Zero-gravity automobile seat with backrest flattening and cushion diving functions

Abstract

The utility model discloses a zero-gravity automobile seat with backrest flattening and cushion diving functions, which comprises a backrest, a cushion, a front connecting rod, a zero-gravity connecting rod, a front fixing support and a rear fixing rotating shaft, the backrest is provided with an angle adjuster, the cushion is provided with a screw nut driving mechanism, the front end of the cushion is hinged with the upper end of the front connecting rod, and the rear end of the zero-gravity connecting rod is hinged with the rear fixing rotating shaft. The front end of the zero-gravity connecting rod is hinged to the lower end of the front connecting rod, the upper portion of the rear end of the zero-gravity connecting rod is hinged to the front fixing support, the lower portion of the rear end of the zero-gravity connecting rod is hinged to the front end of the lead screw nut driving mechanism, the front fixing support is fixedly connected to the sliding rail upper support, and the rear end of the lead screw nut driving mechanism is hinged to the sliding rail upper support through a lead screw rear fixing rotating shaft. The whole seat cushion is in an L shape, the corner of the seat cushion is hinged to the sliding rail upper support through a rear fixing rotating shaft, the bottom of the backrest is hinged to the top of the rear end of the seat cushion through an angle adjuster, and the luggage case can meet the large space requirement for placing the luggage case in the state that the backrest is turned flat and can also meet the comfort requirement in the zero-gravity state.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to a zero-gravity automotive seat with backrest folding flat and seat cushion reclining functions. Background Technology

[0002] Car seats are an important component of automotive interiors, and as people's demands for comfort, functionality, and space in cars continue to increase, the demand for zero-gravity seats in the rear is growing. However, zero-gravity structures are complex and occupy a significant amount of space. Simultaneously, the need for trunk space is also increasing, often achieved by folding the backrest flat to be flush with the rear of the vehicle. To achieve this within the limited rear passenger space, a mechanism that links the backrest folding to the seat cushion lowering is typically used. These two functions, being structurally independent, conflict in terms of space requirements, resulting in significant limitations in structural layout. Existing patent CN202411176220.X discloses a zero-gravity seat frame with a backrest that can be folded forward. Although this structure achieves both zero-gravity and backrest folding and seat cushion sinking functions through the same set of linkages, the lower end of the backrest is hinged to the rear fixed bracket, and the rear end of the seat cushion is hinged to the lower part of the backrest. When it is in a zero-gravity posture, the rear fixed bracket will protrude from the front of the backrest, thus affecting the comfort of the passenger. In other words, this seat frame cannot guarantee the comfort of the zero-gravity state. Utility Model Content

[0003] In view of the problems existing in the prior art, the present invention aims to provide a zero-gravity car seat with backrest folding flat and seat cushion reclining functions, which can not only meet the large space requirement for luggage storage when the backrest is folded flat, but also meet the comfort requirements in the zero-gravity state.

[0004] To achieve the above objectives, this utility model proposes a zero-gravity car seat with backrest folding and seat cushion reclining functions, including a backrest, seat cushion, front link, zero-gravity link, front fixed bracket, and rear fixed pivot. The backrest is equipped with an angle adjuster and a backrest motor. The seat cushion is equipped with a screw and nut drive mechanism. The front end of the seat cushion is hinged to the upper end of the front link, and the front end of the zero-gravity link is hinged to the lower end of the front link. The upper part of the rear end of the zero-gravity link is hinged to the front fixed bracket, and the lower part of the rear end is hinged to the front end of the screw and nut drive mechanism. The front fixed bracket is fixedly connected to the upper bracket of the slide rail. The rear end of the screw and nut drive mechanism is hinged to the upper bracket of the slide rail through the screw and nut rear fixed pivot. The rear end of the seat cushion extends upward and is L-shaped. The seat cushion is hinged to the upper bracket of the slide rail at its corner through the rear fixed pivot. The bottom of the backrest is hinged to the top of the rear end of the seat cushion through the angle adjuster.

