CN213168251U - Novel baby carriage - Google Patents

Abstract

The utility model discloses a novel baby carriage, which comprises a carriage frame, wherein the carriage frame comprises a front foot, a front wheel seat, a driving device, a rear support, a first linkage part, a second linkage part, a third linkage part, a front wheel seat, a front side and a rear side, wherein the front wheel seat is connected with the front foot in a relative rotating way and can move up and down relative to the front foot, the driving device is arranged between the front foot and the front wheel seat, the rear support is pivoted with the front foot, the first linkage part is pivoted with the front foot, the front side and the rear side are respectively pivoted with the second linkage part of the first linkage part and the rear support, the upper side and the lower side are respectively pivoted with the third linkage part on the upper sides of the first linkage part and the driving device, the front wheel seat is connected with a front wheel, during the folding process of the carriage frame, the front foot, the rear support, the first linkage part, the second linkage part and the third, thereby utility model perambulator is closed to receive to close the back and is comparatively flat, and whole volume of timber is little, portable, deposit.

Description

Novel baby carriage

Technical Field

The utility model relates to an infant's product field especially relates to perambulator.

Background

A family with children generally prepares a baby carriage, when the baby carriage needs to be used, the baby carriage is unfolded, a child sits in the baby carriage, and a parent pushes the baby carriage forwards, so that the burden of holding the baby by the parent is relieved; when the baby carriage is not used temporarily, the baby carriage is folded, and the folded baby carriage has small volume relative to the volume in the unfolded state, so that the baby carriage is convenient to carry or store.

With the higher living standard, many parents can take the baby carriage to travel, so the baby carriage needs to be placed in a trunk of the automobile, and the baby carriage is opened to push the baby after the baby carriage arrives at the destination, which requires that the volume of the folded baby carriage is smaller and better.

The existing baby carriage is still large after being folded due to the limitation of the structure, and is inconvenient to carry and store.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned shortcoming, provide a novel perambulator, it is closed to receive to close back whole volume of timber little, portable, deposit.

In order to achieve the above object, the utility model adopts the following technical scheme:

a novel stroller including a frame convertible between an expanded state and a collapsed state, the frame comprising:

a forefoot;

the upper side of the front wheel seat is connected with the front foot in a relatively rotating way and can move up and down relative to the front foot, and the lower side of the front wheel seat is connected with a front wheel;

a drive device disposed between the front leg and the front wheel base;

the front side of the rear bracket is pivoted with the front foot;

the front side of the first linkage piece is pivoted with the front foot;

the front side of the second linkage piece is pivoted with the first linkage piece, and the rear side of the second linkage piece is pivoted with the rear bracket;

the upper side of the third linkage piece is pivoted with the first linkage piece, and the lower side of the third linkage piece is pivoted with the upper side of the driving device;

in the folding process of the frame, the front foot, the rear support, the first linkage piece, the second linkage piece and the third linkage piece rotate relatively, the driving device drives the front wheel seat to rotate relatively to the front foot under the driving of the third linkage piece, and the front wheel is driven by the front wheel seat to rotate in the direction parallel to the front foot.

The driving device comprises a driving piece which can be connected to the front foot in a relatively up-and-down moving mode, spiral grooves which are respectively arranged on the driving piece and the front wheel seat, and a sliding rod, wherein the end part of the sliding rod can be connected with the spiral grooves in a relatively sliding mode, and the lower side of the third linkage piece is pivoted with the upper side of the driving piece.

The lower side of the driving part is arranged in the front foot in a relatively up-and-down moving mode, the upper side of the front wheel seat also extends into the front foot, and the spiral groove and the sliding rod are respectively arranged on the lower side of the driving part and the upper side of the front wheel seat.

The upper side of the driving piece extends out of the rear side of the front foot and is pivoted with the front lower side of the third linkage piece, the rear upper side of the third linkage piece is pivoted with the first linkage piece, and when the frame is in an unfolded state, the pivoting position of the upper side of the third linkage piece and the first linkage piece is positioned between the pivoting position of the front foot and the first linkage piece and the pivoting position of the second linkage piece and the first linkage piece.

The rear upper side of the front foot is provided with a notch extending up and down, the upper side of the driving piece extends outwards to form a connecting part, the connecting part extends out of the rear side of the front foot from the notch and is pivoted with the lower side of the third linkage piece, and the connecting part moves along the notch in the folding process of the frame; when the frame is in a folding state, the third linkage piece is at least partially positioned in the front foot through the notch.

