CN217243469U - Multifunctional dining chair - Google Patents

Abstract

The utility model discloses a multifunctional dining chair, which comprises a first chair part and a second chair part; the limit structure comprises: a first upward limiting structure disposed between the two first wall structure front portions and the two second wall structure front portions; a second upward limiting structure provided between the two first wall structure rear parts and the two second wall structure rear parts, and/or between the first backrest and the two second wall structure rear parts; the transverse limiting structure is arranged between the front parts of the two first wall structures and the front parts of the two second wall structures; wherein the first upward limiting structure and the second upward limiting structure define the position of the second chair portion in a vertical direction; the transverse limiting structure is used for limiting the position of the second chair part in the transverse direction. The utility model discloses in through first ascending limit structure, second to limiting structure and horizontal limit structure for it is stable to be connected between second chair portion and the first chair portion, and limiting structure is difficult for the fracture.

Description

Multifunctional dining chair

Technical Field

The utility model relates to a technical field of children's thing to sit on especially relates to a multifunctional dining chair.

Background

There are a number of multi-functional child dining chair products in the prior art, which generally comprise two parts, a youth dining chair and a child seat pocket, wherein the youth dining chair can be used for a young child to sit on the high dining chair, and the child seat pocket can be used for a young child to sit on the high dining chair. There are various ways of using the child seat, for example, the child seat and the youth dining chair can be detachably mounted together to form a high chair for young children; the child seat pocket can be detached and combined and fixed with other planes independently, or combined with a supporting seat structure on other planes.

See chinese patent nos. CN101711634B and CN207285732U, and US9101225B 2.

The child seat pocket is generally positioned laterally by a surrounding skirt at the bottom of the seat pocket, or downwardly facing grooves on both side walls of the seat pocket in combination with the upper surface of the young dining chair, and is positioned longitudinally by the skirt or bottom of the seat pocket and the upper surface of the young dining chair, or by the engagement of the top of the skirt or top of the grooves in the side walls of the seat pocket with the upper portions of the side walls of the young dining chair.

However, the design depends on the design of a larger skirt edge and a side wall, so that the whole volume of the child seat pocket is expanded, and the child seat pocket is not beneficial to packaging, storage, transportation and storage; on the other hand, the integral thin-walled skirt or side wall is prone to cause wall structure fracture when stress is concentrated, so that integral use is affected, for example, during assembly, wall materials are prone to fracture due to force direction deflection, and installation between the child seat pocket and the youth dining chair is unstable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a multifunctional dining chair which is stable in structure and not easy to break after being installed.

The technical scheme of the utility model provides a multifunctional dining chair, which comprises a first chair part and a second chair part;

the first chair part comprises a first seating surface, two first wall structures protruding upwards from the outer periphery of the first seating surface and a first backrest for supporting the back of a child;

the second chair part comprises two second wall structures and a second backrest for supporting the back of the child;

the second chair part can be detachably arranged on the first chair part,

when the second chair part is arranged on the first chair part, a limiting structure is arranged between the second chair part and the first chair part, so that the second chair part is positioned at the upper part of the first chair part;

the limit structure comprises:

a first upward confinement structure disposed between the two first wall structure forward portions and the two second wall structure forward portions;

a second upward limiting structure provided between the two first wall structure rear parts and the two second wall structure rear parts, and/or between the first backrest and the two second wall structure rear parts;

the transverse limiting structure is arranged between the front parts of the two first wall structures and the front parts of the two second wall structures;

wherein the first upward limiting structure and the second upward limiting structure define the position of the second chair portion in a vertical direction; the transverse limiting structure is used for limiting the position of the second chair part in the transverse direction.

Further, the first upward limiting structure comprises a first upper platform disposed on the first wall structure and a first lower platform disposed on the second wall structure, the first upper platform providing upward supporting force for the first lower platform.

Further, the second upward limiting structure comprises a second upper platform disposed on the first wall structure or the first backrest, and a second lower platform disposed on the second wall structure, the second upper platform providing upward support force for the second lower platform.

Further, the horizontal limit structure comprises two wall clamping structures arranged on two sides of the front portion of the second wall structure, and the wall clamping structures are respectively abutted against the corresponding first wall structures to limit the horizontal displacement of the second chair portion.

Furthermore, the limiting structure further comprises a locking structure arranged between the inside of the two first wall structures and the outside of the two second wall structures, the locking structure comprises a sliding part and a first locking hook part, and the sliding part drives the first locking hook part to lock or unlock the first wall structures and the second wall structures.

