Spindle motor, hard disk drive device, and method of manufacturing spindle motor
AssigneeMINEBEA MITSUMI Inc.
InventorsTadashi AKAHORI, Akihiko SUZUKI, Makoto CHONAN
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Abstract
A spindle motor according to an embodiment includes a base plate, a rotor magnet fixed to a rotor assembly positioned at one surface side of the base plate and a magnetic attraction plate fixed at the one surface side of the base plate so as to face the rotor magnet. An opposite area of the base plate facing the magnetic attraction plate includes a coated area covered by an epoxy electric discharge coating film, and the magnetic attraction plate is fixed to the opposite area via at least one of an epoxy adhesive and an acrylic adhesive.
Claims10
A spindle motor including:
- a base plate;
- a rotor magnet fixed to a rotor assembly positioned at one surface side of the base plate;
- and
- a magnetic attraction plate fixed at the one surface side of the base plate so as face the rotor magnet;
- wherein
- an opposite area of the base plate facing the magnetic attraction plate includes a coated area covered by an epoxy electric discharge coating film, and the magnetic attraction plate is fixed to the opposite area via at least one of an epoxy adhesive and an acrylic adhesive.
A method of manufacturing a spindle motor comprising:
- a base plate;
- a rotor magnet fixed to a rotor assembly positioned at one surface side of the base plate;
- and
- a magnetic attraction plate fixed at the one surface side of the base plate so as to face the rotor magnet, the method including:
- forming a coated area covered by an epoxy electric discharge coating film at the one surface side of the base plate;
- and
- fixing the magnetic attraction plate to an opposite area of the base plate via at least one of an epoxy adhesive and an acrylic adhesive, the opposite area facing the magnetic attraction plate and including the coated area.
Dependencies are inferred from the claim text.