CN213228825U - Folding baby stroller - Google Patents

Abstract

The utility model discloses a folding baby stroller, which comprises a frame, a seat platform, a seat and the like, wherein the frame comprises a front foot group, a rear foot group, a handle group, a front wheel, a rear wheel and the like, and the seat, the frame and the handle group which can be independently folded are mainly designed so as to improve the use safety; moreover, the seat and the seat platform can be folded and gathered in the frame together, so the bicycle has the advantages of small and regular volume, beautiful appearance, convenient storage and carrying and the like; in addition, the handle group can be independently unfolded and extended relative to the folded front foot group and the folded rear foot group, so that the dragging of the folding frame is facilitated, the lifting and moving convenience is facilitated, and the front wheel automatic orientation pin is arranged at the lower end of each front foot group on each side and can lock the front wheel to rotate when the front foot groups and the rear foot groups are folded and closed or unlock the front wheel to rotate when the front foot groups and the rear foot groups are unfolded, so that the front wheel can be prevented from being in a free rotation state when the baby stroller is folded to cause accidental collision and damage on the basis that the front wheel is flexibly rotated and used after the baby stroller is unfolded.

Description

Folding baby stroller

Technical Field

The utility model relates to a baby stroller, in particular to a folding baby stroller.

Background

The baby stroller is a baby product which is pushed by parents and used for a baby to go out and take, and the structure of the baby stroller mainly comprises a frame, a seat platform arranged on the frame, a seat arranged on the seat platform and the like, wherein the frame mainly comprises a front leg group, a rear leg group and a handle group arranged on the rear side, the front leg group and the rear leg group are respectively arranged on two sides of the frame, the lower end of the front leg group on each side of the frame is provided with a front wheel, the lower end of the rear leg group on each side of the frame is provided with a rear wheel, and the baby stroller is often designed into an integrally unfolded or integrally folded structure for convenient use. However, in practice, it has been found that other structural drawbacks exist with such an integrally folded stroller: firstly, the seat and the seat platform can be blocked by the front foot pipe provided with the pedal plate after being folded and can only be gathered at the front side of the front foot group, but can not be wholly gathered in the frame, thus the folded baby stroller has large and irregular volume, difficult appearance and inconvenient collection and carrying; secondly, as the handle group, the front foot group, the rear foot group, the seat platform and the seat are integrally linked and folded, and the operation between every two handle groups and the seat platform cannot be carried out independently, the hidden safety hazard in use is easily caused because one folding joint is not unfolded or folded in place during the unfolding or folding operation of the baby stroller; thirdly, when the baby stroller is integrally folded, the handle group cannot be independently unfolded and extended relative to the folded front foot group and the folded rear foot group, namely the whole folded stroller frame cannot be dragged by the handle group, so that the folded baby stroller is inconvenient to move; and fourthly, after the front wheel set is folded, the whole front wheel is in a free rotation state, and the damage caused by accidental collision is easy to occur.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome prior art's defect and provide one kind have folding small in size regular, the appearance pleasing to the eye, accomodate advantages such as convenient to carry, operation safety in utilization, especially the hand (hold) group can expand the extension alone after the relative folding preceding, back foot group to the convenience is with the help of the hand (hold) group drags the foldable baby's shallow of whole folding frame.

The technical problem of the utility model is realized through following technical scheme:

a foldable baby stroller comprises a frame, a seat platform arranged on the frame and a seat arranged on the seat platform; the frame comprises a front foot set and a rear foot set which are respectively arranged on two sides, and a handle set arranged on the rear side, wherein the lower end of the front foot set on each side is provided with a front wheel, the lower end of the rear foot set on each side is provided with a rear wheel, the upper end of the front foot set on each side is hinged with the upper end of the rear foot set to form a rotary joint, the front foot set and the rear foot set form folding or unfolding around the rotary joint, two sides of the rear part of the seat platform are respectively hinged on the rear foot sets on the two sides, and two sides of the front part of the seat platform are respectively connected on the front foot sets on the two sides through platform locks; the handle group is folded and shortened to be clung to the rear foot group or is unfolded and extended independently relative to the rear foot group; the seat is independently folded and gathered on the seat platform, the platform lock at the front part of the seat platform is unlocked to drive the folded seat to rotate downwards around the rear part of the seat platform together, and then the seat is folded and gathered between the front foot groups at the two sides.

The front leg groups on the two sides are connected through a front leg pipe, the front leg pipe is a U-shaped pipe with a forward opening, and the seat platform drives the folded seat to be folded together and gathered in the U-shaped opening of the front leg pipe.

