CN220212410U - Supporting mechanism of sitting and standing chair and chair - Google Patents

Abstract

The utility model discloses a supporting mechanism of a sitting and standing chair and a chair, wherein the supporting mechanism comprises a supporting seat and two supporting bodies, the two supporting bodies are rotatably arranged at the left side and the right side of the supporting seat, a telescopic supporting component is arranged between each supporting body and the supporting seat, the telescopic supporting component stretches along with the state switching of the supporting bodies, and the telescopic supporting component always supports the supporting bodies; the chair comprises a back support, a chair back component, armrests and the supporting mechanism of the sitting and standing chair, wherein the back support is connected with the supporting mechanism, the armrests and the chair back component are arranged on the back support in a sliding mode and are in linkage with a supporting body, a user can sit normally under a tiling state, the armrests and the chair back component are located at lower heights to support, and the supporting body is located at higher heights to adapt to the heights of the waist back and the arms when the user rides and sits under a vertical state.

Description

Supporting mechanism of sitting and standing chair and chair

Technical Field

The utility model relates to the field of furniture, in particular to a supporting mechanism of a sitting and standing chair and the chair.

Background

Office staff and students sitting for a long time are more and more common, and the common seat used is difficult to adjust the posture, so that people can feel tired easily due to the fact that one person stands for a long time and the leg load is too heavy from the physiological aspect; people feel uncomfortable or tired after sitting for a long time, and various diseases such as hypomnesis, headache, dizziness, lumbar vertebra, cervical vertebra and the like can be caused by insufficient cerebral blood supply, weight of the whole body pressing on the bottom end of the vertebra and the like, so that the health is not good; so in order to solve a series of problems caused by sedentary sitting, people invent a sitting standing chair which can be switched between sitting posture and standing posture.

The sitting position and standing position are switched, and meanwhile, the support of the human body, namely the support of the waist and the back of the human body and the support of the arms of the human body are considered; even if the sitting posture is switched to, the user still rides on the sitting posture chair, and the body does not leave the sitting posture chair, so that the user can lean the trunk on the chair back to a certain extent and can rest the arms on the armrests, and the chair back and the armrests are required to be switched to the seat surface as much as possible to realize linkage.

In the previous generation product with the patent number of CN202110160882.8, the chair back and the seat face are switched and linked, and when the seat face is switched, a switch handle is arranged on the chair back and moves up and down, so that the seat back is linked, the switch handle is provided with a locking position on the upper and lower parts of the chair back and is used for supporting the chair seat in a sitting posture state and a standing posture state, but in the standing posture state, when a human body rides on the chair seat, most of the load given to the chair seat by the human body is transmitted to the chair back, so that the structural stability is not strong, the bearing pressure of the chair back is large, and the chair back is easy to shake.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a supporting mechanism of a sitting and standing chair, which comprises a supporting seat and two supporting bodies, wherein the two supporting bodies are rotatably arranged at the left side and the right side of the supporting seat, a telescopic supporting component is arranged between each supporting body and the supporting seat, the telescopic supporting component stretches along with the state switching of the supporting bodies, the telescopic supporting component always supports the supporting bodies, and when a human body sits flat or rides on the supporting bodies, the telescopic supporting component can effectively support the supporting bodies, the structure is more stable, the supporting performance is better, and the shaking condition of the supporting bodies does not occur.

The back support is connected with the supporting mechanism, the armrest and the chair back assembly are arranged on the back support in a sliding mode and are in linkage with the supporting body, the supporting body is used for a user to sit normally in a tiled state, the armrest and the chair back assembly are at lower heights for supporting, and the armrest and the chair back assembly are at higher heights for adapting to the heights of the waist back and the arms when the user rides in a vertical state; the back support is only used for guiding lifting, and the back support cannot shake due to the load transmitted by the support body during sitting or sitting due to the telescopic support component.

