Anti-pinch safety sensing strip structure of elevator door

Abstract

The utility model discloses an elevator door anti-pinch safety induction strip structure which comprises an elevator door, an anti-pinch structure is arranged on one side of the elevator door, the anti-pinch structure comprises a moving rod, a microswitch and two universal balls, a groove for the moving rod to move is formed in one side of the elevator door, one side of the moving rod is connected with one side of the interior of the groove through a plurality of elastic pieces, and the other side of the moving rod is connected with one side of the interior of the groove through a plurality of elastic pieces. One side of the microswitch is fixedly connected with the side, close to the elastic piece, of the interior of the groove, the top and the bottom of the movable rod are each provided with an installation groove used for installing a universal ball, the top end and the bottom end of the inner side of the groove are each provided with a sliding groove matched with the outer side of the universal ball, and the side, away from the elastic piece, of the movable rod is provided with a flexible pad. The extrusion force of the elevator door on obstacles can be reduced, meanwhile, the movable rod moves in the groove, the microswitch can be triggered in time, and the use experience of a user is improved to a certain degree.

Description

Technical Field

[0001] This utility model belongs to the technical field of elevator door anti-pinch safety sensor strips, specifically an elevator door anti-pinch safety sensor strip structure. Background Technology

[0002] Elevator door anti-pinch safety sensor strips, also known as safety contact edges, are a type of elevator door anti-pinch safety device. They are usually installed on the edge of the elevator door. When an object touches the safety sensor strip, the door will stop closing and reopen. Currently, elevator door anti-pinch safety sensor strips are mainly divided into mechanical sensing type and photoelectric sensing type. Among them, the photoelectric sensing type uses infrared emitting and receiving devices to form one or more invisible infrared rays between the elevator doors. When an object blocks the light, the receiving device cannot receive a complete signal, thus judging that there is an obstacle and quickly transmitting the signal to the elevator control system to realize the anti-pinch function.

[0003] Mechanical sensing works by squeezing a sensor strip on one side of the elevator door when it encounters an obstacle during closing. This deformation causes the sensor strip to press against a microswitch inside the door, triggering it to reopen the door. However, this triggering method relies on direct contact between the sensor strip and the obstacle, leaving no buffer zone. Furthermore, the sensor strip hardens over time, reducing its elasticity and making it unable to promptly activate the microswitch, severely impacting the user experience. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides an elevator door anti-pinch safety sensor strip structure, which effectively solves the problem that the elevator door anti-pinch safety sensor strip cannot be triggered in time.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an elevator door anti-pinch safety sensor strip structure, including an elevator door, wherein an anti-pinch structure is provided on one side of the elevator door;

[0006] The anti-pinch structure includes a moving rod, a micro switch, and two omnidirectional balls. A groove is provided on one side of the elevator door for the moving rod to move. One side of the moving rod is connected to one side of the groove through multiple elastic elements. The micro switch is fixedly connected to the side of the groove adjacent to the elastic elements. The top and bottom of the moving rod are provided with mounting grooves for installing the omnidirectional balls. The top and bottom of the groove are provided with sliding grooves that match the outer side of the omnidirectional balls. A flexible pad is provided on the side of the moving rod away from the elastic elements.

[0007] Preferably, the flexible pad of the elevator door anti-pinch safety sensor strip structure is arc-shaped on the side away from the moving rod.

[0008] Preferably, a protective pad is provided on the side of the flexible pad away from the moving rod, and the protective pad and the flexible pad are connected by multiple interlocking structures.

[0009] Preferably, the engaging structure includes an engaging block, a limiting block, and a spring. One end of the engaging block is fixedly connected to the side of the protective pad adjacent to the flexible pad. The side of the flexible pad away from the moving rod is provided with a slot that matches the engaging block, and the inner side of the slot is provided with a groove that matches the shape of the limiting block. One end of the spring is fixedly connected to the top of the inner side of the groove, and the other end of the spring is fixedly connected to the top of the limiting block.

[0010] Preferably, the limiting block is inclined from the center to the bottom on both sides, and the top of the locking block is provided with a limiting groove that matches the shape of the bottom of the limiting block.

[0011] Preferably, the elastic element is a second spring, with both ends of the second spring fixedly connected to the side of the moving rod away from the flexible pad and the side inside the groove, respectively.

[0012] Preferably, a buffer sponge is provided between the flexible pad and the protective pad, and the surface of the buffer sponge is provided with multiple through holes for the card block to pass through.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. When the flexible pad on one side of the elevator door touches an obstacle, it will be squeezed and move towards the moving rod. Because one side of the moving rod is connected to the inside of the groove through an elastic element, the movement of the flexible pad towards the moving rod will push the moving rod into the groove, causing one side of the moving rod to touch the micro switch and reopen the elevator door. The movement of the moving rod into the groove will squeeze the elastic element. Through the above structure, the moving rod has a certain amount of movement space inside the groove, which can provide a certain buffer space for obstacles and reduce the squeezing force of the elevator door on obstacles. At the same time, the movement of the moving rod inside the groove can also trigger the micro switch in time, which improves the user experience to a certain extent.

