Crank fastening device for a toddler's tricycle

摘要

A crank fastening device for a toddler's tricycle includes an axle, front struts, cranks and pedals. The axle comprises a pair of non-round center holes at respective ends. The crank has one end connected to a relative pedal and another end provided with a connecting section and covered with a lid. The lid comprises a threaded section. An axle seat is provided at the bottom of each front strut. The axle seat comprises an inner threaded hole corresponding to the threaded section of the lid. A recess is provided in the inner wall of the hole of the axle. The connecting section of the crank comprises a tenon corresponding to the recess of the hole of the axle.