A side sliding door limiting structure
By combining guide rails, mounting brackets, rollers, and limiting mechanisms, along with the lubrication mechanism of electromagnets and support springs, the problem of unstable limiting of the sliding door is solved, achieving stable movement of the sliding door and smooth roller operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 青岛永强汽车配件有限公司
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-03
AI Technical Summary
Due to structural limitations, existing sliding doors often rely on their own weight for limiting movement, which can easily lead to unnecessary movement of the door.
The system employs a combination of guide rails, mounting brackets, rollers, limit holes, and limit balls. The rollers and slide rails work together to limit the sliding door, while the limit mechanism works together with an electromagnet and a support spring to conduct lubricating oil to lubricate the rollers.
This effectively prevents the sliding door from moving excessively, ensures the smoothness of the rollers, reduces rolling friction, and improves the stability and smoothness of the sliding door's movement.
Smart Images
Figure CN224452509U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sliding door technology, specifically a sliding door limiting structure. Background Technology
[0002] As is well known, sliding doors are a type of door structure that opens by sliding horizontally, and are widely used in automobiles (especially MPVs and vans), rail transportation, residential buildings, and industrial equipment. Their core advantage is saving opening space, making them suitable for narrow environments.
[0003] A utility model patent with patent authorization announcement number CN213205494U discloses a cantilevered sliding door, which includes a main gantry frame, a secondary gantry frame, and a sliding door body. The bottom plate of the main gantry frame is provided with horizontal guide wheels and vertical pulleys. The horizontal guide wheels and vertical pulleys are installed in the C-shaped guide grooves provided at the bottom of the sliding door body. The C-shaped guide grooves are used as guide rails to achieve sliding. The horizontal guide wheels position the C-shaped guide grooves, and the vertical pulleys support the weight of the sliding door. The top of the main gantry frame is provided with a horizontal limiting pulley to limit the upper part of the sliding door body. When the sliding door is pushed to the closed state, it enters the secondary gantry frame.
[0004] However, existing sliding doors also have certain drawbacks. Although existing sliding doors mostly use rollers, tracks and other structures to move and slide, due to the limitations of the door's own structure, they mostly rely on their own weight for limiting, which can easily cause unnecessary movement of the door. Utility Model Content
[0005] The purpose of this utility model is to provide a limiting structure for a sliding door, which solves the problem that although existing sliding doors mostly use rollers, slides and other structures to complete the sliding of the door, due to the limitations of the door's own structure, they mostly rely on their own weight for limiting, which easily causes unnecessary movement of the door.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a sliding door limiting structure, including a guide rail and a mounting bracket. The upper end of the guide rail is provided with a sliding groove. A roller is mounted on the upper support shaft of the mounting bracket, and the roller contacts the sliding groove. A reinforcing plate is fixedly connected to the lower support shaft of the mounting bracket. A door frame is fixedly connected to the back of the reinforcing plate. Glass is provided on the inner wall of the door frame. A limiting mechanism is provided on both the mounting bracket and the guide rail. An oil storage box is fixedly connected to the upper right side of the guide rail, and a flow hole is provided at the left end of the oil storage box.
[0007] Preferably, an electromagnet is fixedly installed on the inner left side wall of the oil storage box, a fixing column is fixedly connected to the inner side wall of the oil storage box, an iron frame is slidably connected to the inner wall of the fixing column, a sealing plate is fixedly connected to the vertical part of the iron frame, and the sealing plate is slidably connected to the oil storage box. Through the setting of the iron frame and the sealing plate, the oil storage box can be sealed.
[0008] Preferably, a support spring is fixedly connected to the horizontal part of the iron frame, and the other end of the support spring is fixedly connected to the fixed column. The iron frame can be connected and used by means of the support spring.
[0009] Preferably, the left end of the sealing plate is fixedly connected to an elastic protrusion, which is slidably connected to the flow hole. The flow hole can be sealed by the elastic protrusion.
[0010] Preferably, the limiting mechanism includes a limiting hole, a limiting hole is provided on the front of the guide rail, a connecting frame is fixedly connected between the two mounting brackets, a telescopic plate is slidably connected to the inner wall of the connecting frame, a limiting ball is fixedly connected to the back of the telescopic plate, the limiting ball is slidably connected to the limiting hole, a connecting plate is fixedly connected to the back of the telescopic plate, and a connecting spring is provided on the outer side of the telescopic plate. Through the combined use of the limiting hole, the limiting ball, and other structures, the connecting frame can be limited, thereby limiting the use of the door frame.
