CN110723191A - folding stroller - Google Patents

Abstract

The invention discloses a foldable children's stroller, comprising an openable and foldable frame, a front wheel and a rear wheel connected to the bottom of the frame, the frame comprising a push rod, a front bracket connected to the front wheel at the bottom, and a rear wheel connected to the bottom at the bottom. The rear bracket, any two of the push rod, front bracket, and rear bracket are rotatably connected to each other, and the other one is rotatably connected to at least one of the two. When the frame is in the open state, the push rod, front bracket, The rear brackets are relatively unfolded, and the axles of the front and rear wheels extend in the left and right directions. When the frame is in the folded state, the push rod, the front bracket, and the rear bracket move closer to each other, and the front and rear wheels are turned to the front and rear. direction extension. The folding children's stroller, after the whole vehicle is folded, is flat, very small in volume, and can stand on its own, with simple structure, ingenious conception and convenient operation.

Description

folding stroller

technical field

The present invention relates to a folding children's stroller.

Background technique

Folding strollers are widely used as a means of transportation for infants. It is easy to fold, and the volume is small after folding, which makes it easy to store and carry, which is the demand of consumers for the use of folding strollers. A foldable stroller in the prior art generally includes a foldable frame, a wheel mounted under the frame, a locking device capable of locking the frame in an open state, and a baby stroller mounted on the frame. Seat seat. The existing foldable strollers are generally larger in size after being folded, and take up space for carrying and storage.

SUMMARY OF THE INVENTION

In order to solve the above problems, the purpose of the present invention is to provide a folding stroller, which can make the folding stroller flatter and smaller in size after being folded.

In order to achieve the above purpose, the technical scheme adopted in the present invention is: a folding children's stroller, including an openable and foldable frame, a front wheel and a rear wheel connected to the bottom of the frame, the frame includes a push rod, the bottom is connected to the front wheel The front bracket of the wheel and the rear bracket of the bottom connected to the rear wheel, any two of the push rod, the front bracket and the rear bracket are rotatably connected to each other, and the other one is rotatably connected to at least one of the two, when the frame is opened. When the frame is in the folded state, the push rod, the front bracket and the rear bracket are close to each other, and the front and rear wheels are turned over until the axles extend in the front-rear direction.

Further, the frame also includes

an upper push rod, which is rotatably connected with the upper part of the push rod;

an upper link, the upper part of which is rotatably connected with the lower part of the upper push rod, and the upper link is rotatably connected with the rear bracket;

the front link, the front part of which is rotatably connected with the front bracket;

a rear link, the front part of which is rotatably connected with the front link, and the rear part of the rear link is rotatably connected with the rear bracket;

The sliding sleeve is slidably connected to the rear connecting rod along the length direction of the rear connecting rod, and the lower part of the upper connecting rod is rotatably connected with the sliding sleeve.

Further, a first wheel inversion mechanism is provided between the front bracket and the front wheel, and a second wheel inversion mechanism is provided between the rear bracket and the rear wheel. During the transition of the frame from the open state to the folded state, the first wheel Both the turning mechanism and the second wheel turning mechanism act to turn the front wheel and the rear wheel respectively.

Further, at least one of the first wheel turning mechanism and the second wheel turning mechanism includes a wheel joint which can be relatively pivotally and slidably connected with the front bracket or the rear bracket and has a spiral groove, and is provided on the front bracket or the rear bracket. The drive rod on the bracket and connected to the helical groove slidably, and the drive part that drives its movement through folding of the frame and can drive the wheel joint to slide, and the front wheel or the rear wheel is mounted on the wheel joint.

Optionally, at least one of the first wheel turning mechanism and the second wheel turning mechanism includes a wheel joint pivotally connected to the front bracket or the rear bracket and having a spiral groove, and a drive whose ends are slidably connected to the spiral groove. A rod and a first connecting piece connected with the driving rod, the first connecting piece is rotatably connected with the front link or the rear link, and the front wheel or the rear wheel is mounted on the wheel joint.

