CN114468565B - Detachable telescopic student tablet chair - Google Patents

Abstract

The invention relates to a tablet chair, in particular to a detachable telescopic student tablet chair. The invention provides a detachable telescopic student tablet chair capable of improving safety through a protection function. The utility model provides a detachable telescopic student tablet chair, including chassis, crane, carriage, rotation handle and threaded rod etc. the inside slidingtype of chassis is equipped with the crane, and five draw-in grooves have all evenly been opened to both sides around the crane, and the inside upside of chassis is connected with the threaded rod through threaded connection's mode, and the threaded rod right side is equipped with rotates the handle, rotates left side rotation type and is equipped with the carriage, carriage and draw-in groove sliding fit to carriage and chassis sliding fit. Under the effect of connecting frame and leading truck, after the student finishes rotating plate inclination adjustment, student back leans on the rotating plate, and the connecting frame can play the effect of protection to the student, avoids the student to fall down from the cushion, safer.

Description

Detachable telescopic student tablet chair

Technical Field

The invention relates to a tablet chair, in particular to a detachable telescopic student tablet chair.

Background

The chair is needed to be seated when students learn in classrooms, and in the teaching process, the chair is an indispensable auxiliary tool, so that the students can be helped to comfortably spend long learning time.

The utility model provides a take student tablet chair of storing function of publication number CN215190084U, relates to student desk chair field, including the chair frame, the bottom of chair frame is provided with the locker, one side of chair frame is provided with back frame, and one side of back frame upper end is provided with the back pillow, one side fixed mounting of back frame outer wall has the draw-in pulley, one side of chair frame is provided with the fixture block, and fixture block one end is provided with the stock, one side of stock is provided with first spring, and the fixed slot has been seted up to the upper surface of stock, the lower extreme of chair frame is fixedly provided with U type rack, and the outer wall cover of U type rack is equipped with telescopic sleeve, U type rack inner wall meshing is connected with the gear, the inner wall cover of gear is equipped with the second shaft, and the one end of second shaft is fixedly provided with square fixture block. According to the invention, the backrest frame, the clamping wheels and the clamping blocks are arranged, the inclination angle of the backrest frame is adjusted by rotating the clamping wheels, and the clamping wheels are clamped by the clamping blocks, so that the rotation of the backrest frame is limited, and the use comfort of students is improved. Although the inclination angle of the backrest frame can be adjusted by the patent, the safety is not high enough, a certain potential safety hazard exists after the backrest frame is adjusted, and students lean against the backrest frame to easily turn over and fall down.

Aiming at the problems, the chair in the aspect is further improved, and a detachable telescopic student chair capable of improving the safety through a protection function is needed to be designed.

Disclosure of Invention

In order to overcome the defect that the existing tablet chairs have certain potential safety hazards after the inclination angle is adjusted, the invention aims to provide the detachable telescopic student tablet chair capable of improving the safety through the protection function.

The technical proposal is as follows: the utility model provides a detachable telescopic student tablet chair, including the chassis, the crane, the supporting seat, the cushion, the carriage, it is rotated, the threaded rod, adjustment mechanism and protection machanism, the inside slidingtype of chassis is equipped with the crane, five draw-in grooves have all evenly been opened to both sides around the crane, the inside upside of chassis is connected with the threaded rod through threaded connection's mode, the threaded rod right side is equipped with rotates the handle, it is equipped with the carriage to rotate left side rotation, carriage and draw-in groove sliding fit, and carriage and chassis sliding fit, the crane top is equipped with the supporting seat, supporting seat top left side is equipped with the cushion, be equipped with the adjustment mechanism that the student of different heights of being convenient for used on the cushion, be connected with the protection machanism that can prevent that the student from falling down between adjustment mechanism and the cushion.

As the improvement of above-mentioned scheme, adjustment mechanism is including the support frame, the rotor plate, first spiral spring, the connecting block, the mounting bracket, the fly frame, handle and return spring, the cushion right side is equipped with the support frame, the rotor plate is equipped with on the support frame, all be connected with first spiral spring between both sides and the support frame around the rotor plate lower part, both sides all are equipped with the connecting block around the rotor plate lower part, the two connecting block outsides all have round tooth claw, cushion bottom right side is equipped with the mounting bracket, the slidingtype is equipped with the fly frame on the mounting bracket, all be connected with return spring between both sides and the mounting bracket around the fly frame upper portion left side, a set of tooth's socket has all been opened to the front and back both sides on fly frame top right side, every group tooth's socket is two altogether, every group tooth's socket all cooperates with the tooth claw joint on the connecting block of homonymy, the symmetry is equipped with the handle around the fly frame left side.

