| 摘要 |
<p>PURPOSE:To enable compacting of a clutch, by a method wherein control based on the number of revolutions of the input shaft of a pressure regulating valve, serving to open and close the discharge port of a pressure chamber, is prevented from taking place during a period in which the number of revolutions is increased to a specified value being the number of clutch-in revolutions and the number of clutch stole revolutions. CONSTITUTION:A piston 30, serving as a control device, is engaged with an engaging hole 29 formed in the boss part of a clutch cylinder 20. When the number of revolutions of an output shaft 7 is increased to higher than a given set value, a cam plate 16 is deviated to the rotary body 10 side on the output side against a spring 19 to press a pressure regulating valve 13. However, when the end surface of the cam plate 16 is brought into contact with the end surface of a working shaft 33 of the position 30, the press force of the cam plate yields to the control force of the piston 30 to prevent deviation of the cam plate to the rotary body 10 side on the output side. Further, when the number of revolutions of the output shaft 7 is increased, the press force of the cam plate 16 surpasses the control force of the piston 30 to gradually close the pressure regulating valve 13.</p> |
