Polyurethane mute sliding door
Through the innovative design of polyurethane sliding plate and side sealing plate structure, the impact force is converted into elastic force by using climbing wheels and torsion springs to buffer collisions and ensure complete closure, solving the problems of noise and incomplete closure of sliding doors, and improving quietness and usability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI HUXINYUAN TECHNOLOGY CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-05
AI Technical Summary
Existing sliding doors often cause noise and incomplete closure due to users closing them carelessly, resulting in collisions and friction between the door panel and the frame. This necessitates a second closing action, leading to poor usability.
It adopts a polyurethane sliding plate and side sealing plate structure, combined with climbing wheels, torsion springs and limit frame design. The climbing wheels climb up the limit frame to convert the impact force into elasticity, buffer the collision and reduce the rebound force, and ensure that the door panel is completely closed.
It reduces noise when closing, improves the quietness and smoothness of the sliding door, avoids incomplete closing, and enhances the user experience.
Smart Images

Figure CN224200496U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sliding door technology, and in particular to a polyurethane silent sliding door. Background Technology
[0002] Sliding doors are a common type of door in homes, referring to doors that can be pushed or pulled. With the development of technology and the diversification of decoration methods, sliding doors have evolved from traditional panel surfaces to glass, fabric, rattan, and aluminum alloy profiles. From sliding doors and folding doors to partition doors, the functions and scope of use of sliding doors are constantly expanding.
[0003] However, in the use of existing sliding doors, users often close them casually without controlling the force used, causing collisions and friction between the door panel and the frame. This results in noise during opening and closing. Furthermore, the rebound from the collision between the door panel and the frame can lead to incomplete closure, requiring a second closing. Consequently, the sliding door is of poor quality. Therefore, a polyurethane silent sliding door is proposed. Utility Model Content
[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a polyurethane silent sliding door that can solve the problems in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a polyurethane silent sliding door, comprising two first polyurethane sliding plates and two first polyurethane side sealing plates, with four second polyurethane side sealing plates and four second polyurethane sliding plates disposed between the first polyurethane sliding plates and the first polyurethane side sealing plates. The second polyurethane sliding plates can slide within the first polyurethane sliding plates. The opposite sides of the first polyurethane sliding plates and the second polyurethane sliding plates are mutually adapted to each other. The opposite sides of the first polyurethane side sealing plates and the second polyurethane side sealing plates are mutually adapted to each other. A hidden groove is provided in the inner cavity of the second polyurethane side sealing plate. A rotating shaft is rotatably connected to the inner wall of the hidden groove. A swing rod is fixedly connected to the surface of the rotating shaft. A climbing wheel is rotatably connected inside the swing rod. The surface of the climbing wheel contacts the surface of the first polyurethane sliding plate. A limiting frame is fixedly connected to the side of the first polyurethane side sealing plate closest to the second polyurethane side sealing plate.
[0006] Preferably, the second polyurethane slide plate has a first pulley inside, the surface of the first pulley being in contact with the surface of the first polyurethane slide plate, and a second pulley is provided in the inner cavity of the second polyurethane slide plate, the surface of the second pulley being in contact with the surface of the first polyurethane slide plate.
[0007] Preferably, rubber pads are fixedly connected to both sides of the inner cavity of the first polyurethane slide plate, and the opposite sides of the two rubber pads are in contact with the surfaces of the second polyurethane side sealing plate and the second polyurethane slide plate.
[0008] Preferably, a sponge pad is fixedly connected to the surface of the second polyurethane side sealing plate.
[0009] Preferably, a torsion spring is movably sleeved on the surface of the rotating shaft, and the two ends of the torsion spring are respectively fixedly connected to the surface of the rotating shaft and the interior of the second polyurethane side sealing plate.
[0010] Preferably, the limiting frame is hook-shaped, and the lower end of the longer end of the limiting frame is inclined.
[0011] Preferably, the connection between the first polyurethane slide plate and the first polyurethane side sealing plate is spliced at a 90-degree angle and fixed with stainless steel self-tapping screws. Similarly, the connection between the second polyurethane side sealing plate and the second polyurethane slide plate is spliced at a 90-degree angle and fixed with stainless steel self-tapping screws.
