CN210643412U - Lifting type child dining chair - Google Patents

Abstract

The utility model discloses an over-and-under type children dining chair has solved the unable problem that goes up and down of seat support of the children dining chair at present stage. The technical scheme is that the lifting child dining chair comprises a chair seat and a bottom support, wherein the bottom support is provided with a lifting slide rod with a clamping groove; the chair seat is provided with a lifting clamping seat matched with the lifting slide bar, and a locking component is arranged in the lifting clamping seat; the lifting clamping seat is provided with a sliding channel and an installation cavity for installing the locking component, and a locking groove matched with the clamping groove is formed in the inner wall of the installation cavity of the lifting clamping seat; the locking assembly comprises a locking member and a locking spring; the locking piece is hinged in the mounting cavity and is provided with a locking hook part matched with the clamping groove; locking spring butt just makes locking hook portion have the trend of inserting in the joint inslot all the time in the one end of locking piece, the height of seat support can be adjusted to over-and-under type children dining chair, and adaptation in not dining table of co-altitude helps promoting children's dining experience degree.

Description

Lifting type child dining chair

Technical Field

The utility model relates to a child dining chair, in particular to an elevation type child dining chair.

Background

The children dining chair is a chair special for children to eat. Chinese utility model patent with grant publication number CN207168261U discloses a children dining chair, including dining chair frame and seat pocket subassembly, the dining chair frame includes bottom bracket and supporting seat, because the supporting seat snap-on is on the bottom bracket for the level of supporting seat is unchangeable, when the high emergence of dining table changes, sits the high unable regulation of children in above-mentioned children dining chair, thereby causes the lower problem of the experience degree of having a dinner.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an over-and-under type children dining chair, the height of seat support can be adjusted to over-and-under type children dining chair, and adaptation in not dining table of co-altitude helps promoting children's dining experience degree.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a lifting child dining chair comprises a chair seat and a bottom support, wherein the bottom support is provided with lifting slide bars on the left side and the right side of the chair seat respectively, and the lifting slide bars are provided with a plurality of clamping grooves at intervals along the length direction of the lifting slide bars; the left side and the right side of the chair seat are respectively provided with a lifting clamping seat matched with the lifting slide bar, and a locking component for positioning the chair seat on the lifting slide bar is arranged in the lifting clamping seat; the lifting clamping seat is provided with a sliding channel matched with the lifting sliding rod and an installation cavity for installing the locking assembly, and a locking groove matched with the clamping groove is formed in the inner wall of the installation cavity of the lifting clamping seat; the locking assembly comprises a locking member and a locking spring; the locking piece is hinged in the mounting cavity and is provided with a locking hook part matched with the clamping groove; the locking spring is abutted against one end of the locking piece and enables the locking hook part to always have the tendency of being inserted into the clamping groove.

Through adopting above-mentioned technical scheme, the seat support can slide on the lifting slide bar through the lift cassette to the realization is to the regulation of seat support level, and has realized fixing a position after the seat support slippage to a certain height through the cooperation in locking Assembly and joint groove. The locking assembly is simple in structure and convenient to operate, and unlocking of the locking assembly can be completed only by squeezing the locking piece. Above-mentioned over-and-under type children dining chair can be through the level of adjusting the seat support to make over-and-under type children dining chair can carry out the adaptation with the dining table of co-altitude not, thereby help promoting the dining experience sense of children when having a meal.

The utility model discloses further set up to, the lift cassette is equipped with the butt piece that slides of a plurality of and lift slide bar lateral wall butt along its length direction interval in the passageway that slides, and the lift cassette still is equipped with the strengthening rib that the connection is located lift slide bar homonymy butt piece that slides.

Through adopting above-mentioned technical scheme, carry out the butt through the butt piece that slides and lift slide bar, resistance when can reducing the cassette that slides and slide on lift slide bar for use less power can accomplish the slide of lift cassette on lift slide bar. Simultaneously, the setting of strengthening rib can promote the structural strength of the butt piece that slides, has reduced the in-process that the butt piece that slides on the lift slide bar that slides and has taken place the probability of damaging.

