CN217592374U - Foldable multifunctional single chair - Google Patents

Abstract

The utility model relates to a foldable multifunctional single chair, including chair frame seat, hinge frame, foot shelf and support frame, the support frame sets up the bottom at the chair frame seat, and the hinge frame includes backup pad, first articulated slab and second articulated slab, and first articulated slab is articulated with foot shelf and backup pad respectively, and the second articulated slab is connected with chair frame seat and backup pad respectively, and first arc hole and second arc hole have been seted up respectively to the backup pad both ends, and first articulated slab is provided with first fixed block, and the second articulated slab is provided with the second fixed block. When a user lies on the single chair, the user abuts the first fixing block against one side of the first arc-shaped hole, and then the second fixing block abuts against the side wall, close to the ground, of the second arc-shaped hole; when the user sits, the user rotates the backup pad earlier and makes first fixed block and the lateral wall butt that ground was kept away from in first arc hole, and the second fixed block keeps away from the lateral wall butt on ground with second arc hole when rotating the second articulated slab after that, has improved the suitability of single chair.

Description

Foldable multifunctional single chair

Technical Field

The application relates to the technical field of household single chairs, in particular to a foldable multifunctional single chair.

Background

In daily life, a single chair is one of furniture which is commonly used by people, the single chair only can bear one person as the name implies, and a user sits on the single chair to work or rest. The single chair is generally divided into two types, one type is a common single chair, a user can only sit on the single chair, and the other type is a single chair for lying, and the user can lie on the single chair.

At present, single chair includes skeleton and bed course, and the skeleton is wrapped up by the bed course, and the bed course generally adopts the sponge, installs the protective layer outside the bed course, and the protective layer can be genuine leather or looped fabric with the bed course protective layer. The skeleton adopts L type skeleton, and L type skeleton includes vertical skeleton and horizontal skeleton, and vertical skeleton is installed at the top of horizontal skeleton. The vertical frame of the conventional single chair is used to contact the back of the user, and the horizontal frame is used to support the buttocks and thighs of the user. The horizontal skeleton of the lying single chair is long, and can support the crus and even the feet of the user, support the lower body of the user and enable the user to lie on the lying single chair.

In view of the above-mentioned related art, the inventors found that the following drawbacks exist: ordinary single chair can only be sat and can't let the user lie, and the single chair of lying can let the user lie, but the back can't support on horizontal skeleton when the user sits on the single chair of lying for the form function of single chair is single relatively, and the functionality is relatively poor, makes the user need prepare the single chair of a plurality of different functions, leads to single chair suitability relatively poor.

SUMMERY OF THE UTILITY MODEL

In order to improve the suitability of single chair, this application provides a collapsible multi-functional single chair.

The application provides a foldable multifunctional single chair adopts following technical scheme:

the utility model provides a collapsible multi-functional single chair, includes chair frame seat, hinge mount, foot shelf and support frame, the support frame sets up the bottom at the chair frame seat, the hinge mount includes backup pad, first articulated slab and second articulated slab, the one end and foot shelf fixed connection, the other end of first articulated slab are articulated with the backup pad, the one end and the chair frame seat fixed connection of second articulated slab, the other end are articulated with the backup pad, first arc hole has been seted up to the one end of backup pad, the second arc hole has been seted up to the other end, the fixed first fixed block that is provided with on the lateral wall of first articulated slab, first fixed block sliding connection is downthehole at first arc, the fixed second fixed block that is provided with on the lateral wall of second articulated slab, second fixed block sliding connection is downthehole at the second arc.

Through adopting the technical scheme, when the user lies on single chair, the user rotates the backup pad earlier and makes first fixed block and the lateral wall butt that first arc hole is close to ground, rotate the second articulated slab afterwards and make second fixed block and the lateral wall butt that second arc hole is close to ground, thereby will put foot rest and hinge mount and be located same water flat line, when the user sits, the user rotates the backup pad earlier and makes first fixed block and the lateral wall butt that first arc hole kept away from ground, the lateral wall butt that ground was kept away from to second fixed block and second arc hole when rotating the second articulated slab afterwards, fold the foot rest, the user sits on the foot rest, the user turns over a foot rest convenience, realize that single chair satisfies the function of sitting and lying, the suitability of single chair has been improved.

