High-voltage interlocking connector

Abstract

The invention belongs to the technical field of automobile parts, and particularly relates to a high-voltage interlocking connector which comprises a mounting base, a connecting base is fixed to one end of the mounting base, a limiting block is fixed to the top end of the connecting base, a butt joint base can be arranged outside the connecting base in a sleeving mode, and a pressing plate is rotationally connected to the top end of the interior of the butt joint base. A first spring is arranged below the pressing plate, the bottom end of the first spring is fixedly connected with the butt joint seat, an insertion frame is connected below the pressing plate in a clamped mode, an expansion ring is arranged at the end, close to the mounting seat, of the outer side of the connecting seat, and an expansion plate is arranged on the side, close to the connecting seat, of the top end in the butt joint seat. When the butt joint base and the connecting base are connected in an inserted mode, the interiors of the expansion ring and the expansion plate are inflated, the gap between the butt joint base and the connecting base can be filled, the waterproof performance of the gap can be greatly improved at the moment, water flow can be prevented from passing through the gap when the vehicle wades into water, and metal elements in the butt joint base and the connecting base can be prevented from being rusted due to water inflow.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile accessories, in particular to a high-voltage interlocking connector. Background Art

[0002] With the continuous advancement of science and technology, the number of new energy vehicles is increasing. Electric vehicles are one of the new energy vehicles. As the name suggests, electric vehicles are powered by electricity. When the automotive cables are connected to motors, batteries and other components, high-voltage interlock connectors are used for connection. The high-voltage interlock connector can check the connection status of the high-voltage connector and automatically cut off the high-voltage power supply when the high-voltage connector is disconnected or abnormal.

[0003] A Chinese patent with the existing announcement number CN206712134U discloses a high-voltage interlocking connector, including a plug, a socket and a crank. The crank is locked by the second clamping structure and the second pair of structures in sequence along the first direction, making the connection of the connector more stable and reliable.

[0004] During use, the above technical solution installs the plug and the socket together by snapping together, and conducts electricity through the plug and the socket. However, during use, the car may occasionally wade through water, and the gap between the plug and the socket is prone to water ingress. The water ingress may cause a short circuit in the connection circuit, resulting in damage to the connector.

[0005] To this end, the present invention provides a high-voltage interlocking connector. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a high-voltage interlocking connector described in the present invention includes a mounting seat, a connecting seat is fixed at one end of the mounting seat, a limiting block is fixed at the top of the connecting seat, a docking seat adapted to it is provided on the outside of the connecting seat, the docking seat can be sleeved on the connecting seat, and guide grooves are provided on the side and bottom of the docking seat, and sliding bars are provided at the corresponding positions of the connecting seat and the guide grooves of the docking seat, the guide grooves and the sliding bars can be slidably connected, and a pressing plate is rotatably connected to the top of the docking seat, and a limiting pressure ring is fixed to one end of the pressing plate close to the connecting seat, a first spring is provided below the pressing plate, and the bottom of the first spring is fixedly connected to the docking seat, and a plug-in bracket is snap-connected to the bottom of the pressing plate, an expansion ring is provided on the end of the outer side of the connecting seat close to the mounting seat, and an expansion plate is provided on the side of the top of the docking seat close to the connecting seat.

[0008] Preferably, a lifting groove is provided on one side of the limit block close to the mounting seat, an air bag is provided at the bottom end of the lifting groove, air guide tubes are fixed on both sides of the air bag, the other end of the air guide tubes is connected to the expansion ring, and a pressure block is slidably connected to the upper part of the lifting groove, and the limiting pressure ring can press the pressure block into the lifting groove.

[0009] Preferably, second springs are fixed on both sides of the interior of the airbag.

[0010] Preferably, a guide shell is provided in the middle of the limiting pressure ring, the top end of the guide shell is fixedly connected to the docking seat, the interior of the guide shell is slidably connected to a lifting block, an air conveying belt is fixed on the side of the guide shell close to the expansion plate, the other end of the air conveying belt is fixedly connected to the expansion plate, and the expansion plate is connected to the interior of the guide shell through the air conveying belt.

