CAGE AND ROLLERS

摘要

A cage of a cage and rollers includes engaging projecting portions that are provided on outer circumferential surfaces of rim portions, the engaging projecting portions being configured to be elastically deformed when the cage is inserted into a support hole of a rocker arm to thereby allow the cage to be contracted in diameter and to be elastically restored to be brought into engagement with the rocker arm after the cage is inserted in the support hole, to thereby position the cage properly in relation to an axial direction relative to the rocker arm. The cage and rollers can be assembled to the rocker arm while being positioned properly in relation to the axial direction so that the cage and rollers and the rocker arm can be formed into a rocker arm unit, and the cage and rollers can easily be assembled to the rocker arm.

主权项

1. A cage and rollers comprising:
a plurality of needles that are rolling elements; and a resin cage comprising a pair of annular rim portion that are provided so as to be spaced apart in an axial direction from each other and a plurality of pillar portions that are disposed at intervals in a circumferential direction between the rim portions, the pillar portions that lie adjacent to one another in the circumferential direction and the rim portions defining a plurality of pockets in which the plurality of needles are held to roll freely, and configured to be installed in an outer ring corresponding member having a support hole whose inner circumferential surface constitutes a raceway surface for the needles, the cage and rollers, wherein an engaging projecting portion is provided on an outer circumferential surface of at least one of the rim portions of the cage, the engaging projecting portion being configured to be elastically deformed so as to contract the cage in diameter when the cage is inserted into a support hole of the outer ring corresponding member and to be elastically restored after the cage is inserted in the support hole to be brought into engagement with the outer ring corresponding member to thereby position the cage properly in the axial direction relative to the outer ring corresponding member.