[0015] 2. When the moving rod moves inside the groove, the universal balls at the top and bottom of the moving rod will roll along the sliding grooves at the top and bottom of the groove. The rolling of the universal balls reduces the friction between the outer side of the moving rod and the inner side of the groove, making the movement of the moving rod smoother and improving the timeliness of the moving rod touching the micro switch. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the structure of the elevator door anti-pinch safety sensor strip of this utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of the elevator door anti-pinch safety sensor strip of this utility model. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the protective pad and locking block structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the elevator door anti-pinch safety sensor strip of this utility model;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the movable rod and flexible pad of this utility model;

[0023] In the diagram: 1. Elevator door; 2. Moving rod; 3. Micro switch; 4. Universal ball; 5. Groove; 6. Mounting groove; 7. Slide groove; 8. Flexible pad; 9. Protective pad; 10. Locking block; 11. Limiting block; 12. Spring 1; 13. Slot; 14. Locking groove; 15. Limiting groove; 16. Spring 2; 17. Buffer sponge; 18. Through hole. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Depend on Figures 1-5As shown, this utility model includes an elevator door 1. One side of the elevator door 1 has an anti-pinch structure, which includes a moving rod 2, a micro switch 3, and two universal balls 4. One side of the elevator door 1 has a groove 5 for the moving rod 2 to move. One side of the moving rod 2 is connected to one side of the groove 5 via multiple elastic elements. One side of the micro switch 3 is fixedly connected to the side of the groove 5 adjacent to the elastic elements. The top and bottom of the moving rod 2 are provided with mounting grooves 6 for installing the universal balls 4, and the top and bottom of the inner side of the groove 5 are provided with sliding grooves 7 that match the outer side of the universal balls 4. A flexible pad 8 is provided on the side of the moving rod 2 away from the elastic elements. When the elevator door 1 is closed, the micro switch 3 can be installed in a circular motion. When the protective pad 9 on one side of the elevator door 1 touches an obstacle, the protective pad 9 will be squeezed and move towards the moving rod 2. Because one side of the moving rod 2 is connected to the inside of the groove 5 through the second spring 16, when the protective pad 9 moves towards the moving rod 2, it will push the moving rod 2 into the groove 5, so that one side of the moving rod 2 touches the micro switch 3, causing the elevator door 1 to reopen. When the moving rod 2 moves into the groove 5, it will squeeze the second spring 16. When the elevator door 1 reopens, under the elastic action of the second spring 16, it will drive the moving rod 2 and the protective pad 9 to return to their original positions, making it convenient for the next use.

[0026] The flexible pad 8 is arc-shaped on the side away from the moving rod 2. A protective pad 9 is provided on the side of the flexible pad 8 away from the moving rod 2. The protective pad 9 and the flexible pad 8 are connected by multiple locking structures. The locking structure includes a locking block 10, a limiting block 11, and a spring 12. One end of the locking block 10 is fixedly connected to the side of the protective pad 9 adjacent to the flexible pad 8. The side of the flexible pad 8 away from the moving rod 2 is provided with a slot 13 that matches the locking block 10. The inner side of the slot 13 is provided with a groove 14 that matches the shape of the limiting block 11. One end of the spring 12 is fixedly connected to the top of the inner side of the groove 14. The other end of the spring 12 is fixedly connected to the top of the limiting block 11. Because the side of the flexible pad 8 away from the moving rod 2 is arc-shaped and is provided with a protective pad 9, when the protective pad 9 comes into contact with an obstacle, the arc-shaped surface can reduce the squeezing force on the obstacle. The buffer sponge 17 provided between the protective pad 9 and the flexible pad 8 can further reduce the impact force on the obstacle.

[0027] The limiting block 11 is inclined from the center to the bottom on both sides. The top of the locking block 10 is provided with a limiting groove 15 that matches the shape of the bottom of the limiting block 11. The elastic element is a second spring 16. The two ends of the second spring 16 are fixedly connected to the side of the moving rod 2 away from the flexible pad 8 and the side inside the groove 5, respectively. A buffer sponge 17 is provided between the flexible pad 8 and the protective pad 9, and the surface of the buffer sponge 17 is provided with multiple through holes 18 for the locking block 10 to pass through.

