A hand-pinching prevention device for car door

Abstract

The present invention discloses a car door anti-pinch device, comprising a car and a car door, wherein an opening is provided in the middle of the front side of the car, and the car door is arranged at the front side of the opening, and is characterized in that: an anti-pinch mechanism is provided on both sides of the opening, each group of the anti-pinch mechanism is respectively arranged between the car door and the front wall plate of the car, and the anti-pinch mechanism comprises a bracket, a plastic block and a plurality of micro switches, the bracket is movably installed on the front wall plate of the car, the bracket can move laterally along the moving direction of the car door, and the plastic block is installed on the front side of the bracket; the bracket is provided with a plurality of clamping components at intervals from top to bottom, and the clamping components push the bracket and the plastic block to move inward, so that the inner side of the plastic block is arranged flush with the side wall of the opening; the contact end on the left side of the micro switch contacts the outer side of the bracket. The present invention improves the safety of elevator use.

Description

Technical Field

[0001] The invention relates to an elevator, in particular to a hand-pinching prevention device for a car door. Background Art

[0002] In a car-type elevator, the car door on the car is a necessary structure for entering and exiting the car. In order to prevent the front wall of the car from scratching the car door panel during the opening process of the elevator car door, a gap is reserved between the car door panel and the front wall of the car. In order to prevent the gap from being too large and causing fingers to be caught in the gap during the opening process of the car door, the gap is generally not more than 6mm.

[0003] However, as the elevator ages, the gap between the car door and the front wall of the car may become larger. Infants and young children have relatively small fingers, and they are particularly curious about the opening and closing of the car door. This may cause infants and young children to place their fingers on the car door, and as the car door moves, they may get stuck in the gap between the car door and the front wall of the car, posing a certain safety hazard. In other words, if someone inserts a foreign object into the gap, the car door may get stuck, causing the car door to be unable to open and close normally, thus posing a safety hazard. Summary of the invention

[0004] The purpose of the present invention is to provide a car door anti-pinch hand device. By using this structure, the safety of the car door opening process during elevator operation can be improved and safety hazards can be reduced.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a car door anti-pinch device, comprising a car and a car door, an opening is provided in the middle of the front side of the car, the car door is arranged on the front side of the opening, an anti-pinch mechanism is respectively provided on both sides of the opening, each group of the anti-pinch mechanism is respectively arranged between the car door and the front wall plate of the car, the anti-pinch mechanism comprises a bracket, a plastic block and a plurality of groups of micro switches, the bracket is movably installed on the front wall plate of the car, the bracket can move laterally along the moving direction of the car door, the plastic block is installed on the front side of the bracket, and the rear side of the plastic block is arranged close to the rear side of the car door;

[0006] The bracket is provided with a plurality of sets of clamping components from top to bottom, and the clamping components push the bracket and the plastic block to move inward, so that the inner side of the plastic block is flush with the side wall of the opening;

[0007] A plurality of groups of micro switches are arranged at intervals on the right side of the bracket from top to bottom, and the contact end on the left side of the micro switch is in contact with the outer side surface of the bracket.

[0008] In the above technical solution, the front wall panels of the car on both sides of the opening respectively have L-shaped panels bent outward, and the L-shaped panels include a horizontal panel and a vertical panel connected to each other, the inner end of the horizontal panel is connected to the rear end side wall of the opening, and the rear end of the vertical panel is connected to the outer end of the horizontal panel, and the plastic block is arranged between the horizontal panel and the car door.

[0009] In the above technical solution, the bracket includes a connecting plate and a positioning plate, the outer end of the connecting plate is connected to the middle part of the positioning plate, the positioning plate is arranged on the outer side of the vertical plate, the connecting plate is arranged on the rear side of the horizontal plate, and the plastic block is installed on the rear side surface of the connecting plate; the horizontal plate is provided with a plurality of groups of transverse through grooves from top to bottom, and the transverse through grooves are arranged parallel to the moving direction of the car door, and at least one limiting bolt is inserted in each group of the transverse through grooves, the screw head of the limiting bolt is arranged on the front side of the horizontal plate, and the rear end of the limiting bolt passes through the connecting plate and is connected to the plastic block, the bracket is installed on the horizontal plate via the limiting bolt, and the bracket can move in the transverse through groove via the limiting bolt.

