CN216734442U

CN216734442U - Baby carriage seat capable of being linked and folded and baby carriage

Info

Publication number: CN216734442U
Application number: CN202122128208.XU
Authority: CN
Inventors: 邓明亮; 徐军勇
Original assignee: Guangdong Roadmate Group Co Ltd
Current assignee: Guangdong Roadmate Group Co Ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-06-14
Anticipated expiration: 2031-09-03

Abstract

The utility model belongs to the technical field of a baby carriage, in particular to a baby carriage seat and a baby carriage which can be linked and folded, and the baby carriage comprises a seat frame group, a seat dismounting component and a backrest group which are respectively hinged with the seat frame group, a backrest locking component for limiting the rotation of the backrest group relative to the seat frame group, a backrest unlocking device capable of unlocking the backrest locking component, a seat frame locking component for limiting the rotation of the seat frame group relative to the seat dismounting component, and a seat frame unlocking device capable of unlocking the seat frame locking component, wherein when the baby carriage is folded, the backrest group can rotate towards the seat frame group to be folded, and when the backrest group rotates relative to the seat frame group, the seat frame unlocking device can be driven to unlock the seat frame locking component, so that the seat frame group can rotate and fold relative to the seat dismounting component, the whole space of the baby carriage is smaller after being folded, the baby carriage is convenient to store, and the seat frame group can be folded together in the process of folding the backrest group, the linked unlocking and folding mode makes the operation simpler.

Description

Baby carriage seat capable of being linked and folded and baby carriage

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of a baby carriage, and particularly relates to a baby carriage seat capable of being folded in a linkage mode and a baby carriage.

[ background of the utility model ]

The baby carriage in the current market is mostly made into a folding type for convenient storage and transportation, but the seat of the existing baby carriage is complex to operate in the folding process, is not enough to be folded, and still occupies a large space after being folded.

[ Utility model ] content

The utility model provides a linkage foldable baby carriage seat and a baby carriage, which are simple and convenient to fold, and have smaller volume after being folded.

The utility model is realized by the following technical scheme:

a linked foldable baby carriage seat comprises a seat frame group, a seat dismounting component and a backrest group which are respectively arranged at two sides of the seat frame group and are hinged with the seat frame group, a backrest locking component used for limiting the rotation of the backrest group relative to the seat frame group is arranged at the hinged part of the seat frame group and the backrest group, a backrest unlocking device capable of unlocking the backrest locking assembly is arranged on the backrest group, a seat frame locking assembly used for limiting the rotation of the seat frame group relative to the seat dismounting assembly is arranged between the seat frame group and the seat dismounting assembly, a seat frame unlocking device capable of unlocking the seat frame locking assembly is arranged between the backrest group and the seat frame group, after the backrest locking assembly is unlocked, the backrest group can rotate and fold towards the seat frame group, and when the backrest group rotates relative to the seat frame group, the seat frame unlocking device can be driven to unlock the seat frame locking assembly, so that the seat frame group can rotate and fold relative to the seat dismounting assembly.

The stroller seat capable of being linked and folded is characterized in that the seat frame group is hinged with the armrests, the armrest locking assemblies for limiting the armrests to rotate relative to the seat frame group are arranged between the seat frame group and the armrests, the armrest unlocking devices capable of unlocking the armrest locking assemblies are arranged between the seat frame group and the backrest group, and when the backrest group rotates towards the seat frame group and is folded, the armrest unlocking devices can be driven to unlock the armrest locking assemblies, so that the armrests can rotate relative to the seat frame group and can be folded.

