Linkage folding infant high dining chair

Abstract

The invention discloses a linkage folding infant high-foot dining chair which comprises a supporting mechanism and a seat, the seat is installed above the supporting mechanism in a rotary matching mode, the supporting mechanism comprises two joint seats, front supporting legs, rear supporting legs and a linkage lifting assembly, the two joint seats are oppositely arranged, and the front supporting legs are arranged on the front supporting legs. Front supporting legs and rear supporting legs are installed on the two joint seats in a rotary connection mode, and the two rear supporting legs and the front supporting legs are fixed through connecting rods. During unlocking, the supporting legs and the seat are folded in a linkage mode, so that folding and unfolding are facilitated, and meanwhile the supporting legs are in a standing state after being folded.

Description

Technical Field

[0001] The invention relates to the field of baby dining chair equipment, and in particular to a linked folding high-legged dining chair for infants and young children. Background Art

[0002] Most of the baby dining tables and chairs on the market now have seats and legs integrated into one and cannot be folded, which takes up a lot of space and is inconvenient to carry; Patent No. 202323624426.8, patent name is a baby dining chair, the above patent discloses that the two supporting legs of the dining chair can be folded, and the seat can be disassembled and assembled from the supporting legs, so that when folding, the seat and the supporting legs need to be separated into two parts, so that the next time the dining chair is unfolded, the supporting legs need to be unfolded, and then the seat and the supporting legs can be assembled, which prolongs the assembly time. Summary of the invention

[0003] In view of the above-mentioned deficiencies of the prior art, the present invention proposes a linkage folding high chair for infants and young children. When unlocked, the supporting legs and the seat are linked to fold, which is convenient for folding and unfolding.

[0004] To achieve the above-mentioned purpose, the scheme of the present invention is: a linkage folding infant high-leg dining chair, comprising a support mechanism and a seat, the seat is installed on the top of the support mechanism by means of rotational cooperation, the support mechanism comprises a joint seat, a front support leg, a rear support foot and a linkage lifting assembly, wherein there are two joint seats and the two joint seats are arranged opposite to each other, the front support foot and the rear support foot are installed on the two joint seats by means of rotational connection, and the two rear support feet and the front support foot are fixed by connecting rods; The front supporting legs and the rear supporting legs are both connected to the linkage lifting assembly, and the front supporting legs and the rear supporting legs are folded and unfolded to realize the lifting of the linkage lifting assembly; The seat is installed on the joint seat, a locking module is arranged on the joint seat, and a linkage module is arranged between the joint seat and the linkage lifting component. When the linkage lifting component rises, the rotation of the joint seat is realized through the linkage module.

[0005] Preferably, the joint seat includes a fixed seat and a rotating seat, the rotating seat is rotatably connected to the fixed seat, and the seat is installed on the rotating seat; the linkage module includes a sliding assembly and a first sliding groove, and a sliding assembly passing through the fixed seat is installed on the linkage lifting assembly, and a waist-shaped hole for the sliding assembly to pass through is opened on the fixed seat, and a first sliding groove extending from the inner layer to the outer periphery is opened on the rotating seat and the sliding assembly extends into the first sliding groove, wherein the angle at which the two ends of the first sliding groove are connected to the center of the joint seat is the angle of rotation of the joint seat.

[0006] Preferably, the linkage lifting assembly includes a lifting block and a hinge plate, the lifting block is located between the front supporting legs and the rear supporting legs, and the lifting block is hinged to the front supporting legs and the rear supporting legs through the hinge plate, wherein the hinge point between the hinge plate and the lifting block is higher than the hinge point between the hinge plate and the front supporting legs and the rear supporting legs.

[0007] Preferably, the locking assembly includes a mounting tube, a push-to-unlock module and a locking pin. The mounting tube is installed between the two rotating seats, the push-to-unlock module is installed in the mounting tube, the locking pin is arranged in the mounting tube and is connected to the push-to-unlock module, a pin hole arranged opposite to the locking pin is opened on the fixed seat, and the locking pin passes through the rotating seat and extends into the pin hole.

