Pulley assembly of sliding door and high-load-bearing sliding door
By designing a lever structure and fixing pin in the sliding door pulley assembly, the problems of uneven sliding and exposed hardware were solved, achieving stable operation under high load and an aesthetically pleasing effect.
Patent Information
- Application Number
- CN202423008154.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Existing sliding door roller assemblies do not slide smoothly under high loads, exposed hardware affects aesthetics, and have a shortened service life.
Design a pulley assembly including a pulley housing, a first housing, and a second housing. By setting the first and second pulleys inside the second housing, a lever structure is formed. Combined with the design of a fixing pin, the stability and concealment of the pulley assembly are ensured. The track system and plastic strips are used to reduce vibration and noise.
It enables the pulley assembly to operate smoothly under high loads, has an attractive appearance, avoids exposed hardware, and improves the service life and overall aesthetics of the sliding door.
Smart Images
Figure CN223767340U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of door and window technology, and in particular to a sliding door pulley assembly and a high load-bearing sliding door. Background Technology
[0002] In urban construction, large sliding doors are often used in public buildings such as office buildings and hotels to make buildings more aesthetically pleasing, more grand in style, and easier to access. As the area of the sliding door increases, its weight also increases, which places higher demands on the sliding door's roller assembly.
[0003] However, existing sliding door roller assemblies often present several problems when subjected to high loads. First, rollers are prone to sliding unevenly under heavy loads, affecting not only the user experience but also potentially causing the door to jam or become difficult to move. Second, to withstand greater weight, some roller assemblies use larger or more numerous rollers, often resulting in exposed hardware and impacting the overall aesthetics of the sliding door. Furthermore, prolonged exposure to high loads can accelerate wear and tear on the roller assemblies, shortening their lifespan.
[0004] These problems not only affect the normal use of sliding doors, but may also increase maintenance costs and reduce the overall quality of buildings. Therefore, developing a sliding door pulley assembly that can withstand high loads, operate smoothly, and has an aesthetically pleasing appearance has become an important research topic.
[0005] To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content
[0006] The purpose of this utility model is to provide a sliding door pulley assembly and a high load-bearing sliding door, which has the advantages of bearing high load, running smoothly, and reducing the exposure of hardware.
[0007] In a first aspect, this utility model provides a pulley assembly for a sliding door, comprising:
[0008] The pulley housing has a first track cavity and a second track cavity arranged in parallel.
[0009] The first housing, of which there are two, is respectively disposed in the first track cavity and the second track cavity. The first housing is provided with a first mounting cavity, and at least two rotating shafts are provided in the first mounting cavity, the rotating shafts being spaced apart in the first mounting cavity;
[0010] The second housing is rotatably mounted on the rotating shaft. The second housing has a second mounting cavity, and the second mounting cavity has a first pulley and a second pulley. The first pulley and the second pulley are located on opposite sides of the rotating shaft, and the first pulley and the second pulley can drive the second housing to rotate relative to the rotating shaft.
[0011] The sliding door pulley assembly provided by this utility model includes a pulley housing, a first housing, and a second housing. By arranging the first and second pulleys within the second housing, enabling the second housing to rotate relative to a rotating shaft, the first and second pulleys and the rotating shaft form a lever structure. This structure provides balance and height control for the door leaf as it moves along the track, achieving high load-bearing capacity and smooth operation of the pulley assembly. Furthermore, the pulley frame structure formed by the pulley housing, the first housing, and the second housing, through a rational structural design, conceals multiple pulleys internally, ensuring an aesthetically pleasing appearance. The pulley assembly offers advantages such as high load-bearing capacity, smooth operation, and an attractive appearance.
[0012] Furthermore, the first housing is provided with a fixing pin, and the pulley housing is provided with a plurality of fixing holes suitable for the two ends of the fixing pin to be inserted. The plurality of fixing holes are distributed on opposite sides of the first track cavity and the second track cavity, and the opposite ends of each fixing pin pass through the corresponding fixing hole.
[0013] The above technical solution includes a fixing pin on the first housing and fixing holes on the pulley housing. These fixing holes are located on opposite sides of the first and second track cavities. The design of having the fixing pin's two ends pass through these fixing holes effectively improves the stability of the pulley assembly. By inserting the fixing pin's two ends into the fixing holes, displacement of the first housing during use is prevented, thus ensuring stable operation of the pulley assembly under high load conditions.
