Fireproof door with anti-pinch function
By introducing buffers and elastic protective plates into fire doors, the problem of fingers being pinched when closing too quickly is solved, thus improving safety.
Patent Information
- Application Number
- CN202422643592.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Fire doors can trap the user's hand during closing due to human intervention or excessive wind force, causing accidental injury.
The first buffer and the second buffer are used to slow down the rotation speed of the fire door by using the elastic force of the spring and the torsion spring, and provide additional protection through the protective plate made of silicone material.
Effectively reduce the rotation speed and impact force of fire doors, prevent accidental injuries to hands, and improve safety in use.
Smart Images

Figure CN223482542U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire door technology, and more specifically, to a fire door with anti-pinch function. Background Art
[0002] Fire doors are specially designed doors primarily used for fire-resistant partitioning within buildings. They can prevent the spread of flames for a certain period, buying valuable time for evacuation and firefighting. They can also effectively isolate fire and smoke, extending evacuation time and preventing people from being trapped in a fire.
[0003] During the use of fire doors, if the fire door closes too quickly due to human error or wind, it can easily trap the user's hand and cause accidental injury.
[0004] Therefore, we made improvements and proposed a fire door with anti-pinch function. Utility Model Content
[0005] The purpose of this utility model is to address the problem that, during the use of fire doors, the fire doors may close too quickly due to human error or wind, easily trapping the user's hand and causing accidental injury.
[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:
[0007] A fire door with anti-pinch function is proposed to improve the above-mentioned problems.
[0008] The application is as follows:
[0009] The fire door includes a door frame and a fire door body. There are two fire door bodies. A glass window is installed on the upper side of the outer surface of the fire door body. Door handles are installed on the front and rear sides of the fire door body. Three hinges are installed between the fire door body and the door frame. A first buffer member for slowing down the closing speed of the fire door body is fixedly connected to the rear side of the fire door body. A second buffer member is fixedly connected to the rear side of the door frame. A protective member is fixedly connected to one side of the outer surface of the fire door body.
[0010] The springs and torsion springs in the first and second buffer components greatly reduce the rotation speed and impact force of the fire door body. At the same time, because the protective plate is made of silicone, it has good elasticity and further protects the user's hands, preventing accidental injury.
[0011] As a preferred embodiment of the fire door with anti-pinch function provided by this utility model, the first buffer member includes a mounting plate, the mounting plate is fixedly connected to the rear side of the fire door body, a rotating shaft is fixedly connected to the upper surface of the mounting plate, a rotating plate is rotatably connected to the upper end of the rotating shaft, a sliding groove is provided on one side of the rear side of the door frame located on the rotating plate, a slider is slidably connected to the inner surface of the sliding groove, and one end of the rotating plate is rotatably connected to the slider through a rotating shaft.
[0012] As a preferred embodiment of the fire door with anti-pinch function provided by this utility model, a spring is fixedly connected to one side of the inner surface of the slide groove, and a slider two is fixedly connected to one end of the spring. The slider two is slidably arranged inside the slide groove.
[0013] As a preferred embodiment of the fire door with anti-pinch function provided by this utility model, a rubber block is fixedly connected to the outer surface of the second slider on the side close to the first slider.
[0014] As a preferred embodiment of the fire door with anti-pinch function provided by this utility model, the second buffer component includes a mounting block. Two mounting blocks are fixedly installed on the rear side of the door frame. A rotating plate is rotatably connected to the inner surface of the mounting block via a rotating shaft. A torsion spring is fixedly installed between the mounting block and the rotating plate.
[0015] As a preferred embodiment of the fire door with anti-pinch function provided by this utility model, a limiting plate is fixedly connected to one side of the outer surface of the mounting block.
