KR20130059591A - Base assembly for motor and hard disk drive including the same - Google Patents

Base assembly for motor and hard disk drive including the same Download PDF

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Publication number
KR20130059591A
KR20130059591A KR1020110125637A KR20110125637A KR20130059591A KR 20130059591 A KR20130059591 A KR 20130059591A KR 1020110125637 A KR1020110125637 A KR 1020110125637A KR 20110125637 A KR20110125637 A KR 20110125637A KR 20130059591 A KR20130059591 A KR 20130059591A
Authority
KR
South Korea
Prior art keywords
base
motor
assembly
protrusion
hsa
Prior art date
Application number
KR1020110125637A
Other languages
Korean (ko)
Inventor
이현철
Original Assignee
삼성전기주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전기주식회사 filed Critical 삼성전기주식회사
Priority to KR1020110125637A priority Critical patent/KR20130059591A/en
Publication of KR20130059591A publication Critical patent/KR20130059591A/en

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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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/0008—Magnetic conditionning of heads, e.g. biasing
    • 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

Abstract

PURPOSE: A motor base assembly and an HDD(Hard Disk Drive) are provided to maximize performance and a lifespan by improving a sealing function of the HDD. CONSTITUTION: A base assembly(100) includes a base(110), a buffer unit(120), and a pressurization unit(130). The base is formed by press processing and includes a settlement protrusion unit(115) for connection with the buffer unit. The settlement protrusion unit is protruded to other side by denting a predetermined area of one side. The buffer unit is connected to the settlement protrusion unit in order to reduce impact by touching an HAS(Head Stack Assembly)(300) when the head stack assembly is rotated. The pressurization unit is protruded to the other side by pressurizing the buffer unit and denting the predetermined area of the one side.

Description

Base assembly for motor and hard disk drive including the same

The present invention relates to a base assembly for a motor and a hard disk drive including the same, and more particularly, to a base assembly for a motor and a hard disk drive including the same in which the coupling structure of the base and the buffer part is improved.

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, a base is provided with a head drive unit, that is, a head stack assembly (HSA), which allows a magnetic head to be moved on a disc. It performs its function while moving to the desired position.

Conventionally, in manufacturing a base provided in a hard disk drive, aluminum (Al) is produced by a post-processing method that die-casting aluminum and then remove burrs generated by die-casting. have.

However, the conventional die casting method requires a high temperature and a high pressure to require a large amount of energy in the process because the forging aluminum (Al) is injected in a molten state to form a shape, .

In addition, there is a limitation in manufacturing a large number of bases in one mold in terms of the life of the die-casting die, and the base by the die-casting process has a problem that the dimensional accuracy is not good.

So, in order to solve the problem of the die-casting process, the base was manufactured using the press method, but in the case of the press method, the base material has a uniform thickness by the process of pressurizing and bending the plate. There is a limit.

Therefore, when fastening the components for driving the hard disk drive to the base manufactured by the press method, problems may occur in the implementation of the fastening part, even if the fastening part is implemented, the inside of the hard disk drive is completely sealed by the fastening part. It should not be affected.

In addition, when a plurality of fastening portions are to be formed adjacent to each other for fastening with a component for driving a hard disk drive, there is a problem that it is very difficult to form the plurality of fastening portions as described above in the base manufactured by the press method.

Therefore, there is an urgent need to research to manufacture an improved hard disk drive by overcoming the limitation of having a uniform thickness even if the base is manufactured by a press method.

SUMMARY OF THE INVENTION An object of the present invention includes a base assembly for a motor, which facilitates the fastening between a base manufactured by press working and a shock absorbing part that performs a shock absorbing function of a head stack assembly (HSA), thereby improving performance and life. It is to provide a hard disk drive.

The base assembly for a motor according to an embodiment of the present invention is formed by a press working, the base having a mounting protrusion protruding to the other surface by recessing a predetermined region of one surface; A buffer unit coupled to the seating protrusion so as to reduce impact by contacting the head stack assembly HSA when the head stack assembly HSA is coupled to the base; And a pressing unit having a pressing protrusion protruding to the other surface by recessing a predetermined region of one surface to press the buffer unit.

The shock absorbing portion of the base assembly for a motor according to an embodiment of the present invention may include a pressure receiving portion and a seating accommodation portion into which the pressure protrusion and the seating protrusion are respectively inserted.

