Stator punching sheet for improving resonance noise, stator and motor

The utility model discloses a stator punching sheet for improving resonance noise, a stator and a motor. The stator punching sheet comprises a yoke part, a pole shoe, and a winding part connecting theyoke part and the pole shoe. The bottom surface of the pole shoe is provided with an arc surface facing a motor air gap and two planes connected to the two ends of the arc surface respectively. The distance between the end, close to a winding groove opening, of the top face of the pole shoe and the extending face of the arc face is m, the maximum distance between the plane and the extending faceof the arc face is n, the set ratio k is equal to n/m, and k is larger than or equal to 0 and smaller than or equal to 1. The technical scheme of the utility model can effectively solve the problem that the stator punching sheet in the prior art is easy to generate resonance noise during working. 本实用新型公开了一种用于改善共振噪音的定子冲片、定子及电机，其中，定子冲片包括轭部、极靴以及连接轭部和极靴的绕线部，极靴的底面具有朝向电机气隙的圆弧面以及分别连接在圆弧面的两端的两个平面，极靴的顶面靠近绕线槽槽口的一端与圆弧面的延长面之间的距离为m，平面与