| 摘要 |
<p>PURPOSE:To prevent the oil leak from the connection part between a cylinder body and a reservoir body which are formed from different material by forming the reservoir installation part of a cylinder body into bifurcated form and integrally forming the both so as to nip the reservoir installation part from inside and outside. CONSTITUTION:In a reservoir installation part 5 in cylindrical form, a wall part 6 which envelops the bottom part 3 of a cylinder body 1 from outside and forms a liquid passage A between the bottom part 3 and extends towards the cylinder body 1 is formed. Further, the reservoir installation part 5 is integrally formed with the cylinder body 1 in the direction opened perpendicularly to the direction of axis of the cylinder body 1. Further, the reservoir installation part 5 has a double-wall structure consisting of an outer wall 7 and an inner wall 8, and an unevenness 9 for preventing slip-off is formed onto the inner peripheral surface of the outer wall 7, and a projection 10 for preventing the slip-off is formed at the basic part of the outer surface of the inner wall 8 for keeping an interval between the outer wall 7. The installation part 13 for a reservoir body 12 is formed between the outer wall 7 and the inner wall 8 of the installation part 5 of the cylinder body 1 and fixed.</p> |
