CN218922186U - Child seat - Google Patents

Abstract

The utility model discloses a child seat, which comprises a mounting seat capable of being connected to a child frame, wherein the mounting seat is connected with a seat assembly, the seat assembly comprises a backrest part rotationally connected to the mounting seat, the mounting seat is also connected with a handrail assembly, a seat part capable of rotating relative to the handrail assembly and the backrest part is also arranged between the handrail assembly and the backrest part, a first locking structure capable of locking the two parts is arranged between the backrest part and the mounting seat, a second locking structure capable of locking the three parts is arranged between the mounting seat, the seat part and the handrail assembly, and an unlocking part capable of driving the second locking structure to unlock when the seat part rotates and folds relative to the mounting seat so that the seat part and the handrail assembly rotate relative to the mounting seat and are mutually close to the backrest part. The utility model aims to overcome the defects of the prior art and provide the child seat with a simple folding structure and convenient folding operation.

Description

Child seat

[ field of technology ]

The present utility model relates to a child seat.

[ background Art ]

In the prior art, child seats include a seat plate portion that supports the buttocks, an armrest assembly for grasping by both hands of the child, and a backrest portion that supports the back. Wherein, in order to keep the state (unfolding state and folding state) of each part of the seat, a plurality of corresponding locking mechanisms are arranged among the seat plate part, the armrest assembly and the backrest part, the armrest assembly and the backrest part are required to be respectively unlocked and then respectively operated to fold when folding, so that the infant is inconvenient, and a person possibly holds the infant with one hand, so that the folding operation is more difficult.

The present utility model has been developed in response to the above-described drawbacks.

[ utility model ]

The utility model aims to overcome the defects of the prior art and provide the child seat with a simple folding structure and convenient folding operation.

The utility model is realized by the following technical scheme:

the utility model provides a children's seat, includes mount pad 1 that can be connected to children's frame, mount pad 1 on be connected with seat subassembly 2, seat subassembly 2 including rotating the back 21 of connecting on mount pad 1, mount pad 1 on still be connected with handrail subassembly 22, handrail subassembly 22 and back portion 21 between still be equipped with the seat portion 23 that can rotate relative two, back portion 21 and mount pad 1 between be equipped with the first locking structure 3 that can lock the two, mount pad 1, seat portion 23 and handrail subassembly 22 between be equipped with the second locking structure 4 that can lock the three, just back portion 21 on still be equipped with and can order about the unlocking portion 211 of second locking structure 4 unblock when seat portion 23 rotates folding relative mount pad 1 so that seat portion 23 and handrail subassembly 22 rotate and draw close each other with back portion 21 relative mount pad 1.

A plurality of included angle gears are arranged between the backrest part 21 and the seat part 23.

The included angle gear comprises an initial gear and at least one inclined gear with an angle larger than the initial gear, when the seat part 23 is in the inclined gear, the second locking structure 4 locks the mounting seat 1, the seat part 23 and the armrest assembly 22 simultaneously, and when the seat part 23 is in the initial gear, the second locking structure 4 locks the armrest assembly 22 and the seat part 23 and enables the seat part 23 to be unlocked from the mounting seat 1.

The second locking structure 4 comprises a first locking piece 41 movably connected between the seat part 23 and the armrest assembly 22 and simultaneously locked with the seat part 22, a first sliding piece 42 capable of sliding relatively to the installation seat 1, the backrest part 21 and the seat part 23 to push the first locking piece 41 to slide and separate from the seat part 23 is arranged between the first locking piece 42 and the installation seat 1, a locking part 43 capable of enabling the first locking piece 41 to be locked and fixed is also arranged between the first sliding piece 42 and the installation seat 1, a first driving part 44 capable of driving the first sliding piece 42 to slide and separate from the installation seat 1 when the seat part 23 is folded by initial gear upwards is arranged on the first sliding piece 42, a second driving part 45 capable of being pushed by the unlocking part 211 to enable the first sliding piece 42 to slide further is also arranged on the first sliding piece 42, a first elastic piece 46 capable of enabling the first locking piece 41 to reset is arranged between the first sliding piece 42 and the armrest assembly 22, and a second elastic piece 47 capable of enabling the first sliding piece 42 to reset is arranged between the first sliding piece 42 and the armrest assembly 22.