The technical scheme of the utility model is realized as follows:

a supporting mechanism of a sitting and standing chair comprises a supporting seat and two supporting bodies which are symmetrically arranged left and right, wherein the two supporting bodies are rotationally connected to the left side and the right side of the supporting seat, and a telescopic supporting component is arranged between each supporting body and the supporting seat; the support bodies have a flat-laid state and a vertical state, and the telescopic support assembly is configured to adapt to rotation of the two support bodies and provide support in the flat-laid state and the vertical state respectively; when the two supporting bodies are in a flat state, the two supporting bodies jointly form a sitting supporting surface for a user to sit flat; when the two supporting bodies are switched from a flat state to a vertical state, the two supporting bodies turn upwards and are close to each other to form a riding supporting surface for a user to ride.

The two supporting bodies are rotatably arranged on the supporting seat, and through the rotation of the supporting bodies, a sitting supporting surface for a user to sit flatly and a riding supporting surface for the user to ride on are respectively formed in a flat state, so that the switching between sitting posture and standing posture is realized, and the fatigue caused by sitting for a long time or standing for a long time is reduced; through installing flexible supporting component additional below the supporter, increase the stability of supporter under tiling state and vertical state, when supporter state switches, flexible supporting component unblock, and stretch out and draw back thereupon, when the supporter reaches tiling state or vertical state, flexible supporting component locks and supports the supporter, because the atress of supporter is directly born by flexible supporting component, human sit flat or ride when sitting on the supporter, flexible supporting component homoenergetic carries out effective support to the supporter, the structure is more stable, the supporting performance is better, the condition that does not have the supporter shake appears.

Preferably, the supporting bodies are provided with a near end and an edge end, the near ends of the two supporting bodies are positioned in the middle of the supporting seat and are adjacent to each other, the edge ends of the two supporting bodies are far away and are positioned at the left side and the right side respectively under the tiling state, and when the tiling state is switched to the vertical state, the two supporting bodies turn over and the two edge ends rotate upwards and are mutually close to each other. The inner side of the supporting body is a near end, the outer side of the supporting body is an edge end, and the rotating shaft when the supporting body turns over is positioned at the near end, so that the rotating shaft at the near end is smaller, the interference between the two supporting bodies is smaller, the edge end far away from the near end can rotate by a larger amplitude, the posture of the supporting body is changed, namely, the re-tiling state and the vertical state are switched, and the position of the edge end is obviously changed.

Preferably, the front end part and the rear end part of the supporting seat are respectively provided with a first rotating seat which is vertically arranged and bilaterally symmetrical, and the supporting body is rotatably arranged on the first rotating seat; the left end and the right end of the supporting seat are symmetrically provided with second rotating seats, the second rotating seats extend upwards and outwards, and the telescopic supporting assembly is rotationally connected with the second rotating seats. The existence of the rotating seat enables the supporting seat to have enough rotating space with the supporting body or the telescopic supporting component so as not to generate interference.

Preferably, the support body comprises a main body part and an ear part, wherein the ear part is positioned at the side edge of the main body part and forms an included angle with the main body part, and when the support body is in a flat state, the main body part is horizontal and the ear part sags; when the support body is in a vertical state, the main body part is vertical, the ears are horizontal, and the two ears are mutually attached together. The ears are positioned at the edge ends, and after the support body is switched to a vertical state, the two ears are abutted together to form a saddle-shaped seat surface for a user to ride comfortably.

Preferably, the support body is provided with a switch for unlocking or locking the telescopic support assembly. The two telescopic support assemblies are synchronously controlled through the single switch, so that the operation is more convenient and quicker.

Preferably, the telescopic support assembly is an air rod. The support body is supported by locking through unlocking to realize expansion and contraction so as to adapt to the rotation of the support body; the telescopic support assembly can also be a sleeve with a built-in clamping mechanism, such as a locking structure of a traditional lifting handrail.

The chair comprises a back support, a chair back component, armrests and the supporting mechanism of the sitting and standing chair, wherein the back support is vertically arranged, the lower part of the back support is connected with the supporting seat, the chair back component and the armrests are arranged on the back support in a sliding manner and are linked with the supporting body through a hinging rod, the armrests are configured to support arms of a human body, and the chair back component is configured to support waists and backs of the human body; when the support body is switched from the flat state to the vertical state, the armrest and the chair back assembly rise along with the armrest, and when the support body is switched from the vertical state to the flat state, the armrest and the chair back assembly descend along with the armrest. The support body is used for a user to sit normally in a flat state, the armrest and the chair back assembly are at a lower height for supporting, and when the support body is used for the user to sit in a vertical state, the armrest and the chair back assembly are at a higher height for adapting to the heights of the waist, the back and the arms when the user sits in a riding state; the back support is only used for guiding lifting, and the back support cannot shake due to the load transmitted by the support body when sitting down or sitting down due to the existence of the telescopic support component; the two supporting bodies are linked with the chair back component and the armrest, so that when a single supporting body is turned over, the chair back component and the armrest move, and meanwhile, the supporting body on the other side can be driven to turn over, and the operation is simpler and more convenient.

