Patent ID: 8474344

Claim:
A controllable composite clutch device having limited torque while in a released state comprises a clutch ( 110 or 210 ) capable of being controlled for performing engaging/releasing function and a limited torque device ( 120 or 220 ) installed between an input shaft ( 101 or 201 ) and an output shaft ( 102 ) or cylindrical output part ( 202 ), so that when the clutch ( 110 or 210 ) is controlled to be in an engaged state, rotary kinetic energy between the input shaft ( 101 or 201 ) and the output shaft ( 102 ) or cylindrical output part ( 202 ) is transferred through the clutch ( 110 or 210 ) and when the clutch ( 110 or 210 ) is controlled to be in a released state, the limited torque device ( 120 or 220 ) performs limited torque coupling, wherein continued input of the rotary kinetic energy between the input shaft ( 101 or 201 ) and the output shaft ( 102 ) or cylindrical output part ( 202 ) or a slip rotational speed differential generated due to over-torque is carried out by smaller torque, a limited torque of the limited torque device ( 120 or 220 ) being smaller than an engaging torque of the clutch ( 110 or 210 ) wherein: input shaft ( 101 or 201 ) is constituted by a shaft or rotary structure capable of inputting the rotary kinetic energy, and coupled to an input end of the axial clutch ( 110 or 210 ) and to an input end of the limited torque device ( 120 or 220 ); output shaft ( 102 ) or cylindrical output part ( 202 ) is constituted by a shaft or rotary structure capable of outputting the rotary kinetic energy, and respectively coupled to an output end of the axial clutch ( 110 or 210 ) and to an output end of the limited torque device ( 120 or 220 ); axial clutch ( 110 or 210 ) is controlled by manual force, centrifugal force, electric force, magnetic force, mechanical force, air pressure, and/or hydraulic force to transfer the rotary kinetic energy between the input shaft ( 101 or 201 ) and the output shaft ( 102 ) or cylindrical output part ( 202 ) when the axial clutch ( 110 or 210 ) is the engaged state, and to terminate the transmission of the rotary kinetic energy between the input shaft ( 101 or 201 ) and the output shaft ( 102 ) or cylindrical output part ( 202 ) when the axial clutch ( 110 or 210 ) is in the released state; limited torque device ( 120 or 220 ) is controlled by manual force, centrifugal force, electric force, magnetic force, mechanical force, air pressure, and/or hydraulic force to perform said limited torque coupling; and an inputting and an outputting function of the input shaft ( 101 or 201 ) and the output shaft ( 102 ) or cylindrical output part ( 202 ) can be switched to input the rotary kinetic energy through the output shaft ( 102 ) or cylindrical output part ( 202 ) and output the rotary kinetic energy from the input shaft ( 101 or 201 ).