CN210630897U

CN210630897U - Rotating structure of zero-gravity office chair

Info

Publication number: CN210630897U
Application number: CN201920872774.1U
Authority: CN
Inventors: 陈林
Original assignee: Xiamen Joya Technology Co ltd
Current assignee: Xiamen Joya Technology Co ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-05-29
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses a rotation structure of a zero-gravity office chair, which comprises a chair seat, foot rests, foot supports and a connecting component; the chair seat is arranged on the foot rest; the foot support is movably matched on the foot rest through the connecting component and is movably matched at the front end of the chair seat; the connecting assembly comprises a U-shaped connecting rod, an elastic assembly and a fixed connecting rod; one end of the U-shaped connecting rod is fixedly arranged on the foot rest, and the other end of the U-shaped connecting rod is pivoted with the foot rest; the fixed connecting rod is fixedly arranged on the foot support; one end of the elastic component is matched on the U-shaped connecting rod, and the other end of the elastic component is matched on the fixed connecting rod; the utility model discloses a foot holds in palm and passes through coupling assembling clearance fit on the foot rest, U type connecting rod, elastic component and the fixed link simple structure in the coupling assembling to, elastic component's elasticity can cooperate the foot to hold in the palm to rotate to receive to close or rotate to expand, makes the user of service need not last to operate energetically, reaches laborsaving effect.

Description

Rotating structure of zero-gravity office chair

Technical Field

The utility model relates to a technical field of seat especially relates to a rotating-structure of zero gravity official working seat.

Background

Zero gravity office chair can build the weightlessness of outer space and feel, lets the user of service in a state of relaxing completely for the pressure of health obtains releasing, and effectual tired of alleviating, for ordinary seat, zero gravity office chair is equipped with people's favor.

In the existing chair, a foot rest for supporting legs and feet is usually matched at the front end of a chair seat, and when the chair is laid on, the foot rest can be rotated around the chair seat to be unfolded so as to support the legs and the feet; when sitting on the chair, the foot support can rotate around the chair seat and be folded below the chair seat.

In the actual use process, the foot supports are generally matched on the seat base in a rotating mode through a rotating structure, the existing rotating structure generally comprises a first connecting rod connected with the foot supports, a second connecting rod connected with the seat, a limiting device used for connecting the first connecting rod and the second connecting rod and an elastic device, the limiting device can control the rotating angle of the foot supports, the elastic device is used for providing supporting force for the foot supports after rotating and unfolding, and the rotating structure is complex in structure; in addition, when the user expands or closes the foot support, the user needs to overcome the resistance of the elastic device in the whole process of expanding or closing, and can rotate the foot support by applying a large force to the foot support.

In view of this, the present inventors have made extensive conceptions for various defects and inconveniences caused by the incomplete improvement of the design of the rotational structure of the seat, and have actively studied, improved and tried to develop and design the present invention.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rotating-structure of zero gravity office chair of simple structure, easy operation.

In order to achieve the above purpose, the solution of the present invention is:

a rotating structure of a zero-gravity office chair comprises a chair seat, foot rests, foot supports and a connecting assembly; the chair seat is arranged on the foot rest; the foot support is movably matched on the foot rest through the connecting component and is movably matched at the front end of the chair seat; the connecting assembly comprises a U-shaped connecting rod, an elastic assembly and a fixed connecting rod; one end of the U-shaped connecting rod is fixedly arranged on the foot rest, the other end of the U-shaped connecting rod is pivoted with the foot supports, and the foot supports pivoted on the U-shaped connecting rod are rotatably folded below the chair seat or rotatably unfolded and matched at the front end of the chair seat; the fixed connecting rod is fixedly arranged on the foot supports, and the fixed connecting rod is positioned above the pivot shaft between the U-shaped connecting rod and the foot supports after the foot supports are rotatably folded; one end of the elastic component is matched on the U-shaped connecting rod, and the other end of the elastic component is matched on the fixed connecting rod.

The elastic component comprises a first supporting rod provided with a first limiting piece, a spring and a second supporting rod provided with a second limiting piece; one end of the first support rod, which is opposite to one end of the second support rod, is movably connected, the other end of the first support rod is matched on the U-shaped connecting rod, and the other end of the second support rod is matched on the fixed connecting rod; the spring is sleeved on the first supporting rod, one end of the spring abuts against the first limiting piece, and the other end of the spring abuts against the second limiting piece.