Further, the second seat portion may also include a second seating surface that is smaller than the first seating surface, the second seat portion being mounted on the first seat portion such that the second seating surface is disposed higher than the first seating surface.

Further, the slider is mounted on a bottom surface opposite the second seating surface, the slider being connected to the first latch hook at the second wall structure.

Further, still include bearing structure, bearing structure can support on ground, and bearing structure and first chair portion detachable are connected or fixed connection or integrated into one piece.

Further, still include the setting in the second chair portion with the locking structure between the bearing structure, the locking structure includes setting element and second latch hook spare.

Further, after the second chair part and the first chair part are installed, the second backrest is located above the first backrest, and the locking structure is arranged between the second backrest and the supporting structure.

After adopting above-mentioned technical scheme, have following beneficial effect:

the utility model discloses in through the first anterior position that upwards limit structure limited second chair portion in vertical direction, limit structure limits the rear portion position of second chair portion in vertical direction through the second upwards, still transversely inject the position of second chair portion through horizontal limit structure, increased and limited the position of second chair portion for it is stable to be connected between second chair portion and the first chair portion, and limit structure is difficult for splitting.

Drawings

The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:

fig. 1 is a perspective view of a multifunctional dining chair according to an embodiment of the present invention;

FIG. 2 is a perspective view of a first chair portion and support structure in an embodiment of the invention;

FIG. 3 is a perspective view of a second chair portion according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of the first chair portion and the second chair portion after being assembled according to an embodiment of the present invention;

FIG. 5 is a partial enlarged view of a first upward limiting structure according to an embodiment of the present invention;

fig. 6 is a partial enlarged view of the second upward limiting structure and the lateral limiting structure according to an embodiment of the present invention;

fig. 7 is a partial enlarged view of a locking structure according to an embodiment of the present invention;

FIG. 8 is a perspective view of a first chair portion according to an embodiment of the present invention;

fig. 9 is a partially enlarged view of the second chair section and the support structure according to another embodiment of the present invention.

Reference symbol comparison table:

support structure 1: a first support rod 12, a second support rod 13 and a locking joint 14;

first seat portion 2: the first seating surface 21, the first wall structure 22, the first backrest 24, the first locking slot 25;

the second seat portion 3: a second seating surface 31, a second wall structure 32, a second backrest 34, a floor 35;

the locking structure 4: an operating member 41, a first latch hook member 42, a positioning member 43, a second latch hook member 44, a slider 45, a positioning hole 431, a positioning pin 432, a positioning block 433, a positioning plate 434;

first upward limiting structure 6: a first upper stage 61, a first lower stage 62;

second upward confinement structure 7: a second upper stage 71, a second lower stage 72;

horizontal limit structure 8: a slot 81 and a double-wall structure 82.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings.

It is easily understood that, according to the technical solution of the present invention, a plurality of structural modes and implementation modes that can be mutually replaced by those of ordinary skill in the art can be achieved without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are only exemplary illustrations of the technical solutions of the present invention, and should not be construed as limiting or restricting the technical solutions of the present invention in its entirety or as a limitation of the present invention.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.

The first embodiment is as follows:

referring to fig. 1-8, a multi-functional dining chair according to an embodiment of the present invention is shown.

A multifunctional dining chair, comprising a first chair part 2 and a second chair part 3;

the first seat portion 2 comprises a first seating surface 21, two first wall structures 22 projecting upwardly from the outer periphery of the first seating surface 21, and a first backrest 24 for supporting the back of a child;

a second seat portion 3 comprising two second wall structures 32 and a second backrest 34 for supporting the back of the child;

the second seat portion 3 is detachably mounted on the first seat portion 2,

when the second chair part 3 is arranged on the first chair part 2, a limit structure is arranged between the first chair part and the second chair part so that the second chair part 3 is positioned at the upper part of the first chair part 2;

limit structure includes:

a first upward limiting structure 6 arranged between the front portions of the two first wall structures 22 and the front portions of the two second wall structures 32;

a second upward limiting structure 7 arranged between the rear of the two first wall structures 22 and the rear of the two second wall structures 32, and/or between the first backrest 24 and the rear of the two second wall structures 32;

a transverse limiting structure 8 arranged between the front parts of the two first wall structures 22 and the front parts of the two second wall structures 32;

wherein the first upward limiting structure 6 and the second upward limiting structure 7 define the position of the second chair portion 3 in the vertical direction; the lateral limiting structure 8 is used for laterally limiting the position of the second seat part 3.

