A swing-free sliding electric casement door device
Through the coordinated design of the main track, side track, drive unit and adaptive transmission arm, the swing amplitude problem of electric swing doors is solved, realizing smooth linear sliding of the door body, improving safety and synchronization, and enhancing the user experience.
Patent Information
- Application Number
- CN202522472591.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-21
AI Technical Summary
Existing electric swing doors have a forward swing motion during opening or closing, which leads to potential collision risks, especially in places such as hospitals and nursing homes. In addition, double doors have a complex structure and are prone to problems such as asynchrony and jamming.
The system employs a coordinated design of a main track, side track, drive unit, transmission belt, and adaptive transmission arm to achieve smooth linear sliding of the two doors. The spring function of the adaptive transmission arm adjusts the door speed and buffers impact force to eliminate swaying. The coordinated action of the drive unit and optical shaft group ensures synchronous movement of the doors.
This design enables smooth, linear sliding of the door, improving safety and comfort, avoiding collision risks, and enhancing the synchronization and lifespan of the double doors.
Smart Images

Figure CN224931551U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electric swing door technology, specifically relating to a non-swinging sliding electric swing door device. Background Technology
[0002] Electric swing doors are a type of door that uses a motor connected to the door body to automatically open and close. They are widely used in hospitals, nursing homes, commercial buildings, and public places where automatic access control is required. Their basic working principle is that a drive mechanism transmits power to the door body, causing it to move along a predetermined track, thus achieving the opening and closing action.
[0003] Existing electric swing door technology has certain shortcomings in practical applications. For example, while the existing patent (publication number CN216921801U) uses a connecting structure instead of traditional bearings to achieve door drive and support, the following problems still exist:
[0004] In the existing design, the door swings forward during opening or closing. This swing deviates outward as the door slides, potentially posing a collision risk to pedestrians, especially in places with a large number of people with mobility impairments, such as hospitals and nursing homes, where the safety hazard is significant.
[0005] Traditional electric swing doors typically use a single drive mechanism to control a single door leaf. When installing double doors, separate door panels and drive mechanisms must be installed, resulting in complex structures and cumbersome installation. Furthermore, after prolonged use, double doors are prone to problems such as asynchronous opening and closing, jamming, or malfunctions, affecting user experience and safety. Utility Model Content
[0006] In view of the technical problems mentioned in the background art, the purpose of this utility model is to provide a swing-free sliding electric swing door device to solve the technical problems mentioned in the background art.
[0007] To achieve the above objectives, the present invention provides the following technical solution: a swing-free sliding electric swing door device, comprising a main track and two side tracks, the two side tracks being arranged opposite each other on both sides of the main track, a door body being rotatably mounted on the lower end of each of the two side tracks, a drive unit being mounted on the upper side of each side track, a first drive optical shaft group being mounted on the side of each of the two side tracks, a second drive optical shaft group being mounted on the side of each of the main track, a transmission belt connecting the output end of the drive unit to the first drive optical shaft group and the second drive optical shaft group, a first adaptive transmission arm being movably connected between the first drive optical shaft group and the door body, and a second adaptive transmission arm being movably connected between the second drive optical shaft group and the door body.
[0008] This utility model has the following beneficial effects: The swing-free sliding electric swing door device provided by this utility model achieves smooth linear sliding of the two door panels during opening and closing through the coordinated design of the main track, side track, drive unit, transmission belt, first adaptive transmission arm, second adaptive transmission arm, and related auxiliary structures. This completely eliminates the forward swing phenomenon of traditional swing doors, improving safety and comfort. Through the coordinated action of the first and second adaptive transmission arms, the door panels slide linearly along the main and side tracks. The tension function of the springs in the adaptive transmission arms solves the problem of asynchronous door speeds on the main and side tracks. Simultaneously, it prevents the door from swinging forward during opening or closing, effectively ensuring the safety of passersby. The drive unit effectively transmits power to the door panels through the output wheel, transmission belt, and first and second drive optical shaft groups. Meanwhile, the driven wheel and the wheel mounting plate guide the transmission belt to ensure its tension and trajectory, guaranteeing smooth door sliding. The first linear bearing seat, the second linear bearing seat, the first spring component, and the second spring component at the ends of the first drive optical shaft assembly and the second drive optical shaft assembly enable the adaptive transmission arm to adaptively adjust the driving speed of the door body and buffer the impact force during the opening and closing process, so that the door body opens and closes smoothly, reduces vibration and noise, and extends the service life of the device. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.
