CN107080381B

CN107080381B - Chair tilting adjusting mechanism

Info

Publication number: CN107080381B
Application number: CN201710471463.XA
Authority: CN
Inventors: 陈千奎
Original assignee: Zhongwei Holding Group Co ltd
Current assignee: Zhongwei Holding Group Co ltd
Priority date: 2017-06-20
Filing date: 2017-06-20
Publication date: 2023-07-11
Anticipated expiration: 2037-06-20
Also published as: CN107080381A

Abstract

The invention discloses a chair tilting adjusting mechanism, which comprises a chassis, a turntable rotationally connected to the chassis through a rotating shaft, and an elastic resetting device arranged between the chassis and the turntable and used for always enabling the turntable to rotate towards one side of the rotating shaft, wherein a rotating gap is formed between the turntable and the chassis at the other side of the rotating shaft; the adjusting mechanism further comprises a locking piece capable of entering or exiting the rotating gap, a locking component which always enables the locking piece to have a movement trend of entering the rotating gap, and an unlocking component for pulling the locking piece to exit the rotating gap. The rotating gap is formed under the action of the elastic force of the elastic resetting device, and the locking component and the unlocking component are used for controlling the locking component to move, so that the locking component can be clamped into the rotating gap to limit the rotating disc to rotate, and the chair does not have tilting effect; the lock piece is pulled out of the rotating gap through the unlocking component, so that the chair has tilting effect.

Description

Chair tilting adjusting mechanism

Technical Field

The invention relates to a chair, in particular to a chair tilting adjusting mechanism.

Background

The prior patents such as patent publication numbers CN29226118 and CN102090805A disclose a leaning chair chassis, and the chair made of the chassis can enable a chair seat to incline at a certain angle during the use process, so that people can sit on the chair seat more comfortably.

The patent Chinese with the publication number CN29226118 and the application day of 2006, 7 and 17 discloses a lifting and tilting chair chassis, which consists of an upper disc, a middle disc and a knob, wherein the knob is fixed on the upper disc through a carriage screw, a dust cover, a washer and a spring are arranged on the middle disc, U-shaped iron is arranged on the middle disc, a U-shaped support frame is connected with a back steel plate seat and the upper disc, the back steel plate seat is connected with the middle disc through rivets, and the U-shaped support frame is connected with the back steel plate seat through rivets. The lifting pump is arranged on the middle disc, the lifting control switch is arranged on one side of the upper disc of the chair, and the upper disc is connected with the middle disc through rivets and bearings. When the chair is tilted, the spring plays a role in resetting the chair, and the resetting force of the spring on the chair can be adjusted by adjusting the elastic force of the spring.

The Chinese patent with the authority bulletin number of CN102090805A and the application date of 2009 of 12 months and 10 days discloses a seat chassis with adjustable tilting force, which comprises a middle disc and a large disc, wherein the rear part of the large disc can swing downwards relative to the middle disc around a rotating shaft, a knob is arranged below the front part of the middle disc and is provided with a cavity, a mounting plate fixed with the knob is arranged in the cavity of the knob, a worm wheel is arranged at the position, corresponding to the lower part of the mounting plate, of the knob, the worm wheel can rotate relative to the knob around the axis of the worm wheel, a worm meshed with the worm wheel is arranged beside the corresponding worm wheel in the knob, one end of the handle is inserted into the knob to be connected with the worm in a transmission way, an adjusting bolt sequentially penetrates through the mounting plates in the large disc, the middle disc and the knob from top to bottom and is matched with threads between the worm wheel, the adjusting bolt is coaxial with the worm wheel, and a spiral spring is sleeved at the position below the middle disc and above the mounting plate. Through the transmission connection of handle and worm, can drive worm drive when rotating the handle, the worm then drives the worm wheel and rotates, and the worm wheel then upwards or down removes along adjusting bolt's axis direction to make the mounting panel that is in the same place with the knob installation upwards or down remove, thereby adjust coil spring's compression degree, realize then adjusting coil spring and to the purpose of chair tilting power, its when the operation, the user need not to bend over, only need stretch the hand to chair one side hold the handle rotate can.