[0008] Preferably, the push-to-unlock module includes a push block, a sliding rod and an unlocking inclined plane. A through hole is opened in the mounting tube, and a push block is embedded in the through hole. Sliding rods that translate in the mounting tube are clamped in the mounting tubes on both sides of the push block. Springs that move the sliding rod outward are installed in the sliding rod and the mounting tube. An unlocking inclined plane is installed on the inner side of the sliding rod, and the outer side of the sliding rod is fixed to a locking pin. A V-shaped groove is provided on the side where the push block extends into the mounting tube, and the inner side of the V-shaped groove is in contact with the outer side surfaces of the unlocking inclined planes of the two sliding rods.

[0009] Preferably, support seats are installed on both sides of the bottom of the seat, the support seats are detachably connected to the rotating seat, and the bottom surfaces of the two support seats are flush, so that the seat can be disassembled and used separately.

[0010] Preferably, the chair includes a seat, a backrest, an armrest frame and a support frame, the two sides of the seat are installed on the inner side of the support seat, the backrest is rotatably connected to the support seat, the armrest frame and the backrest are rotatably connected through a locking joint, and the two ends of the support frame are respectively rotatably connected to the armrest frame and the support seat.

[0011] Preferably, a dining tray is installed on the armrest, a second slide groove is opened on the outer side of the armrest, sliders are installed below both sides of the dining tray, the sliders extend into the second slide groove for sliding fit, a pull pin is installed on the outer side of the slider, and a limiting hole for the pull pin to extend into is opened in the second slide groove.

[0012] Preferably, an arc groove is formed on the support seat and fits with the outer wall of the rotating seat, a slot is formed on the top of the rotating seat, a pin inserted into the slot is installed in the arc groove of the support, a translational elastic pin is installed at the bottom of the support seat, a hook with an inclined bottom is installed at the bottom of the elastic pin, a notch is formed on the inner side surface of the rotating seat for the elastic pin to extend into, a limiting slot is formed at the bottom of the notch and the hook is inserted into the limiting slot, and the top of the elastic pin extends outward and extends out of the support seat.

[0013] Preferably, a pedal is installed on the front supporting leg, and the front supporting leg and the rear supporting leg are inclined outward. The front supporting leg and the rear supporting leg are spliced ​​by multiple supporting rods. The joint of the two supporting rods is locked by an elastic protrusion, and the joint of every two supporting rods is an inclined surface.

[0014] Compared with the prior art, the advantages of the present invention are: When unlocked, the support legs and the seat are folded in conjunction, which makes it easy to fold and unfold. At the same time, the support legs are in a standing position after being folded; The seat can be used alone after being disassembled; The seats can be folded twice. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional view of the present invention.

[0016] Figure 2 It is the right side view of the present invention.

[0017] Figure 3 It is a rear view of the present invention.

[0018] Figure 4 Schematic diagram of the support mechanism of the present invention.

[0019] Figure 5 It is a schematic diagram of the joint seat, front supporting legs, rear supporting legs and linkage lifting components of the present invention.

[0020] Figure 6 It is a schematic diagram of the rotating seat, lifting block and sliding assembly of the present invention.

[0021] Figure 7 It is a schematic diagram of two joint seats and a push-to-unlock module of the present invention.

[0022] Figure 8 It is a schematic diagram of the press-to-unlock module of the present invention.

[0023] Fig. 9 It is a schematic diagram of the rotating seat and the supporting seat of the present invention.

[0024] Fig.10 It is a cross-sectional view of the rotating seat and the supporting seat of the present invention.

[0025] Fig.11 It is the right side view of the chair of the present invention.

[0026] Fig.12 A schematic diagram of removing the toothed disc from the locking joint of the present invention.

[0027] Fig.13 It is a schematic diagram of installing a toothed disc in the locking assembly of the present invention.

[0028] Fig.14 It is a schematic diagram of a dining tray and an armrest according to the present invention.

[0029] Fig.15 It is a schematic diagram of the splicing of the support rods of the present invention.

