CN110723191A

CN110723191A - Folding children's barrow

Info

Publication number: CN110723191A
Application number: CN201910521047.5A
Authority: CN
Inventors: 马福生; 张兴荣; 张阳
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2018-09-29
Filing date: 2019-06-17
Publication date: 2020-01-24

Abstract

The invention discloses a folding baby stroller, which comprises an openable and foldable frame, and a front wheel and a rear wheel which are connected to the bottom of the frame, wherein the frame comprises a push rod, a front support and a rear support, the bottom of the front support is connected with the front wheel, the bottom of the rear support is connected with the rear wheel, any two of the push rod, the front support and the rear support are mutually rotatably connected, the rest one of the push rod, the front support and the rear support is rotatably connected with at least one of the two supports, when the frame is in an opened state, the push rod, the front support and the rear support are relatively unfolded, wheel shafts of the front wheel and the rear wheel extend in the left-right direction, when the frame is in a folded state, the push rod, the front support and the rear support are mutually closed, and the front. This folding children's shallow, whole car is after accomplishing folding, and is flat, and the volume is very little, can stand by oneself moreover, simple structure, thinks about exquisitely, convenient operation.

Description

Folding children's barrow

Technical Field

The invention relates to a folding baby stroller.

Background

Folding stroller vehicles are widely used as baby transportation tools. The folding stroller is convenient to fold, small in size after being folded, easy to store and convenient to carry, and meets the use requirements of consumers on the folding stroller. A foldable stroller in the prior art generally includes a foldable frame, wheels mounted below the frame, a locking device capable of locking the frame in an open state, and a seat bag mounted on the frame for a baby to sit on. The existing folding baby stroller is large in size after being folded, and occupies large space when being carried and stored.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a foldable stroller, which is more flat and smaller after being folded.

In order to achieve the above purposes, the invention adopts the technical scheme that: the utility model provides a folding children's shallow, including can opening with folding frame, connect front wheel and the rear wheel in the frame bottom, the frame includes the push rod, the fore-stock of front wheel is connected to the bottom, the after-poppet of rear wheel is connected to the bottom, the push rod, the fore-stock, arbitrary two rotation in the after-poppet are connected, and all the other one is connected with at least one looks rotation in two, when the frame is in the open mode, the push rod, the fore-stock, expand relatively between the after-poppet, when the frame is in fold condition, the push rod, the fore-stock, the after-poppet is drawn close each other, front wheel and rear wheel all overturn to the shaft and extend along the fore-and-aft direction.

Further, the frame also comprises

The upper push rod is rotatably connected with the upper part of the push rod;

the upper part of the upper connecting rod is rotationally connected with the lower part of the upper push rod, and the upper connecting rod is rotationally connected with the rear bracket;

the front part of the front connecting rod is rotationally connected with the front bracket;

the front part of the rear connecting rod is rotationally connected with the front connecting rod, and the rear part of the rear connecting rod is rotationally connected with the rear support;

and the lower sliding sleeve can be connected to the rear connecting rod in a sliding manner along the length direction of the rear connecting rod, and the lower part of the upper connecting rod is rotatably connected with the lower sliding sleeve.

Furthermore, a first wheel turning mechanism is arranged between the front support and the front wheel, a second wheel turning mechanism is arranged between the rear support and the rear wheel, and the first wheel turning mechanism and the second wheel turning mechanism both act and respectively turn over the front wheel and the rear wheel in the process of transition of the frame from the opening state to the folding state.

Further, at least one of the first wheel turnover mechanism and the second wheel turnover mechanism comprises a wheel joint which is connected with the front support or the rear support in a relatively pivoting and relatively sliding manner and is provided with a spiral groove, a driving rod which is arranged on the front support or the rear support and is connected with the spiral groove in a relatively sliding manner, and a driving part which drives the driving rod to move through folding of the frame and can drive the wheel joint to slide, wherein the front wheel or the rear wheel is arranged on the wheel joint.

