CN219396584U - Chair with sitting and standing table - Google Patents

Abstract

The utility model relates to a sitting and standing lying table and chair, which comprises a table top, a chair surface, a chair back and a foundation height adjusting mechanism, wherein the foundation height adjusting mechanism comprises foundation footings, a supporting part arranged on the foundation footings and a foundation top beam arranged above the supporting part, the foundation top beam comprises a chair foundation top beam and a table foundation top beam, two table top form supporting rods are hinged above the table foundation top beam, and the tops of the two table top form supporting rods are respectively hinged on two sides of the lower surface of the table top; the chair seat capable of sliding back and forth is hinged above the chair foundation top beam, the chair back limiting assembly is fixedly connected above the foundation top beam, and the chair back limiting assembly is hinged with the foldable chair back. According to the utility model, the functions of a table top, table legs, a chair surface, chair legs, a chair back, a book hopper and leg supports are folded and combined, so that three use states of a sitting posture, a standing posture and a lying posture of the table and the chair are formed; the lifting mode of the desk and the chair is innovated, and the comfort requirements of people with different heights and different application scenes on sitting postures, standing postures and lying postures are met.

Description

Chair with sitting and standing table

Technical Field

The utility model relates to a table and a chair, in particular to a multifunctional table and a chair for sitting, standing and lying.

Background

At present, the table and chair capable of lying mainly have the following technical schemes:

1. by lifting the tabletop and the table bucket, space is reserved for the front-row seat backrest to fall down, the front-row seat backrest is placed under the rear-row table bucket, and when people in front row lie down, the short distance above the tops of the people is the rear-row table bucket and the tabletop.

The desk and chair with the structure has the following defects:

A. the risk of head collision of people exists in the lying process;

B. when lying down, a heavy object is arranged right above the head, which is afraid of uncomfortable feelings such as falling, depression and the like;

C. as the highest height of the national standard table top is 79cm, the lifting height is limited no matter in the upper direction and the lower direction by adopting the mode of lifting the table top and the table bucket by the sleeve, and the noon break requirement of the crowd with higher height is not met.

2. The chair is a single backrest, and traction support is provided for the backrest by the armrests connected to the upright posts of the chair. The disadvantages of this structure are:

A. the short backrest can not meet the requirements of laying down the whole waist, the back and the head after people with higher heights lie down;

B. the crowd with higher height lays on the shorter backrest, an included angle gap is formed at the waist of the crowd, and the crowd is uncomfortable and can influence the spine health of children after long-term use;

C. the backrest is long, so that the sight of the people at the back row is influenced, and the attractive appearance of the seat and the overall attractive appearance of a classroom are influenced;

D. the length of the handrail is limited, the handrail is long to prevent the passage in the row, the traction supporting force is short, and the stability and the safety are poor.

3. The desk top, the desk bucket and the desk legs of the desk are integrated, and the structure has the following defects:

A. the tabletop cannot be easily lifted, rotated and inclined;

B. the hand-operated screw rod lifting type desk and chair has four lifting systems (two desks and two chairs), so that the cost is increased; the hand screw lifting fittings are easy to damage, and the later maintenance cost is high;

C. the space occupied by the table bucket is gold, so that space competing with the body of the lying posture of the crowd is realized, the comfort level of the crowd with smaller stature is reduced, and the usability of the crowd with larger stature is reduced;

D. the height of the desk bucket is sacrificed, and only the desk bucket in a narrow space can be designed, so that the storage requirements of normally storing schoolbags, textbooks, stationery, noon break carpets and the like cannot be met.

4. The desk and the chair are integrated, and the structure has the following defects:

A. the stability of the chair back after being laid down is maintained by the weight of the row of tables and chairs, the stability is poor, and the chair back is easy to turn over;

B. after the chair backrest is put down, the chair backrest is provided with upward lifting force by means of the combination of the chair upright posts and the armrests, so that the moment is large and the chair backrest is easy to damage;

C. the row distance produced by the table and the chair is fixed, and the row distance cannot be adjusted to meet the placing requirements of the table and the chair according to the actual space size of a classroom and the number of people;

D. the row of tables and chairs are connected, and the inside of the row is a closed space, so that the cleaning is difficult.

5. The disadvantage of the function of noon break realized by a single desk or a single chair is that one of the desks or chairs needs to occupy the aisle position during noon break, the obstacles in the aisle between the columns are more, and potential safety hazards and the like can be formed when emergency evacuation is needed during unexpected events.

