CN112263105A

CN112263105A - Chair capable of correcting sitting posture and preventing humpback

Info

Publication number: CN112263105A
Application number: CN202011198773.7A
Authority: CN
Inventors: 王建辉
Original assignee: Jiangxi Yangmeixin Honesty Industry Group Co ltd
Current assignee: Jiangxi Yangmeixin Honesty Industry Group Co ltd
Priority date: 2020-10-31
Filing date: 2020-10-31
Publication date: 2021-01-26
Anticipated expiration: 2040-10-31
Also published as: CN112263105B

Abstract

The invention relates to a chair, in particular to a chair capable of correcting sitting postures and preventing humpback. Provides a chair which can automatically massage the waist of people and can adjust the height of the armrest to correct sitting posture and prevent humpback. The chair capable of correcting sitting postures and preventing humpback comprises a fixing frame and a supporting plate, wherein the supporting plate is arranged on one side of the top of the fixing frame; the upper part of the fixing frame is provided with a driving mechanism; the driving mechanism is provided with a first sliding plate; the lower part of one side of the supporting plate is provided with the arc-shaped soft cushion; and the correcting mechanism is arranged between one side of the supporting plate and the driving mechanism. Through actuating mechanism and correction mechanism cooperation, can correct people's position of sitting when people sit on first sliding plate, prevent that people from the phenomenon of hunchback from appearing, through slide mechanism, can provide the position of putting one's hand aside for people to can its height of automatically regulated.

Description

Chair capable of correcting sitting posture and preventing humpback

Technical Field

The invention relates to a chair, in particular to a chair capable of correcting sitting postures and preventing humpback.

Background

The chair is common furniture in our daily life, a thing to sit on that has back and handrail, and modern chair pursues pleasing to the eye fashion, still gives the chair more science and technology for people's more convenient use, when people sit, the lumbar vertebrae bears the pressure very big, if the position of sitting is incorrect, can bring the injury to the vertebra, causes the problem of multiple shoulder neck and lumbar vertebrae.

The existing chair does not have the function of helping people to correct sitting postures, when people sit for too long time, the phenomenon of hunchback can occur due to fatigue of the body, so that the habit that the sitting postures of people are incorrect is met, the armrests of the existing chair are fixed, the chair cannot be adjusted according to different requirements of people, and the chair capable of automatically massaging the waist of people and adjusting the height of the armrests to prevent hunchback is designed aiming at the problems.

Disclosure of Invention

In order to overcome the defects that the existing chair can not help people to correct sitting postures and the armrests can not be adjusted according to different requirements of people, the invention has the technical problems that: provides a chair which can automatically massage the waist of people and can adjust the height of the armrest to correct sitting posture and prevent humpback.

A chair capable of correcting sitting posture and preventing humpback comprises:

the supporting plate is arranged on one side of the top of the fixing frame;

the upper part of the fixing frame is provided with a driving mechanism;

the driving mechanism is provided with a first sliding plate;

the lower part of one side of the supporting plate is provided with the arc-shaped soft cushion;

and the correcting mechanism is arranged between one side of the supporting plate and the driving mechanism.

Further, the driving mechanism includes:

two first guide rods are arranged on two sides of the top of the fixing frame in a sliding mode, and the tops of the first guide rods are connected with the first sliding plate;

the first springs are arranged between the two sides of the bottom of the first sliding plate and the top of the fixed frame and are sleeved outside the first guide rods on the same side;

a first fixing plate is arranged between the bottoms of the first guide rods;

the U-shaped fixing block is arranged on one side of the upper part of the fixing frame;

the swing rod is rotatably arranged on one side of the lower part of the U-shaped fixed block and matched with the first fixed plate;

and a second spring is arranged between one side of the bottom of the oscillating bar and one side of the top of the U-shaped fixed block.

Further illustratively, the orthotic device includes:

the middle of one side of the supporting plate is provided with first fixing blocks in an up-down symmetrical manner;

the toothed sliding plates are arranged between the first fixed blocks in a sliding mode and are matched with the swing rods;

the two sides of the upper part of the supporting plate are provided with first rotating shafts;

the first column gears are arranged on the first rotating shafts and are meshed with the toothed sliding plates;

the arc-shaped fixing rods are arranged on the first column gears.

