CN212828623U

CN212828623U - Folding cart

Info

Publication number: CN212828623U
Application number: CN202020795733.XU
Authority: CN
Inventors: 顾小聪; 朱石磊
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2021-03-30
Anticipated expiration: 2030-05-14

Abstract

The utility model discloses a folding cart, the cart frame of which comprises a front support, a rear support, a push rod frame, a seat frame, a handrail frame and a connecting rod, the upper part of the front support is rotationally connected with the lower part of the push rod frame, the upper part of the rear support is rotationally connected on the front support, or the upper part of the front support, the lower part of the push rod frame and the upper part of the rear support are rotationally connected together, the handrail frame is rotationally connected on the front support, the front part of the seat frame is rotationally connected on the upper part of the handrail frame, and the rear part of the seat frame is rotationally connected on the push rod frame; the connecting rod is positioned below the seat frame and is rotationally connected between the lower part of the armrest frame and the rear support. When the cart frame is in a folded state, the front support, the rear support and the push rod frame are mutually folded, and the push rod frame and the seat frame are all folded on the front side of the front support. The structure of the cart frame in the unfolding state is very simple, and the folded cart frame is compact and flat in structure and can stand on the ground.

Description

Folding cart

Technical Field

The utility model relates to a folding shallow.

Background

In the prior art, the stroller has various structures, and generally includes a stroller frame having an unfolded state and a folded state, a wheel assembly disposed at the bottom of the stroller frame, and a locking mechanism for locking the stroller frame in the unfolded state. At present, the structure of children's shallow is various, and folding principle also is different. However, it is always the aim of those skilled in the art to reduce the number of the rods as much as possible on the premise of ensuring the bearing performance of the stroller frame, and to make the structure of the folded stroller frame as flat and compact as possible.

Disclosure of Invention

The utility model aims at providing a folding shallow of novel structure.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a folding cart comprises a cart frame with an unfolding state and a folding state, a front wheel component arranged at the front part of the cart frame bottom, a rear wheel component arranged at the rear part of the cart frame bottom, and a locking mechanism for locking the cart frame in an unfolded state, wherein the cart frame comprises a front support, a rear support, a push rod frame, a seat frame, a handrail frame and a connecting rod, the upper part of the front bracket is rotationally connected with the lower part of the push rod frame, the upper part of the rear bracket is rotationally connected with the front bracket, or the upper part of the front bracket, the lower part of the push rod frame and the upper part of the rear bracket are rotationally connected together around the same rotation center line, the armrest frame is rotationally connected to the front support, the front part of the seat frame is rotationally connected to the upper part of the armrest frame, and the rear part of the seat frame is rotationally connected to the push rod frame; the connecting rod is located the below of seat frame, one end of connecting rod with the lower part of handrail frame is connected with rotating, and its another tip is connected with rotating on the after-poppet, works as when shallow frame is in fold condition, fore-stock, after-poppet and push rod frame draw in each other, just the push rod frame with the seat frame all draws in the front side of fore-stock.

Preferably, a first four-bar linkage mechanism is formed among the front support, the rear support, the armrest frame and the connecting rods, and a second four-bar linkage mechanism is formed among the front support, the push rod assembly, the armrest frame and the seat frame.

Preferably, the rear bracket is provided with two groups of rear supporting rods which are respectively arranged on the left side and the right side and obliquely extend along the vertical direction, the rear supporting rods gradually extend inwards from bottom to top in the left-right direction, and the upper parts of the two rear supporting rods are rotationally connected with the upper part of the front bracket and the lower part of the push rod frame around the same rotating shaft.

Furthermore, the rear support also comprises a cross rod fixedly connected between the two groups of rear supporting rods, and the rear part of the connecting rod is rotatably connected to the cross rod around the axis of the cross rod.

Further, the front support has a front rod extending obliquely upward from front to back, the push rod support has a push rod extending obliquely upward from front to back, and the upper end portions of the front rod, the lower end portions of the push rods, and the upper end portions of the two rear rods are rotatably connected together around a first axis.

Furthermore, the axis of the first shaft is located in front of the axis of the front support rod and the axis of the push rod.

