CN116902049A

CN116902049A - Child cart

Info

Publication number: CN116902049A
Application number: CN202310708385.6A
Authority: CN
Inventors: 王俊马; 陈健
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2023-06-15
Filing date: 2023-06-15
Publication date: 2023-10-20

Abstract

The invention relates to a child stroller, wherein a frame only comprises a front wheel bracket, a rear wheel bracket, a side rod bracket, a push rod bracket, a stay rod bracket and a connecting bracket, wherein a first sliding piece is arranged at the front part of the connecting bracket and can slide up and down along the front wheel bracket, and a second sliding piece is arranged at the lower part of the stay rod bracket and can slide back and forth along the connecting bracket. The frame has the advantages that the number of the whole rods is small, the structure is simple, and when the frame is folded, the push rod frame is only required to be driven to move backwards and downwards, so that the rods in the frame can be linked to rotate mutually to be gradually folded, the whole size of the folded frame is reduced, and convenience is brought to daily carrying and use of users.

Description

Child cart

Technical Field

The invention relates to the field of children products, in particular to a child trolley.

Background

The existing child cart has various structures, different rod pieces and different connection relations, correspondingly different folding principles, different folded forms and different folded sizes, and the aim of continuously pursuing by the technicians in the field is to ensure good stability and normal use performance of the cart, so that the structure of the cart frame is as simple as possible, the folding operation is more convenient, and the folded volume is as small as possible.

Disclosure of Invention

The invention aims to provide a novel child stroller.

In order to achieve the above purpose, the invention adopts the following technical scheme: a child stroller comprising a frame having an expanded configuration and a collapsed configuration, a front wheel assembly and a rear wheel assembly disposed at a bottom of the frame, the frame comprising:

the front wheel bracket extends obliquely backwards from bottom to top, and the front wheel assembly is arranged at the bottom of the front wheel bracket;

the rear wheel bracket extends forwards in a tilting way from bottom to top, and the rear wheel assembly is arranged at the bottom of the rear wheel bracket;

the side rod frame extends along the up-down direction, the lower part of the side rod frame is rotationally connected with the upper part of the front wheel bracket, and the upper part of the rear wheel bracket is rotationally connected with the side rod frame;

the connecting frame extends along the front-rear direction, the rear part of the connecting frame is rotationally connected to the rear wheel bracket, the front part of the connecting frame is rotationally connected with a first sliding piece, and the first sliding piece can be slidingly arranged on the front wheel bracket along the length extending direction of the front wheel bracket;

the push rod frame extends along the up-down direction, and the upper part of the side rod frame is rotationally connected to the push rod frame;

the brace rod frame, the brace rod frame extends along upper and lower direction, the brace rod frame with rear wheel support intercrossing just is rotationally connected in the junction, the upper portion of brace rod frame with the lower part of push rod frame is rotationally connected, the lower part of brace rod frame is rotationally connected with the second slider, the second slider can be followed the length extending direction of link is located slidingly on the link.

Preferably, in the process of converting the vehicle frame from the unfolded state to the folded state, the first sliding part slides upwards along the front wheel bracket, and the second sliding part slides forwards along the connecting frame, so that the front wheel bracket, the connecting frame, the rear wheel bracket, the strut frame, the side rod frame and the push rod frame are mutually folded together along the front-rear direction.

Preferably, the frame is in a folded state, the side rod frames and the push rod frames are folded at the rear of the rear wheel frame, the front wheel frame, the connecting frame and the rear wheel frame are folded in sequence along the front-rear direction, and the supporting rod frames are folded between the connecting frame, the rear wheel frame and the side rod frames.

In some embodiments, the frame is in a collapsed condition, the front wheel assembly and/or the rear wheel assembly are commonly supported with a lower portion of the putter frame on the ground such that the frame is free-standing on the ground.

In some embodiments, the upper portion of the front wheel support is rotatably connected to the lower portion of the side bar frame about a first rotation center line, the upper portion of the rear wheel support is rotatably connected to the side bar frame about a second rotation center line, the frame is in a deployed state, the first rotation center line and the second rotation center line are parallel to each other, and the second rotation center line is located above the first rotation center line in a length extending direction of the side bar frame.

In some embodiments, the strut frame is rotatably connected to the rear wheel bracket about a third rotation center line, the rear portion of the link frame is rotatably connected to the rear wheel bracket about a fourth rotation center line, the frame in the unfolded state, the link frame extends gradually downward from front to back, and in a length extending direction of the rear wheel bracket, the third rotation center line is located above the fourth rotation center line.

