Servo-driven infrared induction type automatic door unit
By using a servo motor and traction rope drive system and a fixed crossbar limit design, the wear problem of automatic doors during high-frequency opening is solved, achieving smooth opening and closing actions, extending equipment life, and improving safety and traffic efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING AILICHI AUTOMATIC DOOR TECHNOLOGY CO LTD
- Filing Date
- 2025-07-01
- Publication Date
- 2026-05-19
AI Technical Summary
When existing automatic doors are opened at high frequencies, the forward and reverse screw drive method leads to increased mechanical wear, affecting the lifespan and stability of the equipment. Furthermore, the unstable movement affects the user experience and safety.
The traditional positive and negative lead screw structure is replaced by a servo motor and traction rope drive system. Combined with the design of fixed crossbar limit and slider rotating wheel, the slider can move smoothly. The servo motor is flexibly transmitted through the traction rope.
Significantly reduces mechanical wear, ensures smooth and safe gate operation, extends equipment life, and improves traffic efficiency.
Smart Images
Figure CN224260142U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automatic door technology, specifically to a servo-driven infrared sensor automatic door unit. Background Technology
[0002] Automatic doors are electrically driven door devices widely used in various public places and buildings, such as shopping malls, hospitals, office buildings, and airports. Their main function is to automatically open and close for easy access. Compared to traditional manual doors, automatic doors offer greater convenience and security, effectively reducing human contact and improving traffic flow. Automatic doors are typically equipped with key components such as sensors, controllers, and drive mechanisms to ensure that the door opens and closes automatically without human intervention. Based on different working principles, automatic doors can be divided into several types, including sensor-operated, sliding, and rotary types. Among them, sensor-operated automatic doors are widely popular due to their high sensitivity and convenience.
[0003] Patent CN218991345U discloses an automatic door structure, including a housing and two gates, both located inside the housing. A horizontal plate is fixedly connected to the front of the housing, and an infrared sensor is fixedly mounted on the horizontal plate. A fixed cylinder is fixedly connected to the top of the housing, and both gates are located at the bottom of the fixed cylinder. A drive assembly is provided on the fixed cylinder, including a motor, a forward and reverse lead screw, and two sliders. This invention uses the infrared sensor to detect an approaching object and then transmits an electrical signal to the controller. The controller controls the motor to operate, which drives the forward and reverse lead screw to rotate. The lead screw drives the two sliders to move in opposite directions, thereby causing the two gates to move in opposite directions. Similarly, when the infrared sensor does not detect an object, the controller controls the motor to reverse, thereby causing the two gates to move towards each other. The structure is simple, the gate opening time is short, and the performance is good.
[0004] The existing technology described above uses a motor to drive forward and reverse lead screws to achieve relative or opposite movement of the two gates. However, when the automatic door opens frequently, using forward and reverse lead screws to drive the two sliders can easily lead to increased mechanical wear, affecting the service life and stability of the equipment. Furthermore, wear can cause uneven door movement, thus affecting user experience and safety. To overcome these problems, we propose a servo-driven infrared sensor automatic door unit, which provides smoother opening and closing actions. Simultaneously, this innovative design will significantly reduce wear rate, extend equipment life, and improve overall performance and reliability. Utility Model Content
[0005] The purpose of this invention is to provide a servo-driven infrared sensor-based automatic door operator to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] Servo-driven infrared sensor automatic door unit, including door frame, combined with Figure 1 , Figure 3 and Figure 4 As shown, fixed side doors are provided on both the left and right sides of the inner wall of the door frame. The rear of the fixed side doors provides space for the left and right movable doors to slide. A servo drive assembly is provided at the top of the inner wall of the door frame. The servo drive assembly includes a rectangular drive housing. An infrared sensor is provided on the front side of the rectangular drive housing to detect whether someone is approaching. The left and right movable doors are movably connected to the bottom of the rectangular drive housing. When someone needs to pass through the automatic door, the left and right movable doors slide synchronously. The left movable door slides to the left and the right movable door slides to the right.
[0008] The left movable door has a first slider at the top center and the right movable door has a second slider at the top center. The bottom of the rectangular drive box has a strip hole for the first and second sliders to pass through, so that the first and second sliders can enter the rectangular drive box. A fixed crossbar is provided between the left and right sides of the inner wall of the rectangular drive box. The first and second sliders are movably connected to the outside of the fixed crossbar, which limits the movement of the first and second sliders, so that the first and second sliders can only move left and right.