6. The relative positions of the seat surfaces of the row spacing fixed tables and chairs cannot be adjusted, and the comfort level of people with different heights and sitting postures cannot be met.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides a sitting, standing and lying multifunctional table and chair, which combines the common functions of a table top, a table bucket, table legs, a chair surface, chair legs, a chair back, a book bucket and leg supports to form three use states of sitting, lying and standing of the table and chair; the lifting mode of the desk and the chair is innovated, and the comfortable space requirements of people with different heights and different application scenes on sitting postures, standing postures and lying postures are met.

The technical scheme adopted by the utility model is as follows:

the utility model provides a sit and stand and lie table chair, includes desktop (21), seat (61), back of the chair (62), basis height adjustment mechanism (1), basis height adjustment mechanism includes basis footing (11), installs the supporting part on basis footing (11) and the basic back timber (18) of supporting part top, basic back timber (18) include chair basic back timber (18-1) and desk basic back timber (18-2), two desktop form bracing pieces (2) are articulated to desk basic back timber (18-2) top, the top of two desktop form bracing pieces (2) articulates in the both sides of the lower surface of desktop (21) respectively; the upper part of the chair foundation top beam (18-1) is hinged with the chair surface (61) capable of sliding back and forth, the upper part of the chair foundation top beam (18-1) is fixedly connected with the chair back limiting assembly (8), and the chair back limiting assembly (8) is hinged with the foldable chair back (62).

Further, the foundation footing (11) is composed of a chair height adjusting mechanism foundation footing (101) and a table height adjusting mechanism foundation footing (101), the supporting part comprises two herringbone supporting rods (12, 13) hinged at the left side and the right side of the two ends of the chair height adjusting mechanism foundation footing (101), the two herringbone supporting rods (12, 13) hinged at the left side and the right side of the two ends of the table height adjusting mechanism foundation footing (102), each two herringbone supporting rods (12, 13) are mutually staggered, one group or two groups of limit sliding grooves (14, 15) are formed in the mutually intersected part, large-head limit bolts (16, 17) for limiting the relative positions of the two herringbone supporting rods (12, 13) are arranged in the limit sliding grooves, the tops of the two herringbone supporting rods (12, 13) hinged at the left side and the right side of the two ends of the chair height adjusting mechanism foundation footing (101) are hinged with a chair foundation top beam (18-1), and the tops of the two herringbone supporting rods (12, 13) hinged at the left side and the right side of the two ends of the table height adjusting mechanism foundation footing (102) are hinged with a table foundation beam (18-2).

Further, each desktop form supporting rod (2) is provided with an upper slide rail (22) and a lower slide rail (23), the upper slide rail (22) is clamped with a desktop angle adjusting mechanism, and the lower slide rail (23) is clamped with a desktop height adjusting mechanism.

Further, desktop angle adjustment mechanism include desktop angle regulation pole (31) of both ends slip in last slide (22), the lower extreme of two desktop angle support poles (32) is fixed connection respectively the both ends of desktop angle regulation pole (31), the top of two desktop angle support poles (32) articulates at desktop (21) lower surface, every desktop form bracing piece last slide (22) in be equipped with a plurality of bayonet sockets, desktop angle regulation pole (31) in set up drive-by-wire adjusting device (4), control angle regulation pole is moved between different stuck points in last slide (22), realizes the regulatory function of desktop angle.

Further, drive-by-wire adjusting device (4) include desktop angle adjusting lever (31) both ends inside cylindrical spacer pin (41) of inserting, spacer pin (41) one end is slided and is inlayed in the bayonet socket of last slide (22) inside, realizes different desktop angle adjustment, spacer pin (41) middle part is provided with reset spring (42), the other end is articulated with acting as go-between (43), acting as go-between pass opening pivot (44) and desktop angle adjusting lever (31) other end spacer pin (41) articulated, opening pivot (44) both ends connecting wire accuse handle (45), rotate drive-by-wire handle (45) and realize both ends spacer pin (41) pull back or reset function.

Further, the desktop height adjusting mechanism comprises desktop height adjusting rods (33) with two ends slidably embedded in the lower slide way (23), one ends of the two desktop height supporting rods (34) are fixedly hinged to two ends of the desktop height adjusting rods (33), the other ends of the two desktop height supporting rods are hinged to the middle of a basic top beam (18-2) of the desk, a plurality of bayonets are arranged in the lower slide way (23), a wire control adjusting device (4) is arranged in the desktop height adjusting rods (33), and the desktop height adjusting rods (33) are controlled to move among different bayonets in the lower slide way (23) to achieve the adjusting function of the desktop height.