Optionally, at least one of the first wheel turnover mechanism and the second wheel turnover mechanism comprises a wheel joint pivotally connected with the front support or the rear support and provided with a spiral groove, a drive rod connected with the spiral groove in a manner that the end part can slide relatively, and a first connecting piece connected with the drive rod, wherein the first connecting piece is rotationally connected with the front connecting rod or the rear connecting rod, and the front wheel or the rear wheel is arranged on the wheel joint.

Optionally, two front wheels or two rear wheels are symmetrically arranged on the left side and the right side of the foldable stroller, two wheel joints are symmetrically arranged on the left side and the right side of the foldable stroller, the front wheels or the rear wheels are mounted on the wheel joints on the same side of the front wheels or the rear wheels, and the left end portion and the right end portion of the driving rod are respectively in sliding connection with the spiral grooves on the wheel joints on the left side and the right side. Furthermore, the two first connecting pieces are symmetrically arranged on the left side and the right side of the folding stroller, and the two first connecting pieces are fixedly connected through the transverse connecting piece. Furthermore, a second connecting piece is fixed on the front connecting rod or the rear connecting rod, and the first connecting piece is rotatably connected to the second connecting piece.

Further, the lower end of the spiral groove is communicated with a fixing groove, when the frame is in an open state, the end part of the driving rod is connected in the fixing groove, and the front wheel or the rear wheel is kept to extend along the left-right direction at the wheel axle.

Further, the first turnover mechanism and the second turnover mechanism are identical in structure and are symmetrically arranged on the front side and the rear side of the folding stroller.

Furthermore, the lower part of the push rod, the upper part of the front bracket and the upper part of the rear bracket are coaxially and rotatably connected.

Further, the frame also comprises

The front part of the seat rod is rotationally connected with the rear support, and the rear part of the seat rod is rotationally connected with the upper connecting rod;

a seat plate connected with the seat rod in a sliding manner;

the front part of the pull rod is rotationally connected with the seat board, and the rear part of the pull rod is rotationally connected with the upper connecting rod.

Furthermore, the two rear supports are symmetrically arranged on the left side and the right side of the folding baby stroller, a rear cross rod is fixedly connected between the two rear supports, and the front part of the seat rod is rotatably connected to the rear cross rod.

The application also provides another technical scheme: the utility model provides a folding children's shallow, including can opening with folding frame, connect front wheel and the rear wheel in the frame bottom, the frame includes the push rod, the fore-stock of front wheel is connected to the bottom, the after-poppet of rear wheel is connected to the bottom, the push rod, the fore-stock, arbitrary two mutual rotations in the after-poppet are connected, and all the other one rotates with at least one in two mutually to be connected, between front wheel and the fore-stock, all through wheel joint connection between rear wheel and the after-poppet, when the frame is folded up to fold condition from the open condition, wheel joint rotates the degree respectively on fore-stock and after-poppet along with the folding of frame, and the front wheel draws close each other with the rear wheel that corresponds.

Preferably, the frame further comprises a plurality of bars, the front and rear wheels being in contact with the ground when the frame is in the folded condition, and the push rod or at least one of the plurality of bars also being in contact with the ground, so that the foldable stroller is self-supporting.

By adopting the technical scheme, the foldable baby stroller is flat after the whole stroller is folded, has very small volume, can stand by itself, and is simple in structure, exquisite in conception and convenient to operate.

Drawings

Fig. 1 is a side view of a foldable stroller in a first embodiment in an unfolded state;

fig. 2 is a schematic perspective view of the foldable stroller in the first embodiment in an unfolded state;

FIG. 3 is a schematic side view of the foldable stroller in the first embodiment during folding;

fig. 4 is a schematic perspective view of the foldable stroller in the first embodiment during the folding process;

FIG. 5 is a schematic view of a portion of the structure of FIG. 4;

FIG. 6 is a side view of the folding stroller in the first embodiment in a folded position;

fig. 7 is a front view of the foldable stroller in the first embodiment in a folded state;

fig. 8 is a schematic perspective view of the foldable stroller in the first embodiment in a folded state;

fig. 9 is a schematic side view of the first wheel turning structure or the second wheel turning structure according to the second embodiment;

fig. 10 is a schematic front view of the first wheel turning structure or the second wheel turning structure according to the second embodiment;

fig. 11 is a schematic structural view of a foldable stroller in a third embodiment;

fig. 12 is a schematic structural view of a foldable stroller in accordance with a fourth embodiment;

FIG. 13 is a schematic structural view of the foldable stroller in the fifth embodiment;

fig. 14 is a schematic structural view of the folding stroller in the sixth embodiment.