The first sliding member 42 includes a body 421, the body 421 is provided with a plurality of protrusions 422 extending outwards along a circumferential direction, and the seat portion 23 is provided with a clamping groove 231 capable of accommodating the body 421 and the protrusions 422 to slide.

The locking component 43 includes a second protrusion 431 disposed on the mounting base 1 and a second groove 432 disposed on the body 421 and into which the second protrusion 431 can be locked.

The first driving component 44 includes a slant 441 disposed at the top of the relief groove 4211 and capable of being pushed by the second protrusion 431 when the seat portion 23 rotates upward.

The unlocking part 211 is a first protruding block which is arranged on the backrest part 21 and protrudes inwards, the second driving part 45 comprises a first step 451, a second step 452 and a third step 453 which are arranged on the body 421 and are mutually connected, when the first protruding block and the first step 451 are mutually propped against each other, the mounting seat 1, the seat part 23 and the armrest assembly 22 are simultaneously locked, when the first protruding block and the second step 452 are mutually propped against each other, the armrest assembly 22 and the seat part 23 are locked, and when the inclined plane 441 and the edge 4311 of the second protruding block 431 are mutually propped against each other, when the first protruding block and the third step 453 are mutually propped against each other, the body 421 can be pushed and slid by the first protruding block so that the first locking part 41 is separated from the seat part 23.

The first sliding member 42 is a spline, a first cavity 200 is defined between the seat portion 23 and the armrest assembly 22, in which the first sliding member 42 can slide, a first spline groove 232 is formed in the seat portion 23, a second spline groove 221 is formed in the armrest assembly 22, and the first sliding member 42 is simultaneously engaged and fixed with the first spline groove 232 and the second spline groove 221 through the first elastic member 46.

The armrest assembly 22 comprises an armrest seat 222 rotatably connected to the seat portion 23, the armrest seat 222 is connected with a laterally extending armrest rod 223, the seat portion 23 is provided with an outwardly protruding protrusion 233, the armrest seat 222 is provided with a limit chute 224 for accommodating the protrusion 233 to slide therein, the limit chute 224 is provided with a first propping surface 2241 and a second propping surface 2242, when the protrusion 233 and the first propping surface 2241 prop against each other, the armrest assembly 22 is driven by the seat portion 23 to rotate and close to the backrest portion 21, and when the protrusion 233 and the second propping surface 2242 prop against each other, the armrest assembly 22 is driven by the seat portion 23 to rotate and spread, and the armrest seat 222 is further provided with a connecting shaft 2211 outwardly extending and extending into the seat portion 23, the backrest portion 21, the first latch 41 and the first slider 42.

Compared with the prior art, the utility model has the following advantages:

1. when the child seat needs to be folded, the seat part is lifted upwards, the seat part rotates relative to the armrest assembly and the backrest part, the unlocking part 2 on the backrest part can drive the second locking structure to unlock when the seat part rotates upwards, the seat part and the armrest assembly are unlocked, the seat part and the armrest assembly can rotate upwards and fold towards the backrest part, when the seat part, the armrest assembly and the backrest part are mutually folded, the whole child seat is folded, the whole folding process is very simple, the folding of the whole child seat can be completed only by rotating the seat part upwards, the child seat is very convenient, and a child can be folded by one hand even holding the child.

2. When the backrest part rotates backwards from the initial gear to the inclined gear relative to the mounting seat 1, the clamping part can slide relative to the seat part to enable the first sliding part to be clamped and fixed with the mounting seat, at the moment, the first sliding part locks the mounting seat and the seat part, the first clamping part locks the seat part and the armrest assembly, and the mounting seat, the seat part and the armrest assembly are locked simultaneously, so that the backrest is safer.

