Elevator door with anti-pinch protection function

Abstract

The utility model discloses an elevator door with an anti-pinch protection function, belongs to the technical field of elevator doors, and realizes omnibearing monitoring and protection of a closed area of the elevator door by combining a photoelectric sensor and a mechanical anti-pinch component. The elevator door with the anti-pinch protection function comprises a door frame, door bodies are symmetrically installed on the side edges of the door frame, transmission assemblies for assisting opening and closing of the door bodies are installed at the positions, corresponding to the positions over the door bodies, of the door frame, stopping blocks are installed at the tops and the bottoms of the adjacent side edges of the two door bodies correspondingly, and an anti-pinch groove is formed between the two door bodies; an anti-pinch assembly for assisting in clamping prevention is installed at the anti-pinch groove, and photoelectric sensors are installed on the adjacent side edges of the two door bodies. The anti-pinch assembly comprises a fixing block horizontally fixed in the anti-pinch groove, the fixing block is sleeved with an anti-pinch block in a sliding mode, a sliding cavity for the fixing block to slide is formed in the anti-pinch block, and a jacking spring for assisting jacking is installed in the sliding cavity.

Description

Technical Field

[0001] This utility model belongs to the field of elevator door technology, specifically relating to an elevator door with anti-pinch protection. Background Technology

[0002] An elevator is a permanent transportation device that serves several specific floors within a building. Its car moves along at least two rigid tracks perpendicular to the horizontal plane or at an angle of less than 15° to the vertical. There are also escalators, where steps are mounted on a continuous track and run; these are commonly known as moving walkways or automatic stairs. A fixed lifting device serving designated floors, a vertical elevator has a car whose size and structure facilitate passenger entry and exit or loading and unloading of goods. Elevators use permanent magnet synchronous traction machines as their power source. This reduces the machine room footprint and offers advantages such as low energy consumption, high energy efficiency, and fast lifting speed, greatly contributing to the development of high-rise buildings in the real estate market. For passenger protection, elevators are equipped with elevator doors.

[0003] Traditional elevator door systems generally suffer from a lack of sophisticated safety protection mechanisms. Their door operator control systems are only equipped with basic photoelectric sensors or mechanical touch panels, lacking a multimodal anti-pinch protection architecture. When the door is closing, existing technologies have three major hidden dangers: First, infrared light curtains or single-point sensors have blind spots and insufficient recognition rates for low obstacles such as children's limbs and pets; second, mechanical touch panels are limited by deformation thresholds, resulting in delayed trigger responses to thin clothing or flexible objects. Therefore, an elevator door with anti-pinch protection is needed to help solve this problem. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an elevator door with anti-pinch protection. This elevator door with anti-pinch protection combines photoelectric sensors and mechanical anti-pinch components to achieve all-round monitoring and protection of the closed area of ​​the elevator door.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides an elevator door with anti-pinch protection. The elevator door with anti-pinch protection includes a door frame, door bodies symmetrically installed on the side of the door frame, a transmission component for assisting the opening and closing of the door bodies installed on the door frame directly above the door bodies, blocking blocks installed at the top and bottom of the two adjacent side of the two door bodies, an anti-pinch groove is opened between the two door bodies, an anti-pinch component for assisting anti-pinch is installed in the anti-pinch groove, and a photoelectric sensor is installed on the two adjacent side of the two door bodies.

[0008] The anti-pinch assembly includes a fixing block horizontally fixed in the anti-pinch groove, an anti-pinch block slidably mounted on the fixing block, a sliding cavity for the fixing block to slide inside the anti-pinch block, and a pressure spring for auxiliary pressure installed in the sliding cavity.

[0009] Furthermore, the vertical cross-section of the fixing block is T-shaped, and a protective pad is embedded at the outer edge of the anti-pinch block.

[0010] Furthermore, a fixing groove is provided on each of the two adjacent sides of the door body, and a blocking block is inserted and installed in the fixing groove. The blocking block is fixed in the fixing groove by fixing bolts.

