CN220442264U - Adjustable chair - Google Patents

Abstract

The utility model provides an adjustable seat, which comprises a support assembly, a seat assembly, a first driving assembly, a backrest assembly and a second driving assembly; the support assembly comprises a bottom frame and a support frame which is connected to the bottom frame in a sliding manner along the up-down direction; the seat assembly is rotationally connected to the support frame around the first axis; the first driving component is arranged on the supporting frame and used for controlling the seat assembly to rotate around the first axis; the backrest assembly is rotationally connected to the seat assembly around a second axis; the second driving component is arranged on the seat assembly and connected with the backrest assembly, and the second driving component is used for controlling the backrest assembly to rotate around a second axis. The utility model provides an adjustable seat, which aims to solve the problems that the height of the seat in the prior art is certain, the use comfort is not high, the inclination angle of a backrest can be adjusted, and the included angle between buttocks and the back is increased when the back of a user leans backwards, so that the whole lower limbs of a human body slide to one side far away from the backrest.

Description

Adjustable chair

Technical Field

The utility model belongs to the technical field of seat adjustment, and particularly relates to an adjustable seat.

Background

The seat is a seat with a cushion and a backrest, and the seat is also provided with armrests. With the development and continuous improvement of material life, multifunctional chairs are becoming more and more common in daily life. No matter in work, study or leisure, the seat is needed, and the health of a human body can be influenced by keeping the same sitting posture for a long time, so that the requirements of people on the health care and the comfort of the seat are higher and higher.

The adjusting seat in the prior art can be generally adjusted into a working state and a leisure state, wherein the working state is used for working or learning, and the seat cushion and the backrest of the seat are in a right-angle state in the working state; the leisure state is used for resting, the cushion and the backrest of the seat are obtuse angles in the leisure state, so that the back, the buttocks and the thighs of a user can be conveniently supported, and the muscles of the whole body can be conveniently relaxed.

Because the existing adjustable seat only increases the included angle between the backrest and the seat cushion in a leisure state, the force application points of buttocks and thighs cannot be changed no matter the user works or rests, and the buttocks and the thighs can be tired after long-term use. In addition, in the leisure state, because the inclination angle of the backrest is increased, when the back of the user leans backwards, the included angle between the buttocks and the back is increased, so that the whole lower limb of the human body slides to one side far away from the backrest, and the comfort degree is affected. And parameters such as height and weight of different users are different, and if the height of the seat is fixed, the comfort level of the users when the users use the seat is affected.

Disclosure of Invention

The utility model aims to provide an adjustable seat, which aims to solve the problems that the height of the seat in the prior art is certain, the use comfort is not high, the inclination angle of a backrest can be adjusted, and when the back of a user leans backwards, the included angle between the buttocks and the back is increased, and the whole lower limbs of a human body slide to one side far away from the backrest.

In order to achieve the above purpose, the utility model adopts the following technical scheme: there is provided an adjustable seat comprising:

the support assembly comprises a bottom frame and a support frame which is connected to the bottom frame in a sliding manner along the up-down direction, and the support frame can be fixed at a designated height;

the seat assembly is rotationally connected with the support frame around a first axis;

the first driving assembly is arranged on the supporting frame and connected with the seat assembly, and is used for controlling the seat assembly to rotate around the first axis;

a backrest assembly rotatably coupled to the seat assembly about a second axis, the second axis being parallel to the first axis; and

the second driving assembly is arranged on the seat assembly and connected with the backrest assembly, and the second driving assembly is used for controlling the backrest assembly to rotate around the second axis.

In one possible implementation, the first driving assembly includes:

the first fixing seat is arranged on the support frame;

a first mount mounted to the seat assembly; and

the first driver can stretch out and draw back along a first path, the first path is parallel to the upper and lower directions, the fixed end of the first driver is rotationally connected with the first fixing seat, and the stretch end is rotationally connected with the first mounting seat.

