CN114376365B

CN114376365B - Integrated seat

Info

Publication number: CN114376365B
Application number: CN202110266843.6A
Authority: CN
Inventors: 石章能; 张明; 龙德学; 陆智; 李德山; 石强
Original assignee: Borgerui Chongqing Technology Co ltd
Current assignee: Borgerui Chongqing Technology Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2024-06-11
Anticipated expiration: 2041-03-11
Also published as: CN114376365A

Abstract

The invention discloses an integrated seat, which comprises a supporting base, a seat cushion and a backrest, wherein the seat cushion is positioned above the supporting base, the rear part of the seat cushion is hinged with the supporting base, the lower part of the backrest is hinged with the supporting base, and a synchronous linkage mechanism is connected between the seat cushion and the backrest; the seat cushion is provided with a leg support assembly, the leg support assembly comprises a leg support linear drawing assembly and a leg support body, the leg support linear drawing assembly is arranged on the seat cushion, and the leg support body is arranged at the front part of the leg support linear drawing assembly. The invention has the remarkable effects that the synergy of the seat backrest, the seat basin and the seat cushion during rotation adjustment can be improved; the turnover resistance can be adjusted independently according to different customer demands, the turnover resistance has a self-recovery function after adjustment, and the leg support can be turned over when being pulled back and forth, so that one-step unfolding or storage can be performed, a complex connecting rod mechanism is avoided, the structure is greatly simplified, and the cost is reduced.

Description

Integrated seat

Technical Field

The present invention relates to a functional seat.

Background

Office chairs are important office appliances. Along with the increasing demand of office groups for the comfort of office chairs, office chairs gradually develop towards a multifunctional direction. At present, the multifunctional office chair mainly meets the following requirements besides meeting the requirements of people for sitting:

1. the seat backrest can be tilted, and the tilting angle can be adjusted and fixed to meet different lying requirements of passengers, such as half lying or full lying;

2. the seat cushion of the seat can be turned over by a certain angle, so that the front part of the seat cushion is upward and the rear part of the seat cushion is downward, and knees of passengers are lifted to different degrees;

3. When a passenger takes a rest, the seat can be provided with the leg support to support the legs, so that the comfort is improved.

To meet the above needs, engineers in the related art have some research results, and can individually meet the corresponding needs. However, due to the lack of overall arrangement, on one hand, the structure adopted by the prior art is not compact enough, on the other hand, after the functions are combined by adopting the prior art, the structure of the office chair is complex and heavy, the interference among the structures corresponding to the functions is serious, and the defects of heavy weight, poor attractiveness and the like exist. It is therefore necessary to re-orchestrate the implementation of individual requirements, integrating the functions. In the integration process, planning and designing are needed to be carried out again on various structural components and linkage relations.

Disclosure of Invention

In view of this, the present invention provides an integrated seat.

The technical scheme is as follows:

An integrated seat is characterized in that: the device comprises a supporting base, a seat cushion and a backrest, wherein the seat cushion is positioned above the supporting base, the rear part of the seat cushion is hinged with the supporting base, the lower part of the backrest is hinged with the supporting base, and a synchronous linkage mechanism is connected between the seat cushion and the backrest and is used for correlating the rotation power of the seat cushion and the rotation power of the backrest so that the seat cushion and the backrest can rotate relatively along with the rotation;

Be equipped with the leg on the seatpad and hold in the palm the subassembly, the leg holds in the palm the subassembly and holds in the palm the body including leg holds in the palm sharp pull subassembly and leg, the leg holds in the palm sharp pull subassembly and installs on the seatpad, the leg holds in the palm sharp pull subassembly and follows the fore-and-aft direction of seatpad is arranged, the leg holds in the palm the body and installs the front portion of leg holds in the palm sharp pull subassembly.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic view of the mounting relationship of the synchronous linkage mechanism and the support base 90 in a first state;

FIG. 4 is a schematic diagram showing the mounting relationship between the synchronous linkage mechanism and the support base 90 in the second state;

FIG. 5 is a layout view of a damping adjustment mechanism and a flip lock mechanism;

