Gosen Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Shu Niwa

A protective sleeve for a motor component includes a cylindrical-shaped braided cord of twenty-four or more strands using both a multifilament strand and a monofilament strand made of synthetic fibers having a melting point or a decomposition temperature at 280&#xb0; C. or more. The protective sleeve has oil resistance at high temperatures of 50% or more, the oil resistance at high temperatures being represented by the following formula: oil resistance at high temperatures (%)=(T/T)&#xd7;100. Here, T denotes a tensile strength of the protective sleeve before a treatment and T' denotes a tensile strength of the protective sleeve after the treatment. The tensile strength is measured in accordance with JIS L1013-8.5.1, and the treatment is carried out in such a manner that the entire protective sleeve is put into a closed container containing a mixture of 5 weight % of water and 95 weight % of automatic transmission fluid, followed by heating the container so that a temperature of the mixture is maintained at 150&#xb0; C. for 1,000 hours.

Protective sleeve for motor component

A binding cord for a motor for an electric vehicle includes a braided round cord of eight or more strands using a multifilament strand made of synthetic fibers having a melting point or a decomposition temperature at 280&#xb0; C. or more. The binding cord has oil resistance at high temperatures of 50% or more, the oil resistance at high temperatures being represented by the following formula: oil resistance at high temperatures (%)=(T'/T)&#xd7;100. Here, T denotes a tensile strength of the binding cord before treatment and T&#x2032; denotes a tensile strength of the binding cord after the treatment. The tensile strength is measured in accordance with JIS L1013-8.5.1, and the treatment is carried out in such a manner that the entire binding cord is put into a closed container containing a mixture of 5 weight % of water and 95 weight % of automatic transmission fluid, followed by heating the container so that a temperature of the mixture is maintained at 150&#xb0; C. for 1,000 hours.

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Osaka, Japan

Shu Niwa