Self-adaptive adjusting seat

Abstract

The invention relates to the technical field of seat adjustment, and provides a self-adaptive adjustment seat which comprises a bottom shaft, a sleeve is fixedly connected to the top side of the bottom shaft, a sliding shaft is arranged in the sleeve, a fixed seat is fixedly connected to the top side of the sliding shaft, a seat plate is slidably connected to the top side of the fixed seat, a sliding block is fixedly connected to the bottom side of the seat plate, and the sliding block is fixedly connected to the bottom side of the sliding block. A back plate is rotatably connected to the rear end of the fixing seat, a headrest is slidably connected to the middle end of the back plate, a backup plate is arranged on the outer wall of the back plate, armrests are rotatably connected to the outer wall of the backup plate, and the bottom sides of the armrests are connected with the outer wall of the fixing seat through limiting assemblies. Through the design of the sliding shaft, the hydraulic rod, the traction rope and the like, flexible linkage adjustment of the height, the angle, the leg support, the seat plate, the armrests and the headrest is achieved. A user can easily adjust the posture of the seat according to own requirements and different scenes, and each part does not need to be independently operated. And the adjusting process is coherent and efficient and fits body changes in all directions, and comfortable and convenient use experience is provided.

Description

Technical Field

[0001] The present invention relates to the technical field of seat adjustment, in particular to a self-adjusting seat. Background Art

[0002] In today's diverse lifestyles, whether in the office, at home, or even in transportation, chairs play a vital role. With improvements in living standards and increasingly stringent demands for comfort, chairs are no longer simply devices for sitting or leaning; they must fully meet the user's physical support needs in various activities. For example, during long office hours, people need chairs that adapt to their sedentary postures and relieve back and waist pressure. During leisure time, they also expect chairs to be flexible and comfortable, providing a comfortable and relaxing experience.

[0003] Most traditional chairs have the problems of simple structure and single function. Taking common office chairs as an example, the backrest angle can usually only be adjusted in a limited number of levels, and the adjustment process is relatively complicated. Users often need to bend over to fumble for the adjustment knob, which not only wastes time but also makes it difficult to accurately adjust to the angle that suits their current sitting preference. In addition, the seat is fixed in position and cannot be flexibly moved according to changes in leg posture. This can easily lead to poor blood circulation in the legs, which in turn causes discomfort. At the same time, the seat and backrest angles cannot be adjusted in coordination, making it difficult to provide consistent and comfortable leg support. When the user changes their sitting posture, the chair cannot automatically make corresponding optimization adjustments, which greatly reduces the overall comfort. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a self-adjusting seat, which solves the problems of the existing seats being difficult to adjust and the seats being unable to automatically make corresponding optimization adjustments when the backrest is adjusted.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an adaptively adjustable seat, comprising:

[0006] A bottom shaft, the top side of the bottom shaft is fixedly connected to a sleeve, a sliding shaft is provided inside the sleeve, the top side of the sliding shaft is fixedly connected to a fixed seat, the top side of the fixed seat is slidably connected to a seat plate, the bottom side of the seat plate is fixedly connected to a slider, the rear end of the fixed seat is rotatably connected to a back plate, the middle end of the back plate is slidably connected to a headrest, the outer wall of the back plate is provided with a back plate, the outer wall of the back plate is rotatably connected to an armrest, and the bottom side of the armrest is connected to the outer wall of the fixed seat through a limiting assembly for supporting the armrest;

[0007] A leg rest is rotatably connected to the front end of the fixed seat, and the rear side of the leg rest is connected to the bottom end of the back plate through a linkage assembly to control the swing of the leg rest. A traction rope is connected between the bottom side of the leg rest and the slider, and the middle end of the traction rope is connected to the headrest through an elastic assembly to control the sliding of the headrest. The outer wall of the slider is connected to the back plate through a guide assembly to limit the sliding of the traction rope, and the bottom end of the back plate and the bottom side of the fixed seat are connected through a hydraulic rod.