FIG. 6 is a cross-sectional view of X-X' of FIG. 5;

FIG. 7 is a schematic view showing the connection of the seat cushion lifting link 66, the seat cushion linkage swivel 67 and the seat cushion 50 in a first view;

FIG. 8 is a schematic view showing the connection of the seat cushion lifting link 66, the seat cushion linkage swivel 67 and the seat cushion 50 in a second view;

fig. 9 is a mounting relationship diagram of the leg rest body 3 and the leg rest linear drawing assembly;

FIG. 10 is a Z-Z' cross-sectional view of FIG. 9;

FIG. 11 is a cross-sectional view of Y-Y' of FIG. 9;

fig. 12 is an enlarged view of a portion a of fig. 10;

FIG. 13 is a schematic diagram showing the mating relationship of the push-pull screw 22 with the screw swivel mount 23 and the push block 27;

fig. 14 is an enlarged view of a portion B of fig. 13;

fig. 15 is a schematic structural view of the friction reducing pad 103.

Detailed Description

The invention is further described below with reference to examples and figures.

As shown in fig. 1 to 15, an integrated seat comprises a supporting base 90, a seat cushion 50 and a backrest, wherein the seat cushion 50 is positioned above the supporting base 90, the rear part of the seat cushion 50 is hinged with the supporting base 90, the lower part of the backrest is hinged with the supporting base 90, and a synchronous linkage mechanism is connected between the seat cushion 50 and the backrest and is used for correlating the rotation power of the seat cushion 50 and the rotation power of the backrest so as to enable the seat cushion 50 and the backrest to rotate relatively along with each other;

A damping adjustment mechanism is provided on the support base 90, and acts with the backrest or the seat cushion 50 to adjust the rotation resistance;

The support base 90 is also provided with a turnover locking mechanism which acts with the backrest or the seat cushion 50 to lock in place;

be equipped with the leg support subassembly on the seatpad 50, the leg support subassembly includes leg support straight line pull subassembly and leg support body 3, the leg support straight line pull subassembly is installed on the seatpad 50, the leg support straight line pull subassembly is followed the fore-and-aft direction of seatpad 50 is arranged and is located the middle part of seatpad 50, damping adjustment mechanism with upset locking mechanical system divide to be resident in the both sides of leg support straight line pull subassembly, the leg support body 3 is installed the front portion of leg support straight line pull subassembly.

The synchronous linkage mechanism comprises a seat-rest linkage swivel seat 67, the seat-rest linkage swivel seat 67 is hinged with the rear part of the support base 90, and the seat-rest linkage swivel seat 67 rotates on the support base 90 around a hinge point thereof;

the backrest is fixed on the backrest linkage swivel seat 67, and the seat cushion 50 is hinged with the backrest linkage swivel seat 67;

The seat cushion linkage swivel seat 67 is connected with a seat cushion lifting connecting rod 66, one end of the seat cushion lifting connecting rod 66 is hinged with the seat cushion linkage swivel seat 67, and the other end of the seat cushion lifting connecting rod 66 is hinged with the seat cushion 50;

The seat linkage swivel seat 67 comprises a linkage pushing seat 671 and a linkage pushing arm 672, the linkage pushing seat 671 is hinged with the supporting base 90, one end of the linkage pushing arm 672 is connected with the linkage pushing seat 671, the other end of the linkage pushing arm 672 extends forwards, and the front end of the linkage pushing arm 672 is hinged with the seat cushion lifting connecting rod 66.

