Nsk-Warner K.k.

Hiroki Segawa

Hirobumi Shirataki

Hirofumi Ogata

Hideki Oki

Hiroshi Shibata

Seiji Nishimura

Tomoharu Andou

Toshio Nagata

Kazuhiko Isobe

A one-way clutchincludes: an inner race; an outer race; a plurality of camsinterposed between an inner race outer peripheral surfaceand an outer race inner peripheral surfaceand serving to transfer a torque to between the inner raceand the outer race; a retaining mechanism retaining the plurality of cams; and a spring memberbiasing the plurality of camsto torque non-transfer positions, and the retaining mechanism includes a first retainerfixed to the outer raceand having a cylindrical retaining portionretaining the plurality of camsat a predetermined interval in a circumferential direction, and a second retainerdisposed on an inner diametrical side of the cylindrical retaining portion, retaining the plurality of camsin a swingable manner, and elastically deformable corresponding to the swings of the plurality of camswhen swinging in a torque transferring direction upon engagements of the plurality of camswith the inner race outer peripheral surfaceand the outer race inner peripheral surface

Unidirectional clutch

A method of manufacturing an outer retainer for a one-way clutch having an outward flange at one side edge thereof involves punching out a part of an annular portion having the outward flange by sliding a punch toward an axis of the outer retainer substantially in an axially inner direction from a retainer outer periphery-sided curve portion of the outward flange to a retainer inner periphery-sided curve portion thereof in a way that uses a die and the punch.

Method of manufacturing the outer retainer of a one way clutch that includes windows, by placing the outer retainer into a die and punching out slits in the outer retainer using a thin punch

An outer retainer includes a pair of annular portions facing each other in an axial direction and a plurality of column members connecting the annular portions. A plurality of window portions is formed by the annular portions and the column members, and an outward flange is provided at one side end thereof. The column member between window portions in predetermined positions is cut and the cut portion on the outward flange side is bent radially outward to be an elastic member. Paired cut-away portions are formed in predetermined portions of the outward flange with the elastic member disposed between the paired cut-away portions. In the thus-configured outer retainer, at least three window portions are disposed between the elastic member and the cut-away portion adjacent to the elastic member in the peripheral direction. Column members between paired cut-away portions are bent outward in the radial direction to be enlarged in diameter.

Outer retainer for one-way clutch

An outer retainer for a one-way clutch has a cylindrical portion and a flange portion extending radially outward from an axial end of the cylindrical portion. The flange portion has three or more arc-shaped major parts disposed circumferentially and arc-shaped minor parts, each adjacent two of the major parts being connected to one another through a minor part, the major and minor parts projecting radially outward to different extents, and the arc-shape of the major and minor parts constituting continuously the shape of the outer periphery of the flange portion.

Growing community of inventors

Fukuroi, Japan

Hiroki Segawa