3. When the seat part rotates upwards, the first driving part and the second driving part are matched to enable the first sliding part to reversely slide relative to the seat part, the first sliding part is separated from the mounting seat, the first sliding part also ejects the first locking part from the seat part to enable the first locking part to be separated from the seat part, and at the moment, the seat part and the armrest assembly can rotate upwards to be folded close to the backrest part.

[ description of the drawings ]

FIG. 1 is a perspective view of a child seat of the present utility model;

FIG. 2 is one of the exploded views of the child seat of the present utility model;

FIG. 3 is a second exploded view of the child seat of the present utility model;

FIG. 4 is a perspective view of a mount in the child seat of the present utility model;

FIG. 5 is a perspective view of a first slider in the child seat of the present utility model;

FIG. 6 is a perspective view of an armrest seat in the child seat of the present utility model;

FIG. 7 is one of the perspective views of the seat portion of the child seat of the present utility model;

FIG. 8 is a second perspective view of the seat portion of the child seat of the present utility model;

FIG. 9 is one of the perspective views of the seat portion, the first locking member and the first slider member of the child seat of the present utility model;

FIG. 10 is a second perspective view of the seat portion, the first locking member and the first slider member of the child seat of the present utility model;

fig. 11 is an exploded view of a first locking arrangement in the child seat of the present utility model.

[ detailed description ] of the utility model

The utility model is further described below with reference to the accompanying drawings:

as shown in fig. 1 to 11, the present utility model provides a child seat, which comprises a mounting seat 1 capable of being connected to a child car frame, wherein the mounting seat 1 is connected with a seat assembly 2, the seat assembly 2 comprises a backrest 21 rotatably connected to the mounting seat 1, the mounting seat 1 is also connected with a armrest assembly 22, a seat part 23 capable of rotating relative to the armrest assembly 22 and the backrest 21 is further arranged between the backrest 21 and the mounting seat 1, a first locking structure 3 capable of locking the seat part and the backrest 21 is arranged between the mounting seat 1, a second locking structure 4 capable of locking the seat part, the seat part 23 and the armrest assembly 22 is arranged between the mounting seat 1 and the backrest 21, and an unlocking part 211 capable of unlocking the second locking structure 4 when the seat part 23 is rotated and folded relative to the mounting seat 1 is further arranged on the backrest 21 so as to drive the seat part 23 and the armrest assembly 22 to rotate relative to the mounting seat 1 and to be mutually close to the backrest 21.

When the child seat of the present utility model needs to be folded, the seat part 23 is lifted upwards, at this time, the seat part 23 rotates relative to the armrest assembly 22 and the backrest part 21, when the seat part 23 rotates upwards, the unlocking part 211 on the backrest part 21 can drive the second locking structure 4 to unlock, at this time, the seat part 23 and the armrest assembly 22 unlock, the seat part 23 and the armrest assembly 22 can rotate upwards to fold towards the backrest part 21, when the seat part 23, the armrest assembly 22 and the backrest part 21 draw towards each other, the whole child seat is folded, and only the seat part 23 is rotated upwards to complete the folding of the whole child seat, which is very convenient, and even if a child is held by a person, the folding of the child seat can be completed by one hand.

As shown in fig. 3 to 4, a plurality of included angle gears are provided between the backrest part 21 and the seat part 23. When the first locking structure 3 is unlocked, the backrest part 21 can rotate relative to the mounting seat 1 to adjust the included angle gear between the backrest part and the seat part 23.

As shown in fig. 3 to 4, the included angle gear includes an initial gear and at least one inclined gear with an angle greater than the initial gear, the second locking structure 4 locks the mounting seat 1, the seat 23 and the armrest assembly 22 simultaneously when the seat 23 is in the inclined gear, and the second locking structure 4 locks the armrest assembly 22 and the seat 23 and unlocks the seat 23 and the mounting seat 1 when the seat 23 is in the initial gear. The back rest 21 is in a vertical state or is inclined rearward and nearly vertical state when the back rest 21 and the seat portion 23 are in the initial gear. The angle at which the back rest 21 is reclined when the back rest 21 and the seat portion 23 are in the reclined position is greater than the angle between the back rest 21 and the seat portion 23 in the initial position. The seat portion 23 is rotatable relative to the back portion 21 and the armrest assembly 22 to rotate toward the back portion 21 when the back portion 21 is in the initial gear position.

