CN216783608U - Handle-driven unlocking seat folding baby carriage - Google Patents

Abstract

The utility model belongs to the technical field of baby carriages, in particular to a baby carriage with a foldable seat driven by a handle to be unlocked, which comprises an upper frame, a front lower frame hinged with the upper frame and a seat mounting piece hinged with the front lower frame and used for mounting the foldable seat, wherein a locking assembly for limiting the relative rotation of the front lower frame and the seat mounting piece is arranged between the front lower frame and the seat mounting piece, a linkage unlocking mechanism for unlocking the locking assembly is arranged between the upper frame and the front lower frame, when the upper frame is rotationally unlocked relative to the front lower frame, the linkage unlocking mechanism can be driven to unlock the locking assembly, so that the seat mounting piece can rotate relative to the front lower frame, and further the foldable seat rotates, the foldable seat is firstly folded, and the locking of the seat mounting piece and the front lower frame is unlocked by the handle in the process of unlocking the upper frame to fold the frame body, therefore, the seat can be rotated and folded together, and the folding operation is simpler and more convenient due to the linked unlocking and folding mode.

Description

Handle-driven unlocking seat folding baby carriage

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of baby carriers, and particularly relates to a baby carrier with a handle driving unlocking seat for folding.

[ background of the utility model ]

The folding of the existing baby carriage is generally completed by hinging and rotating the carriage to fold the baby carriage. And to the rotation folding mode of taking seat bassinet, in order to make the bassinet folding back whole space littleer, be convenient for deposit, generally have multistage formula fold up, at first need the back frame to rotate to seat frame direction and fold, then through unlocking device unblock seat and frame relative rotation with the seat folding, the rethread is folding the frame and is accomplished whole car and fold, complex operation, it is inconvenient to fold.

[ Utility model ] content

The utility model provides a baby carriage which is driven by a handle to unlock a seat, rotates relative to a frame and is folded, and the folding operation is simpler and more convenient.

The utility model is realized by the following technical scheme:

folding bassinet of hand (hold) drive unblock seat, including the frame body and locate the folding seat on the frame body, the frame body includes the frame, with go up frame articulated down the frame before and with preceding frame articulated down the articulated confession of frame the seat installed part of folding seat installation, be equipped with down frame and the relative pivoted locking subassembly of seat installed part before the restriction between frame and the seat installed part down before preceding, go up and be equipped with the linkage release mechanism who is used for unblock locking subassembly between frame and the preceding frame of getting off, when going up frame relatively preceding frame and getting off the frame and rotate, can drive linkage release mechanism unblock locking subassembly, make the frame rotates before the seat installed part is relative.

As above the folding bassinet of hand (hold) drive unblock seat, it is equipped with first articulated elements to go up the frame lower extreme, be equipped with respectively with first articulated elements and seat installed part complex second articulated elements down on the frame before, the locking subassembly includes the locking fixture block, sets up first locking groove and the second locking groove on seat installed part and the preceding frame of getting down respectively and locate the elastic element in the first locking groove, locking fixture block one end stretches into in the first locking groove, and the other end is pushed up to the second by elastic element and is locked in the groove to the frame rotates before restricting the seat installed part relatively.

As above the folding bassinet of hand (hold) drive unblock seat, linkage release mechanism is including the unblock piece, unblock piece one end is located the second and is locked the groove in and the contact of locking fixture block, the other end pass down before the frame with go up the frame and push up mutually and touch, when going up the frame and rotating the unblock down relatively, can push away the unblock piece and remove along keeping away from second locking groove direction to drive unblock piece ejection locking fixture block, make locking fixture block one end compression elastic element, the second locking groove is kept away from to the other end, accomplishes the unblock when locking fixture block breaks away from the second locking groove completely, makes the seat installed part can be relative before the frame rotates down.

As above handle drive unblock seat folding bassinet, linkage release mechanism is still including locating go up the frame on supply the unblock piece to stretch into the recess and with the top pushes away the inclined plane that the recess bottom is connected, the top pushes away the inclined plane from the recess bottom toward being close to the unblock piece direction slope extends the setting, when going up frame relative preceding frame and lower frame rotation unblock, the top pushes away the inclined plane top the unblock piece removes along keeping away from second locking groove direction.