An avoiding part matched with at least part of the shape of the third linkage part is arranged on the lower side of the second linkage part, and when the frame is in a folding state, the rear side of the third linkage part is at least partially positioned in the avoiding part.

Still set up in the stop device who is used for restricting both relative rotation angle between front wheel seat and the front foot, stop device including set up in arc spacing groove and stopper on front wheel seat and the front foot, the stopper stretches into arc spacing inslot the frame is when expanding the state and closing the conversion between the state, the stopper is relative at arc spacing inslot rotation removal, and is in when the frame is in the state of expanding, the stopper supports with the one end in arc spacing groove respectively and supports when the frame is in the state of closing, the stopper supports with the other end in arc spacing groove and supports.

The front wheel is configured to rotate to a position parallel to the front foot when the frame is in a stowed position.

The frame comprises left and right side supports which are connected, each side support comprises a front foot, a front wheel seat and a front wheel, and the two front wheels rotate towards one side where the other side is located in the folding process of the frame.

When the frame is in a folding state, the two front wheels are positioned between the front legs of the two side brackets.

The driving piece comprises an upper driving piece and a lower driving piece connected to the lower side of the upper driving piece, the upper side of the upper driving piece extends out of the front foot and is pivoted with the lower side of the third linkage piece, and the spiral groove or the sliding rod is arranged on the lower driving piece; preferably, the upper driving member is configured to be a sheet, two guiding members are convexly arranged on the inner wall of the front leg at intervals, and at least part of the sheet-shaped upper driving member is located between the two guiding members; the lower driving piece is arranged to be in a circular tube shape, the upper side of the front wheel seat is arranged to be in a cylindrical shape and extends into the circular tube-shaped lower driving piece, and the spiral groove is formed in the side wall of the circular tube-shaped lower driving piece.

The utility model has the advantages that:

the utility model discloses the perambulator owing to adopt above-mentioned technical scheme, it is whole relatively flat to receive back frame, and the volume of timber is little, portable, deposit.

Drawings

Fig. 1 is a schematic plan view of the stroller of the present invention in an unfolded state;

fig. 2 is a schematic perspective view of the stroller of the present invention in an unfolded state;

FIG. 3 is an enlarged schematic view of the portion B of FIG. 2;

FIG. 4 is an enlarged schematic view of the front leg body of the stroller of the present invention;

FIG. 5 is an exploded view according to part B of FIG. 2;

FIG. 6 is an enlarged cross-sectional view taken along line A-A of FIG. 1;

FIG. 7 is an enlarged schematic view of a portion of the assembly according to section B of FIG. 2;

fig. 8 is a schematic plan view of the stroller of the present invention in a folding process;

FIG. 9 is an enlarged cross-sectional view of the assembly of FIG. 6 in a collapsed state;

FIG. 10 is an enlarged view of the assembly of FIG. 7 in a collapsed condition;

fig. 11 is a schematic plan view of the stroller of the present invention in a folded state;

fig. 12 is a perspective view of the stroller of the present invention in a folded state;

FIG. 13 is an enlarged cross-sectional view of the assembly of FIG. 6 in a collapsed condition;

FIG. 14 is an enlarged view of the assembly of FIG. 7 in a collapsed condition;

fig. 15 is an enlarged schematic view of the portion C in fig. 14.

Detailed Description

As shown in fig. 1 to 15, the stroller of the present invention includes a frame that can be switched between an unfolded state and a folded state, and the frame includes

A forefoot 1;

a front wheel seat 2, the upper side of which is connected with the front foot 1 in a rotating way and can move up and down relative to the front foot 1, and the lower side of which is connected with a front wheel 3;

a drive device provided between the front leg 1 and the front wheel base 2;

a rear bracket 4, the front side of which is pivoted with the front foot 1, wherein the rear bracket 4 comprises a rear foot 41, the front side of which is pivoted with the front foot 1, and a rear wheel 42 connected with the lower side of the rear foot 41;

a first linkage piece 5, the front side of which is pivoted with the front foot 1;

a second linkage member 6, the front side of which is pivoted with the first linkage member 5 and the rear side of which is pivoted with the rear bracket 4;