[0028] Working principle:

[0029] When the protective pad 9 on one side of the elevator door 1 touches an obstacle, the protective pad 9 will be squeezed and move towards the moving rod 2. Because one side of the moving rod 2 is connected to the inside of the groove 5 through the second spring 16, when the protective pad 9 moves towards the moving rod 2, it will push the moving rod 2 into the groove 5, so that one side of the moving rod 2 touches the micro switch 3, causing the elevator door 1 to reopen. When the moving rod 2 moves into the groove 5, it will squeeze the second spring 16. When the elevator door 1 reopens, under the elastic action of the second spring 16, it will drive the moving rod 2 and the protective pad 9 to reset, making it convenient for the next use.

[0030] When the moving rod 2 moves inside the groove 5, the universal balls 4 set at the top and bottom of the moving rod 2 will roll along the sliding grooves 7 opened at the top and bottom of the inner side of the groove 5. The rolling of the universal balls 4 reduces the friction between the outer side of the moving rod 2 and the inner side of the groove 5, thereby making the movement of the moving rod 2 smoother and improving the timeliness of the moving rod 2 touching the micro switch 3.

[0031] Because the flexible pad 8 is arc-shaped on the side away from the moving rod 2 and is equipped with a protective pad 9, when the protective pad 9 comes into contact with the obstacle, the arc-shaped surface can reduce the squeezing force on the obstacle. The buffer sponge 17 between the protective pad 9 and the flexible pad 8 can further reduce the impact force on the obstacle.

[0032] When the protective pad 9 is severely worn after prolonged use, pulling the protective pad 9 will cause the locking block 10 to move away from the flexible pad 8. Because the limiting block 11 is inclined from the center to the bottom on both sides, and the bottom of the limiting block 11 is located inside the limiting groove 15 opened at the top of the locking block 10, when the locking block 10 moves, the inner side of the limiting groove 15 will squeeze the inclined surface at the bottom of the limiting block 11, so that the limiting block 11 moves along the locking groove 14 towards the spring 12. When the bottom of the limiting block 11 is disengaged from the limiting groove 15, the protective pad 9 can be removed from the side of the buffer sponge 17 and replaced. By the cooperation of the limiting block 11 and the limiting groove 15, the protective pad 9 can be more tightly fitted to the buffer sponge 17. By setting the buffer sponge 17, the impact force on the obstacle can be further reduced.

[0033] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A safety sensor strip structure for preventing pinching in elevator doors, comprising an elevator door (1), characterized in that: The elevator door (1) is equipped with an anti-pinch structure on one side; The anti-pinch structure includes a moving rod (2), a micro switch (3), and two universal balls (4). The elevator door (1) has a groove (5) for the moving rod (2) to move on one side. The moving rod (2) is connected to the inside of the groove (5) through multiple elastic elements. The micro switch (3) is fixedly connected to the inside of the groove (5) near the elastic element. The top and bottom of the moving rod (2) are provided with mounting grooves (6) for installing the universal balls (4). The top and bottom of the inside of the groove (5) are provided with sliding grooves (7) that match the outside of the universal balls (4). The side of the moving rod (2) away from the elastic element is provided with a flexible pad (8).

2. The elevator door anti-pinch safety sensor strip structure according to claim 1, characterized in that: The flexible pad (8) is arranged in an arc shape on the side away from the moving rod (2).

3. The elevator door anti-pinch safety sensor strip structure according to claim 1, characterized in that: The flexible pad (8) is provided with a protective pad (9) on the side away from the moving rod (2), and the protective pad (9) and the flexible pad (8) are connected by multiple interlocking structures.

4. The elevator door anti-pinch safety sensor strip structure according to claim 3, characterized in that: The locking structure includes a locking block (10), a limiting block (11), and a spring (12). One end of the locking block (10) is fixedly connected to the side of the protective pad (9) near the flexible pad (8). The side of the flexible pad (8) away from the moving rod (2) is provided with a slot (13) that matches the locking block (10), and the inner side of the slot (13) is provided with a groove (14) that matches the shape of the limiting block (11). One end of the spring (12) is fixedly connected to the top of the inner side of the groove (14), and the other end of the spring (12) is fixedly connected to the top of the limiting block (11).

5. The elevator door anti-pinch safety sensor strip structure according to claim 4, characterized in that: The limiting block (11) is inclined from the center to the bottom on both sides, and the locking block (10) has a limiting groove (15) at the top that matches the shape of the bottom of the limiting block (11).

6. The elevator door anti-pinch safety sensor strip structure according to claim 1, characterized in that: The elastic element is spring 2 (16), and the two ends of spring 2 (16) are fixedly connected to the side of the moving rod (2) away from the flexible pad (8) and the side inside the groove (5), respectively.

7. The elevator door anti-pinch safety sensor strip structure according to claim 1, characterized in that: A buffer sponge (17) is provided between the flexible pad (8) and the protective pad (9), and the surface of the buffer sponge (17) is provided with multiple through holes (18) for the card assembly (10) to pass through.

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