The reference numbers in the figures are:

1. a push rod is arranged; 2. a lower push rod; 3. an upper connecting rod; 4. a front bracket; 5. a rear bracket; 6. a front link; 7. a rear connecting rod; 8. a lower sliding sleeve; 9. a front wheel; 10. a rear wheel; 11. a seat post; 12. a seat plate; 13. a pull rod; 14. a rear cross bar; 15. a front cross bar; 16a, a front wheel joint; 16b, a rear wheel joint; 17a, a front spiral groove; 18a, a front drive rod; 18b, a rear drive rod; 19a, a front first connecting piece; 19b, a rear first connecting piece; 20a, a front second connector; 20b, a rear second connector; 21a, a front fixing groove; 22a, a front transverse connecting rod; 23. a joint; 24. a seat pocket joint; 25. a seat pocket; 26. a handrail; 27. a drive section.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the invention may be more readily understood by those skilled in the art.

Example one

As can be seen from the schematic structural views of fig. 1 to 8, the folding stroller of the present embodiment includes a frame that can be unfolded and folded, a front wheel 8 and a rear wheel 10 connected to the bottom of the frame, and a locking device for locking the frame in an unfolded state.

The frame includes push rod 2, front support 4 of front wheel 9 is connected to the bottom, rear support 5 of rear wheel 10 is connected to the bottom, push rod 2, front support 4, arbitrary two in the rear support 5 rotate each other and connect, and all the other one rotate with two in at least one and be connected, when the frame is at the open mode, push rod 2, front support 4, relative expansion between rear support 5, the shaft of front wheel 9 and rear wheel 10 all extends along left right direction, when the frame is at fold condition, push rod 2, front support 4, rear support 5 draws close each other, front wheel 9 and rear wheel 10 all overturn to the shaft and extend along the fore-and-aft direction.

In the embodiment, a frame structure is provided, which comprises an upper push rod 1, an upper connecting rod 3, a front connecting rod 6, a rear connecting rod 7 and a lower sliding sleeve 8 in addition to the push rod 2, the front support 4 and the rear support 5.

The upper push rod 1 is rotatably connected with the upper part of the push rod 2 through a rotating shaft a.

The upper part of the upper connecting rod 3 is rotatably connected with the lower part of the upper push rod 1 through a rotating shaft b. In this embodiment, the rotating shaft b is located below the rotating shaft a. The upper connecting rod 3 is rotatably connected with the rear bracket 5 through a rotating shaft c. The upper part of the rear bracket 5, the upper part of the front bracket 4 and the lower part of the push rod 2 are rotationally connected through the same rotating shaft d. In this embodiment, the rotation axis c is located below the rotation axes b and d.

The front part of the front connecting rod 6 is rotatably connected with the front bracket 4 through a rotating shaft h, and the rotating shaft h is positioned between the rotating shaft d and the front wheel 9 in the embodiment.

The front part of the rear connecting rod 7 is rotatably connected with the front connecting rod 6 through a rotating shaft g, and the rear part of the rear connecting rod 7 is rotatably connected with the rear bracket 5 through a rotating shaft e, in this embodiment, the rotating shaft e is located between the rotating shaft c and the rear wheel 1, that is, the rotating shaft c is located between the rotating shaft d and the rotating shaft e.