As the improvement of above-mentioned scheme, protection machanism is equipped with the mount including mount, connection frame and leading truck, rotor plate upper portion right side, and both sides all are equipped with the connection frame around the mount, and cushion bottom left side is equipped with the leading truck, and the leading truck is the U font, inside sliding fit of leading truck and two connection frames.

As the improvement of above-mentioned scheme, still including being used for holding in the palm student's head, and then the head leaning on mechanism of improvement comfort level, head leaning on mechanism is including the installation piece, the cardboard, the dwang, the cushion, promote frame and reset spring, dwang upper portion right side is equipped with the installation piece, both sides all slide type are equipped with the cardboard around on the installation piece, all separate five sloping slot on two blocks of cardboard, be connected with the dwang between two cardboard upside, the pivoted is equipped with the cushion on the dwang, installation piece downside slide type is equipped with promotes the frame, all be connected with reset spring between both sides and the installation piece around promoting the frame, promote frame and sloping slot cooperation.

As the improvement of above-mentioned scheme, still including drive mechanism, drive mechanism is including link, first rotating frame and first torsion spring, is connected with the link on the movable frame, and the last rotation of link is equipped with first rotating frame, all is connected with first torsion spring between both sides and the link around the first rotating frame lower part, and first rotating frame contacts the cooperation with the pushing frame.

As the improvement of above-mentioned scheme, still including being used for the student to lean on leg mechanism, lean on leg mechanism including connecting rod, second rotating turret, protection pad and second torsion spring, all be connected with the connecting rod on two handles, the support seat left side rotation is equipped with the second rotating turret, and second rotating turret bottom is equipped with the protection pad, all is connected with the second torsion spring between both sides and the support seat around second rotating turret upper portion, and the second rotating turret contacts the cooperation with two connecting rods.

As the improvement of above-mentioned scheme, still including the supporting mechanism that can prevent empting, supporting mechanism is including the connecting seat, a pedestal, the second scroll spring, the movable rod, third torsion spring and spacing, the chassis bottom is equipped with the connecting seat, the equal rotation in connecting seat left and right sides is equipped with the base, all be connected with the second scroll spring between the front and back both sides of two bases and the connecting seat, the front portion right side rotation of left portion base is connected with the movable rod, the rear portion left side of right side base also rotates and is equipped with the movable rod, all be connected with two third torsion springs between two movable rod lower parts and the base of homonymy, both sides all are connected with the spacing around the crane upper portion, two spacing all with homonymy movable rod sliding fit.

As an improvement of the scheme, four anti-skid grooves are formed in the upper parts of the two handles.

The invention provides a detachable telescopic student tablet chair, which has the following advantages: 1. under the action of the connecting frame and the guide frame, after the inclination angle of the rotating plate is adjusted by the students, the back of the students leans against the rotating plate, and the connecting frame can protect the students, so that the students are prevented from falling down from the seat cushion and are safer;

2. the students pull the handles downwards to drive the movable frames to move downwards, so that the movable frames can rotate the rotating plate to adjust without clamping the connecting blocks, the students can lie on the rotating plate at the back in the rest time, and after the adjustment is finished, the rotating plate can be prevented from rotating randomly through the fixation of the movable frames and the connecting blocks, so that the students are more stable;

3. the student rotates the rotating handle, the sliding frame can be driven by the threaded rod to move to the right side without clamping the clamping groove, the lifting frame can be detached from the inside of the underframe, the cushion can be cleaned, and meanwhile, the lifting frame is detached and stored;

4. when a student leans on the rotating plate, the head can lean on the back cushion for rest, and the back cushion can be adjusted in height, so that the comfort level of the student in use is improved;

5. when the rotating plate is adjusted under the action of the first rotating frame, the pushing frame is automatically separated from the clamping plate, so that the rotating plate and the back cushion are conveniently and uniformly adjusted, and the rotating plate and the back cushion are integrally and simultaneously carried out, so that the rotating plate is more rapid;

6. when the inclination angle of the rotating plate is adjusted in the rest time, the protection pad can automatically rotate to be horizontally placed, so that the protection pad can be used for leaning legs of students, and the comfort is further improved;

7. the invention can prevent the phenomenon of toppling under the action of the base, and the base can be folded and retracted after the invention is disassembled, so that the occupied area is reduced.