a third linkage member 7, the upper side of which is pivoted with the first linkage member 5, and the lower side of which is pivoted with the upper side of the driving device;

in the folding process of the frame, the front foot 1, the rear support 4, the first linkage 5, the second linkage 6 and the third linkage 7 rotate relatively, the driving device drives the front wheel seat 2 to rotate relatively to the front foot 1 under the driving of the third linkage 7, and the front wheel 3 is driven by the front wheel seat 2 to rotate in the direction parallel to the front foot 1. Specifically, during the frame folding process, the front foot 1 and the rear support 4 rotate relatively to approach each other, the rear side of the first linkage 5, the front side of the second linkage 6 and the upper side of the third linkage 7 rotate relatively upward, and thus the front foot 1, the rear support 4, the first linkage 5, the second linkage 6 and the third linkage 7 rotate relatively to approach each other.

The driving device comprises a driving part 8 which can be connected to the front foot 1 in a relatively up-and-down moving manner, a spiral groove 81 which is respectively arranged on the driving part 8 and the front wheel seat 2, and a sliding rod 21, wherein the end part of the sliding rod 21 can be connected with the spiral groove 81 in a relatively sliding manner, and the lower side of the third linkage 7 is pivoted with the upper side of the driving part 8. The purpose that the front wheel seat 2 is connected with the front foot 1 in a relatively rotating way and can move up and down relative to the front foot 1 is achieved through the matching of the spiral groove 81 and the sliding rod 21.

In this embodiment, the spiral groove 81 is disposed at the lower side of the driving member 8, and the sliding rod 21 is disposed at the upper side of the front wheel seat 2. In another embodiment, the spiral groove 81 may be provided on the upper side of the front wheel holder 2, and the slide bar 21 may be provided on the lower side of the driving member 8.

Preferably, the lower side of the driving element 8 is disposed in the front leg 1 in a manner of moving up and down relatively, the upper side of the front wheel seat 2 also extends into the front leg 1 to be connected with the lower side of the driving element 8, and the spiral groove 81 and the sliding rod 21 are disposed on the lower side of the driving element 8 and the upper side of the front wheel seat 2, respectively. With such arrangement, the front foot 1 is shielded and protected, so that foreign objects can be prevented from entering the spiral groove 81 to influence the sliding of the sliding rod 21, i.e. the rotation of the front wheel seat 2 and the front wheel 3, thereby ensuring that the frame can be smoothly switched between the unfolding state and the folding state.

The upper side of the driving piece 8 extends out of the front foot 1 and is pivoted with the lower side of the third linkage piece 7. Preferably, the upper side of the driving member 8 extends out of the rear side of the front foot 1 and is pivotally connected with the front lower side of the third linkage member 7, the rear upper side of the third linkage member 7 is pivotally connected with the first linkage member 5, and when the frame is in the unfolded state, a pivot joint 51 between the upper side of the third linkage member 7 and the first linkage member 5 is located between a pivot joint 52 between the front foot 1 and the first linkage member 5 and a pivot joint 53 between the second linkage member 6 and the first linkage member 5.

The rear upper side of the front foot 1 is provided with a notch 11 extending up and down, the upper side of the driving piece 8 extends outwards to form a connecting part 82, the connecting part 82 extends out of the rear side of the front foot 1 from the notch 11 and is pivoted with the lower side of the third linkage piece 7, and in the folding process of the frame, the connecting part 82 moves along the notch 11; when the frame is in the folded state, the third link 7 is at least partially positioned in the front leg 1 through the notch 11. With such an arrangement, blocking interference of the driving member 8 moving upward can be avoided, and the third link 7 and the front leg 1 can be closer to each other in the retracted state. Preferably, the front leg 1 includes a main body 12 and a rear cover 13, wherein a long notch 121 is provided on the rear side of the main body 12, and the rear cover 13 is fixedly connected to the main body 12 and blocks the lower side of the long notch 121, so that the portion of the long notch 121 which is not blocked is formed as a vertically extending notch 11 on the rear upper side of the front leg 1. With this arrangement, the driving member 8 and the main body 12 can be connected and the rear cover 13 can be assembled, thereby facilitating the assembly of the driving member 8, the front leg 1 and the third link 7.

