Patent ID: 7199980
Filing Date: 2007-04-03
Classification: B23K,G11B,Y10T

Abstract:
1. A welded plate structure welded by a laser, comprising: plates including a first plate having a first surface and an opposing second surface, and a second plate disposed adjacent the second surface of the first plate; the first plate being formed of a plate material and defining a recess in the first surface having a recess bottom and a recess side surface bordering the recess bottom, the bottom surface and the recess side surface being formed of the plate material of the first plate; the first plate having a thin part defined by the recess bottom and the second surface of the first plate and having a weld spot formed by a laser beam welding the first and second plates together; the second plate and having a through hole; and the recess bottom having a through hole at a position other than the weld spot and aligned with the through hole of the second plate to provide a through opening extending through the recess bottom and the second plate to communicate a volume of the recess to outside of the second plate.