In one possible implementation, the second driving assembly includes:

the second fixing seat is arranged on the seat assembly;

the second mounting seat is mounted on the backrest component; and

the second driver can stretch out and draw back along a second path, the second path is perpendicular to the second axis, the fixed end of the second driver is rotationally connected with the second fixing seat, and the stretch end is rotationally connected with the second mounting seat.

In one possible implementation, the adjustable seat further includes a leg rest assembly connected to the support bracket, the leg rest assembly comprising:

the fixing piece is connected with the supporting frame and is positioned below the seat assembly;

a slider slidably coupled to the fixed member along a third path, the third path being perpendicular to the first axis; and

and the leg support is connected with one end of the sliding piece far away from the fixing piece.

In one possible implementation, the leg rest includes:

the rotating shaft is connected to one end, far away from the fixed piece, of the sliding piece, and the axis of the rotating shaft is parallel to the first axis;

the shaft sleeve is rotationally sleeved outside the rotating shaft; and

the leg plate is connected to the shaft sleeve, the leg plate rotates to a storage state below the rotating shaft and a support state capable of overturning upwards, the leg plate is parallel to the sliding piece when in the storage state, and an included angle between the leg plate and the sliding piece is 90-140 degrees when in the support state.

In one possible implementation, the support frame includes:

the two connecting pieces are respectively connected to the underframe in a sliding way along the up-down direction, and the seat assembly is rotationally connected to the two connecting pieces;

the two ends of the mounting piece are respectively connected with the two connecting pieces, and the first driving assembly is arranged on the mounting piece; and

the two locking parts are arranged on the underframe, and the locking parts are used for fixing the connecting parts on the underframe.

In one possible implementation, the chassis includes:

two supports spaced along a fourth path, the fourth path being parallel to the first axis;

a reinforcement member disposed along the fourth path and connected to the two support members, respectively; and

the support comprises two support legs, wherein the support legs are arranged in one-to-one correspondence with the support members, the support legs are internally provided with accommodating grooves along the vertical direction, each connecting piece is slidably inserted into one accommodating groove, the locking piece is arranged on the support legs, and one end of the locking piece is inserted into one accommodating groove.

In one possible implementation, the backrest assembly includes:

a connecting shaft rotatably connected to the seat assembly, an axis of the connecting shaft forming the second axis;

the upper back support is connected with the connecting shaft and is positioned above the connecting shaft;

the backrest mechanism is connected with the upper backrest bracket and is used for providing support for the back; and

the lower back support is connected to the connecting shaft and located below the connecting shaft, and the second driving assembly is connected to the lower back support.

In one possible implementation, the backrest assembly further includes a headrest mechanism detachably connected to the backrest mechanism, the backrest mechanism comprising:

the backboard is connected with the upper back support; and

the connecting seat is arranged at the upper part of the backboard, and a connecting groove is formed in the connecting seat;

the headrest mechanism includes:

the plug connector is inserted into the connecting groove; and

and the pillow pad is connected to the top end of the plug connector and is used for supporting the head.

In one possible implementation, the seat assembly includes:

the two seat support frames are arranged at intervals along the direction perpendicular to the first axis, one end of each seat support frame is rotatably connected with the corresponding supporting frame, and the other end of each seat support frame is rotatably connected with the corresponding backrest component;

a seat plate connected to the two seat brackets;

the two ends of the first reinforcing piece are respectively connected with the two seat support frames, and the first driving component is connected with the first reinforcing piece; and

and the two ends of the second reinforcing piece are respectively connected with the two seat support brackets, and the second driving assembly is connected with the second reinforcing piece.

