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CN-121987036-A - Configuration and use method of self-adaptive forward-leaning seat

CN121987036ACN 121987036 ACN121987036 ACN 121987036ACN-121987036-A

Abstract

The invention discloses a configuration and use method of a self-adaptive forward-leaning seat, which comprises the steps of configuring a seat back supporting piece and a chassis, assembling, using and the like, wherein the chassis with a dynamic forward-leaning component is arranged on a seat, so that the seat and the seat can form self-adaptive support for a sitting person with the forward-leaning gravity center, the seat and a seat back can adapt to the sitting posture change of the sitting person, the ergonomics are better met, and the comfort and the use experience of the seat are improved.

Inventors

  • WANG DAQIU
  • ZHOU JUN

Assignees

  • 浙江摩伽智能家居有限公司

Dates

Publication Date
20260508
Application Date
20260203

Claims (12)

  1. 1. The configuration and use method of the self-adaptive forward-leaning seat is characterized by comprising the following steps: The seat back supporting assembly comprises a seat base and a seat back (3) capable of synchronously moving along with the seat base, wherein the chassis comprises a base (1) and a dynamic forward tilting assembly, the dynamic forward tilting assembly comprises an upper swinging seat (4) and a lower forward tilting seat (5), the upper swinging seat (4) is hinged on the base (1) and can rotate up and down, a front connecting rod (6) and a rear connecting rod (7) are arranged between the upper swinging seat (4) and the lower forward tilting seat (5), two ends of the front connecting rod (6) are respectively hinged with the upper swinging seat (4) and the lower forward tilting seat (5), two ends of the rear connecting rod (7) are respectively hinged with the upper swinging seat (4) and the lower forward tilting seat (5), the front connecting rod (6) and the rear connecting rod (7) form a four-connecting rod mechanism, and any one of the lower forward tilting seat (5), the front connecting rod (6) and the rear connecting rod (7) is selected as a linkage piece, and a linkage rod (8) is arranged between the base (1) and the linkage piece, and two ends of the linkage rod (8) are respectively hinged with the base (1) and the linkage piece; S2, assembling, namely fixedly connecting the chair seat with the downward-forward tilting seat (5) so that the downward-forward tilting seat (5) can be linked with the chair seat; and S3, triggering the front end of the lower forward tilting seat (5) to rotate downwards when the gravity center of a seated person sitting on the seat leans forwards, and enabling the linkage rod (8) to rotate and enable the four-bar mechanism to deform at the moment so as to synchronously link the lower forward tilting seat (5) to move forwards and downwards, so that the whole seat back supporting assembly moves forwards and downwards.
  2. 2. The method according to claim 1, wherein in step S3, when the seated user leaves the seat support (2), the four-bar linkage mechanism and the linkage rod (8) are reset under the action of self gravity, so that the seat and the backrest (3) are restored to the initial positions.
  3. 3. The method according to claim 1, wherein in step S1, the four-bar linkage is a parallelogram linkage, and in step S3, the angle of downward deflection of the upper swing seat (4) and the lower forward tilting seat (5) is the same.
  4. 4. The method for configuring and using the self-adaptive forward-leaning seat as set forth in claim 1, wherein the linkage member is a front connecting rod (6), one end of the linkage rod (8) is hinged with the base (1), and the other end of the linkage rod (8) extends forward and upward and is hinged with the front connecting rod (6).
  5. 5. The method for configuring and using the adaptive forward tilting seat according to claim 4, wherein the hinge position of the linkage rod (8) and the front connecting rod (6) is higher than the longitudinal middle position of the front connecting rod (6).
  6. 6. The method of configuring and using an adaptive forward tilting seat according to claim 1, wherein the hinge position between the upper swing seat (4) and the base (1) is further rearward than the middle position of the upper swing seat (4).
  7. 7. The seat according to claim 1, wherein the back (3) is fixedly or rotatably connected to the rear end of the seat in step S1, and wherein the back (3) is forwardly tilted and downwardly moved in synchronization with the seat in step S3.
