Multifunctional child dining chair

Abstract

The utility model discloses a children's dining chair with various functions relates to children's chair field, including two support leg, seat, backrest and dinner plate, seat can be provided between the two support leg in multi-gear lifting, the backrest is connected to the rear end of seat, the angle of backrest can be set in multi-gear adjustment relative to the seat, and the dinner plate is connected to the back end of the seat in the multi-gear adjustment relative to the seat in the multi-gear adjustment relative to the seat in the multi-gear adjustment relative to the seat in the multi-gear adjustment relative to the seat. The front end face of the seat is connected with a dinner plate seat, and the dinner plate can be arranged on the top of the dinner plate seat in a front-back multi-gear adjusting mode. The dinner plate can be adjusted front and back relative to the seat so as to adapt to children of different body types, especially fat children; the angle of the backrest can be adjusted relative to the seat, so that the most comfortable leaning angle is provided for children with different body types; meanwhile, the height of the seat can be adjusted so as to adapt to dining tables with different heights and comfortable feeding height. The multifunctional dining chair is more diversified in function and more humanized in design, can meet different use requirements, and provides the most comfortable dining chair for children.

Description

Technical Field

[0001] The utility model relates to the field of children's chairs, in particular to a children's dining chair with multiple functions. Background Art

[0002] Children's dining chairs are chairs specially designed for children to eat. Children's dining chairs not only help children develop the habit of eating in dining chairs, avoiding the trouble of being chased to feed them, but also, when children sit in a chair that suits them, they will not fall over due to instability, and their hands can be freed to hold the tableware by themselves, while also exercising the coordination of the baby's hands, eyes, and brain. Existing children's dining chairs have relatively single functions and cannot meet multiple usage needs. For example, the dining tray cannot be adjusted forward and backward, making it difficult for larger children to enter the chair, the backrest cannot be adjusted to provide comfortable support for the child's back, and the height of the seat cannot be adjusted to meet the height requirements of different dining tables. Utility Model Content

[0003] The utility model provides a children's dining chair with multiple functions, and its main purpose is to overcome the problem that the existing children's dining chair cannot meet multiple usage requirements.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A children's dining chair with multiple functions comprises two supporting legs, a seat, a backrest and a dining tray, wherein the seat is arranged between the two supporting legs and can be raised and lowered in multiple stages, the backrest is connected to the rear end of the seat, and the angle of the backrest relative to the seat can be adjusted in multiple stages, a dining tray seat is connected to the front end surface of the seat, and the dining tray is arranged on the top of the dining tray seat and can be adjusted forward and backward in multiple stages.

[0006] Furthermore, the front end surface of the seat is provided with two inner sleeve rods arranged on the left and right, and the bottom of the dining plate seat is provided with two outer sleeve tubes arranged on the left and right. The two inner sleeve rods and the two outer sleeve tubes are both inclined, each inner sleeve rod corresponds to an outer sleeve tube, and the inner sleeve rod is sleeved in the corresponding outer sleeve tube.

[0007] Furthermore, the left and right side surfaces of the dinner plate seat are provided with a plurality of slots arranged front to back, the left and right bottom ends of the dinner plate are provided with accommodating slots, a movable part that can move left and right is provided in the accommodating slot, a tongue that can be inserted into the slot is provided at one end of the movable part close to the dinner plate seat, and a dinner plate adjustment button that drives the movable part to move is provided at the front bottom of the dinner plate.

[0008] Furthermore, the receiving groove is a bottom opening structure, the receiving groove is provided with two movable grooves arranged front and back, the top of the movable part is provided with two clamping parts arranged front and back, each clamping part corresponds to a movable groove, the clamping part is clamped in the movable groove, the bottom of the dinner plate is provided with two left-right symmetrical placement grooves, the two placement grooves are each provided with a pull rod, the pull rods in the two placement grooves are symmetrically arranged, one end of the pull rod is located in the dinner plate adjustment button, the other end of the pull rod is located in the receiving groove, the dinner plate adjustment button is provided with two left-right symmetrical first inclined surfaces, one end of the pull rod is provided with a second inclined surface, each first The inclined surface corresponds to a second inclined surface and fits with each other, a third inclined surface is provided on the top of the movable part, and a fourth inclined surface fits with the third inclined surface is provided on the other end of the pull rod, a first spring that interferes with the bottom of the dinner plate is provided in the dinner plate adjustment button, and a second spring that interferes with the movable part is provided in the accommodating groove, two first locking columns arranged on the left and right are provided at the bottom of the front end of the dinner plate, and two first strip grooves arranged on the left and right are provided at the bottom of the dinner plate adjustment button, each first locking column corresponds to a first strip groove and is located in the first strip groove, and a groove for the dinner plate adjustment button to move is provided at the front end of the dinner plate seat.