Optionally, the both ends of backup pad are fixed respectively and are provided with third fixed block and fourth fixed block, third arc hole has been seted up on the lateral wall of first articulated slab, fourth arc hole has been seted up on the lateral wall of second articulated slab, third fixed block sliding connection is downthehole at the third arc, fourth fixed block sliding connection is downthehole at the fourth arc, during the lateral wall butt in first fixed block and first arc hole, the lateral wall butt in third fixed block and third arc hole, during the lateral wall butt in second fixed block and second arc hole, the lateral wall butt in fourth fixed block and fourth arc hole.

Through adopting above-mentioned technical scheme, when the lateral wall butt in first fixed block and first arc hole, the lateral wall butt in third fixed block and third arc hole, when the lateral wall butt in second fixed block and second arc hole, the lateral wall butt in fourth fixed block and fourth arc hole improves area of contact between first articulated slab, second articulated slab and the backup pad, improves the bearing capacity.

Optionally, the support frame includes a support rod and a base, the support rod is rotatably connected with the chair frame seat, and the base is fixedly connected with the support rod.

By adopting the technical scheme, when a user uses the base, the supporting rod can be rotated to enable the base to rotate relative to the ground, and the applicability is improved.

Optionally, a bending portion is arranged on the seat frame seat, and one end, far away from the seat frame seat, of the bending portion is hinged to the first hinge plate.

Through adopting above-mentioned technical scheme, the kink carries out auxiliary stay to user's back, improves the comfort level.

Optionally, a worm wheel is coaxially and fixedly arranged on the hinging shaft of the second hinging plate and the supporting plate, a worm is meshed on the worm wheel, and a rotating disc is coaxially and fixedly arranged on the worm wheel.

Through adopting above-mentioned technical scheme, when the user adjusted the angle of foot rest, the user rotated the rolling disc, and the rolling disc passes through the worm and drives the worm and rotate for the angle of second articulated slab between for the backup pad changes, and the user can improve the suitability through the angle of rotating the rolling disc and adjusting the foot rest.

Optionally, the outer side wall of the rotating disc is provided with anti-slip grooves at intervals along the circumferential direction of the rotating disc.

Through adopting above-mentioned technical scheme, the area of contact of user and rolling disc is improved in the antiskid groove, improves anti-skidding effect.

Optionally, the foot shelf includes first link, second link and third link, the both ends of second link are connected with first link and third link respectively, the sliding tray has all been seted up to the one end that first link and third link are close to each other, sliding connection is in the sliding tray of first link and second link respectively at the both ends of second link, first link and second articulated slab fixed connection.

Through adopting above-mentioned technical scheme, the both ends difference sliding connection of second link makes the length of foot rest scalable in the sliding tray of first link and second link, and the convenience is used the user of different heights, improves the suitability.

Optionally, limiting plates are arranged at two ends of the second connecting frame, limiting grooves are formed in the side walls of the sliding grooves, and the limiting plates are connected in the limiting grooves in a sliding mode along the depth direction of the sliding grooves.

Through adopting above-mentioned technical scheme, two limiting plates restrict the both ends of second link respectively in first link and third link, effectively avoid second link and first link and third link separation, improve the stability that second link, second link and third link are connected.

Optionally, a corrugated pipe is arranged between the first connecting frame and the third connecting frame, the second connecting frame is coaxially sleeved in the corrugated pipe, and the corrugated pipe is telescopic along the length direction of the corrugated pipe.

By adopting the technical scheme, the corrugated pipe seals a gap between the first connecting frame and the third connecting frame, so that the third connecting frame cannot be contacted with the first connecting frame due to the fact that sundries are adhered to the second connecting frame is effectively avoided.

Optionally, a magnetic member for attracting the first connecting frame is arranged on the third connecting frame.

Through adopting above-mentioned technical scheme, the third link passes through the magnetism spare and adsorbs on first link, connects third link and first link and separates the convenience.

In summary, the present application includes at least one of the following beneficial technical effects:

the user rotates the supporting plate and the second hinged plate, the foot rest and the hinged frame can be positioned on the same horizontal line or the foot rest can be folded, the user can conveniently turn over the foot rest, the single chair can meet the sitting and lying functions, and the applicability of the single chair is improved;

when the first fixing block abuts against the side wall of the first arc-shaped hole, the third fixing block abuts against the side wall of the third arc-shaped hole, and when the second fixing block abuts against the side wall of the second arc-shaped hole, the fourth fixing block abuts against the side wall of the fourth arc-shaped hole, so that the contact area among the first hinged plate, the second hinged plate and the supporting plate is increased, and the bearing capacity is improved;

when the user adjusted the angle of foot rest, the user rotated the rolling disc, and the rolling disc passes through the worm and drives the worm rotation for the angle of second articulated slab between for the backup pad changes, and the user can improve the suitability through the angle of rotating the rolling disc regulation foot rest.

