CN111824308B

CN111824308B - Foldable baby stroller

Info

Publication number: CN111824308B
Application number: CN201910300073.5A
Authority: CN
Inventors: 吴春华
Original assignee: Jiaxing Xiaohuzi Bike Factory Co ltd
Current assignee: Jiaxing Xiaohuzi Bike Factory Co ltd
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2025-02-07
Anticipated expiration: 2039-04-15
Also published as: CN111824308A

Abstract

The present invention provides a foldable baby stroller, which has an unfolded state and a folded state. The foldable baby stroller comprises a frame body, a front wheel assembly arranged at the front of the frame body and comprising at least one front wheel, a rear wheel assembly arranged at the rear of the frame body and comprising at least two rear wheels, and a seat assembly arranged at the upper part of the frame body, wherein the frame body comprises: a head tube; at least one beam, the beam having a first end and a second end, the first end of the beam being pivotally connected to the head tube; at least one connecting head, the second end of the beam being pivotally connected to the connecting head; at least two rear fork rods, the rear fork rods having a first end and a second end, the first end of the rear fork rods being pivotally connected to the connecting head, and the second end of the rear fork rods being connected to the rear wheel assembly. The foldable baby stroller of the present invention does not need to disassemble parts when folding, can achieve "one-button" folding, and is more convenient and quick to operate. The volume of the foldable baby stroller after folding is more compact, and the longitudinal dimension can be significantly reduced.

Description

Foldable baby carriage

Technical Field

The present application relates to a child's vehicle, and more particularly to a foldable child's vehicle.

Background

A child's vehicle (e.g., a child's tricycle) that is currently common in the market mainly includes a frame body, a front fork connected to the frame body, front wheels mounted to the front fork, rear wheel frames connected to both sides of the frame body, two rear wheels mounted to the rear wheel frames, a seat assembly provided on the frame body, and a steering assembly provided on the frame body. A push rod assembly for adult use may also be provided if desired. The frame body of such a child tricycle cannot be folded and thus cannot be changed in its longitudinal dimension. Therefore, the children tricycle has a large volume and is inconvenient to transport and package. Foldable child tricycles have also been developed, but such child tricycles often require disassembly of parts during folding, are inconvenient to operate, and are still large in volume after folding.

The applicant of the present application submitted and authorized chinese patent CN105480342B at 13/4 in 2016 relates to a foldable child tricycle and a folding method thereof. The child tricycle has an extended state and a collapsed state wherein the frame includes an upper link assembly, a lower link assembly, a head tube and a support bar that form a four-bar mechanism, thereby collapsing and expanding. When folding, the locking device is unlocked firstly, then the push rod component is lifted upwards to separate from the upper and lower connecting rod components, then previously turning over the push rod assembly to enable the push rod assembly, the handle bar the upper connecting rod assembly and the lower connecting rod assembly are mutually closed, and stacking from top to bottom. This arrangement effectively reduces the volume of the child tricycle for portability and allows the child tricycle to be folded and unfolded when needed. The contents of CN105480342B are incorporated herein by reference in their entirety. The applicant hopes to further develop a novel child tricycle based on the above, the folding and unfolding operations are more convenient, and the folded volume is more compact.

Disclosure of Invention

In view of the above-mentioned problems, an object of the present invention is to provide a foldable child car that is more convenient to fold and unfold, and has a more compact folded volume.

To achieve the above object, the present invention provides a foldable child car having an unfolded state and a folded state, the foldable child car comprising a frame body, a front wheel assembly provided at a front portion of the frame body and including at least one front wheel, a rear wheel assembly provided at a rear portion of the frame body and including at least two rear wheels, and a seat assembly provided at an upper portion of the frame body, wherein the frame body includes a head pipe, at least one girder having a first end and a second end, the first end of the girder being pivotally connected to the head pipe, at least one connection head, the second end of the girder being pivotally connected to the connection head, at least two rear fork bars having a first end and a second end, the first ends of the rear fork bars being pivotally connected to the connection head, and the second ends of the rear fork bars being connected to the rear wheel assembly.

Preferably, the at least one girder includes a first girder and a second girder, first ends of the first girder and the second girder are pivotally connected to the head pipe through at least one connection block, the at least one connection block includes a first connection block and a second connection block, the first connection block and the second connection block can contact each other and be separated from each other, and second ends of the first girder and the second girder are pivotally connected to the first connection block and the second connection block.

