| 摘要 |
<p>PURPOSE:To provide a rubbing unit incorporating a shaft, which can rub a wide area at one time, and which can reduce the rubbing force. CONSTITUTION:Rubbing units 2 are connected to opposite ends of a shaft 1 having a straight shape in a plan view so that their rubbing faces extend in the same direction as that of the straight shape shaft 1 and the height of the shaft 1 measured from the rubbing surfaces and the distance between the rubbing units 2 are set, corresponding to parts of a hand which grips the shaft.</p> |