The first limiting piece comprises a nut and a washer; the first supporting rod is provided with an external thread; the nut is in threaded connection with the external thread on the first support rod; the gasket is sleeved on the first support rod and positioned on one side of the nut facing the spring; one end of the spring is abutted against the washer.

The second supporting piece comprises a sleeve and a U-shaped bracket; the second limiting piece is arranged on the sleeve; one end of the sleeve is movably connected with the first supporting rod, and the other end of the sleeve is connected with the U-shaped bracket; the other end of the U-shaped bracket is matched on the fixed connecting rod.

The seat further comprises a backrest, a buckle assembly, a connecting block and a reset tension spring; the middle part of the chair seat is pivoted on the foot rest, and the chair seat is movably clamped with the foot rest through a clamping component; the lower part of the backrest is pivoted on the foot rest and is movably matched with the rear end of the chair seat; the middle part of the connecting block is pivoted on the foot rest, one end of the connecting block is in linkage fit with the chair seat, and the other end of the connecting block is in linkage fit with the backrest; two ends of the reset tension spring are respectively connected to the seat and the foot rest and used for linking the seat pivoted on the foot rest to rotate and reset.

The chair seat comprises a chair seat frame, the middle part of the chair seat frame is provided with a connecting rod, a first linkage rod and a second linkage rod which are respectively positioned at the two sides of the connecting rod; the chair seat frame is pivoted on the foot rest through a connecting rod, is connected with the reset tension spring through a first linkage rod, and is in linkage fit with the connecting block through a second linkage rod.

The backrest comprises a backrest frame, and the lower part of the backrest frame is provided with an arc-shaped section, a connecting plate and a third linkage rod, wherein the arc-shaped section, the connecting plate and the third linkage rod extend into the seat shell; the connecting plate and the third linkage rod are arranged on the arc-shaped section; the backrest frame is pivoted on the foot rest through a connecting plate and is in linkage fit with the connecting block through a third linkage rod.

The connecting block is S-shaped, arc-shaped holes are respectively formed in two ends of the connecting block, and the second linkage rod is movably matched in the arc-shaped hole close to the chair seat; the third linkage rod is movably matched in the arc-shaped hole close to the backrest.

The buckle assembly comprises a clamping block, a movable clamping jaw, a torsion spring and an adjusting pressure rod, wherein the clamping block is circumferentially provided with a plurality of clamping grooves; the clamping block is fixedly arranged on the connecting rod; the middle part of the movable clamping jaw is rotationally matched on the foot rest through a torsion spring, and one end of the movable clamping jaw is movably clamped with the clamping groove on the clamping block; the adjusting pressure rod is movably arranged on the foot rest and is in linkage fit with the other end of the movable clamping jaw through the inclined guide surface.

The chair seat is characterized by further comprising a chair seat shell with a movable groove, the chair seat frame is installed in the chair seat shell, and the foot rest penetrates through the movable groove and extends into the chair seat shell to be pivoted with the chair seat frame.

The backrest also comprises a backrest shell, and the backrest shell is detachably arranged on the backrest frame.

The backrest also comprises a backrest cushion, and the backrest cushion is matched on the backrest shell.

The seat further comprises armrests which are mounted on the backrest frame.

After the scheme is adopted, the foot support of the utility model is movably matched on the foot rest through the connecting component, when the foot support needs to be rotated and folded, the fixed connecting rod rotates along with the foot support by overcoming the elasticity of the elastic component clockwise, and at the moment, the elasticity of the elastic component hinders the rotation and folding of the foot support; when the fixed connecting rod rotates to the position above the pivoting shaft between the U-shaped connecting rod and the foot supports, the foot supports can be loosened, at the moment, the elastic force of the elastic component can push the fixed connecting rod to continue rotating, so that the foot supports also continue rotating and folding along with the fixed connecting rod until the foot supports rotate and fold below the chair seat, and the foot supports cannot continue rotating under the limitation of the chair seat; after the foot support is rotatably folded, the elastic force of the elastic component still continuously pushes the fixed connecting rod, so that the foot support is firmly folded below the chair seat.

