Seiko Instruments Inc

Yuukou Hata

Kiyoshi Tanaka

Setsuo Shoji

Tarou Ueno

Ryuji Takahashi

Hiroshi Fujita

An optical fiber connector plug protecting cap is configured to be mounted to an optical fiber connector plug having a ferrule with an insertion hole into which an optical fiber is inserted and a holding member for holding the ferrule. The optical fiber connector plug protecting cap has a tubular cap member made of a resin material and configured to be fitted to a tip opening of the holding member to cover a tip portion of the ferrule in a non-contacting state, and a strap member having first and second end portions and comprised of an elastic body having a relatively greater flexibility than the cap member. The cap member has a connecting part having a locking hole for locking the first end portion of the strap member. The first end portion of the strap member has an engagement protrusion for engagement with the locking hole in a state in which the first end portion extends through the locking hole. The engagement protrusions of the strap member has a deformable portion configured to be deformed so that the engagement protrusions is locked to an edge portion of the connecting part of the cap member near the locking hole.

Optical fiber connector plug protecting cap

A collar member and a ferrule with improved dimensional precision, a simplified manufacturing process, and reduced cost. The collar member is provided at the rear end of a ferrule tubular body that has an optical fiber insertion hole to which an optical fiber is inserted. The collar member has a metal pipe member with an inner diameter sufficient to slidably accommodate the ferrule tubular body, a collar portion integrally molded of plastic on the outer periphery of the pipe member, the collar portion having a key groove on its outer peripheral surface for positioning with respect to an optical connector housing, a coated fiber holding portion integrally molded of plastic in the rear half of the pipe member with an inner diameter smaller than that of the pipe member, for receiving therein a coated optical fiber.

Growing community of inventors

Chiba, Japan

Yuukou Hata