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US 7,402,928 B2Granted
Spindle motor
AssigneeLG Innotek Co., Ltd.
InventorSong Chung Hyun
Life of this patent
Estimating the term…
Abstract
Provided is a spindle motor including a rotor, a stator, and a base. The rotor includes a rotor yoke, a magnet, and a rotating shaft. The stator is disposed correspondingly to the rotor and includes a core and coils. The base includes a base plate for supporting the stator. The base plate is integrally formed with a housing. The housing has the core disposed at an exterior thereof and has a bearing for rotatably supporting the rotating shaft provided within. A thrust stopper for sealing the housing is fixed to a bottom of the housing.
Claims10
A spindle motor comprising:
- a rotor including a rotor yoke, a magnet, and a rotating shaft;
- a stator corresponding to the rotor and including a core and coils;
- a housing, the core being disposed at an exterior of the housing, the housing including a ledge, the ledge being an upper portion of the housing extending inwardly toward the rotating shaft;
- a base including a base plate for supporting the stator, wherein the base plate is integrally formed with the housing;
- a bearing provided in the housing for rotatably supporting the rotating shaft, and
- a thrust stopper for sealing the housing and being fixed to a bottom of the housing;
- and
- a washer located between the ledge and the bearing, the washer being stoppable by the ledge to restrain the rotating shaft from rising,
- wherein the rotating shaft has a fixing recess located around a circumference of the rotating shaft, and the washer surrounds the fixing recess, and
- wherein the bearing, the washer and the ledge are located on a same vertical plane parallel to the rotating shaft.
7 more elements
A spindle motor comprising:
- a rotor including a rotor yoke, a magnet, and a rotating shaft;
- a stator corresponding to the rotor and including a core and coils;
- a housing, the core being disposed at an exterior of the housing, the housing including a ledge, the ledge being an upper portion of the housing extending inwardly toward the rotating shaft;
- a base including a base plate for supporting the stator, wherein the base plate is integrally formed with the housing;
- a bearing provided in the housing for rotatably supporting the rotating shaft;
- a thrust stopper for sealing the housing and being fixed to a bottom of the housing;
- and
- a washer located between the ledge and the bearing, the washer being stoppable by the ledge to restrain the rotating shaft from rising and the bearing,
- wherein the base plate includes a first lower surface and a second lower surface being protruded from the first lower surface in upper direction and the thrust stopper includes a first lower surface and a second lower surface being protruded from the first lower surface in upper direction.
6 more elements
Dependencies are inferred from the claim text.