[0011] Furthermore, the transmission assembly includes a first transmission wheel symmetrically rotated on the door frame, the two first transmission wheels are connected by a first transmission belt, a first connecting block and a second connecting block are fixedly fixed on the first transmission belt in an alternating manner, the first connecting block and the second connecting block are respectively fixed at the top of the two door bodies, and a transmission motor that drives the first transmission wheel to rotate is installed on the door frame.

[0012] Furthermore, a second transmission wheel is fixed to the front end of the shaft of the transmission motor, a second transmission wheel is fixed on one of the first transmission wheels, and the two second transmission wheels are connected by a second transmission belt.

[0013] Furthermore, a guide rail is horizontally fixed on the door frame, the guide rail is embedded in the door body, and ball bearings are rolled along the outer edge of the guide rail.

[0014] Furthermore, symmetrical tracks are provided at the bottom of the door body, and movable wheels for sliding are provided at the protruding position at the bottom of the door frame.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention combines photoelectric sensors and mechanical anti-pinch components to achieve comprehensive monitoring and protection of the elevator door's closed area. The photoelectric sensors can detect obstacles within the closed area in real time and immediately trigger the drive motor to stop and reverse upon detection, opening the door and effectively preventing entrapment accidents. The mechanical anti-pinch components, in situations where the sensor is in a blind spot or an obstacle is not detected in time, prevent further clamping of limbs through the sliding retraction of the anti-pinch block and the reverse thrust of the top pressure spring, providing additional safety for passengers. This dual protection mechanism significantly improves elevator door safety, especially reducing the risk of injury to children and vulnerable groups. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the door body of this utility model;

[0021] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A;

[0022] Figure 4 This is a cross-sectional view of the anti-pinch component on the door body of this utility model.

[0023] The labels in the attached diagram are as follows: 1. Door frame; 2. Door body; 21. Guide rail; 22. Ball bearing; 3. Transmission assembly; 4. First transmission wheel; 5. First transmission belt; 6. Second transmission belt; 7. Transmission motor; 8. Second transmission wheel; 9. First connecting block; 10. Second connecting block; 11. Blocking block; 111. Fixing groove; 12. Fixing bolt; 13. Photoelectric sensor; 14. Anti-pinch assembly; 15. Fixing block; 16. Anti-pinch block; 161. Protective pad; 17. Top pressure spring; 18. Moving wheel; 181. Slide rail. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This specific embodiment is an elevator door with anti-pinch protection, such as... Figure 1 , Figure 2 and Figure 3As shown, the elevator door with anti-pinch protection includes a door frame 1, and door bodies 2 are symmetrically installed on the side of the door frame 1. A transmission assembly 3 for assisting the opening and closing of the door body 2 is installed on the door frame 1 directly above the door body 2. The transmission assembly 3 includes first transmission wheels 4 symmetrically rotated on the door frame 1. The two first transmission wheels 4 are connected by a first transmission belt 5. First connecting blocks 9 and second connecting blocks 10 are fixed vertically on the first transmission belt 5. The first connecting blocks 9 and second connecting blocks 10 are respectively fixed at the top of the two door bodies 2. A transmission motor 7 that drives the first transmission wheels 4 to rotate is installed on the door frame 1. A second transmission wheel 8 is fixed to the front end of the shaft of the transmission motor 7. A second transmission wheel 8 is fixed on one of the first transmission wheels 4. The two second transmission wheels 8 are connected by a second transmission belt 6. Through the transmission assembly 3, the door body 2 can be stably opened and closed during operation.

[0026] A guide rail 21 is horizontally fixed on the door frame 1. The guide rail 21 is embedded in the door body 2. A ball bearing 22 is rolled at the outer edge of the guide rail 21. A slide rail 181 is symmetrically arranged at the bottom of the door body 2. A movable wheel 18 is provided at the protruding position at the bottom of the door frame 1 for the slide rail 181 to slide.

