Clearance object falling prevention assembly for car elevator
By designing anti-gap-falling-object components in the elevator car and using a motor-driven shielding belt to prevent items from falling, the problem of items falling through the gaps in the elevator doors is solved, improving the safety and operating efficiency of the elevator.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-04-07
AI Technical Summary
In existing elevator cars, items can easily fall through the gap between the car door and the floor door, causing the elevator equipment to jam, be damaged, or stop operating, affecting safety and operational efficiency.
Design a component for preventing objects from falling into the gap of an elevator car, including a main shaft, a mounting bracket, a motor, and a blocking strip. The motor drives the main shaft to rotate, thereby placing the blocking strip in the gap of the elevator door to prevent objects from falling. The sliding performance of the door is optimized through a roller and slide rail structure.
It effectively prevents items from falling, reduces the risk of elevator jamming and shutdown, improves the safety and efficiency of elevator operation, reduces frictional resistance, and ensures the normal operation of elevator equipment.
Smart Images
Figure CN224091427U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of special equipment technology, specifically to a component for preventing objects from falling through gaps in elevator cars. Background Technology
[0002] As an indispensable vertical transportation tool in modern buildings, elevators improve people's lives and work efficiency, but they also face some safety hazards. The safety performance of elevators is directly related to passenger safety and the normal operation of the equipment; therefore, ensuring the safety and reliability of all elevator components is crucial. In elevator design, the fit and sealing of the car door and floor doors are among the most important factors affecting elevator safety. The gap design between the car door and floor door in traditional elevators typically prioritizes smooth opening and closing and preventing items from getting stuck. Therefore, it is inevitable that small items, such as mobile phones, keys, and loose change, can easily fall through these gaps.
[0003] If an object falls through the gap between the doors, it may enter the guide rail system at the bottom of the elevator or the elevator shaft, causing the elevator equipment to jam, be damaged, or even stop operating, affecting the normal operation of the elevator and causing inconvenience and safety hazards to users. Utility Model Content
[0004] To effectively prevent objects from falling through the gap between the car door and the floor door without affecting the normal operation of the elevator, and to ensure the safety and stability of the elevator, this utility model provides a car elevator anti-gap falling object component, including a main shaft, a mounting bracket, a motor, and a main shaft with a rotation axis parallel to the sliding direction of the car door at the bottom of the opening and closing surface. A mounting bracket is provided on the bottom outer surface of the main shaft, and a blocking strip for blocking the gap between the car door and the floor door is connected to the mounting bracket via a coil spring shaft. The other end of the blocking strip is fixedly connected to the mounting bracket of the car door on the other side. A motor for driving the main shaft to rotate is provided at the bottom of the opening and closing surface of the car door, and the motor is electrically connected to the door opening program.
[0005] In a preferred embodiment, the main shaft is a torsion spring shaft, and the direction of the torque of the torsion spring shaft is such that the mounting bracket is rotated downwards until it is completely within the range of the bottom surface of the car door.
[0006] In a preferred embodiment, the outer end face of the mounting bracket is provided with a rounded transition to reduce snagging and scratching with floor doors.
[0007] In a preferred embodiment, the outer end face of the mounting bracket is provided with a rotating wheel for improving the sliding efficiency of the car door, and the rotation axis of the rotating wheel is perpendicular to the extension direction of the mounting bracket.
[0008] In a preferred embodiment, a sliding groove is provided on the bottom outer surface of the main shaft, and a slide rail is provided on the upper surface of the mounting bracket. The slide rail can slide along the sliding groove within a set range. A sliding elastic element is provided between the slide rail and the sliding groove, and the elastic force of the sliding elastic element is directed towards the direction of pushing the mounting bracket toward the floor door.
[0009] In a preferred embodiment, the output shaft of the motor is equipped with a drive gear, and the main shaft is provided with a driven gear that meshes with the drive gear for transmission; the motor is a servo motor.
[0010] In a preferred embodiment, the mounting bracket is made of 6063 aluminum alloy.
