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US 8,076,806 B2Granted
Spindle motor having bushing
AssigneeLG Innotek Co., Ltd.
InventorTae Wook Lee
Life of this patent
Estimating the term…
Abstract
A spindle motor is provided. The spindle motor includes a base, a bearing housing, a bearing, a rotation shaft, a stator, a bushing, and a rotor. The bearing housing is installed on the base. The bearing is fixed inside the bearing housing. The rotation shaft is installed to be supported by and rotate on the bearing. The stator is disposed around the bearing housing. The bushing is coupled to the rotation shaft. The rotor is coupled to the bushing to rotate through interaction with the stator.
Claims20
A spindle motor comprising:
- a base;
- a bearing housing installed on the base;
- a bearing fixed inside the bearing housing;
- a rotation shaft rotatably installed into the bearing;
- a stator disposed around the bearing housing;
- a bushing coupled to the rotation shaft, wherein the bushing is coupled through being press-fitted to the rotation shaft;
- a rotor coupled to the bushing to rotate through interaction with the stator, wherein the rotor comprises a rotor yoke coupled to the bushing and a magnet coupled to the rotor yoke, and wherein the rotor yoke is coupled through adhesion to the bushing;
- a rubber liner installed on an upper surface of the rotor yoke;
- and
- a clamp coupled to the rotor yoke, wherein the clamp is configured to elastically support a disk mounted on the rotor yoke,
- wherein the bushing is spaced from the clamp,
- wherein an uppermost surface of the bushing is lower than an uppermost surface of the clamp, and wherein a lowermost surface of the bushing is higher than a lowermost surface of the clamp.
9 more elements
A spindle motor comprising:
- a base;
- a bearing housing installed on the base;
- a bearing fixed inside the bearing housing;
- a rotation shaft rotatably installed into the bearing;
- a stator disposed around the bearing housing;
- a bushing coupled to the rotation shaft, wherein the bushing is coupled through being press-fitted to the rotation shaft;
- a rotor coupled to the bushing to rotate through interaction with the stator, wherein the rotor comprises a rotor yoke coupled to the bushing and a magnet coupled to the rotor yoke, and wherein the rotor yoke is coupled through adhesion to the bushing;
- a rubber liner installed on an upper surface of the rotor yoke;
- and
- a clamp fixed to the rotor yoke, wherein the clamp is configured to elastically support a disk mounted on the rotor yoke,
- wherein the clamp is spaced from an upper surface and a lateral surface of the bushing,
- wherein an uppermost surface of the bushing is lower than an uppermost surface of the clamp, and wherein a lowermost surface of the bushing is higher than a lowermost surface of the clamp.
9 more elements
A spindle motor comprising:
- a base;
- a bearing housing installed on the base;
- a bearing fixed inside the bearing housing;
- a rotation shaft rotatably installed into the bearing;
- a stator disposed around the bearing housing;
- a bushing coupled to the rotation shaft, wherein the bushing is coupled through being press-fitted to the rotation shaft;
- a rotor coupled to the bushing to rotate through interaction with the stator, wherein the rotor comprises a rotor yoke coupled to the bushing and a magnet coupled to the rotor yoke, and wherein the rotor yoke is coupled through adhesion to the bushing;
- and
- a clamp fixed to the rotor yoke, wherein the clamp is configured to elastically support a disk mounted on the rotor yoke,
- wherein the clamp is spaced from an upper surface and a lateral surface of the bushing,
- wherein the rotor yoke includes a first vertical portion faced to the bushing,
- wherein the first vertical portion has a first length in a vertical direction,
- wherein the bushing has a second length in the vertical direction, and
- wherein the first length is greater than the second length.
11 more elements
Dependencies are inferred from the claim text.