Spindle motor having holding magnet preventing oil discharge

Details Spindle motor having holding magnet preventing oil discharge Spindle motor having holding magnet preventing oil discharge

2011-02-01

2011-02-01

Tamai, Karl I (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S051000, C310S06700R

Reexamination Certificate

active

07880353

ABSTRACT:
Disclosed herein is a spindle motor. The spindle motor includes a rotating shaft, a rotor cover which is secured to the rotating shaft and rotates the rotating shaft, a bearing for rotatably supporting the rotating shaft, a holder for holding the bearing, and a holding magnet which is directly mounted to an inner wall of the rotor cover. In this case, the holding magnet is positioned above the bearing to prevent oil from being discharged from the bearing to the outside.

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Machine translation of JP 2003-299302, “Spindle Motor With Axial Vibration Preventing Mechanism”, Oct. 17, 2003.
Machine Translation of JP 2003-079095, “Axial Vibration Preventing Mechanism and Brushless Motor Provided Therewith”, Tsuchiya, Masahisa, Mar. 14, 2003.
Korean Patent Office Action, dated Nov. 22, 2006, and issued in corresponding Korean Patent Application No. 10-2005-0121753.
Japanese Office Action dated Sep. 15, 2009 and issued in corresponding Japanese Patent Application 2006-331623.

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