Insulated wire, coil using the same, and motor

A technology of insulated wires and insulating layers, applied in the direction of insulated cables, insulated conductors, organic insulators, etc.

Active Publication Date: 2010-07-21
SUMITOMO ELECTRIC WINTEC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it cannot be judged whether it can be used as an insulated wire by simply evaluating the adhesion

Method used

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  • Insulated wire, coil using the same, and motor
  • Insulated wire, coil using the same, and motor
  • Insulated wire, coil using the same, and motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0067] The preferred embodiment of the invention is illustrated by way of example. The examples do not limit the scope of the present invention.

[0068] [measurement evaluation method]

[0069] First, the evaluation method employed in this example will be described.

[0070] (1) Flexibility

[0071] The insulated wire was stretched by 30% relative to the initial length, and after stretching, it was tested according to JIS C30037.1.1 flexibility test standard. Specifically, the wire was wound 10 times around a round bar having the diameter of the insulated wire itself so that the wires were in contact with each other, and the presence or absence of cracks was observed and the number of cracks was counted.

[0072] (2) Dielectric breakdown voltage (kV)

[0073] Measurement was performed in accordance with JIS C3003 10.2.2. Specifically, a 25 cm electric wire was dipped in a solution of glycerin / saturated NaCl water=85 / 15. The impregnated copper plate is used as the counter ...

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Abstract

An insulated wire includes a conductor, a foundation layer covering the conductor, and an insulated layer formed on the foundation layer. The foundation layer is configured with a hardening body of a resin composition including a heat curing resin having an epoxy resin, and a reactive functional group. The heat curing resin includes 1 to 10 parts by mass with respect to 100 parts by mass of the epoxy resin. Further, the heat curing resin preferably includes 5 to 30 parts by moss of blocked isocyanate with respect to 100 parts by mass of the epoxy resin.

Description

technical field [0001] The present invention relates to an insulated electric wire, a coil and a motor using the insulated electric wire, and they are suitable for use in electric appliances such as air conditioners and refrigerators, compressors, etc. that use refrigerants. Background technique [0002] Insulated wires are used in various forms depending on the type of electrical appliances. Therefore, the insulating coating needs to have excellent adhesiveness in order to ensure insulating properties in various specifications. For example, it is required that the insulating coating will not peel off even if it is subjected to mechanical and physical stimuli such as abrasion or scratching. [0003] As an insulating coating having excellent adhesion, insulation, and mechanical strength, for example, Japanese Patent Application Laid-Open No. 2007-287399 (Patent Document 1) proposes an insulated wire having a two-layer insulation coating. According to the structure disclosed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/02C08G59/62H02K3/30
CPCH01B3/40C08L63/00
Inventor 吉田健吾
Owner SUMITOMO ELECTRIC WINTEC INC
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