CN215874105U

CN215874105U - Portable dining chair for children

Info

Publication number: CN215874105U
Application number: CN202121134863.XU
Authority: CN
Inventors: 林�智
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2022-02-22
Anticipated expiration: 2031-05-25

Abstract

The utility model provides a portable child dining chair convenient to fold, unfold and use, which comprises: the dining table comprises a sitting part, a backrest part, two side wall blocking parts and a front table part, wherein the sitting part and the backrest part can be relatively turned to a storage state and a use state; further comprising a first locking structure; the chair leg assembly is movably arranged below the seat part; a second locking structure is also included; the front dining table part can be movably arranged in the front-back direction on the transverse surrounding blocking part, and a third locking structure is arranged between the front dining table part and the transverse surrounding blocking part, or the front dining table part is fixedly arranged on the transverse surrounding blocking part.

Description

Portable dining chair for children

Technical Field

The utility model relates to a portable child dining chair.

Background

The existing child dining chair mostly has the problems of large occupied space, inconvenience in folding and unfolding, complex structure and the like.

For example, chinese patent No. CN208941485U discloses a foldable child dining chair, but the above structure still has a large longitudinal length after being folded, resulting in a limited reduction in the folded volume.

Disclosure of Invention

The utility model aims to provide a portable child dining chair which is convenient to fold, unfold and use.

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

a portable child dining chair comprising:

a seat part for seating the buttocks of the child thereon;

the backrest part is positioned at the rear side of the seat part for a child to lean against and is connected with the seat part in a turnover way;

the seat part and the backrest part can be relatively turned to be in a storage state approximately in a stacked mode and a use state approximately for normal seating and leaning of children;

two side wall blocking parts which are respectively arranged at the left side and the right side of the seat part and the backrest part so as to respectively block the left side and the right side of the child,

the front dining table is arranged on the side wall blocking part and used for placing food;

the side wall blocking part comprises a transverse blocking part and a longitudinal connecting part which are mutually connected, one end of the transverse blocking part is connected with one end of the longitudinal connecting part in a pivoting manner, the other end of the transverse blocking part is connected with the backrest part in a pivoting manner, and the other end of the longitudinal connecting part is connected with the seat part in a pivoting manner so as to facilitate the relative turning movement of the seat part and the backrest part;

the seat part and the backrest part are locked or unlocked relatively in a storage state and/or a use state;

also comprises a chair leg component which is movably arranged below the seat part,

in the storage state, the chair leg components can move relative to the seat part to be approximately folded together,

in the using state, the chair leg component can move relative to the seat part to approximately normally support the seat part;

the chair also comprises a second locking structure which enables the seat part and the chair leg assembly to be relatively locked or unlocked in a storage state and/or a use state;

the front dining table part can be movably arranged on the transverse blocking part back and forth so as to adjust the position of the front dining table part, a third locking structure which enables the front dining table part and the transverse blocking part to be locked or unlocked relatively is arranged between the front dining table part and the transverse blocking part, or the front dining table part is fixedly arranged on the transverse blocking part.

Preferably, the leg assembly comprises a first leg assembly and a second leg assembly, the first leg assembly and the second leg assembly are respectively arranged under the seat part in a front-back or left-right mode, the first leg assembly and/or the second leg assembly comprise a leg part and a connecting part, the connecting part is respectively connected with the leg part and the seat part in a pivoting mode, and the leg part is connected with the seat part in a sliding mode.

Preferably, the bottom surface of the seat part is provided with an accommodating groove, and in an accommodating state, the first leg assembly and/or the second leg assembly are/is accommodated in the accommodating groove.

Preferably, a fixing structure is arranged on the bottom surface of the seat part, and the first leg assembly and/or the second leg assembly are/is fixed relative to the seat part through the fixing structure after being changed to a storage state.

Preferably, the fixing structure comprises a clamping portion arranged on the seat portion, and the first leg assembly and/or the second leg assembly is/are clamped at the clamping portion after being changed to the storage state.

Preferably, the bottom of the seat part is provided with a slide way, the leg part is provided with a slide block which can pivot, and the slide block is in sliding fit with the slide way.