[0008] Preferably, the limiting assembly includes a limiting block fixedly connected to the bottom side of the armrest, the outer wall of the fixing seat is fixedly connected to the fixing block, the top side of the fixing block is rotatably connected to a support rod, and the bottom end of the support rod is arranged on the bottom side of the limiting block.

[0009] Preferably, the linkage assembly includes a connecting block fixedly connected to the bottom side of the leg support, the bottom end of the back plate is rotatably connected to a linkage shaft, and the front end of the linkage shaft and the connecting block are rotatably connected.

[0010] Preferably, the elastic component includes a circular limiting plate fixedly connected to the middle end of the traction rope, the circular limiting plate is arranged on the top side of the headrest, the middle end and one end of the traction rope are both provided with springs, and the upper spring is arranged between the circular limiting plate and the headrest.

[0011] Preferably, the guide assembly includes a guide wheel fixedly connected to the outer wall of the back plate, a sliding hole is opened at the bottom end of the back plate, the traction rope is arranged on the outer wall of the guide wheel, and the traction rope is arranged on the inner wall of the sliding hole.

[0012] Preferably, a sliding groove is provided at the middle end of the fixing seat, and the sliding block is slidably connected to the inner wall of the sliding groove.

[0013] Preferably, the driving end of the hydraulic rod is rotatably connected to the bottom side of the fixing seat, and the non-driving end of the hydraulic rod is rotatably connected to the bottom end of the back plate.

[0014] Preferably, the sleeve and the sliding shaft are connected by bolts, and a cushion is provided on the top side of the armrest.

[0015] A method for using an adaptively adjustable seat comprises the following steps:

[0016] Step 1: First, start the hydraulic lever, then rotate the back plate to adjust the angle between it and the fixed seat to a suitable angle, while driving the leg support to swing at the front end of the fixed seat. At this time, use the traction rope to pull the seat plate to slide and adjust the position of the seat plate, and then close the hydraulic lever;

[0017] Step 2: Rotate the armrest to disengage the limit block from the top of the support rod, adjust the limit block to a suitable position, and then rotate the support rod to engage and secure the top of the support rod with the limit block.

[0018] Step 3. Pull down the headrest and slide it in the middle of the back panel to ensure that the headrest moves to the appropriate position.

[0019] Preferably, in step one, the seat plate moves, and the leg rest swings to pull the traction rope to slide on the outer wall of the guide wheel, pulling the slider and the seat plate to slide on the top side of the fixed seat, so that the distance between the seat plate and the back plate is shortened.

[0020] Working principle: The core support structure of the seat is composed of a bottom shaft, a sleeve, a sliding shaft and a fixed seat. The bottom shaft serves as the bottom foundation of the entire seat and provides stable support for the upper structure. The sleeve is firmly fixed on its top side. The sleeve and the sliding shaft are connected by bolts, which not only ensures the relative stability of the two, but also facilitates installation and subsequent maintenance. The sliding shaft can slide flexibly in the sleeve to adapt to different height requirements. The seat plate is located above the fixed seat and is slidably connected to the slide rail on the top side of the fixed seat. The back plate is rotatably connected to the rear end of the fixed seat. The angle adjustment between the two is controlled by a hydraulic rod. The driving end of the hydraulic rod is rotatably connected to the bottom side of the fixed seat, and the non-driving end is rotatably connected to the bottom end of the back plate. When the hydraulic rod is started, its telescopic movement pushes the back plate to rotate around the connection point. The user can adjust the back plate to a comfortable angle according to his or her sitting preference. The leg rest is pivotally connected to the front end of the fixed seat. It is connected to the bottom of the back panel by a connecting block fixed to the bottom of the leg rest and a linkage shaft pivotally connected to the bottom of the back panel. The front end of the linkage shaft is pivotally connected to the connecting block. When the back panel rotates under the action of the hydraulic rod, the linkage shaft and the connecting block work together to drive the leg rest to swing accordingly, achieving synchronous adaptation of the leg support and the chair back angle. The headrest is slidably connected to the middle end of the back panel and is connected to the traction rope via a circular stop plate and a spring. The traction rope is also connected to the bottom of the leg rest and the slider. When the leg rest swings, the traction rope, assisted by the guide wheel, pulls the seat panel to slide and adjust its position. When the traction rope slides, it pulls the circular stop plate and simultaneously pulls the headrest via the spring, achieving full alignment with the user's body posture. The guide wheel ensures the precise and stable movement of the traction rope. By cooperating between the guide wheel fixed to the outer wall of the back panel and the sliding hole at the bottom of the back panel, the traction rope tightly adheres to the outer wall of the guide wheel and passes through the inner wall of the sliding hole. This allows the traction rope to slide smoothly along the predetermined trajectory during force transmission, avoiding entanglement or deviation. The armrest is connected by a stopper fixed to the bottom of the armrest, a fixed block fixed to the outer wall of the mounting base, and a support rod that is rotatably connected to the top of the fixed block. To adjust the position of the armrest, rotate the armrest to disengage the stopper from the top of the support rod. Once the armrest is adjusted to the desired position, rotate the support rod again to reengage the top of the stopper, providing stable support for the user's arm.

