WO2019137151A1

WO2019137151A1 - Foldable stroller

Info

Publication number: WO2019137151A1
Application number: PCT/CN2018/121056
Authority: WO
Inventors: 丁峰
Original assignee: 江苏小小恐龙儿童用品集团有限公司
Priority date: 2018-01-15
Filing date: 2018-12-14
Publication date: 2019-07-18
Also published as: CN207790810U

Abstract

A foldable baby stroller, comprising: a push rod; a front bracket, a rear bracket, a side connecting rod, a first connection assembly, a sliding connecting rod, and a sliding sleeve; both an upper end of the front bracket and an upper end of the side connecting rod are pin-connected to a lower end of the push rod, both a lower end of the front bracket and a lower end of the side connecting rod are pin-connected to the rear bracket, the sliding sleeve is provided on the rear bracket and can slide along the rear bracket, a first end of the slide connecting rod is pin-connected to the front bracket, and a second end of the slide connecting rod is pin-connected to the sliding sleeve

Description

Folding cart

The present application claims the priority of the Chinese Patent Application No. 201820061057.6, filed on Jan. 15, 20, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present disclosure relates to the field of baby carriage technology, for example to a foldable cart.

Background technique

The cart of the related art includes two side brackets and horizontal sliding links arranged to connect the two side brackets, each side bracket including a pusher lever, a front sliding link, a lower sliding link, a rear sliding link, and is disposed on The rear wheel of the rear portion of the lower sliding link and the front wheel of the front portion of the lower sliding link or the front portion of the front sliding link can be folded in the up and down direction for convenient packaging and transportation. After the folding of such a cart, although it can be reduced in size when unfolded, it still has the disadvantage that the volume is not small enough, and the shape after folding is not smooth and flat; at the same time, such a cart cannot be laterally folded, and the whole vehicle is folded before and after folding. The horizontal dimension does not change, and still occupies a large space, which causes the cart to occupy a lot of space after being placed in the trunk of the car, which is inconvenient to carry.

Summary of the invention

The present disclosure proposes a foldable cart that is reduced in both lateral and longitudinal dimensions after folding.

An embodiment provides a foldable cart comprising: a push rod comprising a first push rod and a second push rod disposed symmetrically; a front bracket comprising a first front bracket and a second front bracket symmetrically disposed; a rear bracket a first rear bracket and a second rear bracket that are symmetrically disposed; a side link including a first side link and a second side link that are symmetrically disposed; an upper end of the first front bracket and the first side joint The upper end of the rod is pinned to the lower end of the first push rod, and the upper end of the second front bracket and the upper end of the second side link are both pinned to the lower end of the second push rod, the first The lower end of the second front bracket and the lower end of the second side link are both pinned to the second rear bracket; the first connecting component is rotatably connected between the first rear bracket and the second rear bracket; a sliding link comprising: a first sliding link and a second sliding link arranged symmetrically; and a sliding sleeve comprising a first sliding sleeve and a second sliding sleeve symmetrically disposed, the first sliding sleeve being disposed at the first a rear bracket and slidable along the first rear bracket, the first end of the first sliding link The first front bracket is pinned, the second end of the first sliding link is pinned to the first sliding sleeve; the second sliding sleeve is disposed on the second rear bracket and can be along the second The rear bracket slides, the first end of the second sliding link is pinned to the second front bracket, and the second end of the second sliding link is pinned to the second sliding sleeve.

DRAWINGS

1 is a schematic structural view of a fully expandable foldable cart provided in Embodiment 1;

2 is a schematic structural view showing a half-folded state of a foldable cart according to Embodiment 1;

3 is a schematic structural view of the foldable cart provided in the first embodiment after being completely folded;

4 is a schematic structural view of the foldable cart provided in the second embodiment in a fully deployed state.

In the picture: 11-rear bracket, 111-first rear bracket, 112-second rear bracket, 12-front wheel mount, 121-first front wheel mount, 122-second front wheel mount, 13-sleeve, 131 - first sliding sleeve, 132 - second sliding sleeve, 14 - front bracket, 141 - first front bracket, 142 - second front bracket, 15-link bracket, 151 - first link mount, 152- Second link fixing seat, 16-sliding link, 161-first sliding link, 162-second sliding link, 17-support block, 171-first support block, 172-second support block, 21- Bottom strut, 31-side link, 311-first side link, 312-second side link, 32-push rod, 321-first push rod, 322-second push rod, 33-grip, 34-folded joint, 341-first folded joint, 342-second folded joint, 35-shaft part, 41-front strut, 42-seat pole, 421-first seatpost, 422-second seatpost, 51 -wheel.