Preferably, the seat frame comprises a seat plate extending along the front-back direction and a seat plate connecting rod fixed at the rear part of the seat plate and extending upwards and backwards, the seat frame is rotatably connected with the push rod frame through the seat plate connecting rod, and the seat plate connecting rod is parallel to the length extending direction of the push rod frame in the unfolded state of the stroller frame.

Preferably, the handrail frame is rotationally connected on the front support through a second shaft, the upper portion of the handrail frame is rotationally connected with the front portion of the seat frame through a third shaft, the lower portion of the handrail frame is rotationally connected with the connecting rod through a fourth shaft, and the second shaft is located between the third shaft and the fourth shaft.

Preferably, the grab rail has a stopper rod extending in the vertical direction, and a grab rail fixedly provided at an upper end portion of the stopper rod and extending in the horizontal direction, the grab rail being higher than the seat frame in the height direction.

Further, the front support has a front rod extending obliquely upward from front to back, and the two stop rods are respectively connected to the left and right sides of the front rod.

Preferably, the push rod frame comprises a push rod and a push handle rod fixed at the top of the push rod and extending in the left-right direction, when the stroller frame is in a folded state, the front wheel assembly and the rear wheel assembly are mutually folded, and the front wheel assembly and the push handle rod are supported on the ground so that the stroller frame can stand on the ground.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model discloses a folding shallow, its shallow frame only include fore-stock, after-poppet, push rod frame, seat frame, handrail frame and connecting rod, and the structure under the shallow frame expansion state is very succinct, orders about the push rod frame and overturn forward alright make whole car fold up, and folding principle is simple. The folded cart frame has a compact and flat structure, can stand on the ground, and brings convenience for daily use of users.

Drawings

Fig. 1 is a perspective view of the foldable cart of the present invention in an unfolded state;

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

fig. 3 is a schematic view of the folding operation principle of the folding cart of the present invention;

fig. 4 is a schematic view of the folding process of the folding cart according to the present invention;

fig. 5 is a schematic diagram two in the folding process of the folding cart of the present invention;

fig. 6 is a side view of the folding cart of the present invention in a folded state;

wherein: 1. a front bracket; 11. a front support rod; 10. a front wheel assembly; 2. a rear bracket; 21. a rear support rod; 22. a cross bar; 20. a rear wheel assembly; 3. a push rod frame; 31. a push rod; 32. a handle pushing rod; 4. a seat frame; 41. a seat plate; 42. a seat plate connecting rod; 5. a handrail frame; 51. a gear lever; 52. a handrail; 6. a connecting rod;

101. a first shaft; 102. a second shaft; 103. a third axis; 104. a fourth axis; 105. and a fifth shaft.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

The following directional terms with respect to front, rear, left, right, up, down, etc. are defined with reference to the orientation as viewed by a user when the stroller frame is in the unfolded position.

Referring to fig. 1 to 6, the folding stroller includes a stroller frame having an unfolded state and a folded state, a front wheel assembly 10 provided at a bottom portion of the stroller frame, a rear wheel assembly 20 provided at a rear portion of the bottom portion of the stroller frame, and a locking mechanism for locking the stroller frame in the unfolded state.

The cart frame comprises a front support 1, a rear support 2, a push rod frame 3, a seat frame 4, a handrail frame 5 and a connecting rod 6, wherein the upper part of the front support 1 is rotationally connected with the lower part of the push rod frame 3, and the upper part of the rear support 2 is rotationally connected on the front support 1; alternatively, the upper part of the front frame 1, the lower part of the push rod frame 3 and the upper part of the rear frame 2 are rotatably connected together around the same rotation center line. The armrest frame 5 is rotatably connected to the front frame 1, the front part of the seat frame 4 is rotatably connected to the upper part of the armrest frame 5, the rear part of the seat frame 4 is rotatably connected to the push rod frame 3, the link 6 is located below the seat frame 4, one end of the link 6 is rotatably connected to the lower part of the armrest frame 5, and the other end of the link 6 is rotatably connected to the rear frame 2. On the frame of the cart, a first four-bar linkage mechanism is formed among the front support 1, the rear support 2, the handrail frame 5 and the connecting rod 6, and a second four-bar linkage mechanism is formed among the front support 1, the push rod frame 3, the handrail frame 5 and the seat frame 4.

