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Dynamo-electric machine

A technology of rotating electrical machines and rotor cores, which is applied in the direction of motors, electric components, electric vehicles, etc., can solve the problem of bridge damage and bridge formation, and achieve the effect of preventing damage

Inactive Publication Date: 2018-04-17
EXEDY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, there is a problem that the bridging portion cannot be formed thinner in order to prevent the bridging portion from being damaged.

Method used

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  • Dynamo-electric machine
  • Dynamo-electric machine
  • Dynamo-electric machine

Examples

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Comparison scheme
Effect test

Deformed example 1

[0052] In the above-described embodiment, the holding member 23 is composed of two members, the first holding member 231 and the second holding member 232 , but the configuration of the holding member 23 is not limited to this. For example, the holding member 23 may be composed of one member, or may be composed of three or more members.

Deformed example 2

[0054] In the above embodiment, the second holding member 232 has the cooling flow path 2324, but the first holding member 231 may have the cooling flow path, or both the first holding member 231 and the second holding member 232 may have the cooling flow path. , it is also possible that the first holding member 231 and the second holding member 232 do not have a cooling flow path.

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PUM

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Abstract

This dynamo-electric machine (100) is provided with a stator (1), a rotor core (21), a permanent magnet (22) and a holding member (23). The rotor core (21) comprises at least a pair of housing holes extending in the axial direction and a bridge part that is arranged between the pair of housing holes in the radial direction. The permanent magnet (22) is contained in a housing hole. The holding member (23) is affixed to the rotor core (21) and holds the permanent magnet (22) within the housing hole.

Description

technical field [0001] This invention relates to rotating electric machines. Background technique [0002] Hybrid vehicles and electric vehicles have a rotary electric machine as a power source. It should be noted that IPM (Interior Permanent Magnet) motors in which permanent magnets are embedded in rotor cores are widely used in hybrid vehicles and electric vehicles as rotating electrical machines. The rotor core of this IPM motor has a plurality of pairs of housing holes extending in the axial direction (see Patent Document 1). The permanent magnets are inserted into the receiving holes. In order to suppress magnetic leakage, preferably, the bridging portion between the pair of receiving holes is formed as thin as possible. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Unexamined Patent Publication No. 2014-64471 Contents of the invention [0006] The technical problem to be solved by the invention [0007] When the c...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K1/22H02K1/32H02K9/19
CPCH02K1/22H02K1/27H02K1/32Y02T10/64H02K9/197
Inventor 松冈佳宏
Owner EXEDY CORP
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