[0005] When the lead screw and nut drive mechanism moves backward, it drives the zero-gravity linkage to rotate counterclockwise, thereby causing the front linkage to descend and the entire seat cushion to sink. At the same time, the backrest motor drives the angle adjuster, causing the backrest to flip forward and flatten, thus realizing the functions of backrest flattening and seat cushion sinking. When the lead screw and nut drive mechanism moves forward, it drives the zero-gravity linkage to rotate clockwise around the hinge point with the front fixed bracket, thereby causing the front linkage and seat cushion to move upward to achieve a zero-gravity posture with the front of the seat cushion raised. At the same time, the backrest motor drives the angle adjuster, causing the backrest to rotate backward to achieve a reclining zero-gravity posture, thus realizing the zero-gravity function of the entire chair.

[0006] In the above scheme: the lead screw and nut drive mechanism includes a motor, a lead screw connected to the output end of the motor, and a nut screwed onto the lead screw. The nut is hinged to the slide rail bracket via the rear fixed shaft of the lead screw. The motor is hinged to the lower rear end of the zero-gravity connecting rod. The lead screw and nut drive mechanism has a self-locking function and moves smoothly and reliably.

[0007] In the above scheme: the front connecting rod, the front fixed bracket, and the upper bracket of the slide rail are all provided in pairs and symmetrically arranged on the left and right sides of the seat cushion. The zero-gravity connecting rod includes a crossbar, which is hinged between the lower ends of the two front connecting rods. A bracket rod is welded to each end of the crossbar near the end position. One of the bracket rods extends backward and downward, and the extended end is hinged to the motor of the lead screw nut drive mechanism. The middle and rear ends of the two bracket rods are both welded upward and fixed with auxiliary blocks. The upper ends of the two auxiliary blocks are hinged and fixed to the two front fixed brackets. The two front fixed brackets are fixed to the inner wall of the upper bracket of the two slide rails. This structure is ingeniously designed and has high stability.

[0008] In the above solution: a pair of angle adjusters are provided, which are respectively set on the left and right sides of the backrest and located between the backrest and the seat cushion. The inner side of the angle adjuster is welded to the backrest, and the outer side of the angle adjuster is welded to the seat cushion. The structure is simple and easy to assemble.

[0009] In the above solution: the bottom end of the backrest is provided with a linkage rod, which is inserted between two angle adjusters. The backrest motor drives the angle adjusters on both sides to rotate synchronously through the linkage rod. The structure is simple and the operation is convenient.

[0010] In the above solution: the backrest motor is fixedly connected to the backrest by bolts, which is simple in structure and easy to assemble.

[0011] The beneficial effects of this utility model are:

[0012] 1. The backrest folding, seat cushion reclining, and zero-gravity functions share a common linkage structure. The backrest motor drives the backrest to rotate forward from its initial position, while the screw and nut drive mechanism moves backward to recline the seat cushion (creating space for the backrest to fold flat), thus achieving a flat backrest. Conversely, the backrest motor drives the backrest to rotate backward from its initial position, while the screw and nut drive mechanism moves forward to lift the front of the seat cushion, achieving the zero-gravity function. 2. The rear end of the seat cushion extends upward, and the hinge point between the seat cushion and the bracket on the slide rail is located at its rear corner. The bottom of the backrest is hinged to the top of the rear end of the seat cushion. This ensures that when the seat is adjusted to a zero-gravity state, there is no protrusion affecting passenger comfort. In summary, this utility model features a simple structure, ingenious layout, and minimal space occupation. It satisfies both the need for ample space for luggage storage when the backrest is folded flat and the comfort requirements of people in a zero-gravity state. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0014] Figure 1 This is a schematic diagram of the present invention in its initial state.

[0015] Figure 2 yes Figure 1 Side view.

[0016] Figure 3 This is a schematic diagram of a zero-gravity linkage.

[0017] Figure 4 This is a schematic diagram of the present invention in the state of the backrest being flattened and the seat cushion being lowered.

[0018] Figure 5 This is a schematic diagram of the present invention in a zero-gravity state.

[0019] Figure 6 This is a schematic diagram of the principle of this utility model in its initial state.

[0020] Figure 7 This is a schematic diagram illustrating the principle of the present invention in the state where the backrest is flattened and the seat cushion is lowered. Detailed Implementation

[0021] like Figure 1 As shown in Figure 7, a zero-gravity car seat with backrest folding flat and seat cushion reclining functions mainly consists of a backrest 1, a seat cushion 2, a front linkage 3, a zero-gravity linkage 4, a front fixed bracket 5, and a rear fixed pivot 7.