[0014] Furthermore, each of the first housings has two fixing pins, which are spaced apart on the first housing, and the second housings are located between the two fixing pins.
[0015] By employing the above technical solution, and by spaced two fixing pins on the first housing and positioning the second housing between the two fixing pins, the problem of uneven sliding in the pulley assembly under high loads is solved. The spaced fixing pins effectively increase the stability of the pulley assembly, preventing the second housing from shifting during sliding, thereby ensuring smooth sliding.
[0016] Secondly, this utility model provides a high load-bearing sliding door, comprising:
[0017] The pulley assembly of any of the above sliding doors;
[0018] frame;
[0019] A track pad is provided on the frame. The track pad has a first track strip and a second track strip on the side facing away from the frame. The first track strip and the second track strip are arranged in parallel. The first track cavity and the second track cavity can be aligned with the first track strip and the second track strip respectively, so that the pulley in the first track cavity engages with the first track strip and the pulley in the second track cavity engages with the second track strip.
[0020] The door leaf is connected to the pulley assembly and is slidably mounted on the first track and the second track via the pulley assembly.
[0021] By adopting the above technical solution and setting up pulley assemblies, frames, and track pads, the problem of sliding doors not sliding smoothly under high loads is solved. Compared with existing technologies, this application improves the load-bearing capacity and sliding smoothness of sliding doors through the rational design of pulley assemblies and track systems, and avoids the problem of exposed hardware affecting aesthetics. Therefore, this application provides a technical solution for high load-bearing sliding doors, which has significant practical value.
[0022] Furthermore, it also includes a plastic strip disposed between the track pad and the frame.
[0023] By adopting the above technical solution, adding a plastic strip between the track pad and the frame can reduce the vibration generated during the operation of the sliding door, thereby reducing the noise generated by the collision of the profiles.
[0024] Furthermore, the frame has a first T-shaped groove on the side facing the plastic strip, and the plastic strip has a first locking block on the side facing the frame, the first locking block being able to engage in the first T-shaped groove.
[0025] Furthermore, the track pad material has a second T-shaped groove on the side facing the plastic strip, and the plastic strip has a second locking block on the side facing the track pad material, the second locking block being able to engage in the second T-shaped groove.
[0026] Furthermore, the end of the door leaf facing the track pad is provided with an installation groove, and the pulley housing is disposed in the installation groove.
[0027] Using the above technical solution, the end of the door leaf facing the track pad has a mounting groove, and the pulley housing is set in this mounting groove. This design allows the pulley assembly to be installed more stably on the door leaf, ensuring smooth operation of the sliding door during use. Furthermore, this design effectively conceals the pulley assembly, preventing exposed hardware from affecting the door's aesthetics.
[0028] Furthermore, the distance between the door leaf and the track pad is H, where H ≤ 3mm.
[0029] By adopting the above technical solution, the overlap between the door leaf and the track pad is treated with micro-gap treatment to control the gap between the two, and the hardware is also hidden from the side of the door leaf, resulting in a better overall appearance.
[0030] Furthermore, the track pad is provided with a first mounting groove and a second mounting groove, the first track bar is detachably installed in the first mounting groove, and the second track bar is detachably installed in the second mounting groove.
[0031] By adopting the above technical solution, the first and second mounting grooves set on the track pad material facilitate subsequent maintenance and replacement, thereby improving the overall performance of the sliding door.
[0032] As can be seen from the above, the sliding door pulley assembly provided by this utility model includes a pulley housing, a first housing, and a second housing. By setting the first and second pulleys inside the second housing, enabling the second housing to rotate relative to the rotation axis, the first pulley, the second pulley, and the rotation axis form a lever structure, which has the function of balancing the height of the door leaf when it moves on the track, realizing the high load-bearing capacity and smooth operation of the pulley assembly. In addition, the pulley frame structure formed by the pulley housing, the first housing, and the second housing, through reasonable structural design, hides multiple pulleys inside, ensuring the aesthetic appearance. The pulley assembly has the advantages of bearing high loads, smooth operation, and beautiful appearance.
[0033] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing embodiments of this application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description
[0034] Figure 1 This is a schematic diagram of the structure of a sliding door pulley assembly proposed in this utility model.
