Title:
ディスク型記録再生装置の駆動装置
Document Type and Number:
Japanese Patent JP3611182
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a drive device of a disk recording/reproducing device, which improves deterioration of rotary noise and deterioration of NRR (non- repetitive fluctuation precision) due to deterioration of the roundness of a ball bearing connecting a rotor 6 and a shaft 3, so that they can freely turn in the drive device of the disk recording/reproducing device such as an HDD spindle motor. SOLUTION: At the time of press-fitting and bonding a ball bearing 2, preparessure is given and the contact point of a ball 2b is made to be constant. A relief part 1c in which adhesive is not applied and into which adhesive does not flow is installed in the inner peripheral part of a rotor 6 near the contact point of the ball 2b. Thus, deterioration of roundness of the outer ring race face due to hardening of adhesive can be prevented and deterioration by rotary noise and NRRO can be prevented.
Inventors:
Akira Nishio
Application Number:
JP27971099A
Publication Date:
January 19, 2005
Filing Date:
September 30, 1999
Export Citation:
Assignee:
Victor Company of Japan, Ltd.
International Classes:
H02K5/173; F16C25/08; F16C35/067; (IPC1-7): H02K5/173
Domestic Patent References:
| JP1042512A | ||||
| JP580151U | ||||
| JP10146007A |