A folding door convenient to open and close

Abstract

The utility model discloses a folding door of convenient opening and closing, which comprises a door frame and two folding leaves, one side of the folding leaves is hinged to the door frame, and the adjacent folding leaves are arranged in close contact; a pull rod is slidably connected to the outer side of the folding leaves, one end of the pull rod is hinged to the door frame, the middle part of the pull rod is drivingly connected to a winding unit, and the winding unit is drivingly connected to a pedal arranged at the inlet end of the door frame. The winding unit comprises a winding shaft, a winding assembly and a spring box, the winding assembly is composed of first and second winding wheels with different diameters, the pedal comprises a flat plate, a supporting plate and a rebound assembly, and the door leaf of the folding leaf is slidably connected to the door frame through a sliding shaft, a sliding disc and a sliding groove. When the folding door is opened, the pedal is stepped on to pull the first winding rope and drive the winding assembly, the short-stroke driving long-distance overturning is realized by using the wheel speed difference, the folding leaves are driven to open and close to both sides, and after the pedal is released, the winding spring and the spring drive each part to reset. The utility model adopts a pure mechanical design, reduces energy consumption and use cost, is stable in structure, convenient to operate, avoids component interference and prolongs the service life.

Description

Technical Field

[0001] This utility model relates to the field of door structure technology, and in particular to a folding door that is easy to open and close. Background Technology

[0002] Folding doors, as a space-saving door structure, are widely used in various scenarios such as shops, garages, factories, and homes. Their core advantage lies in the fact that when opened, the door panels can be folded to significantly reduce the space occupied and improve passage efficiency. With the continuous improvement of application requirements, the market has placed higher demands on the ease of opening and closing, energy consumption costs, and service life of folding doors.

[0003] Currently, folding doors on the market are mainly divided into two categories: electric drive and manual drive. Electric folding doors typically rely on motors, control systems, and transmission mechanisms to open and close. Although convenient to operate, they have significant drawbacks: Firstly, motor drive requires continuous power consumption, resulting in high energy costs over long-term use, and they cannot function properly in power outage scenarios, limiting their applicability. Secondly, the electric components have complex structures, including circuit boards, sensors, and other precision components, making them susceptible to malfunctions due to environmental humidity and dust, leading to high maintenance costs. Furthermore, the lifespan of electric components is generally shorter than that of mechanical structures, resulting in increased replacement frequency of the overall equipment and further increasing operating costs.

[0004] Manually driven folding doors are mostly opened and closed by directly pushing and pulling the door panels. Although they do not require energy, they are inconvenient to operate. For larger or heavier folding doors, pushing and pulling manually requires a lot of physical strength, which is especially unfriendly to the elderly, children, or people with mobility impairments. Although some manual folding doors are equipped with auxiliary levers, the levers have a long operating stroke, requiring manual pulling to complete the entire stroke. This results in low opening and closing efficiency and a lack of effective stroke limiting structures. Excessive pushing and pulling can easily cause deformation and damage to the door panel joints, affecting the lifespan of the door.

[0005] To solve the above technical problems, there is an urgent need for a folding door with a purely mechanical structure, convenient operation, low energy consumption and long service life. By optimizing the transmission structure design, a short-stroke drive can be used to achieve long-distance flipping, reducing the difficulty of operation, avoiding component interference, improving the stability and durability of the equipment, and meeting the needs of use in different scenarios. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model proposes a folding door that is easy to open and close.

[0007] To achieve the above objectives, this utility model provides the following solution: A convenient folding door includes a door frame and two folding panels. One side of each folding panel is hinged to the door frame, and adjacent folding panels are positioned facing each other and fitting together. A pull rod is slidably connected to the outer side of each folding panel. One end of the pull rod is hinged to the side wall of the door frame. A winding unit is drivenly connected to the middle of the pull rod, and a pedal is drivenly connected to the winding unit. The pedal is located at the entrance end of the door frame.

[0008] Preferably, the winding unit includes a winding shaft, with both ends of the winding shaft rotatably connected to the door frame; a winding assembly is fixedly connected to one end of the winding shaft, and a spring box is rotatably connected to the other end of the winding shaft; a coil spring is fixedly connected to the inner cavity of the spring box, and the coil spring is sleeved on the outside of the winding shaft with one end fixedly connected to the winding shaft; the winding assembly is drivenly connected to the pull rod.

