KR20120039314A - Base plate for hard disk drive, method for manufacturing the same and hard disk drive - Google Patents

Base plate for hard disk drive, method for manufacturing the same and hard disk drive Download PDF

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Publication number
KR20120039314A
KR20120039314A KR1020100100958A KR20100100958A KR20120039314A KR 20120039314 A KR20120039314 A KR 20120039314A KR 1020100100958 A KR1020100100958 A KR 1020100100958A KR 20100100958 A KR20100100958 A KR 20100100958A KR 20120039314 A KR20120039314 A KR 20120039314A
Authority
KR
South Korea
Prior art keywords
disk
base plate
hard disk
disk drive
vortex
Prior art date
Application number
KR1020100100958A
Other languages
Korean (ko)
Inventor
최태영
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 KR1020100100958A priority Critical patent/KR20120039314A/en
Publication of KR20120039314A publication Critical patent/KR20120039314A/en

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Classifications

    • 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
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/4806—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
    • 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 base plate for a hard disk drive, a manufacturing method thereof, and the hard disk drive are provided to form an eddy flow due to disk rotation during press or forge processes. CONSTITUTION: A disk is arranged on a disk arrangement unit(110). A head mounting unit(120) is formed on a lower part of the disk arrangement unit. A head driving unit(300) is arranged on the head mounting unit. The head driving unit provides driving power to a magnetic head. After the disk arrangement unit is punched, the punched part is lifted to form an eddy flow preventing wall(140). The eddy flow preventing wall forms a gap with an external outline of the disk. The eddy flow preventing wall suppresses an eddy flow due to the disk rotation.

Description

Base plate for hard disk drive, method for manufacturing the same and hard disk drive}

The present invention relates to a base plate for a hard disk drive and a hard disk drive including the same, and more particularly, to a base plate for a hard disk drive to improve performance by suppressing the eddy current caused by the rotation of the disk and includes the same To a hard disk drive.

A hard disk drive (HDD), which is one of information storage devices of a computer, is a device for reproducing data stored on a disk using a magnetic head or recording data on the disk.

In such a hard disk drive, a head drive unit, that is, a head stack assembly (HSA), is installed in a base plate to move a magnetic head on a 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.

Conventionally, in manufacturing a base plate provided in a hard disk drive, it is produced by a post-processing method in which aluminum (Al) is die-casted and then burrs generated by die-casting are removed. Doing.

However, the conventional die-casting method involves injecting forging aluminum (Al) in a molten state to form a shape, which requires a high temperature and high pressure, and requires a lot of energy for the process, and also increases processing time. There is a problem.

In addition, there is a limit in manufacturing a large number of base plates in one mold in terms of the die-casting die life, and the base plate by the die-casting process has a problem of poor dimensional accuracy. .

So, in order to solve the problem of the die-casting process, the base plate was manufactured by using a press or forging method, but when the press or forging method has a basically uniform thickness, there is a problem in implementing a detailed shape. have.

Therefore, there is an urgent need to study that there is no problem in realizing details while using a press or forging method.

SUMMARY OF THE INVENTION An object of the present invention is to provide a base plate for a hard disk drive and a hard disk drive including the same, which can effectively implement a vortex blocking wall that suppresses the generation of vortices generated when the disk is rotated in fine detail while using a press or forging method. It aims to do it.

A base plate for a hard disk drive according to an embodiment of the present invention includes a disk arranging unit in which a disk storing data is disposed; A head seating portion formed under the disk placement portion and having a head driving portion for providing a driving force to a magnetic head for reproducing data stored in the disk; And a vortex blocking wall which is formed vertically after punching the disk arranging unit, and forms vortices with an outer diameter of the disk to suppress vortex generation generated when the disk is rotated.

The head seating portion of the base plate for a hard disk drive according to an embodiment of the present invention is formed by stepping a portion of the disk arrangement portion, the vortex blocking wall is formed vertically after punching a portion of the disk arrangement portion It may be characterized by.