In this embodiment, the driving member 8 includes an upper driving member 83, a lower driving member 84 connected to the lower side of the upper driving member 83, and the spiral groove 81 or the sliding rod 21 is disposed on the lower driving member 84. The connecting portion 82 extends outward from the upper side of the upper driving member 83, that is, the upper side of the upper driving member 83 extends out of the front leg 1 and is pivotally connected to the lower side of the third link 7. Preferably, the upper driving member 83 is configured to be a sheet, two guiding members 14 are convexly disposed on the inner wall of the front foot 1 at intervals, and the sheet-shaped upper driving member 83 is at least partially located between the two guiding members 14, so that in the process that the driving member 8 moves up and down relative to the front foot 1, the sheet-shaped upper driving member 83 guides the direction of moving up and down through the two guiding members 14, so that the driving member 8 moves up and down more smoothly without twisting, and the movement and the guiding of the sheet-shaped object are easier to control, so that the accuracy of the angular rotation of the front wheel base 2, that is, the accuracy of the rotation angle of the front wheel 3, can be ensured.

The lower side of the lower driving member 84 is set to be in a circular tube shape, the upper side of the front wheel seat 2 is set to be in a cylindrical shape and extends into the circular tube-shaped lower driving member 84, and the spiral groove 81 is formed in the side wall of the circular tube-shaped lower driving member 84. The matching of the upper side of the cylindrical front wheel seat 2 and the lower side of the tubular lower driving element 84 can make the relative rotation of the front wheel seat 2 and the driving element 8 smoother. The flap upper drive member 83 may be connected to the upper side of the lower drive member 84 in any known and feasible manner.

The utility model discloses the perambulator still including be used for with the frame locks in the locking mechanical system of expansion state, locking mechanical system can adopt arbitrary publicly known feasible structure, and the unblock mode also can be arbitrary publicly known feasible mechanism, because it is not the utility model discloses an invent point, therefore do not give unnecessary details here.

When the baby carriage needs to be folded, the locking mechanism is unlocked firstly, and then the rear side of the first linkage piece 5 is enabled to rotate upwards and forwards, so that the front side of the second linkage piece 6 and the upper side of the third linkage piece 7 are driven to rotate upwards and forwards, and the front foot 1 pivoted with the front side of the first linkage piece 5 and the rear support 4 pivoted with the rear side of the second linkage piece 6 are relatively rotated and close to each other; meanwhile, with the rotational movement of the upper side of the third link 7, that is, with the upward and forward rotational movement of the third link 7, the driving member 8 is driven to move upward, and under the cooperation of the spiral groove 81 and the sliding rod 21, the front wheel seat 2 rotates, and the front wheel 3 rotates together with the front wheel seat 2 relative to the front wheel 1 in the direction parallel to the front wheel 1 (as shown in fig. 8, 9 and 10), until the front wheel 1, the rear bracket 4, the first link 5, the second link 6 and the third link 7 approach each other, and the frame is completely folded. Because receive the receipts in-process, the front wheel 2 toward with the rotation of the parallel direction of preceding foot 1 to make receive the receipts in-process, preceding foot 1 can not be close to relatively with after carriage 4 because the front wheel 2 is early run into after carriage 4 and can not be close to, that is to say, the front wheel 2 is so rotatory, makes preceding foot 1 and after carriage 4 can be leaned on more closely, thereby makes the utility model discloses whole after the perambulator is received to receipts is flatter, and whole volume of timber is little, portable, deposits.

Preferably, the front wheel 3 is configured to rotate to a position parallel to the front leg when the stroller frame is in the folded state, so that the overall size of the folded stroller in the front-rear direction is smaller, thereby further reducing the overall volume after folding. Furthermore, since the notch 11 is disposed on the rear upper side of the front leg 1, if the notch is not disposed, when the third linkage 7 rotates forward by a certain angle, the rear end of the rear leg 1 blocks the third linkage 7, so that the third linkage 7 cannot rotate forward, and thus the first linkage 5 and the second linkage 6 cannot rotate continuously, and the front leg 1 and the rear support cannot rotate relatively to approach each other, but since the notch is disposed on the rear upper side of the front leg 1 of the stroller of the present invention, the third linkage 7 can rotate forward until at least a part of the third linkage 7 extends into the rear leg 41 through the notch 11 (as shown in fig. 13), that is, the angle at which the third linkage 7 can rotate forward is larger, so that not only the third linkage 7 and the front leg 1 approach each other more, but also the rear side of the first linkage 5 can rotate forward by a larger angle, correspondingly, the lower side of the first linkage piece 5 can rotate backwards by a larger angle, so that the included angle between the first linkage piece 5 and the front foot 1 is smaller and is in a state of being approximately parallel (as shown in fig. 11 and 13), and thus, the first linkage piece 5 and the front foot 1 are closer together; as the first linkage 5 can rotate by a larger angle, the angle at which the upper side of the second linkage 6 can rotate forwards is larger, so that the included angle between the front foot 1 and the rear support 4 is smaller; therefore, the utility model discloses the perambulator is closed to receive the back, and is whole flatter to whole volume of timber is littleer.