[0009] Furthermore, the seat includes a seat body and two seat shells, the two seat shells are respectively connected to the left and right sides of the seat body, and two openings are formed at the rear end after the seat body and the two seat shells are connected.

[0010] Furthermore, the backrest includes a front backrest shell and a rear backrest shell connected to each other, the front end of the front backrest shell is provided with two plug plates arranged on the left and right, each plug plate corresponds to an opening and is inserted into the opening, the bottom of the front backrest shell is hinged to the rear end top of the seat body, the two plug plates are both hollow structures, and lifting pieces are provided in the two plug plates, and a bayonet is provided at the bottom of the lifting piece, and the two ends of the bayonet respectively extend out of the two side surfaces of the plug plate, and a first arc channel is provided on the side of the seat body close to the plug plate, and the first arc channel is provided with a plurality of first pin grooves arranged at intervals and for the bayonet to be snapped into, and a second arc channel is provided on the side of the seat shell close to the plug plate, and the second arc channel is provided with a plurality of second pin grooves arranged at intervals and for the bayonet to be snapped into, a backrest adjustment button is provided at the rear end of the front backrest shell to drive the lifting piece to rise, and the rear backrest shell is provided with an operating groove directly opposite to the backrest adjustment button.

[0011] Furthermore, the two sides of the plug plate are provided with a second strip groove, the two ends of the bayonet pass through the corresponding second strip grooves, the plug plate is provided with a pin rod, the lifting member is provided with a vertical spring groove, a third spring is provided in the spring groove, the pin rod passes through the top of the spring groove, the top of the third spring conflicts with the pin rod, and the bottom of the third spring conflicts with the bottom of the spring groove. The backrest adjustment button is connected with two left-right symmetrical first pull ropes, each first pull rope corresponds to a lifting member, one end of the first pull rope is connected to the top of the lifting member, a spring conflicting portion and two limit plates arranged on the left and right are provided at the top of the rear end of the front backrest shell, the backrest adjustment button is located between the two limit plates and can move up and down between the two limit plates, a fourth spring is provided between the spring conflicting portion and the backrest adjustment button, a fifth inclined surface inclined forward is provided at the lower part of the rear end surface of the backrest adjustment button, the top of the fifth inclined surface can conflict with the bottom of the operating groove, and a convex strip is formed on the rear end surface of the backrest adjustment button, and the convex strip is located in the operating groove.

[0012] Furthermore, a button box is provided at the bottom of the seat body, and a seat adjustment button which can be moved forward and backward is provided in the button box, and the front end of the seat adjustment button extends out of the button box, and the two seat shells are provided with a pin which can be moved left and right, and a guide block is provided on the side of the seat shell close to the supporting leg, and a guide groove is provided on the side of the supporting leg close to the seat shell, the guide block is located in the guide groove, and one end of the pin close to the supporting leg extends out of the guide block, and a plurality of sockets arranged up and down are provided in the guide groove, and the pin is inserted into the socket, and a second pull rope is connected between the seat adjustment button and the pin.

[0013] Furthermore, a cover body is provided at the bottom of the button box, two second locking columns arranged on the left and right are provided in the button box, and the seat adjustment button is provided with two third strip grooves arranged on the left and right, each third strip groove corresponds to a locking column, and the locking column passes through the third strip groove and is connected to the cover body by screw locking, a fifth spring that conflicts with the seat adjustment button is provided in the button box, and a sixth spring that conflicts with the pin is provided in the seat shell.