The vortex blocking wall of the base plate for a hard disk drive according to an embodiment of the present invention may have the same radius of curvature as the outer diameter of the disk.

The base plate for a hard disk drive according to an embodiment of the present invention may further include a side wall portion formed on the outer side of the disk arrangement to surround the outer diameter of the disk.

The side wall portion of the base plate for a hard disk drive according to an embodiment of the present invention may have the same radius of curvature as the outer diameter of the disk.

The space between the vortex barrier wall and the side wall portion of the base plate for a hard disk drive according to an embodiment of the present invention may be the same.

The base plate for a hard disk drive according to an embodiment of the present invention may further include a sealing member for sealing the bottom surface of the punched disc arrangement.

According to another aspect of the present invention, there is provided a method of manufacturing a base plate for a hard disk drive, the method including: forming a disk arranging portion in which a disk is disposed and a head seating portion in which a head driving portion is disposed below the disk disposing portion; Punching the disk arrangement to form a punching unit; And forming a vortex blocking wall that vertically raises the punching part to form a gap with an outer diameter of the disk, and suppresses vortex generation generated when the disk is rotated.

Forming the vortex blocking wall of the method for manufacturing a hard disk drive base plate according to another embodiment of the present invention may be characterized in that the vortex blocking wall has a radius of curvature equal to the outer diameter of the disk. have.

The step of forming the disk mounting portion and the head seating portion of the base plate manufacturing method for a hard disk drive according to another embodiment of the present invention is formed on the outer side of the disk mounting portion to form a side wall portion surrounding the outer diameter of the disk It may be characterized by including the step.

The side wall portion of the base plate manufacturing method for a hard disk drive according to another embodiment of the present invention has the same radius of curvature as the disk, and the vortex blocking wall and the space between the side wall portion and the disk are formed to be equal to each other. It may be characterized by.

The method of manufacturing a base plate for a hard disk drive according to another embodiment of the present invention may further include sealing the punched disc arrangement.

Hard disk drive according to another embodiment of the present invention is a hard disk drive base plate; A spindle motor coupled to the base plate for the hard disk drive to rotate the disk; A magnetic head for recording and reproducing data of the disc; And a head driver for moving the magnetic head to a predetermined position on the disk.

According to the base plate for a hard disk drive and the hard disk drive including the same according to the present invention, it is possible to form a vortex blocking wall that prevents vortices generated when the disk is rotated even by a press or forging process.

In addition, since the base plate for the hard disk drive may be manufactured by a forging or pressing process, process time and energy consumption may be minimized, and as a result, production capacity may be improved.

1 is a schematic plan view showing a hard disk drive according to an embodiment of the present invention.
Figure 2 is a schematic exploded perspective view of a hard disk drive according to an embodiment of the present invention.
3A to 3C are schematic perspective views illustrating a method of manufacturing a base plate for a hard disk drive provided in a hard disk drive 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. However, the spirit of the present invention is not limited to the embodiments presented, and those skilled in the art who understand the spirit of the present invention may deteriorate other inventions or the present invention by adding, modifying, or deleting other elements within the scope of the same idea. Other embodiments that fall within the scope of the inventive concept may be readily proposed, but they will also be included within the scope of the inventive concept.

In addition, the components with the same functions within the scope of the same idea shown in the drawings of each embodiment will be described using the same reference numerals.

1 is a schematic plan view showing a hard disk drive according to an embodiment of the present invention, Figure 2 is a schematic exploded perspective view showing a hard disk drive according to an embodiment of the present invention.

1 and 2, a hard disk drive 500 according to an embodiment of the present invention may include a base plate 100 (hereinafter, referred to as a base plate), a spindle motor 200, and a head driver 300 for a hard disk drive. It may include.

