Anti-pinch elevator door operator mechanism

Abstract

The application discloses an anti-pinch hand elevator door machine mechanism, which comprises a driving box, a driving mechanism, an extrusion mechanism and a maintenance mechanism. When the elevator needs to open or close the door, the motor works, the motor drives the bidirectional threaded rod to rotate, the ball nut pair on the bidirectional threaded rod rotates, the ball nut pair moves on the bidirectional threaded rod, when the elevator door moves to the middle, the two rubber protective sleeves are pressed against each other, even if the hand is pinched, the spring is compressed, the rubber protective sleeve moves into the protective groove, the damage caused by the pinching is reduced, and when the infrared sensor arranged in the rubber protective sleeve senses that the hand is pinched, the motor is controlled to reverse, the ball nut pair drives the elevator door to move outward through the moving block, the elevator door is opened, and subsequent damage is avoided.

Description

Technical Field

[0001] This invention relates to the field of elevator door operator technology, specifically to an anti-pinch elevator door operator mechanism. Background Technology

[0002] An elevator is a permanent transportation device that serves several specific floors within a building, with its car moving on at least two rigid tracks perpendicular to the horizontal plane or at an angle of less than 15° to the vertical. There are also escalator types, where steps are mounted on a continuously running track; these are commonly known as moving walkways or automatic stairs. The elevator door operator, also called a "door opener," is the device that opens and closes the elevator car doors.

[0003] When elevators are in operation, the anti-pinch measures in elevator door operators on the market generally use infrared sensors to measure and warn. However, under long-term operation, the lubricating oil on the surface of the main transmission mechanism is prone to drying out under high-speed friction, which leads to a decrease in the transmission efficiency of the device and cannot effectively ensure the transmission mechanism controls the movement of the elevator door, thus reducing the service life of the device. This problem needs to be addressed.

[0004] Therefore, it is necessary to design an elevator door operator mechanism that is both practical and ensures the efficiency of the device to prevent hand pinching. Summary of the Invention

[0005] The purpose of this invention is to provide an elevator door operator mechanism that prevents hand pinching, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an anti-pinch elevator door operator mechanism, including a drive box, a drive mechanism, a pressing mechanism and a maintenance mechanism.

[0007] The drive mechanism includes:

[0008] The motor is fixedly connected to the middle right side of the drive box. The motor has an output shaft, and a bidirectional threaded rod is fixedly connected to the motor output shaft. A ball nut pair is threadedly connected to the outer side of the bidirectional threaded rod. A moving block is fixedly connected to the bottom of the ball nut pair. An elevator door is fixedly connected to the bottom of the moving block. A protective groove is opened on the left side of the elevator door. A spring is fixedly connected to the right side of the protective groove. A rubber protective sleeve is fixedly connected to the left end of the spring.

[0009] According to the above technical solution, the extrusion mechanism includes an extrusion plate, a fixed plate, an air bladder, a connecting pipe, an oil storage block, a second spring, and a piston plate. The extrusion plate is fixedly connected to the left side of the ball nut assembly. The fixed plate is fixedly connected to the top center of the drive box. The air bladder is fixedly connected to the right side of the fixed plate. The connecting pipe is fixedly connected to the top left side of the air bladder. The oil storage block is fixedly connected to the top right side of the drive box. The second spring is fixedly connected to the inner wall of the front of the oil storage block. The piston plate is fixedly connected to the rear end of the second spring.

[0010] According to the above technical solution, the maintenance mechanism includes an oil outlet pipe, a connecting hose, an oil storage chamber, a limiting block, and an oiling ball bearing. The oil outlet pipe is fixedly connected to the middle of the back side of the oil storage block, the connecting hose is fixedly connected to the end of the oil outlet pipe away from the oil storage block, the oil storage chamber is opened on the right side inside the ball bearing nut pair, the limiting block is fixedly connected to the inner wall of the oil storage chamber, and the oiling ball bearing is disposed inside the limiting block.

[0011] According to the above technical solution, there are two of each of the ball bearing nut pair, moving block, elevator door, protective groove, spring one, and rubber protective sleeve. The two ball bearing nut pairs, moving blocks, elevator doors, protective grooves, spring one, and rubber protective sleeves are symmetrically distributed on the left and right sides of the drive box. Infrared sensors are provided at the top and bottom of the right side of the rubber protective sleeve, and the infrared sensors are electrically connected to the motor.