[0009] Preferably, the winding assembly includes a first winding reel and a second winding reel, with a first winding rope wound around the outer side of the first winding reel and a second winding rope wound around the outer side of the second winding reel. One end of the first winding rope passes through the door frame and is fixedly connected to the pedal; one end of the second winding rope is fixedly connected to the middle of the pull rod.

[0010] Preferably, the diameter of the first reel is smaller than the diameter of the second reel.

[0011] Preferably, the pedal includes a flat plate, one end of which is hinged to a support plate. One end of the support plate abuts against a plurality of rebound components. Each rebound component includes a spring and a limiting block. The spring is sleeved on the outside of the limiting block. The bottom ends of the limiting block and the spring are respectively fixedly connected to the other end of the flat plate. The top end of the spring abuts against one end of the support plate. The top surface of one end of the support plate is fixedly connected to one end of the first coiled rope.

[0012] Preferably, the folding fan includes two door panels, which are hinged together. One side of one door panel is hinged to the side wall of the door frame. A sliding shaft is fixedly connected to the center of the top surface of the door panel, and a sliding plate is fixedly connected to the top of the sliding shaft. The sliding plate and the sliding shaft are slidably connected to the top surface of the door frame, respectively. The top surface of the door panel closest to the door frame is slidably connected to the pull rod.

[0013] Preferably, there is a gap between the pedal and the folding fan, and the pedal and the folding fan do not come into contact.

[0014] Compared with the prior art, the present invention has the following advantages and technical effects: This invention features a folding door frame. The folding of the door allows it to open and close to both sides. Simultaneously, a pull rod fixedly connected to the outer top of the folding door connects to a drive mechanism (pedal) via a rewind unit. The rewind unit, driven by the speed difference between the first and second reels, uses the short-distance movement of the pedal to drive the long-distance rotation of the folding door. This invention, through its purely mechanical design, reduces the energy consumption of electric drives and extends the lifespan of the mechanical structure, thus lowering the cost of use. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a side view of the three-dimensional structure of the present invention; Figure 2 A side-view three-dimensional structural diagram of the winding unit and folding fan; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a side view of the three-dimensional structure of the pedal.

[0016] Among them, 1. door frame; 2. pull rod; 3. roller; 4. spring box; 5. coil spring; 6. first roller; 7. second roller; 8. first coil rope; 9. second coil rope; 10. flat plate; 11. support plate; 12. spring; 13. limit block; 14. door leaf; 15. sliding shaft; 16. sliding plate. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be noted that all components in the technical solution of this application require necessary additional facilities for water supply, oil supply, power supply, and gas supply for driving and / or control. Unless otherwise stated, they are assumed to be used and equipped with existing technology and no special explanation is required.

[0019] It should be noted that, in order to make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] It should be noted that the fixed connection described in this utility model is one of the following: threaded connection, welding, riveting, interference fit connection and bonding; detachable connection means that the two are closed to each other or can be separated at any time; sliding connection means that the two slide against each other or slide against each other and cannot be separated; rotating connection means that the two rotate against each other through bearings or bushings and cannot be separated.

[0021] Depend on Figure 1-4 The folding door shown includes a door frame 1 and two folding panels. One side of each folding panel is hinged to the door frame 1, and adjacent folding panels are positioned facing each other and close together. A pull rod 2 is slidably connected to the outer side of each folding panel. One end of the pull rod 2 is hinged to the side wall of the door frame 1. A winding unit is driven to the middle of the pull rod 2, and a pedal is driven to the winding unit. The pedal is located at the inlet end of the door frame 1.

[0022] Further optimizing the design, the winding unit includes a reel 3, with both ends of the reel 3 rotatably connected to the door frame 1. A winding assembly is fixedly connected to one end of the reel 3, and a spring box 4 is rotatably connected to the other end of the reel 3. A coil spring 5 is fixedly connected to the inner cavity of the spring box 4, and the coil spring 5 is sleeved on the outside of the reel 3, with one end of the coil spring 5 fixedly connected to the reel 3. The winding assembly is connected to the pull rod 2 via a transmission mechanism. Utilizing the elasticity of the coil spring 5, the first winding rope 8 is always wound around the first winding wheel 6, facilitating repeated driving of the reel 3.

