Intelligent low voltage switch

Abstract

The application relates to the technical field of electrical equipment, and discloses an intelligent low-voltage switch which comprises a shell, an electrode arranged in the shell, a control assembly arranged in the shell, and a limiting assembly, the electrode is connected with contacts which can be coupled and decoupled with each other, the control assembly comprises a handle rotatably arranged on the shell, a rotating shaft rotatably arranged in the shell, a rotating gear fixed on the rotating shaft, and a connecting rod, the connecting rod is conductive, one end of the handle close to the rotating gear is provided with a trigger rod, the trigger rod extends into the teeth of the rotating gear, the contacts comprise a moving contact and a stationary contact, and the limiting assembly is used for limiting the connecting rod at a position where the moving contact and the stationary contact are in contact or disconnected. The application realizes the connection and disconnection of the moving contact and the stationary contact through the rotation of the connecting rod, the limiting assembly can fix the position of the connecting rod, the breaking thoroughness of the moving contact and the stationary contact is guaranteed, and the safety during use of the low-voltage switch is improved.

Description

Technical Field

[0001] This application relates to the technical field of electrical equipment, and in particular to an intelligent low-voltage switch. Background Technology

[0002] Low-voltage switches are electrical devices used to connect or disconnect AC or DC circuits. They are widely used in power distribution, control and protection systems and mainly include circuit breakers, disconnect switches, fuses and other types.

[0003] In related technologies, low-voltage switches generally include a housing, one or more electrodes disposed in the housing, and a control component. Each electrode is associated with at least one pair of contacts that can be coupled and decoupled from each other. The control component is capable of driving the contacts to move relative to each other, thereby achieving coupling (circuit closure) and decoupling (circuit opening) of the contacts.

[0004] However, when the contacts of the aforementioned low-voltage switch are disconnected, if the contacts are blocked by debris, or if the contacts are aged or loose, the power disconnection may not be complete, resulting in a strong electric arc at the contacts, which could lead to low-voltage switch failure or even serious safety accidents. Therefore, improvements are needed. Summary of the Invention

[0005] To improve the safety of low-voltage switches, this application provides an intelligent low-voltage switch.

[0006] The intelligent low-voltage switch provided in this application adopts the following technical solution:

[0007] An intelligent low-voltage switch includes a housing, one or more electrodes disposed within the housing, and a control component disposed within the housing. The electrodes are connected to at least one pair of contacts that can be coupled and decoupled from each other. The control component includes a handle rotatably disposed on the housing, a rotating shaft rotatably disposed within the housing, a rotating gear fixed on the rotating shaft, and a connecting rod. The connecting rod is conductive. The handle has a trigger rod at one end near the rotating gear and an end extending out of the housing away from the rotating gear. The trigger rod extends between the teeth of the rotating gear. The contacts include a moving contact and a stationary contact disposed on both sides of the connecting rod. The switch also includes a limiting component disposed within the housing, which limits the connecting rod to a position where it contacts or disconnects from the moving and stationary contacts.

[0008] By adopting the above technical solution, when the handle is turned, the trigger rod drives the rotating gear to rotate, thereby rotating the connecting rod to a position where it contacts or disconnects from the moving or stationary contact. Then, the position of the connecting rod is fixed by the limiting component, thus achieving stable connection or complete de-energization. By replacing the traditional direct contact separation with a rotary conductive connecting rod, even if the contacts age or are obstructed by foreign objects, the connecting rod can still be separated from one of the moving or stationary contacts by directly turning the handle. The forced separation action of the connecting rod still ensures physical isolation between the moving and stationary contacts, reducing the risk of arcing due to incomplete de-energization and improving safety when using low-voltage switches. The limiting component precisely fixes the connecting rod in the on or off position, reducing accidental contact caused by vibration and ensuring the reliability of the circuit.

[0009] Optionally, the limiting assembly includes a limiting disk disposed on the rotating shaft, a plurality of limiting blocks disposed inside the housing, and a plurality of connecting springs connecting the limiting blocks and the inner wall of the housing. The limiting disk is provided with a plurality of fixing grooves for the limiting blocks to extend into. The connecting springs have a tendency to drive the limiting blocks to extend into the fixing grooves. The limiting blocks are provided with guide slopes on the side wall near the limiting disk.