Preferably, the chair further comprises a lifting seat, wherein the lifting seat is arranged on the back support in a sliding manner, and the armrests and the chair back assembly are arranged on the lifting seat; the back support comprises a lifting frame, the lifting frame is arranged inside the back support, the lifting seat is arranged on the lifting frame in a sliding mode, a sleeve is arranged between the lifting seat and the lifting frame, the sleeve is sleeved on the lifting frame, and the lifting seat is connected to the sleeve. The sliding fit of the lifting frame and the lifting seat realizes the sliding fit of the back support, the chair back component and the armrests, so that the chair back component and the armrests can lift along with the overturning of the supporting body, and the supporting positions of the back component and the armrests on a human body are adjusted.

Preferably, the lifting seat comprises a connecting plate, one end of the hinging rod is hinged on the connecting plate, and the other end of the hinging rod is hinged at the rear end part of the supporting body; the sleeve extends forwards and is provided with a fixing plate, and the connecting plate is connected with the sleeve through the fixing plate. The articulated rod is a rod piece with two ends capable of being articulated, the articulated rod after being rotationally connected can change the posture along with the position change of the connected part, but the length of the articulated rod cannot be changed, and therefore the linkage effect is achieved.

Preferably, the lifting seat comprises two vertical rods, the bushing is clamped in the bushing, the bushing is positioned between the bushing and the vertical rods, a plurality of vertical raised strips are arranged on the inner surface of the bushing, and the raised strips are configured to reduce the friction area of the bushing and the vertical rods. The raised strips can reduce friction, so that the sliding is smoother; a slider may also be provided in the sleeve to achieve a friction reducing effect.

The design starting point, the idea and the beneficial effects of the utility model adopting the technical scheme are as follows:

1. the two supporting bodies are rotatably arranged on the supporting seat, and through the rotation of the supporting bodies, sitting supporting surfaces for users to sit flatly and riding supporting surfaces for users to sit on are formed under the vertical state respectively, so that the switching between sitting postures and standing postures is realized, and the fatigue feeling caused by sitting for a long time or standing for a long time is reduced.

2. Through installing flexible supporting component additional below the supporter, increase the stability of supporter under tiling state and vertical state, when supporter state switches, flexible supporting component unblock, and stretch out and draw back thereupon, when the supporter reaches tiling state or vertical state, flexible supporting component locks and supports the supporter, because the atress of supporter is directly born by flexible supporting component, human sit flat or ride when sitting on the supporter, flexible supporting component homoenergetic carries out effective support to the supporter, the structure is more stable, the supporting performance is better, the condition that does not have the supporter shake appears.

3. The support body is in the tiling state for the user to sit normally, and handrail and back of the chair subassembly are in lower height in order to support, and when the support body was ridden for the user under vertical state, handrail and back of the chair subassembly were in higher height in order to adapt to waist back and arm height when human body ridden and sat.

4. The back support is only used for guiding lifting, and the back support cannot shake due to the load transmitted by the support body during sitting or sitting due to the telescopic support component.

5. The two supporting bodies are linked with the chair back component and the armrest, so that when a single supporting body is turned over, the chair back component and the armrest move, and meanwhile, the supporting body on the other side can be driven to turn over, and the operation is simpler and more convenient.