The baby carriage seat capable of being folded in a linkage manner comprises a backrest group and a backrest frame hinged element arranged at the lower end of the backrest frame, wherein the seat frame group comprises a seat frame and a seat frame hinged element arranged at one end of the seat frame, the seat dismounting assembly comprises a seat clamping joint, two sides of the seat frame hinged element are respectively in rotating fit with the backrest frame hinged element and the seat clamping joint, the backrest locking assembly comprises a backrest clamping and locking piece arranged on the seat frame hinged element and a clamping and locking bolt arranged on the backrest frame and extending into the seat frame hinged element to be matched with the backrest clamping and locking piece, the backrest unlocking device comprises an unlocking button arranged on the backrest frame and capable of pulling the clamping and locking bolt to move and a linkage piece arranged between the unlocking button and the clamping and locking bolt, and the clamping and locking bolt can be pulled to move towards the direction far away from the backrest clamping and locking piece through the unlocking button, the backrest frame can rotate relative to the seat frame by separating from the backrest locking piece.

As above, the seat frame locking assembly comprises a seat frame locking piece, a first clamping groove arranged on the seat frame hinged part and matched with the seat frame locking piece, a second clamping groove arranged on the seat clamping joint and matched with the seat frame locking piece, and a first elastic element arranged between the seat frame locking piece and the seat clamping joint, wherein when the seat frame hinged part is hinged with the seat clamping joint, the seat frame locking piece is arranged between the first clamping groove and the second clamping groove so as to limit the seat frame hinged part to rotate relative to the seat clamping joint.

The seat frame unlocking device comprises a seat frame unlocking sliding piece movably arranged on a seat frame hinged piece, a first unlocking lug arranged on the inner side of a back frame hinged piece, a second unlocking lug arranged on one side, close to the first unlocking lug, of the seat frame unlocking sliding piece and capable of being abutted against the first unlocking lug, a first inclined plane arranged on one side, close to the seat frame hinged piece, of the seat frame unlocking sliding piece, and a second inclined plane arranged on one side, close to the seat frame unlocking sliding piece, of the seat frame locking piece and matched with the first inclined plane, when the back frame rotates towards the direction close to the seat frame, the first unlocking lug pushes the second unlocking lug to enable the seat frame unlocking sliding piece to move downwards, and the first inclined plane and the second inclined plane slide relatively, so that the seat frame locking piece moves towards the direction far away from the first clamping groove and compresses the first elastic element, until the seat frame locking piece is separated from the first clamping groove, the seat frame can rotate relative to the seat dismounting assembly.

The linkage foldable baby carriage seat comprises a seat frame, a seat frame unlocking sliding piece, a seat frame hinge piece, a second unlocking lug, a first elastic element and a second elastic element, wherein the seat frame unlocking sliding piece is movably arranged on the seat frame, the second unlocking lug is a taper top block with two low ends and a high middle part, the second elastic element is arranged between the seat frame hinge piece and the seat frame unlocking sliding piece along the moving direction of the seat frame unlocking sliding piece, the first unlocking lug pushes the second unlocking lug to enable the seat frame unlocking sliding piece to move downwards so as to compress the second elastic element, and when the first unlocking lug is separated from the second unlocking lug, the second elastic element is reset by the elastic compression force of the second elastic element.

The baby carriage seat capable of being linked and folded comprises an armrest locking assembly and a seat frame, wherein the armrest locking assembly comprises armrest locking holes which are arranged on the periphery of an armrest hinge point and are arranged along the radial direction, the armrest is hinged to the seat frame, an armrest locking element is arranged in the seat frame, an armrest clamping pin which extends along the direction close to the armrest locking hole and is matched with the armrest locking hole is arranged on the armrest locking element, and when the armrest is hinged to the seat frame, the armrest clamping pin is inserted into the armrest locking hole to limit the armrest to rotate relative to the seat frame.

