CN220607853U - Adjustable chair frame - Google Patents

Abstract

The utility model provides an adjusting chair frame, which comprises a support frame, a chair seat bracket, a first driving component, a backrest bracket and a second driving component; the seat support bracket is rotationally connected with the support bracket around a first axis; the first driving component is arranged on the supporting frame and connected with the seat support bracket, and is used for controlling the seat support bracket to rotate around the first axis; the backrest bracket is rotatably connected to the seat bracket around a second axis, and the second axis is parallel to the first axis; the second driving component is arranged on the seat support and connected with the backrest support, and the second driving component is used for controlling the backrest support to rotate around the second axis. The utility model provides an adjusting chair frame, which aims to solve the problem that the chair frame in the prior art can only adjust the inclination angle of a backrest, so that 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.

Description

Adjustable chair frame

Technical Field

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

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. The seat can realize the adjustment of the cushion and the backrest, and an adjustable seat frame is generally adopted, so that the seat is switched between a working state and a leisure state.

Because the existing adjusting chair frame only increases the included angle between the backrest and the 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.

Disclosure of Invention

The utility model aims to provide an adjusting chair frame, which aims to solve the problem that the chair frame in the prior art can only adjust the inclination angle of a backrest, so that 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 the 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 adjusting chair frame comprising:

a support frame;

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

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

a back support rotatably connected to the seat support about a second axis, the second axis being parallel to the first axis; and

the second driving component is arranged on the seat support and connected with the backrest support, and is used for controlling the backrest support 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;

the first mounting seat is mounted on the seat support; 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 support;

the second mounting seat is mounted on the backrest bracket; 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 chair frame further includes a leg support connected to the support frame, the leg support including:

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

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:

a base;

the two connecting pieces are respectively connected to the base in a sliding manner along the up-down direction, and the seat support 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 pieces are arranged on the base, and the locking pieces are used for fixing the connecting piece on the base.

In one possible implementation, the base 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 manner, the connecting piece is provided with a plurality of limiting holes along the up-down direction, the supporting leg is provided with a mounting hole, the mounting hole corresponds to the limiting hole, and the locking piece comprises:

the limiting column is inserted into the limiting hole and the mounting hole; and

the knob is connected to the end part of the limiting column and is positioned outside the mounting hole.

In one possible implementation, the backrest support includes:

the connecting shaft is rotationally connected to the seat support, and the axis of the connecting shaft forms the second axis;

the upper backboard is connected with the connecting shaft and is positioned above the connecting shaft; and

and the lower backboard is connected with the connecting shaft and positioned below the connecting shaft, and the second driving assembly is connected with the lower backboard.

In one possible implementation, the seat support includes:

the two seat parts are arranged at intervals along the direction perpendicular to the first axis, one end of each seat part is rotationally connected with the supporting frame, and the other end of each seat part is rotationally connected with the backrest bracket;

the first driving component is connected to the first reinforcing piece; and

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

The adjustable chair frame provided by the utility model has the beneficial effects that: compared with the prior art, the adjustable chair frame can respectively adjust the angles of the chair seat support and the backrest support, the first driving assembly is used for adjusting the rotation of the chair seat support around the first axis, and the second driving assembly is used for adjusting the rotation of the backrest assembly around the second axis, so that the adjustable chair frame is switched between a working state and a leisure state. The first driving component is used for enabling the seat support to form an included angle with the horizontal plane, and the second driving component is used for increasing the included angle between the backrest support and the horizontal plane, so that the chair frame is in a leisure state. At this time, the included angle between the backrest support and the horizontal plane is increased, and at the same time, one side of the seat support close to the backrest support is inclined downwards to form an included angle with the horizontal plane. The human body lies on the adjusting chair frame, and the back is laminated with the back support, buttock and thigh are laminated with the seat support, because the seat support is close to the one side downward sloping of back support, makes the buttock be less than the thigh, has avoided leading to thigh and buttock to keeping away from the gliding problem in one side between the back because of the back leans back, has guaranteed human comfort level under the leisure state.

