Browse Prior Art Database

Motor-Alignment Shim

IP.com Disclosure Number: IPCOM000060057D
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 22K

Publishing Venue

IBM

Related People

Korecky, JJ: AUTHOR [+3]

Abstract

The structure of this alignment device provides for the fixturing and alignment of the rotor and stator portions of a motor, of the type used to rotate a disk drive spindle assembly, during shipping and mounting. The aligning shim or fixture 5 is a thin strip of plastic material, such as polyethylene, having a thickness equivalent to the clearance to be established between the stator, and rotor of the motor. The solid strip portion 6 provides the clearance between rotor and stator, and a series of guide tabs 7 bend outwardly when the strip is placed within the motor stator cavity to enable the rotor to be guided into the assembled condition. The strip is debossed along line 8 at the base of the tabs to form a hinge location and cause the tabs to fold toward the side debossed.

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Motor-Alignment Shim

The structure of this alignment device provides for the fixturing and alignment of the rotor and stator portions of a motor, of the type used to rotate a disk drive spindle assembly, during shipping and mounting. The aligning shim or fixture 5 is a thin strip of plastic material, such as polyethylene, having a thickness equivalent to the clearance to be established between the stator, and rotor of the motor. The solid strip portion 6 provides the clearance between rotor and stator, and a series of guide tabs 7 bend outwardly when the strip is placed within the motor stator cavity to enable the rotor to be guided into the assembled condition. The strip is debossed along line 8 at the base of the tabs to form a hinge location and cause the tabs to fold toward the side debossed. With the line of debossment at the outside when the continuous portion 6 is ministered within the stator cavity, the tabs incline outwardly to receive and guide the rotor to a position of concentricity within the stator. With the shim installed, the motor can be shipped and installed. During installation, the stator is mated to the disk drive base and the rotor is mated to the disk spindle assembly. The shim is withdrawn prior to power up or use of the drive. The shim may be reinstalled between the rotor and stator to allow for the motor's removal and installation on another spindle.

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