A collapsible stroller comprising a handle assembly, a front leg assembly and a rear leg assembly pivotably connected to one another such that the stroller is able to be moved between a folded configuration, where the front leg and handle assemblies are folded to positions substantially adjacent to the rear leg assembly, and an unfolded configuration, where the front leg and handle assemblies are unfolded to positions away from the rear leg assembly, and a link assembly comprising a front member and a rear member pivotally connected to one another, wherein the front member is pivotally connected to an intermediate portion of the front leg assembly and the rear member is pivotally connected to an intermediate portion of the rear leg assembly, such that when the stroller is moved to its folded configuration the front and rear members are folded toward each other to lie substantially adjacent to one another and the front and rear leg assemblies, and when the stroller is moved to its unfolded configuration the front and rear members are folded away from each other and the front and rear leg assemblies such that they are substantially coplanar with one another, and wherein the link assembly further comprises a biasing means for biasing the front and rear link members toward their unfolded positions.

A collapsible stroller comprising a handle assembly, a front leg assembly and a rear leg assembly pivotably connected to one another such that the stroller is able to be moved between a folded configuration, where the front leg and handle assemblies are folded to positions substantially adjacent to the rear leg assembly, and an unfolded configuration, where the front leg and handle assemblies are unfolded to positions away from the rear leg assembly, and a link assembly comprising a front member and a rear member pivotally connected to one another, wherein the front member is pivotally connected to an intermediate portion of the front leg assembly and the rear member is pivotally connected to an intermediate portion of the rear leg assembly, such that when the stroller is moved to its folded configuration the front and rear members are folded toward each other to lie substantially adjacent to one another and the front and rear leg assemblies, and when the stroller is moved to its unfolded configuration the front and rear members are folded away from each other and the front and rear leg assemblies such that they are substantially coplanar with one another, and wherein the link assembly further comprises a biasing means for biasing the front and rear link members toward their unfolded positions.

A collapsible stroller comprising a handle assembly, a front leg assembly and a rear leg assembly pivotably connected to one another such that the stroller is able to be moved between a folded configuration, where the front leg and handle assemblies are folded to positions substantially adjacent to the rear leg assembly, and an unfolded configuration, where the front leg and handle assemblies are unfolded to positions away from the rear leg assembly, and a link assembly comprising a front member and a rear member pivotally connected to one another, wherein the front member is pivotally connected to an intermediate portion of the front leg assembly and the rear member is pivotally connected to an intermediate portion of the rear leg assembly, such that when the stroller is moved to its folded configuration the front and rear members are folded toward each other to lie substantially adjacent to one another and the front and rear leg assemblies, and when the stroller is moved to its unfolded configuration the front and rear members are folded away from each other and the front and rear leg assemblies such that they are substantially coplanar with one another, and wherein the link assembly further comprises a biasing means for biasing the front and rear link members toward their unfolded positions.

A collapsible stroller comprising a handle assembly, a front leg assembly and a rear leg assembly pivotably connected to one another such that the stroller is able to be moved between a folded configuration, where the front leg and handle assemblies are folded to positions substantially adjacent to the rear leg assembly, and an unfolded configuration, where the front leg and handle assemblies are unfolded to positions away from the rear leg assembly, and a link assembly comprising a front member and a rear member pivotally connected to one another, wherein the front member is pivotally connected to an intermediate portion of the front leg assembly and the rear member is pivotally connected to an intermediate portion of the rear leg assembly, such that when the stroller is moved to its folded configuration the front and rear members are folded toward each other to lie substantially adjacent to one another and the front and rear leg assemblies, and when the stroller is moved to its unfolded configuration the front and rear members are folded away from each other and the front and rear leg assemblies such that they are substantially coplanar with one another, and wherein the link assembly further comprises a biasing means for biasing the front and rear link members toward their unfolded positions.

Foldable strollers and related methods are disclosed herein. An example frame for use with a stroller includes a first leg, a second leg, a first joint to couple the first leg and the second leg, a handle arm, and a second joint to couple the handle arm and the first leg. The second joint includes a first portion having a pocket and a second portion including a lock slidably disposed in the second portion. The lock is to be removably coupled to the pocket. The handle arm is to rotate relative to the first leg via the second joint when the lock is removed from the pocket. The rotation of the handle via the second joint is to enable the second leg to rotate relative to the first leg via the first joint to fold the frame.