Further, the device also comprises a sliding mechanism, wherein the sliding mechanism comprises:

the lower parts of the two sides of the supporting plate are respectively provided with a second fixed block;

the inner sides of the tops of the second fixed blocks are provided with guide blocks;

a second sliding plate is arranged between the guide blocks in a sliding manner;

the upper parts of the two sides of the supporting plate are respectively provided with a third fixed block;

the inner sides of the third fixed blocks are both provided with ratchet bars in a sliding way, and the ratchet bars are matched with the second sliding plate;

two third springs are arranged between the upper part of the outer side of the ratchet bar and the inner side of a third fixed block on the same side;

the outer sides of the tops of the ejector rods and the second fixed block are respectively rotatably provided with the ejector rods, and the ejector rods are matched with the ratchet bars;

the handles are arranged on the outer sides of the tops of the push rods;

a fourth fixed block is arranged at the lower part of one side of the first fixed block at the lower side;

articulated frame, fourth fixed block upper portion rotary type are equipped with articulated frame, and the ejector pin bottom outside all is connected with articulated frame rotary type.

Further explaining, still including massage mechanism, massage mechanism includes:

the lower part of the fixing frame is provided with the hydraulic tank;

the middle of the top of the hydraulic tank is provided with a telescopic rod, and the telescopic rod is matched with the first fixing plate;

the hose is arranged on one side of the hydraulic tank;

the side part of the hose is provided with a hollow box;

the middle part of one side of the fixing frame is provided with a reduction box;

the reduction gearbox is rotatably provided with a second rotating shaft, and the second rotating shaft is rotatably connected with one side of the hollow box;

one end of the second rotating shaft is provided with a fan blade which is positioned in the hollow box;

the lower part of one side of the supporting plate is rotatably provided with a third rotating shaft;

the first transmission assembly is arranged between the side part of the third rotating shaft and the side part of the second rotating shaft;

second column gears are arranged on two sides of the third rotating shaft;

the middle of the lower part of the supporting plate is rotatably provided with a fourth rotating shaft;

third cylindrical gears are uniformly arranged on the fourth rotating shaft, and the third cylindrical gears on the two sides are meshed with the adjacent second cylindrical gears;

the third column gear is provided with a first magnet;

the arc plate is arranged on one side of the lower part of the supporting plate;

the second guide rods are uniformly arranged on one side of the arc-shaped plate;

massage balls for massaging people are arranged on the second guide rods in a sliding manner;

a fourth spring is arranged between one side of the massage ball and one side of the arc-shaped plate;

the pull ropes are arranged on one sides of the massage balls, and the other ends of the pull ropes penetrate through one sides of the arc-shaped plates;

the other end of the pull rope is provided with a second magnet which is matched with the first magnet.

Further explaining, still including speed adjusting device, debugging device includes:

a fifth fixed block is arranged on one side of the hydraulic tank;

a fifth rotating shaft is arranged at the upper part of the fifth fixing block in a sliding manner;

the fifth rotating shaft is provided with a speed regulating wheel.

Further, the device also comprises a buffer device, and the buffer device comprises:

the two sides of the bottom of the fixing frame are provided with the sixth fixing blocks;

the hinge rods are arranged on the sixth fixing block;

the rubber block all is equipped with the rubber block on the hinge bar.

Further, the hinge rod is cylindrical in shape.

The invention has the beneficial effects that: 1. through actuating mechanism and correction mechanism cooperation, can correct people's position of sitting when people sit on first sliding plate, prevent that people from the phenomenon of hunchback.

2. Through the sliding mechanism, a hand-free position can be provided for people, and the height of the hand-free position can be automatically adjusted.

3. Through the massage mechanism, people's waist can be beaten the massage automatically, reduces people's sense of fatigue.

4. The frequency of knocking and massaging the waist of the person by the massage balls can be controlled by the speed regulating device.

5. Through buffer, can increase the frictional force between mount and the ground.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a schematic perspective view of a second embodiment of the present invention.

Fig. 3 is a schematic perspective view of the driving mechanism of the present invention.

Fig. 4 is a schematic perspective view of the straightening mechanism of the present invention.

Fig. 5 is a schematic perspective view of the sliding mechanism of the present invention.

