Operation lever for steering apparatus

An operation lever for a steering apparatus, comprising:

• a lever main body having a tapered insertion portion which has a quadrangular cross-sectional shape and sawtooth-like locking portions on both sides in an up-down direction and in which a size in the up-down direction decreases gradually toward a distal end;
• and
• an operation knob having a tapered insertion hole which has a quadrangular cross-sectional shape and in which a size in the up-down direction decreases gradually from an opening toward a deep end wall surface, wherein
• the insertion hole is constituted by tapered reference surfaces facing each other in the up-down direction and inner side surfaces facing each other in a left-right direction,
• the tapered insertion portion of the lever main body and the tapered insertion hole of the operation knob are formed to correspond to each other, grooves are formed from the opening and along the deep end wall surface so as to protrude outward from the respective tapered reference surfaces in corner locations of the two tapered reference surfaces and the inner side surfaces in the insertion hole of the operation knob,
• the insertion portion is inserted into the insertion hole, and the locking portions are configured to bite in outward through the respective tapered reference surfaces.