[0014] Furthermore, the two supporting legs each include a front supporting tube and a rear supporting tube, the rear end of the front supporting tube is provided with a connecting tube, the rear end of the connecting tube is provided with a first hinge part, the top of the rear supporting tube is connected with an inner sleeve, the top of the inner sleeve is provided with a second hinge part hinged with the first hinge part, the inner sleeve is provided with a locking pin that can move up and down, the top of the locking pin extends out of the inner sleeve, the bottom of the connecting tube is provided with a locking pin hole for inserting the locking pin, the top outer side surface of the rear supporting tube is provided with a sliding torsion, the front end of the sliding torsion is provided with a connecting rod, the rear supporting tube is provided with a fourth strip groove, the inner sleeve is provided with a fifth strip groove directly opposite to the fourth strip groove, the connecting rod passes through the fourth strip groove and the fifth strip groove and is connected with the locking pin, the inner sleeve is provided with a seventh spring that conflicts with the locking pin, and the bottom rear side surface of the rear supporting tube is provided with a roller.

[0015] Furthermore, two left-right symmetrical footrest connecting rods are provided at the bottom of the front end of the seat body, a U-shaped footrest is provided between the two footrest connecting rods, and the U-shaped footrest is rotatable relative to the two footrest connecting rods; first tooth grooves are provided at both ends of the U-shaped footrest, second tooth grooves are provided on one side of the two footrest connecting rods, gears are provided between the first tooth groove and the second tooth groove, the gears can move between the first tooth groove and the second tooth groove and mesh with the first tooth groove and the second tooth groove, an eighth spring that conflicts with the gear is provided in the first tooth groove, a button groove is provided on one side of the two footrest connecting rods, a button is provided in the button groove, the button is provided with a contact piece, and the contact piece penetrates into the second tooth groove and conflicts with the gear.

[0016] From the above description of the utility model, it can be seen that compared with the prior art, the utility model has the following advantages: the dining tray can be adjusted forward and backward relative to the seat to accommodate children of different body shapes, especially fatter children; the angle of the backrest can be adjusted relative to the seat to provide the most comfortable leaning angle for children of different body shapes; at the same time, the height of the seat can also be adjusted to accommodate dining tables of different heights and a comfortable feeding height. The utility model has more diverse functions and a more humanized design, which can meet different usage needs and provide the most comfortable dining chair for children. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model.

[0018] Figure 2 This is a connection structure diagram of the dining tray and the dining tray seat of the utility model.

[0019] Figure 3 This is a structural exploded view of the dining tray and the dining tray seat of the utility model.

[0020] Figure 4This is a structural exploded view of the dining tray and the dining tray seat of the utility model at another angle.

[0021] Figure 5 This is a connection structure diagram of the seat and backrest of the utility model.

[0022] Figure 6 This is a structural exploded view of the seat and backrest of the utility model.

[0023] Figure 7 This is a structural exploded view of the seat and backrest of the utility model at another angle.

[0024] Figure 8 for Figure 7 Exploded view of the structure without the backrest.

[0025] Fig. 9 for Figure 8 Exploded view of the structure from another angle.

[0026] Fig.10 This is a structural exploded view of the seat of the utility model.

[0027] Fig.11 It is a structural diagram of the support leg of the utility model.

[0028] Fig.12 This is a structural exploded view of the support leg of the utility model.

[0029] Fig.13 for Fig.12 Exploded view of the structure from another angle. DETAILED DESCRIPTION

[0030] Reference Figure 1 and Figure 2 A children's dining chair with various functions includes two supporting legs 1, a seat 2, a backrest 3 and a dining tray 4. The seat 2 can be raised and lowered in multiple stages and is arranged between the two supporting legs 1. The backrest 3 is connected to the rear end of the seat 2. The angle of the backrest 3 relative to the seat 2 can be adjusted in multiple stages. A dining tray seat 5 is connected to the front end surface of the seat 2. The dining tray 4 can be adjusted forward and backward in multiple stages and is arranged on the top of the dining tray seat 5.

