A lightweight slide rail
By setting two sets of appropriately sized ball bearing assemblies and a guide and limiting structure in the slide rail, the problems of slide rail jamming and high cost are solved, achieving a lightweight, stable and low-cost slide rail design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI CHUANGCHEN COMM TECH CO LTD
- Filing Date
- 2025-10-10
- Publication Date
- 2026-07-07
AI Technical Summary
In existing slide rail structures, collision deformation at the end of the ball bearing frame can cause jamming, and the production cost and weight are too high.
The design incorporates a lightweight slide rail structure with two sets of ball bearing assemblies whose lengths are less than the effective travel of the fixed and movable rails. Ball bearing assemblies are placed at the front end of the fixed rail and the end of the movable rail. Combined with guide blocks and connecting plates, self-locking and limiting are achieved through guide posts.
This reduces the production cost and weight of the slide rail, while ensuring its stability and coaxiality during extension and retraction, preventing jamming and improving operational stability.
Smart Images
Figure CN224469498U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of slide rail technology, specifically a lightweight slide rail. Background Technology
[0002] Currently, to reduce the relative sliding friction between slide rails, multiple rows of ball bearings are typically embedded between the contact surfaces of adjacent rails. This ensures smoother relative sliding between different rails and reduces damage to the slide rails from mutual friction. For example, in a three-section slide rail, ball bearing cages are installed between the inner and middle rails, and between the middle and outer rails, to fix and limit the ball bearings. When the corresponding ball bearing cage slides synchronously with the rail and separates from its adjacent rail, if the end of the ball bearing cage deforms due to collision, the adjacent rail will be difficult to insert accurately and quickly, causing jamming when a drawer is pulled out, resulting in inconvenience. Therefore, it is necessary to evenly distribute ball bearing cages and ball bearings along the opposite sides of the rail within its effective travel range to ensure that the rail is always in sliding contact with the ball bearings. However, this results in excessively high production costs and heavy weight for the slide rails. Utility Model Content
[0003] In view of this, the purpose of this utility model is to provide a lightweight slide rail to solve the technical problems mentioned in the prior art.
[0004] A lightweight slide rail includes a fixed rail and a movable rail that are slidably connected to each other. Two sets of ball bearing assemblies are arranged between the contact surfaces of the fixed rail and the movable rail along their extension direction. The length of both sets of ball bearing assemblies is less than the effective travel of the fixed rail and the movable rail. One set of ball bearing assemblies is located at the front end of the fixed rail, and the remaining set of ball bearing assemblies is located at the end of the movable rail.
[0005] Optionally, the slide rail is configured as a multi-segment slide rail.
[0006] Optionally, a connecting plate is installed at the end of the central side rail of the slide rail, and at least one end of the connecting plate extends to the outer periphery of the edge side rail of the slide rail where a guide block is installed, and the guide block is slidably connected to the outer periphery of the edge side rail of the slide rail.
[0007] Optionally, the guide block and the connecting plate are rotatably connected by a pin.
[0008] Optionally, the front end of the guide block is provided with a guide groove at an angle on the side away from the slide rail;
[0009] A guide post is provided on one side along the extension direction of the slide rail. When the slide rail is extended to a preset stroke, the guide post abuts against the guide groove of the guide block or drives the end of the guide block to rotate toward the edge side rail away from the slide rail.
[0010] Optionally, the ball assembly includes:
[0011] Multiple balls are rolled on opposite sides and installed in two adjacent grooves opened along the extension and retraction direction of the slide rail.
[0012] A ball bearing holder, mounted on the rail of the slide rail, is used to lock a plurality of the balls within one of the slide grooves.
[0013] The beneficial effects that this utility model can produce include:
[0014] 1. The present invention provides a lightweight slide rail, which sets the length of both sets of ball bearing assemblies to be less than the effective travel of the fixed rail and the movable rail, and sets one set of ball bearing assemblies at the front end of the fixed rail and the remaining set of ball bearing assemblies at the end of the movable rail; compared with the previous slide rail structure, it can effectively shorten the layout length of the ball bearing assemblies while ensuring that any rail body is always in contact with the ball bearing assemblies during the telescopic movement, so as to reduce the production cost and weight of the slide rail.
[0015] 2. By setting guide blocks and connecting plates, this utility model enables the guide blocks to guide and limit the entire slide rail in the extension direction (direction A) when the end of the center side rail body is inside the edge side rail body of the slide rail, thus ensuring its coaxiality and further improving the running stability of the slide rail.