[0010] By adopting the above technical solution, when the handle is turned to open or close the circuit breaker, the limit plate rotates along with the rotating shaft. This causes the wall of the fixed groove to abut against the guide slope on the limit block, and the two slide relative to each other. This causes the limit block, originally located in the fixed groove, to move out of the fixed groove. Then, with the rotation of the limit plate, the limit block moves into another fixed groove under the action of the connecting spring, thus fixing the position of the connecting rod and ensuring the stability of the connection or disconnection between the connecting rod and the moving and stationary contacts. The mechanical interlock between the limit block and the fixed groove provides clear position feedback, ensuring the connecting rod remains stably at the preset angle. The guide slope guides the limit block to slide into the fixed groove, reducing the operating torque of the handle. The preload of the connecting spring absorbs vibrations of the mechanism, reducing the possibility of accidental dislocation of the limit block.

[0011] Optionally, the inner wall of the outer casing is provided with a plurality of guide posts, the guide posts are inserted into the connecting spring, and the limiting block is slidably disposed on the guide posts.

[0012] By adopting the above technical solution, when the limit plate rotates, the limit block slides on the guide post. The guide post constrains the linear movement of the limit block, reducing the risk of skewness and jamming during the movement of the limit block, thereby ensuring that the connecting rod can achieve normal rotation and opening / closing. The connecting spring is arranged coaxially with the guide post, so that the connecting spring can only deform along the guide post, reducing the possibility of torsional deformation of the connecting spring, extending the service life of the connecting spring, and thus extending the service life of the low-voltage switch.

[0013] Optionally, both the moving contact and the stationary contact are provided with permanent magnets on the side near the connecting rod.

[0014] By adopting the above technical solution, when the handle is turned to close the circuit breaker, the connecting rod rotates towards the moving and stationary contacts. During this rotation, the permanent magnet exerts an attractive force on the connecting rod, allowing it to rotate to the position of contact with the moving and stationary contacts more quickly, thus making the closing action faster. When the connecting rod reaches the position of contact with the moving and stationary contacts, the permanent magnet enhances the electrical contact pressure between the connecting rod and the moving and stationary contacts, reduces contact resistance, and decreases heat generation. This reduces heat-induced wear on the moving and stationary contacts, further extending the service life of the low-voltage switch.

[0015] Optionally, a return torsion spring is provided on the rotating shaft, the return torsion spring having a tendency to drive the connecting rod to rotate away from the moving contact and the stationary contact.

[0016] By adopting the above technical solution, the reset torsion spring provides a constant separation torque. When the handle is turned to open the circuit breaker, the reset torsion spring can drive the rotating axis to rotate in the direction of opening the circuit breaker, thereby providing additional driving force for the separation of the connecting rod from the moving contact and the stationary contact, accelerating the separation of the connecting rod from the moving contact and the stationary contact, thus making the opening action faster, reducing the possibility of generating a large electric arc, ensuring that the connecting rod can reliably disengage from the contact under any working condition, and thus ensuring complete power disconnection.

[0017] Optionally, a buffer plate and a buffer spring are provided on the side of the moving contact and the stationary contact away from the connecting rod. The buffer plate is set on the inner wall of the housing, and the buffer spring is set between the buffer plate and the moving contact and the stationary contact.

[0018] By adopting the above technical solution, at the moment when the connecting rod rotates to contact the moving contact and the stationary contact, the buffer spring can absorb the impact force when the contact is closed, reduce vibration, thereby reducing the metal impact sound and improving noise. In addition, it can also reduce the possibility of contact welding and reduce the possibility of the moving contact and the stationary contact loosening, thereby improving the reliability of the opening and closing operation.

[0019] Optionally, the outer casing includes a first casing and a second casing that can be detachably connected. The inner wall of the first casing is provided with a plurality of fixing plates. The fixing plates are provided with connecting screw holes. Fastening bolts are threaded into the connecting screw holes. A clamping plate is fitted on the fastening bolt. The clamping plate is located on the side of the fixing plate near the bolt head of the fastening bolt. The moving contact and the stationary contact both include a mounting part located between the fixing plate and the clamping plate and a connecting part for contacting the connecting rod.