[0030] Among them, 1. Support mechanism, 2. Joint seat, 3. Fixed seat, 4. Rotating seat, 5. Front support leg, 6. Rear support foot, 7. Linkage lifting assembly, 8. Lifting block, 9. Hinge sheet, 10. Locking module, 11. Mounting tube, 12. Press to unlock module, 13. Press block, 14. V-groove, 15. Sliding rod, 16. Unlocking slope, 17. Lock pin, 18. Pin hole, 19. Linkage module, 20. Sliding assembly, 21. first slide groove, 22. seat, 23. seat surface, 24. backrest, 25. armrest, 26. locking joint, 27. support frame, 28. support seat, 29. arc groove, 30. slot, 31. latch, 32. elastic pin, 33. hook, 34. notch, 35. dining plate, 36. second slide groove, 37. slider, 38. pull pin, 39. limit hole, 40. pedal, 41. support rod, 42. elastic protrusion. DETAILED DESCRIPTION

[0031] The present invention will now be further described with reference to the accompanying drawings.

[0032] like Figure 1-15 As shown, a linkage folding high chair for infants and young children comprises a support mechanism 1 and a seat 22, wherein the seat 22 is installed on the top of the support mechanism 1 by means of rotational cooperation, the support mechanism 1 comprises a joint seat 2, a front support leg 5, a rear support foot 6 and a linkage lifting assembly 7, wherein there are two joint seats 2 and the two joint seats 2 are arranged opposite to each other on the left and right, a front support foot and a rear support foot 6 are installed on each joint seat 2, the tops of the front support foot and the rear support foot 6 are riveted to the outer wall of the joint seat 2 by means of rotational rivets, a cover is covered on the outer wall of the joint seat 2, a notch 34 is provided on the circumferential outer wall of the cover for making way for the front support foot and the rear support foot 6 to swing, the two front support feet are fixed by a connecting rod and the two ends of the connecting rod are installed on the front support feet by means of bolts, the two rear support feet 6 are fixed by a connecting rod and the two ends of the connecting rod are installed on the rear support feet 6 by means of bolts; The front supporting foot and the rear supporting foot 6 are both connected to the linkage lifting assembly 7. The front supporting foot and the rear supporting foot 6 are folded and unfolded to realize the lifting and lowering of the linkage lifting assembly 7. When the front supporting foot and the rear supporting foot 6 are folded and closed, the linkage lifting assembly 7 rises. When the front supporting foot and the rear supporting foot 6 are folded and opened, the linkage lifting assembly 7 falls. The seat 22 is installed on the joint seat 2, and a locking module 10 is provided on the joint seat 2. The joint seat 2 is locked by the locking module 10, so that the seat 22 cannot rotate. A linkage module 19 is provided between the joint seat 2 and the linkage lifting assembly 7. When the locking module 10 unlocks the joint seat 2, the front supporting legs 5 and the rear supporting legs are folded together, and the linkage lifting assembly 7 rises. The rotation of the joint seat 2 is driven by the linkage module 19, so that the seat 22 rotates and swings downward, so that the height of the seat 22 is lower than the joint seat 2. The seat 22 is driven to swing and fold downward by folding the front supporting legs 5 and the rear supporting legs. In this way, without disassembling the seat 22, the height of the dining chair can be lowered by lowering the seat 22. When it is used next time, the seat 22 is lifted up, so that the seat 22 swings upward relative to the joint seat 2. At the same time, the front supporting legs 5 and the rear supporting legs are opened, and the locking assembly locks the joint seat 2.