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 structural view of an adjustable chair frame according to an embodiment of the present utility model;

FIG. 2 is a bottom view of an adjustable chair frame 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 side view of an operational state of an adjustable chair frame according to an embodiment of the present utility model;

FIG. 5 is a side view of an adjustable chair frame according to an embodiment of the present utility model;

fig. 6 is a schematic perspective view of a locking member according to an embodiment of the present utility model.

In the figure:

1. a support frame; 101. a base; 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 support; 201. a seat member; 202. a first reinforcement; 203. a second reinforcement;

3. a backrest bracket; 301. an upper backboard; 302. a connecting shaft; 303. a lower back plate;

4. a leg support; 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 adjusting chair frame provided by the present utility model will now be described. The adjustable chair frame comprises a support frame 1, a seat support bracket 2, a first driving component 6, a backrest bracket 3 and a second driving component 5; the seat support bracket 2 is rotatably connected to the support bracket 1 around a first axis; the first driving component 6 is arranged on the support frame 1 and connected with the seat support bracket 2, and the first driving component 6 is used for controlling the seat support bracket 2 to rotate around a first axis; the backrest bracket 3 is rotatably connected to the seat bracket 2 around a second axis, which is parallel to the first axis; the second driving component 5 is arranged on the seat support bracket 2 and connected with the backrest support bracket 3, and the second driving component 5 is used for controlling the backrest support bracket 3 to rotate around the second axis.

Compared with the prior art, the adjustable chair frame provided by the utility model has the advantages that the angles of the seat support bracket 2 and the backrest support bracket 3 can be respectively adjusted, the first driving component 6 is used for adjusting the seat support bracket 2 to rotate around a first axis, and the second driving component 5 is used for adjusting the backrest component to rotate around a second axis, so that the adjustable chair frame is switched between a working state and a leisure state. The first driving component 6 is used for enabling the seat support 2 to form an included angle with the horizontal plane, and the second driving component 5 is used for increasing the included angle between the backrest support 3 and the horizontal plane, so that the chair frame is in a leisure state. At this time, the angle between the backrest support 3 and the horizontal plane increases, and at the same time, the side of the seat support 2, which is close to the backrest support 3, is inclined downward to form an angle with the horizontal plane. The human body lies on the regulation chair frame, and the back is laminated with backrest support 3, and buttock and thigh are laminated with seat support 2, because seat support 2 is close to backrest support 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.

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

Optionally, the angle of rotation of the seat support 2 around the first axis is 0-10 °, and is stepless adjustment, that is, the seat support 2 will not stay at any angle in the process of adjusting from 0 ° to 10 °, so as to avoid discomfort of human body in the adjusting process.

Optionally, the angle of rotation of the backrest support 3 about the second axis is 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 3, the first driving assembly 6 includes a first fixing base 603, a first mounting base 602, and a first driver 601, where the first fixing base 603 is mounted on the support frame 1; the first mounting seat 602 is mounted on the seat support 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 seat 603, and the stretch end is rotationally connected to the first mounting seat 602.

When in a working state, the seat support 2 is arranged along the horizontal direction, and when the seat support is switched to a leisure state, the first driver 601 stretches to enable the seat support 2 to rotate around the first axis, one side, close to the backrest support 3, of the seat support 2 is controlled to incline downwards, and one side, far away from the backrest support 3, of the seat support 2 inclines upwards, so that buttocks sitting on the seat support 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 support 3. Along with the extension of the first driver 601, the included angle between the first driver 601 and the first fixing seat 603 and the second mounting seat 503 are changed, so as to realize the rotation of the seat support 2. The solution in this embodiment is simple, and the rotation of the seat support 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 3, 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 support 2; the second mounting seat 503 is mounted on the backrest bracket 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 bracket 3 is arranged along the vertical direction, when the backrest bracket 3 is switched to the leisure state, the second driver 501 extends to enable the backrest bracket 3 to rotate around the second axis, the upper part of the backrest bracket 3 is controlled to rotate towards one side far away from the seat support 2, and therefore the back and the buttocks of a person leaning on the backrest bracket 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 bracket 3. The solution in this embodiment is simple, and the rotation of the backrest bracket 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 human body leans against the back support 3, and after pressure is applied to the back support 3, the back support 3 triggers the second actuator 501, and the second actuator 501 extends to rotate the back support 3.