The damping adjustment mechanism comprises an elastic piece 51 and a pre-tightening adjustment assembly 52, wherein the pre-tightening adjustment assembly 52 is fixed on the support base 90;

The elastic piece 51 is connected with the seat backrest linkage swivel seat 67 to provide a rotation resistance to the seat backrest linkage swivel seat; the pre-tightening adjusting component 52 is connected with the elastic piece 51 to adjust the pre-tightening force thereof;

The pretension adjusting assembly 52 includes an elastic member restraining base 521, the elastic member restraining base 521 is fixed on the supporting base 90, a strip-shaped restraining hole is provided on the elastic member restraining base 521, the length direction of the strip-shaped restraining hole is set along the deformation direction of the elastic member 51, the elastic member 51 is deformed by moving along the strip-shaped restraining hole through a clamping head, and an elastic member pushing mechanism is further provided on the elastic member restraining base 521, and acts on the elastic member 51 to cause the elastic member pushing mechanism to deform along the direction of the strip-shaped restraining hole;

The elastic member pushing mechanism comprises a pushing cam 522, wherein the pushing cam 522 is arranged on the elastic member restraining seat 521 through a cam shaft, and the pushing cam 522 is arranged corresponding to the elastic member 51 and is contacted with the elastic member 51;

A driven gear 523 is fixedly sleeved on the cam shaft, a driving gear 524 is mounted on the supporting base 90, the driving gear 524 is meshed with the driven gear 523, the driving gear 524 is mounted on the supporting base 90 through a gear shaft, and a handle 525 is further fixed on the gear shaft;

the turnover locking mechanism comprises a controllable gas spring 42 and a locking support 41, wherein the locking support 41 is fixed on the supporting base 90; one end of the controllable gas spring 42 is hinged to the supporting base 90, and the other end of the controllable gas spring 42 is hinged to the seat rest linkage swivel seat 67.

The controllable gas spring 42 is in the prior art, has a function of stopping at any position, is provided with an unlocking inhaul cable, and can unlock the controllable gas spring 42 by arranging a handle or a buckle to operate the unlocking inhaul cable, the controllable gas spring 42 can automatically stretch in an unlocking state, and the controllable gas spring 2 cannot stretch in a locking state.

In order to adapt to different basin adjustment requirements: a lifting constraint track is further arranged on the supporting base 90, and a hinge point of the seat cushion lifting connecting rod 66 and the seat cushion linkage swivel seat 67 is limited by the lifting constraint track and moves according to the set constraint track;

The specific constraint track scheme may be: the supporting base 90 is provided with a clamping groove, the clamping groove is arranged along the lifting constraint track, the seat cushion lifting connecting rod 66 is hinged with the seat cushion linkage swivel seat 67 through a track constraint shaft 65, and one end of the track constraint shaft 65 is inserted into the clamping groove and moves along the lifting constraint track.

According to the trend of the lifting constraint track:

When the lifting constraint track is a constraint arc, and the center of the constraint arc is coincident with the hinge point of the linkage propulsion seat 671 and the support base 90, the linkage propulsion arm 672 and the linkage propulsion seat 671 may be hinged or may be fixed;

When the lifting constraint track is set arbitrarily instead of an arc, or the center of the arc does not coincide with the hinge point of the linkage pushing seat 671 and the support base 90, the linkage pushing arm 672 and the linkage pushing seat 671 should be hinged.

The supporting base 90 comprises a shell bottom 91, edges of the shell bottom 91 are respectively turned upwards to form shell flanges 92, the inner walls of the two shell flanges 92 which are right and left opposite to each other are respectively hinged with the seat cushion linkage swivel seat 67, and the seat cushion linkage swivel seat 67 is respectively connected with the seat cushion lifting connecting rod 66; the elastic piece 51 is connected with one of the seat-rest linkage swivel bases 67, and the pre-tightening adjusting component 52 is positioned in front of the corresponding seat-rest linkage swivel base 67; the controllable gas spring 42 is hinged with the other seat-rest linkage swivel seat 67, and the locking support 41 is positioned in front of the corresponding seat-rest linkage swivel seat 67; the two right and left opposite seat-rest linkage swivel bases 67 are connected through a lifting synchronizing rod 673.

The backrest comprises a backrest body and backrest connecting plates 4x, the outer side of the flange 92 of the shell is provided with backrest connecting plates 4x corresponding to each backrest linkage swivel seat 67, the backrest connecting plates 4x are fixedly connected with the hinge shafts of the backrest linkage swivel seats 67, the backrest connecting plates 4x extend to the rear of the seat cushion 50 and are turned inwards again to form backrest fixing parts, backrest fixing holes are formed in the backrest fixing parts, and the backrest connecting plates 4x on the left side and the right side are connected with the same backrest body (not shown in the figure).