Preferably, the second locking structure includes a locking hole provided in one of the seat portion and the slider and an elastic locking portion provided in the other, the elastic locking portion is locked in the locking hole in the storage state or the use state, and the elastic locking portion is retracted from the locking hole when the slider moves due to the external force acting on the leg member.

Preferably, the bottom of the seat part is provided with a cover plate, the slide way is arranged between the seat part and the cover plate, the elastic clamping part comprises an elastic sheet integrally formed on the cover plate and a protrusion integrally formed on the elastic sheet, the clamping hole is formed in the sliding block, and the protrusion extends into the clamping hole.

Preferably, an adjusting structure for adjusting the opening angle of the leg assembly is further arranged between the seat part and the leg assembly.

Preferably, the adjustment structure doubles as at least a part of the second locking structure.

Preferably, the adjusting structure is a one-way adjusting structure.

Preferably, still be equipped with between seat and the chair leg subassembly and be used for adjusting the regulation structure of chair leg subassembly angle of opening, it includes that mobile setting is in to adjust the structure the plug connector of seat bottom, the slider is equipped with the spliced eye, the plug connector can insert or withdraw from during the activity the spliced eye, seat with be equipped with between the plug connector and make the spliced eye keep to the elastic component of spliced eye direction movement trend.

Preferably, the inserting end of the inserting piece is provided with a one-way inserting inclined surface so that the adjusting structure can form one-way adjustment.

Preferably, the leg portion comprises two vertical supporting rods and a transverse supporting rod connected between the two vertical supporting rods, and the vertical supporting rods and the transverse supporting rod are integrally or separately connected.

Preferably, the transverse strut is an upwardly arched curved strut, and two support points are formed at two ends of the transverse strut.

Preferably, the two supporting points are provided with anti-skid silica gel pieces.

Preferably, the two supporting points are embedded with anti-skid silica gel pieces.

Preferably, the first locking structure comprises a press type locking device arranged between the transverse blocking part and the backrest part.

Preferably, the pressing type locking device comprises a first abutting part integrally or separately arranged on the backrest part, the transverse surrounding blocking part is provided with a second abutting part, an accommodating space is formed between the first abutting part and the second abutting part, the containing space is internally provided with an axially movable locking disc which is in non-rotatable fit with the butt joint part, the locking disc is provided with a clamping groove, the second butting part is provided with a second clamping part which is clamped with the clamping groove on the locking disc, the accommodating space is provided with an elastic component which has the tendency that the locking disc is pushed to the second butting part to keep the clamping groove and the second clamping part clamped, and a pressing part is arranged on the second butt joint part, and the pressing part can be pressed to enable the locking disc to move towards the first butt joint part in the direction of overcoming the action of the elastic component, so that the clamping groove is separated from the second clamping part.

Preferably, the elastic component is arranged between the first abutting part and the position locking disc.

Preferably, the first butt joint part is provided with a first clamping part clamped with the clamping groove in the position locking disc, and the first clamping part is clamped with the clamping groove when the position locking disc moves axially.

Preferably, the first abutting part and the second abutting part are sleeved.

Preferably, the first butt joint part is provided with an installation shaft, the locking disc is provided with a sleeve and is arranged in the shaft hole in the installation shaft, and the installation shaft and the shaft hole are of non-rotary structures matched with each other.