Specifically, as shown in fig. 2, the first seat portion 2 includes a first seating surface 21, two first wall structures 22 protruding from the outer periphery of the first seating surface 21 and disposed upward, and a first backrest 24 for supporting the back of the child. The first seating surface 21 is an upper surface of a seat plate of the first seat portion 2, and the first seating surface 21 may have a certain curvature to conform to a curve of a hip of a human body, thereby having a certain comfort. The first wall structure 22 is located at left and right sides of the first seating surface 21 and extends substantially in a vertical direction for wrapping the buttocks of a human body, and may also serve as an armrest. The first backrest 24 is located at a rear side of the first seating surface 21 and extends substantially in a longitudinal direction for supporting a back of the child.

As shown in fig. 3, the second seat portion 3 includes a second seating surface 31, two second wall structures 32 protruding upward from the outer periphery of the second seating surface 31, and a second backrest 34 for supporting the back of the child. The second seating surface 31 is an upper surface of a seat plate of the second seat portion 3, and the second seating surface 31 may have a certain curvature, which conforms to a curve of a hip of a human body, and has a certain comfort. The second wall structure 32 is located at the left and right sides of the second seating surface 31 and extends substantially in the vertical direction for wrapping the buttocks of the human body, and may also be used as an armrest. The second backrest 34 is located at a rear side of the second seating surface 31 and extends substantially in a longitudinal direction for supporting a back of the child.

As shown in fig. 4, the limiting structure includes: a first upward limiting structure 6, a second upward limiting structure 7 and a lateral limiting structure 8.

Wherein the first upward limiting structure 6 is located between the front parts of the two first wall structures 22 and the front parts of the two second wall structures 32, so as to realize the vertical positioning of the front parts of the first chair part 2 and the second chair part 3.

The second upward limiting structure 7 is located between the first backrest 24 and the rear portions of the two second wall structures 32, and vertically positions the rear portions of the first and second chair portions 2, 3.

The transverse limiting structure 8 is located between the front portions of the two first wall structures 22 and the front portions of the two second wall structures 32, so as to realize the positioning of the front portions of the first chair portion 2 and the second chair portion 3 in the transverse direction.

Alternatively, the second upward limiting structure 7 may be provided between the rear portions of the two first wall structures 22 and the rear portions of the two second wall structures 32, and vertical positioning of the rear portions of the first and second chair portions 2, 3 is also enabled. Alternatively, the second upward limiting structure 7 is arranged both between the rear of the two first wall structures 22 and the rear of the two second wall structures 32 and between the first backrest 24 and the rear of the two second wall structures 32.

In this embodiment, the front and rear vertical positions of the first chair portion 2 and the second chair portion 3 and the front transverse position are simultaneously fixed, so that the first chair portion 2 and the second chair portion 3 are more stable after being connected, and the problem of fracture of the limiting structure is not easy to occur.

Further, as shown in fig. 1, the chair further comprises a supporting structure 1, the supporting structure 1 can be supported on the ground, and the supporting structure 1 and the first chair portion 2 are detachably connected or fixedly connected or integrally formed.

Specifically, the supporting structure 1 includes a first supporting rod 12 and a second supporting rod 13, and the first supporting rod 12 and the second supporting rod 13 are connected by a locking joint 14. When the locking joint 14 is locked, the angle between the first support bar 12 and the second support bar 13 is fixed, and the first support bar 12 and the second support bar 13 can be unfolded to a proper angle for maintaining the stability of the child dining chair. When the child dining chair needs to be folded, an unlocking button (not shown) is pressed, and the unlocking button drives the locking joint 14 to unlock, so that the first support rod 12 and the second support rod 13 can rotate relatively before folding, thereby realizing folding.

Alternatively, the support structure 1 may be other rod structures, which can be lifted and lowered in the height direction for adjusting the height of the dining chair.

Alternatively, the first chair part 2 may not be connected to the support structure 1, and the bottom of the first chair part 2 may be in direct contact with a support plane.

Further, as shown in fig. 5, the first upward limiting structure 6 includes a first upper platform 61 disposed on the first wall structure 22, and a first lower platform 62 disposed on the second wall structure 32, the first upper platform 61 providing upward supporting force for the first lower platform 62.