Drawings

Fig. 1 is a schematic view of the overall structure of a foldable multifunctional single chair in embodiment 1 of the present application.

Fig. 2 is a schematic view of the hinge frame connection structure in a single-seat folded state according to embodiment 1 of the present application.

Fig. 3 is a schematic view of a hinge bracket connection structure in a single-seat open state according to embodiment 1 of the present application.

Fig. 4 is an exploded view of the foldable multifunctional single chair according to embodiment 1 of the present application.

Fig. 5 is a structural view of an opened state of the foldable multifunctional single chair with a filling layer and a protective layer installed thereon according to embodiment 1 of the present application.

Fig. 6 is a structural view of a folded state of the foldable multifunctional single chair after a filling layer and a protective layer are installed in the foldable multifunctional single chair according to embodiment 1 of the present application.

Fig. 7 is a schematic view of the overall structure of the foldable multifunctional single chair in embodiment 2 of the application.

Fig. 8 is a partially enlarged schematic view of a portion a in fig. 7.

Fig. 9 is a schematic view of the overall structure of the foldable multifunctional single chair in embodiment 3 of the application.

Fig. 10 is a partial sectional view of a foot shelf according to embodiment 3 of the present application.

Description of reference numerals: 1. a seat frame seat; 2. a hinge frame; 21. a support plate; 22. a first hinge plate; 23. a second hinge plate; 3. a foot shelf; 31. a first connecting frame; 32. a second link frame; 33. a third connecting frame; 34. a sliding groove; 4. a support frame; 41. a support bar; 42. a base; 5. a first arcuate aperture; 6. a second arcuate aperture; 7. a first fixed block; 8. a second fixed block; 9. a third fixed block; 10. a fourth fixed block; 11. a third arcuate aperture; 12. a fourth arcuate aperture; 13. a bending section; 14. a worm gear; 15. a worm; 16. rotating the disc; 161. an anti-slip groove; 17. a limiting plate; 18. a limiting groove; 19. a bellows; 20. a magnetic member.

Detailed Description

The present application is described in further detail below with reference to figures 1-10.

The embodiment of the application discloses collapsible multi-functional single chair.

Example 1:

referring to fig. 1, the single chair includes a chair frame seat 1, a hinge bracket 2, a foot shelf 3, and a support bracket 4, and the support bracket 4 is installed at the bottom of the chair frame seat 1. The hinged bracket comprises a supporting plate 21, a first hinged plate 22 and a second hinged plate 23, one end of the first hinged plate 22 is fixedly connected with a foot shelf 3, the other end of the first hinged plate is hinged with the supporting plate 21, one end of the second hinged plate 23 is fixedly connected with a chair frame seat 1, the other end of the second hinged plate is hinged with the supporting plate 21, the other end of the second hinged plate 23 is fixedly connected with the chair frame seat 1, the other end of the second hinged plate is hinged with the supporting plate 21, a first arc-shaped hole 5 is formed in one end of the supporting plate 21, a second arc-shaped hole 6 is formed in the other end of the supporting plate 21, a first fixing block 7 is fixedly mounted on the side wall of the first hinged plate 22, the first fixing block 7 is slidably connected in the first arc-shaped hole 5, a second fixing block 8 is fixedly mounted on the side wall of the second hinged plate 23, and the second fixing block 8 is slidably connected in the second arc-shaped hole 6.

When the user lies on single chair, the user rotates backup pad 21 and makes first fixed block 7 and the lateral wall butt that first arc hole 5 is close to ground, rotate second articulated slab 23 and make second fixed block 8 and the lateral wall butt that second arc hole 6 is close to ground after that, thereby be located same water flat line with foot rest and hinge mount 2, the user can lie on foot shelf 3 and hinge mount 2, when the user sits, the user rotates backup pad 21 earlier and makes first fixed block 7 and the lateral wall butt that first arc hole 5 kept away from ground, second fixed block 8 and the lateral wall butt that second arc hole 6 kept away from ground when rotating second articulated slab 23 after that, fold the foot rest, the user sits on the foot rest, the user turns over the foot rest and makes things convenient for, realize that single chair satisfies the function of sitting and lying, single chair's suitability has been improved.