The baby carriage seat capable of being linked and folded comprises a seat frame, a seat frame hinged piece, an armrest unlocking device, a seat frame hinge piece and a seat frame hinge pin, wherein the armrest unlocking device comprises a first sliding groove arranged in the seat frame along the length direction of the seat frame, an armrest locking element is movably arranged in the first sliding groove, a third unlocking lug is arranged on the inner side of the backrest frame hinged piece, a fourth unlocking lug capable of being abutted against the third unlocking lug is arranged at one end, close to the seat frame hinged piece, of the armrest locking element, a third elastic element is arranged between one end, far away from the seat frame hinged piece, of the armrest locking element and the first sliding groove, a first sliding long hole is formed in the armrest locking element, a second sliding long hole for allowing the armrest bayonet pin to pass is formed in the position, corresponding to the armrest bayonet pin, of the seat frame, so that the armrest locking element can slide back and forth along the length direction of the seat frame when the armrest bayonet pin passes through the seat frame, an arc unlocking hole is formed in the hinged position along the peripheral side, the arc is separated lockhole and is linked together with handrail lockhole, when the handrail rotates to being close to seat frame orientation, the handrail bayonet lock can be followed the arc and separated lockhole and slided, when the back frame rotates to being close to seat frame orientation, third unblock lug and fourth unblock lug are inconsistent with pushing away handrail locking element and slide and compress third elastic element to keeping away from seat frame articulated elements orientation, make the handrail bayonet lock removes to the arc from handrail lockhole in, can make the relative seat frame of handrail rotate.

As above, the seat assembly and disassembly assembly component further comprises a seat assembly and disassembly button and a seat assembly and disassembly spring, the seat clamping joint is provided with a second chute for movably mounting the seat assembly and disassembly button, the seat assembly and disassembly spring is arranged in the second chute, and two ends of the seat assembly and disassembly button are respectively abutted to the second chute.

A baby carriage comprises a carriage frame and a baby carriage seat which can be linked and folded, wherein the baby carriage seat which can be linked and folded is detachably arranged on the carriage frame.

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

1. the utility model provides a linked foldable baby carriage seat, which comprises a seat frame group, a seat dismounting component and a backrest group, wherein the seat dismounting component and the backrest group are respectively hinged with the seat frame group, a backrest locking component used for limiting the backrest group to rotate relative to the seat frame group is arranged at the hinged part of the seat frame group and the backrest group, a backrest unlocking device capable of unlocking the backrest locking component is arranged on the backrest group, a seat frame locking component used for limiting the seat frame group to rotate relative to the seat dismounting component is arranged between the seat frame group and the seat dismounting component, a seat frame unlocking device capable of unlocking the seat frame locking component is arranged between the backrest group and the seat frame group, when the baby carriage seat is folded, the backrest group can rotate towards the seat frame group to fold, and when the backrest group rotates relative to the seat frame group, the seat frame unlocking device can be driven to unlock the seat frame locking component, so that the seat frame group can rotate relative to the seat dismounting component to fold the baby carriage, the whole space after the baby carriage is folded is smaller, the backrest seat is convenient to store, the seat frame group can be folded together in the process of folding the backrest group, and the linked unlocking and folding mode enables the operation to be simpler.

2. The seat frame group is hinged on the seat frame group, the armrest locking assembly used for limiting the armrest to rotate relative to the seat frame group is arranged between the seat frame group and the armrest, the armrest unlocking device capable of unlocking the armrest locking assembly is arranged between the seat frame group and the backrest group, when the backrest group rotates towards the seat frame group and is folded, the armrest unlocking device can be driven to unlock the armrest locking assembly, the armrest can rotate relative to the seat frame group and can be folded, the seat can be folded and contracted to the maximum extent, in the process of folding the backrest group, the seat frame group and the armrest can be folded together, and the linked unlocking and folding mode enables the operation to be simpler.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

FIG. 1 is a perspective view of the present invention in an expanded state;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is a partial cross-sectional view taken along line A-A of FIG. 1;

FIG. 5 is a partial cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is an exploded view of the seat assembly of the present invention;

FIG. 7 is an exploded view of the seat assembly of the present invention;

figure 8 is an exploded view of the seat assembly and disassembly assembly of the present invention.