[0010] In the above technical solution, when the inner side surface of the positioning plate contacts the outer side surface of the vertical plate, the inner side surface of the plastic block is flush with the side wall of the opening.

[0011] In the above technical solution, the clamping assembly includes a connecting rod and a spring, the vertical plate is provided with a plurality of groups of transverse holes from top to bottom, the transverse holes are arranged parallel to the moving direction of the car door, and the corresponding positioning plate is provided with a plurality of groups of clearance holes, each group of the clearance holes is arranged opposite to one of the transverse holes;

[0012] The middle part of each group of connecting rods is inserted into a group of transverse holes and the clearance holes, the outer end of the connecting rod is screwed with an outer end limit head, the inner end of the connecting rod is screwed with an inner end limit head, the outer end limit head is arranged on the outer side of the positioning plate, the inner end limit head is arranged on the inner side of the vertical plate, the spring is sleeved on the outside of the connecting rod, the inner end of the spring is against the outer side surface of the inner end limit head, and the outer end of the spring is against the inner side surface of the vertical plate;

[0013] When the spring is in the extended state, the spring pushes the connecting rod, the inner limit head and the outer limit head to move inward, the inner side surface of the outer limit head abuts against the outer side surface of the positioning plate, and drives the bracket and the plastic block to move inward, so that the inner side surface of the positioning plate contacts the outer side surface of the vertical plate.

[0014] In the above technical solution, the contact end on the left side of the micro switch contacts the outer side of the positioning plate; when the spring is compressed, the bracket and the plastic block move inward, and the positioning plate compresses the contact end of the micro switch.

[0015] In the above technical solution, a lubrication device is also provided on the outer side of the bracket, and the lubrication device includes a plurality of lubrication components arranged at intervals from top to bottom. A mounting plate is installed on the outer side of the bracket, and a plurality of groups of lubrication components are installed on the front end of the mounting plate, and the front end surface of the lubrication component is in contact with the rear side surface of the car door.

[0016] In the above technical scheme, the lubrication assembly includes a U-shaped frame opening toward the front and an oil storage cotton roller rotatably installed on the U-shaped frame, the middle part of the oil storage cotton roller is rotatably installed in the U-shaped opening at the front end of the U-shaped frame via a connecting shaft, and the front end of the oil storage cotton roller is arranged on the outside of the front side of the U-shaped opening, and the front end outer surface of the oil storage cotton roller is in contact with the rear side surface of the car door; an oil cup is installed on the top of each group of the U-shaped frames, and the oil cup is filled with lubricating oil; a connecting hole is provided on the top of the oil cup, and a vertical through hole is provided on the top of the U-shaped frame, and a cotton rope is inserted in the connecting hole, one end of the cotton rope is inserted in the bottom end of the oil cup and immersed in the lubricating oil, and the other end of the cotton rope passes through the vertical through hole and rests on the top surface of the corresponding oil storage cotton roller.

[0017] In the above technical solution, at least two groups of guide rods are installed at the rear end of the U-shaped frame, and the guide rods are arranged perpendicular to the mounting plate. The mounting plate is provided with a plurality of groups of longitudinal holes from top to bottom, and the rear end of each group of the guide rods passes through a group of the longitudinal holes and is arranged on the rear side of the mounting plate. The rear end of the guide rods is screwed with a limiting nut, and the limiting nut is arranged on the rear side of the mounting plate; each group of the guide rods is sleeved with a longitudinal spring, the front end of the longitudinal spring abuts against the rear side surface of the U-shaped frame, and the rear end of the longitudinal spring abuts against the front side surface of the mounting plate, and the longitudinal spring pushes the U-shaped frame to move forward, so that the front outer surface of the oil storage cotton roller abuts against the rear side surface of the car door.

[0018] In the above technical solution, a plurality of groups of micro switches are installed on the rear end outer surface of the vertical plate at intervals from top to bottom.