Further, drive-by-wire adjusting device (4) include desktop altitude mixture control pole (33) both ends inside cylindrical spacer pin (41) of inserting, spacer pin (41) one end slip is inlayed in the bayonet socket of the inside of slide (23), realizes different desktop altitude mixture control, spacer pin (41) middle part is provided with reset spring (42), the other end is articulated with acting as go-between (43), acting as go-between pass opening pivot (44) and desktop altitude mixture control pole (33) other end spacer pin (41) articulated, opening pivot (44) both ends fixed connection wire accuse handle (45), rotate drive-by-wire handle (45) and realize both ends spacer pin (41) pull back or reset function.

Further, the upper end of the chair back (62) is fixedly connected with a sponge headrest or a headrest (63) wrapped by fabric.

Further, after the basic height adjusting mechanism (1), the table top shape supporting rod (2), the table top height supporting rod (34) and the table top (21) are folded and combined, upward supporting lifting force is provided for the obliquely laid chair back (62), the headrest or the headrest (63) together, so that a combined supporting chair back structure is formed.

Furthermore, a book hopper (71) which can be pushed and pulled back and forth is arranged below the chair surface (61), and a leg support assembly is arranged above the book hopper (71).

Further, the leg support assembly comprises four support rods (72) hinged to two sides of the book hopper (71), the top of each support rod on each side is hinged to a connecting rod (73), a cloth leg support (74) is penetrated on the connecting rod, and the height and the angle of the leg support (74) can be adjusted through the height of the support rods (72).

Further, the multifunctional bookend assembly (5) is clamped and embedded on two sides of the desktop (21), the bookend assembly (5) comprises bookends (51) which are flatly attached to the desktop (21) and are turned up in the middle of the bookend assembly, two sides of the bookends (51) are hinged with a desktop clamping device, the upper end of the desktop clamping device is hinged with a hexagonal nut (53) through a bookend fixing shaft (52), one bottom edge of the hexagonal nut (53) is fixedly connected with the bookends (51), two telescopic sleeves (54, 55) are fixedly connected with the lower end of the desktop clamping device, and springs (56) are nested inside the telescopic sleeves (54, 55).

Further, the chair back limiting assembly (8) comprises two chair back limiting shafts (66, 67) fixedly connected with the chair back outer frame, the two chair back limiting shafts (66, 67) are clamped in limiting slide ways (81) arranged above a chair foundation top beam (18-1), limiting slide blocks (82) are arranged in the limiting slide ways (81), limiting slide grooves (83) are formed in the upper portions of the limiting slide blocks (82), foldable handles (84) are hinged to the tops of the limiting slide blocks (82), the two chair back limiting shafts can move in the limiting slide ways (81) to achieve chair back angle adjustment, and the limiting slide blocks (82) are driven to lift through lifting and pulling the folding handles (84), so that the chair back limiting shafts (66, 67) are locked or unlocked, and the front-back falling or vertical limiting functions of the chair back are achieved.

Further, the independent support chair back mechanism is used for supporting the chair back, the independent support chair back mechanism comprises a drawable headrest bracket (91) inserted into the top of the chair back outer frame, a chair back supporting rod (92) hinged to the middle of the chair back outer frame, and an inverted T-shaped supporting frame (93) hinged to the chair back supporting rod (92), a limiting slide way (94) is arranged at the top end of the inverted T-shaped supporting frame (93), a limiting column (95) is arranged on the chair back supporting rod (92), and the limiting column (95) moves in the limiting slide way (94) at the top end of the inverted T-shaped supporting frame (93) in the backward tilting and falling process of the chair back.

Further, the upper end of the chair back (62) is fixedly connected with a headrest or a headrest (63) wrapped by fabrics, when the chair part is used independently, a headrest bracket (91) is inserted into the upper part of the outer frame of the chair back (62), and the middle part of the chair back is hinged with an inverted T-shaped support frame (93) to form an independent support system of the inclined chair back (62) and the headrest (63).

Further, the upper part of the chair foundation top beam (18-1) is fixedly connected with a seat slide way (64), a seat support slide block (65) is embedded in the seat slide way (64), and the seat support slide block (65) is fixedly connected with the outer surface of the frame of the seat (61).

The technical scheme provided by the utility model has the beneficial effects that:

1. when people are in a sitting state, the desktop function is used, and when people are out of the sitting state, the desktop function is stored and hidden;

when in a sitting posture learning state, the desktop angle can be changed by pushing the handle to push and pull the desktop angle adjusting rod to drive the desktop angle supporting rod to move back and forth, so that the use requirements of people on the optimal desktop inclination angle in different learning scenes such as writing, reading, drawing, painting, music and the like are met.