Fig. 6 is a schematic partial perspective view of a first massage mechanism of the present invention.

Fig. 7 is a schematic partial perspective view of a second massage mechanism of the present invention.

Fig. 8 is a schematic perspective view of the governor of the present invention.

Fig. 9 is a schematic perspective view of a buffering device according to the present invention.

Fig. 10 is an enlarged schematic view of part a of the present invention.

Reference numbers in the drawings: 1: mount, 2: support plate, 3: first sliding plate, 4: arc cushion, 5: drive mechanism, 51: first guide bar, 52: first spring, 53: first fixing plate, 54: u-shaped fixing block, 55: swing link, 56: second spring, 6: corrective mechanism, 61: first fixing block, 62: toothed sliding plate, 63: first rotating shaft, 64: first column gear, 65: arc dead lever, 7: sliding mechanism, 71: second fixed block, 72: guide block, 73: second slide plate, 74: ratchet bar, 75: third fixed block, 76: third spring, 77: ejector rod, 78: grip, 79: fourth fixed block, 710: hinge bracket, 8: massage mechanism, 81: hydraulic tank, 82: telescopic rod, 83: hose, 84: hollow box, 85: second rotating shaft, 86: fan blade, 87: reduction gearbox, 88: third rotating shaft, 89: first transmission assembly, 810: second column gear, 811: fourth rotation shaft, 812: third spur gear, 813: first magnet, 814: arc plate, 815: second guide bar, 816: massage ball, 817: fourth spring, 818: a pull cord, 819: second magnet, 9: speed adjusting device, 91: fifth fixing block, 92: fifth rotation shaft, 93: flywheel, 10: buffer device, 101: sixth fixed block, 102: hinge rod, 103: a rubber block.

Detailed Description

The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.

Example 1

The utility model provides a can correct position of sitting and prevent chair of bow-backed, as shown in fig. 1 and fig. 2, including mount 1, backup pad 2, first sliding plate 3, arc cushion 4, actuating mechanism 5 and aligning gear 6, mount 1 top rear side is equipped with backup pad 2, 1 upper portion of mount is equipped with actuating mechanism 5, the last first sliding plate 3 that is equipped with of

actuating mechanism

5, 2 front side lower parts of backup pad are equipped with arc cushion 4, be equipped with aligning gear 6 between 2 rear sides of backup pad and the actuating mechanism 5.

People sit on first sliding plate 3, lean against backup pad 2, under the effect of arc cushion 4, prevent people's hunchback, first sliding plate 3 down moves simultaneously, first sliding plate 3 drives actuating mechanism 5 operation, actuating mechanism 5 drives the operation of correction mechanism 6, make correction mechanism 6 correct people's position of sitting, when people left first sliding plate 3, actuating mechanism 5 drives first sliding plate 3 up and moves and resets, actuating mechanism 5 and correction mechanism 6 reconversion.

Example 2

On the basis of embodiment 1, as shown in fig. 3, 4, 5 and 10, the driving mechanism 5 includes a first guide rod 51, a first spring 52, the fixing frame comprises a first fixing plate 53, a U-shaped fixing block 54, a swing rod 55 and a second spring 56, wherein the left side and the right side of the top of the fixing frame 1 are provided with two first guide rods 51 in a sliding mode, the top of each first guide rod 51 is connected with the first sliding plate 3, first springs 52 are arranged between the front side and the rear side of the left side and the right side of the bottom of the first sliding plate 3 and the top of the fixing frame 1, the first springs 52 are sleeved on the outer sides of the first guide rods 51 on the same side, the first fixing plate 53 is arranged between the bottoms of the first guide rods 51, the U-shaped fixing block 54 is arranged on the rear side of the upper portion of the fixing frame 1, the swing rod 55 is arranged on the rear side of the lower portion of the U-shaped fixing block 54 in a rotating mode.