Specifically, referring to fig. 1 and 2, in the cart frame, the rear frame 2 includes two sets of rear stays 21 provided on the left and right sides and extending obliquely in the vertical direction, and a cross bar 22 fixedly connected between the two sets of rear stays 21. Each rear strut 21 extends gradually inward from the bottom to the top in the left-right direction, and the upper parts of the two rear struts 21 are rotatably connected with the upper part of the front bracket 1 and the lower part of the push rod bracket 3 around the same rotating shaft. The rear wheel assemblies 20 are provided in two sets, respectively, at the bottoms of the two sets of rear struts 21.

The front bracket 1 comprises a front support rod 11 which gradually extends upwards in an inclined way from front to back, and a front wheel assembly 10 is arranged at the bottom of the front support rod 11; the push rod frame 3 includes a push rod 31 extending obliquely upward from front to back, and a push handle bar 32 fixed to the top of the push rod 31 and extending in the left-right direction. The upper part of the front strut 11, the lower part of the push rod 31 and the upper parts of the two sets of rear struts 21 are connected together to rotate around the first shaft 101. In the present embodiment, in the unfolded state of the stroller frame, the axis of the first shaft 101 is located forward of the axes of the front stay 11 and the push rod 31 in the front-rear direction.

The armrest frame 5 includes a stopper rod 51 extending in the vertical direction, and an armrest 52 fixedly provided at an upper end portion of the stopper rod 51 and extending in the lateral direction, and the armrest 52 is higher than the seat frame 4 in the height direction. Here, two shift levers 51 are provided, respectively located on the left and right sides of the front stay 11; correspondingly, two connecting rods 6 are also provided. The gear rod 51 of the armrest frame 5 is rotationally connected with the front support rod 11 through a second shaft 102, the lower part of the gear rod 51 is rotationally connected with the front part of the connecting rod 6 through a fourth shaft 104, and the rear part of the connecting rod 6 is rotationally connected with the cross rod 22 around the axis line of the cross rod 22 of the rear bracket 2; the front part of the seat frame 4 is rotatably connected to the stopper bar 51 of the handle frame 5 through a third shaft 103, and the rear part of the seat frame 4 is rotatably connected to the push rod 31 through a fifth shaft 105. The second shaft 102 is located between the third shaft 103 and the fourth shaft 104 in the longitudinal direction of the lever 51.

In this embodiment, the seat frame 4 includes a seat plate 41 extending in the front-rear direction, and two seat plate connecting rods 42 fixed to the rear portion of the seat plate 41 and extending obliquely upward and rearward, the two seat plate connecting rods 42 being respectively disposed on the left and right sides of the push rod 31 and rotatably connected to the push rod 31 through a fifth shaft 105. In the unfolded state of the stroller frame, the seat plate connecting rod 42 and the push rod 31 are parallel to each other. Thus, in the unfolded state of the stroller frame, the rear portion of the seat plate 41 can be brought into contact with the push rod 31 as much as possible, and the length of the seat is increased without increasing the height of the seat.

In the folding stroller of this embodiment, the locking mechanism is a locking joint (not shown) disposed at a position where the front frame 1, the rear frame 2, and the push rod frame 3 are rotatably connected to each other and locks the three.

When the stroller frame is in the unfolded state, as shown in fig. 1 and 2, the front frame 1, the rear frame 2 and the push rod frame 3 are unfolded relatively, the seat frame 4 extends in the horizontal direction to provide sitting and standing, the armrest 52 of the armrest frame 5 is positioned at the front side of the seat frame 4, and the front frame 1 and the push rod frame 3 extend in the same direction. The structure of the cart frame in the unfolded state is very simple and elegant, and the cart frame has good stability and bearing capacity.