[0031] Reference Figures 2 to 5The front end surface of the seat 2 is provided with two inner sleeve rods 20 arranged on the left and right, and the bottom of the dining tray seat 5 is provided with two outer sleeves 50 arranged on the left and right. The two inner sleeve rods 20 and the two outer sleeves 50 are arranged obliquely, and each inner sleeve rod 20 corresponds to an outer sleeve 50, and the inner sleeve rod 20 is sleeved in the corresponding outer sleeve 50. The left and right sides of the dining tray seat 5 are provided with a plurality of slots 51 arranged front and back, and the bottom of the left end and the bottom of the right end of the dining tray 4 are provided with a receiving slot 41, and a movable part 6 that can move left and right is provided in the receiving slot 41. The movable part 6 is provided with a tongue 61 that can be inserted into the slot 51 at one end close to the dining tray seat 5. In this embodiment, two tongues 61 are provided, and the two tongues 61 are arranged front and back. The front end bottom of the dining tray 4 is provided with a dining tray adjustment button 7 that drives the movable part 6 to move.

[0032] Reference Figures 2 to 4 The receiving groove 41 is a bottom opening structure. The receiving groove 41 is provided with two movable grooves 42 arranged front and back. The top of the movable member 6 is provided with two clamping parts 62 arranged front and back. Each clamping part 62 corresponds to one movable groove 42, and the clamping part 62 is clamped in the movable groove 42. The bottom of the dining tray 4 is provided with two left-right symmetrical placement grooves 43. The two placement grooves 43 are provided with pull rods 44. The pull rods 44 in the two placement grooves 43 are symmetrically arranged. One end of the pull rod 44 is located in the dining tray adjustment button 7, and the other end of the pull rod 44 is located in the receiving groove 41. The dining tray adjustment button 7 is provided with two left-right symmetrical first inclined surfaces 71. One end of the pull rod 44 is provided with a second inclined surface 45. Each first inclined surface 71 corresponds to one second inclined surface 45 and fits with each other. The top of the movable member 6 is provided with a third inclined surface 63. The other end of the pull rod 44 is provided with a fourth inclined surface 46 that fits with the third inclined surface 63. The plate adjustment button 7 is provided with a first spring 72 that contacts the bottom of the plate 4, the accommodating groove 41 is provided with a second spring 47 that contacts the movable part 6, the front end bottom of the plate 4 is provided with two first locking columns 48 arranged on the left and right, the bottom of the plate adjustment button 7 is provided with two first strip grooves 73 arranged on the left and right, each first locking column 48 corresponds to a first strip groove 73 and is located in the first strip groove 73, a gasket can be placed in the first strip groove 73, the plate adjustment button 7 is connected to the first locking column 48 by screws passing through the gasket and the first strip groove 73, and the front end of the plate seat 5 is provided with a groove 52 for the plate adjustment button 7 to move.

[0033] Reference Figures 2 to 4When the front-to-back position of the dinner plate 4 needs to be adjusted, the dinner plate adjustment button 7 is pulled forward. Under the cooperation of the first inclined surface 71 and the second inclined surface 45, the pull rod 44 moves toward the movable part 6 when the dinner plate adjustment button 7 is pulled forward. Under the cooperation of the third inclined surface 63 and the fourth inclined surface 46, the movable part 6 moves away from the dinner plate seat 5, so that the latch tongue 61 is separated from the original latching groove 51. At this time, the dinner plate 4 can be adjusted in the front-to-back direction; after releasing the dinner plate adjustment button 7, under the action of the first spring 72 and the second spring 47, the dinner plate adjustment button 7 and the movable part 6 automatically return to their positions, and the latch tongue 61 can be re-inserted into the new latching groove 51.

[0034] Reference Figures 5 to 9 The seat 2 includes a seat body 21 and two seat shells 22, the two seat shells 22 are respectively connected to the left and right sides of the seat body 21, and two openings 23 are formed at the rear end of the seat body 21 and the two seat shells 22 after being connected. The backrest 3 includes a front backrest shell 31 and a rear backrest shell 32 connected to each other, and the front end of the front backrest shell 31 is provided with two plug-in plates 33 arranged on the left and right, each plug-in plate 33 corresponds to an opening 23 and is inserted into the opening 23, the bottom of the front backrest shell 31 is hinged to the top of the rear end of the seat body 21, and the two plug-in plates 33 are both hollow structures. The two plug boards 33 are each provided with a lifting member 34, and a latch 35 is provided at the bottom of the lifting member 34, and the two ends of the latch 35 extend out of the two side surfaces of the plug board 33, respectively. The side of the seat body 21 close to the plug board 33 is provided with a first arc channel 24, and the first arc channel 24 is provided with a plurality of first pin grooves 25 arranged at intervals and for the latch 35 to be inserted into, and the side of the seat shell 22 close to the plug board 33 is provided with a second arc channel 26, and the second arc channel 26 is provided with a plurality of second pin grooves 27 arranged at intervals and for the latch 35 to be inserted into. The rear end of the front backrest shell 31 is provided with a backrest adjustment button 8 for driving the lifting member to rise, and the rear backrest shell 32 is provided with an operating slot 36 directly opposite to the backrest adjustment button 8.