[0021] The present invention provides a self-adjustable seat with the following beneficial effects:

[0022] 1. The present invention can slide flexibly in the sleeve through the sliding shaft, and the user can adjust the seat height according to his or her own needs; the angle between the backboard and the fixed seat is adjusted by the hydraulic rod, which drives the leg rest to swing at the same time, and the traction rope pulls the seat plate to slide, so that the seat can adapt to different sitting postures; the armrests can be adjusted in position through the cooperation of the limit block and the support rod; the headrest can also be slid and adjusted on the backboard, fully fitting the changes in the user's body posture, and meeting the comfort needs of different users in different scenarios.

[0023] 2. The present invention can drive the leg rest to swing when the back panel rotates. The swing of the leg rest pulls the traction rope, which in turn pulls the seat panel to slide, and at the same time affects the position of the headrest. This makes the seat movement coherent during adjustment, providing users with a more comfortable and convenient experience. There is no need to adjust each component separately, which improves the efficiency of seat adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A perspective view of the present invention;

[0025] Figure 2 It is a schematic diagram of the fixing seat structure of the present invention;

[0026] Figure 3 Schematic diagram of the backplane structure of the present invention;

[0027] Figure 4 for Figure 3 A magnified view of point A in the figure;

[0028] Figure 5 for Figure 3 Enlarged view of point B in FIG.

[0029] Figure 6 It is a schematic diagram of the linkage shaft structure of the present invention.

[0030] Among them, 1. bottom shaft; 2. sleeve; 3. sliding shaft; 4. fixed seat; 5. leg support; 6. backrest; 7. headrest; 8. armrest; 9. limit block; 10. support rod; 11. fixed block; 12. seat plate; 13. traction rope; 14. hydraulic rod; 15. back plate; 16. slide; 17. circular limit plate; 18. guide wheel; 19. slider; 20. linkage shaft; 21. connecting block. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example:

[0033] Please see the attached Figure 1 -Attached Figure 3 , an embodiment of the present invention provides an adaptively adjustable seat, comprising:

[0034] The bottom shaft 1, the top side of the bottom shaft 1 is fixedly connected with a sleeve 2, the interior of the sleeve 2 is provided with a sliding shaft 3, the top side of the sliding shaft 3 is fixedly connected with a fixed seat 4, the top side of the fixed seat 4 is slidably connected with a seat plate 12, the bottom side of the seat plate 12 is fixedly connected with a slider 19, the middle end of the fixed seat 4 is provided with a slide groove 16, the slider 19 is slidably connected to the inner wall of the slide groove 16, the rear end of the fixed seat 4 is rotatably connected to the back plate 15, the middle end of the back plate 15 is slidably connected to the headrest 7, the outer wall of the back plate 15 is provided with a back plate 6, the outer wall of the back plate 6 is rotatably connected to the armrest 8, the limit block 9 fixedly connected to the bottom side of the armrest 8, the outer wall of the fixed seat 4 is fixedly connected with a fixed block 11, the top side of the fixed block 11 is rotatably connected to the support rod 10, the bottom end of the support rod 10 is provided on the bottom side of the limit block 9 for supporting the armrest 8;

