公开(公告)号：US20130182986A1

公开(公告)日：2013-07-18

申请号：US13777380

申请日：2013-02-26

申请人： NSK Ltd.

发明人： Takanori TANAKA ,  Tomoharu SAITO ,  Yasushi TANOUE

IPC分类号： F16C19/14

CPC分类号： F16C19/14 ,  F16C19/163 ,  F16C19/182 ,  F16C19/505 ,  F16C19/548 ,  F16C33/585 ,  F16C2240/34 ,  F16C2240/46 ,  F16C2240/76 ,  F16C2361/61 ,  F16H48/42 ,  F16H2048/423

摘要： A rotation support device for a pinion shaft is configured such that, together with being able to sufficiently maintain axial rigidity of a rolling bearing on the side opposite from the pinion gear side, it is able to sufficiently reduce the dynamic torque during operation and the starting torque at the start of operation. Together with using a single-row angular contact ball bearing as the rolling bearing on the side opposite from the pinion gear side, the ratio of the radius of curvature Ro of the outer raceway and the diameter Bd of the balls (Ro/Bd) is regulated within the range 0.52

摘要翻译： 用于小齿轮轴的旋转支撑装置被构造成使得能够充分地保持滚动轴承在与小齿轮侧相反的一侧的轴向刚性的同时，能够充分地降低运转和启动时的动态转矩 开始运行时的扭矩。 与在小齿轮侧相反的一侧使用单列角接触球轴承作为滚动轴承，外滚道的曲率半径Ro与滚珠的直径Bd（Ro / Bd）之比为 在0.52

公开(公告)号：US20200300299A1

公开(公告)日：2020-09-24

申请号：US16086106

申请日：2018-04-10

申请人： NSK LTD.

发明人： Takanori TANAKA ,  Seigou URAKAMI ,  Seiji NAKAMURA

IPC分类号： F16C33/58 ,  F16C19/16

摘要： An outer ring includes an outer ring small-diameter part extending toward one axial side with respect to the outer ring raceway, a radial wall part extending from an axial end portion of the outer ring small-diameter part toward an inner diameter-side, and a folded-back part extending from a radially inner end portion of the radial wall part toward the other axial side. The folded-back part radially overlaps the inner ring small-diameter part with a radial gap therebetween. The radial gap of an inner diameter-side entry formed by an axial end of the folded-back part and the inner peripheral surface of the inner ring small-diameter part is smaller than the radial gap of an inner diameter-side exit formed by an axial end of the inner ring small-diameter part and an outer peripheral surface of the folded-back part.

公开(公告)号：US20130322802A1

公开(公告)日：2013-12-05

申请号：US13959088

申请日：2013-08-05

申请人： NSK LTD.

发明人： Takeshi MAEJIMA ,  Takanori TANAKA ,  Kinji YUKAWA ,  Youichi MATSUMOTO

IPC分类号： F16C33/38 ,  F16C33/66

CPC分类号： F16C33/38 ,  B60K6/26 ,  F16C33/416 ,  F16C33/418 ,  F16C33/6637 ,  F16C33/6681 ,  F16C2361/61 ,  F16C2361/65

摘要： A ball bearing includes an inner ring having a raceway surface, an outer ring having a raceway surface, a plurality of rolling elements rollably disposed between the raceway surface of the inner ring and the raceway surfaces of the outer ring, and a resin cage configured to retain the plurality of rolling elements between the inner ring and the outer ring. The cage is a crown type cage having an annular base portion and a plurality of pockets formed in an axial end face of the annular base portion, in which the pockets retain the rolling elements. An axial distance between an axial position of a center of gravity of the cage and a curvature center of a spherical or cylindrical inner surface of each of the pockets is 0.6 or more times a radius of curvature of the inner surface. A hybrid vehicle transmission has this ball bearing.

摘要翻译： 滚珠轴承包括具有滚道面的内圈，具有滚道面的外圈，可滚动地设置在内圈的滚道面与外圈的滚道面之间的多个滚动体，以及树脂保持架， 将多个滚动元件保持在内圈和外圈之间。 保持架是冠形保持架，其具有环形基部和形成在环形基部的轴向端面中的多个袋，其中袋保持滚动元件。 保持架的重心的轴向位置和每个凹部的球形或圆柱形内表面的曲率中心之间的轴向距离是内表面的曲率半径的0.6倍或更多倍。 混合动力车辆变速器具有该球轴承。