CN114468565A

CN114468565A - Detachable telescopic student tablet chair

Info

Publication number: CN114468565A
Application number: CN202210134789.4A
Authority: CN
Inventors: 李文华
Original assignee: Jiangxi Shengda Industrial Co ltd
Current assignee: Xinjiang Pensen Technology Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-05-13
Anticipated expiration: 2042-02-14
Also published as: CN114468565B

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 telescopic student of detachable tablet chair, including chassis, crane, carriage, rotation and threaded rod etc. the inside slidingtype of chassis is equipped with the crane, and both sides all evenly open around the crane has five draw-in grooves, 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 the rotation, rotates the left side rotary type and is equipped with the carriage, carriage and draw-in groove sliding fit to carriage and chassis sliding fit. Under the effect of carriage and leading truck, after the student finishes the rotor plate inclination regulation, student's back leaned on the rotor plate, and the carriage can play the effect of protection to the student, avoids the student to fall down from the cushion, and is 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 tablet chair is an essential auxiliary tool for students to sit on when the students need to learn in class in a classroom, and can help the students comfortably spend long learning time.

The utility model discloses a take student's desk chair of storing function for CN215190084U relates to student's 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 the back frame, and one side of back frame upper end is provided with the back cushion, one side fixed mounting of back frame outer wall has the card wheel, 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 upper surface of stock has seted up the fixed slot, the fixed U type rack that is provided with of lower extreme of chair frame, and the outer wall cover of U type rack is equipped with the telescope tube, the meshing of U type rack inner wall is connected with the gear, the inner wall cover of gear is equipped with the second axostylus axostyle, and the fixed square fixture block that is provided with in one end of second axostylus axostyle. 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 to limit the rotation of the backrest frame, so that the use comfort of students is improved. Although the inclination angle of the backrest frame can be adjusted, the safety is not high enough, certain potential safety hazard exists after the backrest frame is adjusted, and the condition that a student leans against the backrest frame and is easy to turn over and fall down is easy to occur.

In view of the above problems, further improvements have been made to the tablet chair in this respect, and it is necessary to design a detachable retractable student chair capable of improving safety by a protection function.

Disclosure of Invention

In order to overcome the defect that the prior tablet chair has certain potential safety hazard after the inclination angle is adjusted, the invention aims to provide a detachable telescopic student tablet chair which can improve the safety through a protection function.

The technical scheme is as follows: the utility model provides a telescopic student of detachable tablet chair, including the chassis, the crane, a supporting seat, the cushion, the carriage, rotate the handle, 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 the left side rotary type, 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 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 adjustable shelf, handle and return spring, the cushion right side is equipped with the support frame, the last pivoted type of support frame is equipped with the rotor plate, 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, two connecting block outsides all have the round tooth claw, cushion bottom right side is equipped with the mounting bracket, the gliding type is equipped with the adjustable shelf on the mounting bracket, all be connected with return spring between left front and back both sides in adjustable shelf upper portion and the mounting bracket, a set of tooth's socket has all been opened to both sides around the adjustable shelf top right side, every group tooth's socket is totally two, every group tooth's socket all cooperates with the tooth claw joint on the connecting block of homonymy, symmetry is equipped with the handle around the adjustable shelf left side.

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

As the improvement of above-mentioned scheme, still including being used for holding in the palm student's head, and then improve the mechanism of leaning on head of comfort level, lean on head mechanism including the installation piece, the cardboard, the dwang, the cushion, push away frame and reset spring, rotor plate upper portion right side is equipped with the installation piece, the equal slidingtype in both sides is equipped with the cardboard around on the installation piece, equal spaced apart has five skewed slots on two cardboards, be connected with the dwang between two cardboard upsides, the rotation type is equipped with the cushion on the dwang, installation piece downside slidingtype is equipped with the push away frame, all be connected with reset spring between push away frame front and back both sides and the installation piece, push away frame and skewed slot coordination.

As an improvement of the scheme, the device further comprises a transmission mechanism, the transmission mechanism comprises a connecting frame, a first rotating frame and a first torsion spring, the connecting frame is connected to the movable frame, the first rotating frame is rotatably arranged on the connecting frame, the first torsion spring is connected between the front side and the rear side of the lower portion of the first rotating frame and the connecting frame, and the first rotating frame is in contact fit with the pushing frame.