The handle drives the unlocking seat to fold the baby carriage, the unlocking piece comprises an unlocking driving ring and an unlocking guide pillar, one end of the unlocking driving ring is in contact with the locking clamping block, the other end of the unlocking driving ring is connected with the unlocking guide pillar, and one end, far away from the unlocking driving ring, of the unlocking guide pillar penetrates through the front lower frame and extends into the groove.

The handle drives the unlocking seat to fold the baby carriage, the unlocking guide posts comprise two, the upper frame and the lower frame of the unlocking guide posts are symmetrically arranged relative to a rotating shaft of the front frame and the lower frame, and the upper frame is provided with grooves and a pushing inclined plane which are respectively arranged corresponding to the two unlocking guide posts.

As above the folding bassinet of hand (hold) drive unblock seat, the locking fixture block includes installation department and a plurality of chucking part of locating installation department week side, first locking groove includes the first mounting groove with installation department matched with and a plurality of first mounting groove week side of locating corresponds the first draw-in groove that the cooperation set up with the chucking part, elastic element locates in the first mounting groove, second locking groove includes the second mounting groove with installation department matched with and a plurality of second mounting groove week side of locating corresponds the second draw-in groove that the cooperation set up with the chucking part.

As above the folding bassinet of seat is unlocked in the hand (hold) drive, the frame body still including the hinge locate go up the frame and keep away from the hand (hold) of preceding lower frame one end and with go up the frame and keep away from preceding lower frame one side articulated back lower frame.

As above folding bassinet of seat is unlocked in hand (hold) drive, collapsible seat include with seat installation spare cooperation installation the seat frame and with seat frame articulated back frame, just seat frame and the articulated department of back frame are equipped with the restriction the relative seat frame pivoted of back frame first locking subassembly, be equipped with on the back frame and unblock first locking subassembly's unlocking device, first locking subassembly unblock back, the back frame can rotate to seat frame direction and fold up.

The handle drives the unlocking seat folding baby carriage, the armrest is also arranged between the backrest frame and the seat frame, and when the backrest frame rotates relative to the seat frame, the armrest can be unlocked, so that the armrest can rotate relative to the seat frame and can be folded together; the back frame lower extreme is equipped with back frame articulated elements, be equipped with on the seat frame with back frame articulated elements complex seat frame articulated elements, the handrail lower extreme also is equipped with the handrail articulated elements that is located between back frame articulated elements and the seat frame articulated elements, first locking subassembly is including locating first kayser piece of being connected with seat frame articulated elements between back frame articulated elements and the seat frame articulated elements, unlocking device is including locating on the back frame and extend to in the seat frame articulated elements with first kayser piece complex kayser bolt, locate and pull on the back frame the unblock button that kayser bolt removed and locate the line of being connected between unblock button and the kayser bolt, can pull the kayser bolt through the unblock button and remove to the back frame, make it break away from first kayser piece and can make the relative seat frame rotation of back frame.

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

1. the utility model provides a baby carrier with a handle driving unlocking seat for folding, which comprises an upper frame, a front lower frame hinged with the upper frame and a seat mounting piece hinged with the front lower frame and used for mounting a foldable seat, wherein a locking assembly for limiting the relative rotation of the front lower frame and the seat mounting piece is arranged between the front lower frame and the seat mounting piece, a linkage unlocking mechanism for unlocking the locking assembly is arranged between the upper frame and the front lower frame, when the upper frame is rotationally unlocked relative to the front lower frame, the linkage unlocking mechanism can be driven to unlock the locking assembly, so that the seat mounting piece can rotate relative to the front lower frame, and further the foldable seat can rotate relative to the front lower frame, the folding seat is firstly folded, the locking of the seat mounting piece and the front lower frame is unlocked by the handle in the process of unlocking the upper frame to fold the frame body, therefore, the seat can be rotated and folded together, and the folding operation is simpler and more convenient due to the linked unlocking and folding mode.

