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公开(公告)号：US20170299024A1
公开(公告)日：2017-10-19
申请号：US15514285
申请日：2014-09-26
Applicant: NSK LTD.
Inventor： Hiroyasu YOSHIOKA , Eiji INOUE , Takashi IMANISHI , Hirotaka KISHIDA
CPC classification number: F16H15/50 , F16H13/08 , F16H25/186 , F16H55/56 , F16H57/08 , F16H63/065 , F16H63/3023 , F16H2057/087
Abstract: Projections protruding towards a cam plate and a disc are provided on both axial side surfaces of the retainer at a plurality of positions at which phases of the projections in the circumferential direction are offset from pockets. One axial direction surface of the cam plate and the disc are formed with concave portions at portions facing the respective projections. The concave portions have an axial depth deepest at a center portion thereof in the circumferential direction and becoming shallower towards both end portions thereof.
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公开(公告)号：US20170191552A1
公开(公告)日：2017-07-06
申请号：US15313167
申请日：2015-03-25
Applicant: NSK LTD.
Inventor： Hiroyasu YOSHIOKA , Yasuyuki MATSUDA , Kazutaka TANAKA , Takashi IMANISHI
Abstract: A sun roller of a friction roller-type transmission includes a movable sun roller element (23) capable of moving in an axial direction. Furthermore, the sun roller is provided with a loading cam mechanism which is formed along the circumferential direction of an input shaft (12), the loading cam mechanism having a first cam surface (75), a second cam surface (77) arranged facing the first cam surface (75) and secured to the input shaft (12), rolling elements (63) held between the first and second cam surfaces (75, 77), and an annular holding device (51), and the loading cam mechanism axially displacing the movable sun roller element (23). The holding device (51) has an inside-diameter-surface guiding part (81) for positioning the holding device relative to the input shaft by being fitted over the input shaft, the guiding part being provided to the inside diameter surface.
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