[ detailed description ] embodiments

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In a specific embodiment, as shown in fig. 1 to 8, a linked foldable stroller seat includes a seat frame assembly 11, and a seat assembly and disassembly assembly 12 and a backrest assembly 13 respectively disposed at two sides of the seat frame assembly 11 and hinged to the seat frame assembly 11, a backrest locking assembly for limiting rotation of the backrest assembly 13 relative to the seat frame assembly 11 is disposed at a hinge position of the seat frame assembly 11 and the backrest assembly 13, a backrest unlocking device for unlocking the backrest locking assembly is disposed on the backrest assembly 13, a seat frame locking assembly for limiting rotation of the seat frame assembly 11 relative to the seat assembly and disassembly assembly 12 is disposed between the seat frame assembly 11 and the seat assembly 12, a seat frame unlocking device for unlocking the seat frame locking assembly is disposed between the backrest assembly 13 and the seat frame assembly 11, after the backrest locking assembly is unlocked, the backrest assembly 13 can rotate towards the seat frame assembly 11, and when the backrest assembly 13 rotates relative to the seat frame assembly 11, the seat frame unlocking device can be driven to unlock the seat frame locking assembly, so that the seat frame assembly 11 can rotate and fold relative to the seat assembly and disassembly assembly 12. When folding up, the back group can be folded to the seat frame group to rotating, and when the back group rotates relative to the seat frame group, can drive seat frame unlocking device to unlock seat frame locking assembly, makes the seat frame group can rotate relative to seat dismouting subassembly and fold up, not only makes perambulator whole space littleer after folding up, is convenient for deposit, and at the in-process of folding back group, can make seat frame group together fold moreover, and the folding mode of unblock of linkage makes the operation get up simpler.

Specifically, the seat set 11 is hinged with a handrail 14, a handrail locking assembly for limiting the rotation of the handrail 14 relative to the seat set 11 is arranged between the seat set 11 and the handrail 14, a handrail unlocking device capable of unlocking the handrail locking assembly is arranged between the seat set 11 and the backrest set 13, and when the backrest set 13 rotates towards the seat set 11 and is folded, the handrail unlocking device can be driven to unlock the handrail locking assembly, so that the handrail 14 can rotate relative to the seat set 11 and is folded. When the backrest group rotates towards the seat frame group and is folded, the armrest unlocking device can be driven to unlock the armrest locking assembly, so that the armrests can rotate relative to the seat frame group and can be folded, the seat can be folded to the maximum extent, the seat frame group and the armrests can be folded together in the process of folding the backrest group, and the linked unlocking and folding mode enables the operation to be simpler.

In addition, the backrest group 13 includes a backrest frame 131 and a backrest frame hinge 132 disposed at the lower end of the backrest frame 131, the seat frame group 11 includes a seat frame 111 and a seat frame hinge 112 disposed at one end of the seat frame 111, the seat dismounting assembly 12 includes a seat latching joint 121, two sides of the seat frame hinge 112 are respectively rotatably engaged with the backrest frame hinge 132 and the seat latching joint 121, the backrest locking assembly includes a backrest latching member 21 disposed on the seat frame hinge 112 and a latching bolt 22 disposed on the backrest frame 131 and extending into the seat frame hinge 112 to be engaged with the backrest latching member 21, the backrest unlocking device includes an unlocking button 31 disposed on the backrest frame 131 to pull the latching bolt 22 to move and a linkage member disposed between the unlocking button 31 and the latching bolt 22, the latching bolt 22 can be pulled by the unlocking button 31 to move in a direction away from the backrest latching member 21, the backrest frame 131 can be rotated relative to the seat frame 111 by disengaging the backrest locking piece 21. The interlock spare adopts wire rope can in this scheme. In addition, the backrest frame 131 is fixed relative to the seat frame 111 by the engagement of the latch 22 with the backrest latch 21. After the latch 22 is disengaged, the backrest frame 131 can rotate relative to the seat frame 111.

