Mounting Structure of Magnetic Member, Bonding Method of Magnetic Member and Magnetic Connection Member, Pickup Apparatus, and Disc Apparatus

Abstract

A mounting structure of a magnetic member at least comprising: a magnetic member; and a magnetic coupling member provided with an adhesion securing portion configured to secure adhesive strength when bonded to the magnetic member.

1 . A mounting structure of a magnetic member at least comprising:
 a magnetic member; and   a magnetic coupling member provided with an adhesion securing portion configured to secure adhesive strength when bonded to the magnetic member.   
     
     
         2 . A mounting structure of a magnetic member at least comprising:
 a magnetic member;   a magnetic coupling member mounted with the magnetic member; and   an adhesive member bonding the magnetic member to the magnetic coupling member,   either one or both of the magnetic member and the magnetic coupling member being provided with an adhesion securing portion configured to secure adhesive strength.   
     
     
         3 . The mounting structure of the magnetic member of  claim 2 , wherein
 the adhesion securing portion is formed to include an uneven portion.   
     
     
         4 . The mounting structure of the magnetic member of  claim 2 , wherein
 the adhesion securing portion includes a substantially lattice-shaped uneven portion.   
     
     
         5 . The mounting structure of the magnetic member of  claim 2 , wherein
 the adhesion securing portion includes a substantially strip-shaped uneven portion.   
     
     
         6 . The mounting structure of the magnetic member of  claim 2 , wherein
 the adhesion securing portion includes a substantially radial uneven portion.   
     
     
         7 . The mounting structure of the magnetic member of  claim 2 , wherein
 the adhesion securing portion is formed to include an uneven portion whose depth is greater than 0 mm and smaller than or equal to substantially 0.2 mm.   
     
     
         8 . The mounting structure of the magnetic member of  claim 2 , wherein
 the adhesion securing portion includes grooves.   
     
     
         9 . The mounting structure of the magnetic member of  claim 2 , wherein
 the adhesion securing portion includes V grooves.   
     
     
         10 . The mounting structure of the magnetic member of  claim 2 , wherein
 the adhesion securing portion includes grooves in a substantially lattice pattern.   
     
     
         11 . The mounting structure of the magnetic member of  claim 2 , wherein
 the adhesion securing portion includes first direction grooves extending substantially along a first direction and second direction grooves extending substantially along a second direction.   
     
     
         12 . The mounting structure of the magnetic member of  claim 2 , wherein
 the adhesion securing portion includes grooves extending substantially radially.   
     
     
         13 . The mounting structure of the magnetic member of  claim 2 , wherein
 the adhesion securing portion includes grooves whose depth is greater than 0 mm and smaller than or equal to substantially 0.2 mm.   
     
     
         14 . The mounting structure of the magnetic member of  claim 2 , wherein
 the adhesion securing portion includes grooves each having a cross-sectional area greater than 0 mm 2  and smaller than or equal to substantially 0.05 mm 2 .   
     
     
         15 . The mounting structure of the magnetic member of  claim 2 , wherein
 an adhesive member reservoir portion configured to lead the adhesive member to the adhesion securing portion is provided on either one or both of the magnetic member and the magnetic coupling member.   
     
     
         16 . The mounting structure of the magnetic member of  claim 15 , wherein
 the adhesion securing portion is formed to include an uneven portion, wherein   the adhesive member reservoir portion is formed to include a dent portion, and wherein   the dent portion is located substantially on an upper side with respect to the uneven portion when the adhesive member that joins the magnetic member to the magnetic coupling member is applied to either one or both of the magnetic member and the magnetic coupling member.   
     
     
         17 . The mounting structure of the magnetic member of  claim 15 , wherein
 the adhesion securing portion includes grooves, wherein   the adhesive member reservoir portion includes a dent portion, and wherein   the grooves and the dent portion are substantially the same in depth.   
     
     
         18 . The mounting structure of the magnetic member of  claim 15 , wherein
 the adhesive member reservoir portion includes a dent portion whose depth is greater than 0 mm and smaller than or equal to substantially 0.2 mm.   
     
     
         19 . A pickup unit comprising the mounting structure of the magnetic member of  claim 2 . 
     
     
         20 . A method of bonding a magnetic member and a magnetic coupling member comprising:
 forming an adhesion securing portion configured to secure adhesive strength on either one or both of the magnetic member and the magnetic coupling member; and   bonding the magnetic member to the magnetic coupling member.   
     
     
         21 . The method of bonding the magnetic member and the magnetic coupling member of  claim 20 , wherein
 the adhesion securing portion is formed with a metal mold.   
     
     
         22 . The method of bonding the magnetic member and the magnetic coupling member of  claim 20 , wherein
 the adhesion securing portion is formed by performing presswork.   
     
     
         23 . The method of bonding the magnetic member and the magnetic coupling member of  claim 20 , wherein
 the adhesion securing portion is formed by performing transfer processing.   
     
     
         24 . A pickup unit wherein the method of bonding the magnetic member and the magnetic coupling member of  claim 20  is performed. 
     
     
         25 . A disc apparatus comprising the pickup unit of  claim 19 .