CN214028810U

CN214028810U - Portable folding cart

Info

Publication number: CN214028810U
Application number: CN202023337273.5U
Authority: CN
Inventors: 吴春华
Original assignee: Jiaxing Xiaohuzi Bike Factory Co ltd
Current assignee: Jiaxing Xiaohuzi Bike Factory Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-24
Anticipated expiration: 2030-12-31

Abstract

The utility model provides a portable folding shallow, include: the vehicle-mounted push rod assembly comprises a frame assembly, a push rod assembly, a seat assembly and a wheel assembly, wherein the push rod assembly is arranged on the rear side of the frame assembly and comprises an upper push rod, a lower push rod and a handle, the seat assembly is arranged on the upper portion of the frame assembly, and the wheel assembly is rotatably connected to the lower portion of the frame assembly. The frame assembly comprises a girder rod, a first support and a second support, wherein the first support and the second support are pivotally connected to the girder rod through a first pivot joint and are pivotally connected to a lower push rod of the push rod assembly through a second pivot joint. And a sliding connecting block which can slide along the lower push rod is arranged on the lower push rod, and the girder rod is pivotally connected to the sliding connecting block through a third pivot joint. The utility model discloses can be when making the structure simplify as far as possible, realized folding and expansion convenient operation, and folding back compact's portable folding shallow.

Description

Portable folding cart

Technical Field

The present application relates generally to the field of strollers for children, and more particularly, to a portable folding stroller.

Background

When parents take the infant for going out, the parents generally take the baby stroller. The conventional stroller is bulky, has no folding function or is still bulky after being folded, and thus is not suitable for long-distance or long-time family traveling. Therefore, portable folding strollers that are easily folded in the market have been widely used as baby transportation tools.

With the improvement of living standard, people have higher and higher requirements on the convenience of going out. Thus, the operability of the stroller when folded and the size of the folded volume are of concern to consumers. More specifically, in the case of a folding stroller, the better the linkage of the various components of the stroller, the easier the folding and unfolding operations, and vice versa, the more laborious the operations. As for the folded volume of the stroller, it is desirable that the folded volume of the stroller is as small as possible, so that the stroller can be carried on or off, even when it is carried on or off a plane. Even when stored in a home without use, the smaller the volume, the less space it takes.

The folding stroller in the prior art generally has a complex structure, a large volume after being folded, and poor operability. In other words, there is room for further improvement in several aspects of the products currently on the market.

CN110481623 discloses a folding stroller having an open state and a folded state. The folding stroller comprises a push rod, a front support and a rear support which are rotatably connected with each other. The folding stroller also comprises an upper surrounding rod, a side stay bar and a seat rod. The upper surrounding rod is rotatably connected with the push rod. The side supporting rods are rotatably connected with the rear support and can be connected with the upper enclosing rod in a relatively rotating and relatively sliding mode. The rear part of the seat post is directly or indirectly driven by the lower part of the side stay. When the folding seat is folded, the side stay bar rotates, the upper part of the side stay bar slides along the upper surrounding rod, and the lower part of the side stay bar drives the seat rod to rotate. After the whole vehicle is folded, the size is small and the carrying is convenient.

However, the foldable stroller of CN110481623 includes many additional components such as upper surrounding rod, side supporting rod and seat rod, which makes the structure of the stroller more complicated, and increases the weight and volume of the stroller after folding. In addition, the whole linkage folding mechanism is also complex, and the operation convenience is not strong.

