CN111483504A

CN111483504A - Children's barrow

Info

Publication number: CN111483504A
Application number: CN202010303230.0A
Authority: CN
Inventors: 战华锋; 李丰
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-08-04

Abstract

The invention discloses a child stroller, wherein a stroller frame of the stroller comprises a bottom frame, a front support, a connecting frame and a push rod assembly, wherein the bottom frame comprises a front support and a rear support which can relatively slide and stretch in the front-rear direction, and a rear wheel assembly is arranged at the rear part of the rear support; the connecting frame is rotationally connected with the front part of the front frame, and the front wheel assembly is arranged at the bottom of the connecting frame; the lower part of the front bracket is rotationally connected with the connecting frame; the push rod assembly is rotatably connected with the upper part of the front bracket; this shallow frame is still including connecting the fore-stock the push rod subassembly reaches link assembly between the chassis works as when the shallow frame is in fold condition, the push rod subassembly with the fore-stock draws in the chassis top, the front wheel subassembly overturn backward and with the chassis draws in each other, the chassis shortens along the fore-and-aft direction, reduces the size after the shallow frame is folded by a wide margin.

Description

Children's barrow

Technical Field

The invention relates to a baby stroller.

Background

The stroller in the prior art comprises a stroller frame with an unfolding state and a folding state, a front wheel assembly and a rear wheel assembly which are arranged at the bottom of the stroller frame, a seat arranged on the stroller frame, and a locking mechanism used for locking the stroller frame in the unfolding state, wherein some of the stroller frames comprise an underframe, the front wheel assembly and the rear wheel assembly are respectively arranged at the bottoms of the front end and the rear end of the underframe, and other rod pieces on the stroller frame are all folded above the underframe when the stroller frame is folded. At present, the frame of the stroller has various structures, the folding principle and the folded size are different, and how to obtain the stroller with the folded size as small as possible and the folding operation is convenient is a goal continuously pursued by the people in the field.

Disclosure of Invention

The invention aims to provide a baby stroller with a novel structure.

In order to achieve the purpose, the invention adopts the technical scheme that: a stroller comprising a stroller frame having an expanded state and a collapsed state, a front wheel assembly, a rear wheel assembly, and a locking mechanism for locking the stroller frame in the expanded state, the stroller frame comprising:

the chassis extends along the front-back direction, the chassis comprises a front frame and a rear frame which can relatively slide and stretch along the front-back direction, and the rear wheel assembly is arranged at the rear part of the rear frame;

the connecting frame is rotatably connected with the front part of the front frame, and the front wheel assembly is arranged at the bottom of the connecting frame;

the lower part of the front bracket is rotationally connected with the connecting frame;

the push rod assembly is rotatably connected with the upper part of the front bracket;

a connecting rod assembly connected among the front bracket, the push rod assembly and the bottom frame,

when the cart frame is in a folded state, the push rod assembly and the front support are folded above the bottom frame, the connecting frame is opposite to the front support and the front support rotates, so that the front wheel assembly turns backwards and is mutually folded with the bottom frame, and the bottom frame is shortened along the front-back direction.

Preferably, the link assembly includes a first link, a second link and a third link, the first link is rotatably connected to the second link through a first shaft, one end of the first link is rotatably connected to a lower portion of the push rod assembly, the second link is rotatably connected between the front bracket and the front frame, and the third link is rotatably connected between the other end of the first link and the rear frame.

Furthermore, a four-bar linkage mechanism is formed among the front bracket, the push rod assembly, the first connecting rod and the second connecting rod; another four-bar linkage mechanism is formed among the front bracket, the connecting frame, the front bracket and the second connecting bar.

Further, the rear end of the second connecting rod is rotatably connected with the front frame around the first shaft, the lower portion of the front support is rotatably connected with the connecting frame through a second shaft, the front portion of the front frame is rotatably connected with the connecting frame through a third shaft, and the second shaft is located above the third shaft in the height direction in the unfolded state of the stroller frame.

Further, the cart frame further comprises a seat frame extending in the front-back direction, the front portion of the seat frame is rotatably connected to the front support, a sliding piece is rotatably arranged on the first connecting rod, and the sliding piece is slidably arranged on the seat frame in the front-back direction.