The handle group comprises handle straight pipes, connecting bent rods and linkage rods which are respectively arranged on two sides, and also comprises an inverted U-shaped handle bent pipe; the upper end of the handle straight pipe on each side is hinged with the lower end of the handle bent pipe on the same side and is provided with a first joint lock, the lower end of the handle straight pipe on each side is hinged with the upper end of the connecting bent rod and is provided with a second joint lock, the middle part of the connecting bent rod on each side is hinged with the upper part of the rear foot set and is provided with a third joint lock, the lower end of the connecting bent rod on each side is hinged with the lower end of the linkage rod, and the upper end of the linkage rod on each side is hinged with the upper part of the front foot set.

The handle bent pipe is provided with a handle button for controlling the unlocking of the first joint lock, the handle bent pipe is folded relative to the handle straight pipe and is folded to be close to unlock the second joint lock, and the handle straight pipe is folded relative to the connecting bent rod and is close to unlock the third joint lock; the handle bent pipe, the handle straight pipe and the connecting bent rod are folded in an N shape.

The platform lock comprises elastic lock pins arranged on two sides of the front part of the seat platform, a platform button arranged at the rear part of the seat platform and lock holes arranged on the front foot sets on the two sides, wherein the elastic lock pins on each side are assembled in the lock holes to form locking of the platform lock or the platform button controls the elastic lock pins on the two sides to synchronously separate from the lock holes to form unlocking of the platform lock.

The rear part of the seat platform is provided with a rotating shaft, and two ends of the rotating shaft are respectively hinged on the rear foot groups at two sides.

The lower end of the front foot set on each side is provided with a front wheel automatic orientation pin, and the front wheel automatic orientation pin is folded and gathered by the front foot set and the rear foot set to lock the rotation of the front wheel or unfolded by the front foot set and the rear foot set to unlock the rotation of the front wheel.

The seat comprises a seat board, a backrest pipe, a shank leaning pipe and an armrest pipe, wherein the lower end of the backrest pipe is hinged to the rear end of the seat board, the upper end of the shank leaning pipe is hinged to the front end of the seat board, and the rear end of the armrest pipe is hinged to the front portion of the seat board.

The top of the backrest pipe is provided with a backrest wrench for unlocking the backrest pipe to fold and close relative to the seat board.

The handle elbow is provided with two locks for controlling the operation of the handle button, and the rear part of the seat platform is provided with two locks for controlling the operation of the platform button.

Compared with the prior art, the utility model mainly hinges the two sides of the back part of the seat platform of the installation seat on the back foot groups at the two sides respectively, and the two sides of the front part of the seat platform are connected on the front foot groups at the two sides through the platform lock respectively; the handle group with a unique structure is designed, namely the handle group is folded and shortened to be attached to the rear foot group or is independently unfolded and extended relative to the rear foot group, and the handle group can also synchronously drive the front foot group and the rear foot group to be folded and closed when being folded and shortened; meanwhile, the seat is independently folded and gathered on the seat platform, the platform lock at the front part of the seat platform is unlocked, and then the folded seat is driven to rotate downwards around the rear part of the seat platform together, and then the seat is folded and gathered between the front foot groups at the two sides. Therefore, by the folding structure with the separated operation, the hidden use safety hazard caused by that one folding joint is not unfolded or folded in place can be avoided; moreover, the seat and the seat platform are folded and gathered between the front foot sets at the two sides together, which is substantially folded and gathered in the folding frame, so that the folded baby stroller has small and regular volume, beautiful appearance and convenient storage and carrying; in addition, after the handle group is independently unfolded and extended relative to the folded front foot group and the folded rear foot group, the whole folding frame can be conveniently dragged by means of the handle group, so that the moving convenience of the folded baby stroller is improved, and the front wheel with a novel structure is designed.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a perspective view of fig. 1.

Fig. 3 is a schematic view of the stroller in a deployed use position.

Fig. 4 is a schematic view showing a structure in which a back tube of a seat is folded and gathered on a seat plate.

Fig. 5 is a schematic view showing the structure that the seat is folded and gathered on the seat platform.

Fig. 6 is a schematic structural view of the handle bent tube folded relative to the handle straight tube.

Fig. 7 is a schematic view of the folding structure of the straight handle tube relative to the connecting bent rod.

Fig. 8 is a schematic structural view of the handle set in an N-fold configuration.

Fig. 9 is a schematic view of the structure in which the seating platform and the seat are folded together.

Fig. 10 is a sectional structural view of the front wheel automatic locking.

Fig. 11 is a schematic view of the stroller shown in a collapsed configuration.