[0035] Specifically, bottom shaft 1 is located at the very bottom of the seat, forming the foundation for the entire seat and providing stable support for all structures above it. A sleeve 2 is securely fixed to the top of bottom shaft 1. Sleeve 2 is connected to sliding shaft 3 using bolts. This connection offers the dual advantages of ensuring relative stability between sleeve 2 and sliding shaft 3 while also facilitating operation during installation and subsequent maintenance. Sliding shaft 3 can slide flexibly up and down within sleeve 2, allowing users to customize the seat height accordingly. Affixed to the top of sliding shaft 3 is a mounting base 4, which serves as a mounting platform for other functional components on the seat and provides a foundation for the installation and use of subsequent components. To adjust the position of armrest 8, the user simply rotates armrest 8 to disengage stopper 9 from the top of support rod 10, adjust armrest 8 to the desired position, and then rotate support rod 10 again to reengage stopper 9. This provides stable support for the user's arm, meeting the arm placement requirements for different usage scenarios.

[0036] Please see the attached Figure 4 -Attached Figure 6, leg support 5, the leg support 5 is rotatably connected to the front end of the fixed seat 4, and is fixedly connected to the connecting block 21 on the bottom side of the leg support 5. The bottom end of the back plate 15 is rotatably connected to the linkage shaft 20. The front end of the linkage shaft 20 and the connecting block 21 are rotatably connected to control the swing of the leg support 5. A traction rope 13 is connected between the bottom side of the leg support 5 and the slider 19, and a circular limiting plate 17 is fixedly connected to the middle end of the traction rope 13. The circular limiting plate 17 is arranged on the top side of the headrest 7. The middle end and one end of the traction rope 13 are both provided with springs, and the upper spring is arranged between the circular limiting plate 17 and the headrest 7. To control the sliding of the headrest 7, a guide wheel 18 is fixedly connected to the outer wall of the back plate 15. A sliding hole is opened at the bottom end of the back plate 15. The traction rope 13 is arranged on the outer wall of the guide wheel 18. The traction rope 13 is arranged on the inner wall of the sliding hole to limit the sliding of the traction rope 13. The bottom end of the back plate 15 and the bottom side of the fixed seat 4 are connected by a hydraulic rod 14. The driving end of the hydraulic rod 14 is rotatably connected to the bottom side of the fixed seat 4. The non-driving end of the hydraulic rod 14 is rotatably connected to the bottom end of the back plate 15. The sleeve 2 and the sliding shaft 3 are connected by bolts. The top side of the armrest 8 is provided with a cushion.

[0037] Specifically, the backboard 15 is rotatably connected to the rear end of the fixed seat 4, and the angle adjustment between the backboard 15 and the fixed seat 4 is controlled by the hydraulic rod 14. The driving end of the hydraulic rod 14 is rotatably connected to the bottom side of the fixed seat 4, and the non-driving end is rotatably connected to the bottom end of the backboard 15. When the hydraulic rod 14 is started, the hydraulic rod 14 will perform a telescopic movement, and this telescopic movement will push the backboard 15 to rotate around the connection point with the fixed seat 4. The user can adjust the backboard 15 to a suitable reclining angle to obtain optimal comfort. The two ends of the traction rope 13 are respectively connected to the bottom side of the leg rest 5 and the slider 19. When the leg rest 5 swings, the traction rope 13, with the assistance of the guide assembly, will pull the seat plate 12 to slide, thereby adjusting the position of the seat plate 12. At the same time, since the middle end of the traction rope 13 is elastically connected to the headrest 7, it will also affect the position of the headrest 7. This achieves an organic linkage between the movements of the headrest 7, seat plate 12, and leg rest 5, which can fully adapt to the changes in the user's body posture. The traction rope 13 is tightly attached to the outer wall of the guide wheel 18 and passes through the inner wall of the sliding hole. During the process of the traction rope 13 transmitting force, the guide assembly can ensure that the traction rope 13 slides smoothly along the predetermined trajectory, avoiding entanglement or deviation.