[0011] Preferably, a third spring is provided inside the guide shell, the bottom end of the third spring is fixedly connected to the lifting block, and the top end of the third spring is fixedly connected to the docking seat.

[0012] Preferably, a flap is fixed to one side of the expansion plate close to the connecting seat, a rotating shaft is fixed to the top of the flap, and the rotating shaft is rotatably connected to one side of the docking seat close to the connecting seat.

[0013] Preferably, a coil spring is fixed to the outer side of both ends of the rotating shaft, and the other end of the coil spring is fixedly connected to the docking seat. Gears are fixed to both end portions of the rotating shaft, and the top end of the gear is meshed with a tooth plate, which is slidably connected to the inside of the docking seat, and the end of the tooth plate close to the connecting seat extends from the inside to the outside of the docking seat.

[0014] Preferably, a storage cavity is provided inside the docking seat, a telescopic hole is provided at the top of the storage cavity, a lifting column is inserted into the interior of the first spring, a top block is fixed to the top of the lifting column, the bottom end of the lifting column is inserted into the telescopic hole, a feeding channel is provided at the bottom end of the storage cavity, an overflow groove is provided inside the docking seat, a plurality of material distribution channels are provided at one end of the feeding channel away from the storage cavity, and the ends of the plurality of material distribution channels away from the feeding channel are all connected to the interior of the overflow groove.

[0015] Preferably, an air inlet hole is provided inside the lifting column, and a one-way valve is provided at the bottom end of the lifting column.

[0016] Preferably, a feeding hole is provided on a side of the storage cavity away from the connecting seat, and a sealing plug is provided inside the feeding hole.

[0017] The beneficial effects of the present invention are as follows: 1. The high-voltage interlocking connector described in the present invention can fill the gap between the docking seat and the connecting seat by inflating the interior of the expansion ring and the expansion plate when the docking seat and the connecting seat are plugged in. At this time, the waterproof performance of the gap will be greatly enhanced. When the vehicle wades through water, the gap can be prevented from flowing through, which can prevent the metal components inside the docking seat and the connecting seat from being corroded by water.

[0018] 2. The high-voltage interlocking connector described in the present invention automatically injects lubricating oil into the overflow groove during the plugging process of the docking seat and the connecting seat, so that the end of the connecting seat and the internal gap of the docking seat can be filled with lubricating oil, which can further improve the sealing performance. At the same time, the lubricating oil can reduce the resistance during the plugging and separation of the docking seat and the connecting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a diagram of the unplugged state of the present invention; Figure 2 It is a plug-in state diagram of the present invention; Figure 3 It is a schematic diagram of the connecting seat structure in the present invention; Figure 4 It is a schematic diagram of the partial cross-sectional structure of the connecting seat in the present invention; Figure 5 It is a schematic diagram of the expansion ring structure of the present invention; Figure 6 It is a schematic diagram of the internal structure of the airbag in the present invention; Figure 7 It is a schematic diagram of the docking seat structure in the present invention; Figure 8 This is a schematic diagram of the cross-sectional structure of the docking seat in the present invention; Figure 9 yes Figure 8 A partial enlarged view of the middle part; Figure 10 It is a schematic diagram of the internal structure of the lifting column in the present invention; Figure 11 It is a schematic diagram of the flap structure in the present invention; Figure 12 yes Figure 11 A partial enlarged view of point B in the middle; Figure 13 It is a schematic diagram of the cross-sectional structure of the guide shell in the present invention.

