A zero-gravity seat with a backrest that can be folded flat

Abstract

This utility model belongs to the field of vehicle seat technology, specifically relating to a zero-gravity seat with a foldable backrest. It includes a base, a seat frame, and a backrest. The backrest's rotation angle is adjusted via a backrest angle adjuster. A front support and a rear support are respectively provided on the left and right sides of the base. The lower mounting plate of the front angle adjuster is fixed to the left and right front supports. A slider hinged to the upper end of the upper mounting plate of the front angle adjuster is slidably mounted on longitudinal slide rails provided on the left and right side plates of the seat frame. The front angle adjuster controls the rotation of the upper mounting plate, causing the front of the seat frame to rise and fall. The upper ends of the left and right suspension rods are respectively hinged to the upper ends of the left and right rear supports via pins, and the lower ends are hinged to the rear ends of the left and right side plates of the seat frame. Power drives the rotation of the suspension rods around the pins, thereby causing the rear of the seat frame to rise and fall. After the front and rear sides of the seat frame are lowered to their lowest points, the backrest can be folded forward and flattened. The advantages are: simple structure, convenient adjustment, zero-gravity seating, and suitability for structural improvements to vehicle seats.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle seat technology, and in particular relates to a zero-gravity seat with a backrest that can be folded flat. Background Technology

[0002] To improve the comfort of car seats, multiple connections between different parts of the seat frame are designed to be adjustable to facilitate adjustment of the seat posture, thereby providing sufficient and appropriate support for various parts of the body. Based on this, a zero-gravity seat cushion frame is proposed, and the backrest can be folded horizontally for a better customer riding experience and in specific scenarios such as avoidance. Summary of the Invention

[0003] The purpose of this invention is to provide a vehicle seat that combines zero gravity with a flat backrest, thereby more effectively improving riding comfort and increasing the utilization of interior space in a car.

[0004] The purpose of this utility model is to solve the following problem:

[0005] A zero-gravity seat with a foldable backrest includes a base, a seat frame on the base, and a backrest hinged to the base. The backrest's rotation angle is adjusted by a backrest angle adjuster. A front support and a rear support are respectively provided on the left and right sides of the base. The lower mounting plate of the front angle adjuster is fixed to the left and right front supports. A slider hinged to the upper end of the upper mounting plate of the front angle adjuster is slidably mounted on longitudinal slide rails provided on the left and right side plates of the seat frame. The front angle adjuster controls the rotation of the upper mounting plate, causing the front of the seat frame to rise and fall. The upper ends of the left and right suspension rods are respectively hinged to the upper ends of the left and right rear supports via pins, and the lower ends are hinged to the rear ends of the left and right side plates of the seat frame. Power drives the rotation of the suspension rods around the pins, thereby causing the rear of the seat frame to rise and fall. After the front and rear sides of the seat frame are lowered to their lowest points, the backrest can fold forward and flatten. After the front and rear sides of the seat frame are raised to their highest points, the backrest folds back and achieves a zero-gravity state with the seat frame.

[0006] As a further optimization of the above technical solution, a synchronizing rod is connected to the left and right front adjusting devices. The front adjusting motor drives the rotation of the synchronizing rod through a gear mechanism to realize the synchronous adjustment of the left and right front adjusting devices, thereby driving the lifting and lowering of the front part of the sitz bath frame.

[0007] As a further optimization of the above technical solution, the specific structure of the suspension rod rotating around the pin shaft by power driving is as follows: one end of the lead screw motor is hinged to the base, and the screw sleeve screwed to the lead screw of the lead screw motor is hinged to the middle of the suspension rod. The rotation of the lead screw motor drives the suspension rod to rotate around the pin shaft, thereby driving the lifting and lowering of the rear of the seat frame.

[0008] As a further optimization of the above technical solution, a horizontal tube is fixed on the rear bracket on the left and right sides of the base. One end of the screw motor is hinged to the horizontal tube. A synchronization tube is connected to the middle of the left and right suspension rods. The screw sleeve is hinged to the synchronization tube. The rotation of the screw motor drives the rotation of the suspension rods on both sides around the pin shaft, thereby driving the lifting and lowering of the rear part of the seat frame.

[0009] As a further optimization of the above technical solution, the sitz bath frame includes left and right side plates on both sides and a U-shaped plate connecting the front ends of the left and right side plates.

[0010] As a further optimization of the above technical solution, the slide rail is provided with a T-slot, the outer end of the slider is provided with a sliding part that can slide in the T-slot, and the inner end is provided with a hinge shaft that is hinged to the hinge hole at the upper end of the upper mounting plate.

[0011] As a further optimization of the above technical solution, the front end of the slide rail is provided with a cover that blocks the T-slot.

[0012] As a further optimization of the above technical solution, a bushing or bearing is fitted onto the sliding part.

[0013] As a further optimization of the above technical solution, a longitudinal seat slide rail is provided on the lower side of the base, and slide tracks that slide on the seat slide rail are provided on the lower surfaces of the base plates on the left and right sides of the base.