The base plate 100 may refer to a housing that forms an appearance together with the cover plate 190 in the hard disk drive 500 according to an embodiment of the present invention, and includes a disk arranging unit 110 and a head seating unit. 120 and the vortex blocking wall 140 may be included.

Here, the base plate 100 and the cover plate 190 may be coupled by coupling a plurality of screws 195 to the holes 112 formed in the base plate 100.

The disk disposition unit 110 is a portion in which the disk 400 coupled to the spindle motor 200, which will be described later, is disposed, and the disk 400 storing data may be positioned on the upper portion of the disk disposition unit 110.

The disc arrangement unit 110 may be formed in a circular shape as a whole to correspond to the shape of the disc 400, a portion of the disc arrangement unit 110 is formed stepped so that the head drive unit 300 to be described later is disposed The head seating unit 120 may be configured.

Here, the reason why the head seating unit 120 is located below the disk placing unit 110 is that the head driving unit 300 repeatedly rotates so that the data of the disk 400 can be reproduced and recorded. It is for.

That is, the head driver 300 provides a driving force to a magnetic head (not shown) so that the magnetic head (not shown) is inserted between the disks 400 so that a space for reproducing and recording data of the disk 400 is provided. To secure.

Vortex prevention wall 140 is a wall surrounding a portion of the outer diameter of the disk 400, the hard disk drive 500 according to an embodiment of the present invention to suppress the vortex generated when the disk 400 is rotated It may be a configuration for improving the performance of.

The vortex barrier wall 140 may have the same radius of curvature as the inner circumferential surface of the side wall portion 130 forming the outer wall of the base plate 100, and as a result, may be the same as the radius of curvature of the disk 400.

In addition, the vortex barrier wall 140 may form a gap with the outer diameter of the disk 400, and may be equal to the distance between the side wall portion 130 and the disk 400.

Here, the side wall portion 130 is configured to surround most of the outer diameter of the disk 400, the vortex blocking wall 140 may mean an extension of the side wall portion 130.

However, the vortex blocking wall 140 may not be manufactured at the same time as the side wall portion 130, and the method of manufacturing the vortex blocking wall 140 will be described later in detail with reference to FIG. 3.

The spindle motor 200 is for rotating the disk 400 and is fixedly installed at the center of the disk arranging unit 110. The disk 400 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, the clamp 210 for fixing the disk 400 to the spindle motor 200 firmly on the upper end of the spindle motor 200 may be fastened by a screw 215.

In addition, although FIG. 1 and FIG. 2 show a configuration in which one disk is mounted on the spindle motor 200, this is merely an example, and the spindle motor 200 may be equipped with one or more disks 400. Can be. When the plurality of disks 400 are mounted in this way, a ring-shaped spacer for maintaining the gap between the disks 400 may be disposed between the disks 400.

The head driver 300 is called a head stack assembly (HSA), and mounts a magnetic head (not shown) and moves the magnetic head (not shown) to a predetermined position to record data on the disk 400, or It may be configured to read data recorded on the disk 400.

The head driving unit 300 may include a voice coil motor (VCM) 340, a swing arm 320, and a suspension 330, and the suspension 330 may be a front end of the swing arm 320. It can be fixedly coupled to.

In addition, the head driving unit 300 may be rotatably coupled around the pivot shaft 150 of the head seating unit 110 of the base plate 100, the disk 400 is the base plate 100 When rotating at a high speed in the upper portion of the disk arrangement 110, the magnetic head (not shown) is to perform the function of reproducing or recording data on the recording surface of the disk 400.

Here, the voice coil motor (VCM) is configured to provide rotational power to the head driver 300, the voice coil motor (VCM) is disposed on the upper and lower side of the VCM coil 310 of the head driver 300. It can be provided with a magnet (not shown).

The voice coil motor (VCM, 340) is controlled by a servo control system, by the interaction of the current input by the VCM coil 310 and the magnetic field formed by the magnet (not shown) to the left hand law of Fleming The head driver 300 is rotated about the pivot shaft 150 in the direction.

