US 11,904,925 B2Granted

Folding stroller

AssigneeGoodbaby Child Products Co., Ltd.

InventorsFusheng Ma, Xingrong Zhang, Yang Zhang, Pingzhong Shi

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Abstract

A folding stroller, including a frame capable of being unfolded and folded, and a front wheel and a rear wheel, wherein the frame including a push rod connected to the front wheel at a bottom, and a rear support connected to the rear wheel at a bottom, any two of the push rod, the front support and the rear support are rotatably connected with each other, the remaining one is rotatably connected to at least one of the two, and when the frame is in an unfolded state, the push rod, the front support and the rear support are unfolded with respect to one another, and when the frame is in a folded state, the push rod, the front support and the rear support are close to one another, and the front wheel and the rear wheel are turned so that axles thereof extend along a front-rear direction.

Claims19

Dependent claims

A folding stroller comprising:

a frame capable of being unfolded and folded;
a front wheel connected to a bottom of the frame;
and
a rear wheel connected to a bottom of the frame, wherein the frame comprises a push rod, a front support connected to the front wheel at a bottom, and a rear support connected to the rear wheel at a bottom, any two of the push rod, the front support and the rear support are rotatably connected with each other, a remaining one is rotatably connected to at least one of the two;
wherein, when the frame is in an unfolded state, the push rod, the front support and the rear support are unfolded with respect to one another, and when the frame is in a folded state, the push rod, the front support and the rear support are close to one another, and the front wheel and the rear wheel are turned so that axles thereof extend along a front-rear direction;
wherein a first wheel turnover mechanism is provided between the front support and the front wheel, a second wheel turnover mechanism is provided between the rear support and the rear wheel, and the first wheel turnover mechanism and the second wheel turnover mechanism both act to turn over the front wheel and the rear wheel respectively during a transition of the frame from the unfolded state to the folded state;
wherein at least one of the first wheel turnover mechanism and the second wheel turnover mechanism comprises a wheel connector capable of being pivotally and slidably connected with the front support or the rear support and comprising a spiral groove, a drive rod provided on the front support or the rear support and capable of being slidably connected with the spiral groove, and a drive part driven to move by folding the frame and capable of driving the wheel connector to slide, and the front wheel or the rear wheel is mounted on the wheel connector.

4 more elements

A folding stroller comprising:

a frame capable of being unfolded and folded;
a front wheel connected to a bottom of the frame;
and
a rear wheel connected to a bottom of the frame, wherein the frame comprises a push rod, a front support connected to the front wheel at a bottom, and a rear support connected to the rear wheel at a bottom, any two of the push rod, the front support and the rear support are rotatably connected with each other, a remaining one is rotatably connected to at least one of the two;
wherein, when the frame is in an unfolded state, the push rod, the front support and the rear support are unfolded with respect to one another, and when the frame is in a folded state, the push rod, the front support and the rear support are close to one another, and the front wheel and the rear wheel are turned so that axles thereof extend along a front-rear direction;
wherein a first wheel turnover mechanism is provided between the front support and the front wheel, a second wheel turnover mechanism is provided between the rear support and the rear wheel, and the first wheel turnover mechanism and the second wheel turnover mechanism both act to turn over the front wheel and the rear wheel respectively during a transition of the frame from the unfolded state to the folded state;
wherein the frame further comprises:
an upper push rod rotatably connected with an upper portion of the push rod;
an upper connecting rod, an upper portion thereof being rotatably connected with a lower portion of the upper push rod, and the upper connecting rod being rotatably connected with the rear support;
a front connecting rod, a front portion thereof being rotatably connected with the front support;
a rear connecting rod, a front portion thereof being rotatably connected with the front connecting rod, and a rear portion of the rear connecting rod being rotatably connected with the rear support;
and
a lower sliding sleeve slidably connected to the rear connecting rod along a length direction of the rear connecting rod, a lower portion of the upper connecting rod being rotatably connected with the lower sliding sleeve.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/280,957Filed 14 Nov 2019
Priority: CN 201811146816.X29 Sep 2018
Published: US 2021/0380155 A19 Dec 2021
Granted: 20 Feb 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B62B 7/08
Collapsible or foldable: in the direction of, or at right angles to, the wheel axis
B62B 7/062
Collapsible or foldable: coupling unit between front wheels, rear wheels and handle
B62B 7/142
With detachable or rotatably-mounted body: means for securing the body to the frame
B62B 2205/121
Collapsible wheels: stowed on top of each other