2. After folding collapsible seat in this scheme, seat installed part rotates with preceding frame of getting off for can further fold between collapsible seat and the preceding frame of getting off, cooperation frame self and seat self can folding form alone, but feasible this scheme bassinet furthest's shrink is folded.

[ 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 introduced below.

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

FIG. 2 is a schematic view of the seat of the present invention shown separated from the frame body;

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

FIG. 4 is an exploded view of the articulation of the frame body of the present invention;

FIG. 5 is a cross-sectional view of the articulation of the frame body with the locking assembly of the present invention locked;

FIG. 6 is a cross-sectional view of the articulation of the frame body with the lock assembly unlocked in accordance with the present invention;

FIG. 7 is a folded back view of the present invention;

FIG. 8 is a folded seat chair configuration with the locking assembly of the present invention unlocked;

FIG. 9 is a folded view of the stroller of the present invention;

FIG. 10 is a block diagram of a folding seat;

FIG. 11 is an exploded view of the structure of the folding seat;

FIG. 12 is an exploded view of a hinge of a foldable seat;

fig. 13 is an exploded view of the hinge joint of the foldable seat.

[ detailed description ] embodiments

In a specific embodiment, the handle-driven unlocking seat folding stroller shown in fig. 1 to 13 includes a frame body 1 and a foldable seat 2 disposed on the frame body 1, where the frame body 1 includes an upper frame 11, a front lower frame 12 hinged to the upper frame 11, and a seat mounting part 13 hinged to the front lower frame 12 and used for mounting the foldable seat 2, a locking component 3 is disposed between the front lower frame 12 and the seat mounting part 13 and used for limiting relative rotation between the front lower frame 12 and the seat mounting part 13, a linkage unlocking mechanism for unlocking the locking component 3 is disposed between the upper frame 11 and the front lower frame 12, and when the upper frame 11 rotates relative to the front lower frame 12, the linkage unlocking mechanism can be driven to unlock the locking component 3, so that the seat mounting part 13 rotates relative to the front lower frame 12. When the upper frame 11 is rotated and unlocked relative to the front lower frame 12, the unlocking member 4 is driven to move to unlock the locking assembly 3, so that the seat mounting member 13 can rotate relative to the front lower frame 12, so that the foldable seat can rotate relative to the front lower frame, the proposal firstly folds the foldable seat, when the handle 14 is used for unlocking the rotation of the upper frame 11 to fold the frame body 1, the seat installation piece 13 and the front lower frame 12 are unlocked, thereby leading the foldable seat 2 to be capable of rotating and folding together and the linked unlocking and folding way to lead the folding operation to be more convenient, and the foldable seat 2 rotates together with the seat installation part 13 relative to the front lower frame 12, the seat installation part and the front lower frame can be further folded in the scheme, and the frame and the seat can be independently folded in a matching mode, so that the baby carriage can be folded in a retracted mode to the maximum extent.

Specifically, the lower end of the upper frame 11 is provided with a first hinge element 111, the lower front frame 12 is provided with a second hinge element 121 respectively matched with the first hinge element 111 and the seat mounting element 13, the locking assembly 3 comprises a locking fixture block 31, a first locking groove 32 and a second locking groove 33 respectively arranged on the seat mounting element 13 and the lower front frame 12, and an elastic element 34 arranged in the first locking groove 32, one end of the locking fixture block 31 extends into the first locking groove 32, and the other end of the locking fixture block 31 is pushed to the second locking groove 33 by the elastic element 34 to limit the seat mounting element 13 to rotate relative to the lower front frame 12. Be provided with elastic element 34, elastic element 34 adopts reset spring, by reset spring's effect for locking fixture block 31 keeps its both ends to stretch into respectively to first locking groove 32 and second locking groove 33 after the unblock, restricts seat installation spare 13 and preceding lower frame 12 and rotates relatively, rational in infrastructure.