[0020] By adopting the above technical solution, if the moving and stationary contacts become loose or damaged after long-term opening and closing, the first and second housings can be separated to expose the fastening bolts. Then, by tightening the fastening bolts, the moving and stationary contacts can be re-clamped between the fixed plate and the pressure plate. This facilitates maintenance of the moving and stationary contacts after long-term use, shortens maintenance downtime, and allows adjustment of the pressure plate stroke by tightening the fastening bolts to accommodate contacts with different wear levels, extending service life. Alternatively, the fastening bolts can be loosened by rotating them, and the damaged moving and stationary contacts can be removed from between the fixed and pressure plates. New moving and stationary contacts can then be installed between the fixed and pressure plates, and the fastening bolts tightened. Finally, the first and second housings can be reassembled for normal opening and closing. This design eliminates the need to replace the entire low-voltage switch when the moving and stationary contacts are damaged, extending the service life of the low-voltage switch.

[0021] Optionally, the inner wall of the housing is provided with two rotating rings for the two ends of the rotating shaft to rotate, and the reset torsion spring is sleeved on one end of the rotating shaft.

[0022] By adopting the above technical solution, when the reset torsion spring experiences elastic fatigue after long-term use, the first housing and the second housing can be separated first, so that the rotating shaft can be dislodged from the rotating ring. Then, the reset torsion spring can be directly removed from the rotating shaft, and a new reset torsion spring can be fitted onto the rotating shaft. Then, one end of the rotating shaft can be inserted into the rotating ring of the first housing first, and finally, the second housing can be installed on the first housing so that the other end of the rotating shaft can also be inserted into the rotating ring, which facilitates the replacement of the reset torsion spring.

[0023] Optionally, two mounting plates are disposed opposite each other on the inner wall of the housing, and a sliding rod is disposed between the two mounting plates. An elastic element is sleeved on the sliding rod, and a movable plate is slidably disposed on the sliding rod. The elastic element has a tendency to drive the movable plate to slide toward one of the mounting plates. The trigger rod is disposed on the side of the movable plate away from the elastic element, and the elastic element has a tendency to drive the trigger rod to rotate in the direction of opening the circuit breaker.

[0024] By adopting the above technical solution, when the handle is turned to close the circuit, the trigger rod will be subjected to the elastic force of the elastic element in the direction of opening, which makes it more difficult to close the circuit with greater force. This makes it less likely for the low-voltage switch to be accidentally closed when it is in the open state. This reduces the risk of electric shock due to misoperation when performing circuit maintenance in the open state, and further improves the safety performance of the low-voltage switch.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The stationary and moving contacts are connected or disconnected by a connecting rod. Even if the stationary and moving contacts become loose, the connecting rod can be forced to rotate by turning the handle, thereby achieving the connection and separation of the stationary and moving contacts, ensuring the thoroughness of power outage and improving the safety performance of low-voltage switches.

[0027] 2. The position of the connecting rod is fixed by the limit component, making the low-voltage switch more stable when it is open or closed;

[0028] 3. The reset torsion spring continuously provides assistance to the connecting rod in the direction away from the stationary and moving contacts, making the tripping action more rapid, further ensuring the thoroughness of power disconnection, and reducing the possibility of generating a strong electric arc. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0030] Figure 2 This is a schematic diagram of the structure used to display the control components after the second housing is hidden in the embodiment of this application.

[0031] Figure 3 This is a schematic diagram of the structure used to display the fixing plate after the second shell is hidden in the embodiment of this application.

[0032] Figure 4 This is a partial structural diagram of the limiting component after the first housing is hidden in an embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Outer shell; 11. Mounting plate; 12. Sliding rod; 13. Elastic element; 14. Movable plate; 15. Guide column; 16. Permanent magnet; 17. First shell; 171. Fixing plate; 173. Fastening bolt; 174. Pressure plate; 18. Second shell; 19. Rotating ring; 2. Control assembly; 21. Handle; 211. Trigger rod; 22. Rotating shaft; 221. Return torsion spring; 23. Rotating gear; 24. Connecting rod; 3. Limiting assembly; 31. Limiting disc; 311. Fixing groove; 32. Limiting block; 321. Guide slope; 33. Connecting spring; 4. Contact; 41. Moving contact; 411. Mounting part; 412. Connecting part; 42. Stationary contact; 43. Buffer plate; 44. Buffer spring. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0036] This application discloses an intelligent low-voltage switch.

[0037] Reference Figure 1and Figure 2 A smart low-voltage switch includes a housing 1, electrodes (not shown) disposed within the housing 1, and a control component 2 disposed within the housing 1. The housing 1 includes a first housing 17 and a second housing 18 that are detachably connected. One or more electrodes are provided, and each electrode is detachably connected to at least one pair of contacts 4 that can be coupled and decoupled from each other. The control component 2 cooperates with the contacts 4 on the electrodes to achieve precise control of the coupling and decoupling of the contacts 4.