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 view of a partial perspective structure of the present invention.

Fig. 4 is a first partial cross-sectional view of the present invention.

Fig. 5 is a second partial cross-sectional view of the present invention.

Fig. 6 is a schematic perspective view of an adjusting mechanism of the present invention.

Fig. 7 is a partial cross-sectional view of an adjustment mechanism of the present invention.

Fig. 8 is a schematic perspective view of a first part of the adjusting mechanism of the present invention.

Fig. 9 is a schematic perspective view of a second part of the adjusting mechanism of the present invention.

Fig. 10 is a schematic perspective view of a protection mechanism according to the present invention.

Fig. 11 is a schematic perspective view of a headrest mechanism according to the present invention.

Fig. 12 is a schematic perspective view of a first part of the headrest mechanism according to the present invention.

Fig. 13 is a schematic perspective view of a second part of the headrest mechanism of the present invention.

Fig. 14 is a schematic perspective view of a transmission mechanism of the present invention.

Fig. 15 is a schematic perspective view of a portion of a transmission mechanism according to the present invention.

Fig. 16 is a schematic perspective view of a leg rest mechanism according to the present invention.

FIG. 17 is a schematic view of a portion of a leg rest mechanism according to the present invention.

Fig. 18 is a schematic perspective view of a supporting mechanism according to the present invention.

Fig. 19 is a partial cross-sectional view of the support mechanism of the present invention.

Reference numerals in the figures: 1-underframe, 2-lifting frame, 3-supporting seat, 4-cushion, 5-sliding frame, 6-rotating handle, 7-threaded rod, 8-adjusting mechanism, 81-supporting frame, 82-rotating plate, 83-first scroll spring, 84-connecting block, 85-mounting frame, 86-movable frame, 87-handle, 88-return spring, 9-protection mechanism, 91-fixing frame, 92-connecting frame, 93-guiding frame, 10-head rest mechanism, 101-mounting block, 102-clamping plate, 103-rotating rod, 104-cushion, 105-pushing frame, 106-return spring, 11-transmission mechanism, 111-connecting frame, 112-first rotating frame, 113-first torsion spring, 12-leg rest mechanism, 121-connecting rod, 122-second rotating frame, 123-protecting pad, 124-second torsion spring, 13-supporting mechanism, 131-connecting seat, 132-base, 133-second scroll spring, 134-movable rod, 135-third torsion spring, 136-limiting frame.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

The utility model provides a detachable telescopic student tablet chair, show in fig. 1-5, including chassis 1, crane 2, supporting seat 3, cushion 4, carriage 5, rotate 6, threaded rod 7, adjustment mechanism 8 and protection machanism 9, chassis 1 inside slidingtype is equipped with crane 2, five draw-in grooves have all evenly been opened to both sides around the crane 2, the inside upside of chassis 1 is connected with the threaded rod 7 that can accomplish the regulation work through threaded connection's mode, the threaded rod 7 right side is equipped with rotates 6, it is equipped with carriage 5 to rotate 6 left side rotation, carriage 5 and draw-in groove sliding fit, and carriage 5 and chassis 1 sliding fit, the crane 2 top is equipped with supporting seat 3, supporting seat 3 top left side is equipped with the cushion 4 that is used for the student to sit above, be equipped with adjustment mechanism 8 on the cushion 4, be connected with the protection machanism 9 that can improve the security between adjustment mechanism 8 and the cushion 4.

In fig. 1, fig. 2, fig. 6, fig. 7, fig. 8 and fig. 9, adjustment mechanism 8 is including support frame 81, rotating plate 82, first spiral spring 83, connecting block 84, mounting bracket 85, movable frame 86, handle 87 and return spring 88, cushion 4 right side is equipped with support frame 81, the rotation is equipped with rotating plate 82 on the support frame 81, all be connected with first spiral spring 83 between rotating plate 82 lower part front and back both sides and the support frame 81, the connecting block 84 has all been welded to both sides around rotating plate 82 lower part, two connecting block 84 outsides all have round tooth claw, cushion 4 bottom right side is equipped with mounting bracket 85, the slip-type is equipped with movable frame 86 on the mounting bracket 85, all be connected with return spring 88 between the front and back both sides on movable frame 86 upper portion left side and the mounting bracket 85, the front and back both sides on movable frame 86 top right side all open a set of tooth groove, every set of tooth claw joint cooperation on the connecting block 84 of the same side, the symmetrical welding has handle 87 around the movable frame 86 left side, four tooth grooves have when the handle 87 upper portion all to open, can play the anti-slip effect at the student.

