Flattening and bed forming mechanism of vehicle seat
By designing an adjustable vehicle seat mechanism, the problem of the rear seat backrests not being able to recline in 5-seater SUVs has been solved, creating a comfortable resting bed structure and improving the passenger experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-29
- Publication Date
- 2026-04-07
AI Technical Summary
The rear seat backrests of existing 5-seater SUVs cannot be folded down, causing passengers to come into contact with hard materials when resting, which is not comfortable and requires the addition of an air mattress or soft pad.
Design an adjustable vehicle seat mechanism, including a backrest frame that can be laid flat forward and backward, a leg rest drive device that can be unfolded, and a seat frame lifting device. The backrest frame can be laid flat, the leg rest can be unfolded, and the seat frame can be raised and lowered forward and backward by button control, forming a comfortable resting bed.
It achieves a flush seat back and seat cushion, with the leg rest extended to form a completely flat bed, providing a comfortable resting environment for passengers. No additional padding is required, and the operation is simple, enhancing the riding experience.
Smart Images
Figure CN224090073U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of seat technology, and in particular relates to a mechanism for flattening vehicle seats into a bed. Background Technology
[0002] Currently, in 5-seater SUVs, the rear seats fold down to form a large bed, creating a 10° angle with the luggage compartment when folded down.
[0003] The backrest cannot be reclined backwards; when reclined forwards to form a bed, the person is in direct contact with the hard material of the seat back and luggage compartment, which is not comfortable. An air mattress or soft padding is needed to ensure a comfortable rest. Summary of the Invention
[0004] The purpose of this utility model is to provide a mechanism that can raise the seat frame of a vehicle seat, flatten the backrest frame, and unfold and flatten the leg rest to form a bed for passengers to rest.
[0005] The purpose of this utility model is to solve the following problem:
[0006] The vehicle seat's flattening mechanism includes a base, a seat frame, a backrest frame, and leg rests. The backrest frame can be adjusted to lie flat in the front or back via an angle adjuster. The leg rest drive device can drive the leg rests to be adjusted to a folded vertical state or an unfolded horizontal state. The rear of the seat frame can be raised and lowered by a rear lifting device, and the front of the seat frame can be raised and lowered by a front lifting device.
[0007] As a further optimization of the above technical solution, the angle adjuster, the leg support drive device, and the front and rear lifting device of the sump frame are controlled by a single button to operate simultaneously, so that the backrest frame is laid flat, the leg support is extended to a horizontal state, and the front and rear parts of the sump frame are raised to be flush with the backrest frame and / or the leg support, forming a bed for passengers to rest on.
[0008] As a further optimization of the above technical solution, the sitz bath frame includes left and right side plates, a front horizontal tube and a rear horizontal tube fixed to the front and rear sides of the left and right side plates, two or more support horizontal bars fixed between the left and right side plates, and two or more support vertical bars fixed between the front and rear horizontal tubes.
[0009] As a further optimization of the above technical solution, the rear lifting device includes a first motor hinged to the base, a lead screw driven by the first motor, and a threaded sleeve screwed onto the lead screw. The middle parts of the first connecting rods respectively hinged to the left and right side plates of the base are connected through a rear synchronizing tube. The threaded sleeve is hinged to the rear synchronizing tube. The other end of the first connecting rod is hinged to one end of the second connecting rod. The other end of the second connecting rod is respectively hinged to the rear of the left and right side plates. The rotation of the first motor drives the lifting and lowering of the rear of the seat frame through the first connecting rod and the second connecting rod. When the first motor stops, the lead screw and the threaded sleeve can self-lock.
[0010] As a further optimization of the above technical solution, both the first link and the second link are in a "V" shape during the lifting and lowering of the sitz bath frame, with the opening of the "V" shape facing forward.
[0011] As a further optimization of the above technical solution, the front lifting device includes a second motor hinged to the base. The second motor drives the rotation of synchronous rods hinged to the two side plates of the base through a transmission device. The two ends of the synchronous rods are respectively fixed to one end of the rocker arm. The front sides of the left and right side plates each have a front extension plate extending forward and downward. The other end of the rocker arm is hinged to the lower end of the front extension plate. The rotation of the second motor drives the lifting and lowering of the front part of the seat frame through the rocker arm. When the second motor stops, the transmission device and the synchronous rod can be self-locked.
[0012] As a further optimization of the above technical solution, the rocker arm and the front extension plate are both in a "V" shape during the lifting and lowering of the sitz bath frame, with the opening of the "V" shape facing backward.
[0013] As a further optimization of the above technical solution, after the front and rear parts of the sitz bath frame are lowered to their lowest points, the upper surface of the sitz bath frame has a placement space for the backrest frame to be placed flat in front.
[0014] As a further optimization of the above technical solution, a rear extension plate is provided at the rear end of the left and right side plates of the base, and the rear extension plate is fixedly connected to the lower mounting plate of the angle adjuster. The upper mounting plate of the angle adjuster is fixedly connected to the backrest frame, and a seat mounting lug extends rearward from the rear side of the lower mounting plate.