When the stroller frame needs to be folded, referring to fig. 3 to 5, the push rod frame 3 is turned counterclockwise, that is, the push rod frame 3 is turned forward around the first shaft 101 to drive the seat frame 4 to move forward and rotate, so that the armrest frame 5 rotates around the second shaft 102 relative to the front bracket 1, and the connecting rod 6 drives the rear bracket 2 to rotate and fold relative to the front bracket 1. The front wheel assembly 10 is maintained to be supported on the ground during the folding process, and the front frame 1 is gradually rotated to be gradually erected, the rear frame 2 is gradually rotated toward the front frame 1 and the rear wheel assembly 20 is gradually separated from the ground. Finally, as shown in fig. 6, the front frame 1, the rear frame 2 and the push rod frame 3 are folded, the push rod frame 3 and the seat frame 4 are folded at the front side of the front frame 1, the two sets of rear wheel assemblies 20 are folded at the left and right sides of the front wheel assembly 10, and the front wheel assembly 10 and the push rod 32 of the push rod frame 3 are supported on the ground together so that the stroller frame can stand on the ground. The folded cart frame has very flat and compact structure and small occupied space.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a folding shallow, includes the shallow frame that has expansion state and fold condition, locates at the bottom of the shallow frame anterior front wheel subassembly, locate the rear wheel subassembly at the bottom of the shallow frame rear portion, and be used for with the locking mechanical system of shallow frame locking under expansion state, its characterized in that: the trolley frame comprises a front support, a rear support, a push rod frame, a seat frame, a handrail frame and a connecting rod, wherein the upper part of the front support is rotatably connected with the lower part of the push rod frame, the upper part of the rear support is rotatably connected with the front support, or the upper part of the front support, the lower part of the push rod frame and the upper part of the rear support are rotatably connected together around the same rotation center line, the handrail frame is rotatably connected with the front support, the front part of the seat frame is rotatably connected with the upper part of the handrail frame, and the rear part of the seat frame is rotatably connected with the push rod frame; the connecting rod is located the below of seat frame, one end of connecting rod with the lower part of handrail frame is connected with rotating, and its another tip is connected with rotating on the after-poppet, works as when shallow frame is in fold condition, fore-stock, after-poppet and push rod frame draw in each other, just the push rod frame with the seat frame all draws in the front side of fore-stock.

2. The folding cart of claim 1, wherein: the front support, the rear support, the armrest frame and the connecting rods form a first four-bar mechanism, and the front support, the push rod assembly, the armrest frame and the seat frame form a second four-bar mechanism.

3. The folding cart of claim 1, wherein: the rear bracket is provided with two groups of rear supporting rods which are respectively arranged at the left side and the right side and are obliquely extended along the vertical direction, the rear supporting rods are gradually and inwardly extended from bottom to top in the left side and the right side, and the upper parts of the rear supporting rods are rotatably connected with the upper part of the front bracket and the lower part of the push rod frame around the same rotating shaft.

4. The folding cart of claim 3, wherein: the rear support further comprises a cross rod fixedly connected between the two groups of rear supporting rods, and the rear portion of the connecting rod is rotatably connected to the cross rod around the axis of the cross rod.

5. The folding cart of claim 3, wherein: the front support is provided with a front support rod which gradually inclines and extends upwards from front to back, the push rod support is provided with a push rod which gradually inclines and extends upwards from front to back, and the upper end part of the front support rod, the lower end part of the push rod and the upper end parts of the two back support rods are connected together in a rotating mode around a first shaft.

6. The folding cart of claim 1, wherein: the seat frame comprises a seat plate extending along the front-back direction, and a seat plate connecting rod fixed at the rear part of the seat plate and extending upwards and backwards, the seat frame is connected with the push rod frame in a rotating mode through the seat plate connecting rod, and the seat plate connecting rod is parallel to the length extending direction of the push rod frame in the unfolded state of the cart frame.

7. The folding cart of claim 1, wherein: the handrail frame is connected through the second axle with rotating on the fore-stock, the upper portion of handrail frame pass through the third axle with the front portion of seat frame is connected with rotating, the lower part of handrail frame pass through the fourth axle with the connecting rod is connected with rotating, the second axle is located the third axle with between the fourth axle.

8. The folding cart of claim 1, wherein: the armrest rod is provided with a blocking rod extending along the vertical direction and an armrest fixedly arranged at the upper end part of the blocking rod and extending along the left-right direction, and the armrest is higher than the seat frame in the height direction.

9. The folding cart of claim 8, wherein: the front support is provided with a front support rod which gradually inclines upwards from front to back, and the two stop rods are respectively connected to the left side and the right side of the front support rod.

10. The folding cart of claim 1, wherein: the push rod frame comprises a push rod and a push handle rod which is fixed at the top of the push rod and extends along the left-right direction, when the cart frame is in a folded state, the front wheel assembly and the rear wheel assembly are mutually folded, and the front wheel assembly and the push handle rod are supported on the ground so that the cart frame can stand on the ground.