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Squirrel-cage rotor for electric motor and production method therefor

A squirrel-cage rotor and electric motor technology, which is applied in the manufacture of squirrel-cage rotors, electric components, and motor generators, can solve problems such as putty detachment, achieve stable efficiency, high reliability, and increase costs

Active Publication Date: 2011-04-27
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this balancing technique has the possibility that the putty will come off due to gravity

Method used

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  • Squirrel-cage rotor for electric motor and production method therefor
  • Squirrel-cage rotor for electric motor and production method therefor
  • Squirrel-cage rotor for electric motor and production method therefor

Examples

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Embodiment Construction

[0040] In the following detailed description, various specific details are set forth by way of example in order to provide a thorough understanding of the related teachings. It will be apparent, however, to one skilled in the art that such details may not be required to practice the teachings of the present invention. In other instances, known methods, procedures, sections and / or circuits have been described in relative heightened detail, in order to avoid unnecessarily obscuring aspects of the present invention.

[0041] The squirrel-cage rotors discussed here can be used in high performance electric motors using copper conductors, electric motors that require the use of conductor bars with a core portion thicker than the diameter of the core, and other electric motors.

[0042] exist figure 1 with figure 2 The manufacturing method according to the first example is described in . These figures show the end-facing surfaces of the end ring 2 and the conductor bar 4 seen fr...

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PUM

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Abstract

The invention provides a squirrel-cage rotor for an electric motor and a production method therefor. To provide a well balanced squirrel-cage rotor for an electric motor, quantities of braze used to bond various rotor components are different from each other so as to serve as balance weight in order to improve balance.

Description

[0001] related application [0002] This application claims the Japanese application number JP-2009-228339 submitted on September 30, 2009, the title of the invention "Squirrel-cage Rotor for an Electric Motor and Its Production Method (a squirrel-cage rotor for an electric motor and its production method) ", the entire contents of which are hereby incorporated by reference. technical field [0003] The subject of the invention relates to a squirrel-cage rotor for an electric motor with improved rotor balancing and a method of manufacture. Background technique [0004] For different kinds of electric rotary motors, various methods have been employed to improve motor efficiency. Regarding the rotor, improvement by changing the material of an electrical steel sheet used as a core member or a conductor bar and improvement in space factor of the conductor bar or shape change of the core are being considered. [0005] Figure 14A , 14B and 15 show prior art examples of rotors ...

Claims

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Application Information

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IPC IPC(8): H02K17/16H02K15/02
CPCH02K17/165H02K15/0012H02K15/165Y10T29/49009Y10T29/49012H02K17/20
Inventor 平松广道马场政一酒井亨安部健惠比根一秀
Owner HITACHI LTD