When the foot rest needs to be rotated and unfolded for use, the foot rest is rotated anticlockwise by overcoming the elasticity of the elastic component, the fixed connecting rod rotates along with the foot rest, and the elasticity of the elastic component hinders the rotation and unfolding of the foot rest; when the fixed connecting rod rotates to the position below the pivoting shaft between the U-shaped connecting rod and the foot supports, the foot supports can be loosened, at the moment, the elastic force of the elastic component can push the fixed connecting rod to rotate continuously, so that the foot supports also rotate and expand along with the fixed connecting rod until the foot supports rotate, expand and are matched with the front end of the chair seat; the foot support is matched with the front end of the chair seat in a rotating and unfolding way, and the elastic force of the elastic component still continuously pushes the fixed connecting rod so as to support the foot support.

The utility model discloses U type connecting rod, elastic component and fixed connecting rod among the coupling assembling simple structure to, elastic component's elasticity can cooperate the foot to hold in the palm to rotate to receive to close or rotate and expand, makes the user of service need not last to operate energetically, reaches laborsaving effect.

In addition, the utility model is provided with the buckle component, the connecting block and the reset tension spring, when a user needs to lie on the seat, the clamping between the seat and the foot rest is firstly released through the buckle component, and then the user moves the gravity center to the direction of the backrest; along with the movement of the gravity center of a user, one end of the seat close to the backrest is pressed, the seat can rotate anticlockwise around the foot rest under the action of overcoming the tension of the reset tension spring and drives the connecting block to rotate clockwise on the foot rest, and the connecting block drives the backrest to rotate anticlockwise on the foot rest, so that the angle between the backrest and the seat is adjusted to be suitable for the relaxed body shape of the user; after the angle adjustment between the backrest and the seat is completed, the clamping connection between the seat and the foot rest is recovered through the clamping component, so that the seat and the backrest are positioned on the foot rest for a user to normally lie and lean.

When a user lies and leans back and needs to restore the chair, the clamping connection between the chair seat and the foot rest is released through the clamping component, and then the user moves the gravity center to the front end of the chair seat; along with the removal of user's focus, the one end that the seat support is close to the back loses the pressurized, and the seat support can rotate clockwise round the foot rest under the pulling force effect of extension spring that resets to drive the connecting block and rotate anticlockwise on the foot rest, the connecting block drives the back and rotates clockwise on the foot rest, pastes the rear end of leaning on the seat support and the reconversion until the back, and the joint between seat support and the foot rest is resumeed to the rethread buckle subassembly, in order to supply user of service to normally take with seat support and back location on the foot rest.

The utility model discloses a seat is when the angle of adjusting the back, after the card that removes buckle subassembly acts on admittedly, with the help of user's self gravity or the pulling force of extension spring that resets, can be according to the self required angle of adjusting between back and the seat support to be fit for the body shape that user of service relaxs, have convenient operation, laborsaving advantage.

Drawings

Fig. 1 is an exploded view of a preferred embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic view of the structure of the foot support after being folded according to the preferred embodiment of the present invention;

FIG. 4 is a schematic view of the structure of the foot rest of the preferred embodiment of the present invention during the rotation process;

FIG. 5 is a schematic view of the foot rest of the preferred embodiment of the present invention after being rotated and unfolded;

FIG. 6 is a schematic structural view of the backrest of the preferred embodiment of the present invention before it is laid down;

FIG. 7 is an enlarged view of a portion of FIG. 6 at A;

fig. 8 is a schematic structural view of the backrest of the preferred embodiment of the present invention after it is laid down.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

As shown in fig. 1 to 8, a preferred embodiment of a rotation structure of a zero gravity office chair according to the present invention comprises a chair seat 1, a foot rest 2, a foot rest 3, and a connecting assembly 4; the chair seat 1 is arranged on the foot rest 2; the foot rest 3 is movably matched on the foot rest 2 through a connecting component 4 and is movably matched at the front end of the chair seat 1; the connecting assembly 4 comprises a U-shaped connecting rod 41, an elastic assembly 42 and a fixed connecting rod 43; one end of the U-shaped connecting rod 41 is fixedly arranged on the foot rest 2, the other end of the U-shaped connecting rod is pivoted with the foot support 3, and the foot support 3 pivoted on the U-shaped connecting rod 41 is rotatably folded below the chair seat 1 or rotatably unfolded and matched at the front end of the chair seat 1; the fixed connecting rod 43 is fixedly arranged on the foot rest 3, and the fixed connecting rod 43 is positioned above the pivot shaft between the U-shaped connecting rod 41 and the foot rest 3 after the foot rest 3 is rotatably folded; the elastic member 42 has one end fitted to the U-shaped link 41 and the other end fitted to the fixed link 43.