Optionally, there are two front wheels or rear wheels and are symmetrically arranged on the left and right sides of the folding stroller, and there are two wheel joints and are symmetrically arranged on the left and right sides of the folding stroller, the front wheel or the rear wheel. The utility model is installed on the wheel joint on the same side as it, and the left and right ends of the driving rod are respectively slidably connected with the spiral grooves on the left and right wheel joints. Furthermore, there are two first connecting pieces, which are symmetrically arranged on the left and right sides of the folding stroller, and the two first connecting pieces are fixedly connected by a cross piece. Furthermore, a second connecting piece is fixed on the front link or the rear link, and the first connecting piece is rotatably connected to the second connecting piece.

Further, the lower end of the helical groove communicates with a fixing groove. When the frame is in an open state, the end of the driving rod is connected in the fixing groove, so that the front wheel or the rear wheel is kept on its axle extending in the left and right direction.

Further, the first turning mechanism and the second turning mechanism have the same structure and are symmetrically arranged on the front and rear sides of the folding stroller.

Further, the lower part of the push rod, the upper part of the front bracket, and the upper part of the rear bracket are connected in a coaxial rotation.

Further, the frame also includes

a seat post, the front part of which is rotatably connected with the rear bracket, and the rear part is rotatably connected with the upper link;

a seat plate, which is connected with the seat post so as to be able to slide forward and backward;

The front part of the pull rod is rotatably connected with the seat plate, and the rear part is rotatably connected with the upper link.

Further, there are two rear brackets symmetrically arranged on the left and right sides of the folding stroller, a rear crossbar is fixedly connected between the two rear brackets, and the front part of the seat post is rotatably connected to the rear crossbar.

The present application also provides another technical solution: a foldable child stroller, comprising an openable and foldable frame, a front wheel and a rear wheel connected to the bottom of the frame, the frame including a push rod, and a bottom connected to the front wheel. The front bracket and the rear bracket whose bottom is connected to the rear wheel, any two of the push rod, the front bracket and the rear bracket are rotatably connected to each other, and the other one is rotatably connected to at least one of the two, the front wheel and the front bracket are , The rear wheel and the rear bracket are connected by the wheel joint. When the frame is folded from the open state to the folded state, the wheel joint rotates on the front bracket and the rear bracket respectively with the folding of the frame, and the front wheel and the rear bracket are respectively rotated. The corresponding rear wheels are moved closer to each other.

Preferably, the frame further includes a plurality of rods. When the frame is in a folded state, the front wheels and the rear wheels are in contact with the ground, and at least one of the push rod or the plurality of rods is also in contact with the ground, so that the stroller can be folded. self-reliance.

Due to the adoption of the above technical solutions, the folding stroller for children is flat after being folded, with a very small volume, and can stand on its own. The structure is simple, the conception is exquisite, and the operation is convenient.

Description of drawings

Accompanying drawing 1 is the side structure schematic diagram of the folding stroller in the first embodiment when it is opened;

2 is a schematic three-dimensional structure diagram of the folding stroller in the first embodiment when it is in an open state;

3 is a schematic side view of the folding stroller in the first embodiment during the folding process;

4 is a schematic three-dimensional structure diagram of the folding stroller in the first embodiment during the folding process;

Accompanying drawing 5 is the partial structure schematic diagram of accompanying drawing 4;

6 is a schematic side view of the folding stroller in the first embodiment when it is in a folded state;

7 is a schematic diagram of the front structure of the folding stroller in the first embodiment when it is in a folded state;

8 is a schematic three-dimensional structure diagram of the folding stroller in the first embodiment when it is in a folded state;

9 is a side structural schematic diagram of the first wheel turning structure or the second wheel turning structure in Embodiment 2;

10 is a schematic front view of the first wheel turning structure or the second wheel turning structure in Embodiment 2;

11 is a schematic structural diagram of the folding stroller in the third embodiment;

12 is a schematic structural diagram of the folding stroller in the fourth embodiment;

13 is a schematic structural diagram of the folding stroller in the fifth embodiment;

FIG. 14 is a schematic structural diagram of the folding baby stroller in the sixth embodiment.

