Embodiments disclosed herein include an electric assist bicycle adapted for a both personal and public use, and subcomponents of the bicycle. The electric assist bicycle can include a hollow frame with one or more cables routed within the hollow frame. The hollow frame can be configured with an internal battery compartment. The electric assist bicycle can further include a modular electronic locking system.

Embodiments disclosed herein include an electric assist bicycle adapted for a both personal and public use, and subcomponents of the bicycle. The electric assist bicycle can include a hollow frame with one or more cables routed within the hollow frame. The hollow frame can be configured with an internal battery compartment. The electric assist bicycle can further include a modular electronic locking system.

A bicycle and frame is disclosed including a rear frame structure including a seat tube, a bottom bracket shell and a chainstay terminating in a rear wheel mount. A forward end of the chainstay, a lower end of the seat tube, and the bottom bracket shell are rigidly connected. A front frame structure includes a down tube rigidly connected to a forwardly disposed head tube and connected to the rear frame at a pivot proximate the bottom bracket shell facilitating pivoting of the front frame with respect to the rear frame in a common vertical plane. A frame lock when engaged substantially immobilizes the pivot to place the frame in a riding condition and when disengaged facilitates relative movement of the down tube and the seat tube towards each other about the pivot in the common vertical plane to place the frame in a collapsed condition such that the down tube lies alongside the seat tube.

A bicycle training aid device comprising a cantilevered handle member extending outwardly away from the bicycle and disposed laterally adjacent to the rear wheel using at least two clamping members. The clamping members may compress and extend to accommodate a range of different bicycles and to thereafter lock into place using at least two locking pins. The bicycle training aid device allows a second person, generally positioned to the rider's side or rear, to hold the bicycle steady by maneuvering the cantilevered handle member, thereby helping the person riding the bicycle maintain the proper balance needed for a smooth and continuous ride. In this way, the bicycle training aid also grants the second person a more effortless and accessible point of contact during use.

A bicycle training aid device comprising a cantilevered handle member extending outwardly away from the bicycle and disposed laterally adjacent to the rear wheel using at least two clamping members. The clamping members may compress and extend to accommodate a range of different bicycles and to thereafter lock into place using at least two locking pins. The bicycle training aid device allows a second person, generally positioned to the rider's side or rear, to hold the bicycle steady by maneuvering the cantilevered handle member, thereby helping the person riding the bicycle maintain the proper balance needed for a smooth and continuous ride. In this way, the bicycle training aid also grants the second person a more effortless and accessible point of contact during use.

A vehicle frame's coupler structure that connects separable frames for easy assembly and disassembly, at a low cost. Further, the couple structure can provide a vehicle that is easy to operate, without affecting the user when in use. The vehicle frame's coupler structure includes combining a Front-side Coupler Inner Face (8) with Rear-side Coupler Inner Face (9), and after making sure all components of (8) and (9) are in place (no protruding edges, etc.), and using Bolt (15) to fasten Part (6) with Part (7). The end result is the coupler system of the vehicle.

A drive apparatus for an electric bicycle with an electric motor, an energy storage unit for supplying the electric motor with electrical energy, and a carrier at which the energy storage unit is releasably held, wherein a first plug connector is provided at the energy storage unit and a second plug connector is provided at the carrier which plug connector is connected to the first plug connector to connect the energy storage unit to the electric motor. The first plug connector is mounted in a pivotable manner at the carrier about a first pivot axis.

A drive apparatus for an electric bicycle with an electric motor, an energy storage unit for supplying the electric motor with electrical energy, and a carrier at which the energy storage unit is releasably held, wherein a first plug connector is provided at the energy storage unit and a second plug connector is provided at the carrier which plug connector is connected to the first plug connector to connect the energy storage unit to the electric motor. The first plug connector is mounted in a pivotable manner at the carrier about a first pivot axis.

A modular electric bicycle with the classic diamond frame design which has been designed to accommodate a d-c rechargeable battery pack within its top, down and seat tube and conceal all electrical wiring inside the frame. The modular electric bicycle has been designed in order to ease the maintenance of electronic components and replace obsolete electronics just as easily as conventional bicycles can have mechanical components replaced.

A modular electric bicycle with the classic diamond frame design which has been designed to accommodate a d-c rechargeable battery pack within its top, down and seat tube and conceal all electrical wiring inside the frame. The modular electric bicycle has been designed in order to ease the maintenance of electronic components and replace obsolete electronics just as easily as conventional bicycles can have mechanical components replaced.