As shown in fig. 2 to 3, the second locking structure 4 includes a first latch 41 movably connected between the seat portion 23 and the armrest assembly 22 and simultaneously engaged with the two, a first sliding member 42 capable of sliding relative to the first latch 41 to push the first latch 41 to slide and separate from the seat portion 23 is provided between the mounting seat 1, the first sliding member 42 and the mounting seat 1 are further provided with an engaging member 43 capable of fixing the two in an engaging manner, the first sliding member 42 is provided with a first driving member 44 capable of driving the first sliding member 42 to slide and separate from the mounting seat 1 when the seat portion 23 is folded by the initial gear upward rotation, the first sliding member 42 is further provided with a second driving member 45 capable of being pushed by the unlocking portion 211 to further slide the first sliding member 42, a first elastic member 46 capable of resetting the first latch 41 is provided between the first latch 41 and the armrest assembly 22, and the first sliding member 42 is provided with a second elastic member 47 capable of resetting the first sliding member 42. When the backrest 21 rotates from the initial gear to the inclined gear relative to the mounting seat 1, the clamping component 43 can slide relative to the seat part 23 to ensure that the first sliding piece 42 is clamped and fixed with the mounting seat 1, at this time, the first sliding piece 42 locks the mounting seat 1 and the seat part 23, the first locking piece 41 locks the seat part 23 and the armrest assembly 22, and the mounting seat 1, the seat part 23 and the armrest assembly 22 are simultaneously locked, so that the safety is improved. When the seat portion 23 is rotated upwardly, the first drive member 44 and the second drive member 45 cooperate to cause the first slider 42 to slide in a reverse direction relative to the seat portion 23, the first slider 42 is separated from the mounting base 1, and the first slider 42 also ejects the first latch 41 from the seat portion 23 to disengage the first latch 41 from the seat portion 23, at which time the seat portion 23 and the armrest assembly 22 can be rotated upwardly to fold against the backrest portion 21.

As shown in fig. 2 and 5, the first sliding member 42 includes a main body 421, a plurality of protrusions 422 extending outwards are disposed on the main body 421 along a circumferential direction, and a clamping groove 231 capable of accommodating the main body 421 and the protrusions 422 to slide is disposed on the seat portion 23. The protrusion 422 of the body 421 is engaged in the engagement groove 231, so that the entire first slider 42 rotates along with the rotating seat portion 23 when the seat portion 23 rotates. When the body 421 is pressed, the first locking member 41 can be pushed to slide laterally by sliding laterally in the locking groove 231.

As shown in fig. 5, the body 421 is further provided with a boss 423 that can be locked into the first locking member 41, and the boss 423 can make the connection between the body 421 and the first locking member 41 tighter.

As shown in fig. 4 to 5, the engaging member 43 includes a second protrusion 431 disposed on the mounting base 1 and a second groove 432 disposed on the body 421 and into which the second protrusion 431 can be engaged. The second protrusion 431 and the second groove 432 are engaged with each other to fix the mounting seat 1 and the body 421, so that the gear adjustment of the backrest 21 is safer.

As shown in fig. 4 to 5, the first driving part 44 includes a slant surface 441 disposed at the top of the relief groove 4211 and capable of being pushed by the second protrusion 431 when the seat portion 23 rotates upward. The inclined surface 441 can be engaged with the second protrusion 431 to move the body 421 when the seat portion 23 is rotated upward, and the inclined surface 441 can be provided to avoid the first slider 42 from being jammed when the seat portion 23 is rotated upward.

