PROBLEM TO BE SOLVED: To provide a structure of an angular ball bearing which can suppress a change of contact angle of a ball resulting from an axial load which is applied in a use.SOLUTION: A cross section shape of an outer ring raceway 16b is formed on a portion which corresponds to an apex of a triangle whose curvature radius is small out of a triangular distorted regular circle, and a cross section shape of an inner ring raceway 21b is formed of a portion existing in a position which is displaced at 180° in a phase with respect to a portion corresponding to the apex out of the distorted regular circle, and corresponds to a side of a triangle whose curvature radius is large. The portion corresponding to the apex and the portion corresponding to the side are arranged in a positional relationship in which the portions are made to approximate each other rather than a state that the portions are located on a single distorted regular circle.SELECTED DRAWING: Figure 2
【課題】使用時に加わるアキシアル荷重に起因する、玉の接触角の変化を抑制できる、アンギュラ玉軸受の構造を実現する。【解決手段】外輪軌道16bの断面形状を、三角形状の等径歪円のうちで曲率半径の小さい三角形の頂点に相当する部分により構成すると共に、内輪軌道21bの断面形状を、前記等径歪円のうちで、前記頂点に相当する部分に対し位相が180度ずれた位置に存在する、曲率半径の大きい三角形の辺に相当する部分により構成する。且つ、前記頂点に相当する部分と前記辺に相当する部分とを、単一の等径歪円上に位置する状態よりも、互いに近接させた位置関係に配置する。【選択図】図2
ANGULAR BALL BEARING
アンギュラ玉軸受
2017-05-25
Patent
Elektronische Ressource
Japanisch
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