CN211918801U also discloses a foldable stroller, especially a foldable frame structure thereof. The folding stroller comprises a frame, wherein the frame comprises a left side support and a right side support and a linkage mechanism connected between the two side supports. The linkage mechanism has an unfolded state and a folded state. Specifically, each side bracket comprises a front foot, a rear foot, a driver, a first connecting rod and a second connecting rod. The rear sides of the first connecting rod and the second connecting rod are pivoted to the lower side of the driver, and the front side of the second connecting rod is connected with the linkage mechanism. When the folding operation is carried out, the upper side of the driver is rotationally moved towards the rear lower part, so that the first connecting rod is driven to enable the linkage mechanism to be folded in a linkage manner, and the folding of the linkage mechanism drives the brackets at the two sides to be relatively close to each other. It is thought that the components of the stroller are smoothly linked when the stroller is folded, so that the stroller is easy and convenient to operate, has small volume after being folded, and is convenient to carry and store.

However, the folding stroller of CN211918801U still comprises many components, and has a problem of complicated structure. Moreover, such a folding stroller still has room for improvement in further reducing the volume after folding and further improving the folding operability.

SUMMERY OF THE UTILITY MODEL

To the problem above, an object of the utility model is to provide a simple structure, folding and expand convenient operation, folding back small portable folding shallow.

In order to achieve the above object, the utility model provides a portable folding shallow, include: the vehicle-mounted push rod assembly comprises a frame assembly, a push rod assembly, a seat assembly and a wheel assembly, wherein the push rod assembly is arranged on the rear side of the frame assembly and comprises an upper push rod, a lower push rod and a handle, the seat assembly is arranged on the upper portion of the frame assembly, and the wheel assembly is rotatably connected to the lower portion of the frame assembly. The frame assembly comprises a girder rod, a first support and a second support, wherein the first support and the second support are pivotally connected to the girder rod through a first pivot joint and are pivotally connected to a lower push rod of the push rod assembly through a second pivot joint. And a sliding connecting block which can slide along the lower push rod is arranged on the lower push rod, and the girder rod is pivotally connected to the sliding connecting block through a third pivot joint.

Preferably, the first pivot joint comprises: the upper connecting hole of the first bracket, the upper connecting hole of the second bracket and the upper shaft lever.

Preferably, the second pivot joint comprises: the lower connecting hole of the first bracket, the lower connecting hole of the second bracket and the lower shaft lever.

Preferably, the third pivot joint comprises: a connecting hole of the sliding connecting block, an upper end connecting hole of the girder rod and a pivot pin.

Preferably, the upper push rod of the push rod assembly is slidably installed in the lower push rod, and the push rod assembly further comprises a folding fixing block arranged at the lower end of the upper push rod and a folding fixing hole arranged at the upper end of the lower push rod.

Preferably, a folding button and a safety button are further provided on the upper push rod.

Preferably, the seat assembly is removably mounted to the rear end of the beam, the front end of the first bracket, the front end of the second bracket, and both sides of the handle of the push rod assembly.

Preferably, the seat assembly includes a flexible seat cover.

Preferably, a hook for hooking the seat cloth is provided on the handle of the push rod assembly.

Preferably, the wheel assembly includes a front wheel and a rear wheel, the front end of the girder rod is mounted with a pedal, the front wheel is rotatably mounted on the pedal, and the rear wheel is mounted at the rear ends of the first and second brackets.

The utility model discloses a portable folding shallow's structure is very simple, and especially its frame subassembly only includes the girder iron and controls the support, consequently makes component quantity minimizing, and makes whole structure compacter, light. More importantly, the utility model discloses can be when making the structure simplify as far as possible, realized a folding with expand convenient operation, and folding back compact's portable folding shallow.

Drawings

Fig. 1 is a perspective view of a portable folding cart according to a preferred embodiment of the present invention;

FIG. 2 is a side view of the portable folding cart of FIG. 1;

FIG. 3 is a front view of the portable folding cart of FIG. 1;

FIG. 4 is an exploded perspective view of the portable folding cart of FIG. 1;

FIG. 5A is a perspective view of a push rod assembly of the portable folding cart;

FIG. 5B is a cross-sectional view of the push rod assembly of the portable folding cart;

FIG. 6 is a perspective view of the push bar assembly of the portable folding cart with details of the operating portion shown enlarged;

FIG. 7 is a perspective view of the portable folding cart during folding; and

fig. 8 is a perspective view of the portable folding cart after folding is complete.