[0009] A left door servo drive unit for driving the first slider to move left and right is provided inside the rectangular drive box and near the rear side. A right door servo drive unit for driving the second slider to move left and right is provided inside the rectangular drive box and near the front side.
[0010] Preferred, such as Figure 1 As shown, mounting brackets are provided on both the left and right sides of the door frame, and a sliding groove is provided at the bottom of the inner wall of the door frame.
[0011] Preferred, combined Figure 2 and Figure 3 As shown, the bottom of both the left and right movable doors is provided with two pulleys, which support the left and right movable doors and reduce the resistance during movement. The pulleys roll in the groove, which is conducive to the left and right horizontal movement of the left and right movable doors.
[0012] Preferred, such as Figure 6 As shown, both the first and second sliders have circular holes on their sides for the fixed crossbar to pass through. The inner wall of the circular holes has multiple rectangular grooves arranged in a circular array. Rotating wheels are rotatably connected in the rectangular grooves. The rotating wheels roll on the outer wall of the fixed crossbar, which facilitates the movement of the first and second sliders on the outer wall of the fixed crossbar and reduces wear.
[0013] Preferred, such as Figure 5 As shown, the left door servo drive includes two first fixed vertical plates arranged symmetrically on the left and right. Each of the two first fixed vertical plates is equipped with a first servo motor on its rear side. The output shaft of the first servo motor passes through the rear side of the first fixed vertical plate and is coaxially connected to a first winding drum. Each of the two first winding drums is wound with a first traction rope. The two first servo motors work synchronously with the same speed and direction. For example, the shaft of the left first servo motor rotates clockwise to wind up the first traction rope on the left, and the shaft of the right first servo motor rotates clockwise to unwind the first traction rope on the right, thereby moving the first slider to the left and thus causing the left movable door to move to the left.
[0014] The first slider has two first connecting rings arranged symmetrically on the left and right sides. The two first traction ropes are respectively connected to the two first connecting rings, so that the first traction ropes can pull the first slider to move.
[0015] The right door servo drive includes two second fixed vertical plates arranged symmetrically on the left and right. A second servo motor is provided on the front side of each of the two second fixed vertical plates. The output shaft of the second servo motor passes through the front side of the second fixed vertical plate and is coaxially connected to a second winding drum. A second traction rope is wound on each of the two second winding drums. The two second servo motors work synchronously and have the same speed and direction. For example, the shaft of the left second servo motor rotates counterclockwise to unwind the second traction rope on the left, and the shaft of the right second servo motor rotates counterclockwise to wind the second traction rope on the right, thereby causing the second slider to move to the right, and thus causing the right movable door to move to the right.
[0016] The front side of the second slider is provided with two second connecting rings arranged symmetrically from left to right. The two second traction ropes are respectively connected to the two second connecting rings, so that the second traction ropes can pull the second slider to move.
[0017] Preferably, the inner wall of the rectangular drive housing is equipped with a controller. The infrared sensor, the first servo motor, and the second servo motor are electrically connected to the controller via wires. The infrared sensor transmits the detected signal to the controller via wires. The controller controls the two first servo motors to rotate clockwise and the two second servo motors to rotate counterclockwise, thereby moving the left movable door to the left and the right movable door to the right, thus opening the automatic door. After a person passes through the automatic door, the controller controls the two first servo motors to rotate counterclockwise and the two second servo motors to rotate clockwise, thereby moving the left movable door to the right and the right movable door to the left, thus closing the automatic door.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] 1. This servo-driven infrared sensor automatic door unit replaces the traditional positive and negative lead screw structure with a servo motor and traction rope drive system, completely avoiding the sliding friction between the lead screw and the slider. The high-precision control of the servo motor combined with the flexible transmission method of the traction rope effectively reduces rigid contact between mechanical parts, significantly reduces wear under long-term high-frequency use, and thus extends the overall life of the equipment.
[0020] 2. This servo-driven infrared sensor automatic door unit uses a fixed crossbar to limit and constrain the slider. In conjunction with the rotating wheel inside the slider rolling along the crossbar, it ensures that the sliding process of the door remains stable. The rolling friction between the rotating wheel and the fixed crossbar replaces the traditional sliding friction, which not only reduces resistance but also avoids movement jamming or deviation caused by wear, ensuring the smoothness and safety of the door's opening and closing action.
