IN-WHEEL MOTOR DRIVE UNIT

• Main Authors: UOZUMI TOMOHISA, YUKISHIMA MAKOTO, SUZUKI MINORU
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2015
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLETECHNOLOGY; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To reduce a cost of an in-wheel motor drive unit, and to improve the durability of the in-wheel motor drive unit.SOLUTION: In an in-wheel motor drive unit 21 which is composed of a cycloid reduction mechanism having a reduction gear input shaft 25 in which a reduction part B has eccentric parts 25a, 25b, and curved plates 26a, 26b which are rotatably held to external peripheries of the eccentric parts 25a, 25b of the reduction gear input shaft 25, and perform rotation motions, the curved plates 26a, 26b are formed of case hardening steel, and have hardened layers H which are 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を有する減速機入力軸２５と、減速機入力軸２５の偏心部２５ａ，２５ｂの外周に回転自在に保持されて公転運動を行う曲線板２６ａ，２６ｂとを有するサイクロイド減速機構からなるインホイールモータ駆動装置２１において、曲線板２６ａ，２６ｂ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５