[0019] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0020] 1. In the present invention, an anti-pinch mechanism is arranged between the car door and the front wall plate of the car, and a plastic block, a bracket, a micro switch and a clamping assembly are arranged. When a foreign object enters the gap during the opening process of the car door, the plastic block and the bracket will be pushed to move outward, thereby activating the micro switch. The micro switch feeds back data to the controller of the elevator, so that the car door is temporarily opened to prevent fingers from being further pinched into the gap between the car door and the front wall plate of the car, thereby effectively reducing safety hazards and improving the safety of the elevator car door during opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the first embodiment of the present invention;

[0022] Figure 2 is a schematic cross-sectional structural diagram of the anti-pinch mechanism in the first embodiment of the present invention;

[0023] Figure 3 It is a schematic diagram of the local structure of the limiting bolt and the transverse through groove in the first embodiment of the present invention;

[0024] Figure 4 It is a schematic cross-sectional structural diagram of the connection between the lubrication device and the mounting plate in the first embodiment of the present invention.

[0025] Among them: 1. Car; 2. Car door; 3. Opening; 4. Anti-pinch mechanism; 5. Bracket; 6. Plastic block; 7. Micro switch; 8. Horizontal plate; 9. Vertical plate; 10. Connecting plate; 11. Positioning plate; 12. Horizontal through groove; 13. Limit bolt; 14. Connecting rod; 15. Spring; 16. Outer limit head; 17. Inner limit head; 18. Mounting plate; 19. U-shaped frame; 20. Oil storage cotton roller; 21. Coupling; 22. Oil cup; 23. Lubricating oil; 24. Connecting hole; 25. Vertical through hole; 26. Cotton rope; 27. Guide rod; 28. Limit nut; 29. ​​Longitudinal spring; 30. Longitudinal hole. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0027] Example 1: See Figure 1 , 2 As shown, a car door anti-pinch device comprises a car 1 and a car door 2, an opening 3 is provided in the middle of the front side of the car, the car door is arranged at the front side of the opening, and an anti-pinch mechanism 4 is respectively provided on both sides of the opening, each group of the anti-pinch mechanism is respectively arranged between the car door and the front wall plate of the car, the anti-pinch mechanism comprises a bracket 5, a plastic block 6 and a plurality of groups of micro switches 7, the bracket is movably installed on the front wall plate of the car, the bracket can move laterally along the moving direction of the car door, the plastic block is installed on the front side of the bracket, and the rear side of the plastic block is arranged close to the rear side of the car door;

[0028] The bracket is provided with a plurality of sets of clamping components from top to bottom, and the clamping components push the bracket and the plastic block to move inward, so that the inner side of the plastic block is flush with the side wall of the opening;

[0029] A plurality of groups of micro switches are arranged at intervals on the right side of the bracket from top to bottom, and the contact end on the left side of the micro switch is in contact with the outer side surface of the bracket.

[0030] The distance between the plastic block and the car door is less than 6 mm.

[0031] In this embodiment, when the elevator is running, when the car door is open, the car door moves outward to open the opening to leak out, and when it is closed, the car door moves inward to close the opening. Among them, if there is an infant's finger or someone puts a foreign object into the gap between the car door and the plastic block, when the car door opens and moves outward, taking the infant's finger as an example, it will move outward synchronously with the car door and enter the gap. In the process of moving the hand toward the gap, the plastic block will be given an outward thrust, pushing the clamping assembly outward, so that the bracket compresses the contact of the micro switch, that is, triggering the micro switch, so that the car door will stop opening, preventing the infant from being injured, and preventing foreign objects from entering the gap to cause damage to the elevator or safety hazards. After the finger is removed or the foreign object is removed, the clamping assembly will push the plastic block and the bracket inward, the micro switch will reset, and will not be triggered, and the elevator can operate normally.

[0032] In this embodiment, since the height of the opening is generally more than 2 meters, and the entry of fingers or other foreign objects will only occur at a certain height position in the gap, and will not push the plastic block and the bracket as a whole to move outward at the same time, generally the position where the foreign object enters is compressed and moves outward with a larger amount of deformation, and the micro switch near this position can be detected at the first time, so that the depth of the foreign object entering the gap can be discovered and removed, which can effectively ensure the detection quality, effectively prevent the gap from pinching the hand, improve safety, and reduce safety hazards.

