Disk drive using an airflow reduction plate and methods of manufacturing thereof

A disk drive,

• a base;
• a spindle motor coupled to the bottom of the base;
• a disk coupled to and rotated by a rotational shaft of the spindle motor;
• an airflow reduction plate coupled inside the base and positioned opposite to and away from a main plane of the disk;
• and
• a sidewall section inside the base which is positioned opposite to an outer edge of the disk and has a form along the outer edge of the disk,
• wherein a first gap between at least one half of a part positioned opposite to the sidewall section in an outer edge of the airflow reduction plate and the sidewall section is smaller than a second gap between the sidewall section and the outer edge of the disk;
• a mechanism for pushing the airflow reduction plate toward the sidewall section in a direction about perpendicular to and away from a rotational axis of the spindle;
• a first screw being a left-hand screw which penetrates a hole in a first tab formed on the outer edge of the airflow reduction plate in a direction normal to a main plane of the airflow reduction plate, wherein the first screw is inserted in and fastened to a first screw hole located beyond an outer dimension of the sidewall section inside the base in a direction from the disk toward the spindle motor;
• and
• a second screw penetrating a hole in a second tab formed on a right side of the first tab when viewed from the rotational shaft of the spindle motor on the outer edge of the airflow reduction plate in a direction normal to the main plane of the airflow reduction plate, wherein the second screw is inserted in and fastened to a second screw hole located beyond an outer dimension of the sidewall section inside the base in a direction from the disk toward the spindle motor,
• wherein the mechanism is positioned between the first screw and the hole in the first tab of the first screw and the second screw, and
• wherein the mechanism includes an elastic component to press the airflow reduction plate against the sidewall section which pushes the first tab via flattening out in a direction normal to a main axis of the first screw.

A disk drive, comprising:

• a base;
• a spindle motor coupled to a bottom of the base;
• a disk coupled to and rotated by a rotational shaft of the spindle motor;
• an airflow reduction plate which is coupled to an inside of the base and positioned opposite to and away from a main plane of the disk;
• a sidewall section inside the base which is opposite to an outer edge of the disk and has a form along the outer edge;
• and
• a mechanism for pressing an outer edge of the airflow reduction plate against the sidewall section in a direction about perpendicular to and away from a rotational axis of the spindle;
• a tab of the airflow reduction plate having a screw hole ;
• a screw penetrating the screw hole in a direction normal to a main plane of the airflow reduction plate inserted and fastened to a screw hole located outside the sidewall section inside the base in a direction from the disk toward the spindle motor;
• and
• the mechanism pushes the tab outward between the screw and the hole in the tab to press the airflow reduction plate against the sidewall section,
• wherein the mechanism includes an elastic component which is elastically deformed by being flattened out in the normal direction by the screw to pushing the tab.

A disk drive, comprising:

• a base;
• a spindle motor coupled to a bottom of the base;
• a disk coupled to and rotated by a rotational shaft of the spindle motor;
• an airflow reduction plate which is coupled to an inside of the base and positioned opposite to and away from a main plane of the disk;
• a sidewall section inside the base which is opposite to an outer edge of the disk and has a form along the outer edge;
• a mechanism for pressing an outer edge of the airflow reduction plate against the sidewall section in a direction about perpendicular to and away from a rotational axis of the spindle;
• a first screw penetrating a hole in a first tab formed on the outer edge of the airflow reduction plate in a direction normal to the main plane, and inserted in and fastened to a first screw hole located outside the sidewall section inside the base in a direction from the disk toward the spindle motor;
• and
• a second screw penetrating a hole in a second tab formed on the outer edge of the airflow reduction plate in a direction normal to the main plane, and inserted in and fastened to a second screw hole positioned beyond an outer dimension of the sidewall section inside the base in a direction from the disk toward the spindle motor,
• wherein a rightward or leftward rotational direction for tightening the second screw agree with a right or left location of the second screw with respect to the first screw when viewed from the rotational shaft of the spindle motor, and
• wherein the mechanism pushes the second tab via flattening out in a direction normal to a main axis of the second screw to press the airflow reduction plate against the sidewall section.