staggered manner.

[0009] As an improvement, the rotating component of the locking mechanism is a short shaft, the locking component is a stop plate, and the trigger component is a horizontal plate. The short shaft is connected to the housing. The stop plate and the horizontal plate are integrally arranged and hinged on the short shaft. When the trigger mechanism fires the trigger component, the trigger component drives the locking component to rotate around the rotating component to release the locking of the rotating shaft sleeve.

[0010] As an improvement, the rotating component of the locking mechanism is a support shaft, the locking component is a cross plate, and the trigger component is a trigger circular plate. The support shaft is connected to the housing. The cross plate is rotatably connected to the short shaft and one end thereof is connected to the trigger circular plate. When the trigger mechanism fires the trigger component, the trigger component drives the locking component to rotate around the rotating component to release the locking of the rotating shaft sleeve.

[0011] As an improvement, when the trigger mechanism is a magnetic flux converter, the trigger mechanism is arranged below the trigger component and connected to the housing, and a reset button is correspondingly arranged thereon or on one side. One end of the reset button is connected to the magnetic flux converter through a reset button spring or directly, and the other end extends out of the front end face of the housing. A protective cover assembly corresponding to the extending end of the reset button is arranged on the front end face of the housing. The protective cover assembly includes a threaded sleeve sleeved on the reset button, a protective cap and a compression nut arranged in cooperation with the threaded sleeve. The protective cap and the housing are connected through a connecting member.

[0012] As an improvement, when the trigger mechanism is an electromagnet, the trigger mechanism is arranged above or below the trigger assembly and connected to the shell, and the locking mechanism reset spring is arranged on one side of the electromagnet or sleeved on the electromagnet or arranged on one side of the trigger assembly.

[0013] As an improvement, when the trigger mechanism is a motor, a trigger cam is connected to the upper part of the motor, and a push rod is provided at the lower part of the trigger assembly. The push rod is connected to the shell through a push rod seat, and moves up and down along the push rod seat under the action of the trigger cam. A push rod reset spring is also provided between the outside of the push rod and the push rod seat.

[0014] As an improvement, the spring is a torsion spring or a tension spring or a combination spring of a torsion spring and a tension spring sleeved inside the rotating sleeve.

[0015] By adopting the above structure, the present invention has the following advantages: the present invention has a simple structure and is easy to operate, so that when the inverter circuit system encounters special operating conditions such as overload and short circuit, the purpose of remotely disconnecting the inverter system circuit can be achieved without manual operation. At the same time, the switch with an automatic disconnect mechanism will not be affected by the automatic disconnect mechanism when conducting relevant electrical life and mechanical life tests. The present invention uses a spring to provide the rotational torque of the rotating shaft sleeve, and the main shaft spring of the internal mechanism of the switch controls the rotational torque of the switch. When the switch is disconnected due to an abnormal situation, it requires greater torque to re-tighten it to the working position, thereby distinguishing between normal and abnormal switch disconnections. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a first embodiment of an automatic disconnect mechanism for a switch according to the present invention.

[0017] Figure 2 It is a schematic diagram of a rotating shaft sleeve in a first embodiment of an automatic disconnect mechanism of a switch according to the present invention.

[0018] Figure 3 It is a schematic diagram of the internal structure of a switch automatic disconnect mechanism embodiment 1 of the present invention.

[0019] Figure 4 It is a schematic diagram of the front portion of a housing of a first embodiment of an automatic disconnect mechanism for a switch according to the present invention.

[0020] Figure 5 It is a schematic diagram of the rear portion of a housing of a first embodiment of an automatic disconnect mechanism for a switch according to the present invention.

[0021] Figure 6 It is a schematic diagram of a protective cover assembly in a first embodiment of an automatic disconnect mechanism for a switch according to the present invention.

[0022] Figure 7It is a schematic diagram of the open state of the protective cover assembly in the first embodiment of an automatic switch-off mechanism of the present invention.

[0023] Figure 8 It is a schematic diagram when multiple microswitches are used in an automatic switch-off mechanism of the present invention.

[0024] Figure 9 It is a schematic diagram when a tension spring is used in an automatic switch-off mechanism of the present invention.