2. The capacity of the desk bucket is expanded, the requirements of large storage space and convenient storage and taking are met, the desk bucket is combined with a chair, the space under the chair is fully utilized, the desk bucket becomes an independent book bucket, and in addition, the upper part of the book bucket is provided with a support and a fabric which can be used as leg supports.

3. The chair surface can be pushed and pulled, thereby meeting the different requirements of people with different heights on the length of the chair surface in the sitting posture and lying posture.

4. The length of the chair back is prolonged by changing the headrest into a pillow, so that the requirement of the higher-height crowd on the length of the chair back in lying postures is met. The chair back is horizontally placed on the inclined table top, and the chair back is folded and combined by means of the table-chair foundation height adjusting mechanism, the table top form supporting rods, the table top height supporting rods and the table top to provide stable and reliable lifting force for the inclined and laid chair back, so that the combined supporting chair back structure is formed.

5. The leg book holding hoppers are combined together, so that the occupied space is reduced, the storage is convenient, and a clearance is created for the legs and feet to freely enter and exit below the tabletop.

6. Even when the minimum row distance is 85CM, a comfortable lying space can be provided for a crowd with the height of 180CM (the chair back is 80 cm+the row distance is 85 cm+the space of 30CM below the front row of chair surface=195 CM), and even the height of the highest crowd in lying position is far more than that of other schemes when the row distance is 1M; according to the scheme, the height of the people lying down can be higher when the row distance is more than 85cm, and the space is more comfortable.

Compared with other noon break solutions, the desk and chair of the utility model saves more space and meets the requirements of different classes on the lying desk and chair; the production cost is lower, and the expenditure of national education and social education is saved; the operation is more convenient and safer, and the people can get in and out more comfortably in sitting, standing or lying postures.

7. The table or chair can be completely folded, and the total height of the folded table or chair is about 30cm, so that the folded table or chair is convenient to carry in an indoor folding manner or in an outdoor manner.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a multifunctional table and chair for sitting, standing and lying according to the present utility model;

FIG. 2 is a schematic view of a stand-alone chair back support structure for a sitting and lying multifunctional table and chair according to the present utility model;

FIG. 3 is a schematic view of a single table structure of a multifunctional table and chair for sitting, standing and lying according to the present utility model;

FIG. 4 is a schematic view of a book block of a multifunctional table and chair for sitting, standing and lying according to the present utility model;

FIG. 5 is an enlarged view of a portion of FIG. 4 at C;

FIG. 6 is a view showing a state of use of the multifunctional table-chair with sitting, standing and lying in a front-table and rear-chair lying position;

FIG. 7 is a schematic view of a book well and leg rest of a sitting and lying multifunctional table and chair according to the present utility model;

FIG. 8 is a schematic view of a chair back stop mechanism of a sitting and lying multifunctional table and chair according to the present utility model;

FIG. 9 is a partial enlarged view at D of FIG. 8;

FIG. 10 is an enlarged view of a portion of FIG. 8 at E;

FIG. 11 is a view showing a folded storage and use state of a sitting and lying multifunctional table and chair according to the present utility model;

FIG. 12 is a schematic view of the table in the standing position of the present utility model;

fig. 13 is a schematic view showing an operation state of the inclined table top in the standing posture of the table according to the present utility model.

The labels in the figures are as follows:

1-foundation height adjustment mechanism, 2-desktop form bracing piece, 4-drive-by-wire adjustment device, 5-bookend assembly, 8-back stop assembly, 11-foundation footing, 12, 13-chevron bracing piece, 14, 15-limit chute, 16, 17-big head limit bolt, 18-foundation top, 18-1-chair foundation top, 18-2-desk foundation top, 21-desktop, 22-upper slide, 23-lower slide, 31-desktop angle adjustment lever, 32-desktop angle bracing piece, 34-desktop height bracing piece, 41-limit pin, 42-return spring, 43-stay wire, 44-open pivot, 45-drive-by-wire handle, 51-bookend, 52-bookend fixed shaft, 53-hexagonal nut, 54, 55-telescoping sleeve, 56-spring, 61-seat, 62-back, 63-pillow or headrest, 64-seat slide, 65-seat support slide, 66, 67-limit shaft, 71-bookend, 72-bracing piece, 73-connecting rod, 74-leg support, 81-82-seat back support, 82-seat back limit chute, 45-drive-back limit bracket, 51-bookend, 52-seat back support, 53-seat support, 93-seat height adjustment mechanism, seat back support, and support bracket, and support frame.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.

