CN112998413A

CN112998413A - Tablet chair suitable for students with different heights

Info

Publication number: CN112998413A
Application number: CN202110508401.8A
Authority: CN
Inventors: 马志红; 谢飞良; 徐升; 饶振杰
Original assignee: Jiangxi Nancheng County Fahua Industry Co ltd
Current assignee: Huzhou Changyuan Furniture Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-06-22
Anticipated expiration: 2041-05-11
Also published as: CN112998413B

Abstract

The invention relates to a tablet chair, in particular to a tablet chair suitable for students with different heights. The technical problem to be solved is as follows: provides a tablet chair with lifting function and suitable for students with different heights. The technical scheme is as follows: the utility model provides a tablet chair suitable for different height students, includes footing pipe, anticollision piece, fixed pipe, thick stay tube, thin stay tube and fixture block, and the symmetry is equipped with the footing pipe bottom fixed pipe bottom, and footing pipe both sides all are equipped with the anticollision piece, and footing pipe top one side all is equipped with thick stay tube, and thick stay tube is intraductal all to be equipped with thin stay tube by the slidingtype, and thick stay tube one side all is slided and is equipped with the fixture block. The school supplies can be placed through the arranged placing mechanism; students can directly sit on the cushion to adjust the height through the arranged speed reducing mechanism; the tablet chair is convenient to push to move through the arranged moving mechanism.

Description

Tablet chair suitable for students with different heights

Technical Field

The invention relates to a tablet chair, in particular to a tablet chair suitable for students with different heights.

Background

The student usually needs to study in the classroom when studying in school, in the in-process of studying, often need use the desk chair, at present, the tablet chair that most schools used, simple structure does not possess the function of going up and down, and student's height is different, and the requirement to the tablet chair height also is different, and when the student sits for a long time with the unmatched tablet chair of own height, easily brings unfavorable influence to student's healthy, also brought unfavorable influence to student's learning efficiency simultaneously.

Therefore, a tablet chair with a lifting function and suitable for students with different heights needs to be designed.

Disclosure of Invention

In order to overcome the defects that the existing desk and chair has simple structure and does not have the lifting function, the technical problem to be solved is that: provides a tablet chair with lifting function and suitable for students with different heights.

The technical scheme is as follows: the utility model provides a tablet chair suitable for different height students, including the footing pipe, anti-collision piece, fixed pipe, thick stay tube, thin supporting tube, the fixture block, magnet, the cushion, first return bend, the back, place mechanism and pedal mechanism, fixed socle portion symmetry is equipped with the footing pipe, footing pipe both sides all are equipped with anti-collision piece, footing pipe top one side all is equipped with thick stay tube, thick stay tube is intraductal all to be slided and is equipped with thin supporting tube, thick stay tube one side all is slided and is equipped with the fixture block, the fixture block cooperates with thin supporting tube, the fixture block inboard all is equipped with magnet, be connected with the cushion between the thin supporting tube top, cushion one side symmetry is equipped with first return bend, be connected with the back between the first return bend top, be connected with between first return bend upper portion and place the mechanism, be connected with pedal mechanism between footing pipe and the thick stay tube.

As a further preferred scheme, the placing mechanism comprises a second bent pipe, a placing plate and a book end, the second bent pipe is connected between the upper sides of the first bent pipes in a sliding mode, the placing plate is arranged at one end of the second bent pipe in a rotating mode, a placing groove is formed in one side of the placing plate, the book end is arranged on one side of the placing plate in a rotating mode, and an elastic piece is connected between the book end and the placing plate.

As further preferred scheme, pedal mechanism is including the third return bend, torsion spring, the running-board, the wedge connecting block, first projection and second spring, the rotary type is connected with the third return bend between footing pipe one side, all be connected with torsion spring between third return bend and the footing pipe, third return bend one side middle part rotary type is equipped with the running-board, third return bend middle part symmetry is opened has first spout, thick stay tube one side all slidingtype is equipped with the wedge connecting block, the wedge connecting block can cooperate with the fixture block, wedge connecting block and first spout cooperation, thick stay tube one side lower part all slidingtype is equipped with first projection, all be connected with the second spring between first projection and the adjacent thick stay tube.