As shown in fig. 4 to 5, the unlocking portion 211 is a first protrusion protruding inward and provided on the backrest portion 21, the second driving member 45 includes a first step 451, a second step 452, and a third step 453 provided on the body 421 and connected to each other, when the first protrusion and the first step 451 are abutted against each other, the mounting seat 1, the seat portion 23, and the armrest assembly 22 are simultaneously locked, when the first protrusion and the second step 452 are abutted against each other, the armrest assembly 22 is locked with the seat portion 23, and the inclined surface 441 and the edge 4311 of the second protrusion 431 are abutted against each other, when the first protrusion and the third step 453 are abutted against each other, the body 421 can be pushed and slid by the first protrusion, so that the first latch 41 is separated from the seat portion 23. The first step 451, the second step 452 and the third step 453 are all disposed on the peripheral side of the body 421 and arranged in a stepped manner, the third step 453 is close to the front side 4210 of the body 421, the second step 452 is disposed rearward relative to the third step 453, and the first step 451 is disposed rearward relative to the second step 452 and furthest from the front side 4210.

When the backrest 21 rotates from the initial gear to the inclined gear relative to the mounting seat 1, the first protruding block follows the backrest 21 to rotate, at this time, the first protruding block moves from the second step 452 to the first step 451 and abuts against the first step 451, and since the first step 451 is located at the rear side of the second step 452, the second elastic member 47 pushes the body 421 to move forward for a certain distance, so that the second groove 432 on the body 421 and the second protruding block 431 on the mounting seat 1 are engaged with each other, at this time, the body 421 locks the mounting seat 1 and the seat portion 23, the first latch member 41 locks the seat portion 23 and the armrest assembly 22, and the mounting seat 1, the seat portion 23 and the armrest assembly 22 are simultaneously locked.

When the backrest 21 rotates forward from the inclined gear to the initial gear relative to the mounting seat 1, the first bump follows the backrest 21 to rotate, and at this time, the first bump moves from the first step 451 to the second step 452 and abuts against the second step 452, and since the second step 452 is located at the front side of the first step 451, the first bump pushes the body 421 to move backward for a certain distance, the second elastic member 47 is compressed when the body 421 moves, and the second groove 432 on the body 421 slides backward, so that the inclined surface 441 on the body 421 abuts against the edge 4311 of the second bump 431.

When the seat portion 23 is folded by rotating upwards, the inclined surface 441 on the body 421 and the edge 4311 of the second protrusion 431 are propped against each other, the body 421 is propped against and moves backwards for a distance, at this time, the top surface of the body 421 gradually butts against the top surface of the second protrusion 431, and the body 421 moves along with the seat portion 23 to enable the first protrusion to move from the second step 452 to the third step 453, the third step 453 is located at the front side of the second step 452, the body 421 further moves backwards to gradually prop against the first locking member 41 and enable the first locking member 41 to separate from the seat portion 23 and enter the armrest assembly 22, at this time, the seat portion 23 and the armrest assembly 22 can rotate upwards to fold close to the backrest portion 21.

As shown in fig. 2 to 3, the first slider 42 is a spline, a first cavity 200 in which the first slider 42 can slide is enclosed between the seat portion 23 and the armrest assembly 22, a first spline groove 232 is provided on the seat portion 23, a second spline groove 221 is provided on the armrest assembly 22, and the first slider 42 is simultaneously engaged and fixed with the first spline groove 232 and the second spline groove 221 by the first elastic member 46. The armrest assembly 22 and the seat portion 23 are rotatably folded when the first slider 42 is disengaged from the first spline groove 232 on the seat portion 23 and fully received within the second spline groove 221.