The adjustable seat provided by the utility model has the beneficial effects that: compared with the prior art, the adjustable seat can respectively adjust the angles of the seat assembly and the backrest assembly, the seat assembly is adjusted to rotate around the first axis through the first driving assembly, and the backrest assembly is adjusted to rotate around the second axis through the second driving assembly, so that the adjustable seat is switched between a working state and a leisure state. The first driving component is used for enabling the seat assembly to form an included angle with the horizontal plane, and the second driving component is used for increasing the included angle between the backrest assembly and the horizontal plane, so that the adjustable seat is in a leisure state. At this time, the included angle between the backrest component and the horizontal plane is increased, and at the same time, one side of the seat component, which is close to the backrest component, is inclined downwards to form an included angle with the horizontal plane. The human body lies on adjustable seat, and back subassembly laminating, buttock and thigh are laminated with the seat support subassembly, because the seat support subassembly is close to the one side downward sloping of back subassembly, make the buttock be less than the thigh, avoided leading to thigh and buttock to keeping away from the gliding problem in one side between the back because of the back's back, guaranteed human comfort level under the leisure state. The height of the supporting frame can be adjusted according to different heights and weights of different users, so that the adjustable chair is suitable for parameters of human bodies of the users, and the comfort level of the adjustable chair is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an adjustable seat according to an embodiment of the present utility model;

FIG. 2 is a bottom view of an adjustable seat according to an embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is a schematic view of an internal structure of an adjustable seat according to an embodiment of the present utility model;

FIG. 5 is a side view of an operational state of an adjustable seat provided by an embodiment of the present utility model;

FIG. 6 is a side view of an adjustable seat according to an embodiment of the present utility model in a recreational state;

fig. 7 is a schematic perspective view of a locking member according to an embodiment of the present utility model.

In the figure:

1. a support assembly; 101. a chassis; 1011. a support; 1012. a reinforcement; 1013. a support leg; 102. a connecting piece; 1021. a limiting hole; 103. a locking member; 1031. a limit column; 1032. a knob; 104. a mounting member;

2. a seat assembly; 201. a seat support; 202. a first reinforcement; 203. a second reinforcement; 204. a seat plate;

3. a backrest assembly; 301. an upper back support; 302. a connecting shaft; 303. a lower back support; 304. a backrest mechanism; 3041. a back plate; 3042. a connecting seat; 305. a headrest mechanism; 3051. a pillow; 3052. a plug-in component;

4. a leg rest assembly; 401. a fixing member; 402. a slider; 403. leg support; 4031. a rotating shaft; 4032. leg plates; 4033. a shaft sleeve;

5. a second drive assembly; 501. a second driver; 502. the second fixing seat; 503. a second mounting base;

6. a first drive assembly; 601. a first driver; 602. a first mount; 603. the first fixing seat.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order. Unless otherwise indicated, the terms of orientation or position such as "vertical," "clockwise," "counterclockwise," and the like refer to an orientation or positional relationship based on the orientation and positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, nor should it be construed as limiting the specific scope of protection of the present utility model. In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements. In the claims, specification and drawings of the present utility model, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.

It should be noted that, the "up-down direction" may be parallel to the vertical direction, or may form an included angle with the vertical direction. The "vertical direction" is perpendicular to the horizontal plane.

Referring to fig. 1 to 6, an adjustable seat according to the present utility model will now be described. An adjustable seat comprising a support assembly 1, a seat assembly 2, a first drive assembly 6, a backrest assembly 3 and a second drive assembly 5; the support assembly 1 comprises a bottom frame 101 and a support frame which is connected to the bottom frame 101 in a sliding manner along the up-down direction, wherein the support frame can be fixed at a designated height; the seat assembly 2 is rotatably connected to the support frame around a first axis; the first driving component 6 is arranged on the supporting frame and connected with the seat assembly 2, and the first driving component 6 is used for controlling the seat assembly 2 to rotate around a first axis; the backrest assembly 3 is rotatably connected to the seat assembly 2 about a second axis, which is parallel to the first axis; the second driving component 5 is arranged on the seat assembly 2 and connected with the backrest assembly 3, and the second driving component 5 is used for controlling the backrest assembly 3 to rotate around the second axis.