In some embodiments, referring to fig. 1 to 5, the adjustable chair frame further comprises a leg support 4 connected to the support frame 1, wherein the leg support 4 comprises a fixing member 401, a sliding member 402 and a leg support 403, and the fixing member 401 is connected to the support frame 1 and is located below the seat support 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. 1 to 5, 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 back rest bracket 3 until the leg plate 4032 comes into contact with the lower leg. 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 chair rack 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 directly lifts the lower leg to be in the same straight line with the thigh in the leisure state, a large space is necessarily occupied, which results in limited use place of the adjustable chair frame.

In some embodiments, referring to fig. 1 to 5, the support frame 1 includes a base 101, two connecting members 102, a mounting member 104 and two locking members 103, the two connecting members 102 are slidably connected to the base 101 along an up-down direction, and the seat support frame 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 base 101, and the locking members 103 are used to fix the connecting member 102 to the base 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 base 101 provides support for the connector 102, seat support bracket 2 and backrest bracket 3. The first drive assembly 6 is provided on the mounting member 104 and is coupled to the seat support frame 2 to control rotation of the seat support frame 2 about the first axis.

In some embodiments, referring to fig. 1-5, the base 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 6, 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. 1 to 2, the backrest bracket 3 includes a connection shaft 302, an upper back plate 301 and a lower back plate 303, the connection shaft 302 is rotatably connected to the seat bracket 2, and an axis of the connection shaft 302 forms a second axis; the upper backboard 301 is connected to the connecting shaft 302 and is located above the connecting shaft 302; the lower back plate 303 is connected to the connecting shaft 302 and located below the connecting shaft 302, and the second driving assembly 5 is connected to the lower back plate 303.

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

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

The first reinforcement member 202 is connected with the two seat members 201 respectively, and the second reinforcement member 203 is connected with the two seat members 201 respectively, so that the two seat members 201 are prevented from being far away from or approaching each other after being stressed, and the connection stability of the two seat members 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 member 201 about the first axis. The second reinforcement 203 is connected to fix the second driving assembly 5 such that the second driving assembly 5 controls the rotation of the backrest bracket 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. The regulation chair frame, its characterized in that includes:

a support frame;

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

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

a back support rotatably connected to the seat support about a second axis, the second axis being parallel to the first axis; and

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

2. The adjustable chair rack of claim 1, wherein said first drive assembly comprises:

the first fixing seat is arranged on the support frame;

the first mounting seat is mounted on the seat support; 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 chair rack of claim 1, wherein said second drive assembly comprises:

the second fixing seat is arranged on the seat support;

the second mounting seat is mounted on the backrest bracket; 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 chair frame of claim 1, further comprising a leg support connected to said support frame, said leg support comprising:

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

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 chair rack of claim 4 wherein said 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 chair rack of claim 1 wherein said support frame comprises:

a base;

the two connecting pieces are respectively connected to the base in a sliding manner along the up-down direction, and the seat support 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 pieces are arranged on the base, and the locking pieces are used for fixing the connecting piece on the base.

7. The adjustable chair rack of claim 6 wherein said base 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 chair frame of claim 7, wherein said connector has a plurality of limiting holes along an up-down direction, said leg has a mounting hole, said mounting hole is disposed in correspondence with said limiting hole, said locking member comprises:

the limiting column is inserted into the limiting hole and the mounting hole; and

the knob is connected to the end part of the limiting column and is positioned outside the mounting hole.

9. The adjustable chair rack of claim 1 wherein said back support comprises:

the connecting shaft is rotationally connected to the seat support, and the axis of the connecting shaft forms the second axis;

the upper backboard is connected with the connecting shaft and is positioned above the connecting shaft; and

and the lower backboard is connected with the connecting shaft and positioned below the connecting shaft, and the second driving assembly is connected with the lower backboard.

10. The adjustable seat frame of claim 1 wherein said seat support comprises:

the two seat parts are arranged at intervals along the direction perpendicular to the first axis, one end of each seat part is rotationally connected with the supporting frame, and the other end of each seat part is rotationally connected with the backrest bracket;

the first driving component is connected to the first reinforcing piece; and

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