The two patents disclose two structures for adjusting the reset acting force, so that the reset acting force can be adjusted greatly and little when sitting on a chair made of the chassis, and the chair can adapt to the use requirements of various crowds. However, there is no chair in which the chassis of the chair can be selected according to the needs of the user to tilt.

Disclosure of Invention

The present invention provides a reclining mechanism for a seat, which has the effect of freely selecting whether or not a reclining function is provided.

The technical purpose of the invention is realized by the following technical scheme:

the seat tilting adjusting mechanism comprises a chassis, a rotary table rotatably connected to the chassis through a rotary shaft, and an elastic reset device arranged between the chassis and the rotary table and used for always enabling the rotary table to rotate towards one side of the rotary shaft, wherein a rotary gap is formed between the rotary table and the chassis at the other side of the rotary shaft; the adjusting mechanism further comprises a locking piece capable of entering or exiting the rotating gap, a locking component which always enables the locking piece to have a movement trend of entering the rotating gap, and an unlocking component for pulling the locking piece to exit the rotating gap.

The rotary table is arranged in such a way that the chassis and the rotary table connected by the rotary shaft form a structure capable of rotating mutually, and then a rotating gap is formed under the action of the elastic force of the elastic resetting device, so that when a person sitting on the chair leans backwards or forwards, the rotary table can correspondingly rotate around the rotary shaft to drive the chair seat to rotate, and the chair seat has certain tilting capability. In addition, the locking component and the unlocking component control the locking component to move, and the locking component is used for clamping the locking component into the rotating gap to limit the rotating disc to rotate, so that the chair does not have a tilting effect; the lock piece is pulled out of the rotating gap through the unlocking component, so that the chair has tilting effect.

Further preferred are: the unlocking component comprises a pull rope with one end connected to the lock piece and a winder for winding the pull rope to overcome elastic force.

When the tilting function is needed, the winding device is rotated to wind the pull rope on the winding device, so that the length of the pull rope between the winding device and the locking piece is shortened, the locking piece is driven to correspondingly displace by overcoming the movement trend of the locking component, and the locking piece is pulled out of the rotating gap; when the tilting function is not needed, the winding device is reversely rotated, and the pull rope is loosened, so that the locking piece is reset and is clamped into the rotating gap again under the action of the elastic force of the reset spring.

Further preferred are: the locking component comprises a reset spring with elastic force opposite to pull force of the pull rope and a retaining plate for the reset spring to abut against to generate elastic force.

So set up, set up through the butt plate and make reset spring be located between latch and the butt plate, make reset spring form the compression when the stay cord pulling unblock to make when the stay cord lengthens once more, realize the reset under reset spring's elastic force effect, thereby make the latch get into and rotate the clearance in spacing to the carousel.

Further preferred are: the lock piece is a sliding block which is connected to the turntable in a sliding way, and the elastic force of the return spring acts on the sliding block.

The sliding block is pulled by the pull rope to slide on the turntable so as to pull out the sliding block from the rotating gap to release the limitation of the turntable, so that the turntable can rotate; the locking piece is reset in the rotating clearance of the clamp under the action of the reset spring, so that the limitation of the turntable is realized.

Further preferred are: the lock piece comprises a rotating piece, a gear and a rack, wherein the rotating piece is connected with the rotating disc in a rotating mode, the gear is fixedly arranged on the rotating piece, the rack is meshed with the gear and connected with the pull rope, and the elastic force of the reset spring acts on the rack.

The device is arranged in such a way that the rack is pulled by the pull rope, the elastic force is overcome to do sliding motion, then the rotating piece is rotated by driving the gear to rotate, the rotating piece is rotated into the rotating gap or rotated out of the rotating gap, and the pull rope is reset under the action of the elastic force of the reset spring after being loosened.

Further preferred are: the both ends of stay cord all are provided with the joint spare, all correspond on latch fitting and the rolling ware and be provided with the draw-in groove that supplies the joint spare embedding and be used for accomodating the storage tank of stay cord.