As shown in fig. 2 to 3, the armrest assembly 22 includes an armrest seat 222 rotatably connected to the seat portion 23, the armrest seat 222 is connected to a laterally extending armrest rod 223, the seat portion 23 is provided with an outwardly protruding protrusion 233, the armrest seat 222 is provided with a limit chute 224 for accommodating the protrusion 233 and sliding therein, the limit chute 224 is provided with a first abutment surface 2241 and a second abutment surface 2242, when the protrusion 233 and the first abutment surface 2241 abut against each other, the armrest assembly 22 is driven by the seat portion 23 to rotate toward the backrest portion 21, and when the protrusion 233 and the second abutment surface 2242 abut against each other, the armrest assembly 22 is driven by the seat portion 23 to rotate and expand, and the armrest seat 222 is further provided with a connecting shaft 2211 extending outwardly and extending into the seat portion 23, the backrest portion 21, the first latch 41 and the first slider 42. The connecting shaft 2211 extends into the seat part 23, the backrest part 21, the first locking element 41 and the first sliding element 42 and is rotatably connected to the mounting base 1. The limiting chute 224 is used for limiting the sliding range of the protruding portion 233, when the seat portion 23 is folded up in a rotating manner, the protruding portion 233 on the seat portion 23 gradually approaches and abuts against the first abutting surface 2241, at this time, the protruding portion 233 can push the armrest assembly 22 to fold along with the movement, and when the seat portion 23 is unfolded in a rotating manner, the protruding portion 233 on the seat portion 23 gradually approaches and abuts against the second abutting surface 2242, at this time, the protruding portion 233 can drive the armrest assembly 22 to unfold along with the movement.

As shown in fig. 4 and 11, the first locking structure 3 includes a first locking position 31 disposed on the mounting seat 1 and along a circumferential direction of the mounting seat 1 and corresponding to an initial gear, the mounting seat 1 is further provided with a second locking position 32 and a third locking position 33 corresponding to an inclined gear, the backrest 21 is provided with a first locking member 34 capable of sliding relative to the first locking position 31, the second locking position 32 or the third locking position 33 to be respectively locked or unlocked, the backrest 21 is further provided with an operating member 35, a cable 36 capable of driving the first locking member 34 to be disengaged from the first locking position 31, the second locking position 32 or the third locking position 33 when the operating member 35 is operated is disposed between the first locking member 34 and the operating member 35, and a first elastic element 37 capable of enabling the first locking member 34 to be kept locked in the first locking position 31, the second locking position 32 or the third locking position 33 is disposed between the first locking member 34 and the backrest 21. When the gear of the included angle of the backrest 21 relative to the seat 23 needs to be adjusted, the operation member 35 is operated, the pull rope 36 is pulled after the operation member 35 is operated, the pull rope 36 moves upwards and pulls the first locking member 34 to be separated from the first locking position 31, the backrest 21 and the mounting seat 1 are unlocked, the backrest 21 rotates backwards to correspond to the second locking position 32 or the third locking position 33, the operation member 35 is released, and the first elastic element 37 pushes the first locking member 34 to reset, so that the first locking member 34 is clamped into the second locking position 32 or the third locking position 33 again to lock the backrest 21 and the mounting seat 1 again.

Claims (10)

1. A child seat, characterized in that: including mount pad (1) that can be connected to on the children's carriage, mount pad (1) on be connected with seat subassembly (2), seat subassembly (2) including rotating back portion (21) of being connected on mount pad (1), mount pad (1) on still be connected with handrail subassembly (22), handrail subassembly (22) and back portion (21) between still be equipped with can relative two pivoted seat portion (23), back portion (21) and mount pad (1) between be equipped with first locking structure (3) that can lock the two, mount pad (1), seat portion (23) and handrail subassembly (22) between be equipped with second locking structure (4) that can lock the three, and back portion (21) on still be equipped with and order about second locking structure (4) unblock and make seat portion (23) and subassembly (22) rotate relative mount pad (1) and with the unblock portion (211) of mutual side of back portion (21) when seat portion (23) rotates the folding.

2. The child seat according to claim 1, wherein: a plurality of included angle gears are arranged between the backrest part (21) and the seat part (23).

3. The child seat according to claim 2, wherein: the included angle gear comprises an initial gear and at least one inclined gear with an angle larger than the initial gear, when the seat part (23) is in the inclined gear, the second locking structure (4) locks the mounting seat (1), the seat part (23) and the armrest assembly (22) simultaneously, and when the seat part (23) is in the initial gear, the second locking structure (4) locks the armrest assembly (22) and the seat part (23) and enables the seat part (23) to be unlocked from the mounting seat (1).

