A fool-proof power supply switch

Abstract

The present invention discloses a fool-proof power switch, which relates to the field of electrical technology, and includes a switch box, a switch cover is installed at the front of the switch box, and a main power switch, a power sub-switch 1, a power sub-switch 2, a power sub-switch 3 and a power sub-switch 4 are installed inside the switch box, and a limiting structure is provided on one side of the main power switch, the power sub-switch 1, the power sub-switch 2 and the power sub-switch 3, and the power sub-switch 4 is also provided with a limiting structure that is symmetrical with the main power switch, and the limiting structure includes a hollow clamping cylinder, and the front parts of the main power switch, the power sub-switch 1, the power sub-switch 2, the power sub-switch 3 and the power sub-switch 4 are all rotatably connected with a lever, and the hollow clamping cylinder is installed at one end of the main power switch near the lever. By setting a limiting structure, the present invention can ensure that the power switch will not be opened by other personnel when a problem occurs in the circuit and needs to be repaired.

Description

Technical Field

[0001] The invention relates to the field of electrical technology, and in particular to a fool-proof power supply switch. Background Art

[0002] The power switch is a key component in the field of electrical technology. In the entire power system, the power switch plays an important role in controlling the on and off of electric energy. Starting from the power generation link, large-scale generator sets require reliable switching equipment to control the output of electricity. During the power transmission process, the high-voltage switchgear in the substation ensures the safe transmission and distribution of electricity. In the power distribution link, various types of power switches are directly facing the end users, determining whether the electric energy can be accurately and safely transmitted to each electrical equipment.

[0003] The existing power switch can only open and close the circuit, and it cannot selectively self-lock. Therefore, when the power is repaired and the power switch is turned off, other non-maintenance personnel may operate the switch at will without understanding the circuit status, causing equipment damage, electric shock and other dangerous situations. The circuit is not only inspected at the power switch. Therefore, when non-maintenance personnel mistakenly operate the power switch, it cannot be stopped in time, thus causing safety accidents. Summary of the invention

[0004] The main purpose of the present invention is to provide a fool-proof power switch, which can effectively solve the technical problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A foolproof power switch comprises a switch box, a switch cover is installed at the front of the switch box, a main power switch, a first power sub-switch, a second power sub-switch, a third power sub-switch and a fourth power sub-switch are installed inside the switch box, and a limiting structure is arranged on one side of the main power switch, the first power sub-switch, the second power sub-switch and the third power sub-switch, and the fourth power sub-switch is also provided with a limiting structure which is symmetrical with the main power switch;

[0007] The limiting structure includes a hollow clamping cylinder. The front parts of the main power supply switch, power supply sub-switch 1, power supply sub-switch 2, power supply sub-switch 3 and power supply sub-switch 4 are rotatably connected with a lever. The hollow clamping cylinder is installed at one end of the main power supply switch close to the lever. A pair of clamping blocks are symmetrically fixedly installed on the outer surface of the hollow clamping cylinder close to the front and rear ends. A pair of L-shaped grooves are opened on the outer surface of the hollow clamping cylinder inside the main power supply switch, and a pair of L-shaped grooves are also opened inside the lever through one end. A placement groove is opened inside the lever, and a spring 1 is placed between the hollow clamping cylinder and the placement groove.

[0008] As a further solution of the present invention, the L-shaped groove consists of a straight part and an arc part, the clamping block is adaptively matched with the L-shaped groove, and the arc angle of the arc part of the L-shaped groove is fifteen degrees.

[0009] As a further solution of the present invention, the front of the switch cover is rotatably connected with a movable cover, and a pair of blocks at one end of the hollow clamping cylinder and a pair of blocks at the other end of the hollow clamping cylinder are axially symmetrically distributed along the center of the hollow clamping cylinder.

[0010] As a further solution of the present invention, a connecting rod is connected to the interior of four hollow clamping tubes that pass through the main power supply switch, power supply sub-switch one, power supply sub-switch two and power supply sub-switch three at one time, and transmission grooves are provided on the outer surfaces of the connecting rods near the top and bottom and respectively located on one side of the main power supply switch, power supply sub-switch one, power supply sub-switch two and power supply sub-switch three. A pair of through grooves are provided in the interior of the four hollow clamping tubes located at the positions of the main power supply switch, power supply sub-switch one, power supply sub-switch two and power supply sub-switch three, and a transmission rod is slidably connected to the interior of each through groove, and a spring three is connected between the transmission rod and the through groove.