Compared with the prior art, the adjustable seat provided by the utility model can respectively adjust the angles of the seat assembly 2 and the backrest assembly 3, the first driving assembly 6 is used for adjusting the seat assembly 2 to rotate around a first axis, and the second driving assembly 5 is used for adjusting the backrest assembly 3 to rotate around a second axis, so that the adjustable seat is switched between a working state and a leisure state. The first driving component 6 enables the seat assembly 2 to form an included angle with the horizontal plane, and the second driving component 5 increases the included angle between the backrest assembly 3 and the horizontal plane, so that the adjustable seat is in a leisure state. At this time, the included angle between the backrest assembly 3 and the horizontal plane increases, and at the same time, the side of the seat assembly 2, which is close to the backrest assembly 3, is inclined downward to form an included angle with the horizontal plane. The human body lies on adjustable seat, and the back is laminated with backrest module 3, and buttock and thigh are laminated with seat support subassembly 2, because seat support subassembly 2 is close to backrest module 3's one side downward sloping, makes the buttock be less than the thigh, has avoided leading to thigh and buttock to keep away from the gliding problem in one side between the backrest because of the back leans back, has guaranteed human comfort level under the leisure state. The height of the supporting frame can be adjusted according to different heights and weights of different users, so that the adjustable chair is suitable for parameters of human bodies of the users, and the comfort level of the adjustable chair is improved.

When the chair is switched from the leisure state to the working state, the first driving assembly 6 controls the seat assembly 2 to rotate around the first axis, the second driving assembly 5 controls the backrest assembly 3 to rotate around the second axis, so that the seat assembly 2 is arranged along the horizontal plane, and the backrest assembly 3 is arranged along the vertical plane.

Optionally, the angle of rotation of the seat assembly 2 about the first axis is 0-10 °, and is stepless, i.e. the seat assembly 2 does not stay at any angle during the adjustment from 0 ° to 10 °, avoiding discomfort to the human body during the adjustment.

Alternatively, the backrest module 3 is rotated about the second axis through an angle of 90-130 ° and is infinitely adjustable.

It should be noted that "stepless adjustment" means adjustment in which the adjustment manner is not jump-type, but is arbitrary relatively smooth in one range.

In some embodiments, referring to fig. 1 to 4, the first driving assembly 6 includes a first fixing base, a first mounting base 602, and a first driver 601, where the first fixing base is mounted on the support frame; the first mount 602 is mounted to the seat assembly 2; the first driver 601 can stretch out and draw back along a first path, the first path is parallel to the up-down direction, the fixed end of the first driver 601 is rotationally connected to the first fixing base, and the stretch end is rotationally connected to the first mounting base 602.

In the operating condition, the seat assembly 2 is arranged along the horizontal direction, and when the seat assembly is switched to the leisure state, the first driver 601 extends to enable the seat assembly 2 to rotate around the first axis, one side, close to the backrest assembly 3, of the seat assembly 2 is controlled to incline downwards, and one side, far away from the backrest assembly 3, of the seat assembly 2 is inclined upwards, so that buttocks sitting on the seat assembly 2 are located below thighs, and the whole lower limbs of a human body are prevented from sliding towards one side, far away from the backrest assembly 3. Along with the extension of the first driver 601, the included angles between the first driver 601 and the first fixing base and the second fixing base 503 are changed, so that the rotation of the seat assembly 2 is realized. The solution in this embodiment is simple, and the rotation of the seat assembly 2 can be achieved by controlling the extension and retraction of the first driver 601, so that the operation is convenient.

Alternatively, the first driver 601 is a pneumatic telescopic rod or a hydraulic telescopic rod.

In some embodiments, referring to fig. 1 to 4, the second driving assembly 5 includes a second fixing base 502, a second mounting base 503, and a second driver 501, where the second fixing base 502 is mounted on the seat assembly 2; the second mounting seat 503 is mounted on the backrest assembly 3; the second driver 501 is capable of telescoping along a second path, the second path is perpendicular to the second axis, the fixed end of the second driver 501 is rotatably connected to the second fixing seat 502, and the telescoping end is rotatably connected to the second mounting seat 503.