[0022] The backrest 1 is equipped with an angle adjuster 8 and a backrest motor 10. The seat cushion 2 is equipped with a screw and nut drive mechanism 6. The front end of the seat cushion 2 is hinged to the upper end of the front link 3. The front end of the zero gravity link 4 is hinged to the lower end of the front link 3. The upper part of the rear end of the zero gravity link 4 is hinged to the front fixed bracket 5, and the lower part of the rear end is hinged to the front end of the screw and nut drive mechanism 6. The front fixed bracket 5 is fixed to the upper bracket 11 of the slide rail. The rear end of the screw and nut drive mechanism 6 is hinged to the upper bracket 11 of the slide rail through the screw rear fixed pivot 12.

[0023] The rear end of the seat cushion 2 extends upward and is L-shaped. At its corner, the seat cushion 2 is hinged to the bracket 11 on the slide rail via the rear fixed pivot 7. The bottom of the backrest 1 is hinged to the top of the rear end of the seat cushion 2 via the angle adjuster 8.

[0024] When the structure starts the backrest flattening and seat cushion sinking functions from the initial state, the lead screw nut drive mechanism 6 moves backward, driving the zero gravity linkage 4 to rotate counterclockwise, thereby driving the front linkage 3 to descend, and then driving the seat cushion 2 to sink as a whole. At the same time, the backrest motor 10 drives the angle adjuster 8, so that the backrest 1 flips forward, thereby realizing the backrest flattening and seat cushion sinking functions.

[0025] When the structure starts to operate in zero gravity from its initial state, the screw nut drive mechanism 6 moves forward, causing the zero gravity link 4 to rotate clockwise around the hinge point with the front fixed bracket 5. This causes the front link 3 and the seat cushion 2 to move upward, achieving a zero gravity posture with the front end of the seat cushion 2 raised. At the same time, the backrest motor 10 drives the angle adjuster 8, causing the backrest 1 to rotate backward to achieve a reclining zero gravity posture, thus realizing the zero gravity function of the entire chair.

[0026] Preferably, the lead screw and nut drive mechanism 6 includes a motor, a lead screw connected to the output end of the motor, and a nut screwed onto the lead screw. The nut is hinged to the slide rail bracket 11 via the lead screw and the rear fixed shaft 12. The motor is hinged to the lower rear end of the zero-gravity connecting rod 4 (motor in front, lead screw in back). The lead screw and nut drive mechanism 6 has a self-locking function and smooth and reliable movement.

[0027] Ideally, each of the front connecting rod 3, the front fixed bracket 5, and the upper bracket 11 of the slide rail is provided in pairs and symmetrically arranged on the left and right sides of the seat cushion 2. The zero-gravity connecting rod 4 includes a crossbar 401, which is hinged between the lower ends of the two front connecting rods 3. A bracket rod 402 is welded to each end of the crossbar 401 near its end. One of the bracket rods 402 extends backward and downward, and its extended end is hinged to the motor of the lead screw nut drive mechanism 6. Auxiliary blocks 403 are welded and fixed upward at the middle and rear ends of the two bracket rods 402. The upper ends of the two auxiliary blocks 403 are hinged and fixed to the two front fixed brackets 5. The two front fixed brackets 5 are fixed to the inner walls of the two upper brackets 11 of the slide rail. This structure is ingeniously designed and has high stability.

[0028] Ideally, there should be a pair of angle adjusters 8, which are respectively set on the left and right sides of the backrest 1 and located between the backrest 1 and the seat cushion 2. The inner side of the angle adjuster 8 is welded to the backrest 1, and the outer side of the angle adjuster 8 is welded to the seat cushion 2. The structure is simple and easy to assemble.

[0029] Ideally, the bottom of the backrest 1 is equipped with a linkage rod 9, which is inserted between the two angle adjusters 8. The backrest motor 10 drives the angle adjusters 8 on both sides to rotate synchronously through the linkage rod 9. The structure is simple and the operation is convenient.

[0030] Ideally, the backrest motor 10 is fixedly connected to the backrest 1 by bolts, which is simple in structure and easy to assemble.