Specifically, a first upper platform 61 is provided on an upper surface of a forward portion of the first wall structure 22 and a first lower platform 62 is provided on a lower surface of a forward portion of the second wall structure 32. When the second seat portion 3 is mounted on the first seat portion 2, the first lower platform 62 contacts the first upper platform 61, and the first upper platform 61 provides the first lower platform 62 with an upward supporting force for supporting the second seat portion 3 thereon.

In this embodiment, first upper mounting plate 61 is the bellied cambered surface that makes progress, and first platform 62 is the cambered surface of upwards caving in, and first upper mounting plate 61 has just laminated with first platform 62's radian, has increased area of contact between the two, provides more stable holding power.

Further, as shown in fig. 6, the second upward limiting structure 7 includes a second upper platform 71 provided on the first backrest 24, and a second lower platform 72 provided on the second wall structure 32, the second upper platform 71 providing an upward supporting force for the second lower platform 72.

Specifically, the second upper platform 71 is disposed on the upper surface of the first backrest 24, the second lower platform 72 is disposed on the lower surface of the rear portion of the second wall structure 32, when the second chair portion 3 is erected on the first chair portion 2, the second lower platform 72 is in contact with the second upper platform 71, and the second upper platform 71 provides an upward supporting force for the second lower platform 72 for supporting the second chair portion 3 thereabove.

In this embodiment, the second upper platform 71 is an inclined plane, the second lower platform 72 is also a corresponding inclined plane, and the second upper platform 71 and the second lower platform 72 are just attached to each other, so that the contact area between the two is increased, and more stable supporting force is provided.

Alternatively, the second upper platform 71 may also be provided on the upper surface of the first wall structure 22, also being able to provide an upward supporting force to the rear of the second chair portion 3.

Optionally, a limiting structure may also be provided between the middle portions of the first and second wall structures 22, 32 to provide a middle upward supporting force for the second chair portion 3.

Further, as shown in fig. 6, the lateral limiting structure 8 includes two wall sandwiching structures 82 disposed at two sides of the front portions of the two second wall structures 32, and the two wall sandwiching structures 82 respectively abut against the corresponding first wall structures 22 to limit the lateral displacement of the second chair portion 3.

Specifically, the double-walled structure 82 is located outside the outer surface of the first wall structure 22 for restricting the lateral displacement of the second seat portion 3. The left and right double-walled structures 82 restrict lateral displacement of the second seat portion 3 in both left and right directions, and prevent the second seat portion 3 from shifting left and right with respect to the first seat portion 2.

Preferably, as shown in fig. 6, a locking groove 81 is formed on an outer surface of the first wall structure 22, and after the wall-clamping structure 82 is locked into the locking groove 81, the outer surface of the wall-clamping structure 82 is flush with the outer surface of the first wall structure 22, so as to prevent children from being scratched.

Further, as shown in fig. 7, the limiting structure further includes a locking structure 4 disposed between the inside of the two first wall structures 22 and the outside of the two second wall structures 32, the locking structure 4 includes a sliding member 45 and a first locking hook member 42, and the sliding member 45 drives the first locking hook member 42 to lock or unlock the first wall structures 22 and the second wall structures 32.

Specifically, the sliding member 45 can be slidably moved, and the first latch hook member 42 is brought to lock or unlock the first wall structure 22 and the second wall structure 32.

Preferably, the sliding member 45 is a steel wire, and in the locked state, the first locking member 42 passes through the second wall structure 32 and the first wall structure 22, so as to lock the second chair portion 3 and the first chair portion 2;

in the unlocked state, the slider 45 drives the first lock member 42 to separate from the first wall structure 22, and the first lock hook 42 retracts into the second wall structure 32, so as to unlock the second chair portion 3 and the first chair portion 2.

Further, as shown in fig. 3, the second seat portion 3 further includes a second seating surface 31, the second seating surface 31 being smaller than the first seating surface 21, the second seat portion 3 being mounted on the first seat portion 2 such that the second seating surface 31 is disposed higher than the first seating surface 21.

Further, as shown in fig. 7, a slider 45 is mounted to the bottom surface 35 opposite the second seating surface 31, the slider 45 being connected to the first latch hook member 42 at the second wall structure 32.