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

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

As an improvement of the scheme, the upper parts of the two handles are provided with four anti-skidding grooves.

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 students adjust the inclination angle of the rotating plate, the backs of the students lean against the rotating plate, and the connecting frame can protect the students, so that the students are prevented from falling down from the cushion, and the safety is improved;

2. the student pulls the handle downwards to drive the movable frame to move downwards, so that the movable frame does not block the connecting block any more, the rotating plate can be rotated for adjustment, the student can lie on the rotating plate for rest in the back in the afterclass time, and after the adjustment is finished, the movable frame is fixed with the connecting block, so that the rotating plate can be prevented from rotating randomly and is more stable;

3. the student rotates the rotating handle, the sliding frame is driven by the threaded rod to move towards the right side, the clamping groove is not clamped any more, the lifting frame can be detached from the inside of the bottom frame, the seat cushion can be cleaned, and meanwhile the multifunctional chair is detached and stored;

4. when a student leans against the rotating plate, the head of the student can rest on the back cushion, and the height of the back cushion can be adjusted, so that the comfort level of the student 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 can be adjusted in a unified manner, integration is carried out simultaneously, and the operation is quicker;

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

7. the base can be prevented from toppling under the action of the base, and the base can be folded and folded after the base 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 partial perspective view 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 according to the present invention.

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

Fig. 8 is a schematic view of a first partially-separated component of the adjusting mechanism of the present invention.

Fig. 9 is a schematic view of a second partial body structure of the adjusting mechanism of the present invention.

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

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

FIG. 12 is a schematic view of a first partially assembled body of the head rest mechanism of the present invention.

FIG. 13 is a second partial schematic view of a headrest mechanism of the present invention.

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

Fig. 15 is a schematic perspective view of a part of the transmission mechanism of the present invention.

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

Fig. 17 is a perspective view of a portion of the leg rest mechanism of the present invention.

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

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

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

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

A detachable telescopic student tablet chair is shown in figures 1-5 and comprises an underframe 1, a lifting frame 2, a supporting seat 3, a cushion 4, a sliding frame 5, a rotating handle 6, a threaded rod 7, an adjusting mechanism 8 and a protective mechanism 9, wherein the lifting frame 2 is arranged in the underframe 1 in a sliding way, five clamping grooves are uniformly formed in the front side and the rear side of the lifting frame 2, the upper side in the underframe 1 is connected with the threaded rod 7 capable of completing the adjusting work in a threaded connection way, the rotating handle 6 is arranged on the right side of the threaded rod 7, the sliding frame 5 is rotatably arranged on the left side of the rotating handle 6, the sliding frame 5 is in sliding fit with the clamping grooves, and

carriage

5 and 1 sliding fit of chassis, 2 tops of crane are equipped with supporting

seat

3, and 3 top left sides of supporting seat are equipped with the cushion 4 that is used for the student to sit on it, are equipped with adjustment mechanism 8 on the cushion 4, are connected with the protection machanism 9 that can improve the security between adjustment mechanism 8 and the cushion 4.

As shown in fig. 1, 2, 6, 7, 8 and 9, the adjusting mechanism 8 includes a support frame 81, a rotating plate 82, a first spiral spring 83, a connecting block 84, a mounting frame 85, a movable frame 86, a handle 87 and a return spring 88, the support frame 81 is disposed on the right side of the seat cushion 4, the rotating plate 82 is rotatably disposed on the support frame 81, the first spiral springs 83 are connected between the front and rear sides of the lower portion of the rotating plate 82 and the support frame 81, the connecting blocks 84 are welded on the front and rear sides of the lower portion of the rotating plate 82, a circle of teeth claws are disposed on the outer sides of the two connecting blocks 84, the mounting frame 85 is disposed on the right side of the bottom of the seat cushion 4, the movable frame 86 is slidably disposed on the mounting frame 85, the return springs 88 are connected between the front and rear sides of the upper portion of the movable frame 86 and the mounting frame 85, a set of tooth grooves are formed on the front and rear sides of the right side of the top of the movable frame 86, two tooth grooves are formed in total, each set of tooth grooves are engaged with the teeth claws on the connecting block 84 on the same side, the handles 87 are symmetrically welded to the front and the back of the left side of the movable frame 86, and four anti-slip grooves are formed in the upper portions of the two handles 87, so that the anti-slip effect can be achieved, and the handles 87 can be pulled by students conveniently.

