Folding door
By designing an automated folding door and using components such as hanging rails and rollers, the problem of inconvenience in using traditional doors in places with limited space has been solved, achieving efficient, stable, and airtight folding door functions suitable for various locations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING QUNSHENG BEIYI DOOR IND CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional hinged doors and sliding doors take up a lot of space when used in places with limited space, and existing folding doors cannot be used for extra-large door panels, resulting in low space utilization efficiency and inconvenience.
A folding door was designed, which uses components such as a hanging rail, hanging parts, hanging wheels, bolts, hinges, curved arms and motors to realize the automatic opening and closing of the door leaf. Guide grooves and brushes are set between the door frames to ensure stability and sealing.
It achieves smooth opening and closing within a limited space, improves space utilization, ensures accurate positioning and stable operation, features automated control, dust and noise prevention, good sealing, and extended service life, making it suitable for demanding environments.
Smart Images
Figure CN224549942U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of extra-large folding door technology, and more specifically, to folding doors. Background Technology
[0002] Doors are indispensable components in architectural spaces, playing a vital role in dividing spaces, ensuring privacy, and controlling ventilation and lighting. Traditional door types, such as hinged doors and sliding doors, have gradually revealed some limitations over long-term use.
[0003] Hinged doors require a significant amount of space to open. As the door panels open outwards or inwards, they occupy a certain amount of indoor or outdoor space. In places with limited space, such as small shops, warehouses, and narrow corridors, the use of hinged doors is greatly restricted, which may lead to low space utilization efficiency and affect the normal passage of people and goods. Existing folding doors are designed to slide and fold, but the width of the door panels may cause considerable resistance, and extra-large door panels cannot be folded.
[0004] To address the aforementioned issues, this application provides a folding door. Utility Model Content
[0005] The folding door provided in this application adopts the following technical solution: The folding door has a door frame on one side of the wall facing each other. A hanging rail is installed at the top of the door frames facing each other, with evenly distributed hanging brackets on the rail. Four door panels are installed between the door frames facing each other, arranged in pairs. Each pair of door panels has a hanging wheel at the top, located within the hanging rail. A latch is installed at the top of one side of each pair of hanging wheels facing each other. Symmetrical hinges are installed on one side of each pair of door panels facing each other. A curved arm is installed at the end of each door panel away from the latch, and a motor is installed at the end of each curved arm away from the door panel, with the motor connected to the wall. A guide groove is opened at the bottom of the door frames facing each other. Brushes are installed at the bottom of each pair of door panels, sliding within the guide groove. An electrical control box is installed on one side of the wall.
[0006] Furthermore, both sets of door panels are positioned between the hanging rail and the guide groove.
[0007] Furthermore, each of the aforementioned door panels can rotate relative to the other via hinges.
[0008] Furthermore, all the door frames are I-beam steel structures, and the outer walls of the door frames are all equipped with galvanized sheets.
[0009] Furthermore, both sets of door panels are provided with sealing elements between them.
[0010] Furthermore, a motor is provided on one side of the top of the door frame to drive the door leaf to start.
[0011] In summary, this application includes the following beneficial technical effects: This folding door, through its meticulously designed structure, advanced automated control, and high-quality material selection, achieves numerous benefits, including structural stability, smooth operation, precise positioning, flexible opening and closing, convenient operation, accurate guidance, dust and debris prevention, excellent sealing, energy saving and noise reduction, and durability. It provides users with a high-quality, high-performance folding door solution suitable for various locations with high requirements for door performance and ease of use. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the door leaf structure in this application; Figure 3 This is a schematic diagram of the motor structure of this application; Figure 4 This is a schematic diagram of the guide groove structure of this application.
