Suspension assembly and magnetic disk drive

摘要

A compact hard disk drive that operates silently at a low power consumption needs a suspension assembly that places a low load on the magnetic head. A suspension assembly 104 comprises a head arm 10 mounted on a carriage shaft 105, a load beam 20 capable of placing load on a magnetic head 3 and serving as a beam, and a flexure assembly 30. The flexure assembly 30 includes a flexure 31 formed by processing a thin metal sheet, an insulating layer 32 laminated to the flexure 31, a wiring pattern 33 formed on the insulating layer 32, and a protective layer 34 coating the wiring pattern 33. The flexure 31 has a flexible part 310 for placing load on the magnetic head 3, a gimbals 311 to which the magnetic head 3 is attached, and a base part 312 attached to the head arm 10. The elastic part 310 of the flexure 31 generates a very load in the range of about 0.5 to about 1 g.