Example 1

As shown in fig. 1-11, the table part of the embodiment comprises a table foundation height adjusting mechanism 1, a table foundation top beam 18-2, a table top form supporting rod 2 hinged above the table foundation top beam 18-2, two table top form supporting rods 2 hinged on two sides of the lower surface of a table top 21 respectively, the table top form supporting rods are provided with an upper slide rail and a lower slide rail, an upper slide rail 22 is embedded with a table top angle adjusting mechanism, a lower slide rail 23 is embedded with a table top height adjusting mechanism, and two sides of the table top 21 are embedded with multifunctional bookend assemblies 5;

as shown in fig. 1-11, the chair part of the embodiment comprises a chair foundation height adjusting mechanism 1, a chair surface 61 capable of sliding back and forth is hinged above a chair foundation top beam 18-1 of the chair foundation height adjusting mechanism 1, a book block 71 capable of being pushed and pulled back and forth is arranged below the chair surface 61, and a leg support assembly is arranged above the book block 71; the upper part of the basic top beam 18 is fixedly connected with a chair back limiting assembly 8, and the chair back limiting assembly is hinged with a folding chair back 62;

as shown in fig. 1-5, the chair part of the present embodiment is in front, and the table part is in back, and after the base height adjusting mechanism 1, the table top form support rod 2, the table top height support rod 34 and the table top 21 are folded and combined, an upward lifting force is provided for the obliquely laid back 62, headrest or headrest 63 together, so as to form a combined support back structure.

As shown in fig. 1 to 11, the foundation height adjusting mechanism 1 of the present embodiment includes a foundation footing 11 composed of a chair height adjusting mechanism foundation footing 101 and a table height adjusting mechanism foundation footing 102 hinged at both ends of the foundation footing, two chevron shaped supporting rods 12, 13 hinged at both sides of the foundation footing, two chevron shaped supporting rods 12, 13 crossing each other, one set or two sets of positioning slide grooves 14 or 15 provided at the crossing portion, large head positioning bolts 16, 17 provided in the slide grooves to define the relative positions of the two chevron shaped supporting rods 12, 13, and a foundation top beam 18 hinged at the top of the two chevron shaped supporting rods. The foundation top beam 18 is lifted or pressed down to the height required by the table and the chair, and the left and right big head limit bolts 16 and 17 on the left side and the right side of the middle part of the foundation height adjusting mechanism are twisted, so that the height adjusting function of the table and the chair can be realized.

As shown in fig. 1-11, the desktop angle adjusting mechanism of this embodiment includes a desktop angle adjusting rod 31 slidably embedded in an upper slide way 21 of a desktop form supporting rod 2, two ends of the desktop angle adjusting rod 31 are fixedly connected with the lower end of a desktop angle supporting rod 32, the top end of the desktop angle supporting rod 32 is hinged to the lower surface of the desktop 21, a plurality of bayonets are arranged in the upper slide way 22 of the desktop form supporting rod, a wire control adjusting device 4 is arranged in the desktop angle adjusting rod 31, and the angle adjusting rod is controlled to move between different clamping points in the upper slide way 22, so that the adjusting function of the desktop angle is realized.

As shown in fig. 1-11, the wire control adjusting device 4 of this embodiment includes a cylindrical limiting pin 41 inserted into two ends of the desktop angle adjusting rod, one end of the limiting pin 41 is slidably inserted into a bayonet in the upper slideway 22 to realize different desktop angle adjustments, a reset spring 42 is disposed in the middle of the limiting pin 41, the other end is hinged with a pull wire 43, the pull wire passes through an opening rotating shaft 44 to be hinged with the limiting pin 41 at the other end of the desktop angle adjusting rod 31, two ends of the opening rotating shaft 44 are fixedly connected with a wire control handle 45, the wire control handle 45 is rotated or loosened, the two ends of the limiting pin 41 are driven to pull back or reset, locking or unlocking sliding of the limiting pin 41 and different bayonets of the upper slideway 22 is realized, and the wire control adjusting mechanism can be used for angle wire control adjustment of a desk and height wire control adjustment of the desk.

As shown in fig. 1-11, the desktop height adjusting mechanism of the embodiment includes a desktop height adjusting rod 33 slidably embedded in a lower slideway 23 of a desktop form supporting rod, two ends of the desktop height adjusting rod 33 are fixedly hinged with two desktop height supporting rods 34, the other ends of the desktop height supporting rods 34 are hinged with the middle part of a basic top beam 18, a plurality of bayonets are arranged in the lower slideway 23, a wire control adjusting device 4 is arranged in the desktop height adjusting rod 33, and the desktop height adjusting rod 33 is controlled to move among different bayonets in the lower slideway 23, so that the adjusting function of the desktop height is realized. The wire control adjusting device 4 has the same structure and function as the wire control adjusting device of the desktop angle adjusting structure.

