KR20150025849A - Base assembly and hard disk drive including the same - Google Patents

Base assembly and hard disk drive including the same Download PDF

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Publication number
KR20150025849A
KR20150025849A KR20130103935A KR20130103935A KR20150025849A KR 20150025849 A KR20150025849 A KR 20150025849A KR 20130103935 A KR20130103935 A KR 20130103935A KR 20130103935 A KR20130103935 A KR 20130103935A KR 20150025849 A KR20150025849 A KR 20150025849A
Authority
KR
South Korea
Prior art keywords
base member
connector
base
strength reinforcing
present
Prior art date
Application number
KR20130103935A
Other languages
Korean (ko)
Inventor
전일근
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 KR20130103935A priority Critical patent/KR20150025849A/en
Publication of KR20150025849A publication Critical patent/KR20150025849A/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
    • G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
    • 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
    • G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
    • G11B33/121—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules the apparatus comprising a single recording/reproducing device
    • G11B33/122—Arrangements for providing electrical connections, e.g. connectors, cables, switches
    • 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
    • G11B5/56—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 support for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering
    • 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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  • Moving Of Heads (AREA)

Abstract

The purpose of the present invention is to provide a base assembly capable of ensuring sufficient rigidity and a hard disk drive including the same. According to an embodiment of the present invention, a base assembly includes: a base member made of a steel plate; a substrate coupled to the base member, and having a connector provided on one side; and an outer wall portion formed by being bent from a first side surface and a second side surface in a longitudinal direction of the base member, and a third side surface in a width direction of the base member, wherein the connector is arranged adjacent to a fourth side surface in the width direction of the base member, and a strength reinforcement portion is formed on the fourth side surface.

Description

[0001] The present invention relates to a base assembly and a hard disk drive including the base assembly,

The present invention relates to a base assembly 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 head driving unit, that is, an HSA (Head Stack Assembly) is provided in the base member so that the magnetic head can be moved on the disk, and the head driving unit moves the magnetic head And performs the function while moving to a desired position.

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

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 terms of the life of the die-casting mold, there is a limit in manufacturing a large number of base members with one die, and there is a problem in that the dimension accuracy of the base member by the die-casting process is not good .

Therefore, in order to solve the problems of the die-casting process, the base member is manufactured using a press or forging technique.

However, there is a problem that rigidity of the base member becomes weak when the base member is manufactured by plastic deformation of a thin steel-based steel sheet.

An object of an embodiment of the present invention is to provide a base assembly capable of manufacturing a base member by plastic deformation of a steel plate and ensuring sufficient rigidity, and a hard disk drive including the base assembly.

Another object of the present invention is to provide a base assembly and a hard disk drive including the base assembly, which can minimize the processing time and energy consumption by manufacturing the base member by a press or forging process.

A base assembly according to an embodiment of the present invention includes a base member provided as a steel plate; A substrate coupled to the base member and having a connector on one side; And an outer wall portion formed by bending at a first side surface, a second side surface and a third side surface in the width direction of the base member in the longitudinal direction, wherein the connector has a fourth side surface in the width direction of the base member And the strength reinforcing portion may be formed on the fourth side surface.

The base member of the base assembly according to an embodiment of the present invention may be formed by plastic working.

The strength reinforcing portion of the base assembly according to an embodiment of the present invention may be formed by bending at least a part of the fourth side surface.

In the base assembly according to an embodiment of the present invention, an installation groove may be formed at a portion of the outer end of the base member adjacent to the fourth side.

The mounting groove of the base assembly according to an embodiment of the present invention may be formed to extend from an outer end of the base member to a portion of the strength reinforcing portion.

The mounting groove of the base assembly according to an embodiment of the present invention may be formed in a shape of a groove with one side opened by bending the strength reinforcing portion.

The mounting groove of the base assembly according to an embodiment of the present invention may have a width smaller than an inner width of the mounting groove.

In the fourth side surface of the base assembly according to an embodiment of the present invention, a fixing portion for bending at both ends of the fourth side surface and extending in the longitudinal direction of the base member and fixing the substrate may be formed.

The strength reinforcing portion of the base assembly according to an embodiment of the present invention may be connected to the fixing portion and bent at the fourth side.

A base assembly according to an embodiment of the present invention is provided with a steel plate, and includes a base member on which a disk is disposed; A substrate coupled to the base member and having a connector on one side; And an outer wall portion formed by bending the outer end portion of the base member except for a portion where the connector is located, wherein an intensity strengthening portion is formed at an outer end portion of the portion where the connector is located .