[0023] Further optimizing the design, the winding assembly includes a first winding wheel 6 and a second winding wheel 7. A first winding cable 8 is wound around the outside of the first winding wheel 6, and a second winding cable 9 is wound around the outside of the second winding wheel 7. One end of the first winding cable 8 passes through the door frame 1 and is fixedly connected to the pedal; one end of the second winding cable 9 is fixedly connected to the middle of the pull rod 2. The diameter of the first winding wheel 6 is smaller than the diameter of the second winding wheel 7. Furthermore, the first winding wheel 6 and the second winding wheel 7 are respectively fixedly connected to the roller 3. The first winding cable 8 drives the first winding wheel 6 to rotate under the pull of the pedal, thereby enabling the roller 3 to drive the second winding wheel 7 to rotate, thus winding up the second winding cable 9. The second winding cable 9 drives the pull rod 2 to pull one folding fan, causing both door panels 14 to fold, thereby opening the folding door.

[0024] Furthermore, the travel of the pedal is equal to the distance of the second winding rope 9 wound by the second winding wheel 7, and after the second winding wheel 7 wound the second winding rope 9 into place, the door leaf 14 located on one side of the door frame 1 is set close to the bottom of the door frame 1.

[0025] A further optimized design includes a pedal comprising a flat plate 10, with a support plate 11 hinged to one end. One end of the support plate 11 abuts against several spring-loaded components, each comprising a spring 12 and a limiting block 13. The spring 12 is sleeved on the outside of the limiting block 13. The bottom ends of the limiting block 13 and the spring 12 are fixedly connected to the other end of the flat plate 10, respectively. The top end of the spring 12 abuts against one end of the support plate 11. The top surface of one end of the support plate 11 is fixedly connected to one end of the first winding rope 8. The spring-loaded components can use the spring 12 to lift the support plate 11 to a certain height, and one end of the support plate 11 is hinged to the flat plate 11, with the support plate 11 tilted. The limiting block 13 can limit the downward movement of the support plate 11 after it has moved a certain distance, preventing excessive movement that could cause the folding door to fold excessively and damage.

[0026] The design is further optimized so that the folding fan includes two door panels 14, which are hinged together. One side of one door panel 14 is hinged to the side wall of the door frame 1. A sliding shaft 15 is fixedly connected to the center of the top surface of the door panel 14, and a sliding plate 16 is fixedly connected to the top of the sliding shaft 15. The sliding plate 16 and the sliding shaft 15 are slidably connected to the top surface of the door frame 1. The top surface of the door panel 14 closest to the door frame 1 is slidably connected to the pull rod 2. A transverse sliding groove is provided on the crossbeam of the top surface of the door frame 1. The sliding groove is a T-shaped groove, which is slidably connected to the sliding shaft 15 and the sliding plate 16, respectively. This allows the sliding shaft 15, the sliding plate 16, and the sliding groove to slide against each other, guiding the folding process of the folding fan.

[0027] A further optimized design incorporates a gap between the pedal and the folding fan, ensuring they do not come into contact. This prevents interference between the folding fan and the pedal during opening and closing, thus avoiding damage to the device.

[0028] Furthermore, the sliding connection between the pull rod 2 and the door leaf 14 is consistent with the connection process between the door leaf 14 and the crossbeam on the top surface of the door frame 1, which makes it easy for the pull rod 2 to pull the door leaf 14 to fold.

[0029] The working process of this embodiment is as follows: In the initial state of this utility model's convenient folding door, the two folding door panels 14 are in an unfolded and fitted state, closing the door frame 1. When it is necessary to open the folding door, the user steps on or uses a motor vehicle to run over the footplate 11. The footplate 11 rotates downward around the hinge point with the flat plate 10, compressing the spring 12 of the rebound assembly, and simultaneously pulling the first coiled rope 8.

[0030] The first winding cable 8 drives the first winding wheel 6 of the winding assembly to rotate. Since the first winding wheel 6 is fixedly connected to the shaft 3, the shaft 3 rotates synchronously and drives the second winding wheel 7 to rotate. Because the diameter of the first winding wheel 6 is smaller than that of the second winding wheel 7, a speed difference is formed between the two, enabling the pedal to move a short distance and drive the second winding wheel 7 to rotate a long distance. When the second winding wheel 7 rotates, it winds up the second winding cable 9. The second winding cable 9 pulls the pull rod 2, which slides against the top surface of the door leaf 14 near the door frame 1, causing the door leaf 14 to rotate around the hinge point with the door frame 1.