In the working state, the backrest component 3 is arranged along the vertical direction, when the backrest component 3 is switched to the leisure state, the second driver 501 extends to enable the backrest component 3 to rotate around the second axis, the upper portion of the backrest component 3 is controlled to rotate towards the side far away from the seat component 2, and therefore the back and the buttocks of a person leaning on the backrest component 3 form an obtuse angle, and back muscles are relaxed. Along with the extension of the second driver 501, the included angle between the second driver 501 and the second fixing seat 502 and the second mounting seat 503 are changed, so as to realize the rotation of the backrest assembly 3. The solution in this embodiment is simple, and the rotation of the backrest module 3 can be achieved by controlling the extension and retraction of the second driver 501, so that the operation is convenient.

Optionally, the second actuator 501 is a pneumatic telescopic rod or a hydraulic telescopic rod.

Specifically, the person leans against the backrest module 3, and after the pressure is applied to the backrest module 3, the backrest bracket 3 triggers the second actuator 501, and the second actuator 501 extends to rotate the backrest module 3.

In some embodiments, referring to fig. 1-6, the adjustable seat further comprises a leg rest assembly 4 connected to the support frame, the leg rest assembly 4 comprising a fixing member 401, a sliding member 402 and a leg rest 403, the fixing member 401 being connected to the support frame and located below the seat assembly 2; the slider 402 is slidably coupled to the fixed member 401 along a third path that is perpendicular to the first axis; leg support 403 is attached to the end of slider 402 remote from anchor 401.

In the working state, the slider 402 coincides with the fixed member 401 on the third path; in the rest state, the slider 402 slides along the third path to gradually move away from the fixing member 401 until contacting the lower leg, providing support to the lower leg, and relaxing the muscles of the lower leg. The sliding of the leg support 403 can be conveniently controlled by the scheme in the embodiment, excessive space can not be occupied in the working state, the support can be provided for the lower leg in the leisure state, and the muscles of the lower leg can be relaxed.

Optionally, the fixing member 401 has a cavity along a third path, and the sliding member 402 is slidably inserted into the cavity along the third path. In the operational state, the slider 402 is positioned within the cavity; in the rest state, the slider 402 slides out of the cavity along a third path.

In some embodiments, referring to fig. 5 to 6, the leg support 403 includes a rotating shaft 4031, a shaft sleeve 4033 and a leg plate 4032, the rotating shaft 4031 is connected to an end of the sliding member 402 away from the fixing member 401, and an axis of the rotating shaft 4031 is parallel to the first axis; the shaft sleeve 4033 is rotatably sleeved outside the rotating shaft 4031; the leg plate 4032 is connected to the shaft sleeve 4033, the leg plate 4032 rotates to a storage state under the rotating shaft 4031 and a support state turned upwards, when the leg plate 4032 is in the storage state, the leg plate 4032 is parallel to the sliding member 402, and when the leg plate 4032 is in the support state, an included angle between the leg plate 4032 and the sliding member 402 is 90 ° -140 °.

In the storage state, the sliding member 402 and the fixing member 401 are overlapped on the third path, and meanwhile, the leg plate 4032 is turned downwards to be parallel to the sliding member 402, so that the leg plate 4032 is prevented from occupying excessive space, and storage is facilitated. In the support state, the slider 402 is slid along the third path away from the side of the backrest module 3 until the leg plate 4032 contacts the calf. After leg plate 4032 is in contact with the calf, the calf is at an angle to the thigh rather than having the calf collinear with the thigh. The scheme in this embodiment can provide the support to the shank under the leisure state, relax the muscle of shank, avoid shank and thigh to lie in same straight line simultaneously and lead to whole human body to be in the state of lying down, reduce the space that occupies at the leisure state. In addition, the leg plate 4032 can be turned over, and is conveniently stored under the sliding member 402 in the storage state, so that the storage space is saved.

It should be noted that the adjustable seat is generally used in a working or learning place, and thus the space of the place of use is limited. If the leg plate 4032 is directly lifted to be in line with the thigh in the leisure state, a large space is necessarily occupied, resulting in limited use of the adjustable seat.