[0035] Reference Figures 5 to 9The two sides of the plug plate 33 are provided with a second strip groove 37, and the two ends of the latch 35 pass through the corresponding second strip grooves 37. The plug plate 33 is provided with a pin rod 38, and the pulling member 34 is provided with a vertical spring groove 341. A third spring 342 is provided in the spring groove 341. The pin rod 38 passes through the top of the spring groove 341, and the top of the third spring 342 conflicts with the pin rod 38, and the bottom of the third spring 342 conflicts with the bottom of the spring groove 341. The backrest adjustment button 8 is connected to two left-right symmetrical first pull cords 81, each of which corresponds to a lifting member 34, and one end of the first pull cord 81 is connected to the top of the lifting member 34. The top of the rear end of the front backrest shell 31 is provided with a spring contact portion 39 and two limit plates 30 arranged on the left and right. The backrest adjustment button 8 is located between the two limit plates 30 and can move up and down between the two limit plates 30. A fourth spring 82 is provided between the spring contact portion 39 and the backrest adjustment button 8. The lower part of the rear end surface of the backrest adjustment button 8 is provided with a fifth inclined surface 83 inclined forward, and the top of the fifth inclined surface 83 can be in conflict with the bottom of the operating slot 36. The rear end surface of the backrest adjustment button 8 is formed with a convex strip 84, which is located in the operating slot 36 and is convenient for hand grasping.

[0036] Reference Figures 5 to 9 When the angle of the backrest 3 needs to be adjusted, the backrest adjustment button 8 is pulled upward, and the backrest adjustment button 8 pulls the lifting member 34 and the bayonet 35 up through the first pull rope 81, so that the two ends of the bayonet 35 are respectively disengaged from the originally matched first pin groove 25 and second pin groove 27, and the backrest 3 can be rotated relative to the seat 2; when the backrest adjustment button 8 is released, the lifting member 34 and the backrest adjustment button 8 are automatically reset under the action of the third spring 342 and the fourth spring 82, and the two ends of the bayonet 35 can be inserted into the new first pin groove 25 and the second pin groove 27.

[0037] Reference Figure 5 , Figure 6 , Figures 10 to 12The bottom of the seat body 21 is provided with a button box 10, and a seat adjustment button 11 that can move forward and backward is provided in the button box 10, and the front end of the seat adjustment button 11 extends out of the button box 10. The two seat shells 22 are provided with a latch 221 that can move left and right. The side of the seat shell 22 close to the support leg 1 is provided with a guide block 222, and the side of the support leg 1 close to the seat shell 22 is provided with a guide groove 12, and the guide block 222 is located in the guide groove 12. One end of the latch 221 close to the support leg 1 extends out of the guide block 222, and a plurality of plug holes 121 arranged up and down are provided in the guide groove 12, and the latch 221 is inserted into the plug hole 121, and a second pull rope 111 is connected between the seat adjustment button 11 and the latch 221. A cover body 13 is provided at the bottom of the button box 10, and two second locking columns 101 arranged on the left and right are provided in the button box 10. The seat adjustment button 11 is provided with two third strip grooves 112 arranged on the left and right, and each third strip groove 112 corresponds to a locking column 101. The locking column 101 passes through the third strip groove 112 and is connected to the cover body 13 by screw locking. A fifth spring 102 that conflicts with the seat adjustment button 11 is provided in the button box 10, and a sixth spring 223 that conflicts with the latch 221 is provided in the seat shell 22.