[0013] Explanation of the labels in the diagram: 1. Wall; 2. Door frame; 3. Hanging rail; 4. Hanging parts; 5. Hanging rollers; 6. Bolt; 7. Door leaf; 8. Hinge; 9. Motor; 10. Crank arm; 11. Guide groove; 12. Brush; 13. Electrical control box. Detailed Implementation
[0014] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0015] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," 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 application 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 of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0016] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Example
[0017] This application discloses folding doors in its embodiments; please refer to [link / reference]. Figures 1-4Each wall 1 has a door frame 2 on one side facing each other. A hanging rail 3 is installed at the top of each door frame 2 facing each other. Evenly distributed hanging components 4 are installed on the hanging rail 3. Four door leaves 7 are installed between each door frame 2 facing each other, with two door leaves 7 forming a group. Each group of door leaves 7 has a hanging wheel 5 at its top, and the hanging wheels 5 are located within the hanging rail 3. A latch 6 is installed at the top of each side facing each group of hanging wheels 5. Each group of door leaves 7 has symmetrical hinges 8 on one side facing each other. A curved arm 10 is installed at the end of each door leaf 7 furthest from the latch 6. A motor 9 is installed at the end of each curved arm 10 furthest from the door leaf 7, and the motors 9 are all connected to the wall 1. Next, guide grooves 11 are provided at the bottom of opposite door frames 2, and brushes 12 are provided at the bottom of both sets of door leaves 7, and the brushes 12 slide within the guide grooves 11. An electrical control box 13 is provided on one side of the wall 1. Both sets of door leaves 7 are located between the hanging rail 3 and the guide groove 11. Each set of door leaves 7 can rotate relative to each other through hinges 8. The door frames 2 are all of I-beam structure, and the outer walls of the door frames 2 are all provided with galvanized plates. Both sets of door leaves 7 are provided with sealing elements. By setting door frames on opposite sides of the wall and installing hanging rails on the top of the door frames, with evenly distributed hanging components on the hanging rails, a stable basic structure is provided for the suspension and operation of the door leaves. Both sets of door panels are equipped with rollers at the top, located within the hanging rail. This design allows the door panels to slide smoothly along the rail during opening and closing, effectively reducing swaying and jamming, ensuring the smoothness and stability of the folding door's overall operation, and extending its service life. A latch is installed at the top on one side between the two sets of rollers. This design provides reliable positioning for the door panels in specific positions, ensuring accurate positioning when the door panels are closed or opened to a specific angle, preventing accidental movement due to external forces or their own weight, thus improving safety and convenience. Symmetrical hinges are installed between the opposing sets of door panels, allowing them to rotate relative to each other, achieving flexible opening and closing of the folding door. This design maximizes the opening of passageways within limited spaces, facilitating the entry and exit of people and goods, and is especially suitable for compact spaces, effectively improving space utilization. A curved arm is installed at the end of the door panels furthest from the latch, and the end of the curved arm furthest from the door panel is connected to a motor, which is connected to the wall. The motor is controlled by an electrical control box, enabling automated opening and closing of the folding door. Users no longer need to operate it manually; simple commands are all that's required, greatly improving convenience and efficiency. This is especially suitable for locations where frequent door opening and closing is necessary. Guide grooves are created at the bottom between opposite door frames, and brushes are installed at the bottom of both sets of door panels, sliding within these guide grooves. These guide grooves provide precise guidance for the bottom movement of the door panels, ensuring they maintain the correct trajectory and prevent deviation during operation.Meanwhile, the brush effectively prevents dust and debris from entering the guide groove, ensuring its cleanliness and reducing problems such as door leaf malfunction or damage caused by debris accumulation. This further improves the operational stability and reliability of the folding door. A seal is installed between the two sets of door leaves; when the folding door is closed, the seal effectively fills the gaps between the door leaves, preventing air, dust, and noise from entering the room and improving indoor airtightness. This not only helps maintain a clean and comfortable indoor environment but also contributes to energy conservation and noise reduction, lowering the energy consumption of indoor air conditioning and heating equipment and reducing the impact of external noise on the indoor environment. A motor is located on one side of the top of the door frame 2 to drive the door leaf 7.
[0018] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A folding door, characterized in that: Each wall (1) has a door frame (2) on one side facing each other. The top of each door frame (2) is equipped with a hanging rail (3). The hanging rail (3) is equipped with evenly distributed hanging parts (4). Each door frame (2) has four door leaves (7) facing each other, and the door leaves (7) are arranged in pairs. The top of each pair of door leaves (7) is equipped with a hanging wheel (5), and the hanging wheel (5) is located inside the hanging rail (3). The top of each pair of hanging wheels (5) on one side facing each other is equipped with a pin (6). Each pair of door leaves (7) on one side facing each other is equipped with a... The hinges (8) are symmetrical. The door leaf (7) is provided with a curved arm (10) on the side away from the latch (6). The curved arm (10) is provided with a motor (9) on the side away from the door leaf (7). The motor (9) is connected to the wall (1). The bottom of the door frame (2) is provided with a guide groove (11). The bottom of the two sets of door leaves (7) is provided with a brush (12). The brush (12) slides in the guide groove (11). An electrical control box (13) is provided on one side of the wall (1).
2. The folding door according to claim 1, characterized in that: Both sets of door panels (7) are located between the hanging rail (3) and the guide groove (11).
3. The folding door according to claim 1, characterized in that: The door panels (7) of the group are all rotated relative to each other by hinges (8).
4. The folding door according to claim 1, characterized in that: The door frames (2) are all I-beam steel structures, and the outer walls of the door frames (2) are all provided with galvanized plates.
5. The folding door according to claim 1, characterized in that: Both sets of door panels (7) are provided with sealing elements between each other.
6. The folding door according to claim 1, characterized in that: A motor is provided on one side of the top of the door frame (2) to drive the door leaf (7) to start.