[0011] As a further solution of the present invention, one side of the transmission groove is arranged in an inclined surface, and the transmission rod is adaptively matched with the transmission groove.

[0012] As a further solution of the present invention, the angle difference between each pair of adjacent transmission grooves is twenty degrees, and spring two is placed inside spring one between one end of the connecting rod and the placement groove inside power supply switch three.

[0013] As a further solution of the present invention, a docking groove is provided at the other end of the connecting rod, and an extension block is fixedly installed at one end of the hollow clamping cylinder located at the power supply sub-switch four, and a docking groove is also provided on the side of the extension block. A screw is provided on one side of the main power supply switch, and a docking block is fixedly connected to one end of the screw, and the docking block is adaptively matched with the docking groove.

[0014] As a further solution of the present invention, the top of the movable cover is fixedly connected with an ear seat, the front part of the switch cover is provided with a fixing groove near the bottom, the ear seat is adaptively matched with the fixing groove, the front part of the switch cover is provided with a threaded groove behind the fixing groove, and one side of the ear seat is provided with a threaded groove running through the other side, and the screw is adaptively matched with the threaded groove.

[0015] As a further solution of the present invention, the side of the main power supply switch is rotatably connected to a rotating ring at the other end of the connecting rod, a docking groove 2 is provided inside the rotating ring, two docking grooves 3 are provided on the outer surface of the connecting rod near the other end, and an L-shaped pointing rod is fixedly connected to the outer surface of the rotating ring.

[0016] As a further solution of the present invention, four indicator blocks are fixedly connected to one side of the front of the main power switch, and the angles between the four indicator blocks and the center of the hollow clamping cylinder correspond to the angles of the four pairs of through slots.

[0017] The beneficial effects of the present invention are as follows:

[0018] By setting a limit structure, when the circuit needs to be repaired and the power switch needs to be turned off, the two pairs of card blocks are accurately located inside the main power switch and inside the lever, respectively. Combined with the strong elastic force released by the spring after being compressed, the lever can be firmly fixed. In this way, the lever cannot rotate independently. When the circuit has a problem and needs to be repaired, it can effectively ensure that the power switch will not be accidentally turned on by other personnel, which greatly improves the safety of the circuit maintenance process, effectively avoids safety accidents caused by misoperation, and creates a more stable and reliable working environment for maintenance personnel.

[0019] By arranging the connecting rod to cooperate with the transmission groove and the transmission rod, when the circuits controlled by the first, second and third power supply sub-switches are inspected and repaired, the connecting rod can be rotated and pushed to make the transmission groove cooperate with the transmission rod, drive the hollow clamping tube to rotate to realize the locking of the lever, and after the connecting rod is released, the second spring rebounds to reset the connecting rod. At the same time, the inclined surface of the transmission groove ensures that the transmission rod re-enters the through groove, so that each power supply switch can be locked by mechanical energy independently, which ensures the safety of the sub-switches during maintenance and prevents misoperation.

[0020] By providing a docking block, a docking groove 1 and a screw rod, the docking block is aligned with the docking groove 1 and inserted together, the connecting rod can be driven to operate through the screw rod, thereby driving the limit structure to function, and since the docking block and the docking groove 1 are plug-in-connected, the screw rod can be directly taken out when the limit structure is in operation. This design makes it impossible for idle personnel to control the limit structure with appropriate tools, thereby ensuring that idle personnel will not arbitrarily control the power switch, thereby further preventing the occurrence of such safety accidents. This design greatly improves the safety and reliability of the power switch, and provides a strong guarantee for people's production and life;

[0021] In the daily use of the power switch, the switch cover and the movable cover are connected and fixed to each other by screws, so that the movable cover is firmly fixed. This design can effectively prevent children from opening the movable cover to operate the power switch, reducing the risk of safety accidents caused by children accidentally touching the power switch, providing important protection for the safety of electricity use in homes and public places, so that people can use power equipment more safely;

[0022] When the connecting rod rotates, it will drive the rotating ring to rotate together, and then through the different indicator blocks pointed by the L-shaped pointing rod, it can be accurately known which transmission slot and which transmission rod are in the same straight line. This design provides great convenience for operators, allowing them to understand the status of the equipment more clearly during operation and operate accurately, thereby improving the accuracy and efficiency of operation. At the same time, it also helps to reduce equipment failures and safety accidents caused by improper operation, and provides strong support for the stable operation of the power switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a fool-proof power switch of the present invention;

