CN221059958U - Noon break tablet chair capable of being spliced adjacently - Google Patents

Abstract

The utility model discloses a noon break tablet chair capable of being spliced adjacently, which comprises a turnover tablet chair and a hasp tablet chair, wherein the main structures of the turnover tablet chair and the hasp tablet chair are the same, and the difference is that a square turnover plate is arranged on the right side or the left side of the top of the turnover tablet chair; a hasp is arranged on the left side or the right side of the top of the seat frame of the hasp tablet chair; when the split joint is carried out, the square turning plate is turned upwards for 90 degrees to be flush with the square chair seat plate of the hasp tablet chair, the right-angle inserting plate on the turning plate tablet chair is downwards inserted into the hasp of the hasp tablet chair, and the adjacent turning plate tablet chair and the hasp tablet chair are connected into a whole to form a noon break bed. The advantages are that: the universal compatibility is good, the heights of the turnover plate tablet chair and the hasp tablet chair are adjusted, and the turnover plate tablet chair is universal for students of high and low grades and convenient to manage; the length of the noon break bed spliced by the square turning plate is enough; the contact area between the chair feet and the floor is large, and the anti-abrasion rubber sleeve is arranged, so that the contact area between the chair feet and the floor is large, and the cement floor cannot be damaged.

Description

Noon break tablet chair capable of being spliced adjacently

Technical Field

The utility model relates to a tablet chair, in particular to a noon break tablet chair with additional functions and capable of being spliced adjacently.

Background

When students in general schools are in noon break, as the design of the tablet chairs and the desks does not have noon break function, the students generally sit on the tablet chairs at the lower part of the body, lie on the desks at the upper part of the head and sleep, and the head is pressed on the hands. The cervical vertebra is easy to be damaged for a long time, the neck channels are blocked, the qi and blood circulation of the head is influenced, the rest quality is influenced, the brain is influenced, and the attention of students is not concentrated and the memory is reduced; meanwhile, the qi and blood circulation of the hands are also affected, and the hand numbness is caused.

In order to solve the technical problems, the applicant submits an utility model patent application with the application number of CN201821802444.7 to the China patent office on the 11 th 2018 and 02 th month, and discloses a novel noon break tablet chair which comprises a chair frame and a square chair seat plate, wherein buckles and square turning plates are respectively arranged on the left side and the right side of the seat frame of the chair frame; the back edge of the upper part of the square turning plate can be hinged on the seat frame in a 90-degree rotating way through a hinge, and the back edge of the lower part of the square turning plate is provided with a right-angle inserting plate; the square turning plate is turned upwards for 90 degrees to be flush with the square chair plate, and the right-angle plugboard is inserted into the hasp of the adjacent noon break tablet chairs which can be spliced adjacently to form the noon break bed. In addition, the backrest frame is provided with a buckle belt which is arranged diagonally and is used for preventing the body from excessively leaning forward. The advantages are that: the structure is scientific, simple and compact, and is easy to manufacture; the function is more complete, more convenient and practical, and the adjacent chairs are connected with each other through the square turning plate, so that the chairs are converted into the noon break beds of students, and the technical problem that the students lie on the desk in noon break to damage health is solved; the sitting posture of students can be corrected through the buckle belt, and myopia is prevented; the use is more convenient.

However, during the actual use of the novel noon break tablet chair, the applicant has found some detailed drawbacks, in particular as follows: (1) The novel noon break tablet chair is generally applied to schools of middle and primary schools, and is characterized in that the heights of students of all grades are in a trend of growing from low grades to high grades, and the heights of individuals of different students of the same grade are different, so that the novel noon break tablet chair has the advantages that the heights are consistent, the height cannot be adjusted according to the heights of the students, and the tablet chair with the fixed height is not beneficial to the growth and development of the students, so that the novel noon break tablet chair has the technical problem that the general compatibility is not ideal; (2) The contact area between the chair legs and the floor of the novel noon break tablet chair is small, the floor is easy to wear in a range for a long time, and even pits appear on the floor under the long-time repeated friction impact of the chair legs, so that irreversible damage of the cement floor occurs.

Disclosure of utility model

In order to solve the defects of the prior tablet chairs, the utility model provides the noon break tablet chair which has better performances and can be spliced adjacently.