In addition, linkage release mechanism includes unlocking piece 4, unlocking piece 4 one end locate in second locking groove 33 with lock fixture block 31 contact, the other end pass before down frame 12 with it touches to go up frame 11 top mutually, when going up frame 11 relative preceding lower frame 12 and rotate the unblock, can push up unlocking piece 4 along keeping away from second locking groove 33 direction and remove to drive unlocking piece 4 and push up lock fixture block 31, make locking fixture block 31 one end compression elastic element 34, second locking groove 33 is kept away from to the other end, accomplish the unblock when locking fixture block 31 breaks away from second locking groove 33 completely, make seat installation part 13 frame 12 rotates before can being relative. When the upper frame 11 is folded towards the direction close to the front lower frame 12, the first hinge 111 rotates, and the unlocking member 4 is driven by the cam transmission mechanism to push the locking fixture block 31, so that unlocking is completed.

Further, linkage release mechanism is still including locating go up on frame 11 supply the unblock piece 4 to stretch into recess 5 and with the top that 5 bottoms of recess are connected pushes away inclined plane 6, top pushes away inclined plane 6 from recess 5 bottoms toward being close to the 4 direction slopes of unblock piece extend the setting, when frame 12 rotates the unblock before going up 11 relative, top pushes away inclined plane 6 top unblock piece 4 removes along keeping away from second locking groove 33 direction. Before folding, unblock piece 4 stretches into in recess 5, and frame 11 is folding in-process to being close to preceding lower frame 12 direction when the hand (hold) is folding to be driven, and unblock piece 4 pushes away inclined plane 6 relative movement with the top that increases gradually in recess 5 along with the rotation of first articulated elements 111, pushes away unblock piece 4 to being close to first locking groove 32 direction gradually by top inclined plane 6, and until unblock piece 4 breaks away from second locking groove 33, realizes the unblock between seat installed part 13 and preceding lower frame 12.

Specifically, the unlocking piece 4 includes an unlocking driving ring 41 and an unlocking guide post 42, one end of the unlocking driving ring 41 is in contact with the locking fixture block 31, the other end of the unlocking driving ring is connected with the unlocking guide post 42, and one end of the unlocking guide post 42, which is far away from the unlocking driving ring 41, penetrates through the front lower frame 12 and extends into the groove 5. More specifically, the unlocking guide posts 42 include two unlocking guide posts 42, the two unlocking guide posts 42 are symmetrically arranged on the upper frame 11 relative to the rotation axis of the front lower frame 12, and the upper frame 11 is provided with a groove 5 and a pushing inclined surface 6, which are respectively arranged corresponding to the two unlocking guide posts 42. The two pushing inclined planes 6 are arranged along the same circumferential direction, and the two groups of unlocking guide columns 42 are in relative sliding fit with the pushing inclined planes 6, so that the pushing is more stable and is not easy to deviate.

Further, the locking clamping block 31 includes an installation portion 311 and a plurality of clamping portions 312 disposed on the periphery of the installation portion 311, the first locking groove 32 includes a first mounting groove 321 matched with the installation portion 311 and a plurality of first clamping grooves 322 disposed on the periphery of the first mounting groove 321 and corresponding to the clamping portions 312, the elastic element 34 is disposed in the first mounting groove 321, the second locking groove 33 includes a second mounting groove 331 matched with the installation portion 311 and a plurality of second clamping grooves 332 disposed on the periphery of the second mounting groove 331 and corresponding to the clamping portions 312. Specifically, the number of the clamping parts 312 is three, and the three clamping parts 312 are uniformly arranged along the circumference of the mounting part 311.

Still further, the frame body 1 further includes a handle 14 hinged to one end of the upper frame 11 far away from the front lower frame 12, and a rear lower frame 15 hinged to one side of the upper frame 11 far away from the front lower frame 12. When the foldable seat is folded, the handle 14 is turned upwards relative to the upper frame 11 to fold the upper frame 11, the upper frame 11 and the front lower frame 12 both rotate towards the rear lower frame 15 to fold the stroller frame, and the unlocking guide post 4 in the groove 5 rotates relative to the pushing inclined plane 6 along with the rotation of the first hinge part 111 when the front lower frame 12 is pressed down, and is pushed by the pushing inclined plane 6 until the locking fixture block 31 is separated from the second locking groove 33, so that the foldable seat 2 can rotate relative to the frame body 1, the folded whole stroller has smaller volume, and the folding operation is simpler.

