To secure rigidity without accompanying size enlargement as much as possible, in a reduction gear mechanism of an electric actuator.SOLUTION: A reduction gear mechanism comprises a first gear 45, and a second gear 49 which is engaged with the first gear 45. A tooth-tip circle diameter of the second gear 49 is set larger than a tooth-tip circle diameter of the first gear 45. The first gear 45 is constituted of a base part 46 located inside a radial direction rather than its tooth bottom circle, and a tooth part 47 protruding to the outside of the radial direction from an external peripheral face 461 of the base part 46. A protrusion 462 protruding to a second housing 23 side rather than an end face 471 of the tooth part 47 at the second housing 23 side is formed at the end face of the base part 46 at the second housing 23 side.SELECTED DRAWING: Figure 5

    【課題】電動アクチュエータの減速歯車機構について、できるだけ大型化を伴わずに強度を確保する。【解決手段】減速歯車機構は、第1歯車45と、当該第1歯車45とかみ合う第2歯車49とを備えている。第2歯車49の歯先円直径は、第1歯車45の歯先円直径よりも大きくなっている。第1歯車45は、その歯底円よりも径方向内側の基部46と、基部46の外周面461から径方向外側へと突出する歯部47とで構成されている。また、基部46の第2ハウジング23側の端面には、歯部47の第2ハウジング23側の端面471よりも第2ハウジング23側へと突出した突出部462が設けられている。【選択図】図5


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    Title :

    ELECTRIC ACTUATOR


    Additional title:

    電動アクチュエータ


    Contributors:

    Publication date :

    2019-01-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16H Getriebe , GEARING / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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