As further preferred scheme, still including reduction gears, reduction gears is including the piston pipe, the piston rod, the rubber head, the third spring, first pipe, second pipe and fourth spring, fixed pipe top symmetry is equipped with first pipe, all slidingtype is equipped with the second pipe in the first pipe, the second pipe all links to each other with the cushion, all be connected with the fourth spring between cushion and the first pipe, all be equipped with the piston rod in the thick stay tube, the piston rod all passes the footing pipe, all slidingtype is equipped with the piston pipe on the piston rod, all be connected with the third spring between piston pipe and the adjacent piston rod, the piston rod top all is equipped with the rubber head.

As further preferred scheme, still including moving mechanism, moving mechanism is including turning to the ball subassembly, the wheel, the fixed block, the brake block, the fifth spring, dial board and second projection, footing pipe one side all is equipped with turns to the ball subassembly, it has shell and universal ball to constitute to turn to the ball subassembly, the shell is established on the footing pipe, universal ball rotary type is established in the shell, footing pipe one side equal rotary type is equipped with the wheel, one side all is equipped with the fixed block in the footing pipe, it is equipped with the brake block all to slide on the fixed block, all be connected with the fifth spring between brake block and the adjacent fixed block, the brake block inboard all is equipped with the second projection, third return bend one side all is equipped with dials the board, dial board and second projection cooperation.

As a further preferred scheme, the self-cleaning mechanism comprises a first mounting block, a pipe, a one-way valve, a spray head and a second mounting block, wherein the first mounting block is arranged on one side in the footing tube and located on one side of the fixed block, the pipe is arranged in the first mounting block and communicated with the piston rod, the one-way valve is arranged on one side of the pipe, the second mounting block is arranged on one side in the footing tube and located on one side of the first mounting block, the pipe penetrates through the second mounting block on the same side, and the spray head is arranged at one end of the pipe.

As a further preferred scheme, the bending device further comprises an adjusting mechanism, the adjusting mechanism comprises a clamping column, a gasket and an eccentric handle, a second sliding groove is formed in the upper portion of the first bent pipe, the clamping column is arranged in the second sliding groove in a sliding mode, the eccentric handle is arranged on one side of the clamping column in a rotating mode, and the gasket is arranged on one side of the clamping column in a sliding mode.

As a further preferable mode, the gasket is a rubber sheet.

The invention achieves the following effects: the school supplies can be placed through the arranged placing mechanism; students can directly sit on the cushion to adjust the height through the arranged speed reducing mechanism; the tablet chair is convenient to push to move through the arranged moving mechanism; sundries on the wheel can be blown away through the arranged self-cleaning mechanism, so that the effect that the brake block clamps the wheel is prevented from being influenced by the sundries; the height of the placing plate can be conveniently adjusted by the aid of the adjusting mechanism.

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 third perspective view of the present invention.

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

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

Fig. 6 is a perspective view of the footrest mechanism of the present invention.

Fig. 7 is a perspective view of the footrest mechanism of the present invention.

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

Fig. 9 is a schematic perspective view of the reduction mechanism of the present invention.

Fig. 10 is a schematic perspective view of the moving mechanism of the present invention.

Fig. 11 is a schematic perspective view of the self-cleaning mechanism of the present invention.

Fig. 12 is a schematic perspective view of the adjusting mechanism of the present invention.

The parts are labeled as follows: 1. a bottom foot tube, 2, an anti-collision block, 3, a fixed tube, 4, a thick support tube, 5, a thin support tube, 6, a clamping block, 7, a magnet, 8, a cushion, 9, a first bent tube, 10, a backrest, 11, a placing mechanism, 111, a second bent tube, 112, a placing plate, 113, a placing groove, 114, a book holder, 12, a pedal mechanism, 121, a third bent tube, 122, a torsion spring, 123, a pedal plate, 124, a wedge-shaped connecting block, 125, a first sliding groove, 126, a first convex column, 127, a second spring, 13, a speed reducing mechanism, 131, a piston tube, 132, a piston rod, 133, a rubber head, 134, a third spring, 135, a first circular tube, 136, a second circular tube, 137, a fourth spring, 14, a moving mechanism, 141, a steering ball component, 142, a wheel, 143, a fixed block, 144, a brake block, 145, a fifth spring, 146, a shifting plate, 147, a second self-cleaning mechanism, 151. the automatic adjusting device comprises a first mounting block, 152, a pipe, 153, a one-way valve, 154, a spray head, 155, a second mounting block, 16, an adjusting mechanism, 161, a clamping column, 162, a gasket, 163, an eccentric handle, 164 and a second sliding groove.