[0012] According to the above technical solution, the end of the connecting pipe away from the airbag is fixedly connected to the center of the front of the oil storage block, and the connecting pipe is connected to the front side inside the oil storage block, so that the air in the connecting pipe is introduced into the oil storage block.

[0013] According to the above technical solution, the oil storage block is provided with lubricating oil on the rear side, and the bottom of the extrusion plate is provided with a circular groove to accommodate the rotation of the bidirectional threaded rod, so that the extrusion plate and the bidirectional threaded rod do not interfere with each other.

[0014] According to the above technical solution, the end of the connecting hose away from the oil outlet pipe is fixedly connected to the middle of the back of the ball nut assembly, and the connecting hose is connected to the inside of the ball nut assembly, so that the lubricating oil in the connecting hose is introduced into the ball nut assembly.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: When the elevator needs to open or close the door, the motor works, which drives the bidirectional threaded rod to rotate. When the bidirectional threaded rod rotates, the ball nut pair on the bidirectional threaded rod rotates. When the ball nut pair rotates, it moves on the bidirectional threaded rod. At the same time, the ball nut pair moves and drives the elevator door to move through the moving block. When the elevator door moves to the center, the rubber protective sleeves on both sides face each other and squeeze. At this time, since the rubber protective sleeves are made of rubber, even if a hand is pinched, the spring is compressed, causing the rubber protective sleeve to move into the protective groove, reducing the injury when the hand is pinched. At the same time, when the infrared sensor installed in the rubber protective sleeve detects that a hand is pinched, it controls the motor to reverse, causing the ball nut pair to drive the elevator door to move outward through the moving block, opening the elevator door and avoiding subsequent injury.

[0016] When the ball nut assembly moves, the extrusion plate on the ball nut assembly moves and compresses the air bladder. At this time, the air in the air bladder is introduced into the oil storage block through the connecting pipe, which increases the pressure on the front side of the oil storage block. At this time, the second spring is stretched, and the piston plate pushes the lubricating oil in the oil storage block through the oil outlet pipe into the connecting hose. Then the connecting hose squeezes the lubricating oil into the oil storage chamber, so that the oiling ball in the limit block rotates and applies the lubricating oil to the thread gap on the outer wall of the bidirectional threaded rod as the ball nut assembly moves. This can maintain the lubricating oil on the outer surface of the bidirectional threaded rod, preventing the lubricating oil on the surface of the bidirectional threaded rod from drying out during long-term operation, which would reduce the overall transmission efficiency and ensure the service life of the device. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the interior of the drive box of the present invention;

[0020] Figure 3 This is a schematic diagram of an explosion at one point of the spring of the present invention;

[0021] Figure 4 This is a schematic diagram of the extrusion plate of the present invention;

[0022] Figure 5 This is a schematic diagram of two springs in this invention;

[0023] Figure 6 This is a schematic diagram of the connecting hose of the present invention;

[0024] Figure 7 This is a schematic diagram of the limiting block of the present invention;

[0025] Figure 8 This is a schematic diagram of an explosion at the oil-coated ball bearing of the present invention.

[0026] In the diagram: 1. Drive box; 2. Drive mechanism; 201. Motor; 202. Bidirectional threaded rod; 203. Ball bearing nut pair; 204. Moving block; 205. Elevator door; 206. Protective groove; 207. Spring 1; 208. Rubber protective sleeve; 3. Extrusion mechanism; 301. Extrusion plate; 302. Fixing plate; 303. Airbag; 304. Connecting pipe; 305. Oil storage block; 306. Spring 2; 307. Piston plate; 4. Maintenance mechanism; 401. Oil outlet pipe; 402. Connecting hose; 403. Oil storage chamber; 404. Limiting block; 405. Oiled ball bearing. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1-3 The present invention provides a technical solution: an anti-pinch elevator door operator mechanism, comprising a drive box 1, a drive mechanism 2, a pressing mechanism 3 and a maintenance mechanism 4.

