| 摘要 |
PROBLEM TO BE SOLVED: To make a difference of a stress generated at a radial side portion of a coil and a stress generated at a radial outer side potion less in a coil spring assembly in which an intermediate sheet is provided on a coil spring extended in a rotation direction. SOLUTION: In a first coil spring assembly 24, a coil spring 33 comprises a plurality of coils extending in a rotation direction. The coil spring 33 has a V-shaped portion opened to a radial inner side. The V-shaped portion comprises a first portion 63 approximately straightly extending, a second portion 64 and a bent portion 65 formed therebetween. The intermediate sheet 33 is disposed at a bent portion 65 of the coil spring 30 and has a receiving portion for receiving at least radial outer side portion of an end surface of the first portion 63 and an end surface of the second portion 64. It is restricted that a plurality of radial inner side portions at the bent portion 65 are approached each other in the rotation direction.
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