Specifically, foldable seat 2 include with seat installation part 13 cooperation installation seat frame 21 and with seat frame 21 articulated back frame 22, just seat frame 21 and the articulated department of back frame 22 are equipped with the restriction the relative seat frame 21 pivoted of back frame 22 first locking component, be equipped with on the back frame 22 and unblock first locking component's unlocking device 7, first locking component unblock back, back frame 22 can rotate to seat frame 21 direction and fold up. The back frame can be rotated to seat frame direction and is folded, and can further be folded between seat installed part 13 and preceding lower frame 12 in this scheme for the whole space is littleer after the bassinet is folded and folded up, is convenient for deposit and places, and cooperation frame self can folding form, makes but this scheme bassinet furthest's shrink folding.

Specifically, in this embodiment, a handrail 23 is further disposed between the backrest frame 22 and the seat frame 21, and when the backrest frame 22 rotates relative to the seat frame 21, the handrail 23 can be unlocked, so that the handrail 23 can rotate relative to the seat frame 21 and be folded together. The handrail is also the conventional structure on the children's chair, and the handrail is located between seat frame and the back frame, and this scheme utilization back frame rotates the in-process of folding up, the locking of unblock handrail frame by the way to make the handrail also can rotate folding together, make folding operation simpler.

More specifically, a backrest frame hinge member 221 is provided at the lower end of the backrest frame 22, a seat frame hinge member 211 engaged with the backrest frame hinge member 221 is provided on the seat frame 21, the lower end of the armrest 23 is also provided with an armrest hinge 231 between the back frame hinge 221 and the seat frame hinge 211, the first locking assembly includes a first latch 81 disposed between the back frame hinge member 221 and the seat frame hinge member 211 and coupled to the seat frame hinge member 211, the unlocking device 7 comprises a locking bolt 71 which is arranged on the backrest frame 22 and extends into the seat frame hinge part 211 to be matched with the first locking piece 81, an unlocking button which is arranged on the backrest frame 22 and can pull the locking bolt 71 to move, and a connecting rope which is arranged between the unlocking button and the locking bolt 71, the latch bolt 71 can be pulled to move toward the back frame 22 by the unlock button to disengage the first latch 81, so that the back frame 22 can rotate relative to the seat frame 21. The connecting rope in this scheme adopts wire rope can. In addition, the backrest frame is fixed relative to the seat frame through the matching of the locking bolt and the first locking piece. After the latch bolt is disengaged, the backrest frame can rotate relative to the first latch member or the seat frame.

Further, a backrest angle adjusting component capable of adjusting the angle between the backrest frame 22 and the seat frame 21 is further arranged between the backrest frame 22 and the seat frame 21. The angle of the backrest can be adjusted according to different use requirements, and different sitting postures can be adjusted.

Specifically, the peripheral wall of the first locking member 81 is provided with a plurality of adjusting bayonets 301 for the locking latches 71 to be inserted, and the angle of the backrest can be adjusted by separating the locking latches 71 from other adjusting bayonets 301 and inserting the locking latches 71 into the other adjusting bayonets 301 through the unlocking button. The backrest frame can be folded by rotating towards the seat frame by utilizing the existing structure of the locking assembly after being unlocked by the unlocking device, and different backrest angles can be adjusted by rotating in a small range or rotating in the reverse direction.