As shown in fig. 1, 2 and 10, the protection mechanism 9 includes a fixed frame 91, a connecting frame 92 and a guide frame 93, the fixed frame 91 is disposed on the right side of the upper portion of the rotating plate 82, the connecting frames 92 are welded on the front and rear sides of the fixed frame 91, the guide frame 93 is disposed 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 insides of the two connecting frames 92.

When a student needs to use the device, the student can sit on the cushion 4, the back of the student leans against the rotating plate 82, the student can study on the desk, the height of the cushion 4 can be adjusted to be matched with the height of the desk, and meanwhile, the student with different heights can use the device conveniently, when the height of the cushion 4 needs to be increased, the rotating handle 6 can be rotated to drive the threaded rod 7 to rotate, so that the threaded rod 7 moves towards the right side while rotating, and further the sliding frame 5 and the rotating handle 6 are driven to move towards the right side, so that the sliding frame 5 does not block a corresponding clamping groove, at the moment, the student can stop rotating the rotating handle 6, then the cushion 4 can be pulled upwards to drive the supporting seat 3 and the lifting frame 2 to move upwards, the adjusting mechanism 8 and the protection mechanism 9 move upwards along with the upwards, after the student adjusts the cushion 4 upwards to a proper height, the rotating handle 6 can be rotated reversely, and the threaded rod 7 is driven to move towards the left side while rotating reversely, then the rotating handle 6 and the sliding frame 5 are driven to move leftwards to reset, so that the sliding frame 5 is clamped into the corresponding clamping groove, the lifting frame 2 can be fixed, the height of the cushion 4 is adjusted, and the same can be obtained, when the height of the cushion 4 needs to be adjusted downwards, the operation needs to be repeated, so that the sliding frame 5 does not clamp the clamping groove, 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, so that the height of the cushion 4 can be adjusted downwards, when the class time is up, a student can adjust the inclination angle of the rotating plate 82 to be 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 is not clamped with the connecting block 84 any more, and then the student can rotate the rotating plate 82, the first scroll spring 83 deforms accordingly, the rotating plate 82 rotates to drive the connecting block 84 and the fixed frame 91 to rotate, the fixed 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 to enable the movable frame 86 to move upwards and reset under the resetting action of the return spring 88, the handle 87 is driven to move upwards and reset, tooth grooves on the movable frame 86 clamp tooth claws on the connecting block 84 again to fix the rotating plate 82, the rotating plate 82 can be prevented from rotating randomly, the student can sit on the cushion 4, the back of the student lies on the rotating plate 82 to rest, the comfort of the student is 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 down from the cushion 4, the student is safer, and when in class, the student needs to reset the rotating plate 82 to an initial state for conscientious class, the operation can be repeated to pull the handle 87 downwards, so that the movable frame 86 moves downwards and does not block the connecting block 84 any more, at the moment, the rotating plate 82 can rotate reversely and reset under the reset action of the first scroll spring 83, so as to drive the connecting block 84 to rotate reversely and reset, the rotating plate 82 drives the fixed frame 91 and the connecting frame 92 to rotate reversely and reset simultaneously, so that the connecting frame 92 rotates reversely along the guide frame 93, so as to enable the rotating plate 82 to rotate reversely and reset to an initial state, then the handle 87 is released, so that the movable frame 86 resets and blocks the connecting block 84 again, so as to fix the rotating plate 82, the rotating plate 82 can be prevented from rotating randomly, after the device is used for a period of time, when the cushion 4 needs to be cleaned, students can repeat the operation, so that the sliding frame 5 does not block the clamping groove any more, the lifting frame 2 can move upwards and separate from the bottom frame 1, and all the components above the lifting frame 2 can separate from the bottom frame 1, the student can clear up and maintain cushion 4, lubricating oil is paintd to the inside of chassis 1 also simultaneously, the crane 2 of being convenient for slides in chassis 1's inside, after 4 sanitization stoving of cushion, alright slide crane 2 into chassis 1's inside again, make all the other parts on the crane 2 get back to the initial position, then the student blocks the draw-in groove through carriage 5 again, and then fixed crane 2, initial state is just got back to this device, adjustment mechanism 8 in this device so can make the student more comfortable in the time of leaving a lesson, and the height of the adjustable cushion 4 of cooperation through threaded rod 7 and carriage 5, and is more practical, still possess safeguard function simultaneously, can reduce the injured risk of student.