[0011] Preferably, there are two limiting holes, which are evenly distributed on the guide rail. The limiting holes facilitate the use of locking with limiting balls.
[0012] Preferably, one end of the connecting spring is fixedly connected to the connecting plate, and the other end of the connecting spring is fixedly connected to the connecting frame. The connecting spring allows the connecting plate to be connected for use.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] 1. This utility model, through the setting of rollers, slide rails, mounting brackets and other structures, can hoist and slide the side sliding door. Under the action of limiting holes, limiting balls and other structures, the mounting bracket can be limited, thereby limiting the position of the side sliding door and avoiding the problem of additional movement of the side sliding door.
[0015] 2. This utility model uses a combination of electromagnet, iron frame, support spring and other structures to allow the elastic protrusion to disengage from the flow hole, conduct the lubricating oil, and allow the lubricating oil to flow into the slide groove, thereby lubricating the roller and ensuring the smooth rolling of the roller. Attached Figure Description
[0016] Figure 1This is a three-dimensional view of the overall structure of this utility model;
[0017] Figure 2 For the present utility model Figure 1 Top view;
[0018] Figure 3 For the present utility model Figure 1 A front sectional view;
[0019] Figure 4 For the present utility model Figure 3 Enlarged view of the oil reservoir;
[0020] Figure 5 For the present utility model Figure 2 Enlarged view of point A.
[0021] In the diagram: 1. Guide rail; 2. Mounting bracket; 3. Slide groove; 4. Roller; 5. Reinforcing plate; 6. Door frame; 7. Glass; 8. Limiting mechanism; 9. Oil reservoir; 10. Flow hole; 11. Electromagnet; 12. Fixing column; 13. Iron frame; 14. Support spring; 15. Sealing plate; 16. Elastic protrusion; 80. Limiting hole; 81. Connecting frame; 82. Telescopic plate; 83. Limiting ball; 84. Connecting plate; 85. Connecting spring. Detailed Implementation
[0022] 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.
[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A sliding door limiting structure includes a guide rail 1 and a mounting bracket 2. The upper end of the guide rail 1 is provided with a sliding groove 3. A roller 4 is installed on the upper support shaft of the mounting bracket 2. The roller 4 contacts the sliding groove 3. A reinforcing plate 5 is fixedly connected to the lower support shaft of the mounting bracket 2. A door frame 6 is fixedly connected to the back of the reinforcing plate 5. A glass 7 is provided on the inner wall of the door frame 6. An oil storage box 9 is fixedly connected to the upper right side of the guide rail 1. A flow hole 10 is provided on the left end of the oil storage box 9.
[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4An electromagnet 11 is fixedly installed on the inner left side wall of the oil storage box 9. A fixing column 12 is fixedly connected to the inner side wall of the oil storage box 9. An iron frame 13 is slidably connected to the inner wall of the fixing column 12. A sealing plate 15 is fixedly connected to the vertical part of the iron frame 13. The sealing plate 15 is slidably connected to the oil storage box 9. The oil storage box 9 can be sealed by the iron frame 13 and the sealing plate 15.
[0025] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 A support spring 14 is fixedly connected to the horizontal part of the iron frame 13. The other end of the support spring 14 is fixedly connected to the fixed column 12. The iron frame 13 can be connected and used through the setting of the support spring 14. An elastic protrusion 16 is fixedly connected to the left end of the sealing plate 15. The elastic protrusion 16 is slidably connected to the flow hole 10. The flow hole 10 can be blocked through the setting of the elastic protrusion 16.
[0026] Please see Figure 1 , Figure 2 , Figure 3 , Figure 5 A limiting mechanism 8 is provided on both the mounting bracket 2 and the guide rail 1. The limiting mechanism 8 includes a limiting hole 80. The limiting hole 80 is opened on the front of the guide rail 1. A connecting frame 81 is fixedly connected between the two mounting brackets 2. A telescopic plate 82 is slidably connected to the inner wall of the connecting frame 81. A limiting ball 83 is fixedly connected to the back of the telescopic plate 82. The limiting ball 83 is slidably connected to the limiting hole 80. A connecting plate 84 is fixedly connected to the back of the telescopic plate 82. A connecting spring 85 is provided on the outer side of the telescopic plate 82. Through the cooperation of the limiting hole 80, the limiting ball 83 and other structures, the connecting frame 81 can be limited, thereby limiting the use of the door frame 6.
