Patent ID: 8517412
Filing Date: 2013-08-27
Classification: B62B

Abstract:
1. 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, wherein the hub structure includes a first hub located on one side of the stroller frame, wherein each of the lower-front section, the lower-rear section and the upper-rear section includes a bar joined to the first hub, wherein the first hub includes a pair of brackets fixedly mounted on an end of the bar of the lower-rear section, wherein the first gear is fixedly attached to an end of the bar of the lower-front section, the first gear being disposed between the pair of brackets and rotatable around a first rotation axis defined by the brackets, and wherein the second gear is fixedly attached to an end of the bar of the upper-rear section, the second gear being disposed between the pair of brackets and rotatable around a second rotation axis defined by the brackets.