Further, preceding frame has two preceding sill bars of branch locating the left and right sides, the after-poppet has two back sill bars of branch locating the left and right sides, on each side of the left and right sides, preceding sill bar with back sill bar relatively slidingly connects, preceding frame has two preceding branches of branch locating the left and right sides, push rod assembly has two push rods of branch locating the left and right sides, correspondingly, link assembly has two sets of branch locating the left and right sides.

Furthermore, first connecting rod includes the montant section that extends along upper and lower direction, and certainly the lower extreme of montant section is buckled the crossbar section that extends backward, the front portion of third connecting rod with the rear end of crossbar section rotates to be connected, the rear end of third connecting rod is connected with rotating on the back sill bar, works as when the shallow frame is in the expansion state, the crossbar section with the third connecting rod extends and draws in along same length direction in the inboard of back sill bar.

In a preferred embodiment, the connecting frame includes a cross frame extending in the left-right direction, the left end and the right end of the cross frame are respectively formed with lugs extending obliquely upward and outward, and the lower part of the front strut is rotatably connected to the lugs on the same side.

As a preferred embodiment, the rear bottom bar is slidably sleeved on the front bottom bar, and when the stroller frame is in the folded state, the rear end of the front bottom bar extends out of the rear end of the rear bottom bar.

In a preferred embodiment, the left end and the right end of the connecting frame are respectively provided with a wheel seat joint, the front wheel assembly is mounted on the wheel seat joints, and the two sets of front wheel assemblies are positioned on the left side and the right side of the underframe in the left-right direction.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the child stroller disclosed by the invention, the connecting rod assembly is arranged among the push rod assembly, the front support and the underframe, when the stroller frame is folded, in the process that the push rod assembly and the front support rotate and are folded relative to the underframe, the connecting rod assembly drives the connecting frame to rotate, so that the front wheel assembly turns backwards and is mutually folded with the underframe, and meanwhile, the length of the underframe is shortened along the front-back direction, so that the rear wheel assembly is folded forwards towards the front wheel assembly, and the size of the folded stroller frame is greatly reduced.

Drawings

FIG. 1 is a perspective view of a stroller frame according to the present invention in an unfolded state;

FIG. 2 is a side view of the cart frame of the present invention in an expanded condition;

FIG. 3 is a perspective view of the cart frame push rod assembly of the present invention after folding;

FIG. 4 is a side view of the cart frame push rod assembly of the present invention after folding;

FIG. 5 is a perspective view of the cart frame of the present invention during folding;

FIG. 6 is a side view of the cart frame of the present invention during folding;

FIG. 7 is a perspective view of the stroller frame of the present invention in a folded condition;

FIG. 8 is a side view of the cart frame of the present invention in a folded configuration;

wherein:

1. a chassis; 11. a front bottom bar; 12. a rear sill bar; 13. a rear cross bar;

2. a connecting frame; 21. a cross frame; 22. a lug; 23. a wheel seat joint;

3. a front bracket; 31. a front support rod;

4. a push rod assembly; 41. a push rod; 42. a handle pushing rod; 43. a handle bar is pushed;

5. a first link; 5a, a vertical rod section; 5b, a cross rod section;

6. a second link; 7. a third link;

8. a seat frame; 81. a seat post; 82. a seat post cross bar;

9. a slider (sliding sleeve); 10. a front wheel assembly; 20. a rear wheel assembly; 30. an unlocking operation member;

101. a first shaft; 102. a second shaft; 103. a third axis; 104. a fourth axis; 105. a fifth shaft; 106. a sixth axis; 107. a seventh axis; 108. and an eighth axis.

Detailed Description

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

Referring to fig. 1 to 8, a stroller is shown comprising a stroller frame having an unfolded state and a folded state, a front wheel assembly 10, a rear wheel assembly 20, and a locking mechanism for locking the stroller frame in the unfolded state.