[0016] As a preferred embodiment of the fire door with anti-pinch function provided by this utility model, the protective component includes a protective plate, and two mounting grooves are opened on one side of the outer surface of the fire door body, and the protective plate is fixedly installed inside the mounting groove.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] The springs and torsion springs in the first and second buffer components greatly reduce the rotation speed and impact force of the fire door body. At the same time, because the protective plate is made of silicone, it has good elasticity and further protects the user's hands, preventing accidental injury. Attached Figure Description
[0019] Figure 1 A first structural schematic diagram of a fire door with anti-pinch function provided in this application;
[0020] Figure 2A schematic diagram of the second structure of a fire door with anti-pinch function provided in this application;
[0021] Figure 3 An enlarged structural diagram of fire door A with anti-pinch function provided in this application;
[0022] Figure 4 A top cross-sectional view of the door frame of the fire door with anti-pinch function provided in this application;
[0023] Figure 5 A top cross-sectional schematic diagram of the rotating plate 2 of the fire door with anti-pinch function provided in this application;
[0024] Figure 6 An enlarged structural diagram of fire door B with anti-pinch function provided in this application.
[0025] The image shows:
[0026] 1. Door frame; 11. Fire door body; 12. Glass window; 13. Door handle; 14. Hinge; 2. Mounting plate; 21. Rotating shaft; 22. Rotating plate one; 23. Slide track; 24. Slider one; 25. Spring; 26. Slider two; 27. Rubber block; 3. Mounting block; 31. Rotating plate two; 32. Torsion spring; 33. Limiting plate; 4. Protective plate. DETAILED DESCRIPTION
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.
[0028] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0029] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.
[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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 on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0032] As described in the background art, during the use of fire doors, the fire doors may close too quickly due to human error or wind force, which can easily trap the user's hand and cause accidental injury.
[0033] To solve this technical problem, this utility model provides a fire door with anti-pinch function.
[0034] For details, please refer to Figure 1-6 A fire door with anti-pinch function specifically includes: a door frame 1 and a fire door body 11. There are two fire door bodies 11. A glass window 12 is installed on the upper side of the outer surface of the fire door body 11. Door handles 13 are installed on the front and rear sides of the fire door body 11. Three hinges 14 are installed between the fire door body 11 and the door frame 1. A first buffer member for slowing down the closing speed of the fire door body 11 is fixedly connected to the rear side of the fire door body 11. A second buffer member is fixedly connected to the rear side of the door frame 1. A protective member is fixedly connected to one side of the outer surface of the fire door body 11.
[0035] The rotation speed and impact force of the fire door body 11 are greatly reduced by the elastic force of the spring 25 and torsion spring 32 in the first and second buffer components. At the same time, because the protective plate 4 is made of silicone, it has good elasticity and further protects the user's hands to prevent accidental injury.
[0036] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0037] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.
[0039] Example 1
[0040] Please refer to Figure 1-6 A fire door with anti-pinch function includes a door frame 1 and a fire door body 11. There are two fire door bodies 11. A glass window 12 is installed on the upper side of the outer surface of the fire door body 11. Door handles 13 are installed on the front and rear sides of the fire door body 11. Three hinges 14 are installed between the fire door body 11 and the door frame 1. A first buffer member for slowing down the closing speed of the fire door body 11 is fixedly connected to the rear side of the fire door body 11. A second buffer member is fixedly connected to the rear side of the door frame 1. A protective member is fixedly connected to one side of the outer surface of the fire door body 11. The first buffer component includes a mounting plate 2, which is fixedly connected to the rear side of the fire door body 11. A rotating shaft 21 is fixedly connected to the upper surface of the mounting plate 2, and a rotating plate 22 is rotatably connected to the upper end of the rotating shaft 21. A groove 23 is provided on the rear side of the door frame 1 on one side of the rotating plate 22. A slider 24 is slidably connected to the inner surface of the groove 23. One end of the rotating plate 22 is rotatably connected to the slider 24 via a rotating shaft. A spring 25 is fixedly connected to one side of the inner surface of the groove 23, and a slider 26 is fixedly connected to one end of the spring 25. The slider 26 is slidably disposed inside the groove 23. A rubber block 27 is fixedly connected to the outer surface of the slider 26 near the slider 24. The second buffer component includes a mounting block 3, two of which are fixedly disposed on the rear side of the door frame 1. A rotating plate 31 is rotatably connected to the inner surface of the mounting block 3 via a rotating shaft. A torsion spring 32 is fixedly disposed between the mounting block 3 and the rotating plate 31. A limiting plate 33 is fixedly connected to one side of the outer surface of the mounting block 3. The protective component includes a protective plate 4. Two mounting grooves are opened on one side of the outer surface of the fire door body 11, and the protective plate 4 is fixedly installed inside the mounting grooves.
