| 摘要 |
<p>An elastic member and a shaft body to which the elastic member is fixed are relatively rotatable, and means for keeping their positions after the relative rotation is provided. A grip structure is adjustable by relatively rotating the elastic member and the shaft body to different sizes of hands holding the grip structure and to preferred shapes. The preferred shapes can be maintained. A further effect of the grip structure is that its appropriate hardness can be selected and maintained. These can be achieved with a relatively simple component structure.</p> |
