To provide an actuator capable of applying lubricating oil by a specific quantity to a tooth part of gears, without impairing smoothness of mutual meshing of the respective gears of a gear train and the muffling effect between the respective gears.
A recessed part 36 for injecting the lubricating oil for smoothing meshing with a three stage gear 22, is formed in the rotational direction of the final stage gear 23 on an upper surface 23b of the final stage gear 23 fixed to an output shaft 26. An upper housing part 11 is formed with a raking-out part 37 extending toward the inside of the recessed part 36 and raking out the lubricating oil injected into the recessed part in response to rotation of the final stage gear 23 from the inside of the recessed part 36 and a guide part 38 guiding the lubricating oil raked out by the raking-out part to the gear part 23a of the final stage gear 23.
COPYRIGHT: (C)2007,JPO&INPIT
KAWABATA TOMOHIRO
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