Preferably, the second clamping groove and the second clamping portion are configured to include a receiving position clamping groove and a using position clamping groove, the receiving position clamping groove and the second clamping portion are correspondingly clamped in the receiving state, the receiving position clamping groove and the second clamping portion are disengaged in the conversion from the receiving state to the using state, the transverse blocking portion pivots relative to the backrest portion, at least one clamping portion is kept to abut against the end face of the locking position disk to be relatively movable, so that the clamping portion and the second clamping groove can be kept disengaged from being clamped in the clamping groove under the action of no external force, and after the conversion to the using state, the clamping portion and the using position clamping groove correspond to each other and form clamping under the action of an elastic component; or the clamping groove and the second clamping part are configured to comprise a receiving position clamping groove and a using position clamping groove, the receiving position clamping groove and the second clamping part are correspondingly clamped in the receiving state, when the receiving state is converted to the using state, the transverse surrounding part pivots relative to the backrest part, the second butting part is provided with at least one retaining part which abuts against the end face of the locking plate, so that the retaining part and the clamping groove can be kept to be separated from being clamped with the clamping groove under the action of no external force, and after the conversion to the using state, the clamping part corresponds to the using position clamping groove and forms clamping under the action of an elastic component; or the clamping groove and the second clamping part are configured to comprise a receiving position clamping groove and a using position clamping groove, the receiving position clamping groove and the second clamping part are not corresponding or clamped in the receiving state, when the receiving state is converted to the using state, the transverse surrounding part pivots relative to the backrest part, at least one clamping part is kept to abut against the end face of the locking position disc, so that the clamping part and the clamping groove can be kept to be separated from being clamped with the clamping groove under the action of no external force, and after the receiving state is converted to the using state, the clamping part and the using position clamping groove correspond and form clamping under the action of an elastic component; alternatively, the first and second electrodes may be,

the clamping groove and the clamping part II are configured, the clamping groove comprises a storage position clamping groove and a use position clamping groove, the storage position clamping groove and the clamping part II do not correspond or are not clamped in the storage state, when the storage state is converted to the use state, the transverse enclosing part pivots relative to the backrest part, the butt joint part II is provided with at least one retaining part which is abutted to the end face of the locking plate, so that the retaining part and the clamping groove can be kept to be separated from being clamped with the clamping groove under the action of no external force, and after the conversion to the use state, the clamping part corresponds to the use position clamping groove and forms clamping under the action of an elastic component.

Preferably, the card slots are distributed on the position locking disc in an uneven mode.

Preferably, an anti-falling structure is arranged between the pressing part and the second butting part to prevent the pressing part from falling off the second butting part.

Preferably, the two surfaces of the butt joint part are provided with grooves, the pressing part extends into the grooves, the bottom of each groove is provided with a jack, the bottom of the pressing part is provided with an insertion part penetrating through the jack, and the anti-falling structure comprises a barb arranged on the insertion part.

Preferably, the third locking structure comprises a lock catch and a lock hole which are arranged between the transverse surrounding part and the front dining table part, and the lock catch is buckled into or withdrawn from the lock hole to lock or unlock the transverse surrounding part and the front dining table part.

Preferably, transversely enclose the fender portion outside and be equipped with one row of lockhole, preceding dining-table portion orientation transversely enclose one side of fender portion and be equipped with the locked groove, pivotable is equipped with in the locked groove and sticks up the member, it forms to stick up to be equipped with the arch on the member the hasp, stick up the member with it applys to be equipped with elastomeric element between the preceding dining-table portion and make the effort of hasp to the activity of lockhole place one side, preceding dining-table portion outside is equipped with and is used for prying stick up the operating means of member.

Preferably, said operating means comprises a push button or knob provided on said front table portion.

Advantageous effects

After the technical scheme is adopted, the seat part, the backrest part and the side wall blocking part are arranged into the pivoting structures, and the chair leg assembly is movably arranged below the seat part, so that a user can fold, store and unfold for use at any time in the use process, and the dining chair can be fixed in the storage or use state by arranging the first locking structure, the second locking structure and the third locking structure, and is good in usability and safety.

Drawings

FIG. 1 is a schematic view of the present invention in use;

FIG. 2 is a schematic view of the present invention in a storage position;

FIG. 3 is a bottom view of the present invention in the stowed condition;

FIG. 4 is a partial schematic view of the present invention in a storage state;

FIG. 5 is a partial schematic view of the present invention in a storage state;

FIG. 6 is a partial schematic view of the elastic clip of the present invention;

FIG. 7 is a schematic view of a second locking arrangement of the present invention;

FIG. 8 is a schematic view of a second locking arrangement of the present invention;

FIG. 9 is a schematic view of a second locking arrangement of the present invention;

fig. 10 is a schematic view of a second locking arrangement of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, so that how to implement the embodiments of the present invention by using technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.