[0033] The joint seat 2 includes a fixed seat 3 and a rotating seat 4. The centers of the rotating seat 4 and the fixed seat 3 pass through the same rotating shaft, and the rotating connection between the rotating seat 4 and the fixed seat 3 is realized by the rotating shaft. The fixed seat 3 is located on the outside of the rotating seat 4, and the front supporting legs 5 and the rear supporting legs are riveted to the outer wall of the fixed seat 3 by rotating rivets. A cover is provided on the outside of the fixed seat 3, and the seat 22 is installed on the rotating seat 4 so that the seat 22 rotates with the rotating seat 4; the linkage module 19 includes a sliding component 20 and a first slide groove 21, and the sliding component 20 passing through the fixed seat 3 is installed on the linkage lifting component 7 by welding. The sliding component 20 is a sliding column, and a waist-shaped hole for the sliding component 20 to pass through is opened on the fixed seat 3, and a first slide groove 2 extending from the inner layer to the outer periphery is opened on the rotating seat 4. 1 and the sliding assembly 20 extends into the first sliding groove 21, wherein the angle at which the two ends of the first sliding groove 21 are connected to the center of the joint seat 2 is the rotation angle of the joint seat 2. Taking the right view of the present application as an example, the seat 22 needs to be rotated 90 degrees counterclockwise. The sliding groove of the present application adopts a combined groove spliced ​​with a transverse groove and a 90° arc groove. When the dining chair is in an unfolded state, the transverse groove is perpendicular to the vertical waist-shaped hole. When the linkage lifting assembly 7 rises, the linkage lifting assembly 7 drives the sliding assembly 20 to move upward, and at the same time, the sliding assembly 20 extends into the first sliding groove 21. When the sliding assembly 20 rises, the sliding assembly 20 drives the rotating seat 4 to rotate counterclockwise, thereby realizing the counterclockwise swing of the seat 22. The purpose of the arc groove at the end of the sliding seat is to obtain a large swing angle with a small stroke.

[0034] The linkage lifting assembly 7 includes a lifting block 8 and a hinge plate 9. The lifting block 8 is located between the front supporting leg 5 and the rear supporting leg. The lifting block 8 and the front supporting leg 5 and the rear supporting leg are hinged by the hinge plate 9, wherein the hinge point of the hinge plate 9 and the lifting block 8 is higher than the hinge point of the hinge plate 9 and the front supporting leg 5 and the rear supporting leg. In this way, when the front supporting leg 5 and the rear supporting leg are closed and folded, the hinge plate 9 pushes the lifting block 8 upward. A vertical guide groove is opened on the outer wall of the fixed seat 3, and the lifting block 8 is stuck in the guide groove for vertical lifting.

[0035] The locking assembly includes a mounting tube 11, a push-to-unlock module 12 and a locking pin 17. The mounting tube 11 is installed between the two rotating seats 4. Both ends of the mounting tube 11 are installed on the rotating seat 4 by bolt fastening. The push-to-unlock module 12 is installed in the mounting tube 11. The locking pin 17 is arranged in the mounting tube 11 and is connected to the push-to-unlock module 12. The locking pin 17 is retracted into the mounting tube 11 by pressing the push-to-unlock module 12. In this way, the unlocked rotating seat 4 can rotate relative to the fixed seat 3. A pin hole 18 is provided opposite to the locking pin 17, and the locking pin 17 passes through the rotating seat 4 and extends into the pin hole 18. When the unlocking rotating assembly loses pressure, the locking pin 17 is lifted out, and the locking pin 17 passes through the rotating seat 4 and extends into the pin hole 18 of the fixed seat 3 for locking. When unlocking is required, the pressing and unlocking module 12 is pressed down, the locking pin 17 withdraws from the pin hole 18, the rotating shaft rotates, and the locking pin 17 rotates and is misaligned with the pin hole 18. The pressing and unlocking module 12 is released, and the locking pin 17 is misaligned with the pin hole 18 and abuts against the inner side of the fixed seat 3.