[0024] Figure 2 This is a dissecting diagram of the limit structure of a fool-proof power switch of the present invention;

[0025] Figure 3 This is a dissection diagram of a lever of a fool-proof power switch of the present invention;

[0026] Figure 4 This is a structural diagram showing the other end of a connecting rod of a fool-proof power switch of the present invention;

[0027] Figure 5 This is a dissecting diagram of a lever installed at three positions of a power supply sub-switch of a fool-proof power switch of the present invention;

[0028] Figure 6 A foolproof power switch of the present invention Figure 5 A magnified view of part A;

[0029] Figure 7 This is a dissection diagram of a hollow clamping tube of a fool-proof power switch of the present invention;

[0030] Figure 8 A vertical dissection diagram of a connecting rod of a fool-proof power switch of the present invention;

[0031] Fig. 9 This is a comparison diagram of the position relationship of four pairs of transmission rods of a fool-proof power switch of the present invention;

[0032] Fig.10 This is a screw disassembly display diagram of a fool-proof power switch of the present invention;

[0033] Fig.11 This is a diagram showing a connecting rod and a rotating ring of a fool-proof power switch of the present invention.

[0034] In the figure: 1. switch box; 2. switch cover; 3. movable cover; 4. main power supply switch; 5. power supply sub-switch 1; 6. power supply sub-switch 2; 7. power supply sub-switch 3; 8. power supply sub-switch 4; 9. ear seat; 10. fixing groove; 11. limiting structure; 12. hollow clamping tube; 13. L-shaped groove; 14. clamping block; 15. placement groove; 16. spring 1; 17. lever; 18. connecting rod; 19. transmission groove; 20. spring 2; 21. through groove; 22. transmission rod; 23. spring 3; 24. docking groove 1; 25. screw; 26. docking block; 27. rotating ring; 28. docking groove 2; 29. ​​L-shaped pointing rod; 30. docking groove 3; 31. indication block. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] like Figure 1 - Fig.11 As shown, a fool-proof power switch comprises a switch box 1, a switch cover 2 is installed at the front of the switch box 1, a main power switch 4, a power sub-switch 1 5, a power sub-switch 2 6, a power sub-switch 3 7 and a power sub-switch 4 8 are installed inside the switch box 1, and a limiting structure 11 is arranged on one side of the main power switch 4, the power sub-switch 1 5, the power sub-switch 2 6 and the power sub-switch 3 7, and the power sub-switch 4 8 is also provided with a limiting structure 11 which is symmetrical with the main power switch 4;

[0037] The limiting structure 11 comprises a hollow clamping cylinder 12, the front parts of the main power switch 4, the power sub-switch 1 5, the power sub-switch 2 6, the power sub-switch 3 7 and the power sub-switch 4 8 are all rotatably connected with a lever (17), the hollow clamping cylinder 12 is installed at one end of the main power switch 4 near the lever 17, a pair of clamping blocks 14 are symmetrically fixedly installed on the outer surface of the hollow clamping cylinder 12 near the front and rear ends, a pair of L-shaped grooves 13 are opened on the outer surface of the hollow clamping cylinder 12 inside the main power switch 4, and a pair of L-shaped grooves 13 are also opened inside the lever 17 through one end, a placement groove 15 is opened inside the lever 17, and a spring 16 is placed between the hollow clamping cylinder 12 and the placement groove 15;

[0038] Slide along one end of the hollow clamping tube 12, so that the two pairs of clamping blocks 14 slide along the straight parts of the two pairs of L-shaped grooves 13 respectively, and the spring 16 is compressed. Then, the hollow clamping tube 12 is rotated clockwise by fifteen degrees, so that the clamping blocks 14 are located in the arc part of the L-shaped groove 13. At this time, the two pairs of clamping blocks 14 are respectively located inside the main power switch 4 and inside the lever 17. Combined with the elastic force of the spring 16, the lever 17 can be fixed and cannot rotate independently.

[0039] In this embodiment, the L-shaped groove 13 is composed of a straight line portion and an arc portion, the clamping block 14 is adaptively matched with the L-shaped groove 13, and the arc angle of the arc portion of the L-shaped groove 13 is fifteen degrees.

[0040] In this embodiment, the front of the switch cover 2 is rotatably connected to the movable cover 3, and a pair of clamping blocks 14 at one end of the hollow clamping cylinder 12 and a pair of clamping blocks 14 at the other end of the hollow clamping cylinder 12 are axially symmetrically distributed along the center of the hollow clamping cylinder 12.