[0016] 3. This utility model has a guide post for the adaptability design of the guide block. When the slide rail is stretched to the preset movement stroke, the guide post abuts against the guide groove of the guide block or drives the end of the guide block to rotate toward the edge side rail away from the slide rail, so as to realize the self-locking limit of the slide rail. At the same time, when the guide block rotates, the opening between its end and the outer periphery of the slide rail increases, which can ensure that the guide block slides smoothly to the outer periphery of the slide rail during the retraction process. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the lightweight slide rail of this utility model;
[0018] Figure 2 In this utility model Figure 1 A schematic diagram of another embodiment;
[0019] In the diagram: 1. Fixed rail, 2. Movable rail, 3. Ball bearing assembly, 4. Connecting plate, 5. Guide block, 51. Guide groove, 6. Slide groove, 7. Guide post. Direction A is the extension and retraction direction of the slide rail. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1 and Figure 2 As shown, this utility model provides a lightweight slide rail, which includes a fixed rail 1 and a movable rail 2 that are slidably connected to each other. Two sets of ball bearing assemblies 3 are arranged along the extension / retraction direction between the contact surfaces of the fixed rail 1 and the movable rail 2. The length of both sets of ball bearing assemblies 3 is less than the effective travel distance of the fixed rail 1 and the movable rail 2. One set of ball bearing assemblies 3 is located at the front end of the fixed rail 1, and the remaining set is located at the end of the movable rail 2. Compared with previous slide rail structures, this novel lightweight slide rail design can effectively shorten the length of the ball bearing assemblies 3 while ensuring that any rail body remains in contact with the ball bearing assemblies 3 during extension / retraction, thereby reducing the production cost and weight of the slide rail.
[0022] In this embodiment, as Figure 1 and Figure 2 As shown, the slide rail is configured as a three-section slide rail. It should be noted that the middle section of the slide rail is a movable rail 2 relative to its outer rail section and a fixed rail 1 relative to its inner rail section. A connecting plate 4 is installed at the end of the middle section of the slide rail, and at least one end of the connecting plate 4 extends to the outer periphery of the edge section of the slide rail, where a guide block 5 is fixedly / movably installed. The guide block 5 is slidably connected to the outer periphery of the edge section of the slide rail. This allows the slide rail to be guided and limited along the extension / retraction direction (direction A) by the guide block 5 when the end of the middle section of the slide rail is within the edge section of the slide rail, ensuring its coaxiality and further improving the operational stability of the slide rail.
[0023] In some embodiments, such as Figure 2 As shown, the guide block 5 and the connecting plate 4 are rotatably connected by a pin. The front end of the guide block 5 is inclined with a guide groove 51 on the side away from the slide rail. A guide post is provided on one side along the extension direction of the slide rail. When the slide rail is extended to the preset stroke, the guide post abuts against the guide groove 51 of the guide block 5 or drives the end of the guide block 5 to rotate toward the edge side of the slide rail away from the slide rail, so as to realize the self-locking limit of the slide rail. At the same time, when the guide block 5 rotates, the opening between its end and the outer periphery of the slide rail increases, which can ensure that the guide block 5 can slide smoothly to the outer periphery of the slide rail during the retraction process.
[0024] In the above description, the ball bearing assembly 3 includes multiple balls and a ball bearing holder (not shown in the figure). The opposing sides of the multiple balls are respectively rolled and installed in two adjacent grooves 6 opened along the extension direction of the slide rail. The ball bearing holder is fixedly installed on the slide rail body to lock the multiple balls in one of the grooves 6, achieving fixed positioning. To better meet the lightweight design requirements of the slide rail, corresponding holes can be opened at equal intervals on the slide rail body, or it can be made of lightweight materials such as aluminum alloy.
Claims
1. A lightweight slide rail, comprising a fixed rail (1) and a movable rail (2) slidably connected to each other, wherein two sets of ball bearing assemblies (3) are arranged between the contact surfaces of the fixed rail (1) and the movable rail (2) along their extension and contraction directions, characterized in that, The lengths of both sets of ball bearing assemblies (3) are less than the effective travel of the fixed rail (1) and the movable rail (2). One set of ball bearing assemblies (3) is located at the front end of the fixed rail (1), and the remaining set of ball bearing assemblies (3) is located at the end of the movable rail (2).
2. The lightweight slide rail according to claim 1, characterized in that, The slide rail is configured as a multi-segment slide rail.
3. The lightweight slide rail according to claim 1, characterized in that, A connecting plate (4) is installed at the end of the center side rail of the slide rail, and at least one end of the connecting plate (4) extends to the outer periphery of the edge side rail of the slide rail where a guide block (5) is installed, and the guide block (5) is slidably connected to the outer periphery of the edge side rail of the slide rail.
4. A lightweight slide rail according to claim 3, characterized in that, The guide block (5) and the connecting plate (4) are rotatably connected by a pin.
5. A lightweight slide rail according to claim 4, characterized in that, The front end of the guide block (5) is inclined with a guide groove (51) on the side away from the slide rail. A guide post is provided on one side of the slide rail along the extension direction. When the slide rail is extended to a preset stroke, the guide post abuts against the guide groove (51) of the guide block (5) or drives the end of the guide block (5) to rotate toward the edge side rail away from the slide rail.
6. A lightweight slide rail according to claim 1, characterized in that, The ball assembly (3) includes: Multiple balls are rolled on opposite sides and respectively installed in two adjacent grooves (6) opened along the extension and retraction direction of the slide rail; A ball holder, mounted on the rail of the slide rail, is used to lock a plurality of the balls in one of the slide grooves (6).