RESIN RETAINER, RESIN RETAINER MOLD, AND METHOD OF MANUFACTURING THE RESIN RETAINER

摘要

PROBLEM TO BE SOLVED: To prevent burrs from being produced at gate parts in a resin retainer, in which a plurality of columnar parts extending from the inner one end of an annular parts in the axial one direction are formed so that rolling elements can be disposed at equal intervals, and the gate parts formed by integrally injection-molding the annular parts and the columnar parts are exist on the inside of the columnar parts. SOLUTION: The present surfaces 46a of the gate parts 47 are tilted inwardly, toward the ends of the columnar parts 42. When the molded resin retainer 40 is extruded, the molded gate parts 47 can be sheared and separated in a direction that is parallel to the extruding direction of the retainer, and consequently, shearing strain can be prevented from being produced. COPYRIGHT: (C)2007,JPO&INPIT