In order to achieve the above purpose, the utility model adopts the following scheme:

The noon break tablet chair comprises a turning plate tablet chair and a hasp tablet chair which are adjacently spliced, wherein the main structures of the turning plate tablet chair and the hasp tablet chair are the same, the turning plate tablet chair and the hasp tablet chair both comprise a chair frame and a square chair seat plate, the chair frame comprises a chair foot rest and a backrest frame, the square chair seat plate is arranged on the chair foot rest, and the backrest frame is arranged on the rear side of the top of the chair frame; the method is characterized in that:

the chair leg comprises an upper chair frame and a lower chair frame, and the upper chair frame is arranged on the lower chair frame in a lifting manner;

A square turning plate is arranged on the right side or the left side of the top of the chair foot rest of the turning plate tablet chair; the upper edge of the square turning plate can be hinged on the chair foot rest in a 90-degree rotation way through a hinge, the lower edge of the square turning plate is provided with a right-angle inserting plate, one side of the right-angle inserting plate is fixed on the back surface of the square turning plate, and the other side of the right-angle inserting plate is perpendicular to the edge of the right-angle inserting plate;

a hasp is arranged on the left side or the right side of the top of the chair foot rest of the hasp tablet chair; the hasp is a bearing sheet with a groove punched in the middle and is transversely arranged on the chair foot rest; the groove of the bearing sheet is matched with the size of the right-angle plugboard, when the bearing sheet is spliced, the square overturning plate is upwards overturned for 90 degrees to be flush with the square chair seat board of the hasp tablet chair, the right-angle plugboard on the overturning plate tablet chair is downwards inserted into the hasp of the hasp tablet chair, and the adjacent overturning plate tablet chair and the hasp tablet chair are connected into a whole to form a noon break bed.

Further, the lower chair frame comprises two lower foot frames, namely a front lower foot frame and a rear lower foot frame, and the front lower foot frame and the rear lower foot frame are arranged in a front-back manner; each lower foot rest comprises two hollow lower chair legs and a transverse bar, and the two lower chair legs are respectively fixed at two ends of the transverse bar to form a side-turning I-shaped structure; the side wall of the lower chair leg is provided with 1-2 opposite outer height adjusting holes which are distributed from top to bottom at intervals;

The upper chair frame comprises two upper foot frames, namely a left upper foot frame and a right upper foot frame, which are distributed in a left-right arrangement; each upper foot rest comprises two upper chair feet and a transverse support plate which is transversely arranged, and the two upper chair feet are respectively fixed at the two ends of the bottom of the transverse support plate to form a reverse U-shaped structure; the side wall of the upper chair leg is provided with a plurality of opposite inner height adjusting holes which are distributed at intervals from top to bottom;

the upper chair leg of the left upper foot rest is sleeved and inserted in the lower chair leg of the front lower foot rest from top to bottom, and the upper chair leg of the left upper foot rest is sleeved and inserted in the lower chair leg of the rear lower foot rest from top to bottom;

The front upper chair leg of the right upper foot rest is sleeved and inserted into the right lower chair leg of the front lower foot rest from top to bottom, and the rear upper chair leg of the right upper foot rest is sleeved and inserted into the right lower chair leg of the rear lower foot rest from top to bottom;

The outer height adjusting holes of the lower chair leg are coaxially aligned with the corresponding inner height adjusting holes of the upper chair leg, and the lower chair leg is provided with a positioning pin penetrating through the outer height adjusting holes and the inner height adjusting holes.

When the height of the turning plate tablet chair or the hasp tablet chair is required to be adjusted, the positioning pin is taken out, the relative high and low positions of the upper chair frame and the lower chair frame can be adjusted through the up-and-down lifting movement of the upper chair frame and the lower chair frame, and the upper chair frame and the lower chair frame are fixed by the positioning pin. Therefore, the height of students with different heights can be adjusted through the locating pins, if the heights of the high-grade students and the low-grade students are generally different, the height of the students can be adjusted in the mode, so that the high-grade students and the low-grade students of a specification type chair are universal, and the students are convenient to manage and use.

Further, a protective rubber sleeve is nested at the upper end part of the lower chair leg.

Further, the lower chair leg, the cross bar and the upper chair leg are hollow tubes with flat round corner structures made of hard metal materials, and the hollow tubes are coated with rust-proof layers.