Further, the seat frame locking assembly includes a seat frame locking member 41, a first locking groove 42 disposed on the seat frame hinge member 112 and matched with the seat frame locking member 41, a second locking groove 43 disposed on the seat engagement joint 121 and matched with the seat frame locking member 41, and a first elastic element 44 disposed between the seat frame locking member 41 and the seat engagement joint 121, wherein when the seat frame hinge member 112 is hinged to the seat engagement joint 121, the seat frame locking member 41 is located between the first locking groove 42 and the second locking groove 43 to limit the seat frame hinge member 112 from rotating relative to the seat engagement joint 121.

More specifically, the seat frame unlocking device includes a seat frame unlocking sliding member 51 movably disposed on the seat frame hinge member 112, a first unlocking protrusion 52 disposed on the inner side of the back frame hinge member 132, a second unlocking protrusion 53 disposed on the seat frame unlocking sliding member 51 near the first unlocking protrusion 52 and capable of abutting against the first unlocking protrusion 52, a first inclined surface 54 disposed on the seat frame unlocking sliding member 51 near the seat frame hinge member 112, and a second inclined surface 55 disposed on the seat frame locking member 41 near the seat frame unlocking sliding member 51 and engaged with the first inclined surface 54, the first inclined surface 54 and the second inclined surface 55 form a wedge mechanism, when the back frame 131 rotates toward the seat frame 111, the first unlocking protrusion 52 pushes the second unlocking protrusion 53 to make the seat frame unlocking sliding member 51 move downward, and the first inclined surface 54 slides relative to the second inclined surface 55, so that the seat frame locking member 41 moves away from the first engaging groove 42 and compresses the first elastic element 44 until the seat frame locking member 41 disengages from the first engaging groove 42, and the seat frame 111 can rotate relative to the seat assembly/disassembly assembly 12. More specifically, the second unlocking protrusion 53 is a tapered top block with two low ends and a high middle, a second elastic element 56 is arranged between the seat frame hinge 112 and the seat frame unlocking slider 51 along the moving direction of the seat frame unlocking slider 51, the first unlocking protrusion 52 pushes the second unlocking protrusion 53 to compress the second elastic element 56 when the seat frame unlocking slider 51 moves downwards, and the first unlocking protrusion 52 is reset by the elastic compression force of the second elastic element 56 after being separated from the second unlocking protrusion 53, preferably, the first elastic element 44 and the second elastic element 56 are compression springs.

This scheme adopts the linkage unblock, and its detailed unblock process does: when the backrest frame 131 rotates toward the seat frame 111, the first unlocking protrusion 52 pushes the second unlocking protrusion 53 to move the seat frame unlocking slider 51 downward and compress the second elastic element 56, and the first inclined surface 54 slides relative to the second inclined surface 55 during the downward movement, so as to push the seat frame locking piece 41 to move away from the first locking groove 42 and compress the first elastic element 44 until the seat frame locking piece 41 is separated from the first locking groove 42, so as to unlock the seat frame locking assembly, and thus the seat frame 111 can rotate relative to the seat assembly/disassembly assembly 12.

Further, the armrest locking assembly includes an armrest locking hole 61 disposed at a periphery of a hinge point of the armrest 14 and disposed in a radial direction, the armrest 14 is hinged to the seat frame 111, an armrest locking element 62 is disposed in the seat frame 111, the armrest locking element 62 is provided with an armrest locking pin 63 extending in a direction close to the armrest locking hole 61 and engaged with the armrest locking hole 61, and when the armrest 14 is hinged to the seat frame 111, the armrest locking pin 63 is inserted into the armrest locking hole 61 to limit rotation of the armrest 14 relative to the seat frame 111.

