Motor and disk drive apparatus

Patent metadata

Field	Value
Publication number	US-9520754-B2
Application number	US-201414220506-A
Country	US
Kind code	B2
Filing date	Mar 20, 2014
Priority date	Sep 28, 2012
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

A motor for use in a disk drive apparatus includes a bearing, a rotary unit, a stator, a thin flat base member, and a cylindrical holder extending in an axial direction. The base member includes a first through-hole, a peripheral edge portion, and a thin portion. The thin portion is located radially outward of the peripheral edge portion. The thin portion has an axial thickness smaller than an axial thickness of the peripheral edge portion. The holder includes a first protrusion portion and a second protrusion portion. The first protrusion portion extends radially outward and is located axially above the peripheral edge portion. The second protrusion portion extends radially outward and is located axially below the peripheral edge portion. The bearing is located inside the holder. A stator core is located radially outside the holder and axially above the thin portion.

First claim

What is claimed is:

1. A motor, comprising:
a bearing;
a rotary unit connected to the bearing and configured to rotate about a center axis;
a stator including a stator core and at least one coil wound around the stator core;
a thin flat base member; and
a cylindrical holder extending in an axial direction; wherein
the base member includes a first through-hole extending in the axial direction, a peripheral edge portion extending radially outward from the first through-hol…

Assignees

• Nidec Corp

Inventors

• Matsumoto Takuro
• Yawata Atsushi

Classifications

• H02K3/522

  Electricity · mapped topic

• G11B19/2009

  Physics · mapped topic

• H02K1/187 Primary

  Electricity · mapped topic

• H02K5/16 Primary

  Electricity · mapped topic