Secondary telescopic sliding rail of seat leg support
By designing a two-stage telescopic slide rail for the seat leg rest, and using ball bearings and limit blocks to control the sliding, the problem of insufficient extension stroke of the seat leg rest was solved, achieving a larger extension stroke and higher comfort.
Patent Information
- Application Number
- CN202520482115.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-19
AI Technical Summary
Existing car seat leg rest rails suffer from insufficient extension range due to space limitations, affecting comfort.
Design a two-stage telescopic slide rail for a seat leg rest. The track, primary slide rail and secondary slide rail are fixed by bolt connection. Ball bearings are used to reduce friction and the sliding distance is controlled by baffles and limit blocks to achieve two-stage telescopic movement.
The leg rest extension travel is increased within the same space, improving riding comfort. Compared with a single-stage slide rail, the extension travel is increased by 90%.
Smart Images
Figure CN223821546U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of automobile seat leg support, specifically a seat leg support two-stage telescopic slide rail. BACKGROUND
[0002] The automobile seat leg support slide rail is a driving comfort configuration article. In conventional design, due to the limitation of the whole vehicle space, especially the battery pack installation of new energy vehicles, the floor is higher than that of traditional energy vehicles, further reducing the seat leg support space. The current leg support uses a one-stage stroke slide rail, which cannot meet the leg support extension stroke, affecting the leg support comfort.
[0003] Based on this, a seat leg support two-stage telescopic slide rail is provided, which can eliminate the drawbacks of the existing device. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a seat leg support two-stage telescopic slide rail to solve the shortcomings of the modern product in the background art.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] A seat leg support two-stage telescopic slide rail, comprising a fixed rail, a first-stage slide rail and a second-stage slide rail, the fixed rail is installed in the automobile interior through bolts, the second-stage slide rail is connected with the automobile seat through bolts, the fixed rail is slidably connected with the first-stage slide rail on the inner side wall, the first-stage slide rail is slidably connected with the second-stage slide rail on the inner side wall, the fixed rail, the first-stage slide rail and the second-stage slide rail are all "concave" shaped, a plurality of first balls are arranged on the inner side wall of the fixed rail, a plurality of second balls are arranged on the inner side wall of the first-stage slide rail.
[0007] On the basis of the above technical scheme, the utility model also provides the following optional technical scheme:
[0008] In an optional scheme, the inner side wall of the fixed rail is fixedly connected with a first limiting block, and the lower surface of the first-stage slide rail is provided with a third baffle.
[0009] In an optional scheme, the lower surface of the second-stage slide rail is provided with a first baffle and a second baffle.
[0010] In an optional scheme, the fixed rail, the first-stage slide rail and the second-stage slide rail are all provided with chamfers.
[0011] In an optional scheme, the side walls of the fixed rail, the first-stage slide rail and the second-stage slide rail are all provided with curved radii.
[0012] Compared with the prior art, the utility model has the following advantages:
[0013] The utility model discloses a new design automobile seat leg support two -stage telescopic slide rail mechanism, achieve the same space in increasing leg support extension stroke, can be applied to long -stroke leg support structure, make leg support more support comfort, relative to other leg support slide rail's first stroke, leg support two -stage telescopic slide rail is the secondary extension of increasing leg support extension stroke, whole structure can make leg support extension increase 90% stroke. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the structural schematic diagram of the utility model.
[0015] Figure 2 It is the first visual angle diagram of two -stage slide rail of the utility model rises and contracts.
[0016] Figure 3 It is the second visual angle diagram of two -stage slide rail of the utility model rises and contracts.
[0017] Figure 4 It is the structural schematic diagram of one -stage slide rail of the utility model.
[0018] Figure 5 It is the structural schematic diagram of two -stage slide rail of the utility model.
[0019] Figure mark annotation: 1 fixed track, 2 one -stage slide rail, 3 two -stage slide rail, 4 first ball, 5 second ball, 6 first limit block, 7 second limit block, 8 first baffle, 9 second baffle, 10 third baffle, 11 third limit block. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is combined with the drawings and example, and the utility model is further explained in detail.
[0021] In one embodiment, as shown in Figures 1-5 A seat leg support two -stage telescopic slide rail includes fixed track 1, one -stage slide rail 2, two -stage slide rail 3, fixed track 1 is installed in the automobile interior by bolt, two -stage slide rail 3 is connected with the automobile seat by bolt, the inner wall of fixed track 1 is slidably connected with one -stage slide rail 2, the inner wall of one -stage slide rail 2 is slidably connected with two -stage slide rail 3, fixed track 1, one -stage slide rail 2, two -stage slide rail 3 are all "concave" shape, the inner wall of fixed track 1 is provided with a plurality of first balls 4, the inner wall of one -stage slide rail 2 is provided with a plurality of second balls 5.