As shown in fig. 1-11, the bookend assembly 5 of this embodiment includes a bookend 51 horizontally attached to a desktop 21, a bookend 51 turned up in the middle part, two sides of the bookend 51 are hinged to a desktop clamping device, the upper end of the desktop clamping device is hinged to a hexagonal nut 53 through a bookend fixing shaft 52, one bottom edge of the hexagonal nut 53 is fixedly connected to the bookend 51, two telescopic tubes 54, 55 are fixedly connected to the lower end of the desktop clamping device, springs 56 are nested in the telescopic tubes 54, 55, the bookend 51 is kept close to the desktop 21 and unchanged in position by virtue of spring tension, the bookend 51 can slide up and down along the desktop 21 only under the action of external force in the vertical direction, the bookend is adjusted in front and back positions of the desktop by turning up the bookend, and books, music scores, canbe placed on the desktop and canbe pressed.

As shown in fig. 1-11, the upper part of the basic top beam 18 of the present embodiment is fixedly connected with a seat slide 64, a seat support slide block 65 is embedded in the seat slide 64, and the seat support slide block 65 is fixedly connected to the outer surface of the frame of the seat 61, so that the seat can be pushed and pulled back and forth, and different requirements of different heights and different scenes on the length of the seat are met.

As shown in fig. 1-11, the leg support assembly of this embodiment includes four support rods 72 hinged on two sides of the book hopper 71, and a connecting rod 73 is hinged at the top of each support rod, and a cloth leg support 74 is threaded on the connecting rod 73, and the height and angle of the leg support 74 can be adjusted by the height of the support rods 72, so as to meet different requirements of different row pitches, different heights and different angles and heights of the leg support.

As shown in fig. 1-11, the folding chair back assembly of this embodiment includes a chair back 62 hinged by a chair back limiting assembly, the upper end of the chair back 62 is fixedly connected with a sponge headrest 63 wrapped by fabric, which provides comfortable support for the back in sitting position, and the length of the chair back is extended to provide support for the head and shoulders in lying position, so as to ensure that the back and the head of the human body are supported in the same plane.

As shown in fig. 1-11, the chair back limiting assembly 8 of this embodiment includes two chair back limiting shafts 66, 67 fixedly connected to the chair back outer frame, the two chair back limiting shafts are clamped in a limiting slide 81 above the basic top beam 18, a limiting slide 82 is arranged in the limiting slide, a limiting slide slot 83 is arranged on the upper portion of the limiting slide 82, a foldable handle 84 is hinged to the top of the limiting slide, the foldable handle is divided into an upper section and a lower section, is coaxially hinged and extends out of the top end of the limiting slide, and the folding handle is folded or released to drive the limiting slide to adjust the position of the limiting slide in the limiting slide, so that the chair back limiting shafts 66, 67 are locked or unlocked, and the front-back folding and falling or vertical limiting functions of the chair back are realized.

Example two

As shown in FIG. 2, the difference between the present embodiment and the first embodiment is that, as shown in FIG. 2, the seat-standing and lying multifunctional table and chair is the last row or the other rows of classrooms, and an independent support chair back mechanism can be adopted, wherein the independent support chair back mechanism comprises a drawable headrest bracket 91 inserted into the top of a chair back outer frame, a chair back supporting rod 92 hinged to the middle of the chair back outer frame, and an inverted T-shaped supporting frame 93 hinged to the chair back supporting rod 92, a limit slideway 94 is arranged at the top end of the inverted T-shaped supporting frame 93, a limit column 95 is arranged on the chair back supporting rod 92, the limit column 95 moves in the limit slideway 94 at the top end of the inverted T-shaped supporting frame 93 in the backward tilting process of the chair back, so that the chair back supporting mechanism is unfolded and stored, the angle of the limit column 95 is driven by rotating the angle of the chair back supporting rod 92, and the adjustment of the tilting angle of the chair back is realized, and the requirements of people on different reclining chairs are met.

Example III

As shown in fig. 12-13, standing operation:

standing operation: pressing the wire control handle, pushing and pulling the desktop angle adjusting rod to enable the desktop to be attached to the desktop form supporting rod, and rotating the desktop upwards to form a desktop storage standing posture state. At this time, the tabletop is stored and erected, so that the occupation of horizontal high space is reduced, and the inter-row passing comfort level is improved.