[0031] Simultaneously, the sliding shaft 15 and sliding plate 16 on the top surface of the door leaf 14 slide and guide along the T-shaped sliding groove on the top surface of the door frame 1. The two hinged door leaves 14 fold together, and the other folding leaf moves synchronously, with the two folding leaves unfolding to both sides of the door frame 1 respectively. When the support plate 11 descends to the point of contacting the limit block 13, it stops descending. At this time, the second coil 9 is wound into place, the door leaf 14 approaches the door frame 1, and the folding door is fully opened.

[0032] After releasing the pedal, spring 12 rebounds and pushes support plate 11 back to its original position. The roller 3 rotates in the opposite direction under the elastic force of spring 5 inside the spring box 4. The first winding rope 8 rewinds onto the first winding wheel 6, and the second winding rope 9 is released. Then, manually pushing the middle door leaf 14 causes the pull rod 2 to return to its original position with the door leaf 14, opening and closing the door frame 1, completing one opening and closing cycle. Throughout the process, the pedal and folding fan maintain a gap to avoid interference and damage, and the entire process relies on purely mechanical transmission, requiring no electrical energy.

[0033] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A folding door that is easy to open and close, characterized in that, Includes a door frame (1) and two folding fans. One side of the folding fan is hinged to the door frame (1), and adjacent folding fans are facing each other and fitted together. The outer side of the folding fan is slidably connected to a pull rod (2). One end of the pull rod (2) is hinged to the side wall of the door frame (1). The middle part of the pull rod (2) is connected to a winding unit. The winding unit is connected to a pedal. The pedal is located at the inlet end of the door frame (1).

2. The folding door with convenient opening and closing according to claim 1, characterized in that: The winding unit includes a winding shaft (3), with both ends of the winding shaft (3) rotatably connected to the door frame (1); a winding assembly is fixedly connected to one end of the winding shaft (3), and a spring box (4) is rotatably connected to the other end of the winding shaft (3). A coil spring (5) is fixedly connected to the inner cavity of the spring box (4), and the coil spring (5) is sleeved on the outside of the winding shaft (3) and one end of the coil spring (5) is fixedly connected to the winding shaft (3); the winding assembly is drivenly connected to the pull rod (2).

3. The folding door with convenient opening and closing according to claim 2, characterized in that: The winding assembly includes a first winding wheel (6) and a second winding wheel (7). A first winding rope (8) is wound around the outside of the first winding wheel (6), and a second winding rope (9) is wound around the outside of the second winding wheel (7). One end of the first winding rope (8) passes through the door frame (1) and is fixedly connected to the pedal; one end of the second winding rope (9) is fixedly connected to the middle of the pull rod (2).

4. The folding door with convenient opening and closing according to claim 3, characterized in that: The diameter of the first reel (6) is smaller than the diameter of the second reel (7).

5. The folding door with convenient opening and closing according to claim 3, characterized in that: The pedal includes a flat plate (10), one end of which is hinged to a support plate (11). One end of the support plate (11) abuts against a plurality of rebound components. The rebound components include a spring (12) and a limiting block (13). The spring (12) is sleeved on the outside of the limiting block (13). The bottom ends of the limiting block (13) and the spring (12) are respectively fixedly connected to the other end of the flat plate (10). The top end of the spring (12) abuts against one end of the support plate (11). The top surface of one end of the support plate (11) is fixedly connected to one end of the first coil (8).

6. The folding door with convenient opening and closing according to claim 1, characterized in that: The folding fan includes two door panels (14), which are hinged together. One side of one door panel (14) is hinged to the side wall of the door frame (1). A sliding shaft (15) is fixedly connected to the center of the top surface of the door panel (14), and a sliding plate (16) is fixedly connected to the top of the sliding shaft (15). The sliding plate (16) and the sliding shaft (15) are slidably connected to the top surface of the door frame (1). The top surface of the door panel (14) near the door frame (1) is slidably connected to the pull rod (2).

7. The folding door with convenient opening and closing according to claim 1, characterized in that: There is a gap between the pedal and the folding fan, and the pedal and the folding fan will not come into contact.

Images