| 摘要 |
A robot includes an arm, a wrist and a rotation support mechanism The rotation support mechanism has a shaft section provided in the wrist and an outer shape of which is a column shape; a bearing which is disposed on an outer periphery section of the shaft section and rotatably supports the shaft section around a center axis thereof; an annular-shaped ring member provided in the wrist and is concentrically disposed with the bearing by separating on the outer periphery side of the bearing; and an annular-shaped oil seal provided in the arm and slides with respect to the ring member by abutting the outer periphery section of the ring member and holding airtightness with the ring member according to the rotation of the center shaft of the shaft section. |
