Patent ID: 7712112

Claim:
An optical disk device, including a spindle motor for rotating an optical disk, and an optical pickup head, movable in a radial direction of said optical disk, for reading from or writing to said optical disk, said optical disk device comprising: a base plate; a motor plate, having a surface opposed to said base plate, for supporting said spindle motor secured to said surface; a spacer, secured to said base plate, for supporting said motor plate with a predetermined space; a spacer boss disposed at an end of said spacer, and having a smaller diameter; a first hole formed through said spacer boss; a second hole, formed in said motor plate, for receiving insertion of said spacer boss; a retaining hole formed in said base plate; a retaining element, inserted in said first hole and said retaining hole, for retaining said motor plate to said base plate with said spacer; said retaining element including a retaining portion, a spread portion and a pinhead portion formed sequentially on one another; said retaining portion being inserted through said first hole, and retained in said retaining hole; said spread portion having a greater diameter than a diameter of said first hole, being pressed through said first hole forcibly, for spreading said spacer boss outwards to fit a peripheral surface of said spacer boss tightly in said second hole; and said pinhead portion having a greater diameter than a diameter of said second hole, for mounting on said motor plate.