Drawings

Fig. 1 is a schematic perspective view of a seat according to the present utility model in which a support body is in a vertical state in embodiment 1;

fig. 2 is a front view of the seat of the present utility model with the support in the vertical state in embodiment 1;

fig. 3 is a schematic perspective view of the lifting seat in embodiment 1 of the present utility model disposed on the back support;

fig. 4 is a schematic perspective view showing the hinge rod hinged with the connecting plate and the supporting body in embodiment 1;

fig. 5 is a schematic perspective view of the sleeve of embodiment 1 sleeved on the vertical rod;

FIG. 6 is a schematic perspective view of the bushing in example 1 of the present utility model;

FIG. 7 is a front view showing the elevation of the seatback assembly while the state of the supporting body is switched in embodiment 2 of the present utility model;

fig. 8 is a schematic perspective view of a support body in a flat-laid state in embodiment 2 according to the present utility model;

fig. 9 is a rear view of the support body in a flat state in embodiment 2 of the present utility model;

fig. 10 is a schematic diagram showing a second perspective structure of the support body in a flat-laid state in embodiment 2;

fig. 11 is a schematic perspective view showing a support body in a vertical state in embodiment 2 of the present utility model;

fig. 12 is a schematic perspective view of the utility model in embodiment 2, wherein the sleeve is sleeved on the lifting frame;

fig. 13 is a schematic perspective view showing a structure in which a slider is provided in a sleeve in embodiment 2 of the present utility model.

The reference numerals are as follows: a support base 1; a support body 2; a proximal end 21; an edge end 22; a main body 23; an ear 24; a telescopic support assembly 3; a first rotary seat 4; a second rotating seat 5; a back support 6; a handrail 7; a hinge lever 8; a lumbar support 9; a backrest 10; a frame 101; a support cloth 102; a lifting seat 11; a connection plate 111; a lifting frame 12; a vertical rod 121; a sleeve 13; a fixing plate 131; a rear cover 132; a front plate 133; a bushing 14; a convex strip 15; a pin 17; a clamping hole 19; a slider 20.

Description of the embodiments

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific embodiments of the present utility model are as follows:

examples

As shown in fig. 1 and 2, the utility model provides a supporting mechanism of a sitting and standing chair, which comprises a supporting seat 1 and two supporting bodies 2 which are symmetrically arranged left and right, wherein the two supporting bodies 2 are rotationally connected to the left and right sides of the supporting seat 1, and a telescopic supporting component 3 is arranged between each supporting body 2 and the supporting seat 1; the support bodies 2 have a tiled state and a vertical state, and the telescopic support assembly 3 is configured to accommodate rotation of the two support bodies 2 and provide support in the tiled state and the vertical state, respectively; when the two supporting bodies 2 are in a flat state, the two supporting bodies 2 jointly form a sitting supporting surface for a user to sit flat; when the two supporting bodies 2 are switched from the flat state to the vertical state, the two supporting bodies 2 are turned upwards and are close to each other to form a riding supporting surface for a user to ride.

The two supporting bodies 2 are rotatably arranged on the supporting seat 1, and through the rotation of the supporting bodies 2, a sitting supporting surface for a user to sit flat and a riding supporting surface for the user to ride on are respectively formed in a flat state, so that the switching between sitting postures and standing postures is realized, and the fatigue feeling brought by long sitting or standing for a long time is reduced; through installing flexible supporting component 3 additional in support body 2 below, increase support body 2 in the stability of support body 2 under tiling state and the vertical state, when support body 2 state switches, flexible supporting component 3 unblock, and stretch out and draw back thereupon, when support body 2 reaches tiling state or vertical state, flexible supporting component 3 locks and supports support body 2, because support body 2 atress is directly born by flexible supporting component 3, human sit flat or ride when sitting on support body 2, flexible supporting component 3 homoenergetic effectively supports support body 2, the structure is more stable, the supporting property is better, the condition that does not have support body 2 shake appears.

