| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a switch, a seal member, an annular member for sealing, and a manufacturing method of the seal member which improve the reliability. <P>SOLUTION: A seal member 40 includes: a base member 50 where a hole H4 is formed at a center part; a first annular member 51 where first protruding parts 61, respectively protruding from both surfaces of the base member 50 in the thickness direction along the hole H4 at the outer periphery side relative to the hole H4, are formed, the first annular member 51 being more flexible than the base member 50; a second annular member 52 where second protruding parts 62, respectively protruding from both the surfaces of the base member 50 in the thickness direction along an outer periphery of the base member 50 at the outer periphery side relative to the first protruding parts 61, are formed, the second annular member 52 being more flexible than the base member 50. <P>COPYRIGHT: (C)2013,JPO&INPIT |