Further, the chair foot rest is provided with two foot boards, namely a left foot board and a right foot board, which are distributed on the left side and the right side of the bottom of the chair foot rest in a front-back trend left and right; the transverse support plate of the upper chair leg is a hollow square tube made of hard metal material, and the hollow tube is coated with a rust-proof layer; the hollow square tube is provided with a plurality of connecting lugs for the self-tapping screws to pass through, and the square chair plate is fixed on the chair foot rest through the self-tapping screws passing through the connecting lugs.

Further, the backrest frame comprises two hollow square tubes with round guide angles, the two hollow square tubes are connected with the rear ends of the left baseboard and the right baseboard respectively to form a whole, the backrest frame front side is provided with a backrest plate, the hollow square tubes are provided with a plurality of connecting lugs for self-tapping screws to pass through, the backrest plate is fixed on the backrest frame through the connecting lugs, and the hollow square tubes are coated with a rust-proof layer.

Further, both ends of the left floor board and the right floor board are respectively provided with an anti-abrasion rubber sleeve, and the bottoms of the anti-abrasion rubber sleeves are provided with texture flat plates for increasing friction force with the floor. The cooperation of left baseboard and right baseboard and abrasionproof gum cover can increase the area of contact and the buffering of desk foot and floor, and the abrasionproof gum cover still can avoid the hard friction with ground, and the abrasionproof gum cover is changed also conveniently to avoided the wearing and tearing of floor, long-term use also can not appear the pit under the long-term repeated friction impact of desk foot because of the floor, and the irreversible damage of cement floor appears.

Further, the length of the square seat board is longer than that of the chair frame, one side of the square seat board is aligned with the side face of the chair frame in the vertical direction, and the other side of the square seat board extends out in a hanging manner from the opposite side face; in the overturning tablet chair, the side surface of the chair frame aligned with the square chair seat board is the right side or the left side provided with the square overturning board; in a buckle tablet chair, the side of the chair frame aligned with the square chair seat board is the left side or the right side provided with buckles.

When the student noon break bed is used, the chairs in the same row are adjacently arranged at intervals according to the sequence of the turnover plate chairs and the hasp chairs, when the student noon break, the square turnover plate of the turnover plate chairs is turned upside down and is inserted on the hasp of the hasp chairs through the right-angle plugboard, and the adjacent turnover plate chairs and the hasp chairs are sequentially connected into a whole to form the noon break bed. The length of the square turning plate is properly selected due to the holding of the square turning plate, the length of the turning plate tablet chair and the hasp tablet chair after being spliced is greatly increased, and the student straightening two-foot support with higher height can be adapted.

From the above, compared with the prior art, the utility model has the following advantages: (1) Therefore, the universal compatibility is good, the heights of the turnover plate tablet chair and the hasp tablet chair can be adjusted according to the heights of students, schools do not need to purchase tablet chairs with various specifications due to different heights of high and low grades of students, only one specification tablet chair needs to be purchased, the management is convenient, and the production of manufacturers is also convenient; (2) The contact area between the chair legs of the turnover plate tablet chair and the hasp tablet chair and the floor is large, the contact area between the turnover plate tablet chair and the floor is large due to the fact that the turnover plate tablet chair and the hasp tablet chair are provided with the anti-abrasion rubber sleeve, the contact area between the turnover plate tablet chair and the floor is large, the contact with the floor is soft, the contact abrasion between the turnover plate tablet chair and the floor is almost reduced to zero, and the cement floor cannot be damaged. (3) the structure is scientific, simple and compact, and is easy to manufacture; the functions are more complete, the use is more convenient and practical; has great popularization value.

Drawings

Fig. 1 is a front view of a swing chair in accordance with a preferred embodiment of the present utility model.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a perspective view of fig. 1.

Fig. 4 is a bottom view of fig. 1.

Fig. 5 is a bottom view of the flip tablet chair with the lower chair frame removed.

Fig. 6 is a front view of a snap-on tablet chair according to a preferred embodiment of the utility model.

Fig. 7 is a left side view of fig. 6.

Fig. 8 is a perspective view of fig. 6.

Fig. 9 is a bottom view of fig. 6.

Fig. 10 is a bottom view of the flip tablet chair with the lower chair frame removed.

Fig. 11 is a front view of the flap and snap chairs spliced to form a "noon break bed".