Detailed ways

Embodiment 1

As shown in FIG. 1 , the foldable cart of this embodiment is a baby stroller, and the cart includes: a push rod 32 , a front bracket 14 , a rear bracket 11 and a side link 31 , a push rod 32 , a front bracket 14 , and a rear Both the bracket 11 and the side links 31 are symmetrically disposed to each other. The upper end of the front bracket 14 and the upper end of the side link 31 are both pinned to the lower end of the push rod 32. The lower end of the front bracket 14 and the lower end of the side link 31 are pinned to the rear bracket 11, and the two rear brackets 11 are The first connecting component is rotatably connected, and the trolley further comprises: a sliding link 16 and a sliding sleeve 13 symmetrically disposed on the left and right sides, the sliding sleeve 13 is disposed on the rear bracket 11 and is slidable along the rear bracket 11, and the sliding link 16 is The first end is pinned to the front bracket 14, and the second end of the sliding link 16 is pinned to the sliding sleeve 13.

In an embodiment, the lower end of the push rod 32 is provided with a folded joint 34 respectively coupled to the upper end of the front bracket 14 and the upper end of the side link 31; the front bracket 14 is provided with a first end pin of the sliding link 16 The connecting rod fixing seat 15 is provided; the rear bracket 11 is provided with a front wheel base 12 pinned to the lower end of the front bracket 14.

In this embodiment, the pin joints of the side link 31 and the rear bracket 11 are disposed between the front wheel base 12 and the sliding sleeve 13 in order to ensure a smooth and smooth shape after the body frame is folded.

In an embodiment, the first connecting component comprises two cross-pivoted bottom struts 21, and the four ends of the two bottom struts 21 are respectively corresponding to the two front wheel seats 12 and the two sliding sleeves 13 respectively. And rotate the connection. Thus, when the plurality of pin joints rotate, the two bottom stays 21 are rotated by the sliding link 16 and the sliding sleeve 13, and the cross rotation of the two bottom stays 21 realizes the folding or unfolding of the cart.

The cart in this embodiment further includes a second connecting unit, the second connecting unit is arranged to enhance the solidity of the cart, and the second connecting unit comprises two cross-pivoted front struts 41 and two front struts 41. Two of the four end portions are respectively in one-to-one correspondence with the two front wheel bases 12, and are rotatably connected, and the other two end portions are rotatably connected with the seat post 42.

The seat bar 42 serves as a support for the stable support of the seat bar 42. In this embodiment, the support block 17 supporting the support seat bar 42 is provided on both front brackets 14 and is in the process of folding the body frame. The seat post 42 is movable relative to the support block 17.

A grip 33 is connected between the upper ends of the two push rods 32 in the present embodiment, and the grip 33 is provided with a plurality of shaft portions 35 capable of folding the grip 33 in the middle. Thus, by applying a downward force to the middle of the grip 33, the grip 33 can be folded in the middle.

Further, the wheel 51 of the cart is mounted at both ends of each of the rear brackets 11, and the wheels 51 include front and rear wheels.

As shown in FIG. 2 and FIG. 3, the folding process of the cart of the present embodiment first rotates the push rod 32 and the side link 31 around the folding joint 34. At this time, the front bracket 14 is forced to pass the sliding link 16 to make the sliding sleeve. 13 slides on the rear bracket 11, the sliding sleeve 13 drives the two bottom stays 21 to rotate, so that the brackets at the two ends of the bottom stay 31 are brought closer together, so that the two front stays 41 are rotated, and the grip 33 is folded in the middle. The plurality of rods continue to move toward the middle, and finally the push rod 32 is folded over to the side link 31 to be folded into the state shown in FIG. It can be seen that the folding manner of the cart in the embodiment can effectively reduce the width, the length and the volume, and the shape after the folding is smooth and flat, and the occupied space is small.

Embodiment 2

The embodiment provides a foldable cart, the cart is a stroller, as shown in FIG. 4, the cart includes: a push rod, comprising a first push rod 321 and a second push rod 322 arranged symmetrically; The front bracket includes a first front bracket 141 and a second front bracket 142 that are symmetrically disposed; the rear bracket includes a first rear bracket 111 and a second rear bracket 112 that are symmetrically disposed; the side links include a first side that is symmetrically disposed a rod 311 and a second side link 312; an upper end of the first front bracket 141 and an upper end of the first side link 311 are both pinned to a lower end of the first push rod 321, and the second front bracket The upper end of the 142 and the upper end of the second side link 312 are both pinned to the lower end of the second push rod 322, and the lower end of the second front bracket 142 and the lower end of the second side link 312 are both The second rear bracket 112 is pinned; the first connecting component is rotatably connected between the first rear bracket 111 and the second rear bracket 112; the sliding link 16 includes a symmetrically disposed first sliding link 161 and the second sliding link 162; and the sliding sleeve 13, comprising a first sliding sleeve 131 and a second sliding sleeve 132 symmetrically disposed, a sliding sleeve 131 is disposed on the first rear bracket 111 and slidable along the first rear bracket 111, and a first end of the first sliding link 161 is pinned to the first front bracket 141, The second end of the first sliding link 161 is pinned to the first sliding sleeve 131; the second sliding sleeve 132 is disposed on the second rear bracket 112 and is slidable along the second rear bracket 112. The first end of the second sliding link 162 is pinned to the second front bracket 142, and the second end of the second sliding link 162 is pinned to the second sliding sleeve 132.