Preferably, the first connection head has a first upper pivot head, a second upper pivot head and a third upper pivot head, respectively, facing in different directions, and the second connection head has a first lower pivot head, a second lower pivot head and a third lower pivot head, respectively, facing in different directions, wherein the second end of the first girder is pivotally connected to the first connection head through the first upper pivot head, and the second end of the second girder is pivotally connected to the second connection head through the first lower pivot head.

Preferably, a locking member is included which locks the first connector and the second connector together in normal use, and which is released when folding is required.

Preferably, the at least two rear forks comprise a first rear fork and a second rear fork, the first rear fork comprising a first upper rear fork and a first lower rear fork, the second rear fork comprising a second upper rear fork and a second lower rear fork.

Preferably, the at least two rear forks comprise a first rear fork and a second rear fork, the first rear fork comprises a first upper rear fork and a first lower rear fork, the second rear fork comprises a second upper rear fork and a second lower rear fork, each rear fork has a first end and a second end, the first end of the first upper rear fork is pivotally connected to the first connector through the third upper pivot joint, the first end of the second upper rear fork is pivotally connected to the first connector through the second upper pivot joint, the first end of the first lower rear fork is pivotally connected to the second connector through the third lower pivot joint, the first end of the second lower rear fork is pivotally connected to the second connector through the second lower pivot joint, the second ends of the first upper rear fork and the first lower rear fork are pivotally connected to the rear wheel inside the rear wheel, and the second lower fork are pivotally connected to the other rear wheel inside the rear wheel.

Preferably, a push rod assembly is also included for providing guidance for the folding of the collapsible pushchair.

Preferably, the at least one connector comprises a first connector and a second connector, the push rod assembly comprising a push rod, the first connector being slidable relative to the push rod and the second connector being fixed relative to the push rod.

Preferably, the foldable child car is a foldable child tricycle comprising one front wheel provided at the front of the frame body, two rear wheels provided at the rear of the frame body, and a steering assembly provided at the front of the frame body.

Preferably, the foldable child tricycle further comprises pedals for driving the front wheels and/or pedals fixed to the frame body.

Preferably, the parts of the foldable child tricycle are the rear wheel assembly, the frame body, the steering assembly and the front wheel assembly, and the seat assembly, respectively, from bottom to top after folding.

The invention also provides a foldable frame for a foldable child car, the frame comprising a head pipe; a first girder and a second girder having a first end and a second end, respectively, the first end of the first girder being pivotally connected to the head pipe and the first end of the second girder being pivotally connected to the head pipe; a first connection head and a second connection head, the first connection head having a first upper pivot joint, a second upper pivot joint and a third upper pivot joint, which are respectively directed in different directions, the second connection head having a first lower pivot joint, a second lower pivot joint and a third lower pivot joint, which are respectively directed in different directions, the second end of the first girder being pivotally connected to the first connection head through the first upper pivot joint, the second end of the second girder being pivotally connected to the second connection head through the first lower pivot joint, the first connection head and the second connection head being movable toward or away from each other, and a first rear fork and a second rear fork comprising a first upper rear fork and a first lower rear fork, each of the rear fork having a first end and a second end, the first end of the first upper rear fork being pivotally connected to the second connection head through the first upper pivot joint, the first end of the first rear fork being pivotally connected to the first connection head through the second lower pivot joint, the first rear fork and the second rear fork comprising a first upper rear fork and a second rear fork, each of the rear fork having a first end and a second end, the first rear fork and the second rear fork, the first rear fork being pivotally connected to the first end of the first rear fork, the second ends of the first upper rear fork and the first lower rear fork are pivotally connected to a rear wheel mount located inboard of one rear wheel, and the second ends of the second upper rear fork and the second lower rear fork are pivotally connected to a rear wheel mount located inboard of the other rear wheel.

Preferably, the foldable frame further comprises a push rod assembly comprising a telescopic push rod, the first connector being slidable relative to the push rod and the second connector being fixed relative to the push rod.

The foldable baby carrier skillfully applies the principle of a planar link mechanism, and parts are not required to be disassembled when the baby carrier is folded, so that the folding of one key can be realized, and the operation is very convenient and quick. Moreover, compared to the prior art, the foldable pushchair of the present invention is more compact after folding, in particular with a significant reduction in the longitudinal dimension.

