Disclosed is a children's vehicle, which comprises a main vehicle frame extending in a front-rear direction, two front wheels disposed respectively on the left and right sides of the bottom-front portion of the main vehicle frame, a joystick extending upwardly inclined from front to rear, a sliding member slidingly disposed on the main vehicle frame, and a connecting bar rotatably connected between the joystick and the sliding member, wherein a lower portion of the joystick is connected to rotatably a front portion of the main vehicle frame. The children's vehicle further comprises first connecting rods, one end of each of which is rotatably connected on the main vehicle frame, and second connecting rods rotatably connected between the first connecting rods and the sliding member, the front wheels are mounted on the other ends of the first connecting rods. When the children's vehicle switches from an unfolded state to a folded state, the joystick is folded close to the main vehicle frame, the second connecting rods drive the first connecting rods to close to the main vehicle frame, and the two front wheels are folded close to the left and right sides of the main vehicle frame. When folded, the children's vehicle is very flat and compact, and the overall height and width thereof are greatly reduced.

In an aspect, a pivot joint for a collapsing foot-deck-based vehicle is described, comprising a foot deck, at least two wheels coupled to the foot deck, and a handlebar assembly coupled to the foot deck via a locking pivot joint, also referred to as a locking swivel joint, the handlebar assembly comprising at least one handle, the locking pivot joint having a pivot axis that is generally unparallel with a horizontal plane defined by the lowermost surfaces of the at least two wheels, the handlebar assembly being selectively pivotable via the locking pivot joint between a riding configuration in which the handle is generally distal from the foot deck and a collapsed configuration in which the handle is generally proximal to the foot deck.

In an aspect, a pivot joint for a collapsing foot-deck-based vehicle is described, comprising a foot deck, at least two wheels coupled to the foot deck, and a handlebar assembly coupled to the foot deck via a locking pivot joint, also referred to as a locking swivel joint, the handlebar assembly comprising at least one handle, the locking pivot joint having a pivot axis that is generally unparallel with a horizontal plane defined by the lowermost surfaces of the at least two wheels, the handlebar assembly being selectively pivotable via the locking pivot joint between a riding configuration in which the handle is generally distal from the foot deck and a collapsed configuration in which the handle is generally proximal to the foot deck.

A walker specialized for use on trails by pushing and walking, rather than riding on, with no drivetrain, along with a method of using the walker on trails is provided. The walker can include a frame, two inline wheels, and a handlebar steering mechanism. The walker can further include a braking mechanism, an elbow rest, an electric motor, and racks and/or carriers for gear.

A handlebar foldable mechanism and a tool for riding instead of walk are provided. The handlebar foldable mechanism includes a base, a stem, a first locking assembly, a lever and a second locking assembly. The base is provided with a first snapping groove, the stem is connected to the base and is pivotable between an unfolded position and a folded position, the first locking assembly is pivotably connected to the stem and is configured to be engaged with the first snapping groove when the stem is pivoted from the folded position to the unfolded position, the lever is pivotably connected with the base, the second locking assembly is mounted to the lever, and the second locking assembly is configured to be connected to at least one of the base and the stem when the stem is at the unfolded position.

A handlebar foldable mechanism and a tool for riding instead of walk are provided. The handlebar foldable mechanism includes a base, a stem, a first locking assembly, a lever and a second locking assembly. The base is provided with a first snapping groove, the stem is connected to the base and is pivotable between an unfolded position and a folded position, the first locking assembly is pivotably connected to the stem and is configured to be engaged with the first snapping groove when the stem is pivoted from the folded position to the unfolded position, the lever is pivotably connected with the base, the second locking assembly is mounted to the lever, and the second locking assembly is configured to be connected to at least one of the base and the stem when the stem is at the unfolded position.

A folding bicycle and method for folding the folding bicycle is provided. The folding bicycle comprises a frame having a first end and a second end; a first wheel connected to the second end of the frame, the first wheel and the frame being located in a first plane; a fork having a first end and a second end, the second end of the fork pivotally connected to the first end of the frame thereby allowing the fork to pivot about the first plane; a second wheel connected to the first end of the fork, the second wheel and the fork being located in a second plane; a first pivot member having a first pivot axis to allow the first end of the fork to pivot towards the second end of the fork about the first pivot axis; a second pivot member having a second pivot axis to allow the first end of the frame to pivot towards the second end of the frame about the second pivot axis; and a third pivot member having a third pivot axis to allow the second end of the frame to pivot towards the first end of the frame about the third pivot axis.

A variety of scooters are disclosed. In some embodiments, a scooter can include a pivot assembly that allows the scooter to move between a folded and unfolded configuration. The pivot assembly can include a knob that frees a pin from a bracket to allow the scooter to fold. Turing the knob increases compressive forces on elements of the pivot assembly to reduce rattling noise and wobbling movement when the scooter is in use. Some embodiments of the scooter can include a center stand that can be deployed from either side of the scooter deck to stabilize the scooter when the scooter is stationary. Certain embodiments have an ergonomic handgrip.

The device provides an energy return mechanism associated with flexing and straightening of the scooter rider's support leg. The device includes an energy return mechanism having an end connected to the scooter such that resilient force exerted by the mechanism is longitudinally aligned with the scooter to act in a generally rearward/upward direction. A free end of the mechanism cradles the front of the rider's support leg, just below the knee. When the rider flexes the support leg, the resilient mechanism distorts in a longitudinal direction. When the rider straightens the leg, the forces stored in the resilient mechanism supplement the force of the rider's muscles. Thus, the device reduces the amount of energy used by the rider. The mechanism can be configured as an accessory to a conventional scooter or be integrated into a scooter. Certain embodiments are foldable and compatible with the foldable scooters.

An electric vehicle includes a stem and a base with wheels. The base is at a first end of the stem, with symmetrical elements of the base opposed across a stem axis. Elements on each side include a wheel, a drive motor, a platform and pivot joints. The wheel has an axis of rotation. The drive motor is connected to the wheel. The platform is between the wheel and the stem. A first pivot joint connects the stem and the platform. A second pivot joint connects the platform and the wheel. In a first orientation, the platforms are substantially perpendicular to the stem and in a second orientation the platforms are substantially parallel to the stem. The wheel axes are substantially parallel to each other and are substantially perpendicular to the stem axis in the first orientation and the second orientation.