Still further, the armrest unlocking device includes a first sliding slot 71 disposed in the seat frame 111 along the length direction of the seat frame 111, the armrest locking element 62 is movably disposed in the first sliding slot 71, a third unlocking protrusion 72 is disposed inside the backrest frame hinge member 132, a fourth unlocking protrusion 73 capable of abutting against the third unlocking protrusion 72 is disposed at one end of the armrest locking element 62 close to the seat frame hinge member 112, a third elastic element 74 is disposed between one end of the armrest locking element 62 away from the seat frame hinge member 112 and the first sliding slot 71, a first long sliding hole 75 is disposed on the armrest locking element 62, a second long sliding hole 76 through which the armrest locking pin 63 passes is disposed at a position of the seat frame 111 corresponding to the armrest locking pin 63, so that when the armrest locking element 62 passes through the seat frame 111, the armrest locking element 62 can slide back and forth along the length direction of the seat frame 111, the armrest 14 is provided with an arc-shaped unlocking hole 77 along the hinge point on the periphery, the arc-shaped unlocking hole 77 is communicated with the armrest locking hole 61, when the armrest 14 rotates towards the direction close to the seat frame 111, the armrest bayonet pin 63 can slide along the arc-shaped unlocking hole 77, when the backrest frame 131 rotates towards the direction close to the seat frame 111, the third unlocking protrusion 72 and the fourth unlocking protrusion 73 are abutted to push the armrest locking element 62 to slide towards the direction far away from the seat frame hinge part 112 and compress the third elastic element 74, so that the armrest bayonet pin 63 moves into the arc-shaped unlocking hole 77 from the armrest locking hole 61, and the armrest 14 can rotate relative to the seat frame 111. The detailed unlocking process comprises the following steps: when the backrest frame 131 rotates toward the seat frame 111, the third unlocking protrusion 72 pushes the fourth unlocking protrusion 73, so that the armrest locking element 62 slides away from the seat frame hinge 112 and compresses the third elastic element 74, and the armrest locking pin 63 on the third elastic element 74 moves from the armrest locking hole 61 to the arc-shaped unlocking hole 77, so that the armrest locking pin 63 slides along the arc-shaped unlocking hole 77 when the armrest rotates toward the seat frame 111.

Specifically, the seat dismounting assembly 12 further includes a seat dismounting button 122 and a seat dismounting spring 123, a second sliding groove 124 for movably mounting the seat dismounting button 122 is disposed on the seat engaging joint 121, the seat dismounting spring 123 is disposed in the second sliding groove 124, and two ends of the seat dismounting spring are respectively abutted to the seat dismounting button 122 and the second sliding groove 124. On this scheme seat passed through frame such as seat dismouting subassembly 12 demountable installation perambulator, crib, its installation is dismantled simple structure, convenient operation, and its mounting structure can just adorn and the dress of turning over for the orientation of seat can freely change according to the user demand.

More specifically, the utility model further comprises a pedal group 15 hinged at one end of the seat group 11 far away from the backrest group 13, and a sail group 16 hinged on the backrest group 13. The pedal group 15 and the sail frame group 16 are common accessories of the baby carriage, so that the seat has better practicability, and the seat can be folded in a hinged mode to the maximum extent.

The baby carriage comprises a frame and the baby carriage seat which can be linked and folded, wherein the baby carriage seat which can be linked and folded is detachably arranged on the frame, the frame can be folded independently, the seat can also be folded independently, and the baby carriage seat which can be linked and folded can be matched with the frame to be folded, so that the baby carriage can be folded to the maximum extent, and the volume of the whole baby carriage after being folded is smaller.

