Coil spring

A coil spring receiving a load stably in a tight contact state, shortening the tight contact length by decreasing the oblateness, and enhancing uniformity of stress distribution by the continuity of stress dispersion in the circumferential direction of a cross-section shape. A coil spring (1), in wh...

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Bibliographic Details
Main Authors YABUSHITA TAKESHI, FENIOUX DANIEL, KATO NOBUHARU
Format Patent
LanguageChinese
English
Published 30.12.2009
Subjects
BLASTING
ENGINEERING ELEMENTS AND UNITS
GEARING
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MEANS FOR DAMPING VIBRATION
MECHANICAL ENGINEERING
SHOCK-ABSORBERS
SPRINGS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:A coil spring receiving a load stably in a tight contact state, shortening the tight contact length by decreasing the oblateness, and enhancing uniformity of stress distribution by the continuity of stress dispersion in the circumferential direction of a cross-section shape. A coil spring (1), in which, with regard to the outer circumferential shape of a cross-section of a spring strand (3) wound in a coil shape, the outer diameter side portion (7) or the inner diameter side portion (5) of the coil has a semicircular shape expressed by x +y =b , and the inner diameter side portion (5) or the outer diameter side portion (7) of the coil has a noncircular shape expressed by (x/a)+(y/b)=1 where a is the long diameter, b is the short diameter and alpha has a value in the range of 1.85-2.45, characterized in that flat surfaces (9, 11); against which the coil portions adjoining in the direction of the coil axis (4) can abut are provided between the inner and outer diameter side portions (5, 7) of the coil in the out
Bibliography:Application Number: CN2008803129