| 摘要 |
AN INPUT SUN WHEEL (9) AND AN OUTPUT PLANET WHEELS SUPPORT (13) CAN BE PUT INTO A DIRECT DRIVE STATE BY A CLUTCH (18) ENGAGED BY FLYWEIGHTS (29) AND A SPRING (34). IF THE ENGAGEMENT IS NOT SUFFICIENT FOR THE TORQUE TO BE TRANSMITTED, THE CROWN (8) SLOWS DOWN AND THEN IS IMMOBILIZED BY A FREE WHEEL (16), WHILST AN AXIAL THRUST (PAC) DUE TO THE HELICAL TEETH DISENGAGES THE CLUTCH (18). THE DEVICE THEN STARTS TO FUNCTION AS A REDUCTION GEAR.IN ORDER TO ACCELERATE THIS PROCESS, A CONTROL UNIT (152) DETECTS THE START OF SLIPPING OF THE CLUTCH (18) AND THEN ACTIVATES AN ACTUATOR (44, 46) ACTING IN SUCH A WAY AS TO DISENGAGE THE CLUTCH (18) BEFORE THE APPEARANCE OF GEARING FORCES. IN OTHER VERSIONS OF THE INVENTION, THE CONTROL UNIT CONTROLS SEQUENCING FORCES WHEN AT LEAST TWO CLUTCHES MUST BE ACTUATED IN A VIRTUALLY SIMULTANEOUS MANNER. USE FOR IMPROVING COMFORT AND REDUCING STRESSES AND WEAR. |
