To provide a shaft support structure which can inhibit interference between a rotor and a stator of a motor while inhibiting loss deterioration during rotation.SOLUTION: A shaft support structure includes: a center support 16 which partitions a motor chamber 14 for housing motors 2, 3 from a gear chamber 15 for housing a gear mechanism 9 in a case 12; a rotary shaft which extends to the motor chamber and the gear chamber while penetrating through the center support and in which a rotor shaft 3c of the motor is integrated with a gear shaft of the gear mechanism; first bearings 21 which are attached to both ends of the rotary shaft and support the rotary shaft on the case; and a second bearing 22 which is attached to the center support so as to form a radial gap with the rotary shaft.SELECTED DRAWING: Figure 1
【課題】回転時の損失悪化を抑制しつつ、モータのロータとステータとが干渉することを抑制する軸支持構造を提供する。【解決手段】軸支持構造は、ケース12の内部で、モータ2、3を収容するモータ室14とギヤ機構9を収容するギヤ室15とを仕切るセンタサポート16と、センタサポートを貫通した状態でモータ室とギヤ室とに延在するとともに、モータのロータシャフト3cがギヤ機構のギヤシャフトと一体化された回転軸と、回転軸の両端に取り付けられ、回転軸をケースに支持する第1軸受21と、回転軸との間に径方向の隙間を有するようにしてセンタサポートに取り付けられた第2軸受22とを備える。【選択図】図1
SHAFT SUPPORT STRUCTURE
軸支持構造
2022-01-25
Patent
Electronic Resource
Japanese