ELECTRIC POWER STEERING DEVICE
PROBLEM TO BE SOLVED: To provide an electric power steering device which can suppress the generation of noise due to rattling, because a bearing remaining clearance of a bearing press-in a shaft hole of a speed-reducer housing is not enlarged.SOLUTION: A worm wheel housing 35 storing a worm wheel 33...
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Main Authors | , , , , |
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Format | Patent |
Language | English Japanese |
Published |
30.06.2016
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Subjects | |
Online Access | Get full text |
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Summary: | PROBLEM TO BE SOLVED: To provide an electric power steering device which can suppress the generation of noise due to rattling, because a bearing remaining clearance of a bearing press-in a shaft hole of a speed-reducer housing is not enlarged.SOLUTION: A worm wheel housing 35 storing a worm wheel 33 of a speed-reducer housing 16 has a bottom wall on which a supporting portion 18 supporting a tilt hinge shaft 19 is projected out. The bottom wall is provided with a thickness-stealing recessed portion 35d forming a hollow in the supporting portion 18, and a shaft hole 35f in which a bearing 22 rotatably supporting a steering shaft is pressed. The thickness-stealing recessed portion is divided into 2 pieces by a partitioning wall 35e. The divided thickness-stealing recessed portions 35d are disposed so as to sandwich a diametrical line of the shaft hole 35f orthogonal to an axis P of the tilt hinge shaft 19. The bearing 22 is positioned so as to make a center line H in its thickness direction pass through the partitioning wall 35e.SELECTED DRAWING: Figure 2
【課題】減速機ハウジングの軸孔に圧入される軸受のベアリング残留隙間を大きくすることがないためガタによる異音の発生を抑制できる電動パワーステアリング装置を提供する。【解決手段】減速機ハウジング16のウォームホイール33を収納するウォームホイールハウジング35には、チルトヒンジ軸19を支持する支持部18が突出された底壁を有する。底壁には、支持部18に中空を形成する肉盗み凹部35dと、ステアリングシャフトを回転可能に支持する軸受22が圧入された軸孔35fを備えている。肉盗み凹部は、隔壁35eにて2分割されている。分割された肉盗み凹部35dは、チルトヒンジ軸19の軸線Pと直交する軸孔35fの径方向線を挟むようにして配置されている。軸受22は、その厚み方向における中心線Hが隔壁35e内を通過して配置されている。【選択図】図2 |
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Bibliography: | Application Number: JP20140258016 |