In this embodiment, preferably, an escape portion 61 adapted to at least a part of the outer shape of the third link 7 is disposed at the lower side of the second link 6, so that the rear side of the third link 7 is at least partially located in the escape portion 61 when the frame is in the folded state. With the arrangement, when the frame is folded, the second linkage 6 and the third linkage 7 can be closer to each other, so that the front foot 1 and the rear support 4 can be closer to each other, that is, the size of the folded frame in the front-rear direction is smaller, and the whole volume of the folded baby carriage is smaller.

Preferably, a positioning groove 841 is further formed in the side wall of the lower driving member 84, the upper end of the spiral groove 81 is communicated with the positioning groove 841, when the frame is in the unfolded state, the end of the sliding rod 21 is located in the positioning groove 831, so that the front wheel 3 is positioned in the forward or backward direction, thereby facilitating the cart to walk. When the baby carriage is folded, the sliding rod 21 of the moving rod moves downwards into the spiral groove 81 from the positioning groove 841 along with the upward movement of the driving part 8.

In this embodiment, the frame includes left and right side frames 100 connected to each other, each of the side frames 100 includes the front leg 1, the front wheel seat 2 and the front wheel 3, and during the folding process of the frame, the two front wheels 3 rotate toward the opposite side. When the frame is in the folded state, the two front wheels 3 are positioned between the front legs 1 of the two side brackets 100. That is, the left front wheel 3 rotates to the right, and the right front wheel 3 rotates to the left, and accordingly, the spiral extending directions of the spiral grooves 81 of the driving devices of the brackets 100 on both sides are opposite, so that the two front wheels 3 can rotate toward the opposite side until the two front wheels 3 are positioned between the front legs 1 of the brackets 100 on both sides and are parallel to the front legs. Thus, the distance between the two front wheels 3 is relatively reduced in the folded state relative to the distance between the two front wheels 3 in the unfolded state of the stroller frame, and thus the size of the stroller in the left-right direction is small in the folded state, and the volume of the folded stroller is small.

Each collateral branch frame 100 still all includes after-poppet 4, just the front side of after-poppet 4 of both sides support pin joint respectively in the opposite side of two front legs 1, the front side of two rear legs 41 pin joint respectively in the opposite side of two front legs 1 promptly, reunion the utility model discloses the above-mentioned structure of frame, thereby when the frame is in the state of closing, two front legs 1, two front wheel seats 2 and two front wheels 3 all are located between two after-poppet 4. In this way, the overall dimension of the collapsed stroller in the front-rear direction is substantially equal to the front-rear dimension of the rear frame 4, and the collapsed stroller is very flat, so that the overall volume of the collapsed stroller is very small.

And a limiting device used for limiting the relative rotation angle of the front wheel seat 2 and the front foot 1 is also arranged between the front wheel seat and the front foot. The limiting device comprises an arc-shaped limiting groove 22 and a limiting block 15, the arc-shaped limiting groove 22 and the limiting block 15 are respectively arranged on the front wheel seat 2 and the front foot 1, the limiting block 15 extends into the arc-shaped limiting groove, when the frame is switched between the unfolding state and the folding state, the limiting block 15 rotates and moves relatively in the arc-shaped limiting groove (shown in figure 10), when the frame is in the unfolding state, the limiting block 15 abuts against one end of the arc-shaped limiting groove 22 (shown in figure 7), and when the frame is in the folding state, the limiting block 15 abuts against the other end of the arc-shaped limiting groove 22 (shown in figure 14). The limiting device is arranged, so that the front wheel 3 and the front wheel seat 2 can only rotate relative to the front foot 1 within a preset angle range when the frame is switched between the unfolding state and the folding state. In this embodiment, it can be ensured that the front wheels 3 are horizontally placed left and right when the frame is in the folded state. So, can guarantee the utility model discloses whole volume when perambulator is in to receive the state of closing is little.

