An automatic closing shutter structure
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUHAI ZHENGQING ARCHITECTURAL SURVEY & DESIGN CONSULTING CO LTD
- Filing Date
- 2025-07-24
- Publication Date
- 2026-06-19
AI Technical Summary
The doors of existing power distribution rooms cannot simultaneously meet the requirements of ventilation and airtightness in case of fire, which may cause fire extinguishing gases to escape in the event of a fire.
Design an automatic closing louvered door structure, including a fixed door panel and a movable door panel. Under normal conditions, a hollow section is left for ventilation. An operating mechanism detects the smoke concentration and drives the movable door panel to move down and block the hollow section in case of fire, forming a sealed area.
It achieves ventilation and heat dissipation under normal conditions, and seals off to prevent the release of fire extinguishing gases during a fire, thus avoiding the problem that users can only choose one method to use.
Smart Images

Figure CN224379712U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of door bodies, and in particular to an automatic closing louver door structure. Background Technology
[0002] Substations include high-voltage distribution rooms, transformer rooms, low-voltage distribution rooms, and other equipment rooms. These electrical devices all generate heat. To dissipate this heat quickly, the doors leading to the outside should ideally be hollow, allowing for ventilation. However, if a fire breaks out in these rooms, it is usually extinguished using a gas extinguishing system. This requires the doors to be airtight to prevent the extinguishing gas from escaping. Currently, the choice is between louvered doors and airtight doors; there is no perfect solution. Utility Model Content
[0003] To address the aforementioned issues, this technical solution provides an automatic closing louver door structure.
[0004] To achieve the above objectives, the technical solution is as follows:
[0005] An automatic closing louver door structure includes;
[0006] Main body of the door;
[0007] The main body of the door is provided with a fixed door panel and a movable door panel. Under normal conditions, the fixed door panel and the movable door panel correspond one to one, leaving a hollow part for air circulation.
[0008] An operating mechanism is electrically connected to a sensor for detecting smoke concentration. The operating mechanism is also connected to the movable door panel. When the sensor detects that the ambient smoke is higher than a preset value, it drives the movable door panel to move down to seal the hollow part and form a seal.
[0009] In some embodiments, the operating mechanism includes;
[0010] A lever, which is rotatably mounted inside the door body via a fulcrum, has a first abutment portion at its end;
[0011] A connecting rod having a second abutting part that mates with the first abutting part, the connecting rod being connected to the movable door panel;
[0012] An electromagnet, in magnetic cooperation with the lever, has one end of its coil connected to the positive terminal of a power supply via an inductor, and the other end connected to the negative terminal of the power supply.
[0013] In some embodiments, the first abutting portion is vertically disposed on one end of the lever, and the second abutting portion is vertically disposed on one end of the connecting rod.
[0014] In some embodiments, the end face of the first abutment portion is a guide slope, and the end face of the second abutment portion is a guide slope.
[0015] In some embodiments, the connecting rod is provided with a reset handle.
[0016] In some embodiments, the main body of the door is provided with a guide rail for the connecting rod to slide along.
[0017] The beneficial effects of this application are:
[0018] This application integrates the movable door panel and the fixed door panel into one unit. Under normal conditions, the movable door panel and the fixed door panel are opposite each other, and the hollow part left can be ventilated and dissipated. When the sensor detects a fire, the movable door panel is driven to move down through the operating mechanism to block the hollow part and prevent the fire extinguishing gas from being discharged, thereby realizing multiple functions and avoiding the need for users to choose only one function. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.
[0020] Figure 1 This is a schematic diagram of the door structure according to an embodiment of the present utility model;
[0021] Figure 2 This is a schematic diagram illustrating the operation of the movable door according to an embodiment of this utility model;
[0022] Figure 3 This is a schematic diagram of the movable door structure according to an embodiment of the present utility model;
[0023] Figure 4 This is a schematic diagram of the operating mechanism of an embodiment of the present utility model.
[0024] 1-Main body of the door; 2-Fixed door panel; 3-Moving door panel; 4-Hollow part; 5-Sensor; 6-Lever; 7-Fulcrum; 8-First abutment part; 9-Connecting rod; 10-Second abutment part; 11-Electromagnet; 12-Reset handle. Detailed Implementation
[0025] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0026] Please refer to Figure 1-4 As shown, an automatic closing louver door structure includes:
[0027] Main body of the door 1;
[0028] The main body 1 of the door is provided with a fixed door panel 2 and a movable door panel 3. Under normal conditions, the fixed door panel 2 and the movable door panel 3 correspond one-to-one, leaving a hollow part 4 for air circulation.
