Fitting structure for fitting laser holder to base member

Abstract

A fitting structure for fitting a laser holder holding a semiconductor laser to a base member in an optical pickup device includes a support member of a metal plate that supports the laser holder. The support member integrally has: a base part having a laser passage hole that is formed in the center thereof for permitting laser light from the semiconductor laser to pass therethrough; an upper projecting part and a lower projecting part that respectively project from the upper and the lower edges of the base part so as to oppose each other and that support the laser holder so that the laser holder can swing about the vertical axis; and a bending part that is elastically deformable and that first projects from the upper edge of the base part toward a side opposite to a side toward which the upper projecting part projects and then is bent downward and also inward toward the base part. The base part is inserted from the lower projecting part along the plate-like fitting part of the base member, whereby the plate-like fitting part becomes sandwiched between the bending part and the base part by an elastic restoring force of the bending part, and then, after optical axis adjustment of the semiconductor laser, the laser holder, the support member, and the base member are fixed to one another with an adhesive.

1 . A fitting structure for fitting a laser holder holding a semiconductor laser to a base member in an optical pickup device, the fitting structure comprising a support member of a metal plate that supports the laser holder, 
 wherein the support member integrally has: a base part having a laser passage hole that is formed in a center thereof for permitting laser light from the semiconductor laser to pass therethrough; an upper projecting part and a lower projecting part that respectively project from an upper and a lower edges of the base part so as to oppose each other and that support the laser holder so that the laser holder can swing about a vertical axis; and a bending part that is elastically deformable and that first projects from the upper edge of the base part toward a side opposite to a side toward which the upper projecting part projects and then is bent downward and also inward toward the base part, and    wherein the base part is inserted from the lower projecting part along the plate-like fitting part of the base member, whereby the plate-like fitting part becomes sandwiched between the bending part and the base part by an elastic restoring force of the bending part, and then, after optical axis adjustment of the semiconductor laser, the laser holder, the support member, and the base member are fixed to one another with an adhesive.    
   
   
       2 . The fitting structure for fitting a laser holder to a base member according to  claim 1 , 
 wherein the bending part is formed on both a left and a right sides of the upper projecting part.    
   
   
       3 . The fitting structure for fitting a laser holder to a base member according to  claim 1 , 
 wherein a leading end portion of the bending part is bent outward.    
   
   
       4 . The fitting structure for fitting a laser holder to a base member according to  claim 1 , 
 wherein the adhesive is an ultraviolet curable adhesive.    
   
   
       5 . The fitting structure for fitting a laser holder to a base member according to  claim 1 , 
 wherein the laser holder and the base member are formed of metal.