[0029] The drive mechanism 2 includes:

[0030] Motor 201 is fixedly connected to the middle right side of drive box 1. Motor 201 has an output shaft. A bidirectional threaded rod 202 is fixedly connected to the output shaft of motor 201. A ball nut pair 203 is threadedly connected to the outer side of the bidirectional threaded rod 202. A moving block 204 is fixedly connected to the bottom of the ball nut pair 203. An elevator door 205 is fixedly connected to the bottom of the moving block 204. A protective groove 206 is opened on the left side of the elevator door 205. A spring 207 is fixedly connected to the right side of the protective groove 206. A rubber protective sleeve 208 is fixedly connected to the left end of the spring 207.

[0031] There are two of each of the following components: ball bearing nut assembly 203, moving block 204, elevator door 205, protective groove 206, spring 207, and rubber protective sleeve 208. The two ball bearing nut assemblies 203, moving block 204, elevator door 205, protective groove 206, spring 207, and rubber protective sleeve 208 are symmetrically distributed on the left and right sides of the drive box 1. Infrared sensors are installed at the top and bottom of the right side of the rubber protective sleeve 208, and the infrared sensors are electrically connected to the motor 201.

[0032] When the elevator doors need to open or close, motor 201 operates, driving the bidirectional threaded rod 202 to rotate. This rotation causes the ball bearing nut assembly 203 on the bidirectional threaded rod 202 to rotate, moving it along the bidirectional threaded rod 202. Simultaneously, the movement of the ball bearing nut assembly 203, via the moving block 204, moves the elevator door 205. As the elevator door 205 moves towards the center, the rubber bushings on both sides... The rubber protective sleeves 208 are pressed against each other. Since the rubber protective sleeves 208 are made of rubber, even if the hand is pinched, the spring 207 is compressed, causing the rubber protective sleeves 208 to move into the protective groove 206, reducing the injury when the hand is pinched. At the same time, when the infrared sensor installed in the rubber protective sleeves 208 detects that the hand is pinched, it controls the motor 201 to reverse, causing the ball nut pair 203 to drive the elevator door 205 to move outward through the moving block 204, opening the elevator door and preventing further injury.

[0033] Please see Figure 4-8 The present invention provides a technical solution: the extrusion mechanism 3 includes an extrusion plate 301, a fixing plate 302, an air bladder 303, a connecting pipe 304, an oil storage block 305, a second spring 306, and a piston plate 307. The extrusion plate 301 is fixedly connected to the left side of the ball nut assembly 203. The fixing plate 302 is fixedly connected to the top center of the drive box 1. The air bladder 303 is fixedly connected to the right side of the fixing plate 302. The connecting pipe 304 is fixedly connected to the top left side of the air bladder 303. The oil storage block 305 is fixedly connected to the top right side of the drive box 1. The second spring 306 is fixedly connected to the inner wall of the front of the oil storage block 305. The piston plate 307 is fixedly connected to the rear end of the second spring 306.

[0034] The maintenance mechanism 4 includes an oil outlet pipe 401, a connecting hose 402, an oil storage chamber 403, a limiting block 404, and an oiling ball bearing 405. The oil outlet pipe 401 is fixedly connected to the middle of the back of the oil storage block 305. The connecting hose 402 is fixedly connected to the end of the oil outlet pipe 401 away from the oil storage block 305. The oil storage chamber 403 is opened on the right side inside the ball bearing nut pair 203. The limiting block 404 is fixedly connected to the inner wall of the oil storage chamber 403. The oiling ball bearing 405 is disposed inside the limiting block 404.

[0035] The end of the connecting pipe 304 away from the airbag 303 is fixedly connected to the center of the front of the oil storage block 305, and the connecting pipe 304 is connected to the front side of the oil storage block 305, so that the air in the connecting pipe 304 is introduced into the oil storage block 305.

[0036] The oil storage block 305 is provided with lubricating oil on the rear side, and the bottom of the extrusion plate 301 is provided with a circular groove to accommodate the rotation of the bidirectional threaded rod 202, so that the extrusion plate 301 and the bidirectional threaded rod 202 do not interfere with each other.

