| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the leakage of assembling fat and oil by providing a recess opened upward on a portion adjoining the opening side peripheral part of a base part in a cylinder body. SOLUTION: Nearly two tubular boss parts 13a and 13b communicated with two ports 3a and 3b and opened upward are provided on a cylinder body 2, and a recess 36 opened upward is formed on a portion adjoining the opening side peripheral parts of the boss parts 13a and 13b. An enclosing wall 33 is provided so as to enclose the boss parts 13a and 13b, and a wall forming the recess 36 covers two boss parts 13a and 13b, accordingly an outward appearance can be improved by this part. Forming the recess 36 can surely store overflowed assembling fat and oil in the recess 36 even excessive assembling fat and oil is overflowed in any direction at the time of assembly, thereby preventing leakage outside. Consequently assembly and productivity can be improved by the part.</p> |