The utility model discloses further set up as, the locking piece includes the locking shroud, is fixed in the inboard locking plate of locking shroud and runs through the locking axle of locking shroud and locking plate simultaneously, locking hook portion locates the locking plate, the lift cassette still is equipped with the locking opening that supplies the locking shroud portion to stretch out the installation cavity.

Through adopting above-mentioned technical scheme, the locking piece includes locking shroud, locking plate and locking axle, and the user only need press the unlocking that the locking shroud can accomplish the locking subassembly, can convenience of customers to the unblock of locking subassembly.

The utility model is further arranged in that the lifting clamping seat comprises a fixed seat fixed on the seat, a fixed cover covering the fixed seat and reinforcing sleeves positioned at two sides of the fixed seat and matched with the lifting slide bar; one side of the fixed seat and one side of the fixed cover are matched with the positioning clamping hook through the positioning clamping groove, and the other side of the fixed seat and the other side of the fixed cover are connected and fixed through the screw.

Through adopting above-mentioned technical scheme, above-mentioned structure is convenient to be installed locking Assembly in the lift cassette, and the setting of strengthening sleeve can improve the cooperation intensity of lift cassette and lift slide bar, helps promoting the smooth degree of sliding of lift cassette on lift slide bar.

The utility model discloses further set up as, the left and right sides of seat support is equipped with articulated seat respectively, articulates respectively the dinner plate handrail on two articulated seats and installs the children dinner plate on two dinner plate handrails.

By adopting the technical scheme, the dinner plate handrail and the child dinner plate can slide on the hinged seat, the dinner plate handrail and the child dinner plate can be folded when the child dinner plate is not used, the occupied area of the lifting child dining chair is reduced, and the lifting child dining chair is convenient to store.

The utility model is further arranged that the hinging seat is provided with clamping grooves at intervals along the circumferential direction; the dinner plate handrail is provided with a clamping cavity and a clamping component arranged in the clamping cavity; the clamping cavity is provided with a clamping interface facing the hinge seat and a button opening positioned at the lower end of the clamping cavity; the clamping component comprises a clamping connecting rod, a clamping button and a clamping spring; one end of the clamping connecting rod is provided with a clamping plug which penetrates through the clamping interface and is matched with the clamping groove, the clamping plug is matched with the clamping interface to enable the clamping plug to slide along the axis of the clamping interface all the time, and one end of the clamping connecting rod, which is far away from the clamping plug, is provided with a hinged insertion column; one end, close to the clamping plug, of the clamping button is hinged to the clamping cavity, a hinge piece is arranged at the other end of the clamping button and provided with a strip-shaped groove into which the hinge inserting column is inserted, the hinge inserting column can slide in the strip-shaped groove, and the strip-shaped groove is arranged in a downward inclined mode along the direction far away from the clamping plug; the clamping spring makes the clamping plug always have the trend of inserting in the clamping groove.

By adopting the technical scheme, when a user presses the clamping button, the hinge piece on the clamping button moves upwards, the clamping connecting rod integrally moves backwards due to the inclined arrangement of the strip-shaped groove, the clamping spring is compressed, the clamping plug of the clamping connecting rod is separated from the clamping groove, and the angle of the dinner plate handrail on the hinge seat can be adjusted; when a user loosens the clamping button, the clamping spring resets, so that the clamping connecting rod slides forwards, the clamping plug of the clamping connecting rod is inserted into the clamping groove, and the dinner plate handrail is locked on the hinging seat. The clamping grooves in the hinging seat are matched with the clamping components of the dinner plate handrail, so that the dinner plate handrail is hinged and positioned on the hinging seat, and the dinner plate handrail and the dinner plate position of a child can be conveniently adjusted.

The utility model is further arranged in that the clamping connecting rod is Z-shaped and sequentially comprises a clamping section, a turning section and a driving section, the clamping section is positioned at the lower side of the driving section, the clamping plug is positioned at the end part of the clamping section, and the hinged inserting column is positioned at the end part of the driving section; the dinner plate handrail is also provided with an abutting column which abuts against one side of the turning section facing the clamping section.