This shallow frame includes chassis 1, link 2, fore-stock 3, push rod subassembly 4, wherein: the chassis 1 extends along the front-back direction, the chassis 1 comprises a front frame and a rear frame which can relatively slide and stretch along the front-back direction, and the rear wheel assembly 20 is arranged at the rear part of the rear frame; the connecting frame 2 is rotationally connected with the front part of the front frame, and the front wheel assembly 10 is arranged at the bottom of the connecting frame 2; the front bracket 3 extends upwards and slantingly from front to back, and the lower part of the front bracket is rotatably connected to the connecting frame 2; the push rod assembly 4 extends from the front to the rear with gradually inclining upward, and the lower portion thereof is rotatably connected with the upper portion of the front supporter 3. The cart frame further comprises a connecting rod assembly, the connecting rod assembly is connected among the front support 3, the push rod assembly 4 and the bottom frame 1, when the push rod assembly 4 and the front support 3 rotate relative to the bottom frame 1 to be folded, the connecting rod assembly drives the connecting frame 2 to rotate so that the front wheel assembly 10 turns backwards and is mutually folded with the bottom frame 1, and meanwhile, the length of the bottom frame 1 is shortened along the front-back direction so that the rear wheel assembly 20 is forwards folded towards the front wheel assembly 10, and therefore the size of the cart frame after being folded is greatly reduced.

Specifically, referring to the drawings, in the chassis 1, the front frame includes two front bottom rods 11 respectively disposed on the left and right sides and extending in the front-rear direction, the rear frame includes two rear bottom rods 12 respectively disposed on the left and right sides and extending in the front-rear direction, a rear cross rod 13 is fixedly connected between the two rear bottom rods 12, and on each of the left and right sides, the front bottom rods 11 are slidably connected with the rear bottom rods 12, and herein, the rear bottom rods 12 are slidably sleeved on the front bottom rods 11. The front ends of the both side front bottom bars 11 are rotatably connected to the link frame 2 through a third shaft 103.

The front bracket 3 has two front stays 31 provided on both left and right sides, and lower ends of the two front stays 31 are rotatably connected to the connecting frame 2 via second shafts 102, respectively, and the second shafts 102 are located above third shafts 103 in the height direction. In this embodiment, the link frame 2 includes a cross frame 21 extending in the left-right direction, the left end portion and the right end portion of the cross frame 21 are respectively formed with lugs 22 extending obliquely upward and outward, and the lower portion of the front link 31 is rotatably connected to the lugs 22 on the same side thereof. The portion of the cross-piece 21 located between the two lugs 22 is also formed as a footboard for a child to place his feet. The two sets of front wheel assemblies 10 are respectively arranged at the outermost ends of the left and right side end parts of the cross frame 21, here, the left end and the right end of the connecting frame 2 are respectively provided with a wheel seat joint 23, the front wheel assemblies 10 are installed on the wheel seat joints 23, and the two sets of front wheel assemblies 10 are positioned at the left and right sides of the underframe 1 in the left and right directions.

The push rod assembly 4 comprises two groups of push rods 41 respectively arranged at the left side and the right side, a push handle rod 42 in sliding telescopic connection with the push rods 41, and a push handle cross rod 43 fixedly connected between the upper ends of the push handle rods 42 at the two sides, wherein the lower parts of the push rods 41 at the left side and the right side are rotatably connected with the upper end part of the front support rod 31 at the same side through a fifth shaft 105.

The connecting rod assemblies are provided with two groups which are respectively arranged at the left side and the right side, and each group of connecting rod assemblies comprises a first connecting rod 5, a second connecting rod 6 and a third connecting rod 7. On each of the left and right sides of the stroller frame, the first link 5 is rotatably connected to the second link 6 via a first shaft 101, one end portion of the first link 5 is rotatably connected to the lower end portion of the push rod 41 via a sixth shaft 106, and the sixth shaft 106 is located below a fifth shaft 105 on the push rod 41; the other end of the first link 5 is pivotally connected to one end of the third link 7 via a seventh shaft 107, and the other end of the third link 7 is pivotally connected to the rear floor bar 12 via an eighth shaft 108. The second link 6 has one end pivotally connected to the front support rod 31 via the fourth shaft 104 and the other end pivotally connected to the front bottom bar 11. in this embodiment, the second link 6 is pivotally connected to the front bottom bar 11 about the first shaft 101, that is, the second link 6, the first link 5 and the front bottom bar 11 are pivotally connected together about the first shaft 101.

