KR20120125737A - Base assembly for motor and motor including the same - Google Patents
Base assembly for motor and motor including the same Download PDFInfo
- Publication number
- KR20120125737A KR20120125737A KR1020110043358A KR20110043358A KR20120125737A KR 20120125737 A KR20120125737 A KR 20120125737A KR 1020110043358 A KR1020110043358 A KR 1020110043358A KR 20110043358 A KR20110043358 A KR 20110043358A KR 20120125737 A KR20120125737 A KR 20120125737A
- Authority
- KR
- South Korea
- Prior art keywords
- motor
- pulling plate
- fixing part
- base assembly
- base member
- Prior art date
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Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
- G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2508—Magnetic discs
- G11B2220/2516—Hard disks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Motor base assembly according to an embodiment of the present invention includes a base member on which the shaft system of the motor is mounted; A pulling plate coupled to the base member to prevent over-injury of the rotating member of the motor; And a fixing part protruding from the base member to allow the pulling plate to be press-fitted.
Description
The present invention relates to a base assembly for a motor and a motor including the same, and more particularly, to a base assembly for a motor and a motor including the same to improve the performance of the pulling plate to improve performance.
A hard disk drive (HDD), which is one of information storage devices of a computer, is a device that reproduces data stored on a disk using a magnetic head or records data on a disk.
In such a hard disk drive, the base member is provided with a head drive unit, that is, a head stack assembly (HSA), to move the magnetic head on the disc, and the magnetic head rises a predetermined height from the recording surface of the disc by the head drive unit. It performs its function while moving to the desired position.
In addition, a hard disk drive requires a disk drive capable of driving a disk, and a small spindle motor is used for the disk drive.
The compact spindle motor has a rotating member and a fixing member, and the rotating member rotates around the fixing member, and requires a predetermined floating force for the rotation of the rotating member.
However, when a force greater than the flotation force necessary for rotation of the rotating member is generated, that is, an over-injury occurs, the rotating member does not rotate normally or is detached from the fixing member, resulting in a fatal result.
In order to solve this problem, a magnet mounted on the motor and a pulling plate acting on the attraction force are coupled to the base member to prevent over-injury of the rotating member. There was a problem of separation.
Therefore, there is an urgent need for a study of maximizing performance and lifespan by improving the pulling force of a pulling plate that prevents over-injury of a rotating member in a spindle motor.
It is an object of the present invention to provide a base assembly for a motor and a motor including the same to maximize the extraction force of the pulling plate to prevent over-injury of the rotating member to improve performance and life.
Motor base assembly according to an embodiment of the present invention includes a base member on which the shaft system of the motor is mounted; A pulling plate coupled to the base member to prevent over-injury of the rotating member of the motor; And a fixing part protruding from the base member to allow the pulling plate to be press-fitted.
At least one of the fixing part and the pulling plate of the base assembly for a motor according to an embodiment of the present invention may be continuously formed in the circumferential direction so as to correspond to a magnet that generates a rotational driving force of the motor.
The fixing part of the base assembly for a motor according to an embodiment of the present invention may be in contact with the inner surface and the outer surface of the pulling plate.
An inner space of the fixing part of the base assembly for a motor according to an embodiment of the present invention may have a width smaller than the width of the pulling plate so that the pulling plate is press-fitted and fixed.
The fixing part of the base assembly for a motor according to an embodiment of the present invention may be protruded to the upper side of the pulling plate after the pulling plate is fixed by pressing.
The fixing part protruding to the upper side of the pulling plate of the motor base assembly according to an embodiment of the present invention may be bent to the upper surface of the pulling plate to fix the pulling plate to press the upper surface of the pulling plate.
The fixing part protruding upward of the pulling plate of the base assembly for a motor according to an embodiment of the present invention may be caulked to fix the pulling plate.
Motor according to another embodiment of the present invention includes a base assembly for the motor; A core coupled to the base member, the core being wound to generate a rotational driving force; And a hub coupled to the shaft system and having a magnet facing the coil.
According to the motor base assembly and the motor including the same according to the present invention, the pulling force of the pulling plate is improved to prevent over-injury of the rotating member.
In addition, it is possible to improve the performance and life of the motor by improving the defects caused by the bond foreign matter, and to maximize the productivity by simplifying the assembly process of the pulling plate.
1 is a schematic cross-sectional view showing a motor including a base assembly for a motor according to an embodiment of the present invention.
Figure 2 is a schematic perspective view showing a base member provided in the base assembly for a motor according to an embodiment of the present invention.