The symbols in the figure are:

1. Upper push rod; 2. Lower push rod; 3. Upper connecting rod; 4. Front bracket; 5. Rear bracket; 6. Front connecting rod; 7. Rear connecting rod; 8. Slide sleeve; 9. Front wheel; 10, rear wheel; 11, seat post; 12, seat plate; 13, tie rod; 14, rear cross bar; 15, front cross bar; 16a, front wheel joint; 16b, rear wheel joint; 17a, front screw groove; 18a 18b, rear drive rod; 19a, front first connector; 19b, rear first connector; 20a, front second connector; 20b, rear second connector; 21a, front fixing slot; 22a , front cross bar; 23, joint; 24, seat pocket joint; 25, seat pocket; 26, armrest; 27, driving part.

Detailed ways

The 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 present invention can be more easily understood by those skilled in the art.

Example 1

It can be seen from the schematic structural diagrams of FIG. 1 to FIG. 8 that the folding stroller in this embodiment includes a frame that can be opened and folded, a front wheel 8 and a rear wheel 10 connected to the bottom of the frame, A locking device that locks the rack in the open state.

The frame includes a push rod 2, a front bracket 4 connected to the front wheel 9 at the bottom, and a rear bracket 5 connected to the rear wheel 10 at the bottom. Any two of the push rod 2, the front bracket 4, and the rear bracket 5 are rotatably connected to each other, and the rest One is rotatably connected with at least one of the two. When the frame is in the open state, the push rod 2, the front bracket 4, and the rear bracket 5 are relatively unfolded, and the axles of the front wheel 9 and the rear wheel 10 extend in the left and right directions. , When the frame is in the folded state, the push rod 2, the front bracket 4, and the rear bracket 5 are close to each other, and the front wheel 9 and the rear wheel 10 are turned over until the axles extend in the front-rear direction.

In this embodiment, a frame structure is given, in addition to the above-mentioned push rod 2 , front bracket 4 and rear bracket 5 , it also includes an upper push rod 1 , an upper link 3 , a front link 6 , and a rear link 7. Sliding sleeve 8.

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

The upper part of the upper link 3 is rotatably connected with the lower part of the upper push rod 1 through the rotating shaft b. In this embodiment, the rotating shaft b is located below the rotating shaft a. The upper link 3 is rotatably connected with the rear bracket 5 through the 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 rotatably connected through the same rotating shaft d. In this embodiment, the rotating shaft c is located below the rotating shaft b and the rotating shaft d.

The front part of the front connecting rod 6 is connected to the front bracket 4 in rotation through a rotating shaft h. In this embodiment, the rotating shaft h is located between the rotating shaft d and the front wheel 9 .

The front part of the rear link 7 is rotatably connected to the front link 6 through a rotating shaft g, and the rear part of the rear link 7 is rotatably connected to the rear bracket 5 through a rotating shaft e. In this embodiment, the rotating shaft e is located at the rotating shaft c and Between the rear wheels 1, that is, the rotation axis c is located between the rotation axis d and the rotation axis e.

The sliding sleeve 8 is slidably connected to the rear connecting rod 7 along the length direction of the rear connecting rod 7. In this embodiment, the sliding sleeve 8 slides between the rotating shaft g and the rotating shaft e. When the frame is in the open state, the sliding sleeve 8 Close to the rotating shaft e, when the frame is in the folded state, the sliding sleeve 8 is close to the rotating shaft g. The lower part of the upper link 3 is rotatably connected to the sliding sleeve 8 through a rotating shaft f. In this embodiment, the rotating shaft f is located below the rotating shaft c, that is, the rotating shaft c is located between the rotating shaft b and the rotating shaft f.

The above-mentioned upper push rod 1, push rod 2, upper connecting rod 3, and rear bracket 5 form a first four-bar linkage mechanism; The crank-slider mechanism linked by the connecting rod mechanism; 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 linked with the above-mentioned first four-bar linkage mechanism and the crank-slider mechanism.

In a more preferred embodiment, the frame further includes a seat post 11 , the front part of which is rotatably connected with the rear bracket 5 and the rear part is rotatably connected with the upper link 3 , and is connected with the seat post 11 so as to be able to slide forward and backward. The seat plate 12 and the pull rod 13 whose front part is rotatably connected with the seat plate 12 and the rear part is rotatably connected with the upper link 3 . Preferably, the connection between the seat post 11 and the upper link 3 is located between the rotating shaft b and the rotating shaft c.

