CN210618249U

CN210618249U - Baby carriage

Info

Publication number: CN210618249U
Application number: CN201921398649.8U
Authority: CN
Inventors: 莫剑星
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-05-26
Anticipated expiration: 2029-08-26

Abstract

The utility model discloses a baby carriage, wherein, the rear leg is rotationally connected with the front leg; the lower end of the front support rod is rotatably connected with the upper end of the front leg or the upper end of the rear leg; the position of the hand push rod close to the lower end of the hand push rod is rotationally connected with the upper end of the front stay rod; the rear support rod is provided with an upper connecting end and a lower connecting end, the upper connecting end is rotatably connected with the lower end of the hand push rod, and the position of the upper part of the rear support rod, close to the lower connecting end, is rotatably connected with the rear leg; one end of the traction rod is rotatably connected with the front leg, and the other end of the traction rod is rotatably connected with the lower connecting end; the convex seat is fixedly arranged on the front support rod and is close to the lower end of the front support rod; the supporting seat is rotatably connected with the convex seat, and a connecting position for connecting a seat part is arranged on the supporting seat; one end of the linkage rod is rotatably connected with the supporting seat, and the other end of the linkage rod is rotatably connected with the rear leg or the rear supporting rod. The utility model discloses simple structure, convenient operation, folding back is small.

Description

Baby carriage

[ technical field ] A method for producing a semiconductor device

The utility model relates to a baby carriage.

[ background of the invention ]

The baby carriage is an indispensable product in the growth process of infants. The present strollers on the market are generally collapsible for easy carrying or storage. But the baby carriage in the current market still has the problems of inconvenient folding operation and larger volume after being folded.

Therefore, the present invention is based on the above disadvantages.

[ Utility model ] content

The utility model aims at overcoming the defects of the prior art and providing a baby carriage which has simple structure, convenient operation and small volume after being folded.

The utility model discloses a realize through following technical scheme:

a stroller, movable from an unfolded position to a folded position after a locking device is unlocked, comprising a frame 1 and a seat part 2 connected to the frame 1, characterized in that: the frame 1 includes:

the front legs 11, the front legs 11 are connected with front wheels 11 a;

the rear legs 12 are connected with rear wheels 12a, and the rear legs 12 are rotatably connected with the front legs 11;

the lower end of the front stay bar 13 is rotatably connected with the upper end of the front leg 11 or the upper end of the rear leg 12;

the hand push rod 14 is rotatably connected with the upper end of the front support rod 13 at the position close to the lower end of the hand push rod 14;

the rear support rod 15 is provided with an upper connecting end 15a and a lower connecting end 15b, the upper connecting end 15a is rotatably connected with the lower end of the hand push rod 14, and the rear support rod 15 is rotatably connected with the rear leg 12 at a position close to the lower connecting end 15 b;

a traction rod 16, one end of the traction rod 16 is rotatably connected with the front leg 11, and the other end is rotatably connected with the lower connecting end 15 b;

the convex seat 17 is fixedly arranged on the front support rod 13 and is close to the lower end position of the front support rod 13;

a support seat 18, wherein the support seat 18 is rotatably connected with the protruding seat 17, and a connecting position 19 for connecting the seat part 2 is arranged on the support seat 18;

and one end of the linkage rod 10 is rotatably connected with the support seat 18, and the other end of the linkage rod 10 is rotatably connected with the rear leg 12 or the rear support rod 15.

The stroller as described above, characterized in that: the protruding seat 17 extends to the rear side of the stroller, the rear side of the supporting seat 18 is rotatably connected with the rear side of the protruding seat 17, and the linkage rod 10 is rotatably connected with the front side of the supporting seat 18.

The stroller as described above, characterized in that: the linkage rod 10, the rear leg 12 and the rear support rod 15 are coaxially hinged.

The stroller as described above, characterized in that: the seat component 2 comprises a seat underframe 21 which can be detachably connected with the connecting position 19, the front side of the seat underframe 21 is provided with a seat front rod 22 with the lower end rotatably connected with the seat underframe 21, the upper end of the seat front rod 22 is rotatably connected with a seat push rod 23, the seat front rod 22 is rotatably connected on the seat push rod 23 and is close to the lower end of the seat push rod 23, a seat rear rod 24 which is rotatably connected with the seat push rod 23 and the seat underframe 21 is arranged between the lower end of the seat push rod 23 and the rear side of the seat underframe 21, the seat front rod 22, the seat underframe 21, the seat rear rod 24 and the seat push rod 23 form a four-bar mechanism which can be unfolded or folded, and the seat component 2 further comprises a locking mechanism which is used for locking the unfolded state of the seat component when the seat component.