[0010] Figure 2 This is a schematic diagram of the connection structure of the main track, side track, drive unit, first drive optical shaft group, second drive optical shaft group, and transmission belt of this utility model.
[0011] Figure 3 This is a schematic diagram of the connection structure of the drive unit, the first drive optical axis group, the second drive optical axis group, the transmission belt, the first adaptive transmission arm, and the second adaptive transmission arm of this utility model.
[0012] Figure 4 This is an exploded structural diagram of the drive unit, adaptive transmission arm, and first drive optical axis group of this utility model.
[0013] Figure 5 This is an exploded structural diagram of the second drive optical axis group and the rotating wheel mounting plate of this utility model.
[0014] Reference numerals: Main track 10; Side track 20; Door body 30; Drive unit 40; First drive optical shaft group 21; Second drive optical shaft group 11; Transmission belt 50; First adaptive transmission arm 60; Second adaptive transmission arm 70; Output wheel 41; First belt clamp 211; Second belt clamp 111; Wheel mounting plate 12; Driven wheel 13; First linear bearing seat 212; First spring component 213; Second linear bearing seat 112; Second spring component 113; First mounting base 214; Second mounting base 114; Unit mounting frame 22. Detailed Implementation
[0015] like Figures 1 to 5 As shown, a swing-free sliding electric swing door device includes a main track 10 and two side tracks 20, which are arranged opposite each other on both sides of the main track 10 to form a sliding channel for the door. Door bodies 30 are rotatably mounted on the lower ends of the two side rails 20. A drive unit 40 is mounted on the upper side of the side rail 20. A first drive optical shaft group 21 is mounted on the side of the two side rails 20, and a second drive optical shaft group 11 is mounted on the side of the main rail 10. A transmission belt 50 is connected between the output end of the drive unit 40 and the first drive optical shaft group 21 and the second drive optical shaft group 11. A first adaptive transmission arm 60 is movably connected between the first drive optical shaft group 21 and the door body 30, and a second adaptive transmission arm 70 is movably connected between the second drive optical shaft group 11 and the door body 30. During the opening process, the transmission belt 50 runs clockwise, the first adaptive transmission arm 60 drives the upper end of the door body 30 to slide in the opening direction, and at the same time, the second adaptive transmission arm 70 drives the lower end of the door body 30 to move in the same direction. The door body 30 slides open in a straight line, without producing the forward swing phenomenon of traditional swing doors, thus effectively avoiding collisions with people. During the closing process, the transmission belt 50 runs counterclockwise, and the first adaptive transmission arm 60 and the second adaptive transmission arm 70 move in opposite directions, causing the door 30 to slide in the closing direction, and the door 30 finally closes smoothly.
[0016] In practical implementation, the drive unit 40 consists of a motor, a controller, and a gearbox. The motor serves as the power source, providing driving energy. The controller receives signals for opening or closing the doors and outputs start / stop and steering control signals to the motor according to control logic. The gearbox amplifies and reduces the motor's output speed, thereby increasing output torque and ensuring stable operation of the drive unit 40 under different load conditions. Through the torque amplification effect of the gearbox, the drive unit 40 smoothly drives the transmission belt 50, synchronously driving the doors 30 below the side rails 20 to smoothly slide open and close, thus achieving coordinated control of the two doors. When the doors open, the controller precisely controls the speed and direction of the drive unit 40 by detecting displacement or angle signals. When the doors close, the controller also provides feedback adjustment to ensure that the two doors 30 remain synchronized during closing, preventing asynchronous opening and closing or jamming.