[0041] In this embodiment, a connecting rod 18 is connected to the inside of four hollow clamping tubes 12 that penetrate through the main power switch 4, the power sub-switch 1 5, the power sub-switch 2 6 and the power sub-switch 3 7 at one time, and a transmission groove 19 is provided on the outer surface of the connecting rod 18 near the top and the bottom and respectively located on one side of the main power switch 4, the power sub-switch 1 5, the power sub-switch 2 6 and the power sub-switch 3 7. A pair of through grooves 21 are provided inside the four hollow clamping tubes 12 located at the positions of the main power switch 4, the power sub-switch 1 5, the power sub-switch 2 6 and the power sub-switch 3 7, and a transmission rod 22 is slidably connected inside each through groove 21, and a spring 3 23 is connected between the transmission rod 22 and the through groove 21;

[0042] Since the limiting structures 11 of the power supply sub-switch 1 5, the power supply sub-switch 2 6 and the power supply sub-switch 3 7 are blocked, they cannot operate normally, so that the lever 17 cannot be locked when the circuit controlled by the power supply switch is inspected. At this time, the connecting rod 18 is first rotated so that the transmission groove 19 is opposite to the transmission rod 22. For example, when the power supply sub-switch 1 5 needs to be locked, the connecting rod 18 is first rotated 20 degrees clockwise, and then the connecting rod 18 is pushed so that the two transmission grooves 19 on one side of the power supply sub-switch 1 5 are moved to the position of the two transmission rods 22. At this time, the two springs 3 23 rebound and drive the two transmission rods 22 to enter the inside of the two transmission grooves 19 respectively. Therefore, when the connecting rod 18 is rotated at this time, the hollow clamping tube 12 can be driven to rotate together through the two transmission rods 22. When the connecting rod 18 is released, the spring 2 20 rebounds and drives the connecting rod 18 to reset. Since one side of the transmission groove 19 is arranged in an inclined surface, when the connecting rod 18 is reset, it will press against the transmission rod 22 to re-enter the inside of the through groove 21.

[0043] In this embodiment, one side of the transmission groove 19 is arranged in an inclined surface, and the transmission rod 22 is adaptively matched with the transmission groove 19 .

[0044] In this embodiment, the angle difference between each pair of adjacent transmission grooves 19 is twenty degrees, and a spring 20 is placed inside the spring 16 between one end of the connecting rod 18 and the placement groove 15 located inside the power supply sub-switch 3 7.

[0045] In this embodiment, a docking groove 24 is provided at the other end of the connecting rod 18, and an extension block is fixedly installed at one end of the hollow clamping tube 12 located at the power supply sub-switch 48, and a docking groove 24 is also provided on the side of the extension block. A screw rod 25 is provided on one side of the power supply main switch 4, and a docking block 26 is fixedly connected to one end of the screw rod 25, and the docking block 26 is adaptively matched with the docking groove 24;

[0046] By aligning the docking block 26 with the docking slot 24 and inserting it, the connecting rod 18 can be driven to operate through the screw rod 25, thereby driving the limiting structure 11 to operate. Moreover, since there is a plug-in relationship between the docking block 26 and the docking slot 24, when the limiting structure 11 is operating, the screw rod 25 can be directly taken out, so that strangers have no tools to control the limiting structure 11, thereby ensuring that strangers will not control the power switch, thereby further preventing the occurrence of such safety accidents.

[0047] In this embodiment, the top of the movable cover 3 is fixedly connected with an ear seat 9, the front part of the switch cover 2 is provided with a fixing groove 10 near the bottom, the ear seat 9 is adaptively matched with the fixing groove 10, the front part of the switch cover 2 is located at the rear of the fixing groove 10 and a thread groove is provided, and one side of the ear seat 9 is penetrated through the other side and a thread groove is also provided, and the screw 25 is adaptively matched with the thread groove;

[0048] When the power switch is used daily, the switch cover 2 and the movable cover 3 are connected and fixed to each other by the screw rod 25, so that the movable cover 3 is fixed to prevent children from opening the movable cover 3 and misoperating the power switch.