Detailed Description

The invention is further described below with reference to the figures and examples.

Example 1

A tablet chair suitable for students with different heights is disclosed, as shown in figures 1-7, and comprises a bottom leg tube 1, an anti-collision block 2, a fixed tube 3, a thick support tube 4, a thin support tube 5, a clamping block 6, a magnet 7, a cushion 8, a first bent tube 9, a backrest 10, a placing mechanism 11 and a pedal mechanism 12, wherein the bottom of the fixed tube 3 is symmetrically provided with the bottom leg tube 1 at the front and back, the anti-collision block 2 is arranged at the left and right sides of the bottom leg tube 1, the thick support tube 4 is arranged at the left side of the top of the bottom leg tube 1, the thin support tube 5 is arranged in the thick support tube 4 in a sliding manner, the clamping block 6 is arranged at the upper side of the thick support tube 4, the clamping block 6 is matched with the thin support tube 5, the magnet 7 is arranged at the inner side of the clamping block 6, the cushion 8 is connected between the tops of the thin support tubes 5, the first bent tube 9 is symmetrically arranged at the front and back at, a pedal mechanism 12 is connected between the foot tube 1 and the rough support tube 4.

The placing mechanism 11 comprises a second bent pipe 111, a placing plate 112 and a book end 114, the second bent pipe 111 is connected between the upper sides of the first bent pipes 9 in a sliding mode, the placing plate 112 is rotatably arranged at the right end of the second bent pipe 111, a placing groove 113 is formed in the front side of the placing plate 112, the book end 114 is rotatably arranged at the right side of the placing plate 112, and an elastic piece is connected between the book end 114 and the placing plate 112.

The pedal mechanism 12 includes a third elbow 121, a torsion spring 122, a pedal plate 123, a wedge-shaped connecting block 124, a first convex column 126 and a second spring 127, the third elbow 121 is rotatably connected between the left sides of the bottom leg pipes 1, the torsion spring 122 is connected between the third elbow 121 and the bottom leg pipes 1, the pedal plate 123 is rotatably arranged in the middle of the right side of the third elbow 121, first sliding grooves 125 are symmetrically formed in the middle of the third elbow 121 in the front-back direction, the wedge-shaped connecting block 124 is slidably arranged on the upper side of the thick supporting pipe 4, the wedge-shaped connecting block 124 can be matched with the clamping block 6, the wedge-shaped connecting block 124 is slidably matched with the first sliding grooves 125, the first convex column 126 is slidably arranged on the lower portion of the right side of the thick supporting pipe 4, and the second spring 127 is.

When a student needs to use the tablet chair, the student can select whether the height of the cushion 8 needs to be adjusted according to the height of the student, if the cushion 8 needs to be adjusted to move downwards, the cushion 8 can be pulled to move downwards, the cushion 8 moves downwards to drive the thin supporting tube 5 to move downwards in the thick supporting tube 4, when the cushion moves to a proper position, the third bent tube 121 can be rotated downwards towards the right, the third bent tube 121 rotates to drive the wedge-shaped connecting block 124 to move downwards, the torsion spring 122 deforms, the wedge-shaped connecting block 124 moves downwards to no longer block the magnet 7 and the clamping block 6, under the action of the magnetic force of the magnet 7, the thick supporting tube 4 can be adsorbed, so that the clamping block 6 can move inwards, the clamping block 6 moves inwards to clamp the thin supporting tube 5, at the moment, the position of the cushion 8 is fixed, if the position of the cushion 8 does not need to be adjusted, the third bent tube 121 can, the third bending pipe 121 rotates to contact with the first protruding column 126 and then rotates continuously, so that the first protruding column 126 moves inwards, the second spring 127 is stretched, after the third bending pipe 121 rotates to be separated from the first protruding column 126, the first protruding column 126 moves outwards under the action of the second spring 127, the force of the second spring 127 is larger than the force of the torsion spring 122, at this time, the third bending pipe 121 can be loosened, the third bending pipe 121 can be blocked by the first protruding column 126 and can not rotate back, then, a student can rotate the placing plate 112 to the front side, after sitting on the seat cushion 8, the placing plate 112 can rotate back, a pen can be placed in the placing groove 113, the book clamp 114 can be rotated first, the elastic piece deforms, a book is placed below the book clamp 114, the book clamp 114 is loosened, the book clamp can be rotated and reset under the effect of the elastic piece, and the book can be clamped tightly, at this time, the back of the student can lean against the backrest 10, the foot can be put on the running-board 123, can make running-board 123 rotate on third return bend 121 this moment, make the foot be flat and step on the state, the student just rotates book end 114 once more after the study finishes and takes out books, the student leaves from the tablet chair again, upwards rotate the return with third return bend 121 afterwards, torsion spring 122 resets, can make wedge-shaped connecting block 124 rebound this moment, thereby make fixture block 6 move to the outside, so can make next student be convenient for adjust the height of cushion 8 when needing to use, anticollision piece 2 can prevent that the student from being injured when playing this tablet chair.