The leg support linear drawing component comprises a drawing fixing part and a drawing sliding part which are assembled in a sliding way along the front-back direction of the seat cushion 50, wherein the drawing fixing part is arranged on the seat cushion 50, a leg support mounting seat is arranged at the front part of the drawing sliding part, the leg support body 3 is hinged with the leg support mounting seat, and the drawing sliding part drives the leg support body 3 to advance and retreat along the drawing fixing part;

The drawing sliding part is provided with a secondary propelling mechanism which is connected with the leg rest body 3, and the secondary propelling mechanism pushes the leg rest body 3 to rotate.

The drawing sliding part comprises a leg support sliding seat and a push-pull screw rod 22, wherein the leg support sliding seat is in sliding assembly with the drawing fixing part, the push-pull screw rod 22 is axially fixedly connected with the leg support sliding seat, the push-pull screw rod 22 is in annular rotation connection with the leg support sliding seat, and the push-pull screw rod 22 is connected with a screw rod rotating mechanism which drives the push-pull screw rod 22 to rotate;

the device also comprises a turning nut 24, wherein the turning nut 24 and the seat cushion 50 are kept relatively fixed, and the turning nut 24 is sleeved on the push-pull screw 22 in a threaded manner;

The secondary propelling mechanism comprises a propelling block 27, the propelling block 27 is assembled with the leg support sliding seat in a sliding way, the propelling block 27 is in threaded sleeve joint with the push-pull screw rod 22, a leg support overturning connecting rod 29 is connected between the propelling block 27 and the leg support body 3, and two ends of the leg support overturning connecting rod 29 are respectively hinged with the propelling block 27 and the leg support body 3;

the screw rotating mechanism comprises a screw driving seat 21 and a screw rotating seat 23, the screw driving seat 21 and the seat cushion 50 are kept relatively fixed, the screw rotating seat 23 is rotationally assembled on the screw driving seat 21, a screw through hole is penetrated through the screw rotating seat 23, the push-pull screw 22 is penetrated in the screw through hole, the push-pull screw 22 is axially and slidably matched with the screw rotating seat 23, and the screw body 22 and the screw rotating seat 23 are annularly fixed;

The leg support sliding seat comprises a sliding inner pipe 102, the push-pull screw rod 22 is positioned in the sliding inner pipe 102 and is parallel to the length direction of the sliding inner pipe, sealing seats are fixed at two ends of the sliding inner pipe 102, two ends of the push-pull screw rod 22 are respectively arranged on the corresponding sealing seats, the end part of the push-pull screw rod 22 is axially and fixedly connected with the corresponding sealing seats, and the end part of the push-pull screw rod 22 is in annular rotation connection with the corresponding sealing seats;

The screw rod swivel mount 23, the turning nut 24 and the pushing block 27 are all positioned in the sliding inner pipe 102, the pushing block 27 is embedded in the sliding inner pipe 102 in a sliding manner, and the pushing block 27 is positioned in front of the screw rod swivel mount 23 and the turning nut 24;

The drawing fixing part comprises a guide outer cylinder 101, wherein the guide outer cylinder 101 is fixed on the seat cushion 50, the guide outer cylinder 101 is arranged along the front-back direction of the seat cushion 50, and the sliding inner tube 102 is movably inserted into the guide outer cylinder 101;

The cylinder wall of the guide outer cylinder 101 is penetrated with a driving yielding hole, the sliding inner tube 102 is provided with a strip-shaped sliding yielding hole along the length direction thereof, the driving yielding hole corresponds to the sliding yielding hole and is communicated with the sliding yielding hole, the screw driving seat 21 sequentially extends into the sliding inner tube 102 from the driving yielding hole and the sliding yielding hole, and the turning nut 24 is fixed on the screw driving seat 21.

