Electronic apparatus and hard disk drive

Abstract

According to one embodiment, an electronic apparatus includes a case, a printed circuit board contained in the case and having a through-hole, and a fixing member including a shaft portion inserted in the through-hole and a head portion located at one end of the shaft portion. The electronic apparatus also includes copper foil provided on the printed circuit board, and a cover film including an opening portion configured to expose part of the copper foil. The opening portion is located at a position which is to be covered with the head portion, and the cover film covers the copper foil at positions other than the position where the opening portion is located. The electronic apparatus further includes a conductive material provided on the copper foil inside the opening portion and configured to electrically connect the head portion and the copper foil to each other.

1 . An electronic apparatus comprising:
 a case;   a printed circuit board contained in the case and comprising a through-hole;   a fixing member comprising a shaft portion inserted in the through-hole and a head portion located at one end of the shaft portion, and configured to fix the printed circuit board and the case to each other, and is electrically connected with the case;   copper foil provided on the printed circuit board;   a cover film comprising an opening portion configured to expose part of the copper foil, the opening portion being located at a position which is to be covered with the head portion, the cover film covering the copper foil at positions other than the position where the opening portion is located; and   a conductive material provided on the copper foil inside the opening portion and configured to electrically connect the head portion and the copper foil to each other.   
     
     
         2 . The electronic apparatus of  claim 1 , where the opening portion is located at a position away from the through-hole. 
     
     
         3 . The electronic apparatus of  claim 1 , further comprising:
 a seal member configured to seal periphery of the head portion.   
     
     
         4 . The electronic apparatus of  claim 1 , wherein
 the copper foil pieces arranged radially around the through-hole on the printed circuit board.   
     
     
         5 . An electronic apparatus comprising:
 a case;   a printed circuit board contained in the case;   a fixing member configured to fix the printed circuit board and the case to each other;   copper foil provided on the printed circuit board;   a cover film comprising an opening portion configured to expose part of the copper foil, the cover film being configured to cover the copper foil at positions other than the opening portion; and   a conductive material provided on the copper foil inside the opening portion and configured to electrically connect the head portion and the copper foil,   the opening portion of the cover film being in tight contact with the case.   
     
     
         6 . The electronic apparatus of  claim 1 , further comprising a seal member configured to seal a gap between periphery of the head portion and the opening portion, wherein the head portion is fitted inside the opening portion. 
     
     
         7 . An electronic apparatus comprising:
 a case;   a printed circuit board contained in the case and comprising a through-hole;   a fixing member comprising a head portion configured to cover an exit area of the through-hole, and inserted in the through-hole in a manner to fix the printed circuit board and the case to each other;   copper foil provided on the printed circuit board and configured to protrude inside the through-hole to be electrically connected with the fixing member; and   a cover film configured to cover the copper foil.   
     
     
         8 . A hard disk drive comprising:
 a case;   a printed circuit board contained in the case and comprising a through-hole;   a fixing member comprising a shaft portion inserted in the through-hole and a head portion located at one end of the shaft portion, and configured to fix the printed circuit board and the case to each other, and is electrically connected with the case;   copper foil provided on the printed circuit board;   a cover film comprising an opening portion configured to expose part of the copper foil, the opening portion being located at a position which is to be covered with the head portion, the cover film covering the copper foil at positions other than the position where the opening portion is located; and   a conductive material provided on the copper foil inside the opening portion and configured to electrically connect the head portion and the copper foil.