Adjustable pulley structure for flat sliding door

Abstract

The utility model discloses a kind of adjustable pulley structure for flat sliding door, be set in the bottom or top surface of flat sliding door and can be translated on slide rail, including n-shaped pulley support, outer ring surface is the pulley of concave surface, C-shaped limit block, first adjusting screw rod, pulley lifting adjustment seat, second adjusting screw rod;C-shaped limit block is in the adjusting concave cavity, and the top of first adjusting screw rod is threadedly connected with C-shaped limit block, the end of pulley lifting adjustment seat is threadedly connected with second adjusting screw rod;Pulley is in the recessed area of n-shaped pulley support, and is connected on pulley lifting adjustment seat by shaft and bearing connection.This utility model's structure setting is reasonable, prevent pulley from track loosening or falling off, can be adjusted according to need, it is favorable to improve application range, pulley lifting adjustment seat can be lifted and adjusted according to need, realize pulley bottom side protruding n-shaped pulley support bottom surface height adjustment, satisfy the sliding demand of different situation, it is favorable to improve use stability and reliability.

Description

Technical Field

[0001] This utility model belongs to the technical field of sliding door pulley structure, specifically relating to an adjustable pulley structure for sliding doors. Background Technology

[0002] Sliding doors are a common type of door used in homes, primarily for partitioning and connecting spaces. They are operated by sliding, and in modern life, most sliding doors are made of glass. To improve stability and smoothness, rollers are typically installed at the bottom of the sliding door, allowing it to slide horizontally along a bottom track. While conventional rollers can meet general usage needs, their anti-loosening and anti-derailment performance is limited, and they cannot be adjusted for loosening or height. This can affect the stability and applicability of the door, thus limiting its suitability and practicality. Utility Model Content

[0003] The purpose of this utility model is to provide an adjustable pulley structure for a sliding door with a reasonable structural design that is conducive to improving the stability of use.

[0004] The technical solution to achieve the purpose of this utility model is an adjustable pulley structure for a sliding door, which is set at the bottom or top of the sliding door and can move horizontally on the slide rail. It includes an n-shaped pulley support, a pulley with a concave outer ring surface, a C-shaped limiting block, a first adjusting screw, a pulley lifting and adjusting seat, and a second adjusting screw.

[0005] The n-shaped pulley support has an adjustment cavity with an open bottom surface in one of its vertical rods, and an adjustment groove is provided horizontally in the middle of the other vertical rod.

[0006] The C-shaped limiting block is located in the adjusting cavity, and the first adjusting screw passes through the top surface of the n-shaped pulley support and is threadedly connected to the top of the C-shaped limiting block. The first adjusting screw rotates and causes the C-shaped limiting block to rise and fall.

[0007] The second adjusting screw passes through the adjusting vertical groove, and the end of the pulley lifting adjusting seat is located in the adjusting vertical groove and is threadedly connected to the second adjusting screw. The rotation of the second adjusting screw causes the pulley lifting adjusting seat to rise and fall.

[0008] The pulley is located in the recessed area of ​​the n-shaped pulley support and is connected to the pulley lifting adjustment seat through a shaft and bearing, and the bottom edge of the pulley protrudes from the bottom surface of the n-shaped pulley support.

[0009] A further preferred embodiment is that the pulley lifting adjustment seat includes a circular panel and an adjustment support block integrally formed on the edge of the circular panel;

[0010] The adjusting support block is located in the adjusting vertical groove and is threadedly connected to the second adjusting screw.

[0011] The shaft passes through the center of the circular panel and is connected to the bearing.

[0012] A further preferred embodiment is that the height of the adjusting support block is less than the height of the adjusting vertical groove.

[0013] A further preferred embodiment is that the two ends of the second adjusting screw are smooth surfaces, the smooth surfaces are located at the two ends of the adjusting vertical groove, and the second adjusting screw is limited within the adjusting vertical groove by a limiting snap ring.

[0014] A further preferred embodiment is that a buffer spring is provided between the top of the vertical rod of the C-shaped limiting block and the top wall of the adjusting cavity, and the first adjusting screw passes through the buffer spring.

[0015] A further preferred embodiment is that the symmetrical sides of the n-shaped pulley support are provided with decorative protective support covers.

[0016] A further preferred embodiment is a pressure plate fixed to the side of the n-shaped pulley support by screws;

[0017] The pressure plate and the n-shaped pulley support clamp the symmetrical side of the sliding door, and the screws pass through the sliding door for positioning.

[0018] A further preferred embodiment is that both the C-shaped limiting block and the pulley lifting adjustment seat are stainless steel structures.

[0019] A further preferred embodiment is that the slide rail has a side translation groove, the pulley is rolled on the top surface of the slide rail, and the lower lateral part of the C-shaped limiting block is translated into the side translation groove of the slide rail.