In this embodiment, the arc-shaped limiting groove 22 is disposed on the outer wall of the front wheel seat 2, and the limiting block 15 is connected to the front foot 1. In other embodiments, the arc-shaped limiting groove 22 may be disposed on an inner wall of the front leg 1, and the limiting block 15 is disposed on the front wheel seat 2.

The frame further comprises a driver 9, the lower side of the driver 9 is pivoted with the rear side of the front foot 1 or/and the front side of the rear support 4, in this embodiment, the lower side of the driver 9 is coaxially pivoted with the rear side of the front foot 1 and the front side of the rear support 4, and the lower side of the driver 9 is located between the rear side of the front foot 1 and the front side of the rear support 4. After the frame is folded, the handle 9 rotates to be positioned between the two rear supports 4, thereby the utility model discloses the volume of material after the perambulator is folded is still little. In other embodiments, the lower side of the handle 9 can also be pivoted outside the rear frame 4, i.e. the two side frames 100 further include the handle 9, so that after the stroller is folded, the two rear frames 4 are located between the two handle 9, and the two front legs 1 and the front wheel 3 are located between the two rear frames 4, thereby the utility model discloses the whole body after the stroller is folded is still relatively flat, and the volume of material is small. In other embodiments, the lower side of the rider 9 may be connected to the front leg 1 in a manner of moving up and down relatively, so that the rider 9 may move down relative to the front leg 1 when the frame is folded, and the specific connection manner between the rider 9 and the front leg 1 and the rear bracket 4 may be any known and feasible technology, and is not the inventive point of the present invention, and therefore, is not described herein again.

In the above description of the orientation, the front wheel 3 is located at the front, the rear wheel 42 is located at the rear, the rider 9 is located at the upper position, the front and rear wheels 3 and 42 are located at the lower position, and the side brackets 100 are located at the left and right positions.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (34)

1. The utility model provides a novel baby carriage, its includes the frame that can convert between expansion state and receipts state, its characterized in that: the frame comprises

A forefoot;

the upper side of the front wheel seat is connected with the front foot in a relatively rotating way and can move up and down relative to the front foot, and the lower side of the front wheel seat is connected with a front wheel;

a drive device disposed between the front leg and the front wheel base;

the front side of the rear bracket is pivoted with the front foot;

the front side of the first linkage piece is pivoted with the front foot;

the front side of the second linkage piece is pivoted with the first linkage piece, and the rear side of the second linkage piece is pivoted with the rear bracket;

a third link member, the upper side of which is pivoted with the first link member and the lower side of which is pivoted with the upper side of the driving device;

in the folding process of the frame, the front foot, the rear support, the first linkage piece, the second linkage piece and the third linkage piece rotate relatively, the driving device drives the front wheel seat to rotate relatively to the front foot under the driving of the third linkage piece, and the front wheel is driven by the front wheel seat to rotate in the direction parallel to the front foot.

2. The new stroller as recited in claim 1, wherein: the driving device comprises a driving piece which can be connected to the front foot in a relatively up-and-down moving mode, spiral grooves which are respectively arranged on the driving piece and the front wheel seat, and a sliding rod, wherein the end part of the sliding rod can be connected with the spiral grooves in a relatively sliding mode, and the lower side of the third linkage piece is pivoted with the upper side of the driving piece.

3. The new stroller as recited in claim 2, wherein: the lower side of the driving part is arranged in the front foot in a relatively up-and-down moving mode, the upper side of the front wheel seat also extends into the front foot, and the spiral groove and the sliding rod are respectively arranged on the lower side of the driving part and the upper side of the front wheel seat.

4. The new stroller as recited in claim 2, wherein: the upper side of the driving piece extends out of the rear side of the front foot and is pivoted with the front lower side of the third linkage piece, the rear upper side of the third linkage piece is pivoted with the first linkage piece, and when the frame is in an unfolded state, the pivoting position of the upper side of the third linkage piece and the first linkage piece is positioned between the pivoting position of the front foot and the first linkage piece and the pivoting position of the second linkage piece and the first linkage piece.