The protection mechanism 9 comprises a fixing frame 91, a connecting frame 92 and a guide frame 93, wherein the fixing frame 91 is arranged on the right side of the upper portion of the rotating plate 82, the connecting frame 92 is welded on the front side and the rear side of the fixing frame 91, the guide frame 93 is arranged on the left side of the bottom of the seat cushion 4, the guide frame 93 is U-shaped, and the guide frame 93 is in sliding fit with the interiors of the two connecting frames 92.

When students need to use the device, the students can sit on the cushion 4, the back leans against the rotating plate 82, the students can learn on the desk, the height of the cushion 4 can be adjusted and can be matched with the height of the desk, meanwhile, the students with different heights can use the device conveniently, when the height of the cushion 4 needs to be adjusted to be higher, the rotating handle 6 can be rotated to drive the threaded rod 7 to rotate, the threaded rod 7 can move to the right side while rotating, the sliding frame 5 and the rotating handle 6 are further driven to move to the right side, the sliding frame 5 does not clamp the corresponding clamping groove any more, at the moment, the students can stop rotating the rotating handle 6, then the cushion 4 can be pulled upwards, the supporting seat 3 and the lifting frame 2 are driven to move upwards, the adjusting mechanism 8 and the protecting mechanism 9 can move along with the upward movement, after the students adjust the cushion 4 to the proper height upwards, the rotating handle 6 can be reversely rotated, the threaded rod 7 is driven to move leftwards while reversely rotating, the rotating handle 6 and the sliding frame 5 are driven to move leftwards to reset, the sliding frame 5 is clamped into the corresponding clamping groove, the lifting frame 2 is fixed, the height of the cushion 4 is adjusted, the clamping groove is not clamped by the sliding frame 5 after repeating the operation when the height of the cushion 4 is required to be adjusted downwards, the cushion 4 can be moved downwards, the lifting frame 2 and the supporting seat 3 are driven to move downwards, the adjusting mechanism 8 and the protecting mechanism 9 move downwards along with the downward movement, the height of the cushion 4 can be adjusted downwards, the inclination angle of the student adjustable rotating plate 82 is convenient for rest, the handle 87 can be pulled downwards to drive the movable frame 86 to move downwards, the return spring 88 is compressed, the tooth groove on the movable frame 86 moves downwards and does not clamp the connecting block 84 any more, at this time, the student can rotate the rotating plate 82, the first spiral spring 83 deforms along with the rotating plate 82 rotates to drive the connecting block 84 and the fixing frame 91 to rotate, so that the fixing frame 91 drives the connecting frame 92 to rotate along the guide frame 93, after the student rotates the rotating plate 82 to a proper angle, the student can release the handle 87, so that the movable frame 86 moves upwards to reset under the reset action of the return spring 88, and then drives the handle 87 to move upwards to reset, tooth grooves on the movable frame 86 can clamp the tooth claws on the connecting block 84 again, the rotating plate 82 is fixed, the rotating plate 82 can be prevented from rotating randomly, the student can sit on the seat cushion 4, the back of the student is laid on the rotating plate 82 to rest, the comfort of the student is further improved, the student can be protected under the action of the connecting frame 92 and the guide frame 93, the student is prevented from sliding off the seat cushion 4, and the student is safer, the student needs to reset the rotating plate 82 to the initial state for serious lessons, the handle 87 can be pulled downwards by repeating the operation, so that the movable frame 86 moves downwards and does not clamp the connecting block 84, at the moment, the rotating plate 82 can reversely rotate and reset under the reset action of the first scroll spring 83, further the connecting block 84 is driven to reversely rotate and reset, the rotating plate 82 simultaneously drives the fixing frame 91 and the connecting frame 92 to reversely rotate and reset, the connecting frame 92 reversely rotates and reset along the guide frame 93, the rotating plate 82 can reversely rotate and reset to the initial state, then the handle 87 is released, the movable frame 86 resets and clamps the connecting block 84 again, the rotating plate 82 is further fixed, the random rotation of the rotating plate 82 can be avoided, when the device is used for a period of time, if the cushion 4 needs to be cleaned, the student can repeatedly perform the operation, the sliding frame 5 is not clamped with the clamping groove, and the lifting frame 2 can be moved upwards and separated from the underframe 1, all parts above the lifting frame 2 just break away from the chassis 1, the student can clear up and maintain the cushion 4, lubricating oil can also be smeared to the inside of chassis 1 simultaneously, be convenient for lifting frame 2 slides in the inside of chassis 1, after cushion 4 washs cleanly and dries, alright slide lifting frame 2 into the inside of chassis 1 again, make rest parts on the lifting frame 2 get back to initial position, then student's rethread carriage 5 card draw-in groove, and then fixed lifting frame 2, this device just gets back to initial state, adjustment mechanism 8 in this device can make the student more comfortable in the spare time, and through the cooperation height of adjustable cushion 4 of threaded rod 7 and carriage 5, it is more practical, still possess safeguard function simultaneously, can reduce student's injured risk.