[0038] As another aspect of the present invention, the present invention provides a method for using an adaptively adjustable seat, comprising the following steps:

[0039] Step 1: First, start the hydraulic rod 14, then rotate the back plate 15 to adjust the angle between it and the fixed seat 4 to a suitable angle, and at the same time drive the leg support 5 to swing at the front end of the fixed seat 4. At this time, the seat plate 12 is pulled by the traction rope 13 to slide and adjust the position of the seat plate 12. Then close the hydraulic rod 14. In step 1, the seat plate 12 moves, and the traction rope 13 is pulled by the swing of the leg support 5 to slide on the outer wall of the guide wheel 18, pulling the slider 19 and the seat plate 12 to slide on the top side of the fixed seat 4, so that the distance between the seat plate 12 and the back plate 15 is shortened;

[0040] Specifically, the hydraulic lever 14 is activated to rotate the back panel 15. As the back panel 15 rotates, the angle between it and the fixed seat 4 gradually changes until it reaches the desired angle. Simultaneously, because the bottom end of the back panel 15 is connected to the leg rest 5 via a linkage assembly, the rotation of the back panel 15 causes the leg rest 5 to swing at the front end of the fixed seat 4. As the leg rest 5 swings, it pulls on the traction rope 13 connected to it. The traction rope 13 slides along the outer wall of the guide wheel 18. Guided by the guide wheel 18, the traction rope 13 stably transmits tension. The tension of the traction rope 13 acts on the slider 19, causing it to slide within the slot 16 provided at the middle end of the fixed seat 4, thereby driving the seat panel 12 to slide against the top side of the fixed seat 4. As the seat panel 12 slides, the distance between the seat panel 12 and the back panel 15 gradually decreases, satisfying the user's personalized requirements for the seat panel 12's position. After all components are adjusted to their proper positions, the hydraulic lever 14 is closed to maintain their current positions.

[0041] Step 2: Rotate the armrest 8 to disengage the limit block 9 from the top of the support rod 10, adjust the limit block 9 to a suitable position, and then rotate the support rod 10 to engage and secure the top of the limit block 9;

[0042] Specifically, the armrest 8 is rotated so that the stopper 9 fixed to the bottom of the armrest 8 disengages from the top of the support rod 10, which is rotatably connected to the top of the fixing block 11 on the outer wall of the fixing base 4. At this point, the armrest 8 can be moved freely, and the stopper 9 can be adjusted to the position the user deems appropriate. The support rod 10 is then rotated again to reengage its top end with the stopper 9, ensuring that the armrest 8 provides stable support for the user's arm.

[0043] Step 3: Pull down the headrest 7 to slide it on the middle end of the back plate 15 to ensure that the headrest 7 moves to the appropriate position;

[0044] Specifically, pull the headrest 7 downwards with your hands, and the headrest 7 will slide in the middle position of the back plate 15. By this sliding adjustment, the headrest 7 is moved to a place suitable for the user's head position and support requirements, ensuring that the user's head can be comfortably supported.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An adaptively adjustable seat, characterized in that: include: A bottom shaft (1), the top side of the bottom shaft (1) is fixedly connected to a sleeve (2), a sliding shaft (3) is provided inside the sleeve (2), the top side of the sliding shaft (3) is fixedly connected to a fixed seat (4), the top side of the fixed seat (4) is slidably connected to a seat plate (12), the bottom side of the seat plate (12) is fixedly connected to a slider (19), the rear end of the fixed seat (4) is rotatably connected to a back plate (15), the middle end of the back plate (15) is slidably connected to a headrest (7), the outer wall of the back plate (15) is provided with a back plate (6), the outer wall of the back plate (6) is rotatably connected to an armrest (8), the bottom side of the armrest (8) is connected to the outer wall of the fixed seat (4) through a limiting component, so as to support the armrest (8); A leg support (5) is rotatably connected to the front end of the fixed seat (4); the rear side of the leg support (5) is connected to the bottom end of the back plate (15) through a linkage component to control the swing of the leg support (5); a traction rope (13) is connected between the bottom side of the leg support (5) and the slider (19); the middle end of the traction rope (13) is connected to the headrest (7) through an elastic component to control the sliding of the headrest (7); the outer wall of the slider (19) is connected to the back plate (15) through a guide component to limit the sliding of the traction rope (13); the bottom end of the back plate (15) and the bottom side of the fixed seat (4) are connected through a hydraulic rod (14).

