A door leaf movable structure

By using a door structure with a belt drive module and an electronic lock, the sliding door achieves efficient passage under normal conditions and rapid evacuation in emergencies, solving the problem of fixed passage width and improving passage and evacuation efficiency.

CN224452617UActive Publication Date: 2026-07-03NINGBO ZHIHUI DOORWAY SYST CONTROL TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO ZHIHUI DOORWAY SYST CONTROL TECH CO LTD
Filing Date
2025-08-07
Publication Date
2026-07-03

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  • Figure CN224452617U_ABST
    Figure CN224452617U_ABST
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Abstract

A movable door structure, assembled on a door body, includes a belt drive module, a movable door leaf, and a door frame. The belt drive module includes a belt, which connects to the movable door leaf via a belt clamp. The movable door leaf has a door hinge serving as its rotation center, and the door hinge is mounted on the door frame. The belt clamp is fixed to the door frame. Compared with the prior art, the movable door leaf of this application has a dual-mode operation. In daily use, the movable door leaf only performs translational movement relying on the belt drive module, meeting the need for efficient one-way passage. In an emergency, the movable door leaf can quickly rotate outward and open, instantly transforming the door body, originally intended for one-way passage, into a spacious evacuation passage.
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Description

Technical Field

[0001] This utility model belongs to the field of door structure technology, specifically relating to a movable door leaf structure. Background Technology

[0002] The sliding doors widely used in the market today primarily operate on the principle of translational motion. Guided by tracks or rails, these doors move linearly along a fixed horizontal direction, thus achieving the opening and closing actions. Due to their simple structure, convenient installation, and small space occupation, sliding doors are widely used in various commercial venues, public facilities, and residential areas, such as automatic doors in shopping malls, workshop doors in factories, and garage doors in residences. They are mainly used to separate areas and control the passage of people or goods.

[0003] However, existing sliding doors have a significant limitation: their passageway width remains fixed once installed and tested. In daily use, if pedestrian traffic suddenly increases within a short period, such as during large-scale promotional events in shopping malls or peak hours at subway stations, the fixed width of the sliding doors cannot meet the surge in demand, easily causing congestion at the entrance, reducing efficiency, and potentially even posing safety hazards. More seriously, in emergencies requiring urgent evacuation, such as fires or earthquakes, the limited opening size of the sliding doors severely hinders rapid evacuation, potentially prolonging evacuation time and increasing the risk of injury or death. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution.

[0005] A movable door leaf structure, assembled on a door body, includes a belt drive module, a movable leaf, and a door frame. The belt drive module includes a belt, which is connected to the movable leaf via a belt clamp. The movable leaf has a door hinge as its rotation center, and the door hinge is assembled on the door frame. The belt clamp is fixed to the door frame.

[0006] Furthermore, the belt drive module also includes a drive pulley, a driven pulley, and a belt clamp. The drive pulley is driven by a motor, and the belt is mounted on the drive pulley and the driven pulley. A track is provided on the door body, and pulleys that match the track are mounted on the belt clamp. The belt drive of the belt drive module enables the moving door to achieve stable and smooth movement.

[0007] Furthermore, a control lock is fitted on the gantry at the position corresponding to the free end of the moving fan. The control lock is used to lock the moving fan; in the locked state, the moving fan can only perform translational movement.

[0008] Furthermore, the control lock is an electronically controlled electric lock. The electric lock can respond and unlock in a very short time, allowing the fan to be pushed outward quickly.

[0009] Compared with existing technologies, this application has the following beneficial technical effects: it enables the moving fan to have a dual operating mode. In daily use, the moving fan relies on the belt drive module to perform only translational movement, meeting the need for efficient one-way passage. In an emergency, the moving fan can quickly rotate outward and open, instantly transforming the door, originally intended for one-way passage, into a spacious evacuation passage. Attached Figure Description

[0010] Figure 1 This is a 3D view of a one-way passage door in the closed state.

[0011] Figure 2 This is a 3D view of a one-way passage door in a half-open state.

[0012] Figure 3 This is a 3D view of a one-way passage door in its fully open state.

[0013] Figure 4 This is a structural diagram of the door panel assembly in Example 1.

[0014] Figure 5 A cross-sectional view of the drive assembly and the moving fan.