Example 2

On the basis of embodiment 1, fig. 2, fig. 11, fig. 12 and fig. 13 show, still include head rest mechanism 10, head rest mechanism 10 is including installation piece 101, cardboard 102, dwang 103, cushion 104, pushing away frame 105 and reset spring 106, the welding of rotation board 82 upper portion right side has installation piece 101, both sides all slide in front and back on the installation piece 101 are equipped with cardboard 102, five inclined grooves have all been spaced apart on two cardboard 102, be connected with dwang 103 between two cardboard 102 upside, the pivoted on the dwang 103 is equipped with the cushion 104 that is used for the student's head to lean on above, installation piece 101 downside slide is equipped with can fix cushion 104's pushing away frame 105, all be connected with reset spring 106 between pushing away frame 105 front and back and the installation piece 101, pushing away frame 105 and inclined groove cooperation.

When students use the device, the back of the students leans against the rotating plate 82, the head can lean against the back cushion 104, the back cushion 104 can be adjusted in a positive and negative direction according to the requirement, the back cushion 104 and the head can be adjusted in a selective rotation mode, in order to bring convenience for the students with different heights to use, the height of the back cushion 104 can be adjusted, when the height of the back cushion 104 needs to be adjusted downwards, the students can pull the pushing frame 105 to the right side, so that the reset spring 106 is compressed, the pushing frame 105 moves to the right side and does not clamp the inclined groove any more, at the moment, the students can downwards move the clamping plate 102 to drive the rotating rod 103 and the back cushion 104 to move downwards, after the back cushion 104 moves downwards to a proper height, the students can loosen the pushing frame 105, so that the pushing frame 105 moves leftwards under the reset action of the reset spring 106, and clamps into the corresponding inclined groove, the head leaning mechanism 10 is adjusted along with the rotation, when the height of the back cushion 104 needs to be adjusted upwards, the back cushion 104 can be directly pulled upwards, the back cushion 103 and the clamping plate 105 can be pushed upwards, the clamping plate 102 can be repeatedly moved upwards to the inclined groove 102 to the right side by the reset frame 102, the clamping plate 102 can be repeatedly moved to the right side by the reset frame 102, and the clamping plate 102 can be repeatedly moved to the inclined groove 102, and the upper side of the clamping plate is moved upwards and the inclined groove is repeatedly moved to the right, and the clamping plate 102 is moved by the reset frame 102 under the reset action of the reset spring 106, the pushing frame 105 is repeatedly clamped into the corresponding inclined groove, so that the back cushion 104 is fixed, the upward adjustment of the back cushion 104 is completed, and the operation is simple and quick.

The device is shown in fig. 1, 2, 14 and 15, and further comprises a transmission mechanism 11, wherein the transmission mechanism 11 comprises a connecting frame 111, a first rotating frame 112 and a first torsion spring 113, the connecting frame 111 is connected to the movable frame 86, the first rotating frame 112 which can enable the pushing frame 105 to move and not clamp the inclined groove is rotatably arranged on the connecting frame 111, the first torsion spring 113 is connected between the front side and the rear side of the lower portion of the first rotating frame 112 and the connecting frame 111, and the first rotating frame 112 is in contact fit with the pushing frame 105.