Thus, on each of the left and right sides of the stroller frame, the front stay 31, the push rod 41, the first link 5, and the second link 6 constitute a four-link mechanism between the fifth shaft 105, the sixth shaft 106, the fourth shaft 104, and the first shaft 101; the front support rod 31, the connecting frame 2, the front bottom rod 11 and the second connecting rod 6 form another four-bar linkage mechanism among the second shaft 102, the third shaft 103, the first shaft 101 and the fourth shaft 104; the front bottom bar 11, the rear bottom bar 12, the third link 7, and the first link 5 constitute a single crank mechanism among the first shaft 101, the seventh shaft 107, and the eighth shaft 108.

In the present embodiment, the first link 5 of the link assembly is configured as follows: the first connecting rod 5 comprises a vertical rod section 5a extending in the vertical direction and a transverse rod section 5b extending from the lower end of the vertical rod section 5a in a backward bending mode, the front portion of the third connecting rod 7 is rotatably connected with the rear end of the transverse rod section 5b, and the rear end of the third connecting rod 7 is rotatably connected to the rear bottom rod 12. Thus, when the stroller frame is in the unfolded state, as shown in fig. 1 to 2, the cross bar section 5b and the third link 7 can extend in the same length direction and gather inside the rear floor bar 12, so that the structure of the stroller frame in the unfolded state is very simple.

The stroller frame further includes a seat frame 8 extending in the front-rear direction, and the seat frame 8 is disposed between the front link 31 and the link assembly on both sides in the left-right direction. Specifically, the seat frame 8 has two seat bars 81 respectively disposed on the left and right sides and extending in the front-rear direction, and a plurality of seat bar cross bars 82 fixedly disposed between the two seat bars 81, on each of the left and right sides of the stroller frame, the front portion of the seat bar 81 is rotatably connected to the front support bar 31, and the first link 5 is rotatably provided with a sliding member 9, where the sliding member 9 is a sliding sleeve, which is slidably fitted over the seat bar 81 in the length extending direction of the seat bar 81.

Thus, when the stroller frame is in the unfolded state, as shown in fig. 1 and 2, on each of the left and right sides of the stroller frame, the front bottom bar 11 and the rear bottom bar 12 are extended relatively, the push handle bar 42 of the push rod assembly 4 is unfolded relatively to the push rod 41, the front bar 31 and the push rod 41 extend along the same length direction, the front bar 31, the push rod 41, the first link 5 and the front bottom bar 11 form a triangular structure therebetween, the third link 7 and the cross bar section 5b of the first link 5 extend along the same length direction and are substantially parallel to the extending direction of the front bottom bar 11 and the rear bottom bar 12, and the third link 7 and the cross bar section 5b are shielded by the front bottom bar 11 and the rear bottom bar 12 when viewed from the outside of the stroller frame. The frame structure of the cart in the unfolded state is very simple, and the cart has good stability and bearing capacity. The locking mechanism of the cart frame can be arranged at the rotary connection position of the front support rod 31 and the push rod 41, and the push handle cross rod 43 is also provided with an unlocking operation piece 30.

When the stroller frame needs to be folded, after the locking mechanism is unlocked, the push handle rod 42 of the push rod assembly 4 is retracted relative to the push rod 41 to shorten the length of the push rod assembly 4, as shown in fig. 3 and 4, and then the push rod assembly 4 is turned over in the direction of arrow a in fig. 4, as shown in fig. 5 and 6, the upper portion of the front bracket 3 moves backwards and downwards to drive the connecting bracket 2 to rotate around the third shaft 103 relative to the underframe 1, so that the front wheel assembly 10 is turned backwards and folded in the direction of arrow B in fig. 4 and is folded with the underframe 1; at the same time, the first link 5 rotates around the first shaft 101, and the rear end of the cross rod section 5b moves forward, which drives the third link 7 to move forward to drive the rear bottom rod 12 to slide forward relative to the front bottom rod 11, as shown by arrow C in fig. 4, so that the length of the chassis 1 is shortened, and the rear wheel assembly 20 moves forward to reduce the distance between the rear wheel assembly and the front wheel assembly 10.

