Four-bar linkage structure for lifting seat and automobile cushion
By combining a four-bar linkage structure and a rotating component, the problem of high cost in existing seat lifting structures is solved, achieving a low-cost, simplified seat cushion lifting effect.
Patent Information
- Application Number
- CN202520463297.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Existing car seat lifting structures have high production costs and complex structures, and the motor occupies space under the seat cushion, affecting the installation of other components.
It adopts a four-bar linkage structure, including a base, front linkage, seat cushion, transmission rod, rear linkage and rotating assembly. The height of the seat cushion is adjusted by rotating the transmission rod through the rotating assembly. The seat cushion is raised and lowered by the meshing of the handle, shaft, gear and toothed plate, which simplifies the structure.
It achieves low-cost seat cushion lifting, simplifies structural design, reduces production costs, and does not take up space at the bottom of the seat cushion.
Smart Images
Figure CN223835452U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive seat technology, and in particular to a four-link structure for lifting automotive seat cushions. Background Technology
[0002] With users demanding higher levels of comfort and functionality from car seats, many automakers are focusing on in-car entertainment spaces, designing car seats to be able to fold down at a large angle. For the front passenger seat, many models feature backrests that can fold forward and flatten, using a seat cushion lifting mechanism to lower the cushion, creating a double bed-like configuration with the second-row seats, providing a more comfortable leisure and entertainment space.
[0003] In existing car seats, the seat cushion lifting mechanism mainly includes the following types: the slide type, which uses dual motors on the left and right sides of the seat frame to ensure the synchronization of the left and right sides, but it is costly, complex in structure, and the motor occupies the space at the bottom of the seat cushion, which can easily affect the installation of other components. Utility Model Content
[0004] The purpose of this utility model is to provide a four-link structure for lifting car seat cushions, which aims to solve the problem of high production costs of existing car seat lifting structures.
[0005] To achieve the above objectives, this utility model provides a four-link structure for lifting a car seat cushion, including a base, two front links, a seat cushion, a transmission rod, a rear link, and a rotating assembly. The two front links are rotatably connected to the base and are both located on the base. The seat cushion is rotatably connected to the two front links and is located on the two front links. The transmission rod is rotatably connected to the seat cushion and is located on the seat cushion. The rear link is rotatably connected to the base and also rotatably connected to the transmission rod, and is located between the base and the transmission rod. The rotating assembly is connected to the transmission rod and installed on the seat cushion.
[0006] The rotating assembly includes a handle, a rotating shaft, a gear, and a toothed plate. The rotating shaft is rotatably connected to the seat cushion and is located on the seat cushion. The handle is installed on one side of the rotating shaft. The gear is fixedly connected to the rotating shaft and is located on one side of the rotating shaft. The toothed plate meshes with the gear and is fixedly connected to the transmission rod.
[0007] The handle includes a turntable, a connecting rod, and a rotating handle. The turntable is fixedly connected to the rotating shaft and located on one side of the rotating shaft. The connecting rod is fixedly connected to the turntable and located on one side of the turntable. The rotating handle is fixedly connected to the connecting rod and located on the side of the connecting rod away from the turntable.
[0008] The four-link structure for lifting the car seat cushion also includes two mounting components, both of which are installed at the front end of the seat cushion.
[0009] The mounting assembly includes a connecting frame and a mounting plate. The connecting frame is fixedly connected to the seat cushion and is located at the front end of the seat cushion. The mounting plate is fixedly connected to the connecting frame and is located on the side of the connecting frame away from the seat cushion.
[0010] This utility model discloses a four-link structure for adjusting a car seat cushion. The base provides mounting conditions for the two front links, the rear link, the transmission rod, and the rotating assembly. When the height of the seat cushion needs to be adjusted, the rotating assembly is rotated, which drives the transmission rod to rotate. The transmission rod moves the seat cushion away from the base, while the two front links and the rear link rotate on the base, supporting the seat cushion until it is adjusted to the preset position. This completes the adjustment of the seat cushion. This utility model has a simple structure and low production cost, thus solving the problem of high production cost of existing car seat lifting structures. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0012] Figure 1 This is a schematic diagram of a four-link lifting structure for a car seat cushion according to this utility model.
[0013] Figure 2 This is a schematic diagram of the four-link lifting structure for a car seat cushion of this utility model from another direction.
[0014] In the diagram: 1-base, 2-front connecting rod, 3-seat cushion, 4-drive rod, 5-rear connecting rod, 6-shaft, 7-gear, 8-tooth plate, 9-turntable, 10-connecting rod, 11-handle, 12-connecting frame, 13-mounting plate. Detailed Implementation
[0015] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0016] Please see Figures 1-2This utility model provides a four-link structure for lifting car seat cushions, including a base 1, two front links 2, a seat cushion 3, a transmission rod 4, a rear link 5, and a rotating assembly. The two front links 2 are rotatably connected to the base 1 and are both located on the base 1. The seat cushion 3 is rotatably connected to the two front links 2 and is located on the two front links 2. The transmission rod 4 is rotatably connected to the seat cushion 3 and is located on the seat cushion 3. The rear link 5 is rotatably connected to the base 1 and rotatably connected to the transmission rod 4, and is located between the base 1 and the transmission rod 4. The rotating assembly is connected to the transmission rod 4 and installed on the seat cushion 3.