The strength reinforcing portion of the base assembly according to an embodiment of the present invention may be formed by bending at an outer end of the base member at a portion where the connector is located.

A hard disk drive according to an embodiment of the present invention includes a base assembly; 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.

According to the base assembly and the hard disk drive including the base assembly according to an embodiment of the present invention, sufficient rigidity can be secured even if the base member is manufactured by plastic deformation of the steel plate.

In addition, the base member can be manufactured by pressing or forging to minimize process time and energy consumption.

1 is a schematic exploded perspective view illustrating a hard disk drive according to an embodiment of the present invention;
2 is a perspective view of a base member according to an embodiment of the present invention;
3 is an enlarged perspective view of a portion A in Fig.
4 is an enlarged perspective view showing a modified example of the strength reinforcing portion in the base member according to the embodiment of the present invention.
5 is an enlarged perspective view showing a modified example of a mounting groove in a base member according to an embodiment of the present invention;

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. 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 illustrating a hard disk drive according to an embodiment of the present invention.

First, if a term is defined as a direction, the longitudinal direction may mean a long side direction of the base member 110, and the width direction may mean a short side direction of the base member 110.

Referring to FIG. 1, a hard disk drive according to an embodiment of the present invention may include a base assembly 100, a spindle motor 200, and a head driving unit 300.

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

The base member 110 may be a housing that forms an outer appearance together with the cover plate 500 in the hard disk drive according to an embodiment of the present invention. The disk unit 111 and the head seating part 112 ).

The base member 110 and the cover plate 500 may be coupled to holes (not shown) formed in the base member 110 by fastening a plurality of screws 510.

Here, the base member 110 may be formed by plastically deforming the steel plate. Specifically, the base member 110 may be formed by pressing the base member 110, and then the shape of the final base member 110 may be manufactured through bending or incision, can do.

That is, the base member 110 according to an embodiment of the present invention may be manufactured by die-casting a conventional aluminum (Al), and then removing a burr or the like generated by die- (SPCC, SPCE, etc.), hot-rolled steel sheet, stainless steel, or a light alloy steel sheet such as a boron or magnesium alloy is subjected to a single step or a further processing by plastic working such as press working It can produce.

Therefore, since the base member 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.

The disk arrangement part 111 of the base member 110 is a part in which a disk D coupled to a spindle motor 200 to be described later is disposed, D) can be located.

The disk arrangement part 111 may be formed in a circular shape to correspond to the shape of the disk D and a part of the disk arrangement part 111 may be stepped so that the head driving part 300 The head positioning portion 112 can be formed.

The reason why the head seating part 112 is positioned below the disk arrangement part 111 is that the head driving part 300 is a space that repeatedly rotates so as to reproduce and record data on the disk D .

That is, the head driving unit 300 provides a driving force to a magnetic head (not shown) so that the magnetic head (not shown) is inserted between the discs D, .

A substrate 120 for supplying power to the coil of the spindle motor 200 may be mounted on the lower portion of the base member 110. The substrate 120 may be a flexible printed circuit board.

At one side of the board 120, a connector 122 for connecting to a main board in the electronic product may be provided.

The spindle motor 200 rotates the disk D and is fixed to the center of the disk arrangement unit 111.

The disk D may include a recording surface coupled to the spindle motor 200 and rotated together with 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 215.

1 shows a configuration in which one disk D is mounted on the spindle motor 200. However, this is merely an example, and one or more disks D are mounted on the spindle motor 200 . When a plurality of disks D are mounted in this manner, a ring-shaped spacer for maintaining the spacing between the disks D may be disposed between the disks D.

The head driving unit 300 is called an HSA (Head Stack Assembly) and mounts a magnetic head (not shown) and moves the magnetic head (not shown) to a predetermined position to record data on the disk D, And may read the data recorded on the disk (D).

The head driving unit 300 may include a voice coil motor (VCM), a swing arm 320 and a suspension 330. The suspension 330 may be fixed to the front end of the swing arm 320 Can be combined.

The head driving unit 300 may be rotatably coupled to the pivot shaft 113 of the head seating part 112 of the base member 110 and the disk D may be coupled to the base member 110 The magnetic head (not shown) performs a function of reproducing or recording data with respect to the recording surface of the disk D. The magnetic head (not shown)

The voice coil motor VCM is disposed on the upper side and the lower side of the VCM coil 310 of the head driving unit 300. The voice coil motor VCM is provided to the head driving unit 300, And magnets 340 and 350 may be provided.