[0036] The push-to-unlock module 12 includes a push block 13, a sliding rod 15 and an unlocking inclined surface 16. A through hole is opened in the middle section of the mounting tube 11, and the push block 13 is embedded in the through hole. The mounting tubes 11 on the left and right sides of the push block 13 are provided with sliding rods 15 that translate in the mounting tube 11. The outer wall of the sliding rod 15 fits the inner wall of the mounting tube 11. The sliding rod 15 and the mounting tube 11 are welded with a spring that moves the sliding rod 15 outward. The inner side of the sliding rod 15 is through the An unlocking bevel 16 is fixed by welding, and the outer side of the sliding rod 15 is fixed to the locking pin 17 by welding. A V-shaped groove 14 is opened on the side of the pressing block 13 extending into the mounting tube 11, and the inner side of the V-shaped groove 14 is in contact with the outer side surfaces of the unlocking bevels 16 of the two sliding rods 15. When the pressing block 13 is pressed, the unlocking bevel 16 slides along the inner wall of the V-shaped groove 14, so that the two sliding rods 15 move inward, and the locking pin 17 withdraws from the pin hole 18 to unlock the joint seat 2.

[0037] Support seats 28 are installed on the left and right sides of the bottom of the seat 22. The support seats 28 are detachably connected to the rotating seat 4, and the bottom surfaces of the two support seats 28 are flush, so that the seat 22 can be disassembled and used alone, that is, after the seat 22 is disassembled, the seat 22 can be directly placed on other chairs, so that the seat 22 can be used alone without the need for matching.

[0038] The seat 22 includes a seat surface 23, a backrest 24, an armrest frame 25 and a support frame 27. The left and right sides of the seat surface 23 are installed on the inner side of the support seat 28 by bolt fastening. The backrest 24 is rotatably connected to the support seat 28 (the bottom of the backrest 24 is fixed with a shaft by welding, and the shaft extends into the support seat 28 for rotational connection. An arc-shaped limit groove is opened on the inner wall of the support seat 28. An arc block is fixed on one side of the backrest 24 groove toward the support seat 28 by welding, so that the arc block extends into the arc limit groove, and the arc limit is formed by the arc limit. The armrest frame 25 is connected to the backrest 24 by a locking joint 26, and the locking joint 26 includes two cylinders and a locking toothed disc, wherein the two cylinders fit each other, and the two cylinders are fixed to the backrest 24 and the armrest frame 25 by welding, and a rotating shaft is inserted between the two cylinders, so that the two cylinders can be rotated together, and a locking toothed disc is inserted in the cavity formed by the two cylinders, and the inner walls of the two cylinders are locked. A tooth groove meshing with the locking toothed disc is opened on the upper side, and the locking toothed disc slides in the two cylinders. A through hole is opened on the outer wall of the cylinder located on the outside, and a button is inserted in the through hole. The button passes through the outer wall of the cylinder and abuts against the locking toothed disc. A spring is inserted between the locking toothed disc and the inner wall of the other cylinder. The locking toothed disc is slid by the spring until the locking toothed disc is meshed with the tooth grooves of the two cylinders, thus completing the locking. The locking toothed disc is pressed by the button, and the locking toothed disc moves inward, so that the tooth grooves of the locking toothed disc and the outer cylinder are misaligned and released from the meshing state, thus locking. The locking joint 26 can rotate relatively, and the two ends of the support frame 27 are respectively connected to the armrest frame 25 and the support seat 28 in a hinged manner. Taking the right view as an example, when folding is required, the locking joint 26 is unlocked and the backrest 24 is rotated counterclockwise, so that the backrest 24 is folded close to the seat surface 23. When unfolding, press the button, the locking joint 26 is unlocked, and the backrest 24 is rotated clockwise. When the arc block and the arc limit groove limit the backrest 24 to continue to swing clockwise, stop, and stop pressing the button to complete the unfolding.

[0039] A dining tray 35 is mounted on the armrest frame 25, a second slide groove 36 is opened on the outer side of the armrest frame 25, sliders 37 are installed below both sides of the dining tray 35 by bolt fastening, the sliders 37 extend into the second slide groove 36 for sliding fit, a pull pin 38 is installed on the outer side of the slider 37 (that is, a through hole is opened on the slider 37, the pull pin 38 is inserted into the through hole, a spring is fixed between the pull pin 38 and the slider 37 by welding, and the spring moves the pull pin 38 inward), A limiting hole 39 for the pull pin 38 to extend into is formed in the groove 36, and the end of the pull pin 38 facing the limiting hole 39 is an inclined surface; during assembly, the slider 37 is aligned with the second slide groove 36, and the dining tray 35 is moved to the right at the same time. When the pull pin 38 is aligned with the limiting hole 39, the pull pin 38 is inserted into the limiting hole 39, thereby achieving locking. When the dining tray 35 needs to be disassembled, the pull pin 38 is pulled outward, so that the pull pin 38 is separated from the limiting hole 39, and then the dining tray 35 is moved to the left to be separated.

