Patent ID: 8056915
Filing Date: 2011-11-15
Classification: B62K,B62M

Abstract:
1. A stepping scooter, comprising: a scooter body comprising: a head tube; a bridge rack extended from said head tube; an elongated main rack coaxially aligned with said bridge rack, having a free end portion, a first through hole and a second through hole spacedly and transversely formed through said free end portion in a perpendicular direction to an axis of said bridge rack; a bearing seat provided between said bridge rack and said elongated main rack; and an elongated tubular shaft coaxially aligned with said second through hole and mounted to said elongated main rack; a moving system comprising: a driving wheel; a driving shaft extended from said driving wheel, having a first engaged end portion, wherein said driving shaft is coaxially aligned with said tubular shaft in such a manner that said first engaged end portion is capable of penetrating through said tubular shaft by said second through hole to engage with said elongated main rack so that said driving wheel is rotatablcly rotatably connected to said elongated main rack; a driven wheel; a driven shaft extended from said driven wheel, having a second engaged end portion; a guiding wheel; a back unit comprising a first portion and a second portion extended from said first portion, said second portion having a hole coaxially aligned with said second through hole, wherein said first portion contacts with said free end portion of said main rack such that said second engaged end portion of said driven shaft is capable of penetrating through said hole to engage with said second portion in such a manner that said driven wheel is rotatably connected to said back unit so that when said driving wheel rotates, said driven wheel is capable of being driven at the same time; a driving system comprising: a driving arrangement comprising a pair of driving units, wherein each of said driving units comprises a positioning shaft mounted to said bridge rack, a pedal arm, having an arm end pivotally connected to said positioning shaft; a pedal attached to said pedal arm; a connecting arm downwardly extended from said pedal arm; and a rotatable arm, having a first rotatable end pivotally connected with said connecting arm, and a second rotatable end; a first shaft unit provided at a left side of said scooter body comprising a first core member pivotally connected with said bearing seat; a first chain wheel coaxially aligned with said first core member; and a first shaft connector coaxially positioned at said first chain wheel and engaged with said second rotatable end of said rotatable arm in such a manner that when a human power is applied on said pedal, said first chain wheel is capable of rotating correspondingly; and a second shaft unit provided at a right side of said scooter body comprising a second core member pivotally connected with said bearing seat; a crank mounted to said second core member; and a second shaft connector aligned with said second core member and engaged with said second rotatable end of said rotatable arm, wherein said second core member is opposite to said second shaft connector in such a manner that when a human power is applied on said pedal, said crank is capable of rotating correspondingly; and a transmission and speeding up arrangement, comprising a second chain wheel coaxially aligned with said first through hole at said left side of said scooter body, a cogged flywheel, having a characteristic of forward-rotating and reverse idling, comprising a flywheel shaft rotatablv connected to said second chain wheel through said first through hole at said right side of said scooter body to mount on said elongated main rack, a gear wheel engaged with said cogged flywheel, wherein said gear wheel is rotatablv connected with said first engaged end portion of said driving shaft so as to mount said driving shaft to said elongated main rack, and an endless transmission chain linked between said first chain wheel and said second chain wheel, wherein a diameter of said first chain wheel is larger than that of said second chain wheel in such a manner that when a human power is applied on said driving system, the human power is converted into a rotation power such that the rotation power is increased by said cogged flywheel and said gear wheel according to a principle of machinery; and a steering lever comprising: a steering handle for supporting a rider; and a front fork provided at a bottom of said steering handle and rotatablv connected with said guiding wheel.