CN106741101B

CN106741101B - Child cart

Info

Publication number: CN106741101B
Application number: CN201611233987.7A
Authority: CN
Inventors: 顾小聪; 张金鑫
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2016-12-28
Filing date: 2016-12-28
Publication date: 2023-04-21
Anticipated expiration: 2036-12-28
Also published as: CN106741101A

Abstract

The invention discloses a children handcart, wherein a frame only comprises a front support, a rear support, a first connecting rod, a second connecting rod, a push rod and a swing rod, when the frame is folded, the lower part of the push rod is only required to be driven to move forwards to drive the first connecting rod and the second connecting rod to respectively turn forwards relative to the front support, so that the push rod, the first connecting rod and the second connecting rod gradually face the front support to fold, the front support turns relative to the rear support to fold, and all the rods on the frame are folded together in a relatively rotating manner, thereby realizing folding of the frame. The child trolley has the advantages that the number of the rods is small, the frame structure in the unfolded state is simple, elegant and attractive, and the rigidity is good; the rods on the folded frame are tightly folded together to form a very compact and flat structure, and the operation and the use are very convenient.

Description

Child cart

Technical Field

The invention relates to a child stroller.

Background

In the prior art, carts are of various types and structures and generally comprise a collapsible cart frame, a wheel assembly provided at the bottom of the cart frame, and a locking mechanism for locking the cart frame in an extended condition. At present, the cart frames are various in types, the number of the rods is different, and the connection relation and the connection position between the rods are different, so that the folding principle and the folding mode of the cart frames are different. It has been a goal of those skilled in the art to improve the stability of the stroller frame when unfolded, and to simplify the structure and folding and unfolding operations of the stroller frame, and to reduce the folded volume of the frame as much as possible.

Disclosure of Invention

The invention aims to provide a novel structural form of the child cart, which has the advantages of small number of rods, simple and attractive structure, compact structure after folding and convenient operation.

In order to achieve the above purpose, the invention adopts the following technical scheme: a children's barrow comprises a frame with an unfolding state and a folding state, a front wheel assembly and a rear wheel assembly arranged at the bottom of the frame, and a locking mechanism for locking the frame in the unfolding state, the frame comprises a front bracket, a rear bracket, a push rod, a first connecting rod, a swing rod, a first connecting rod, a swing rod, a second connecting rod, a first connecting rod, a second connecting rod and a second connecting rod, wherein the front bracket extends from front to back gradually in an upward tilting mode, the front bracket is arranged at the bottom of the front bracket, the front part of the front bracket extends obliquely in the front-back direction, the front part of the front bracket is connected with the front pivot, the rear bracket is arranged at the rear part of the rear bracket, the push rod extends obliquely in the front-back direction, the first connecting rod extends in the up-down direction and is connected with the front bracket in a pivot mode, the swing rod is connected with the lower part of the first connecting rod in a pivot mode, the lower part of the swing rod is connected with the rear bracket in a pivot mode, the upper part of the first connecting rod is connected with the push rod in a pivot mode,

the frame also comprises a second connecting rod extending along the up-down direction, the second connecting rod is positioned at the front side or the rear side of the first connecting rod, the upper part of the second connecting rod is pivotally connected to the push rod, the lower part of the second connecting rod is pivotally connected to the front support, and when the frame is folded, the push rod, the first connecting rod, the second connecting rod, the swing rod and the front support relatively rotate and gradually retract to the upper part of the rear support.

Preferably, the first connecting rod is intersected with the front bracket and is pivotally connected at the intersection, and the swing rod is positioned below the first connecting rod.

Further, when the frame is in a unfolded state, the first connecting rod and the swing rod extend along the same length direction.

Preferably, the first link is located at a front side of the second link, and an upper portion of the first link is pivotally connected to a lower portion of the push rod, and a lower portion of the second link is pivotally connected to an upper portion of the front bracket.

