To provide a hub unit with steering function and steering system, capable of achieving high fuel economy and running stability by giving steering of a very small angle to a steering wheel or non-steering wheel in addition to ordinary steering of the steering wheel and capable of well maintaining the lubricity of a slide screw.SOLUTION: A hub unit 1 with steering function includes: a hub unit body 2 with a hub bearing 15; a unit support member 3 for supporting the hub unit body 2 to be rotatable around a steering axial center extending in the vertical direction; and a steering actuator 5 for driving the rotation of the hub unit body 2. The steering actuator 5 includes a direct-acting mechanism 25 for converting a rotation output of a motor (a rotation driving source) 26 into a linear movement. The direct-acting mechanism 25 includes a sliding screw type feed screw mechanism including a nut part 35 and a screw shaft 36. At the nut part 35, there is provided a grease reservoir for gathering grease, and between the nut part 35 and the screw shaft 36, there is formed a sealing member for sealing grease.SELECTED DRAWING: Figure 2
【課題】操舵輪の通常の操舵に加えて、操舵輪または非操舵輪に微小な角度の操舵が行えて、燃費の改善および走行安定性の向上等が図れると共に、滑りねじの潤滑性を良好に維持することができる操舵機能付ハブユニットおよび操舵システムを提供する。【解決手段】操舵機能付ハブユニット1は、ハブベアリング15を有するハブユニット本体2と、ハブユニット本体2を上下方向に延びる転舵軸心回りに回転自在に支持するユニット支持部材3と、ハブユニット本体2を回転駆動させる操舵用アクチュエータ5とを備える。操舵用アクチュエータ5は、モータ(回転駆動原)26の回転出力を直進運動に変換する直動機構25を有する。直動機構25は、ナット部35およびねじ軸36を含む滑りねじ式の送りねじ機構を有し、ナット部35に、グリースを溜めるグリース溜まりが設けられると共に、ナット部35とねじ軸36との間にグリースを密封する密封部材が配置された。【選択図】図2
HUB UNIT WITH STEERING FUNCTION AND STEERING SYSTEM
操舵機能付ハブユニットおよび操舵システム
2020-06-25
Patent
Elektronische Ressource
Japanisch
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