A stroller frame, comprising at least one motor, particularly an electric motor, for assisted driving of the stroller frame, a pusher bar for pushing the stroller frame and at least one force sensor device for detecting a direction and/or an amount of force and/or a force component acting on the pusher bar, and/or for detecting a value derived from said force or force component, particularly a temporal change of the force or force component.

Disclosed are a child seat frame and a compact foldable stroller. The child seat frame comprises a seat mounting part, a lower frame body, and an upper frame body, wherein the upper frame body is provided with an upper frame body lock which can be actuated to lock and disengage from a second latch part, and the upper frame body is pivotable relative to a lower seat frame hub when the upper frame body lock is disengaged from the lower seat frame hub; and when the lower frame body pivots relative to the seat mounting part, the upper frame body lock locks over the second latch part. The child seat frame can be folded in a main suitable for the folding boundary dimensions of a main stroller frame, thereby maintaining the folding dimensions of a stroller unit to a minimum.

A collapsible or foldable stroller frame is disclosed herein. The stroller frame is configured to be folded into a compact size using a series of connections between a handle portion, front leg portion, and rear leg portion. In one aspect, a basket assembly is also provided that is attached to the stroller frame and is configured to fold into a perimeter defined by the folded stroller frame. In another aspect, an adaptor assembly is provided that allows for a connection or support interface between a carrier and the stroller frame.

A seat height adjustment mechanism includes a locking bar and a locking element. The locking bar is disposed in a stroller frame and has locking holes spaced apart. Each of the locking holes has a stop portion protruding therein. The locking element is mounted on a seat and has an engaging end. The engaging end is separably engaged in any one of the locking holes and has an engaging hook protruding in a direction, and the direction is crossed with another direction in which the engaging end moves when the engaging end is separating from the locking hole. The engaging hook separably presses against the stop portion. Therefore, the engaging end cannot separate from the locking hole. Even when wrongly operated, the locking element cannot be rotated and unlocked and thereby prevents the seat from unnecessarily sliding downward, so as to ensure safety of a baby at the seat.

The invention relates to a child carrying device that includes a stroller configuration and a wagon configuration. The child carrying device comprises a support frame that may be rotated from an angled orientation in the stroller configuration to a substantially horizontal position in the wagon configuration.

A synchronous folding mechanism is adapted to be mounted to a stroller, and includes a rear joint, a handlebar joint, a front joint, a swing member and a first link member. The handlebar joint and the front joint are rotatably connected to the rear joint. The swing member has opposite end portions, one of which is rotatably connected to the rear joint. The first link member is rotatably connected to the other one of the end portions of the swing member, and is rotatably connected to one of the handlebar joint and the front joint. Rotation of the one of the handlebar joint and the front joint drives a swinging movement of the swing member relative to the rear joint and a movement of the first link member relative to the rear joint.

A seat height adjustment mechanism includes a locking bar and a locking element. The locking bar is disposed in a stroller frame and has locking holes spaced apart. Each of the locking holes has a stop portion protruding therein. The locking element is mounted on a seat and has an engaging end. The engaging end is separably engaged in any one of the locking holes and has an engaging hook protruding in a direction, and the direction is crossed with another direction in which the engaging end moves when the engaging end is separating from the locking hole. The engaging hook separably presses against the stop portion. Therefore, the engaging end cannot separate from the locking hole. Even when wrongly operated, the locking element cannot be rotated and unlocked and thereby prevents the seat from unnecessarily sliding downward, so as to ensure safety of a baby at the seat.

A seat includes a support base, an unlock member and a lock member. The support base has at least one through hole. The unlock member is movably disposed on the support base and has at least one first driving portion. The lock member is movably disposed on the unlock member. The lock member has at least one lock portion protruding from a surface of the support base through the at least one through hole and at least one second driving portion abutting against the at least one first driving portion. When the unlock member is forced in a first direction to move, the at least one lock portion is forced to move along the at least one first driving portion through the at least one second driving portion and retracts into the support base in a second direction different from the first direction.

A synchronous folding mechanism is adapted to be mounted to a stroller, and includes a rear joint, a handlebar joint, a front joint, a swing member and a first link member. The handlebar joint and the front joint are rotatably connected to the rear joint. The swing member has opposite end portions, one of which is rotatably connected to the rear joint. The first link member is rotatably connected to the other one of the end portions of the swing member, and is rotatably connected to one of the handlebar joint and the front joint. Rotation of the one of the handlebar joint and the front joint drives a swinging movement of the swing member relative to the rear joint and a movement of the first link member relative to the rear joint.

A child stroller includes a stroller frame having an unfolded state and a first folded state, and includes a left support frame on a left side, a right support frame on a right side. Each of the left support frame and the right support frame includes a first bottom frame and a second bottom frame being a telescopic rod assembly, and includes an upper rod with a lower end portion connected to one of the second wheel assemblies and a lower rod disposed below the upper rod and slidably connected to the upper rod in an up-down direction. When the stroller frame in the unfolded state, one of the first bottom frame and the second bottom frame is inclined upward from front to rear, and the other one is inclined upward from rear to front.