Back row sitting and leaning linkage automobile seat framework
By using a sliding rail assembly and linkage design, the rear seat backrests can be tilted back and adjusted to a large angle, solving the problem of the inability to adjust the rear seats in existing technologies and improving the adjustment performance and economy of the seats.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHU RUITAI AUTO PARTS
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-12
AI Technical Summary
In the existing technology, the rear seat backrest cannot be adjusted backward, and the seat cushion cannot drive the backrest to tilt and rotate, which cannot meet the customer's demand for large-angle adjustment of the rear seat.
Design a car seat frame with rear seat and backrest linkage. The seat cushion slides back and forth through a sliding rail assembly, and the backrest frame is connected to the connecting plate by a linkage to realize the linkage adjustment of the backrest and seat cushion.
It enables the rear seat backrests to recline backward, with a wider adjustment angle, a simpler structure, better economy, and improved seat strength.
Smart Images

Figure CN224224929U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive seat technology, and in particular relates to an automotive seat frame with rear seat back linkage. Background Technology
[0002] As an important component of a car, car seats provide passengers with a safe and comfortable seating position. However, as customers' requirements for car comfort continue to increase, the ability of only the front and middle row seats to be adjusted and unfolded is no longer sufficient to meet the needs of most customers. There is an urgent need for a car seat frame that allows the rear seats to be adjusted and unfolded, even at a large angle.
[0003] Due to limitations in vehicle structure and space, current rear seatbacks can only fold forward and not adjust backward. To achieve rear seatback adjustment, the seat cushion needs to move forward to tilt and rotate the backrest. However, with existing technology, the rear seat cushion cannot move forward or backward, let alone tilt and rotate the backrest. Therefore, it is necessary to design a seat frame structure that is simple in structure yet allows the rear seatbacks to tilt backward. Utility Model Content
[0004] This utility model provides a car seat frame with rear seat back linkage, which aims to solve the problems mentioned in the background art.
[0005] This utility model is implemented as follows: a car seat frame with rear seat and backrest linkage, including a slide rail assembly, a seat cushion frame, a backrest frame, a connecting rod, and a connecting plate.
[0006] The slide rail assembly is located at the lower end of the seat cushion frame. The slide rail assembly is used to drive the seat cushion frame to slide back and forth. The upper end of the seat cushion frame is connected to the backrest frame. The upper end of the backrest frame is connected to the connecting plate through the connecting rod. The connecting plate is installed and fixed on the vehicle frame.
[0007] Preferably, the slide rail assembly includes a slide rail and a slider, the slider being slidably connected to the slide rail, and the seat cushion frame being fixedly connected to the slider.
[0008] Preferably, the seat cushion frame is rotatably connected to the backrest frame.
[0009] Preferably, one end of the connecting rod is rotatably connected to the backrest frame, and the other end is rotatably connected to the connecting plate.
[0010] Preferably, when the seat needs to be adjusted, the slider in the slide rail assembly drives the seat cushion frame to slide forward in the slide rail. At this time, the lower end of the backrest frame is driven to move forward synchronously, while the upper end of the backrest frame is unable to move forward due to the pull of the connecting plate. The upper end of the backrest frame moves downward through the connecting rod, and the tilt angle of the seat back increases.
[0011] Preferred,
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. The rear seat frame with seat-back linkage provided by this utility model is connected by rotating the seat cushion and backrest, and the backrest is fixed to the vehicle body by a connecting rod. This is different from the design of most current seats that use an angle adjuster core component to achieve backrest adjustment. The frame structure is also simpler. Therefore, this utility model is more economical.
[0014] 2. The rear seat frame with seat-back linkage provided by this utility model is used. The backrest is fixed to the vehicle body by a connecting rod and a connecting plate, so that the seat and backrest can be adjusted to a greater angle.
[0015] 3. The rear seat frame with seat-back linkage provided by this utility model has a certain degree of fixation at both the upper and lower ends of the backrest frame, making the strength of the seat greater than that of conventional seats on the market. Attached Figure Description
[0016] Figure 1 This is an exploded perspective view of the overall structure of this utility model;
[0017] Figure 2 This is a perspective view of the overall structure of this utility model;
[0018] Figure 3 This is a side view of the overall structure of this utility model in a normal riding posture;
[0019] Figure 4 This is a side view of the overall structure of this utility model with the backrest tilted at an increased angle.
[0020] In the picture:
[0021] 1. Slide rail assembly; 2. Seat cushion frame; 3. Backrest frame; 4. Connecting rod; 5. Connecting plate. Detailed Implementation
[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0023] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0024] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] Please see Figures 1 to 4 This utility model provides a technical solution: a car seat frame with rear seat and backrest linkage, including a slide rail assembly 1, a seat cushion frame 2, a backrest frame 3, a connecting rod 4 and a connecting plate 5; the slide rail assembly 1 is located at the lower end of the seat cushion frame 2, and the slide rail assembly 1 is used to drive the seat cushion frame 2 to slide back and forth, the upper end of the seat cushion frame 2 is connected to the backrest frame 3, the upper end of the backrest frame 3 is connected to the connecting plate 5 through the connecting rod 4, and the connecting plate 5 is installed and fixed on the vehicle frame.