[0033] See also Figure 2 , 3 As shown, the front wall panels of the car on both sides of the opening respectively have L-shaped panels bent outward, and the L-shaped panels include a horizontal panel 8 and a vertical panel 9 connected to each other, the inner end of the horizontal panel is connected to the rear end side wall of the opening, and the rear end of the vertical panel is connected to the outer end of the horizontal panel, and the plastic block is arranged between the horizontal panel and the car door.

[0034] The bracket includes a connecting plate 10 and a positioning plate 11, the outer end of the connecting plate is connected to the middle part of the positioning plate, the positioning plate is arranged on the outer side of the vertical plate, the connecting plate is arranged on the rear side of the horizontal plate, and the plastic block is installed on the rear side surface of the connecting plate; the horizontal plate is provided with a plurality of groups of transverse through grooves 12 from top to bottom, and the transverse through grooves are arranged parallel to the moving direction of the car door, and at least one limiting bolt 13 is inserted in each group of the transverse through grooves, the screw head of the limiting bolt is arranged on the front side of the horizontal plate, and the rear end of the limiting bolt passes through the connecting plate and is connected to the plastic block, the bracket is installed on the horizontal plate via the limiting bolt, and the bracket can move in the transverse through groove via the limiting bolt.

[0035] In this embodiment, the connecting plate is used to contact the L-shaped plate and is also used for the installation of the plastic block. At the same time, the setting of the limiting bolts and the transverse through grooves guides and limits the transverse movement of the bracket, ensuring that the plastic block and the bracket can only move along the moving direction of the car door.

[0036] Wherein, when the inner side surface of the positioning plate contacts the outer side surface of the vertical plate, the inner side surface of the plastic block is flush with the side wall of the opening.

[0037] See also Figure 2 As shown, the clamping assembly includes a connecting rod 14 and a spring 15, and the vertical plate is provided with a plurality of groups of transverse holes from top to bottom, and the transverse holes are arranged parallel to the moving direction of the car door, and the corresponding positioning plate is provided with a plurality of groups of clearance holes, and each group of the clearance holes is arranged opposite to one of the transverse holes;

[0038] The middle part of each group of connecting rods is inserted into a group of transverse holes and the clearance holes. The outer end of the connecting rod is screwed with an outer end limit head 16, and the inner end of the connecting rod is screwed with an inner end limit head 17. The outer end limit head is arranged on the outer side of the positioning plate, and the inner end limit head is arranged on the inner side of the vertical plate. The spring is sleeved on the outside of the connecting rod, and the inner end of the spring is against the outer side surface of the inner end limit head, and the outer end of the spring is against the inner side surface of the vertical plate.

[0039] When the spring is in the extended state, the spring pushes the connecting rod, the inner limit head and the outer limit head to move inward, the inner side surface of the outer limit head abuts against the outer side surface of the positioning plate, and drives the bracket and the plastic block to move inward, so that the inner side surface of the positioning plate contacts the outer side surface of the vertical plate.

[0040] In this embodiment, a connecting rod and a spring are used to compress and limit the bracket, and the spring is used to give the bracket and the plastic block an inward thrust, so that the inner side of the plastic block is always flush with the side wall of the opening, and at the same time, the micro switch is never triggered. Only when the plastic block receives an outward squeezing force and a thrust will the spring be compressed, thereby triggering the micro switch, causing the car door to temporarily open, giving people time to take their fingers out of the gap. In this embodiment, a plastic block is used, which itself has a certain elasticity, so that even if the finger is stuck in the gap for a certain distance, the elastic deformation of the plastic block can prevent the finger from being injured as much as possible, and at the same time, it is further compressed to increase the gap, so that the finger can be taken out of the stuck gap.

