PROBLEM TO BE SOLVED: To provide a steering angle ratio variable device comprising: a speed reducing (speed increasing) device including an inscribed planetary gear mechanism and a constant velocity internal gear mechanism; and a hollow auxiliary shaft comprising a body part externally inserted with a rotor of an electric motor and an eccentric part rotatably inserted, via a rolling bearing, to an external tooth gear constituting an inscribed planetary gear mechanism, with reduced occurrence of noise and vibration as well as reduced transmission error of a steering angle ratio owing to improved condition of load transmission by a pin and pin hole constituting a constant velocity internal gear mechanism.SOLUTION: A constant velocity internal gear mechanism comprises: multiple pin holes 33 formed between an external tooth gear constituting an inscribed planetary gear mechanism and one end in an axial direction of a first shaft, and multiple pins 21 inserted respectively into the pin holes. A part 212 of the pin 21 to be inserted into the pin hole 33 has a columnar shape radially divided into two by a slit 213. The slit 213 is formed along a straight line connecting a pitch circle center O1 of multiple pins 21 and a center O21 of a circle constituting the pin 21.SELECTED DRAWING: Figure 5

    【課題】内接式遊星歯車機構および等速度内歯車機構からなる減速(増速)機と、電動モータのロータを外嵌する本体部と内接式遊星歯車機構を構成する外歯歯車に転がり軸受を介して回転自在に設置される偏芯部とを有する中空の補助軸と、を備えた舵角比可変装置の、等速度内歯車機構を構成するピンとピン穴とによる荷重伝達状態を良好にして、音や振動の発生および舵角比の伝達誤差を低減する。【解決手段】等速度内歯車機構は、内接式遊星歯車機構を構成する外歯歯車と第一軸の軸方向一端との間に形成された、複数のピン穴33と複数のピン穴にそれぞれ入る複数のピン21とからなる。ピン21のピン穴33に入る部分212は、円柱がスリット213により径方向で二分割された形状を有し、スリット213は、複数のピン21のピッチ円中心O1とピン21をなす円の中心O21とを結ぶ直線に沿って形成されている。【選択図】図5


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    Title :

    STEERING ANGLE RATIO VARIABLE DEVICE


    Additional title:

    舵角比可変装置


    Contributors:

    Publication date :

    2018-06-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / F16H Getriebe , GEARING



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