Drawings

FIG. 1 is a side view of a child's tricycle without a push rod assembly according to a first embodiment of the present invention;

FIG. 2is an exploded perspective view of the child's tricycle shown in FIG. 1;

FIG. 3 is a front view of the child's tricycle shown in FIG. 1;

FIG. 4 is an exploded perspective view of the child tricycle of FIG. 1 from another perspective;

FIG. 5 is an exploded perspective view of the frame body;

FIG. 6 is an exploded perspective view of the frame body from another perspective;

FIG. 7 is a side view of a child's tricycle with a push rod assembly mounted thereto according to a second embodiment of the present invention;

FIG. 8 is a front view of the child's tricycle of FIG. 7;

FIG. 9 is a perspective view of the child tricycle of FIG. 7 after being folded;

FIG. 10 is an exploded perspective view of the child's tricycle shown in FIG. 7;

FIG. 11 is an exploded perspective view of the child tricycle of FIG. 7 from another perspective;

fig. 12 is an exploded perspective view of a frame body according to a second embodiment of the present invention, and

Fig. 13 is an exploded perspective view of a frame body according to a second embodiment of the present invention from another angle.

Detailed Description

Preferred embodiments of the child tricycle according to the present invention will be described in detail below with reference to the accompanying drawings, in which like reference numerals refer to like elements throughout. The terms "front", "rear", "upper" and "lower" used herein merely denote relative positional relationships, and do not constitute a particular limitation.

As shown in fig. 1 to 4, the foldable child tricycle according to the first embodiment of the present invention includes a frame body 1, a steering assembly 2 provided at the front of the frame body 1, a front wheel assembly provided at the front of the frame body 1 and including one front wheel 24, a rear wheel assembly provided at the rear of the frame body 1 and including two rear wheels 3, and a seat assembly 4 provided at the upper portion of the frame body 1.

The frame body 1 mainly includes a head pipe 22, first and second cross members 11 and 12, first and second connectors 13 and 14, and first and second rear fork arms 15 and 16. The structure of the frame body 1 will be described in detail below.

The steering assembly 2 is inserted into the head pipe 22 of the frame body 1. The steering assembly 2 includes a handle 21 for controlling the direction of travel of the child's tricycle. More specifically, the steering assembly 2 is connected to the front fork 23. One end of the front fork 23 is also inserted into the head pipe 22 of the frame body 1, and the other end of the front fork 23 is mounted with a front wheel assembly. The front wheel 24 is driven by pedals 25. The riding child can travel by stepping on the pedals 25 and simultaneously operate the traveling direction of the child tricycle through the handle 21 of the steering assembly 2.

The seat assembly 4 is provided at an upper portion of the frame body 1, preferably detachably mounted to a fixed seat provided on the frame body 1. The seat assembly 4 may, for example, comprise a rail, a backrest, or the like, which are preferably pivotally foldable to facilitate folding of the entire child's tricycle. In addition, for more comfort of riding, a pedal 41 fixed to the frame body 1 may be provided for the riding child to step on.

The structure of the frame body 1 will be described in detail further below with reference to fig. 5 and 6.

As shown, the first and second longerons 11, 12 have first or front ends and second or rear ends, respectively. The head pipe 22 is provided with a connection block 5, and the connection block 5 may include, for example, an upper connection block 51 and a lower connection block 52. The first end of the first girder 11 is pivotally connected to the head pipe 22 by an upper connection block 51. The first end of second longeron 12 is pivotally connected to head tube 22 by a lower connection block 52. The first connector 13 has a first upper pivot 131, a second upper pivot 132 and a third upper pivot 133, which are directed in different directions, respectively. Similarly, the second connection head 14 has a first lower pivot 141, a second lower pivot 142, and a third lower pivot 143, each facing in a different direction. The second end of the first girder 11 is pivotally connected to the first connection point 13 by means of a first upper pivot joint 131. The second end of second longeron 12 is pivotally connected to second connector 14 by a first lower pivot joint 141.

