| 摘要 |
<p>Disclosed is a unidirectional clutch that can have improved silence and durability, and can decrease backlash without increasing the number of parts. A planet gear member (4), which has a planet gear (4a) that meshes with the inner gear (2b) of an outer member (2), is provided with locking teeth (4b), which are provided coaxially and integrally to the planet gear with a flange (4c) therebetween. An inner member (3) is provided with U-shaped walls (3b), which accept the locking teeth (4b), and the U-shaped walls are provided with an engager (5), which can engage a subset of the locking teeth. As a locked state is attained by means of the locking teeth, even if there is a restriction on the number of teeth on the planet gear, it is possible to set the pitch of the locking teeth to be as fine as desired, narrowing the gap before a locked state is reached during the rotation of the planet member, and thus reducing the backlash in the unidirectional clutch without increasing the number of parts.</p> |
