Elevator door body with protection function

Abstract

This invention relates to the technical field of elevators, and more particularly to an elevator door with a protective function, comprising: a door body; several door bodies slidably connected to a guide rail; several anti-pinch rubber strips provided on each door body; a capacitive sensor installed inside each anti-pinch rubber strip; several electric push rods fixedly connected to each door body; a connecting plate slidably connected to each door body, the connecting plate being fixedly connected to the telescopic end of the corresponding electric push rod; a movable rod slidably connected to each connecting plate; and several pressure sensors fixedly connected to each connecting plate. When a user places goods against the edge of the door body to keep the door in a normally open state, the movable rod blocks the goods, avoiding the problem of elastic decay and decreased sensitivity of the capacitive sensor caused by prolonged pressure of the goods on the anti-pinch rubber strips, thus ensuring the sensitivity and reliability of the anti-pinch function.

Description

Technical Field

[0001] This invention relates to the technical field of elevators. More specifically, this invention relates to an elevator door with protective functions. Background Technology

[0002] Elevator door safety protection structures are mainly divided into two categories: contact and non-contact. Modern elevators generally use a combination of both, working together from multiple levels such as sensing, mechanics, and control to minimize the occurrence of pinching accidents. Contact protection typically involves installing rubber anti-pinch strips along the edge of the elevator door, with capacitive or pressure-sensitive sensors embedded inside. When the door comes into contact with an obstacle during closing, the rubber strip deforms under pressure, triggering the internal sensors. The control system then instructs the door to stop closing and open in the opposite direction, thus preventing pinching injuries.

[0003] However, in actual use, especially when moving goods, users often lean items against elevator doors, keeping them permanently open, causing the rubber anti-pinch strips to be under compression for extended periods. This continuous pressure not only accelerates the aging of the rubber material, causing it to lose its original elasticity and cushioning properties, but also leads to prolonged pressure on internal conductive materials or pressure-sensitive elements. This can cause resistance drift or adhesion of the sensing layer, making the sensor sluggish or even malfunctioning. Ultimately, this affects the sensitivity and reliability of the entire anti-pinch system, shortens its lifespan, and creates safety hazards. Summary of the Invention

[0004] To overcome the drawback that when users move goods, they often place items against the elevator door, keeping it in a constantly open state, which causes the rubber anti-pinch strip to be compressed for a long time, ultimately affecting the sensitivity and reliability of the entire anti-pinch system, this invention provides an elevator door with protective functions.

[0005] The technical solution is as follows: An elevator door with protective functions includes a housing and a guide rail located below the housing; it also includes a door body, anti-pinch rubber strips, electric push rods, connecting plates, movable rods, pressure sensors, springs, and a drive assembly; several door bodies are slidably connected to the guide rail; each door body is provided with several anti-pinch rubber strips; a capacitive sensor is installed inside the anti-pinch rubber strip; several electric push rods are fixedly connected to each door body, and the extension and retraction direction of the electric push rods is parallel to the sliding direction of the door body; a connecting plate is slidably connected to each door body, and the connecting plate is fixedly connected to the extension and retraction end of the corresponding electric push rod; a movable rod is slidably connected to each connecting plate; several pressure sensors are fixedly connected to each connecting plate; several springs are fixedly connected to each connecting plate, and the springs are fixedly connected to the corresponding movable rods; a drive assembly is connected to the housing, and the drive assembly is used to drive the door body to move horizontally.

[0006] Furthermore, the drive assembly includes an electric slide rail and an electric slider; the electric slide rail is fixedly connected to the cover; several electric sliders are slidably connected to the electric slide rail, and the electric sliders are fixedly connected to the corresponding door body.

[0007] Furthermore, infrared sensors are installed on the door.

[0008] Furthermore, it also includes baffles; several baffles are rotatably connected to the movable rod via an electric rotating shaft.

[0009] Furthermore, the surface of the baffle is set to a smooth surface.

[0010] Furthermore, it also includes elastic strips; each anti-pinch rubber strip is fixed with an elastic strip.

[0011] Furthermore, the elastic strip is designed as a hollow structure.

[0012] Furthermore, the elastic strip is made of wear-resistant rubber.

[0013] Furthermore, the contact points between the cover and the door are all designed to be smooth surfaces.

[0014] Furthermore, rollers are installed on the lower side of the door.