When the student adjusts the inclination angle of the rotating plate 82, the student pulls the handle 87 to drive the movable frame 86 to move downwards, the movable frame 86 simultaneously drives the connecting frame 111 and the first rotating frame 112 to move downwards, the first rotating frame 112 moves downwards to push the pushing frame 105, and then the pushing frame 105 is driven to move rightwards, so that the pushing frame 105 does not clamp the clamping plate 102 any more, the height of the cushion 104 can be adjusted, meanwhile, the movable frame 86 moves downwards to not clamp the connecting block 84 any more, the inclination angle of the rotating plate 82 can be adjusted, the whole head leaning mechanism 10 can be adjusted along with the rotating plate 82, the first torsion spring 113 is in a deformed state at the beginning, the pushing frame 105 in the head leaning mechanism 10 rotates to not block the first rotating frame 112 any more, at this time, the first rotating frame 112 rotates under the reset action of the first torsion spring 113, and then rotates along with the pushing frame 105, the handle 87 can be loosened by students after the rotating plate 82 and the back cushion 104 are adjusted, the movable frame 86 drives the handle 87 and the connecting frame 111 to move upwards for resetting, the movable frame 86 further clamps the connecting block 84, the connecting frame 111 further drives the first rotating frame 112 to move upwards to avoid blocking the pushing frame 105, the pushing frame 105 can reset to clamp the clamping plate 102 again, thus the rotating plate 82 is adjusted by the students, the pushing frame 105 releases the clamping plate 102, the back cushion 104 can be adjusted at the same time, the integrated simultaneous operation is more convenient, when the rotating plate 82 needs to be reset in the lesson, the handle 87 can be pulled downwards by repeating the operation, the connecting block 84 is not clamped by the movable frame 86, the rotating plate 82 automatically rotates reversely for resetting, the first rotating frame 112 also repeats the operation downwards, the pushing frame 105 is separated from the clamping plate 102, the rotating plate 82 rotates reversely to drive the head rest mechanism 10 to rotate reversely, so that the pushing frame 105 pushes the first rotating frame 112 to rotate reversely, and the first torsion spring 113 deforms to return to the initial state, so that the whole device returns to the initial state.

The leg rest mechanism 12 is further provided with a connecting rod 121, a second rotating frame 122, a protection pad 123 and a second torsion spring 124, the two handles 87 are respectively connected with the connecting rod 121, the second rotating frame 122 is rotatably arranged on the left side of the supporting seat 3, the protection pad 123 for leaning legs of students is arranged at the bottom of the second rotating frame 122, the second torsion spring 124 is respectively connected between the front side and the rear side of the upper part of the second rotating frame 122 and the supporting seat 3, and the second rotating frame 122 is in contact fit with the two connecting rods 121.

For students' rest when more comfortable in the rest time, when the students rotate the rotating plate 82 downwards and adjust, the handle 87 moves downwards and drives the connecting rod 121 to move downwards simultaneously, initially, the second torsion spring 124 is in a deformation state, after the connecting rod 121 moves downwards and no longer blocks the second rotating frame 122, the second rotating frame 122 rotates under the reset action of the second torsion spring 124, and then the protection pad 123 is driven to rotate, the protection pad 123 is transversely arranged, the students sit on the cushion 4, legs can lean on the protection pad 123, the students rest time is more comfortable, the students can lie on the protection pad, after the rotating plate 82 is adjusted, the students loosen the handle 87, the handle 87 drives the connecting rod 121 to move upwards for reset, when the students need to start to enter a class, the students can pull the handle 87 downwards again, so that the movable frame 86 is not blocked with the connecting rod 84, the rotating plate 82 can reversely rotate for reset, and simultaneously the handle 87 drives the connecting rod 121 to move downwards, the protection pad 123 can reversely rotate, the second rotating frame 122 is driven to make the protection pad 123 to generate deformation, and then the handle 87 can loosen the handle 87, and then the students can automatically loosen the handle 121, and the second torsion spring 121 can be prevented from moving upwards, and the second torsion spring 121 can be further rotated to rotate the second connecting rod 121.

