A scooter seat device, in particular, a kick scooter seat device, with a seat base body and with at least one first fastening unit for fastening to a scooter. The first fastening unit comprises at least one support surface, which in a mounted state is provided to support the seat base body at least against a footboard of the scooter.

A scooter seat device, in particular, a kick scooter seat device, with a seat base body and with at least one first fastening unit for fastening to a scooter. The first fastening unit comprises at least one support surface, which in a mounted state is provided to support the seat base body at least against a footboard of the scooter.

A foldable bicycle has a front assembly including a front frame member supporting a front wheel and a handlebar column. A rear assembly has a rear frame member supporting a rear wheel, a seat structure and a drive mechanism. A central joint interconnects the front and rear frame members to form an articulated main frame. The articulated main frame is pivotable about a pivot axis between an assembled state such that the front and rear wheels are coplanar in a first plane that includes a vertical axis and a longitudinal axis and a collapsed state such that the front wheel is laterally offset and adjacent to the rear wheel. The front assembly rotates towards the rear assembly about the pivot axis when the articulated main frame is pivoted from the assembled state to the collapsed state.

A foldable bicycle has a front assembly including a front frame member supporting a front wheel and a handlebar column. A rear assembly has a rear frame member supporting a rear wheel, a seat structure and a drive mechanism. A central joint interconnects the front and rear frame members to form an articulated main frame. The articulated main frame is pivotable about a pivot axis between an assembled state such that the front and rear wheels are coplanar in a first plane that includes a vertical axis and a longitudinal axis and a collapsed state such that the front wheel is laterally offset and adjacent to the rear wheel. The front assembly rotates towards the rear assembly about the pivot axis when the articulated main frame is pivoted from the assembled state to the collapsed state.

An intelligent schoolbag, comprising a schoolbag body, wherein storage spaces are formed in the schoolbag body, and book selection means are arranged in the storage spaces; wheels and a driving device for driving the wheels to walk are arranged on the schoolbag body, the driving device is connected with pedals for the user to tread on, and the driving device is an electric monowheel of which the walking speed is controlled by an gravity sensing gyroscope. The intelligent schoolbag of the invention can keep books therein in order despite of bumping, thus articles in the schoolbag are neat. The schoolbag realizes easy access to books and can really reduce the burden to carry the schoolbag on the way to schools, and can better meet the needs of students.

A foldable scooter comprises a front wheel unit, a frame unit, a rear wheel unit, and a. seat unit. The frame unit comprises a connecting rod, a linking rod, and a stand, wherein the stand comprises a footboard, a chassis, and two side cover plates located on two sides of the footboard, the linking rod is located in a space between the footboard and the chassis, the connecting rod has an end fixedly connected with the front wheel unit and an end stretching into the middle of the footboard from front to be fixedly connected with the front end of the linking rod, and the rear end of the linking rod is fixedly connected with the rear wheel unit. The foldable scooter is simple in structure, convenient to operate, and capable of being folded to he stored and transported easily.

A saddle member is attached to at least one of an upper end portion of a first frame member and an upper end portion of a second frame member of a main frame mechanism and remains to be in a state of being attached to at least one of the upper end portion of the first frame member and the upper end portion of the second frame member in a folded mode, a seated driving mode, and a standing driving mode, with locking function of a third lock mechanism.

A saddle member is attached to at least one of an upper end portion of a first frame member and an upper end portion of a second frame member of a main frame mechanism and remains to be in a state of being attached to at least one of the upper end portion of the first frame member and the upper end portion of the second frame member in a folded mode, a seated driving mode, and a standing driving mode, with locking function of a third lock mechanism.

An exercise device with a crank housing supporting a pedal crank having a pair of opposing pedals that are pivotally mounted to the pedal crank. A first strut extends from the crank housing and is jointed to a second strut by a coupling that selectively allows the struts to rotate relative to each other so that the device may be folded into a planar configuration or extended for use. A cross-member is positioned at the end of each strut to form legs for supporting the pedal crank in an upright position. A tensioner is associated with the crank housing for selectively increasing and decreasing the force needed to turn the pedal crank. A telescoping arm may be used to interconnect the exercise device to a table or seat so that it can be folded and stored under the table or seat, and unstowed and unfolded for easy use.

Disclosed herein is a folding bicycle comprising a handlepost joint and two joints in the mainbeam forward of the seat tube, wherein the pins of the hinges in the two mainbeam joints (i) are located on opposite sides of the mainbeam when viewed in a top view, and (ii) when the bicycle in folded, place the front wheel parallel to rear wheel and the wheel axles inline on the same lateral axis or on parallel lateral axes, wherein the wheels roll in parallel track.