Abstract: This invention relates to a wheel spindle structure of a bicycle, in which a wheel spindle is inserted in a wheel hub so as to fix the wheel body. The wheel spindle, made of rigid titanium alloy, is cut to have a plurality of recessed grooves provided around the circumference extending along the axial direction. By providing the recessed grooves, rigidity of the wheel spindle is reduced so as to increase its elasticity. This results in high elastic force with slight elongation-contraction, whereby the wheel body can roll to move smoothly so as to remarkably increase the steering capability of the bicycle.

Abstract: This invention relates to a wheel spindle structure of bicycle, in which a wheel spindle is inserted in wheel hub so as to fix wheel body. The wheel spindle, made by rigid titanium alloy, is cut to have a plurality of elastic recessed grooves provided around circumference and extended along the axial direction. By providing the elastic recessed grooves, rigidity of the wheel spindle is reduced so as to increase its elasticity. This results in high elastic force with slight elongation-contraction, whereby the wheel body can roll to move smoothly so as to remarkably increase the steering capability of bicycle.