The two supporting bodies 2 can be seen as a single chair seat which is divided into a left chair seat and a right chair seat, and the two supporting bodies 2 form a conventional chair seat together in a flat state, so that a user can sit on the sitting supporting surface; when the two supporting bodies 2 are turned to a riding state, a saddle-shaped seat is formed together, and a user can ride on the riding supporting surface; specifically, the supporting bodies 2 have approaching ends 21 and edge ends 22, and the approaching ends 21 of the two supporting bodies 2 are positioned in the middle of the supporting seat 1 and are adjacent to each other; the supporting body 2 comprises a main body part 23 and ear parts 24, the ear parts 24 are positioned at the side edges of the main body part 23, namely at the edge ends 22 of the supporting body 2, an included angle exists between the ear parts 24 and the main body part 23, when the supporting body 2 is in a flat-laid state, the edge ends 22 of the two supporting bodies 2 are far away and are respectively positioned at the left side and the right side, the main body part 23 is horizontal, and the ear parts 24 droop; when the supporting bodies 2 are switched from a flat state to a vertical state, the two supporting bodies 2 are turned over, and the two edge ends 22 are close to each other while rotating upwards; when the support body 2 is in the vertical state, the main body portion 23 is vertical and the ear portions 24 are horizontal, and the two ear portions 24 are abutted against each other; the inner side of the supporting body 2 is a close end 21, the outer side of the supporting body 2 is an edge end 22, and the rotating shaft of the supporting body 2 when being turned over is positioned at the close end 21, so that the rotation of the close end 21 is smaller, the interference between the two supporting bodies 2 is smaller, and the edge end 22 far away from the close end 21 can rotate by a larger extent, so that the posture of the supporting body 2 is changed, namely, the re-tiling state and the vertical state are switched, wherein the position of the edge end 22 is obviously changed; the lug 24 is located at the edge end 22, the lug 24 is provided with a curved surface, the lug 24 is concavely bent downwards and inwards after the support body 2 is switched to the vertical state, and the two lugs 24 are abutted together to form a saddle-shaped seat surface for a user to ride comfortably.

As shown in fig. 3 and 4, the front end and the rear end of the supporting seat 1 are respectively provided with a first rotating seat 4 which is vertically arranged and bilaterally symmetrical, the supporting body 2 is rotatably arranged on the first rotating seats 4, four first rotating seats 4 are respectively positioned at the left front part, the right front part, the left rear part and the right rear part of the supporting seat 1, and the first rotating seat 4 at one side is rotatably connected with the front end and the rear end of the single supporting body 2 so that the supporting body 2 can stably rotate on the two first rotating seats 4; the left end part and the right end part of the supporting seat 1 are symmetrically provided with second rotating seats 5, the second rotating seats 5 extend upwards and outwards, and the telescopic supporting component 3 is positioned between the two second rotating seats 5 and is in rotary connection with the second rotating seats 5; the existence of the rotating seat enables the supporting seat 1 and the supporting body 2 or the telescopic supporting component 3 to have enough rotating space so as not to generate interference; the telescopic supporting component 3 has various options, such as a gas rod or a locking structure of a traditional lifting handrail 7, in the embodiment, the telescopic supporting component 3 adopts the gas rod, and a switch for simultaneously unlocking or locking the telescopic supporting component 3 is arranged on the supporting body 2 and controls whether the gas rod is unlocked or not through a pull wire; the two telescopic support assemblies 3 are synchronously controlled through a single switch, so that the operation is more convenient and quicker; the extension and retraction are realized by unlocking to adapt to the rotation of the support body 2, and the support body 2 is supported by locking.

As shown in fig. 1-3, the support mechanism is applied to a seat, the seat comprises a back support 6, a back assembly, an armrest 7 and the support mechanism of the sitting and standing seat, the back support 6 is vertically arranged, the lower part of the back support 6 is connected with the support seat 1, the back assembly and the armrest 7 are slidably arranged on the back support 6 and are linked with the support body 2 through a hinging rod 8, the armrest 7 is configured to support the arms of a human body, and the back assembly is configured to support the waists and backs of the human body; when the support body 2 is switched from the flat state to the vertical state, the armrests 7 and the chair back assembly rise along with each other, and when the support body 2 is switched from the vertical state to the flat state, the armrests 7 and the chair back assembly descend along with each other; the support body 2 is used for a user to sit normally in a flat state, the armrest 7 and the chair back component are at a lower height for supporting, and when the support body 2 is used for the user to sit in a vertical state, the armrest 7 and the chair back component are at a higher height for adapting to the heights of the waist, the back and the arms when the user sits in a riding state; the back support 6 is only used for guiding lifting, and the back support 6 cannot shake due to the load transmitted by the support body 2 when sitting down or sitting down due to the telescopic support component 3; the two supporting bodies 2 are both linked with the chair back component and the armrest 7, so that when the single supporting body 2 is turned over, the chair back component and the armrest 7 move, and meanwhile, the supporting body 2 on the other side can be driven to turn over, and the operation is simpler and more convenient.