[0014] As a further optimization of the above technical solution, a horizontal mounting plate is connected to the base plate on the left and right sides of the base. The motor of the motor mounted on the mounting plate extends to both sides along the motor axis and drives the base plate to move back and forth relative to the seat slide rail through a gear transmission mechanism or a worm gear mechanism at its end.

[0015] The advantages of this invention compared to the prior art are:

[0016] 1. After the seat frame of this utility model is pulled forward and its height is lowered, the backrest can be folded forward and flattened, reducing the space occupied by the seat. The top of the backrest after being flattened can stably prevent other items from entering.

[0017] 2. This utility model can achieve a zero-gravity state by adjusting the height of the front and rear sides of the seat frame, so that the occupant can sit comfortably in the seat without any discomfort.

[0018] 3. This utility model raises the front and rear sides of the sitz bath frame to be flush with the upper surface of the backrest, which can be used as a resting bed for passengers without the need for additional padding, and is comfortable to lie on.

[0019] 4. This utility model has a simple structure and is easy to adjust, making it suitable for structural improvements of vehicle seats. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0021] Figure 2 This is a schematic diagram of the present invention in a normal sitting posture.

[0022] Figure 3 This is a three-dimensional schematic diagram of the sitz bath frame of this utility model, which is pulled forward and lowered in height, and the backrest is folded forward and flattened.

[0023] Figure 4 This is a schematic diagram of the front part of the sitz bath frame of this utility model being raised and the backrest being rotated backward to be in a zero-gravity state. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figures 1-4 :

[0025] A zero-gravity seat with a foldable backrest includes a base 29, a seat frame 36 on the base 29, and a backrest 20 hinged to a mounting plate 23 on the outer side of the rear support 14 of the base 29. The backrest 20's rotation angle is adjusted by backrest angle adjusters 22 on both sides driven by a backrest angle adjustment motor 18 and a synchronizing rod 19. A front support 27 and a rear support 14 are respectively provided on the left and right sides of the base 29. The lower mounting plate of the front angle adjuster 35 is fixed to the left and right front supports 27. A slider hinged to the upper end of the upper mounting plate 11 of the front angle adjuster 35 is slidably mounted on longitudinal slide rails 1 on the left and right side plates of the seat frame 36. 2. The front angle adjuster 35 controls the rotation of the upper mounting plate 11, which drives the lifting and lowering of the front part of the basin frame 36. The upper ends of the left and right suspension rods 16 are respectively hinged to the upper ends of the left and right rear brackets 14 through pins 25, and the lower ends are respectively hinged to the rear ends of the left and right side plates 13 of the basin frame 36 through pins 17. The suspension rods 16 are driven to rotate around the pins 25, thereby driving the lifting and lowering of the rear part of the basin frame 36. After the front and rear sides of the basin frame 36 are lowered to the lowest point, the backrest 20 can be flipped forward flat. After the front and rear sides of the basin frame 36 are raised to the highest point, the backrest 20 can be flipped backward flat to achieve a zero-gravity state with the basin frame 36.

[0026] As a further optimization of the above technical solution, a synchronizing rod 33 is connected to the left and right front angle adjusters 35. The front angle adjuster motor 31 drives the rotation of the synchronizing rod 33 through a gear mechanism to realize the synchronous adjustment of the left and right front angle adjusters 35 so as to drive the lifting and lowering of the front part of the sitz bath frame 36.

[0027] As a further optimization of the above technical solution, the specific structure of the suspension rod 16 rotating around the pin shaft 25 by power drive is as follows: one end of the lead screw motor 21 is hinged to the base 29, and the screw sleeve 24 screwed on the lead screw 26 of the lead screw motor 21 is hinged to the middle of the suspension rod 16. The rotation of the lead screw motor 21 drives the rotation of the suspension rod 16 around the pin shaft 25, thereby driving the lifting and lowering of the rear of the basin frame 36.

[0028] As a further optimization of the above technical solution, a horizontal tube 37 is fixed on the rear bracket 14 on the left and right sides of the base 29. One end of the screw motor 21 is hinged to the horizontal tube 37. The middle part of the left and right suspension rods 16 is connected to the synchronous tube 15. The screw sleeve 24 is hinged to the synchronous tube 15. The rotation of the screw motor 21 drives the rotation of the suspension rods 16 on both sides around the pin shaft 25, thereby driving the lifting and lowering of the rear part of the basin frame 36.

[0029] As a further optimization of the above technical solution, the sitz bath frame 36 includes left and right side plates 13 on both sides and a U-shaped plate 34 connected to the front end of the left and right side plates 13.

[0030] As a further optimization of the above technical solution, the slide rail 12 is provided with a T-shaped groove, the outer end of the slider is provided with a sliding part 38 that can slide in the T-shaped groove, and the inner end is provided with a hinge shaft 10 that is hinged to the hinge hole at the upper end of the upper mounting plate 11.