By adopting the technical scheme, the structure of the clamping connecting rod is further limited, the size of the dinner plate handrail can be reduced, and the structure of the clamping component is more compact. The setting of butt post can assist sliding of joint plug, promotes precision and stability that the joint plug slided.

The utility model is further arranged in that the bottom bracket comprises a U-shaped front bracket and a U-shaped rear bracket, and the lifting slide bar is arranged on the front bracket; the bottoms of the front bracket and the rear bracket are provided with supporting leg assemblies; the stabilizer blade subassembly is including installing in the metal joist of fore-stock/after-poppet bottom and installing respectively in the stabilizer blade that slides at the metal joist both ends, the stabilizer blade that slides includes that the sleeve of metal joist tip is located to the cover and supports in the support foot seat on ground, and the bottom of support foot seat has the support plane.

Through adopting above-mentioned technical scheme, the cooperation intensity on over-and-under type children dining chair and ground can be promoted in the setting of above-mentioned bottom support and stabilizer blade subassembly, has reduced the subaerial non-skid property of over-and-under type children dining chair to the probability of toppling over takes place when children sit on above-mentioned over-and-under type children dining chair has been reduced.

The utility model discloses further set up to, the stabilizer blade subassembly still includes a hollow stabilizer blade overcoat, the sill bar middle part of metal keel, fore-stock/after-poppet, the stabilizer blade that slides all are located the stabilizer blade cavity, and the stabilizer blade overcoat still is equipped with the through-hole that the bottom that supplies the support foot seat stretches out.

Through adopting above-mentioned technical scheme, the stabilizer blade overcoat can promote over-and-under type children's dining chair's outward appearance aesthetic property. Simultaneously, when children walk aside at over-and-under type children's dining chair, the stabilizer blade overcoat can avoid children directly to collide with on metal keel, has reduced over-and-under type children's dining chair's potential safety hazard.

The utility model discloses further set up to, support the plane arrangement have with the protruding grain of support of ground butt.

Through adopting above-mentioned technical scheme, support protruding setting up of grain and can promote the non-skid property of over-and-under type children dining chair, reduce the probability that children took place to empty on over-and-under type children dining chair.

To sum up, the utility model discloses following beneficial effect has:

1. a lifting type child dining chair comprises a chair seat and a bottom support, wherein the chair seat realizes height adjustment through the cooperation of a sliding rod, a lifting clamping seat and a locking assembly, so that the lifting type child chair seat is adaptive to dining tables with different heights, and the dining experience of children is improved;

2. through the matching of the dinner plate armrest, the hinging seat and the clamping component, the dinner plate armrest can be rotationally positioned on the hinging seat, so that the lifting type child dining chair can be conveniently stored;

3. the bottom support all is equipped with leg assembly in the bottom of fore-stock and after-poppet, has promoted the non-skid property of over-and-under type children's dining chair, has reduced the probability that children took place to empty on the dining chair.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the front bracket and leg assembly mated in an exploded condition;

FIG. 3 is a schematic structural view of a supporting base;

FIG. 4 is an exploded view of the rotational positioning structure;

FIG. 5 is a schematic view of an exploded view of the rotational positioning structure from another perspective;

FIG. 6 is a schematic structural view of the front bracket;

FIG. 7 is a schematic view of the engagement of the lift cartridge and the locking assembly in an exploded condition;

FIG. 8 is a schematic structural view of the fixing cover;

FIG. 9 is a schematic view of the hinge seat and the armrest of the tray in an exploded configuration;

FIG. 10 is an exploded view of the armrest of the tray;

FIG. 11 is a schematic view of the snap link and snap button mated in an exploded condition.