The seating receiving portion and the pressurizing receiving portion of the base assembly for a motor according to an embodiment of the present invention may be formed in communication with each other.

At least one of the seating protrusion and the pressure protrusion of the base assembly for a motor according to an embodiment of the present invention may have a dimple shape.

The pressing portion of the base assembly for the motor according to an embodiment of the present invention may be a yoke for increasing the magnetic flux density of the magnet provided for driving the head stack assembly (HSA).

Hard disk drive according to another embodiment of the present invention is a motor base assembly; A spindle motor coupled to the base to rotate the disk; And a head stack assembly (HSA) for moving a magnetic head for recording and reproducing data of the disk to a predetermined position on the disk.

According to the base assembly for a motor and the hard disk drive including the same according to the present invention, it is possible to make the coupling between the base and the shock absorbing part manufactured by press working simple and robust.

In addition, the sealing capabilities of hard disk drives can be improved to maximize performance and lifespan.

1 is a schematic exploded perspective view showing a hard disk drive 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 assembly for a motor according to an embodiment of the present invention.
3 is a schematic enlarged cross-sectional view taken along line AA of FIG. 2.
Figure 4 is a schematic perspective view showing a shock absorbing portion provided in the base assembly for a motor according to another embodiment of the present invention.
FIG. 5 is an embodiment to which the shock absorbing part shown in FIG. 4 is applied, and a schematic enlarged cross-sectional view showing a coupling relationship of a base, a buffer part, and a pressing part according to the present invention (schematic enlarged cross-sectional view of a modification according to line AA of FIG. 2). .

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 exploded perspective view showing a hard disk drive 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 assembly for a motor according to an embodiment of the present invention; 3 is a schematic enlarged cross-sectional view taken along line AA of FIG. 2.

1 to 3, a base assembly 100 for a motor (hereinafter, referred to as a base assembly) according to an embodiment of the present invention includes a base assembly 100 including a base 110 and a spindle for rotating a disk D. It may include a motor 200 and a head stack assembly (HSA) 300.

The base assembly 100 may include a base 110, a buffer unit 120, and a pressing unit 130.

In the hard disk drive 500 according to the present invention, the base 110 may refer to a housing forming an appearance together with the cover 400, and the seating protrusion 115 for coupling with the buffer unit 120. It may be provided.

Here, the base 110 may manufacture the basic shape by press working, and then may manufacture the final shape of the base 110 through bending or cutting, which is additional processing.

That is, the base 110 according to an embodiment of the present invention is a post-processing method for removing burrs generated by die-casting after die-casting of aluminum (Al). Unlike produced by, cold rolled steel sheet (SPCC, SPCE, etc.), hot rolled steel sheet, stainless steel or lightweight alloy steel sheet such as boron or magnesium alloy can be produced by a single process or additional processing by press working.

Therefore, since the base 110 according to the embodiment of the present invention can be manufactured by press working, the process time and energy consumption can be minimized, resulting in improved production capacity.

Here, the base 110 may provide an inner space, and the inner space may mean a space in which the spindle motor 200 and the head stack assembly HSA 300 are disposed.

On the other hand, the base 110 has at least one seating protrusion for coupling with the buffer 120 to reduce the impact by contacting the head stack assembly (HSA, 300) when the head stack assembly (HSA, 300) is rotated ( 115).

The seating protrusion 115 may be formed by protruding a predetermined area of the bottom surface, which is one surface of the base 110, to protrude in the upper surface direction, which is the other surface, and may have a kind of dimple shape.

Here, the seating protrusion 115 may be inserted into the seating receiving portion 122 provided in the buffer portion 120, the pressing protrusion 135 formed in the pressing portion 130 is in the buffer portion 120 The buffer part 120 may be stably fixed between the base 110 and the pressure part 130 by being inserted into the pressure accommodating part 124 provided.

The seating accommodation part 122 and the pressure receiving part 124 may have shapes corresponding to the shape of the seating protrusion 115 and the pressure protrusion 135, but are not necessarily limited thereto. .

A detailed coupling method between the buffer unit 120, the base 110, and the pressing unit 130 will be described with reference to the buffer unit 120.

The buffer unit 120 is a component for minimizing the amount of impact when the head stack assembly (HSA) 300 is rotated or when an external shock is applied, and may be a rubber material having elasticity, and the head stack assembly (HSA) It may be disposed in the base 110 corresponding to the outer portion of the turning radius of 300.