The first 15 and second 16 rear fork arms are substantially identical in construction. In this embodiment, the first rear fork 15 includes a first upper rear fork 151 and a first lower rear fork 152, and the second rear fork 16 includes a second upper rear fork 161 and a second lower rear fork 162. Each rear fork arm has a front or first end and a rear or second end, respectively. The first end of the first upper rear fork 151 is pivotally connected to the first link 13 by the third upper pivot 133, and the first end of the second upper rear fork 161 is pivotally connected to the first link 13 by the second upper pivot 132. The first end of the first lower rear fork 152 is pivotally connected to the second connector 14 by the third lower pivot 143, and the first end of the second lower rear fork 162 is pivotally connected to the second connector 14 by the second lower pivot 142. The second ends of the first upper rear fork 151 and the first lower rear fork 152 are pivotally connected to the rear wheel anchor 31 located inside one rear wheel. The second ends of the second upper rear fork 161 and the second lower rear fork 162 are pivotally connected to the rear wheel anchor 31 located inside the other rear wheel.

The first connector 13 and the second connector 14 are movable towards and away from each other in a substantially vertical direction. Preferably, the first and second connection joints 13 and 14 are in contact with each other when the child tricycle is in a normal use state, and the first and second connection joints 13 and 14 are separated from each other when the child tricycle is in a folded state. In addition, a locking member 6 may preferably be provided to lock the first connector 13 and the second connector 14 together during normal use. When folding is required, the locking member 6 can be released.

When the child tricycle according to the first embodiment of the present invention is to be folded, the locking member 6 is released first, and the first coupling head 13 and the second coupling head 14 are separated by hand, so that the first girder 11, the first upper rear fork 151 and the second upper rear fork 161 move together with the first coupling head 13 in a first direction and gradually gather inward, while the second girder 12, the first lower rear fork 152 and the second lower rear fork 162 move together with the second coupling head 14 in a second direction opposite to the first direction and gradually gather inward. The frame body 1 is finally brought into a folded state in which the first girder 11, the first upper rear fork arm 151, the second upper rear fork arm 161, the second girder 12, the first lower rear fork arm 152 and the second lower rear fork arm 162 are adjacent to each other and substantially parallel to each other, thereby forming a compact folded state. At the same time, the remaining parts of the child tricycle (e.g., the steering assembly 2, the seat assembly 4) are also folded inwardly along with the folding movement of the frame body 1, respectively. Thus, the folding process of the whole tricycle for children is completed.

When the child tricycle is to be unfolded from the folded condition to the normal use condition, the seat assembly 4 of the child tricycle may be unfolded first, and the steering assembly 2 and the first upper rear fork 151 or the second upper rear fork 161 may be unfolded outwardly with two hands, respectively. During deployment, the first and second connectors 13, 14 move toward each other, causing the first boom 11, the first upper rear rail 151, the second upper rear rail 161, the second boom 12, the first lower rear rail 152, and the second lower rear rail 162 to also follow the movement of the first and second connectors 13, 14, thereby deploying in place. Finally, the locking piece 6 is locked, so that the child tricycle can be in a normal use state.

As will be mentioned hereinafter, the parts of the child's tricycle are, after folding, the rear wheel assembly, the frame body 1, the steering assembly 2, the front wheel assembly, and the seat assembly 4, respectively, from bottom to top.

A foldable child tricycle according to a second embodiment of the present invention will be described below with reference to fig. 7-13. Unlike the first embodiment described above, the foldable child tricycle according to the second embodiment of the present invention further includes a push rod assembly 7. The push rod assembly 7 can be used by an adult as a conventional push rod assembly. More importantly, in the present invention, the push rod assembly 7 also serves to provide guidance for the folding of the child's tricycle.

The push rod assembly 7 mainly comprises a handle 73 and a push rod. The push rod is preferably telescopic. The first connector 13 is provided with a through hole 71 through which the push rod passes, and the second connector 14 is provided with a connection pipe 72 engageable with the push rod. Thus, the first connector 13 is slidable relative to the push rod, while the second connector 14 is fixed relative to the push rod. The push rod has a proximal end (i.e. the end where the handle 73 is provided) and a distal end (i.e. the end connected to the second connector 14).