3 is a schematic perspective view and a schematic cross-sectional view showing a pulling plate provided in the base assembly for a motor according to an embodiment of the present invention.
Figure 4 is a schematic cutaway perspective view showing a coupling process of the base assembly for the motor according to an embodiment of the present invention.
5 is a schematic enlarged cross-sectional view of FIG. 4A showing a caulking process after coupling of a base assembly for a motor according to an embodiment of the present invention.
Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept. Other embodiments falling within the scope of the inventive concept may readily be suggested, but are also considered to be within the scope of the present invention.
The same reference numerals are used to designate the same components in the same reference numerals in the drawings of the embodiments.
1 is a schematic cross-sectional view showing a motor including a base assembly for a motor according to an embodiment of the present invention.
Referring to FIG. 1, a
First, when defining the term for the direction, the axial direction refers to the up and down direction relative to the
The shaft system of the
Here, the
Here, the
The radial
However, the radial
Here, the
In addition, the oil is a gap between the
The
The
The
The
Here, the
The
In addition, the
In addition, the
That is, the
Shaft 120 and the
In this case, the
A coupling structure between the pulling
2 is a schematic perspective view showing a base member provided in the base assembly for a motor according to an embodiment of the present invention, Figure 3 shows a pulling plate provided in the base assembly for a motor according to an embodiment of the present invention Figure 4 is a schematic perspective view and a schematic cross-sectional view, Figure 4 is a schematic cutaway perspective view showing a coupling process of the base assembly for a motor according to an embodiment of the present invention.
Referring to FIG. 2, the
The
A
At least one
The
The fixing
That is, the fixing
This may improve the holding force of the pulling
Referring to FIG. 3, the pulling
Here, the pulling
Referring to FIG. 4, the annular pulled
In this case, the pulling
When the pulling
This will be described later with reference to FIG. 5.
Therefore, when the pulling
In addition, since the pulling
FIG. 5 is a schematic enlarged cross-sectional view of A of FIG. 4, illustrating a coking process after coupling of a base assembly for a motor according to an embodiment of the present disclosure.
Referring to FIG. 5, when the pulling
In this case, the end of the protruding fixing
In addition, an end of the protruding fixing
Therefore, the pulling
Through the above embodiment, the pulling
In addition, it is possible to improve the performance and life of the motor by improving the defects caused by the bond foreign matter, and to maximize the productivity by simplifying the assembly process of the pulling plate.
100: motor 110: base assembly for the motor
112: base member 113: fixed portion
113a:
114: pulling plate 116: coil
118: core 120: shaft
122: sleeve 130: hub
140: magnet
Claims (8)
A pulling plate coupled to the base member to prevent over-injury of the rotating member of the motor; And
And a fixing part protruding from the base member to press the pulling plate.
At least one of the fixing portion and the pulling plate is a motor base assembly that is continuously formed in the circumferential direction to correspond to the magnet for generating a rotational driving force of the motor.
And the fixing part is in contact with the inner and outer surfaces of the pulling plate.
The inner space of the fixing unit has a width less than the width of the pooling plate so that the pooling plate is pressed in and fixed.
The fixing part is a base assembly for a motor protruding to the upper side of the pulling plate after the pulling plate is fixed by pressing.
The fixing part protruding upward of the pulling plate is bent to the upper surface of the pulling plate to fix the pulling plate to press the upper surface of the pulling plate.
The fixing part protruding to the upper side of the pulling plate is a base assembly for a motor which is caulked to fix the pulling plate.
A core coupled to the base member, the core being wound to generate a rotational driving force; And
And a hub coupled to the shaft system and having a magnet facing the coil.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110043358A KR20120125737A (en) | 2011-05-09 | 2011-05-09 | Base assembly for motor and motor including the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110043358A KR20120125737A (en) | 2011-05-09 | 2011-05-09 | Base assembly for motor and motor including the same |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20120125737A true KR20120125737A (en) | 2012-11-19 |
Family
ID=47511239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020110043358A KR20120125737A (en) | 2011-05-09 | 2011-05-09 | Base assembly for motor and motor including the same |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20120125737A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20170039385A (en) * | 2015-10-01 | 2017-04-11 | 엘지이노텍 주식회사 | Sensing magnet assembly and Motor having the same |
-
2011
- 2011-05-09 KR KR1020110043358A patent/KR20120125737A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20170039385A (en) * | 2015-10-01 | 2017-04-11 | 엘지이노텍 주식회사 | Sensing magnet assembly and Motor having the same |
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