| 摘要 |
PURPOSE: A bush for a rear suspension is provided to increase the spring constant by modifying the shape of an inner pipe and rubber, and to prevent noise and improve restoring force and durability by decreasing the hardness of the rubber. CONSTITUTION: A bush(500) for a rear suspension is composed of an inner pipe(200), a rubber(300) integrally combined with the inner pipe, and an outer pipe for pressing and fitting the rubber. An expansion part(210) is formed in the center of the inner pipe, and the rubber is composed of a left flange(310), a middle portion(320) and a right flange(330). Grooves are formed between the left flange and the middle portion and the right flange and the middle portion, and a recessed groove(325) is formed in the middle portion. The hardness of the rubber is 50 to 60, and the indentation strength of the middle portion is 30 to 35% in fitting the rubber into the outer pipe.
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