The lower sliding sleeve 8 can be connected on the rear connecting rod 7 along the length direction of the rear connecting rod 7 in a sliding manner, in the embodiment, the lower sliding sleeve 8 slides between the rotating shaft g and the rotating shaft e, when the frame is in an opening state, the lower sliding sleeve 8 is close to the rotating shaft e, and when the frame is in a folding state, the lower sliding sleeve 8 is close to the rotating shaft g. The lower part of the upper link 3 is rotatably connected to the lower sliding sleeve 8 through a rotating shaft f, which is located below the rotating shaft c in this embodiment, i.e. the rotating shaft c is located between the rotating shaft b and the rotating shaft f.

The upper push rod 1, the push rod 2, the upper connecting rod 3 and the rear bracket 5 form a first four-bar linkage; the rear bracket 5, the upper connecting rod 3, the rear connecting rod 7 and the lower sliding sleeve 8 form a crank-slider mechanism which is linked with the first four-bar linkage; the rear bracket 5, the rear connecting rod 7, the front bracket 4 and the front connecting rod 6 form a second four-bar linkage mechanism which is linked with the first four-bar linkage mechanism and the slider-crank mechanism.

In a more preferred embodiment, the frame further comprises a seat post 11 with a front portion pivotally connected to the rear bracket 5 and a rear portion pivotally connected to the upper link 3, a seat plate 12 slidably connected to the seat post 11 in a fore-and-aft direction, and a tie rod 13 with a front portion pivotally connected to the seat plate 12 and a rear portion pivotally connected to the upper link 3. Preferably, the connection point of the seat post 11 and the upper link 3 is located between the rotation axis b and the rotation axis c.

In this embodiment, the upper push rod 1, the push rod 2, the upper connecting rod 3, the front bracket 4, the rear bracket 5, the front connecting rod 6, the rear connecting rod 7, the lower sliding sleeve 8, the front wheel 9, the rear wheel 10, the seat post 11 and the pull rod 13 are symmetrically arranged on the left side and the right side of the frame. A fixed front cross bar 15 is connected between the left and right front frames 4, a rear cross bar 14 is connected between the left and right rear frames 5, and the front portion of the seat bar 11 is pivotally connected to the rear cross bar 14.

In a more preferred embodiment, the lengths of the push-up rod 1, the push-up rod 2, the upper connecting rod 3, the front bracket 4 and the rear bracket 5 are close to make the frame more square and flat after being folded.

In a more preferred embodiment, in order to make the foldable stroller self-supporting when the frame is folded, at least one rod of the frame is in contact with the ground while the front and

rear wheels

9 and 10 are in contact with the ground, so as to make the foldable stroller self-supporting stably. In the embodiment, the upper connecting rod 3 is contacted with the ground when the folding state is adopted, and the upper push rod 1 or the push rod 2 can be contacted with the ground.

The locking device may adopt a structure in the prior art, and the unlocking operation member of the locking device in this embodiment is disposed on the push handle above the upper push rod 1, and since the locking device is not the invention of the present application, it is not shown in the drawings and will not be described in detail here.

Be provided with first wheel tilting mechanism between fore-stock 4 and front wheel 9, be provided with second wheel tilting mechanism between rear bracket 5 and the rear wheel 10, at the frame from the in-process of opening state to fold condition transition, first wheel tilting mechanism and second wheel tilting mechanism all move and make front wheel 9 and rear wheel 10 upset respectively.

The first wheel turnover mechanism and the second wheel turnover mechanism can be different in structure and can also be the same in structure, and in the embodiment, the first wheel turnover mechanism and the second wheel turnover mechanism are basically the same in structure and are symmetrically arranged on the front side and the rear side of the foldable stroller.

The structure will be described by taking as an example a first wheel turning mechanism including a front wheel joint 16a pivotally connected to the front frame 4 and having a front spiral groove 17a, a front drive lever 18a connected to the front spiral groove 17a with an end portion thereof being relatively slidable, and a front first link 19a connected to the front drive lever 18a, the front first link 19a being rotatably connected to the front link 6, and the front wheel 9 being mounted on the front wheel joint 16 a. The front driving rod 18a and the front first connecting piece 19a can be connected in a rotating way or can be fixedly connected, and when the front driving rod 18a and the front first connecting piece are fixedly connected, the front driving rod 18a can rotate by taking the axis line of the front driving rod as the axis line in the process of sliding along the front spiral groove 17 a.

