KR20160016259A - Base for motor and Hard disk drive including the sami - Google Patents

Base for motor and Hard disk drive including the sami Download PDF

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Publication number
KR20160016259A
KR20160016259A KR1020140099985A KR20140099985A KR20160016259A KR 20160016259 A KR20160016259 A KR 20160016259A KR 1020140099985 A KR1020140099985 A KR 1020140099985A KR 20140099985 A KR20140099985 A KR 20140099985A KR 20160016259 A KR20160016259 A KR 20160016259A
Authority
KR
South Korea
Prior art keywords
base
rib
base body
motor
substrate
Prior art date
Application number
KR1020140099985A
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 KR1020140099985A priority Critical patent/KR20160016259A/en
Publication of KR20160016259A publication Critical patent/KR20160016259A/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
    • 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
    • G11B5/54—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 with provision for moving the head into or out of its operative position or across tracks
    • 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

According to an embodiment of the present invention, a base assembly for a motor comprises: a base having a base body, in which a disc is arranged, and an external wall portion, which defines an outer side of the base body; and a substrate which is coupled to a lower portion of the base and on which a plurality of electronic components are separated from each other and mounted. A rib is installed in the base body wherein the rib is formed to protrude toward the substrate.

Description

Technical Field [0001] The present invention relates to a base assembly for a motor, and a hard disk drive including the base assembly.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] 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 having a rigidity and a hard disk drive including the same.

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 HSA (Head Stack Assembly), which allows the magnetic head to move on the disk, and the head drive unit drives the magnetic head It is possible to move to a desired position and perform its function.

Conventionally, in manufacturing a base provided in a hard disk drive, a base is manufactured by die-casting aluminum (Al) and then removing burrs generated by die casting.

However, the conventional die casting method requires a high temperature and a high pressure, requiring a lot of energy in the process, and the process time is also increased because the forging aluminum (Al) is injected in a molten state to form a shape .

Also, from the viewpoint of the life of the die casting mold, there are limitations in manufacturing a large number of bases with one mold, and there is also a problem that the die casting process has poor dimensional accuracy.

Therefore, in order to solve the problem of the die casting process, the base is manufactured using the press method. However, when the base is manufactured by the press method, there is a problem that the rigidity is basically weakened due to the characteristic of the process of bending and cutting the plate.

Further, in the case of increasing the thickness of the plate material in order to secure rigidity, it has been difficult to increase the weight of the base, make it smaller, and make it thinner.

Therefore, in the production of the base by press working, it is urgent to research to improve the performance and life span while securing the rigidity while reducing the weight.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a base assembly for a motor having ribs in a base body of a base assembly for a motor and being manufactured by press working while ensuring rigidity and a hard disk drive including the base assembly.

A base assembly for a motor according to an embodiment of the present invention includes a base having a base body on which a disk is disposed and an outer wall portion defining an outer side of the base body; And a substrate coupled to a lower portion of the base, the plurality of electronic components being mounted to be spaced apart from each other, and the base body may be provided with a rib protruding toward the substrate.

In the motor base assembly according to an embodiment of the present invention, the bottom surface of the rib may be provided between the bottom surface of the base body and the bottom surface of the outer wall portion.

In the base assembly for a motor according to an embodiment of the present invention, the ribs may be provided between the electronic parts.

In the base assembly for a motor according to an embodiment of the present invention, an inner space corresponding to the shape of the rib may be provided on the inner side of the rib.

In the base assembly for a motor according to an embodiment of the present invention, the ribs may be provided by a pressing process.

In the base assembly for a motor according to an embodiment of the present invention, the ribs may be arranged in a radial, spiral or herringbone shape from the center of the base body.

According to another aspect of the present invention, there is provided a base assembly for a motor, comprising: a base having a base body on which a disk is disposed and an outer wall portion defining an outer side of the base body; And a base coupled to a lower portion of the base and having a rib insertion hole, wherein the base body is provided with a rib projected to be inserted and fixed into the rib insertion hole.

In the base assembly for a motor according to another embodiment of the present invention, an electronic component is mounted on the substrate, and the rib may be provided between the electronic components.

In the motor base assembly according to another embodiment of the present invention, the ribs may be press-fitted into the rib insertion holes.

According to another aspect of the present invention, there is provided a hard disk drive comprising: a base assembly for a motor according to embodiments of the present invention; A spindle motor coupled to the base body of the motor base assembly for rotating the disk; And a head driving unit for moving a magnetic head for recording and reproducing data of the disk to a predetermined position on the disk.