The device is simple in structure and convenient to connect, and the stay cord is connected with the locking piece and the winder through the clamping beads and the clamping grooves.

Further preferred are: a hollow protection tube is arranged between the withstanding plate and the winder, and the pull rope is arranged in the hollow protection tube in a penetrating mode.

So set up, protect the stay cord through hollow protection tube, reduce its emergence when using because external cause causes stay cord fracture scheduling problem, improve its life.

Further preferred are: the winding device comprises a shell, a winding drum rotatably connected in the shell and a limiting clamping piece arranged on the shell and used for positioning the winding drum, wherein the clamping groove and the storage groove are arranged on the winding drum, and a poking piece penetrating through the shell and connected with the winding drum is arranged outside the shell.

The setting like this rotates a take-up section of thick bamboo rolling stay cord through the plectrum, and then overcomes reset spring's elastic force pulling latch, and when a take-up section of thick bamboo rotates certain angle (when the latch card goes into between chassis and the carousel or when the latch deviate from between chassis and the carousel), it is fixed with a take-up section of thick bamboo through spacing fastener, keeps the latch state.

Further preferred are: the limiting clamping piece is an elastic card which is bent to form a clamping bulge, and the wire collecting barrel is provided with a plurality of concave parts matched with the clamping bulge.

The elastic clamping piece is used as a limiting piece and is matched and clamped with the concave part on the winding drum, so that circumferential limiting fixation of the winding drum is realized, and the length of the pull rope is kept after the winding drum is rotated to adjust the length of the pull rope.

Further preferred are: the elastic resetting device comprises a pull rod connected with the chassis and the turntable, a compression spring sleeved on the pull rod, a pressing piece for pressing the compression spring on the chassis and a driving piece for controlling the pressing piece to axially move along the pull rod, wherein the driving piece is a knob or a worm gear mechanism.

The pull rod penetrates through the rotary table and the chassis to connect the rotary table and the chassis, then the compression spring is sleeved and is kept in a compressed state through the pressing piece, so that the elastic force of the compression spring acts on the chassis to keep the compression between the chassis and the rotary table to keep the rotary table at an initial position, and in addition, the elastic force on the compression spring is adjusted through the driving piece.

In summary, the invention has the following beneficial effects: the turntable is rotationally connected with the chassis, and under the action of the elastic resetting device, when a person sits on a chair made of the turntable, the person can lean backwards/forwards, so that the seat fixed on the turntable is driven to correspondingly rotate, the person sitting on the chair is more comfortable, the elastic force of the compression spring is regulated by the driving piece, the acting force required to drive the turntable to rotate can be controlled, and the person can correspondingly regulate according to the requirements of different weights and crowds; in addition, the limitation to the turntable is realized through the setting of the locking piece, whether the chair has the tilting function or not can be selected according to the requirement, and the unlocking component is adopted, so that the unlocking component can be arranged at a place convenient to operate, and people sitting on the chair can conveniently regulate and control.

Drawings

FIG. 1 is a schematic overall structure of the first embodiment;

fig. 2 is a schematic structural view of the first embodiment, showing the structure of the elastic restoring means;

fig. 3 is a front sectional view of the first embodiment;

FIG. 4 is a schematic view of the structure of the first embodiment after the turntable and the chassis are disassembled;

FIG. 5 is a schematic diagram showing the front structure of a turntable in the first embodiment;

FIG. 6 is a schematic view showing a back structure of a turntable in the first embodiment;

FIG. 7 is a schematic view of a lock and unlock assembly according to the first embodiment;

FIG. 8 is a schematic view of the structure of a slider in the first embodiment;

FIG. 9 is a schematic diagram of a structure and an installation structure of a limiting clip in the first embodiment;

fig. 10 is a schematic structural view of a take-up drum according to the first embodiment;

FIG. 11 is a schematic view of the structure of the housing of the unlocking assembly in the first embodiment;

FIG. 12 is a schematic view of a lock in the second embodiment;

FIG. 13 is a schematic view showing the overall structure of the third embodiment;

fig. 14 is a schematic structural view of a driving member in the third embodiment.