[0015] As a further optimization of the above technical solution, a third motor is hinged to the front cross tube. The third motor drives the rotation of the front synchronous tube through a lead screw and a threaded sleeve, thereby driving the extension and retraction of the connecting rod assembly to move the leg support plate in and out.
[0016] The advantages of this invention compared to the prior art are:
[0017] 1. The seat back of this utility model is folded flat backward, the seat frame is raised forward and backward so that the seat cushion is flush with the seat back, the leg rest is raised, and the headrest is folded to form a completely flat bed. The areas of the seat back, seat cushion and leg rest that come into contact with the human body are all soft areas of the seat A surface. There is no need to add an air mattress or soft cushion to meet the comfort rest needs of the occupants.
[0018] 2. This utility model can centrally control the simultaneous operation of the angle adjuster, leg support drive device, and front and rear lifting device of the sitz bath frame with a single button, realizing one-button bed conversion and providing passengers with a good sleeping experience.
[0019] 3. The seat frame of this utility model is lowered to its lowest position at the front and back, so that the seat back can be laid forward at a 0° angle with the suitcase, making it easy to place other items stably.
[0020] 4. This utility model has a simple structure, is easy to operate, and is comfortable to use, making it easy to promote its use in vehicle seats. Attached Figure Description
[0021] Figure 1 This is a three-dimensional schematic diagram of the present invention after the surface components have been removed.
[0022] Figure 2 This is a schematic diagram of the present invention, showing how the seat frame is raised, the backrest frame is laid flat, and the leg rest is unfolded and laid flat to form a bed for passengers to rest on.
[0023] Figure 3 This is a schematic diagram of the sitz bath frame after it has been lowered, the leg rest retracted, and the backrest frame erected.
[0024] Figure 4 This is a schematic diagram of the sitz bath frame of this utility model after it is lowered, the leg rest is folded up, and the backrest frame is laid flat in front. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figures 1-4 :
[0026] The vehicle seat folding mechanism includes a base 10, a seat frame 20, a backrest frame 40, and a leg rest 50. The backrest frame 40 can be adjusted to lie flat in the front or back via an angle adjuster 43. The leg rest drive device can drive the leg rest plate 56 to be adjusted to a folded vertical state or an unfolded horizontal state. The rear of the seat frame 20 can be raised and lowered by a rear lifting device, and the front of the seat frame 20 can be raised and lowered by a front lifting device.
[0027] As a further optimization of the above technical solution, the angle adjuster 43, the leg support drive device, and the front and rear lifting device of the seat frame 20 are controlled by a button to operate simultaneously, so that the backrest frame 40 is laid flat, the leg support 50 is extended to a horizontal state, and the front and rear parts of the seat frame 20 are raised to be flush with the backrest frame 40 and / or the leg support 50, forming a bed for passengers to rest. The button is located on the seat armrest or backrest.
[0028] As a further optimization of the above technical solution, the sitz bath frame 20 includes left and right side plates 21, a front horizontal tube 26 and a rear horizontal tube 24 fixed on the front and rear sides of the left and right side plates 21, two or more support horizontal bars 28 fixed between the left and right side plates 21, and two or more support vertical bars 27 fixed between the front and rear horizontal tubes.
[0029] As a further optimization of the above technical solution, the rear lifting device includes a first motor 38 hinged to the base 10, a lead screw 31 driven by the first motor 38, and a threaded sleeve 32 screwed onto the lead screw 31. The middle parts of the first connecting rods 33, which are respectively hinged to the left and right side plates 21 of the base 10, are connected through a rear synchronization tube 23. The threaded sleeve 32 is hinged to the rear synchronization tube 23. The other end of the first connecting rod 33 is hinged to one end of the second connecting rod 34. The other end of the second connecting rod 34 is respectively hinged to the rear of the left and right side plates. The rotation of the first motor 38 drives the lifting and lowering of the rear of the sitz bath frame 20 through the first connecting rod 33 and the second connecting rod 34. When the first motor 38 stops rotating, the lead screw 31 and the threaded sleeve 32 can self-lock.
[0030] As a further optimization of the above technical solution, the first connecting rod 33 and the second connecting rod 34 are both in a "V" shape during the lifting and lowering of the basin frame 20, with the opening of the "V" facing forward.
[0031] As a further optimization of the above technical solution, the front lifting device includes a second motor 36 hinged to the base 10. The second motor 36 drives the rotation of the synchronous rods 37 hinged to the two side plates of the base 10 through a transmission device (e.g., a gear transmission device). The two ends of the synchronous rods 37 are respectively fixed to one end of the rocker arm 30. The front sides of the left and right side plates 21 each have a front extension plate 22 extending forward and downward. The other end of the rocker arm 30 is hinged to the lower end of the front extension plate 22. The rotation of the second motor 36 drives the lifting and lowering of the front part of the sitz bath frame 20 through the rocker arm 30. When the second motor 36 stops rotating, the transmission device and the synchronous rod 37 can be self-locked.
