To prevent the galvanic corrosion of structural members, in a fastening structure in which a plurality of structural members including a structural member formed of a magnesium alloy or an aluminum alloy are fastened by a fastening member formed of a metal that is nobler in electrical potential than magnesium and aluminum.
A first structural member 10 formed of a magnesium alloy or the like and a second structural member 20 are stacked to align mounting holes 11, 21, the shaft 31a of a bolt 31 as a fastening member is inserted from the first structural member 10 side into the mounting holes 11, 21, and a nut 32 is screwed to the bolt from the second structural member 20 side. An insulator 40 formed of a synthetic resin is interposed between the structural members 10, 20 and the bolt 31 and the nut 32. The insulator 40 is composed of a sleeve 41 and a flange 42 as an integrated part and a washer 43 as a separate part. No migration of electrons is induced between the structural members 10, 20 and the bolt 31 and the nut 32, and thereby, galvanic corrosion can be prevented.
NUMANO MASASADA
KAWABE NOZOMI
| JP2001271813A | 2001-10-05 | |||
| JPH04101861U | 1992-09-02 | |||
| JPS5215440A | 1977-02-05 | |||
| JP2010516538A | 2010-05-20 | |||
| JP2006007266A | 2006-01-12 |
Takayoshi Tagawa
Naoya Kamata
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