As shown in fig. 7 and 8, the push rod assembly 4 and the front bracket 3 are folded above the bottom frame 1, the seat frame 8 is also folded between the first connecting rod 5 and the front bracket 3, the rear end of the front bottom rod 11 extends to the rear of the rear end of the rear bottom rod 12, the front wheel assembly 10 and the rear wheel assembly 20 are folded in the front-rear direction and are folded on the left side and the right side of the bottom frame 1, the distance between the front wheel assembly 10 and the rear wheel assembly 20 is greatly reduced compared with that of the folded cart frame, and the front wheel assembly 10 and the bottom frame 1 are partially overlapped in height, so that the overall height of the folded cart frame is significantly reduced. The folded cart frame has compact structure and small volume.

When the frame of the cart needs to be opened, the upper part of the push rod assembly 4 only needs to be pulled upwards to complete the unfolding operation, and the operation is very convenient.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to 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 within the protection scope of the present invention.

Claims

1. The utility model provides a children's shallow, is including having shallow frame, front wheel subassembly, the rear wheel subassembly of expansion state and fold condition, and be used for with the locking mechanical system of shallow frame locking under the expansion state, its characterized in that, the shallow frame includes:

2. The stroller of claim 1, wherein: the connecting rod assembly comprises a first connecting rod, a second connecting rod and a third connecting rod, the first connecting rod is connected with the second connecting rod in a rotating mode through a first shaft, one end portion of the first connecting rod is connected with the lower portion of the push rod assembly in a rotating mode, the second connecting rod is connected between the front support and the front support in a rotating mode, and the third connecting rod is connected between the other end portion of the first connecting rod and the rear support in a rotating mode.

3. The stroller of claim 2, wherein: a four-bar linkage is formed among the front bracket, the push rod assembly, the first connecting rod and the second connecting rod; another four-bar linkage mechanism is formed among the front bracket, the connecting frame, the front bracket and the second connecting bar.

4. The stroller of claim 2, wherein: the rear end of the second connecting rod winds the first shaft and is rotationally connected with the front frame, the lower portion of the front support is rotationally connected with the connecting frame through the second shaft, the front portion of the front frame is rotationally connected with the connecting frame through the third shaft, and the second shaft is located above the third shaft in the height direction in the unfolded state of the cart frame.

5. The stroller of claim 2, wherein: the stroller frame further comprises a seat frame extending in the front-back direction, the front portion of the seat frame is rotatably connected to the front support, a sliding piece is rotatably arranged on the first connecting rod, and the sliding piece is slidably arranged on the seat frame in the front-back direction.

6. Child stroller according to any of claims 2 to 5, characterized in that: the utility model discloses a push rod assembly, including the left and right sides, preceding frame, back frame, push rod assembly, preceding frame, back frame, preceding sill bar, back sill bar, preceding frame has two preceding sill bars of branch locating the left and right sides, the back frame has two back sill bars of branch locating the left and right sides, on each side about, preceding sill bar with back sill bar relatively slidingly connects, preceding frame has two preceding branch poles of branch locating the left and right sides, push rod assembly has two push rods of branch locating the left and right sides, correspondingly, link assembly has two sets of branch locating the left and right.

7. The stroller of claim 6, wherein: the utility model discloses a shallow car frame, including first connecting rod, last bottom bar, the last bottom bar is connected with the last bottom bar of last bottom bar.

8. The stroller of claim 6, wherein: the connecting frame comprises a transverse frame extending along the left-right direction, the left end part and the right end part of the transverse frame are respectively provided with a lug extending upwards and outwards in an inclined mode, and the lower part of the front supporting rod is rotatably connected to the lug on the same side.

9. The stroller of claim 6, wherein: the back sill bar is established with sliding ground on the preceding sill bar, works as when the shallow frame is in fold condition, the rear end of preceding sill bar stretches out the rear of back sill bar rear end.

10. The stroller of claim 6, wherein: the left end and the right end of the connecting frame are respectively provided with a wheel seat joint, the front wheel assemblies are arranged on the wheel seat joints, and the two groups of front wheel assemblies are positioned on the left side and the right side of the underframe in the left-right direction.