[0021] In the figure: 1. Mounting seat; 11. Connecting seat; 111. Limiting block; 2. Docking seat; 21. Pressing plate; 211. Limiting pressure ring; 22. Plug rack; 23. Lifting column; 231. Top block; 232. Air inlet; 233. One-way valve plate; 234. First spring; 24. Storage chamber; 241. Telescopic hole; 242. Feed hole; 243. Feed channel; 244. Distribution channel; 245. Overflow groove; 3. Expansion ring; 31. Pressing block; 32. Air bag; 321. Air guide tube; 322. Second spring; 4. Flap; 41. Expansion plate; 411. Air conveying belt; 42. Rotating shaft; 421. Coil spring; 422. Gear; 423. Tooth plate; 43. Guide shell; 431. Third spring; 432. Lifting block. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figures 1 to 11 As shown, a high-voltage interlocking connector described in an embodiment of the present invention includes a mounting seat 1, one end of the mounting seat 1 is fixed with a connecting seat 11, the top end of the connecting seat 11 is fixed with a limiting block 111, and the outside of the connecting seat 11 is provided with a docking seat 2 adapted thereto, and the docking seat 2 can be sleeved on the connecting seat 11, and the side and bottom of the docking seat 2 are provided with guide grooves, and the connecting seat 11 and the guide grooves of the docking seat 2 are provided with sliding strips, and the guide grooves and the sliding strips can be slidably connected. The top end of the docking seat 2 is rotatably connected to the pressing plate 21, and the pressing plate 21 is fixed with a limiting pressure ring 211 at one end close to the connecting seat 11, and a first spring 234 is provided below the pressing plate 21, and the bottom end of the first spring 234 is fixedly connected to the docking seat 2, and a plug-in bracket 22 is snap-connected to the bottom of the pressing plate 21, and an expansion ring 3 is provided at one end of the outer side of the connecting seat 1 close to the mounting seat 1, and an expansion plate 41 is provided on the side of the top end of the docking seat 2 close to the connecting seat 11; There are many circuits inside the new energy vehicle, and a high-voltage interlocking connector is used when connecting the high-voltage circuit. During use, the mounting base 1 is installed inside the car, and the circuit to be connected is connected to the components inside the mounting base 1. Then the input cable is installed at the tail of the docking base 2, and the cable is connected to the components inside the docking base 2. Then the docking base 2 is plugged into the outside of the connecting base 11. At this time, the guide grooves on the side and bottom of the docking base 2 are aligned with the slide bars at the corresponding positions of the connecting base 11. Then the docking base 2 is pushed toward the direction of the mounting base 1. At this time, the docking base 2 is inserted into the outside of the connecting base 11. At this time, the components inside the docking base 2 and the connecting base 11 can be docked. During the docking process, the internal detection module detects that the high-voltage electricity can be connected after the docking base 2 and the connecting base 11 are docked; When the locking cam 211 is in the closed position, the locking cam 211 is in the closed position, and the locking cam 211 is in the closed position, so that the locking cam 211 is in the closed position, and the locking cam 211 is in the closed position, so that the locking cam 211 is in the closed position, and the locking cam 211 is in the closed position, so that the locking cam 211 is in the closed position, and the locking cam 211 is in the closed position, so that the locking cam 211 is in the closed position, When the pressing plate 21 is pressed downward, the limiting pressure ring 211 is lifted up to separate the limiting pressure ring 211 from the limiting block 111 and the fixing block 111, and then the pressing plate 21 is pulled downward to separate the connecting seat 2 from the connecting seat 11. During use, there will be a gap between the connecting seat 11 and the docking seat 2. In order to prevent water from entering the gap during use, an expansion ring 3 is provided. The expansion ring 3 can fill the gap between the docking seat 2 and the connecting seat 11, and can prevent the outside of the docking seat 2 from being accidentally soaked in water during wading, causing water to short-circuit or rust internal components. The expansion plate 41 can fill the top gap between the docking seat 2 and the connecting seat 11, and can cooperate with the expansion ring 3 to perform waterproofing at the same time, thereby preventing water from entering the gap between the docking seat 2 and the connecting seat 11 when the car is wading.

[0024] like Figures 1 to 9 As shown, a lifting groove is provided on one side of the limiting block 111 close to the mounting base 1, an air bag 32 is provided at the bottom end of the lifting groove, air guide tubes 321 are fixed on both sides of the air bag 32, and the other end of the air guide tube 321 is connected to the expansion ring 3, a pressure block 31 is slidably connected to the upper part of the lifting groove, and the limiting pressure ring 211 can press the pressure block 31 into the lifting groove; After the docking seat 2 and the connecting seat 11 are docked, the limiting pressure ring 211 will move downward. At this time, the end of the limiting pressure ring 211 will squeeze the pressure block 31 into the interior of the lifting groove. At this time, the pressure block 31 will squeeze the airbag 32 into the interior of the lifting groove. After the airbag 32 is squeezed, the gas inside will be filled into the interior of the expansion ring 3 through the air guide tubes 321 on both sides. At this time, the expansion volume of the expansion ring 3 increases, and the expansion ring 3 will fill the gap between the docking seat 2 and the connecting seat 11. At this time, the sealing between the docking seat 2 and the connecting seat 11 can be enhanced.

