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Stator core for motor

A stator core and tooth technology, which is applied to magnetic circuits characterized by magnetic materials, magnetic circuit shape/style/structure, manufacturing motor generators, etc., can solve the problem of increased number of parts, cumbersome assembly and parts management, etc. problem, to achieve the effect of easy parts management

Inactive Publication Date: 2014-10-29
NHK SPRING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the plurality of laminated magnetic plates are separate from the stator core. From the viewpoint of forming a separate magnetic plate for each of the plurality of teeth, there is a significant increase in the number of parts, assembling, Parts management is extremely cumbersome

Method used

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  • Stator core for motor
  • Stator core for motor
  • Stator core for motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] figure 1 It is a schematic structural diagram showing an electric motor, figure 2 It is a perspective view of main parts showing lamination of a stator core, image 3 is the front view of the main part of the stator core, Figure 4 yes image 3 Sectional view of line IV-IV. In the following description, the circumferential direction and the radial direction mean the circumferential direction and the radial direction of the stator core. In addition, the circumferential direction is also the direction in which the rotor rotates.

[0026] Such as Figure 1 ~ Figure 4 As shown, the electric motor 1 includes a rotor 5 and a stator 7 . The rotor 5 is attached to a rotating shaft 9 . The stator 7 is arranged such that its inner peripheral surface faces the outer peripheral surface of the rotor 5, and constitutes a three-phase AC motor.

[0027] The rotor 5 has a structure in which a plurality of electromagnetic steel sheets are stacked in a ring shape by punching, and...

Embodiment 2

[0045] Figure 6 It relates to Example 2, and is a front view of main parts of the stator core. In addition, since the basic structure is the same as that of Embodiment 1, the same reference numerals are attached to the same constituent parts, and the same reference numerals are assigned to the corresponding constituent parts, and repeated descriptions are omitted.

[0046] In the stator core 13A of the stator 7A of the present embodiment, the non-magnetic portion M is formed on the coil side 21 a of the flange portion 21 . The non-magnetic portion M is a so-called retained austenite phase that is stable at high temperature in carbon steel and remains at room temperature due to rapid cooling. Formed by gas carburizing and quenching. In addition, a solid carburizing agent is applied at a target position so as to be formed by quenching in a non-oxidizing atmosphere. In addition, it may be formed by applying a solid carburizing agent to the target position or by high-frequency...

Embodiment 3

[0050] Figure 7 It is the front view of the stator core segment. In addition, the basic structure is the same as that of the first embodiment, and the same components are given the same reference numerals, and the corresponding components are given the same reference signs B, and redundant descriptions are omitted.

[0051] The stator core 13B of the stator 7B of the present embodiment is arranged in an annular shape so as to join the stator core segmented body 27 .

[0052] Each stator core segment 27 has a yoke configuration portion 29 and a tooth portion 31 , and has a structure in which a plurality of electromagnetic steel sheets are formed in a ring shape by, for example, punching. The yoke configuration portion 29 has a structure in which the annular yoke 15B is divided at predetermined intervals in the circumferential direction. A plurality of the stator core segmented bodies 27 are joined in the circumferential direction to form a ring shape, and are attached to the...

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Abstract

Provided is a stator core for a motor that makes it possible to minimize leakage of magnetic flux that passes through a flange portion to reach a coil, does not entail an increase in the number of components, and makes it possible to greatly facilitate assembly and component maintenance. The stator core (13) for a motor is provided with an annular yoke section (15) and teeth sections (17) that protrude inward in the radial direction on the inner periphery of the yoke section (15), and is characterized by: the provision to the tip of the teeth sections (17) that protrude inward in the radial direction of a flange portion (21) that faces a coil in the radial direction, said coil being formed so as to be wound around the teeth sections (17); and by having a compressive residual stress section (M) on the flange section (21).

Description

technical field [0001] The present invention relates to a stator core of a motor. Background technique [0002] In recent years, with the development of new technologies such as various electrical equipment, electric vehicles, hybrid vehicles, and robots, the performance required of motors and generators used in these machines and equipment has gradually increased. For example, higher torque, higher output, and space saving are required in industrial motors, electric vehicles, hybrid vehicles, and the like. [0003] In Patent Document 1, in order to respond to the above-mentioned requirements for higher torque, higher output, and space saving, it is proposed that the teeth of the stator core be provided with embedded stator coils that are concentratedly wound and accommodated in the slots. type permanent magnet synchronous rotating motor. In this technology, it is disclosed that the interval between the teeth increases due to concentrated winding, and as a result, the leak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/14H02K1/16H02K1/18
CPCH02K1/148H02K15/024H02K2213/03H02K1/165H02K1/146H02K15/022H02K1/02H02K1/14H02K1/16H02K1/18
Inventor 龟田洋平岩田一夫大仓健小野芳树
Owner NHK SPRING CO LTD
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