The stroller as described above, characterized in that: connecting position 19 including establishing the connecting groove 191 on supporting seat 18, connecting groove 191 in be equipped with horizontal connecting axle 192, seat chassis 21 include seat bottom plate 211, seat front mast 22 and seat back mast 24 rotate and connect on seat bottom plate 211, seat bottom plate 211 on be equipped with connecting seat 212, connecting seat 212 on be equipped with and supply connecting axle 192 card to go into open slot 213 when it inserts connecting groove 191, connecting seat 212 in still be equipped with and to lock connecting axle 192 after connecting seat 212 inserts connecting groove 191, and then lock seat part 2 at the kayser subassembly 25 on frame 1.

The stroller as described above, characterized in that: the locking assembly 25 comprises an L-shaped locking rod 251 rotatably connected in the connecting seat 212, one end of the locking rod 251 is provided with a locking hook 252 capable of hooking the connecting shaft 192 to seal and fix the connecting shaft 192 in the opening groove 213, a return spring 253 is arranged between the other end of the locking rod 251 and the connecting seat 212, and the connecting seat 212 is also internally provided with a pull cable 254 which is connected with the locking rod 251 and can pull the locking rod 251 to rotate.

The stroller as described above, characterized in that: the pull cable 254 penetrates into the seat front rod 22, an operation block 255 which is exposed and can rotate relative to the seat front rod 22 is arranged on the seat front rod 22, and the pull cable 254 is connected to the operation block 255.

The stroller as described above, characterized in that: the operating block 255 is provided with a sliding block 256 which can slide relative to the operating block and can abut against the outer side wall of the front seat rod 22 to prevent the operating block 255 from rotating when the seat part 2 is locked with the frame 1, and the operating block 255 is provided with a leaning spring 257 which abuts against the sliding block 256.

The stroller as described above, characterized in that: the front side of the seat part 2 is detachably connected with a T-shaped front armrest 3, and the front armrest 3 comprises a connecting part 31 which can be connected with the seat part 2 and an armrest rod 32 which can rotate relative to the connecting part 31.

The stroller as described above, characterized in that: the connecting component 31 includes a socket 311, the grab bar 32 is rotatably connected to the socket 311, a downwardly convex clamping seat 312 is arranged on the front side of the seat component 2, a jack 313 through which the socket 311 is inserted is arranged on the clamping seat 312, a moving block 314 capable of moving transversely is arranged in the socket 311, a lower convex block 315 is arranged on the lower side of the moving block 314, a clamping hole 316 through which the lower convex block 315 can be clamped is arranged on the clamping seat 312, the moving block 314 is further provided with an upper convex block 317 which can protrude the edge of the jack 313 to clamp the seat component 2 when the lower convex block 315 is clamped into the clamping hole 316, and a first spring 318 which can abut against the moving block 314 is arranged in the socket 311.

Compared with the prior art, the utility model discloses there is following advantage:

1. the utility model discloses when the perambulator was folding, promote the handspike forward, the upper end of preceding vaulting pole and the upper end of back vaulting pole then are close to the back leg lower extreme, and the relative back leg of back vaulting pole rotates the in-process, the lower link perk of back vaulting pole to draw close foldingly to the back leg through traction lever pulling foreleg, meanwhile, when the relative back leg of preceding vaulting pole rotates, certain effort is applyed to the supporting seat to the protrusion seat, makes the relative protrusion seat of interlock pole and supporting seat all take place to rotate, finally realizes that the perambulator is folding. When the baby carriage is folded, only the locking device I is needed to be unlocked, and then the hand push rod is pushed forwards and pressed downwards.