[0038] Reference Figure 5 , Figure 6 , Figures 10 to 12 When the height of the seat 2 needs to be adjusted, the seat adjustment button 11 is pulled forward, and the seat adjustment button 11 pulls the latch 221 to disengage from the original matching socket 121 through the second pull rope 111. At this time, the seat 2 can be raised and lowered along the guide groove 12; when the seat adjustment button 11 is released, the seat adjustment button 11 and the latch 221 are automatically reset under the action of the fifth spring 102 and the sixth spring 223, and the latch 221 is inserted into the new socket 121.

[0039] Reference Figure 1 , Figures 11 to 13The two supporting legs 1 each include a front supporting tube 14 and a rear supporting tube 15. The rear end of the front supporting tube 14 is provided with a connecting tube 16. The rear end of the connecting tube 16 is provided with a first hinged portion 161. The top of the rear supporting tube 15 is connected with an inner sleeve 17. The top of the inner sleeve 17 is provided with a second hinged portion 171 hinged to the first hinged portion 161. A locking pin 18 that can move up and down is provided in the inner sleeve 17, and the top of the locking pin 18 extends out of the inner sleeve 17. A locking pin hole 162 for inserting the locking pin is provided at the bottom of the connecting tube 16. A sliding knob 19 is provided on the outer side surface of the top of the rear support tube 15, and a connecting rod 191 is provided at the front end of the sliding knob 19. The rear support tube 15 is provided with a fourth strip groove 151, and the inner sleeve 17 is provided with a fifth strip groove 172 that is opposite to the fourth strip groove 151. The connecting rod 191 passes through the fourth strip groove 151 and the fifth strip groove 172 and is connected to the locking pin 18. A seventh spring 173 that conflicts with the locking pin 18 is provided in the inner sleeve 17, and a roller 152 is provided on the rear side surface of the bottom of the rear support tube 15.

[0040] Reference Figure 1 , Figures 11 to 13 The rear support tube 15 can be folded relative to the front support tube 14. When the rear support tube 15 needs to be folded, the sliding knob 19 slides downward, and the sliding knob 19 drives the locking pin 18 to move downward and disengage from the locking pin hole 162. At this time, the rear support tube 15 can be folded relative to the front support tube 14. The seventh spring 173 is used to automatically reset the locking pin 18 and the sliding knob 19 after releasing the sliding knob 19. The roller 152 facilitates the overall movement of the dining chair.

[0041] Reference Figure 1 , Figure 5 and Figure 6 The front bottom of the seat body 21 is provided with two symmetrical footrest connecting rods 28, and a U-shaped footrest 29 is provided between the two footrest connecting rods 28. The U-shaped footrest 29 is rotatably arranged relative to the two footrest connecting rods 28. Both ends of the U-shaped footrest 29 are provided with a first tooth groove 291, and one side of the two footrest connecting rods 28 is provided with a second tooth groove 281. A gear 282 is provided between the first tooth groove 291 and the second tooth groove 281. The gear 282 can move between the first tooth groove 291 and the second tooth groove 281 and mesh with the first tooth groove 291 and the second tooth groove 281. An eighth spring 292 is provided in the first tooth groove 291 to interfere with the gear 282. A button groove 283 is formed on one side of the two pedal connecting rods 28 . A button 284 is formed in the button groove 283 . The button 284 is provided with a resisting piece 285 . The resisting piece 285 penetrates into the second tooth groove 281 and resists the gear 282 .

[0042] Reference Figure 1 , Figure 5 and Figure 6 The U-shaped footrest 29 can rotate relative to the two footrest connecting rods 28. When the U-shaped footrest 29 needs to be rotated, the button 284 on the two footrest connecting rods 28 is pressed, and the button 284 drives the gear 282 to disengage from the second tooth groove 281 and only engage with the first tooth groove 291. At this time, the U-shaped footrest 29 can be rotated; when the button 284 is released, the gear 282 is re-engaged with the first tooth groove 291 and the second tooth groove 281 at the same time under the action of the eighth spring 292, thereby fixing the U-shaped footrest 29.

[0043] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.