Reference numerals illustrate: the novel chair comprises a 1-turning plate tablet chair, a 2-hasp tablet chair, a 3-chair frame, a 4-square chair seat plate, a 5-chair foot rest, a 6-backrest frame, 7-hasp, an 8-square turning plate, a 9-hinge, a 10-right angle plugboard, 11-bearing sheets, 12-grooves and 13-upper chair frame; 14-lower chair frame, 15-upper chair leg, 16-front lower foot rest, 17-rear lower foot rest, 18-lower chair leg, 19-cross bar, 20-outer height adjusting hole, 21-left upper foot rest, 22-right upper foot rest, 23-cross support plate, 24-inner height adjusting hole, 25-locating pin, 26-protective rubber sleeve, 27-foot board, 28-left foot board, 29-right foot board, 30-connecting ear, 31-hollow square tube, 32-backboard, 33-wear-proof rubber sleeve, 34-texture flat plate and 35-side cushion block.

Detailed Description

The present utility model and its advantageous technical effects are described in further detail below with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1-11, the noon break tablet chair which is preferably implemented by the utility model and can be spliced adjacently comprises a turnover tablet chair 1 and a hasp tablet chair 2, wherein the main structures of the turnover tablet chair 1 and the hasp tablet chair 2 are the same, and the turnover tablet chair 1 and the hasp tablet chair 2 both comprise a chair frame 3 and a square chair seat plate 4, wherein the chair frame 3 comprises a chair foot rest 5 and a backrest frame 6, the square chair seat plate 4 is arranged on the chair foot rest 5, and the backrest frame 6 is arranged on the rear side of the top of the chair frame 3; the method is characterized in that:

Referring to fig. 2 and 7, the chair leg 5 includes an upper chair frame 13 and a lower chair frame 14, the upper chair frame 13 being provided on the lower chair frame 14 to be up and down liftable;

Referring to fig. 1, a square turning plate 8 is arranged on the right side of the top of a chair foot rest 5 of the turning plate tablet chair 1; the upper edge of the square turning plate 8 is rotatably hinged on the chair foot rest 5 by a hinge 9 by 90 degrees, the lower edge of the square turning plate 8 is provided with a right-angle inserting plate 10, one side of the right-angle inserting plate 10 is fixed on the back surface of the square turning plate 8, and the other side is perpendicular to the edge of the right-angle inserting plate 10;

Referring to fig. 6, a hasp 7 is arranged on the left side of the top of the chair foot rest 5 of the hasp tablet chair 2; the hasp 7 is a bearing sheet 11 with a groove 12 punched in the middle, and the hasp 7 is transversely arranged on the chair leg frame 5; the groove 12 of the bearing sheet 11 is matched with the size of the right-angle plugboard 10, when the square overturning plate 8 is upwards overturned for 90 degrees to be flush with the square chair seat board 4 of the hasp tablet 2 in the splicing process, the right-angle plugboard 10 on the overturning plate tablet chair 1 is downwards inserted into the hasp 7 of the hasp tablet chair 2, and the adjacent overturning plate tablet chair 1 and the hasp tablet chair 2 are connected into a whole to form a noon break bed.

Referring to fig. 1, 3, 6 and 8, preferably, in order to increase the overall stability of the noon break tablet chair, the lower chair frame 14 comprises two lower leg frames, namely a front lower leg frame 16 and a rear lower leg frame 17, respectively, the front lower leg frame 16 and the rear lower leg frame 17 being arranged in a front-to-rear arrangement; each lower foot rest comprises two hollow lower chair legs 18 and a transverse bar 19, and the two lower chair legs 18 are respectively fixed at two ends of the transverse bar 19 to form a side-turning I-shaped structure; referring to fig. 2 and 7, the side wall of the lower chair leg 18 is provided with 2 opposite outer height adjusting holes 20 which are distributed from top to bottom at intervals;

The upper chair frame 13 comprises two upper foot frames, namely a left upper foot frame 21 and a right upper foot frame 22, wherein the left upper foot frame 21 and the right upper foot frame 22 are distributed in a left-right arrangement; each upper foot rest comprises two upper chair feet 15 and a transverse support plate 23 which is transversely arranged, and the two upper chair feet 15 are respectively fixed at the two ends of the bottom of the transverse support plate 23 to form a reverse U-shaped structure; referring to fig. 2 and 7, the side wall of the upper chair leg 15 is provided with a plurality of opposite inner height adjusting holes 24 which are distributed from top to bottom at intervals;