Preferably, the lock structure 4 further comprises an operating member 41, the operating member 41 can be a push key and is connected to the first hook member 42 through a sliding member 45, the lock structure 4 is mounted on the bottom surface 35, the operating member 41 is disposed on the front side of the bottom surface 35, and the two first hook members 42 are disposed on the left and right sides of the bottom surface 35 and partially protrude therefrom.

As shown in fig. 8, the first wall structure 22 of the first chair portion 2 is respectively provided with a first locking slot 25, and the first locking hook 42 extends from the left and right side surfaces of the bottom surface 35 and is inserted into the first locking slot 25, so as to connect the second chair portion 3 with the first chair portion 2.

When the second chair part 3 needs to be disassembled, the operating piece 41 is pressed, the operating piece 41 drives the sliding piece 45, the steel wire pulls the first locking hook piece 42 inwards, so that the first locking hook piece 42 is retracted into the bottom surface 35 and is separated from the first locking groove 25, and the first chair part 2 is separated from the second chair part 3. The user can lift the second chair portion 3 upwards and thereby detach the second chair portion 3 from the first chair portion 2.

Alternatively, the locking structure 4 may be another locking and unlocking structure, and the installation position of the locking structure 4 is not limited to the bottom surface 35, and may also be installed on the outer side surface of the backrest of the second chair part 3, so as to realize locking with the inner side surface of the backrest of the first chair part 2.

In this embodiment, the stable connection between the second chair part 3 and the first chair part 2 is realized by the vertical positioning of the front part and the rear part, the transverse positioning of the front part and the locking structure of the left wall surface and the right wall surface, and the limiting structure is not easy to be damaged.

Example two:

a multifunctional dining chair comprising a support structure 1, a first chair part 2 and a second chair part 3;

the first seat portion 2 comprises a first seating surface 21, two first wall structures 22 projecting upwardly from the outer periphery of the first seating surface 21, and a first backrest 24 for supporting the back of the child;

a second seat portion 3 comprising two second wall structures 32 and a second backrest 34 for supporting the back of the child;

the second seat portion 3 is detachably mounted on the first seat portion 2,

when the second chair part 3 is arranged on the first chair part 2, a limit structure is arranged between the first chair part and the second chair part, so that the second chair part 3 is positioned at the upper part of the first chair part 2;

limit structure includes:

a first upward limiting structure 6 arranged between the front portions of the two first wall structures 22 and the front portions of the two second wall structures 32;

a second upward limiting structure 7 arranged between the rear of the two first wall structures 22 and the rear of the two second wall structures 32, and/or between the first backrest 24 and the rear of the two second wall structures 32;

a lateral restraining structure 8 disposed between the front portions of the first wall structures 22 and the front portions of the second wall structures 32;

wherein the first upward limiting structure 6 and the second upward limiting structure 7 define the position of the second chair part 3 in the vertical direction; the transverse limiting structure 8 is used for limiting the position of the second chair part 3 in the transverse direction;

in the second embodiment, the supporting structure 1 can be supported on the ground, and the supporting structure 1 and the first chair portion 2 can be detachably connected or fixedly connected or integrally formed.

Besides being connected through the limiting structure between the second chair portion 3 and the first chair portion 2, the second chair portion 3 can also be connected with the supporting structure 1, and the supporting structure 1 provides more stable support for the second chair portion 3.

Further, as shown in fig. 9, a locking structure 4 disposed between the second seat portion 3 and the support structure 1 is further included, and the locking structure 4 includes a positioning member 43 and a second latch hook member 44.

Specifically, the positioning member 43 includes a positioning hole 431, a positioning pin 432, a positioning block 433, and a positioning plate 434. Wherein, locating hole 431 sets up on locating plate 434, and locating plate 434 and bearing structure 1 fixed connection, locating pin 432 can insert in locating hole 431, and locating piece 433 is fixed on locating plate 434, can realize the location with bearing structure 1. A second latch hook member 44 is mounted on the outer side of the second backrest 34. The positioning hole 431 includes a large hole and a small hole, and the large hole is located above the small hole.

When the locking mechanism is installed, the positioning pin 432 is inserted into the large hole in the positioning hole 431, and then the positioning pin 432 is inserted into the small hole from the large hole, so that the locking mechanism 4 and the supporting structure 1 are positioned, and the positioning member 43 can limit the rotation of the second chair part 3, but does not limit the displacement of the second chair part 3 along the axis of the positioning pin 432. Subsequently, the second latch hook member 44 is engaged with the upper edge of the positioning plate 434, so as to lock the second chair portion 3 with the supporting structure 1, and the positioning block 433 abuts against the lower edge of the supporting structure 1, so as to limit the upward displacement of the second chair portion 3.

