The invention relates to a cast hub for an electric vehicle. The hub comprises a magnetic conductive ring and a rim, the magnetic conductive ring is arranged in the rim, the rim is a metal casting part, the rim comprises a tire mounting structural surface and a tire groove, a plurality of bosses which are circumferentially distributed and protrude outwards are arranged in the outer side of the circumferential surface of the bottom of the tire groove, the bosses extend in the axial direction and intersect with the inclined side face of the tire groove, and a valve core hole is formed in the tire groove. The cast hub for the electric vehicle has the advantages that the tire groove space is fully utilized; the bosses are arranged at the bottom of the tire groove and used to placing fixing screw holes; the structure enlarges the inner diameter of the magnetic conductive ring, thereby prolonging the arm of force of the electromagnetic force of a motor, greatly improving the output torque ofthe wheel hub motor, and improving the efficiency and output power of the motor, and at the same time, the boss distribution structure saves casting raw materials, reduces the weight of the whole machine, reduces the inertia of a rotor, and improves the response speed of the motor.
本发明涉及一种电动车用铸造轮毂,包括导磁环和轮辋,导磁环设于轮辋内部,轮辋为金属铸造件,轮辋包括装胎结构面和胎槽,胎槽底部圆周面外侧设有若干呈圆周分布的向外隆起的凸台,凸台沿轴向延伸并与胎槽斜侧面相交,胎槽斜侧面上设有气门芯孔。本发明的有益效果是:本发明的电动车用铸造轮毂充分利用了胎槽空间,在胎槽底部设凸台,用于放置固定螺丝孔,此结构限扩大了导磁环内径,从而延长电机电磁力的力臂,大大提高了轮毂电机的输出扭矩,提升了电机效率和输出功率,同时,凸台分布结构,节约了铸件原材料,减轻整机重量,降低转子惯量,提升电机响应速度。
Cast hub for electric vehicle
一种电动车用铸造轮毂
2020-07-28
Patent
Elektronische Ressource
Chinesisch
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