In the figure, 1, a turntable; 11. a sidewall; 12. a connection hole; 13. countersink; 14. arc-shaped protrusions; 2. a chassis; 21. a boss; 22. a side plate; 23. avoidance holes; 3. a rotating shaft; 4. an elastic resetting device; 41. a pull rod; 411. a blocking cap; 412. a limiting block; 42. a compression spring; 43. a corrugated sleeve; 44. a pressing piece; 441. a connecting wall; 45. a driving member; 451. a worm; 452. a worm wheel; 46. a joystick; 5. a lifting pump; 6. a locking assembly; 61. a connecting block; 611. a chute; 62. a retaining plate; 621. a limit protrusion; 63. a return spring; 7. a locking piece; 71. a slide block; 72. a rotating member; 73. a gear; 74. a rack; 75. a jack; 8. unlocking the assembly; 81. a pull rope; 82. a clamping piece; 83. a winder; 831. a housing; 8311. an opening; 832. a wire winding cylinder; 8321. a pulling piece; 8322. a plug hole; 8323. a recessed portion; 8324. a circular arc baffle; 833. a limit clamping piece; 8331. the clamping bulge; 84. a clamping groove; 85. a storage groove; 9. a hollow protection tube; 10. the gap is rotated.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications which do not creatively contribute to the present embodiment can be made by those skilled in the art after reading the present specification as required, but are protected by patent laws within the protection scope of the present invention.

Example 1: the chair tilting adjusting mechanism comprises a chassis 2 and a turntable 1, wherein one end of the chassis 2 is provided with a lifting pump 5, and the other end of the chassis 2 is provided with two side plates 22 to form a U-shaped connecting structure; the turntable 1 is connected with the seat of the chair, and is provided with two corresponding side walls 11 for inserting the two side plates 22 between, and the two side walls 11 and the two side plates 22 are connected through a rotating shaft 3 to form a tilted plate-shaped rotating structure.

Referring to fig. 2 and 3, elastic restoring means 4 are provided on the turntable 1 and the chassis 2, and the turntable 1 is pulled to be held on the other side by the elastic restoring means 4 to form a rotation gap 10. The elastic resetting device 4 comprises a pull rod 41, a compression spring 42, a pressing piece 44 and a driving piece 45, wherein a connecting hole 12 (see fig. 4) is formed in the rotary disc 1 at one side of the rotary shaft 3, a avoiding hole 23 (see fig. 4) is formed in the chassis 2 at the edge position of one side of the rotary shaft 3, a blocking cap 411 is arranged at one end of the pull rod 41, threads are formed at the other end of the pull rod, and one threaded end sequentially penetrates through the connecting hole 12, the avoiding hole 23, the compression spring 42 and the pressing piece 44 and then is in threaded connection with the driving piece 45. The two ends of the compression spring 42 are respectively abutted with the end face of the chassis 2 and the pressing piece 44, wherein the driving piece 45 is a hollow knob, the pressing piece 44 is accommodated in the knob, a corrugated sleeve 43 is sleeved outside the compression spring 42, and one end of the corrugated sleeve 43 is inserted in the knob.

Wherein, one end of the pull rod 41 provided with the blocking cap 411 is further provided with a cuboid limiting block 412, and the limiting block 412 is connected with the blocking cap 411. Referring to fig. 5, the connection hole 12 has a rectangular shape having the same width as the stopper 412 and a length longer than the stopper 412, so that the stopper 412 can be inserted into the connection hole 12 with a certain movable space. The edge of the connecting hole 12 on the turntable 1 is provided with a counter bore 13 which is sunken towards the direction of the chassis 2 so that the baffle cap 411 has a certain rotation space, thereby avoiding influencing the installation of the seat and the turntable 1, and the counter bore 13 is in an inverted quadrangular frustum shape.

