To reduce noise of a speed reducer.SOLUTION: A shaft support structure 101 of a speed reducer 100 including a worm shaft 2 coupled to an electric motor 7 and a worm wheel 1 engaged with the worm shaft 2 includes a first bearing 4 that supports a proximal end of the worm shaft 2 so that the worm shaft can freely rotate, a second bearing 11 that supports a distal end of the worm shaft 2 so that the worm shaft can freely rotate, and a coil spring 12 that biases the worm shaft 2 toward the worm wheel 1 via the second bearing 11. The first bearing 4 includes an inner ring 142, an outer ring 141, and plural balls 143 disposed between the inner ring 142 and the outer ring 141. The shaft support structure 101 further includes tilting means that tilts the outer ring with respect to the worm shaft 2.SELECTED DRAWING: Figure 4
【課題】減速機の騒音を低減すること。【解決手段】電動モータ7に連結されたウォーム軸2と、ウォーム軸2に噛み合うウォームホイール1とを備えた減速機100の軸支持構造101は、ウォーム軸2の基端側を回転自在に支持する第1軸受4と、ウォーム軸2の先端側を回転自在に支持する第2軸受11と、第2軸受11を介して、ウォーム軸2をウォームホイール1へ向けて付勢するコイルスプリング12と、を備え、第1軸受4は、内輪142と、外輪141と、内輪142と外輪141との間に配置される複数のボール143と、を有し、軸支持構造101は、ウォーム軸2に対して外輪を傾斜させる傾斜手段をさらに備える。【選択図】図4
SHAFT SUPPORT STRUCTURE OF SPEED REDUCER AND STEERING SYSTEM
減速機の軸支持構造及びステアリング装置
2021-09-30
Patent
Electronic Resource
Japanese
SHAFT SUPPORTING STRUCTURE OF SPEED REDUCER AND STEERING DEVICE
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