The voice coil motor VCM is controlled by a servo control system and is controlled according to the Fleming's left hand law by the interaction between the current input by the VCM coil 310 and the magnetic field formed by the magnets 340 and 350 The head driving unit 300 is rotated about the pivot shaft 113 in the direction of the axis.

The magnets 340 and 350 disposed on the upper side and the lower side of the coil 310 provided on the voice coil motor VCM of the head driving unit 300 can increase the magnetic flux density and fix the base body 110 And may be coupled to the upper and lower yokes 360 and 370, respectively.

The disk D starts to rotate by inputting an operation start command of the hard disk drive according to an embodiment of the present invention and the voice coil motor VCM rotates the swing arm 320 in the counterclockwise direction, (Not shown) on the recording surface of the disk D.

The voice coil motor VCM rotates the swing arm 320 in the clockwise direction so that the magnetic head (not shown) rotates the disk D in the clockwise direction, .

A magnetic head (not shown), which is out of the recording surface of the disk D, is parked on a ramp 380 provided outside the disk D.

FIG. 2 is a perspective view of a base member according to one embodiment of the present invention, and FIG. 3 is an enlarged perspective view of a portion A of FIG.

4 is an enlarged perspective view showing a modified example of the strength reinforcing portion in the base member according to the embodiment of the present invention, and FIG. 5 is a perspective view showing a modified example of the installation groove in the base member according to the embodiment of the present invention Is an enlarged perspective view.

2 to 5, the base member 110 according to an embodiment of the present invention may include an outer wall portion 114 and an intensity reinforcing portion 115.

The outer wall 114 may be bent at an outer end of the base member 110.

The base member 110 may have a first side surface 111a and a second side surface 111b in the longitudinal direction and a third side surface 111c and a fourth side surface 111d in the width direction.

The first side surface 111a and the second side surface 111b may denote the long side of the base member 110 and the third side surface 111c and the fourth side surface 111d may be the long side of the base member 110 ). ≪ / RTI >

The substrate 120 is coupled to the base member 110. The connector 122 provided on the substrate 120 may be disposed adjacent to the fourth side surface 111d.

The outer wall part 114 may be formed by bending the first side face 111a and the second side face 111b in the longitudinal direction of the base member 110 and the third side face 111c in the width direction. have.

In other words, the outer wall part 114 includes the first side surface 111a and the second side surface 111b, which are long sides of the base member 110, and the connector 122 of the short side of the base member 110 (The third side face 111c) opposite to the side where it is located.

In other words, the outer wall part 114 may be formed by bending the outer end of the base body 110 except for the part where the connector 122 is located.

The base member 110 is provided as a thin steel plate, and basically has a uniform thickness by pressing and bending the plate member.

Accordingly, the base member 110 may be deformed or twisted, resulting in poor rigidity.

Therefore, in an embodiment of the present invention, in order to improve the rigidity of the base member 110, the outer side end portion (the first side surface 111a, the second side surface 111b, The side wall 111c) to form the outer wall 114. [0054]

The outer wall part 114 can be positioned substantially perpendicular to the base member 110 so that the outer wall part 114 can prevent the base member 110 from being deformed or distorted.

At this time, the outer side wall 114 may not be formed on the fourth side face 111d in order to avoid interference with the connector 122.

However, when the outer wall part 114 is not formed on the fourth side surface 111d, the base member 110 may be deformed or distorted from the fourth side surface 111d.

Therefore, in an embodiment of the present invention, the strength reinforcement portion 115 may be formed on the fourth side surface 111d.

The strength reinforcing portion 115 may be formed by bending at least a part of the fourth side surface 111d.

In other words, the strength reinforcing portion 115 may be formed by bending the outer end of the base body 110 at a portion where the connector 122 is located.

That is, the strength reinforcing portion 115 may be formed by bending at the outer end portion (the fourth side surface 111d) of the base member 110, like the outer wall portion 122, And may be formed by bending a part of the fourth side surface 111d to avoid interference.

However, the present invention is not limited thereto, and the strength reinforcing portion 115 may be formed by bending the entirety of the fourth side surface 111d within a range that does not interfere with the connector 122.

Meanwhile, an installation groove 116 may be formed in a portion of the outer side end of the base body 110 adjacent to the fourth side surface 111d.

The mounting groove 116 may be a groove for inserting an RF tag (RF TAG), and may have a groove shape with one side opened.

The mounting groove 116 may extend from an outer end of the base body 110 to a portion of the strength reinforcing portion 115.

