| 摘要 |
PROBLEM TO BE SOLVED: To enable a temperature sensitive type hydrodynamic fan-coupling device to favorably radiate heat to suppress a temperature rise of oil due to heat release to the utmost, eliminate the fear of reduction in viscosity of oil, and exert proper controlling function, following the temperature change in the outside surroundings for a long time. SOLUTION: In a fan-coupling device, slits with a fixed depth are cut deep in the tip side of a cooling fin 15 made of a flat plate projected from at least one side face of a housing in concentric circle manner, in circular arc manner, or radially, and the portions surrounded by slits are bent outside from side to side alternately around a central axis of the fin to form bent pieces 15-2. |