4. A child seat according to claim 3, wherein: the second locking structure (4) comprises a first clamping and locking part (41) movably connected between the seat part (23) and the armrest assembly (22) and clamped with the seat part (22) at the same time, a first driving part (44) capable of sliding relatively to the mounting seat (1), the backrest part (21) and the seat part (23) to push the first clamping and locking part (41) to slide and separate from the seat part (23) is arranged between the first sliding part (42) and the mounting seat (1), a clamping and locking part (43) capable of enabling the first sliding part (42) to be clamped and fixed is further arranged between the first sliding part (42) and the mounting seat (1), a first driving part (44) capable of driving the first sliding part (42) to slide and separate from the mounting seat (1) when the seat part (23) is folded by initial gear upwards is arranged on the first sliding part (42), a second driving part (45) capable of being further slid by the first sliding part (211) and enabling the first sliding part (42) to slide is further arranged between the first clamping and the armrest assembly (22), and the first sliding part (42) is enabled to be reset by the elastic part (46).

5. The child seat according to claim 4, wherein: the first sliding piece (42) comprises a body (421), a plurality of protrusions (422) extending outwards are arranged on the body (421) along the circumferential direction, and clamping grooves (231) capable of containing the body (421) and the protrusions (422) to slide are formed in the seat part (23).

6. The child seat according to claim 5, wherein: the clamping component (43) comprises a second lug (431) arranged on the mounting seat (1) and a second groove (432) which is arranged on the body (421) and can be used for clamping the second lug (431).

7. The child seat according to claim 6, wherein: the first driving part (44) comprises an inclined surface (441) which is arranged at the top of the yielding groove (4211) and can be matched and pushed with the second lug (431) when the seat part (23) rotates upwards.

8. The child seat according to claim 7, wherein: the unlocking part (211) is a first protruding block which is arranged on the backrest part (21) and protrudes inwards, the second driving part (45) comprises a first step (451), a second step (452) and a third step (453) which are arranged on the body (421) and are mutually connected, when the first protruding block and the first step (451) are mutually propped against each other, the mounting seat (1), the seat part (23) and the armrest assembly (22) are simultaneously locked, when the first protruding block and the second step (452) are mutually propped against each other, the armrest assembly (22) is locked with the seat part (23), the inclined plane (441) and the edge (4311) of the second protruding block (431) are mutually propped against each other, and when the first protruding block and the third step (453) are mutually propped against each other, the body (421) can be slid by the first protruding block so that the first locking piece (41) is separated from the seat part (23).

9. The child seat according to claim 4, wherein: the first sliding part (42) is a spline, a first cavity (200) which can be used for the first sliding part (42) to slide in is surrounded between the seat part (23) and the armrest assembly (22), a first spline groove (232) is formed in the seat part (23), a second spline groove (221) is formed in the armrest assembly (22), and the first sliding part (42) is clamped and fixed with the first spline groove (232) and the second spline groove (221) through the first elastic part (46).

10. The child seat according to claim 4, wherein: the armrest assembly (22) comprises an armrest seat (222) which can be rotationally connected to the seat part (23), an armrest rod (223) which transversely extends is connected to the armrest seat (222), the seat part (23) is provided with a convex part (233) which protrudes outwards, the armrest seat (222) is provided with a limit chute (224) which accommodates the convex part (233) and slides inwards, the limit chute (224) is provided with a first propping surface (2241) and a second propping surface (2242), when the convex part (233) and the first propping surface (2241) prop against each other, the armrest assembly (22) is driven by the seat part (23) to rotate towards the backrest part (21), and when the convex part (233) and the second propping surface (2242) prop against each other, the armrest assembly (22) is driven by the seat part (23) to rotate and expand, and the armrest seat (222) is also provided with a first propping surface (2241) which extends outwards and stretches into the seat part (23), the backrest part (21), the first latch (21) and the first latch (2211) and the first shaft (42) to slide inwards.

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