The folding process of the child tricycle according to the second embodiment of the present invention is as follows. The push rod is first shortened and the locking element 6 is released. The first connector 13 and the second connector 14 are then separated by hand. Then, the first girder 11, the first upper rear fork 151 and the second upper rear fork 161 are moved along the push rod along the proximal end of the push rod together with the first coupling head 13 and gradually gathered inwardly toward the push rod, while the second girder 12, the first lower rear fork 152 and the second lower rear fork 162 are gradually gathered inwardly from the second coupling head 14 toward the push rod at the distal end of the push rod. The frame body 1 is finally brought into a collapsed state in which the first girder 11, the first upper rear fork arm 151, the second upper rear fork arm 161, the second girder 12, the first lower rear fork arm 152 and the second lower rear fork arm 162 are very close to the push rod and substantially parallel to the push rod, thereby forming a compact collapsed state. At the same time, the remaining components of the child tricycle (e.g., steering assembly 2, seat assembly 4) are also folded inwardly in sequence as the frame body 1 moves. Thus, the folding process of the whole tricycle for children is completed.

Fig. 9 shows the child tricycle after folding. As can be seen, the parts of the child tricycle are, after folding, the rear wheel assembly, the frame body 1, the steering assembly 2, the front wheel assembly, and the seat assembly 4, respectively, from bottom to top.

The foldable child tricycle according to the preferred embodiment of the present invention is described above. It should be understood that the concepts of the present invention with respect to folding structures are not limited to child tricycles, but are more broadly applicable to products such as child carts, strollers, and the like. Accordingly, one front wheel may be changed into two or more front wheels, or the steering assembly and pedals may be removed, and at least one universal wheel may be used as the front wheels, if desired.

The frame body of the foldable stroller of the present invention is also variable. For example, the first rear fork 15 including the first upper rear fork 151 and the first lower rear fork 152 and the second rear fork 16 including the second upper rear fork 161 and the second lower rear fork 162 in the above-described embodiments may take the form of a single piece or may take the form of a single piece having multiple segments. For example, the first girder 11 and the second girder 12 in the above-described embodiment may be simplified as one. In other words, a configuration in which one girder is provided with two rear fork bars, and one girder is provided with four or more rear fork bars may be formed.

The connection blocks, connectors, pivot joints, locking members, etc. used in the present invention are well known to those skilled in the art, but other arrangements may be used. For example, in the above embodiment, the first ends of the first and second longerons 11 and 12 are pivotally connected to two connection blocks, respectively, but it is also possible to pivotally connect the first ends of the first and second longerons 11 and 12 to one connection block. It should be understood that the term "head tube" as used herein is intended to encompass a variety of connection structures.

While the invention has been described in detail, it should be understood that variations may be made by those skilled in the art based on the foregoing disclosure. Accordingly, the scope of the invention is limited only by the attached claims.

The following is a description of the various reference numerals:

1, a frame main body

2 Steering assembly

3 Rear wheel

Seat assembly

5 Connecting block

6 Locking piece

7 Push rod assembly

11 First girder

12 Second girder

13 First connector

14 Second connector

15 First rear fork arm

16 Second rear fork arm

21 Handle

22 Head pipe

23 Front fork

24 Front wheel

25 Pedal

31 Rear wheel fixing seat

41 Pedal

51 Upper connecting block

52 Lower connecting block

71 Through hole

72 Connecting pipe

73 Handle

131 First upper pin joint

132 Second upper pin joint

133 Third upper pivot joint

141 First lower pin joint

142 Second lower pin joint

143 Third lower pin joint

151 First upper rear fork arm

152 First lower rear fork arm

161 Second upper rear fork arm

162 Second lower rear fork arm

Claims

1. A collapsible pushchair having an unfolded state and a folded state, the pushchair comprising a frame body, a front wheel assembly arranged in front of the frame body and comprising at least one front wheel, a rear wheel assembly arranged in rear of the frame body and comprising at least two rear wheels, and a pivotally collapsible seat assembly arranged in an upper part of the frame body, wherein the frame body comprises a head tube, at least one girder having a first end and a second end, the first end of the girder being pivotally connected to the head tube, at least one connector, the second end of the girder being pivotally connected to the connector, at least two rear fork arms having a first end and a second end, the first ends of the rear fork arms being pivotally connected to the connector, the second ends of the rear fork arms being connected to the rear wheel assembly,

Wherein the at least one girder comprises a first girder and a second girder, first ends of the first girder and the second girder are pivotally connected to the head pipe through at least one connection block, the at least one connection block comprises a first connection head and a second connection head, the first connection head and the second connection head can be contacted with and separated from each other, second ends of the first girder and the second girder are pivotally connected to the first connection head and the second connection head respectively,

And a locking member for locking the first connector and the second connector together in normal use, and for being released when folding is required.