A sliding concave part is arranged on the outer wall of the push-pull screw 22 along the axial direction of the push-pull screw, the sliding concave part cuts off the screw teeth of the push-pull screw 22, a sliding convex part is fixed on the wall of the screw perforation, and the sliding convex part corresponds to the sliding concave part and is matched with the sliding concave part;

The sliding protruding part is axially matched with the sliding concave part in a sliding way, and the sliding protruding part is axially and annularly fixed with the sliding concave part;

To reduce the sliding friction of the sliding inner tube 102 in the guide outer tube 101: an antifriction pad 103 is arranged between the guide outer cylinder 101 and the sliding inner tube 102, the outer wall of the antifriction pad 103 is abutted against the inner wall of the guide outer cylinder 101, a positioning convex block 103a is arranged on the outer wall of the antifriction pad 103, an antifriction pad clamping hole penetrates through the cylinder wall of the guide outer cylinder 101, the antifriction pad clamping hole corresponds to the positioning convex block 103a and is sleeved with the positioning convex block in a penetrating manner, a plurality of antifriction convex strips 103b are arranged on the inner wall of the antifriction pad 103, and the antifriction convex strips 103b are abutted against the inner wall of the sliding inner tube 102;

The guiding outer cylinder 101 and the sliding inner tube 102 are rectangular tubes, the antifriction pads 103 are in a C shape, two antifriction pads 103 are arranged opposite to each other, and the edges of the antifriction pads 103 are spaced from each other.

The pushing block 27 comprises a pushing sliding block 271 and a pushing arm 272, the pushing sliding block 271 is movably embedded in the sliding inner tube 102, the pushing sliding block 271 is sleeved on the push-pull screw 22, a strip-shaped pushing yielding port is further formed in the guide outer cylinder 101 along the length direction of the guide outer cylinder, the pushing yielding port corresponds to the sliding yielding port and is communicated with the sliding yielding port, the pushing arm 272 is obliquely arranged, the upper end of the pushing arm 272 is fixed with the pushing sliding block 271, the lower portion of the pushing arm 272 sequentially extends out from the sliding yielding port and the pushing yielding port, and the lower end of the pushing arm 272 faces the leg support body 3 and is hinged with the leg support overturning connecting rod 29.

The screw driving seat 21 is fixed on the outer wall of the guide outer cylinder 101, a power element 26 is further arranged on the screw driving seat 21, the power element 26 can be a motor, a worm wheel is fixedly sleeved on the screw rotating seat, and an output shaft of the motor is in transmission connection with the worm wheel. Thus, when the motor output shaft rotates, the push-pull screw 22 is driven to rotate; while the push-pull screw 22 rotates, the push-pull screw 22 stretches back and forth along the rotating nut 24 due to the threaded fit with the rotating nut 24, so that the sliding inner tube 102 is driven to slide back and forth in the guide outer tube 101, and the antifriction convex strips 103b can reduce the sliding contact area and thus the friction force; the leg rest body 3 mounted at the front end of the sliding inner tube 102 is driven to expand and contract back and forth so as to move the leg rest in/out of the seat cushion 50. The sliding inner tube 102 is internally provided with the push-pull screw 22 and the like, so that the sliding inner tube is concise and attractive in appearance, and is convenient to assemble and combine due to the modularized design.

The leg support overturning connecting rod 29 is located below the hinging point of the leg support body 3 and the leg support mounting seat, when the push-pull screw rod 22 drives the sliding inner pipe 102 to slide forwards and backwards, the pushing block 27 advances and retreats along with the sliding inner pipe, and the push-pull screw rod 22 in the process keeps rotating and drives the pushing block 27 to slide forwards and backwards relative to the push-pull screw rod 22, so that the leg support body 3 is pushed to overturn.

Thereby, the leg rest body 3 is turned over and spread to a use state in one step while the leg rest body 3 is driven to move forward out of the seat cushion 50; while the leg rest body 3 is driven to move backwards into the seat cushion 50, the leg rest body 3 is turned over and erected to be in a standby state in one step; the efficiency is improved and the time is saved by adopting a simple structure.