Therefore, when the strength reinforcing part 115 is bent at the fourth side surface 111d, the mounting groove 116 can have a groove shape with one side opened.

The mounting groove 116 is formed to be narrower than the width of the opening of the mounting groove 116 so that an RF tag inserted into the mounting groove 116 is inserted into the base member 110 from being detached.

The mounting groove 116 may be a groove having one side opened as shown in FIGS. 2 to 4, but it may be a circular groove as shown in FIG.

In the case where the installation groove 116 is formed in a circular groove shape, since one side is not opened, it is more advantageous in securing the rigidity of the base member 110.

The base member 110 may have a fixing part 117 bent at both ends of the fourth side surface 111d and extending in the longitudinal direction of the base member 110. [

The fixing portion 117 may function to fix the substrate 120 coupled to the base member 110.

As shown in FIG. 3, the fixing portion 117 and the strength reinforcing portion 115 may be separated from each other. As shown in FIG. 4, the fixing portion 117 and the strength reinforcing portion 115 may be formed separately, (115) are connected to each other.

That is, as shown in FIG. 4, the strength reinforcing portion 115 and the fixing portion 117 may be bent at the fourth side surface 111d in a state of being connected to each other.

The rigidity of the base member 110 can be secured by forming the strength reinforcing portion 115 at the outer end of the base member 110 at the portion where the connector 122 is located, It is possible to prevent deformation and warping of the base 110.

Also, since the base member 110 can be manufactured by a press or forging process, the process time and energy consumption can be minimized, and as a result, the production capacity can be maximized.

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 changes or modifications may fall within the scope of the appended claims.

110: base member 111:
111a: first side 111b: second side
111c: third side 111d: fourth side
112: head seating portion 114: outer wall portion
115: strength reinforcing portion 120: substrate
122: connector 200: spindle motor
210: clamp 300: head drive
310: coil 320: swing arm
330: Suspension 340: Upper magnet
350: lower magnet 360: upper yoke
370: lower yoke 380: lamp
500: cover plate

Claims (12)

A base member provided as a steel plate;
A substrate coupled to the base member and having a connector on one side; And
And an outer wall portion bent in a first side surface, a second side surface, and a third side surface in the width direction of the base member in the longitudinal direction,
Wherein the connector is disposed close to a fourth lateral side in the width direction of the base member,
And the strength reinforcement is formed on the fourth side surface.
The method according to claim 1,
Wherein the base member is formed by plastic working.
The method according to claim 1,
Wherein the strength reinforcing portion is formed by bending at least a part of the fourth side surface.
The method according to claim 1,
And a mounting groove is formed at a portion of the outer end of the base member adjacent to the fourth side.
5. The method of claim 4,
Wherein the mounting groove is formed to extend from an outer end of the base member to a portion of the strength reinforcing portion.
6. The method of claim 5,
Wherein the mounting groove is formed in a shape of a groove whose one side is opened by bending the strength reinforcing portion.
The method according to claim 6,
Wherein the mounting groove is formed such that the width of the opening side is narrower than the width of the inside of the mounting groove.
The method according to claim 1,
And a fixing portion for fixing the substrate is formed on the fourth side surface, the base portion being bent at both ends of the fourth side surface and extending in the longitudinal direction of the base member.
9. The method of claim 8,
And the strength reinforcing portion is connected to the fixing portion to be bent at the fourth side surface.
A base member provided as a steel plate;
A substrate coupled to the base member and having a connector on one side; And
And an outer wall bent at an outer end of the base member except for a portion where the connector is located,
And a strength reinforcing portion is formed at an outer end of the base member at a portion where the connector is located.
11. The method of claim 10,
Wherein the strength reinforcing portion is formed by bending at an outer end of the base member at a portion where the connector is located.
A base assembly according to any one of claims 1 to 10; 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.
KR20130103935A 2013-08-30 2013-08-30 Base assembly and hard disk drive including the same KR20150025849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20130103935A KR20150025849A (en) 2013-08-30 2013-08-30 Base assembly and hard disk drive including the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20130103935A KR20150025849A (en) 2013-08-30 2013-08-30 Base assembly and hard disk drive including the same

Publications (1)

Publication Number Publication Date
KR20150025849A true KR20150025849A (en) 2015-03-11

Family

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Family Applications (1)

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KR20130103935A KR20150025849A (en) 2013-08-30 2013-08-30 Base assembly and hard disk drive including the same

Country Status (1)

Country Link
KR (1) KR20150025849A (en)

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