Sliding door structure
By hinged the slide rail assembly to the lower frame and setting a gap, the problem of increased friction caused by excessive pressure on the pulley or slider when the load is unbalanced is solved, thus improving the smoothness and reliability of sliding.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-04-07
AI Technical Summary
In traditional slide rail systems, under unbalanced loads, some pulleys or sliders bear excessive pressure, leading to increased friction and uneven sliding.
The slide rail assembly is hinged to the lower frame, allowing for slight swaying, and an initial gap is set to control the sway amplitude, reduce pressure on the pulleys or sliders, and prevent derailment.
It solves the problem of uneven sliding, improves the smoothness and reliability of sliding, and prevents the slide rail assembly from swaying significantly and derailing.
Smart Images

Figure CN224093254U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of doors and windows, and more specifically, to a sliding door structure. Background Technology
[0002] Sliding doors and windows are widely used in residential and commercial buildings. Composed of materials such as frames and glass, they provide isolation and ventilation between the interior and exterior. Modern door and window designs emphasize aesthetics, durability, and energy efficiency, meeting various needs for security, waterproofing, thermal insulation, and sound insulation through different materials, models, and configurations. The sliding track system is a key component of sliding doors and windows, used to enable opening and closing. A typical sliding track system consists of guide rails, sliders, and rollers. The guide rails are fixed to the door and window frame, while the sliders and rollers are located on the door and window, allowing the door and window to slide smoothly along the guide rails. Sliding track systems are diverse in design, including single-track and double-track types. The refined design and smooth movement of the sliding track system ensure smooth opening and closing of doors and windows, increasing user comfort and convenience.
[0003] However, when traditional slide rail systems encounter unbalanced loads, some pulleys or sliders may bear excessive pressure, thereby increasing friction and causing problems with smooth sliding. Utility Model Content
[0004] Therefore, in order to solve the problem that traditional sliding rail systems, when encountering unbalanced loads, cause some pulleys or sliders to bear excessive pressure, thereby increasing friction and resulting in uneven sliding, this utility model provides a sliding door structure, the specific technical solution of which is as follows:
[0005] A sliding door structure, including
[0006] Sector frame;
[0007] Bottom frame;
[0008] A slide rail assembly, wherein the fan frame is disposed on the slide rail assembly and slidably connected to the slide rail assembly, and the bottom of the slide rail assembly is hinged to the lower frame; a first gap is formed between the slide rail assembly and the lower frame.
[0009] In the aforementioned sliding door structure, when encountering an unbalanced load, the sliding rail assembly is hinged to the lower frame, causing the assembly to swing slightly. This reduces the excessive pressure on some pulleys or sliders caused by the unbalanced load, alleviating the problem of uneven sliding of the sash frame. By setting a first gap, the swing amplitude of the sliding rail assembly is controlled, preventing large-scale swaying that could cause the sash frame to separate from the sliding rail assembly and derail. This sliding door structure solves the problem of traditional sliding rail systems experiencing excessive pressure on some pulleys or sliders when encountering an unbalanced load, thus increasing friction and causing uneven sliding.
[0010] Furthermore, the lower frame includes a first connecting portion, a second connecting portion, and a third connecting portion connected in sequence, with a hidden space formed between the first connecting portion, the second connecting portion, and the third connecting portion.
[0011] Furthermore, the second connecting part is provided with a fixing strip; the fixing strip is located in the hidden space; the fixing strip includes a support part and a slide rail part with a cylindrical outer contour; the support part is provided on the second connecting part, and the slide rail part is provided on the support part.
[0012] Furthermore, the slide rail assembly includes a pulley, a rotating shaft, and a C-shaped groove. The C-shaped groove includes a first fixing part, a second fixing part, and a third fixing part connected in sequence, and a first space is formed between the first fixing part, the second fixing part, and the third fixing part.
[0013] Furthermore, the second fixing part is provided with an opening for the pulley to pass through, and the pulley is located in the first space; one end of the rotating shaft is inserted into the first fixing part, the other end of the rotating shaft passes through the pulley and is inserted into the third fixing part, and the fan frame is located on the pulley and is slidably connected to the pulley.
[0014] Furthermore, the C-shaped groove also includes a fourth fixing part disposed on the second fixing part, the fourth fixing part having a first groove with an outer contour of C, the slide rail part being inserted into the first groove, the first groove being hinged to the slide rail part; the first gap being formed between the fourth fixing part and the second connecting part.
[0015] Furthermore, a first limiting block is inserted into the first fixing part, a second gap is formed between the first limiting block and the second connecting part, and a third gap is formed between the first limiting block and the first connecting part; a second limiting block is inserted into the third fixing part, a fourth gap is formed between the second limiting block and the second connecting part, and a fifth gap is formed between the second limiting block and the third connecting part.
