COIL SPRING, SUSPENSION DEVICE, AND METHOD FOR MANUFACTURING COIL SPRING

To provide a coil spring that is excellent in settling resistance and corrosion fatigue resistance, and to provide a suspension device including the coil spring and a method for manufacturing the coil spring.SOLUTION: A coil spring is formed of a spirally wound wire and includes an end coil part and...

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Hauptverfasser:	SUZUKI TAKESHI, SHIBAIRI KOSUKE, TANAKA REI, YAMAUCHI YUICHIRO, OKADA HIDEKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING CHEMISTRY ENGINEERING ELEMENTS AND UNITS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL SHOCK-ABSORBERS SPRINGS THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLE SUSPENSION ARRANGEMENTS VEHICLES IN GENERAL WEAPONS WORKING OR PROCESSING OF METAL WIRE
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Beschreibung
Zusammenfassung:	To provide a coil spring that is excellent in settling resistance and corrosion fatigue resistance, and to provide a suspension device including the coil spring and a method for manufacturing the coil spring.SOLUTION: A coil spring is formed of a spirally wound wire and includes an end coil part and an effective part, where a surface of the wire in the end coil part has a region that is softer than a surface of the wire in the effective part.SELECTED DRAWING: Figure 2 【課題】耐へたり性や耐腐食疲労性に優れたコイルばね、当該コイルばねを備えた懸架装置、さらには当該コイルばねの製造方法を提供する。【解決手段】一実施形態に係るコイルばねは、螺旋状に巻かれた素線により形成され、座巻部および有効部を有し、前記座巻部における前記素線の表面は、前記有効部における前記素線の表面よりも柔らかい領域を有している。【選択図】図２