SUSPENSION MEMBER FOR IN-WHEEL MOTOR DRIVE DEVICE

• Main Authors: TAMURA SHIRO, SUGIURA SAORI
• Format: Patent
• Language: English; Japanese
• Published: 07.10.2021
• 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; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLE SUSPENSION ARRANGEMENTS; VEHICLES IN GENERAL

To provide a structure that avoids the destruction of an in-wheel motor drive device even when an abnormal impact force sufficient to destroy an electric vehicle is applied.SOLUTION: A lower arm 48 extends in a vehicle width direction on the lower side of an in-wheel motor drive device 10, an outer end 48p in the vehicle width direction is connected to the in-wheel motor drive device 10 via a ball joint 49, and an inner end 48q in the vehicle width direction is connected to a sub-frame 30 on a vehicle body side around a swing axis extending in a vehicle longitudinal direction and can swing in a vertical direction. In the lower arm 48, regarding a reference straight line Ls passing through a ball center of the ball joint 49 in orthogonal to the swing axis, a bisector point Pd bisecting the reference straight line Ls into the ball joint 49 side and the sub-frame 30 side, and a reference plane that passes through the bisector point Pd and is orthogonal to the reference straight line Ls, the cross section of the lower arm 48 that intersects the reference plane is located on the opposite side (lower side) of the in-wheel motor drive device 10 when viewed from the bisector point Pd.SELECTED DRAWING: Figure 1 【課題】電動車両を破壊する程度の異常な衝撃力が付与されてもインホイールモータ駆動装置の破壊を回避する構造を提供する。【解決手段】ロアアーム４８はインホイールモータ駆動装置１０の下側で車幅方向に延び、車幅方向外側端４８ｐがボールジョイント４９を介してインホイールモータ駆動装置１０に連結され、車幅方向内側端４８ｑが車両前後方向に延びる揺動軸線回りに車体側のサブフレーム３０に連結され、上下方向に揺動可能である。ロアアーム４８は、揺動軸線に直交してボールジョイント４９のボール中心を通過する基準直線Ｌｓと、基準直線Ｌｓをボールジョイント４９側とサブフレーム３０側に２等分する等分点Ｐｄと、等分点Ｐｄを通り基準直線Ｌｓに直交する基準平面に関し、当該基準平面と交差するロアアーム４８の断面が、等分点Ｐｄからみてインホイールモータ駆動装置１０と反対側（下側）に位置する。【選択図】図１