Two circular arc-shaped protrusions 14 are arranged on two sides of the connecting hole 12, as shown in fig. 2, the avoidance hole 23 can be in a waist shape or a circular shape with a diameter larger than that of the pull rod 41, so that when the turntable 1 rotates to drive the pull rod 41 to move, the blocking cap 411 can correspondingly move on the circular arc-shaped protrusions 14, and the avoidance hole 23 can not limit the movement of the pull rod 41.

Referring to fig. 2, a boss 21 is provided at the edge of the avoidance hole 23, the diameter of the boss 21 is smaller than the inner diameter of the compression spring 42, and the compression spring 42 can be radially positioned through the boss 21, so that shaking and the like in the use process can be avoided.

As shown in fig. 1, a connecting block 61 is connected to one side of the turntable 1 opposite to the side provided with the elastic resetting device 4 through a nut, as shown in fig. 7, a T-shaped chute 611 is arranged on the connecting block 61, the direction of the chute 611 is along the length direction of the turntable 1, a sliding block 71 is slidingly connected to the chute 611 as a locking piece 7, and the sliding block 71 enters a rotating gap 10 (see fig. 3) to rotate and limit the turntable 1, otherwise, the turntable 1 can rotate under the action of external force.

As shown in fig. 8, two insertion holes 75 are provided on the slider 71, and referring to fig. 7, two limiting protrusions 621 are provided on the retaining plate 62, a return spring 63 is inserted into each of the two insertion holes 75, the retaining plate 62 perpendicular to the turntable 1 is provided on the connection block 61, the retaining plate 62 is located at one side of the slider 71 away from the rotation shaft 3, and the other end of the return spring 63 is sleeved on the limiting protrusion 621 and abuts against the retaining plate 62. Wherein the return spring 63 and the abutment plate 62 constitute the locking assembly 6.

Referring to fig. 7, the slider 71 is controlled by an unlocking component 8, the unlocking component 8 comprises a pull rope 81, a hollow protection tube 9 and a winding device 83, the winding device 83 comprises a housing 831, a winding drum 832 and a limiting clamping piece 833, an inserting hole 8322 is formed in the middle of the winding drum 832, the winding drum 832 is rotatably connected to the housing 831 through the inserting hole 8322 by a rotating shaft, a clamping groove 84 (see fig. 7) and a containing groove 85 for containing the pull rope 81 are formed in the winding device 83, and the containing groove 85 is communicated with the clamping groove 84, as shown in fig. 10. One end of the pull rope 81 passes through the shell 831 and then is clamped into the clamping groove 84 through a clamping piece 82 to realize the connection between the pull rope 81 and the winder 83, wherein the clamping piece 82 at the end is cylindrical. The winding drum 832 is provided with a poking piece 8321 exposed on the housing 831 for poking the winding drum 832 to rotate to store the pull rope 81 into the storage groove 85, as shown in fig. 11, the housing 831 is provided with an opening 8311 for poking the poking piece 8321, and the poking piece 8321 is provided with a circular arc baffle plate 8324 for closing the opening 8311.

As shown in fig. 9, the limiting clip 833 is an elastic clip formed with a clip protrusion 8331, the elastic clip is clipped on the housing 831, and two concave portions 8323 are provided on the winding drum 832 for clipping in the clip protrusion 8331 to limit the rotation of the winding drum 832.

Referring to fig. 7, a locking member 82 is also provided at the other end of the pull rope 81, the locking member 82 at the end is in the form of a bead, a locking groove 84 and a receiving groove 85 for receiving the pull rope 81 are also provided on the slider 71, the other end of the pull rope 81 passes through the retaining plate 62 and is locked into the locking groove 84 of the slider 71 by the locking member 82 to be connected, both ends of the hollow protection tube 9 are fixedly connected between the retaining plate 62 and the housing 831, and the pull rope 81 is inserted into the hollow protection tube 9.

The turntable 1 is rotatably connected with the chassis 2, and under the action of the elastic reset device 4, a person can lean backwards/forwards when sitting on a chair made of the turntable, so that the seat fixed on the turntable 1 is driven to rotate correspondingly, and the chair is reset to the initial position through the elastic force of the compression spring 42 after the external force is eliminated. In addition, the elastic force of the compression spring 42 can be adjusted by rotating the knob to control the force required to drive the turntable 1 to rotate, so that the force can be correspondingly adjusted according to the requirements of different weights and people.

