VEHICULAR STEERING DEVICE

• Main Authors: ABE SATOSHI, KAMATANI YASUHIRO, TOMITA TAKEHITO, WADA YOSHINORI, TSUJI MASANORI
• Format: Patent
• Language: English; Japanese
• Published: 31.08.2017
• Subjects: LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; MOTOR VEHICLES; PERFORMING OPERATIONS; TRAILERS; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a vehicular steering device having a fail-safe function when an abnormality occurs in a motor interlocked with a shaft to which a steering force is applied by a driver.SOLUTION: A transmission mechanism 18 includes: a first reduction gear 21; a second reduction gear 22 having a reduction ratio higher than that of the first reduction gear 21; and a second clutch 23 for switching between a case in which a rotational force of a shaft motor 17 is transmitted to a first shaft 12 via the first reduction gear 21 and a case in which the rotational force is transmitted to the first shaft 12 via the second reduction gear 22. A control unit controls the second clutch 23 so as to selectively switch between the first reduction gear 21 and the second reduction gear 22 according to the state of the shaft motor 17 and a gear motor.SELECTED DRAWING: Figure 2 【課題】運転者により操舵力が加えられるシャフトと連動するモータに異常が生じた場合のフェールセーフ機能を有する車両用操舵装置を提供する。【解決手段】伝達機構１８は、第１減速機２１と、第１減速機２１よりも減速比が大きい第２減速機２２と、シャフト用モータ１７の回転力を第１減速機２１を経由して第１シャフト１２へ伝達する場合と、第２減速機２２を経由して第１シャフト１２へ伝達する場合とに切り替える第２クラッチ２３と、を含む。制御部は、シャフト用モータ１７とギヤ用モータの状態に応じて、第１減速機２１と第２減速機２２とを選択的に切り替えるよう第２クラッチ２３を制御する。【選択図】図２