In some embodiments, the frame further comprises a seat frame extending in a front-rear direction in a deployed state, a rear portion of the seat frame is rotatably connected to the strut frame, and a third slider is rotatably provided on the side rod frame and slidably provided on the seat frame in a length extending direction of the seat frame.

In some embodiments, the side bar frame and the push bar frame extend along the same length direction when the frame is in a unfolded state, and an included angle between the length extending direction of the front wheel bracket and the length extending direction of the side bar frame is an obtuse angle.

In some embodiments, the front wheel support comprises two groups of front struts which are respectively arranged at the left side and the right side and extend in the up-down direction, the rear wheel support comprises two groups of rear struts which are respectively arranged at the left side and the right side and extend in the up-down direction, the side rod support comprises two groups of side rods which are respectively arranged at the left side and the right side and extend in the up-down direction, the push rod support comprises two groups of push rods which are respectively arranged at the left side and the right side and extend in the up-down direction, the support comprises two groups of support rods which are respectively arranged at the left side and the right side and extend in the up-down direction, the connecting frame comprises two groups of connecting rods which are respectively arranged at the left side and the right side and extend in the up-down direction,

the upper part of the front strut is rotationally connected with the lower part of the side rod, the upper part of the side rod is rotationally connected with the push rod, the upper part of the rear strut is rotationally connected with the side rod, the stay bar is mutually intersected with the rear strut and rotationally connected with the lower part of the push rod, the lower part of the stay bar is rotationally connected with a group of second sliding parts, the rear part of the connecting rod is rotationally connected with the rear supporting rod, the front part of the connecting rod is rotationally connected with a group of first sliding parts, the first sliding parts are slidingly arranged on the front supporting rod, and the second sliding parts are slidingly arranged on the connecting rod.

In some embodiments, the first sliding piece is a sliding sleeve slidably sleeved on the front supporting rod; and/or the second sliding piece is a sliding sleeve which can be sleeved on the connecting rod in a sliding way.

In some embodiments, the front wheel support, the rear wheel support and the push rod rest are each fixed in width in the left-right direction, and in other embodiments, the front wheel support, the rear wheel support and the push rod rest are each provided so as to be foldable in the left-right direction.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: in the children cart, the frame only comprises the front wheel bracket, the rear wheel bracket, the side rod brackets, the push rod brackets, the stay rod brackets and the connecting frame, the number of the rod pieces is small, the structure is simple, and when the children cart is folded, the push rod brackets only need to be driven to move backwards and downwards, so that the rod pieces in the linked frame can be mutually rotated to be mutually folded, the size of the folded frame is reduced, and convenience is brought to daily carrying and use of users.

Drawings

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

FIG. 2 is a schematic side view of the child stroller of FIG. 1;

FIG. 3 is a schematic perspective view of the child stroller of FIG. 1 in a semi-collapsed condition;

FIG. 4 is a schematic side view of the child stroller of FIG. 3;

FIG. 5 is a schematic perspective view of the child stroller of FIG. 1 in a collapsed configuration;

FIG. 6 is a schematic side view of the child stroller of FIG. 5;

wherein: 1. a front wheel bracket; 11. a front strut; 11a, an upper joint; 12. a front cross bar; 2. a rear wheel bracket; 21. a rear strut; 22. a rear cross bar; 3. a side rod frame; 31. a side bar; 31a, a lower joint; 4. a push rod frame; 41. a push rod; 42. an upper cross bar; 5. a connecting frame; 51. a connecting rod; 6. a brace bar frame; 61. a brace rod; 7. a first slider; 8. a second slider; 9. a seat rod; 10. a third slider; 20. a front wheel assembly; 30. and a rear wheel assembly.

Detailed Description

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

The following description of the directions such as front, rear, left, right, up, down and the like is defined with reference to the directions that a user observes when pushing the stroller in a state where the frame of the stroller is unfolded, and only aims to clearly describe the relative positional relationship of the respective rods/members in the stroller.

Referring to fig. 1-6, a stroller includes a frame having an expanded configuration and a collapsed configuration, front and rear wheel assemblies 20, 30 disposed at the bottom of the frame, and a locking mechanism for locking the frame in the expanded configuration.

