Single body type bracket and disk drive device having the same
Disclosed is a disk drive device including a spindle motor portion including a stator wound with a coil, a rotor rotating in reaction to the stator, and a rotation shaft that is a rotational center of the rotor; a stepping motor portion including a lead screw to move an optical pick-up device; and a single body type bracket that has the spindle motor portion and stepping motor portion engaged thereto.
1. A disk drive device, comprising:
a spindle motor portion for rotating an optical disk;
a stepping motor portion including a lead screw to move an optical pick-up device that is moved to a direction of radius of the optical disk; and
a single body type bracket that is integrally formed with the spindle motor portion and the stepping motor portion,
wherein the single body type bracket includes a first bent portion that is a portion of the single body type bracket bent in order to rotatably support one end of the lead screw, a second bent portion that faces the first bent portion along an axial direction of the lead screw and supports a side of the stepping motor portion, and a connecting portion that connects the first bent portion to the second bent portion,
wherein the single body type bracket has a hole to fix the spindle motor portion thereto, and
wherein the single body type bracket is attached with a driving substrate mounted with the spindle motor portion and a circuit component that drives the spindle motor portion and the stepping motor portion, and the driving substrate is interposed between the spindle motor portion and the stepping motor portion.
2. The disk drive device according to claim 1 , wherein a burring portion for fixing the spindle motor portion is formed at an area corresponding to the hole in the single body type bracket.
3. The disk drive device according to claim 1 , wherein each of the first and second bent portions is formed with a through hole through which the lead screw passes.
4. The disk drive device according to claim 1 , wherein the through hole includes a round through hole or an oblong hole for adjusting a height of the lead screw.
5. The disk drive device according to claim 1 , wherein the single body type bracket includes a metal substrate.
6. The disk drive device according to claim 1 , wherein the single body type bracket includes a printed circuit board.
7. The disk drive device according to claim 1 , wherein the single body type bracket takes the shape of a letter ‘L’ when viewed on a plane.
8. The disk drive device according to claim 1 , wherein the spindle motor portion includes a bearing assembly in which a bearing is accommodated, a stator fixed at a periphery of a bearing housing, a rotation shall rotatably coupled to the bearing, and a rotor coupled to the rotation shaft.
9. The disk drive device according to claim 1 , wherein the stepping motor portion includes a rotor attached at a periphery thereof with a magnet and formed at a portion thereof with the lead screw, a stator wrapping the rotor and wound with a coil, and a housing accommodating the stator.