Still further, a backrest height adjusting assembly for adjusting the height of the backrest frame 22 is further provided on the backrest frame 22. Still be equipped with back 220 on the back frame 22, back height control subassembly is including locating in back 220 and outstanding elasticity locating part 61 to the back 220 outside, be equipped with the regulation hole 62 that a plurality of elasticity locating parts 61 cards are gone into on the back frame 22, can adjust in the regulation hole 62 to different positions through adjusting elasticity locating part 61 card income the height of back 220. The backrest on the foldable seat also has a height adjusting function, the height of the backrest can be adjusted in multiple gears by utilizing the matching form of the elastic limiting part and different adjusting holes on the backrest frame, and the backrest can move relative to the backrest frame only by pulling the backrest with force by adopting a sliding adjusting and elastic limiting part structure, and the elastic limiting part can be clamped into the corresponding adjusting hole under the elastic action when the backrest moves to the position opposite to the adjusting hole so as to finish the height adjustment. The backrest frame is simple and easy to adjust and operate, has a simple structure, and can relatively fix the backrest and the backrest frame without an independent unlocking structure.

In addition, one end of the elastic limiting member 61 extending to the outside of the backrest 220 is a spherical surface or a steel ball. The spherical structure can make the elastic limiting part 61 separate from the original adjusting hole by pulling the backrest with force when needing to adjust, so that the backrest can move to adjust the height.

Specifically, a return spring is further disposed between the inner side of the elastic limiting member 61 and the backrest 220.

The foregoing is an embodiment provided in connection with the detailed description and is not intended to limit the utility model to the particular embodiments described herein, nor to limit the utility model to the specific embodiments described herein, or to the specific embodiments described herein. Similar or identical methods, structures and the like as those of the present invention or several technical deductions or substitutions made on the premise of the conception of the present invention should be considered as the protection scope of the present invention.

Claims (9)

1. A baby carrier with a handle driving unlocking seat for folding comprises a frame body (1) and a foldable seat (2) arranged on the frame body (1), it is characterized in that the frame body (1) comprises an upper frame (11), a front lower frame (12) hinged with the upper frame (11) and a seat mounting piece (13) hinged with the front lower frame (12) and used for mounting the foldable seat (2), a locking component (3) for limiting the relative rotation of the front lower frame (12) and the seat mounting piece (13) is arranged between the front lower frame (12) and the seat mounting piece (13), a linkage unlocking mechanism for unlocking the locking component (3) is arranged between the upper frame (11) and the front lower frame (12), when the upper frame (11) rotates relative to the front lower frame (12), the linkage unlocking mechanism can be driven to unlock the locking assembly (3) so that the seat mounting piece (13) rotates relative to the front lower frame (12);

go up frame (11) lower extreme and be equipped with first articulated elements (111), be equipped with respectively on preceding lower frame (12) with first articulated elements (111) and seat installed part (13) complex second articulated elements (121), locking subassembly (3) including locking fixture block (31), set up respectively in seat installed part (13) and preceding first locking groove (32) and second locking groove (33) on lower frame (12) and locate elastic element (34) in first locking groove (32), locking fixture block (31) one end stretches into in first locking groove (32), and the other end is by elastic element (34) ejection to second locking groove (33) in to frame (12) rotate under restriction seat installed part (13) is relative.

2. The handlebar-actuated unlock seat folded stroller as recited in claim 1, the linkage unlocking mechanism comprises an unlocking piece (4), one end of the unlocking piece (4) is arranged in a second locking groove (33) and is contacted with a locking clamping block (31), the other end of the unlocking piece penetrates through a front lower frame (12) and is contacted with the upper frame (11) in a jacking way, when the upper frame (11) rotates to unlock relative to the front lower frame (12), the pushing unlocking piece (4) can move along the direction of being far away from the second locking groove (33) to drive the unlocking piece (4) to push the locking fixture block (31), so that one end of the locking fixture block (31) compresses the elastic element (34), the other end of the locking fixture block is far away from the second locking groove (33), and the unlocking is completed until the locking fixture block (31) is completely separated from the second locking groove (33), so that the seat mounting piece (13) can rotate relative to the front lower frame (12).

