Rotor punching sheet, rotor core with same and motor

A technology of rotor punching and rotor core, which is applied in the field of motors with the rotor core, can solve the problems of reduced motor efficiency, magnetic circuit leakage of the rotor core, etc., and achieves reduced magnetic flux leakage, stable structural strength, and improved performance effect

Active Publication Date: 2014-08-06
ANHUI WELLING AUTO PARTS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the existence of the outer magnetic bridge 2' and the inner magnetic bridge 3', t...

Method used

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  • Rotor punching sheet, rotor core with same and motor
  • Rotor punching sheet, rotor core with same and motor
  • Rotor punching sheet, rotor core with same and motor

Examples

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Embodiment Construction

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0040] In describing the present invention, it is to be understood that the terms "center", "thickness", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", " The orientation or positional relationship indicated by "circumferential direction" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation,...

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PUM

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Abstract

The invention discloses a rotor punching sheet, a rotor core with the same and a motor. The rotor punching sheet comprises a body. The body is provided with an inner hole, a plurality of installation grooves and an annular area surrounding the inner hole, wherein the installation grooves are distributed in the circumferential direction of the body, a pole part is defined between every two adjacent installation grooves, an outer magnetic bridge is defined between the outer end of each installation groove and the peripheral edge of the body, an inner magnetic bridge is defined among the every two adjacent installation grooves, the inner ends of the pole parts of the adjacent installation grooves and the annular area, at least one inner magnetic bridge and/or at least one outer magnetic bridge are/is disconnected, and the number of the disconnected inner magnetic bridges and the number of the disconnected outer magnetic bridges are both less than the number of poles of a rotor. According to the rotor punching sheet, magnetic flux leakage caused by the fact that rotating shafts assembled in the pole parts and the rotating shaft in the inner hole are directly communicated or caused by the fact that poles of different polarities are communicated is reduced as much as possible, and performance of the rotor is improved. Additionally, the rotor can be directly molded without injection molding conducted or other connecting parts adopted and is convenient and easy to manufacture.

Description

technical field [0001] The invention relates to the field of motor manufacturing, in particular to a rotor punch, a rotor iron core with the same, and a motor with the rotor iron core. Background technique [0002] In the prior art, there is an outer magnetic bridge 2' and an inner magnetic bridge 3' on the rotor core 1', such as Figure 7 As shown, the outer magnetic bridge 2' connects the parts of different polarities in the rotor core, and the inner magnetic bridge 3' makes the rotor core directly contact with the rotating shaft. However, due to the existence of the outer magnetic bridge 2' and the inner magnetic bridge 3', there is magnetic flux leakage in the rotor core, which further reduces the efficiency of the motor. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a rotor punching plate with reduced flux leakage and ...

Claims

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Application Information

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IPC IPC(8): H02K1/22
Inventor 王飞袁榜葛笑陈金涛
Owner ANHUI WELLING AUTO PARTS CO LTD
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