In some embodiments, referring to fig. 1 to 2, the support frame includes two connecting members 102, two locking members 103 and a mounting member 104, the two connecting members 102 are slidably connected to the bottom frame 101 along the up-down direction, and the seat assembly 2 is rotatably connected to the two connecting members 102; the two ends of the mounting piece 104 are respectively connected with the two connecting pieces 102, and the first driving component 6 is arranged on the mounting piece 104; both locking members 103 are provided on the chassis 101, and the locking members 103 are used to fix the connecting member 102 to the chassis 101.

The height of the link 102 can be adjusted according to the use requirement, and then the link 102 is fixed to a designated height by the locking member 103. The chassis 101 provides support for the link 102, seat assembly 2 and backrest assembly 3. The first drive assembly 6 is provided on the mounting member 104 and is coupled to the seat assembly 2 to control rotation of the seat assembly 2 about the first axis.

In some embodiments, referring to fig. 1-4, the chassis 101 includes two supports 1011, a stiffener 1012, and two legs 1013, the two supports 1011 being spaced along a fourth path, the fourth path being parallel to the first axis; the reinforcement 1012 is disposed along the fourth path and is connected to the two supporting pieces 1011, respectively; the supporting legs 1013 and the supporting members 1011 are arranged in a one-to-one correspondence manner, the supporting legs 1013 are internally provided with accommodating grooves along the up-down direction, each connecting member 102 is slidably inserted into one accommodating groove, the locking member 103 is arranged on the supporting legs 1013, and one end of the locking member 103 is inserted into the accommodating groove.

The connecting piece 102 is inserted into the accommodating groove, and the height of the connecting piece 102 can be adjusted by adjusting the insertion amount of the connecting piece 102 in the accommodating groove. The reinforcement 1012 connects the two support members 1011, avoiding the two support members 1011 from being apart from each other along the fourth path after being forced, and improving the stability of the two support members 1011.

In some embodiments, referring to fig. 2 and 7, the connecting piece 102 is provided with a plurality of limiting holes 1021 along the up-down direction, the supporting leg 1013 is provided with mounting holes, the mounting holes are arranged corresponding to the limiting holes 1021, the locking piece 103 comprises a limiting post 1031 and a knob 1032, and the limiting post 1031 is inserted into the limiting holes 1021 and the mounting holes; the knob 1032 is connected to an end of the limit post 1031 and is located outside the mounting hole.

When the connector 102 is adjusted to a specified height, the operation knob 1032 causes the limit posts 1031 to be inserted into the mounting holes and the corresponding limit holes 1021, thereby fixing the connector 102 to the specified height. The scheme in this embodiment is simple, convenient to operate, and the spacing post 1031 is inserted into or separated from the mounting hole or the spacing hole 1021 through the operation knob 1032.

Optionally, the limit post 1031 is in threaded connection with the mounting hole, and the rotation knob 1032 controls the screwing amount of the limit post 1031, so as to realize the plugging or separation of the limit post 1031 and the limit hole 1021, and can move the connecting piece 102 or fix the connecting piece 102.

Optionally, a spring is disposed outside the limit post 1031, and the spring is configured with a pre-tightening force that enables the limit post 1031 to be inserted into the limit hole 1021. When the connector 102 needs to be moved, the knob 1032 is pulled outwards to separate the limit post 1031 from the limit hole 1021, so that the connector 102 can be moved. After the connecting piece 102 is moved to a specified height, the force applied to the knob 1032 is stopped, and the limit posts 1031 are inserted into the corresponding limit holes 1021 under the action of the elastic piece.

In some embodiments, referring to fig. 2 to 4, the backrest assembly 3 includes a connection shaft 302, an upper backrest bracket 301, a backrest mechanism 304 and a lower backrest bracket 303, the connection shaft 302 is rotatably connected to the seat assembly 2, and an axis of the connection shaft 302 forms a second axis; the upper back support 301 is connected to the connecting shaft 302 and is located above the connecting shaft 302; a backrest mechanism 304 is connected to the upper backrest bracket 301 for providing support to the back; the lower back bracket 303 is connected to the connection shaft 302 and located below the connection shaft 302, and the second driving assembly 5 is connected to the lower back bracket 303.