In this embodiment, the above-mentioned upper push rod 1, push rod 2, upper link 3, front bracket 4, rear bracket 5, front link 6, and rear link 7 are symmetrically arranged on the left and right sides of the frame. , Sliding sleeve 8, front wheel 9, rear wheel 10, seat post 11, tie rod 13. A fixed front cross bar 15 is connected between the left and right front brackets 4 , a rear cross bar 14 is fixedly connected between the left and right rear brackets 5 , and the front part of the seat post 11 is rotatably connected to the rear cross bar. on rod 14.

In a more preferred embodiment, the lengths of the above-mentioned upper push rod 1, push rod 2, upper link 3, front bracket 4, and rear bracket 5 are similar to make the frame more square and flat after folding .

In a more preferred embodiment, when the frame is in the folded state, in order to enable the folding stroller to stand on its own, when the front wheel 9 and the rear wheel 10 are in contact with the ground, at least one rod in the frame is connected to the ground. It also acts as an auxiliary support in contact with the ground, so that the folding stroller can stand stably and independently. In this embodiment, in the folded state, the upper link 3 contacts the ground, and the upper push rod 1 or the push rod 2 can also be used to contact the ground.

The locking device can adopt the structure in the prior art. In this embodiment, the unlocking operation member of the locking device is arranged on the push handle above the upper push rod 1. Since the locking device is not the invention of the present application, it is not shown in the drawings. marked, and no specific description will be made here.

A first wheel inversion mechanism is provided between the front bracket 4 and the front wheel 9, and a second wheel inversion mechanism is provided between the rear bracket 5 and the rear wheel 10. During the transition of the frame from the open state to the folded state, the first wheel inversion mechanism is set. Both the wheel inversion mechanism and the second wheel inversion mechanism act to invert the front wheel 9 and the rear wheel 10 respectively.

The structures of the first wheel turning mechanism and the second wheel turning mechanism may be different or the same. In this embodiment, the structures of the two are basically the same, and are symmetrically arranged on the front and rear sides of the folding stroller.

Taking the first wheel turning mechanism as an example to illustrate the structure, the first wheel turning mechanism includes a front wheel joint 16a pivotally connected to the front bracket 4 and having a front helical groove 17a. The connected front driving rod 18a, the front first connecting piece 19a connected with the front driving rod 18a, the front first connecting piece 19a is rotatably connected with the front link 6, and the front wheel 9 is installed on the front wheel joint 16a. The front driving rod 18a and the front first connecting member 19a can be connected rotatably or fixedly. When the two are fixedly connected, the front driving rod 18a will slide itself along the front spiral groove 17a at the same time. The center line is the axis for rotation.

Specifically, two front wheel joints 16a are symmetrically connected to the bottoms of the two front brackets 4 on the left and right sides of the folding 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 can be designed as two on the left and right sides of the folding stroller, or as in the present embodiment, there is one front driving rod 18a, and its left and right ends are respectively connected with the left and right front wheels. The front helical grooves 17a on 16a are slidably connected.

Correspondingly, there are also two front first connecting pieces 19a symmetrically arranged on the left and right sides of the folding stroller. Preferably, the two front first connecting pieces 19a are fixedly connected through the front cross piece 22a. In the embodiment, the front cross piece 22a is the front footrest of the foldable stroller. When the child sits on the seat plate 12, the front footrest can be used for the child to place their feet thereon.

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

In a more preferred embodiment, the lower end of the front helical groove 17a communicates with the front fixing groove 21a. When the frame is in an open state, the end of the front driving rod 18a slides into the front helical groove 17a and connects to the front helical groove 17a. In the fixing groove 21a, the front wheel 9 is held on 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 helical groove (not shown in the drawings), the ends of which are slidably connected to the rear helical groove The rear driving rod 18b, the rear first connecting piece 19b connected with the rear driving rod 18b, the rear first connecting piece 19b is rotatably connected with the rear link 7, and the rear wheel 10 is installed on the rear wheel joint 16b. The rear driving rod 18b and the rear first connecting piece 19b can be connected rotatably or fixedly.

