FASTENING MEMBER AND ANTICORROSIVE STRUCTURE OF JOINING PART INCLUDING THIS FASTENING MEMBER

• Main Authors: NAKAYA NOBUTO, WAKANA KAZUYUKI, IMAMURA KEIJI, SONE YUKIHIRO
• Format: Patent
• Language: English
• Published: 01.11.2007
• Subjects: ASSEMBLY OF BRIDGES; BLASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; DIFFUSION TREATMENT OF METALLIC MATERIAL; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; OR VIADUCTS; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide a simple and inexpensive fastening member and an anticorrosive structure of a joining part including this fastening member, anticorrosive over a long period, and capable of preventing even clearance corrosion. SOLUTION: This anticorrosive structure of the fastening member is composed of a bolt fastened to a fastening object member, a nut threadedly engaged with a screw part of the bolt, a washer fitted between the fastening object member and a head part of the bolt, and a washer fitted to the screw part of the bolt between the fastening object member and the nut. The anticorrosive structure of the fastening member is adopted for fitting an anticorrosive ring composed of a ring-shaped anticorrosive material having the current flowing anodic action and a resin ring arranged on its outer periphery, to a side peripheral surface of the washer fitted to the screw part of the bolt between the fastening object member and the nut, by threadedly engaging a nut-shaped anticorrosive material having the current flowing anodic action with the outside of the nut threadedly engaged with the screw part of the bolt. COPYRIGHT: (C)2008,JPO&INPIT