公开(公告)号：JPH10302418A

公开(公告)日：1998-11-13

申请号：JP11277797

申请日：1997-04-30

Applicant: IBM

Inventor： TAKAHASHI KOJI ,  TAKAHASHI HIROSHI ,  KANNA BIJEESHUWARU ,  ALBRECHT THOMAS ,  KUMER SLESH ,  SURIJAIANTA MUTSUUTANBII

IPC: G11B5/54 ,  G11B21/02 ,  G11B21/22

Abstract: PROBLEM TO BE SOLVED: To provide the inertia latch mechanism with high reliability to be capable of mounting even on a thin structive disk drive device. SOLUTION: The inertia latch mechanism 7 is equipped with a latch lever 74 oscillatable around an oscillating axis 73 from an opening position to a latch position and an inertia lever 72 oscillatable around an oscillating axis 71 with a larger moment of inertia than the latch lever 74. When a counterclockwise impact is given to an actuator 22, the inertia lever 72 is oscillated counterclockwise, and the latch lever 74 is pulled by a 1st engagement projection 81 in a 1st engagement part 85 to move the latch lever 74 into a latch position. Then, when a clockwise impact is given to the actuator 22, the inertia lever 72 is oscillated clockwise, and the latch lever 74 is pushed by a 2nd engagement projection 82 in a 2nd engagement part 86 to collide against a crush stop 5 so as to latch the reversely oscillated actuator 22.