PROBLEM TO BE SOLVED: To improve the cost reduction and durability of an in-wheel motor drive unit.SOLUTION: In an in-wheel motor drive unit 21, a speed reduction part B has a reduction gear input shaft 25 having eccentric parts 25a, 25b, and rotationally driven by a motor part A, curved line plates 26a, 26b which are rotatably held at external peripheries of the eccentric parts 25a, 25b, and a plurality of outer pins 27 which are engaged with external peripheral parts of the curved line plates 26a, 26b, and make the curved line plates 26a, 26b generate revolution motions, and an outer pin holding member 60 which holds the outer pins 27. In the in-wheel motor drive unit, since one end and the other end of a support pin 70 are supported by the outer pin holding member 60 and the casing 22, respectively, the outer pin holding member 60 is supported in a whirl-stop state with respect to the casing 22. The support pin 70 is formed of case hardening steel, and has a hard layer H which is formed by being applied with carburization quenching and tempering.
【課題】インホイールモータ駆動装置の低コスト化および耐久性向上を図る。【解決手段】減速部Bが、偏心部25a,25bを有し、モータ部Aにより回転駆動される減速機入力軸25と、偏心部25a,25bの外周に回転自在に保持された曲線板26a,26bと、曲線板26a,26bの外周部と係合して曲線板26a,26bに自転運動を生じさせる複数の外ピン27と、外ピン27を保持した外ピン保持部材60とを備え、外ピン保持部材60およびケーシング22で支持ピン70の一端および他端をそれぞれ支持することにより、外ピン保持部材60がケーシング22に対して回り止め状態で支持されたインホイールモータ駆動装置21において、支持ピン70が肌焼き鋼で形成され、浸炭焼入れ焼戻しが施されることにより形成された硬化層Hを有する。【選択図】図6
IN-WHEEL MOTOR DRIVE UNIT
インホイールモータ駆動装置
2015-09-28
Patent
Electronic Resource
Japanese