[0015] The beneficial effects of the present invention are as follows: First, when the user places goods against the edge of the door to keep the door in the normally open state, the movable rod blocks the goods, avoiding the problem of elastic decay and decreased sensitivity of capacitive sensor caused by the goods squeezing the anti-pinch rubber strip for a long time, which helps to ensure the sensitivity and reliability of the anti-pinch function. Second, the movable rod and the baffle work together to block the goods, preventing the protruding parts of the goods from squeezing the anti-pinch rubber strip, which helps to improve the protection effect; Third, after the movable rod and the baffle retract between the two anti-pinch rubber strips, the gap between the ends of the two anti-pinch rubber strips is sealed by the elastic strip, preventing the user's fingers from getting stuck in the gap between the anti-pinch rubber strip, the movable rod and the baffle, thus ensuring strong safety. Fourth, it serves as a baffle to block goods and can also guide the end of the movable rod through the two elastic strips, making the insertion and resetting operation of the movable rod smoother and avoiding jamming. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the elevator door body with protective function according to the present invention is shown; Figure 2 A cross-sectional view of the elevator door body with protective function according to the present invention is shown; Figure 3 A schematic diagram of the anti-pinch rubber strip of the present invention is shown; Figure 4A schematic diagram of the structure of the electric actuator of the present invention is shown; Figure 5 A schematic diagram of the structure of the movable rod of the present invention is shown; Figure 6 A schematic diagram of the pressure sensor and spring of the present invention is shown; Figure 7 A schematic diagram of the elastic strip of the present invention is shown; Figure 8 A schematic diagram of the movable rod and elastic strip of the present invention after being retracted is shown.

[0017] In the attached diagram: 1-Cover, 2-Guide rail, 3-Door body, 4-Anti-pinch rubber strip, 5-Electric push rod, 6-Connecting plate, 7-Moving rod, 8-Pressure sensor, 9-Spring, 201-Electric slide rail, 202-Electric slider, 203-Baffle, 204-Elastic strip. Detailed Implementation

[0018] The invention will now be described more fully below with reference to the accompanying drawings, in which presently preferred embodiments of the invention are illustrated. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to those skilled in the art.

[0019] Example 1: An elevator door with protective functions, such as... Figures 1-8 As shown, the device includes a housing 1 and a guide rail 2; the guide rail 2 is located below the housing 1; it also includes a door body 3, anti-pinch rubber strips 4, electric push rods 5, connecting plates 6, movable rods 7, pressure sensors 8, springs 9, and a drive assembly; two door bodies 3 are slidably connected to the guide rail 2; each door body 3 is provided with two anti-pinch rubber strips 4; a capacitive sensor is installed inside the anti-pinch rubber strips 4; two electric push rods 5 are fixedly connected to each door body 3, and the extension and retraction direction of the electric push rods 5 is parallel to the sliding direction of the door body 3; a connecting plate 6 is slidably connected to each door body 3, and the connecting plate 6 is fixedly connected to the extension and retraction end of the corresponding electric push rod 5, and the connecting plate 6 is made of alloy material; a movable rod 7 is slidably connected to each connecting plate 6; two pressure sensors 8 are fixedly connected to each connecting plate 6; two springs 9 are fixedly connected to each connecting plate 6, and the springs 9 are fixedly connected to the corresponding movable rods 7; a drive assembly is connected to the housing 1.

[0020] The drive assembly includes an electric slide rail 201 and an electric slider 202; the electric slide rail 201 is bolted to the cover 1; two electric sliders 202 are slidably connected to the electric slide rail 201, and the electric sliders 202 are fixedly connected to the corresponding door body 3.

[0021] Infrared sensors are installed on the door body 3. The infrared sensors emit infrared rays to form an infrared light curtain between the two door bodies 3. When an object passes through the light curtain, the drive component controls the door body 3 to open, thereby achieving the protection function.

[0022] During the closing process, the electric slider 202 is activated, causing the door 3 to move towards each other along the electric slide rail 201. During this process, the infrared sensor on the door 3 emits infrared rays, forming a light curtain between the two door 3. When an object passes through the light curtain, the infrared sensor detects that the light is blocked. At this time, the electric slider 202 is controlled to move the two door 3 in opposite directions and open, thus achieving a non-contact protection function. In the final stage of closing, some users may put their hands between the two door 3 that are about to close and block the door 3 with their hands to prevent it from closing. At this time, the anti-pinch rubber strip 4 comes into contact with the person's hand and is squeezed and deformed, triggering the sensor to open the door in the opposite direction, thus preventing injury to the person's hand. After the anti-pinch rubber strip 4 is squeezed, its internal capacitive sensor is triggered, controlling the electric slider 202 to move the two door 3 in opposite directions and open, thus achieving a contact protection function.