Example 2

On the basis of embodiment 1, in fig. 1, fig. 2, fig. 11, fig. 12 and fig. 13, still including leaning on first mechanism 10, lean on first mechanism 10 including installation piece 101, cardboard 102, dwang 103, cushion 104, pushing frame 105 and reset spring 106, the welding of rotor plate 82 upper portion right side has installation piece 101, both sides all slidingtype is equipped with cardboard 102 around on installation piece 101, all interval division has five skewed slots on two cardboards 102, be connected with dwang 103 between two cardboard 102 upsides, the last rotation type of dwang 103 is equipped with and is used for the cushion 104 that student's head leaned on above, installation piece 101 downside slidingtype is equipped with pushing frame 105 that can fix cushion 104, all be connected with reset spring 106 between pushing frame 105 front and back both sides and installation piece 101, pushing frame 105 and skewed slot cooperation.

When a student uses the device, the back of the student leans against the rotating plate 82, the head of the student leans against the back cushion 104, the back cushion 104 can be adjusted, the back and the front can be selectively rotated in the two directions as required to be adjusted, the back cushion 104 can be more closely attached to the head of the student, the height of the back cushion 104 can be adjusted as convenient for students with different heights to use, when the height of the back cushion 104 is required to be adjusted to be low, the student can pull the pushing frame 105 to the right side to compress the reset spring 106, the pushing frame 105 moves to the right side to avoid clamping the inclined groove, at the moment, the student can move the clamping plate 102 downwards 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 student can release the pushing frame 105 to enable the pushing frame 105 to move to the left side under the reset action of the reset spring 106 to reset, and then clamp into the corresponding inclined groove, the head of the student leans against the back cushion 104 more accurately and comfortably, when the student adjusts the inclination angle of the rotating plate 82, the whole head leaning mechanism 10 will also be adjusted along with the rotation, when the height of the back cushion 104 needs to be adjusted upwards, the back cushion 104 can be pulled upwards directly to drive the rotating rod 103 and the clamping plate 102 to move upwards, because the inclined plane on the clamping plate 102 is an inclined groove, the clamping plate 102 can move upwards to push the pushing frame 105 to move towards the right side through the inclined groove of the clamping plate 102, so that the reset spring 106 is compressed, after the next inclined groove on the clamping plate 102 is aligned with the pushing frame 105, the pushing frame 105 can move the reset clamp into the inclined groove towards the left side under the resetting action of the reset spring 106, the clamping plate 102 moves upwards to push the pushing frame 105 repeatedly, so that the pushing frame 105 moves towards the right side repeatedly, the clamping plate 102 can further stagger the pushing frame 105, after the back cushion 104 is adjusted to a proper height, the back cushion 104 stops moving, so that the pushing frame 105 repeats the above operation and clamps into the corresponding inclined groove, and further fixing the back cushion 104, so that the upward adjustment of the back cushion 104 is completed, and the operation is simple and quick.