[0038] Reference Figure 2 The control component 2 includes a handle 21 rotatably mounted on the housing 1, a rotating shaft 22 rotatably mounted inside the housing 1, a rotating gear 23 mounted on the rotating shaft 22, and a connecting rod 24 mounted on the rotating shaft 22. The handle 21 has a trigger rod 211 at one end near the rotating gear 23 and extends out of the housing 1 at the other end away from the rotating gear 23. The handle 21 is typically a rod-shaped structure for easy manual operation and can be made of materials such as plastic. The rotating shaft 22 is a key transmission component of the control component 2 and is generally made of metal to ensure its strength and durability. It is fixed relative to the rotating gear 23, and the rotation of the rotating gear 23 drives the rotating shaft 22 to rotate synchronously. Alternatively, the rotating shaft 22 and the rotating gear 23 can be manufactured as a single piece to enhance their connection stability.

[0039] Reference Figure 2 The rotating gear 23 has multiple teeth for engaging with the trigger rod 211 on the handle 21. The trigger rod 211 is typically a columnar structure, and its material can be the same as that of the handle 21. It extends into the teeth of the rotating gear 23. When the handle 21 is rotated, the trigger rod 211 pushes the rotating gear 23 to rotate, thereby driving the rotating shaft 22 to rotate. The connecting rod 24 is conductive and is generally made of a metal with good conductivity, such as copper. It is fixedly connected to the rotating shaft 22 and oscillates as the rotating shaft 22 rotates. In other conductive connection structures, components such as conductive plates can be used to replace the connecting rod 24.

[0040] Reference Figure 2 Contact 4 includes a moving contact 41 and a stationary contact 42, which are located on opposite sides of the connecting rod 24. When the connecting rod 24 rotates to contact the moving contact 41 and the stationary contact 42, the circuit is closed; when the connecting rod 24 rotates to separate from the moving contact 41 and the stationary contact 42, the circuit is open. The moving contact 41 and the stationary contact 42 are usually block-shaped structures with special surface treatment to improve conductivity and wear resistance. They are generally made of metals such as copper. In other electrical connections, sheet-shaped contact 4 structures may also be used.

[0041] Reference Figure 2A return torsion spring 221 is provided on the rotating shaft 22. The return torsion spring 221 has the tendency to drive the connecting rod 24 to rotate away from the moving contact 41 and the stationary contact 42. The return torsion spring 221 is generally made of spring steel. It stores elastic potential energy when the rotating shaft 22 rotates. When the external force disappears, the elastic potential energy is used to reset the rotating shaft 22 and the connecting rod 24. In other reset structures, tension springs or other springs can be used instead of torsion springs.

[0042] Reference Figure 2 and Figure 3 Two mounting plates 11 are disposed opposite each other on the inner wall of the first housing 17. Several sliding rods 12 are disposed between the two mounting plates 11. There are two sliding rods 12. The sliding rods 12 are generally rod-shaped structures made of plastic. The mounting plates 11 are used to fix the sliding rods 12. An elastic element 13 is sleeved on the sliding rod 12. A movable plate 14 is slidably disposed on the sliding rod 12. The elastic element 13 is usually a spring.

[0043] Reference Figure 3 The trigger rod 211 is located on the side of the movable plate 14 away from the elastic element 13, and the elastic element 13 has the tendency to drive the movable plate 14 to push the trigger rod 211 to rotate in the direction of opening the circuit breaker.

[0044] Reference Figure 4 It also includes a limiting component 3 disposed within the outer casing 1. The limiting component 3 includes a limiting disc 31 disposed on the rotating shaft 22, several limiting blocks 32 disposed within the outer casing 1, and several connecting springs 33 connected to the limiting blocks 32 and the inner wall of the first casing 17. The limiting disc 31 has several fixing grooves 311 for the limiting blocks 32 to extend into. The limiting disc 31 is generally a disc-shaped structure, fixedly connected to the rotating shaft 22, and rotates synchronously with the rotating shaft 22. Its material can be plastic.

[0045] Reference Figure 4 The limiting block 32 is typically a block-shaped structure made of metal. Its side wall near the limiting disc 31 has a guide slope 321, facilitating smooth sliding into or out of the fixing groove 311 when the limiting disc 31 rotates. The connecting spring 33 provides elastic force, tending to push the limiting block 32 into the fixing groove 311, ensuring a tight fit between the limiting block 32 and the limiting disc 31 and guaranteeing the limiting effect. The spring is generally made of stainless steel, but in other elastic connection structures, rubber elastomers can be used instead of springs.