Meanwhile, the head stack assembly HSA 300 will be described first for a detailed description of the shock absorbing unit 120. The head stack assembly HSA 300 has a magnetic head mounted thereon, and the magnetic head is positioned at a predetermined position. It may be configured to record the data on the disk (D) or to read the data recorded on the disk (D).

In addition, the head stack assembly HSA 300 moves the magnetic head to a predetermined position of the disk D by a voice coil motor VCM including a coil 310 and upper and lower magnets 320 and 330. You can.

The voice coil motor (VCM) is controlled by a servo control system, the current input by the coil 310 provided to the voice coil motor (VCM) and the magnetic fields formed by the upper and lower magnets (320, 330) By rotating the magnetic head about the pivot axis 117 in the direction according to the Fleming's left hand law.

Accordingly, the head stack assembly HSA 300 may rotate at a predetermined angle about the pivot shaft 117 by the voice coil motor VCM.

In this case, in order to maintain a constant rotation angle of the head stack assembly (HSA, 300), the buffer unit 120 may be coupled to the base 110 corresponding to the outside of the rotation range, and the head stack assembly (HSA, The rotation range of the head stack assembly HSA 300 may be determined by the 300 contacting the buffer 120.

That is, the shock absorbing part 120 that defines the rotation range of the head stack assembly HSA 300 absorbs the shock amount when the head stack assembly HSA 300 is in contact with the head stack assembly HSA 300. In order to reduce the pressure, and to secure the pivoting of the head stack assembly (HSA) 300, it should be firmly coupled to the base 110.

Here, in firmly coupling the buffer unit 120 to the base 110, the mounting protrusion 115 formed on the base 110 and the pressure protrusion 135 formed on the pressing unit 130 are used. Can be.

The pressing unit 130 may be a yoke 130 for fixing the magnet 320 provided to the voice coil motor VCM of the head stack assembly HSA 300 to the base 110. Specifically, the upper magnet 320 may be an upper yoke 130 for fixing to the base 110.

That is, the voice coil motor VCM of the head stack assembly HSA 300 may include a coil 310 and upper and lower magnets 320 and 330 disposed above and below the coil 310. The upper and lower magnets 320 and 330 may be coupled to the upper and lower yokes 130 and 330, respectively, to increase the magnetic flux density and to fix the base 110.

Here, the upper yoke 130 may be a pressing unit 130 for fixing the buffer unit 120 to the base 110, and is inserted into the pressure receiving unit 124 provided in the buffer unit 120. By providing the pressure protrusion 135, the buffer 120 may be stably fixed to the base 110.

The pressing protrusion 135 presses the buffer unit 120 to recess the predetermined area of the upper surface, which is one surface of the pressing unit 130, to fix the buffer unit 120 to the base 110. It may be formed to protrude in the bottom direction.

In addition, the pressure protrusion 135 may have a kind of dimple shape similar to the mounting protrusion 115 formed on the base 110.

Here, looking at the specific coupling method between the buffer unit 120, the base 110 and the pressing unit 130, first, the base of the upper yoke 130, the base 110 and the pressing unit 130 An external force is applied to a predetermined region to form a seating protrusion 115 and a pressure protrusion 135 that protrude in one direction.

 Subsequently, the seating accommodation part 122 provided on the buffer part 120 is matched with the seating protrusion part 115, and then the pressure protrusion part of the pressure part 130 is pressed against the pressure receiving part 124 of the buffer part 120. Match 135.

Accordingly, the seating protrusion 115, the seating receiving portion 122, the pressure protrusion 135, and the pressure receiving portion 124 coincide with each other and weld or press the upper yoke 130, which is the pressing portion 130. When the bonding or fixing to the base 110 by a separate fastening member, the buffer 120 may be firmly fixed to the base (110).

On the other hand, in the hard disk drive 500 according to the present invention, the disk D starts to rotate when an operation start command is input, and the voice coil motor VCM rotates the swing arm in a counterclockwise direction to rotate the magnetic head. Move on the recording surface of D).

On the contrary, when an operation stop command of the hard disk drive 500 according to an embodiment of the present invention is input, the voice coil motor VCM rotates the swing arm clockwise so that the magnetic head leaves the disk D. .

The magnetic head off the recording surface of the disk D is parked by a lamp 350 provided on the outside of the disk D.