Fig. 12 is a schematic structural view of the operation handle group which is separately unfolded and extended relative to the rear foot group so as to facilitate towing of the folding bicycle frame.

Fig. 13 is a cross-sectional structural view at a seating platform.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in fig. 1 to 13, the bicycle comprises a bicycle frame 1, a front foot group 11, a front wheel 111, a front wheel 112, a lock hole 113, a front wheel automatic orientation pin 12, a rear foot group 121, a rear wheel 13, a rotary joint 14, a front foot pipe, a seat platform 2, a seat 3, a seat board 31, a backrest pipe 32, a lower leg backrest pipe 33, a handrail pipe 34, a ceiling frame 35, a backrest wrench 36, a handle group 4, a handle straight pipe 41, a connecting bent rod 42, a linkage rod 43, a handle bent pipe 44, a first joint lock 45, a second joint lock 46, a third joint lock 47, a handle button 48, a platform lock 5, an elastic lock pin 51, a platform button 52, a rotating shaft 53 and a second joint lock 6.

A foldable baby stroller, as shown in fig. 1, mainly relates to a baby product which is pushed by parents and used for a baby to go out, and the structure of the foldable baby stroller is composed of a frame 1, a seat platform 2 arranged on the frame and a seat 3 arranged on the seat platform; the bicycle frame 1 comprises a front foot set 11 and a rear foot set 12 which are respectively arranged at two sides, and a handle set 4 arranged at the rear side, wherein the lower end of the front foot set 11 at each side is provided with a front wheel 111, the lower end of the rear foot set 12 at each side is provided with a rear wheel 121, the upper end of the front foot set 11 at each side is hinged with the upper end of the rear foot set 12 to form a rotary joint 13, and the front foot set 11 and the rear foot set 12 can be folded or unfolded around the rotary joint 13.

Two sides of the rear part of the seat platform 2 are respectively hinged on the rear foot groups 12 at two sides, and two sides of the front part of the seat platform 2 are respectively connected on the front foot groups 11 at two sides through the platform lock 5.

By designing the seat 3 and the seat platform 2, the seat can be mounted at a higher height, i.e. the seat 3 can be higher away from the ground, so that the seated baby has a wider visual field, is farther away from the ground due to dust, and is more close to parents and convenient to take care of.

The seat 3 comprises a seat plate 31, a backrest pipe 32, a lower leg rest pipe 33, an armrest pipe 34 and a ceiling frame 35, wherein the lower end of the backrest pipe 32 is hinged at the rear end of the seat plate 31, the upper end of the lower leg rest pipe 33 is hinged at the front end of the seat plate 31, and the rear end of the armrest pipe 34 is hinged at the front part of the seat plate 31. And the top of the backrest tube 32 is provided with a backrest wrench 36 for unlocking the folding and folding of the backrest tube relative to the seat plate 31, so that the folding of the seat 3 is that the backrest tube 32 drives the armrest tube 34 and the ceiling frame 35 to be folded and folded together on the seat plate 31, and the leg rest tube 33 is also folded and folded together on the seat plate 31.

The hinge structure at the two sides of the rear portion of the seat platform 2 is a structure in which a rotating shaft 53 is arranged at the rear portion of the seat platform 2, specifically, the rotating shaft 53 is arranged at the rear portion of the seat plate 31, and the two ends of the rotating shaft are respectively hinged to the rear leg groups 12 at the two sides, so that the front portion of the seat platform 2 rotates downward around the rear rotating shaft 53.

The platform lock 5 comprises elastic lock pins 51 respectively arranged at two sides of the front part of the seat platform 2 and a platform button 52 arranged at the rear part of the seat platform 2, and also comprises lock holes 112 respectively arranged on the front foot groups 11 at two sides, the elastic lock pins 51 at each side are assembled in the lock holes 112 to form locking of the platform lock 5, or the platform button 52 controls the elastic lock pins 51 at two sides to synchronously separate from the lock holes 112 to form unlocking of the platform lock 5; the back of the seat platform 2 is also provided with a secondary lock 6 for controlling the operation of the platform button 52, which plays the role of safely operating the platform button 52.

Seat 3 fold alone and close together on seat platform 2, the anterior platform lock 5 unblock of this seat platform and drive seat 3 after folding jointly around seat platform 2 rear portion downwardly turned, and then fold and close together between the preceding leg group 11 of both sides, its essence is folding and close together in folding frame, this is because be equipped with preceding leg pipe 14 between the preceding leg group 11 of both sides and link to each other, this preceding leg pipe is an opening U type pipe forward, when seat platform 2 drives seat 3 after folding and folds together, just in time coincide to join in marriage in the U type opening of preceding leg pipe 14, thereby make the baby's folding back small in size regular, the appearance is pleasing to the eye, accomodate convenient to carry.