Certain terms are used herein to refer to particular components, and it should be understood by those skilled in the art that the present specification and claims do not distinguish between components by virtue of differences in name, but rather by virtue of differences in function of components. It should be noted that, when an element is described as being "provided with" or "disposed on" another element, it may mean that the element is directly provided or disposed on the other element or intervening elements may be present, and may be a unitary structure or a split structure, unless otherwise specified. When an element is described as being "connected" to another element, it can be directly connected or connected through intervening elements, or it can be integrally connected or separately connected. When an element is referred to as being "on" another element, it does not mean that the element is necessarily on top of or above the other element, or in other locations. The terms "upper", "lower", "left", "right", "high", "low" and the like are used herein with reference to the normal state of the product in which it is placed, and are used for convenience of description only. The term "plurality" as used herein refers to two or more numbers. The terms "vertical," "horizontal," and the like as used herein refer to a substantially vertical or substantially horizontal condition within reasonable tolerances and are not necessarily exact.

Referring to fig. 1 and 2, the portable child dining chair of the present invention comprises:

a seat part 1 for seating the buttocks of the child thereon, which is approximately a square plastic plate-shaped structure;

a backrest part 2 which is arranged at the rear side of the seat part for the children to lean against, is connected with the seat part in a turnover way and has a roughly square plastic plate-shaped structure;

the rear end of the seat part and the bottom end of the backrest part are connected in a turnover way through a pivot shaft, the seat part and the backrest part can be relatively turned to a storage state of approximately stacking (for example, stacking in an up-down distribution manner or stacking in a crossed manner) and a use state of approximately normally seating and leaning for children, and the optimal use state is that the angle between the seat part and the backrest part is 90-120 degrees;

the two side wall blocking parts are respectively arranged at the left side and the right side of the seat part and the backrest part so as to respectively block the left side and the right side of the child;

the front dining table part 4 is arranged on the side wall blocking part and is used for placing food, the dining table part is a plastic dining table part with a plane upper surface and raised peripheral edges to form a blocking, and the upper surface can be provided with a groove for placing a cup and the like;

the side wall blocking part comprises a transverse blocking part 31 and a longitudinal connecting part 32 which are mutually connected, one end of the transverse blocking part is connected with one end of the longitudinal connecting part through a pivoting shaft in a pivoting manner, the other end of the transverse blocking part is connected with the backrest part in a pivoting manner, and the other end of the longitudinal connecting part is connected with the seat part through a pivoting shaft in a pivoting manner so as to facilitate the relative turning movement of the seat part and the backrest part;

The chair leg assembly comprises a first chair leg assembly and a second chair leg assembly, the first chair leg assembly and the second chair leg assembly are arranged below the seat portion in a front-back or left-right mode respectively, the first chair leg assembly and/or the second chair leg assembly comprise a leg supporting part 51 and a connecting part 52, the connecting part is respectively connected with the leg supporting part and the seat portion in a pivoting mode through a pivoting shaft, and the leg supporting part is connected with the seat portion in a sliding mode.

The bottom surface of the seat part is recessed inwards to form an accommodating groove 11, and in an accommodating state, the first chair leg assembly and/or the second chair leg assembly are/is accommodated in the accommodating groove.

The bottom surface of the seat part is provided with a fixing structure, and the first chair leg component and/or the second chair leg component are/is fixed relative to the seat part through the fixing structure after being changed to a storage state.

Referring to fig. 3 to 5, the fixing structure includes a clamping portion 12 provided on the seat portion, and the first leg assembly and/or the second leg assembly is clamped at the clamping portion after being changed to the storage state.

The seat part bottom is equipped with the slide, pivotable on the landing leg part is equipped with slider 53, the slider with slide sliding fit.

The second locking structure comprises a clamping hole 54 formed in the sliding block and an elastic clamping part 13 formed in the seat part, the elastic clamping part is clamped in the clamping hole in a storage state or a use state, and the elastic clamping part is withdrawn from the clamping hole when the supporting leg part enables the sliding block to move under the action of external force.