2. The utility model discloses a seat part is including can dismantling the seat chassis of being connected with the connection position, seat chassis front side is equipped with the lower extreme and rotates the seat front rod of being connected rather than, the rotation of seat front rod upper end is connected with the seat push rod to the seat front rod rotates to be connected on the seat push rod and is close to seat push rod lower extreme position, be equipped with the seat back bar of being connected with the two rotation between seat push rod lower extreme and the seat chassis rear side, pole, seat chassis, seat back bar and seat push rod constitute and can expand or folding four-bar linkage before the seat. The seat underframe is detachably connected with the connecting position on the frame, so the seat component can be reversed front and back, and a user can select the orientation of the seat component according to the requirement, thereby being more humanized. In addition, the seat component is a four-bar mechanism, so that the structure is more stable, the sitting space for the infant is larger, the side of the infant in the seat component can be better protected, and the safety is ensured. When the baby carriage is folded, the locking mechanism of the seat component is unlocked, then the seat push rod is pushed forwards, the upper end of the seat push rod is close to the lower end of the seat front rod, the lower end of the seat push rod pushes the upper end of the seat front rod and the upper end of the seat rear rod, the seat front rod and the seat rear rod both rotate relative to the seat bottom frame and are folded onto the seat bottom frame, and therefore the seat component is folded, and the baby carriage frame is folded after the seat component is folded. The whole folding process is very convenient and fast, and the folding machine is small in size and convenient to carry.

3. The utility model discloses simple structure, convenient operation, folding back is small, and convenient to carry can be put in car boot or aircraft luggage rack, is fit for popularizing and applying.

[ description of the drawings ]

Fig. 1 is a perspective view of a vehicle frame of the present invention;

FIG. 2 is a side view of the frame of the present invention in an expanded state;

FIG. 3 is a side view of the frame of the present invention during folding;

fig. 4 is a perspective view of the present invention;

FIG. 5 is one of the side views of the seat member of the present invention in the expanded state;

fig. 6 is a second side view of the seat member of the present invention in an expanded state;

FIG. 7 is a side view of the seat member of the present invention during folding;

FIG. 8 is a side view of the seat member of the present invention in a folded condition;

figure 9 is a partial cross-sectional view of the seat component of the present invention;

FIG. 10 is an enlarged view at A in FIG. 9;

figure 11 is a partial cross-sectional view of a component of the present invention;

fig. 12 is a side view of the present invention in an unfolded state;

fig. 13 is a side view of the present invention during folding;

fig. 14 is a side view of the present invention in a folded state.

[ detailed description ] embodiments

The invention will be further described with reference to the accompanying drawings:

as shown in fig. 1 to 4, a stroller, which can move from a deployed position to a folded position after a locking device is unlocked, comprises a frame 1 and a seat member 2 connected to the frame 1, wherein the frame 1 comprises:

the front legs 11, the front legs 11 are connected with front wheels 11 a;

As shown in fig. 1 to 4, when the stroller is folded, the push rod 14 is pushed forward, the upper end of the front stay 13 and the upper end of the rear stay 15 approach the lower end of the rear leg 12, and the lower connecting end 15b of the rear stay 15 tilts during the rotation of the rear stay 15 relative to the rear leg 12, so that the front leg 11 is pulled by the draw bar 16 to be folded toward the rear leg 12, and meanwhile, when the front stay 13 rotates relative to the rear leg 12, the protruding seat 17 applies a certain force to the supporting seat 18, so that the linkage 10 and the supporting seat 18 both rotate relative to the protruding seat 17, and when the supporting seat 18 rotates relative to the protruding seat 17, the seat part 2 connected to the connecting position 19 on the supporting seat 18 moves together with the supporting seat, thereby folding the stroller. When the baby carriage is folded, the locking device is unlocked, and then the hand push rod 14 is pushed forwards and pressed downwards, so that the folding operation is simple, the folded baby carriage is small in size and convenient to carry and store. The locking device of the stroller can adopt a locking structure of a traditional stroller structure, such as a bayonet lock matched with a bayonet slot or a bayonet lock matched with a snap hook, and the details are not repeated herein.

As shown in fig. 1 to 3, the protruding seat 17 extends to the rear side of the stroller, the rear side of the supporting seat 18 is rotatably connected to the rear side of the protruding seat 17, and the linkage 10 is rotatably connected to the front side of the supporting seat 18. Therefore, in the folding process of the baby carriage, the folding is flexible, the clamping stagnation is avoided, and the folding action is convenient and quick.

As shown in fig. 1 and 2, the linkage rod 10, the rear leg 12 and the rear brace 15 are coaxially hinged, so that the stroller is compact in structure and flexible to fold.