3. The handlebar-driven unlocking seat-folded baby carriage as claimed in claim 2, wherein the linkage unlocking mechanism further comprises a groove (5) which is formed in the upper frame (11) and into which the unlocking piece (4) extends and a pushing inclined plane (9) connected with the bottom of the groove (5), the pushing inclined plane (9) is obliquely extended from the bottom of the groove (5) to be close to the unlocking piece (4), and when the upper frame (11) rotates to be unlocked relative to the lower frame (12), the pushing inclined plane (9) pushes the unlocking piece (4) to move along the direction away from the second locking groove (33).

4. The handlebar-driven unlocking seat folding stroller according to claim 3, characterized in that the unlocking member (4) comprises an unlocking driving ring (41) and an unlocking guide post (42), one end of the unlocking driving ring (41) is in contact with the locking fixture block (31), the other end is connected with the unlocking guide post (42), and one end of the unlocking guide post (42) far away from the unlocking driving ring (41) penetrates through the front lower frame (12) and extends into the groove (5).

5. The handlebar-driven unlocking seat folding stroller according to claim 4, characterized in that the unlocking guide posts (42) comprise two, the two unlocking guide posts (42) are symmetrically arranged on the upper frame (11) relative to the rotation axis of the front lower frame (12), and the upper frame (11) is provided with a groove (5) and a pushing inclined surface (9) which are respectively arranged corresponding to the two unlocking guide posts (42).

6. The handlebar-driven unlocking seat-folded stroller according to claim 3, wherein the locking fixture block (31) comprises an installation part (311) and a plurality of clamping parts (312) arranged on the periphery of the installation part (311), the first locking groove (32) comprises a first mounting groove (321) matched with the installation part (311) and a plurality of first clamping grooves (322) arranged on the periphery of the first mounting groove (321) and corresponding to the clamping parts (312), the elastic element (34) is arranged in the first mounting groove (321), the second locking groove (33) comprises a second mounting groove (331) matched with the installation part (311) and a plurality of second clamping grooves (332) arranged on the periphery of the second mounting groove (331) and corresponding to the clamping parts (312).

7. The handlebar-driven unlocking seat folding stroller as claimed in claim 1, characterized in that the frame body (1) further comprises a handlebar (14) hinged to one end of the upper frame (11) away from the front lower frame (12), and a rear lower frame (15) hinged to one side of the upper frame (11) away from the front lower frame (12).

8. The stroller with unlocked seat folded according to claim 1, wherein the foldable seat (2) comprises a seat frame (21) installed with a seat installation member (13) and a backrest frame (22) hinged to the seat frame (21), and a first locking assembly for limiting the rotation of the backrest frame (22) relative to the seat frame (21) is arranged at the joint of the seat frame (21) and the backrest frame (22), and an unlocking device (7) for unlocking the first locking assembly is arranged on the backrest frame (22), and after the first locking assembly is unlocked, the backrest frame (22) can rotate towards the seat frame (21) for folding.

9. The handlebar-driven unlocking seat folding stroller as claimed in claim 8, characterized in that an armrest (23) is further provided between the backrest frame (22) and the seat frame (21), and when the backrest frame (22) rotates relative to the seat frame (21), the armrest (23) can be unlocked, so that the armrest (23) can rotate relative to the seat frame (21) and can be folded together; the utility model discloses a chair with the back of the body frame, including back frame (22) lower extreme, be equipped with on seat frame (21) with back frame articulated elements (221) complex seat frame articulated elements (211), handrail (23) lower extreme also is equipped with handrail articulated elements (231) that are located between back frame articulated elements (221) and seat frame articulated elements (211), first locking subassembly is including locating first card latch spare (81) of being connected with seat frame articulated elements (211) between back frame articulated elements (221) and seat frame articulated elements (211), unlocking device (7) including locate back frame (22) and extend to in seat frame articulated elements (211) with first card latch spare (81) complex kayser bolt (71), locate on back frame (22) and pull kayser bolt (71) removal unlock button and locate the connection rope between unlock button and kayser bolt (71), the locking bolt (71) can be pulled to move towards the backrest frame (22) through the unlocking button, so that the backrest frame (22) can rotate relative to the seat frame (21) by disengaging from the first locking piece (81).

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