Standing and tilting the desktop: pressing the wire control handle, pushing and pulling the desktop angle adjusting rod to the upright posture gradient clamping point of the upper slideway, rotating the desktop upwards, driving the desktop height adjusting rod to the upright posture height bayonet, at the moment, lifting the desktop by the upright posture and forming a desktop inclination angle, wherein the upright posture desktop inclination of 60 degrees is the optimal posture for standing morning reading, drawing and music teaching.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (16)

1. The utility model provides a sit and stand table chair of lying, includes desktop (21), seat (61), back of the chair (62), basis height adjustment mechanism (1), its characterized in that: the foundation height adjusting mechanism comprises foundation footings (11), a supporting part and a foundation top beam (18) arranged above the supporting part, wherein the foundation top beam (18) comprises a chair foundation top beam (18-1) and a table foundation top beam (18-2), two table top form supporting rods (2) are hinged above the table foundation top beam (18-2), and the tops of the two table top form supporting rods (2) are hinged to two sides of the lower surface of a table top (21) respectively; the upper part of the chair foundation top beam (18-1) is hinged with the chair surface (61) capable of sliding back and forth, the upper part of the chair foundation top beam (18-1) is fixedly connected with the chair back limiting assembly (8), and the chair back limiting assembly (8) is hinged with the foldable chair back (62).

2. A sitting and lying table and chair according to claim 1, characterized in that the foundation footing (11) consists of a chair height adjustment mechanism foundation footing (101) and a table height adjustment mechanism foundation footing (102), the support part comprises two herringbone support bars (12, 13) hinged on the left and right sides of the two ends of the chair height adjustment mechanism foundation footing (101), two herringbone support bars (12, 13) hinged on the left and right sides of the two ends of the table height adjustment mechanism foundation footing (102), each two herringbone support bars (12, 13) are mutually staggered, one or two groups of limit sliding grooves (14, 15) are arranged in the mutually intersecting parts, big head limit bolts (16, 17) for limiting the relative positions of the two herringbone support bars (12, 13) are arranged in the limit sliding grooves, the top of the two herringbone support bars (12, 13) hinged on the left and right sides of the two ends of the chair height adjustment mechanism foundation footing (101) are hinged on the top of the two herringbone support bars (18-1), and the two herringbone support bars (12, 13) hinged on the top of the table (2) hinged on the two sides of the two ends of the table height adjustment mechanism foundation footing (102).

3. The sitting, standing and lying table and chair according to claim 1, wherein each table top form supporting rod (2) is provided with an upper slide way (22) and a lower slide way (23), the upper slide way (22) is clamped with a table top angle adjusting mechanism, and the lower slide way (23) is clamped with a table top height adjusting mechanism.

4. A sitting, standing and lying table and chair according to claim 3, characterized in that the table top angle adjusting mechanism comprises table top angle adjusting rods (31) with two ends sliding in the upper slide way (22), the lower ends of the two table top angle supporting rods (32) are respectively and fixedly connected with the two ends of the table top angle adjusting rods (31), the top ends of the two table top angle supporting rods (32) are hinged to the lower surface of the table top (21), a plurality of bayonets are arranged in each table top form supporting rod upper slide way (22), a wire control adjusting device (4) is arranged in each table top angle adjusting rod (31), and the angle adjusting rods are controlled to move between different clamping points in the upper slide way (22) to realize the adjusting function of the table top angle.

5. The sitting and standing lying table and chair according to claim 4, wherein the wire control adjusting device (4) comprises cylindrical limiting pins (41) inserted into two ends of the tabletop angle adjusting rod (31), one ends of the limiting pins (41) are slidably embedded into bayonets in the upper slide way (22) to achieve different tabletop angle adjustment, a reset spring (42) is arranged in the middle of the limiting pins (41), the other ends of the limiting pins are hinged with a stay wire (43), the stay wire penetrates through an opening rotating shaft (44) to be hinged with the limiting pins (41) at the other ends of the tabletop angle adjusting rod (31), connecting wire control handles (45) are fixed at two ends of the opening rotating shaft (44), and the rotating wire control handles (45) achieve the pulling or resetting function of the two-end limiting pins (41).

6. A sitting, standing and lying table and chair according to claim 3, characterized in that the table top height adjusting mechanism comprises a table top height adjusting rod (33) with two ends slidably embedded in the lower slideway (23), one ends of the two table top height supporting rods (34) are fixedly hinged with two ends of the table top height adjusting rod (33), the other ends of the two table top height supporting rods are hinged with the middle part of the table foundation top beam (18-2), a plurality of bayonets are arranged in the lower slideway (23), a wire control adjusting device (4) is arranged in the table top height adjusting rod (33), and the table top height adjusting rod (33) is controlled to move among different bayonets in the lower slideway (23) so as to realize the adjusting function of the table top height.

