| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a resin cage for a roller bearing capable of preventing the occurrence of damage, by reducing generating stress when applying a load, by restraining joining failure in a weld, with a simple constitution, even when injection molding is performed. <P>SOLUTION: This resin cage 2 for an annular roller bearing having a raceway surface for rolling a rolling element, incorporated into the roller bearing having a bearing ring oppositely arranged so as to be relatively rotatable and a plurality of rollers as the rolling element and rolling between the raceway surfaces in a freely rotatably holding state by arranging the respective rollers at a predetermined interval in the peripheral direction, includes a pair of annular ring parts 26 and 28 opposed at a predetermined interval and a plurality of column parts 24 for connecting these parts and forming a pocket 22 for inserting and holding the rollers by separating a space area between the annular ring parts in the peripheral direction. Among the pair of annular ring parts, at least any one annular ring part is molded in a roundish convex curved shape in peripheral edge parts 26s and 28s on its inner diameter side. <P>COPYRIGHT: (C)2010,JPO&INPIT |