[0041] The contact end on the left side of the micro switch contacts the outer side of the positioning plate; when the spring is compressed, the bracket and the plastic block move inward, and the positioning plate compresses the contact end of the micro switch. In this embodiment, the contact end of the micro switch is a spring-type structure. After the bracket gives it a thrust, it presses the contact end outward, so that the micro switch is triggered. After the bracket returns to its original position, the contact end automatically returns to its original position and is not triggered.

[0042] The middle part of the plastic block is arranged at the outer end of the front side of the opening, and the length of the plastic block is greater than the height of the opening. In this way, the plastic block can completely block the side of the opening, that is, there is a plastic block in the gap between the car door and the front wall of the car, ensuring that each position can play a protective role in preventing the hand from being pinched.

[0043] Wherein, a plurality of groups of micro switches are installed at intervals from top to bottom on the rear end outer surface of the vertical plate, so as to ensure as much as possible that after a certain position of the plastic block is squeezed, the micro switches at nearby positions will be triggered.

[0044] See also Figure 2 , 4 As shown, a lubricating device is also provided on the outside of the bracket, and the lubricating device comprises a plurality of groups of lubricating components arranged at intervals from top to bottom. A mounting plate 18 is installed on the outside of the bracket, and a plurality of groups of lubricating components are installed on the front end of the mounting plate, and the front end surface of the lubricating components contacts the rear side surface of the car door. The mounting plate will be vertically mounted on the outer side surface of the positioning plate, and the mounting plate is parallel to the connecting plate. The mounting plate will be in front of the outer end limit head and will not affect the movement of the outer end limit head.

[0045] The lubrication assembly includes a U-shaped frame 19 opening forward and an oil storage cotton roller 20 rotatably mounted on the U-shaped frame, the middle part of the oil storage cotton roller is rotatably mounted in the U-shaped opening at the front end of the U-shaped frame via a connecting shaft 21, and the front end of the oil storage cotton roller is arranged on the outside of the front side of the U-shaped opening, and the front end outer surface of the oil storage cotton roller is in contact with the rear side of the car door; an oil cup 22 is installed on the top of each group of the U-shaped frames, and the oil cup is filled with lubricating oil 23; a connecting hole 24 is provided on the top of the oil cup, and a vertical through hole 25 is provided on the top of the U-shaped frame, and a cotton rope 26 is inserted in the connecting hole, one end of the cotton rope is inserted in the bottom end of the oil cup and immersed in the lubricating oil, and the other end of the cotton rope passes through the vertical through hole and rests on the top surface of the corresponding oil storage cotton roller.

[0046] In this embodiment, since the car door is used in the elevator shaft for a long time, the environment is relatively humid, and sometimes the user accidentally or for other reasons, the rear side of the car door is scratched, so the car door is easy to rust, affecting the service life and aesthetics. At the same time, some people like to press their hands on the car door when riding the elevator, or manually prevent the car door from closing, or manually want to open the door, which poses certain safety hazards. Therefore, through the setting of the lubrication device, the rear side of the car door is lubricated, and the lubricating oil is applied to the rear side of the car door to reduce its release from the air, so as to play a certain protective role on the car door and prevent the car door from rusting. Moreover, since there is lubricating oil on the car door, most people are reluctant to touch the car door with lubricating oil with their hands, so as to improve the safety during the operation of the elevator. Moreover, by lubricating the car door, even if a finger or other object is stuck between the car door and the car, and the car door is still in the closing process, it can also play a lubricating role, preventing the car door from pinching the finger as much as possible, and making it easier to pull the finger out of the gap between the car door and the car, playing a lubricating and protective role.

[0047] Among them, if only one set of lubrication components with the same length as the height of the car door is used, the length is too long and easy to deform. Therefore, multiple sets of lubrication components are used with a small interval. The oil cup is used to supply oil to the oil storage cotton roller to ensure that the oil storage cotton roller can continuously lubricate the car door. In the process of opening and closing the car door, the oil storage cotton roller is always in rolling contact with the car door. Even if the lubricating oil is not applied to the interval of the lubrication component, the lubricating oil from the upper layer will gradually move down to this position due to the weight, or diffuse downward by itself, so that all positions on the rear side of the car door are protected by lubricating oil. Among them, the lubricating oil is brought into contact with the oil storage cotton roller through a cotton rope, and the oil storage cotton roller is continuously supplied with oil by the cotton rope. Even if the oil storage cotton roller rotates, it will not affect the normal oil supply, and the grease will generally not be wasted. The lubricating oil in the oil cup can be used for a long time, and the lubricating oil can be added during regular maintenance.