The frame comprises a front wheel bracket 1, a rear wheel bracket 2, a side rod bracket 3, a connecting frame 5, a push rod bracket 4 and a support rod bracket 6, wherein the frame is in an unfolding state, the front wheel bracket 11 extends obliquely backwards from bottom to top as shown in fig. 1 to 3, and a front wheel assembly 20 is arranged at the bottom of the front wheel bracket 1; the rear wheel bracket 2 extends forwards in a tilting way from bottom to top, and the rear wheel assembly 30 is arranged at the bottom of the rear wheel bracket 2; the side bar frame 3 extends along the up-down direction, the lower part of the side bar frame 3 is rotationally connected with the upper part of the front wheel bracket 1, and the upper part of the rear wheel bracket 2 is rotationally connected with the side bar frame 3; the connecting frame 5 extends along the front-rear direction, the rear part of the connecting frame 5 is rotationally connected to the rear wheel bracket 2, the front part of the connecting frame 5 is rotationally connected with a first sliding piece 7, and the first sliding piece 7 can be slidingly arranged on the front wheel bracket 1 along the length extending direction of the front wheel bracket 1; the push rod frame 4 extends along the up-down direction, and the upper part of the side rod frame 3 is rotatably connected to the push rod frame 4; the stay bar frame 6 extends in the up-down direction, the stay bar frame 6 and the rear wheel bracket 2 are mutually intersected and rotatably connected at the intersection, the upper part of the stay bar frame 6 is rotatably connected with the lower part of the push bar frame 4, the lower part of the stay bar frame 6 is rotatably connected with a second sliding piece 8, and the second sliding piece 8 can be slidably arranged on the connecting frame 5 along the length extending direction of the connecting frame 5.

When the frame is folded, the push rod frame 4 is driven to move downwards and backwards, the side rod frame 3 is driven to turn backwards relative to the front wheel frame 1, the support rod frame 6 is turned backwards relative to the rear wheel frame 2, the second sliding piece 8 can slide forwards along the connecting frame 5 in a linkage mode, the first sliding piece 7 slides upwards along the front wheel frame 1, the front wheel frame 1 and the rear wheel frame 2 are gradually folded along the front-rear direction, and finally the front wheel frame 1, the connecting frame 5, the rear wheel frame 2, the support rod frame 6, the side rod frame 3 and the push rod frame 4 are mutually folded along the front-rear direction.

The frame further comprises a seat frame extending in the fore-and-aft direction in the unfolded state, the rear part of the seat frame being rotatably connected to the stay frame 6, the side bar frame 3 being rotatably provided with a third slider 10, the third slider 10 being slidably provided on the seat frame in the longitudinal extension direction of the seat frame. During the folding of the frame, the seat frame rotates relative to the strut frame 6, and the third slider 10 slides relative to the seat frame and rotates relative to the side frames 3, so that the seat frame is folded together with the side frames 3 and the strut frame 6.

Referring to the drawings, in this embodiment, each rod in the frame is specifically configured as follows:

the front wheel bracket 1 comprises two groups of front supporting rods 11 which are respectively arranged at the left side and the right side and extend along the up-down direction, and a front cross rod 12 which is fixedly arranged between the lower parts of the two groups of front supporting rods 11, wherein a group of front wheel assemblies 20 are respectively arranged at the bottom of each group of front supporting rods 11, and the two groups of front supporting rods 11 respectively extend obliquely outwards from bottom to top along the left-right direction, so that the distance between the lower parts of the two groups of front supporting rods 11 along the left-right direction is smaller than the distance between the upper parts of the two groups of front supporting rods 11.

The side bar frame 3 includes two sets of side bars 31 which are respectively provided on the left and right sides and extend in the up-down direction, and the lower portion of each set of side bars 31 is rotatably connected with the upper portion of the front strut 11 on the same side about a first rotation center line X1, the first rotation center line X1 extending horizontally in the left and right direction. Here, the upper portion of the front strut 11 has an upper joint 11a extending rearward, the lower portion of the side bar 31 has a lower joint 31a extending rearward, the upper joint 11a and the lower joint 31a are rotatably connected about a first rotation center line X1, so that the front strut 11 and the side bar 31 are rotatably connected, and in the unfolded state of the frame, the upper portion of the front strut 11 and the lower portion of the side bar 31 are abutted in the up-down direction, and the first rotation center line X1 is located rearward of the front strut 11 and the side bar 31.

The rear wheel bracket 2 comprises two groups of rear supporting rods 21 which are respectively arranged at the left side and the right side and extend along the up-down direction, and a rear cross rod 22 which is fixedly arranged between the lower parts of the two groups of rear supporting rods 21, and a group of rear wheel assemblies 30 are respectively arranged at the lower parts of each group of rear supporting rods 21. The upper part of each side rear strut 21 is rotatably connected to the side bar 31 on the same side about a second rotation center line X2, the second rotation center line X2 is parallel to the first rotation center line X1, and the second rotation center line X2 is located above the first rotation center line X1 in the length extending direction of the side bar 31.