The above description is provided for one embodiment of the present invention, and the embodiments of the present invention are not limited to these descriptions, and the present invention is not limited to the above nomenclature and the English nomenclature since the trade nomenclature is different. Similar or identical methods and structures as those of the present invention or several technical deductions or substitutions on the premise of the idea of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A baby carriage seat capable of being folded in a linkage mode is characterized by comprising a seat frame group (11), a seat dismounting assembly (12) and a backrest group (13) which are respectively arranged on two sides of the seat frame group (11) and hinged to the seat frame group (11), wherein a backrest locking assembly used for limiting the backrest group (13) to rotate relative to the seat frame group (11) is arranged at the hinged position of the seat frame group (11) and the backrest group (13), a backrest unlocking device capable of unlocking the backrest locking assembly is arranged on the backrest group (13), a seat frame locking assembly used for limiting the seat frame group (11) to rotate relative to the seat dismounting assembly (12) is arranged between the seat frame group (11) and the seat dismounting assembly (12), a seat frame unlocking device capable of unlocking the seat frame locking assembly is arranged between the backrest group (13) and the seat frame group (11), and the backrest group (13) can rotate towards the seat frame group (11) to be folded after the backrest locking assembly is unlocked, when the backrest group (13) rotates relative to the seat frame group (11), the seat frame unlocking device can be driven to unlock the seat frame locking assembly, so that the seat frame group (11) can rotate relative to the seat dismounting assembly (12) for folding;

the backrest group (13) comprises a backrest frame (131) and a backrest frame hinge part (132) arranged at the lower end of the backrest frame (131), the seat frame group (11) comprises a seat frame (111) and a seat frame hinge part (112) arranged at one end of the seat frame (111), the seat dismounting assembly (12) comprises a seat clamping joint (121), and two sides of the seat frame hinge part (112) are respectively in rotating fit with the backrest frame hinge part (132) and the seat clamping joint (121);

seat frame locking Assembly includes seat frame block spare (41), locate on seat frame articulated elements (112) with seat frame block spare (41) matched with first draw-in groove (42), locate on seat block joint (121) with seat frame block spare (41) matched with second draw-in groove (43) and locate seat frame block spare (41) and seat block first elastic element (44) between joint (121), when seat frame articulated elements (112) and seat block joint (121) are articulated, seat frame block spare (41) are located between first draw-in groove (42) and second draw-in groove (43) to restriction seat frame articulated elements (112) rotate relative seat block joint (121).

2. The stroller seat capable of being linked and folded according to claim 1, wherein the seat frame assembly (11) is hinged with an armrest (14), an armrest locking assembly for limiting the rotation of the armrest (14) relative to the seat frame assembly (11) is disposed between the seat frame assembly (11) and the armrest (14), an armrest unlocking device for unlocking the armrest locking assembly is disposed between the seat frame assembly (11) and the backrest assembly (13), and when the backrest assembly (13) is rotated in the direction of the seat frame assembly (11) for folding, the armrest unlocking device can be driven to unlock the armrest locking assembly, so that the armrest (14) can be rotated relative to the seat frame assembly (11) for folding.

3. A stroller seat according to claim 2, wherein the backrest locking assembly comprises a backrest latch (21) disposed on the seat frame hinge member (112) and a latch (22) disposed on the backrest frame (131) and extending into the seat frame hinge member (112) to cooperate with the backrest latch (21), the backrest unlocking device comprises an unlocking button (31) disposed on the backrest frame (131) for pulling the latch (22) to move and a linkage disposed between the unlocking button (31) and the latch (22), the unlocking button (31) can pull the latch (22) to move away from the backrest latch (21), so that the backrest frame (131) can rotate relative to the seat frame (111) by disengaging from the backrest latch (21).

4. A foldable stroller seat according to claim 3, wherein the seat frame unlocking means comprises a seat frame unlocking slider (51) movably disposed on the seat frame hinge (112), a first unlocking protrusion (52) disposed on the inner side of the back frame hinge (132), a second unlocking protrusion (53) disposed on the seat frame unlocking slider (51) near the first unlocking protrusion (52) and capable of abutting against the first unlocking protrusion (52), a first inclined surface (54) disposed on the seat frame unlocking slider (51) near the seat frame hinge (112), and a second inclined surface (55) disposed on the seat frame locking member (41) near the seat frame unlocking slider (51) and engaged with the first inclined surface (54), wherein when the back frame (131) rotates toward the seat frame (111), the first unlocking protrusion (52) pushes the second unlocking protrusion (53) to move the seat frame unlocking slider (51) downward, and the first inclined surface (54) and the second inclined surface (55) relatively slide, so that the seat frame locking piece (41) moves towards the direction away from the first clamping groove (42) and compresses the first elastic element (44) until the seat frame locking piece (41) is separated from the first clamping groove (42), and the seat frame (111) can rotate relative to the seat dismounting assembly (12).