[0025] Figure 10 It is a schematic diagram of the structure of the second embodiment of an automatic switch-off mechanism of the present invention.

[0026] Figure 11 It is a schematic diagram of the internal structure of the second embodiment of an automatic switch-off mechanism of the present invention.

[0027] Figure 12 It is a schematic diagram of the front part of the housing of the second embodiment of an automatic switch-off mechanism of the present invention.

[0028] Figure 13 It is a schematic diagram of the structure of the third embodiment of an automatic switch-off mechanism of the present invention.

[0029] Figure 14 It is a schematic diagram of the internal structure of the third embodiment of an automatic switch-off mechanism of the present invention.

[0030] Figure 15 It is a schematic diagram of the front part of the housing of the third embodiment of an automatic switch-off mechanism of the present invention.

[0031] Figure 16 It is a schematic diagram of the structure of the fourth embodiment of an automatic switch-off mechanism of the present invention.

[0032] Figure 17 It is a schematic diagram of the front part of the housing of the fourth embodiment of an automatic switch-off mechanism of the present invention.

[0033] Figure 18 It is a schematic diagram of the structure of the fifth embodiment of an automatic switch-off mechanism of the present invention.

[0034] Figure 19 It is a schematic diagram of the front part of the housing of the fifth embodiment of an automatic switch-off mechanism of the present invention.

[0035] Figure 20 It is a schematic diagram of the structure of the sixth embodiment of an automatic switch-off mechanism of the present invention.

[0036] Figure 21 It is a schematic diagram of the front part of the housing of the sixth embodiment of an automatic switch-off mechanism of the present invention.

[0037] Figure 22It is a schematic structural diagram of the seventh embodiment of an automatic switch disconnection mechanism of the present invention.

[0038] Figure 23 It is a schematic diagram of the front part of the housing of the seventh embodiment of an automatic switch disconnection mechanism of the present invention.

[0039] As shown in the figure: 1. Housing, 1.1. Hole 1, 1.2. Hole 2, 2. Mechanism main shaft, 3. Axle pin, 4. Rotating shaft sleeve, 4.1. Sector hole, 5. Torsion spring, 6. Locking mechanism, 6.1. Locking rod, 6.2. Locking block, 6.3. Trigger rod, 6.4. Trigger plate, 6.5. Short shaft, 6.6. Stop plate, 6.7. Horizontal plate, 6.8. Support shaft, 6.9. Cross plate, 6.10. Trigger circular plate, 7. Locking mechanism return spring, 8. Trigger mechanism, 8.1. Flux converter, 8.2. Reset button, 8.3. Electromagnet, 8.4 or motor, 8.5. Trigger cam, 9. Guide pin, 10. Microswitch trigger rod, 11. Microswitch, 12. Wiring PCB board, 13. Locking rod bracket, 14. Flux pressing plate, 15. Trigger shaft, 16. Push rod, 17. Push rod seat, 18. Push rod return spring, 19. Short shaft 2, 20. Reset button spring, 21. Protective cover assembly, 21.1. Threaded sleeve, 21.2. Protective cap, 21.3. Compression nut, 21.4. Connecting piece, 22. Tension spring. Specific implementation mode

[0040] Embodiment 1, in combination with Figures 1-9

[0041] An automatic switch disconnection mechanism includes a housing 1 and a mechanism main shaft 2 that penetrates the housing 1 and is integrally provided with a switch knob. A hole 1.1 that cooperates with the mechanism main shaft 2 is provided on the front end face of the housing 1, and a hole 1.2 that cooperates with the mechanism main shaft 2 is provided on the rear end face. Inside the housing 1, there are an axle pin 3, a rotating shaft sleeve 4, a spring, a locking mechanism 6, a locking mechanism return spring 7, and a trigger mechanism 8. The axle pin 3 is fixedly connected to the mechanism main shaft 2. The rotating shaft sleeve 4 is sleeved on the mechanism main shaft 2 and a guide pin 9 is provided on one side of its outer ring. A sector hole 4.1 that cooperates with the axle pin 3 is provided on the rotating shaft sleeve 4 to achieve one-way linkage with the mechanism main shaft 2. The spring is sleeved on the mechanism main shaft 2 between the rotating shaft sleeve 4 and the housing 1, with one end fixedly connected to the housing 1 and the other end fixedly connected to the rotating shaft sleeve 4. The locking mechanism 6 includes a locking component, a trigger component, and a rotating component. The locking mechanism 6 is correspondingly arranged with the guide pin 9 through the locking component to lock the rotating shaft sleeve 4, is correspondingly arranged with the trigger mechanism 8 through the trigger component to trigger the locking mechanism 6, and rotates the locking mechanism 6 through the rotating component to unlock the rotating shaft sleeve 4. Among them, the end of the trigger component is connected to the housing 1 through the locking mechanism return spring 7; the trigger mechanism 8 includes a flux converter, an electromagnet or a motor;