Referring to fig. 1, the chair frame seat 1 is made of alloy materials, the chair frame seat 1 comprises a U-shaped rod and a plurality of butt-joint rods, and the butt-joint rods are welded on the inner side wall of the U-shaped rod at intervals along the length direction of the U-shaped rod.

Referring to fig. 1 and 2, a bent portion 13 is integrally formed at the bottom of the U-shaped rod of the seat frame 1, the bent portion 13 is bent in a direction away from the hinge frame 2, and one end of the bent portion 13 away from the seat frame 1 is hinged to the first hinge plate 22. The bending part 13 assists in supporting the back of the user, so that the comfort level of the user using the single chair is improved.

Referring to fig. 2 and 3, the hinge bracket 2 is made of an alloy material, and the hinge bracket 2 supports the buttocks, legs and feet of a user so that the lower body of the user lies on the single chair. In the present embodiment, the hinge bracket 2 is formed by stamping a 5mm cold-rolled steel plate. Two supporting plates 21 are arranged at intervals along the width direction of the single chair, and a connecting plate is welded between the two supporting plates 21. Both ends of the support plate 21 are hinged to the first hinge plate 22 and the second hinge plate 23, respectively. The first arc-shaped hole 5 and the second arc-shaped hole 6 are respectively arranged at the top of the support plate 21 and at the ends far away from each other. The lateral walls of the two sides of the first fixing block 7 can be abutted to the lateral walls of the two sides of the first arc-shaped hole 5, and the lateral walls of the two sides of the second fixing block 8 can be abutted to the lateral walls of the two sides of the second arc-shaped hole 6. The rotating angle of the first fixing block 7 in the first arc-shaped hole 5 and the rotating angle of the second fixing block 8 in the second arc-shaped hole 6 are between 75 and 135 degrees, and in the embodiment, the rotating angle of the first fixing block 7 in the first arc-shaped hole 5 and the rotating angle of the second fixing block 8 in the second arc-shaped hole 6 are both 85 degrees.

The two ends of the supporting plate 21 are respectively fixedly provided with a third fixing block 9 and a fourth fixing block 10, the side wall of the first hinged plate 22 is provided with a third arc-shaped hole 11, the side wall of the second hinged plate 23 is provided with a fourth arc-shaped hole 12, the third fixing block 9 is connected in the third arc-shaped hole 11 in a sliding manner, the fourth fixing block 10 is connected in the fourth arc-shaped hole 12 in a sliding manner, when the first fixing block 7 is abutted against the side wall of the first arc-shaped hole 5, the third fixing block 9 is abutted against the side wall of the third arc-shaped hole 11, when the second fixing block 8 is abutted against the side wall of the second arc-shaped hole 6, the fourth fixing block 10 is abutted against the side wall of the fourth arc-shaped hole 12. When the first fixed block 7 is abutted against the side wall of the first arc-shaped hole 5, the third fixed block 9 is also abutted against the side wall of the third arc-shaped hole 11, and when the second fixed block 8 is abutted against the side wall of the second arc-shaped hole 6, the fourth fixed block 10 is also abutted against the side wall of the fourth arc-shaped hole 12, so that the contact area among the first hinged plate 22, the second hinged plate 23 and the support plate 21 is increased, and the bearing capacity of the foot shelf 3 is improved.

Referring to fig. 4, the supporting frame 4 includes a supporting rod 41 and a base 42, and the supporting rod 41 is rotatably connected to the seat frame 1. The base 42 is a circular turntable made of alloy material, and two ends of the support rod 41 are respectively fixedly connected with the chair frame seat 1 and the base 42. When the user uses the single chair, the chair frame seat 1 is rotated, so that the base 42 rotates relative to the ground, and the applicability is improved.

The foot shelf 3 is a U-shaped rod, two ends of the foot shelf 3 are respectively welded with the two second hinged plates 23, when a user lies on the single chair, the user lies on the top of the foot shelf 3, and when the user sits, the user sits and stands on the top of the folded foot shelf 3.

Referring to fig. 1, 5 and 6, in this embodiment, the chair frame seat 1, the hinge frame 2, the leg shelf 3 and the support frame 4 are all wrapped by a filling layer, the filling layer is made of foam, sponge or the like, a protective layer is installed outside the filling layer, the protective layer is made of dermis or knitted fabric, and the filling layer is wrapped by the protective layer.