When a person sits on the first sliding plate 3, the first sliding plate 3 moves downwards, the first spring 52 is compressed, the first sliding plate 3 drives the first guide rod 51 and the first fixing plate 53 to move downwards, when the first fixing plate 53 contacts with the swing rod 55, the swing rod 55 is driven to rotate, the rear part of the swing rod 55 rotates upwards, the second spring 56 is compressed, the correcting mechanism 6 is driven to correct the sitting posture of the person, when the person leaves the first sliding plate 3, the first spring 52 restores to the original state, under the action of the first spring 52, the first sliding plate 3, the first guide rod 51 and the first fixing plate 53 are driven to move upwards to restore to the original state, at the moment, the first fixing plate 53 is separated from the swing rod 55, the second spring 56 restores to the original state, under the action of the second spring 56, the swing rod 55 is driven to rotate to restore, and the swing rod 55 drives the correcting mechanism 6 to restore to the original state.

The correcting mechanism 6 comprises a first fixing block 61, a toothed sliding plate 62, a first rotating shaft 63, a first column gear 64 and an arc-shaped fixing rod 65, wherein the first fixing block 61 is symmetrically arranged in the middle of the rear side of the supporting plate 2 up and down, the toothed sliding plate 62 is slidably arranged between the first fixing blocks 61, the toothed sliding plate 62 is matched with the oscillating rod 55, the first rotating shaft 63 is arranged on each of the left side and the right side of the upper portion of the supporting plate 2, the first column gear 64 is arranged on each first rotating shaft 63, the first column gear 64 is meshed with the toothed sliding plate 62, and the arc-shaped fixing rod 65 is arranged on each first column gear 64.

When the rear part of the swing rod 55 rotates upwards to be in contact with the toothed sliding plate 62, the toothed sliding plate 62 is driven to move upwards, the toothed sliding plate 62 drives the first column gear 64 to rotate, the first column gear 64 drives the arc-shaped fixing rod 65 to rotate downwards, the arc-shaped fixing rod 65 can be put on shoulders of people to help people to correct sitting postures, when people slowly rise, the swing rod 55 can rotate to reset, at the moment, the swing rod 55 is separated from the toothed sliding plate 62, the shoulders of people drive the arc-shaped fixing rod 65 to rotate upwards to reset, the arc-shaped fixing rod 65 drives the first column gear 64 to rotate to reset, and the first column gear 64 drives the toothed sliding plate 62 to move downwards to reset.

The sliding mechanism 7 comprises a second fixed block 71, a guide block 72, a second sliding plate 73, a ratchet bar 74, a third fixed block 75, a third spring 76, a top rod 77, a handle 78, a fourth fixed block 79 and a hinge bracket 710, wherein the second fixed block 71 is arranged at the lower part of the left side and the right side of the support plate 2, the guide block 72 is arranged at the inner side of the top part of the second fixed block 71, the second sliding plate 73 is arranged between the guide blocks 72 in a sliding manner, the third fixed block 75 is arranged at the upper part of the left side and the right side of the support plate 2, the ratchet bar 74 is arranged at the inner side of the third fixed block 75 in a sliding manner, the ratchet bar 74 is matched with the second sliding plate 73, two third springs 76 are arranged between the upper part of the outer side of the ratchet bar 74 and the inner side of the third fixed block 75 at the same side, the top part of the second fixed block 71 is provided, the lower part of the rear side of the first fixing block 61 on the lower side is provided with a fourth fixing block 79, the upper part of the fourth fixing block 79 is rotatably provided with a hinge bracket 710, and the outer side of the bottom of the ejector rod 77 is rotatably connected with the hinge bracket 710.

When a person sits on the first sliding plate 3, and wants to hold the arm, the grip 78 on one side is manually held, then the handle 78 is rotated, the handle 78 drives the top rod 77 at one side to rotate, the handle 78 and the top rod 77 at the other side are driven to rotate through the hinge bracket 710, so that the top rod 77 is separated from the ratchet bar 74, at this time, the third spring 76 is restored to the original state, under the action of the third spring 76, the ratchet bar 74 is driven to move outwards, so that the ratchet bar 74 is separated from the second sliding plate 73, then the second sliding plate 73 can be pulled upwards, when the second sliding plate 73 moves to the designated position, the handle 78 is rotated and reset, the handle 78 drives the mandril 77 at one side to rotate and reset, the handle 78 and the push rod 77 on the other side are driven by the hinge bracket 710 to rotate and reset, the push rod 77 drives the ratchet bar 74 to move inwards and reset, and the ratchet bar 74 and the guide block 72 fix the second sliding plate 73.