When the foot rest 3 needs to be folded by rotation, the fixed connecting rod 43 rotates along with the foot rest 3 by overcoming the elasticity of the elastic component 42 to rotate the foot rest 3 clockwise, and at the moment, the elasticity of the elastic component 42 hinders the rotation folding of the foot rest 3; when the fixed connecting rod 43 rotates to the position above the pivot shaft between the U-shaped connecting rod 41 and the foot rest 3, the foot rest 3 can be released, and at this time, the elastic force of the elastic component 42 can push the fixed connecting rod 43 to continue rotating, so that the foot rest 3 also continues to rotate and be folded along with the fixed connecting rod 43 until the foot rest 3 rotates and is folded below the seat 1, and the foot rest 3 cannot continue to rotate under the limitation of the seat 1; after the foot rest 3 is rotated to be folded, the elastic force of the elastic component 42 still continuously pushes the fixed connecting rod 43, so that the foot rest 3 is firmly folded under the seat 1.

When the foot rest 3 needs to be rotated and unfolded for use, the foot rest 3 is rotated anticlockwise by overcoming the elasticity of the elastic component 42, the fixed connecting rod 43 rotates along with the foot rest 3, and the elasticity of the elastic component 42 hinders the rotation and unfolding of the foot rest 3; when the fixed connecting rod 43 rotates to a position below the pivot shaft between the U-shaped connecting rod 41 and the foot support 3, the foot support 3 can be loosened, at the moment, the elastic force of the elastic component 42 can push the fixed connecting rod 43 to continue rotating, so that the foot support 3 also continues to rotate and unfold along with the fixed connecting rod 43 until the foot support 3 rotates, unfolds and fits at the front end of the seat 1; after the foot rest 3 is rotatably and unfolded to fit the front end of the seat 1, the elastic force of the elastic component 42 still continuously pushes the fixed link 43 to support the foot rest 3.

The utility model discloses a foot holds in palm 3 through 4 clearance fits of coupling assembling on foot rest 2, U type connecting rod 41, elastic component 42 and fixed connecting rod 43 simple structure in the coupling assembling 4 to, elastic component 42's elasticity can cooperate the foot to hold in the palm 3 rotations to be closed or rotate and expand, makes the user of service need not last to operate energetically, reaches laborsaving effect.

As an alternative embodiment, the elastic component 42 includes a first support rod 421 provided with a first stopper 4211, a spring 422, and a second support rod 423 provided with a second stopper 4231; the opposite ends of the first support rod 421 and the second support rod 423 are movably connected, the other end of the first support rod 421 is matched on the U-shaped connecting rod 41, and the other end of the second support rod 423 is matched on the fixed connecting rod 43; the spring 422 is sleeved on the first support rod 421, one end of the spring 422 abuts against the first limit piece 4211, and the other end abuts against the second limit piece 4231. The utility model discloses an elastic component 42 pushes up respectively under the effect of spring 422 elasticity on first locating part 4211 of first bracing piece 421 and second locating part 4231 of second bracing piece 423 to push up respectively first bracing piece 421 and second bracing piece 423 on U type connecting rod 41 and fixed connecting rod 43.

In an alternative embodiment, the first position-limiting member 4211 includes a nut 4213 and a washer 4214; the first support rod 421 is provided with an external thread 4212; the nut 4213 is screwed with the external thread 4212 on the first support rod 421; a washer 4214 is sleeved on the first support rod 421 and is positioned on one side of the nut 4213 facing the spring 422; one end of the spring 422 bears against the washer 4214. The utility model discloses a lean on spring 422 top on packing ring 4214 to utilize nut 4213 to carry out spacing fixed to packing ring 4214, thereby make first locating part 4211 more stable to spring 422's support.

