Abstract: The present disclosure provides a protective casing, configured for protecting an electronic device. The protective casing comprises an outer casing and an inner casing. The outer casing is made of metal material. The inner casing is positioned inside the outer casing. The inner casing is made of nonmetal material, and the inner casing is clipped with the outer casing.

Abstract: The present invention is to provide a grounding part of hard disk (HDD) against EMI and shock, which includes a HDD body and two conducting frames, wherein the two conducting frames are composed of a narrow vertical plane and two parallel planes extending along two corresponding sides of the vertical planes to form a U-type conducting frame with an opening, a plurality of elastic projections are disposed on the two parallel planes of the two conducting frames, and the openings of the two frames just accommodate the two corresponding sides of the HDD body. When the HDD body and the two conducting frames is installed in a containing room of an electronic device (e.g. notebook computer), the requirements of shock protection, EMI protection and grounding for the HDD body is achieved by virtue of the compression of those elastic projections.

Abstract: The present invention is to provide a grounding part of hard disk (HDD) against EMI and shock, which includes a HDD body and two conducting frames, wherein the two conducting frames are composed of a narrow vertical plane and two parallel planes extending along two corresponding sides of the vertical planes to form a U-type conducting frame with an opening, a plurality of elastic projections are disposed on the two parallel planes of the two conducting frames, and the openings of the two frames just accommodate the two corresponding sides of the HDD body. When the HDD body and the two conducting frames is installed in a containing room of an electronic device (e.g. notebook computer), the requirements of shock protection, EMI protection and grounding for the HDD body is achieved by virtue of the compression of those elastic projections.