next the electrical configuration of the steering lock device 35 will be described with reference to fig5 a control unit for the steering lock device 35 includes an ecl 40 that is a main control portion a battery 46 an ignition switch 44 the lock detection switch 45 and the actuator 30 the ecu 40 includes a cpu 41 that executes control processes an input interface i f 42 and an output interface i f 43 the input interface 42 receives signals from the ignition switch 44 and the lock detection switch 45 the output interface 43 outputs electric current to the actuator 30 next the operations of the steering lock device 35 and the ecu 40 for the steering lock device 35 will be described with reference to fig6 7 and 8 with regard to the ordinate axis in fig6 the upward arrow represents a retraction force fr for retracting the lock pin 26 from the lock hole 29 placing the lock pin 26 in the disengaged state and the downward arrow represents an advance force for advancing the lock pin 26 toward the lock hole 29 the abscissa axis represents a stroke of the lock pin 26 when the lock pin 26 is in the state shown in fig4 the stroke is zero the stroke in this state is indicated by an unlock.