Coil spring for vehicle suspension
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United States of America Patent
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Dec 18, 2018
Grant Date -
Aug 2, 2018
app pub date -
Jan 31, 2017
filing date -
Jan 31, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A coil spring for use in a link-motion-type suspension includes a lower end turn portion, an upper end turn portion, and an effective portion of a cylindrical shape between the lower end turn portion and the upper end turn portion. Further, the coil spring includes a bowing control portion including a taper portion formed in at least one end turn portion of the lower end turn portion and the upper end turn portion. The taper portion has a shape whose thickness is reduced from the middle of the end turn portion toward a distal end of a wire along its length, and bowing of the effective portion is suppressed by absorbing a change in the inclination of a spring seat by the taper portion.
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