5. The new stroller as recited in claim 3, wherein: the upper side of the driving piece extends out of the rear side of the front foot and is pivoted with the front lower side of the third linkage piece, the rear upper side of the third linkage piece is pivoted with the first linkage piece, and when the frame is in an unfolded state, the pivoting position of the upper side of the third linkage piece and the first linkage piece is positioned between the pivoting position of the front foot and the first linkage piece and the pivoting position of the second linkage piece and the first linkage piece.

6. The new stroller as recited in any one of claims 2 to 5, wherein: the rear upper side of the front foot is provided with a notch extending up and down, the upper side of the driving piece extends outwards to form a connecting part, the connecting part extends out of the rear side of the front foot from the notch and is pivoted with the lower side of the third linkage piece, and the connecting part moves along the notch in the folding process of the frame; when the frame is in a folding state, the third linkage piece is at least partially positioned in the front foot through the notch.

7. The new stroller as recited in claim 1, wherein: an avoiding part matched with at least part of the shape of the third linkage part is arranged on the lower side of the second linkage part, and when the frame is in a folding state, the rear side of the third linkage part is at least partially positioned in the avoiding part.

8. The new stroller as recited in any one of claims 2 to 5, wherein: an avoiding part matched with at least part of the shape of the third linkage part is arranged on the lower side of the second linkage part, and when the frame is in a folding state, the rear side of the third linkage part is at least partially positioned in the avoiding part.

9. The new stroller as recited in claim 6, wherein: an avoiding part matched with at least part of the shape of the third linkage part is arranged on the lower side of the second linkage part, and when the frame is in a folding state, the rear side of the third linkage part is at least partially positioned in the avoiding part.

10. The new stroller as recited in claim 1, wherein: still set up in the stop device who is used for restricting both relative rotation angle between front wheel seat and the front foot, stop device including set up in arc spacing groove and stopper on front wheel seat and the front foot, the stopper stretches into arc spacing inslot the frame is when expanding the state and closing the conversion between the state, the stopper is relative at arc spacing inslot rotation removal, and is in when the frame is in the state of expanding, the stopper supports with the one end in arc spacing groove respectively and supports when the frame is in the state of closing, the stopper supports with the other end in arc spacing groove and supports.

11. The new stroller as recited in any one of claims 2 to 5 and 9, wherein: still set up in the stop device who is used for restricting both relative rotation angle between front wheel seat and the front foot, stop device including set up in arc spacing groove and stopper on front wheel seat and the front foot, the stopper stretches into arc spacing inslot the frame is when expanding the state and closing the conversion between the state, the stopper is relative at arc spacing inslot rotation removal, and is in when the frame is in the state of expanding, the stopper supports with the one end in arc spacing groove respectively and supports when the frame is in the state of closing, the stopper supports with the other end in arc spacing groove and supports.

12. The new stroller as recited in claim 6, wherein: still set up in the stop device who is used for restricting both relative rotation angle between front wheel seat and the front foot, stop device including set up in arc spacing groove and stopper on front wheel seat and the front foot, the stopper stretches into arc spacing inslot the frame is when expanding the state and closing the conversion between the state, the stopper is relative at arc spacing inslot rotation removal, and is in when the frame is in the state of expanding, the stopper supports with the one end in arc spacing groove respectively and supports when the frame is in the state of closing, the stopper supports with the other end in arc spacing groove and supports.

13. The new stroller as recited in claim 8, wherein: still set up in the stop device who is used for restricting both relative rotation angle between front wheel seat and the front foot, stop device including set up in arc spacing groove and stopper on front wheel seat and the front foot, the stopper stretches into arc spacing inslot the frame is when expanding the state and closing the conversion between the state, the stopper is relative at arc spacing inslot rotation removal, and is in when the frame is in the state of expanding, the stopper supports with the one end in arc spacing groove respectively and supports when the frame is in the state of closing, the stopper supports with the other end in arc spacing groove and supports.

14. The new stroller as recited in claim 1, wherein: the front wheel is configured to rotate to a position parallel to the front foot when the frame is in a stowed position.

15. The new stroller as recited in any one of claims 2 to 5, 9, 12, 13, wherein: the front wheel is configured to rotate to a position parallel to the front foot when the frame is in a stowed position.

16. The new stroller as recited in claim 6, wherein: the front wheel is configured to rotate to a position parallel to the front foot when the frame is in a stowed position.

17. The new stroller as recited in claim 8, wherein: the front wheel is configured to rotate to a position parallel to the front foot when the frame is in a stowed position.