[0017] In practical implementation, the output end of the drive unit 40 is equipped with an output pulley 41, which is used to transmit the output torque of the gearbox to the transmission belt 50, thereby realizing the drive of the annular belt system. The upper end of the first drive shaft assembly 21 is equipped with a first belt clamp 211, and the upper end of the second drive shaft assembly 11 is equipped with a second belt clamp 111, which are used to form a reliable mechanical connection with the transmission belt 50. The output pulley 41 is connected to the annular segment of the transmission belt 50, so that the transmission belt 50 can obtain stable rotational power when the drive unit 40 is started. At the same time, the first belt clamp 211 and the second belt clamp 111 are respectively clamped to the side of the transmission belt 50, and the clamping and fixing structure ensures that the belt does not shift or loosen during operation. When the drive unit 40 drives the output wheel 41 to rotate, the transmission belt 50 will rotate accordingly, thereby driving the adaptive transmission arm connected to the first drive optical shaft group 21 and the second drive optical shaft group 11 to slide back and forth, so that the door 30 moves parallel to the direction of the main track 10 and the side track 20, realizing the smooth opening and closing of the door.
[0018] In practical implementation, symmetrical roller mounting plates 12 are installed on both sides of the main track 10. Driven rollers 13 are respectively installed at the lower end of each roller mounting plate 12. The outer surface of the driven roller 13 contacts the outer surface of the transmission belt 50, changing the running direction of the transmission belt 50 and providing tension guidance. During actual operation, the driven rollers 13 cooperate with the output rollers 41 of the drive unit 40 to form a closed loop transmission path for the transmission belt 50, ensuring that the transmission belt 50 smoothly circulates along a preset track under the drive of the drive unit 40. By adjusting the installation position and angle of the driven rollers 13, the transmission belt 50 can achieve two adjustable bends between 90 and 175 degrees in the path, thus completing multi-directional power transmission within a compact structural space.
[0019] In practical implementation, the end of the first drive optical shaft assembly 21 is connected to a first linear bearing seat 212, and a first spring component 213 is sleeved in the first linear bearing seat 212. The end of the second drive optical shaft assembly 11 is connected to a second linear bearing seat 112, and a second spring component 113 is sleeved in the second linear bearing seat 112. By setting a combination structure of linear bearing seat and spring component at the end of the optical shaft, the driving speed of the door can be adaptively adjusted and the impact force generated by the transmission arm during the driving process can be effectively buffered, reducing the vibration and noise when the door is opened and closed, thereby improving the stability and service life of the door. The first spring component 213 and the second spring component 113 can adjust the spring coefficient according to the weight of the door and the driving requirements, so that the door maintains smooth opening and closing during the opening and closing process, avoiding swaying and shaking caused by inertia, and achieving the effect of sway-free sliding opening and closing.
[0020] In practice, the first drive optical axis group 21 is connected to the first mounting base 214 at both ends, and the second drive optical axis group 11 is connected to the second mounting base 114 at both ends. By setting mounting base structures at both ends of the optical axis, the first drive optical axis group 21 and the second drive optical axis group 11 can be easily and securely installed on the side rail 20 and the main rail 10, thereby improving the overall installation accuracy and structural strength of the optical axis group.
[0021] In practice, the upper side of the side track 20 is provided with a unit mounting frame 22, and the drive unit 40 is installed on the unit mounting frame 22. By setting the unit mounting frame 22 on the upper side of the side track 20, the drive unit 40 can be firmly fixed above the door structure, which facilitates the direct transmission of power and maintenance operations.
[0022] In practice, during the opening process, the annular transmission belt 50 rotates clockwise, and the first adaptive transmission arm 60 located on the side track 20 of the door 30 moves backward with the belt, thereby applying a pushing force in the opening direction to the door 30. Simultaneously, two second adaptive transmission arms 70 located on the main track 10 of the door 30 are connected to the front and rear belt paths running in opposite directions, moving left and right respectively, to collaboratively drive the door 30 to slide smoothly in the opening direction. During this process, the spring components of the adaptive transmission arms gradually stretch from their normal state to their maximum length, and then gradually rebound as the door continues to move until the door 30 reaches the preset opening position, at which point the spring components return to their normal state, and the door remains stably in the open position. During the closing process, the annular transmission belt 50 rotates counterclockwise, and the adaptive transmission arm 60 located on the upper side track 20 of the door 30 moves forward, applying a driving force in the closing direction to the door 30. At this time, the two second adaptive transmission arms 70 located on the main track 10 slide in opposite directions, working together to push the door 30 back smoothly to the closing position. During this process, the spring component inside the adaptive transmission arm is stretched to its maximum length again from its normal state and then gradually retracts. When the door 30 is completely closed to the designated position, the spring component returns to its initial state, and the entire door completes a smooth closing action.