Example 3

Based on the embodiment 2, as shown in fig. 6, 7, 8 and 9, the massage apparatus further includes a massage mechanism 8, the massage mechanism 8 includes a hydraulic tank 81, an expansion link 82, a hose 83, a hollow tank 84, a second rotating shaft 85, a fan blade 86, a reduction box 87, a third rotating shaft 88, a first transmission assembly 89, a second transmission assembly 810, a fourth rotating shaft 811, a third transmission assembly 812, a first magnet 813, an arc-shaped plate 814, a second guide bar 815, a massage ball 816, a fourth spring 817, a pull rope 818 and a second magnet 819, the hydraulic tank 81 is disposed at the lower portion of the fixing frame 1, the expansion link 82 is disposed in the middle of the top of the hydraulic tank 81, the expansion link 82 is engaged with the first fixing plate 53, the hose 83 is disposed at the rear side of the hydraulic tank 81, the hollow tank 84 is disposed at the right portion of the hose 83, the reduction box 87 is disposed at the right side of the rear side of the fixing frame 1, the second rotating shaft 85 is disposed on the reduction, the left end of the second rotating shaft 85 is provided with a fan blade 86, the fan blade 86 is positioned in the hollow box 84, the lower part of the rear side of the support plate 2 is rotatably provided with a third rotating shaft 88, a first transmission component 89 is arranged between the right part of the third rotating shaft 88 and the right part of the second rotating shaft 85, the left side and the right side of the third rotating shaft 88 are both provided with second column gears 810, the middle of the lower part of the support plate 2 is rotatably provided with a fourth rotating shaft 811, the fourth rotating shaft 811 is uniformly provided with third column gears 812, the third column gears 812 at the left side and the right side are both engaged with the adjacent second column gears 810, the third column gears 812 are both provided with first magnets 813, the front side of the lower part of the support plate 2 is provided with an arc-shaped plate 814, the front side of the arc-shaped plate 814 is uniformly provided with a second guide rod 815, the second guide rod 815 is both slidably provided with a massage ball 816, a fourth spring 817 is arranged between the rear side of the massage ball 816, the other end of the pull cord 818 is provided with a second magnet 819, the second magnet 819 cooperating with the first magnet 813.

When people sit on the first sliding plate 3, the first fixing plate 53 is driven to move downwards, when the first fixing plate 53 contacts with the telescopic rod 82, the telescopic rod 82 is driven to move downwards, so that the hydraulic tank 81 is opened, because the left side and the right side of the rear side of the hydraulic tank 81 are both provided with the one-way valves, water in the hydraulic tank 81 moves backwards from the right part of the hose 83, the water drives the fan blade 86 to rotate, the fan blade 86 drives the second rotating shaft 85 to rotate, under the action of the reduction gearbox 87, the rotating speed of the second rotating shaft 85 is reduced, the second rotating shaft 85 drives the third rotating shaft 88 and the second column gear 810 to rotate through the first transmission assembly 89, the second column gear 810 drives the fourth rotating shaft 811 and the third column gear 812 to rotate, the third column gear 812 drives the first magnet 813 to rotate, when the first magnet 813 is close to the second magnet 819, the second magnet 819 is driven to move downwards, the massage ball 816 is driven to move backwards through the pull rope 818, the compression of fourth spring 817, when first magnet 813 is kept away from with second magnet 819, fourth spring 817 reconversion, under fourth spring 817's effect, it resets to drive massage ball 816 forward motion, massage ball 816 beats the massage to people's waist, massage ball 816 drives second magnet 819 through stay cord 818 and moves upward and resets, water gets back to in the hydraulic tank 81 from the left part through hose 83, when people leave first sliding plate 3, it resets to drive first fixed plate 53 and move upward, first fixed plate 53 separates with telescopic link 82 this moment, telescopic link 82 moves upward and resets, thereby close hydraulic tank 81, above-mentioned rotation all stops.

The hydraulic pressure adjusting device is characterized by further comprising a speed adjusting device 9, the debugging device comprises a fifth fixing block 91, a fifth rotating shaft 92 and a speed adjusting wheel 93, the fifth fixing block 91 is arranged on the right portion of the rear side of the hydraulic tank 81, the fifth rotating shaft 92 is arranged on the upper portion of the fifth fixing block 91 in a sliding mode, and the speed adjusting wheel 93 is arranged on the fifth rotating shaft 92.