The lower back support 303 is connected with the second driving assembly 5, and the second driving assembly 5 controls the lower back support 303 to move towards the side close to the seat assembly 2, so that the connecting shaft 302 rotates, and the upper back support 301 connected to the upper portion of the connecting shaft 302 rotates towards the direction opposite to the lower back support 303, thereby realizing the switching from the working state to the leisure state.

In some embodiments, referring to fig. 1 to 2, the backrest assembly 3 further includes a headrest mechanism 305 detachably connected to the backrest mechanism 304, the backrest mechanism 304 including a back plate 3041 and a connection seat 3042, the back plate 3041 being connected to the upper back bracket 301; the connection seat 3042 is arranged at the upper part of the back plate 3041, and a connection groove is formed in the connection seat 3042; the headrest mechanism 305 includes a plug 3052 and a pillow 3051, the plug 3052 being inserted into the connection groove; pillow 3051 is attached to the top end of plug 3052 for providing support to the head.

The plug 3052 is in plug-in fit with the connecting groove, so that the pillow 3051 can be conveniently installed or detached, the headrest mechanism 305 can be quickly installed when the headrest mechanism is used, and the headrest mechanism is convenient to detach when the headrest mechanism is not needed to be used. The pillow 3052 supports the head, improving the comfort of the user during work or leisure.

Optionally, a plurality of clamping blocks are arranged in the connecting groove along the up-down direction, and the plug connector is in plug connection fit with the clamping blocks. According to different parameters of human body, the plug connector can be adjusted to be clamped with the corresponding clamping block, so that the height of the pillow 3052 is adjusted.

In some embodiments, referring to fig. 1 to 2, the seat assembly 2 includes two seat brackets 201, a seat plate 204, a first reinforcement member 202 and a second reinforcement member 203, where the two seat brackets 201 are disposed at intervals along a direction perpendicular to the first axis, one end of the seat bracket 201 is rotatably connected to the support frame, and the other end is rotatably connected to the backrest assembly 3; the seat plate 204 is connected to the two seat holders 201; the two ends of the first reinforcement 202 are respectively connected to the two seat brackets 201, and the first driving assembly 6 is connected to the first reinforcement 202; the second reinforcement 203 is connected to the two seat holders 201 at both ends thereof, and the second driving assembly 5 is connected to the second reinforcement 203.

The first reinforcement member 202 is connected with the two seat support frames 201 respectively, and the second reinforcement member 203 is connected with the two seat support frames 201 respectively, so that the two seat support frames 201 are prevented from being far away from or approaching to each other after being stressed, and the connection stability of the two seat support frames 201 is improved. The first drive assembly 6 is coupled to the first reinforcement member 202 to control rotation of the first reinforcement member 202 and the seat support frame 201 about the first axis. The second reinforcement 203 is connected to secure the second drive assembly 5 such that the second drive assembly 5 controls rotation of the backrest assembly 3 about the second axis.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. An adjustable seat, comprising:

the support assembly comprises a bottom frame and a support frame which is connected to the bottom frame in a sliding manner along the up-down direction, and the support frame can be fixed at a designated height;

the seat assembly is rotationally connected with the support frame around a first axis;

the first driving assembly is arranged on the supporting frame and connected with the seat assembly, and is used for controlling the seat assembly to rotate around the first axis;

a backrest assembly rotatably coupled to the seat assembly about a second axis, the second axis being parallel to the first axis; and

the second driving assembly is arranged on the seat assembly and connected with the backrest assembly, and the second driving assembly is used for controlling the backrest assembly to rotate around the second axis.

2. The adjustable seat according to claim 1, wherein the first drive assembly comprises:

the first fixing seat is arranged on the support frame;

a first mount mounted to the seat assembly; and

the first driver can stretch out and draw back along a first path, the first path is parallel to the upper and lower directions, the fixed end of the first driver is rotationally connected with the first fixing seat, and the stretch end is rotationally connected with the first mounting seat.