5. A foldable stroller seat according to claim 4, wherein the second unlocking protrusion (53) is a tapered top block with two low ends and a high middle part, a second elastic member (56) is disposed between the seat frame hinge (112) and the seat frame unlocking slider (51) along the moving direction of the seat frame unlocking slider (51), the first unlocking protrusion (52) pushes the second unlocking protrusion (53) to compress the second elastic member (56) when the seat frame unlocking slider (51) moves downwards, and the second elastic member (56) is restored by the elastic compression force of the second elastic member (56) when the first unlocking protrusion (52) is separated from the second unlocking protrusion (53).

6. A foldable stroller seat according to claim 4, wherein the armrest locking assembly comprises an armrest locking hole (61) disposed circumferentially and radially at the hinge point of the armrest (14), the armrest (14) is hinged to the seat frame (111), an armrest locking member (62) is disposed in the seat frame (111), the armrest locking member (62) is provided with an armrest locking pin (63) extending in a direction close to the armrest locking hole (61) and engaged with the armrest locking hole (61), and when the armrest (14) is hinged to the seat frame (111), the armrest locking pin (63) is inserted into the armrest locking hole (61) to limit the rotation of the armrest (14) relative to the seat frame (111).

7. The stroller seat according to claim 6, wherein the armrest unlocking device comprises a first sliding slot (71) disposed in the seat frame (111) along the length direction of the seat frame (111), the armrest locking element (62) is movably disposed in the first sliding slot (71), a third unlocking protrusion (72) is disposed inside the backrest frame hinge member (132), a fourth unlocking protrusion (73) capable of abutting against the third unlocking protrusion (72) is disposed at an end of the armrest locking element (62) close to the seat frame hinge member (112), a third elastic element (74) is disposed between an end of the armrest locking element (62) far from the seat frame hinge member (112) and the first sliding slot (71), a first long sliding hole (75) is disposed on the armrest locking element (62), and a second long sliding hole (76) for the armrest bayonet pin (63) to pass through is disposed at a position of the seat frame (111) corresponding to the armrest bayonet pin (63) When the armrest bayonet lock (63) penetrates through the seat frame (111), the armrest locking element (62) can slide back and forth along the length direction of the seat frame (111), an arc unlocking hole (77) is formed in the hinged position of the armrest (14) along the peripheral side of the hinged point, the arc unlocking hole (77) is communicated with the armrest locking hole (61), when the armrest (14) rotates towards the direction close to the seat frame (111), the armrest bayonet lock (63) can slide along the arc unlocking hole (77), when the backrest frame (131) rotates towards the direction close to the seat frame (111), the third unlocking lug (72) is abutted against the fourth unlocking lug (73) to push the armrest locking element (62) to slide towards the direction far away from the seat frame hinged piece (112) and compress the third elastic element (74), so that the armrest bayonet lock (63) moves into the arc unlocking hole (77) from the armrest locking hole (61), the armrest (14) can rotate relative to the seat frame (111).

8. The stroller seat capable of being linked and folded according to claim 3, wherein the seat assembly and disassembly assembly (12) further comprises a seat assembly and disassembly button (122) and a seat assembly and disassembly spring (123), a second sliding groove (124) for movably mounting the seat assembly and disassembly button (122) is formed in the seat engagement joint (121), the seat assembly and disassembly spring (123) is arranged in the second sliding groove (124), and two ends of the seat assembly and disassembly spring respectively contact with the seat assembly and disassembly button (122) and the second sliding groove (124).

9. A stroller comprising a frame and a foldable stroller seat according to any one of claims 1 to 8, wherein the foldable stroller seat is detachably mounted to the frame.