| 摘要 |
<p>In the rotary shaft device for industrial robots, a skirt (3c) is provided so as to extend downward from the outer surface of a member (3) rotatable around an axis υ, and a collar (7b) opposed to the inner surface of the skirt is projected from a fixed member (2), whereby these two members are set in opposition to each other with a narrow clearance left therebetween, to form a waterproof structure. Therefore, the entry of the dust and water droplets from the outside into the interior of the rotatable shaft can be prevented. This can prevent the corrosion, which is to be caused by the water droplets entering the rotatable shaft, of the inner parts such as a motor.</p> |