[0035] Figure 2 This is a cross-sectional structural diagram of a high load-bearing sliding door proposed in this utility model.
[0036] Figure 3 for Figure 2 Enlarged structural diagram of area A of the medium-high load-bearing sliding door.
[0037] Figure 4 This is a cross-sectional structural diagram of a high load-bearing sliding door proposed in this utility model from another perspective.
[0038] In the attached drawings: 100, first housing; 110, first mounting cavity; 120, rotating shaft; 130, fixing pin; 200, second housing; 210, second mounting cavity; 211, first pulley; 212, second pulley; 300, pulley housing; 310, first track cavity; 320, second track cavity; 330, fixing hole; 400, frame; 410, first T-slot; 500, track pad; 510, first track strip; 520, second track strip; 530, second T-slot; 541, first mounting groove; 542, second mounting groove; 600, plastic strip; 610, first locking block; 620, second locking block; 700, door leaf; 710, mounting slot; 721, above the leaf; 722, below the leaf; 723, leaf light bracket; 724, leaf hook bracket. Detailed Implementation
[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0040] The following disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.
[0041] In urban construction, large sliding doors are often used in public buildings such as office buildings and hotels to make buildings more aesthetically pleasing, more grand in style, and easier to access. As the area of the sliding door increases, its weight also increases. Under high load, the rollers of the sliding door are prone to problems such as uneven sliding and exposed hardware affecting the aesthetics.
[0042] To address the aforementioned problems, this application provides a pulley assembly for a sliding door.
[0043] Reference Appendix Figure 1In one embodiment, the sliding door's pulley assembly includes a pulley housing 300, a first housing 100, and a second housing 200. The pulley housing 300 has a first track cavity 310 and a second track cavity 320 arranged in parallel. There are two first housings 100, each located within a first track cavity 310 and a second track cavity 320. Each first housing 100 has a first mounting cavity 110, containing at least two rotating shafts 120 spaced apart within the first mounting cavity 110. The second housing 200 is rotatably mounted on the rotating shafts 120. The second housing 200 has a second mounting cavity 210, containing a first pulley 211 and a second pulley 212. The first pulley 211 and the second pulley 212 are located on opposite sides of the rotating shaft 120, and the first pulley 211 and the second pulley 212 can drive the second housing 200 to rotate relative to the rotating shaft 120.
[0044] As can be seen from the above, the sliding door pulley assembly provided by this utility model includes a pulley housing 300, a first housing 100, and a second housing 200. By arranging a first pulley 211 and a second pulley 212 within the second housing 200, enabling the second housing 200 to rotate relative to the rotation shaft 120, the first pulley 211, the second pulley 212, and the rotation shaft 120 form a lever structure. This structure provides a function of balancing the height of the door leaf as it moves on the track, achieving high load-bearing capacity and smooth operation of the pulley assembly. Furthermore, the pulley frame structure formed by the pulley housing 300, the first housing 100, and the second housing 200, through a reasonable structural design, conceals multiple pulleys internally, ensuring an aesthetically pleasing appearance. The pulley assembly has the advantages of withstanding high loads, smooth operation, and an attractive appearance.
[0045] In one embodiment, the first housing 100 is provided with a fixing pin 130, and the pulley housing 300 is provided with a plurality of fixing holes 330 suitable for inserting the two ends of the fixing pin 130. The plurality of fixing holes 330 are distributed on opposite sides of the first track cavity 310 and the second track cavity 320, and the opposite ends of each fixing pin 130 pass through the corresponding fixing hole 330.
[0046] Using the above technical solution, the first housing 100 is provided with a fixing pin 130, and the pulley housing 300 is provided with a fixing hole 330. The fixing holes 330 are located on opposite sides of the first track cavity 310 and the second track cavity 320. The design of the opposite ends of the fixing pin 130 passing through the fixing holes 330 can effectively improve the stability of the pulley assembly. By passing the two ends of the fixing pin 130 through the fixing holes 330, displacement of the first housing 100 during use can be prevented, thereby ensuring that the pulley assembly can maintain stable operation under high load conditions.
[0047] In one embodiment, each first housing 100 has two fixing pins 130, which are spaced apart on the first housing 100, and the second housing 200 is located between the two fixing pins 130.
