| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology capable of suppressing air flow, which is caused by compression of bump rubber, from passing through the sealing part of an oil seal. <P>SOLUTION: A bump stopper cap 200 is provided between a cylinder 100 sealed with an oil seal 129 and a bump rubber 41 which is arranged at the circumference of a piston rod 20, for covering the circumference of the cylinder 100; and has a cylindrical side part 210, and a covering part 220 that is provided at one end of the side part 210 in a centerline direction to cover the opening at the other end. The side part 210 and the covering part 220 are molded integrally and continuously, and the thickness of the side part 210 is molded thinner than that of the covering part 220. The side part 210 has grooves 211 formed thereon that communicates a space which is enclosed by the side part 210, the covering part 220, and the cylinder 100, with a space that is outside the cylinder 100 and not enclosed by the side part 210 and the covering part 220. <P>COPYRIGHT: (C)2013,JPO&INPIT |