Specifically, the front wheel joints 16a are provided at the bottom of two front brackets 4 symmetrically connected to the left and right sides of the foldable stroller, and the two front wheels 9 are respectively mounted on the front wheel joints 16a on the same side. The front driving rod 18a may be designed as two on the left and right sides of the foldable stroller, or as in the present embodiment, there may be one front driving rod 18a, and the left and right ends thereof are slidably connected with the front spiral grooves 17a on the left and right front wheel joints 16a, respectively.

Correspondingly, the front first connecting members 19a are also two symmetrically arranged at the left and right sides of the foldable stroller, and preferably, the two front first connecting members 19a are fixedly connected with each other by a front cross-connecting member 22a, in this embodiment, the front cross-connecting member 22a is a front pedal of the foldable stroller, and when a child sits on the seat plate 12, the front pedal can be used for the child to put feet on.

In this embodiment, a front second connecting member 20a is fixed to the front link 6, the front second connecting member 20a is connected to the front portion of the front link 6, and the front first connecting member 19a is rotatably connected to the front second connecting member 20 a.

In a more preferred embodiment, the lower end of the front spiral groove 17a communicates with a front fixing groove 21a, and when the frame is in an open state, the end of the front drive rod 18a slides into and connects with the front fixing groove 21a from the front spiral groove 17a, so that the front wheel 9 is held with its axle extending in the left-right direction.

The second wheel turning mechanism in this embodiment includes a rear wheel joint 16b pivotally connected to the rear bracket 5 and having a rear spiral groove (not shown in the drawings), a rear drive rod 18b connected to the rear spiral groove so as to be slidable relative thereto at an end portion thereof, and a rear first link 19b connected to the rear drive rod 18b, the rear first link 19b being rotatably connected to the rear link 7, and the rear wheel 10 being mounted on the rear wheel joint 16 b. The rear driving rod 18b and the rear first connecting member 19b may be connected in a rotatable manner or in a fixed manner.

Specifically, the rear wheel joints 16b are provided with two rear brackets 5 which are symmetrically connected to the left and right sides of the foldable stroller, and the two rear wheels 9 are respectively mounted on the rear wheel joints 16b on the same side. The rear driving rods 18b may be designed as two on the left and right sides of the foldable stroller, or as in the present embodiment, there may be one rear driving rod 18b, and the left and right ends thereof are slidably connected to the rear spiral grooves of the rear wheel connectors 16b on the left and right sides, respectively. Accordingly, the rear first link 19b also has two symmetrically disposed at the left and right sides of the folding stroller. In this embodiment, the rear link 7 is fixed with a rear second connecting member 20b, the rear second connecting member 20b is connected to the rear portion of the rear link 7, and the rear first connecting member 19b is rotatably connected to the rear second connecting member 20b, but the second wheel turning mechanism in this embodiment is different from the first wheel turning mechanism in that there is no cross-connecting member between the two second connecting members 20 b.

In a more preferred embodiment, the lower end of the rear spiral groove communicates with a rear fixing groove (not shown in the drawings) into which the end of the rear drive rod 18b slides and is coupled when the frame is in the open state, so that the rear wheel 10 is held with its axle extending in the left-right direction. The folding working principle of the cart is as follows:

when the cart is folded, the locking device is unlocked, the upper push rod 1 is rotated forwards and downwards to drive the push rod 2 and the upper connecting rod 3 to move downwards to be drawn to the rear support 5, the first four-bar linkage mechanism is folded, and the upper push rod 1 and the push rod 2 are drawn to the rear support 5 from the rear of the rear support 5. While the first four-bar linkage is folded, the seat bar 11 and the pull bar 13 are driven to rotate, and the seat plate 12 slides backwards along the seat bar 11. The lower end of the upper push rod 1 rotates backwards to drive the upper end of the upper connecting rod 3 to rotate backwards, so that the lower end of the upper connecting rod 3 rotates forwards, the lower sliding sleeve 8 slides forwards along the rear connecting rod 7, the front part of the rear connecting rod 7 rotates upwards to be drawn close to the rear support 5, and the slider-crank mechanism is accordingly folded in a linkage mode. The front bracket 4 and the front connecting rod 6 are rotated to be close to the rear bracket 5 under the driving of the push rod 2 and the rear connecting rod 7, and the second four-bar linkage mechanism is accordingly linked and folded;