[0041] Implementation process: When the fire door body 11 is in the open state, the rotating plate 21 and the limiting plate 33 are in contact, and the slider 24 is located inside the slide groove 23 on the side away from the rubber block 27. When the fire door body 11 is closed, the mounting plate 2 and the rotating shaft 21 follow the fire door body 11 to rotate around the hinge 14. The rotation of the rotating shaft 21 causes the rotating plate 22 to rotate, and at the same time, the slider 24 moves closer to the rubber block 27 inside the slide groove 23. After rotating a certain angle, the rotating shaft 21 contacts the rotating plate 21, causing the rotating plate 21 to rotate around the rotating shaft fixedly set on the inner surface of the mounting block 3 and compress the torsion spring 32. The fire door body 11 reduces its rotation speed and impact force under the elastic force of the torsion spring 32. The fire door body 11 continues to rotate, causing the slider 1 24 to continue moving inside the slide groove 23, so that the slider 1 24 contacts the rubber block 27, pushing the rubber block 27 and the slider 26 to move synchronously inside the slide groove 23 and compress the spring 25. The fire door body 11 reduces its rotation speed and impact force under the elastic force of the spring 25. The setting of the rubber block 27 can eliminate the noise generated by the collision between the slider 1 24 and the slider 26. At the same time, because the protective plate 4 is made of silicone, it has good elasticity and further protects the user's hands.
[0042] Benefits of implementation: It slows down the rotation speed of the fire door body 11, protecting the user's hands.
[0043] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.
Claims
1. A fire door with anti-pinch function, comprising a door frame (1) and a fire door body (11), wherein two fire door bodies (11) are provided, a glass window (12) is installed on the upper side of the outer surface of the fire door body (11), a door handle (13) is installed on both the front and rear sides of the fire door body (11), and three hinges (14) are installed between the fire door body (11) and the door frame (1), characterized in that, The rear side of the fire door body (11) is fixedly connected to a first buffer member for slowing down the closing speed of the fire door body (11), the rear side of the door frame (1) is fixedly connected to a second buffer member, and a protective member is fixedly connected to one side of the outer surface of the fire door body (11); the first buffer member includes an installation plate (2), the installation plate (2) is fixedly connected to the rear side of the fire door body (11), the upper surface of the installation plate (2) is fixedly connected to a rotating shaft (21), the upper end of the rotating shaft (21) is rotatably connected to a rotating plate (22), the rear side of the door frame (1) is provided with a sliding groove (23) on one side of the rotating plate (22), the inner surface of the sliding groove (23) is slidably connected to a slider (24), and one end of the rotating plate (22) is rotatably connected to the slider (24) through a rotating shaft; A spring (25) is fixedly connected to one side of the inner surface of the slide groove (23), and a slider (26) is fixedly connected to one end of the spring (25). The slider (26) is slidably disposed inside the slide groove (23). The second buffer includes a mounting block (3), two mounting blocks (3) are fixedly installed on the rear side of the door frame (1), and a rotating plate (31) is rotatably connected to the inner surface of the mounting block (3) via a rotating shaft. A torsion spring (32) is fixedly installed between the mounting block (3) and the rotating plate (31).
2. A fire door with anti-pinch function according to claim 1, characterized in that, A rubber block (27) is fixedly connected to the outer surface of the second slider (26) on the side close to the first slider (24).
3. A fire door with anti-pinch function according to claim 2, characterized in that, A limiting plate (33) is fixedly connected to one side of the outer surface of the mounting block (3).
4. A fire door with anti-pinch function according to claim 3, characterized in that, The protective component includes a protective plate (4), and two mounting grooves are opened on one side of the outer surface of the fire door body (11), and the protective plate (4) is fixedly installed inside the mounting groove.