Patent ID: 7994670

Claim:
An apparatus for rotating a vehicle lamp comprising: a case body ( 2 ), a motor ( 1 ), a printed circuit board ( 4 ), and a gear reducing mechanism ( 3 ), wherein: an upper half case body ( 21 ) and a lower half case body ( 22 ) are provided in the case body ( 2 ); the gear reducing mechanism ( 3 ) and the printed circuit board ( 4 ) are accommodated between the upper half case body ( 21 ) and the lower half case body ( 22 ); the motor ( 1 ) has a motor shell ( 11 ) supported by a first bearing ( 14 ) and a motor cover ( 12 ) supported by a second bearing ( 15 ), said motor located outside of the case body ( 2 ), said motor comprising a stator ( 161 ), a rotor ( 162 ), the first bearing ( 14 ), and the second bearing ( 15 ); a revolving shaft ( 13 ) supported on the motor shell ( 11 ) and the motor cover ( 12 ) by the first bearing ( 14 ) and the second bearing ( 15 ) respectively, the motor ( 1 ) is fixed on the outside of the case body ( 2 ) by fixed ends ( 116 ) of the motor shell ( 11 ); and an end of the revolving shaft ( 13 ) enters into the case body ( 2 ) and connects with a driving gear ( 5 ) which engages with the gear reducing mechanism ( 3 ) having an output shaft ( 33 ) to actuate a vehicle lamp for changing the direction of irradiation of the vehicle lamp, wherein the gear reducing mechanism ( 3 ) comprises a first stage reduction gear ( 31 ), a second stage reduction gear ( 32 ) engaging with the first stage reduction gear ( 31 ), and a magnetic ring ( 35 ) arranged on the first stage reduction gear ( 31 ) or the second stage reduction gear ( 32 ), and at least one magnetic induction element ( 45 ) is arranged on the printed circuit board ( 4 ) corresponding to a position of the magnetic ring ( 35 ) to detect motion of the motor ( 1 ).