As shown in fig. 4 to 8, the seat member 2 includes a seat bottom frame 21 detachably connected to the connecting portion 19, a seat front rod 22 rotatably connected to the lower end of the seat bottom frame 21 is disposed at the front side of the seat bottom frame 21, a seat push rod 23 is rotatably connected to the upper end of the seat front rod 22, the seat front rod 22 is rotatably connected to the seat push rod 23 and is close to the lower end of the seat push rod 23, a seat rear rod 24 rotatably connected to the seat push rod 23 and the seat bottom frame 21 is disposed between the lower end of the seat push rod 23 and the rear side of the seat bottom frame 21, the seat front rod 22, the seat bottom frame 21, the seat rear rod 24 and the seat push rod 23 form a four-bar mechanism capable of being unfolded or folded, and the seat member 2 further includes a locking mechanism for locking the unfolded state of the seat member when the seat member is. The seat underframe 21 is detachably connected with the connecting position 19 on the frame 1, so the seat component 2 can be reversed back and forth, and a user can select the orientation of the seat component 2 according to the requirement, thereby being more humanized. In addition, the seat component 2 is a four-bar mechanism, so that the structure is more stable, the sitting space for infants is larger, the side of the infants in the seat component 2 can be better protected, and the safety is ensured. As shown in fig. 12 to 14, when the stroller is folded, the locking mechanism of the seat member 2 is unlocked, and then the seat push rod 23 is pushed forward so that the upper end of the seat push rod 23 is close to the lower end of the seat front rod 22, and the lower end of the seat push rod 23 pushes the upper end of the seat front rod 22 and the upper end of the seat rear rod 24, so that the seat front rod 22 and the seat rear rod 24 are both rotated relative to the seat bottom frame 21 and folded onto the seat bottom frame 21, thereby folding the seat member 2, and when the frame 1 is folded after the seat member 2 is folded, the seat member 2 which is already in the folded state follows the supporting seat 18. The whole folding process is very convenient and fast, and the folding device is small in size and convenient to carry. The locking mechanism of the seat part 2 may be a conventional locking structure for locking two parts in a mutual rotational relationship in a conventional stroller, such as a locking structure in which a bayonet pin is engaged with a bayonet slot or a locking structure in which a bayonet pin is engaged with a snap hook, which will not be described in detail herein.

As shown in fig. 1, 4 to 10, the connection portion 19 includes a connection groove 191 formed on the support base 18, a horizontal connection shaft 192 is disposed in the connection groove 191, the seat bottom frame 21 includes a seat bottom plate 211, the seat front rod 22 and the seat rear rod 24 are rotatably connected to the seat bottom plate 211, the seat bottom plate 211 is provided with a connection seat 212, the connection seat 212 is provided with an open groove 213 for the connection shaft 192 to be inserted into when the connection seat is inserted into the connection groove 191, the connection seat 212 is further provided with a locking component 25 capable of locking the connection shaft 192 after the connection seat 212 is inserted into the connection groove 191, and further locking the seat member 2 on the frame 1. When the seat part 2 is coupled with the vehicle frame 1, the coupling socket 212 is inserted into the coupling groove 191, the coupling shaft 192 is snapped into the opening groove 213, and the latch assembly 25 locks the coupling shaft in the opening groove 213, thereby keeping the seat part 2 coupled with the vehicle frame 1 stably. When the seat part 2 needs to be reversed back and forth or the seat part 2 needs to be detached, the locking assembly 25 is unlocked, and then the seat part 2 is lifted upwards, so that the operation is very convenient and fast.

As shown in fig. 7 to 10, the locking assembly 25 includes an L-shaped locking lever 251 rotatably connected in the connecting seat 212, one end of the locking lever 251 is provided with a hook 252 capable of hooking the connecting shaft 192 to close and fix the connecting shaft 192 in the opening groove 213, a return spring 253 is disposed between the other end of the locking lever 251 and the connecting seat 212, and the connecting seat 212 is further provided with a pull cable 254 connected with the locking lever 251 and capable of pulling the locking lever 251 to rotate. When the locking assembly 25 is unlocked, the pulling cable 254 is pulled, the pulling cable 254 pulls the locking rod 251 to rotate, the return spring 253 is compressed, the hook 252 on the locking rod 251 does not close the opening groove 213 any more, and the hook 252 does not block the connecting shaft 192 any more, so that the connecting seat 212 can be pulled out from the connecting groove 191 by lifting the seat part 2 upwards, and the operation is simple and rapid.

As shown in fig. 9 and 10, the pulling cable 254 penetrates into the front seat post 22, an operation block 255 exposed outside and rotatable relative to the front seat post 22 is provided on the front seat post 22, and the pulling cable 254 is connected to the operation block 255. When the locking assembly 25 needs to be unlocked, the operation block 255 is pinched by a hand, and the operation block 255 can pull the locking rod 251 to rotate through the pull cable 254 when rotating, so that the locking assembly 25 is unlocked.