Example 2

On the basis of embodiment 1, as shown in fig. 8 to 12, the device further includes a decelerating mechanism 13, the decelerating mechanism 13 includes a piston tube 131, a piston rod 132, a rubber head 133, a third spring 134, a first circular tube 135, a second circular tube 136 and a fourth spring 137, the first circular tube 135 is symmetrically arranged at the front and back of the top of the fixed tube 3, the second circular tube 136 is arranged in the first circular tube 135 in a sliding manner, the second circular tube 136 is connected with the seat cushion 8, the fourth spring 137 is connected between the seat cushion 8 and the first circular tube 135, the piston rod 132 is arranged in the thick supporting tube 4, the piston rod 132 passes through the bottom pin tube 1, the piston rod 132 is provided with the piston tube 131 in a sliding manner, the third spring 134 is connected between the piston tube 131 and the adjacent piston rod 132, and the rubber head 133 is arranged at the top of the piston rod 132.

The student can directly sit on the seat cushion 8, at this time, the seat cushion 8 and the thin supporting tube 5 can move downwards, the seat cushion 8 moves downwards to drive the second round tube 136 to move downwards, the fourth spring 137 is compressed, the seat cushion 8 moves downwards to drive the piston tube 131 to move downwards, the third spring 134 is compressed, and because the hole of the rubber head 133 is small, so that it is slow when exhausting air, and therefore, the seat cushion 8 moves downward slowly, so that the student can step on the foot board 123 and rotate the foot board 123 downward and rightward after the seat cushion 8 moves to a proper position, thereby driving the third bent pipe 121 to rotate downwards and rightwards, so as to fix the position of the cushion 8, when the student gets up and leaves and rotates and resets the third bent pipe 121, the second circular tube 136, the seat cushion 8 and the thin support tube 5 can be moved upward and restored by the fourth spring 137, and the piston tube 131 can be moved upward and restored by the third spring 134.

Still including moving mechanism 14, moving mechanism 14 is including turning to ball subassembly 141, wheel 142, fixed block 143, brake block 144, fifth spring 145, dial board 146 and second projection 147, footing pipe 1 right side all is equipped with turns to ball subassembly 141, it has shell and universal ball to constitute to turn to ball subassembly 141, the shell is established on footing pipe 1, universal ball rotary type is established in the shell, footing pipe 1 left side all is equipped with wheel 142, footing pipe 1 is interior left side all is equipped with fixed block 143, all be equipped with brake block 144 on the fixed block 143 of sliding type, all be connected between brake block 144 and the adjacent fixed block 143 with fifth spring 145, brake block 144 inboard all is equipped with second projection 147, third return bend 121 downside all is equipped with dials board 146, dial board 146 and the cooperation of second projection 147.

When the wheel 142 is not blocked by the brake block 144 initially, a student can push the base tube 1 to move, so that the wheel 142 and the universal ball in the steering ball component 141 both rotate, the chair can be moved to a required position, after the movement is finished, the student sits, the third bent tube 121 rotates to drive the shifting plate 146 to rotate, the shifting plate 146 rotates to be in contact with the second convex column 147, the second convex column 147 is driven to move leftwards, the second convex column 147 moves leftwards to drive the brake block 144 to move leftwards, the fifth spring 145 is stretched, the brake block 144 moves leftwards to block the wheel 142 and cannot rotate, so that the chair is prevented from suddenly moving when being used, when the third bent tube 121 rotates to drive the shifting plate 146 to rotate and reset, the second convex column 147 and the brake block 144 reset under the action of the fifth spring 145, and the brake block 144 releases the wheel 142, and then the chair can be moved rightwards again.