Referring to fig. 3 to 6, the seat bottom has a cover plate 14, the slide is disposed between the seat and the cover plate, and the elastic clip portion includes a spring piece 131 integrally formed on the cover plate and a protrusion 132 integrally formed on the spring piece and extending into the clip hole.

An adjusting structure used for adjusting the opening angle of the chair leg assembly is further arranged between the seat part and the chair leg assembly.

In this embodiment, the adjusting structure doubles as at least a part of the second locking structure, and cooperates with the elastic locking portion to lock the seat portion and the leg assembly.

Preferably, the adjustment structure is a one-way adjustment structure such that the adjustment structure can only raise the leg assembly if only the leg assembly is operated.

Referring to fig. 3 to 6, the adjusting structure includes a plug 15 movably disposed at the bottom of the seat, the slider is provided with a plug hole 55, the plug can be inserted into or withdrawn from the plug hole when moving, and an elastic member 5 is disposed between the seat and the plug to keep the plug hole moving toward the plug hole.

In fig. 5, the plugging end of the plug is configured with a one-way plugging bevel 56 so that the adjustment structure forms a one-way adjustment.

The leg support part comprises two vertical support rods 511 and a transverse support rod 512 connected between the two vertical support rods, the vertical support rods and the transverse support rod are integrally or separately connected, the transverse support rod is a bent support rod with the middle part arched upwards, two support points are formed at two ends of the transverse support rod, and anti-skid silica gel pieces 513 are arranged at the two support points; preferably, the two supporting points are embedded with anti-slip silica gel pieces, and other suitable structures can be adopted in other embodiments.

The first locking structure comprises a pressing type locking device arranged between the transverse surrounding blocking part and the backrest part.

Referring to fig. 7 to 9, the push type locking means includes an abutment portion one 21 integrally or separately provided on the backrest portion, the transverse surrounding part is provided with a second abutting part 31, an accommodating space is formed between the first abutting part and the second abutting part, an axially movable locking plate 6 is arranged in the accommodating space and is in non-rotatable fit with the butt joint part, the locking position disc is provided with a clamping groove, the second butting part is provided with a second clamping part 311 which is clamped with the clamping groove on the locking position disc, the accommodating space is provided with an elastic component 5 which has the tendency that the locking disc is pushed to the second butting part to keep the clamping groove and the second clamping part clamped, and a pressing part 7 is arranged on the second butt joint part, and the pressing part can be pressed to enable the locking disc to move towards the first butt joint part against the action of the elastic component so as to enable the clamping groove to be disengaged from the second clamping part. Preferably, the elastic component is arranged between the first abutting part and the position locking disc.

Referring to fig. 7 and 8, the first abutting portion is provided with a first clamping portion 211 which is clamped with the clamping groove on the position locking disc, and when the position locking disc moves axially, the first clamping portion is clamped with the clamping groove.

In this embodiment, referring to fig. 7, the first abutting portion and the second abutting portion are sleeved to enable the transverse blocking portion and the backrest portion to pivot relatively.

The first butt joint part is provided with an installation shaft 212, the locking disc is provided with a shaft hole which is sleeved on the installation shaft, and the installation shaft and the shaft hole are of non-rotary structures which are matched with each other and are of D-shaped structures in the drawing.

In this embodiment, the second card slot and the second card portion are configured to include a receiving slot 611 and a using slot 612, in the receiving state, the receiving slot and the second card portion are correspondingly engaged, when the receiving state is switched to the using state, the receiving slot and the second card portion are disengaged, the transverse blocking portion pivots relative to the backrest portion, at least one of the card portions is kept to abut against the end face of the locking tray to move relative to the end face of the locking tray, so that the card portion and the second card portion can be kept disengaged from being engaged with the card slot without external force, and after the switching to the using state, the card portion and the using slot correspond to each other and form an engagement under the action of the elastic component.