[0011] Compared with the prior art, this utility model provides a component for preventing objects from falling through gaps in elevator cars, which has the following beneficial effects:
[0012] By placing protective strips in the elevator door gaps, small objects can be effectively prevented from falling through the gap between the car door and the floor door. This reduces the risk of elevator jamming or stopping due to items falling into the elevator shaft or guide rail system, ensuring the normal operation of the elevator equipment. The rollers installed on the outer end face of the mounting bracket effectively reduce friction between the car door and the floor door, making the car door slide more smoothly and improving elevator operating efficiency. Furthermore, the design of the rollers and guide rails enhances the smoothness of the car door opening and closing, reducing unnecessary resistance during elevator operation. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0014] Figure 2 This is a schematic diagram of the cooperation structure between the slide rail and the main shaft.
[0015] In the diagram: 1. Car door; 2. Main shaft; 3. Motor; 4. Mounting bracket; 5. Rounded corner transition; 6. Rotary wheel; 7. Slide rail; 8. Driving gear; 9. Driven gear; 10. Blinding strip; 11. Sliding elastic element. Detailed Implementation
[0016] 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.
[0017] Example
[0018] The following is combined with Figures 1 to 2This application introduces a car elevator anti-gap falling object assembly, including a main shaft 2, a mounting bracket 4, a motor 3, and a main shaft 2 with a rotation axis parallel to the sliding direction of the car door 1 at the bottom of the opening and closing surface. The mounting bracket 4 is provided on the bottom outer surface of the main shaft 2, and a blocking strip 10 for blocking the gap between the car door 1 and the floor door is connected to the mounting bracket 4 through a coil spring shaft. The other end of the blocking strip 10 is fixedly connected to the mounting bracket 4 of the car door 1 on the other side. The motor 3 for driving the main shaft 2 to rotate is provided at the bottom of the opening and closing surface of the car door 1, and the motor 3 is electrically connected to the door opening program of the car door 1.
[0019] In a preferred embodiment, the main shaft 2 is a torsion spring shaft. The torque direction of the torsion spring shaft is such that the mounting bracket 4 is rotated downwards until it is completely within the range of the bottom surface of the car door 1. In the event of a power outage, the mounting bracket 4 can also be rotated downwards until it is completely within the bottom surface of the car door 1. At this time, the entire device is completely within the vertical projection of the elevator car door 1, and will not interfere with the up and down operation of the elevator. A preload can also be added to reduce play and reduce noise and abnormal sounds.
[0020] In a preferred embodiment, the outer end face of the mounting bracket 4 is provided with a rounded transition 5 to reduce snagging and scratching with the floor door.
[0021] In a preferred embodiment, the outer end face of the mounting bracket 4 is provided with a rotating wheel 6 for improving the sliding efficiency of the car door 1. The rotation axis of the rotating wheel 6 is perpendicular to the extension direction of the mounting bracket 4. The design of the rotating wheel 6 improves the smoothness of opening and closing of the car door 1 and reduces unnecessary resistance during elevator operation.
[0022] Reference Figure 2 In a preferred embodiment, the main shaft 2 has a sliding groove on its bottom outer surface, and the mounting bracket 4 has a slide rail 7 on its upper surface. The slide rail 7 can slide along the sliding groove within a set range. A sliding elastic element 11 is provided between the slide rail 7 and the sliding groove. The elastic force of the sliding elastic element 11 is directed towards the floor door. The sliding elastic element 11 can be a helical spring, which applies a force to the mounting bracket 4 in the direction of the floor door, thereby increasing a dynamic elastic compensation for avoidance. When facing different distances between the car door 1 and the floor door, it can also be effectively blocked by the shielding strip 10.
[0023] In a preferred embodiment, the output shaft of the motor 3 is equipped with a drive gear 8, and the main shaft 2 is provided with a driven gear 9 that meshes with the drive gear 8. The motor 3 is a servo motor 3. Compared with belt drive or chain drive, gear drive is more precise and quieter, which is more conducive to achieving precise adjustment in conjunction with the servo motor 3.
