Patent · US Expired

Spindle motor

US7119464B2 · kind B2 · utility

2Cited by

4References

9Claims

0Family size

Assignee

Minebea Co., Ltd. · JP

Inventors

Dieter Braun · Spaichingen, DE
Joerg Hoffmann · Mettlach, DE

Key dates

Filing date	Dec 3, 2004
Grant date	Oct 10, 2006
Priority date	—
Expiry date	Dec 3, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH02K7/085
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a spindle motor, particularly for the purpose of driving the platters in hard disk drives having a baseplate, a stator arrangement that is stationary with respect to the baseplate, a shaft and a bearing system to rotatably support a rotary driven rotor connected to the shaft. In order to create a spindle motor in which it is possible to connect the shaft to the rotor with a high holding force and improved running precision, provision is made according to the invention for the shaft to be at least partly formed as a hollow shaft and for the rotor to have a shaft shoulder aligned concentric to its rotational axis which is inserted into the hollow shaft and firmly connected to the shaft.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.