In another embodiment, the second engaging portion and the second engaging portion are configured to include a receiving position engaging groove and a use position engaging groove, the receiving position engaging groove and the second engaging portion are engaged with each other in a receiving state, the transverse surrounding portion pivots relative to the backrest portion when the receiving state is switched to a use state, the second engaging portion is provided with at least one retaining portion abutting against an end surface of the locking plate so that the second engaging portion and the second engaging portion can be kept disengaged from the engaging groove without an external force, and the second engaging portion are engaged with each other by an elastic member after being switched to the use state.

In another embodiment, the second card slot and the second card portion are configured to include a storage slot and a use slot, in the storage state, the storage slot and the second card portion are not corresponding or engaged, when the storage state is converted to the use state, the transverse blocking portion pivots relative to the backrest portion, at least one card portion is held against an end surface of the lock plate so that the card portion and the second card slot can be kept disengaged from the card slot without external force, and after the conversion to the use state, the card portion and the second card portion correspond to each other and form an engagement under the action of an elastic component.

In another embodiment, the second engaging portion and the second engaging portion are configured to include a receiving position engaging groove and a use position engaging groove, in the receiving state, the receiving position engaging groove and the second engaging portion are not corresponding to each other or are not engaged with each other, when the receiving state is converted to the use state, the transverse blocking portion pivots relative to the backrest portion, the second engaging portion is provided with at least one retaining portion abutting against an end surface of the locking plate so that the second engaging portion and the second engaging portion can be kept disengaged from each other without an external force, and after the second engaging portion is converted to the use state, the second engaging portion corresponds to the use position engaging groove and is engaged with each other by an elastic member.

In fig. 7 to 9, the card slots are distributed unevenly on the capture plate.

An anti-falling structure is arranged between the pressing part and the second butting part to prevent the pressing part from being separated from the second butting part.

Preferably, a groove 312 is formed in the two surfaces of the abutting portion, the pressing portion extends into the groove, an insertion hole 313 is formed in the bottom of the groove, an insertion portion 71 penetrating through the insertion hole is formed in the bottom of the pressing portion, and the anti-falling structure comprises a barb 72 arranged on the insertion portion.

Referring to fig. 1, 2 and 10, the third locking structure includes a lock catch and a lock hole provided between the transverse blocking portion and the front dining table portion, and the lock catch is locked or unlocked by being buckled into or withdrawn from the lock hole.

Transversely enclose fender portion with through spout and slider sliding fit between the preceding dining-table portion, transversely enclose the fender portion outside and be equipped with spout 314, preceding dining-table portion is equipped with sliding connection and is in slider 46 in the spout, follow in the spout the extending direction of spout is equipped with one row of lockhole 315, the slider or preceding dining-table portion orientation transversely enclose and be equipped with locked groove 41 on one side of fender portion corresponds other positions of spout, but be equipped with in the locked groove through pivot axle pivot and stick up member 42, it forms to be equipped with protruding 43 on the member to stick up the hasp, stick up the member with be equipped with elastomeric element 6 between the preceding dining-table portion, apply the messenger through elastomeric element the effort of hasp to the activity of lockhole place one side, preceding dining-table portion outside is equipped with and is used for prying stick up the operating means 44 of member.

In other embodiments, the sliding groove may be further provided in the front dining table portion, and the sliding block may be provided on the lateral blocking portion.

Referring to fig. 1, 2 and 10, the operating member includes a push button disposed on the front dining table portion, and the front dining table portion is provided with a sliding groove for sliding the push button; in other embodiments, it may also be a button or knob.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A portable child dining chair comprising:

a seat part for seating the buttocks of the child thereon;

it is characterized in that the preparation method is characterized in that,

2. A portable children's dining chair according to claim 1, wherein said leg assemblies comprise first and second leg assemblies, said first and second leg assemblies being disposed respectively fore-aft or side-to-side below said seat portion, said first and/or second leg assemblies comprising a leg member and a connector, said connector being pivotally connected to said leg member and said seat portion respectively, said leg member being slidably connected to said seat portion.

3. A portable children's dining chair according to claim 2, wherein said seat portion has a receiving slot on a bottom surface thereof, and in the received state, said first leg assembly and/or said second leg assembly is received in said receiving slot.

