The utility model belongs to separation and reunion transmission field especially relates to a lever clutching mechanism, including act as go -between, fixed axle, spline housing and shifting block, the both ends of acting as go -between are passed respectively the fixed axle with the top of shifting block is located the fixed axle with be equipped with first elastic construction on the acting as go -between between the shifting block, the drive of acting as go -between when the shifting block rotates, stir the bottom of shifting block the spline housing removes. The beneficial effects of the utility model are that: removal that shifting block realized spline housing, simple structure, convenient operation are driven through acting as go -between to realize reseing through the elastic construction, improve driven accuracy.