[0023] When moving goods, some users will directly place objects against the edge of the door 3, keeping the door 3 in a normally open state. At this time, the goods press against the rigid movable rod 7, pushing it inwards and compressing the pressure sensor 8 and spring 9. The pressure sensor 8 detects the pressure and controls the electric slider 202 to stop closing the door 3. After the goods are moved into the elevator, the movable rod 7 stops being compressed. The spring 9 then rebounds, moving the movable rod 7 back to its original position, stopping it from pressing the pressure sensor 8. The pressure sensor 8 no longer detects pressure and controls the electric slider 202 to continue closing the door 3. During this process, the goods will not compress the anti-pinch rubber strip 4, avoiding problems caused by prolonged compression of the anti-pinch rubber strip 4. In the latter part of the closing process, the electric push rod 5 is activated, moving the connecting plate 6 and its components, causing the movable rod 7 to retract between the two anti-pinch rubber strips 4. In the gap between the two anti-pinch rubber strips 4, the end of the anti-pinch rubber strip 4 is located outside the end of the movable rod 7. In the final stage of closing the door, some users will put their hands between the two doors 3 that are about to close and block the doors 3 with their hands to prevent them from closing. The movable rod 7 has already retracted into the gap between the two anti-pinch rubber strips 4, so that the user's hand will come into contact with the anti-pinch rubber strip 4. The anti-pinch rubber strip 4 comes into contact with the hand and is squeezed and deformed, triggering the sensor to open the door in the opposite direction, thereby preventing injury to the hand. After the anti-pinch rubber strip 4 is squeezed, its internal capacitive sensor is triggered, controlling the electric slider 202 to drive the two doors 3 to move in opposite directions and open, realizing the contact protection function. In use, when the user puts the goods against the edge of the door 3 to keep it in the normally open state, the movable rod 7 blocks the goods, avoiding the elastic decay and decrease in the sensitivity of the capacitive sensor caused by the goods squeezing the anti-pinch rubber strip 4 for a long time, which helps to ensure the sensitivity and reliability of the anti-pinch function.

[0024] It also includes baffles 203; two baffles 203 are rotatably connected to the movable rod 7 via an electric rotating shaft.

[0025] The surface of the baffle 203 is set to be smooth to reduce friction.

[0026] When handling goods, even after the goods rest against the movable rod 7, the protruding parts of the goods may still squeeze the anti-pinch rubber strip 4. Therefore, a baffle 203 is installed on the door body 3. The movable rod 7 and the baffle 203 work together to block the goods and prevent them from squeezing the anti-pinch rubber strip 4. In the latter half of the closing process, the electric rotating shaft on the movable rod 7 drives the two baffles 203 to rotate in opposite directions, thereby retracting the two baffles 203. Then, the electric push rod 5 drives the connecting plate 6 and its parts to move, so that the two baffles 203 move into the gap between the two anti-pinch rubber strips 4, that is, the end of the anti-pinch rubber strip 4 extends beyond the end of the baffle 203. In use, the movable rod 7 and the baffle 203 work together to block the goods and prevent the protruding parts of the goods from squeezing the anti-pinch rubber strip 4, which helps to improve the protection effect.

[0027] It also includes an elastic strip 204; an elastic strip 204 is fixedly attached to each anti-pinch rubber strip 4, and the elastic strip 204 blocks the gap between adjacent anti-pinch rubber strips 4.

[0028] The elastic strip 204 is designed as a hollow structure, making it easier to be squeezed and deformed.

[0029] After the movable rod 7 and the baffle 203 retract between the two anti-pinch rubber strips 4, a gap will form at the ends of the two anti-pinch rubber strips 4. When the user blocks the door with their hand, their fingers may get stuck in the gap between the anti-pinch rubber strips 4, the movable rod 7, and the baffle 203, resulting in low safety. Therefore, an elastic strip 204 is provided on the anti-pinch rubber strips 4. After the movable rod 7 and the baffle 203 retract between the two anti-pinch rubber strips 4, the elastic strip 204, which is initially in a compressed state, rebounds and seals the gap between the ends of the two anti-pinch rubber strips 4, preventing the user's fingers from getting stuck in the gap between the anti-pinch rubber strips 4, the movable rod 7, and the baffle 203, thus ensuring high safety. In use, after the movable rod 7 and the baffle 203 retract between the two anti-pinch rubber strips 4, the elastic strip 204 seals the gap between the ends of the two anti-pinch rubber strips 4, preventing the user's fingers from getting stuck in the gap between the anti-pinch rubber strips 4, the movable rod 7, and the baffle 203, thus ensuring high safety.