Detailed Description

The preferred embodiments of the present invention will hereinafter be described in conjunction with the appended drawings, where like designations denote like elements throughout.

The invention is best understood from the following detailed description when read in connection with the accompanying drawings, which illustrate exemplary embodiments of the invention, chosen for the purpose of illustration. The present invention will be described with reference to the accompanying drawings. The drawings are illustrative and not restrictive, and are included to facilitate explanation of the invention.

The description of the exemplary embodiments is intended to be read in connection with the accompanying drawings, which are to be considered part of the entire written description. In the description, relative terms such as "front," "back," "upper," "lower," "left," "right," "top" and "bottom" as well as derivatives thereof (e.g., "horizontal," "vertical," "downward," "upward"), and the like, are to be construed to refer to the orientation as then described or as shown in the drawing under discussion. These relative terms are for convenience of description and do not require that the apparatus be constructed or operated in a particular orientation. Terms concerning attachments, coupling and the like, such as "connected," "coupled," and "interconnected," refer to a relationship wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both removable or rigid attachments or relationships, unless expressly described otherwise. Additionally, the terms "comprises," "comprising," "includes," "including," and the like are intended to include but not be limited to the listed components or elements, i.e., there may be additional unspecified components or elements on top of the listed components or elements.

As shown in fig. 1 to 4, a portable folding cart according to a preferred embodiment of the present invention includes: a frame assembly 10, a push rod assembly 20 disposed at a rear side of the frame assembly 10 and including an upper push rod 5 and a lower push rod 3 and a handle, a seat assembly 30 disposed at an upper portion of the frame assembly 10, and a wheel assembly 40 rotatably connected to a lower portion of the frame assembly 10.

The frame assembly 10 mainly includes a girder 1, a first bracket (or right bracket) 21 and a second bracket (or left bracket) 22. The first bracket 21 and the second bracket 22 are pivotally connected to the girder bar 1, respectively, and are also pivotally connected to the push down levers 3 of the push lever assembly 20, respectively.

Specifically, the first bracket 21 has upper and lower coupling holes 211 and 212, and the second bracket has upper and lower coupling holes 221 and 222. The upper coupling hole 211 of the first bracket 21 and the upper coupling hole 221 of the second bracket are pivotally coupled to both sides of the girder bar 1 by the upper shaft 12, respectively. The upper connecting hole 211 of the first bracket 21, the upper connecting hole 221 of the second bracket 22 and the upper shaft rod 12 together form a first pivot joint. The lower coupling hole 212 of the first bracket 21 and the lower coupling hole 222 of the second bracket are pivotally coupled to both sides of the lower push rod 3 by the lower shaft 31, respectively. The lower connecting hole 212 of the first bracket 21, the lower connecting hole 222 of the second bracket 22 and the lower shaft 31 together constitute a second pivot joint.

In addition, a slide link block 33 is provided on the lower push rod 3, and the slide link block 33 is slidable up and down along the lower push rod 3. The slide connection block 33 has a connection hole 331 and the girder rod 1 has an upper end connection hole 11. The connection hole 331 of the slide connection block 33 is pivotally connected to the upper end connection hole 11 of the girder bar 1 by a pivot pin (not shown). The connecting hole 331 of the slide connecting block 33, the upper end connecting hole 11 of the girder rod 1 and the pivot pin together constitute a third pivot joint.

It will be appreciated that although the first, second and third pivot joints are described above as being formed by connecting holes, shafts or pivot pins, these are not the only forms of pivot joints. Various other variations may be employed as will be apparent to those skilled in the art. For example, for the first and second pivot joints, connecting rods/pins may alternatively be provided to the first and second brackets, and connecting holes to the spar; for the third pivot joint, a form of a connecting hole and a threaded shaft rod can also be adopted.

