Brush, commutator, and commutator device
    2.
    发明授权
    Brush, commutator, and commutator device 失效
    刷子,换向器和换向器装置

    公开(公告)号:US07586230B2

    公开(公告)日:2009-09-08

    申请号:US11289642

    申请日:2005-11-30

    IPC分类号: H02K13/00

    摘要: In a commutator of a rotary electric machine, each of commutator segments has a low-resistive layer made of a low-resistive material and a high-resistive layer made of a high-resistive material having a specific resistance higher than that of the low-resistive material. The low-resistive material contains a carbonic material and a binder. The high-resistive material contains a carbonic material, a binder and an inorganic substance such as boron nitride. A mixing ratio of the inorganic material to the high-resistive material is more than 20 wt %. Alternatively, a brush, which makes contact with the commutator segments, can have the high-resistive layer and the low-resistive layer.

    摘要翻译: 在旋转电机的换向器中,每个换向器片段具有由低电阻材料制成的低电阻层和由电阻率高于低电阻材料的高电阻材料制成的高电阻层, 电阻材料。 低电阻材料含有碳材料和粘合剂。 高电阻材料含有碳材料,粘合剂和无机物质如氮化硼。 无机材料与高电阻材料的混合比大于20重量%。 或者,与换向器片段接触的电刷可以具有高电阻层和低电阻层。