In an embodiment, the cart further includes a folded joint, the folded joint includes a first folded joint 341 and a second folded joint 342, and the first folded joint 341 is disposed at a lower end of the first push rod 321 The second folding joint 342 is disposed at a lower end of the second push rod 322 , and the upper end of the first front bracket 141 and the upper end of the first side link 311 are respectively pinned to the first folding joint 341 . The upper end of the second front bracket 142 and the upper end of the second side link 312 are both pinned to the second folding joint 342.

In an embodiment, the cart further includes a link fixing seat, and the two link fixing bases are disposed on the first link fixing seat 151 and the second link fixing seat 152, and the first link fixing seat 151 is disposed. On the first front bracket 141, and pinned to the first end of the first sliding link 161, the second link fixing seat 152 is disposed on the second front bracket 142, and The first end of the second sliding link 162 is pinned.

In an embodiment, the cart further includes a front wheel base, the front wheel base includes a first front wheel base 121 and a second front wheel base 122, and the first front wheel base 121 is disposed on the first rear bracket 111 And being pinned to the lower end of the first front bracket 141, the second front wheel base 122 is disposed on the second rear bracket 112 and is pinned to the lower end of the second front bracket 142.

The pin connection between the first side link 311 and the first rear bracket 111 is located between the first front wheel base 121 and the first sliding sleeve 131; the second side link 312 and the The pin joint of the second rear bracket 112 is located between the second front wheel housing 122 and the second sliding sleeve 132.

The first connecting component comprises two cross-pivoted bottom struts 21, and the two bottom struts 21 comprise a first bottom struts and a second bottom struts, the first end of the first bottom struts Rotatingly connected to the first front wheel base 121, the second end of the first bottom stay is connected to the second sliding sleeve 132, and the first end of the second bottom stay and the second front wheel base 122 are rotated. Connecting, the second end of the second bottom stay is rotatably connected to the first sliding sleeve 131; wherein the first front wheel housing 121 and the first sliding sleeve 131 are located at the first connecting component The first side of the first front wheel assembly 122 and the second sliding sleeve 132 are located on a second side of the first connecting component.

In an embodiment, the cart further includes a second connecting assembly and a seat post, the second connecting assembly comprising two cross-pivoted front struts 41, the two front struts 41 including a first front strut and a a second front strut comprising a first seat post 421 and a second seat post 422, the first end of the first front strut being rotatably coupled to the first front wheel mount 121, the first front a second end of the strut is rotatably coupled to the second seat post 422, a first end of the second front strut is rotatably coupled to the second front wheel mount 122, and a second second front strut is The end is rotatably coupled to the first seat post 421; wherein the first front wheel mount 121 and the first seat post 421 are located on a first side of the second connection assembly, the second front wheel mount 122 and The second seat post 422 is located on the second side of the second connection assembly.

In an embodiment, the cart further includes two support blocks, and the two support blocks include a first support block 171 disposed on the first front bracket 141 and disposed on the second front bracket 142. The second support block 172 is configured to support the first seat post 421, and the second support block 172 is configured to support the second seat post 422.

In an embodiment, the cart further includes a grip 33 coupled to an upper end of the first push rod 321 and an upper end of the second push rod 322, the grip 33 including a plurality of shaft portions 35, The shaft portion 35 is provided to fold the grip 33 in the middle.

In an embodiment, the cart further includes a front wheel disposed at a first end of the first rear bracket 111 and a first end of the second rear bracket 112, and a front wheel disposed on the first rear bracket 111. The second end and the rear wheel of the second end of the second rear bracket 112.

The folding process and the beneficial effects of the cart in this embodiment refer to the folding process and the beneficial effects of the cart in the first embodiment, and details are not described herein again.