[0046] Reference Figure 3 and Figure 4When the limiting block 32 extends into the fixing groove 311, it can limit the connecting rod 24 to a position where it contacts or disconnects from the moving contact 41 and the stationary contact 42. Several guide posts 15 are provided on the inner wall of the outer casing 1. The guide posts 15 pass through the connecting spring 33, and the limiting block 32 is slidably mounted on the guide posts 15. The guide posts 15 are generally cylindrical structures made of metal, and their function is to guide the sliding direction of the limiting block 32 and ensure the stability of the movement of the limiting block 32.

[0047] Reference Figure 3 Both the moving contact 41 and the stationary contact 42 are provided with permanent magnets 16 on the side near the connecting rod 24. The permanent magnets 16 are fixedly connected to the inner wall of the first housing 17. The permanent magnets 16 can be made of strong magnetic materials such as neodymium iron boron. Their function is to use magnetic force to attract the connecting rod 24 when it is close to the contact point 4, so that the contact is tighter and the conductivity is improved.

[0048] Referring to the figure, a buffer plate 43 and a buffer spring 44 are provided on the side of the moving contact 41 and the stationary contact 42 away from the connecting rod 24. The buffer plate 43 is disposed on the inner wall of the first housing 17. The buffer plate 43 is generally a plate structure and can be made of rubber or plastic, etc. The buffer spring 44 is disposed between the buffer plate 43 and the moving contact 41 and the stationary contact 42, and plays a role in buffering and shock absorption.

[0049] Reference Figure 3 The inner wall of the first housing 17 is provided with several fixing plates 171. The fixing plates 171 are generally plate-shaped structures made of plastic and are used to fix the contacts 4. The fixing plates 171 are provided with connecting screw holes (not shown in the figure). Fastening bolts 173 are threaded into the connecting screw holes. A clamping plate 174 is fitted on the fastening bolts 173. The clamping plate 174 is located on the side of the fixing plate 171 near the bolt head of the fastening bolt 173.

[0050] Reference Figure 3 and Figure 4 By tightening the fastening bolt 173, the clamping plate 174 can press the contact 4, ensuring the stability of the contact 4 installation. In other fixing structures, the contact 4 can also be fixed by means of clips or welding. Both the moving contact 41 and the stationary contact 42 include a mounting part 411 disposed between the fixing plate 171 and the clamping plate 174, and a connecting part 412 for contacting the connecting rod 24. The mounting part 411 is generally a plate-like structure, which is pressed between the fixing plate 171 and the clamping plate 174, while the connecting part 412 contacts the connecting rod 24 to achieve a conductive connection.

[0051] Reference Figure 4The inner wall of the outer casing 1 is provided with two rotating rings 19 for the two ends of the rotating shaft 22 to rotate. The rotating rings 19 are generally ring-shaped and made of plastic, serving to support and guide the rotation of the rotating shaft 22. In other rotation support structures, bearings or the like can be used instead of rotating rings 19. A return torsion spring 221 is sleeved on one end of the rotating shaft 22 to ensure the effectiveness of applying a return force to the rotating shaft 22, and at the same time facilitates the replacement of a new return torsion spring 221.