Preferably, the first link is pivotally connected to the front bracket via a first shaft, and the front portion of the rear bracket is pivotally connected to the front bracket via a second shaft, the second shaft being located below the first shaft on the front bracket.

Further, the lower part of the second connecting rod is pivotally connected with the front bracket through a third shaft, and the third shaft is positioned above the first shaft on the front bracket.

Further, the upper part of the first connecting rod is pivotally connected with the push rod through a fourth shaft, the upper part of the second connecting rod is pivotally connected with the push rod through a fifth shaft, and the fifth shaft is positioned on the rear side of the fourth shaft on the push rod.

As a specific embodiment, a parallelogram mechanism is formed among the first shaft, the third shaft, the fifth shaft and the fourth shaft.

Preferably, when the frame is folded, the lower part of the push rod moves forward to drive the first connecting rod and the second connecting rod to turn forward relative to the front support respectively, so that the push rod, the first connecting rod and the second connecting rod gradually face the front support to be folded, and the front support turns over relative to the rear support to be folded.

Further, in the process of converting the frame from the unfolded state to the folded state, the distance between the front wheel assembly and the rear wheel assembly along the front-rear direction is continuously increased.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the frame of the children cart only comprises the front support, the rear support, the first connecting rod, the second connecting rod, the push rod and the swing rod, the number of the rod pieces is small, and the frame in the unfolded state is simple, elegant and attractive in structure and has good rigidity; the rods on the folded frame are tightly folded together to form a very compact and flat structure, and the operation and the use are very convenient.

Drawings

FIG. 1 is a side view of a stroller according to the present invention in an expanded configuration;

FIG. 2 is a side view of the child stroller in a semi-collapsed condition according to the present invention;

FIG. 3 is a side view of the child stroller of the present invention in a collapsed condition;

wherein: 1. a front bracket; 2. a rear bracket; 3. a first link; 4. a second link; 5. a push rod; 6. swing rod; 7. a front wheel assembly; 8. a rear wheel assembly;

11. a first shaft; 12. a second shaft; 13. a third shaft; 14. a fourth shaft; 15. a fifth shaft; 16. a sixth shaft; 17. and a seventh axis.

Detailed Description

The technical scheme of the invention is further described below with reference to the attached drawings and specific embodiments.

Referring to the stroller shown in fig. 1-3, the stroller comprises a frame having an expanded state and a collapsed state, a front wheel assembly 7 disposed at a front portion of a bottom of the frame, a rear wheel assembly 8 disposed at a rear portion of the bottom of the frame, and a locking mechanism for locking the frame in the expanded state.

Referring to fig. 1 to 3, the frame comprises a front bracket 1, a rear bracket 2, a first connecting rod 3, a second connecting rod 4, a push rod 5 and a swing rod 6, wherein the front bracket 1 gradually inclines upwards from front to back, and a front wheel assembly 7 is arranged at the bottom of the front bracket 1; the rear bracket 2 extends obliquely along the front-rear direction, the front part of the rear bracket 2 is pivotally connected to the front bracket 1, and the rear wheel assembly 8 is arranged at the rear part of the rear bracket 2; the push rod 5 extends obliquely in the front-rear direction, and specifically, the push rod 5 is gradually inclined upward from front to rear.

The first link 3, the second link 4 and the swing link 6 extend in the up-down direction, respectively, and in this embodiment, the first link 3 is disposed in front of the second link 4. The first connecting rod 3 is pivotally connected to the front bracket 1, the upper part of the first connecting rod 3 is pivotally connected to the lower part of the push rod 5, the lower part of the first connecting rod 3 is pivotally connected to the upper part of the swing rod 6, and the lower part of the swing rod 6 is pivotally connected to the rear bracket 2; the upper part of the second link 4 is pivotally connected to the push rod 5 and the lower part of the second link 4 is pivotally connected to the upper part of the front bracket 1.

