Patent ID: 6712167
Filing Date: 2004-03-30
Classification: B60K,B62K

Abstract:
An electrical twist vehicle, comprising:a vehicle frame; a transmission unit having a driving portion extended above said vehicle frame and rotatably connected to said vehicle frame; a steering unit connected to said driving portion connected to said transmission unit; a pair of twisting wheels attached spacedly apart from each other and spacedly apart from said front portion of said twisting unit; such that when clockwise and anticlockwise movements are subsequently imparted to said steering unit, said transmission unit and therefore said twisting unit turn accordingly as a result, causing said electrical twist vehicle to move forwardly amid a series of twisting motion of said pair of twisting wheels; a pair of rear wheels rotatably attached on rear portion of said vehicle frame through a rear wheel axle; and a transmission system comprising: an electrical driving device which is supported by said vehicle frame for driving said rear wheels of said electrical twist vehicle to rotate; and a transmission device which comprises: a driving wheel operatively connected to said electrical driving device; a driven wheel coaxially connected to said rear wheel axle between said two rear wheels; a transmission belt for connecting said driving wheels with driven wheels; a biasing wheel moveably supported in said vehicle frame and arranged to bias against said transmission belt; a control member which is arranged to shift said electrical twist vehicle between a manually operated mode and an electrically operated mode, wherein by shifting said control member to said electrically operated mode, said biasing wheel is driven to bias against said transmission belt so as to increase tension of said transmission belt, such that said driving wheel is capable of driving said driven wheel and therefore said pair of rear wheels to rotate, and wherein by shifting said control member to said manually operated mode, said biasing wheel is moved away from said transmission belt so as to loosen said transmission belt, such that said driven wheel and therefore said pair of rear wheels are capable of rotating freely.