[0021] 3. This servo-driven infrared sensor automatic door unit uses dual servo motors to control the extension and retraction of the traction rope. Combined with the real-time signal processing of the controller, it can realize the rapid opening and closing of the door. It is suitable for places with high traffic and high opening and closing frequency, and greatly improves traffic efficiency. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;
[0023] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;
[0024] Figure 3 This is a partial structural schematic diagram of the present invention;
[0025] Figure 4 This is a schematic diagram of the assembly structure of the servo drive component, the left movable door, and the right movable door in this utility model;
[0026] Figure 5 This is a cross-sectional structural diagram of the servo drive component in this utility model;
[0027] Figure 6 This is a cross-sectional structural diagram of the first slider in this utility model;
[0028] In the diagram: 100, door frame; 101, slide rail; 110, mounting bracket; 200, fixed side door; 300, servo drive assembly; 310, rectangular drive housing; 311, strip hole; 320, infrared sensor; 330, controller; 340, left door servo drive component; 341, first fixed vertical plate; 342, first servo motor; 343, first winding drum; 344, first traction rope; 350, right door servo drive component; 351, second fixed vertical plate; 352, second servo motor; 353, second winding drum; 354, second traction rope; 360, fixed crossbar; 400, left movable door; 410, first slider; 411, first connecting ring; 500, right movable door; 510, second slider; 511, second connecting ring; 600, pulley; 700, round hole; 800, rectangular groove; 900, rotating wheel. Detailed Implementation
[0029] 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.
[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0031] Please see Figures 1-6 This utility model provides a technical solution:
[0032] Servo-driven infrared sensor automatic door unit, including door frame 100, combined with Figure 1 , Figure 3 and Figure 4As shown, fixed side doors 200 are provided on both the left and right sides of the inner wall of the door frame 100. The rear of the fixed side doors 200 provides space for the left movable door 400 and the right movable door 500 to slide. A servo drive assembly 300 is provided on the top of the inner wall of the door frame 100. The servo drive assembly 300 includes a rectangular drive housing 310. An infrared sensor 320 is provided on the front side of the rectangular drive housing 310 to detect whether someone is approaching. The left movable door 400 and the right movable door 500 are movably connected to the bottom of the rectangular drive housing 310. When someone needs to pass through the automatic door, the left movable door 400 and the right movable door 500 slide synchronously. The left movable door 400 slides to the left and the right movable door 500 slides to the right.
[0033] A first slider 410 is provided at the middle of the top of the left movable door 400, and a second slider 510 is provided at the middle of the top of the right movable door 500. A strip hole 311 is provided at the bottom of the rectangular drive housing 310 for the first slider 410 and the second slider 510 to pass through, so that the first slider 410 and the second slider 510 can enter the rectangular drive housing 310. A fixed crossbar 360 is provided between the left and right sides of the inner wall of the rectangular drive housing 310. The first slider 410 and the second slider 510 are movably connected to the outside of the fixed crossbar 360, which limits the first slider 410 and the second slider 510, so that the first slider 410 and the second slider 510 can only move left and right.
[0034] A left door servo drive 340 for driving the first slider 410 to move left and right is provided inside the rectangular drive housing 310 and near the rear side. A right door servo drive 350 for driving the second slider 510 to move left and right is provided inside the rectangular drive housing 310 and near the front side.
[0035] In this embodiment, as Figure 1 As shown, mounting brackets 110 are provided on both the left and right sides of the door frame 100, and a sliding groove 101 is provided at the bottom of the inner wall of the door frame 100.
[0036] Specifically, in combination Figure 2 and Figure 3 As shown, the bottom of both the left movable door 400 and the right movable door 500 is provided with two pulleys 600, which support the left movable door 400 and the right movable door 500 and reduce the resistance during movement. The pulleys 600 roll in the slide groove 101, which is conducive to the left and right horizontal movement of the left movable door 400 and the right movable door 500.
[0037] Furthermore, such as Figure 6As shown, the sides of the first slider 410 and the second slider 510 are provided with circular holes 700 for the fixed crossbar 360 to pass through. The inner wall of the circular holes 700 is provided with a plurality of rectangular grooves 800 arranged in a circular array. A rotating wheel 900 is rotatably connected in the rectangular grooves 800. The rotating wheel 900 rolls on the outer wall of the fixed crossbar 360, which is beneficial for the first slider 410 and the second slider 510 to move on the outer wall of the fixed crossbar 360 and reduce wear.