[0031] As a further optimization of the above technical solution, the front end of the slide rail 12 is provided with a cover to block the T-slot.

[0032] As a further optimization of the above technical solution, a bushing or bearing is fitted on the sliding part to reduce sliding friction, so that the bushing or bearing slides flexibly and smoothly in the T-slot, reducing wear.

[0033] As a further optimization of the above technical solution, a longitudinal seat slide rail 30 is provided on the lower side of the base 29, and slide tracks that slide on the seat slide rail 30 are provided on the lower surfaces of the base plates 29 on the left and right sides of the base 29.

[0034] As a further optimization of the above technical solution, horizontal mounting plates 32 are connected to the base plates 29 on the left and right sides of the base 29. The motor 28 mounted on the mounting plate 32 extends out to both sides of the motor axis and drives the base plate 29 to move back and forth relative to the seat slide rail 30 through a gear transmission mechanism or a worm gear mechanism at its end.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that simple substitutions or modifications can still be made to the technical solutions or technical features described in the foregoing embodiments, and these simple substitutions or modifications do not cause the essence of the corresponding technical solutions to deviate from the spirit and substance of the technical solutions of the embodiments of this utility model, and are still within the protection scope of this utility model.

Claims

1. A zero-gravity chair with a backrest that can be folded flat, comprising a base, a sitting-bowl framework on the base, and a backrest hinged to the base, the backrest's angle of rotation being adjusted by a backrest angle adjuster, characterized in that: The base is provided with a front bracket and a rear bracket on its left and right sides, respectively. The lower mounting plate of the front angle adjuster is fixed on the left and right front brackets. The slider hinged to the upper end of the upper mounting plate of the front angle adjuster is slidably mounted on the longitudinal slide rails on the left and right side plates of the basin frame. The front angle adjuster controls the rotation of the upper mounting plate to drive the lifting and lowering of the front part of the basin frame. The upper ends of the left and right suspension rods are respectively hinged to the upper ends of the left and right rear brackets and the lower ends are hinged to the rear ends of the left and right side plates of the basin frame through pins. The suspension rods are driven to rotate around the pins by power, thereby driving the lifting and lowering of the rear part of the basin frame. After the front and rear sides of the basin frame are lowered to the lowest point, the backrest can be folded forward flat. After the front and rear sides of the basin frame are raised to the highest point, the backrest can be folded back flat to achieve a zero-gravity state with the basin frame.

2. A zero-gravity chair with a foldable backrest according to claim 1, characterized in that: Synchronizing rods are connected to the left and right front adjusting devices. The front adjusting motor drives the rotation of the synchronizing rods through a gear mechanism to achieve synchronous adjustment of the left and right front adjusting devices, thereby driving the lifting and lowering of the front part of the sitz bath frame.

3. A zero-gravity chair with a foldable backrest according to claim 1, characterized in that: The specific structure of the suspension rod rotating around the pin shaft by power drive is as follows: one end of the lead screw motor is hinged to the base, and the screw sleeve screwed to the lead screw motor is hinged to the suspension rod. The rotation of the lead screw motor drives the suspension rod to rotate around the pin shaft, thereby driving the lifting and lowering of the rear part of the sitz bath frame.

4. A zero-gravity chair with a foldable backrest according to claim 3, characterized in that: A horizontal tube is fixed on the rear bracket on the left and right sides of the base. One end of the lead screw motor is hinged to the horizontal tube. A synchronization tube is connected to the middle of the left and right suspension rods. The screw sleeve is hinged to the middle of the synchronization tube. The rotation of the lead screw motor drives the suspension rods on both sides to rotate around the pin shaft, thereby driving the lifting and lowering of the rear of the sitz bath frame.

5. The reclining, zero-gravity chair of claim 1, wherein: The sitz bath frame includes left and right side plates on both sides and a U-shaped plate connecting the front ends of the left and right side plates.

6. A zero-gravity chair with a foldable backrest according to claim 1, characterized in that: The slide rail is provided with a T-slot, the outer end of the slider is provided with a sliding part that can slide in the T-slot, and the inner end is provided with a hinge shaft that is hinged to the hinge hole at the upper end of the upper mounting plate.

7. A zero-gravity chair with a foldable backrest according to claim 6, characterized in that: The front end of the slide rail is provided with a cover that blocks the T-slot.

8. A zero-gravity chair with a foldable backrest according to claim 6, characterized in that: The sliding part is fitted with a bushing or bearing.

9. The reclining, zero-gravity chair of claim 1, wherein: The base is provided with a longitudinal seat slide rail on its lower side, and the lower surfaces of the base plates on the left and right sides of the base are provided with slide tracks that slide on the seat slide rail.

10. A zero-gravity seat with a tiltable backrest according to claim 9, characterized in that: The base has horizontal mounting plates connected to the bottom plates on both sides. The motors mounted on the mounting plates extend out to both sides along the motor axis and drive the bottom plates to move back and forth relative to the seat slide rail through a gear transmission mechanism or worm gear mechanism at their ends.

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