[0032] As a further optimization of the above technical solution, the rocker arm 30 and the front extension plate 22 are both in a "V" shape during the lifting and lowering of the seat frame 20, with the opening of the "V" shape facing backward.
[0033] As a further optimization of the above technical solution, after the front and rear parts of the potty frame 20 are lowered to the lowest point, the upper surface of the potty frame 20 has a placement space for the backrest frame 40 to be placed flat in front.
[0034] As a further optimization of the above technical solution, a rear extension plate 11 is provided on the rear end of the left and right side plates 21 of the base 10. The rear extension plate 11 is fixedly connected to the lower mounting plate 42 of the angle adjuster 43. The upper mounting plate 41 of the angle adjuster 43 is fixedly connected to the backrest frame 40. A seat mounting lug 44 extends rearward from the rear side of the lower mounting plate 21.
[0035] As a further optimization of the above technical solution, a third motor 52 is hinged to the front horizontal tube 26. The third motor 52 drives the rotation of the front synchronous tube 55 through the lead screw 53 and the screw sleeve 54, thereby driving the extension and retraction of the connecting rod assembly 51 to drive the retraction and extension of the leg support plate 56.
[0036] 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 mechanism for folding a vehicle seat into a bed, comprising a base, a seat frame, a backrest frame, and a leg rest, characterized in that: The backrest frame can be adjusted to lie flat in the front or back via an angle adjuster. The leg support drive device can drive the leg support plate to be adjusted to a folded vertical state or an unfolded horizontal state. The rear lifting device at the rear of the seat frame can drive the rear of the seat frame to rise and fall, and the front lifting device at the front of the seat frame can drive the front of the seat frame to rise and fall.
2. The vehicle seat folding mechanism according to claim 1, characterized in that: The angle adjuster, leg rest drive device, and seat frame front and rear lifting device are controlled by a button to operate simultaneously, so that the backrest frame is laid flat, the leg rest is extended to a horizontal position, and the front and rear parts of the seat frame are raised to be flush with the backrest frame and / or the leg rest, forming a bed for passengers to rest on.
3. The vehicle seat folding mechanism according to claim 1, characterized in that: The sitz bath frame includes left and right side plates, a front horizontal tube and a rear horizontal tube fixed to the front and rear sides of the left and right side plates, two or more support horizontal bars fixed between the left and right side plates, and two or more support vertical bars fixed between the front and rear horizontal tubes.
4. The vehicle seat folding mechanism according to claim 3, characterized in that: The rear lifting device includes a first motor hinged to the base, a lead screw driven by the first motor, and a threaded sleeve screwed onto the lead screw. The middle parts of the first connecting rods, which are respectively hinged to the left and right side plates of the base, are connected through a rear synchronizing tube. The threaded sleeve is hinged to the rear synchronizing tube. The other end of the first connecting rod is hinged to one end of the second connecting rod. The other end of the second connecting rod is respectively hinged to the rear of the left and right side plates. The rotation of the first motor drives the lifting and lowering of the rear of the sitz bath frame through the first and second connecting rods. When the first motor stops, the lead screw and the threaded sleeve can self-lock.
5. The vehicle seat folding mechanism according to claim 4, characterized in that: Both the first and second connecting rods are in a "V" shape during the lifting and lowering of the sac frame, with the opening of the "V" shape facing forward.
6. The vehicle seat folding mechanism according to claim 3, characterized in that: The front lifting device includes a second motor hinged to the base. The second motor drives the rotation of synchronous rods hinged to the two side plates of the base through a transmission device. The two ends of the synchronous rods are respectively fixed to one end of the rocker arm. The front sides of the left and right side plates each have a front extension plate extending forward and downward. The other end of the rocker arm is hinged to the lower end of the front extension plate. The rotation of the second motor drives the lifting and lowering of the front part of the seat frame through the rocker arm. When the second motor stops, the transmission device and the synchronous rod can be self-locked.
7. The vehicle seat folding mechanism according to claim 6, characterized in that: The rocker arm and the front extension plate are both in a "V" shape during the lifting and lowering of the sac frame, with the opening of the "V" facing backward.
8. The vehicle seat folding mechanism according to claim 1, characterized in that: After the front and rear parts of the sitz bath frame are lowered to their lowest points, the upper surface of the sitz bath frame has a space for the backrest frame to be placed flat in front of it.
9. The vehicle seat folding mechanism according to claim 1, characterized in that: The rear end of the left and right side plates of the base extends upward and backward to form a rear extension plate, which is fixedly connected to the lower mounting plate of the angle adjuster. The upper mounting plate of the angle adjuster is fixedly connected to the backrest frame, and the rear side of the lower mounting plate extends backward to form a seat mounting lug.
10. The vehicle seat folding mechanism according to claim 3, characterized in that: A third motor is hinged to the front cross tube. The third motor drives the rotation of the front synchronous tube through a lead screw and a threaded sleeve, thereby driving the extension and retraction of the connecting rod assembly to move the leg support plate in and out.