Preferably, when the second chair portion 3 and the first chair portion 2 are assembled, the second backrest 34 is located above the first backrest 24, and the locking structure 4 is disposed between the second backrest 34 and the support structure 1.

In this embodiment, the second chair portion 3 is stably supported by locking the second chair portion 3 with the support mechanism 1, so that the structure of the second chair portion 3 combined with the first chair portion 2 is more stable.

What has been described above is merely the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other modifications can be made, and the protection scope of the present invention should be considered.

Claims (10)

1. A multifunctional dining chair comprises a first chair part (2) and a second chair part (3);

the first chair part (2) comprises a first seating surface (21), two first wall structures (22) protruding upwards from the periphery of the first seating surface (21) and a first backrest (24) for supporting the back of a child;

-said second seat portion (3) comprising two second wall structures (32) and a second backrest (34) for supporting the back of the child;

the second chair part (3) can be detachably arranged on the first chair part (2),

the chair is characterized in that when the second chair part (3) is arranged on the first chair part (2), a limiting structure is arranged between the first chair part and the second chair part, so that the second chair part (3) is positioned at the upper part of the first chair part (2);

the limit structure comprises:

a first upward limiting structure (6) arranged between the two first wall structures (22) and the two second wall structures (32);

-a second upward limiting structure (7) arranged between the two first wall structures (22) and the two second wall structures (32) at the rear and/or between the first backrest (24) and the two second wall structures (32) at the rear;

-a lateral restraining structure (8) disposed between the front portions of the two first wall structures (22) and the front portions of the two second wall structures (32);

wherein the first upward limiting structure (6) and the second upward limiting structure (7) define the position of the second chair part (3) in the vertical direction; the transverse limiting structure (8) is used for limiting the position of the second chair part (3) in the transverse direction.

2. A multi-function dining chair according to claim 1, wherein said first upward-facing restraining structure (6) comprises a first upper platform (61) disposed on said first wall structure (22) and a first lower platform (62) disposed on said second wall structure (32), said first upper platform (61) providing upward supporting force to said first lower platform (62).

3. A multi-function dining chair according to claim 1, wherein said second upward-facing restraining structure (7) comprises a second upper platform (71) disposed on said first wall structure (22) or said first back rest (24), and a second lower platform (72) disposed on said second wall structure (32), said second upper platform (71) providing upward support to said second lower platform (72).

4. A multi-function dining chair according to claim 1, wherein said lateral restraining structure (8) comprises a pair of retaining walls disposed at two sides of the front portion of said second wall structure (32), said retaining walls abutting against the corresponding first wall structure (22) to restrain the lateral displacement of said second portion (3).

5. A multi-purpose dining chair according to claim 1, wherein said position-limiting structure further comprises a locking structure (4) disposed between the inside of said first wall structure (22) and the outside of said second wall structure (32), said locking structure (4) comprising a sliding member (45) and a first latch hook member (42), said sliding member (45) driving said first latch hook member (42) to lock or unlock said first wall structure (22) and said second wall structure (32).

6. A multi-functional dining chair according to claim 5, wherein said second seat portion (3) further comprises a second seating surface (31), said second seating surface (31) being smaller than said first seating surface (21), said second seat portion (3) being mounted on said first seat portion (2) such that said second seating surface (31) is disposed higher than said first seating surface (21).

7. A multi-function dining chair according to claim 6, wherein said slide (45) is mounted on a bottom surface opposite said second seating surface (31), said slide (45) being connected to said first latch hook member (42) at said second wall structure (32).

8. Multifunctional dining chair according to claim 1, characterized in that it further comprises a support structure (1), said support structure (1) being able to be supported on the ground, and said support structure (1) being removably connected to the first chair part (2) or being fixedly connected to it or being formed integrally with it.

9. Multifunctional dining chair according to claim 8, further comprising a locking structure (4) arranged between said second chair part (3) and said supporting structure (1), said locking structure (4) comprising a positioning element (43) and a second latch hook element (44).

10. A multi-functional dining chair according to claim 9, wherein said second back (34) is positioned above said first back (24) when said second chair part (3) is assembled with said first chair part (2), and said locking structure (4) is disposed between said second back (34) and said supporting structure (1).

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