Specifically, two rear wheel joints 16b are symmetrically connected to the bottoms of the two rear brackets 5 on the left and right sides of the folding stroller, and the two rear wheels 9 are respectively mounted on the rear wheel joints 16b on the same side. The rear drive rod 18b can be designed as two on the left and right sides of the folding stroller, or as in this embodiment, there is one rear drive rod 18b, the left and right ends of which are respectively connected with the left and right rear wheel joints. The rear helical grooves on 16b are slidably connected. Correspondingly, there are also two rear first connecting pieces 19b symmetrically arranged on the left and right sides of the folding stroller. In this embodiment, the rear second connecting member 20b is fixed on the rear link 7, the rear second connecting member 20b is connected to the rear of the rear link 7, and the rear first connecting member 19b is rotatably connected to the rear second connecting member On the member 20b, 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 20b.

In a more preferred embodiment, the lower end of the rear helical groove communicates with a rear fixing groove (not shown in the drawings), and when the frame is in an open state, the end of the rear driving rod 18b slides from the rear helical groove The rear wheel 10 is held in the rear fixing groove, and the rear wheel 10 is kept on its axle extending in the left-right direction. How the cart folds works:

When the cart is folded, unlock the locking device, turn the upper push rod 1 forward and downward, drive the push rod 2 and the upper link 3 to move downward and move closer to the rear bracket 5, the first four-bar linkage mechanism is folded and pushed up The rod 1 and the push rod 2 are brought together from the rear of the rear bracket 5 toward the rear bracket 5 . When the first four-bar linkage mechanism is folded, the seat post 11 and the pull rod 13 are driven to rotate, and the seat plate 12 slides backward along the seat post 11 . Because the lower end of the upper push rod 1 rotates backward, the upper end of the upper link 3 is driven to rotate backward, so that the lower end of the upper link 3 rotates forward, so that the sliding sleeve 8 slides forward along the rear link 7, thereby making the rear The front part of the connecting rod 7 rotates upwards and moves closer to the rear bracket 5 , and the slider-crank mechanism is thus folded in linkage. Due to the driving of the push rod 2 and the rear link 7, the front bracket 4 and the front link 6 are rotated to move closer to the rear bracket 5, and the second four-link mechanism is linked and folded accordingly;

When the front link 3 rotates, it drives the front link 6 to rotate, the front link 6 drives the front first link 19a to rotate through the front second link 20a, and then drives the front drive rod 18a to move upward, and the end of the front drive rod 18a Disengage the front fixing groove 21a, enter the front helical groove 17a and slide upward along the front helical groove 17a, so that the front wheel joint 16a pivots relative to the front bracket 4, and drives the front wheel joint 16a to turn 90°, so that the axle of the front wheel 9 is along the The front and rear directions extend, and the front wheels 9 are located between the front brackets 4 on both sides;

When the rear link 3 rotates, it drives the rear link 7 to rotate, and the rear link drives the rear first connecting piece 19b to rotate through the rear second connecting piece 20b, thereby driving the rear driving rod 18b to move upward, and the end of the rear driving rod 18b disengages The rear fixing groove enters the rear helical groove and slides up along the rear helical groove, so that the rear wheel joint 16b pivots relative to the rear bracket 5, and drives the rear wheel joint 16b to turn 90°, so that the axle of the rear wheel 10 extends in the rear and rear direction. , and the rear wheel 10 is located between the rear brackets 5 on both sides;

Complete the folding of the whole vehicle until all the parts are close to each other.

Embodiment 2

Referring to FIG. 9 and FIG. 10 , this embodiment provides structures of the first wheel turning mechanism and the second wheel turning mechanism which are different from those of the first embodiment.