As shown in fig. 1-4 in conjunction with fig. 5A and 5B, the push rod assembly 20 includes an upper push rod 5, a lower push rod 3, and a handle. The upper push rod 5 is slidably mounted in the lower push rod 3. At the upper end of the lower push rod 3 there is a locking spanner 4, with which the upper push rod 5 can be locked relative to the lower push rod 3 when the upper push rod 5 is slid to a desired position relative to the lower push rod 3. Preferably, as is apparent from fig. 5A and 5B, a fold fixing block 51 may be provided at the lower end of the upper push rod 5, and a fold fixing hole 32 may be correspondingly provided at the upper end of the lower push rod 3. When the upper push rod 5 slides to the uppermost position with respect to the lower push rod 3, the fold fixing block 51 is just inserted into the fold fixing hole 32. A folding button 7 is also provided on the upper push rod 5 so that the upper push rod 5 can slide relative to the lower push rod 3. In addition, in order to meet relevant safety standards, a safety button 6 is also arranged on the upper push rod 5. Only when the safety button 6 is pressed, the folding button 7 can be pressed, thereby allowing the upper push rod 5 to slide relative to the lower push rod 3. The telescoping and securing mechanism of the push rod assembly 20 is similar to the telescoping pull rods used on conventional draw-bar boxes.

The seat assembly 30 is provided at an upper portion of the carriage assembly 10, and is preferably detachably mounted to a rear end of the girder 1, a front end of the first bracket 21, a front end of the second bracket 22, and both sides of the push bar handle, respectively. The seat assembly 30 preferably includes a flexible seat cloth 8 to facilitate folding of the entire portable folding cart.

Wheel assembly 40 is rotatably connected to the underside of frame assembly 10. In the preferred embodiment of the invention shown in the drawings, two front wheels 9 and two rear wheels 19, preferably universal wheels, are included. The front end of the girder 1 is provided with a pedal 18, and the two front wheels 9 are rotatably mounted on the pedal 18. Two rear wheels 19 are mounted at the rear ends of the first and

second brackets

21 and 22, respectively.

The folding operation of the portable folding cart of the present invention will be described below with reference to fig. 6 to 8.

As shown in fig. 6, and particularly in enlarged portions A, B and C of the drawing. First, the lock wrench 4 is opened, the safety button 6 is pressed, and the folding button 7 is pressed at the same time. After the folding button 7 is pressed, the folding fixing block 51 is retracted inward by the linkage mechanism inside the push rod assembly to be separated from the folding fixing hole 32 at the upper end of the lower push rod 3. At this time, the upper push rod 5 can be slid downwards in the lower push rod 3 until the end is reached, and then the locking wrench 4 is locked. During the contraction of the push rod assembly 20, the seat cloth 8 of the seat assembly 30 is also contracted and folded.

As shown in fig. 7, the first frame 21 and the second frame 22 are then manually turned upward (as indicated by arrows), and the first frame 21 and the second frame 22 are rotated relative to the lower push rod 3 about the second pivot joint. Because the girder 1 is pivotally connected to the first bracket 21 and the second bracket 22 through the first pivot joint, the girder 1 is driven by the first bracket 21 and the second bracket 22, and then the third pivot joint drives the lower push rod sliding block 33 to move upward along the lower push rod 3. Each turning action is continued until the girder 1, the first bracket 21, the second bracket 22 and the push down lever 3 approach and abut each other.

As shown in fig. 8, especially referring to the enlarged portion D of fig. 8, after the girder bar 1, the first bracket 21, the second bracket 22 and the push down bar 3 are brought close to and attached to each other, the seat cloth 8 may be hooked with a hook provided on a handle of the push bar, and the folded overall structure is further locked.

When the portable folding cart is to be unfolded from the folded state to the normal use state, the above steps are reversed.