The upper chair leg 15 of the left upper foot rest 21 is sleeved in the lower chair leg 18 of the front lower foot rest 16 from top to bottom, and the upper chair leg 15 of the left upper foot rest 21 is sleeved in the lower chair leg 18 of the rear lower foot rest 17 from top to bottom;

The upper chair leg 15 of the right upper foot rest 22 is sleeved in the lower chair leg 18 of the front lower foot rest 16 from top to bottom, and the upper chair leg 15 of the right upper foot rest 22 is sleeved in the lower chair leg 18 of the rear lower foot rest 17 from top to bottom;

The outer height adjustment holes 20 of the lower leg 18 are coaxially aligned with the corresponding inner height adjustment holes 24 of the upper leg 15, and the lower leg 18 is provided with a positioning pin 25 passing through the outer height adjustment holes 20 and the inner height adjustment holes 24. The positioning pin 25 is a conventional part, and may be a spring pin, a threaded pin formed by a screw and a nut, or a bolt with other structures, specifically, an appropriate positioning pin 25 may be selected according to actual situations, and in this embodiment, a threaded pin is selected. When the chair is used, all the positioning pins 25 can be pulled out according to the needs, the relative heights of the lower chair leg 18 and the upper chair leg 15 are adjusted up and down, the outer height adjusting holes 20 of the lower chair leg 18 and the corresponding inner height adjusting holes 24 of the upper chair leg 15 are simultaneously aligned coaxially, and then the positioning pins 25 are inserted back, so that the height adjustment of the noon break chair can be completed. When the noon break bed is formed by splicing, the turnover plate tablet chair 1 and the hasp tablet chair 2 are matched for use.

Referring to fig. 1, 3 and 6 and 8, the upper ends of the lower legs 18 are preferably nested with protective sleeves 26 for aesthetic and safety protection.

Preferably, in order to reduce the weight and increase the sense of weight without affecting the strength, the lower leg 18, the cross bar 19 and the upper leg 15 are hollow tubes of flat rounded structures made of hard metal materials, and the hollow tubes are covered with a rust-proof layer.

Referring to fig. 4, 5, 9 and 10, preferably, for convenient installation, the chair foot stand 5 is provided with two foot boards 27, namely a left foot board 28 and a right foot board 29, wherein the left foot board 28 and the right foot board 29 are distributed on the left side and the right side of the bottom of the chair foot stand 5 in a left-right trend; the transverse support plate 23 of the upper chair leg 15 is a hollow square tube 31 made of hard metal material, and the hollow tube is covered with a rust-proof layer; the hollow square tube 31 is provided with a plurality of connecting lugs 30 for the self-tapping screws to pass through, and the square chair plate 4 is fixed on the chair foot rest 5 by the self-tapping screws passing through the connecting lugs 30.

Preferably, the backrest frame 6 comprises two hollow square tubes 31 with round guide angles, the two hollow square tubes 31 are respectively connected with the rear ends of the left baseboard 28 and the right baseboard 29 into a whole, the backrest frame 6 is provided with a backrest plate 32 on the front side, the hollow square tubes 31 are provided with a plurality of connecting lugs 30 for self-tapping screws to pass through, the backrest plate 32 is fixed on the backrest frame 6 through the connecting lugs 30 by self-tapping screws, and the hollow square tubes 31 are covered with a rust-proof layer. In this embodiment, the backboard 32, the square flap 8, and the square seat board 4 are all preferably made of wood material.

Preferably, in order to reduce hard contact buffering and sliding between the noon break tablet and the floor, both ends of the left foot plate 28 and the right foot plate 29 are provided with an anti-wear rubber sleeve 33, and the bottom of the anti-wear rubber sleeve 33 is provided with a texture flat plate 34 for increasing friction with the floor.

Preferably, in order to facilitate the splicing and not to affect the layout of the parts of the noon break tablet chair, the length of the square seat board 4 is greater than that of the chair frame 3, one side of the square seat board 4 is aligned with the side face of the chair frame 3 in the vertical direction, and the other side of the square seat board 4 is suspended and extended from the opposite side face; in the turnover tablet chair 1, the side surface of the chair frame 3 aligned with the square chair seat board 4 is the right side provided with the square turnover board 8; in the buckle tablet 2, the side of the seat frame 3 aligned with the square seat plate 4 is the left side provided with buckles 7.