[0025] like Figures 1 to 9 As shown, second springs 322 are fixed on both sides of the interior of the airbag 32; When it is necessary to separate the docking seat 2 and the connecting seat 11, the expansion ring 3 in the expanded state will affect the resistance when the docking seat 2 and the connecting seat 11 are separated. Therefore, a second spring 322 is set inside the airbag 32. When the pressure block 31 squeezes the airbag 32, the second spring 322 is squeezed. When it is necessary to separate the docking seat 2 and the connecting seat 11, the limiting pressure ring 211 will be lifted first. At this time, the elastic force of the second spring 322 will push the airbag 32 to restore its shape. At the same time, the airbag 32 will inhale air into the interior of the expansion ring 3 through the air guide tube 321. At this time, the expansion ring 3 will restore its shape. At this time, the expansion ring 3 will not affect the separation of the docking seat 2 and the connecting seat 11. The elastic force of the first spring 234 is greater than the elastic force of the second spring 322.

[0026] like Figures 1 to 13 As shown, a guide shell 43 is provided in the middle of the limiting pressure ring 211, the top of the guide shell 43 is fixedly connected to the docking seat 2, and a lifting block 432 is slidably connected to the inside of the guide shell 43. A gas conveying belt 411 is fixed to the side of the guide shell 43 close to the expansion plate 41, and the other end of the gas conveying belt 411 is fixedly connected to the expansion plate 41. The expansion plate 41 is connected to the inside of the guide shell 43 through the gas conveying belt 411; When the docking seat 2 is inserted into the outside of the connecting seat 11, the docking seat 2 drives the lifting block 432 to move. After the limiting pressure ring 211 contacts the limiting block 111 first, the bottom end of the lifting block 432 will also contact the surface of the limiting block 111. When the limiting pressure ring 211 is sleeved on the outside of the limiting block 111, the limiting block 111 pushes the lifting block 432 into the inside of the guide shell 43. The lifting block 432 squeezes the air inside the guide shell 43, and the air is introduced into the inside of the expansion plate 41 through the air conveying belt 411. At this time, the expansion plate 41 will expand after being filled with air. After the expansion plate 41 expands, its volume increases and can fill the gap between the docking seat 2 and the top of the connecting seat 11.

[0027] like Figures 1 to 13 As shown, a third spring 431 is provided inside the guide housing 43, the bottom end of the third spring 431 is fixedly connected to the lifting block 432, and the top end of the third spring 431 is fixedly connected to the docking seat 2; When the lifting block 432 is squeezed into the guide shell 43, the third spring 431 will be squeezed. When the docking seat 2 and the connecting seat 11 are separated, the third spring 431 will push the lifting block 432 to extend from the inside of the guide shell 43. At this time, negative pressure is generated inside the guide shell 43 and air is absorbed into the expansion plate 41 through the air conveying belt 411, so that the expansion plate 41 can restore its shape. At this time, the expansion plate 41 can be separated from the connecting seat 11.

[0028] like Figures 1 to 11 As shown, a flap 4 is fixed to one side of the expansion plate 41 close to the connecting seat 11, and a rotating shaft 42 is fixed to the top of the flap 4. The rotating shaft 42 is rotatably connected to the side of the docking seat 2 close to the connecting seat 11; When the docking seat 2 and the connecting seat 11 are plugged in and separated, the expansion plate 41 will block the structure at the top of the connecting seat 11. Therefore, a flap 4 is provided inside the docking seat 2 so that it can rotate. When the docking seat 2 and the connecting seat 11 are plugged in and separated, the flap 4 can drive the expansion plate 41 to rotate to an unobstructed position, thereby preventing the expansion plate 41 from blocking the structure at the top of the connecting seat 11.