[0042] When the switch knob is turned from the OFF position to the ON position, the switch knob drives the main shaft 2 of the mechanism to rotate, causing the rotating shaft sleeve 4 to be locked by the locking component of the locking mechanism 6 through the guide pin 9. At this time, the spring changes from the free state to the energy storage state, and the linkage between the rotating shaft sleeve 4 and the main shaft 2 of the mechanism is released. When the trigger mechanism 8 fires the trigger component of the locking mechanism 6, the trigger component drives the rotating component to rotate, causing the locking component to release the locking of the rotating shaft sleeve 4, and then the main shaft 2 of the mechanism drives the switch knob to turn from the ON position to the OFF position under the action of the spring;

[0043] The rotating shaft sleeve 4 is provided with a groove, and a microswitch trigger rod 10 is sleeved on the rotating shaft sleeve 4. One or more microswitches 11 corresponding to the outside of the rotating shaft sleeve 4 are arranged (schematic diagrams of multiple microswitches are as Figure 8 shown). When the rotating shaft sleeve 4 is locked by the locking mechanism 6, the rotating shaft sleeve 4 and the microswitch trigger rod 10 cause the microswitch 11 to switch signals or states; A wiring PCB board 12 is also provided in the housing 1;

[0044] The angle of the fan-shaped hole 4.1 on the rotating shaft sleeve 4 is not less than 90°. The guide pin 9 has an inverted wedge structure, and the surface in contact with the trigger component for locking is a plane, and the other surface is a streamlined arc surface;

[0045] In this embodiment, the rotating component of the locking mechanism 6 is a locking rod 6.1, the locking component is a locking block 6.2, and the trigger component is a trigger rod 6.3. Both ends of the locking rod 6.1 are connected to the housing 1 through the locking rod bracket 13. One end is connected to the locking block 6.2, and the other end extends out of the locking rod bracket 13 and is connected to the trigger rod 6.3. The trigger rod 6.3 is arranged corresponding to the trigger mechanism 8. When the trigger mechanism 8 fires the trigger rod 6.3, the locking rod 6.1 rotates around its central axis to drive the locking block 6.2 to rotate, thereby releasing the locking of the rotating shaft sleeve 4.

[0046] In this embodiment, the trigger mechanism 8 is a flux converter 8.1. The flux converter 8.1 is arranged at the lower part of the trigger rod 6.3 and is connected to the housing 1 through a flux pressing plate 14. A reset button 8.2 is correspondingly arranged on it. The reset button 8.2 is directly connected to the flux converter 8.1, and the other end extends out of the front end face of the housing 1. A protective cover assembly 21 corresponding to the extended end of the reset button 8.2 is arranged on the front end face of the housing 1. The protective cover assembly 21 includes a threaded sleeve 21.1 sleeved on the reset button 8.2, a protective cap 21.2 and a compression nut 21.3 arranged in cooperation with the threaded sleeve 21.1. The protective cap 21.2 and the housing 1 are connected through a connecting member 21.4.

[0047] In addition, a trigger shaft 15 is provided at one end of the reset button 8.2, and the trigger shaft 15 is arranged at the lower part of the trigger rod 6.3. The end of the trigger rod 6.3 away from the lock rod 6.1 is connected to the housing 1 through the locking mechanism reset spring 7.

