Motor assembly having ion implantation on sliding surfaces
AssigneesMatsushita Electric Industrial Co., Ltd., Nippon Steel Corporation
InventorsFumitoshi Yamashita, Katsuhiro Murano, Seiji Kurozumi, Kazunori Hayashi, Kanao Fukuda, Masato Inayoshi
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Abstract
A motor bearing device includes a bearing member, and a rotary shaft made of steel into which ions of metal element and carbon ions are implanted via a surface of the rotary shaft. The rotary shaft is slidable relative to the bearing member. The metal element is selected from the group consisting of metal elements in the IVa, Va, and VIa groups of the periodic system. Lubricant is provided between the bearing member and the rotary shaft. The surface of the rotary shaft opposes the bearing member.
Claims8
A motor bearing device comprising:
- a bearing member;
- a rotary shaft made of steel into which ions of metal element and carbon ions are implanted via a surface of the rotary shaft after the steel has been formed, the rotary shaft being slidable relative to the bearing member, the metal element being selected from the group consisting of metal elements in the IVa, Va, and VIa groups of the periodic system;
- and
- lubricant provided between the bearing member and the rotary shaft;
- wherein the surface of the rotary shaft opposes the bearing member.
A motor bearing device comprising:
- a bearing member made of steel into which ions of metal element and carbon ions are implanted via a surface of the bearing member after the steel has been formed, the metal element being selected from the group consisting of metal elements in the IVa, Va, and VIa groups of the periodic system;
- a rotary shaft being slidable relative to the bearing member;
- and
- lubricant provided between the bearing member and the rotary shaft;
- wherein the surface of the bearing member opposes the rotary shaft.
Dependencies are inferred from the claim text.