The first wheel turning mechanism in this embodiment includes a wheel joint 16a that is connected to the front bracket 4 in a relatively pivotable and relatively slidable manner and has a helical groove 17a. 17a is connected to the drive rod 18a, and the drive part 27 that drives the movement through the folding of the frame and can drive the wheel joint 16a to slide, and the front wheel 9 is mounted on the front wheel joint 16a. The front driving rods 18a in this embodiment are fixedly arranged on the front bracket 4. The front driving rods 18a in this embodiment can be designed as two on the left and right sides of the folding stroller, or only one can be provided. The left and right ends are respectively fixedly connected with the front brackets 4 on the left and right sides. The driving part 27 is preferably a flexible part, such as a traction cable, etc., and the driving part 27 can also be a rigid part, then preferably another helical groove is provided on the front bracket 4, and the driving part 27 can be relatively slidably connected with the helical groove, In order to avoid interference between the driving part 27 and the front bracket 4 when the front wheel joint 16a is pivoted. The driving part 27 shown in FIG. 9 and FIG. 10 is arranged outside the front bracket 4 , and it can also be arranged inside the front bracket 4 to make the appearance of the cart more concise. The first wheel turning mechanism in this embodiment is less restricted by the structure of the frame, and can be applied to more types of frames.

Similar to the first embodiment, the structures of the first wheel turning mechanism and the second wheel turning mechanism can be different or the same. In this embodiment, the two have the same structure and are symmetrically arranged on the front and rear sides of the folding stroller. . The specific structure of the second wheel turning mechanism will not be repeated here.

How the cart folds works:

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

When the frame is folded, the driving part 27 arranged on the front side of the cart is driven to move upward, and the driving part 27 pulls the front wheel joint 16a to move upward. During the upward movement of the front wheel joint 16a, the front driving rod 18a and the Under the interaction of the front helical groove 17a, the front wheel joint 16a is pivoted relative to the front bracket 4, and the front wheel joint 16a is driven to turn 90°, so that the axle of the front wheel 9 extends in the front-rear direction, and the front wheel 9 is located at the front of the two sides. Between brackets 4;

When the frame is folded, it also drives the driving part 27 arranged on the rear side of the cart to move upward. Under the interaction of the rod 18b and the rear spiral groove 17b, the rear wheel joint 16b is pivoted relative to the rear bracket 5, which drives the rear wheel joint 16b to turn 90°, so that the axle of the rear wheel 10 extends in the rear and rear direction, and the rear wheel 10 is located in the rear. Between the rear brackets 5 on both sides;

Complete the folding of the whole vehicle until all the parts are close to each other.

Embodiment 3

Referring to FIG. 11, the present embodiment provides a frame structure of a folding stroller, wherein the lower part of the push rod 2 is rotatably connected with the upper part of the front bracket 4, and the upper part of the rear bracket 5 is rotatably connected with the push rod 2 . A seat pocket 25 is connected to the frame through a seat pocket joint 24 .

Embodiment 4

Referring to FIG. 12 , this embodiment provides a frame structure of a folding stroller, wherein the lower part of the push rod 2 is rotatably connected to the upper part of the front bracket 4 , and the upper part of the rear bracket 5 is rotatably connected to the push rod 2 . An armrest 26 is connected to the push rod 2 , a seat post 11 is connected between the front bracket 4 and the rear bracket 5 , and the front and rear parts of the seat post 11 are rotatably connected to the front bracket 4 and the rear bracket 5 respectively.

Embodiment 5

Referring to FIG. 13, the present embodiment provides a frame structure of a folding stroller, wherein the upper end of the rear bracket 5 is fixedly connected with a T-shaped joint 23, and the lower part of the push rod 2 and the upper part of the front bracket 4 are respectively connected with The joints 23 are connected in rotation.

Embodiment 6

Referring to FIG. 14, the present embodiment provides a frame structure of a folding stroller, wherein the upper part of the front bracket 4 and the upper part of the rear bracket 5 are rotatably connected, and the upper part of the front bracket 4 or the upper part of the rear bracket 5 is fixed A seat pocket joint 24 is connected, and the lower part of the push rod 2 is rotatably connected with the seat pocket joint 24 .

In the folding stroller in the above-mentioned embodiments, when folded, the front wheel and the rear wheel are automatically turned to the inside of the frame when the frame is folded, and are located on the left and right inner sides of the frame, and the axles extend in the front and rear, and the whole vehicle is completed. After being folded, it is flat, very small in size, and can stand on its own, with simple structure, ingenious conception and convenient operation.

The above-mentioned embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and the purpose thereof is to enable those who are familiar with the art to understand the content of the present invention and implement them accordingly, and cannot limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included within the protection scope of the present invention.

Claims (11)

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.

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