Precision Motors Deutsche Minebea Gmbh

J&uuml;rgen Oelsch

Olaf Winterhalter

Helmut Hans

Georg Moosmann

Manfred Rauer

King Hock Lee

The invention relates to a spindle motor, in particular for driving a hard disk drive, with a stator, a rotor and a shaft disposed between stator and rotor, which supports at least one roller bearing, which comprises an inner and an outer bearing ring with roller bodies disposed between them. According to the invention the spindle motor comprises a device for the temperature compensation. In a first embodiment the invention is distinguished thereby that at least one equilibration element is provided which acts onto the outer and/or inner bearing ring, &lsqb;which element is&rsqb; disposed between the corresponding bearing ring and a part supporting the bearing ring, and has a specified coefficient of thermal expansion &agr;. In a second embodiment the shaft is used as equilibration element, wherein the shaft comprises a material with a low coefficient of thermal expansion &agr;. As a further embodiment it is proposed to use for the bearing configuration roller bodies which comprise a material with a high coefficient of thermal expansion and thus act themselves as equilibration elements.

Spindle motor with temperature compensation

The invention relates to a spindle motor for solid-plate running gears with a stator, a rotor, the shaft of which is turnably borne with the aid of rolling bearings with respect to the stator, and a shell, in which the shell is constructed as a separate pot-shaped part closed on one side, on the outer circumference of which the stator is held and on the inner circumference of which the outer rings of the rolling bearings are held.

Spindle motor with sleeve for hard disc drives

A motor mount for small high-speed motors, consisting of radial and axial bearing components. The axial bearing is configured as a magnetic bearing and the radial bearing as an air bearing.

Motor mount for small high speed motors

This invention relates to a driving device, especially for hard disk drives, consisting of a stator, a rotor, an axis as well as corresponding bearings. The winding packet constituting the drive is arranged, together with the corresponding laminated core, on a holding sleeve, which projects axially on both sides over the laminated core. Possible production methods relating to this invention are also described.

Spindle motor for hard disks with cup-shaped sleeve

The invention relates to a spindle motor with a contact arrangement which comprises a stationary base flange carrying a central spindle, a hub which is pivotably borne on the spindle by means of suitable bearings and on which at least one hand disk is arranged, and a stator-sided winding assembly fastened to the base flange by means of a winding support, with the winding assembly being arranged opposite a rotor magnet, with electric contacting of the winding assembly being accomplished by means of a terminal fitting equipped with terminal lugs to which the leads coming from the winding assembly are connected. The invention is characterized by contact pins being arranged in/on the winding support which allow direct contacting between the leads of the winding assembly and the terminal lugs of the terminal fitting.

Growing community of inventors

Hohenroth, Germany

Jürgen Oelsch

Growing community of inventors

Hohenroth, Germany

J&uuml;rgen Oelsch

Jürgen Oelsch