The self-cleaning mechanism 15 is further included, the self-cleaning mechanism 15 comprises a first mounting block 151, a pipe 152, a one-way valve 153, a spray head 154 and a second mounting block 155, the first mounting block 151 is arranged on the left side in the bottom foot pipe 1, the first mounting block 151 is arranged on the right side of the fixing block 143, the pipe 152 is arranged in the first mounting block 151, the pipe 152 is communicated with the piston rod 132, the one-way valve 153 is arranged on the right side of the pipe 152, the second mounting block 155 is arranged on the left side in the bottom foot pipe 1, the second mounting block 155 is arranged on the left side of the first mounting block 151, the pipe 152 penetrates through the second mounting block 155 on the same side, and the spray head 154 is arranged at the left end.

When the piston tube 131 moves downwards, the discharged air can be sprayed out through the piston rod 132, the tube 152 and the spray head 154 and then sprayed on the wheel 142 to blow away the sundries on the wheel 142, so that the effect that the brake block 144 is blocked on the wheel 142 by the sundries is prevented from being influenced, meanwhile, the air can be prevented from being sprayed out from the air outlet at the right side of the tube 152 under the action of the one-way valve 153, and when the piston tube 131 moves upwards, the external air can flow into the piston rod 132 through the one-way valve 153 and the tube 152 and then enter the piston tube 131.

Still including adjustment mechanism 16, adjustment mechanism 16 is including calorie post 161, gasket 162 and eccentric handle 163, and first return bend 9 upper portion has all opened second spout 164, and the equal slidingtype is equipped with calorie post 161 in the second spout 164, and the equal rotary type in calorie post 161 left side is equipped with eccentric handle 163, and the equal slidingtype in calorie post 161 left side is equipped with gasket 162.

The student can also rotate the eccentric handle 163 first and not block the gasket 162, then pull the gasket 162 to move left, and then can pull the second elbow pipe 111 and the clamping column 161 to move up and down, and after moving to a proper position, can pull the gasket 162 to move right and reset, rotate the eccentric handle 163 and reset, so can adjust the height of the placing plate 112.

It should be understood that the above description is for exemplary purposes only and is not meant to limit the present invention. Those skilled in the art will appreciate that variations of the present invention are intended to be included within the scope of the claims herein.

Claims

1. A tablet chair suitable for students with different heights is characterized by comprising a base pipe (1), an anti-collision block (2), a fixed pipe (3), a thick supporting pipe (4), a thin supporting pipe (5), a clamping block (6), a magnet (7), a cushion (8), a first bent pipe (9), a backrest (10), a placing mechanism (11) and a pedal mechanism (12), wherein the base pipe (1) is symmetrically arranged at the bottom of the fixed pipe (3), the anti-collision blocks (2) are respectively arranged at two sides of the base pipe (1), the thick supporting pipe (4) is respectively arranged at one side of the top of the base pipe (1), the thin supporting pipe (5) is respectively arranged in the thick supporting pipe (4) in a sliding manner, the clamping block (6) is respectively arranged at one side of the thick supporting pipe (4) in a sliding manner, the clamping block (6) is matched with the thin supporting pipe (5), the magnet (7) is respectively arranged at the inner side of the clamping block (6), the cushion (8) is connected, cushion (8) one side symmetry is equipped with first return bend (9), is connected with back (10) between first return bend (9) top, is connected with between first return bend (9) upper portion and places mechanism (11), is connected with pedal mechanism (12) between footing pipe (1) and thick stay tube (4).

2. The tablet chair suitable for students with different heights as claimed in claim 1, wherein the placing mechanism (11) comprises a second bent pipe (111), a placing plate (112) and a book holder (114), the second bent pipe (111) is slidably connected between the upper sides of the first bent pipes (9), the placing plate (112) is rotatably arranged at one end of the second bent pipe (111), a placing groove (113) is formed at one side of the placing plate (112), the book holder (114) is rotatably arranged at one side of the placing plate (112), and an elastic member is connected between the book holder (114) and the placing plate (112).