[0048] The unlocking lever arm of the trigger assembly is more than twice the locking lever arm of the lock assembly. The unlocking surface of the trigger assembly and the rotation center of the lock assembly are staggered, and faster movement is achieved by increasing the rotation radius of the unlocking surface.

[0049] The spring is a torsion spring 5 or a tension spring 22 or a combination spring used together with the torsion spring 5 and the tension spring 22 (the diagram of the tension spring is shown in FIG. Figure 9 shown).

[0050] Example 2, combined with Figures 10-12

[0051] The difference between this embodiment and the first embodiment is that:

[0052] In this embodiment, the trigger mechanism 8 is an electromagnet 8.3, which is arranged above or below the trigger assembly, i.e., the trigger rod 6.3, and is connected to the housing 1. The locking mechanism reset spring 7 is arranged on one side of the electromagnet 8.3 or is sleeved on the electromagnet 8.3. The trigger rod 6.3 is also provided with a trigger plate 6.4 extending to the upper part of the electromagnet 8.3.

[0053] Implementation three, combined Figures 13-15

[0054] The difference between this embodiment and the first embodiment is that:

[0055] In this embodiment, the trigger mechanism 8 is a motor 8.4, the upper part of which is connected to a trigger cam 8.5, and the lower part of the trigger assembly is provided with a push rod 16. The push rod 16 is connected to the housing 1 through a push rod seat 17, and moves up and down along the push rod seat 17 under the action of the trigger cam 8.5. A push rod return spring 18 is also provided between the outside of the push rod 16 and the push rod seat 17.

[0056] Example 4, combined with Figures 16-17

[0057] The difference between this embodiment and the first embodiment is that:

[0058] In this embodiment, the rotating component of the locking mechanism 6 is a short shaft 6.5, the locking component is a stop plate 6.6, and the trigger component is a horizontal plate 6.7. The short shaft 6.5 is connected to the shell 1. When the trigger mechanism 8 triggers the horizontal plate 6.7, the horizontal plate 6.7 drives the stop plate 6.6 to rotate around the short shaft 6.5, thereby releasing the lock on the rotating shaft sleeve 4, wherein an angle is set between the stop plate 6.6 and the horizontal plate 6.7.

[0059] In this embodiment, the triggering mechanism 8 is a flux transducer 8.1. The flux transducer 8.1 is disposed below the horizontal plate 6.7 and is fixedly connected to the housing 1. The locking mechanism return spring 7 is disposed on one side of the flux transducer 8.1 below the horizontal plate 6.7. One end of the locking mechanism return spring 7 is fixedly connected to the housing 1, and the other end is fixedly connected to the end of the horizontal plate 6.7 away from the stop plate 6.6. The reset button 8.2 is disposed above the horizontal plate 6.7 and is slidably connected to the short shaft two 19 fixedly connected to the housing 1. The reset button spring 20 is sleeved on the short shaft two 19.

[0060] Embodiment Five, in combination with Figures 18-19

[0061] The difference between this embodiment and Embodiment Four is that:

[0062] In this embodiment, the triggering mechanism 8 is an electromagnet 8.3. The triggering mechanism 8 is disposed above or below the horizontal plate 6.7 and is connected to the housing 1. The locking mechanism return spring 7 is disposed below the horizontal plate 6.7. One end of the locking mechanism return spring 7 is fixedly connected to the housing 1, and the other end is fixedly connected to the end of the horizontal plate 6.7 away from the stop plate 6.6.

[0063] Embodiment Six, in combination with Figures 20-21

[0064] The difference between this embodiment and Embodiment One is that:

[0065] In this embodiment, the rotating component of the locking mechanism 6 is a support shaft 6.8, the locking component is a horizontal plate 6.9, and the triggering component is a triggering circular plate 6.10. The support shaft 6.8 is connected to the housing 1. The horizontal plate 6.9 is rotatably connected to the support shaft 6.8 and one end of the horizontal plate 6.9 is connected to the triggering circular plate 6.10. When the triggering mechanism 8 fires the triggering circular plate 6.10, the triggering circular plate 6.10 drives the horizontal plate 6.9 to rotate around the support shaft 6.8, thereby unlocking the rotating shaft sleeve 4.