[0049] In this embodiment, the side of the main power switch 4 is located at the other end of the connecting rod 18 and is rotatably connected to a rotating ring 27. A docking groove 28 is provided inside the rotating ring 27. Two docking grooves 30 are provided on the outer surface of the connecting rod 18 near the other end. An L-shaped pointing rod 29 is fixedly connected to the outer surface of the rotating ring 27. When the connecting rod 18 rotates, the rotating ring 27 will be driven to rotate together. Then, through the different indicator blocks 31 pointed to by the L-shaped pointing rod 29, it can be known which transmission groove 19 and which transmission rod 22 are in the same straight line.

[0050] In this embodiment, four indicator blocks 31 are fixedly connected to one side of the front of the main power switch 4 , and the angles between the four indicator blocks 31 and the center of the hollow clamping cylinder 12 correspond to the angles of the four pairs of through slots 21 .

[0051] It should be noted that the present invention is a foolproof power switch. When in use, when installing the main power switch 4, the main power switch 4 is installed inside the switch box 1 along the direction in which the OFF on the surface of the lever 17 is facing upward. The installation directions of the power sub-switch 1 5, the power sub-switch 2 6, the power sub-switch 3 7 and the power sub-switch 4 8 are the same as above. As long as the OFF font is facing upward when installing the main power switch 4, the installation direction of the main power switch 4 can be ensured to be correct, and it will not be turned upside down during installation, resulting in installation errors, thereby achieving the purpose of foolproofing.

[0052] When the circuit is being repaired and the power switch is turned off, the user slides along one end of the hollow clamping tube 12, so that the two pairs of clamping blocks 14 slide along the straight parts of the two pairs of L-shaped grooves 13 respectively, and the spring 16 is compressed. Then the hollow clamping tube 12 is rotated 15 degrees clockwise, so that the clamping blocks 14 are located in the arc part of the L-shaped groove 13. At this time, the two pairs of clamping blocks 14 are located inside the main power switch 4 and inside the lever 17 respectively. With the elastic force of the spring 16, the lever 17 can be fixed and cannot rotate autonomously. When the circuit has a problem and needs to be repaired, it can be ensured that the power switch will not be turned on by other personnel.

[0053] Since the limiting structures 11 of the power supply sub-switch 1 5, the power supply sub-switch 2 6 and the power supply sub-switch 3 7 are blocked, they cannot operate normally, so that when the circuit controlled by the power supply switch is inspected, the lever 17 cannot be locked. At this time, the connecting rod 18 is first rotated so that the transmission groove 19 is opposite to the transmission rod 22. For example, when the power supply sub-switch 1 5 needs to be locked, the connecting rod 18 is first rotated 20 degrees clockwise, and then the connecting rod 18 is pushed so that the two transmission grooves 19 on one side of the power supply sub-switch 1 5 are moved to the position of the two transmission rods 22. At this time, the two springs 3 23 rebound and drive the two transmission rods 22 to enter the inside of the two transmission grooves 19 respectively. Therefore, when the connecting rod 18 is rotated at this time, the hollow clamping tube 12 can be driven to rotate together through the two transmission rods 22. When the connecting rod 18 is released, the spring 2 20 rebounds and drives the connecting rod 18 to reset. Since one side of the transmission groove 19 is arranged in an inclined surface, when the connecting rod 18 is reset, it will press against the transmission rod 22 to re-enter the inside of the through groove 21;

[0054] By aligning the docking block 26 with the docking slot 1 24 and inserting it, the connecting rod 18 can be driven to operate through the screw rod 25, thereby driving the limiting structure 11 to operate. Since the docking block 26 and the docking slot 1 24 are plug-in-connected, the screw rod 25 can be directly removed when the limiting structure 11 is in operation, so that the idle personnel have no tools to control the limiting structure 11, thereby ensuring that the idle personnel will not control the power switch, thereby further preventing the occurrence of such safety accidents.

[0055] When the power switch is used daily, the switch cover 2 and the movable cover 3 are connected and fixed to each other by the screw 25, so as to fix the movable cover 3, so as to prevent children from opening the movable cover 3 to operate the power switch;

[0056] When the connecting rod 18 rotates, the rotating ring 27 is driven to rotate together, and then the L-shaped pointing rod 29 points to different indicating blocks 31, so that it can be known which transmission slot 19 and which transmission rod 22 are located in the same straight line.