4. A portable children's dining chair according to claim 2 or 3, wherein said seat portion has a securing formation on an underside thereof, by which said first and/or second leg assemblies are secured relative to said seat portion when moved to their stowed position.

5. A portable children's dining chair according to claim 4, wherein said securing structure comprises a catch portion provided on said seat portion, said first and/or second leg assemblies being arranged to catch on said catch portion when moved to the stowed position.

6. A portable children's dining chair according to claim 2 or 3, wherein a slide is provided on the bottom of said seat portion, and a slider is pivotally provided on said leg member, said slider being in sliding engagement with said slide.

7. The portable children's dining chair according to claim 6, wherein the second locking structure comprises a locking hole formed in one of the seat portion and the slider, and an elastic locking portion formed in the other of the seat portion and the slider, the elastic locking portion being locked in the locking hole in the storage/use state, and the elastic locking portion being withdrawn from the locking hole when the slider is moved by the leg member under an external force.

8. The portable children's dining chair according to claim 7, wherein the bottom of the sitting portion has a cover plate, the slide is disposed between the sitting portion and the cover plate, the elastic clip portion comprises a spring integrally formed on the cover plate and a protrusion integrally formed on the spring, the clip hole is disposed on the slider, and the protrusion extends into the clip hole.

9. A portable children's dining chair according to claim 1, 2 or 3, wherein an adjusting structure is further provided between said seat portion and said leg assembly for adjusting the opening angle of said leg assembly.

10. The portable children's dining chair according to claim 9, wherein said adjustment structure doubles as at least a portion of said second locking structure.

11. The portable children's dining chair according to claim 9, wherein said adjustment mechanism is a one-way adjustment mechanism.

12. The portable children dining chair according to claim 6, wherein an adjusting structure for adjusting the opening angle of the leg members is further disposed between the seat portion and the leg members, the adjusting structure comprises plug members movably disposed at the bottom of the seat portion, the sliding block is provided with a plug hole, the plug members can be inserted into or withdrawn from the plug hole during movement, and an elastic member for keeping the plug hole moving toward the plug hole is disposed between the seat portion and the plug members.

13. The portable children's dining chair according to claim 12, wherein said insertion end of said insertion member is configured with a one-way insertion slope such that said adjustment structure provides one-way adjustment.

14. A portable children's dining chair according to claim 2 or 3, wherein said leg portions comprise two vertical struts and a transverse strut connected between said two vertical struts, said vertical struts and said transverse strut being integrally or separately connected.

15. The portable children's dining chair according to claim 14, wherein said transverse strut is an upwardly arched curved strut, and two support points are formed at both ends of said transverse strut.

16. A portable children's dining chair according to claim 15, wherein anti-slip silicone is provided at said two support points.

17. A portable children's dining chair according to claim 16, wherein anti-slip silicone is embedded at said two support points.

18. A portable children's dining chair according to any one of claims 1 to 3, 5, 7 to 8, 10 to 13 and 15 to 17, wherein said first locking structure comprises a push-type locking means provided between said lateral containment portion and said backrest portion.

19. The portable children's dining chair according to claim 18, wherein said push-type locking means comprises a first abutment integrally or separately provided on said backrest, the transverse surrounding blocking part is provided with a second abutting part, an accommodating space is formed between the first abutting part and the second abutting part, the containing space is internally provided with an axially movable locking disc which is in non-rotatable fit with the butt joint part, the locking disc is provided with a clamping groove, the second butting part is provided with a second clamping part which is clamped with the clamping groove on the locking disc, the accommodating space is provided with an elastic component which has the tendency that the locking disc is pushed to the second butting part to keep the clamping groove and the second clamping part clamped, and a pressing part is arranged on the second butt joint part, and the pressing part can be pressed to enable the locking disc to move towards the first butt joint part in the direction of overcoming the action of the elastic component, so that the clamping groove is separated from the second clamping part.

20. The portable children's dining chair according to claim 19, wherein said resilient member is disposed between said first abutment portion and said capture plate.