[0038] Furthermore, such as Figure 5 As shown, the left door servo drive 340 includes two first fixed vertical plates 341 arranged symmetrically on the left and right. A first servo motor 342 is provided on the rear side of each of the two first fixed vertical plates 341. The output shaft of the first servo motor 342 passes through the rear side of the first fixed vertical plate 341 and is coaxially connected to a first winding drum 343. A first traction rope 344 is wound on each of the two first winding drums 343. The two first servo motors 342 work synchronously and have the same speed and direction. For example, the shaft of the left first servo motor 342 rotates clockwise to wind the first traction rope 344 on the left, and the shaft of the right first servo motor 342 rotates clockwise to unwind the first traction rope 344 on the right, thereby causing the first slider 410 to move to the left, and thus causing the left movable door 400 to move to the left.
[0039] Two first connecting rings 411 arranged symmetrically on the rear side of the first slider 410 are provided. Two first traction ropes 344 are respectively connected to the two first connecting rings 411, so that the first traction ropes 344 can pull the first slider 410 to move.
[0040] The right door servo drive unit 350 includes two second fixed vertical plates 351 arranged symmetrically on the left and right. A second servo motor 352 is provided on the front side of each of the two second fixed vertical plates 351. The output shaft of the second servo motor 352 passes through the front side of the second fixed vertical plate 351 and is coaxially connected to a second winding drum 353. A second traction rope 354 is wound on each of the two second winding drums 353. The two second servo motors 352 work synchronously and have the same speed and direction. For example, the shaft of the left second servo motor 352 rotates counterclockwise to unwind the second traction rope 354 on the left, and the shaft of the right second servo motor 352 rotates counterclockwise to wind the second traction rope 354 on the right, thereby causing the second slider 510 to move to the right, and thus causing the right movable door 500 to move to the right.
[0041] The front side of the second slider 510 is provided with two second connecting rings 511 arranged symmetrically from left to right. Two second traction ropes 354 are respectively connected to the two second connecting rings 511, so that the second traction ropes 354 can pull the second slider 510 to move.
[0042] Furthermore, the inner wall of the rectangular drive housing 310 is equipped with a controller 330. The infrared sensor 320, the first servo motor 342, and the second servo motor 352 are electrically connected to the controller 330 through wires. The infrared sensor 320 transmits the detected signal to the controller 330 through the wires. The controller 330 controls the two first servo motors 342 to rotate clockwise and the two second servo motors 352 to rotate counterclockwise, thereby moving the left movable door 400 to the left and the right movable door 500 to the right, thus opening the automatic door. After a person passes through the automatic door, the controller 330 controls the two first servo motors 342 to rotate counterclockwise and the two second servo motors 352 to rotate clockwise, thereby moving the left movable door 400 to the right and the right movable door 500 to the left, thus closing the automatic door.
[0043] It should be noted that the infrared sensor 320, the first servo motor 342, the second servo motor 352, and the controller 330 in this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. The specific connection method should refer to the working sequence of each electrical component in the above working principle to complete the electrical connection. The detailed connection method is a well-known technology in the field. The above mainly introduces the working principle and process, and will not explain the electrical control.
[0044] In this embodiment, when a person approaches the door frame 100, the infrared sensor 320 detects the human signal and transmits it to the controller 330. The controller 330 controls two first servo motors 342 to rotate clockwise and two second servo motors 352 to rotate counterclockwise. The left first servo motor 342 drives the first winding drum 343 to wind the left first traction rope 344, while the right first servo motor 342 drives the first winding drum 343 to unwind the right first traction rope 344, thereby causing the first slider 410 to move to the left, and thus causing the left movable door 400 to move to the left. The left second servo motor 352 drives the second winding drum 353 to unwind the left second traction rope 354, while the right second servo motor 352 drives the second winding drum 353 to unwind the left second traction rope 354. Servo motor 352 drives second winding drum 353 to wind second traction rope 354 on the right, thereby moving second slider 510 to the right, and then causing right movable door 500 to move to the right, realizing the opening of automatic door; during the opening process, pulleys 600 at the bottom of left movable door 400 and right movable door 500 roll along slide groove 101 to support door body and reduce frictional resistance, while rotating wheels 900 on the sides of first slider 410 and second slider 510 roll on the outer wall of fixed crossbar 360 to reduce mechanical wear; after personnel pass through, infrared sensor 320 detects the disappearance of signal, controller 330 controls first servo motor 342 and second servo motor 352 to reverse, causing left movable door 400 and right movable door 500 to move in the opposite direction to the closed state, completing the complete opening and closing cycle of automatic door.