[0027] The door 2 is guided along a predetermined trajectory by the cooperation of the electric guide rail 21 and the ball bearing 22. The moving wheel 18 rolls in the slide rail 181 to reduce frictional resistance. The staggered connecting block design ensures the synchronicity of the opening and closing of the door 2. The combination of the transmission belt and the ball bearing guide rail reduces operating noise and energy consumption. The structure of the slide rail 181 and the moving wheel 18 improves the door 2's resistance to off-center loads and extends the service life of the transmission components 3. The guide rail 21 is embedded in the top of the door 2 and forms a dual guiding system with the bottom slide rail 181 to enhance the operating stability of the door 2.

[0028] like Figure 1 , Figure 2 and Figure 4 As shown, blocking blocks 11 are installed at the top and bottom of each adjacent side of the two door bodies 2. Fixing grooves 111 are formed on each adjacent side of the two door bodies 2, and blocking blocks 11 are inserted into the fixing grooves 111. The blocking blocks 11 are fixed in the fixing grooves 111 by fixing bolts 12. An anti-pinch groove is formed between the two door bodies 2, and an auxiliary anti-pinch component 14 is installed in the anti-pinch groove. A photoelectric sensor 13 is installed on each adjacent side of the two door bodies 2. The photoelectric sensor 13 is model NDS-83-PO / PN, and can be used but is not limited to this model. The anti-pinch component 14 includes a fixing block 15 horizontally fixed in the anti-pinch groove. An anti-pinch block 16 is slidably mounted on the fixing block 15. The anti-pinch block 16 is supported by a flexible material, such as rubber. A sliding cavity is formed inside the anti-pinch block 16 for the fixing block 15 to slide, and a pressure spring 17 for auxiliary pressure is installed in the sliding cavity.

[0029] By combining a photoelectric sensor 13 with a mechanical anti-pinch component 14, comprehensive monitoring and protection of the elevator door's closed area is achieved. The photoelectric sensor 13 can detect obstacles within the closed area of ​​the door 2 in real time and immediately triggers the drive motor 7 to stop and reverse when an obstacle is detected, causing the door 2 to open, effectively preventing accidents involving people being pinched. The mechanical anti-pinch component 14, in the blind spot of the photoelectric sensor 13 or when an obstacle is not detected in time, prevents limbs from being further pinched through the sliding retraction of the anti-pinch block 16 and the reverse thrust of the top pressure spring 17, providing additional safety for passengers. This dual protection mechanism significantly improves the safety of the elevator door, especially reducing the risk of injury to children and people with special needs.

[0030] Working principle:

[0031] When the elevator door closes, the anti-pinch block 16 of the anti-pinch assembly 14 is kept in its initial extended state by the top pressure spring 17, forming a flexible buffer layer with the anti-pinch groove of the adjacent door body 2. If the photoelectric sensor 13 detects an obstacle, the drive motor 7 immediately stops and drives the first drive belt 5 in the reverse direction to open the door body 2. If the obstacle is in the sensor blind zone, the anti-pinch block 16 slides and retracts along the fixed block 15 after being pressed, and drives the top pressure spring 17 to be compressed. At this time, the pinched limbs or clothes can be pulled out, so as to avoid injury caused by the limbs being pinched by the elevator door for a long time.

[0032] The photoelectric sensor 13 and the mechanical anti-pinch component 14 form a dual protection, effectively eliminating detection blind spots. The protective pad 161 is made of flexible material to avoid the clamping force acting directly on the human body, especially reducing the risk of injury to children and thin clothing.

[0033] When the elevator door opens and closes, the drive motor 7 drives the second drive wheel 8 through the second drive belt 6, which in turn drives the first drive wheel 4 to rotate, and the first drive belt 5 moves accordingly. The first connecting block 9 and the second connecting block 10 are respectively fixed to the upper and lower intersecting sections of the first drive belt 5, so that the two door bodies 2 can move horizontally in opposite directions synchronously.