Claims

A foldable cart comprising:

a push rod comprising a first push rod (321) and a second push rod (322) arranged symmetrically;

a front bracket comprising a first front bracket (141) and a second front bracket (142) symmetrically disposed;

a rear bracket comprising a first rear bracket (111) and a second rear bracket (112) symmetrically disposed;

a side link including a first side link (311) and a second side link (312) symmetrically disposed, wherein an upper end of the first front bracket (141) and the first side link (311) The upper end of each of the first push rods (321) is pinned, and the upper end of the second front bracket (142) and the upper end of the second side link (312) are connected to the second push rod The lower end of the second front bracket (142) and the lower end of the second side link (312) are both pinned to the second rear bracket (112);

a first connecting component rotatably coupled between the first rear bracket (111) and the second rear bracket (112);

a sliding link comprising a first sliding link (161) and a second sliding link (162) arranged symmetrically;

a sliding sleeve comprising a first sliding sleeve (131) and a second sliding sleeve (132) arranged symmetrically, the first sliding sleeve (131) being disposed on the first rear bracket (111) and capable of being along the first a rear bracket (111) slides, a first end of the first sliding link (161) is pinned to the first front bracket (141), and a second end of the first sliding link (161) is The first sliding sleeve (131) is pinned; the second sliding sleeve (132) is disposed on the second rear bracket (112) and is slidable along the second rear bracket (112), the first a first end of the second sliding link (162) is pinned to the second front bracket (142), and a second end of the second sliding link (162) is pinned to the second sliding sleeve (132) .
The foldable cart of claim 1 further comprising a folded joint, wherein said folded joint includes a first folded joint (341) and a second folded joint (342), said first folded joint being disposed on said a lower end of the first push rod (321), the second folding joint is disposed at a lower end of the second push rod (322), an upper end of the first front bracket (141) and the first side link ( The upper end of the 311) is pinned to the first folded joint (341), and the upper end of the second front bracket (142) and the upper end of the second side link (312) are both connected to the second folded joint (342) Pinned.
A foldable cart according to claim 1, further comprising a link fixing seat, the two link fixing seats comprising a first link fixing seat (151) and a second link fixing seat (152), a first link fixing seat (151) is disposed on the first front bracket (141) and is pinned to a first end of the first sliding link (161), the second link fixing seat ( 152) disposed on the second front bracket (142) and pinned to the first end of the second sliding link (162).
A foldable cart according to claim 1, further comprising a front wheel mount, the front wheel mount including a first front wheel mount (121) and a second front wheel mount (122), the first front wheel mount (121) Provided on the first rear bracket (111) and pinned to the lower end of the first front bracket (141), and the second front wheel base (122) is disposed on the second rear bracket (112) Up and pinned to the lower end of the second front bracket (142).
The foldable cart according to claim 4, wherein a pin joint of the first side link (311) and the first rear bracket (111) is located at the first front wheel base (121) Between the first sliding sleeves (131); a pin joint of the second side link (312) and the second rear bracket (112) is located at the second front wheel base (122) and Between the second sliding sleeves (132).
A foldable cart according to claim 4, wherein said first attachment assembly comprises two cross-pivoted bottom struts (21), and said bottom struts (21) comprise a first bottom struts And a second bottom strut, the first end of the first bottom strut is rotatably coupled to the first front wheel base (121), and the second end of the first bottom strut is connected to the second sliding sleeve (132) The first end portion of the second bottom stay is rotatably coupled to the second front wheel base (122), and the second end portion of the second bottom stay is rotated with the first sliding sleeve (131) connection;

The first front wheel housing (121) and the first sliding sleeve (131) are located on a first side of the first connecting component, the second front wheel housing (122) and the second sliding sleeve ( 132) is located on a second side of the first connection assembly.
A foldable cart according to claim 4, further comprising a second connecting assembly and a seat post, the second connecting assembly comprising two cross-pivoted front struts (41), two front struts (41) A first front strut and a second front strut including a first seat post (421) and a second seat post (422), the first end of the first front strut and the first end The front wheel base (121) is rotatably connected, the second end of the first front strut is rotatably coupled to the second seat post (422), and the first end of the second front strut is opposite to the second front The wheel base (122) is rotatably connected, and the second end of the second front strut is rotatably connected to the first seat post (421);

The first front wheel housing (121) and the first seat post (421) are located on a first side of the second connecting assembly, the second front wheel housing (122) and the second seat rail ( 422) is located on a second side of the second connection assembly.
The foldable cart according to claim 7, further comprising a support block including a first support block (171) disposed on the first front bracket (141) and disposed on the second front a second support block (172) on the bracket (142), the first support block (171) is configured to support the first seat post (421), and the second support block (172) is configured to support the Second seatpost (422).
A foldable cart according to claim 1, further comprising a grip (33) coupled to an upper end of said first push rod (321) and an upper end of said second push rod (322), wherein said The grip (33) includes a plurality of shaft portions (35) that are arranged to fold the grips (33) in the middle.
A foldable cart according to any one of claims 1-9, further comprising a front end disposed at a first end of the first rear bracket (111) and a first end of the second rear bracket (112) a wheel, and a rear wheel disposed at a second end of the first rear bracket (111) and a second end of the second rear bracket (112).