| 摘要 |
PURPOSE: A ratchet clutch with bearing surfaces is provided to obtain improved ratchet clutch assemblies which are less expensive and lighter in weight than known assemblies, and yet are comparable in operation and performance. CONSTITUTION: A ratchet-type one-way clutch mechanism(300) includes an inner race member(302) with a plurality of notches(312), an outer member(304) with a plurality of pockets(310), a plurality of pawl members(306) positioned in the pockets for engagement with the notches, and spring biasing members(308) for biasing the pawl members toward engagement. The outer member is a stator member or an outer race member(304). Retainer members(314) retain the pawls axially in the pockets. Bearing surfaces on the inner race member, outer member and retainer member provide bearing support. Large radii on the pawl members and pawl pockets reduce wear and minimize the cost of secondary machining operations. The lower surfaces of the pawl members are curved and the curvature is larger than the curvature of the inner race member. Also, the inner race members is made of a plurality of thin disk members stacked and secured together, with various types of disk members being utilized in the stack.
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