2. The adaptively adjustable seat according to claim 1, characterized in that: The limiting assembly comprises a limiting block (9) fixedly connected to the bottom side of the handrail (8); the outer wall of the fixing seat (4) is fixedly connected to a fixing block (11); the top side of the fixing block (11) is rotatably connected to a support rod (10); and the bottom end of the support rod (10) is arranged on the bottom side of the limiting block (9).

3. The adaptively adjustable seat according to claim 1, characterized in that: The linkage assembly comprises a connecting block (21) fixedly connected to the bottom side of the leg support (5); the bottom end of the back plate (15) is rotatably connected to a linkage shaft (20); and the front end of the linkage shaft (20) and the connecting block (21) are rotatably connected.

4. The adaptively adjustable seat according to claim 1, characterized in that: The elastic component comprises a circular limiting plate (17) fixedly connected to the middle end of the traction rope (13), the circular limiting plate (17) being arranged on the top side of the headrest (7), the middle end and one end of the traction rope (13) being both provided with springs, the upper side of the spring being arranged between the circular limiting plate (17) and the headrest (7).

5. The adaptively adjustable seat according to claim 1, characterized in that: The guide assembly includes a guide wheel (18) fixedly connected to the outer wall of the back plate (15), a sliding hole is opened at the bottom end of the back plate (15), the traction rope (13) is arranged on the outer wall of the guide wheel (18), and the traction rope (13) is arranged on the inner wall of the sliding hole.

6. The adaptively adjustable seat according to claim 1, characterized in that: A sliding groove (16) is provided at the middle end of the fixing seat (4), and the sliding block (19) is slidably connected to the inner wall of the sliding groove (16).

7. The adaptively adjustable seat according to claim 1, characterized in that: The driving end of the hydraulic rod (14) is rotatably connected to the bottom side of the fixed seat (4), and the non-driving end of the hydraulic rod (14) is rotatably connected to the bottom end of the back plate (15).

8. The adaptively adjustable seat according to claim 1, characterized in that: The sleeve (2) and the sliding shaft (3) are connected via bolts, and a soft cushion is provided on the top side of the handrail (8).

9. A method for using an adaptively adjustable seat, wherein the method for using an adaptively adjustable seat according to any one of claims 1 to 8 is characterized in that: The following steps are involved: Step 1: First, start the hydraulic rod (14), then rotate the back plate (15) to adjust the angle between it and the fixed seat (4) to a suitable angle, and at the same time drive the leg support (5) to swing at the front end of the fixed seat (4). At this time, pull the seat plate (12) by the traction rope (13) to slide and adjust the position of the seat plate (12), and then close the hydraulic rod (14); Step 2: Rotate the armrest (8) to disengage the limit block (9) from the top of the support rod (10), adjust the limit block (9) to a suitable position, and rotate the support rod (10) to engage and secure the top of the limit block (9). Step 3: Pull down the headrest (7) to slide it on the middle end of the backboard (15) to ensure that the headrest (7) moves to a suitable position.

10. The method for using a self-adjustable seat according to claim 9, characterized in that: In the step 1, the seat plate (12) moves, and the leg support (5) swings to pull the traction rope (13) to slide on the outer wall of the guide wheel 1 (8), pulling the slider (19) and the seat plate (12) to slide on the top side of the fixed seat (4), so that the distance between the seat plate (12) and the back plate (15) is shortened.

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