US 2026/0062044 A1Published application

Folding device and stroller

AssigneeWonderland Switzerland AG

InventorHaitao Wu

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Abstract

A folding device and a stroller are provided. The folding device includes a pivot joint mechanism, a rotating base, and a locking assembly. The pivot joint mechanism is provided with a driving member and is switchable between an unfolded state and a folded state. The rotating base is pivotally connected to the pivot joint mechanism. The rotating base is provided with a driven portion. The locking assembly is movably connected to the pivot joint mechanism or the rotating base. The locking assembly has a locking position and an unlocking position. When the pivot joint mechanism switches from the unfolded state to the folded state, the pivot joint mechanism drives the locking assembly to move from the locking position to the unlocking position, and when the locking assembly is in the unlocking position, the driving member drives the driven portion to move to cause the rotating base to rotate.

Claims20

Dependent claims

A folding device, comprising:

a pivot joint mechanism provided with a driving member and switchable between an unfolded state and a folded state;
a rotating base pivotally connected to the pivot joint mechanism and configured to be connected to a connecting assembly, the rotating base being provided with a driven portion;
and
a locking assembly movably connected to at least one of the pivot joint mechanism and the rotating base, the locking assembly having a locking position in which the locking assembly restricts the rotating base and the pivot joint mechanism from rotating relative to each other and an unlocking position in which the locking assembly allows the rotating base and the pivot joint mechanism to rotate relative to each other;
wherein when the pivot joint mechanism switches from the unfolded state to the folded state, the pivot joint mechanism drives the locking assembly to move from the locking position to the unlocking position, and when the locking assembly is in the unlocking position, the driving member drives the driven portion to move to cause the rotating base to rotate relative to the pivot joint mechanism in a first rotating direction.

2 more elements

A stroller, comprising:

a foldable stroller frame;
a pivot joint mechanism provided on the stroller frame and switchable between an unfolded state and a folded state;
a rotating base pivotally connected to the pivot joint mechanism;
a connecting assembly connected to the rotating base, at least a part of the connecting assembly forming a first plane;
and
a stroller frame locking mechanism connected to the stroller frame;
wherein the stroller frame locking mechanism is provided with an operating member;
when the operating member is subjected to a force in a first direction, the operating member drives the pivot joint mechanism to switch from the unfolded state to the folded state;
and in at least one stage of the switching process, the pivot joint mechanism drives the connecting assembly to rotate relative to the pivot joint mechanism in a first rotating direction, such that an angle formed between the first plane and the first direction is gradually increased.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/313,119Filed 28 Aug 2025
Priority: CN 202411220134.430 Aug 2024
Published: 5 Mar 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B62B 7/062
Collapsible or foldable: coupling unit between front wheels, rear wheels and handle
B62B 7/064
Collapsible or foldable: the handle bar being parallel to the front leg
B62B 9/24
Accessories or details specially adapted for children's carriages or perambulators: safety guards for children, e.g. harness
B62B 2205/20
Hand-propelled vehicles or sledges being foldable or dismountable when not in use: catches; Locking or releasing an articulation