[0012] Preferably, two glass doors are fixedly connected between the four second polyurethane side sealing plates and the four second polyurethane sliding plates.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] (1) The polyurethane silent sliding door reduces the rebound force when the second polyurethane side sealing plate contacts the first polyurethane side sealing plate, thereby reducing the situation where the second polyurethane side sealing plate collides with the first polyurethane side sealing plate due to the large closing force when the user closes the sliding door, resulting in the sliding door not closing completely and requiring the user to close the sliding door a second time. This improves the effectiveness of the device and has good promotional value and practicality.
[0015] (2) The polyurethane silent sliding door can convert the impact force of the second polyurethane side sealing plate hitting the first polyurethane side sealing plate into the elastic force of the torsion spring and the climbing force of the climbing wheel in the limit frame, thereby buffering the collision between the second polyurethane side sealing plate and the first polyurethane side sealing plate, reducing the noise when the sliding door is closed, and further improving the silent effect of the sliding door. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0017] Figure 1 This is a structural schematic diagram of a polyurethane silent sliding door according to the present invention;
[0018] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;
[0019] Figure 3 This is a schematic diagram of the surface structure of the first polyurethane sliding plate of this utility model;
[0020] Figure 4 This is a schematic diagram of the surface structure of the first polyurethane sliding plate of this utility model;
[0021] Figure 5 This utility model Figure 4 Enlarged view of point B in the middle;
[0022] Figure 6 This is a schematic diagram of the surface structure of the first polyurethane side sealing plate of this utility model.
[0023] Reference numerals: 1. Glass door; 2. First polyurethane sliding plate; 3. First polyurethane side sealing plate; 4. Second polyurethane side sealing plate; 5. Second polyurethane sliding plate; 6. Sponge pad; 7. Rubber pad; 8. First pulley; 9. Hidden groove; 10. Climbing wheel; 11. Swing rod; 12. Second pulley; 13. Limiting frame; 14. Rotating shaft; 15. Torsion spring. Detailed Implementation
[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0025] Please see Figure 1-6 This utility model provides a technical solution: a polyurethane silent sliding door, including two first polyurethane sliding plates 2 and two first polyurethane side sealing plates 3. The connection between the first polyurethane sliding plates 2 and the first polyurethane side sealing plates 3 is spliced at a 90-degree angle and fixed with stainless steel self-tapping screws, thus forming the outer frame of the sliding door. Four second polyurethane side sealing plates 4 and four second polyurethane sliding plates 5 are arranged between the first polyurethane sliding plates 2 and the first polyurethane side sealing plates 3. The second polyurethane sliding plates 5 can slide in the first polyurethane sliding plates 2. The connection between the second polyurethane side sealing plates 4 and the second polyurethane sliding plates 5 is also spliced at a 90-degree angle and fixed with stainless steel self-tapping screws, serving as two movable frames of the sliding door. Two glass doors 1 are fixedly connected between the four second polyurethane side sealing plates 4 and the four second polyurethane sliding plates 5, serving as two door panels of the sliding door. The opposite sides of the first polyurethane sliding plates 2 and the second polyurethane sliding plates 5 are adapted to each other, and the opposite sides of the first polyurethane side sealing plates 3 and the second polyurethane side sealing plates 4 are adapted to each other, thus ensuring the stability of the sliding door during use.
[0026] The second polyurethane sliding plate 5 has a first pulley 8 inside, and the surface of the first pulley 8 contacts the surface of the first polyurethane sliding plate 2. This reduces friction between the second polyurethane sliding plate 5 and the first pulley 8, improving the smoothness of the sliding door's opening and closing. Rubber pads 7 are fixedly connected to both sides of the inner cavity of the first polyurethane sliding plate 2. The opposite sides of the two rubber pads 7 contact the surfaces of the second polyurethane side sealing plate 4 and the second polyurethane sliding plate 5. The rubber pads 7 fill the gaps between the second polyurethane side sealing plate 4, the second polyurethane sliding plate 5, and the inner cavity of the first polyurethane sliding plate 2, making the contact soft. This prevents collisions between the second polyurethane side sealing plate 4, the second polyurethane sliding plate 5, and the inner cavity of the first polyurethane sliding plate 2 during opening and closing, thus avoiding excessive noise during use. This design is suitable for quiet environments such as hospitals, offices, and bedrooms, solving the technical problem of excessive noise during the sliding process of current sliding doors.
