US 2013/0076009 A1Published application

Foldable stroller frame having three sections joined to and foldable around a common hub structure

AssigneeBaby Trend, Inc.

InventorsDenny TSAI, Jung Tsai Chen

Life of this patent

Estimating the term…

Loading patent…

Abstract

A foldable stroller frame has three sections (a lower-front section, a lower-rear section, and an upper-rear section) joined to and foldable around a common hub structure. The hub structure includes two hubs located on the left and right sides of the stroller frame. In at least one of the hubs, a bracket structure is mounted to the lower-rear section and holds two gears which are attached to the lower-front section and upper-rear section, respectively. The two gears are engaged with each other, so that the lower-front section and upper-rear section rotate in synchrony with respect to the lower-rear section when the stroller frame is being folded. The hub also includes a releasable locking mechanism, which is controlled by a pull trigger located on the upper-rear section of the stroller near the push handles, for locking the stroller frame in the unfolded state.

Claims11

Dependent claims

A foldable stroller frame comprising:

a lower-front section;
a lower-rear section;
an upper-rear section having an end section forming a push handle of the stroller;
and
a hub structure,
wherein the lower-front section, the lower-rear section and the upper-rear section are joined to the hub structure and are foldable with respect to one another around the hub structure,
wherein the hub structure includes a first gear and a second gear, the first gear being fixedly attached to one of the lower-front section, the lower-rear section and the upper-rear section, the second gear being fixedly attached to another one of the lower-front section, the lower-rear section and the upper-rear section, and the first and second gear being engaged with each other and rotating when the stroller frame changes between an unfolded state and a folded state, the hub structure further including a releasable locking structure for preventing the lower-front section, the lower-rear section and the upper-rear section from folding with respect to one another around the hub structure,
wherein the stroller frame further comprises a pull trigger located on the upper-rear section and connected to the releasable locking structure for releasing the locking structure to allow the lower-front section, the lower-rear section and the upper-rear section to fold with respect to one another around the hub structure.

5 more elements

A foldable stroller frame comprising:

a first section;
a second section;
a third section;
a hub structure;
and
a pull trigger located on one of the first, second or third sections,
wherein the first, second and third sections are joined to the hub structure and are foldable with respect to one another around the hub structure,
wherein the hub structure includes a first hub located on one side of the stroller frame, wherein each of the first, second and third sections includes a bar joined to the first hub, wherein the first hub includes:
a bracket structure fixedly mounted on an end of the bar of the first section;
a first gear fixedly mounted on an end of the bar of the second section, the first gear being rotatable around a first rotation axis defined by the bracket structure;
a second gear fixedly mounted on an end of the bar of the third section, the second gear being rotatable around a second rotation axis defined by the bracket structure,
wherein the first gear and second gear are engaged with each other and rotate when the stroller frame changes between an unfolded state and a folded state;
and
a releasable locking structure for preventing the first, second and third sections from folding with respect to one another around the first hub, and
wherein the pull trigger located on one of the first, second or third sections is connected to the releasable locking structure for releasing the locking structure to allow the first, second and third sections to fold with respect to one another around the hub structure.

12 more elements

Dependencies are inferred from the claim text.