  8. 8. The method according to claim 1, wherein the upper swing seat (4) comprises an upper transverse plate (41) and side plates (42) integrally connected to the left and right sides of the upper transverse plate (41) and extending downwards, the base (1) comprises a bottom plate and vertical plates (13) integrally connected to the left and right sides of the bottom plate and extending upwards, the side plates (42) are hinged with the corresponding vertical plates (13), in the step S1, the base plate further comprises a rotation limiting mechanism, the rotation limiting mechanism comprises a transverse shaft (91) penetrating through the side plates (42) and a strip-shaped limiting groove (11) arranged on the vertical plates (13), the transverse shaft (91) is in sliding fit in the strip-shaped limiting groove (11), and in the step S3, the transverse shaft (91) slides in the strip-shaped limiting groove (11) to limit the swinging angle of the lower forward seat (5) within a preset range.
  9. 9. The method according to claim 1, wherein the upper swing seat (4) comprises an upper transverse plate (41) and side plates (42) integrally connected to the left and right sides of the upper transverse plate (41) and extending downwards, the chassis further comprises a control assembly in step S1, the control assembly comprises a transverse shaft (91) penetrating through the side plates (42), a locking piece (9) movably connected to the base (1), a movable space is formed between the transverse shaft (91) and the base (1), and the locking piece (9) can move under the action of external force and fill or withdraw from the movable space, so that the four-bar mechanism is kept in a locking state or switched to an unlocking state capable of freely deforming.
  10. 10. The method for configuring and using the self-adaptive forward-leaning seat as set forth in claim 9, wherein a control switch is arranged outside the base (1), the control switch is connected with the locking piece (9) through a pull wire, and the pull wire is controlled to be tensioned or loosened to drive the locking piece (9) to move and fill or withdraw from the moving space.
  11. 11. The method for configuring and using the self-adaptive forward-leaning seat according to claim 10, wherein an elastic piece is arranged between the locking piece (9) and the base (1), the elastic piece is configured to force the locking piece (9) to always have a trend of moving towards the moving space when the stay wire is released, the elastic piece deforms when the stay wire is tensioned and the locking piece (9) is pulled to move under the control of the switch, the locking piece (9) is withdrawn from the moving space, and the locking piece (9) moves under the action of the elastic piece and fills the moving space when the stay wire is released.
  12. 12. The configuration and use method of the self-adaptive forward-leaning seat is characterized by comprising the following steps: The seat back supporting assembly comprises a seat base and a seat back (3) capable of synchronously moving along with the seat base, wherein the seat back supporting assembly comprises a seat base (1) and a dynamic forward tilting assembly, the dynamic forward tilting assembly comprises an upper swinging seat (4) and a lower forward tilting seat (5), the upper swinging seat (4) is hinged on the seat base (1) and can rotate up and down, a front connecting rod (6) and a rear connecting rod (7) are arranged between the upper swinging seat (4) and the lower forward tilting seat (5), two ends of the front connecting rod (6) are respectively hinged with the upper swinging seat (4) and the lower forward tilting seat (5), two ends of the rear connecting rod (7) are respectively hinged with the upper swinging seat (4) and the lower forward tilting seat (5), the front connecting rod (6) and the rear connecting rod (7) form a four-connecting rod mechanism, any one of the lower forward tilting seat (5), the front connecting rod (6) and the rear connecting rod (7) is selected as a guide rail, a structure is arranged between the seat base (1) and the linkage structure comprises a guide rail (82) which is arranged on the seat base (1) and the linkage guide rail (82) and the other guide rail (82) which extends in the longitudinal direction along the guide rail (81); S2, assembling, namely fixedly connecting the chair seat with the downward-forward tilting seat (5) so that the downward-forward tilting seat (5) can be linked with the chair seat; And S3, triggering the front end of the downward-forward tilting seat (5) to rotate downwards when the gravity center of a seated person sitting on the seat leans forwards, and prompting the four-bar mechanism to deform under the guiding action of the linkage structure so as to synchronously link the downward-forward tilting seat (5) to move forwards and downwards so as to enable the whole seat back supporting assembly to move forwards and downwards.