[0027] The inner cavity of the second polyurethane sliding plate 5 is provided with a second pulley 12. The surface of the second pulley 12 is in contact with the surface of the first polyurethane sliding plate 2. Thus, the arrangement of the second pulley 12 and the first pulley 8 supports the inner frame of the sliding door as a whole, while reducing the friction between the second polyurethane sliding plate 5 and the first polyurethane sliding plate 2. This ensures the smooth opening and closing of the sliding door during use, and at the same time reduces the noise generated by the friction between the second polyurethane sliding plate 5 and the first polyurethane sliding plate 2, further improving the quietness of the device.
[0028] A sponge pad 6 is fixedly connected to the surface of the second polyurethane side sealing plate 4. This cushions the impact between the second polyurethane side sealing plate 4 and the first polyurethane side sealing plate 3 during the opening and closing of the sliding door. This avoids the second polyurethane side sealing plate 4 making a lot of noise when it impacts the first polyurethane side sealing plate 3, thus improving the quietness of the sliding door during opening and closing. This has high promotional value.
[0029] The inner cavity of the second polyurethane side sealing plate 4 is provided with a hidden groove 9. The inner wall of the hidden groove 9 is rotatably connected to a rotating shaft 14. A swing rod 11 is fixedly connected to the surface of the rotating shaft 14. A climbing wheel 10 is rotatably connected inside the swing rod 11. The surface of the climbing wheel 10 contacts the surface of the first polyurethane sliding plate 2. A torsion spring 15 is movably sleeved on the surface of the rotating shaft 14. The two ends of the torsion spring 15 are fixedly connected to the surface of the rotating shaft 14 and the interior of the second polyurethane side sealing plate 4, respectively, to drive the rotating shaft 14 and the swing rod 11 to reset. At the same time, the elastic force of the torsion spring 15 is insufficient to push the moving frame to slide in the outer frame.
[0030] A limiting frame 13 is fixedly connected to the side of the first polyurethane side sealing plate 3 near the second polyurethane side sealing plate 4. The limiting frame 13 is hook-shaped, and the lower end of the longer end of the limiting frame 13 is inclined, which facilitates guiding the climbing wheel 10 into the interior of the limiting frame 13, thereby ensuring the smooth operation of the device. At the same time, the setting of the hidden groove 9 can hide the limiting frame 13 in the hidden groove 9 when the sliding door is closed, that is, when the second polyurethane side sealing plate 4 is attached to the first polyurethane side sealing plate 3, thereby avoiding the situation that the sliding door is not completely closed, thus ensuring the normal use of the sliding door.
[0031] Specifically, when the sliding door is closed, the second polyurethane side sealing plate 4 gradually approaches the first polyurethane side sealing plate 3, causing the climbing wheel 10 to contact the inclined surface of the longer end of the limiting frame 13. Guided by the inclined surface of the limiting frame 13, the climbing wheel 10 climbs along the inclined surface of the limiting frame 13 and enters the limiting frame 13. At the same time, the swing rod 11 is driven to rotate around the pivot 14 in the inner cavity of the second polyurethane side sealing plate 4, causing the torsion spring 15 to twist. This transforms the impact force of the second polyurethane side sealing plate 4 hitting the first polyurethane side sealing plate 3 into the elastic force of the torsion spring 15 and the climbing force of the climbing wheel 10 in the limiting frame 13, thereby mitigating the impact force between the second polyurethane side sealing plate 4 and the first polyurethane side sealing plate 3. The device buffers the impact, reducing noise when closing the sliding door and further improving its quietness. This design has high promotional value. Simultaneously, the lifting wheel 10 enters the limiting frame 13, which restrains it and further restricts the second polyurethane side sealing plate 4. This reduces the rebound force when the second polyurethane side sealing plate 4 contacts the first polyurethane side sealing plate 3, thus reducing the likelihood of the second polyurethane side sealing plate 4 colliding with the first polyurethane side sealing plate 3 due to excessive closing force when the user closes the sliding door casually. This prevents the sliding door from closing incompletely and requires a second closing, thereby improving the device's usability and demonstrating good promotional value and practicality.
