HEIGHT DIRECTION ANGLE ADJUSTMENT MECHANISM OF GUIDE SHAFT FOR OPTICAL PICKUP

摘要

PROBLEM TO BE SOLVED: To provide a height direction angle adjustment mechanism of a guide shaft for an optical pickup which is favorable to the thickness reduction of an optical disk unit owing to a small occupied space with a simple structure, and can highly accurately perform the height direction attitude adjustment of the guide shaft. SOLUTION: A guide shaft 41 is held by the collaboration of a first bolt 61 screwed onto a base 10 from the second plate surface 10b side with a torsion spring 62 which presses and energizes a guide shaft 42 in a direction keeping away from the second plate surface 10b. The angular position of the height direction of the guide shaft 42 can be adjusted by rotating the first bolt 61. A guide shaft 41 is held by the collaboration of a second bolt 71 screwed from the plate surface 10b side with a tension spring 72 which pulls and energizes the guide shaft 41 in a direction keeping away from the second plate surface 10b. The angular position of the height direction of the guide shaft 41 can be adjusted by rotating the second bolt 71.