Treading type vehicle driving device

A treading type vehicle driving device comprising:

• a substrate including a retaining seat for mounting a treadle structure, and a bearing fixing seat mounting with a driving structure by a bearing;
• a retaining rod and a confining seat for being positioned and inserted by a gear assembly being installed between the retaining seat and the bearing fixing seat;
• a driving structure including a first transmission assembly and a second transmission assembly;
• the first transmission assembly including a follower shaft inserted to the bearing fixing seat of the substrate and a straight-cut gear (B1) and a straight-cut gear (B2) positioned on the follower shaft;
• the straight-cut gear (B2) being engaged to a straight-cut gear (A) of the gear assembly;
• the follower shaft being exactly positioned to a hub of a rear wheel for driving the rear wheel to rotate synchronously;
• the second transmission assembly including a driving shaft firmly secured to a fixing hole of the substrate and a straight-cut gear (D) engaged to the driving shaft;
• the straight-cut gear being engaged to the straight-cut gear of the first transmission assembly;
• a treadle structure including a slant-cut fan gear engaged to the retaining seat of the substrate, and a pedal fixed to the axial rod of the slant-cut fan gear;
• a tilt gear surface of the slant-cut fan gear being exactly engaged to one of a pair of slant-cut gears of the gear assembly for driving the gear assembly to move;
• the axial rod of the slant-cut fan gear protruding from a middle section of the base of the vehicle body;
• a protruding end of the axial rod being firmly secured with a pedal;
• the base is installed with a confining structure for confining the movement of the pedal;
• a position limiting plate for confining the driving structure to the substrate and the position limiting plate being matched to the first transmission assembly so that the rear wheel can drive the bearing;
• wherein when the pedal is treaded forwards and backwards, the vehicle moves forwards rapidly with less power.