Foldable strollers and related methods are disclosed herein. An example frame for use with a stroller includes a first leg, a second leg, a first joint to couple the first leg and the second leg, a handle arm, and a second joint to couple the handle arm and the first leg. The second joint includes a first portion having a pocket and a second portion including a lock slidably disposed in the second portion. The lock is to be removably coupled to the pocket. The handle arm is to rotate relative to the first leg via the second joint when the lock is removed from the pocket. The rotation of the handle via the second joint is to enable the second leg to rotate relative to the first leg via the first joint to fold the frame.

The present invention provides a baby stroller frame linked folding device. A linked folding joint is provided on the upper end of a rear leg frame and is pivotally connected with a front leg frame and a handlebar frame. The handlebar frame comprises a lower handlebar frame that is pivotally connected to the linked folding joint, a handlebar folding clutch joint configured on the upper end of the lower handlebar frame, and an upper handlebar frame pivotally connected to the handlebar folding clutch joint. On the inner side of the linked folding joint, a seatback clutch joint is configured, for installation of a seatback frame, and a slide base is configured, which can slide along the rear leg frame, and both sides of the top end of the slide base are respectively and pivotally connected with a connecting rod, each respectively and pivotally connected to the front leg frame and the lower handlebar frame; when the upper handlebar frame turns and folds onto the lower handlebar frame, it will firstly drive the releasing push block inside the seatback clutch joint so that the seatback frame will fall down, then, the lower sliding block pushes the hook to release the slide base, so that the slide base will slide downward, causing the two connecting rods to pull the front leg frame and the handlebar frame and fold them onto the rear leg frame. Thus, the baby stroller frame can be folded all at once.

The present invention provides a baby stroller frame linked folding device. A linked folding joint is provided on the upper end of a rear leg frame and is pivotally connected with a front leg frame and a handlebar frame. The handlebar frame comprises a lower handlebar frame that is pivotally connected to the linked folding joint, a handlebar folding clutch joint configured on the upper end of the lower handlebar frame, and an upper handlebar frame pivotally connected to the handlebar folding clutch joint. On the inner side of the linked folding joint, a seatback clutch joint is configured, for installation of a seatback frame, and a slide base is configured, which can slide along the rear leg frame, and both sides of the top end of the slide base are respectively and pivotally connected with a connecting rod, each respectively and pivotally connected to the front leg frame and the lower handlebar frame; when the upper handlebar frame turns and folds onto the lower handlebar frame, it will firstly drive the releasing push block inside the seatback clutch joint so that the seatback frame will fall down, then, the lower sliding block pushes the hook to release the slide base, so that the slide base will slide downward, causing the two connecting rods to pull the front leg frame and the handlebar frame and fold them onto the rear leg frame. Thus, the baby stroller frame can be folded all at once.

A multi child stroller includes a stroller frame, a first seat and a second seat. The stroller frame includes a front section member, a rear section member, a driving member and a handle member. The driving member is movably connected to the rear section member. An end of the handle member is rotatably connected to the front section member, and a segment of the handle member adjacent to the foresaid end is rotatably connected to the rear section member. When the front section member and the handle member are rotated relative to each other, the driving member is rotated relative to the rear section member, the first link is utilized to rotate the first seat back relative to the first seat body, and the second seat body is utilized to rotate the second seat back relative to the second link.

A child stroller includes a stroller frame and a first seat. The stroller frame has two sections capable of being folded and unfolded relative to each other. The first seat is disposed on one of the two sections in a detachable manner. The first seat includes a supporting unit and a first seat frame. The first seat frame is adapted to hold the supporting unit. The first seat frame includes a seat hub, an upper seat tube and a lower seat tube. The seat hub is disposed on the stroller frame. The upper seat tube is disposed on the seat hub, and the supporting unit is slidably disposed on the upper seat tube. The lower seat tube is disposed on the seat hub and detachably connected to the supporting unit.