[0037] The end of the connecting hose 402 away from the oil outlet pipe 401 is fixedly connected to the middle of the back of the ball nut assembly 203, and the connecting hose 402 is connected to the inside of the ball nut assembly 203, so that the lubricating oil in the connecting hose 402 is introduced into the ball nut assembly 203.

[0038] When the ball nut assembly 203 moves, the extrusion plate 301 on the ball nut assembly 203 moves and extrudes the air bladder 303. At this time, the air in the air bladder 303 is introduced into the oil storage block 305 through the connecting pipe 304, which increases the pressure on the front side of the oil storage block 305. At this time, the second spring 306 is stretched, and the piston plate 307 pushes the lubricating oil in the oil storage block 305 through the oil outlet pipe 401 to the connecting hose 402. Then the connecting hose 402 squeezes the lubricating oil into the oil storage chamber 403, so that the oiling ball 405 in the limit block 404 rotates and coats the thread gap on the outer wall of the bidirectional threaded rod 202 as the ball nut assembly 203 moves. This can coat and maintain the outer surface of the bidirectional threaded rod 202, preventing the lubricating oil on the surface of the bidirectional threaded rod 202 from drying out during long-term operation, which would reduce the overall transmission efficiency and ensure the service life of the device.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An anti-pinch elevator door machine mechanism, characterized by: Including drive box (1), drive mechanism (2), extrusion mechanism (3) and maintenance mechanism (4); Wherein, the drive mechanism (2) includes: Motor (201), motor (201) is fixedly connected to the right side of the middle part of drive box (1), motor (201) has output shaft, motor (201) output shaft is fixedly connected with two-way threaded rod (202), two-way threaded rod (202) outside is connected with ball nut pair (203), ball nut pair (203) bottom is fixedly connected with moving block (204), moving block (204) bottom is fixedly connected with elevator door (205), elevator door (205) left side is provided with protection groove (206), protection groove (206) inside right side is fixedly connected with spring one (207), spring one (207) left end is fixedly connected with rubber protective sleeve (208); The extrusion mechanism (3) includes extrusion plate (301), fixed plate (302), air bag (303), connecting pipe (304), oil storage block (305), spring two (306) and piston plate (307), the extrusion plate (301) is fixedly connected to the left side of the ball nut pair (203), the fixed plate (302) is fixedly connected to the inner top middle part of the drive box (1), the air bag (303) is fixedly connected to the right side of the fixed plate (302), the connecting pipe (304) is fixedly connected to the top left side of the air bag (303), the oil storage block (305) is fixedly connected to the top right side of the drive box (1), the spring two (306) is fixedly connected to the front inner wall of the oil storage block (305), the piston plate (307) is fixedly connected to the rear end of the spring two (306); The maintenance mechanism (4) includes oil outlet pipe (401), connecting hose (402), oil storage cavity (403), limiting block (404) and oiling ball (405), the oil outlet pipe (401) is fixedly connected to the middle part of the back of the oil storage block (305), the connecting hose (402) is fixedly connected to the end of the oil outlet pipe (401) away from the oil storage block (305), the oil storage cavity (403) is opened to the right side in the ball nut pair (203), the limiting block (404) is fixedly connected to the inner wall of the oil storage cavity (403), the oiling ball (405) is arranged in the limiting block (404); The ball nut pair (203), moving block (204), elevator door (205), protection groove (206), spring one (207), rubber protective sleeve (208) are all two, two ball nut pairs (203), moving blocks (204), elevator doors (205), protection grooves (206), spring one (207), rubber protective sleeves (208) are symmetrically distributed in the left and right sides of the drive box (1), the right side top and bottom of the rubber protective sleeve (208) are provided with infrared sensors, and the infrared sensors are electrically connected with the motor (201); The connecting pipe (304) is fixedly connected to the front middle part of the oil storage block (305) away from the air bag (303), and the connecting pipe (304) is connected with the inner front side of the oil storage block (305). The oil storage block (305) is provided with lubricating oil on the inner back side, and the extrusion plate (301) is provided with a circular groove for accommodating rotation of the bidirectional threaded rod (202) on the inner bottom. The connecting hose (402) is fixedly connected with the back middle part of the ball nut pair (203) at the end away from the oil outlet pipe (401), and the connecting hose (402) is in communication with the ball nut pair (203) inside.

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