[0048] By employing the above technical solution, and by spaced two fixing pins 130 on the first housing 100 and positioning the second housing 200 between the two fixing pins 130, the problem of uneven sliding of the pulley assembly under high load is solved. The spaced arrangement of the fixing pins 130 effectively increases the stability of the pulley assembly, prevents the second housing 200 from shifting during sliding, and thus ensures smooth sliding.
[0049] Reference Appendix Figure 2 This utility model also provides a high load-bearing sliding door, comprising:
[0050] The pulley assembly of any of the above sliding doors;
[0051] 400mm border;
[0052] A track pad 500 is provided on the frame 400. On the side of the track pad 500 facing away from the frame 400, there is a first track bar 510 and a second track bar 520. The first track bar 510 and the second track bar 520 are arranged in parallel. The first track cavity 310 and the second track cavity 320 can be aligned with the first track bar 510 and the second track bar 520 respectively, so that the pulley in the first track cavity 310 engages with the first track bar 510 and the pulley in the second track cavity 320 engages with the second track bar 520.
[0053] The door leaf 700 is connected to the pulley assembly and is slidably mounted on the first track 510 and the second track 520 via the pulley assembly.
[0054] By adopting the above technical solution, and by setting up a pulley assembly, a frame 400, and a track pad 500, the problem of sliding doors not sliding smoothly under high loads is solved. Compared with the prior art, this application improves the load-bearing capacity and sliding smoothness of the sliding door through the rational design of the pulley assembly and track system, and avoids the problem of exposed hardware affecting aesthetics. Therefore, this application provides a technical solution for high load-bearing sliding doors, which has significant practical value.
[0055] Specifically, the 400mm border can be installed by embedding it into the wall, which can minimize the impact of the 400mm border on the overall facade of the product, thereby achieving a panoramic effect.
[0056] In one embodiment, a plastic strip 600 is also included, which is disposed between the track pad 500 and the frame 400.
[0057] By adopting the above technical solution, adding a plastic strip 600 between the track pad 500 and the frame 400 can reduce the vibration generated during the operation of the sliding door, thereby reducing the noise generated by the collision of the profiles.
[0058] Reference Appendix Figure 3 In one embodiment, the side of the frame 400 facing the plastic strip 600 is provided with a first T-groove 410, and the side of the plastic strip 600 facing the frame 400 is provided with a first locking block 610, which can be locked into the first T-groove 410.
[0059] In one embodiment, the track pad 500 is provided with a second T-groove 530 on the side facing the plastic strip 600, and the plastic strip 600 is provided with a second locking block 620 on the side facing the track pad 500, the second locking block 620 being able to engage in the second T-groove 530.
[0060] In one embodiment, the door leaf 700 has an installation groove 710 at one end facing the track pad 500, and the pulley housing 300 is disposed in the installation groove 710.
[0061] Using the above technical solution, the end of the door leaf 700 facing the track pad 500 is provided with a mounting groove 710, and the pulley housing 300 is disposed within the mounting groove 710. This design allows the pulley assembly to be more stably installed on the door leaf 700, ensuring smooth operation of the sliding door during use. Furthermore, this design effectively conceals the pulley assembly, preventing exposed hardware from affecting the door's aesthetics.
[0062] In one embodiment, the distance between the door leaf 700 and the track pad 500 is H, where H ≤ 3 mm.
[0063] By adopting the above technical solution, the overlap between the door leaf 700 and the track pad 500 is treated with micro-gap to control the gap between the two. The hardware is also hidden from the side of the door leaf 700, resulting in a better overall appearance.
[0064] In one embodiment, the track pad 500 is provided with a first mounting groove 541 and a second mounting groove 542, the first track bar 510 is detachably disposed in the first mounting groove 541, and the second track bar 520 is detachably disposed in the second mounting groove 542.
[0065] By adopting the above technical solution, the first mounting groove 541 and the second mounting groove 542 set on the track pad 500 facilitate subsequent maintenance and replacement, thereby improving the overall performance of the sliding door.
[0066] For details, please refer to the appendix. Figure 2 Appendix Figure 4The door leaf 700 includes the upper part 721, the lower part 722, the light bracket 723, and the hook bracket 724. During installation, glue is first applied to the inside of the upper part 721, the lower part 722, the light bracket 723, and the hook bracket 724, then the glass is inserted, and the profiles are connected together by the corner brackets. Finally, glass glue is applied to the glass to further strengthen the connection between the glass and the profiles, ensuring the strength of the door leaf 700.