As shown in fig. 1, 2, 14 and 15, the device further includes a transmission mechanism 11, the transmission mechanism 11 includes a connecting frame 111, a first rotating frame 112 and a first torsion spring 113, the movable frame 86 is connected with the connecting frame 111, the connecting frame 111 is rotatably provided with the first rotating frame 112 capable of moving the pushing frame 105 without blocking the inclined slot, the first torsion springs 113 are connected between the front and rear sides 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 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 drives the pushing frame 105 to move towards the right side, so that the pushing frame 105 no longer blocks the clamping plate 102, the height of the back cushion 104 can be adjusted, meanwhile, the movable frame 86 moves downwards to no longer block the connecting block 84, the inclination angle of the rotating plate 82 can be adjusted in a rotating manner, the whole headrest mechanism 10 is adjusted along with the rotating plate 82, the first torsion spring 113 is in a deformation state initially, the pushing frame 105 in the headrest mechanism 10 rotates to no longer block the first rotating frame 112, at this time, the first rotating frame 112 rotates under the resetting action of the first torsion spring 113, and then the pushing frame 105 rotates, the handle 87 can not be separated from the pushing frame 105, after the rotating plate 82 and the back cushion 104 are adjusted, the student can release the handle 87, so that the movable frame 86 drives the handle 87 and the connecting frame 111 to move upwards and reset, the movable frame 86 further clamps the connecting block 84, the connecting frame 111 further drives the first rotating frame 112 to move upwards and not block the pushing frame 105, the pushing frame 105 can reset and clamp the clamping plate 102 again, so that the pushing frame 105 can release the clamping plate 102 while the student adjusts the rotating plate 82, the back cushion 104 can be adjusted simultaneously, the integration and simultaneous operation are more convenient, when the rotating plate 82 needs to be reset in a lesson, the handle 87 can be pulled downwards by repeating the operation, so that the movable frame 86 does not clamp the connecting block 84 any more, the rotating plate 82 automatically rotates reversely and resets, the first rotating frame 112 also moves downwards by repeating the operation, so that the pushing frame 105 is separated from the clamping plate 102, the rotation plate 82 rotates reversely to drive the whole head mechanism 10 to rotate reversely, so that the pushing frame 105 pushes the first rotating frame 112 to rotate reversely, the first torsion spring 113 deforms to return to the initial state, and the whole device returns to the initial state.

As shown in fig. 1, 2, 16 and 17, the leg support device further includes a leg support mechanism 12, the leg support mechanism 12 includes a connecting rod 121, a second rotating frame 122, a pad 123 and a second torsion spring 124, the two handles 87 are connected to the connecting rod 121, the second rotating frame 122 is rotatably disposed on the left side of the support base 3, the pad 123 for supporting the legs of the student is disposed at the bottom of the second rotating frame 122, the second torsion springs 124 are connected between the front side and the rear side of the upper portion of the second rotating frame 122 and the support base 3, and the second rotating frame 122 is in contact fit with the two connecting rods 121.

In order to make the rest of the student more comfortable in the rest time, when the student rotates and adjusts the rotating plate 82 downwards, the handle 87 moves downwards and drives the connecting rod 121 to move downwards, the second torsion spring 124 is in a deformation state initially, after the connecting rod 121 moves downwards and does not block the second rotating frame 122, the second rotating frame 122 rotates under the resetting action of the second torsion spring 124, and further drives the protection pad 123 to rotate, so that the protection pad 123 is transversely arranged, the student sits on the cushion 4, the legs can lean against the protection pad 123, the student is more comfortable in the rest time and can lie half, after the adjustment of the rotating plate 82 is finished, the student loosens the handle 87, so that the handle 87 drives the connecting rod 121 to move upwards and reset, when the student needs to start the class, the student can pull the handle 87 downwards again, so that the movable frame 86 does not clamp the connecting block 84 any more, and the rotating plate 82 can rotate reversely and reset, meanwhile, the handle 87 drives the connecting rod 121 to move downwards, the protection pad 123 capable of being rotated reversely by a student is folded, the second rotating frame 122 is driven to rotate reversely, the second torsion spring 124 deforms, then the handle 87 can be loosened by the student, the connecting rod 121 is driven by the handle 87 to move upwards to reset, the second rotating frame 122 can be blocked by the connecting rod 121, the second torsion spring 124 is prevented from rotating randomly, and the protection pad 123 can be automatically unfolded under the action of the second torsion spring 124.

