Bolting structure for magnesium alloy member

Abstract

The present invention provides a bolting structure for a magnesium alloy member, having a non-magnesium alloy and conventional member 12 disposed on the magnesium alloy member 15, the magnesium alloy member 15 being covered with an insulator 14, and a bolt 18 initially inserted through the magnesium alloy member 15 and then into the conventional member 12, thereby permitting the conventional member 12 and the magnesium alloy member 15 to be bolted together, comprising: a washer 17 disposed between a head 18a of the bolt 18 and the magnesium alloy member 15, the washer 17 having a boss 16 disposed thereon, wherein the magnesium alloy member 15 is formed with a through-hole 13 that is greater in diameter than a bolthole 19 of the washer 17. The above boss 16 and through-hole 13 eliminate a chance that the bolt 18 contacts the through-hole 13. The insulator 14 remains intact because of non-contact of the bolt 18 with the through-hole 13 so that no stray current corrosion occurs.

Dependencies are inferred from the claim text.