| 摘要 |
A hydrodynamic bearing is provided to prevent generation of negative pressure due to lack of fluid by supplying the fluid into a portion of the bearing in which the fluid is temporarily insufficient. A hydrodynamic bearing includes a rotor(120), a housing(130), and a stopper(140). The rotor rotates a recording medium. The rotor includes a mounting part(121), a shaft part(122), and a bearing(123). The recording medium is mounted on the mounting part. The shaft part axially supports the mounting part. The bearing surrounds the shaft part. The housing rotatably supports the rotor. The housing includes a lower support part(131), and side support parts(132). The lower support part supports lower parts of the shaft part and the bearing part. The side support parts support side surfaces of the bearing part. The stopper prevents separation of the rotor. |