Meanwhile, the lower end of the front foot group 11 at each side is provided with a front wheel automatic orientation pin 113, the front wheel automatic orientation pin can lock the front wheel 112 to rotate by folding and folding the front and rear foot groups or unlock the front wheel 112 to rotate by unfolding the front and rear foot groups, and can be automatically locked only when the front wheel 112 is positioned in the direction parallel to the frame 1, so that the front wheel 111 can be effectively prevented from being damaged by accidental collision due to the fact that the front wheel 111 is in a free rotation state when the baby stroller is folded on the basis of not influencing the flexible rotation of the unfolded baby stroller and using the front wheel 111.

In particular, the folded front wheel 111 is locked, which not only enables miniaturization of the folded volume, but also facilitates stable standing and flexible towing after folding.

The handle group 4 comprises a handle straight pipe 41, a connecting bent rod 42 and a linkage rod 43 which are respectively arranged at two sides, and also comprises an inverted U-shaped handle bent pipe 44; the upper end of the handle straight pipe 41 at each side is hinged with the lower end of the handle bent pipe 44 at the same side and is provided with a first joint lock 45, the lower end of the handle straight pipe 41 at each side is hinged with the upper end of the connecting bent rod 42 and is provided with a second joint lock 46, the middle part of the connecting bent rod 42 at each side is hinged with the upper part of the rear foot group 12 and is provided with a third joint lock 47, the lower end of the connecting bent rod 42 at each side is hinged with the lower end of the linkage rod 43, and the upper end of the linkage rod 43 at each side is hinged with the upper part of the front foot group 11; at this time, the connecting bent rod 42 and the linkage rod 43 connected form just one upper hook.

The handle elbow 44 is provided with a handle button 48 for controlling the unlocking of the first joint lock 45 and a secondary lock 6 for controlling the operation of the handle button, and the secondary lock can play a role in safely operating the handle button 48; the handle bent pipe 44 is folded and folded relative to the handle straight pipe 41 and unlocks the second joint lock 46, the handle straight pipe 41 is folded and folded relative to the connecting bent rod 42 and unlocks the third joint lock 47, and the unlocking of the second joint lock 46 or the third joint lock 47 is automatically triggered when the handle bent pipe 44 or the handle straight pipe 41 is folded to a certain angle; thus, the handle bent tube 44, the handle straight tube 41 and the connecting bent rod 42 can be folded in an N shape, that is, the folding and shortening of the handle set 4 can synchronously unlock the third joint lock 47, and the front leg set 11 and the rear leg set 12 can be folded and gathered.

Obviously, the handle group 4 adopts a linked unlocking mechanism, and the unlocking and folding of the ring buckle not only realizes the minimization of the volume, but also ensures the unlocking accuracy of each link, and finally realizes the folding of the front and rear foot groups. The connecting bent rod 42, the linkage rod 43, the front leg set 11 and the rear leg set 12 just form a four-bar linkage mechanism, and when the connecting bent rod 42 and the rear leg set 12 are unfolded for use, a stable supporting triangle can be formed by locking the third joint lock 47 between the connecting bent rod 42 and the rear leg set 12.

Therefore, by adopting the handle group 4 with unique structure, the handle group can be folded, shortened and clung to the rear foot group 12 or independently unfolded and extended relative to the rear foot group, and after the handle group 4 is independently unfolded and extended relative to the folded front and rear foot groups, the whole folding frame can be conveniently dragged by means of the handle group 4, thereby improving the convenience of moving the folded baby stroller.

The utility model discloses a normal folding order is usually: firstly, the seat 3 is folded on the seat platform 2, then the handle group 4 is folded, the frame 1 is unlocked, then the seat platform 2 is folded, the seat 3 is driven to rotate downwards to be folded together by unlocking the seat platform, simultaneously, the rear end of the seat platform 2 only needs to be held and lifted upwards, the front foot group and the rear foot group are driven to be folded and gathered by utilizing the natural weight of the baby stroller, and finally the seat 3 and the seat platform 2 are folded and gathered in the frame 1 together.

The above description is only an embodiment of the present invention, and those skilled in the art should understand that any structural design similar to the embodiment is included in the protection scope of the present invention.