Here, an operation start command of the hard disk drive 500 according to an embodiment of the present invention is input, and the disk 400 starts to rotate, and the voice coil motor (VCM) 340 counterclockwise swings the swing arm 320. Direction to move the magnetic head (not shown) over the recording surface of the disk 400.

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 340 rotates the swing arm 320 in a clockwise direction so that a magnetic head (not shown) is provided. Leaves disk 400.

A magnetic head (not shown) off the recording surface of the disk 400 is parked by a lamp 360 provided outside the disk 400.

In addition, at one corner of the base plate 100, a flexible printed circuit 350 connected to the head driving unit 300 is connected to a main circuit board (not shown) disposed under the base plate 100. FPC bracket 370 is provided to make.

3A to 3C are schematic perspective views illustrating a method of manufacturing a base plate for a hard disk drive provided in a hard disk drive according to an embodiment of the present invention.

Referring to Figure 3 (a), the hard disk drive base plate 100 provided in the hard disk drive 500 according to an embodiment of the present invention is a plate, that is, cold rolled steel plate (SPCC, SPCE, etc.) Alternatively, after the basic configuration of the base plate 100 is manufactured using a forging process, the overall shape is manufactured through a post process such as bending and cutting.

In other words, the disk mounting unit 110, the head seating portion 120 disposed below the disk mounting portion 110 and the primary side having a side wall portion 130 surrounding most of the outer diameter of the disk 400 The base plate 100 is to be manufactured.

Here, the press or forging method of the present invention which improves the point that the energy consumption and the processing time are long in the conventional die-casting method is very effective in terms of process efficiency, but the press or forging method Due to the nature of the above-described protruding portion, such as the vortex barrier wall 140 has a limit in manufacturing.

Therefore, to form the punching portion 145 by punching a part of the disk arrangement 110 corresponding to the position where the vortex blocking wall 140 is to be formed to form the vortex blocking wall 140. can do.

The punching unit 145 may correspond to a part of the disc arrangement unit 110, and may be formed by cutting other portions except the folding portion by using a punching machine or the like.

In addition, the size of the punching portion 145 may be the same size and radius of curvature in consideration of the height and the radius of curvature of the side wall portion 130 when folded up, the side wall portion 130 and the disk 400 It can be determined in advance to be equal to the interval between.

Referring to FIG. 3B, after the primary base plate 100 is formed, the vortex preventing wall 140 may be formed by vertically raising the punching part 145 formed on the disk seating part 110.

The vortex barrier wall 140 may be equal to the outer diameter of the disk 400 and the radius of curvature of the side wall part 130 by the punching part 145 set in advance, and the distance from the disk 400 is also equal to the side wall part ( It may be formed to be equal to the gap between the 130 and the disk 400.

Accordingly, the secondary base plate 100 having the vortex blocking wall 140 is manufactured.

The vortex barrier wall 140 may be a wall surrounding a portion of the outer diameter of the disk 400, to suppress the vortices generated when the disk 400 rotates, the hard disk drive 500 according to an embodiment of the present invention Can improve the performance.

Referring to FIG. 3C, the vortex preventing wall 140 is formed by vertically raising the punching portion 145 formed on the disk arrangement 110, and corresponds to the punching portion 145 at the punching portion 145. A hole of a size can be formed.

Since the hole is to be sealed to improve the performance of the hard disk drive 500 according to an embodiment of the present invention, the hole may be sealed by the sealing member 410.

That is, the sealing member 410 covering the hole may be coupled from the bottom of the base plate 100, and a member such as a tape may be used.

Therefore, the base plate 100 is completed by sealing the hole using the sealing member 410, and consequently, the vortex preventing wall, which is a minute part using the punching part 145, is formed by using a press and forging method. 140 may be provided, and the base plate 100 may be completed to ensure airtightness.