[0040] An arc groove 29 is provided at the bottom of the support seat 28 and is fitted with the outer wall of the fixed seat 3. When the seat 22 is assembled with the joint seat 2, the arc groove 29 is fitted with the circumferential outer wall of the rotating seat 4. A slot 30 is provided at the top of the rotating seat 4. A pin 31 inserted into the slot 30 is fixed by bolts in the arc groove 29 of the support seat 28. A translational elastic pin 32 is installed at the bottom of the support seat 28. A guide groove is provided in the support seat 28 for the elastic pin 32 to translate left and right. The elastic pin 32 is inserted into the guide groove for translation left and right. A spring is welded between the elastic pin 32 and the inner wall of the guide groove. The spring is used to The elastic pin 32 is pushed outward, and a hook 33 with an inclined bottom is installed at the bottom of the elastic pin 32. The hook 33 is installed on the outer side of the elastic pin 32 by welding. A notch 34 for the elastic pin 32 to extend into is opened on the inner side of the rotating seat 4, and a limiting groove is opened at the bottom of the notch 34 and the limiting groove is inserted into the hook 33. This prevents the support seat 28 from moving up and down, and completes the locking of the support seat 28 and the rotating seat 4. The top of the elastic pin 32 extends outward and extends out of the support seat 28. When the support seat 28 and the rotating seat 4 need to be unlocked, the elastic pin 32 is pressed to move inward, so that the hook 33 exits the notch 34 and the end is completed.

[0041] A pedal 40 is installed on the front support leg 5 by bolt fastening, and the front support leg 5 and the rear support leg are inclined outward (inclined on the left and right sides), and each support leg is spliced ​​by two support rods 41 by inserting, and the support rods 41 are spliced ​​by a mortise and tenon structure, and the splicing point of the two support rods 41 is locked by an elastic protrusion 42, and a hole is opened on the outer wall of the male tenon of the support rod 41, and an elastic protrusion 42 is embedded in the hole, and a spring is embedded between the elastic protrusion 42 and the hole of the male tenon, and the spring pushes the elastic protrusion 42 outward, and a hole for the elastic protrusion 42 to be absorbed is opened on the outer wall of the female tenon of the other support rod 41, so that the position after splicing is limited, and the splicing point of every two support rods 41 is an inclined plane. When the front support leg 5 and the rear support leg are unfolded, the ground of the front support leg 5 and the rear support leg is a horizontal plane, and the assembly surface through the two support rods 41 is also a horizontal plane.

Claims

1. A linkage folding high chair for infants and young children, comprising a support mechanism and a seat, wherein the seat is installed on the top of the support mechanism by means of rotational cooperation, the support mechanism comprises a joint seat, a front support leg, a rear support foot and a linkage lifting assembly, wherein there are two joint seats and the two joint seats are arranged opposite to each other, the front support foot and the rear support foot are installed on the two joint seats by means of rotational connection, and the two rear support feet and the front support foot are fixed by connecting rods; It is characterized in that The front supporting legs and the rear supporting legs are both connected to the linkage lifting assembly, and the front supporting legs and the rear supporting legs are folded and unfolded to realize the lifting of the linkage lifting assembly; The seat is installed on the joint seat, a locking module is arranged on the joint seat, and a linkage module is arranged between the joint seat and the linkage lifting component. When the linkage lifting component rises, the rotation of the joint seat is realized through the linkage module.