Claims (10)

1. A foldable baby stroller comprises a frame (1), a seat platform (2) mounted on the frame, and a seat (3) mounted on the seat platform; the bicycle frame (1) comprises a front foot set (11) and a rear foot set (12) which are respectively arranged on two sides, and a handle set (4) arranged on the rear side, wherein the lower end of the front foot set (11) on each side is provided with a front wheel (111), the lower end of the rear foot set (12) on each side is provided with a rear wheel (121), the upper end of the front foot set (11) on each side is hinged with the upper end of the rear foot set (12) to form a rotating joint (13), and the front foot set (11) and the rear foot set (12) form folding or unfolding around the rotating joint (13), and the bicycle frame is characterized in that the two sides of the rear part of the seat platform (2) are respectively hinged on the rear foot sets (12) on the two sides, and the two sides of the front part of the seat platform (2) are respectively connected on the front foot sets (11); the handle group (4) is folded and shortened to be clung to the rear foot group (12) or is independently unfolded and extended relative to the rear foot group (12); the seat (3) is independently folded and gathered on the seat platform (2), the platform lock (5) at the front part of the seat platform is unlocked to drive the folded seat (3) to rotate downwards around the rear part of the seat platform (2) together, and then the seat is folded and gathered between the front foot groups (11) at the two sides.

2. A collapsible stroller according to claim 1, wherein said side leg assemblies (11) are connected by a leg tube (14) which is a U-shaped tube with a forward opening, said seat platform (2) carrying said collapsed seat (3) together to collapse in said U-shaped opening of said leg tube (14).

3. The foldable stroller of claim 1, wherein said handle set (4) comprises a straight handle tube (41), a connecting bent rod (42) and a linkage rod (43) respectively disposed at two sides, and further comprises an inverted U-shaped handle bent tube (44); the upper end of the handle straight pipe (41) on each side is hinged with the lower end of the handle bent pipe (44) on the same side and is provided with a first joint lock (45), the lower end of the handle straight pipe (41) on each side is hinged with the upper end of the connecting bent rod (42) and is provided with a second joint lock (46), the middle part of the connecting bent rod (42) on each side is hinged with the upper part of the rear foot group (12) and is provided with a third joint lock (47), the lower end of the connecting bent rod (42) on each side is hinged with the lower end of the linkage rod (43), and the upper end of the linkage rod (43) on each side is hinged with the upper part of the front foot group (11).

4. The foldable stroller of claim 3, wherein the handle elbow (44) is provided with a handle button (48) for controlling the unlocking of the first joint lock (45), the handle elbow (44) is folded and folded relative to the handle straight tube (41) to unlock the second joint lock (46), and the handle straight tube (41) is folded and folded relative to the connecting bent rod (42) to unlock the third joint lock (47); the handle bent pipe (44), the handle straight pipe (41) and the connecting bent rod (42) are folded in an N shape.

5. A pushchair of foldable type as claimed in claim 4, wherein said platform lock (5) comprises elastic lock pins (51) respectively disposed on both sides of the front part of the seat platform (2) and a platform button (52) disposed on the rear part of the seat platform (2), and further comprises lock holes (112) respectively disposed on the front leg groups (11) on both sides, the elastic lock pins (51) on each side are fitted in the lock holes (112) to form locking of the platform lock (5) or the platform button (52) controls the elastic lock pins (51) on both sides to synchronously disengage from the lock holes (112) to form unlocking of the platform lock (5).

6. A collapsible stroller according to claim 1, wherein said seat platform (2) is provided at a rear portion thereof with a pivot (53) having opposite ends respectively hinged to said rear leg assemblies (12).

7. A collapsible stroller according to claim 1, wherein the lower end of the front leg assembly (11) of each side is provided with a front wheel automatic orientation pin (113) which locks the rotation of the front wheel (111) when the front and rear leg assemblies are collapsed or unlocks the rotation of the front wheel (111) when the front and rear leg assemblies are expanded.

8. A collapsible stroller according to claim 1, wherein said seat (3) comprises a seat plate (31), a backrest tube (32), a lower leg rest tube (33) and an arm rest tube (34), said backrest tube (32) being pivotally connected at a lower end thereof to a rear end of said seat plate (31), said lower leg rest tube (33) being pivotally connected at an upper end thereof to a front end of said seat plate (31), said arm rest tube (34) being pivotally connected at a rear end thereof to a front portion of said seat plate (31).

9. A pushchair according to claim 8, wherein the backrest tube (32) is provided at the top with a backrest key (36) for unlocking the folding of the tube relative to the seat plate (31).

10. A collapsible stroller in accordance with claim 5 in which said handle elbow (44) is provided with a secondary lock (6) for operating said handle button (48) and said seat platform (2) is provided at the rear thereof with a secondary lock (6) for operating said platform button (52).

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