Seikoh Giken Co., Ltd.

Norimasa Arai

Junji Taira

Masayuki Jibiki

Yohei Takaishi

Kouji Minami

Yasunari Kawasaki

Provided is an optical connector plug which, even when a predetermined load is applied to a plug frame and the plug frame is warped to a vertical upper side of a guide protrusion portion, prevents disengagement of an engagement head and an optical conductor adaptor. In an optical connector plug, an axial front end of an engagement head of an engagement latch is separated axially rearward from an axial rear end of a guide protrusion portion, and is close to the axial rear end of the guide protrusion portion. According to the optical connector plug, when a predetermined load is applied to a plug frame and the plug frame is warped to a vertical upper side of the guide protrusion portion, the axial front end of the engagement head is supported by the axial direction rear of the guide protrusion portion, so that the engagement head is prevented from moving vertically downward from the guide protrusion portion.

Optical connector plug and duplex optical connector plug

In a duplex optical connector plugA, when one of first and second optical connector assembliesis rotated around its axis in a clockwise direction or a counterclockwise direction, a rotational force of one of first and second gears is transmitted to the other of the gears by an intermediate gear. Thereby, interlockingly with the one of the optical connector assemblies, the other of the optical connector assembliesis rotated around its axis in the clockwise direction or the counterclockwise direction which is the same direction as the optical connector assemblies

Duplex optical connector plug and polarity reversal method of duplex optical connector plug

Ferrule polishing method of duplex optical connector plug

A plug attached to a terminal part of a cable includes a plug main body engaged to an adaptor, a slider and a tool. The tool includes an insertion portion having a tapered part and an engaging projection and an operation part. When the operation part is pulled with a second surface of the insertion portion inserted in a slot being disposed in parallel with an extraction direction, the engaging projection is engaged with an engaging portion of the slider, the slider is moved integrally with the tool and the plug main body is pulled out from the adaptor. When the operation part is pulled with an inclined surface of the tapered part being disposed in parallel with the extraction direction, the engaging projection is released from an engaging state with the engaging portion and the tool is detached from the slider.

Tool for plug, plug and cable with plug

A plug attached to a terminal part of a cable includes a plug main body to be connected to an adaptor, a latch, which is provided at the plug main body so as to be elastically displaceable from an outside of the plug main body toward an outer surface of the plug main body and which is engaged to the adaptor, and a slider including a cover part that is disposed at the outside of the latch. When the cover part is pushed down toward the outer surface or when the slider is moved in an extraction direction in which the plug main body is to be extracted from the adaptor, the latch is pushed down toward the outer surface and the engaging state of the latch is released.

Plug and cable with plug

In the optical connector plug, a length from the end face of the capillary of the ferrule to the front end surface of the flange in the axial direction is larger than a length from the front end of the forward portion of the first accommodation space of the plug frame to the rear end surface of the rearward portion of the plug frame in the axial direction, and in a state in which the front end surface of the flange is in contact with the rear end surface of the plug frame, the end face of the capillary is located in the second accommodation space.

Optical connector plug

In an optical connector plug, a front end of the shutter member can move between a shield position to shield a front end face of a ferrule in an extension state and a non-shield position to expose the front end face of the ferrule to the front side of a housing in a reduction state, when a plug frame and a shutter holding member move between the extension state and the reduction state. In the optical connector plug, in a course in which the shutter holding member is engaged with holding portions protruding in an axial direction of the optical connector adaptor and a grip member moves from the extension state to the reduction state, the front end of the shutter member is spaced to face front ends of the holding portions in the axial direction.

An optical connector plug incorporates a coil spring to bias a shutter holding member to the front side of an axial direction with respect to a plug frame and minimizes the entire length. The plug has a housing that includes a grip member and a shutter holding member that move relatively in the axial direction and the plug frame has an extension state in which the grip member moves to the rear side of the axial direction of the shutter holding member and a reduction state in which the grip member moves to the front side of the axial direction of the shutter holding member. A biasing member that biases the shutter holding member to the front side of the axial direction with respect to the plug frame and a biasing member receiving member that is connected to the plug frame are provided.

To provide an optical fiber cord with an optical connector of higher flexibility resistance, and the method for manufacturing the same are disclosed. An optical fiber cord with an optical connector, wherein said fiber cord, wherein said the optical connector comprising a stop ring having a through hole formed therein, though which said optical fiber is disposed; a crimping ring being disposed around said optical fiber to crimp said stop ring and said optical fiber cord; a ferrule being disposed at the tip end part of said optical fiber in said optical fiber cord; a spring being disposed around said optical fiber and between said ferrule and said stop ring; a plug frame being engaged with said stop ring; a grip being engaged with said plug frame; wherein said through hole of said stop ring having a stepwisely narrowing part in which a hole diameter is gradually reduced from said crimping part side to said ferrule side.

Optical connector stop ring, optical fiber cord with optical connector using the same and method for manufacturing optical fiber cord with optical connector

Disclosed are an optical connector plug and an optical connector, wherein the grip member includes an inner barrel and an outer barrel, which are freely slid with respect to each other, the grip member having a reduction state where the inner barrel is accommodated in the outer barrel and an extension state where the inner barrel projects forwardly, and the plug frame being engaged and supported such that the plug frame is movable by a predetermined amount with respect to the outer barrel, and, at a leading end inside the inner barrel are provided a shield plate supported at a free slant with respect to the inner barrel via a base end of the shield plate, disposed at a shield position at which a leading end of the ferrule is shielded in the extension state, and disposed at a non-shield position at which accommodation of the plug frame in the inner barrel is allowed, an action plate supported at a free slant inside the shield plate via a base end of the action plate, and inclined along with the shield plate, with a leading end of the action plate contacting with or engaged with the shield plate, and a biasing supporting means for biasing the shield plate for positioning the shield plate such that the shield plate is disposed at the shield position in the extension position.

Optical connector plug and optical connector

Provided are an optical connector plug and an optical connector, including: a shielding plate which is held in a plug frame holding hole of a plug housing in a manner that allows the shielding plate to tilt, the distal end of the shielding plate moving between a shielding position and an unshielding position; an operating plate which is held in a tiltable manner in the plug frame holding hole and adapted to tilt along with the shielding plate, the plug frame being capable of retracting, upon movement of the shielding plate to the shielding position, to a housing position at which no interference occurs with the shielding plate and the operating plate; and a biasing and holding member for biasing and positioning the shielding plate and the operating plate in a manner that brings the shielding plate to the shielding position as the plug frame moves to the housing position. When the plug frame is moved toward a front end of the plug housing, the operating plate is tilted by this movement of the plug frame, and the tilted operating plate pushes the shielding plate to the unshielding position, thus allowing the plug frame to move to an optical connection position with respect to the plug housing.

Growing community of inventors

Chiba, Japan

Norimasa Arai