In addition, the limitation to the turntable 1 is realized through the arrangement of the lock piece 7, whether the chair has a tilting function or not can be selected according to requirements, when the chair is in an initial position, the handle is wound on the wire winding device, the pull rope 81 pulls the sliding block 71 to compress the return spring 63 to enable the return spring 63 to be kept in a compressed state, and the sliding block 71 is not clamped between the turntable 1 and the chassis 2 at the moment, and the turntable 1 can drive the chair seat to rotate at the moment. When the rotation of the turntable 1 needs to be limited, the wire winding drum 832 is rotated to lengthen the pull rope 81, and the slider 71 is pushed down to the rotating shaft 3 under the action of the return spring 63 to be clamped between the turntable 1 and the chassis 2, and at this time, the slider 71 limits the rotation of the turntable 1.

Example 2: as shown in fig. 12, the difference from embodiment 1 is that in this embodiment, the lock member 7 includes a rotating member 72, a gear 73 and a rack 74, the transmitting member is in a rod shape, the gear 73 is fixedly provided at one end of the transmitting member, the transmitting member is rotatably connected to the turntable 1, and the gear 73 is located between the rotating member 72 and the turntable 1. The rack 74 is engaged with the gear 73, and is slidably connected to the connection block 61 in a sliding direction which is a direction of an axis of the rotation shaft 3. The retaining plate 62 is disposed on a plane perpendicular to the rotation shaft 3, and the rack 74 is provided with an insertion hole 75 into which the return spring 63 is inserted, and the other end of the return spring 63 abuts against the retaining plate 62. The locking groove 84 and the receiving groove 85 are provided on the rack 74, that is, the pulling rope 81 is connected to the rack 74.

The difference from embodiment 1 is that the pull rope 81 and the return spring 63 control the movement of the rack 74, the rack 74 drives the gear 73 to rotate, then drives the rotating member 72 to rotate, limits the turntable 1 when the end of the rotating member 72 is rotated between the turntable 1 and the chassis 2, and releases the limitation of the turntable 1 when the rotating member 72 is rotated out of between the turntable 1 and the chassis 2.

Example 3: as shown in fig. 13 and 14, the difference from embodiment 1 is that the driving member 45 is a worm gear mechanism, the pull rod 41 is threaded with the worm wheel 452 through one end of the pressing member 44, the pressing member 44 is pressed against the worm wheel 452 by the elastic force of the compression spring 42, and the connecting wall 441 is formed downward to wrap the worm wheel 452, and the worm 451 is engaged with the worm wheel 452 and fixedly connected to the operating rod 46 rotatably connected to the connecting wall 441.

The difference from embodiment 1 is that the provision of the worm 451 facilitates the control of the elastic return means 4 for a person sitting on the seat.

Claims

1. The utility model provides a seat adjustment mechanism that leans on, includes chassis (2), rotates carousel (1) of being connected on chassis (2) through pivot (3), locates between chassis (2) with carousel (1) are used for making all the time carousel (1) to pivot (3) one side pivoted motion trend's elasticity resetting means (4), characterized by: a rotating gap (10) is formed between the turntable (1) and the chassis (2) at the other side of the rotating shaft (3); the adjusting mechanism further comprises a lock (7) capable of entering or exiting the rotary gap (10), a locking component which always enables the lock (7) to have a movement trend of entering the rotary gap (10), and an unlocking component (8) for pulling the lock (7) to exit the rotary gap (10);

the unlocking component (8) comprises a pull rope (81) with one end connected to the lock piece (7) and a winder (83) for winding the pull rope (81) to overcome elastic force;

the locking assembly comprises a return spring (63) with elastic force opposite to the pulling force of the pulling rope (81), and a retaining plate (62) for abutting the return spring (63) to generate elastic force;

the lock (7) is a sliding block (71) which is connected to the turntable (1) in a sliding way, and the elastic force of the return spring (63) acts on the sliding block (71);

a hollow protection tube (9) is arranged between the abutting plate (62) and the winder (83), and the pull rope (81) is arranged in the hollow protection tube (9) in a penetrating mode.

