Apparatus for adjusting attitude of optical axes of head lamps on vehicle.

摘要

An apparatus (1) for properly adjusting an attitude of optical axes of head lamps on a vehicle includes a motor driven actuator (5) and a controlling section (2). The motor driven actuator (5) additionally includes a voltage dividing circuit comprising two resistors (5a,5b) and one of a plurality of contact positions (P1,P2,P3,P4) in the controlling section (2) is earthed directly whereby a resistance value of the controlling section becomes zero ohm when the angle of elevation assumed by the head lamps is maximized in an upward tilted state. A motor circuit (7,8) in the motor driven (5) includes in a power supply line an element for preventing an excessive intensity of electric current from being fed to a motor (8) when motor is held in a blocked state for some reason. Preferably, the element has positive temperature characteristics which suppress generation of heat when rotation of the motor (8) is blocked.