[0032] Working principle: The second polyurethane side sealing plate 4 gradually approaches the first polyurethane side sealing plate 3, thereby causing the climbing wheel 10 to contact the inclined surface of the longer end of the limiting frame 13. Guided by the inclined surface of the limiting frame 13, the climbing wheel 10 climbs along the inclined surface of the limiting frame 13 and enters the limiting frame 13. At the same time, the swing rod 11 is driven to rotate around the pivot 14 in the inner cavity of the second polyurethane side sealing plate 4, thereby causing the torsion spring 15 to twist. This converts the impact force of the second polyurethane side sealing plate 4 hitting the first polyurethane side sealing plate 3 into the elastic force of the torsion spring 15 and the climbing force of the climbing wheel 10 in the limiting frame 13, thus buffering the collision between the second polyurethane side sealing plate 4 and the first polyurethane side sealing plate 3.
[0033] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A polyurethane silent sliding door, comprising two first polyurethane sliding plates (2) and two first polyurethane side sealing plates (3), characterized in that: Four second polyurethane side seals (4) and four second polyurethane slides (5) are provided between the first polyurethane slide plate (2) and the first polyurethane side seal (3). The second polyurethane slides (5) can slide in the first polyurethane slide plate (2). The opposite sides of the first polyurethane slide plate (2) and the second polyurethane slide plate (5) are adapted to each other. The opposite sides of the first polyurethane side seal (3) and the second polyurethane side seal (4) are adapted to each other. The inner cavity of the second polyurethane side seal (4) is provided with a hidden groove (9). The inner wall of the hidden groove (9) is rotatably connected to a rotating shaft (14). The surface of the rotating shaft (14) is fixedly connected to a swing rod (11). The inside of the swing rod (11) is rotatably connected to a climbing wheel (10). The surface of the climbing wheel (10) is in contact with the surface of the first polyurethane slide plate (2). The side of the first polyurethane side seal (3) close to the second polyurethane side seal (4) is fixedly connected to a limiting frame (13).
2. The polyurethane silent sliding door according to claim 1, characterized in that: The second polyurethane slide plate (5) is provided with a first pulley (8) inside, and the surface of the first pulley (8) is in contact with the surface of the first polyurethane slide plate (2). The second polyurethane slide plate (5) is provided with a second pulley (12) inside, and the surface of the second pulley (12) is in contact with the surface of the first polyurethane slide plate (2).
3. A polyurethane silent sliding door according to claim 1, characterized in that: Rubber pads (7) are fixedly connected to both sides of the inner cavity of the first polyurethane slide plate (2), and the opposite sides of the two rubber pads (7) are in contact with the surfaces of the second polyurethane side sealing plate (4) and the second polyurethane slide plate (5).
4. A polyurethane silent sliding door according to claim 1, characterized in that: A sponge pad (6) is fixedly connected to the surface of the second polyurethane side sealing plate (4).
5. A polyurethane silent sliding door according to claim 1, characterized in that: A torsion spring (15) is movably sleeved on the surface of the rotating shaft (14), and the two ends of the torsion spring (15) are fixedly connected to the surface of the rotating shaft (14) and the interior of the second polyurethane side sealing plate (4).
6. A polyurethane silent sliding door according to claim 1, characterized in that: The limiting frame (13) is hook-shaped, and the lower end of the longer end of the limiting frame (13) is inclined.
7. A polyurethane silent sliding door according to claim 1, characterized in that: The connection between the first polyurethane slide plate (2) and the first polyurethane side sealing plate (3) is spliced at a 90-degree angle and fixed with stainless steel self-tapping screws. The connection between the second polyurethane side sealing plate (4) and the second polyurethane slide plate (5) is also spliced at a 90-degree angle and fixed with stainless steel self-tapping screws.
8. A polyurethane silent sliding door according to claim 1, characterized in that: Two glass doors (1) are fixedly connected between the four second polyurethane side sealing panels (4) and the four second polyurethane sliding plates (5).