| 摘要 |
PROBLEM TO BE SOLVED: To provide a fan boss capable of reducing weight and cost, and capable of improving adhesive reliability of a vibration control rubber layer. SOLUTION: An inner cylinder member 2 is constituted in a two-layer structure of a metallic inside cylindrical body 2a and a polyamide resin outside cylindrical body 2b, and a coaxially arranged substantially cylindrical fan boss body 1 composed of a polyamide resin and the outside cylindrical body 2b of an inner cylinder member 2 are chemically adhered to the vibration control rubber layer 3 composed of a vulcanization material of a special rubber composition using the following (A) to (D) as essential components. (A) a diene-based rubber or rubber having a methylene group, (B) a vulcanizing agent, (C) a resorcinol-based compound, and (D) a melamine-based resin. COPYRIGHT: (C)2007,JPO&INPIT
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