In the figure: 1. a bottom bracket; 11. a front bracket; 111. lifting the sliding rod; 112. a clamping groove; 12. a rear bracket; 2. a chair seat; 21. a hinged seat; 211. a dining card slot; 212. a storage slot; 3. a child dinner plate; 4. a leg assembly; 41. a metal keel; 42. a slipping support leg; 421. a sleeve; 422. a supporting foot seat; 423. a support plane; 424. supporting the convex particles; 43. a support leg outer sleeve; 51. an unlocking seat; 511. a fixing plate; 512. a second locking slot; 513. a second stud; 514. a button slot; 515. a sliding clamping groove; 516. unlocking the through hole; 52. a locking seat; 521. a first locking groove; 522. a first stud; 53. locking the slide block; 531. a first through hole; 532. a spring slot; 54. a first spring; 55. a button end cap; 551. a sliding hook; 552. unlocking the convex column; 6. lifting the clamping seat; 6a, a fixed seat; 6a1, positioning card slot; 6b, fixing a cover; 6b1, positioning hook; 6c, a reinforcing sleeve; 61. a slipping channel; 62. a mounting cavity; 63. sliding the abutting sheet; 64. reinforcing ribs; 65. a locking groove; 71. a locking cover; 72. a locking piece; 721. a locking hook portion; 73. a locking shaft; 74. a locking spring; 8. a dinner plate armrest; 81. clamping the cavity; 811. a card interface; 812. a button opening; 813. a spring clamp groove; 814. a butting post; 82. connecting rods are clamped; 821. a clamping section; 822. a turning section; 823. a drive section; 824. clamping a plug; 825. the inserting column is hinged; 826. inserting a spring into the column; 83. clamping a button; 831. a hinged sheet; 832. a strip-shaped groove; 84. the spring is clamped.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, an elevating children dining chair mainly comprises a bottom frame 1, a seat 2 mounted on the bottom frame 1, and a children dining plate 3 mounted on the dining chair.

The bottom chassis 1 includes a front chassis 11 and a rear chassis 12, and both the front chassis 11 and the rear chassis 12 are U-shaped. In order to improve the anti-skid performance of the lifting type child dining chair on the ground, the lifting type child dining chair is provided with leg assemblies 4 at the bottom rods of the front support 11 and the bottom rod of the rear support 12.

Referring to fig. 1 and 2, the leg assembly 4 includes a metal keel 41 installed at the bottom of the front bracket 11/the rear bracket 12, and sliding legs 42 respectively installed at both ends of the metal keel 41. In this embodiment, the cross section of the metal keel 41 is a hollow square.

Referring to fig. 2 and 3, the sliding foot 42 includes a sleeve 421 sleeved on the end of the metal keel 41 and a supporting foot 422 supported on the ground. The bottom of the supporting foot seat 422 has a supporting plane 423, and supporting convex particles 424 abutting against the ground are uniformly distributed in the supporting plane 423.

Referring to figures 1 to 3 of the drawings, the leg assembly 4 further comprises a hollow leg casing 43 for enhancing the safety of the liftable child dining chair. The metal keel 41, the bottom bar middle part of the front bracket 11/the bottom bar middle part of the rear bracket 12 and the sliding leg 42 are all positioned in the cavity of the leg outer sleeve 43. The leg cover 43 also has a through hole through which the bottom of the supporting leg seat 422 protrudes, so that the supporting leg seat 422 can be supported on the ground.

Referring to fig. 1 and 4, the corresponding ends of the front bracket 11 and the rear bracket 12 are rotatably engaged by a rotational positioning structure. The rotary positioning structure comprises an unlocking seat 51 mounted at the end of the rear bracket 12, a locking seat 52 mounted at the end of the front bracket 11, a locking slider 53, a first spring 54 and a button end cover 55.

Referring to fig. 5, the locking slider 53 is shaped like a Chinese character mi, a first through hole 531 is formed in the middle of the locking slider 53, and a spring groove 532 is formed in a side surface of the locking slider 53 facing the locking seat 52.

Referring to fig. 4, the end surface of the lock base 52 facing the unlock base 51 is opened with a first lock groove 521 engaged with the lock slider 53, and the depth of the first lock groove 521 is greater than the thickness of the lock slider 53. The locking seat 52 has a first stud 522 inserted into the first through hole 531, and the first spring 54 is sleeved on the first stud 522 and abuts against the spring groove 532 of the locking slider 53.

Referring to fig. 4 and 5, the unlocking seat 51 has a fixing plate 511, and a second locking groove 512 is formed on a side surface of the fixing plate 511 facing the locking seat 52. Wherein the depth of the second locking groove 512 is less than the thickness of the locking slider 53. The unlocking seat 51 further includes a second stud 513 corresponding to the first stud 522, and the first stud 522 and the second stud 513 are fixed by abutting and screwing on end portions thereof.