When people sit on the first sliding plate 3, the massage ball 816 beats the massage to people's waist, then can slide the fifth rotating shaft 92 backward, the fifth rotating shaft 92 drives the velocity modulation wheel 93 and move backward, when the velocity modulation wheel 93 contacts with the hose 83, extrude the hose 83, thereby reduce the flow of water, thereby slow down the rotational speed of the second rotating shaft 85, and then slow down the frequency that the massage ball 816 beats the massage to people, when people leave the first sliding plate 3, the fifth rotating shaft 92 that slides forward resets, the fifth rotating shaft 92 drives the velocity modulation wheel 93 and moves forward and resets, when the velocity modulation wheel 93 separates with the hose 83, the hose 83 restores to the original state.

Still including buffer 10, buffer 10 is including sixth fixed block 101, articulated rod 102 and block rubber 103, and both sides all are equipped with sixth fixed block 101 around the 1 bottom left and right sides of mount, all are equipped with articulated rod 102 on the sixth fixed block 101, all are equipped with block rubber 103 on the articulated rod 102.

The rubber block 103 contacts with the ground to increase the friction between the fixing frame 1 and the ground.

Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims

1. A chair capable of correcting sitting posture and preventing humpback is characterized by comprising:

the fixing frame (1) and the supporting plate (2), wherein the supporting plate (2) is arranged on one side of the top of the fixing frame (1);

the driving mechanism (5) is arranged at the upper part of the fixed frame (1);

the first sliding plate (3) is arranged on the driving mechanism (5);

the lower part of one side of the supporting plate (2) is provided with the arc soft cushion (4);

the correcting mechanism (6) is arranged between one side of the supporting plate (2) and the driving mechanism (5).

2. A chair for correcting sitting posture and preventing kyphosis as claimed in claim 1, wherein the driving mechanism (5) comprises:

two first guide rods (51) are arranged on two sides of the top of the fixed frame (1) in a sliding mode, and the tops of the first guide rods (51) are connected with the first sliding plate (3);

the first springs (52) are arranged between the two sides of the bottom of the first sliding plate (3) and the top of the fixed frame (1), and the first springs (52) are sleeved on the outer sides of the first guide rods (51) on the same side;

a first fixing plate (53), wherein the first fixing plate (53) is arranged between the bottoms of the first guide rods (51);

a U-shaped fixing block (54), wherein the U-shaped fixing block (54) is arranged on one side of the upper part of the fixing frame (1);

the swing rod (55) is rotatably arranged on one side of the lower part of the U-shaped fixing block (54), and the swing rod (55) is matched with the first fixing plate (53);

and a second spring (56) is arranged between one side of the bottom of the swing rod (55) and one side of the top of the U-shaped fixed block (54).

3. A chair for correcting sitting posture and preventing kyphosis according to claim 2, wherein the correcting means (6) comprises:

the middle of one side of the supporting plate (2) is provided with the first fixing block (61) in an up-down symmetrical mode; the toothed sliding plates (62) are arranged between the first fixed blocks (61) in a sliding mode, and the toothed sliding plates (62) are matched with the swing rods (55);

the two sides of the upper part of the supporting plate (2) are provided with first rotating shafts (63);

the first column gears (64) are arranged on the first rotating shafts (63), and the first column gears (64) are meshed with the toothed sliding plates (62);

the arc-shaped fixing rods (65) are arranged on the first column gears (64).