The push rod rack 4 comprises two groups of push rods 41 which are respectively arranged at the left side and the right side and extend along the up-down direction, and an upper cross rod 42 which is fixedly arranged between the upper parts of the two groups of push rods, wherein the upper cross rod 42 and the two groups of push rods 41 are integrally arranged into a U-shaped rod with a downward opening. The strut frame 6 includes two sets of struts 61 respectively disposed on the left and right sides and extending in the up-down direction, and the connecting frame 5 includes two sets of connecting rods 51 respectively disposed on the left and right sides and extending in the front-rear direction, and the first sliding member 7 and the second sliding member 8 each have two sets respectively disposed on the left and right sides.

Wherein, on each side of the frame, the stay 61 and the rear strut 21 are crossed with each other and are rotationally connected around the third rotation center line X3 at the crossing, the rear part of the connecting rod 51 is rotationally connected to the rear strut 21 around the fourth rotation center line X4, the front part of the connecting rod 51 is rotationally connected with the first sliding piece 7, the first sliding piece 7 is a first sliding sleeve, and the first sliding sleeve is sleeved on the front strut 11 in a sliding fit manner;

the upper part of the stay 61 is rotatably connected to the lower part of the push rod 41 about a fifth rotation center line X5, the upper part of the side rod 31 is rotatably connected to the push rod 41 about a sixth rotation center line X6, the lower part of the stay 61 is rotatably connected to the second slide 8, which second slide 8 is here a second slide sleeve, which second slide sleeve is slidably fitted over the connecting rod.

The third rotation center line X3, the fourth rotation center line X4, the fifth rotation center line X5, and the sixth rotation center line X6 are all parallel to the first rotation center line X1 and the second rotation center line X2, and the fourth rotation center line X4 is located below the third rotation center line X3 along the length extension direction of the rear strut 21; the fifth rotation center line X5 is located below the sixth rotation center line X6 in the length extending direction of the push rod 41.

The seat frame comprises two seat rods 9 which are respectively arranged at the left side and the right side and extend along the front-back direction, the left side and the right side of the frame are respectively provided with a rear part of the seat rod 9 which is rotationally connected with a stay rod 61 around a seventh rotation center line X7, a side rod 31 is rotationally connected with a third sliding piece 10, the third sliding piece 10 is specifically a third sliding sleeve, and the third sliding piece is sleeved on the seat rod 9 in a sliding fit manner. The seventh rotation center line X7 is located above the third rotation center line X3 and below the fifth rotation center line X5 along the length extending direction of the stay 61; the third slider 10 is provided on the side lever 31 above the second rotation center line X2.

Referring to fig. 1 to 3, in the unfolded state of the frame, the angle between the longitudinal extension direction of the front strut 11 and the longitudinal extension direction of the side bar 31 is an obtuse angle, the side bar 31 and the push bar 41 extend along the same longitudinal direction, the connecting bar 51 extends gradually downward from front to back, the stay 61 is supported between the push bar 41, the rear strut 21 and the connecting bar 51 along the up-down direction, and the frame structure in the unfolded state is simple.

When the frame needs to be folded, as shown in fig. 3 and 4, after the locking mechanism on the frame is unlocked, the push rod frame 4 is forced downwards, so that the push rod frame 4 moves towards the rear lower side of the rear wheel bracket 2, the side rod frame 3 and the strut frame 6 are turned backwards through linkage, the second sliding piece 8 slides forwards along the connecting frame 5 through linkage, the first sliding piece 7 slides upwards along the front wheel bracket 1, and the front wheel bracket 1, the connecting frame 5 and the rear wheel bracket 2 rotate and fold along the front-rear direction.