2. A seat recline adjustment mechanism according to claim 1, characterized in that: both ends of stay cord (81) all are provided with joint spare (811), all correspond on latch (7) and the rolling ware (83) and be provided with draw-in groove (84) that supply joint spare (811) to imbed and be used for accomodating stay cord (81) accomodate groove (85).

3. A seat recline mechanism according to claim 2, wherein: the winder (83) comprises a shell (831), a winding drum (832) rotatably connected in the shell (831) and a limiting clamping piece (833) arranged on the shell (831) and used for positioning the winding drum (832), wherein the clamping groove (84) and the storage groove (85) are arranged on the winding drum (832), and a pulling piece (8321) penetrating through the shell (831) and connected with the winding drum (832) is arranged outside the shell (831).

4. A seat recline mechanism according to claim 3 wherein: the limiting clamping piece (833) is an elastic card which is bent to form a clamping protrusion (8331), and the wire collecting barrel (832) is provided with a plurality of concave parts (8323) matched with the clamping protrusion (8331).

5. A seat recline adjustment mechanism according to claim 1, characterized in that: the elastic resetting device (4) comprises a pull rod (41) connected with the chassis (2) and the rotary table (1), a compression spring (42) sleeved on the pull rod (41), a pressing piece (44) for pressing the compression spring (42) on the chassis (2) and a driving piece (45) for controlling the pressing piece (44) to axially move along the pull rod (41), wherein the driving piece (45) is a knob or a worm and gear mechanism.

6. The utility model provides a seat adjustment mechanism that leans on, includes chassis (2), rotates carousel (1) of being connected on chassis (2) through pivot (3), locates between chassis (2) with carousel (1) are used for making all the time carousel (1) to pivot (3) one side pivoted motion trend's elasticity resetting means (4), characterized by: a rotating gap (10) is formed between the turntable (1) and the chassis (2) at the other side of the rotating shaft (3); the adjusting mechanism further comprises a lock (7) capable of entering or exiting the rotary gap (10), a locking component which always enables the lock (7) to have a movement trend of entering the rotary gap (10), and an unlocking component (8) for pulling the lock (7) to exit the rotary gap (10);

the lock (7) comprises a rotating part (72) which is rotationally connected with the turntable (1), a gear (73) which is fixedly arranged on the rotating part (72), and a rack (74) which is meshed with the gear (73) and is connected with the stay cord (81), wherein the elastic force of the return spring (63) acts on the rack (74);

7. The seat recline mechanism according to claim 6 wherein: both ends of stay cord (81) all are provided with joint spare (811), all correspond on latch (7) and the rolling ware (83) and be provided with draw-in groove (84) that supply joint spare (811) to imbed and be used for accomodating stay cord (81) accomodate groove (85).

8. The seat recline mechanism according to claim 7 wherein: the winder (83) comprises a shell (831), a winding drum (832) rotatably connected in the shell (831) and a limiting clamping piece (833) arranged on the shell (831) and used for positioning the winding drum (832), wherein the clamping groove (84) and the storage groove (85) are arranged on the winding drum (832), and a pulling piece (8321) penetrating through the shell (831) and connected with the winding drum (832) is arranged outside the shell (831).

9. A seat recline mechanism according to claim 8 wherein: the limiting clamping piece (833) is an elastic card which is bent to form a clamping protrusion (8331), and the wire collecting barrel (832) is provided with a plurality of concave parts (8323) matched with the clamping protrusion (8331).

10. The seat recline mechanism according to claim 6 wherein: the elastic resetting device (4) comprises a pull rod (41) connected with the chassis (2) and the rotary table (1), a compression spring (42) sleeved on the pull rod (41), a pressing piece (44) for pressing the compression spring (42) on the chassis (2) and a driving piece (45) for controlling the pressing piece (44) to axially move along the pull rod (41), wherein the driving piece (45) is a knob or a worm and gear mechanism.