Patent ID: 9630495
Date: 2017-04-25
CPC Classifications: B60K,F16D

Claim:
1. A power transmission control apparatus for use with a vehicle, the vehicle including an engine having a crankshaft, an alternator disposed on the crankshaft, and a power generator for supplying electricity to an external electric appliance, said power transmission control apparatus that controls transmission of a power from the crankshaft to the power generator, said power transmission control apparatus comprising: a power transmitter that is connected to the crankshaft and transmits the power from the crankshaft to the power generator, the power transmitter includes a transmission gear train; a switching unit that controls torque transmission from the crankshaft to the transmission gear train activation and deactivation of said transmission gear train of said power transmitter, said switching unit includes a clutch that is connected between the crankshaft and said transmission gear train of said power transmitter, an electric driving mechanism that drives said clutch, and an outer shell receiving said electric driving mechanism, said electric driving mechanism that includes a switch rod disposed rotatably in said outer shell and rotatable in said outer shell to drive said clutch, an electric motor spaced apart from said switch rod, and a gear assembly that includes a plurality of gears that transmit power from said electric motor to said switch rod that drives operation of said switch; a positioning unit that includes a projecting rod disposed at said outer shell in such a manner that said projecting rod is configured not to extend through said outer shell, and an elongate engaging portion disposed at said gear assembly and engaging said projecting rod, said engaging portion having opposite first and second engaging ends, said electric motor operable to rotate one of said gears of said gear assembly relative to said outer shell between a non-supplying position, where said projecting rod is engaged with said first engaging end and where the crankshaft cannot drive said transmission gear train of said power transmitter, and a supplying position, where said projecting rod is engaged with said second engaging end and where the crankshaft can drive said transmission gear train of said power transmitter; and an electric control unit that drives operation of said electric motor, said electric driving mechanism of said switching unit further includes a sensor disposed on said outer shell to detect a rotary position of said one of said gears of said gear assembly that emits a position signal to said electric control unit such that, when said sensor detects said one of said gears of said gear assembly is rotated to either said supplying position or said non-supplying position, rotation of said electric motor is stopped under control of said electric control unit.