[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A servo-driven infrared sensor-based automatic door operator unit, including a door frame (100), characterized in that: Fixed side doors (200) are provided on both the left and right sides of the inner wall of the door frame (100). A servo drive assembly (300) is provided on the top of the inner wall of the door frame (100). The servo drive assembly (300) includes a rectangular drive housing (310). An infrared sensor (320) is provided on the front side of the rectangular drive housing (310). A left movable door (400) and a right movable door (500) are movably connected to the bottom of the rectangular drive housing (310). A first slider (410) is provided at the middle of the top of the left movable door (400), and a second slider (510) is provided at the middle of the top of the right movable door (500). The rectangular drive housing (310) The bottom of the rectangular drive housing (310) has a strip hole (311) through which the first slider (410) and the second slider (510) pass. A fixed crossbar (360) is provided between the left and right sides of the inner wall of the rectangular drive housing (310). The first slider (410) and the second slider (510) are movably connected to the outside of the fixed crossbar (360). A left door servo drive (340) for driving the first slider (410) to move left and right is provided inside the rectangular drive housing (310) and near the rear side. A right door servo drive (350) for driving the second slider (510) to move left and right is provided inside the rectangular drive housing (310) and near the front side.
2. The servo-driven infrared sensor automatic door operator unit according to claim 1, characterized in that: The door frame (100) is provided with mounting brackets (110) on both the left and right sides, and a sliding groove (101) is provided at the bottom of the inner wall of the door frame (100).
3. The servo-driven infrared sensor automatic door operator unit according to claim 2, characterized in that: The bottom of both the left movable door (400) and the right movable door (500) is provided with two pulleys (600), which roll in the groove (101).
4. The servo-driven infrared sensor automatic door operator unit according to claim 1, characterized in that: Both the first slider (410) and the second slider (510) have circular holes (700) on their sides for the fixed crossbar (360) to pass through. The inner wall of the circular hole (700) has a plurality of rectangular grooves (800) arranged in a ring array. A rotating wheel (900) is rotatably connected in the rectangular groove (800), and the rotating wheel (900) rolls on the outer wall of the fixed crossbar (360).
5. The servo-driven infrared sensor automatic door operator unit according to claim 1, characterized in that: The left door servo drive (340) includes two first fixed vertical plates (341) arranged symmetrically on the left and right. Each of the two first fixed vertical plates (341) is provided with a first servo motor (342). The output shaft of the first servo motor (342) passes through the rear side of the first fixed vertical plate (341) and is coaxially connected to a first winding drum (343). Each of the two first winding drums (343) is wound with a first traction rope (344).
6. The servo-driven infrared sensor automatic door unit according to claim 5, characterized in that: The rear side of the first slider (410) is provided with two first connecting rings (411) arranged symmetrically on the left and right, and the two first traction ropes (344) are respectively connected to the two first connecting rings (411).
7. The servo-driven infrared sensor automatic door unit according to claim 5, characterized in that: The right door servo drive (350) includes two second fixed vertical plates (351) arranged symmetrically on the left and right. A second servo motor (352) is provided on the front side of each of the two second fixed vertical plates (351). The output shaft of the second servo motor (352) passes through the front side of the second fixed vertical plate (351) and is coaxially connected to a second winding drum (353). A second traction rope (354) is wound on each of the two second winding drums (353).
8. The servo-driven infrared sensor automatic door unit according to claim 7, characterized in that: The front side of the second slider (510) is provided with two second connecting rings (511) arranged symmetrically on the left and right, and the two second traction ropes (354) are respectively connected to the two second connecting rings (511).
9. The servo-driven infrared sensor automatic door operator unit according to claim 7, characterized in that: The inner wall of the rectangular drive housing (310) is equipped with a controller (330), and the infrared sensor (320), the first servo motor (342), and the second servo motor (352) are electrically connected to the controller (330) through wires.