The base assembly for a motor and the hard disk drive including the base assembly according to the embodiment of the present invention include a base body having a rib so that sufficient rigidity can be secured even if the base assembly is manufactured by a pressing process.

1 is an exploded perspective view of a hard disk drive according to an embodiment of the present invention.
2 is a bottom perspective view of a base body of a motor base assembly according to an embodiment of the present invention.
3 is a perspective view illustrating a base and a substrate coupled to each other in a base assembly for a motor according to an embodiment of the present invention.
4 is a cross-sectional view taken along line A-A 'in Fig.
5 is an exploded perspective view of a hard disk drive according to another embodiment of the present invention.
6 is a bottom perspective view of a base body of a motor base assembly according to another embodiment of the present invention.
7 is a perspective view of a substrate according to another embodiment of the present invention.
8 is a perspective view illustrating a base and a substrate coupled to each other in a base assembly for a motor according to another embodiment of the present invention.
9 is a cross-sectional view taken along line B-B 'in Fig.
10 is a bottom perspective view of a base body according to further embodiments of the present invention.

Prior to the detailed description of the present invention, the terms or words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, and the inventor may designate his own invention in the best way It should be construed in accordance with the technical idea of the present invention based on the principle that it can be appropriately defined as a concept of a term to describe it. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the elements in the accompanying drawings are exaggerated, omitted, or schematically shown, and the size of each element does not entirely reflect the actual size.

FIG. 1 is a perspective view of a hard disk drive according to an embodiment of the present invention, FIG. 2 is a bottom perspective view of a base body of a motor base assembly according to an embodiment of the present invention, FIG. FIG. 4 is a cross-sectional view taken along line A-A 'of FIG. 3; FIG.

1 to 4, a hard disk drive 10 including a motor base assembly 100 according to an embodiment of the present invention includes a base assembly 100 for a motor, a spindle motor 200, (300).

First, when defining the direction, the axial direction upper or lower direction may be the direction from the upper surface of the motor base assembly 100 to the upper inner side surface of the cover 130, or vice versa, The outward or inward direction may mean the direction from the center of the disc D toward the outer end or vice versa.

The motor base assembly 100 may include a base 110 and a substrate 120.

Here, the base 110 may include a base body 102 and an outer wall portion 104. At this time, the disk D may be disposed on the base body 102, and the outer wall 104 may define the outside of the base body 102.

 In addition, the base body 102 may provide an internal space in which the spindle motor 200 and the head driving unit 300 are disposed.

The base 110 may be finally fabricated by producing a basic shape by press working and then bending or cutting, which is a further process.

That is, the base 110 is made of a cold rolled steel plate (SPCC, SPCE or the like), a hot rolled steel plate, a stainless steel plate, or the like, unlike a conventional one produced by a post-processing method in which aluminum is die cast and then burrs generated by die casting are removed. A light alloy steel sheet such as steel or a boron or magnesium alloy can be produced by a single step or a further step by press working.

Therefore, since the base 110 according to an embodiment of the present invention can be manufactured by press working, it is possible to minimize the processing time and energy consumption, and consequently to improve the production capacity.

However, in the case of the base 110 manufactured by press working, since a plate-shaped steel plate, steel plate, cold-rolled steel sheet or hot-rolled steel sheet to be a matrix is disposed in a press die and subjected to predetermined pressing pressure, Thickness.

Therefore, the rigidity of the base body 102 on which the disk D is disposed may inevitably be weakened. In order to ensure rigidity, the base body 102 according to an embodiment of the present invention may be provided with ribs 103 have.

The ribs 103 may protrude from the base body 102 toward the substrate 120. Here, the substrate 120 is coupled to a lower portion of the base body 102 to provide power to the hard disk drive 10 or to transmit a control signal. A detailed description of the substrate 120 will be given later do.

The bottom surface L2 of the rib 103 may be provided between the bottom surface L1 of the base body 102 and the bottom surface L3 of the outer wall 104 to be described later.

That is, the rib 103 may protrude downward in the axial direction from the base body 102, and the protruded height may be a distance from the bottom surface Ll of the base body 102 to the bottom surface L3 of the outer wall portion 104 May be less than the height.

The ribs 103 may be provided between the electronic components 125 mounted on the substrate 120.