The device is shown in fig. 1, fig. 2, fig. 18 and fig. 19, further comprise a supporting mechanism 13, the supporting mechanism 13 comprises a connecting seat 131, a base 132, a second scroll spring 133, a movable rod 134, a third torsion spring 135 and a limiting frame 136, the bottom of the underframe 1 is provided with the connecting seat 131, the left side and the right side of the connecting seat 131 are respectively provided with the base 132 used for supporting the device in a rotating manner, the second scroll spring 133 is respectively connected between the front side and the rear side of the two bases 132 and the connecting seat 131, the movable rod 134 is respectively connected to the right side of the left base 132 in a rotating manner, the movable rod 134 is respectively arranged on the left side of the rear side of the right base 132 in a rotating manner, two third torsion springs 135 are respectively connected between the lower parts of the two movable rods 134 and the base 132 on the same side, the front side and the rear side of the upper part of the lifting frame 2 are respectively connected to the limiting frames 136, and the two limiting frames 136 are respectively in sliding fit with the movable rod 134 on the same side.

When the device is used, the base 132 is used as a support of the device, the phenomenon that the underframe 1 is unstable and topples over when students lie on the rotating plate 82 for rest can be avoided, when the students need to dismount and store or clean the device, the students can rotate the rotating handle 6 to enable the sliding frame 5 to not clamp the clamping groove any more, the lifting frame 2 can be pulled upwards, the cushion 4 is driven to move upwards, the rest mechanisms and the components are driven to move integrally, the students can dismount the lifting frame 2 from the underframe 1, the lifting frame 2 is also driven to move upwards to drive the limiting frame 136 to move upwards, after the limiting frame 136 moves upwards to separate from the movable rod 134, the students can clean and store the dismounted part, when the students lift the underframe 1 upwards, the supporting mechanism 13 is driven to move integrally upwards, the base 132 is separated from the ground, and the pressure of the connecting seat 131 and the underframe 1 is not influenced any more, the base 132 rotates under the reset action of the second spiral spring 133 in a deformed state, so as to drive the corresponding movable rod 134 to rotate, the movable rod 134 is blocked by the opposite base 132, the bases 132 on the same side continue to rotate, the third torsion spring 135 is deformed, so that the two bases 132 rotate and stand up, the occupied area is reduced, the storage is convenient, when the device is required to be assembled and used, a student can reversely rotate the base 132, the second spiral spring 133 deforms, the third torsion spring 135 gradually resets, after the base 132 rotates to a certain extent, the third torsion spring 135 returns to the initial state, the base 132 can continuously drive the movable rod 134 to reversely rotate and reset, then the student can hold the chassis 1, place the base 132 on the ground, and further the random reset of the second spiral spring 133 can be avoided through the pressure of the connecting base 131 and the chassis 1, after the base 132 is unfolded, after the movable rod 134 is reset, students can slide the lifting frame 2 downwards into the chassis 1, so that other mechanisms and components in the device move along with the movement, the lifting frame 2 drives the limiting frame 136 to slide into the corresponding movable rod 134 again, the limiting frame 136 limits the movable rod 134, after the lifting frame 2 slides into the chassis 1, the students can rotate the handle 6 in a reverse way, the lifting frame 2 is clamped by the sliding frame 5, and the device returns to an initial state, so that the disassembly and assembly work of the device is completed.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.

Claims (4)

1. The utility model provides a detachable telescopic student tablet chair, including chassis (1), crane (2), supporting seat (3), cushion (4), carriage (5), rotate handle (6) and threaded rod (7), chassis (1) inside slidingtype is equipped with crane (2), five draw-in grooves have all been opened to both sides around crane (2), inside upside of chassis (1) is connected with threaded rod (7) through threaded connection's mode, threaded rod (7) right side is equipped with rotates handle (6), rotate handle (6) left side rotation and be equipped with carriage (5), carriage (5) and draw-in groove sliding fit, and carriage (5) and chassis (1) sliding fit, crane (2) top is equipped with supporting seat (3), supporting seat (3) top left side is equipped with cushion (4), characterized by, still including adjustment mechanism (8) and protection machanism (9), be equipped with on cushion (4) be convenient for student's of different heights (8) and protection machanism (9) that can prevent that the student from falling down are connected with between adjustment mechanism (8) and cushion (4);