2. The linked folding high chair for infants and young children according to claim 1, characterized in that: The joint seat includes a fixed seat and a rotating seat, the rotating seat is rotatably connected to the fixed seat, and the seat is installed on the rotating seat; the linkage module includes a sliding component and a first sliding groove, and the sliding component passing through the fixed seat is installed on the linkage lifting component, and a waist-shaped hole for the sliding component to pass through is opened on the fixed seat, and a first sliding groove extending from the inner layer to the outer periphery is opened on the rotating seat, and the sliding component extends into the first sliding groove.

3. The linked folding high chair for infants and young children according to claim 2, characterized in that: The linkage lifting assembly includes a lifting block and a hinge plate. The lifting block is located between the front supporting legs and the rear supporting legs. The lifting block is hinged to the front supporting legs and the rear supporting legs through the hinge plate, wherein the hinge point between the hinge plate and the lifting block is higher than the hinge point between the hinge plate and the front supporting legs and the rear supporting legs.

4. The linked folding high chair for infants and young children according to claim 3, characterized in that: The locking assembly includes a mounting tube, a push-to-unlock module and a locking pin. The mounting tube is installed between the two rotating seats, the push-to-unlock module is installed in the mounting tube, the locking pin is arranged in the mounting tube and is connected to the push-to-unlock module, a pin hole arranged opposite to the locking pin is opened on the fixed seat, and the locking pin passes through the rotating seat and extends into the pin hole.

5. The linked folding high chair for infants and young children according to claim 4, characterized in that: The push-to-unlock module includes a push block, a sliding rod and an unlocking inclined surface. A through hole is opened in the mounting tube, and a push block is embedded in the through hole. Sliding rods that translate in the mounting tube are clamped in the mounting tubes on both sides of the push block. Springs that move the sliding rod outward are installed in the sliding rod and the mounting tube. An unlocking inclined surface is installed on the inner side of the sliding rod, and the outer side of the sliding rod is fixed to a locking pin. A V-shaped groove is provided on the side of the push block that extends into the mounting tube, and the inner side of the V-shaped groove is in contact with the outer side surfaces of the unlocking inclined surfaces of the two sliding rods.

6. A linked folding high chair for infants and young children according to claim 1 or 5, characterized in that: Support seats are installed on both sides of the bottom of the seat. The support seats are detachably connected to the rotating seat, and the bottom surfaces of the two support seats are flush, so the seat can be disassembled and used separately.

7. The linked folding high chair for infants and young children according to claim 6, characterized in that: The chair includes a seat, a backrest, an armrest frame and a support frame. Both sides of the seat are installed on the inner side of the support seat. The backrest is rotatably connected to the support seat. The armrest frame is rotatably connected to the backrest through a locking joint. Both ends of the support frame are rotatably connected to the armrest frame and the support seat respectively.

8. The linked folding high chair for infants and young children according to claim 7, characterized in that: A dining tray is installed on the armrest, a second slide groove is opened on the outer side of the armrest, sliders are installed below both sides of the dining tray, the sliders extend into the second slide groove for sliding cooperation, a pull pin is installed on the outer side of the slider, and a limiting hole for the pull pin to extend into is opened in the second slide groove.

9. The linked folding high chair for infants and young children according to claim 8, characterized in that: The support seat is provided with an arc groove which fits with the outer wall of the rotating seat, a slot is provided at the top of the rotating seat, a pin inserted into the slot is installed in the arc groove of the support, a translational elastic pin is installed at the bottom of the support seat, a hook with an inclined bottom is installed at the bottom of the elastic pin, a notch for the elastic pin to extend into is provided on the inner side surface of the rotating seat, a limiting slot is provided at the bottom of the notch and the limiting slot is for the hook to extend into, and the top of the elastic pin extends outward and extends out of the support seat.

10. The linked folding high chair for infants and young children according to claim 9, characterized in that: A pedal is installed on the front supporting leg. The front supporting leg and the rear supporting leg are inclined outward. The front supporting leg and the rear supporting leg are spliced ​​by multiple supporting rods. The joint of the two supporting rods is locked by an elastic protrusion, and the joint of every two supporting rods is an inclined surface.

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