FIXING DEVICE

PURPOSE:To simplify the structure of a fixing device to reduce manufacturing costs by forming the device by a spring body made of shape-memory alloy, and elastic member connected to objects to be fixed, and an heating element, and forming the spring body by a material contracting when heated to a sp...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	IGARASHI TAKAFUMI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING EMBANKMENTS ENGINEERING ELEMENTS AND UNITS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HYDRAULIC ENGINEERING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PIPES SOIL SHIFTING SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL UNDERGROUND OR UNDERWATER STRUCTURES WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To simplify the structure of a fixing device to reduce manufacturing costs by forming the device by a spring body made of shape-memory alloy, and elastic member connected to objects to be fixed, and an heating element, and forming the spring body by a material contracting when heated to a specified temperature and extending at a temperature close to room temperature. CONSTITUTION:A spring body 1 is a spring, etc., made from shape-memory alloy as raw material. The spring body 1 is sometimes manufactured so that it contracts when it is heated to a specified temperature, and extends at a temperature close to room temperature, and on the contrary, it is manufactured so that it contracts at a temperature close to room temperature and extends when it is heated to a specified temperature. Further, a heating element 2 such as nichrome wire, etc., is accommodated in the spring body 1, and the heating element 2 and the power supply unit on the ground surface are connected to each other by a cord 21. An elastic member 4 is made of hard rubber, etc., as raw material, and formed into a cylinder, etc. The elastic member 4 is positioned on the outer periphery of the spring body 1, and its both ends are fixed to cut edge parts of objects 3, 31 to be fixed.