[0015] Figure 6 This is a structural diagram of Example 2.

[0016] Figure 7 This is a structural diagram of Example 3.

[0017] Figure 8 This is a flowchart of the workflow for a one-way passage door.

[0018] The following is an explanation of the reference numerals in the attached figures:

[0019] 100. Door body; 101. Track; 110. Door frame; 120. Electric lock; 130. Fisheye panoramic camera; 140. AI smart camera; 150. Voice broadcaster; 160. Anti-pinch light curtain; 170. Sensor radar; 180. Alarm intercom;

[0020] 200. Door leaf mechanism; 210. Door leaf assembly; 211. Moving leaf; 212. Fixed leaf; 220. Drive assembly; 221. Drive wheel; 222. Belt; 223. Driven wheel; 224. Belt clip; 225. Pulley; 226. Motor. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] In the following embodiments, the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this utility model, it should be understood that the terms such as center, longitudinal, transverse, length, width, thickness, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, and counterclockwise, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features shown. In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] refer to Figures 1 to 3 A one-way passageway door includes a door body 100, within which a passageway with an entrance and an exit is provided. The entrance is a door A, and the exit is a door B. Both doors A and B are door leaf mechanisms 200, each including a door leaf assembly 210 and a drive assembly 220. The door leaf assembly 210 has two sets, including a fixed leaf 212 and a movable leaf 211. The door leaf mechanism 200 is arranged with the movable leaf 211 in the middle and the fixed leaves 212 on both sides. A door frame 110 is mounted on the top of the fixed leaf 212 and connected to the drive assembly 220. Both the fixed leaf 212 and the movable leaf 211 have a door hinge serving as the center of rotation. The door hinge of the fixed leaf 212 is mounted on the door body 100, and the door hinge of the movable leaf 211 is mounted on the door frame 110. During normal use, the drive assembly 220 drives the movable fan 211 to move towards the fixed fan 212, and the door mechanism 200 is in a half-open state. In case of emergency evacuation, the drive assembly 220 first drives the movable fan 211 to move towards the fixed fan 212, and then the fixed fan 212 and the movable fan 211 rotate together to open, and the door mechanism 200 is in a fully open state, forming a fully open evacuation passage, which greatly shortens the evacuation preparation time and improves the efficiency of emergency escape.

[0025] Example 1

[0026] As one embodiment of a one-way passage door, refer to Figure 4 and Figure 5The drive assembly 220 includes two belt drive modules corresponding to the door panel assembly 210. Each belt drive module includes a drive pulley 221, a belt 222, a driven pulley 223, and a belt clamp 224. The drive pulley 221 is driven by a motor 226. The belt 222 is mounted on the drive pulley 221 and the driven pulley 223. The belt clamp 224 is mounted on the door frame 110 and fixedly connected to the belt 222. A track 101 is provided on the door body 100, and pulleys 225 that cooperate with the track 101 are mounted on the belt clamp 224.

[0027] To ensure the synchronicity of the opening and closing of the two sets of door leaf assemblies 210, the two sets of belt drive modules are driven by the same motor 226. Specifically, the two sets of drive pulleys 221 are coaxially mounted on the output shaft of the motor 226. With the drive pulley 221 and the driven pulley 223 as the boundary, the belt 222 is divided into an upper belt and a lower belt. The belt clip 224 of one set of door leaf assemblies 210 is fixed to the upper belt of the corresponding belt 222, and the belt clip 224 of the other set of door leaf assemblies 210 is fixed to the lower belt of the corresponding belt 222.

[0028] Example 2

[0029] As one embodiment of a one-way passage door, refer to Figure 6 The door mechanisms 200 at the entrance and exit face the same direction, and in the fully open state, the door assemblies 210 all open towards the exit side. Compared to a design where all door mechanisms 200 open outwards, this embodiment can prevent the door at the entrance from obstructing pedestrian traffic when fully open.

[0030] Example 3

[0031] As one embodiment of a one-way passage door, refer to Figure 7 Each of the gantry 110 and the door 100 is equipped with a control lock at the free end of the moving fan 211 and the free end of the fixed fan 212, respectively. These control locks are electronically controlled locks 120, used to automatically lock and unlock the door 100, ensuring that the door 100 is locked in non-emergency situations and can be quickly opened for evacuation in emergencies. A fisheye panoramic camera 130 and an AI smart camera 140 are installed at the top of the passageway to comprehensively monitor the flow of people within the passageway and perform intelligent analysis using AI technology. In addition, a voice announcer 150 is installed at the top of the passageway to provide voice prompts to people within the passageway.