On the frame, a four-bar linkage structure is formed among the front bracket 1, the rear bracket 2, the first connecting bar 3 and the swing bar 6, and another four-bar linkage is formed among the first connecting bar 3, the push bar 5, the second connecting bar 4 and the front bracket 1, so that the frame is unfolded and folded through the relative rotation of each bar in the two four-bar linkages.

Specifically, referring to fig. 1, the first link 3 is disposed to cross the front bracket 1 and both are pivotally connected at the crossing point by a first shaft 11; the rear bracket 2 gradually inclines upwards from back to front, the front part of the rear bracket 2 is pivotally connected to the front bracket 1 through a second shaft 12, and the second shaft 12 is positioned below the first shaft 11 on the front bracket 1; the lower part of the second link 4 is pivotally connected to the upper part of the front bracket 1 by a third shaft 13, which third shaft 13 is located above the first shaft 11 on the front bracket 1.

The upper portion of the first connecting rod 3 is pivotally connected with the lower portion of the push rod 5 through a fourth shaft 14, the upper portion of the second connecting rod 4 is pivotally connected with the push rod 5 through a fifth shaft 15, in this embodiment, a parallelogram mechanism is formed among the first shaft 11, the third shaft 13, the fifth shaft 15 and the fourth shaft 14, when the frame is in an unfolding state, the first connecting rod 3 is parallel to the second connecting rod 4, and the push rod 5 is parallel to the front bracket 1, so that the whole structure of the frame is concise and attractive, and the structure of each rod after being folded relatively is kept flat when the frame is folded.

Referring to fig. 1, the swing link 6 is located right below the first link 3, the upper portion of the swing link 6 is pivotally connected to the lower portion of the first link 3 through a sixth shaft 16, and the lower portion of the swing link 6 is pivotally connected to the rear bracket 2 through a seventh shaft 17. When the frame is in a unfolding state, the swing rod 6 and the first connecting rod 3 extend along the same length direction, and a stable triangle structure is formed among the front bracket 1, the rear bracket 2, the swing rod 6 and the first connecting rod 3, so that the frame has good stability in the unfolding state.

Referring to fig. 1, when the stroller is unfolded for use, the frame is locked in an unfolded state by the locking mechanism, and at this time, the first connecting rod 3 and the second connecting rod 4 are parallel to each other, and the push rod 5 and the front bracket 1 are parallel to each other; the front bracket 1, the rear bracket 2, the first connecting rod 3 and the swing rod 6 form a stable triangle structure, the front wheel assembly 7 and the rear wheel assembly 8 are supported on the ground and realize the integral support of the frame, and the integral structure of the frame is concise and elegant and has good bearing stability.

When the child stroller needs to be folded, referring to fig. 2, the locking mechanism of the stroller frame is unlocked, and an operator pushes the push rod 5 forwards in the rear direction of the stroller frame, so that the lower part of the push rod 5 moves forwards and downwards, and the first connecting rod 3 and the second connecting rod 4 are driven to rotate relative to the front bracket 1 respectively and turn forwards; the first connecting rod 3 turns forward around the first axis 11 relative to the front bracket 1, and at the same time, the lower part of the first connecting rod 3 moves backward to drive the upper part of the swing rod 6 to move backward, so that the swing rod 6 turns backward around the seventh axis 17 relative to the rear bracket 2, the front bracket 1 and the rear bracket 2 rotate relatively to be gradually folded along the up-down direction, and the distance between the front wheel assembly 7 and the rear wheel assembly 8 along the front-rear direction is continuously increased in the process of gradually folding the front bracket 1 and the rear bracket 2 along the up-down direction.

Finally, the push rod 5, the first connecting rod 3, the second connecting rod 4, the front support 1 and the swing rod 6 are mutually folded together and are close to the upper part of the rear support 2 to form a flat structure as shown in fig. 3, the structure is quite smooth, the occupied space is small, and great convenience is brought to daily use of users.