[0028] Furthermore, the slide rail assembly 1 includes a slide rail and a slider, the slider being slidably connected to the slide rail, and the seat cushion frame 2 being fixedly connected to the slider.
[0029] For further details, please refer to Figure 3 and Figure 4 The seat cushion frame 2 and the backrest frame 3 are rotatably connected.
[0030] For further details, please refer to Figure 3 and Figure 4 One end of the connecting rod 4 is rotatably connected to the backrest frame 3, and the other end is rotatably connected to the connecting plate 5.
[0031] In this embodiment, the slider in the slide rail assembly 1 is fixedly connected to the lower end of the seat cushion frame 2 by bolts. The upper end of the seat cushion frame 2 is connected to the backrest frame 3 by a rotating pin. The upper end of the backrest frame 3 is then connected to the connecting plate 5 by a connecting rod 4. The connecting plate 5 is installed and fixed on the vehicle frame. The slide rail assembly 1 is also assembled and fixed on the vehicle body.
[0032] Please see Figure 3 and Figure 4 When the seat back tilt angle needs to be increased, the slide rail assembly 1 operates. The slider in the slide rail assembly 1 drives the seat cushion frame 2 to slide forward in the slide rail. At this time, the lower end of the backrest frame 3 is driven to move forward synchronously, while the upper end of the backrest frame 3 is unable to move forward due to the pull of the connecting plate 5. At this time, the upper end of the backrest frame 3 moves downward through the connecting rod 4, and the seat back tilt angle increases. When the tilt is reached to the required angle, the slide rail assembly 1 stops operating.
[0033] When the seat back tilt angle needs to be reduced, the slide rail assembly 1 operates. The slider in the slide rail assembly 1 drives the seat cushion frame 2 to slide backward in the slide rail. At this time, the lower end of the backrest frame 3 is driven to move backward synchronously. Meanwhile, the upper end of the backrest frame 3 is unable to move forward due to the pull of the connecting plate 5. At this time, the upper end of the backrest frame 3 moves upward through the connecting rod 4, and the seat back tilt angle decreases. When the required angle is reached, the slide rail assembly 1 stops operating.
[0034] The working principle and usage process of this utility model: When it is necessary to adjust the backrest tilt angle of the seat to increase, the slide rail assembly 1 runs, and the slider in the slide rail assembly 1 drives the seat cushion frame 2 to slide forward in the slide rail. At this time, the lower end of the backrest frame 3 is driven to move forward synchronously, while the upper end of the backrest frame 3 is pulled by the connecting plate 5 and cannot move forward. At this time, the upper end of the backrest frame 3 moves downward through the connecting rod 4, and the backrest tilt angle of the seat increases. When the tilt angle is reached, the slide rail assembly 1 stops running.
[0035] When the seat back tilt angle needs to be reduced, the slide rail assembly 1 operates. The slider in the slide rail assembly 1 drives the seat cushion frame 2 to slide backward in the slide rail. At this time, the lower end of the backrest frame 3 is driven to move backward synchronously. Meanwhile, the upper end of the backrest frame 3 is unable to move forward due to the pull of the connecting plate 5. At this time, the upper end of the backrest frame 3 moves upward through the connecting rod 4, and the seat back tilt angle decreases. When the required angle is reached, the slide rail assembly 1 stops operating.
[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A car seat frame with rear seat backrest linkage, characterized in that: It includes a slide rail assembly (1), a seat cushion frame (2), a backrest frame (3), a connecting rod (4), and a connecting plate (5); The slide rail assembly (1) is located at the lower end of the seat cushion frame (2). The slide rail assembly (1) is used to drive the seat cushion frame (2) to slide back and forth. The upper end of the seat cushion frame (2) is connected to the backrest frame (3). The upper end of the backrest frame (3) is connected to the connecting plate (5) through the connecting rod (4). The connecting plate (5) is installed and fixed on the vehicle frame.
2. The rear seat frame with linkage as described in claim 1, characterized in that: The slide rail assembly (1) includes a slide rail and a slider, the slider being slidably connected to the slide rail, and the seat cushion frame (2) being fixedly connected to the slider.
3. The car seat frame with rear seat backrest linkage according to claim 2, characterized in that: The seat cushion frame (2) is rotatably connected to the backrest frame (3).
4. The rear seat frame with linkage as described in claim 3, characterized in that: One end of the connecting rod (4) is rotatably connected to the backrest frame (3), and the other end is rotatably connected to the connecting plate (5).
5. A car seat frame with rear seat backrest linkage according to claim 4, characterized in that: When the seat needs to be adjusted, the slider in the slide rail assembly (1) drives the seat cushion frame (2) to slide forward in the slide rail. At this time, the lower end of the backrest frame (3) is driven to move forward synchronously, while the upper end of the backrest frame (3) is pulled by the connecting plate (5) and cannot move forward. The upper end of the backrest frame (3) moves downward through the connecting rod (4), and the tilt angle of the seat back increases.