The implementation principle of the embodiment 1 of the application is as follows: when the user lies on single chair, the user rotates backup pad 21 earlier and makes first fixed block 7 and first arc hole 5 be close to the lateral wall butt on ground, rotate second articulated slab 23 and make second fixed block 8 and second arc hole 6 be close to the lateral wall butt on ground after that, thereby will put foot rest and hinge mount 2 and be located same water flat line, when the user sits the time, the user rotates backup pad 21 earlier and makes first fixed block 7 and first arc hole 5 keep away from the lateral wall butt on ground, second fixed block 8 and the lateral wall butt that second arc hole 6 kept away from ground when rotating second articulated slab 23 after that, fold the foot rest, the user sits on putting the foot rest, the user turns over a foot rest convenience, realize that single chair satisfies the function of sitting and lying, the suitability of single chair has been improved.

Example 2:

referring to fig. 7 and 8, embodiment 2 of the present application differs from embodiment 1 in that a worm wheel 14 is coaxially and fixedly mounted on a hinge shaft of the second hinge plate 23 and the support plate 21, a worm 15 is engaged on the top of the worm wheel 14, and a rotating disc 16 is coaxially and fixedly mounted on the worm wheel 14.

Referring to fig. 7 and 8, a rotating rod is coaxially and fixedly mounted on the worm wheel 14, the rotating rod is simultaneously and fixedly connected with the two second hinge plates 23 and the hinge shaft of the support plate 21, and the worm wheel 14 is meshed with the worm 15. The rotating disc 16 is a circular disc made of plastic, and anti-slip grooves 161 are formed on the outer side wall of the rotating disc 16 at intervals along the circumferential direction of the rotating disc 16.

In this embodiment, the rotary disk 16 protrudes beyond the protective layer. The user can adjust the angle of the foot rest through rotating the rotating disc 16, the user rotates the rotating disc 16, the rotating disc 16 drives the worm 15 to rotate through the worm 15, the angle of the second hinged plate 23 relative to the supporting plate 21 is changed, and the applicability is improved.

Example 3:

referring to fig. 9 and 10, embodiment 2 of the present application is different from embodiment 1 in that the foot shelf 3 is extensible and contractible in a length direction of the foot shelf 3.

Referring to fig. 9 and 10, the leg shelf 3 includes a first connecting frame 31, a second connecting frame 32, and a third connecting frame 33, and the first connecting frame 31, the second connecting frame 32, and the third connecting frame 33 all use a round bar made of a magnetic alloy. Sliding grooves 34 are formed in the ends, close to each other, of the first connecting frame 31 and the third connecting frame 33, the two ends of the second connecting frame 32 are connected in the sliding grooves 34 of the first connecting frame 31 and the second connecting frame 32 in a sliding mode respectively, and the first connecting frame 31 is fixedly connected with the second hinge plate 23.

The two ends of the second connecting frame 32 are integrally formed with limiting plates 17, the side wall of the sliding groove 34 is provided with limiting grooves 18, and the limiting plates 17 are slidably connected in the limiting grooves 18 along the depth direction of the sliding groove 34. The two limiting plates 17 limit the two ends of the second connecting frame 32 in the first connecting frame 31 and the third connecting frame 33 respectively, so that the second connecting frame 32 is effectively prevented from being separated from the first connecting frame 31 and the third connecting frame 33, and the connection stability of the second connecting frame 32, the second connecting frame 32 and the third connecting frame 33 is improved.

Referring to fig. 9 and 10, the bellows 19 is fixedly installed between the first connecting frame 31 and the third connecting frame 33, and the bellows 19 is extendable and retractable along the longitudinal direction of the bellows 19. The interior of the corrugated pipe 19 is hollow and has openings on both sides, and the second connecting frame 32 is coaxially sleeved in the corrugated pipe 19. The bellows 19 seals a gap between the first connecting frame 31 and the third connecting frame 33, thereby effectively preventing the third connecting frame 33 from contacting the first connecting frame 31 due to the adhesion of impurities on the second connecting frame 32.

Referring to fig. 9 and 10, the magnetic member 20 for attracting the first link frame 31 is attached to the third link frame 33. In the present embodiment, the magnetic member 20 is a magnet. The magnetic member 20 is mounted on one end of the third connecting frame 33 close to the first connecting frame 31, the magnetic member 20 can attract the first connecting frame 31, and when the magnetic member 20 is attracted to the first connecting frame 31, the bellows 19 is contracted to the shortest. The third connecting frame 33 is attracted to the first connecting frame 31 through the magnetic member 20, and the user moves the third connecting frame 33 in a direction away from the first connecting frame 31 to separate the magnetic member 20 from the first connecting frame 31, so that the length of the footrest is extended, and the third connecting frame 33 and the first connecting frame 31 are conveniently connected and separated.

