| 摘要 |
A handwheel ( 1 ) for stable, reversible engagement with an engagement end (Q) of a shaft (A) of a member to be operated. The handwheel ( 1 ) includes a stem ( 2 ) having a free end, a cavity ( 2 A) provided in the stem ( 2 ) for cooperating with the end (Q) of the shaft (A), an elastic ring ( 5 ), and a retaining washer ( 6 ). The cavity ( 2 A) has an open end proximate the free end of the stem ( 2 ). A first seat ( 3 ) accommodates the elastic ring ( 5 ). The first seat ( 3 ) is located proximate to the open end of the cavity ( 2 A). A second seat ( 4 ) accommodates the retaining washer ( 6 ). The second seat ( 4 ) is located proximate to the open end of the cavity ( 2 A).
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