Claims

1. A children's dining chair with multiple functions, characterized by: The utility model comprises two supporting legs, a seat, a backrest and a dining tray. The seat can be raised and lowered in multiple stages and is arranged between the two supporting legs. The backrest is connected to the rear end of the seat. The angle of the backrest relative to the seat can be adjusted in multiple stages. The front end surface of the seat is connected to a dining tray seat. The dining tray can be adjusted forward and backward in multiple stages and is arranged on the top of the dining tray seat.

2. A multifunctional children's dining chair as claimed in claim 1, characterized in that: The front end surface of the seat is provided with two inner sleeve rods arranged on the left and right, and the bottom of the dining plate seat is provided with two outer sleeve tubes arranged on the left and right. The two inner sleeve rods and the two outer sleeve tubes are both inclined, each inner sleeve rod corresponds to an outer sleeve tube, and the inner sleeve rod is sleeved in the corresponding outer sleeve tube.

3. A multifunctional children's dining chair as claimed in claim 1, characterized in that: The left and right sides of the dinner plate seat are provided with a plurality of slots arranged front and back, the left and right bottom ends of the dinner plate are provided with accommodating slots, a movable part movable left and right is provided in the accommodating slot, a tongue insertable into the slot is provided at one end of the movable part close to the dinner plate seat, and a dinner plate adjustment button for driving the movable part to move is provided at the front bottom of the dinner plate.

4. A multifunctional children's dining chair as claimed in claim 3, characterized in that: The receiving groove is a bottom opening structure, the receiving groove is provided with two movable grooves arranged front and back, the top of the movable part is provided with two clamping parts arranged front and back, each clamping part corresponds to a movable groove, and the clamping part is clamped in the movable groove, the bottom of the dinner plate is provided with two left-right symmetrical placement grooves, the two placement grooves are each provided with a pull rod, the pull rods in the two placement grooves are symmetrically arranged, one end of the pull rod is located in the dinner plate adjustment button, and the other end of the pull rod is located in the receiving groove, the dinner plate adjustment button is provided with two left-right symmetrical first inclined surfaces, one end of the pull rod is provided with a second inclined surface, each first inclined surface Corresponding to a second inclined surface and fitting each other, a third inclined surface is provided on the top of the movable part, and a fourth inclined surface fitting with the third inclined surface is provided on the other end of the pull rod. A first spring that interferes with the bottom of the dinner plate is provided in the dinner plate adjustment button, and a second spring that interferes with the movable part is provided in the accommodating groove. Two first locking columns arranged on the left and right are provided at the bottom of the front end of the dinner plate, and two first strip grooves arranged on the left and right are provided at the bottom of the dinner plate adjustment button, each first locking column corresponds to a first strip groove and is located in the first strip groove, and a groove for the dinner plate adjustment button to move is provided at the front end of the dinner plate seat.

5. A multifunctional children's dining chair as claimed in claim 1, characterized in that: The seat comprises a seat body and two seat shells, wherein the two seat shells are respectively connected to the left and right sides of the seat body, and two openings are formed at the rear end of the seat body after the seat body and the two seat shells are connected.

6. A multifunctional children's dining chair as claimed in claim 5, characterized in that: The backrest comprises a front backrest shell and a rear backrest shell connected to each other, the front end of the front backrest shell is provided with two plug plates arranged on the left and right, each plug plate corresponds to an opening and is inserted into the opening, the bottom of the front backrest shell is hinged to the rear end top of the seat body, the two plug plates are both hollow structures, and lifting pieces are provided in the two plug plates, and a bayonet is provided at the bottom of the lifting piece, and the two ends of the bayonet respectively extend out of the two side surfaces of the plug plate, and a first arc-shaped channel is provided on the side of the seat body close to the plug plate, and the first arc-shaped channel is provided with a plurality of first pin grooves arranged at intervals and for the bayonet to be snapped into, and a second arc-shaped channel is provided on the side of the seat shell close to the plug plate, and the second arc-shaped channel is provided with a plurality of second pin grooves arranged at intervals and for the bayonet to be snapped into, a backrest adjustment button for driving the lifting piece to rise is provided at the rear end of the front backrest shell, and an operating groove directly opposite to the backrest adjustment button is provided in the rear backrest shell.