As shown in fig. 10, a sliding block 256 is provided in the operating block 255, which can slide relative to the operating block and can abut against the outer side wall of the front seat rod 22 to prevent the operating block 255 from rotating when the seat member 2 is locked to the frame 1, and a leaning spring 257 is provided in the operating block 255 to abut against the sliding block 256. When the seat part 2 is connected to the frame 1, the slider 256 is pushed outwards by the spring 257 and the slider 256 stops on the outer side wall of the front seat bar 22, so that the operating block 255 cannot rotate relative to the front seat bar 22 and the latch assembly 25 cannot be unlocked. Therefore, when the latch assembly 25 needs to be unlocked, the slider 256 is pushed first to make the slider 256 no longer block the outer side wall of the front seat bar 22, then the front seat bar 22 and the operating block 255 are held, and the operating block 255 is pinched to rotate the operating block 255, so that the slider 256 forms a two-way lock to prevent the latch assembly 25 from being unlocked due to misoperation of the operating block 255, and only under the condition that the slider 256 and the operating block 255 are both operated, the latch assembly 25 is unlocked, and safety is ensured.

As shown in fig. 4 to 6, a T-shaped front armrest 3 is detachably connected to the front side of the seat member 2, and the front armrest 3 includes a connecting member 31 capable of being connected to the seat member 2 and an armrest rod 32 capable of rotating relative to the connecting member 31. The grab bar 32 is used for the infant to grab, and the safety is ensured. When the stroller is folded, the grab bar 32 is first folded by rotation, and then the seat member 2 and the frame 1 are folded, ensuring a small space occupied by the stroller in the folded state.

As shown in fig. 4, 5 and 11, the connecting member 31 includes a socket 311, the grab bar 32 is rotatably connected to the socket 311, a latch seat 312 protruding downward is disposed on the front side of the seat member 2, a receptacle 313 into which the socket 311 is inserted is disposed on the latch seat 312, a moving block 314 capable of moving laterally is disposed in the socket 311, a lower protrusion 315 is disposed on the lower side of the moving block 314, a latch hole 316 into which the lower protrusion 315 is latched is disposed on the latch seat 312, an upper protrusion 317 capable of protruding the edge of the receptacle 313 to latch the seat member 2 when the lower protrusion 315 is latched into the latch hole 316 is further disposed on the moving block 314, and a first spring 318 capable of abutting against the moving block 314 is further disposed in the socket 311. When the front armrest 3 needs to be detached, the upper convex block 317 only needs to be pressed, the moving block 314 slides inwards, the first spring 318 is compressed, the lower convex block 315 retreats from the clamping hole 316 when the moving block 314 slides, and the front armrest 3 can be lifted upwards at the moment, so that the plug socket 311 is taken out of the clamping socket 312. When the front armrest needs to be installed, the plug socket 311 is only inserted into the insertion hole 313 of the clamping socket 312, the lower protrusion 315 is clamped into the clamping hole 316, the upper protrusion 317 protrudes outwards to exceed the edge of the insertion hole 313, and then the plug socket 311 is kept in the clamping socket 312 through the cooperation of the upper protrusion 317 and the lower protrusion 315, so that the front armrest 3 is installed firmly and safety is ensured.

Claims

1. Baby carriage, movable from an unfolded position to a folded position after unlocking of a locking device, comprising a frame (1) and a seat part (2) connected to the frame (1), characterized in that: the frame (1) comprises:

the front legs (11), the front wheels (11a) are connected to the front legs (11);

the rear legs (12), the rear wheels (12a) are connected to the rear legs (12), and the rear legs (12) are rotatably connected with the front legs (11);

the lower end of the front support rod (13) is rotatably connected with the upper end of the front leg (11) or the upper end of the rear leg (12);

the upper end of the front support rod (13) is rotatably connected with the upper end of the hand push rod (14) close to the lower end of the hand push rod (14);

the rear support rod (15), the rear support rod (15) is provided with an upper connecting end (15a) and a lower connecting end (15b), the upper connecting end (15a) is rotatably connected with the lower end of the hand push rod (14), and the rear support rod (15) is rotatably connected with the rear leg (12) at a position close to the lower connecting end (15 b);

one end of the traction rod (16) is rotatably connected with the front leg (11), and the other end of the traction rod (16) is rotatably connected with the lower connecting end (15 b);

the protruding seat (17) is fixedly arranged on the front support rod (13) and is close to the lower end of the front support rod (13);

the supporting seat (18), the supporting seat (18) is rotatably connected with the protruding seat (17), and a connecting position (19) for connecting the seat component (2) is arranged on the supporting seat (18);

one end of the linkage rod (10) is rotatably connected with the supporting seat (18), and the other end of the linkage rod (10) is rotatably connected with the rear leg (12) or the rear supporting rod (15).