[0052] The implementation principle of an intelligent low-voltage switch according to this application embodiment is as follows: When the handle 21 is manually rotated, the trigger rod 211 drives the rotating gear 23 to rotate, thereby driving the rotating shaft 22 and the connecting rod 24 to rotate, so that the connecting rod 24 contacts or disconnects from the moving contact 41 and the stationary contact 42, realizing the connection and disconnection of the circuit. When the rotating shaft 22 rotates, it drives the limiting plate 31 to rotate. When the connecting rod 24 rotates to the connected or disconnected position, the limiting block 32 will be locked into the fixing groove 311, thereby fixing the position of the connecting rod 24 and maintaining the stability of the switch connection or disconnection. The moving contact 41 and the stationary contact 42 are connected and disconnected via the connecting rod 24. Even if the moving contact 41 or the stationary contact 42 becomes loose or damaged, the connecting rod 24 can be controlled to disconnect from the moving contact 41 or the stationary contact 42 by rotating the handle 21, thereby achieving the disconnection of the moving contact 41 and the stationary contact 42. This intelligent low-voltage switch effectively reduces the problem of arcing caused by incomplete de-energization of the contacts 4 in traditional low-voltage switches, and improves the safety and reliability of the power system.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An intelligent low-voltage switch, comprising a housing (1), one or more electrodes disposed within the housing (1), and a control component (2) disposed within the housing (1), wherein the electrodes are connected to at least one pair of contacts (4) that can be coupled and decoupled from each other, characterized in that: The control component (2) includes a handle (21) rotatably mounted on the housing (1), a rotating shaft (22) rotatably mounted inside the housing (1), a rotating gear (23) fixed on the rotating shaft (22), and a connecting rod (24). The connecting rod (24) is conductive. The handle (21) has a trigger rod (211) at one end near the rotating gear (23) and the other end extending out of the housing (1). The trigger rod (211) extends between the teeth of the rotating gear (23). The contact (4) includes a moving contact (41) and a stationary contact (42) respectively located on both sides of the connecting rod (24). It also includes a limiting component (3) located inside the housing (1). The limiting component (3) is used to limit the connecting rod (24) to a position where it contacts or disconnects from the moving contact (41) and the stationary contact (42). Two mounting plates (11) are arranged opposite each other on the inner wall of the outer casing (1). A sliding rod (12) is arranged between the two mounting plates (11). An elastic element (13) is sleeved on the sliding rod (12). A movable plate (14) is slidably arranged on the sliding rod (12). The elastic element (13) has a tendency to drive the movable plate (14) to slide towards one of the mounting plates (11). The trigger rod (211) is arranged on the side of the movable plate (14) away from the elastic element (13). The elastic element (13) has a tendency to drive the trigger rod (211) to rotate in the direction of opening the circuit breaker.

2. The intelligent low-voltage switch according to claim 1, characterized in that: The limiting assembly (3) includes a limiting disk (31) disposed on the rotating shaft (22), a plurality of limiting blocks (32) disposed inside the outer shell (1), and a plurality of connecting springs (33) connecting the limiting blocks (32) and the inner wall of the outer shell (1). The limiting disk (31) is provided with a plurality of fixing grooves (311) for the limiting blocks (32) to extend into. The connecting springs (33) have a tendency to drive the limiting blocks (32) to extend into the fixing grooves (311). The limiting blocks (32) are provided with guide slopes (321) on the side wall near the limiting disk (31).

3. The intelligent low-voltage switch according to claim 2, characterized in that: The inner wall of the outer shell (1) is provided with a plurality of guide posts (15), the guide posts (15) are inserted in the connecting spring (33), and the limiting block (32) is slidably disposed on the guide posts (15).

4. The intelligent low-voltage switch according to claim 2, characterized in that: Both the moving contact (41) and the stationary contact (42) are provided with permanent magnets (16) on the side near the connecting rod (24).

5. The intelligent low-voltage switch according to claim 1, characterized in that: The rotating shaft (22) is provided with a reset torsion spring (221), which has the tendency to drive the connecting rod (24) to rotate away from the moving contact (41) and the stationary contact (42).

6. The intelligent low-voltage switch according to claim 5, characterized in that: The moving contact (41) and the stationary contact (42) are each provided with a buffer plate (43) and a buffer spring (44) on the side away from the connecting rod (24). The buffer plate (43) is provided on the inner wall of the outer shell (1), and the buffer spring (44) is provided between the buffer plate (43) and the moving contact (41) and the stationary contact (42).

7. The intelligent low-voltage switch according to claim 6, characterized in that: The outer casing (1) includes a first casing (17) and a second casing (18) that can be detachably connected. A plurality of fixing plates (171) are provided on the inner wall of the first casing (17). The fixing plates (171) are provided with connecting screw holes. Fastening bolts (173) are threaded into the connecting screw holes. A clamping plate (174) is fitted on the fastening bolts (173). The clamping plate (174) is located on the side of the fixing plate (171) near the bolt head of the fastening bolt (173). The moving contact (41) and the stationary contact (42) both include a mounting part (411) provided between the fixing plate (171) and the clamping plate (174) and a connecting part (412) for contacting the connecting rod (24).

8. The intelligent low-voltage switch according to claim 7, characterized in that: The inner wall of the outer casing (1) is provided with two rotating rings (19) for rotating the two ends of the rotating shaft (22), and the reset torsion spring (221) is sleeved on one end of the rotating shaft (22).

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