The unlocking seat 51 is provided with a button groove 514 for slidably mounting the button end cover 55 on one side of the fixing plate 511 away from the locking seat 52, and a slidable clamping groove 515 is formed at the edge of the fixing plate 511, and an unlocking through hole 516 is further formed in the fixing plate 511.

The edge of the button end cover 55 is provided with a sliding hook 551 matched with the sliding slot 515. The sliding hook 551 and the sliding groove 515 are engaged with each other, so that the button cover 55 can slide toward the bottom of the button groove 514, and is not easy to fall off from the button groove 514. The button cover 55 is further provided with an unlocking protrusion 552 which can pass through the unlocking through hole 516 and abut against the locking slider 53 on the side surface facing the fixing plate 511, and the unlocking protrusion 552 is inserted into the first locking groove 521 without interfering with the side wall of the first locking groove 521.

The working principle of the above-mentioned rotary positioning structure is as follows: in the locked state, under the action of the locking spring 7454, one part of the locking slider 53 is positioned in the first locking groove 65521 and the other part is positioned in the second locking groove 65512, so that the locking seat 52 and the unlocking seat 51 cannot slide relatively; when the button cap 55 is pressed down, the unlocking protrusion 552 of the button cap 55 pushes the locking slider 53 into the first locking groove 65521 completely, and the magnet locking and unlocking seat 51 can rotate relatively.

Referring to fig. 6, the front frame 11 of the bottom frame 1 has two parallel lifting slide bars 111 at two sides of the seat. The lifting slide bar 111 is provided with a plurality of engaging grooves 112 at intervals along a length direction thereof.

Referring to fig. 1, fig. 6 and fig. 7, the left and right sides of the seat 2 are provided with a lifting clamping seat 6 matched with the lifting slide bar 111, and the lifting clamping seat 6 is provided with a sliding channel 61 matched with the lifting slide bar 111, an installation cavity 62 located at one side of the sliding channel 61, and a locking assembly arranged in the installation cavity 62 and used for realizing the positioning of the seat on the lifting slide bar 111. Wherein, the lifting cassette 6 is provided with a plurality of sliding abutting pieces 63 abutting against the side wall of the lifting slide bar 111 along the length direction thereof at intervals in the sliding channel 61, and the lifting cassette 6 is further provided with a reinforcing rib 64 connecting the sliding abutting pieces 63 positioned at the same side of the lifting slide bar 111.

The inner wall of the mounting cavity 62 of the lifting clamping seat 6 is provided with a locking groove 65 matched with the clamping groove 112.

The locking assembly includes a locking member and a locking spring 74. The locking member includes a locking cover 71, a locking piece 72 fixed to the inside of the locking cover 71, and a locking shaft 73 passing through both the locking cover 71 and the locking piece 72. Wherein the locking piece 72 has a locking hook portion 721 which can pass through the locking groove 65 and cooperate with the catching groove 112. One end of the lock spring 7454 abuts against the lock cover 71 of the locking member and the other end abuts against the bottom surface of the mounting cavity 62, so that the lock hook 721 tends to be inserted into the catching groove 112 all the time.

Referring to fig. 7 and 8, in order to facilitate the installation of the locking assembly on the lifting clamp 6, the lifting clamp 6 includes a fixing base 6a fixed on the seat 2, a fixing cover 6b covering the fixing base 6a, and reinforcing sleeves 6c located on two sides of the fixing base 6a and engaged with the lifting slide rod 111. One sides of the fixed seat 6a and the fixed cover 6b are matched with the positioning clamping hook 6b1 through the positioning clamping groove 6a1, and the other sides are connected and fixed through screws.

Referring to fig. 1 and 9, the left and right sides of the seat 2 are respectively provided with a hinged seat 21, a dinner plate handrail 8 respectively hinged on the two hinged seats 21, and a children dinner plate 3 mounted on the two dinner plate handrails 8. Wherein, articulated seat 21 circumference interval is equipped with joint groove 112, in this embodiment, is provided with two joint grooves 112 on the articulated seat 21, is dining card groove 211 and accomodates the draw-in groove 212 respectively.