[0032] Furthermore, anti-pinch light curtains 160 are installed at both the entrance and exit. These light curtains can monitor the opening and closing area of ​​the door 100 in real time, effectively preventing people or objects from being pinched during the closing process of the door 100, thus ensuring passage safety. A sensor radar 170 is also installed at the exit to detect the activity of people at the exit, so as to intelligently control the opening and closing of the door 100 and improve passage efficiency.

[0033] Furthermore, an alarm intercom 180 is installed on the side wall of the passage so that in case of emergency, personnel in the passage can use the device to communicate with the outside world, report dangers in a timely manner, and seek help.

[0034] refer to Figure 8 The working principle of a one-way passage door is as follows:

[0035] I. Normal Working Mode

[0036] 1. Standby state: When no one passes through, door A (door leaf mechanism 200 at the entrance) is in the normally open state, and door B (door leaf mechanism 200 at the exit) is in the normally closed state. The entire system remains in standby, waiting for personnel to arrive and trigger the workflow.

[0037] 2. Personnel Entry Detection and Response: The system activates when personnel enter the radar sensing range at Gate A. The anti-pinch light curtain 160, in conjunction with the radar, monitors personnel movement. Once personnel are detected entering, Gate A closes immediately. During the closing process, the anti-pinch light curtain 160 at the entrance senses in real time. If a person or object is caught, Gate A will immediately stop closing and reopen to ensure safe passage. Simultaneously, the fisheye panoramic camera 130 and the AI ​​intelligent camera are activated to perform comprehensive monitoring and intelligent analysis of the passage, such as crowd density monitoring and abnormal behavior recognition.

[0038] 3. Passage Control: After Gate A closes, Gate B opens, allowing personnel to exit smoothly. The 170-inch sensor radar at the exit closely monitors pedestrian flow in the exit area. Based on real-time data, Gate B intelligently adjusts its opening and closing timing to ensure continuous and efficient passage. If any personnel or objects are left in the lobby, the AI ​​smart camera and indoor floor light curtain can accurately detect them. Gate A will remain closed and trigger an audible and visual alarm until the abnormal situation is resolved.

[0039] II. Emergency Evacuation Mode

[0040] 1. Fire alarm signal triggering: In case of fire or other emergency, the fire alarm signal is immediately transmitted to the control system of the one-way door.

[0041] 2. Automatic unlocking and full opening of evacuation passage: Upon receiving a fire alarm signal, the electric locks 120 installed on the moving door 211 and the fixed door 212 automatically unlock, and the locked state of the door 100 is released. Passengers can easily push all the door panels (including the two moving doors 211 in the middle and the fixed doors 212 on both sides) outward, so that the entire passage is fully open, which greatly shortens the evacuation preparation time and improves the efficiency of emergency escape.

[0042] The scope of protection of this utility model includes, but is not limited to, the above embodiments. The scope of protection of this utility model is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art shall fall within the scope of protection of this utility model.

Claims

1. A movable door leaf structure, assembled on a door body (100), comprising a belt drive module and a movable leaf (211), wherein the belt drive module comprises a belt (222), the belt (222) being connected to the movable leaf (211) via a belt clip (224), characterized in that, It also includes a gantry (110), a movable fan (211) having a door hinge as the center of rotation, the door hinge being mounted on the gantry (110); and a clip (224) fixed on the gantry (110).

2. A door leaf moving structure according to claim 1, characterized in that The belt drive module also includes a drive wheel (221), a driven wheel (223) and a belt clamp (224). The drive wheel (221) is driven by a motor (226), and the belt (222) is mounted on the drive wheel (221) and the driven wheel (223). A track (101) is provided on the door body (100), and a pulley (225) that matches the track (101) is mounted on the belt clamp (224).

3. A door leaf moving structure according to claim 1, characterized in that The gantry (110) is equipped with a control lock at the position corresponding to the free end of the moving fan (211).

4. A door leaf moving structure according to claim 3, characterized in that The control lock is an electronically controlled electric lock (120).