| 摘要 |
PURPOSE:To improve cooling efficiency of a driving belt and/or a pulley, by forming in the pulley a circulating path for cooling fluid. CONSTITUTION:A fixed pulley half structure 2a of a driving pulley 2 is constituted by integrally fixing a fixed face 8 and a side cover 9 so as to provide a clearance G in the structure 2a. The structure 2a, interposing a separator 10 between said fixed face 8 and side cover 9, forms divided chambers G1, G2, and the both divided chambers G1, G2 communicate through a hole 11. And the structure 2a, connecting the divided chamber G1 with a cooling fluid supply pipe 12 while the divided chamber G2 air-tightly with a cooling fluid discharge port 16, constitutes a circulating path for cooling fluid. |