That is, the position where the rib 103 is provided on the base body 102 may correspond to one side of the substrate 120 on which the electronic component 125 is not mounted. Here, the ribs 103 may be in contact with one side of the substrate 120. However, the present invention is not limited thereto, and a predetermined space may be provided between the rib 103 and the substrate 120.

Accordingly, the base assembly 100 for a motor according to the embodiment of the present invention may have a rib 103 on the base 110, but may not increase its overall thickness, The thickness of the substrate 120 does not need to be reduced.

The ribs 103 may be provided by applying a pressing force to the base body 102 during the pressing process of the base 110. Accordingly, the ribs 103 may be provided with an internal space S corresponding to the shape of the ribs 103.

Since the rib 103 according to an embodiment of the present invention can be provided during the manufacturing process of the base 110, the manufacturing process is easy, and since the additional structure for forming the rib 103 is not necessary, The increase can be minimized.

Meanwhile. The rib 103 may be provided in a radial shape, a spiral shape (see FIG. 10A), or a herringbone shape (see FIG. 10B) from the center of the base body 102. However, it should be noted that the shape of the ribs 103 is not limited to the limited embodiments, but may be variously modified depending on the structural and design needs.

The outer wall 104 of the base 110 may be provided on the outer side of the base body 102 to define the outer side of the base body 102 and may be formed by bending the end of the base body 102.

In other words, the shape of the inner space formed by the combination of the press mold or the forging upper mold and the lower mold is realized in a shape corresponding to the outer wall 104 and the base body 102, The base 110 according to the example can be manufactured.

However, it is also possible to form the basic base 110 by a single press working, and then form the final base 110 by bending and further pressing.

At this time, the outer wall portion 104 may be bent downward in the axial direction from the outer end of the base body 102, and may be bent upward in the axial direction and bent in the downward direction in the axial direction.

The substrate 120 may be employed with various types of substrates (e.g., a ceramic substrate or a printed circuit board (PCB)) well known in the art.

The substrate 120 is coupled to a lower portion of the base body 102 and a plurality of electronic components 125 may be mounted on one surface of the substrate 120.

In addition, a mounting electrode for mounting the electronic component 125 or a wiring pattern (not shown) for electrically connecting the mounting electrodes to each other may be provided on one surface of the substrate 120.

Here, the substrate 120 may be a multilayer substrate formed of a plurality of layers, and conductive vias (not shown) may be provided between the respective layers to electrically connect the respective layers.

On the other hand, a rib 103 may be disposed between the electronic components 125. [ That is, the ribs 103 may be disposed between the electronic parts 125 protruding downward in the axial direction from the base body 103 and mounted on the substrate 120.

The spindle motor 200 rotates the disk D and is fixed to the center of the base body 102.

The disk D may include a recording surface coupled to the spindle motor 200 and rotated along with rotation of the spindle motor 200 to record data thereon.

A clamp 210 for firmly fixing the disk D to the spindle motor 200 may be fastened to the upper end of the spindle motor 200 by a screw 220.

1 shows a structure in which a single disk D is mounted on the spindle motor 200. However, this is merely an example, and one or more disks D may be mounted on the spindle motor 200 .

When a plurality of discs D are mounted in this manner, a ring-shaped spacer for maintaining the spacing between the discs D may be disposed between the discs D.

The head driving unit 300 is called an HSA (Head Stack Assembly). The head driving unit 300 records data on the disk D by mounting the magnetic head and moving the magnetic head to a predetermined position, May be read.

The head driving unit 300 can move the magnetic head to a predetermined position of the disk D by the voice coil motor VCM including the coil 310 and the upper and lower magnets 320 and 330 .

The upper and lower magnets 320 and 330 disposed on the upper side and the lower side of the coil 310 provided on the voice coil motor are connected to the upper and lower yokes 340 and 340 for increasing the magnetic flux density and fixing the base 310 with the base 110, , 350).

The voice coil motor VCM is controlled by a servo control system and is controlled by a current input by a coil 310 provided to the voice coil motor VCM and a magnetic field generated by the upper and lower magnets 320 and 330 The head driving unit 300 is rotated about the pivot shaft 370 in the direction corresponding to the left hand rule of the phamming.

Here, when an operation start command is input to the hard disk drive 10 according to the embodiment of the present invention and the disk D starts to rotate, the voice coil motor VCM rotates the swing arm in the counterclockwise direction, The head is moved onto the recording surface of the disk D.

On the contrary, when the operation stop command is inputted to the hard disk drive 10 according to the embodiment of the present invention, the voice coil motor VCM rotates the swing arm in the clockwise direction to move the magnetic head out of the disk D .