Fig. 1, fig. 2, fig. 18 and fig. 19 show, the device further includes a supporting mechanism 13, the supporting mechanism 13 includes a connecting seat 131, a base 132, a second spiral spring 133, a movable rod 134, a third torsion spring 135 and a limiting frame 136, the bottom of the chassis 1 is provided with the connecting seat 131, the base 132 for supporting the device is rotatably arranged on the left and right sides of the connecting seat 131, the second spiral spring 133 is connected between the front and rear sides of the two bases 132 and the connecting seat 131, the front right side of the left base 132 is rotatably connected with the movable rod 134, the rear left side of the right base 132 is also rotatably provided with the movable rod 134, two third torsion springs 135 are connected between the lower parts of the two movable rods 134 and the base 132 on the same side, the front and rear sides of the upper part of the crane 2 are respectively connected with the limiting frame 136, and the two limiting frames 136 are slidably matched with the movable rods 134 on the same side.

When the device is used, the base 132 is used as a support of the device, so that the phenomenon that the underframe 1 is unstably toppled when a student lies on the rotating plate 82 for rest can be avoided, when the student needs to disassemble, store or clean the device, the student rotates the rotating handle 6 to ensure that the sliding frame 5 does not block the clamping groove any more, the student can upwards pull the lifting frame 2 to drive the cushion 4 to upwards move so as to drive other mechanisms and components to integrally move, the student can disassemble the lifting frame 2 from the underframe 1, the lifting frame 2 upwards moves to drive the limiting frame 136 to upwards move, after the limiting frame 136 upwards moves to separate from the movable rod 134, the student can clean and store the disassembled part, when the student upwards takes the underframe 1, the support mechanism 13 is driven to integrally upwards move so that the base 132 is separated from the ground, and further pressure of the connecting seat 131 and the underframe 1 is not applied, the base 132 will rotate under the reset action of the second scroll spring 133 in the deformation state, and then drive the corresponding movable rod 134 to rotate, so that the movable rod 134 is blocked by the opposite base 132, and the base 132 on the same side continues to rotate, so that the third torsion spring 135 is deformed, so that the two bases 132 rotate to stand up, the floor area can be reduced, and the device is convenient to store, when the device needs to be assembled and used, a student can reversely rotate the base 132, so that the second scroll spring 133 is deformed, and the third torsion spring 135 gradually resets, after the base 132 rotates to a certain degree, the third torsion spring 135 returns to the initial state, the base 132 can continue to drive the movable rod 134 to reversely rotate to reset, then the student can hold the bottom frame 1 by hand, place the base 132 on the ground, and further avoid the second scroll spring 133 from resetting at will through the pressure of the connecting seat 131 and the bottom frame 1, after base 132 expandes, simultaneously the back is also reset to movable rod 134, the student alright make crane 2 inside the downward sliding chassis 1, make all the other mechanisms in this device along with the part removes, crane 2 drives simultaneously on spacing 136 slides the movable rod 134 that corresponds again, make spacing 136 carry on spacingly to movable rod 134, after crane 2 slides inside chassis 1, student's accessible reversal rotation is 6, make carriage 5 block crane 2, initial state is just got back to this device, so just accomplish the dismantlement and the equipment work to this device.

Finally, it should be noted that: 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 or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A detachable telescopic student tablet chair comprises an underframe (1), a lifting frame (2), a supporting seat (3), a cushion (4), a sliding frame (5), a rotating handle (6) and a threaded rod (7), wherein the lifting frame (2) is arranged in the underframe (1) in a sliding manner, five clamping grooves are uniformly formed in the front side and the rear side of the lifting frame (2), the upper side in the underframe (1) is connected with the threaded rod (7) in a threaded connection manner, the rotating handle (6) is arranged on the right side of the threaded rod (7), the sliding frame (5) is rotatably arranged on the left side of the rotating handle (6), the sliding frame (5) is in sliding fit with the clamping grooves, the sliding frame (5) is in sliding fit with the underframe (1), the supporting seat (3) is arranged on the top of the lifting frame (2), the cushion (4) is arranged on the left side of the top of the supporting seat (3), and is characterized by further comprising an adjusting mechanism (8) and a protective mechanism (9), the adjusting mechanism (8) which is convenient for students with different heights to use is arranged on the cushion (4), and a protective mechanism (9) which can prevent the students from falling down is connected between the adjusting mechanism (8) and the cushion (4).