[0022] By first ball 4, the friction between fixed track 1 and one -stage slide rail 2, one -stage slide rail 2 and two -stage slide rail 3 is reduced, so that the sliding process of one -stage slide rail 2, two -stage slide rail 3 is more smooth.
[0023] In one embodiment, the first limiting block 6 is fixedly connected to the inner side wall of the fixed rail 1, and the third baffle 10 is arranged on the lower surface of the first sliding rail 2. The third baffle 10 is used for limiting the first sliding rail 2 and the second sliding rail 3.
[0024] In one embodiment, the first baffle 8 and the second baffle 9 are arranged on the lower surface of the second sliding rail 3.
[0025] The first baffle 8 and the second baffle 9 are used for controlling the sliding distance of the second sliding rail 3 to avoid sliding off.
[0026] In one embodiment, the fixed rail 1, the first sliding rail 2 and the second sliding rail 3 are all provided with chamfers.
[0027] In one embodiment, the side walls of the fixed rail 1, the first sliding rail 2 and the second sliding rail 3 are all provided with curved radii.
[0028] The curved side walls of the fixed rail 1, the first sliding rail 2 and the second sliding rail 3 can longitudinally limit the first sliding rail 2 and the second sliding rail 3.
[0029] The above embodiment discloses a seat leg support two-stage telescopic sliding rail, and the specific working principle and process are as follows:
[0030] S1: Under the driving of the telescopic motor, the second sliding rail 3 performs a first-stage extension movement in the first sliding rail 2, and when the second baffle 9 of the second sliding rail 3 collides with the second limiting block 7, the first-stage extension movement is completed.
[0031] S2: Under the driving of the telescopic motor, the first sliding rail 2 performs a second-stage extension movement in the fixed rail 1, and when the third baffle 10 of the first sliding rail 2 collides with the third limiting block 11, the second-stage extension movement is completed, and the extension movement is completed.
[0032] S3: Under the driving of the telescopic motor, the second sliding rail 3 performs a first-stage retraction movement in the first sliding rail 2, and when the first baffle 8 of the second sliding rail 3 collides with the second limiting block 7, the first-stage retraction movement is completed.
[0033] S4: Under the driving of the telescopic motor, the first sliding rail 2 performs a second-stage retraction movement in the fixed rail 1, and when the third baffle 10 of the first sliding rail 2 collides with the first limiting block 6, the second-stage retraction movement is completed, and the retraction movement is completed.
[0034] The first ball 4 reduces the friction between the fixed rail 1 and the first sliding rail 2 and between the first sliding rail 2 and the second sliding rail 3, so that the sliding process of the first sliding rail 2 and the second sliding rail 3 is smoother.
[0035] When the seat shape and space are fixed, the current most single-stage slide rail stroke does not meet the seat leg support extension distance, so that the legs of the passenger are not fully supported, affecting the riding comfort. This design enables the seat leg support to increase the use stroke through a two-stage slide rail in the same space layout, achieving the purpose of increasing the riding comfort.
[0036] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A two-stage telescopic slide rail for a seat leg rest, characterized in that, The system includes a fixed track (1), a primary slide rail (2), and a secondary slide rail (3). The fixed track (1) is installed inside the car by bolts, and the secondary slide rail (3) is connected to the car seat by bolts. The primary slide rail (2) is slidably connected to the inner wall of the fixed track (1), and the secondary slide rail (3) is slidably connected to the inner wall of the primary slide rail (2). The fixed track (1), the primary slide rail (2), and the secondary slide rail (3) are all U-shaped. The inner wall of the fixed track (1) is provided with a number of first ball bearings (4), and the inner wall of the primary slide rail (2) is provided with a number of second ball bearings (5).
2. The two-stage telescopic slide rail for a seat leg rest according to claim 1, characterized in that, The inner wall of the fixed track (1) is fixedly connected to a first limiting block (6), and the lower surface of the first-stage slide rail (2) is provided with a third baffle (10).
3. The two-stage telescopic slide rail for a seat leg rest according to claim 1, characterized in that, The lower surface of the secondary slide rail (3) is provided with a first baffle (8) and a second baffle (9).
4. The two-stage telescopic slide rail for a seat leg rest according to claim 1, characterized in that, The fixed track (1), the first-level slide rail (2), and the second-level slide rail (3) are all equipped with chamfers.
5. The two-stage telescopic slide rail for a seat leg rest according to claim 1, characterized in that, The side walls of the fixed track (1), the first-level slide rail (2), and the second-level slide rail (3) are all provided with curved arcs.