| US 7,598,465 B2 | ||
| Switch mechanism usable underwater | ||
| Tsuyoshi Hirabayashi, Hachioji (Japan); Katsuhisa Sakaguchi, Hachioji (Japan); and Ikko Mori, Hino (Japan) | ||
| Assigned to Olympus Imaging Corp., Tokyo (Japan) | ||
| Filed on Aug. 15, 2008, as Appl. No. 12/192,580. | ||
| Application 12/192580 is a division of application No. 11/281650, filed on Nov. 17, 2005, granted, now 7,426,338. | ||
| Claims priority of application No. 2004-344649 (JP), filed on Nov. 29, 2004; and application No. 2004-344651 (JP), filed on Nov. 29, 2004. | ||
| Prior Publication US 2008/0308396 A1, Dec. 18, 2008 | ||
| Int. Cl. H01H 13/06 (2006.01) | ||
| U.S. Cl. 200—302.2 [200/302.1] | 10 Claims |
| 1. A switch mechanism usable underwater comprising:
an exterior member enclosing an interior region and having first and second holes communicating the interior region to an
external region;
a pressing operation member providing a watertight seal for the first hole;
switch means in the interior region being turned on/off by a movement of the pressing operation member;
water pressure detecting means providing a watertight seal for the second hole of the exterior member; and
a lever member disposed to be rotatable around a rotation supporting portion disposed in the interior region, for applying
a detected force to the pressing operation member when the water pressure detecting means is pressed against the lever member
responsive to water pressure applied to the water pressure detecting means,
wherein, the detected force applied by the water pressure to the water pressure detecting means is set to be equal to or greater
than a resultant force of an external force being received by the pressing operation member from the water pressure as an
external pressure, and an internal force being received by the pressing operation member from the lever member as a force
in a direction opposite to an applying direction of the external pressure.
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