3. The tablet chair suitable for students with different heights as claimed in claim 2, wherein the pedal mechanism (12) comprises a third elbow (121), a torsion spring (122), a pedal (123), a wedge-shaped connecting block (124), a first convex column (126) and a second spring (127), the third elbow (121) is rotatably connected between one side of the base pipe (1), the torsion spring (122) is connected between the third elbow (121) and the base pipe (1), the pedal (123) is rotatably arranged in the middle of one side of the third elbow (121), the first sliding grooves (125) are symmetrically arranged in the middle of the third elbow (121), the wedge-shaped connecting block (124) is slidably arranged on one side of the thick supporting pipe (4), the wedge-shaped connecting block (124) can be matched with the clamping block (6), the wedge-shaped connecting block (124) is slidably matched with the first sliding grooves (125), the first convex column (126) is slidably arranged on the lower part of one side of the thick supporting pipe (4), and second springs (127) are connected between the first convex columns (126) and the adjacent thick supporting tubes (4).

4. The tablet chair suitable for students with different heights as claimed in claim 3, further comprising a speed reducing mechanism (13), wherein the speed reducing mechanism (13) comprises a piston tube (131), a piston rod (132), a rubber head (133), a third spring (134), a first circular tube (135), a second circular tube (136) and a fourth spring (137), the top of the fixed tube (3) is symmetrically provided with the first circular tube (135), the first circular tube (135) is internally provided with the second circular tube (136) in a sliding manner, the second circular tube (136) is connected with the cushion (8), the cushion (8) and the first circular tube (135) are connected with the fourth spring (137), the thick supporting tube (4) is internally provided with the piston rod (132), the piston rod (132) passes through the bottom foot tube (1), the piston rod (132) is internally provided with the piston tube (131) in a sliding manner, the piston tube (131) and the adjacent piston rod (132) are connected with the third spring (134), the top of the piston rod (132) is provided with a rubber head (133).

5. The tablet chair suitable for students with different heights as claimed in claim 4, further comprising a moving mechanism (14), wherein the moving mechanism (14) comprises a steering ball component (141), wheels (142), a fixed block (143), a brake block (144), a fifth spring (145), a shifting plate (146) and a second convex column (147), the steering ball component (141) is arranged on one side of the base pipe (1), the steering ball component (141) comprises a shell and a universal ball, the shell is arranged on the base pipe (1), the universal ball is rotatably arranged in the shell, the wheels (142) are rotatably arranged on one side of the base pipe (1), the fixed block (143) is arranged on one side of the base pipe (1), the brake block (144) is slidably arranged on the fixed block (143), the brake block (144) is connected with the fifth spring (145) between the brake block (144) and the adjacent fixed block (143), the second convex column (147) is arranged on the inner side of the brake block (144), one side of the third elbow (121) is provided with a shifting plate (146), and the shifting plate (146) is matched with the second convex column (147).

6. The tablet chair suitable for students with different heights as claimed in claim 5, further comprising a self-cleaning mechanism (15), wherein the self-cleaning mechanism (15) comprises a first mounting block (151) and a tube (152), check valve (153), shower nozzle (154) and second installation piece (155), one side all is equipped with first installation piece (151) in footing pipe (1), first installation piece (151) are in fixed block (143) one side, all be equipped with pipe (152) in first installation piece (151), pipe (152) communicate with each other with piston rod (132), pipe (152) one side all is equipped with check valve (153), one side all is equipped with second installation piece (155) in footing pipe (1), second installation piece (155) are in first installation piece (151) one side, pipe (152) all pass second installation piece (155) of homonymy, pipe (152) one end all is equipped with shower nozzle (154).

7. The tablet chair suitable for students with different heights as claimed in claim 6, further comprising an adjusting mechanism (16), wherein the adjusting mechanism (16) comprises a clamping column (161), a gasket (162) and an eccentric handle (163), the upper portion of the first elbow (9) is provided with a second sliding groove (164), the clamping column (161) is arranged in the second sliding groove (164) in a sliding manner, the eccentric handle (163) is rotatably arranged on one side of the clamping column (161), and the gasket (162) is arranged on one side of the clamping column (161) in a sliding manner.

8. A tablet chair adapted for students of different heights as claimed in claim 7, wherein the pad (162) is a rubber film.