Through the above embodiment, it is possible to manufacture the base plate 100 for the hard disk drive by using a press or forging method, the disk vortex barrier wall 140 for suppressing the vortex generated when the disk 400 is rotated By punching out a portion of the placement unit 110 and forming it vertically, the base plate 100 may be manufactured in which the problem of the press or forging method is improved.

In addition, since the base plate 100 may be manufactured by a press or forging process, process time and energy consumption may be minimized, and as a result, production capacity may be maximized.

100: base plate for the hard disk drive 110: disk arrangement
120: head seating portion 130: side wall
140: vortex barrier 145: punching part
150: pivot axis 200: spindle motor
210: clamp 300: head drive portion
310: VCM coil 340: voice coil motor
400: disk 410: sealing member
500: hard disk drive

Claims (13)

A disk arranging unit in which a disk storing data is disposed;
A head seating portion formed under the disk placement portion and having a head driving portion for providing a driving force to a magnetic head for reproducing data stored in the disk; And
And a vortex blocking wall formed after raising the disk arrangement portion and vertically formed to form a gap with the outer diameter of the disk to suppress vortex generation generated when the disk is rotated.
The method of claim 1,
The head seating portion is formed by stepping a portion of the disk arrangement portion,
And the vortex barrier wall is formed vertically after punching a portion of the disk arrangement.
The method of claim 1,
And the vortex barrier wall has a radius of curvature equal to the outer diameter of the disk.
The method of claim 1,
And a side wall portion formed outside the disk arrangement portion and surrounding the outer diameter of the disk.
The method of claim 4, wherein
And the side wall portion has a radius of curvature equal to the outer diameter of the disk.
The method of claim 4, wherein
The base plate for the hard disk drive, characterized in that the space between the vortex blocking wall and the side wall portion and the disk are equal to each other.
The method of claim 1,
The base plate for a hard disk drive further comprising a sealing member for sealing the bottom surface of the disk arrangement.
Forming a disk arranging portion in which a disk is disposed and a head seating portion in which a head driving portion is disposed below the disk arranging portion;
Punching the disk arrangement to form a punching unit; And
And forming a vortex blocking wall that vertically raises the punching part to form a gap with the outer diameter of the disk, and suppresses vortex generation generated when the disk is rotated.
The method of claim 8,
The forming of the vortex blocking wall may include forming the vortex blocking wall to have the same radius of curvature as the outer diameter of the disk.
The method of claim 8,
Forming the disk mounting portion and the head seating portion is a base plate manufacturing method for a hard disk drive comprising the step of forming a side wall portion formed on the outside of the disk mounting portion surrounding the outer diameter of the disk.
The method of claim 10,
The side wall portion has the same radius of curvature as the disk,
The space between the vortex barrier and the side wall portion and the disk are formed to be equal to each other, the base plate manufacturing method for a hard disk drive.
The method of claim 8,
Sealing the punched out disk arrangement; further comprising a base plate manufacturing method for a hard disk drive.
A base plate for a hard disk drive according to any one of claims 1 to 7;
A spindle motor coupled to the base plate for the hard disk drive to rotate the disk;
A magnetic head for recording and reproducing data of the disc; And
And a head driver for moving the magnetic head to a predetermined position on the disk.
KR1020100100958A 2010-10-15 2010-10-15 Base plate for hard disk drive, method for manufacturing the same and hard disk drive KR20120039314A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100100958A KR20120039314A (en) 2010-10-15 2010-10-15 Base plate for hard disk drive, method for manufacturing the same and hard disk drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100100958A KR20120039314A (en) 2010-10-15 2010-10-15 Base plate for hard disk drive, method for manufacturing the same and hard disk drive

Publications (1)

Publication Number Publication Date
KR20120039314A true KR20120039314A (en) 2012-04-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100100958A KR20120039314A (en) 2010-10-15 2010-10-15 Base plate for hard disk drive, method for manufacturing the same and hard disk drive

Country Status (1)

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