The chair back component comprises a waist rest 9 and a backrest 10, wherein the backrest 10 is fixedly arranged at the upper end part of the back support 6 and is configured to support the back of a human body, the chair also comprises a lifting seat 11, the lifting seat 11 is arranged on the back support 6 in a sliding manner, the armrests 7 and the waist rest 9 are arranged on the lifting seat 11, and the lifting seat 11 is linked with the two support bodies 2 through a hinging rod 8 respectively; the back support 6 comprises a lifting frame 12, the lifting frame 12 is arranged in the back support 6, the lifting seat 11 is arranged on the lifting frame 12 in a sliding manner, the lifting seat 11 and the lifting frame 12 are provided with a sleeve 13, the sleeve 13 is sleeved on the lifting frame 12, and the lifting seat 11 is connected to the sleeve 13; the sliding fit of the lifting frame 12 and the lifting seat 11 realizes the sliding fit of the back support 6, the chair back component and the armrests 7, so that the chair back component and the armrests 7 can lift along with the overturning of the supporting body 2, and the supporting positions of the back component and the armrests on a human body are adjusted.

As shown in fig. 5 and 6, the lifting seat 11 comprises a connecting plate 111, one end of the hinge rod 8 is hinged on the connecting plate 111, and the other end is hinged on the rear end part of the support body 2; the sleeve 13 extends forwards to form a fixing plate 131, and the connecting plate 111 is connected with the sleeve 13 through the fixing plate 131; the hinging rod 8 is a rod piece with two ends capable of being hinged, the hinging rod 8 after being rotationally connected can change the gesture but not the length along with the position change of the connected parts, so that the linkage effect is realized; the lifting seat 11 comprises two vertical rods 121, the bushing 14 is clamped in the sleeve 13, the bushing 14 is located between the sleeve 13 and the vertical rods 121, a plurality of vertical raised strips 15 are arranged on the inner surface of the bushing 14, the raised strips 15 are configured to reduce the friction area between the bushing 14 and the vertical rods 121, and the raised strips 15 can reduce friction, so that sliding is smoother.

The left and right ends of the lifting seat 11 extend outwards and forwards to form handrails 7; one end of the hinging rod 8 is hinged on the connecting plate 111, and the other end of the hinging rod 8 is hinged with the support body 2 through a pin shaft 17; the sleeve 13 is extended forward with a fixing plate 131, and the connection plate 111 is connected with the sleeve 13 through the fixing plate 131.

Example 2: the difference between this embodiment and embodiment 1 is only the back assembly and its connection to the back support 6, the armrests 7 and the connection of the lifting base 11 to the lifting frame 12:

as shown in fig. 7 to 11, the chair back assembly includes a backrest 10 and a lumbar support 9, the lumbar support 9 is mounted on the backrest 10 and located behind the backrest 10, the backrest 10 is configured to support the lumbar portion of a human body, the lumbar support 9 is configured to further support the lumbar portion of the human body, and the armrests 7 are fixedly mounted on both sides of the lumbar support 9 and configured to support the arms of the human body; specifically, the backrest 10 includes a frame 101 and a support cloth 102, and the lumbar support 9 is mounted on the frame 101 and located behind the support cloth 102; the lifting seat 11 is also fixedly connected with the frame 101, so that the backrest 10, the lumbar support 9 and the armrests 7 are synchronously lifted along with the lifting seat 11 when the support body 2 is overturned; one end of the hinging rod 8 is hinged on the lifting seat 11, and the other end of the hinging rod 8 is hinged with the support body 2 through a pin shaft 17; the fixing plate 131 of the sleeve 13 extending forward is directly connected to the elevating seat 11.

As shown in fig. 12 and 13, the lifting frame 12 is a vertical plate, the sleeve 13 is sleeved on the lifting frame 12, and a sliding block 20 is arranged between the sleeve 13 and the lifting frame 12; specifically, the sleeve 13 includes a rear cover 132 and a front plate 133, the rear cover 132 is located at the rear of the lifting frame 12, the front plate 133 is located at the front of the lifting frame 12, the rear cover 132 and the front plate 133 are spliced front and back to form the sleeve 13, the rear cover 132 and the front plate 133 are provided with clamping holes 19 for mounting the sliding blocks 20, and the sliding blocks 20 protrude from the inner surfaces of the rear cover 132 and the front plate 133 to contact with the lifting frame 12, so that the friction reducing effect is achieved.