The foregoing has described preferred embodiments in accordance with the present invention. It should be understood that the concept of the present invention as to a folding structure is not limited to portable folding carts, but is more broadly applicable to products such as children's tricycles, baby carts, etc.

While the invention has been described in detail in the foregoing for the purpose of illustration, it will be understood that various modifications may be made by those skilled in the art based on the above disclosure. For example, the number of front wheels and rear wheels is not limited to the two respective wheels described above, and the two front wheels may be changed to one or more than two front wheels, and the two rear wheels may be changed to one or more than two rear wheels. Accordingly, the scope of the invention is to be limited only by the following claims.

The following are descriptions of the various reference numbers:

1: girder rod

3: lower push rod

4: locking spanner

5: up-push block

6: safety button

7: folding button

8: seat cloth

9: front wheel

10: vehicle frame assembly

11: upper end connecting hole

12: upper shaft lever

18: pedal

19: rear wheel

20: push rod assembly

21: first support

22: second support

30: seat assembly

31: lower shaft lever

32: folding fixing hole

33: sliding connecting block

51: folding fixed block

211: (first support) Upper connection hole

212: (first support) lower connecting hole

221: (second bracket) Upper connection hole

222: (second support) lower connecting hole

331: (sliding connection block) connecting hole.

Claims

1. A portable folding cart comprising: a frame component (10), a push rod component (20) which is arranged at the rear side of the frame component and comprises an upper push rod (5), a lower push rod (3) and a handle, a seat component (30) which is arranged at the upper part of the frame component, and a wheel component (40) which is rotatablely connected to the lower part of the frame component,

characterized in that the frame assembly comprises a girder bar (1), a first bracket (21) and a second bracket (22), the first bracket and the second bracket are pivotally connected to the girder bar by a first pivot joint and pivotally connected to the lower push bar of the push bar assembly by a second pivot joint,

and a sliding connecting block (33) capable of sliding along the lower push rod is arranged on the lower push rod, and the girder rod is pivotally connected to the sliding connecting block through a third pivot joint.

2. The portable folding cart of claim 1, wherein said first pivot joint comprises: the upper connecting hole (211) of the first bracket (21), the upper connecting hole (221) of the second bracket (22) and the upper shaft rod (12).

3. The portable folding cart of claim 1, wherein said second pivot joint comprises: a lower connecting hole (212) of the first bracket (21), a lower connecting hole (222) of the second bracket (22) and a lower shaft lever (31).

4. The portable folding cart of claim 1, wherein said third pivot joint comprises: a connecting hole (331) of the sliding connecting block (33), an upper end connecting hole (11) of the girder rod (1), and a pivot pin.

5. The portable folding cart of claim 1, wherein an upper push rod (5) of said push rod assembly (20) is slidably mounted within said lower push rod (3), said push rod assembly further comprising a fold fixing block (51) disposed at a lower end of said upper push rod and a fold fixing hole (32) disposed at an upper end of said lower push rod.

6. The portable folding cart according to claim 5, characterized in that a folding button (7) and a safety button (6) are further provided on said upper push rod.

7. The portable folding cart of claim 1, characterized in that said seat assembly (30) is detachably mounted to the rear end of said girder (1), the front end of said first bracket (21), the front end of said second bracket (22), and both sides of the handle of said push rod assembly (20).

8. The portable folding cart of claim 1, wherein said seat assembly (30) comprises a flexible seat cloth (8).

9. The portable folding cart according to claim 8, characterized in that a hook for hooking the seat cloth (8) is provided on the handle of the push bar assembly (20).

10. The portable folding cart according to any of claims 1 to 9, wherein said wheel assembly (40) comprises a front wheel (9) and a rear wheel (19), said front end of said girder (1) being mounted with a pedal (18), said front wheel being rotatably mounted on said pedal, said rear wheel (19) being mounted at the rear end of said first bracket (21) and said second bracket (22).