[0048] See also Figure 2 , 4 As shown, at least two groups of guide rods 27 are installed at the rear end of the U-shaped frame, and the guide rods are arranged perpendicular to the mounting plate. The mounting plate is provided with a plurality of groups of longitudinal holes 30 from top to bottom. The rear end of each group of the guide rods passes through a group of the longitudinal holes and is arranged on the rear side of the mounting plate. The rear end of the guide rods is screwed with a limiting nut 28, and the limiting nut is arranged on the rear side of the mounting plate; each group of the guide rods is sleeved with a longitudinal spring 29, the front end of the longitudinal spring abuts against the rear side surface of the U-shaped frame, and the rear end of the longitudinal spring abuts against the front side surface of the mounting plate. The longitudinal spring pushes the U-shaped frame to move forward, so that the front outer surface of the oil storage cotton roller abuts against the rear side surface of the car door.

[0049] In this embodiment, the U-shaped frame is fixed by the guide rod and the limit nut. At the same time, the U-shaped frame is pushed to move backward by the longitudinal spring, so that the oil storage cotton roller will contact the car door, ensuring that the lubricating oil can be applied normally. Even if the car door is slightly deformed backward, at most the longitudinal spring will be compressed, and the car door will be slightly deformed forward, and the longitudinal spring will extend, so that the oil storage cotton roller will always be in contact with the rear side of the car door, ensuring the lubrication effect. In addition, the connecting rod and the guide rod will be staggered in the longitudinal direction, so that even if the connecting rod moves outward and the guide rod moves backward at the same time, they will not collide with each other or interfere with each other.

Claims

1. A car door anti-pinch device, comprising a car and a car door, wherein an opening is provided in the middle of the front side of the car, and the car door is arranged in front of the opening, characterized in that: An anti-pinch mechanism is respectively provided on both sides of the opening, and each group of the anti-pinch mechanisms is respectively arranged between the car door and the front wall plate of the car, and the anti-pinch mechanism comprises a bracket, a plastic block and a plurality of groups of micro switches, the bracket is movably installed on the front wall plate of the car, and the bracket can move laterally along the moving direction of the car door, the plastic block is installed on the front side of the bracket, and the rear side of the plastic block is arranged close to the rear side of the car door; The bracket is provided with a plurality of sets of clamping components from top to bottom, and the clamping components push the bracket and the plastic block to move inward, so that the inner side of the plastic block is flush with the side wall of the opening; A plurality of groups of micro switches are arranged at intervals from top to bottom on the right side of the bracket, and the contact end on the left side of the micro switch is in contact with the outer side surface of the bracket; A lubricating device is also provided on the outer side of the bracket, and the lubricating device comprises a plurality of lubricating components arranged at intervals from top to bottom. A mounting plate is installed on the outer side of the bracket, and a plurality of lubricating components are installed on the front end of the mounting plate, and the front end surface of the lubricating component contacts the rear side surface of the car door; The lubrication assembly includes a U-shaped frame opening toward the front and an oil storage cotton roller rotatably mounted on the U-shaped frame, the middle part of the oil storage cotton roller being rotatably mounted in the U-shaped opening at the front end of the U-shaped frame via a connecting shaft, and the front end of the oil storage cotton roller being arranged outside the front side of the U-shaped opening, and the front end outer surface of the oil storage cotton roller being in contact with the rear side surface of the car door; an oil cup is installed on the top of each group of the U-shaped frames, and the oil cup is filled with lubricating oil; a connecting hole is provided on the top of the oil cup, and a vertical through hole is provided on the top of the U-shaped frame, and a cotton rope is inserted in the connecting hole, one end of the cotton rope is inserted in the bottom end of the oil cup and immersed in the lubricating oil, and the other end of the cotton rope passes through the vertical through hole and rests on the top surface of the corresponding oil storage cotton roller.