3. The adjustable seat according to claim 1, wherein the second drive assembly comprises:

the second fixing seat is arranged on the seat assembly;

the second mounting seat is mounted on the backrest component; and

the second driver can stretch out and draw back along a second path, the second path is perpendicular to the second axis, the fixed end of the second driver is rotationally connected with the second fixing seat, and the stretch end is rotationally connected with the second mounting seat.

4. The adjustable seat according to claim 1, further comprising a leg rest assembly connected to the support bracket, the leg rest assembly comprising:

the fixing piece is connected with the supporting frame and is positioned below the seat assembly;

a slider slidably coupled to the fixed member along a third path, the third path being perpendicular to the first axis; and

and the leg support is connected with one end of the sliding piece far away from the fixing piece.

5. The adjustable seat of claim 4, wherein the leg rest comprises:

the rotating shaft is connected to one end, far away from the fixed piece, of the sliding piece, and the axis of the rotating shaft is parallel to the first axis;

the shaft sleeve is rotationally sleeved outside the rotating shaft; and

the leg plate is connected to the shaft sleeve, the leg plate rotates to a storage state below the rotating shaft and a support state capable of overturning upwards, the leg plate is parallel to the sliding piece when in the storage state, and an included angle between the leg plate and the sliding piece is 90-140 degrees when in the support state.

6. The adjustable seat of claim 1, wherein the support bracket comprises:

the two connecting pieces are respectively connected to the underframe in a sliding way along the up-down direction, and the seat assembly is rotationally connected to the two connecting pieces;

the two ends of the mounting piece are respectively connected with the two connecting pieces, and the first driving assembly is arranged on the mounting piece; and

the two locking parts are arranged on the underframe, and the locking parts are used for fixing the connecting parts on the underframe.

7. The adjustable seat according to claim 6, wherein the chassis comprises:

two supports spaced along a fourth path, the fourth path being parallel to the first axis;

a reinforcement member disposed along the fourth path and connected to the two support members, respectively; and

the support comprises two support legs, wherein the support legs are arranged in one-to-one correspondence with the support members, the support legs are internally provided with accommodating grooves along the vertical direction, each connecting piece is slidably inserted into one accommodating groove, the locking piece is arranged on the support legs, and one end of the locking piece is inserted into one accommodating groove.

8. The adjustable seat of claim 1, wherein the back assembly comprises:

a connecting shaft rotatably connected to the seat assembly, an axis of the connecting shaft forming the second axis;

the upper back support is connected with the connecting shaft and is positioned above the connecting shaft;

the backrest mechanism is connected with the upper backrest bracket and is used for providing support for the back; and

the lower back support is connected to the connecting shaft and located below the connecting shaft, and the second driving assembly is connected to the lower back support.

9. The adjustable seat according to claim 8, wherein the back rest assembly further comprises a headrest mechanism detachably connected to the back rest mechanism, the back rest mechanism comprising:

the backboard is connected with the upper back support; and

the connecting seat is arranged at the upper part of the backboard, and a connecting groove is formed in the connecting seat;

the headrest mechanism includes:

the plug connector is inserted into the connecting groove; and

and the pillow pad is connected to the top end of the plug connector and is used for supporting the head.

10. The adjustable seat according to claim 1, wherein the seat assembly comprises:

the two seat support frames are arranged at intervals along the direction perpendicular to the first axis, one end of each seat support frame is rotatably connected with the corresponding supporting frame, and the other end of each seat support frame is rotatably connected with the corresponding backrest component;

a seat plate connected to the two seat brackets;

the two ends of the first reinforcing piece are respectively connected with the two seat support frames, and the first driving component is connected with the first reinforcing piece; and

and the two ends of the second reinforcing piece are respectively connected with the two seat support brackets, and the second driving assembly is connected with the second reinforcing piece.