Patent ID: 7464388
Filing Date: 2008-12-09
Classification: G11B

Abstract:
1. An optical pickup comprising a base member mounted astride a main shaft and a secondary shaft with the travel thereof adapted to be guided by said main shaft; a printed circuit board with a control element mounted on the base member; a radiator plate mounted on said base member for suppressing elevated operating temperatures in said control element; and a secondary bearing part adapted to slide relative to said secondary shaft comprises an overlapping sliding face slidably overlapping said secondary shaft and an auxiliary overlapping face forming a clearance with said secondary shaft on the opposite side of said overlapping sliding face with respect to said secondary shaft; wherein said radiator plate has: an overlapping portion overlapping said control element that is positioned in the vicinity of said secondary shaft; a contact piece overlapping said secondary bearing part that is made of metal; and a pressing piece comprising a plate-like suspended piece portion formed at an end edge on a side facing said secondary shaft in a bent manner to extend along the inside of said secondary shaft, and a main piece portion formed at an end edge of said suspended piece portion in a bent manner to be in elastic contact with said secondary shaft to bring said overlapping sliding face of said secondary bearing part into elastic contact with said secondary shaft, said pressing piece arranged laterally adjacent to said secondary bearing part, and a cable extended out of said printed circuit board being held by said suspended piece portion of said pressing piece to be kept away from said secondary shaft.