| 摘要 |
PURPOSE:To improve durability of a directly coupled clutch, by using a coil spring, having a sectional shape with a surface brought into contact with both input and output discs being a plane, for the damper spring of the directly coupled clutch concurrently provided in a hydraulic power transmission. CONSTITUTION:A hydraulic power transmission concurrently provides a directly coupled clutch, and its damper 6, comprising a damper input disc and a damper output disc 25, provides between the both discs a coil spring 7 resiliently connecting the both discs. Said coil spring 7 has a sectional shape such that a contact surface with the damper input disc and a damper output disc 25 is a plane. Consequently, the coil spring, increasing an area of the contact surface and decreasing a depth of a wearing flaw, enables durability of the directly coupled clutch to be improved. |
