Browse Prior Art Database

Slidably Installed, Locking Bearing Having Self-Setting End Play Feature

IP.com Disclosure Number: IPCOM000034505D
Original Publication Date: 1989-Mar-01
Included in the Prior Art Database: 2005-Jan-27
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Schaefer, JO: AUTHOR

Abstract

Disclosed is a motor bearing which is slidably inserted in the rear housing thereof and which provides automatic end play and positional locking following installation. The section view of the bearing (B) illustrates the general configuration which typically comprises a rigid outer ring and inner bearing, (B1) and (B2) respectively, and an angled flexible membrane surface (B3) in between. The membrane surface (B3) is typically angled at three degrees and always in the direction of insertion with respect to the outer ring. An installation ram (R) pushes the bearing into the cylindrical hole in the motor housing member (M1) of motor (M), first contacting the end of the bearing (B2) to displace it forwardly some small amount before contacting the outer ring (B1).

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Slidably Installed, Locking Bearing Having Self-Setting End Play Feature

Disclosed is a motor bearing which is slidably inserted in the rear housing thereof and which provides automatic end play and positional locking following installation. The section view of the bearing (B) illustrates the general configuration which typically comprises a rigid outer ring and inner bearing, (B1) and (B2) respectively, and an angled flexible membrane surface (B3) in between. The membrane surface (B3) is typically angled at three degrees and always in the direction of insertion with respect to the outer ring. An installation ram (R) pushes the bearing into the cylindrical hole in the motor housing member (M1) of motor (M), first contacting the end of the bearing (B2) to displace it forwardly some small amount before contacting the outer ring (B1). This forward displacement of the bearing increases the angle and slightly reduces the diameter of the outer ring to facilitate insertion. Insertion continues until the bearing is stopped by the rotor (M2) after it becomes rigidly trapped between the front and rear bearings. Following full insertion, the ram (R) is withdrawn, immediately breaking contact with the bearing outer ring (B1). Contact with the bearing (B2) is not immediately broken, however, as the bearing, which was pushed ahead of the outer ring during installation, now follows the ram back some small amount under the urging of the previously stressed center membrane. As th...