when the front connecting rod 3 rotates, the front connecting rod 6 is driven to rotate, the front connecting rod 6 drives the front first connecting piece 19a to rotate through the front second connecting piece 20a, the front driving rod 18a is driven to move upwards, the end part of the front driving rod 18a is separated from the front fixing groove 21a, enters the front spiral groove 17a and slides upwards along the front spiral groove 17a, so that the front wheel joint 16a pivots relative to the front support 4, the front wheel joint 16a is driven to turn over 90 degrees, the wheel shaft of the front wheel 9 extends in the front-back direction, and the front wheel 9 is positioned between the front supports 4 on two sides;

when the rear connecting rod 3 rotates, the rear connecting rod 7 is driven to rotate, the rear connecting rod drives the rear first connecting piece 19b to rotate through the rear second connecting piece 20b, and then the rear driving rod 18b is driven to move upwards, the end part of the rear driving rod 18b is separated from the rear fixing groove, enters the rear spiral groove and slides upwards along the rear spiral groove, so that the rear wheel joint 16b pivots relative to the rear support 5, the rear wheel joint 16b is driven to turn over 90 degrees, the wheel shaft of the rear wheel 10 extends in the rear and rear direction, and the rear wheel 10 is positioned between the rear supports 5 on two sides;

and (5) folding the whole vehicle until all the parts are mutually closed.

Example two

Referring to fig. 9 and 10, the present embodiment provides a structure of a first wheel turnover mechanism and a second wheel turnover mechanism different from the first embodiment.

The first wheel turnover mechanism in this embodiment includes a wheel joint 16a connected to the front frame 4 so as to be relatively pivotable and relatively slidable and having a spiral groove 17a, a drive lever 18a provided on the front frame 4 and connected to the spiral groove 17a so as to be relatively slidable, a drive portion 27 which is moved by folding of the frame and is capable of driving the wheel joint 16a to slide, and the front wheel 9 is mounted on the front wheel joint 16 a. The front driving rod 18a in this embodiment is fixedly disposed on the front bracket 4, and the front driving rod 18a in this embodiment may be designed as two or only one on the left and right sides of the foldable stroller, and the left and right ends thereof are fixedly connected to the front brackets 4 on the left and right sides, respectively. The driving portion 27 is preferably a flexible member, such as a traction cable, etc., and the driving portion 27 is also preferably a rigid member, and another spiral groove is preferably provided on the front frame 4, and the driving portion 27 can be slidably connected with the spiral groove to avoid interference between the driving portion 27 and the front frame 4 when the front wheel joint 16a pivots. The driving part 27 shown in fig. 9 and 10 is provided outside the front frame 4, and it may be provided inside the front frame 4 to make the appearance of the cart more concise. The first wheel turnover mechanism in the embodiment is less limited by the frame structure, and can be suitable for more types of frames.

Similar to the embodiment, the first wheel turnover mechanism and the second wheel turnover mechanism may have different structures or the same structures, and in this embodiment, the first wheel turnover mechanism and the second wheel turnover mechanism have the same structures and are symmetrically arranged on the front side and the rear side of the foldable stroller. The detailed structure of the second wheel turning mechanism will not be described here.