2. A collapsible pushchair according to claim 1, wherein the first connector has a first upper pivot, a second upper pivot and a third upper pivot each oriented in a different direction, and the second connector has a first lower pivot, a second lower pivot and a third lower pivot each oriented in a different direction, wherein the second end of the first boom is pivotally connected to the first connector by the first upper pivot and the second end of the second boom is pivotally connected to the second connector by the first lower pivot.

3. The foldable stroller of claim 1, wherein the at least two rear fork arms comprise a first rear fork arm and a second rear fork arm, the first rear fork arm comprising a first upper rear fork arm and a first lower rear fork arm, the second rear fork arm comprising a second upper rear fork arm and a second lower rear fork arm.

4. A collapsible pushchair according to claim 2, wherein the at least two rear forks comprise a first rear fork and a second rear fork, the first rear fork comprising a first upper rear fork and a first lower rear fork, the second rear fork comprising a second upper rear fork and a second lower rear fork, each rear fork having a first end and a second end, the first end of the first upper rear fork being pivotally connected to the first connector by the third upper pivot, the first end of the second upper rear fork being pivotally connected to the first connector by the second upper pivot, the first end of the first lower rear fork being pivotally connected to the second connector by the third lower pivot, the first end of the second lower rear fork being pivotally connected to the second connector by the second lower pivot, the second ends of the first upper rear fork and the first lower rear fork being pivotally connected to the second rear wheel inboard of the rear wheel and the second rear wheel inboard of the second rear wheel and the fixed seat.

5. A collapsible pushchair according to claim 1, further comprising a push rod assembly for providing guidance for the collapse of the collapsible pushchair.

6. A collapsible pushchair according to claim 5, wherein the pushbar assembly comprises a pushbar, the first connector being slidable relative to the pushbar and the second connector being fixed relative to the pushbar.

7. A collapsible child vehicle according to any preceding claim, wherein the collapsible child vehicle is a collapsible child tricycle comprising one front wheel provided at the front of the frame body, two rear wheels provided at the rear of the frame body, and a steering assembly provided at the front of the frame body.

8. The foldable child's vehicle of claim 7, wherein the foldable child's tricycle further comprises pedals for driving the front wheels and/or pedals secured to the frame body.

9. The foldable child's vehicle of claim 7, wherein the portions of the foldable child's tricycle are, after folding, the rear wheel assembly, the frame body, the steering assembly and the front wheel assembly, and the seat assembly, respectively, from bottom to top.

10. A foldable frame for a foldable stroller, the frame comprising:

A head pipe;

A first girder and a second girder having a first end and a second end, respectively, the first end of the first girder being pivotally connected to the head pipe and the first end of the second girder being pivotally connected to the head pipe;

A first joint having a first upper pivot, a second upper pivot, and a third upper pivot, respectively, in different directions, and a second joint having a first lower pivot, a second lower pivot, and a third lower pivot, respectively, in different directions, the second end of the first girder being pivotally connected to the first joint through the first upper pivot, the second end of the second girder being pivotally connected to the second joint through the first lower pivot, the first joint and the second joint being movable toward or away from each other so as to be in contact with and separated from each other, the frame further including a locking member that locks the first joint and the second joint together in normal use, and that is released when folding is required, and

The first rear fork rod comprises a first upper rear fork rod and a first lower rear fork rod, the second rear fork rod comprises a second upper rear fork rod and a second lower rear fork rod, each rear fork rod is provided with a first end and a second end, the first end of the first upper rear fork rod is pivotally connected to the first connecting joint through the third upper pivot joint, the first end of the second upper rear fork rod is pivotally connected to the first connecting joint through the second upper pivot joint, the first end of the first lower rear fork rod is pivotally connected to the second connecting joint through the third lower pivot joint, the first end of the second lower rear fork rod is pivotally connected to the second connecting joint through the second lower pivot joint, the second ends of the first upper rear fork rod and the first lower rear fork rod are pivotally connected to a rear wheel fixing seat positioned on the inner side of one rear wheel, and the second upper rear fork rod and the second lower rear fork rod are pivotally connected to a rear wheel fixing seat positioned on the inner side of the other rear wheel.

11. The foldable carriage of claim 10, further comprising a push rod assembly, the push rod assembly comprising a telescoping push rod, the first connector being slidable relative to the push rod and the second connector being fixed relative to the push rod.