2. A detachable telescopic student tablet chair as claimed in claim 1, wherein the adjusting mechanism (8) comprises a support frame (81), a rotating plate (82), a first volute spring (83), connecting blocks (84), a mounting frame (85), a movable frame (86), a handle (87) and a return spring (88), the support frame (81) is arranged on the right side of the cushion (4), the rotating plate (82) is rotatably arranged on the support frame (81), the first volute spring (83) is connected between the front and rear sides of the lower portion of the rotating plate (82) and the support frame (81), the connecting blocks (84) are respectively arranged on the front and rear sides of the lower portion of the rotating plate (82), a circle of tooth claws are respectively arranged on the outer sides of the two connecting blocks (84), the mounting frame (85) is arranged on the right side of the bottom of the cushion (4), the movable frame (86) is slidably arranged on the mounting frame (85), the return spring (88) is respectively connected between the front and rear sides of the left upper portion of the movable frame (86) and the mounting frame (85), a group of tooth grooves are formed in the front side and the rear side of the right side of the top of the movable frame (86), each group of tooth grooves are two in number, each group of tooth grooves is matched with tooth claws on the connecting blocks (84) on the same side in a clamping mode, and handles (87) are symmetrically arranged on the front side and the rear side of the left side of the movable frame (86).

3. A detachable telescopic student tablet chair as claimed in claim 2 wherein the protection mechanism (9) comprises a fixed mount (91), a connecting frame (92) and a guide frame (93), the fixed mount (91) is provided on the right side of the upper part of the rotating plate (82), the connecting frame (92) is provided on both the front and rear sides of the fixed mount (91), the guide frame (93) is provided 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 inside of the two connecting frames (92).

4. A detachable telescopic student tablet chair as claimed in claim 3 further comprising a headrest mechanism (10) for supporting the head of a student and further improving comfort, wherein the headrest mechanism (10) comprises a mounting block (101), a clamping plate (102), a rotating rod (103), a back cushion (104), a pushing frame (105) and a return spring (106), the mounting block (101) is arranged on the right side of the upper part of the rotating plate (82), the clamping plate (102) is arranged on the mounting block (101) in a sliding manner on the front side and the rear side, five inclined grooves are arranged on 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 arranged on the rotating rod (103) in a rotating manner, the pushing frame (105) is arranged on the lower side of the mounting block (101) in a sliding manner, the return spring (106) is connected between the front side and the rear side of the pushing frame (105) and the mounting block (101), the pushing frame (105) is matched with the inclined groove.

5. A detachable telescopic student tablet chair as claimed in claim 4 further comprising 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) is rotatably arranged on the connecting frame (111), the first torsion spring (113) is connected between the connecting frame (111) and the front and back sides of the lower portion of the first rotating frame (112), and the first rotating frame (112) is in contact fit with the pushing frame (105).

6. A detachable telescopic student tablet chair according to claim 5, further comprising a leg rest mechanism (12) for supporting legs of students, wherein the leg rest mechanism (12) comprises a connecting rod (121), a second rotating frame (122), a protection pad (123) and a second torsion spring (124), the connecting rod (121) is connected to each of 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 portion 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).

7. A detachable telescopic student tablet chair as claimed in claim 6 further comprising a support mechanism (13) capable of preventing toppling over, the support mechanism (13) comprising 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 bottom frame (1) is provided with the connecting seat (131), the bases (132) are rotatably arranged on the left and right sides of the connecting seat (131), the second scroll spring (133) is connected between the front and rear sides of the two bases (132) and the connecting seat (131), the movable rod (134) is rotatably connected on the right side of the front portion of the left base (132), the movable rod (134) is rotatably arranged on the left side of the rear portion of the right base (132), and two third torsion springs (135) are connected between the lower portions of the two movable rods (134) and the bases (132) on the same side, the front side and the rear side of the upper part of the lifting frame (2) are both connected with limiting frames (136), and the two limiting frames (136) are in sliding fit with the movable rod (134) on the same side.

8. A detachable telescopic student chair as claimed in claim 2 wherein four anti-slip grooves are provided on the upper part of each of the two handles (87).