18. The new stroller as recited in claim 11, wherein: the front wheel is configured to rotate to a position parallel to the front foot when the frame is in a stowed position.

19. The new stroller as recited in claim 14, wherein: the frame comprises left and right side supports which are connected, each side support comprises a front foot, a front wheel seat and a front wheel, and the two front wheels rotate towards one side where the other side is located in the folding process of the frame.

20. The new stroller as recited in claim 19, wherein: when the frame is in a folding state, the two front wheels are positioned between the front legs of the two side brackets.

21. The new stroller as recited in claim 15, wherein: the frame comprises left and right side supports which are connected, each side support comprises a front foot, a front wheel seat and a front wheel, and the two front wheels rotate towards one side where the other side is located in the folding process of the frame.

22. The new stroller as recited in claim 21, wherein: when the frame is in a folding state, the two front wheels are positioned between the front legs of the two side brackets.

23. A new stroller according to claim 16, 17 or 18, characterized in that: the frame comprises left and right side supports which are connected, each side support comprises a front foot, a front wheel seat and a front wheel, and the two front wheels rotate towards one side where the other side is located in the folding process of the frame.

24. The new stroller as recited in claim 23, wherein: when the frame is in a folding state, the two front wheels are positioned between the front legs of the two side brackets.

25. The new stroller as recited in any one of claims 2 to 5, 9, 12, 13, 16 to 18, 24, wherein: the driving part comprises an upper driving part and a lower driving part connected to the lower side of the upper driving part, the upper side of the upper driving part extends out of the front foot and is pivoted with the lower side of the third linkage part, and the spiral groove or the sliding rod is arranged on the lower driving part.

26. The new stroller as recited in claim 25, wherein: the upper driving piece is in a sheet shape, two guide pieces are convexly arranged on the inner wall of the front foot at intervals, and at least part of the sheet-shaped upper driving piece is positioned between the two guide pieces.

27. The new stroller as recited in claim 26, wherein: the lower driving piece is arranged to be in a circular tube shape, the upper side of the front wheel seat is arranged to be in a cylindrical shape and extends into the circular tube-shaped lower driving piece, and the spiral groove is formed in the side wall of the circular tube-shaped lower driving piece.

28. The new stroller as recited in claim 6, wherein: the driving part comprises an upper driving part and a lower driving part connected to the lower side of the upper driving part, the upper side of the upper driving part extends out of the front foot and is pivoted with the lower side of the third linkage part, and the spiral groove or the sliding rod is arranged on the lower driving part.

29. The new stroller as recited in claim 8, wherein: the driving part comprises an upper driving part and a lower driving part connected to the lower side of the upper driving part, the upper side of the upper driving part extends out of the front foot and is pivoted with the lower side of the third linkage part, and the spiral groove or the sliding rod is arranged on the lower driving part.

30. The new stroller as recited in claim 11, wherein: the driving part comprises an upper driving part and a lower driving part connected to the lower side of the upper driving part, the upper side of the upper driving part extends out of the front foot and is pivoted with the lower side of the third linkage part, and the spiral groove or the sliding rod is arranged on the lower driving part.

31. The new stroller as recited in claim 15, wherein: the driving part comprises an upper driving part and a lower driving part connected to the lower side of the upper driving part, the upper side of the upper driving part extends out of the front foot and is pivoted with the lower side of the third linkage part, and the spiral groove or the sliding rod is arranged on the lower driving part.

32. The new stroller as recited in claim 23, wherein: the driving part comprises an upper driving part and a lower driving part connected to the lower side of the upper driving part, the upper side of the upper driving part extends out of the front foot and is pivoted with the lower side of the third linkage part, and the spiral groove or the sliding rod is arranged on the lower driving part.

33. The new stroller as recited in any one of claims 28 to 32, wherein: the upper driving piece is in a sheet shape, two guide pieces are convexly arranged on the inner wall of the front foot at intervals, and at least part of the sheet-shaped upper driving piece is positioned between the two guide pieces.

34. The new stroller as recited in claim 33, wherein: the lower driving piece is arranged to be in a circular tube shape, the upper side of the front wheel seat is arranged to be in a cylindrical shape and extends into the circular tube-shaped lower driving piece, and the spiral groove is formed in the side wall of the circular tube-shaped lower driving piece.

Images