The folding working principle of the cart is as follows:

when the trolley is folded, the locking device is unlocked, and the folding operation of the trolley frame is the same as that of the first embodiment;

the frame drives a driving part 27 arranged on the front side of the cart when being folded to enable the driving part 27 to move upwards, the driving part 27 pulls a front wheel joint 16a to move upwards, in the process that the front wheel joint 16a moves upwards, under the interaction of a front driving rod 18a and a front spiral groove 17a, the front wheel joint 16a pivots relative to the front support 4 to drive the front wheel joint 16a to turn over 90 degrees, a wheel shaft of a front wheel 9 extends along the front-back direction, and the front wheel 9 is positioned between the front supports 4 on the two sides;

the cart frame also drives a driving part 27 arranged at the rear side of the cart to move upwards when being folded, the driving part 27 pulls the rear wheel joint 16b to move upwards, and in the process that the rear wheel joint 16b moves upwards, under the interaction of the rear driving rod 18b and the rear spiral groove 17b, the rear wheel joint 16b pivots relative to the rear bracket 5 to drive the rear wheel joint 16b to turn over 90 degrees, so that the wheel shaft of the rear wheel 10 extends along the rear and rear direction, and the rear wheel 10 is positioned between the rear brackets 5 at the two sides;

and (5) folding the whole vehicle until all the parts are mutually closed.

EXAMPLE III

Referring to fig. 11, the present embodiment shows a frame structure of a foldable stroller in which the lower portion of a push rod 2 is rotatably coupled to the upper portion of a front bracket 4, and the upper portion of a rear bracket 5 is rotatably coupled to the push rod 2. The frame is connected with a seat pocket 25 through a seat pocket connector 24.

Example four

Referring to fig. 12, the present embodiment shows a frame structure of a foldable stroller in which the lower portion of the push rod 2 is rotatably coupled to the upper portion of the front frame 4, and the upper portion of the rear frame 5 is rotatably coupled to the push rod 2. The push rod 2 is connected with a handrail 26, a seat rod 11 is connected between the front bracket 4 and the rear bracket 5, and the front part and the rear part of the seat rod 11 are respectively connected with the front bracket 4 and the rear bracket 5 in a rotating way.

EXAMPLE five

Referring to fig. 13, the present embodiment shows a frame structure of a foldable stroller, in which a T-shaped joint 23 is fixedly connected to an upper end of a rear bracket 5, and a lower portion of a push rod 2 and an upper portion of a front bracket 4 are rotatably connected to the joint 23, respectively.

EXAMPLE six

Referring to fig. 14, the present embodiment shows a frame structure of a foldable stroller in which the upper portion of a front frame 4 and the upper portion of a rear frame 5 are rotatably coupled, a seat pocket connector 24 is fixedly coupled to the upper portion of the front frame 4 or the upper portion of the rear frame 5, and the lower portion of a push rod 2 is rotatably coupled to the seat pocket connector 24.

The folding children's shallow in above-mentioned each embodiment, front wheel and rear wheel are all automatic when the frame is folding when folding to the inboard upset of frame, and lie in the frame about inboard, and the shaft becomes the front and back and extends, and whole car is after accomplishing folding, and is flat, and the volume is very little, can stand by oneself moreover, simple structure, thinks about exquisitely, convenient operation.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A folding stroller comprising an openable and foldable frame, front wheels (9) and rear wheels (10) connected to the bottom of the frame, characterized in that: the frame include push rod (2), the bottom is connected fore-stock (4), the bottom of front wheel (9) are connected after-poppet (5) of rear wheel (10), push rod (2), fore-stock (4), after-poppet (5) in arbitrary two rotate each other and connect, and all the other one with at least one looks rotation in two is connected, works as the frame is when open mode, push rod (2), fore-stock (4), after-poppet (5) between expand relatively, works as the frame is when fold condition, push rod (2), fore-stock (4), after-poppet (5) draw close each other, front wheel (9) and rear wheel (10) all overturn and extend to the shaft along the fore-and-aft direction.

2. The folding stroller of claim 1, wherein: the front support (4) and the front wheel (9) are provided with a first wheel turning mechanism, a second wheel turning mechanism is arranged between the rear support (5) and the rear wheel (10), the frame is transited from an opening state to a folding state, and the first wheel turning mechanism and the second wheel turning mechanism act and respectively enable the front wheel (9) and the rear wheel (10) to turn.

