Strength-reinforced spindle motor

摘要

A spindle motor includes a bearing assembly, a base plate, a stator, a rotation shaft, a rotor, an adhesive member arranged at a space formed by the bearing assembly and a burring unit and a strength reinforcement member including a body fixed to a bottom surface of the base plate.

主权项

1. A spindle motor, comprising:
a bearing assembly including a bearing housing and a bearing accommodated in the bearing housing and formed with a rotation shaft hole, wherein the bearing housing includes a first floor plate having a doughnut shape, a first lateral plate integrally formed with the first floor plate and extended from an outside edge of the first floor plate to a direction facing an upper side of the motor, a second lateral plate integrally formed with the first floor plate and extended from an inside edge of the first floor plate to a direction facing a bottom side of the motor, and a second floor plate integrally formed with the second lateral plate and extended from the second lateral plate such that it is arranged in parallel with the first floor plate; a base plate integrally formed with a burring unit, wherein a part of the burring unit is coupled to a part of a periphery of the first lateral plate; a stator including a core coupled to the periphery of the first lateral plate and a coil wound on the core; a rotation shaft inserted into the rotation shaft hole of the bearing; a rotor including a yoke coupled to the rotation shaft and a magnet arranged on the yoke to face the core; a strength reinforcement member including a body fixed to a bottom surface of the base plate, and a strength reinforcement unit extended from the body; a first recess formed by the first floor plate, the second lateral plate, and the burring unit; and an adhesive member filling the first recess and formed from the first floor plate to a level of a bottom surface of the body; wherein the adhesive member includes a second recess, and a portion of the second recess faces downward away from the first floor plate; and wherein the strength reinforcement unit fills the second recess.