As an alternative embodiment, the second support member comprises a sleeve 4232 and a U-shaped bracket 4233; the second limit piece 4231 is arranged on the sleeve 4232; one end of the sleeve 4232 is movably connected with the first support rod 421, and the other end is connected with the U-shaped bracket 4233; the other end of the U-shaped bracket 4233 is fitted on the fixed link 43. In use, the U-shaped support 4233 is pressed to link the sleeve 4232 to move on the first support rod 421 towards the spring 422, and the sleeve 4232 compresses the spring 422 through the second limit stop 4231, so that the spring 422 contracts and gives way; alternatively, the spring 422 pushes the sleeve 4232 through the second stopper 4231, the sleeve 4232 moves on the first support rod 421 towards the fixed link 43, and the linking U-shaped bracket 4233 pushes on the fixed link 43; the folding or unfolding is matched with the rotation of the foot support 3 in the above mode. The utility model discloses in, form two strong points between U type support 4233 of cooperation on fixed connecting rod 43 and the fixed connecting rod 43 for cooperation between second support piece and the fixed connecting rod 43 is more stable.

The seat further comprises a backrest 5, a buckle assembly 6, a connecting block 7 and a reset tension spring 8; the middle part of the chair seat 1 is pivoted on the foot rest 2, and the chair seat 1 is movably clamped with the foot rest 2 through a buckle component 6; the lower part of the backrest 5 is pivoted on the foot rest 2 and is movably matched with the rear end of the chair seat 1; the middle part of the connecting block 7 is pivoted on the foot rest 2, one end of the connecting block 7 is in linkage fit with the chair seat 1, and the other end is in linkage fit with the backrest 5; two ends of the reset tension spring 8 are respectively connected to the chair seat 1 and the foot rest 2 and are used for linking the chair seat 1 pivoted on the foot rest 2 to rotate and reset.

When a user needs to lie on the seat, the clamping between the seat 1 and the foot rest 2 is firstly released through the clamping component 6, and then the user moves the gravity center to the direction of the backrest 5; along with the movement of the gravity center of a user, one end of the seat 1 close to the backrest 5 is pressed, the seat 1 can rotate anticlockwise around the foot rest 2 under the action of overcoming the tension of the reset tension spring 8 and drives the connecting block 7 to rotate clockwise on the foot rest 2, and the connecting block 7 drives the backrest 5 to rotate anticlockwise on the foot rest 2, so that the angle between the backrest 5 and the seat 1 is adjusted to be suitable for the relaxed body shape of the user; after the angle adjustment between the backrest 5 and the seat 1 is completed, the clamping between the seat 1 and the foot stool 2 is restored through the buckle assembly 6, so that the seat 1 and the backrest 5 are positioned on the foot stool 2 for a user to normally lie and lean.

When a user lies and leans back and needs to restore the chair, the clamping between the chair seat 1 and the foot stool 2 is released through the clamping component 6, and then the user moves the gravity center to the front end of the chair seat 1; along with the removal of user's focus, seat support 1 loses the pressurized near one end of back 5, seat support 1 is under the pulling force effect of extension spring 8 that resets, can rotate clockwise round foot rest 2, and drive connecting block 7 anticlockwise rotation on foot rest 2, connecting block 7 drives back 5 clockwise rotation on foot rest 2, paste until back 5 and lean on the rear end at seat support 1 and the reconversion, rethread buckle subassembly 6 resumes the joint between seat support 1 and the foot rest 2, with seat support 1 and back 5 location supply the user of service normally to take on foot rest 2.

The utility model discloses a seat is when adjusting the angle of back 5, after the card that removes buckle subassembly 6 acts on admittedly, with the help of the gravity of user of self or the pulling force of extension spring 8 that resets, can be according to the self required angle of adjusting between back 5 and the seat support 1 to be fit for the body shape that the user relaxes, have convenient operation, laborsaving advantage.

As an optional embodiment, the seat 1 includes a seat frame 11, a connecting rod 111 is disposed in the middle of the seat frame 11, and a first linking rod 112 and a second linking rod 113 are respectively disposed on two sides of the connecting rod 111; the seat frame 11 is pivoted on the foot rest 2 through a connecting rod 111, connected with the reset tension spring 8 through a first linkage rod 112, and in linkage fit with the connecting block 7 through a second linkage rod 113.

As an alternative embodiment, the backrest 5 includes a backrest frame 51, and the lower portion of the backrest frame 51 is provided with an arc-shaped segment 511 extending into the seat shell 12, a connecting plate 512, and a third linkage 513; the connecting plate 512 and the third linking rod 513 are both arranged on the arc-shaped section 511; the backrest frame 51 is pivoted on the foot rest 2 through a connecting plate 512 and is in linkage fit with the connecting block 7 through a third linkage 513.