[0057] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A foolproof power switch, comprising a switch box (1), a switch cover (2) being installed at the front of the switch box (1), characterized in that: A main power switch (4), a first power sub-switch (5), a second power sub-switch (6), a third power sub-switch (7) and a fourth power sub-switch (8) are installed inside the switch box (1), and a limiting structure (11) is provided on one side of the main power switch (4), the first power sub-switch (5), the second power sub-switch (6) and the third power sub-switch (7), and the fourth power sub-switch (8) is also provided with a limiting structure (11) that is symmetrical with the main power switch (4); The limiting structure (11) comprises a hollow clamping tube (12), the front parts of the main power switch (4), the first power sub-switch (5), the second power sub-switch (6), the third power sub-switch (7) and the fourth power sub-switch (8) are all rotatably connected to a lever (17), the hollow clamping tube (12) is installed inside the main power switch (4) at one end close to the lever (17), a pair of clamping blocks (14) are symmetrically fixedly installed on the outer surface of the hollow clamping tube (12) close to the front and rear ends, a pair of L-shaped grooves (13) are opened inside the main power switch (4) and located on the outer surface of the hollow clamping tube (12), and a pair of L-shaped grooves (13) are also opened inside the lever (17) through one end, a placement groove (15) is opened inside the lever (17), and a spring (16) is placed between the hollow clamping tube (12) and the placement groove (15); A connecting rod (18) is connected to the interior of the four hollow clamping tubes (12) passing through the main power switch (4), the first power switch (5), the second power switch (6) and the third power switch (7); a transmission groove (19) is provided on the outer surface of the connecting rod (18) near the top and the bottom and respectively located on one side of the main power switch (4), the first power switch (5), the second power switch (6) and the third power switch (7); a pair of through grooves (21) is provided inside the four hollow clamping tubes (12) located at the positions of the main power switch (4), the first power switch (5), the second power switch (6) and the third power switch (7); a transmission rod (22) is slidably connected inside each through groove (21); a spring (23) is connected between the transmission rod (22) and the through groove (21); One side of the transmission groove (19) is arranged in an inclined surface, and the transmission rod (22) is adaptively matched with the transmission groove (19); The angle difference between each pair of adjacent transmission grooves (19) is 20 degrees, and a spring 2 (20) is placed inside the spring 1 (16) between one end of the connecting rod (18) and the placement groove (15) located inside the power supply sub-switch 3 (7); The other end of the connecting rod (18) is provided with a docking groove (24), and an extension block is fixedly installed on one end of the hollow clamping tube (12) located at the power supply sub-switch (8), and a docking groove (24) is also provided on the side of the extension block. A screw rod (25) is provided on one side of the power supply main switch (4), and a docking block (26) is fixedly connected to one end of the screw rod (25), and the docking block (26) is adaptively matched with the docking groove (24).

2. The fool-proof power switch according to claim 1, characterized in that: The L-shaped groove (13) consists of a straight line portion and an arc portion, the clamping block (14) is adaptively matched with the L-shaped groove (13), and the arc angle of the arc portion of the L-shaped groove (13) is fifteen degrees.

3. The fool-proof power switch according to claim 1, characterized in that: The front part of the switch cover (2) is rotatably connected to a movable cover (3), and a pair of clamping blocks (14) at one end of the hollow clamping cylinder (12) and a pair of clamping blocks (14) at the other end of the hollow clamping cylinder (12) are axially symmetrically distributed along the center of the hollow clamping cylinder (12).

4. The fool-proof power switch according to claim 3, characterized in that: The top of the movable cover (3) is fixedly connected with an ear seat (9), the front part of the switch cover (2) is provided with a fixing groove (10) near the bottom, the ear seat (9) and the fixing groove (10) are adaptively matched, the front part of the switch cover (2) is provided with a thread groove at the rear of the fixing groove (10), and one side of the ear seat (9) is provided with a thread groove penetrating through the other side, and the screw rod (25) is adaptively matched with the thread groove.

5. The fool-proof power switch according to claim 1, characterized in that: The side surface of the main power switch (4) is rotatably connected to a rotating ring (27) at the other end of the connecting rod (18), and a second docking groove (28) is provided inside the rotating ring (27). Two third docking grooves (30) are provided on the outer surface of the connecting rod (18) near the other end, and an L-shaped pointing rod (29) is fixedly connected to the outer surface of the rotating ring (27).

6. The fool-proof power switch according to claim 1, characterized in that: Four indicator blocks (31) are fixedly connected to one side of the front portion of the main power supply switch (4), and the angles between the four indicator blocks (31) and the center of the hollow clamping cylinder (12) correspond to the angles of the four pairs of through slots (21) respectively.

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