[0029] like Figures 7 to 12 As shown, coil springs 421 are fixed to the outer sides of both ends of the rotating shaft 42, and the other ends of the coil springs 421 are fixedly connected to the docking seat 2. Gears 422 are fixed to both ends of the rotating shaft 42, and the top ends of the gears 422 are meshedly connected to tooth plates 423. The tooth plates 423 are slidably connected to the inside of the docking seat 2, and the end of the tooth plates 423 close to the connecting seat 11 extends from the inside of the docking seat 2 to the outside; In the initial state, the coil spring 421 drives the rotating shaft 42 to make the flap 4 in a horizontal state and stick to the top of the inside of the docking seat 2, and keep it fixed under the elastic support of the coil spring 421. When the docking seat 2 and the connecting seat 11 are about to be plugged in, the end of the tooth plate 423 will contact the surface of the mounting seat 1. When the docking seat 2 and the connecting seat 11 are plugged in, the tooth plate 423 will be pushed into the inside of the docking seat 2. At this time, the tooth plate 423 will drive the gear 422 to rotate 90 degrees. When the gear 422 rotates, it will drive the rotating shaft 42 to rotate 90 degrees. °, at this time the rotating shaft 42 drives the flap 4 to rotate 90°, at this time the flap 4 drives the expansion plate 41 to rotate into the working position, when the docking seat 2 and the connecting seat 11 are separated, the tooth plate 423 loses its support, and the coil spring 421 at this time will drive the rotating shaft 42 to rotate 90° in the opposite direction to reset, at this time the rotating shaft 42 drives the expansion plate 41 to reset through the flap 4, so that the expansion plate 41 can be automatically reset to prevent its position from affecting the plugging and separation of the docking seat 2 and the connecting seat 11, and at the same time the rotating shaft 42 can drive the tooth plate 423 to reset through the gear 422.

[0030] like Figures 1 to 10As shown, a storage cavity 24 is provided inside the docking seat 2, a telescopic hole 241 is provided at the top of the storage cavity 24, a lifting column 23 is inserted into the interior of the first spring 234, a top block 231 is fixed to the top of the lifting column 23, and the bottom end of the lifting column 23 is inserted into the telescopic hole 241, a feeding channel 243 is provided at the bottom end of the storage cavity 24, an overflow groove 245 is provided inside the docking seat 2, and a plurality of material distribution channels 244 are provided at one end of the feeding channel 243 away from the storage cavity 24, and the ends of the plurality of material distribution channels 244 away from the feeding channel 243 are all connected to the interior of the overflow groove 245; When the docking seat 2 and the connecting seat 11 are docked, the pressing plate 21 will rotate. During the rotation, the pressing plate 21 will squeeze the top block 231 downward, and the top block 231 will drive the lifting column 23 to extend into the interior of the telescopic hole 241. At this time, the gas inside the telescopic hole 241 enters the interior of the storage chamber 24. The interior of the storage chamber 24 is filled with lubricating oil with high viscosity. At this time, the lubricating oil enters the interior of the distribution channel 244 through the feeding channel 243. The distribution channel 244 transports the lubricating oil to multiple areas inside the overflow groove 245. Finally, the lubricating oil enters the overflow groove 245. Internally, when the docking seat 2 is plugged into the connecting seat 11, the end of the connecting seat 11 away from the mounting seat 1 will contact the overflow groove 245. At this time, the lubricating oil will contact the end of the connecting seat 11. Under the push of the connecting seat 11, the lubricating oil will overflow for a distance. At this time, the lubricating oil will fill the gap between the end of the connecting seat 11 and the inside of the docking seat 2. At this time, the sealing between the docking seat 2 and the connecting seat 11 can be further enhanced. At the same time, it plays a lubricating role when the docking seat 2 and the connecting seat 11 are separated, reducing the resistance during separation and preventing damage caused by excessive force during separation.

[0031] like Figures 1 to 10 As shown, an air inlet hole 232 is provided inside the lifting column 23, and a one-way valve plate 233 is provided at the bottom end of the lifting column 23; When the lifting column 23 extends into the telescopic hole 241, the one-way valve plate 233 will block the bottom end of the lifting column 23, and the gas inside the telescopic hole 241 can be pushed. When the pressing plate 21 is reset, the first spring 234 will push the top block 231. At this time, the top block 231 will drive the lifting column 23 to reset. At this time, the lifting column 23 will rise from the inside of the telescopic hole 241. During the rising process, negative pressure is generated inside the telescopic hole 241, which can drive the one-way valve plate 233 to flip downward. At the same time, the air inlet hole 232 intakes air into the interior of the telescopic hole 241, so that the interior of the telescopic hole 241 can be refilled with air, which is convenient for subsequent use.