[0023] In summary, the swing-free sliding electric swing door device provided by this utility model, through the coordinated design of the main track 10, side track 20, drive unit 40, transmission belt 50, first adaptive transmission arm 60, second adaptive transmission arm 70, and related auxiliary structures, achieves smooth linear sliding of the two door panels 30 during opening and closing, completely eliminating the forward swing phenomenon of traditional swing doors and improving safety and comfort. Through the coordinated action of the first adaptive transmission arm 60 and the second adaptive transmission arm 70, the door panels 30 slide linearly along the main track 10 and side track 20, preventing forward swinging during opening or closing and effectively ensuring the safety of passersby. The drive unit 40 effectively transmits power to the door panels 30 through the output wheel 41, transmission belt 50, first drive optical shaft group 21, and second drive optical shaft group 11. Simultaneously, the driven wheel 13 and wheel mounting plate 12 guide the tension and running trajectory of the transmission belt 50, ensuring smooth sliding of the door panels 30. The first linear bearing seat 212, the second linear bearing seat 112, the first spring component 213, and the second spring component 113 at the ends of the first drive optical shaft group 21, the second drive optical shaft group 11 buffer the impact force of the adaptive transmission arms 60 and 70 during the opening and closing of the door, adaptively adjust the driving speed of the door body, and make the door body 30 open and close smoothly, reducing vibration and noise and extending the service life of the device.
Claims
1. A swing-free sliding electric swing door device, characterized in that, It includes a main track (10) and two side tracks (20). The two side tracks (20) are arranged opposite each other on both sides of the main track (10). Rotatable door bodies (30) are respectively installed at the lower ends of the two side tracks (20). A drive unit (40) is installed on the upper side of the side track (20). A first drive optical shaft group (21) is installed on the side of the two side tracks (20). A second drive optical shaft group (11) is installed on the side of the main track (10). A transmission belt (50) is connected between the output end of the drive unit (40) and the first drive optical shaft group (21) and the second drive optical shaft group (11). A first adaptive transmission arm (60) is movably connected between the first drive optical shaft group (21) and the door body (30). A second adaptive transmission arm (70) is movably connected between the second drive optical shaft group (11) and the door body (30).
2. The swing-free sliding electric swing door device according to claim 1, characterized in that, The output end of the drive unit (40) is provided with an output wheel (41), the upper end of the first drive optical shaft group (21) is provided with a first belt clamp (211), the upper end of the second drive optical shaft group (11) is provided with a second belt clamp (111), the output wheel (41) is connected to the ring segment of the transmission belt (50), and the first belt clamp (211) and the second belt clamp (111) are respectively clamped on the side of the transmission belt (50).
3. The swing-free sliding electric swing door device according to claim 2, characterized in that, The main track (10) is symmetrically equipped with wheel mounting plates (12) on both sides. Driven wheels (13) are respectively installed at the lower end of the wheel mounting plates (12). The outer surface of the driven wheel (13) is in contact with the outer surface of the transmission belt (50).
4. The swing-free sliding electric swing door device according to claim 3, characterized in that, The end of the first drive optical axis assembly (21) is connected to a first linear bearing seat (212), and a first spring component (213) is sleeved in the first linear bearing seat (212).
5. The swing-free sliding electric swing door device according to claim 4, characterized in that, The end of the second drive optical axis assembly (11) is connected to a second linear bearing seat (112), and a second spring component (113) is sleeved in the second linear bearing seat (112).
6. The swing-free sliding electric swing door device according to claim 5, characterized in that, The first drive optical axis group (21) is connected to a first mounting base (214) at both ends, and the second drive optical axis group (11) is connected to a second mounting base (114) at both ends.
7. The swing-free sliding electric swing door device according to claim 1, characterized in that, The upper part of the side track (20) is provided with a unit mounting bracket (22), and the drive unit (40) is mounted on the unit mounting bracket (22).
8. The swing-free sliding electric swing door device according to claim 1, characterized in that, The drive unit (40) consists of a motor, a controller and a gearbox.