3. A folding stroller in accordance with claim 2, in which: at least one of the first wheel turnover mechanism and the second wheel turnover mechanism comprises a wheel joint (16 a/16 b) which is connected with the front support (4) or the rear support (5) in a relatively pivoting and relatively sliding way and is provided with a spiral groove (17 a), a driving rod (18 a/18 b) which is arranged on the front support (4) or the rear support (5) and is connected with the spiral groove (17 a) in a relatively sliding way, and a driving part (27) which drives the frame to move through folding and can drive the wheel joint (16 a/16 b) to slide, wherein the front wheel (9) or the rear wheel (10) is arranged on the wheel joint (16 a/16 b).

4. A folding stroller in accordance with claim 2, in which: the frame also comprises

The upper push rod (1) is rotatably connected with the upper part of the push rod (2);

the upper part of the upper connecting rod (3) is rotationally connected with the lower part of the upper push rod (1), and the upper connecting rod (3) is rotationally connected with the rear bracket (5);

the front part of the front connecting rod (6) is rotationally connected with the front bracket (4);

the front part of the rear connecting rod (7) is rotationally connected with the front connecting rod (6), and the rear part of the rear connecting rod (7) is rotationally connected with the rear bracket (5);

and the lower sliding sleeve (8) can be connected to the rear connecting rod (7) in a sliding manner along the length direction of the rear connecting rod (7), and the lower part of the upper connecting rod (3) is rotatably connected with the lower sliding sleeve (8).

5. The folding stroller of claim 4, wherein: at least one of the first wheel turnover mechanism and the second wheel turnover mechanism comprises a wheel joint (16 a/16 b) which is pivoted with the front support (4) or the rear support (5) and is provided with a spiral groove (17 a), a driving rod (18 a/18 b) the end part of which is connected with the spiral groove (17 a) in a relatively sliding way, and a first connecting piece (19 a/19 b) which is connected with the driving rod (18 a/18 b), wherein the first connecting piece (19 a/19 b) is connected with the front connecting rod (6) or the rear connecting rod (7) in a rotating way, and the front wheel (9) or the rear wheel (10) is arranged on the wheel joint (16 a/16 b).

6. A folding stroller in accordance with claim 2, in which: the first turnover mechanism and the second turnover mechanism are identical in structure and are symmetrically arranged on the front side and the rear side of the folding stroller.

7. The folding stroller of claim 1, wherein: the lower part of the push rod (2), the upper part of the front bracket (4) and the upper part of the rear bracket (5) are coaxially and rotatably connected.

8. The folding stroller of claim 7, wherein: the frame also comprises

The front part of the seat rod (11) is rotationally connected with the rear bracket (5), and the rear part of the seat rod is rotationally connected with the upper connecting rod (3);

a seat plate (12) connected to the seat rod (11) so as to be slidable back and forth;

the front part of the pull rod (13) is rotationally connected with the seat plate (12), and the rear part of the pull rod is rotationally connected with the upper connecting rod (3).

9. The folding stroller of claim 8, wherein: the rear supports (5) are symmetrically arranged on the left side and the right side of the folding baby stroller, a rear cross rod (14) is fixedly connected between the rear supports (5), and the front portion of the seat rod (11) is rotatably connected to the rear cross rod (14).

10. A folding stroller comprising an openable and foldable frame, front wheels (9) and rear wheels (10) connected to the bottom of the frame, characterized in that: the frame include push rod (2), bottom connection fore-stock (4), the bottom of front wheel (9) are connected rear support (5) of rear wheel (10), push rod (2), fore-stock (4), any two in rear support (5) rotate each other and connect, and all the other one with at least one of two rotates mutually and connects, front wheel (9) with between fore-stock (4), rear wheel (10) with all connect through the wheel joint between rear support (5), work as the frame is folded up to fold condition from the open mode, the wheel joint is along with the folding of frame and is in rotate 90 degrees respectively on fore-stock (4) and rear support (5), just front wheel (9) draw close each other with corresponding rear wheel (10).

11. The folding stroller of claim 10, wherein: the frame still include a plurality of member, the frame when folding state, front wheel (9), rear wheel (10) contact with ground to push rod (2) or at least one in a plurality of member also contact with ground, make folding children's shallow self-supporting.