The magnetic head, which is out of the recording surface of the disk D, is parked on a ramp 360 provided on the outer side of the disk D.

Here, the ramp 360 may park the magnetic head, and when the magnetic head moves to the disk D, the ramp 360 may be spaced apart at a predetermined interval to stably read the data of the disk D.

FIG. 5 is an exploded perspective view of a hard disk drive according to another embodiment of the present invention, FIG. 6 is a bottom perspective view of a base body of a motor base according to another embodiment of the present invention, and FIG. FIG. 8 is a perspective view illustrating a base and a substrate coupled to each other according to another embodiment of the present invention, and FIG. 9 is a cross-sectional view taken along line B-B 'of FIG.

5 to 9, a hard disk drive 20 according to another embodiment of the present invention may include a base assembly 100 for a motor, a spindle motor 200, and a head driving unit 300.

Here, the hard disk drive 20 according to another embodiment of the present invention is the same as the hard disk drive 10 shown in FIGS. 1 to 4 except that the base body 102 of the motor base assembly 100 And the structure of the substrate 120 can be differentiated.

A detailed description of the same configuration will be omitted, and the above description will be omitted.

The base assembly 100 for a motor according to another embodiment of the present invention may include a base 110 and a substrate 120.

The base 110 may include a base body 102 and an outer wall 104 and the base body 102 may include a rib 103.

The rib 103 may protrude downward in the axial direction from the base body 102 and at least one side may be inserted into the rib insertion hole 127 formed in the substrate 120.

That is, a rib insertion hole 127 may be provided at a position corresponding to the rib 103 provided in the base body 102 of the substrate 120, so that the base 110 and the substrate 120 are coupled The ribs 103 can be inserted into the insertion holes 127. FIG.

The thickness of the rib 103 may be larger than the thickness of the rib insertion hole 127 so that the rib 103 can be press-fitted into the rib insertion hole 127.

Here, the substrate 127 may be provided with a depression for receiving the ribs 103 at a predetermined depth instead of the rib insertion holes 127 formed through the ribs.

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 of ordinary skill in the art that such changes or modifications are within the scope of the appended claims.

100: motor base assembly 110: base
102: base body 103: rib
104: outer wall part 120: substrate
200: spindle motor 300: head driving part

Claims (10)

A base having a base body on which the disk is disposed and an outer wall portion defining an outer side of the base body; And
And a substrate coupled to a lower portion of the base and having a plurality of electronic components mounted thereon,
Wherein the base body is provided with a rib protruding toward the substrate.
The method according to claim 1,
Wherein a bottom surface of the rib is provided between a bottom surface of the base body and a bottom surface of the outer wall portion.
The method according to claim 1,
And the rib is provided between the electronic parts.
The method according to claim 1,
And an inner space corresponding to the shape of the rib is provided on the inner side of the rib.
The method according to claim 1,
Said rib being provided by a pressing process.
The method according to claim 1,
Wherein the ribs are disposed in a radial, spiral, or herringbone configuration from the center of the base body.
A base having a base body on which the disk is disposed and an outer wall portion defining an outer side of the base body; And
And a substrate coupled to a lower portion of the base and having a rib insertion hole,
Wherein the base body is provided with a rib projecting to be inserted and fixed into the rib insertion hole.
8. The method of claim 7,
Wherein the electronic component is mounted on the substrate, and the rib is provided between the electronic components.
8. The method of claim 7,
And the rib is press-fitted to the rib insertion hole.
A motor base assembly according to any one of claims 1 to 9;
A spindle motor coupled to the base body of the motor base assembly for rotating the disk; And
And a head driving unit for moving a magnetic head for recording and reproducing data of the disk to a predetermined position on the disk.
KR1020140099985A 2014-08-04 2014-08-04 Base for motor and Hard disk drive including the sami KR20160016259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140099985A KR20160016259A (en) 2014-08-04 2014-08-04 Base for motor and Hard disk drive including the sami

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140099985A KR20160016259A (en) 2014-08-04 2014-08-04 Base for motor and Hard disk drive including the sami

Publications (1)

Publication Number Publication Date
KR20160016259A true KR20160016259A (en) 2016-02-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140099985A KR20160016259A (en) 2014-08-04 2014-08-04 Base for motor and Hard disk drive including the sami

Country Status (1)

Country Link
KR (1) KR20160016259A (en)

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