[0066] In this embodiment, the triggering mechanism 8 is a flux transducer 8.1. The flux transducer 8.1 is disposed between the circular plate 6.10 and the housing 1 and is fixedly connected to the housing 1. The locking mechanism return spring 7 is sleeved on the flux transducer 8.1. The reset button 8.2 is disposed above the circular plate 6.10 and is slidably connected to the short shaft two 19 fixedly connected to the housing 1. The reset button spring 20 is sleeved on the short shaft two 19.

[0067] Embodiment Seven, in combination with Figures 22-23

[0068] The difference between this embodiment and Embodiment Six is that:

[0069] In this embodiment, the triggering mechanism 8 is an electromagnet 8.3. The electromagnet 8.3 is arranged between the triggering circular plate 6.10 and the housing 1. The electromagnet 8.3 is fixedly connected to the housing 1. The locking mechanism return spring 7 is sleeved on the electromagnet 8.3, with one end fixedly connected to the housing 1 and the other end fixedly connected to the circular plate 6.10.

[0070] When the present invention is specifically implemented: when the knob of the switch is first turned from the OFF position to the ON position for the first time, the mechanism main shaft controls the spring through the shaft sleeve, causing the spring to change from the relaxed state to the working state, so as to complete the energy storage of the spring while the switch is first switched on. When the rotation ends, the rotating shaft sleeve linked to the mechanism main shaft is fixedly locked by the locking mechanism to prevent it from rotating and releasing energy under the huge torsion of the spring.

[0071] After the energy storage of the spring is completed, the rotating shaft sleeve is caught by the locking mechanism and fixed at the energy storage position. At this time, the switch main shaft can still rotate inside the shaft sleeve, that is, the switch can be manually turned on and off freely. When an overload or short circuit occurs in the inverter, etc., the control center can send a signal to the flux converter or electromagnet or motor of the DC switch. After the flux converter or electromagnet is powered on, it instantaneously generates a triggering action to impact the locking mechanism, causing it to move or rotate away from the rotating shaft sleeve and finally disengage from the shaft sleeve. Without the restriction of the locking mechanism, the shaft sleeve rotates counterclockwise under the drive of the spring elastic force. The torque of the spring energy storage is greater than the operating torque of the switch main shaft, so it can drive the knob of the switch to rotate from the ON position to the OFF position, completing the disconnection operation of the DC switch. After the disconnection operation is completed, the shaft sleeve locks the mechanism main shaft at the disconnection position.

[0072] When power supply needs to be restored again after troubleshooting, the knob of the switch should be forcefully turned from the OFF position to the ON position. This process is a process of re-powering for the switch and a process of energy storage for the automatic disconnection mechanism. It can remind the operator that when the knob needs to be forcefully rotated, there must be some kind of fault.

[0073] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the purpose of the present invention creation, they shall fall within the protection scope of the present invention.

Claims

1. A switch automatic disconnect mechanism, characterized in that: The invention comprises a shell, a mechanism main shaft which passes through the shell and is integrated with the switch knob, the front end surface of the shell is provided with a hole 1 which cooperates with the mechanism main shaft, the rear end surface is provided with a hole 2 which cooperates with the mechanism main shaft, the interior of the shell is provided with an axle pin, a rotating shaft sleeve, a spring, a locking mechanism, a locking mechanism reset spring, and a trigger mechanism, the axle pin is fixedly connected to the mechanism main shaft, the rotating shaft sleeve is sleeved on the mechanism main shaft and a guide pin is provided on one side of its outer ring, the rotating shaft sleeve is provided with a fan-shaped hole which cooperates with the axle pin to realize a one-way linkage with the mechanism main shaft, the spring is sleeved on the rotating shaft sleeve On the main shaft of the mechanism between the movable sleeve and the housing, one end of the main shaft is fixedly connected to the housing, and the other end is fixedly connected to the rotating sleeve. The locking mechanism includes a lock assembly, a trigger assembly, and a rotating assembly. The locking mechanism is configured to lock the rotating sleeve through the lock assembly and the guide pin, and is configured to trigger the locking mechanism through the trigger assembly and the trigger mechanism. The locking mechanism is driven to rotate by the rotating assembly to unlock the rotating sleeve, wherein the end of the trigger assembly is connected to the housing through a lock mechanism reset spring; the trigger mechanism includes a magnetic flux converter, an electromagnet, or a motor; The rotating sleeve is provided with a groove and a micro switch trigger rod is sleeved on the rotating sleeve. One or more micro switches corresponding to it are provided on the outside of the sleeve. When the rotating sleeve is locked by the locking mechanism, the rotating sleeve and the micro switch trigger rod prompt the micro switch to switch the signal or switch the state; a wiring PCB board is also provided in the shell.

