Electric assist bicycle

Abstract

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.

1 - 20 . (canceled) 
     
     
         21 . A bicycle frame, comprising:
 a hollow frame having a hollow main tube connected to a hollow chain stay,   wherein the hollow main tube is connectable to a hollow head tube,   wherein the head tube is connectable to handlebars and to a front fork,   wherein the chain stay is configured to receive a rear wheel,   wherein a continuous passage is defined from an opening from the head tube to an opening in the chain stay proximate to a rear wheel, and   wherein one or more cables are routable within the hollow frame through the continuous passage.   
     
     
         22 . A head tube assembly for a front fork and steering column of a bicycle, wherein the bicycle includes a hollow frame, the head tube assembly comprising:
 a head tube configured to receive the front fork and steering column of the bicycle; and,   a hollow headset compression nut that couples, via threads, with the head tube;   wherein an internal cable run is provided through the head tube, the hollow headset compression nut and the front fork, and   wherein the internal cable run includes a center steering axis that extends through pivot points of the front fork, thereby providing secure cable routing for cables originating outside of the steering column and ending at a non-pivoting side of the hollow frame.   
     
     
         23 . The head tube assembly of  claim 22 , further comprising:
 upper and lower sets of bearings received between the head tube and the front fork,   wherein the front fork includes upper and lower plates, and   wherein the hollow headset compression nut mates with the upper plate of the front fork and a matching upper plate of the head tube to provide a compression force between the upper plate of the front fork and the matching upper plate and the upper bearings therebetween, and between the lower plate of the front fork and a lower portion of the head tube and the lower bearings therebetween.   
     
     
         24 . The head tube assembly of  claim 22 , wherein the front fork includes left and right forks terminating in dropouts configured to receive a front wheel, and wherein the internal cable run extends from handlebars and into the hollow frame and into the left or right fork to the dropouts. 
     
     
         25 . The head tube assembly of  claim 22 , wherein the hollow headset compression nut has a hollow, cylindrical shape and has threads along an upper, outer portion, thereby acting as a threaded race for the head tube assembly, and including holes, accessible externally, to adjust a position of the hollow headset compression nut via the threads.