Compared with the prior art, the invention has the beneficial effects that: the synergy of the seat backrest, the seat basin and the seat cushion during rotation adjustment can be improved; the turnover resistance can be adjusted independently according to different customer demands, the turnover resistance has a self-recovery function after adjustment, and the leg support can be turned over when being pulled back and forth, so that one-step unfolding or storage can be performed, a complex connecting rod mechanism is avoided, the structure is greatly simplified, and the cost is reduced.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An integrated seat, characterized in that: the device comprises a supporting base (90), a seat cushion (50) and a backrest, wherein the seat cushion (50) is positioned above the supporting base (90), the rear part of the seat cushion (50) is hinged with the supporting base (90), the lower part of the backrest is hinged with the supporting base (90), and a synchronous linkage mechanism is connected between the seat cushion (50) and the backrest and is used for correlating the rotation power of the seat cushion (50) and the rotation power of the backrest so that the seat cushion and the backrest can rotate relatively along with each other;

The seat cushion (50) is provided with a leg support assembly, the leg support assembly comprises a leg support linear drawing assembly and a leg support body (3), the leg support linear drawing assembly is arranged on the seat cushion (50), the leg support linear drawing assembly is arranged along the front-back direction of the seat cushion (50), and the leg support body (3) is arranged at the front part of the leg support linear drawing assembly;

The leg support linear drawing assembly comprises a drawing fixing part and a drawing sliding part which are assembled in a sliding manner along the front-back direction of the seat cushion (50), wherein the drawing fixing part is arranged on the seat cushion (50), the front part of the drawing sliding part is hinged with the leg support body (3), and the drawing sliding part drives the leg support body (3) to advance and retreat along the drawing fixing part;

The drawing sliding part is provided with a secondary propelling mechanism which is connected with the leg support body (3), and the secondary propelling mechanism pushes the leg support body (3) to rotate;

The drawing sliding part comprises a leg support sliding seat and a push-pull screw rod (22), wherein the leg support sliding seat is in sliding assembly with the drawing fixing part, the push-pull screw rod (22) is axially and fixedly connected with the leg support sliding seat, the push-pull screw rod (22) is in annular rotation connection with the leg support sliding seat, the push-pull screw rod (22) is connected with a screw rod rotating mechanism, and the screw rod rotating mechanism drives the push-pull screw rod (22) to rotate;

The device also comprises a turning nut (24), wherein the turning nut (24) and the seat cushion (50) are kept relatively fixed, and the turning nut (24) is sleeved on the push-pull screw rod (22) in a threaded manner;

The secondary propelling mechanism comprises a propelling block (27), the propelling block (27) is assembled with the leg support sliding seat in a sliding way, the propelling block (27) is in threaded sleeve joint with the push-pull screw rod (22), a leg support overturning connecting rod (29) is connected between the propelling block (27) and the leg support body (3), and two ends of the leg support overturning connecting rod (29) are respectively hinged with the propelling block (27) and the leg support body (3);

The screw rotating mechanism comprises a screw driving seat (21) and a screw rotating seat (23), the screw driving seat (21) and the seat cushion (50) are kept relatively fixed, the screw rotating seat (23) is rotationally assembled on the screw driving seat (21), a screw through hole is penetrated through the screw rotating seat (23), a push-pull screw (22) is penetrated in the screw through hole, the push-pull screw (22) is axially matched with the screw rotating seat (23) in a sliding manner, and the push-pull screw (22) and the screw rotating seat (23) are annularly fixed;

The leg support sliding seat comprises a sliding inner tube (102), the push-pull screw rod (22) is positioned in the sliding inner tube (102) and is parallel to the length direction of the sliding inner tube, sealing seats are fixed at two ends of the sliding inner tube (102), two ends of the push-pull screw rod (22) are respectively arranged on the corresponding sealing seats, the end part of the push-pull screw rod (22) is axially and fixedly connected with the corresponding sealing seats, and the end part of the push-pull screw rod (22) is in annular rotation connection with the corresponding sealing seats;

The screw rod rotating seat (23), the rotating nut (24) and the pushing block (27) are all positioned inside the sliding inner tube (102), the pushing block (27) is embedded in the sliding inner tube (102) in a sliding manner, and the pushing block (27) is positioned in front of the screw rod rotating seat (23) and the rotating nut (24);