2. The anti-pinch device for car door according to claim 1, characterized in that: The front wall panels of the car on both sides of the opening respectively have L-shaped panels bent outward, and the L-shaped panels include a horizontal panel and a vertical panel connected to each other, the inner end of the horizontal panel is connected to the rear end side wall of the opening, and the rear end of the vertical panel is connected to the outer end of the horizontal panel, and the plastic block is arranged between the horizontal panel and the car door.

3. The anti-pinch device for car door according to claim 2, characterized in that: The bracket includes a connecting plate and a positioning plate, the outer end of the connecting plate is connected to the middle part of the positioning plate, the positioning plate is arranged on the outer side of the vertical plate, the connecting plate is arranged on the rear side of the horizontal plate, and the plastic block is installed on the rear side surface of the connecting plate; the horizontal plate is provided with a plurality of groups of transverse through grooves from top to bottom, the transverse through grooves are arranged parallel to the moving direction of the car door, and at least one limiting bolt is inserted in each group of the transverse through grooves, the screw head of the limiting bolt is arranged on the front side of the horizontal plate, the rear end of the limiting bolt passes through the connecting plate and is connected to the plastic block, the bracket is installed on the horizontal plate via the limiting bolt, and the bracket can move in the transverse through groove via the limiting bolt.

4. The anti-pinch device for car door according to claim 3 is characterized in that: When the inner side surface of the positioning plate contacts the outer side surface of the vertical plate, the inner side surface of the plastic block is flush with the side wall of the opening.

5. The anti-pinch device for car door according to claim 3 is characterized in that: The clamping assembly includes a connecting rod and a spring, the vertical plate is provided with a plurality of groups of transverse holes from top to bottom, the transverse holes are arranged parallel to the moving direction of the car door, and the corresponding positioning plate is provided with a plurality of groups of clearance holes, each group of the clearance holes is arranged opposite to one of the transverse holes; The middle part of each group of connecting rods is inserted into a group of transverse holes and the clearance holes, the outer end of the connecting rod is screwed with an outer end limit head, the inner end of the connecting rod is screwed with an inner end limit head, the outer end limit head is arranged on the outer side of the positioning plate, the inner end limit head is arranged on the inner side of the vertical plate, the spring is sleeved on the outside of the connecting rod, the inner end of the spring is against the outer side surface of the inner end limit head, and the outer end of the spring is against the inner side surface of the vertical plate; When the spring is in the extended state, the spring pushes the connecting rod, the inner limit head and the outer limit head to move inward, the inner side surface of the outer limit head abuts against the outer side surface of the positioning plate, and drives the bracket and the plastic block to move inward, so that the inner side surface of the positioning plate contacts the outer side surface of the vertical plate.

6. The anti-pinch device for car door according to claim 5, characterized in that: The contact end on the left side of the micro switch contacts the outer side surface of the positioning plate; when the spring is in a compressed state, the bracket and the plastic block move inward, and the positioning plate compresses the contact end of the micro switch.

7. The anti-pinch device for elevator door according to claim 1, characterized in that: At least two groups of guide rods are installed at the rear end of the U-shaped frame, and the guide rods are arranged perpendicular to the mounting plate. The mounting plate is provided with a plurality of groups of longitudinal holes from top to bottom. The rear end of each group of the guide rods passes through a group of the longitudinal holes and is arranged on the rear side of the mounting plate. The rear end of the guide rods is screwed with a limiting nut, and the limiting nut is arranged on the rear side of the mounting plate; a longitudinal spring is sleeved on each group of the guide rods, and the front end of the longitudinal spring abuts against the rear side surface of the U-shaped frame, and the rear end of the longitudinal spring abuts against the front side surface of the mounting plate. The longitudinal spring pushes the U-shaped frame to move forward, so that the front outer surface of the oil storage cotton roller abuts against the rear side surface of the car door.

8. The anti-pinch device for elevator door according to claim 2, characterized in that: A plurality of groups of micro switches are installed on the rear end outer side surface of the vertical plate at intervals from top to bottom.

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