the adjusting mechanism (8) comprises a supporting frame (81), a rotating plate (82), a first scroll spring (83), a connecting block (84), a mounting frame (85), a movable frame (86), a handle (87) and a return spring (88), wherein the supporting frame (81) is arranged on the right side of the seat cushion (4), the rotating plate (82) is arranged on the supporting frame (81) in a rotating mode, the first scroll spring (83) is connected between the front side and the rear side of the lower portion of the rotating plate (82) and the supporting frame (81), connecting blocks (84) are arranged on the front side and the rear side of the lower portion of the rotating plate (82), a circle of tooth claws are arranged on the outer sides of the two connecting blocks (84), the right side of the bottom of the seat cushion (4) is provided with the mounting frame (85), the movable frame (86) is arranged on the mounting frame (85) in a sliding mode, a group of return springs (88) are arranged between the front side and the left side of the upper portion of the movable frame (86), two groups of tooth grooves are formed in the front side and the right side of the top of the movable frame (86), each group of tooth grooves are in a clamping fit with tooth grooves on the connecting block (84) on the same side, and the left side of the movable frame (86) is symmetrical to the handle (87);

the protection mechanism (9) comprises a fixing frame (91), connecting frames (92) and guide frames (93), wherein the right side of the upper part of the rotating plate (82) is provided with the fixing frame (91), the connecting frames (92) are respectively arranged on the front side and the rear side of the fixing frame (91), the left side of the bottom of the seat cushion (4) is provided with the guide frames (93), the guide frames (93) are U-shaped, and the guide frames (93) are in sliding fit with the interiors of the two connecting frames (92);

the student head rest is characterized by further comprising a head rest mechanism (10) for supporting the student head and further improving comfort, wherein the head rest mechanism (10) comprises a mounting block (101), clamping plates (102), a rotating rod (103), a back cushion (104), a pushing frame (105) and a return spring (106), the right side of the upper part of the rotating plate (82) is provided with the mounting block (101), the clamping plates (102) are slidably arranged on the front side and the rear side of the mounting block (101), five inclined grooves are formed in the two clamping plates (102) at intervals, the rotating rod (103) is connected between the upper sides of the two clamping plates (102), the back cushion (104) is rotatably arranged on the rotating rod (103), the pushing frame (105) is slidably arranged under the mounting block (101), and the return springs (106) are connected between the front side and the rear side of the pushing frame (105) and the mounting block (101), and the inclined grooves are matched;

still including drive mechanism (11), drive mechanism (11) are including link (111), first rotating turret (112) and first torsion spring (113), are connected with link (111) on movable frame (86), and the last rotation of link (111) is equipped with first rotating turret (112), all is connected with first torsion spring (113) between both sides and link (111) around first rotating turret (112) lower part, and first rotating turret (112) and pushing frame (105) contact cooperation.

2. The detachable telescopic student tablet chair according to claim 1, further comprising a leg leaning mechanism (12) for leaning legs of students, wherein the leg leaning mechanism (12) comprises a connecting rod (121), a second rotating frame (122), a protection pad (123) and a second torsion spring (124), the connecting rods (121) are connected to the two handles (87), the second rotating frame (122) is rotatably arranged on the left side of the supporting seat (3), the protection pad (123) is arranged at the bottom of the second rotating frame (122), the second torsion spring (124) is connected between the front side and the rear side of the upper part of the second rotating frame (122) and the supporting seat (3), and the second rotating frame (122) is in contact fit with the two connecting rods (121).

3. The detachable telescopic student tablet chair according to claim 2, further comprising a supporting mechanism (13) capable of preventing toppling, wherein the supporting mechanism (13) comprises a connecting seat (131), a base (132), a second scroll spring (133), a movable rod (134), a third torsion spring (135) and a limiting frame (136), the connecting seat (131) is arranged at the bottom of the underframe (1), the bases (132) are rotatably arranged at the left side and the right side of the connecting seat (131), the second scroll springs (133) are rotatably connected between the front side and the rear side of the two bases (132) and the connecting seat (131), the movable rod (134) is rotatably arranged at the front right side of the left base (132), two third torsion springs (135) are rotatably arranged at the rear side of the right base (132) and between the lower part of the base (132) at the same side, the limiting frames (136) are rotatably connected at the front side and the rear side of the upper part of the lifting frame (2), and the two limiting frames (136) are slidably matched with the movable rod (134) at the same side.

4. A detachable telescopic student tablet chair according to claim 1, characterized in that the upper parts of both handles (87) are provided with four anti-slip grooves.

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