4. A chair for correcting sitting posture and preventing kyphosis as claimed in claim 3, further comprising a sliding mechanism (7), wherein the sliding mechanism (7) comprises:

the lower parts of two sides of the supporting plate (2) are respectively provided with a second fixed block (71);

the guide blocks (72) are arranged on the inner sides of the tops of the second fixed blocks (71);

a second sliding plate (73), wherein the second sliding plate (73) is arranged between the guide blocks (72) in a sliding way;

the upper parts of two sides of the supporting plate (2) are respectively provided with a third fixing block (75);

the inner sides of the ratchet bars (74) are respectively provided with the ratchet bars (74) in a sliding manner, and the ratchet bars (74) are matched with the second sliding plate (73);

two third springs (76) are arranged between the upper part of the outer side of the ratchet bar (74) and the inner side of the third fixed block (75) on the same side;

the ejector rods (77) are rotatably arranged on the outer sides of the tops of the second fixing blocks (71), and the ejector rods (77) are matched with the ratchet bars (74);

the handles (78) are arranged on the outer sides of the tops of the push rods (77);

a fourth fixed block (79), wherein the lower part of one side of the first fixed block (61) at the lower side is provided with the fourth fixed block (79); the upper parts of the hinged frame (710) and the fourth fixed block (79) are rotatably provided with the hinged frame (710), and the outer side of the bottom of the ejector rod (77) is rotatably connected with the hinged frame (710).

5. The chair capable of correcting the sitting posture and preventing the humpback as claimed in claim 4, further comprising a massage mechanism (8), wherein the massage mechanism (8) comprises:

the hydraulic tank (81) is arranged at the lower part of the fixing frame (1);

the middle of the top of the hydraulic tank (81) is provided with an expansion link (82), and the expansion link (82) is matched with the first fixing plate (53);

the hose (83) is arranged on one side of the hydraulic tank (81);

the side part of the hose (83) is provided with the hollow box (84);

the reduction gearbox (87) is arranged in the middle of one side of the fixing frame (1);

the reduction box (87) is rotatably provided with a second rotating shaft (85), and the second rotating shaft (85) is rotatably connected with one side of the hollow box (84);

one end of the second rotating shaft (85) is provided with a fan blade (86), and the fan blade (86) is positioned inside the hollow box (84);

a third rotating shaft (88), wherein the lower part of one side of the supporting plate (2) is rotatably provided with the third rotating shaft (88);

a first transmission assembly (89), wherein a first transmission assembly (89) is arranged between the side part of the third rotating shaft (88) and the side part of the second rotating shaft (85);

second column gears (810) are arranged on the two sides of the third rotating shaft (88);

a fourth rotating shaft (811), wherein the middle of the lower part of the supporting plate (2) is rotatably provided with the fourth rotating shaft (811);

the third cylindrical gears (812) are uniformly arranged on the fourth rotating shaft (811), and the third cylindrical gears (812) on the two sides are meshed with the adjacent second cylindrical gears (810);

the first magnets (813) are arranged on the third column gear (812), and the first magnets (813) are arranged on the third column gear;

the arc plate (814) is arranged on one side of the lower part of the support plate (2);

the second guide rods (815) are uniformly arranged on one side of the arc-shaped plate (814);

the massage balls (816) for massaging people are arranged on the second guide rod (815) in a sliding manner;

a fourth spring (817), wherein the fourth spring (817) is arranged between one side of the massage ball (816) and one side of the arc-shaped plate (814);

the pulling ropes (818) are arranged on one sides of the massage balls (816), and the other ends of the pulling ropes (818) penetrate through one sides of the arc-shaped plates (814);

the other end of the pull rope (818) is provided with a second magnet (819), and the second magnet (819) is matched with the first magnet (813).

6. The chair capable of correcting sitting posture and preventing humpback as claimed in claim 5, further comprising a speed-adjusting device (9), wherein the adjusting device comprises:

a fifth fixing block (91), wherein the fifth fixing block (91) is arranged on one side of the hydraulic tank (81);

a fifth rotating shaft (92), wherein the upper part of the fifth fixing block (91) is provided with the fifth rotating shaft (92) in a sliding manner;

the speed regulating wheel (93) is arranged on the fifth rotating shaft (92).

7. The chair capable of correcting the sitting posture and preventing the humpback as claimed in claim 6, further comprising a cushioning device (10), wherein the cushioning device (10) comprises:

the fixing frame comprises a sixth fixing block (101), wherein the sixth fixing block (101) is arranged on two sides of the bottom of the fixing frame (1);

the hinge rods (102) are arranged on the sixth fixing block (101);

the rubber block (103) is arranged on each hinged rod (102).

8. The chair capable of correcting sitting posture to prevent kyphosis as claimed in claim 7, wherein the shape of the hinge rod (102) is cylindrical.