[0017] In this embodiment, the base 1 provides installation conditions for the two front connecting rods 2, the rear connecting rod 5, the transmission rod 4, and the rotating assembly. When the height of the seat cushion 3 needs to be adjusted, the rotating assembly is rotated, which drives the transmission rod 4 to rotate. The transmission rod 4 drives the seat cushion 3 to move away from the base 1. At the same time, the two front connecting rods 2 and the rear connecting rod 5 rotate on the base 1, supporting the seat cushion 3 until the seat cushion 3 is adjusted to the preset position, thus completing the adjustment of the seat cushion 3. This utility model has a simple structure and low production cost, thereby solving the problem of high production cost of existing car seat lifting structures.
[0018] Furthermore, the rotating assembly includes a handle, a rotating shaft 6, a gear 7, and a toothed plate 8. The rotating shaft 6 is rotatably connected to the seat cushion 3 and is located on the seat cushion 3. The handle is installed on one side of the rotating shaft 6. The gear 7 is fixedly connected to the rotating shaft 6 and is located on one side of the rotating shaft 6. The toothed plate 8 meshes with the gear 7 and is fixedly connected to the transmission rod 4.
[0019] In this embodiment, rotating the handle can drive the rotating shaft 6 to rotate, which in turn drives the gear 7 to rotate, which in turn drives the toothed plate 8 to rotate, and the toothed plate 8 to rotate, which in turn drives the transmission rod 4 to rotate.
[0020] Furthermore, the handle includes a turntable 9, a connecting rod 10, and a rotating handle 11. The turntable 9 is fixedly connected to the rotating shaft 6 and is located on one side of the rotating shaft 6. The connecting rod 10 is fixedly connected to the turntable 9 and is located on one side of the turntable 9. The rotating handle 11 is fixedly connected to the connecting rod 10 and is located on the side of the connecting rod 10 away from the turntable 9.
[0021] In this embodiment, the turntable 9 can be rotated by holding the handle 11. The handle 11 and the turntable 9 can be connected by the connecting rod 10. The rotation of the turntable 9 can drive the rotating shaft 6 to rotate.
[0022] Furthermore, the four-link structure for lifting the car seat cushion also includes two mounting components, both of which are mounted on the front end of the seat cushion 3.
[0023] In this embodiment, the seat can be extended with devices such as leg rests using the two mounting components.
[0024] Furthermore, the mounting assembly includes a connecting frame 12 and a mounting plate 13. The connecting frame 12 is fixedly connected to the seat cushion 3 and is located at the front end of the seat cushion 3. The mounting plate 13 is fixedly connected to the connecting frame 12 and is located on the side of the connecting frame 12 away from the seat cushion 3.
[0025] In this embodiment, the connecting frame 12 provides installation conditions for the mounting plate 13, through which devices such as extended leg supports can be installed.
[0026] When the height of the seat cushion 3 needs to be adjusted, the handle 11 is held to rotate the turntable 9. The turntable 9 drives the rotating shaft 6 to rotate, the rotating shaft 6 drives the gear 7 to rotate, the gear 7 drives the toothed plate 8 to rotate, the toothed plate 8 drives the transmission rod 4 to rotate, and the transmission rod 4 drives the seat cushion 3 to move away from the base 1. At the same time, the two front connecting rods 2 and the rear connecting rod 5 rotate on the base 1, supporting the seat cushion 3 until the seat cushion 3 is adjusted to the preset position, thus completing the adjustment of the seat cushion 3. This utility model has a simple structure and low production cost, thereby solving the problem of high production cost of existing car seat lifting structures.
[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A four-link structure for lifting car seat cushions, characterized in that, Includes a base, two front linkages, a seat, a drive rod, a rear linkage, and a rotating assembly; The two front connecting rods are rotatably connected to the base and are both located on the base. The seat cushion is rotatably connected to the two front connecting rods and is located on the two front connecting rods. The transmission rod is rotatably connected to the seat cushion and is located on the seat cushion. The rear connecting rod is rotatably connected to the base and rotatably connected to the transmission rod and is located between the base and the transmission rod. The rotating assembly is connected to the transmission rod and is installed on the seat cushion.
2. The four-link structure for lifting car seat cushions as described in claim 1, characterized in that, The rotating assembly includes a handle, a rotating shaft, a gear, and a toothed plate. The rotating shaft is rotatably connected to the seat cushion and is located on the seat cushion. The handle is mounted on one side of the rotating shaft. The gear is fixedly connected to the rotating shaft and is located on one side of the rotating shaft. The toothed plate meshes with the gear and is fixedly connected to the transmission rod.
3. The four-link structure for lifting car seat cushions as described in claim 2, characterized in that, The handle includes a turntable, a connecting rod, and a rotating handle. The turntable is fixedly connected to the rotating shaft and is located on one side of the rotating shaft. The connecting rod is fixedly connected to the turntable and is located on one side of the turntable. The rotating handle is fixedly connected to the connecting rod and is located on the side of the connecting rod away from the turntable.
4. The four-link structure for lifting car seat cushions as described in claim 1, characterized in that, The four-link structure for lifting the car seat cushion also includes two mounting components, both of which are mounted on the front end of the seat cushion.
5. The four-link structure for lifting car seat cushions as described in claim 4, characterized in that, The mounting assembly includes a connecting frame and a mounting plate. The connecting frame is fixedly connected to the seat cushion and is located at the front end of the seat cushion. The mounting plate is fixedly connected to the connecting frame and is located on the side of the connecting frame away from the seat cushion.