[0024] In a preferred embodiment, the mounting bracket 4 is made of 6063 aluminum alloy, which ensures the durability and stability of the component, reduces maintenance costs due to component wear or failure, and extends the service life of the elevator system.
[0025] See Figure 1 When the elevator is running normally up and down, the direction of the torque of the torsion spring shaft is to rotate the mounting bracket 4 downwards until it is completely within the range of the bottom surface of the car door 1. At this time, the entire device is completely within the vertical projection of the elevator car door 1 and will not interfere with the up and down operation of the elevator. When the elevator reaches the set floor, the car door 1 and the floor door open at the same time. The motor 3 and the opening program of the car door 1 are electrically connected. At this time, the motor 3 will receive a signal and rotate through the cooperation of the driving gear 8 and the driven gear 9 to rotate the mounting bracket 4 to a position perpendicular to the car door 1. As the car door 1 slowly opens, the shielding strip 10 is pulled out from the mounting bracket 4 to form a shielding barrier between the car door 1 and the floor door.
[0026] When the car door 1 and the floor door close simultaneously, the motor 3 receives a signal and rotates through the cooperation of the drive gear 8 and the driven gear 9, rotating the mounting bracket 4 to a position completely within the area under the car door 1. As the car door 1 slowly closes, the shielding strip 10 is completely retracted from the coil spring shaft on the mounting bracket 4.
[0027] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.
Claims
1. A component for preventing objects from falling through gaps in an elevator car, characterized in that, The system includes a car door (1), a main shaft (2), a mounting bracket (4), and a motor (3). The bottom of the opening and closing surface of the car door (1) is provided with a main shaft (2) whose rotation axis is parallel to the sliding direction of the car door (1). The bottom outer surface of the main shaft (2) is provided with a mounting bracket (4). A shielding strip (10) for shielding the gap between the car door (1) and the floor door is connected to the mounting bracket (4) of the car door (1) on the mounting bracket (4) through a coil spring shaft. The other end of the shielding strip (10) is fixedly connected to the mounting bracket (4) of the car door (1) on the other side. The bottom of the opening and closing surface of the car door (1) is provided with a motor (3) for driving the main shaft (2) to rotate. The motor (3) is electrically connected to the opening program of the car door (1).
2. The anti-gap-falling-object assembly for a car elevator according to claim 1, characterized in that: The main shaft (2) is a torsion spring shaft, and the direction of the torque of the torsion spring shaft is to rotate the mounting bracket (4) downwards until it is completely within the range of the bottom surface of the car door (1).
3. The anti-gap-falling object assembly for a car elevator according to claim 1, characterized in that: The mounting bracket (4) has a rounded transition (5) on its outer end face to reduce snagging and scratching with the floor door.
4. The anti-gap-falling object assembly for a car elevator according to claim 1, characterized in that: The outer end face of the mounting bracket (4) is provided with a rotating wheel (6) for improving the sliding efficiency of the car door (1), and the rotation axis of the rotating wheel (6) is perpendicular to the extension direction of the mounting bracket (4).
5. The anti-gap-falling-object assembly for a car elevator according to claim 1, characterized in that: The main shaft (2) has a sliding groove on its bottom outer surface and a slide rail (7) on its upper surface. The slide rail (7) can slide along the sliding groove within a set range. A sliding elastic element (11) is provided between the slide rail (7) and the sliding groove. The elastic force of the sliding elastic element (11) is in the direction of pushing the mounting frame (4) toward the floor door.
6. The anti-gap-falling object assembly for a car elevator according to claim 1, characterized in that: The output shaft of the motor (3) is equipped with a drive gear (8), and the main shaft (2) is provided with a driven gear (9) that meshes with the drive gear (8). The motor (3) is a servo motor (3).
7. The anti-gap-falling-object assembly for a car elevator according to claim 1, characterized in that: The mounting bracket (4) is made of 6063 aluminum alloy.