Description

Configuration and use method of self-adaptive forward-leaning seat Technical Field The invention relates to the field of seats, in particular to a self-adaptive forward-leaning seat configuration and a use method thereof. Background Most office chairs or ergonomic chairs are provided with a chassis to realize the functions of leaning forward and backward of the chair back, the most common chair chassis comprises a base, a seat connecting piece and a back connecting piece hinged on the base, the seat and the back connecting piece are respectively used for installing the chair back and the chair seat, a linkage structure is arranged between the back connecting piece and the seat connecting piece, when the chair back is switched from an upright state to a leaning backward state, the seat and the back connecting piece can synchronously move, and the buttocks and the back with the angle position changed form a fit support, but most of chair chassis does not consider the situation when a sitting person is switched from an upright sitting posture to a leaning forward posture, so that the seat connecting piece and the back connecting piece in most of chair chassis do not have the function of leaning forward, so that the chair seat and the chair back are difficult to adapt to the sitting posture change of the sitting person, and sitting comfort is affected. When the sitting person is switched from the upright state to the forward leaning state, the included angle between the upper body and the lower body of the sitting person is reduced, the buttocks and the hips have a tendency to move forward and downward, the overall sitting center of gravity of the sitting person is also moved forward, the chair seat kept at the initial position cannot adapt to the change of the center of gravity of the sitting person, so that the chair seat forms larger pressure on the hips and the buttocks of the sitting person, meanwhile, when the sitting person leans forward, the waist and the back of the sitting person also leave the chair back, so that larger empty space appears between the chair back and the waist and back, the joint support on the waist and back in the forward leaning state is lacked, uncomfortable feeling is caused, and health problems such as lumbar muscle strain can occur when the sitting posture is kept for a long time. Disclosure of Invention The invention provides a configuration and a use method of a self-adaptive forward-leaning seat, wherein a chassis with a dynamic forward-leaning component is arranged on a seat, so that the seat and the seat can form self-adaptive support for a seated user with the forward-leaning center of gravity, the seat and the seat back can adapt to the sitting posture change of the seated user, the ergonomics are more met, and the comfort and the use experience of the seat are improved. The technical scheme of the invention is realized as follows: a configuration and use method of a self-adaptive forward-leaning seat comprises the following steps: The device comprises a seat back supporting component and a chassis, wherein the seat back supporting component comprises a seat base and a seat back capable of synchronously moving along with the seat base, the chassis comprises a base and a dynamic forward tilting component, the dynamic forward tilting component comprises an upper swinging seat and a lower forward tilting seat, the upper swinging seat is hinged on the base and can rotate up and down, a front connecting rod and a rear connecting rod are arranged between the upper swinging seat and the lower forward tilting seat, two ends of the front connecting rod are respectively hinged with the upper swinging seat and the lower forward tilting seat, two ends of the rear connecting rod are respectively hinged with the upper swinging seat and the lower forward tilting seat, a four-connecting-rod mechanism is formed between the upper swinging seat, the lower forward tilting seat, the front connecting rod and the rear connecting rod, and a linkage rod is arranged between the lower forward tilting seat, the front connecting rod and the rear connecting rod and is respectively hinged with the base and the linkage piece; s2, assembling, namely fixedly connecting the chair seat with the downward-forward tilting seat so that the downward-forward tilting seat can be linked with the chair seat; And S3, triggering the front end of the downward-forward tilting seat to rotate downwards when the gravity center of a seated person sitting on the seat leans forwards, and enabling the linkage rod to rotate and enable the four-bar mechanism to deform at the moment so as to synchronously link the downward-forward tilting seat to move forwards and downwards, so that the whole seat back supporting assembly moves forwards and downwards. Preferably, in step S3, when the seated user leaves the seat support, the four-bar linkage and the linkage bar are reset under the action of self-gravity, so that the seat and the