[0029] The operating mechanism is electrically connected to a sensor 5 for detecting smoke concentration. The operating mechanism is also connected to the movable door panel 3. When the sensor 5 detects that the ambient smoke is higher than a preset value, it drives the movable door panel 3 to move down to seal the hollow part 4 and form a seal.
[0030] This application integrates the movable door panel and the fixed door panel into one unit. Under normal conditions, the movable door panel and the fixed door panel are opposite each other, and the hollow part left can be ventilated and dissipated. When the sensor detects a fire, the movable door panel is driven to move down through the operating mechanism to block the hollow part and prevent the fire extinguishing gas from being discharged, thereby realizing multiple functions and avoiding the need for users to choose only one function.
[0031] Reference Figure 4 The operating mechanism includes;
[0032] The lever 6 is made of metal and is rotatably mounted inside the door body 1 via a fulcrum 7. The end of the lever 6 is provided with a first abutment part 8.
[0033] The connecting rod 9 has a second abutting part 10 that cooperates with the first abutting part 8, and the connecting rod 9 is connected to the movable door panel 3;
[0034] Electromagnet 11 is magnetically coupled with lever 6. One end of the coil of electromagnet 11 is connected to the positive terminal of the power supply through inductor 5, and the other end of the coil is connected to the negative terminal of the power supply.
[0035] Under normal conditions, the lever is placed vertically, and the connecting rod is hooked at the end to make the movable door panel and the fixed door panel face each other. In this state, the hollow part is left for ventilation. When the sensor (smoke and temperature sensor) detects that the current environment is a fire, the corresponding switch will be turned on, the power supply will supply power to the coil, and the electromagnet will generate magnetic force, which will cause the upper end of the lever to be attracted and flipped. The connecting rod will contact the hook and move down under its own weight to seal the hollow part, forming a seal and preventing the fire extinguishing gas from being discharged.
[0036] In this embodiment, the first abutting part 8 is vertically disposed on one end of the lever 6, and the second abutting part 10 is vertically disposed on one end of the connecting rod 9. The two components can be well joined by using the mutually perpendicular abutting parts.
[0037] In this embodiment, the end face of the first abutment portion 8 is a guide slope, and the end face of the second abutment portion 10 is a guide slope, which plays a guiding role during lifting and makes it easier to lift.
[0038] In this embodiment, the connecting rod 9 is provided with a reset handle 12. When the fire is extinguished, the electromagnet loses its magnetic force, and then the user lifts it up through the handle to break the rod and restore it to its original state.
[0039] In this embodiment, the main body 1 of the door is provided with a guide rail for the connecting rod 9 to slide.
[0040] The above description is only a preferred embodiment of this application and is not intended to limit the scope of implementation of this application. Any other embodiments whose principles and basic structures are the same as or similar to those of this application are within the protection scope of this application.
Claims
1. An automatic closure shutter structure, characterized by, include; Main body of the door (1); The main body of the door (1) is provided with a fixed door panel (2) and a movable door panel (3). Under normal conditions, the fixed door panel (2) and the movable door panel (3) correspond one-to-one, so as to leave a hollow part (4) for air circulation. The operating mechanism is electrically connected to a sensor (5) for detecting smoke concentration. The operating mechanism is also connected to the movable door panel (3). When the sensor (5) detects that the ambient smoke is higher than a preset value, it drives the movable door panel (3) to move down to seal the hollow part (4) to form a seal.
2. An automatic closing shutter door structure according to claim 1, characterized in that: The operating mechanism includes; A lever (6) is rotatably mounted inside the main body (1) of the door via a fulcrum (7), and the end of the lever (6) is provided with a first abutment part (8); A connecting rod (9) is provided with a second abutting part (10) that cooperates with the first abutting part (8), and the connecting rod (9) is connected to the movable door panel (3); An electromagnet (11) is magnetically coupled with the lever (6). One end of the coil of the electromagnet (11) is connected to the positive terminal of the power supply through an inductor (5), and the other end of the coil is connected to the negative terminal of the power supply.
3. The automatic closing louver door structure according to claim 2, characterized in that: The first abutting part (8) is vertically disposed on one end of the lever (6), and the second abutting part (10) is vertically disposed on one end of the connecting rod (9).
4. The automatic closing louver door structure according to claim 3, characterized in that: The end face of the first abutting part (8) is a guide slope, and the end face of the second abutting part (10) is a guide slope.
5. The automatic closing louvered door structure according to claim 4, characterized in that: The connecting rod (9) is equipped with a reset handle (12).
6. The automatic closing louver door structure according to claim 4, characterized in that: The main body (1) of the door is provided with a guide rail for the connecting rod (9) to slide.