Referring to fig. 1, 5 and 6 and 10, preferably, in order to reduce the cross-sectional size of the cross-brace plate 23 of the upper leg 15, the hinge 9 and the buckle 7 are engaged on the left-outer side of the foot rest 5 by means of lateral spacers 35, saving material.

Preferably, the number of the hinges 9 on the panel turnover tablet chair 1 is 2, and the 2 hinges 9 are distributed on the left side of the back surface of the lower part of the square panel turnover 8 at intervals; correspondingly, the number of the buckles 7 on the buckle tablet chair 2 is 2, and the 2 buckles 7 are distributed at intervals on the right side of the chair foot rest 5; the edges of the right-angle plugboards 10 and the corners of the bearing sheets 11 are smooth transition angles.

Referring to fig. 11, the splicing and dismantling method of the noon break bed is as follows: the chairs in the same row are adjacently arranged at intervals according to the sequence of the turning plate chair 1 and the hasp chair 2, and one side of a square turning plate 8 arranged on the turning plate chair 1 is arranged opposite to one side of a hasp 7 arranged on the hasp chair 2; when students are in noon break, the square turning plate 8 of the turning plate tablet chair 1 is turned upside down and is inserted on the hasp 7 of the hasp tablet chair 2 through the right-angle inserting plate 10, and the adjacent turning plate tablet chair 1 and the hasp tablet chair 2 are sequentially connected into a whole to form a noon break bed. Due to the holding of the square turning plate 8, the length of the square turning plate 8 is properly selected, the length of the turning plate tablet chair 1 and the hasp tablet chair 2 after being spliced is greatly increased, and the student straightening two-foot support with higher height can be adapted. The desk is matched with a noon break desk which can be spliced by a neighboring desk and applied by the applicant, so that the problem of noon break sleeping tools of students in a class room is perfectly solved.

The utility model is not limited to the embodiments disclosed and described above, but rather, it is intended to cover modifications and variants of the utility model which fall within the scope of the appended claims, depending on the description and the specific examples.

Claims (10)

1. The noon break tablet chair comprises a turning plate tablet chair and a hasp tablet chair which are adjacently spliced, wherein the main structures of the turning plate tablet chair and the hasp tablet chair are the same, the turning plate tablet chair and the hasp tablet chair both comprise a chair frame and a square chair seat plate, the chair frame comprises a chair foot rest and a backrest frame, the square chair seat plate is arranged on the chair foot rest, and the backrest frame is arranged on the rear side of the top of the chair frame; the method is characterized in that:

the chair leg comprises an upper chair frame and a lower chair frame, and the upper chair frame is arranged on the lower chair frame in a lifting manner;

A square turning plate is arranged on the right side or the left side of the top of the chair foot rest of the turning plate tablet chair; the upper edge of the square turning plate can be hinged on the chair foot rest in a 90-degree rotation way through a hinge, the lower edge of the square turning plate is provided with a right-angle inserting plate, one side of the right-angle inserting plate is fixed on the back surface of the square turning plate, and the other side of the right-angle inserting plate is perpendicular to the edge of the right-angle inserting plate;

a hasp is arranged on the left side or the right side of the top of the chair foot rest of the hasp tablet chair; the hasp is a bearing sheet with a groove punched in the middle and is transversely arranged on the chair foot rest; the groove of the bearing sheet is matched with the size of the right-angle plugboard, when the bearing sheet is spliced, the square overturning plate is upwards overturned for 90 degrees to be flush with the square chair seat board of the hasp tablet chair, the right-angle plugboard on the overturning plate tablet chair is downwards inserted into the hasp of the hasp tablet chair, and the adjacent overturning plate tablet chair and the hasp tablet chair are connected into a whole to form a noon break bed.

