| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a drain member for a sleeve, sleeve and sleeve wall penetration structure capable of preventing water droplets from immersing at an inner wall side of a wall.SOLUTION: There are provided a cylinder cover 21 assembled to a sleeve main body fixed to a through-hole ranging from an outer wall to an inner wall and arranged at an outer wall side of the sleeve main body, a water shielding ring wall part 22 arranged at the end part of an inner wall side of the cylinder cover 21 and formed to project out of the outer periphery of the cylinder cover 21, and a water passage 23 arranged at the outer periphery of the cylinder cover 21 so as to scrape out the water droplet poured from the outer wall end part of the cylinder cover 21 onto the outer peripheral surface of the water shielding ring wall part 22 toward the outer wall side.</p> |