2. The stroller of claim 1, wherein: the protruding seat (17) extends towards the rear side of the baby carriage, the rear side of the supporting seat (18) is rotatably connected with the rear side of the protruding seat (17), and the linkage rod (10) is rotatably connected with the front side of the supporting seat (18).

3. The stroller of claim 1, wherein: the linkage rod (10), the rear leg (12) and the rear support rod (15) are coaxially hinged.

4. A stroller according to any of claims 1 to 3, wherein: the seat part (2) comprises a seat underframe (21) which can be detachably connected with the connecting position (19), a seat front rod (22) with the lower end rotatably connected with the seat bottom frame (21) is arranged at the front side of the seat bottom frame, a seat push rod (23) is rotatably connected with the upper end of the seat front rod (22), and the seat front rod (22) is rotationally connected with the seat push rod (23) and is close to the lower end position of the seat push rod (23), a seat rear rod (24) which is rotationally connected with the lower end of the seat push rod (23) and the rear side of the seat underframe (21) is arranged between the lower end of the seat push rod and the seat underframe, the seat front rod (22), the seat bottom frame (21), the seat rear rod (24) and the seat push rod (23) form a four-bar linkage mechanism which can be unfolded or folded, the seat part (2) also comprises a locking mechanism for locking the unfolded state of the seat part when the seat part is unfolded.

5. The stroller of claim 4, wherein: connecting position (19) including establishing connecting groove (191) on supporting seat (18), connecting groove (191) in be equipped with horizontal connecting axle (192), seat chassis (21) including seat bottom plate (211), seat front mast (22) and seat back pole (24) rotate and connect on seat bottom plate (211), seat bottom plate (211) on be equipped with connecting seat (212), connecting seat (212) on be equipped with open slot (213) that can supply connecting axle (192) card to go into when it inserts connecting groove (191), connecting seat (212) in still be equipped with and can lock connecting axle (192) after connecting seat (212) insert connecting groove (191), and then with kayser subassembly (25) of seat part (2) locking on frame (1).

6. The stroller of claim 5, wherein: the locking assembly (25) include L shape card lock pole (251) of rotation connection in connecting seat (212), card lock pole (251) one end be equipped with and to catch connecting axle (192) and close connecting axle (192) and fix trip (252) in open slot (213), card lock pole (251) other end and connecting seat (212) between be equipped with reset spring (253), connecting seat (212) in still be equipped with and be connected with card lock pole (251) and can stimulate card lock pole (251) pivoted cable (254).

7. The stroller of claim 6, wherein: the pull cable (254) penetrates into the seat front rod (22), an operation block (255) which is exposed and can rotate relative to the seat front rod (22) is arranged on the seat front rod, and the pull cable (254) is connected to the operation block (255).

8. The stroller of claim 7, wherein: the operating block (255) is internally provided with a sliding block (256) which can slide relative to the operating block and can abut against the outer side wall of the front seat rod (22) to prevent the operating block (255) from rotating when the seat part (2) is locked with the frame (1), and the operating block (255) is internally provided with an abutting spring (257) abutting against the sliding block (256).

9. The stroller of claim 1, wherein: the front side of the seat part (2) is detachably connected with a T-shaped front armrest (3), and the front armrest (3) comprises a connecting part (31) which can be connected with the seat part (2) and an armrest rod (32) which can rotate relative to the connecting part (31).

10. The stroller of claim 9, wherein: the connecting component (31) comprises a plug socket (311), the grab bar (32) is rotationally connected on the plug socket (311), a clamping seat (312) protruding downwards is arranged at the front side of the seat part (2), an insertion hole (313) into which the insertion seat (311) can be inserted is arranged on the clamping seat (312), a moving block (314) capable of moving transversely is arranged in the plug socket (311), a lower convex block (315) is arranged at the lower side of the moving block (314), a clamping hole (316) for the lower convex block (315) to be clamped is arranged on the clamping seat (312), the moving block (314) is also provided with an upper convex block (317) which can protrude out of the edge of the insertion hole (313) to clamp the seat component (2) when the lower convex block (315) is clamped into the clamping hole (316), the socket (311) is also internally provided with a first spring (318) which can be abutted against the moving block (314).