Patent ID: 7740408
Filing Date: 2010-06-22
Classification: A61M,G02B

Abstract:
1. A coupling device for coupling optical fiber cables, comprising: a first fixing member comprised of a wall defining a cylindrical first hollow shape in which a first coupling terminal is disposed, the wall possessing an inner surface, the cylindrical first hollow shape possessing an open end portion at one end of the cylindrical first hollow shape, the cylindrical first hollow shape extending in an axial direction; a second fixing member comprised of a wall defining a cylindrical second hollow shape in which a second coupling terminal is disposed, the wall of the second fixing member possessing an outer surface; the second fixing member being slidably positionable inside the first fixing member, during which the outer surface of the wall of the second fixing member faces the inner surface of the wall of the first fixing member; the first fixing member comprising, at the open end portion, an inclined end surface having an inclination angle which extends toward the open end side in the axial direction of the hollow section, and a notched section extending in the axial direction of the cylindrical first hollow shape, the inclined end surface possessing a distal-most portion and a proximal-most portion, the notched section possessing an open end opening at the inclined end surface at the proximal-most portion; the outer surface of the wall of the second fixing member comprising a protruding portion extending in a longitudinal direction of extent of the second fixing member, and the inclined end surface possessing spiral shapes with respect to clockwise and counterclockwise circumferential directions, with the open end of the notched section as a center; the protruding section of the second fixing member contacting the inclined end surface of the first fixing member during insertion of the second fixing member into the first fixing member, and the protruding section sliding on the inclined end surface to be guided to the notched section in response to urging of the second fixing member further in an insertion direction.