2. The automatic disconnect mechanism of a switch according to claim 1, characterized in that: The angle of the fan-shaped hole on the rotating sleeve is not less than 90°, and the guide pin is an inverted wedge-shaped structure, with one side that contacts and locks with the trigger component being a flat surface and the other side being a streamlined arc surface.

3. The automatic disconnect mechanism of a switch according to claim 1, characterized in that: The rotating component of the locking mechanism is a locking rod, the locking component is a locking block, and the trigger component is a trigger rod. Both ends of the locking rod are connected to the shell through a locking rod bracket, one end of which is connected to the locking block, and the other end extends out of the locking rod bracket and is connected to the trigger rod. When the trigger mechanism fires the trigger assembly, the rotating component drives the locking component to rotate around its central axis, thereby releasing the lock on the rotating shaft sleeve.

4. The automatic disconnect mechanism of a switch according to claim 3, characterized in that: The unlocking lever arm of the trigger assembly is more than twice the locking lever arm of the lock assembly, and the unlocking surface of the trigger assembly and the rotation center of the lock assembly are staggered.

5. The automatic disconnect mechanism of a switch according to claim 1, characterized in that: The rotating component of the locking mechanism is a short shaft, the locking component is a stop plate, and the trigger component is a horizontal plate. The short shaft is connected to the shell, and the stop plate and the horizontal plate are integrally arranged and hinged on the short shaft. When the trigger mechanism fires the trigger component, the trigger component drives the locking component to rotate around the rotating component to release the lock on the rotating sleeve.

6. The automatic disconnect mechanism of a switch according to claim 1, characterized in that: The rotating component of the locking mechanism is a support shaft, the locking component is a horizontal plate, and the trigger component is a trigger circular plate. The support shaft is connected to the shell, the horizontal plate is rotatably connected to the short shaft and one end is connected to the trigger circular plate. When the trigger mechanism fires the trigger component, the trigger component drives the locking component to rotate around the rotating component to release the lock on the rotating sleeve.

7. The automatic disconnect mechanism for a switch according to any one of claims 3 to 6, characterized in that: When the trigger mechanism is a magnetic flux converter, the trigger mechanism is arranged at the lower part of the trigger assembly and connected to the shell, and a reset button is correspondingly provided on it or on one side. One end of the reset button is connected to the magnetic flux converter through a reset button spring or directly, and the other end extends out of the front end surface of the shell. A protective cover assembly corresponding to the protruding end of the reset button is provided on the front end surface of the shell. The protective cover assembly includes a threaded sleeve mounted on the outside of the reset button and a protective cap and a clamping nut cooperated with the threaded sleeve. The protective cap and the shell are connected by a connecting piece.

8. The automatic disconnect mechanism for a switch according to any one of claims 3 to 6, characterized in that: When the trigger mechanism is an electromagnet, the trigger mechanism is arranged above or below the trigger component and connected to the housing, and the locking mechanism reset spring is arranged on one side of the electromagnet or sleeved on the electromagnet or on one side of the trigger component.

9. The automatic disconnect mechanism for a switch according to any one of claims 3 to 6, characterized in that: When the trigger mechanism is a motor, a trigger cam is connected to the upper part of the motor, and a push rod is provided at the lower part of the trigger assembly. The push rod is connected to the shell through a push rod seat and moves up and down along the push rod seat under the action of the trigger cam. A push rod return spring is also provided between the outside of the push rod and the push rod seat.

10. The automatic disconnect mechanism of a switch according to claim 1, characterized in that: The spring is a torsion spring or a tension spring or a combination spring of a torsion spring and a tension spring sleeved inside the rotating shaft sleeve.

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