[0016] Furthermore, the bottom of the fan frame is provided with a first limiting part and a second limiting part, and the pulley is located between the first limiting part and the second limiting part.
[0017] Furthermore, the bottom of the fan frame is provided with a guide strip, and the pulley is provided with a second groove, in which the guide strip is inserted.
[0018] Furthermore, the bottom of the fan frame is provided with a third groove, and the pulley is disposed in the third groove. Attached Figure Description
[0019] The present invention can be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale; rather, the focus is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.
[0020] Figure 1 This is a diagram showing the usage state of the sliding door structure according to an embodiment of this utility model;
[0021] Figure 2 This is one of the structural schematic diagrams of the sliding door structure described in one embodiment of this utility model;
[0022] Figure 3 yes Figure 2 Enlarged view of part A;
[0023] Figure 4 This is a second schematic diagram of the sliding door structure according to an embodiment of the present invention;
[0024] Figure 5 This is the third structural schematic diagram of the sliding door structure described in one embodiment of this utility model;
[0025] Figure 6 This is the fourth structural schematic diagram of the sliding door structure described in one embodiment of this utility model.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1-Fan frame; 2-Lower frame; 21-First connecting part; 22-Second connecting part; 23-Third connecting part; 3-Slide rail assembly; 31-Pulley; 32-Rotating shaft; 33-C-groove; 331-First fixing part; 332-Second fixing part; 333-Third fixing part; 334-Fourth fixing part; 4-First gap; 5-Hidden space; 6-Fixing strip; 61-Support part; 62-Slide rail part; 7-First groove; 8-First limiting block; 9-Second limiting block; 10-First limiting part; 11-Second limiting part; 12-Guide strip; 13-Second groove; 14-Third groove. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit its scope of protection.
[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0031] In this utility model, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.
[0032] like Figure 1 As shown in Figure 6, a sliding door structure in one embodiment of the present invention includes a fan frame 1, a lower frame 2, and a slide rail assembly 3; the fan frame 1 is disposed on the slide rail assembly 3 and slidably connected to the slide rail assembly 3, and the bottom of the slide rail assembly 3 is hinged to the lower frame 2; a first gap 4 is formed between the slide rail assembly 3 and the lower frame 2.
[0033] In the aforementioned sliding door structure, when encountering an unbalanced load, the slide rail assembly 3 is hinged to the lower frame 2, causing the slide rail assembly 3 to swing slightly. This reduces the excessive pressure on some pulleys 31 or sliders caused by the unbalanced load, alleviating the problem of the fan frame 1 sliding unevenly. By setting a first gap 4, the swing amplitude of the slide rail assembly 3 is controlled, preventing the slide rail assembly 3 from swinging too much, which could cause the fan frame 1 to separate from the slide rail assembly 3 and derail. This sliding door structure solves the problem that in traditional slide rail systems, when encountering an unbalanced load, some pulleys 31 or sliders will bear excessive pressure, thereby increasing friction and causing uneven sliding.
[0034] like Figure 1As shown in Figure 3, in one embodiment, the lower frame 2 includes a first connecting portion 21, a second connecting portion 22, and a third connecting portion 23 connected in sequence, with a hidden space 5 formed between the first connecting portion 21, the second connecting portion 22, and the third connecting portion 23. Thus, by providing the hidden space 5, the border of the fan frame 1 is hidden, improving aesthetics.
[0035] like Figure 1 As shown in Figure 4, in one embodiment, the second connecting portion 22 is provided with a fixing strip 6; the fixing strip 6 is located within the hidden space 5; the fixing strip 6 includes a support portion 61 and a slide rail portion 62 with a cylindrical outer contour; the support portion 61 is disposed on the second connecting portion 22, and the slide rail portion 62 is disposed on the support portion 61; the slide rail assembly 3 includes a pulley 31, a rotating shaft 32, and a C-shaped groove 33, the C-shaped groove 33 includes a first fixing portion 331, a second fixing portion 332, and a third fixing portion 333 connected in sequence, and a first space is formed between the first fixing portion 331, the second fixing portion 332, and the third fixing portion 333; the second fixing portion 332 is provided with a space for the pulley The opening 31 is through which the pulley 31 is located within the first space; one end of the rotating shaft 32 is inserted into the first fixing part 331, and the other end of the rotating shaft 32 passes through the pulley 31 and is inserted into the third fixing part 333; the fan frame 1 is located on the pulley 31 and is slidably connected to the pulley 31; the C-shaped groove 33 further includes a fourth fixing part 334 located on the second fixing part 332; the fourth fixing part 334 has a first groove 7 with an outer contour of C; the slide rail part 62 is inserted into the first groove 7; the first groove 7 is hinged to the slide rail part 62; the first gap 4 is formed between the fourth fixing part 334 and the second connecting part 22. Thus, when encountering an unbalanced load, the first groove 7 is hinged to the slide rail 62, and the C-shaped groove 33 swings slightly, reducing the excessive pressure on some pulleys 31 caused by the unbalanced load and alleviating the problem of the fan frame 1 sliding unevenly. In this way, by providing the fourth fixing part 334 and the guide bar 12, the height of the slide rail assembly 3 and the fan frame 1 is raised, effectively preventing the slide rail assembly 3 and the fan frame 1 from contacting water and corrosive substances in the lower frame 2, thereby improving reliability.