Here, the lamp 350 can park the magnetic head and stably read the data of the disk D by allowing the magnetic head to be spaced apart by a predetermined interval when the magnetic head moves to the disk D.

The spindle motor 200 is for rotating the disk D, and is fixedly installed at the center of the base 110.

The disk D may be coupled to the spindle motor 200 and may have a recording surface on which data is recorded by rotating with the rotation of the spindle motor 200.

Here, a clamp 210 for fastening the disk D to the spindle motor 200 may be fastened to the upper end of the spindle motor 200 by a screw 220.

In addition, although FIG. 1 illustrates a configuration in which one disk D is mounted on the spindle motor 200, this is merely an example, and one or more disks D may be mounted on the spindle motor 200. Can be. When a plurality of disks (D) is mounted in this way, a ring-shaped spacer for maintaining the distance between the disks (D) may be disposed between the disks (D).

Figure 4 is a schematic perspective view showing a shock absorbing portion provided in the base assembly for a motor according to another embodiment of the present invention, Figure 5 is an embodiment applied to the shock absorbing portion shown in Figure 4, the base, the buffer according to the present invention And a schematic enlarged cross-sectional view (a schematic enlarged cross-sectional view of a modification according to the line AA of FIG. 2) showing the coupling relationship of the pressing portion.

4 and 5, the seating receiving part 142 and the pressure receiving part 144 formed in the buffer part 140 may be formed in communication with each other.

That is, the buffer unit 140 may be provided with a hole formed in communication with the upper surface and the lower surface in order to be fixed to the base 110, the pressing projection 135 of the pressing portion 130 is inserted into the upper side of the hole The mounting protrusion 115 of the base 110 may be inserted below the hole.

Accordingly, the seating protrusion 115 and the pressure protrusion 135 are matched to the hole formed by the seat receiving portion 142 and the pressure protrusion 144 communicating with each other, and the upper yoke 130 is the pressure portion 130. ) Is fixed to the base 110 by welding or bonding or a separate fastening member, the buffer 140 may be firmly fixed to the base (110).

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be apparent to those skilled in the art that such modifications or variations are within the scope of the appended claims.

100: base assembly for the motor 110: base
115: seating protrusions 120, 140: buffer
122, 142: seating portion 124, 144: pressure receiving portion
130: pressurizing part (upper yoke) 135: pressurizing protrusion
200: spindle motor 300: head stack assembly (HSA)
310: coil 320: upper magnet
330: lower magnet 340: lower yoke
400: cover 500: hard disk drive

Claims (6)

A base formed by press working, the base having recessed protrusions protruding from the other surface by recessing a predetermined area of one surface;
A buffer unit coupled to the seating protrusion so as to reduce impact by contacting the head stack assembly HSA when the head stack assembly HSA is coupled to the base; And
And a pressing unit having a pressing protrusion protruding to the other surface by recessing a predetermined region of one surface to press the buffer unit.
The method of claim 1,
The shock absorbing portion is a base assembly for a motor having a pressurizing receiving portion and a seating receiving portion into which the pressure protrusion and the seating protrusion are respectively inserted.
The method of claim 2,
The base assembly for the motor is formed in communication with the seating accommodation portion and the pressure receiving portion.
The method of claim 1,
At least one of the seating protrusion and the pressure protrusion is a dimple-shaped motor base assembly.
The method of claim 1,
The pressing unit is a base assembly for a motor is a yoke for increasing the magnetic flux density of the magnet provided for driving the head stack assembly (HSA).
A base assembly for a motor according to any one of claims 1 to 5;
A spindle motor coupled to the base to rotate the disk; And
And a head stack assembly (HSA) for moving a magnetic head for recording and reproducing data of the disk to a predetermined position on the disk.
KR1020110125637A 2011-11-29 2011-11-29 Base assembly for motor and hard disk drive including the same KR20130059591A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110125637A KR20130059591A (en) 2011-11-29 2011-11-29 Base assembly for motor and hard disk drive including the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110125637A KR20130059591A (en) 2011-11-29 2011-11-29 Base assembly for motor and hard disk drive including the same

Publications (1)

Publication Number Publication Date
KR20130059591A true KR20130059591A (en) 2013-06-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110125637A KR20130059591A (en) 2011-11-29 2011-11-29 Base assembly for motor and hard disk drive including the same

Country Status (1)

Country Link
KR (1) KR20130059591A (en)

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