As an optional implementation manner, the connecting block 7 is S-shaped, two ends of the connecting block 7 are respectively provided with an arc-shaped hole 71, and the second linking rod 113 is movably matched in the arc-shaped hole 71 close to the seat 1; the third linking rod 513 is movably matched in the arc-shaped hole 71 close to the backrest 5.

As an alternative embodiment, the above-mentioned buckle assembly 6 includes a buckle block 61 having a plurality of clamping grooves 611 on the circumference, a movable claw 62, a torsion spring 63, and an adjusting pressure lever 64 having an inclined guide surface 641; the clamping block 61 is fixedly arranged on the connecting rod 111; the middle part of the movable jaw 62 is rotationally matched on the foot rest 2 through a torsion spring 63, and one end of the movable jaw 62 is movably clamped with the clamping groove 611 on the clamping block 61; the adjusting press rod 64 is movably mounted on the foot stand 2 and is coupled with the other end of the movable claw 62 through the inclined guide surface 641.

When the clamping device is used, the adjusting pressure rod 64 is pushed towards the movable clamping jaw 62, the inclined guide surface 641 on the adjusting pressure rod 64 gradually presses down one end, matched with the inclined guide surface 641, of the movable clamping jaw 62 along with the movement of the adjusting pressure rod 64, so that the movable clamping jaw 62 rotates anticlockwise by overcoming the torsion of the torsion spring 63, one end, movably clamped with the clamping groove 611, of the movable clamping jaw 62 is separated from the clamping groove 611, and the clamping matching of the movable clamping jaw 62 and the clamping block 61 is relieved; on the contrary, by pulling out the adjusting pressure lever 64 in the opposite direction of the movable clamping jaw 62, the inclined guide surface 641 on the adjusting pressure lever 64 gradually moves to the end where the movable clamping jaw 62 is matched with the inclined guide surface 641 to move away along with the movement of the adjusting pressure lever 64, so that the movable clamping jaw 62 can rotate clockwise under the action of the torsion spring 63, the end where the movable clamping jaw 62 is movably clamped with the clamping groove 611 is rotated into the clamping groove 611 of the clamping block 61, and the clamping matching of the movable clamping jaw 62 and the clamping block 61 is recovered.

As an alternative embodiment, the seat 1 further includes a seat shell 12 having a movable slot 121, the seat frame 11 is installed in the seat shell 12, and the foot stool 2 extends into the seat shell 12 through the movable slot 121 and is pivotally connected to the seat frame 11. The utility model discloses a be equipped with frame casing to install seat frame 11 in seat support casing 12, have the guard action to seat frame 11.

As an alternative embodiment, the backrest 5 further includes a backrest shell 52, and the backrest shell 52 is detachably mounted on the backrest frame 51. When the backrest shell 52 is used, the backrest shell 52 directly supports the user, and the comfort level of the user lying on the seat is decisively influenced, the utility model discloses an install backrest shell 52 detachable on backrest frame 51, make things convenient for the research and development personnel to design improvement to backrest shell 52 alone.

As an alternative embodiment, the backrest 5 further includes a backrest cushion 53, and the backrest cushion 53 is fitted to the backrest shell 52. The utility model is provided with the backrest cushion 53, and the backrest cushion 53 is used for adjusting the contact point between the body of the user and the seat to obtain a more comfortable angle to reduce the fatigue.

As an alternative embodiment, the seat further comprises an armrest 9, and the armrest 9 is mounted on the backrest frame 51. When in use, a user can lean the hand against the handrail 9, so that the hand of the user can rest and relax.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.

Claims

1. A rotating structure of a zero-gravity office chair comprises a chair seat, foot rests, foot supports and a connecting assembly; the chair seat is arranged on the foot rest; the foot support is movably matched on the foot rest through the connecting component and is movably matched at the front end of the chair seat; the method is characterized in that: the connecting assembly comprises a U-shaped connecting rod, an elastic assembly and a fixed connecting rod; one end of the U-shaped connecting rod is fixedly arranged on the foot rest, the other end of the U-shaped connecting rod is pivoted with the foot supports, and the foot supports pivoted on the U-shaped connecting rod are rotatably folded below the chair seat or rotatably unfolded and matched at the front end of the chair seat; the fixed connecting rod is fixedly arranged on the foot supports, and the fixed connecting rod is positioned above the pivot shaft between the U-shaped connecting rod and the foot supports after the foot supports are rotatably folded; one end of the elastic component is matched on the U-shaped connecting rod, and the other end of the elastic component is matched on the fixed connecting rod.