[0032] like Figure 8 As shown, a feeding hole 242 is provided on the side of the storage cavity 24 away from the connecting seat 11, and a sealing plug is provided inside the feeding hole 242; After multiple plugging and separations, in order to prevent the lubricating oil from being consumed, it is necessary to add more. At this time, the sealing plug of the feed hole 242 is removed, and then the lubricating oil is injected into the storage chamber 24 through the feed hole 242. At this time, the storage chamber 24 can be replenished with lubricating oil, and then the sealing plug can be installed into the feed hole 242.

[0033] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A high voltage interlocking connector, characterized in that: The cam is fixed with a plurality of springs, and the cam is fixed with a plurality of springs at the top of the cam, and the cam is fixed with a plurality of springs at the bottom of the cam, and the cam is fixed with a plurality of springs at the bottom of the cam, and the cam is fixed with a plurality of springs at the top of the cam.

2. A high-voltage interlocking connector according to claim 1, characterized in that: A lifting groove is provided on the side of the limit block close to the mounting seat, and an air bag is provided at the bottom end of the lifting groove. Air guide tubes are fixed on both sides of the air bag, and the other end of the air guide tubes is connected to the expansion ring. A pressure block is slidably connected to the upper part of the lifting groove, and the limit pressure ring can press the pressure block into the lifting groove.

3. A high voltage interlock connector according to claim 2, characterized in that: Second springs are fixed on both sides of the interior of the airbag.

4. The high-voltage interlock connector according to claim 1, characterized in that: A guide shell is provided in the middle of the limiting pressure ring, the top of the guide shell is fixedly connected to the docking seat, the interior of the guide shell is slidably connected to a lifting block, an air conveying belt is fixed on the side of the guide shell close to the expansion plate, the other end of the air conveying belt is fixedly connected to the expansion plate, and the expansion plate is connected to the interior of the guide shell through the air conveying belt.

5. A high voltage interlock connector according to claim 4, characterized in that: A third spring is arranged inside the guide shell, the bottom end of the third spring is fixedly connected to the lifting block, and the top end of the third spring is fixedly connected to the docking seat.

6. The high-voltage interlocking connector according to claim 1, characterized in that: A flap is fixed on one side of the expansion plate close to the connecting seat, a rotating shaft is fixed on the top of the flap, and the rotating shaft is rotatably connected to one side of the docking seat close to the connecting seat.

7. A high voltage interlock connector according to claim 6, characterized in that: A coil spring is fixed to the outer side of both ends of the rotating shaft, and the other end of the coil spring is fixedly connected to the docking seat. Gears are fixed to both end portions of the rotating shaft, and the top end of the gear is meshed with a tooth plate, which is slidably connected to the inside of the docking seat, and the end of the tooth plate close to the connecting seat extends from the inside to the outside of the docking seat.

8. The high-voltage interlock connector according to claim 1, characterized in that: A storage cavity is provided inside the docking seat, a telescopic hole is provided at the top of the storage cavity, a lifting column is inserted into the interior of the first spring, a top block is fixed to the top of the lifting column, the bottom end of the lifting column is inserted into the telescopic hole, a feeding channel is provided at the bottom end of the storage cavity, an overflow groove is provided inside the docking seat, a plurality of distribution channels are provided at one end of the feeding channel away from the storage cavity, and the ends of the plurality of distribution channels away from the feeding channel are all connected to the interior of the overflow groove.

9. The high-voltage interlock connector according to claim 8, characterized in that: An air inlet hole is provided inside the lifting column, and a one-way valve is provided at the bottom end of the lifting column.

10. The high-voltage interlock connector according to claim 8, characterized in that: A feeding hole is provided on one side of the storage cavity away from the connecting seat, and a sealing plug is provided inside the feeding hole.

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