[0034] When the door 2 moves, the electric guide rail 21 and the ball bearing 22 cooperate to guide the door 2 to run along a predetermined trajectory. The moving wheel 18 rolls in the slide rail 181 to reduce frictional resistance. The staggered connecting block design ensures the synchronicity of the opening and closing of the door 2. The combination of the transmission belt and the ball bearing 22 guide rail reduces operating noise and energy consumption. The structure of the slide rail 181 and the moving wheel 18 improves the door 2's resistance to off-center loads and extends the service life of the transmission component 3. The guide rail 21 is embedded in the top of the door 2 and forms a double guide system with the bottom slide rail 181 to enhance the operating stability of the door 2.

[0035] The blocking block 11 is inserted into the fixing groove 111 of the door body 2 by fixing bolts 12, forming a rigid limit when the door body 2 is closed. The anti-pinch block 16 and the fixing block 15 adopt a T-shaped cross section to prevent the anti-pinch block 16 from coming out of the sliding cavity when subjected to force. The modular installation method facilitates the quick replacement of the blocking block 11 and the anti-pinch component 14. The T-shaped fixing structure improves the reliability of the anti-pinch block 16.

[0036] All technical features in this embodiment can be freely combined according to actual needs.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. An elevator door with anti-trap protection, comprising a door frame (1), characterized in that, A door body (2) is symmetrically installed on the side of the door frame (1). A transmission component (3) for assisting the opening and closing of the door body (2) is installed on the door frame (1) directly above the door body (2). A blocking block (11) is installed at the top and bottom of the two adjacent sides of the two door bodies (2). An anti-pinch groove is opened between the two door bodies (2). An anti-pinch component (14) for assisting anti-pinch is installed in the anti-pinch groove. A photoelectric sensor (13) is installed on the adjacent sides of the two door bodies (2). The anti-pinch assembly (14) includes a fixing block (15) horizontally fixed in the anti-pinch groove. An anti-pinch block (16) is slidably mounted on the fixing block (15). The anti-pinch block (16) has a sliding cavity for the fixing block (15) to slide inside. An auxiliary pressing spring (17) is installed in the sliding cavity.

2. The elevator door with anti-pinch protection according to claim 1, wherein, The vertical cross section of the fixing block (15) is T-shaped, and a protective pad (161) is embedded at the outer edge of the anti-pinch block (16).

3. The elevator door with anti-pinch protection according to claim 1, wherein, A fixing groove (111) is provided on one side of each of the two door bodies (2). A blocking block (11) is inserted into the fixing groove (111) and the blocking block (11) is fixed in the fixing groove (111) by a fixing bolt (12).

4. The elevator door with anti-pinch protection of claim 1, wherein, The transmission assembly (3) includes a first transmission wheel (4) symmetrically rotated on the door frame (1). The two first transmission wheels (4) are connected by a first transmission belt (5). A first connecting block (9) and a second connecting block (10) are fixed on the first transmission belt (5) in an alternating manner. The first connecting block (9) and the second connecting block (10) are respectively fixed at the top of the two door bodies (2). A transmission motor (7) that drives the first transmission wheel (4) to rotate is installed on the door frame (1).

5. An elevator door with anti-trap protection according to claim 4, characterized in that, The front end of the shaft of the drive motor (7) is fixed with a second drive wheel (8), and a second drive wheel (8) is fixed on one of the first drive wheels (4). The two second drive wheels (8) are connected by a second drive belt (6).

6. The elevator door with anti-pinch protection of claim 1, wherein, A guide rail (21) is horizontally fixed on the door frame (1). The guide rail (21) is embedded in the door body (2). Ball bearings (22) are rolled at the outer edge of the guide rail (21).

7. The elevator door with anti-pinch protection of claim 1, wherein, The bottom of the door body (2) is symmetrically provided with slide rails (181), and the bottom of the door frame (1) is provided with movable wheels (18) for the slide rails (181) to slide.

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