[0020] This utility model has positive effects: Its structure is rationally designed, incorporating a C-shaped limiting block and a pulley lifting adjustment seat. Combined with a first and second adjusting screw, it allows for adjustment of the distance between the lateral portion of the C-shaped limiting block and the pulley's central axis. During installation, the pulley is positioned on the top surface of the track, and the lateral portion of the C-shaped limiting block is in the side sliding groove of the track, improving assembly stability and reliability, preventing the pulley from loosening or falling off the track. Furthermore, it can be adjusted as needed, expanding its applicability. Simultaneously, the pulley lifting adjustment seat can also be adjusted in height as required, allowing for height adjustment of the pulley's bottom edge protruding from the bottom surface of the n-shaped pulley support, meeting sliding requirements in different situations, improving stability and reliability, and demonstrating strong applicability and practicality. Attached Figure Description

[0021] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0022] Figure 1This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the specific structure of the n-shaped pulley support in this utility model;

[0025] Figure 4 This is a schematic diagram of the specific structure of the C-shaped limiting block in this utility model;

[0026] Figure 5 This is a schematic diagram of the specific structure of the pulley lifting adjustment seat in this utility model;

[0027] Figure 6 This is a schematic diagram of the structure when the present invention is assembled with a sliding door.

[0028] Reference numerals in the attached drawings: 1. Sliding door; 2. Slide rail; 3. N-shaped pulley support; 4. Pulley; 5. C-shaped limit block; 6. First adjusting screw; 7. Pulley lifting adjustment seat; 71. Circular panel; 72. Adjusting support block; 8. Second adjusting screw; 9. Adjusting cavity; 10. Adjusting vertical groove; 11. Buffer spring; 12. Decorative protective support cover; 13. Pressure plate; 14. Side sliding groove. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example

[0031] See Figures 1 to 6 As shown, an adjustable pulley structure for a sliding door is installed at the bottom or top of the sliding door 1 and can move horizontally on the slide rail 2. It includes an n-shaped pulley support 3, a pulley 4 with a concave outer ring surface, a C-shaped limiting block 5, a first adjusting screw 6, a pulley lifting adjustment seat 7, and a second adjusting screw 8. In this embodiment, the n-shaped pulley support can be a metal structure or a plastic structure, and the pulley has a concave outer ring surface, so when installed on the track, the track rolls within the concave surface, which helps to prevent loosening or falling off. In conjunction with the C-shaped limiting block, the anti-loosening and anti-falling effect can be improved.

[0032] In practical applications, one vertical rod of the n-shaped pulley support has an adjustment cavity 9 with an open bottom surface, and the other vertical rod has an adjustment groove 10 horizontally arranged in the middle. During assembly, the C-shaped limiting block is located in the adjustment cavity, and the first adjusting screw passes through the top surface of the n-shaped pulley support and is threadedly connected to the top of the C-shaped limiting block. The first adjusting screw rotates and raises or lowers the C-shaped limiting block. The second adjusting screw passes through the adjustment groove, and the end of the pulley lifting adjustment seat is located in the adjustment groove and threadedly connected to the second adjusting screw. The second adjusting screw rotates and raises or lowers the pulley lifting adjustment seat. The pulley is located in the recessed area of ​​the n-shaped pulley support and is connected to the pulley lifting adjustment seat through a shaft and bearing. The bottom edge of the pulley protrudes from the bottom surface of the n-shaped pulley support. The side of the slide rail has a side translation groove 14. The pulley is rolled on the top surface of the slide rail, and the lower horizontal part of the C-shaped limiting block is translated into the side translation groove of the slide rail. Both the C-shaped limiting block and the pulley lifting adjustment seat are stainless steel structures. During use, the lower lateral part of the L-shaped limiting block is laterally positioned within the side sliding groove, while the pulley is positioned on the top surface of the track. This structure effectively prevents the pulley from loosening or falling off, improving stability and reliability during use. Furthermore, it is adjustable to meet the needs of different situations, thus expanding its applicability.

[0033] In practical applications, the pulley lifting adjustment seat 7 includes a circular panel 71 and an adjustment support block 72 integrally formed on the edge of the circular panel. During assembly, the adjustment support block is positioned within the adjustment vertical groove and threadedly connected to the second adjustment screw. The shaft passes through the center of the circular panel and is connected to a bearing. The pulley is connected to the shaft, allowing it to be adjusted up and down during lifting. In this embodiment, the height of the adjustment support block is less than the height of the adjustment vertical groove, thus providing a certain adjustment space.

[0034] In practical applications, both ends of the second adjusting screw are smooth surfaces, which are located at both ends of the adjusting vertical groove. The second adjusting screw is limited within the adjusting vertical groove by a limiting snap ring. With this structure, the rotation of the second adjusting screw does not affect its position on the n-shaped pulley support, improving the convenience and effectiveness of operation.

