一种分体式电机定子冲片

Abstract

本实用新型提供了一种分体式电机定子冲片，属于电机技术领域。它解决了现有冲片散热欠佳的问题。本分体式电机定子冲片包括均呈圆环状的轭部冲片和齿部冲片，齿部冲片包括一圈齿体，相邻两齿体之间形成绕线槽，齿体卡设在轭部冲片内孔中，每个齿体上均轴向贯穿有内半圆孔，轭部冲片内壁上轴向贯穿有外半圆孔，内半圆孔和外半圆孔数量相同，位置对应的内半圆孔和外半圆孔之间形成一铆钉孔，每个齿体上还均轴向贯穿有通风槽，通风槽和与其相邻的绕线槽之间不连通；通风槽由大槽和呈“一”字形的直槽组成，直槽长度沿轭部冲片的径向延伸，直槽两端分别连通对应内半圆孔和对应大槽。本分体式电机定子冲片散热好。

Claims

1. A split-type motor stator lamination, comprising a yoke lamination (1) and a toothed lamination (2) both in the shape of annulus, wherein the toothed lamination (2) comprises a ring of teeth (2a), a winding groove (2c) is formed between two adjacent teeth (2a), the teeth (2a) are engaged in the inner hole of the yoke lamination (1), each tooth (2a) has an inner semi-circular hole (2d) axially penetrating through it, and an outer semi-circular hole (1a) axially penetrating through it on the inner wall of the yoke lamination (1), the number of inner semi-circular holes (2d) and outer semi-circular holes (1a) are the same, and a rivet hole (3) is formed between the inner semi-circular holes (2d) and the outer semi-circular holes (1a) at corresponding positions, characterized in that, Each tooth (2a) is also axially perforated by a ventilation groove (2f), and the ventilation groove (2f) and the adjacent winding groove (2c) are not connected; the ventilation groove (2f) is composed of a large groove (2f1) and a straight groove (2f2) in the shape of "I". The length of the straight groove (2f2) extends radially along the yoke punch (1), and the two ends of the straight groove (2f2) are respectively connected to the corresponding inner semi-circular hole (2d) and the corresponding large groove (2f1).

2. The split motor stator lamination of claim 1, wherein, The aforementioned large groove (2f1) has a trapezoidal structure, and the width of the large groove (2f1) gradually increases from the yoke punch (1) towards the tooth punch (2).

3. The split motor stator lamination of claim 1, wherein, A heat dissipation groove (1b) runs through the yoke punch (1) axially. The heat dissipation groove (1b) is evenly distributed along the circumference of the yoke punch (1), and the heat dissipation groove (1b) is not connected to the inner hole of the yoke punch (1).

4. The split motor stator lamination of claim 3, wherein, The heat dissipation groove (1b) is an arc shape coaxial with the yoke punch (1).

5. A split motor stator lamination according to claim 3 or 4, wherein, The number of heat dissipation slots (1b) and winding slots (2c) are the same and their positions correspond one-to-one.

6. The split motor stator lamination of claim 1, wherein, The tooth body (2a) includes a contact surface one for contacting the inner wall of the yoke punch (1). The inner wall of the yoke punch (1) has a contact surface two that matches the shape and size of the contact surface one. The number of contact surfaces one and two is the same, and the contact surface one is in close contact with the corresponding contact surface two. On the same tooth body (2a), the aforementioned inner semicircular hole (2d) is located in the middle of the contact surface one. Both sides of the contact surface one are inclined surfaces (2e). The two inclined surfaces (2e) are symmetrically arranged along the center of the inner semicircular hole (2d), and the distance between the two inclined surfaces (2e) gradually increases from the yoke punch (1) towards the tooth punch (2).

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