After the folding, the frame is shown in fig. 5, wherein the side bar frame 3 and the push bar frame 4 are folded at the rear of the rear wheel frame 2, the front wheel frame 1, the connecting frame 5 and the rear wheel frame 2 are folded in sequence along the front-rear direction, and the supporting bar frame 6 is folded among the connecting frame 5, the rear wheel frame 2 and the side bar frame 3. Wherein the first slider 7 is slid to an upper position of the front strut 11 such that the link 5 overlaps the front wheel bracket 1 as much as possible in the height direction; the second slider 8 is slid to the front position of the connecting rod 51, also near the upper position of the front wheel bracket 1, so that the stay 6 also overlaps the front wheel bracket 1 in the height direction as much as possible, facilitating the reduction of the overall height of the folded vehicle frame. The two sets of front wheel assemblies 20 are located between the two sets of rear wheel assemblies 30 in the left-right direction, and the front wheel assemblies 20 and the rear wheel assemblies 30, and the lower portions of the push rod frames 4 are commonly supported on the ground so that the folded frame is free-standing on the ground. In the child cart in the folded state, the rods are tightly folded together, the occupied space is small, the structure is flat and compact, and convenience is brought to daily storage and carrying of users.

In other embodiments, the front wheel bracket 1, the rear wheel bracket 2 and the push rod bracket 4 may be configured to be foldable in the left-right direction, so that the folded frame may be folded further in the left-right direction to further reduce the folded volume of the frame.

The above embodiments are only for illustrating 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 to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a children's shallow, includes the frame that has expansion state and folding state, locates front wheel subassembly and rear wheel subassembly of frame bottom, its characterized in that: in the unfolded state, the frame comprises:

2. The stroller of claim 1, wherein: in the process of converting the frame from the unfolding state to the folding state, the first sliding piece slides upwards along the front wheel support, and the second sliding piece slides forwards along the connecting frame, so that the front wheel support, the connecting frame, the rear wheel support, the stay bar frame, the side bar frame and the push bar frame are mutually folded together along the front-rear direction.

3. The stroller of claim 1, wherein: the frame is in under the folded condition, the side rod frame with the push rod frame draws in the rear of rear wheel support, the front wheel support the link frame reaches the rear wheel support draws in proper order along the fore-and-aft direction, the vaulting pole frame draws in the link frame the rear wheel support reaches between the side rod frame.

4. A stroller according to claim 3, wherein: the frame is in a folded state, and the front wheel assembly and/or the rear wheel assembly and the lower part of the push rod frame are supported on the ground together so that the frame is self-standing on the ground.

5. The stroller of claim 1, wherein: the upper portion of front wheel support with the lower part of side lever frame rotates ground around first rotation central line and is connected, the upper portion of rear wheel support around the second rotation central line rotationally connect in on the side lever frame, the frame is in under the state of expanding, first rotation central line with the second rotation central line is parallel to each other, and follows on the length extension direction of side lever frame, the second rotation central line is located the top of first rotation central line.

6. The stroller of claim 1, wherein: the support rod frame is rotationally connected with the rear wheel support around a third rotation center line, the rear part of the connecting frame is rotationally connected with the rear wheel support around a fourth rotation center line, the frame is in a unfolding state, the connecting frame gradually extends downwards in a tilting mode from front to back, and is positioned above the fourth rotation center line along the length extending direction of the rear wheel support.

7. The stroller of claim 1, wherein: the frame also comprises a seat frame which extends along the front-back direction in the unfolded state, the rear part of the seat frame is rotationally connected to the support rod frame, a third sliding piece is rotationally arranged on the side rod frame, and the third sliding piece can be slidingly arranged on the seat frame along the length extending direction of the seat frame.

8. The stroller of claim 1, wherein: the frame is in the state of expanding, the side rod frame with the push rod frame extends along same length direction, the length direction of extending of front wheel support with the contained angle between the length direction of extending of side rod frame is the obtuse angle.

9. A stroller according to any one of claims 1 to 8, wherein: the front wheel support comprises two groups of front struts which are respectively arranged at the left side and the right side and extend along the up-down direction, the rear wheel support comprises two groups of rear struts which are respectively arranged at the left side and the right side and extend along the up-down direction, the side rod frame comprises two groups of side rods which are respectively arranged at the left side and the right side and extend along the up-down direction, the push rod frame comprises two groups of push rods which are respectively arranged at the left side and the right side and extend along the up-down direction, the support rod frame comprises two groups of support rods which are respectively arranged at the left side and the right side and extend along the up-down direction, the connecting frame comprises two groups of connecting rods which are respectively arranged at the left side and the right side and extend along the front-back direction,

10. The stroller of claim 9, wherein: the first sliding piece is a sliding sleeve which is sleeved on the front supporting rod in a sliding manner; and/or the second sliding piece is a sliding sleeve which can be sleeved on the connecting rod in a sliding way; and/or the front wheel bracket, the rear wheel bracket and the push rod bracket are respectively fixed in width along the left-right direction or respectively arranged in a manner of being folded along the left-right direction.