[0035] In practical applications, a buffer spring 11 is provided between the top of the vertical rod of the C-shaped limiting block and the top wall of the adjusting cavity, and the first adjusting screw passes through the buffer spring. This can improve the connection stability and effectiveness of the C-shaped limiting block.

[0036] In practical applications, decorative protective support covers 12 are provided on the symmetrical sides of the n-shaped pulley support. A pressure plate 13 is fixed to the side of the n-shaped pulley support by screws; during assembly, the pressure plate and the n-shaped pulley support clamp the symmetrical sides of the sliding door, and the screws pass through the sliding door for positioning. This ensures the smoothness and reliability of the sliding door installation.

[0037] This utility model has positive effects: Its structure is rationally designed, incorporating a C-shaped limiting block and a pulley lifting adjustment seat. Combined with a first and second adjusting screw, it allows for adjustment of the distance between the lateral portion of the C-shaped limiting block and the pulley's central axis. During installation, the pulley is positioned on the top surface of the track, and the lateral portion of the C-shaped limiting block is in the side sliding groove of the track, improving assembly stability and reliability, preventing the pulley from loosening or falling off the track. Furthermore, it can be adjusted as needed, expanding its applicability. Simultaneously, the pulley lifting adjustment seat can also be adjusted in height as required, allowing for height adjustment of the pulley's bottom edge protruding from the bottom surface of the n-shaped pulley support, meeting sliding requirements in different situations, improving stability and reliability, and demonstrating strong applicability and practicality.

[0038] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the instruction manual can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0039] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. An adjustable pulley structure for a sliding door, disposed at the bottom or top of the sliding door and capable of sliding on a slide rail, characterized in that: It includes an n-shaped pulley support, a pulley with a concave outer ring surface, a C-shaped limiting block, a first adjusting screw, a pulley lifting and adjusting seat, and a second adjusting screw; The n-shaped pulley support has an adjustment cavity with an open bottom surface in one of its vertical rods, and an adjustment groove is provided horizontally in the middle of the other vertical rod. The C-shaped limiting block is located in the adjusting cavity, and the first adjusting screw passes through the top surface of the n-shaped pulley support and is threadedly connected to the top of the C-shaped limiting block. The first adjusting screw rotates and causes the C-shaped limiting block to rise and fall. The second adjusting screw passes through the adjusting vertical groove, and the end of the pulley lifting adjusting seat is located in the adjusting vertical groove and is threadedly connected to the second adjusting screw. The rotation of the second adjusting screw causes the pulley lifting adjusting seat to rise and fall. The pulley is located in the recessed area of ​​the n-shaped pulley support and is connected to the pulley lifting adjustment seat through a shaft and bearing, and the bottom edge of the pulley protrudes from the bottom surface of the n-shaped pulley support.

2. The adjustable pulley structure for a sliding door according to claim 1, characterized in that: The pulley lifting adjustment seat includes a circular panel and an adjustment support block integrally formed on the edge of the circular panel; The adjusting support block is located in the adjusting vertical groove and is threadedly connected to the second adjusting screw. The shaft passes through the center of the circular panel and is connected to the bearing.

3. The adjustable pulley structure for a sliding door according to claim 2, characterized in that: The height of the adjusting support block is less than the height of the adjusting vertical groove.

4. The adjustable pulley structure for a sliding door according to claim 1, characterized in that: The two ends of the second adjusting screw are smooth surfaces, which are located at both ends of the adjusting vertical groove, and the second adjusting screw is limited within the adjusting vertical groove by a limiting snap ring.

5. The adjustable pulley structure for a sliding door according to claim 1, characterized in that: A buffer spring is provided between the top of the vertical rod of the C-shaped limiting block and the top wall of the adjusting cavity, and the first adjusting screw passes through the buffer spring.

6. The adjustable pulley structure for a sliding door according to claim 1, characterized in that: The symmetrical sides of the n-shaped pulley support are provided with decorative protective support covers.

7. The adjustable pulley structure for a sliding door according to claim 1, characterized in that: The side of the n-shaped pulley support is fixed with a pressure plate by screws; The pressure plate and the n-shaped pulley support clamp the symmetrical side of the sliding door, and the screws pass through the sliding door for positioning.

8. The adjustable pulley structure for a sliding door according to claim 1, characterized in that: Both the C-shaped limiting block and the pulley lifting adjustment seat are made of stainless steel.

9. The adjustable pulley structure for a sliding door according to claim 1, characterized in that: The slide rail has a side translation groove, the pulley is rolled on the top surface of the slide rail, and the lower lateral part of the C-shaped limiting block is translated into the side translation groove of the slide rail.

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