PROBLEM TO BE SOLVED: To provide a compact shift actuator of an outboard engine which enables improvement of the transmission efficiency and transmission accuracy of power of an electric motor.SOLUTION: A shift actuator 2 includes: a body part 3 housed in a gear case of an outboard engine which rotationally drives a propeller shaft; and a shaft part which is provided in a gear case and fits in the body part 3. The body part 3 includes: an electric motor 31 which is disposed with a rotary shaft 31a extending in a vertical direction; and a gear mechanism 32 which rotates the shaft part in conjunction with the rotary shaft of the electric motor. The shaft part has: a screw shaft 41 which extends in parallel to the rotary shaft of the electric motor and rotates in conjunction with the rotary shaft of the electric motor through the gear mechanism; and a movable nut 42 which threadedly engages with the screw shaft and vertically moves in conjunction with rotation of the screw shaft. The movable nut is connected to a shift member which switches a gear of the propeller shaft.SELECTED DRAWING: Figure 3

    【課題】電動モータの動力の伝達効率や伝達精度の向上を図ることが可能でコンパクトな船外機のシフトアクチュエータを提供する。【解決手段】シフトアクチュエータ2は、プロペラシャフトを回転駆動する船外機のギアケースに収容される本体部3と、ギアケースに設けられて本体部3と嵌合する軸部とを具備している。本体部3は、回転軸31aを上下方向に伸長させて配置される電動モータ31と、軸部を電動モータの回転軸と連動回転させる歯車機構32とを有している。軸部31aは、電動モータの回転軸と平行に伸長し、歯車機構を介して電動モータの回転軸と連動回転するネジ軸41と、ネジ軸に螺合してネジ軸の回転に伴って上下動する可動ナット42とを有している。可動ナットは、プロペラシャフトのギアを切り替えるシフト部材に連結される。【選択図】図3


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    Title :

    SHIFT ACTUATOR OF OUTBOARD ENGINE


    Additional title:

    船外機のシフトアクチュエータ


    Contributors:

    Publication date :

    2016-11-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F16H Getriebe , GEARING



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