Patent ID: 7380253

Claim:
A recording disk drive apparatus for recording an information into a recording disk and/or reading the information from the recording disk, comprising, a chassis including a chassis body, a spindle motor fixed to the chassis body to support and rotationally drive the recording disk, and a head supported on the chassis body to be movable on the chassis body in a radial direction of the recording disk so that the information is recorded in to the recording disk and/or read from the recording disk through the head, a base member on which the chassis is supported, and an elastic member through which the chassis is supported on the base member so that a vibration transmitted from the chassis is absorbed at least partially by an elasticity of the elastic member, wherein the chassis further includes a counter member elastically supported on the chassis body to be movable with a spring constant with respect to the chassis body, wherein the counter member includes an electrically conductive portion so that at least one of an electric energy for driving the spindle motor, an electric control signal for controlling the spindle motor, an electric energy for driving the head, an information electric signal transmitted between the head and the recording disk and an electric control signal for controlling the head is transmitted through the electrically conductive portion of the counter member.