7. The sitting, standing and lying table and chair according to claim 6, wherein the wire control adjusting device (4) comprises cylindrical limiting pins (41) inserted into two ends of the table top height adjusting rod (33), one ends of the limiting pins (41) are slidably inserted into bayonets in the lower slide way (23), different table top height adjustment is achieved, a reset spring (42) is arranged in the middle of the limiting pins (41), the other ends of the limiting pins are hinged with a stay wire (43), the stay wire penetrates through an opening rotating shaft (44) to be hinged with the limiting pins (41) at the other ends of the table top height adjusting rod (33), connecting wire control handles (45) are fixed at two ends of the opening rotating shaft (44), and the rotating wire control handles (45) achieve the pulling or resetting functions of the two-end limiting pins (41).

8. The sitting, standing and lying table and chair according to claim 6, wherein the upper end of the chair back (62) is connected with a sponge headrest or a headrest (63) wrapped by fabric.

9. The sitting, standing and lying table and chair according to claim 8, wherein the combined support back structure is formed by folding and combining the basic height adjusting mechanism (1), the table top form supporting rod (2), the table top height supporting rod (34) and the table top (21) together to provide upward supporting force for the obliquely laid back (62), the back rest or the headrest (63).

10. The sitting, standing and lying table and chair according to claim 1, wherein a book hopper (71) capable of being pushed and pulled back and forth is arranged below the chair surface (61), and a leg support assembly is arranged above the book hopper (71).

11. The sitting, standing and lying table and chair according to claim 10, wherein the leg support assembly comprises four support rods (72) hinged to two sides of the book hopper (71), the top of each support rod is hinged with a connecting rod (73), the connecting rods are provided with cloth leg supports (74), and the height and angle of the leg supports (74) can be adjusted through the height of the support rods (72).

12. The sitting, standing and lying table and chair according to claim 1, wherein the multifunctional bookend assembly (5) is clamped and embedded on two sides of the table top (21), the bookend assembly (5) comprises bookends (51) which are flatly attached to the table top (21) and are turned up in the middle, two sides of each bookend (51) are hinged with a table top clamping device, the upper end of each table top clamping device is hinged with a hexagonal nut (53) through a bookend fixing shaft (52), one bottom edge of each hexagonal nut (53) is fixedly connected with each bookend (51), the lower end of each table top clamping device is fixedly connected with two telescopic sleeves (54, 55), and springs (56) are nested inside the telescopic sleeves (54, 55).

13. The sitting and standing lying table and chair according to claim 1, wherein the chair back limiting assembly (8) comprises two chair back limiting shafts (66, 67) fixedly connected with the chair back outer frame, the two chair back limiting shafts (66, 67) are clamped and embedded in a limiting slide way (81) arranged above a chair foundation top beam (18-1), a limiting slide block (82) is arranged in the limiting slide way (81), a limiting slide groove (83) is arranged on the upper portion of the limiting slide block (82), a foldable handle (84) is hinged to the top of the limiting slide block (82), the two chair back limiting shafts can move in the limiting slide way (81) to achieve chair back angle adjustment, and the limiting slide block (82) is driven to lift through lifting the folding handle (84), so that the chair back limiting shafts (66, 67) are locked or unlocked, and the front-back falling or vertical limiting function of the chair back is achieved.

14. The sitting and standing lying table and chair according to claim 1, wherein an independent support chair back mechanism is adopted for supporting the chair back, the independent support chair back mechanism comprises a drawable headrest bracket (91) inserted into the top of the chair back outer frame, a chair back supporting rod (92) hinged to the middle of the chair back outer frame, and an inverted-T supporting frame (93) hinged to the chair back supporting rod (92), a limiting slide way (94) is arranged at the top end of the inverted-T supporting frame (93), a limiting column (95) is arranged on the chair back supporting rod (92), and the limiting column (95) moves in the limiting slide way (94) at the top end of the inverted-T supporting frame (93) in the backward tilting and falling process of the chair back.

15. The sitting, standing and lying table and chair according to claim 1, wherein the upper end of the chair back (62) is fixedly connected with a headrest or a headrest (63) wrapped by fabric, and when the chair part is used alone, the upper part of the outer frame of the chair back (62) is inserted with a headrest bracket (91), and the middle part is hinged with an inverted T-shaped supporting frame (93) to form an independent supporting system of the inclined chair back (62) and the headrest (63).

16. The sitting, standing and lying table and chair according to claim 1, wherein the upper part of the chair basic top beam (18-1) is fixedly connected with a seat slide way (64), a seat supporting slide block (65) is embedded in the seat slide way (64), and the seat supporting slide block (65) is fixedly connected with the outer surface of a frame of the seat (61).