[0027] Please see Figure 1 , Figure 2 , Figure 3 , Figure 5 There are two limiting holes 80, which are evenly distributed on the guide rail 1. The limiting holes 80 facilitate the use of the limiting ball 83 for snap-fit. One end of the connecting spring 85 is fixedly connected to the connecting plate 84, and the other end of the connecting spring 85 is fixedly connected to the connecting frame 81. The connecting spring 85 can be used to connect the connecting plate 84.
[0028] The specific implementation process of this utility model is as follows: In use, the door frame 6 and glass 7 can be moved by the cooperation of roller 4, slide 3, and mounting bracket 2, thereby enabling the side sliding door to move sideways. When the mounting bracket 2 moves, it can drive the connecting frame 81 to move, causing the telescopic plate 82 to move, which in turn drives the limiting ball 83 to move. Under the pressure of the inner wall of the limiting hole 80, the limiting ball 83 can be pushed to move, and the connecting plate 84 can be moved, causing the connecting spring 85 to deform. Finally, the limiting ball 83 is disengaged from the limiting hole 80. Under the action of force, the limiting ball 83 slides along the surface of the guide rail 1. When the limiting ball 83 slides into the next limiting hole 80, the connecting spring 85 returns to its original deformation, thereby pulling the limiting ball 83 to insert into the limiting hole 80, limiting the movement of the connecting frame 81, and thus limiting the use of the door frame 6 and glass 7.
[0029] When the electromagnet 11 is powered on, it generates a strong magnetic force, which can magnetically attract the iron frame 13, causing the iron frame 13 to move upward. This causes the support spring 14 to deform, which in turn moves the sealing plate 15, and then moves the elastic protrusion 16. Under the pressure of the inner wall of the flow hole 10, the elastic protrusion 16 deforms and eventually detaches from the flow hole 10. Under the action of the flow hole 10, the lubricating oil can be guided to flow into the slide groove 3, which facilitates the subsequent lubrication of the roller 4, thereby reducing the rolling friction of the roller 4 and ensuring the smooth movement of the roller 4.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A side sliding door limiting structure comprising a guide rail (1) and a mounting frame (2), characterized in that: The upper end of the guide rail (1) is provided with a sliding groove (3). The upper support shaft of the mounting bracket (2) is equipped with a roller (4). The roller (4) contacts the sliding groove (3). The lower support shaft of the mounting bracket (2) is fixedly connected with a reinforcing plate (5). The back of the reinforcing plate (5) is fixedly connected with a door frame (6). The inner wall of the door frame (6) is provided with glass (7). The mounting bracket (2) and the guide rail (1) are jointly provided with a limit mechanism (8). The upper right side of the guide rail (1) is fixedly connected with an oil storage box (9). The left end of the oil storage box (9) is provided with a flow hole (10).
2. The side sliding door limiting structure according to claim 1, wherein: An electromagnet (11) is fixedly installed on the inner left side wall of the oil storage box (9). A fixed column (12) is fixedly connected to the inner side wall of the oil storage box (9). An iron frame (13) is slidably connected to the inner wall of the fixed column (12). A sealing plate (15) is fixedly connected to the vertical part of the iron frame (13). The sealing plate (15) is slidably connected to the oil storage box (9).
3. The side sliding door limiting structure according to claim 2, characterized in that: The horizontal part of the iron frame (13) is fixedly connected to a support spring (14), and the other end of the support spring (14) is fixedly connected to a fixed column (12).
4. The side sliding door check structure according to claim 2, wherein: The left end of the sealing plate (15) is fixedly connected to an elastic protrusion (16), which is slidably connected to the flow hole (10).
5. The side sliding door check structure according to claim 1, wherein: The limiting mechanism (8) includes a limiting hole (80). The guide rail (1) has a limiting hole (80) on its front side. A connecting frame (81) is fixedly connected between the two mounting brackets (2). A telescopic plate (82) is slidably connected to the inner wall of the connecting frame (81). A limiting ball (83) is fixedly connected to the back of the telescopic plate (82). The limiting ball (83) is slidably connected to the limiting hole (80). A connecting plate (84) is fixedly connected to the back of the telescopic plate (82). A connecting spring (85) is provided on the outer side of the telescopic plate (82).
6. The side sliding door check structure according to claim 5, wherein: Two limiting holes (80) are provided, and the two limiting holes (80) are evenly distributed on the guide rail (1).
7. The side sliding door check structure according to claim 5, wherein: One end of the connecting spring (85) is fixedly connected to the connecting plate (84), and the other end of the connecting spring (85) is fixedly connected to the connecting frame (81).