[0030] After the door 3 is opened, the end of the movable rod 7 needs to be moved to the outside of the gap between the two anti-pinch rubber strips 4 and then reset. At this time, the electric push rod 5 drives the connecting plate 6 and its parts to move, causing the movable rod 7 to move away from the door 3. This causes the end of the movable rod 7 to squeeze and pass through the two hollow elastic strips 204. However, the end of the movable rod 7 is relatively thick, which makes it easy for the process to get stuck. However, after setting baffles 203 on the movable rod 7 to block the goods, the two baffles 203 can be rotated relative to each other to form a sharp angle, such as... Figure 8As shown, when the end of the movable rod 7 needs to move to the outside of the gap between the two anti-pinch rubber strips 4, the electric push rod 5 drives the movable rod 7 away from the door body 3. The movable rod 7 drives the baffle 203 to move, so that the pointed baffle 203 squeezes and passes through the two elastic strips 204, and guides the end of the movable rod 7 through the two elastic strips 204, making the insertion and reset operation of the movable rod 7 smoother and avoiding jamming. In use, the baffle 203, which is used to block goods, is also used to guide the end of the movable rod 7 through the two elastic strips 204, making the insertion and reset operation of the movable rod 7 smoother and avoiding jamming.

[0031] Example 2, based on Example 1, such as Figure 7 As shown, the elastic strip 204 is made of wear-resistant rubber to improve its lifespan.

[0032] The contact points between the cover 1 and the door 3 are both designed as smooth surfaces to reduce frictional resistance.

[0033] Rollers are provided on the lower side of the door body 3, making it easier for the door body 3 to move on the guide rail 2.

[0034] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An elevator door with protective function, comprising a housing (1) and a guide rail (2) disposed below the housing (1); characterized in that, It also includes a door body (3); several door bodies (3) are slidably connected to the guide rail (2); several anti-pinch rubber strips (4) are provided on each door body (3); a capacitive sensor is provided inside the anti-pinch rubber strip (4); several electric push rods (5) are fixedly connected to each door body (3), and the extension and retraction direction of the electric push rods (5) is parallel to the sliding direction of the door body (3); a connecting plate (6) is slidably connected to each door body (3), and the connecting plate (6) is fixedly connected to the extension and retraction end of the corresponding electric push rod (5); a movable rod (7) is slidably connected to each connecting plate (6); several pressure sensors (8) are fixedly connected to each connecting plate (6); several springs (9) are fixedly connected to each connecting plate (6), and the springs (9) are fixedly connected to the corresponding movable rods (7); a drive assembly is connected to the cover (1), and the drive assembly is used to drive the door body (3) to move horizontally.

2. An elevator door with protective function according to claim 1, characterized in that, The drive assembly includes an electric slide rail (201) and an electric slider (202); the electric slide rail (201) is fixedly connected to the cover (1); a number of electric sliders (202) are slidably connected to the electric slide rail (201), and the electric sliders (202) are fixedly connected to the corresponding door body (3).

3. An elevator door with protective function according to claim 2, characterized in that, An infrared sensor is installed on the door (3).

4. An elevator door with protective function according to claim 3, characterized in that, It also includes baffles (203); several baffles (203) are rotatably connected to the movable rod (7) via an electric rotating shaft.

5. An elevator door with protective function according to claim 4, characterized in that, The surface of the baffle (203) is set to a smooth surface.

6. An elevator door with protective function according to claim 4, characterized in that, It also includes an elastic strip (204); an elastic strip (204) is fixedly attached to each anti-pinch rubber strip (4).

7. An elevator door with protective function according to claim 6, characterized in that, The elastic strip (204) is set as a hollow structure.

8. An elevator door with protective function according to claim 7, characterized in that, The elastic strip (204) is made of wear-resistant rubber.

9. An elevator door with protective function according to claim 8, characterized in that, The contact points between the cover (1) and the door (3) are both set to smooth surfaces.

10. An elevator door with protective function according to any one of claims 1-9, characterized in that, Rollers are provided on the lower side of the door (3).

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