Of course, in other embodiments, the positions of the first link 3 and the second link 4 may be exchanged, that is, the first link 3 is disposed behind the second link 4, specifically: the upper part of the second link 4 is pivotally connected to the lower part of the push rod 5 and the lower part thereof is pivotally connected to the front bracket 1, and the first link 3 is pivotally connected to the upper part of the front bracket 1, and the upper part of the first link 3 is pivotally connected to the push rod 5 and the lower part thereof is pivotally connected to the upper part of the swing link 6. The same principle of unfolding and folding of the frame can be realized by the structure, but the size of the folded frame along the front-back direction is slightly larger than that of the folded frame in the embodiment due to the backward swinging of the swinging rod 6 in the folding process.

In summary, the frame of the children's barrow only comprises a front support 1, a rear support 2, a first connecting rod 3, a second connecting rod 4, a push rod 5 and a swinging rod 6, and the children's barrow has the advantages of small number of rods, simple, elegant and attractive frame structure in an unfolded state and good rigidity; the rods on the folded frame are tightly folded together to form a very compact and flat structure, and the operation and the use are very convenient.

The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. The utility model provides a children's shallow, includes the frame that has the expanded state and folding state, locates front wheel subassembly and rear wheel subassembly of frame bottom, and be used for locking mechanical system with the frame is in the expanded state, its characterized in that: the frame comprises a front support, a rear support, a push rod, a first connecting rod, a swing rod, a upper portion, a swing rod and a first connecting rod, wherein the front support is gradually upwards inclined from front to back, the front support is provided with the front wheel assembly at the bottom, the front support is obliquely extended along the front-back direction, the front pivot is connected to the front support, the rear support is provided with the rear wheel assembly at the rear part, the first connecting rod is obliquely extended along the front-back direction, the first connecting rod is extended along the up-down direction and is pivoted with the front support, the upper portion of the first connecting rod is pivoted with the lower portion of the first connecting rod and is pivoted with the rear support, the upper portion of the first connecting rod is pivoted with the push rod, the first connecting rod is intersected with the front support and is pivoted with the first connecting rod around a first shaft at the intersection, the swing rod is positioned below the first connecting rod, and when the frame is in an unfolding state, the first connecting rod and the swing rod extend along the same length direction; the front part of the rear bracket is pivotally connected with the front bracket through a second shaft, the second shaft is positioned below the first shaft on the front bracket,

the frame also comprises a second connecting rod extending along the up-down direction, the second connecting rod is positioned at the front side or the rear side of the first connecting rod, the upper part of the second connecting rod is pivotally connected to the push rod, the lower part of the second connecting rod is pivotally connected to the front support, when the frame is folded, the push rod, the first connecting rod, the second connecting rod, the swing rod and the front support relatively rotate and gradually retract to the upper part of the rear support, and the distance between the front wheel assembly and the rear wheel assembly along the front-rear direction is continuously increased.

2. The stroller of claim 1, wherein: the first connecting rod is positioned at the front side of the second connecting rod, the upper part of the first connecting rod is in pivot connection with the lower part of the push rod, and the lower part of the second connecting rod is in pivot connection with the upper part of the front bracket.

3. The stroller of claim 1, wherein: the lower part of the second connecting rod is pivotally connected with the front bracket through a third shaft, and the third shaft is positioned above the first shaft on the front bracket.

4. A stroller according to claim 3, wherein: the upper part of the first connecting rod is pivotally connected with the push rod through a fourth shaft, the upper part of the second connecting rod is pivotally connected with the push rod through a fifth shaft, and the fifth shaft is positioned on the push rod and at the rear side of the fourth shaft.

5. The stroller of claim 4, wherein: a parallelogram mechanism is formed among the first shaft, the third shaft, the fifth shaft and the fourth shaft.

6. A stroller according to any one of claims 1 to 5, wherein: when the frame is folded, the lower part of the push rod moves forwards to drive the first connecting rod and the second connecting rod to turn forwards relative to the front support respectively, so that the push rod, the first connecting rod and the second connecting rod gradually face the front support to be folded, and the front support turns upwards relative to the rear support to be folded.