| 摘要 |
The present invention is configured so that roller bearings for guiding a timing chain while rolling are more effectively lubricated. Shaft engagement sections (25) are provided in the pair of opposing side plate sections (22) of guide bases (21) in a circular arc-like arrangement, the guide bases (21) being arranged in an opposing manner on one side of a timing chain (5) for transmitting torque. Each end of each roller shaft (31) is supported by each shaft engagement section (25). The roller shafts (31) respectively support, in a rotatable manner, roller bearings (41) for guiding the chain. Oil guide holes (26) penetrating through to the outer surfaces of the side plate sections are provided in wall surfaces of the shaft engagement sections (25) which the end surfaces of the roller shafts (31) face. Splashing oil carried up by the movement of the timing chain (5) and adhering to the outer surfaces of the side plate sections (22) is introduced into the roller bearings (41) from the oil guide holes (26). |