Referring to fig. 10, a tray rail 8 has a snap cavity 81 and a snap assembly mounted in the snap cavity 81. Clamping cavity 81 has a clamping interface 811 facing hinge base 21, a button opening 812 at the lower end of clamping cavity 81, and a spring clamp 813 located at the end away from clamping interface 811.

The latch assembly includes a latch link 82, a latch button 83, and a latch spring 84.

Referring to fig. 10 and 11, the latch link 82 is Z-shaped and includes a latch section 821, a turn section 822, and a driving section 823 in this order. The latch link 82 has a latch plug 824 at an end of the latch section 821, and the latch plug 824 passes through the latch interface 811 and mates with the latch slot 112 on the hinge base 21. Wherein, because the cooperation of joint plug 824 and joint interface 811 makes joint plug 824 slide along the axis of joint interface 811 all the time. To assist in sliding the snap plug 824, the dining plate arm rest 8 also has an abutment post 814 that abuts the side of the return section 822 facing the snap section 821.

The latch link 82 is provided with a hinge post 825 at the driving section 823, and a spring post 826 for the latch spring 84 to be inserted into is also provided at the driving section 823.

One end of the clamping button 83 close to the clamping plug is hinged to the clamping cavity 81, and the other end of the clamping button 83 is provided with a hinge sheet 831, and the hinge sheet 831 is provided with a strip-shaped groove 832 matched with the hinge inserting column 825. The hinge posts 825 can slide in the strip groove 832, and the strip groove 832 is inclined downwards in a direction away from the clamping plug 824.

One end of clamping spring 84 is clamped in spring clamping groove 813, and the other end is inserted into spring inserting column 826 of clamping connecting rod 82, so that clamping plug 824 of clamping connecting rod 82 always tends to be inserted into clamping groove 112 of hinge base 21.

When the clamping plug 824 of the clamping connecting rod 82 is matched with the dining clamping groove 211, the child dinner plate 3 is in a horizontal state, so that a child sitting on the lifting child dining chair can have a meal normally; when the clamping plug 824 of the clamping connecting rod 82 is matched with the storage clamping groove 212, the child dinner plate 3 is arranged in an upward inclined mode, the occupied area of the lifting child dining chair can be reduced, and therefore the lifting child dining chair can be conveniently stored.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (10)

1. A lifting child dining chair comprises a chair seat (2) and a bottom support (1), and is characterized in that the bottom support (1) is provided with lifting slide bars (111) on the left side and the right side of the chair seat (2) respectively, and the lifting slide bars (111) are provided with a plurality of clamping grooves (112) at intervals along the length direction; the left side and the right side of the seat (2) are both provided with a lifting clamping seat (6) matched with the lifting slide bar (111), and a locking component for positioning the seat (2) on the lifting slide bar (111) is arranged in the lifting clamping seat (6); the lifting clamping seat (6) is provided with a sliding channel (61) matched with the lifting sliding rod (111) and a mounting cavity (62) for mounting the locking component, and a locking groove (65) matched with the clamping groove (112) is formed in the inner wall of the mounting cavity (62) of the lifting clamping seat (6); the locking assembly includes a locking member and a locking spring (74); the locking piece is hinged in the mounting cavity (62) and is provided with a locking hook part (721) matched with the clamping groove (112); the locking spring (74) is abutted against one end of the locking piece and enables the locking hook part (721) to always have the tendency of being inserted into the clamping groove (112).

2. The lifting children's dining chair according to claim 1, wherein the lifting seat (6) has a plurality of sliding abutting pieces (63) abutting against the side walls of the lifting slide bar (111) at intervals along the length direction of the sliding channel (61), and the lifting seat (6) further has a rib (64) connecting the sliding abutting pieces (63) located at the same side of the lifting slide bar (111).

