Disk drive unit and ramp tool for assembling the same

Abstract

A disk drive unit includes a first cover having a first part of magnet component and a head stack assembly mounted on the first cover; and a second cover assembled with the first cover, which has a second part of magnet component, a spindle motor, at least one disk and a ramp adjacent to the disk; wherein a ramp tool opening is formed on the first cover corresponding to the ramp, through which a ramp tool can extend to hold the head stack assembly in a loading status. The invention also discloses a ramp tool used for assembling the disk drive which has its disk and HSA assembled in two different halves, which includes a tool body; and a holding means extending from the tool body to hold a lift tab of a head stack assembly in a loading status, wherein the lift tab is engaged with a ramp in the disk drive unit.

1 . A disk drive unit comprising:
 a first cover having a first part of magnet component and a head stack assembly mounted on the first cover; and   a second cover assembled with the first cover, which has a second part of magnet component, a spindle motor, at least one disk and a ramp adjacent to the disk;   wherein a ramp tool opening is formed on the first cover corresponding to the ramp, through which a ramp tool can extend to hold the head stack assembly in a loading status.   
   
   
       2 . A disk drive unit as claimed in  claim 1 , wherein the ramp tool opening is made up of an arc opening with an obtuse angle and a bar opening. 
   
   
       3 . A disk drive unit as claimed in  claim 1 , wherein the ramp tool opening is sealed by a adhesive tape or a plug. 
   
   
       4 . A disk drive unit as claimed in  claim 1 , wherein the head stack assembly comprises a suspension with a lift tap formed at an end thereof, the lift tab is engaged with the ramp by being transferred from the ramp tool to the ramp. 
   
   
       5 . A disk drive unit as claimed in  claim 1 , wherein the head stack assembly is mounted on the first cover by a bearing. 
   
   
       6 . A disk drive unit as claimed in  claim 1 , wherein the first cover is combined with the second cover by securing means. 
   
   
       7 . A ramp tool used for assembling disk drive unit which has its disk and HSA assembled in two different halves, comprising:
 a tool body; and   
     a holding means extending from the tool body to hold a lift tab of a head stack assembly in a loading status, wherein the lift tab is engaged with a ramp in the disk drive unit. 
   
   
       8 . The ramp tool according to  claim 7 , wherein the tool body is cylinder-shaped. 
   
   
       9 . The ramp tool according to  claim 7 , wherein the holding means vertically extends from the side of the tool body. 
   
   
       10 . The ramp tool according to  claim 7 , wherein the holding means is a bar-shaped plate. 
   
   
       11 . The ramp tool according to  claim 7 , wherein the holding means and the tool body are a one-piece structure. 
   
   
       12 . The ramp tool according to  claim 7 , wherein the ramp tool further comprises a handle connected with the tool body for operating the ramp tool. 
   
   
       13 . The ramp tool according to  claim 12 , wherein the handle is cylinder-shaped. 
   
   
       14 . The ramp tool according to  claim 12 , wherein the handle has a contour larger than that of the tool body.