公开(公告)号：JPH08102159A

公开(公告)日：1996-04-16

申请号：JP23191894

申请日：1994-09-27

Applicant: IBM

Inventor： MATSUDA HIROSHI ,  KOYANAGI ICHIRO ,  MUSAZANBII SURIIJIYANSA ,  BIJIYAIESUWAA KANNA ,  SURESHIYU KUMAA

IPC: G11B5/40 ,  G11B5/54 ,  G11B21/02 ,  G11B21/21 ,  G11B33/08 ,  G11B33/12

Abstract: PURPOSE: To eliminate the damage of a magnetic head, magnetic disk and to reduce in thickness of a magnetic disk apparatus by specifying the deflection of a suspension due to the impact. CONSTITUTION: If HDD receives an impact in the state that a magnetic disk 22 is retracted in a shipping zone, a suspension 34 having a magnetic head 36 at the free end is deflected. When the case that the lowermost suspension 34 is deflected is observed, the free end of the suspension 34 is brought into contact with a pin protrusion 50 to prevent the further displacement toward a base 12. The suspension 34 further deflected in this state is not deflected in primary mode (cantilever support mode), but deflected in a secondary mode of both ends support (both ends support mode), and the maximum displacement of the suspension 34 occurs at the intermediate part of the suspension 34. The displacing intermediate part is intruded into the groove 48, and the contact with the base 12 of the intermediate part of the suspension 34 is prevented by the grove 48.