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Base plate, base unit, motor and disk drive apparatus

A disk drive device and base technology, applied in the fields of substrates, motors, disk drive devices, and base units, can solve problems such as increased vibration and noise, weakened substrate rigidity, data read and write errors, etc., and can suppress the axial direction. Thickness, the effect of suppressing the decrease in rigidity, and preventing the axial detachment

Inactive Publication Date: 2014-01-15
NIDEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, if the axial thickness of the substrate is thinned, the rigidity of the substrate will be weakened
If the rigidity of the substrate is weakened, the vibration and noise accompanying the motor drive will increase
In addition, the position of the disk becomes unstable, and data reading and writing errors may easily occur.

Method used

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  • Base plate, base unit, motor and disk drive apparatus
  • Base plate, base unit, motor and disk drive apparatus
  • Base plate, base unit, motor and disk drive apparatus

Examples

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Embodiment Construction

[0027] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In addition, in this application, the direction parallel to the central axis of the motor is called "axial direction", and the direction perpendicular to the central axis of the motor is called "radial direction". The direction of the arc is called "circumferential". In addition, in the present application, the shape and positional relationship of each part will be described with the axial direction as the up-down direction and the opposing substrate with the stator side as the upward direction. However, the definition of the up-down direction is not intended to limit the directions during manufacture and use of the substrate, base unit, motor, and disk drive device according to preferred embodiments of the present invention.

[0028] Also, the "parallel direction" in the present application includes substantially parallel directions. In addition, the "orthogo...

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Abstract

The invention relates to a base plate, base unit, motor and disk drive apparatus. A base plate of a disk drive apparatus includes a motor base disposed around a central axis and a base body portion extending radially outward of the motor base. The motor base is made of a metallic material of a first type. The base body portion is made of a metallic material of a second type. Thus, the axial thickness of a portion of the base plate close to the central axis can be significantly reduced and a reduction in the stiffness of the portion can be prevented. Further, the motor base includes a flange portion and a plastic deforming portion. The flange portion and the plastic deforming portion are respectively in contact with at least a portion of both axial end surfaces of an inner end portion of the base body portion. Thus, extraction of the motor base in the axial direction is prevented.

Description

technical field [0001] The invention relates to a substrate, a base unit, a motor and a disk drive device. Background technique [0002] Conventionally, disk drive devices such as hard disk drives are known. A motor for rotating the disk is mounted on the disk drive device. For example, Japanese Laid-Open Publication No. 2012-005339 describes a conventional disk drive device. The disk drive device of this publication has a base that supports the integral constituent elements of the motor (paragraph 0031, figure 1 ). [0003] In recent years, there has been an increasing demand for thin notebook computers and tablet computers. Therefore, the disk drives mounted in these computers are also required to be thinner than before. In order to reduce the thickness of the disk drive device, it is preferable to reduce the axial thickness of the substrate supporting the motor. In particular, motor components such as a stator and a hub need to be disposed around the central axis of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/02H02K5/16H02K21/22G11B19/20
CPCG11B19/2009G11B33/02
Inventor 巽昭生藤原隆石野孝幸井上清文弓立明宏
Owner NIDEC CORP
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