[0067] It is worth noting that the width of the sash hook 724 is W, which can be 21mm. The sash hook 724 adopts an ultra-narrow 21mm viewing face design, which helps to improve the overall transparency of the facade. The sash hook 724 uses multiple overlapping rubber strips to form a multi-layer sealing design, which helps to increase the sealing between the door leaves 700.
[0068] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0069] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.
Claims
1. A roller assembly for a sliding door, the roller assembly comprising: The utility model relates to a sliding door's pulley assembly, which comprises: a pulley shell (300) provided with a first track cavity (310) and a second track cavity (320) arranged in parallel; two first housings (100) arranged in the first track cavity (310) and the second track cavity (320) respectively, each of the first housings (100) being provided with a first mounting cavity (110) and at least two rotating shafts (120) arranged in the first mounting cavity (110) at intervals; a second housing (200) rotatably arranged on the rotating shafts (120), the second housing (200) being provided with a second mounting cavity (210) and a first pulley (211) and a second pulley (212) arranged in the second mounting cavity (210), the first pulley (211) and the second pulley (212) being arranged on opposite sides of the rotating shafts (120), and the first pulley (211) and the second pulley (212) being capable of driving the second housing (200) to rotate relative to the rotating shafts (120).
2. A roller assembly for a sliding door as claimed in claim 1, wherein, The first housing (100) is provided with a fixing pin (130), and the pulley shell (300) is provided with a plurality of fixing holes (330) suitable for the two ends of the fixing pin (130) to be inserted, the plurality of fixing holes (330) being arranged on opposite sides of the first track cavity (310) and the second track cavity (320), and the two ends of each fixing pin (130) being arranged in the corresponding fixing hole (330).
3. A roller assembly for a sliding door as claimed in claim 2, wherein, The number of the fixing pins (130) on each first housing (100) is two, and the two fixing pins (130) are arranged on the first housing (100) at intervals, and the second housing (200) is arranged between the two fixing pins (130).
4. A high load-bearing sliding door, characterized in that The utility model relates to a sliding door's pulley assembly, which comprises: the pulley assembly of any one of claims 1-3; a frame (400); a track pad (500) arranged on the frame (400), the track pad (500) being provided with a first track strip (510) and a second track strip (520) on the side away from the frame (400), the first track strip (510) and the second track strip (520) being arranged in parallel, and the first track cavity (310) and the second track cavity (320) being capable of being aligned with the first track strip (510) and the second track strip (520) respectively so that the pulley in the first track cavity (310) is clamped on the first track strip (510) and the pulley in the second track cavity (320) is clamped on the second track strip (520); a door leaf (700) connected with the pulley assembly and slidably arranged on the first track strip (510) and the second track strip (520) through the pulley assembly.
5. A high duty sliding door according to claim 4, wherein The utility model further comprises a plastic strip (600) arranged between the track pad (500) and the frame (400).
6. A high duty sliding door according to claim 5 wherein, The frame (400) is provided with a first T-shaped groove (410) on one side facing the plastic strip (600), and the plastic strip (600) is provided with a first clamping block (610) on one side facing the frame (400), which can be clamped in the first T-shaped groove (410).
7. A high duty sliding door as claimed in claim 5 wherein, The track pad (500) is provided with a second T-shaped groove (530) on one side facing the plastic strip (600), and the plastic strip (600) is provided with a second clamping block (620) on one side facing the track pad (500), which can be clamped in the second T-shaped groove (530).
8. A high duty sliding door as claimed in claim 4, wherein The door leaf (700) is provided with a mounting slot (710) on one end facing the track pad (500), and the pulley shell (300) is arranged in the mounting slot (710).
9. A high duty sliding door according to claim 8, characterised in that, The distance between the door leaf (700) and the track pad (500) is H, and H≤3mm.
10. A high duty sliding door as claimed in claim 4, wherein The track pad (500) is provided with a first mounting slot (541) and a second mounting slot (542), and the first track strip (510) is detachably arranged in the first mounting slot (541), and the second track strip (520) is detachably arranged in the second mounting slot (542).