ACTUATOR AND VEHICLE LIGHTING DEVICE

摘要

A motor causes a shaft of an actuator to be displaced in an axis direction thereof, at least part of a circuit for driving the motor being mounted on a circuit board. A notch is formed in an end edge of the circuit board. A protrusion is formed inside a case. The protrusion is fitted into the notch, whereby the circuit board is independently supported inside the case.

主权项

1. An actuator comprising:
a case having an opening; a shaft accommodated inside the case and having a tip protruding towards an outside of the case through the opening; a motor accommodated inside the case; and a gear mechanism accommodated inside the case and configured to displace the shaft in an axis direction thereof by driving of the motor, wherein the gear mechanism includes a first gear mounted on a rotary shaft of the motor, a second annular gear mounted on the shaft and a third gear configured to transmit rotation of the first gear to the second gear, wherein the third gear includes a pair of shaft parts, wherein the case is formed therein with a bearing part configured to hold the pair of shaft parts, wherein the bearing part includes a pair of recesses into which the pair of shaft parts is inserted, and wherein each entry of the pair of recesses is formed to be narrower than a maximum diameter of the shaft part.