21. The portable children's dining chair according to claim 19, wherein said first mating portion has a first engaging portion for engaging with a first engaging slot of said locking plate, said first engaging portion being engaged with said first engaging slot when said locking plate is moved axially.

22. The portable children's dining chair according to claim 19, wherein said first docking portion and said second docking portion are nested.

23. The portable children's dining chair according to claim 19, wherein an installation shaft is provided on the first docking portion, the locking plate is provided with a shaft hole that is sleeved on the installation shaft, and the installation shaft and the shaft hole are of a mutually matched non-rotating structure.

24. The portable dining chair for children as claimed in claim 19, wherein said second engaging portion and said second engaging portion are configured such that said second engaging portion comprises a receiving engaging portion and a using engaging portion, and said second engaging portion is disengaged from said second engaging portion when the receiving state is shifted to the using state, and said lateral blocking portion is pivoted relative to said backrest portion, and at least one of said engaging portions is kept against the end face of said locking plate to move relative to said second engaging portion, so that said second engaging portion can be disengaged from said second engaging portion without external force, and said second engaging portion is engaged with said second engaging portion by the elastic member when the receiving state is shifted to the using state; alternatively, the first and second electrodes may be,

the clamping groove and the clamping part II are configured, the clamping groove comprises a receiving position clamping groove and a using position clamping groove, the receiving position clamping groove and the clamping part are correspondingly clamped in a receiving state, the transverse surrounding blocking part pivots relative to the backrest part when the receiving state is converted to a using state, the abutting part II is provided with at least one retaining part which abuts against the end face of the locking position disc, so that the retaining part and the clamping groove can be kept to be separated from being clamped with the clamping groove under the action of no external force, and after the receiving state is converted to the using state, the clamping part corresponds to the using position clamping groove and forms clamping under the action of an elastic component; alternatively, the first and second electrodes may be,

the clamping groove and the clamping part II are configured, the clamping groove comprises a receiving position clamping groove and a using position clamping groove, the receiving position clamping groove and the clamping part II do not correspond to each other or are not clamped with each other in a receiving state, when the receiving state is converted to a using state, the transverse surrounding part pivots relative to the backrest part, at least one clamping part is kept to abut against the end face of the locking position disc, so that the clamping part and the clamping groove can be kept to be separated from being clamped with the clamping groove under the action of no external force, and after the receiving state is converted to the using state, the clamping part corresponds to the using position clamping groove and forms clamping under the action of an elastic component; alternatively, the first and second electrodes may be,

25. The portable children's dining chair according to claim 24, wherein said slots are unevenly distributed on said locking plate.

26. The portable children's dining chair according to claim 19, wherein a separation preventing structure is disposed between the pressing portion and the second docking portion to prevent the pressing portion from separating from the second docking portion.

27. The portable children's dining chair according to claim 26, wherein a groove is formed on both surfaces of the butt portion, the pressing portion extends into the groove, a socket is formed at the bottom of the groove, a plug portion penetrating through the socket is formed at the bottom of the pressing portion, and the anti-falling structure includes a barb formed on the plug portion.

28. The portable children's dining chair according to any one of claims 1 to 3, 5, 7 to 8, 10 to 13, 15 to 17, and 19 to 27, wherein said third locking structure comprises a locking catch and a locking hole provided between said lateral containment portion and said front dining table portion, and said locking catch locks or unlocks between said lateral containment portion and said front dining table portion by being caught in or withdrawn from said locking hole.

29. The portable dining chair for children as claimed in claim 28, wherein a row of locking holes are formed in the outer side of the transverse enclosing part, a locking groove is formed in one side of the front dining table part facing the transverse enclosing part, a tilting rod piece is pivotally arranged in the locking groove, a protrusion is arranged on the tilting rod piece to form the lock catch, an elastic component is arranged between the tilting rod piece and the front dining table part to apply an acting force which enables the lock catch to move towards one side of the locking hole, and an operating component for prying the tilting rod piece is arranged on the outer side of the front dining table part.

30. A portable children's dining chair according to claim 29, wherein said operating means comprise a push button or knob provided on said front dining table portion.