7. A multifunctional children's dining chair as claimed in claim 6, characterized in that: The two sides of the plug plate are provided with a second strip groove, the two ends of the bayonet pass through the corresponding second strip grooves, the plug plate is provided with a pin rod, the lifting member is provided with a vertical spring groove, a third spring is provided in the spring groove, the pin rod passes through the top of the spring groove, the top of the third spring conflicts with the pin rod, and the bottom of the third spring conflicts with the bottom of the spring groove. The backrest adjustment button is connected with two left-right symmetrical first pull ropes, each first pull rope corresponds to a lifting member, one end of the first pull rope is connected to the top of the lifting member, a spring conflicting portion and two limit plates arranged on the left and right are provided at the top of the rear end of the front backrest shell, the backrest adjustment button is located between the two limit plates and can move up and down between the two limit plates, a fourth spring is provided between the spring conflicting portion and the backrest adjustment button, a fifth inclined surface inclined forward is provided at the lower part of the rear end surface of the backrest adjustment button, the top of the fifth inclined surface can conflict with the bottom of the operating groove, and a convex strip is formed on the rear end surface of the backrest adjustment button, and the convex strip is located in the operating groove.

8. A multifunctional children's dining chair as claimed in claim 5, characterized in that: A button box is provided at the bottom of the seat body, and a seat adjustment button which can be moved forward and backward is provided in the button box, and the front end of the seat adjustment button extends out of the button box. A latch which can be moved left and right is provided in each of the two seat shells. A guide block is provided on the side of the seat shell close to the support leg, and a guide groove is provided on the side of the support leg close to the seat shell. The guide block is located in the guide groove, and one end of the latch close to the support leg extends out of the guide block. A plurality of sockets arranged up and down are provided in the guide groove, and the latch is inserted into the socket. A second pull rope is connected between the seat adjustment button and the latch.

9. A multifunctional children's dining chair as claimed in claim 8, characterized in that: A cover body is provided at the bottom of the button box, and two second locking columns arranged on the left and right are provided in the button box. The seat adjustment button is provided with two third strip grooves arranged on the left and right, and each third strip groove corresponds to a locking column. The locking column passes through the third strip groove and is locked with the cover body by screws. A fifth spring that conflicts with the seat adjustment button is provided in the button box, and a sixth spring that conflicts with the latch is provided in the seat shell.

10. The multifunctional children's dining chair according to claim 1, characterized in that: The two supporting legs each include a front supporting tube and a rear supporting tube, the rear end of the front supporting tube is provided with a connecting tube, the rear end of the connecting tube is provided with a first hinge part, the top of the rear supporting tube is connected with an inner sleeve, the top of the inner sleeve is provided with a second hinge part hinged with the first hinge part, the inner sleeve is provided with a locking pin that can move up and down, the top of the locking pin extends out of the inner sleeve, the bottom of the connecting tube is provided with a locking pin hole for inserting the locking pin, the top outer side surface of the rear supporting tube is provided with a sliding torsion, the front end of the sliding torsion is provided with a connecting rod, the rear supporting tube is provided with a fourth strip groove, the inner sleeve is provided with a fifth strip groove directly opposite to the fourth strip groove, the connecting rod passes through the fourth strip groove and the fifth strip groove and is connected with the locking pin, the inner sleeve is provided with a seventh spring that conflicts with the locking pin, and the bottom rear side surface of the rear supporting tube is provided with a roller.

11. A multifunctional children's dining chair as claimed in claim 5, characterized in that: Two left-right symmetrical footrest connecting rods are provided at the bottom of the front end of the seat body, a U-shaped footrest is provided between the two footrest connecting rods, and the U-shaped footrest is rotatably arranged relative to the two footrest connecting rods; first tooth grooves are provided at both ends of the U-shaped footrest, and second tooth grooves are provided on one side of the two footrest connecting rods, a gear is provided between the first tooth groove and the second tooth groove, the gear can move between the first tooth groove and the second tooth groove and mesh with the first tooth groove and the second tooth groove, an eighth spring that conflicts with the gear is provided in the first tooth groove, a button groove is provided on one side of the two footrest connecting rods, a button is provided in the button groove, and the button is provided with a conflicting piece, and the conflicting piece penetrates into the second tooth groove and conflicts with the gear.

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