Claims

1. A zero-gravity car seat with backrest folding and seat cushion reclining functions, comprising a backrest (1), a seat cushion (2), a front linkage (3), a zero-gravity linkage (4), a front fixed bracket (5), and a rear fixed pivot (7), wherein the backrest (1) is equipped with an angle adjuster (8) and a backrest motor (10), the seat cushion (2) is equipped with a lead screw and nut drive mechanism (6), and the front end of the seat cushion (2) is hinged to the upper end of the front linkage (3), characterized in that: The front end of the zero gravity link (4) is hinged to the lower end of the front link (3), the upper part of the rear end of the zero gravity link (4) is hinged to the front fixed bracket (5), and the lower part of the rear end is hinged to the front end of the screw nut drive mechanism (6). The front fixed bracket (5) is fixed to the upper bracket (11) of the slide rail. The rear end of the screw nut drive mechanism (6) is hinged to the upper bracket (11) of the slide rail through the screw rear fixed pivot (12). The rear end of the cushion (2) extends upward and is L-shaped. The cushion (2) is hinged to the upper bracket (11) of the slide rail through the rear fixed pivot (7) at its corner. The bottom of the backrest (1) is hinged to the top of the rear end of the cushion (2) through the angle adjuster (8). When the screw nut drive mechanism (6) moves backward, it can drive the zero gravity link (4) to rotate counterclockwise, thereby driving the front link (3) to descend, and then driving the seat cushion (2) to sink as a whole. At the same time, the backrest motor (10) can drive the angle adjuster (8) to make the backrest (1) flip forward, thereby realizing the backrest flipping and seat cushion sinking functions. When the screw nut drive mechanism (6) moves forward, it can drive the zero gravity link (4) to rotate clockwise around the hinge point with the front fixed bracket (5), thereby driving the front link (3) and the seat cushion (2) to move upward to realize the zero gravity posture of the front end of the seat cushion (2). At the same time, the backrest motor (10) can drive the angle adjuster (8) to make the backrest (1) rotate backward to realize the zero gravity posture of reclining, thereby realizing the zero gravity function of the whole chair.

2. The zero-gravity car seat with backrest folding and seat cushion reclining functions as described in claim 1, characterized in that: The lead screw and nut drive mechanism (6) includes a motor, a lead screw connected to the output end of the motor, and a nut screwed onto the lead screw. The nut is hinged to the slide rail bracket (11) via the rear fixed shaft (12) of the lead screw. The motor is hinged to the lower rear end of the zero-gravity connecting rod (4).

3. The zero-gravity car seat with backrest folding and seat cushion reclining functions as described in claim 2, characterized in that: The front connecting rod (3), the front fixed bracket (5) and the upper bracket (11) of the slide rail are each provided in pairs and symmetrically arranged on the left and right sides of the seat cushion (2). The zero gravity connecting rod (4) includes a crossbar (401). The crossbar (401) is hinged between the lower ends of the two front connecting rods (3). A bracket rod (402) is welded to each end of the crossbar (401) near the end position. One of the bracket rods (402) extends backward and downward, and the extended end is hinged to the motor of the screw nut drive mechanism (6). The middle and rear ends of the two bracket rods (402) are both welded upward and fixed with auxiliary blocks (403). The upper ends of the two auxiliary blocks (403) are hinged and fixed to the two front fixed brackets (5). The two front fixed brackets (5) are fixed to the inner wall of the two upper brackets (11) of the slide rail.

4. The zero-gravity car seat with backrest folding and seat cushion reclining functions as described in claim 1, characterized in that: The adjustable angle device (8) is provided in pairs, respectively set on the left and right sides of the backrest (1) and located between the backrest (1) and the seat cushion (2). The inner side of the adjustable angle device (8) is welded to the backrest (1), and the outer side of the adjustable angle device (8) is welded to the seat cushion (2).

5. The zero-gravity car seat with backrest folding and seat cushion reclining functions as described in claim 4, characterized in that: The backrest (1) is provided with a linkage rod (9) at the bottom. The linkage rod (9) is inserted between two angle adjusters (8). The backrest motor (10) drives the angle adjusters (8) on both sides to rotate synchronously through the linkage rod (9).

6. The zero-gravity car seat with backrest folding and seat cushion reclining functions as described in claim 1, characterized in that: The backrest motor (10) is fixedly connected to the backrest (1) by bolts.

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