Browse Prior Art Database

Integrated Arm-Head Suspension for Magnetic Disk Files

IP.com Disclosure Number: IPCOM000034961D
Original Publication Date: 1989-May-01
Included in the Prior Art Database: 2005-Jan-28
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Else, KH: AUTHOR [+2]

Abstract

A magnetic head suspension design which eliminates the need for the customary arms in magnetic recording files is disclosed. This design is applicable for magnetic recording disk files with one head per recording surface, which is now standard for 5 1/4" diameter or smaller disks. By combining the arm and two head suspensions into a single piece, costly suspension to arm connections are eliminated. In addition, the dynamic performance (e.g., resonant frequencies and actuator access time) is greatly enhanced due to the reduction in moving mass. As shown in the figure, the length of regular head suspensions are increased to include the length of the arm. Two suspensions, one for the up-facing head and one for the down-facing head, are formed in the conventional way.

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Integrated Arm-Head Suspension for Magnetic Disk Files

A magnetic head suspension design which eliminates the need for the customary arms in magnetic recording files is disclosed. This design is applicable for magnetic recording disk files with one head per recording surface, which is now standard for 5 1/4" diameter or smaller disks. By combining the arm and two head suspensions into a single piece, costly suspension to arm connections are eliminated. In addition, the dynamic performance (e.g., resonant frequencies and actuator access time) is greatly enhanced due to the reduction in moving mass. As shown in the figure, the length of regular head suspensions are increased to include the length of the arm. Two suspensions, one for the up-facing head and one for the down-facing head, are formed in the conventional way. In addition, the extended region beyond the hinge area is now provided with 90o flanges which, after spot-welding two "mirror image" suspensions together, form a very stiff box structure. This new structure eliminates the arms used in conventional disk files as well as the need for costly suspension to arm attachment processes, such as ball swaging or screw mounting. Also, the mountblocks used on conventional suspensions are no longer required.

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