When a user lies on the single chair, the third connecting frame 33 is moved to the direction far away from the first connecting frame 31, so that the length of the foot rest is extended, the users with different heights can lie on the single chair conveniently, and the applicability is improved.

In this embodiment, the second link frame 32 is not provided with a filler layer and a protective layer.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. A foldable multifunctional single chair is characterized in that: including chair frame seat (1), hinge mount (2), foot shelf (3) and support frame (4), support frame (4) set up the bottom in chair frame seat (1), the hinge mount includes backup pad (21), first articulated slab (22) and second articulated slab (23), the one end and foot shelf (3) fixed connection, the other end of first articulated slab (22) are articulated with backup pad (21), the one end and chair frame seat (1) fixed connection, the other end of second articulated slab (23) are articulated with backup pad (21), first arc hole (5), second arc hole (6) have been seted up to the one end of backup pad (21), the other end, fixed first fixed block (7) that are provided with on the lateral wall of first articulated slab (22), first fixed block (7) sliding connection is in first arc hole (5), fixed second fixed block (8) that are provided with on the lateral wall of second articulated slab (23), second fixed block (8) sliding connection is in second arc hole (6).

2. The foldable multifunctional single chair according to claim 1, wherein: the both ends of backup pad (21) are fixed third fixed block (9) and fourth fixed block (10) of being provided with respectively, third arc hole (11) have been seted up on the lateral wall of first articulated slab (22), fourth arc hole (12) have been seted up on the lateral wall of second articulated slab (23), third fixed block (9) sliding connection is in third arc hole (11), fourth fixed block (10) sliding connection is in fourth arc hole (12), during the lateral wall butt of first fixed block (7) and first arc hole (5), the lateral wall butt of third fixed block (9) and third arc hole (11), during the lateral wall butt of second fixed block (8) and second arc hole (6), the lateral wall butt of fourth fixed block (10) and fourth arc hole (12).

3. The foldable multifunctional single chair according to claim 1, wherein: the support frame (4) comprises a support rod (41) and a base (42), the support rod (41) is rotatably connected with the chair frame seat (1), and the base (42) is fixedly connected with the support rod (41).

4. The foldable multifunctional single chair according to claim 1, wherein: a bending part (13) is arranged on the chair frame seat (1), and one end, far away from the chair frame seat (1), of the bending part (13) is hinged to the first hinge plate (22).

5. The foldable multifunctional single chair according to claim 1, wherein: and a worm wheel (14) is coaxially and fixedly arranged on the hinging shaft of the second hinging plate (23) and the supporting plate (21), a worm (15) is meshed on the worm wheel (14), and a rotating disc (16) is coaxially and fixedly arranged on the worm wheel (14).

6. The foldable multifunctional single chair according to claim 5, wherein: and anti-skidding grooves (161) are formed in the outer side wall of the rotating disc (16) at intervals along the circumferential direction of the rotating disc (16).

7. The foldable multifunctional single chair according to claim 1 or 5, wherein: foot shelf (3) include first link (31), second link (32) and third link (33), the both ends of second link (32) are connected with first link (31) and third link (33) respectively, sliding tray (34) have all been seted up to the one end that first link (31) and third link (33) are close to each other, sliding tray (34) in sliding tray (34) of first link (31) and second link (32) are sliding connection respectively at the both ends of second link (32), first link (31) and second articulated slab (23) fixed connection.

8. The foldable multifunctional single chair according to claim 7, wherein: limiting plates (17) are arranged at two ends of the second connecting frame (32), limiting grooves (18) are formed in the side walls of the sliding grooves (34), and the limiting plates (17) are connected in the limiting grooves (18) in a sliding mode along the depth direction of the sliding grooves (34).

9. The foldable multifunctional single chair according to claim 7, wherein: be provided with bellows (19) between first link (31) and third link (33), second link (32) coaxial cover is established in bellows (19), bellows (19) are scalable along the length direction of bellows (19).

10. The foldable multifunctional single chair according to claim 7, wherein: the third connecting frame (33) is provided with a magnetic part (20) for adsorbing the first connecting frame (31).

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