Claims (10)

1. A support mechanism for a sitting and standing chair, which is characterized in that: the device comprises a supporting seat and two supporting bodies which are symmetrically arranged left and right, wherein the two supporting bodies are rotationally connected to the left side and the right side of the supporting seat, and a telescopic supporting assembly is arranged between each supporting body and the supporting seat; the support bodies have a flat-laid state and a vertical state, and the telescopic support assembly is configured to adapt to rotation of the two support bodies and provide support in the flat-laid state and the vertical state respectively; when the two supporting bodies are in a flat state, the two supporting bodies jointly form a sitting supporting surface for a user to sit flat; when the two supporting bodies are switched from a flat state to a vertical state, the two supporting bodies turn upwards and are close to each other to form a riding supporting surface for a user to ride.

2. The support mechanism for a seat chair of claim 1 wherein: the support body has near the end and marginal end, and the end that is close to of two support bodies is located the middle part of supporting seat and is adjacent each other, and the support body is in the tiling state down, and the marginal end of two support bodies is kept away from and is located the left and right sides respectively, when switching to vertical state by the tiling state, and two support bodies upset and two marginal ends are close to each other when upwards rotating.

3. The support mechanism for a seat chair of claim 1 wherein: the front end part and the rear end part of the supporting seat are respectively provided with a first rotating seat which is vertically arranged and bilaterally symmetrical, and the supporting body is rotatably arranged on the first rotating seat; the left end and the right end of the supporting seat are symmetrically provided with second rotating seats, the second rotating seats extend upwards and outwards, and the telescopic supporting assembly is rotationally connected with the second rotating seats.

4. The support mechanism for a seat chair of claim 1 wherein: the support body comprises a main body part and an ear part, wherein the ear part is positioned on the side edge of the main body part and forms an included angle with the main body part, and when the support body is in a flat state, the main body part is horizontal and the ear part sags; when the support body is in a vertical state, the main body part is vertical, the ears are horizontal, and the two ears are mutually attached together.

5. The support mechanism for a seat chair of claim 1 wherein: the support body is provided with a switch for unlocking or locking the telescopic support assembly.

6. The support mechanism for a seat chair of claim 1 wherein: the telescopic support component is an air rod.

7. A seat, characterized in that: the chair comprises a back support, a chair back component, armrests and a supporting mechanism of the sitting and standing chair according to any one of claims 1-6, wherein the back support is vertically arranged, the lower part of the back support is connected with the supporting seat, the chair back component and the armrests are slidably arranged on the back support and are linked with the supporting body through a hinging rod, the armrests are configured to support arms of a human body, and the chair back component is configured to support waists and backs of the human body; when the support body is switched from the flat state to the vertical state, the armrest and the chair back assembly rise along with the armrest, and when the support body is switched from the vertical state to the flat state, the armrest and the chair back assembly descend along with the armrest.

8. The seat according to claim 7, wherein: the chair also comprises a lifting seat, wherein the lifting seat is arranged on the back support in a sliding manner, and the armrests and the chair back component are arranged on the lifting seat; the back support comprises a lifting frame, the lifting frame is arranged inside the back support, the lifting seat is arranged on the lifting frame in a sliding mode, a sleeve is arranged between the lifting seat and the lifting frame, the sleeve is sleeved on the lifting frame, and the lifting seat is connected to the sleeve.

9. The seat according to claim 8, wherein: the lifting seat comprises a connecting plate, one end of the hinging rod is hinged to the connecting plate, and the other end of the hinging rod is hinged to the rear end part of the supporting body; the sleeve extends forwards and is provided with a fixing plate, and the connecting plate is connected with the sleeve through the fixing plate.

10. The seat according to claim 8, wherein: the lifting seat comprises two vertical rods, a bushing is clamped in the bushing, the bushing is located between the bushing and the vertical rods, a plurality of vertical raised strips are arranged on the inner surface of the bushing, and the raised strips are configured to reduce the friction area of the bushing and the vertical rods.