The drawing fixing part comprises a guide outer cylinder (101), the guide outer cylinder (101) is fixed on the seat cushion (50), the guide outer cylinder (101) is arranged along the front-back direction of the seat cushion (50), and the sliding inner tube (102) is movably inserted into the guide outer cylinder (101);

the guide outer cylinder (101) is provided with a drive abdication hole in a penetrating mode, the sliding inner tube (102) is provided with a strip-shaped sliding abdication hole along the length direction of the guide outer cylinder, the drive abdication hole corresponds to the sliding abdication hole and is communicated with the sliding abdication hole, the screw driving seat (21) sequentially extends into the sliding inner tube (102) from the drive abdication hole and the sliding abdication hole, and the turning nut (24) is fixed on the screw driving seat (21).

2. The integrated seat according to claim 1, wherein: a damping adjustment mechanism is arranged on the supporting base (90) and acts with the backrest or the seat cushion (50) to play a role in adjusting rotation resistance;

the support base (90) is also provided with a turnover locking mechanism which acts with the backrest or the seat cushion (50) to lock the backrest or the seat cushion in place.

3. The integrated seat according to claim 2, wherein: the synchronous linkage mechanism comprises a seat-rest linkage swivel seat (67), the seat-rest linkage swivel seat (67) is hinged with the rear part of the support base (90), and the seat-rest linkage swivel seat (67) rotates on the support base (90) around a hinge point of the seat-rest linkage swivel seat;

The backrest is fixed on the backrest linkage swivel seat (67), and the seat cushion (50) is hinged with the backrest linkage swivel seat (67);

The seat cushion linkage swivel seat (67) is connected with a seat cushion lifting connecting rod (66), one end of the seat cushion lifting connecting rod (66) is hinged with the seat cushion linkage swivel seat (67), and the other end of the seat cushion lifting connecting rod (66) is hinged with the seat cushion (50);

The seat backrest linkage swivel mount (67) comprises a linkage propulsion seat (671) and a linkage propulsion arm (672), the linkage propulsion seat (671) is hinged with the support base (90), one end of the linkage propulsion arm (672) is connected with the linkage propulsion seat (671), the other end of the linkage propulsion arm (672) extends forwards, and the front end of the linkage propulsion arm (672) is hinged with the seat cushion lifting connecting rod (66).

4. An integrated seat as claimed in claim 3, wherein: the damping adjustment mechanism comprises an elastic piece (51) and a pre-tightening adjustment assembly (52), wherein the pre-tightening adjustment assembly (52) is fixed on the support base (90);

the elastic piece (51) is connected with the seat backrest linkage swivel seat (67) so as to provide rotating resistance for the seat backrest linkage swivel seat; the pre-tightening adjusting component (52) is connected with the elastic piece (51) so as to adjust the pre-tightening force of the elastic piece;

The pre-tightening adjusting assembly (52) comprises an elastic piece restraining seat (521), the elastic piece restraining seat (521) is fixed on the supporting base (90), a strip-shaped restraining hole is formed in the elastic piece restraining seat (521), the length direction of the strip-shaped restraining hole is arranged along the deformation direction of the elastic piece (51), the elastic piece (51) is deformed by moving a clamping head along the strip-shaped restraining hole, and an elastic piece pushing mechanism is further arranged on the elastic piece restraining seat (521) and acts on the elastic piece (51) to cause the elastic piece to deform along the direction of the strip-shaped restraining hole;

The elastic piece pushing mechanism comprises a pushing cam (522), wherein the pushing cam (522) is arranged on the elastic piece restraining seat (521) through a cam shaft, and the pushing cam (522) is arranged corresponding to the elastic piece (51) and is contacted with the elastic piece;

a driven gear (523) is fixedly sleeved on the cam shaft, a driving gear (524) is mounted on the supporting base (90), the driving gear (524) is meshed with the driven gear (523), the driving gear (524) is mounted on the supporting base (90) through a gear shaft, and a handle (525) is further fixed on the gear shaft;

The turnover locking mechanism comprises a controllable gas spring (42) and a locking support (41), wherein the locking support (41) is fixed on the supporting base (90);

One end of the controllable gas spring (42) is hinged with the supporting base (90), and the other end of the controllable gas spring (42) is hinged with the seat-leaning linkage swivel seat (67).

