CHAIN GUIDE AND CHAIN TRANSMISSION DEVICE

摘要

A chain guide includes a plurality of roller shafts provided on one side of a timing chain for torque transmission and spaced from each other in the longitudinal direction of a guide base facing the timing chain. The respective roller shafts rotatably support chain guiding rollers in the form of needle roller bearings. The rollers are cylindrical members having the same diameter over the entire axial direction such that the rollers are movable in the axial direction relative to the timing chain. The rollers are supported so as to be movable in the axial direction. When the rollers and the timing chain move relative to each other in the axial direction and the rollers move relative to the roller shafts in the axial direction, contact portions between the rollers and the roller shafts are displaced in the axial direction, so that radial loads are not locally applied.

主权项

1. A chain guide comprising:
a guide base configured to be arranged to extend along a portion of an outer periphery of a timing chain, the guide base being elongated in a direction in which the timing chain is moved; a plurality of roller shafts mounted in the guide base so as to be spaced from each other in a longitudinal direction of the guide base; and a plurality of chain guiding rollers rotatably supported on the respective roller shafts, each of the rollers comprising a roller bearing including an outer race and a plurality of roller elements received in the outer race: wherein the rollers are movable in a roller axial direction relative to both the timing chain and the roller shafts.