2. The adjacently applicable noon break tablet chair of claim 1, characterized in that: the lower chair frame comprises two lower foot frames, namely a front lower foot frame and a rear lower foot frame, wherein the front lower foot frame and the rear lower foot frame are arranged in a front-rear manner; each lower foot rest comprises two hollow lower chair legs and a transverse bar, and the two lower chair legs are respectively fixed at two ends of the transverse bar to form a side-turning I-shaped structure; the side wall of the lower chair leg is provided with 1-2 opposite outer height adjusting holes which are distributed from top to bottom at intervals;

The upper chair frame comprises two upper foot frames, namely a left upper foot frame and a right upper foot frame, which are distributed in a left-right arrangement; each upper foot rest comprises two upper chair feet and a transverse support plate which is transversely arranged, and the two upper chair feet are respectively fixed at the two ends of the bottom of the transverse support plate to form a reverse U-shaped structure; the side wall of the upper chair leg is provided with a plurality of opposite inner height adjusting holes which are distributed at intervals from top to bottom;

the upper chair leg of the left upper foot rest is sleeved and inserted in the lower chair leg of the front lower foot rest from top to bottom, and the upper chair leg of the left upper foot rest is sleeved and inserted in the lower chair leg of the rear lower foot rest from top to bottom;

The front upper chair leg of the right upper foot rest is sleeved and inserted into the right lower chair leg of the front lower foot rest from top to bottom, and the rear upper chair leg of the right upper foot rest is sleeved and inserted into the right lower chair leg of the rear lower foot rest from top to bottom;

The outer height adjusting holes of the lower chair leg are coaxially aligned with the corresponding inner height adjusting holes of the upper chair leg, and the lower chair leg is provided with a positioning pin penetrating through the outer height adjusting holes and the inner height adjusting holes.

3. The adjacently applicable noon break tablet chair of claim 2, characterized in that: the upper end part of the lower chair leg is nested with a protective rubber sleeve.

4. The adjacently applicable noon break tablet chair of claim 2, characterized in that: the lower chair leg, the cross bar and the upper chair leg are hollow tubes with flat round corner structures made of hard metal materials, and rust-proof layers are coated outside the hollow tubes.

5. The adjacently applicable noon break tablet chair of claim 2, characterized in that: the chair foot rest is provided with two foot boards, namely a left foot board and a right foot board, which are distributed on the left side and the right side of the bottom of the chair foot rest in a left-right trend; the transverse support plate of the upper chair leg is a hollow square tube made of hard metal material, and the hollow tube is coated with a rust-proof layer; the hollow square tube is provided with a plurality of connecting lugs for the self-tapping screws to pass through, and the square chair plate is fixed on the chair foot rest through the self-tapping screws passing through the connecting lugs.

6. The adjacently applicable noon break tablet chair according to claim 5, characterized in that: the back rest comprises two hollow square tubes with round guide angles, the two hollow square tubes are connected with the rear ends of a left baseboard and a right baseboard respectively to form a whole, the front side of the back rest is provided with a back rest plate, the hollow square tubes are provided with a plurality of connecting lugs for self-tapping screws to pass through, the back rest plate is fixed on the back rest through the connecting lugs, and the hollow square tubes are coated with a rust-proof layer.

7. The adjacently applicable noon break tablet chair according to claim 6, characterized in that: the anti-abrasion rubber sleeves are arranged at the two ends of the left floor board and the right floor board respectively, and texture flat plates for increasing friction force with the floor are arranged at the bottoms of the anti-abrasion rubber sleeves.

8. The adjacently spliced noon break tablet chair of any one of claims 1-7, further characterized by: the length of the square seat board is longer than that of the chair frame, one side of the square seat board is aligned with the side face of the chair frame in the vertical direction, and the other side of the square seat board extends out in a hanging manner from the opposite other side; in the overturning tablet chair, the side surface of the chair frame aligned with the square chair seat board is the right side or the left side provided with the square overturning board; in a buckle tablet chair, the side of the chair frame aligned with the square chair seat board is the left side or the right side provided with buckles.

9. The adjacently applicable noon break tablet chair of claim 8, characterized in that: the hinge and the hasp are connected to the left outer side or the right outer side of the chair foot rest through the lateral cushion block.

10. The adjacently applicable noon break tablet of claim 9, characterized in that: the number of the hinges on the panel turnover tablet chair is 2, and the 2 hinges are distributed on the left side or the right side of the back surface of the lower part of the square panel turnover at intervals; correspondingly, the number of the buckles on the buckle tablet chair is 2, and the 2 buckles are distributed on the right or the left of the foot rest of the chair at intervals; and the edges of the right-angle plugboards and the corners of the bearing sheets are smooth transition angles.