2. The swivel structure of a zero-gravity office chair as claimed in claim 1, wherein: the elastic component comprises a first supporting rod provided with a first limiting piece, a spring and a second supporting rod provided with a second limiting piece; one end of the first support rod, which is opposite to one end of the second support rod, is movably connected, the other end of the first support rod is matched on the U-shaped connecting rod, and the other end of the second support rod is matched on the fixed connecting rod; the spring is sleeved on the first supporting rod, one end of the spring abuts against the first limiting piece, and the other end of the spring abuts against the second limiting piece.

3. The swivel structure of a zero-gravity office chair as claimed in claim 2, wherein: the first limiting piece comprises a nut and a washer; the first supporting rod is provided with an external thread; the nut is in threaded connection with the external thread on the first support rod; the gasket is sleeved on the first support rod and positioned on one side of the nut facing the spring; one end of the spring is abutted against the washer.

4. The swivel structure of a zero-gravity office chair as claimed in claim 2, wherein: the second supporting rod comprises a sleeve and a U-shaped bracket; the second limiting piece is arranged on the sleeve; one end of the sleeve is movably connected with the first supporting rod, and the other end of the sleeve is connected with the U-shaped bracket; the other end of the U-shaped bracket is matched on the fixed connecting rod.

5. The swivel structure of a zero-gravity office chair as claimed in claim 1, wherein: the seat further comprises a backrest, a buckle assembly, a connecting block and a reset tension spring; the middle part of the chair seat is pivoted on the foot rest, and the chair seat is movably clamped with the foot rest through a clamping component; the lower part of the backrest is pivoted on the foot rest and is movably matched with the rear end of the chair seat; the middle part of the connecting block is pivoted on the foot rest, one end of the connecting block is in linkage fit with the chair seat, and the other end of the connecting block is in linkage fit with the backrest; two ends of the reset tension spring are respectively connected to the seat and the foot rest and used for linking the seat pivoted on the foot rest to rotate and reset.

6. The swivel structure of a zero-gravity office chair according to claim 5, wherein: the chair seat comprises a chair seat frame, the middle part of the chair seat frame is provided with a connecting rod, a first linkage rod and a second linkage rod which are respectively positioned at the two sides of the connecting rod; the chair seat frame is pivoted on the foot rest through a connecting rod, is connected with the reset tension spring through a first linkage rod, and is in linkage fit with the connecting block through a second linkage rod.

7. The swivel structure of a zero-gravity office chair according to claim 6, wherein: the backrest comprises a backrest frame, and the lower part of the backrest frame is provided with an arc-shaped section, a connecting plate and a third linkage rod, wherein the arc-shaped section, the connecting plate and the third linkage rod extend into the seat shell; the connecting plate and the third linkage rod are arranged on the arc-shaped section; the backrest frame is pivoted on the foot rest through a connecting plate and is in linkage fit with the connecting block through a third linkage rod.

8. The swivel structure of a zero-gravity office chair according to claim 7, wherein: the connecting block is S-shaped, arc-shaped holes are respectively formed in two ends of the connecting block, and the second linkage rod is movably matched in the arc-shaped hole close to the chair seat; the third linkage rod is movably matched in the arc-shaped hole close to the backrest.

9. The swivel structure of a zero-gravity office chair according to claim 6, wherein: the buckle assembly comprises a clamping block, a movable clamping jaw, a torsion spring and an adjusting pressure rod, wherein the clamping block is circumferentially provided with a plurality of clamping grooves; the clamping block is fixedly arranged on the connecting rod; the middle part of the movable clamping jaw is rotationally matched on the foot rest through a torsion spring, and one end of the movable clamping jaw is movably clamped with the clamping groove on the clamping block; the adjusting pressure rod is movably arranged on the foot rest and is in linkage fit with the other end of the movable clamping jaw through the inclined guide surface.

10. The swivel structure of a zero-gravity office chair according to claim 7, wherein: the backrest also comprises a backrest shell, and the backrest shell is detachably arranged on the backrest frame.