3. The elevating children's dining chair according to claim 2, wherein the locking member comprises a locking cover (71), a locking plate (72) fixed inside the locking cover (71), and a locking shaft (73) penetrating both the locking cover (71) and the locking plate (72), the locking hook (721) is provided on the locking plate (72), and the elevating cassette (6) is further provided with a locking opening through which the locking cover (71) partially protrudes out of the mounting cavity (62).

4. The lifting children's dining chair according to claim 3, wherein the lifting clamping seat (6) comprises a fixed seat (6a) fixed on the chair seat (2), a fixed cover (6b) covering the fixed seat (6a), and reinforcing sleeves (6c) which are positioned at two sides of the fixed seat (6a) and matched with the lifting slide bars (111); one side of the fixed seat (6a) and one side of the fixed cover (6b) are matched with the positioning clamping hook (6b1) through the positioning clamping groove (6a1), and the other side of the fixed seat is connected and fixed through a screw.

5. The lifting children's dining chair according to claim 1, wherein the left and right sides of the chair seat (2) are respectively provided with a hinged seat (21), a plate rail (8) hinged to the two hinged seats (21), and a children's plate (3) mounted on the two plate rails (8).

6. The elevating children's dining chair according to claim 5, wherein the hinge seats (21) are circumferentially provided with snap grooves (112) at intervals; the dinner plate handrail (8) is provided with a clamping cavity (81) and a clamping component arranged in the clamping cavity (81); the clamping cavity (81) is provided with a clamping interface (811) facing the hinge seat (21) and a button opening (812) positioned at the lower end of the clamping cavity (81); the clamping assembly comprises a clamping connecting rod (82), a clamping button (83) and a clamping spring (84); one end of the clamping connecting rod (82) is provided with a clamping plug (824) which penetrates through the clamping interface (811) and is matched with the clamping groove (112), the clamping plug (824) is matched with the clamping interface (811) to enable the clamping plug (824) to slide along the axis of the clamping interface (811) all the time, and one end, far away from the clamping plug (824), of the clamping connecting rod (82) is provided with a hinged inserting column (825); one end, close to the clamping plug (824), of the clamping button (83) is hinged to the clamping cavity (81), a hinged sheet (831) is arranged at the other end of the clamping button, the hinged sheet (831) is provided with a strip-shaped groove (832) for inserting the hinged inserting column (825), the hinged inserting column (825) can slide in the strip-shaped groove (832), and the strip-shaped groove (832) is arranged in a downward inclined mode along the direction far away from the clamping plug (824); the clamping spring (84) enables the clamping plug (824) to always have the tendency to be inserted into the clamping groove (112).

7. The elevating children's dining chair of claim 6, wherein the latch link (82) is Z-shaped and comprises a latch section (821), a turn section (822) and a driving section (823), the latch section (821) is located at the lower side of the driving section (823), the latch plug (824) is located at the end of the latch section (821), and the hinge post (825) is located at the end of the driving section (823); the dinner plate handrail (8) is also provided with an abutting column (814) abutting against one side of the turning section (822) facing the clamping section (821).

8. The liftable children's dining chair according to claim 1, wherein the base frame (1) comprises a U-shaped front frame (11) and a U-shaped rear frame (12), the lifting slider (111) being arranged on the front frame (11); the bottoms of the front support (11) and the rear support (12) are provided with support leg assemblies (4); the supporting leg assembly (4) comprises a metal keel (41) arranged at the bottom of the front support (11)/the rear support (12) and sliding supporting legs (42) respectively arranged at two ends of the metal keel (41), the sliding supporting legs (42) comprise sleeves (421) sleeved at the end parts of the metal keel (41) and supporting leg seats (422) supported on the ground, and supporting planes (423) are arranged at the bottoms of the supporting leg seats (422).

9. The elevating children's dining chair according to claim 8, wherein the leg assembly (4) further comprises a hollow leg sheath (43), the metal keel (41), the middle of the bottom bar of the front support (11)/the middle of the bottom bar of the rear support (12), and the sliding leg (42) are all located in the cavity of the leg, and the leg sheath (43) is further provided with a through hole for the bottom of the supporting leg seat (422) to protrude.

10. The elevating children's dining chair according to claim 9, wherein said supporting plane (423) is provided with supporting protrusions (424) for abutting against the ground.

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