5. The integrated seat of claim 4, wherein: a lifting constraint track is further arranged on the supporting base (90), and a hinge point of the seat cushion lifting connecting rod (66) and the seat cushion linkage swivel seat (67) is limited by the lifting constraint track and moves according to the set constraint track;

The seat cushion lifting device is characterized in that a clamping groove is formed in the supporting base (90) and is arranged along the lifting constraint track, the seat cushion lifting connecting rod (66) is hinged with the seat cushion linkage swivel base (67) through a track constraint shaft (65), and one end of the track constraint shaft (65) is inserted into the clamping groove and moves along the lifting constraint track.

6. The integrated seat of claim 1,2,3, 4 or 5, wherein: the outer wall of the push-pull screw rod (22) is axially provided with a sliding concave part which cuts off the screw teeth of the push-pull screw rod (22), a sliding convex part is fixed on the hole wall of the screw rod perforation, and the sliding convex part corresponds to the sliding concave part and is matched with the sliding concave part;

The sliding protruding part is axially matched with the sliding concave part in a sliding way, and the sliding protruding part is fixed with the sliding concave part in the circumferential direction;

An antifriction pad (103) is arranged between the guide outer cylinder (101) and the sliding inner tube (102), the outer wall of the antifriction pad (103) is abutted against the inner wall of the guide outer cylinder (101), a positioning convex block (103 a) is arranged on the outer wall of the antifriction pad (103), an antifriction pad clamping hole corresponding to the positioning convex block (103 a) and penetrating through the cylinder wall of the guide outer cylinder (101), a plurality of antifriction convex strips (103 b) are arranged on the inner wall of the antifriction pad (103), and the antifriction convex strips (103 b) are abutted against the inner wall of the sliding inner tube (102);

The guiding outer cylinder (101) and the sliding inner tube (102) are rectangular tubes, the antifriction pads (103) are in a C shape, two antifriction pads (103) are arranged opposite to each other, and the edges of the two antifriction pads (103) are spaced from each other.

7. The integrated seat of claim 6, wherein: the pushing block (27) comprises a pushing slide block (271) and a pushing arm (272), the pushing slide block (271) is movably embedded in the sliding inner tube (102), the pushing slide block (271) is sleeved on the pushing and pulling screw (22) in a threaded mode, a bar-shaped pushing yielding port is further formed in the guide outer cylinder (101) along the length direction of the guide outer cylinder, the pushing yielding port corresponds to the sliding yielding port and is communicated with the sliding yielding port, the pushing arm (272) is obliquely arranged, the upper end of the pushing arm (272) is fixed with the pushing slide block (271), the lower portion of the pushing arm (272) sequentially extends out from the sliding yielding port and the pushing yielding port, and the lower end of the pushing arm (272) faces the leg support body (3) and is hinged to the leg support overturning connecting rod (29).

8. The integrated seat according to claim 4 or 5, wherein: the supporting base (90) comprises a shell bottom (91), the edges of the shell bottom (91) are respectively turned upwards to form shell flanges (92), the inner walls of the two shell flanges (92) which are right and left opposite are respectively hinged with the seat cushion linkage swivel mount (67), and the seat cushion lifting connecting rods (66) are respectively connected with the seat cushion linkage swivel mount (67);

the elastic piece (51) is connected with one seat-rest linkage swivel seat (67), and the pre-tightening adjusting component (52) is positioned in front of the corresponding seat-rest linkage swivel seat (67); the controllable gas spring (42) is hinged with the other seat-rest linkage swivel seat (67), and the locking support (41) is positioned in front of the corresponding seat-rest linkage swivel seat (67);

The two right and left opposite seat backrest linkage swivel bases (67) are connected through a lifting synchronizing rod (673).