[0036] like Figure 4As shown, in one embodiment, a first limiting block 8 is inserted into the first fixing part 331, a second gap is formed between the first limiting block 8 and the second connecting part 22, and a third gap is formed between the first limiting block 8 and the first connecting part 21; a second limiting block 9 is inserted into the third fixing part 333, a fourth gap is formed between the second limiting block 9 and the second connecting part 22, and a fifth gap is formed between the second limiting block 9 and the third connecting part 23. Thus, by controlling the size of the second and third gaps, the swing amplitude of the slide rail assembly 3 can be controlled.
[0037] like Figure 4 As shown, in one embodiment, the bottom of the fan frame 1 is provided with a first limiting part 10 and a second limiting part 11, and the pulley 31 is located between the first limiting part 10 and the second limiting part 11. In this way, by providing the first limiting part 10 and the second limiting part 11, the pulley 31 is prevented from derailing.
[0038] like Figure 5 As shown, in one embodiment, the bottom of the fan frame 1 is provided with a guide strip 12, and the pulley 31 is provided with a second groove 13, with the guide strip 12 inserted into the second groove 13. Thus, by inserting the guide strip 12 into the second groove 13, the pulley 31 is prevented from derailing.
[0039] like Figure 6 As shown, in one embodiment, the bottom of the fan frame 1 is provided with a third groove 14, and the pulley 31 is disposed in the third groove 14. In this way, by disposing of the pulley 31 in the third groove 14, the pulley 31 is prevented from derailing.
[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0041] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A sliding door structure, characterized in that, include: Sector frame; Bottom frame; A slide rail assembly, wherein the fan frame is disposed on the slide rail assembly and slidably connected to the slide rail assembly, and the bottom of the slide rail assembly is hinged to the lower frame; a first gap is formed between the slide rail assembly and the lower frame.
2. The sliding door structure according to claim 1, characterized in that, The lower frame includes a first connecting part, a second connecting part, and a third connecting part connected in sequence, with a hidden space formed between the first connecting part, the second connecting part, and the third connecting part.
3. The sliding door structure according to claim 2, characterized in that, The second connecting part is provided with a fixing strip; the fixing strip is located in the hidden space; the fixing strip includes a support part and a slide rail part with a cylindrical outer contour; the support part is provided on the second connecting part, and the slide rail part is provided on the support part.
4. The sliding door structure according to claim 3, characterized in that, The slide rail assembly includes a pulley, a rotating shaft, and a C-shaped groove. The C-shaped groove includes a first fixing part, a second fixing part, and a third fixing part connected in sequence, and a first space is formed between the first fixing part, the second fixing part, and the third fixing part.
5. The sliding door structure according to claim 4, characterized in that, The second fixing part is provided with an opening for the pulley to pass through, and the pulley is located in the first space; one end of the rotating shaft is inserted into the first fixing part, and the other end of the rotating shaft passes through the pulley and is inserted into the third fixing part; the fan frame is located on the pulley and is slidably connected to the pulley.
6. The sliding door structure according to claim 5, characterized in that, The C-shaped groove also includes a fourth fixing part disposed on the second fixing part. The fourth fixing part is provided with a first groove with an outer contour in the shape of a C. The slide rail part is inserted into the first groove, and the first groove is hinged to the slide rail part. The first gap is formed between the fourth fixing part and the second connecting part.
7. The sliding door structure according to claim 5, characterized in that, A first limiting block is inserted into the first fixing part, a second gap is formed between the first limiting block and the second connecting part, and a third gap is formed between the first limiting block and the first connecting part; a second limiting block is inserted into the third fixing part, a fourth gap is formed between the second limiting block and the second connecting part, and a fifth gap is formed between the second limiting block and the third connecting part.
8. The sliding door structure according to claim 5, characterized in that, The bottom of the fan frame is provided with a first limiting part and a second limiting part, and the pulley is located between the first limiting part and the second limiting part.
9. The sliding door structure according to claim 5, characterized in that, The bottom of the fan frame is provided with a guide strip, and the pulley is provided with a second groove, in which the guide strip is inserted.
10. The sliding door structure according to claim 5, characterized in that, The bottom of the fan frame is provided with a third groove, and the pulley is located in the third groove.