CN101656081B - Magnetic head drive arm combination and magnetic disk drive unit having same - Google Patents
Magnetic head drive arm combination and magnetic disk drive unit having same Download PDFInfo
- Publication number
- CN101656081B CN101656081B CN2008102111253A CN200810211125A CN101656081B CN 101656081 B CN101656081 B CN 101656081B CN 2008102111253 A CN2008102111253 A CN 2008102111253A CN 200810211125 A CN200810211125 A CN 200810211125A CN 101656081 B CN101656081 B CN 101656081B
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- actuating arm
- flange
- magnetic head
- main body
- face
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Abstract
The invention discloses a magnetic head drive arm combination, which comprises a pivot bearing component, a drive arm and a fantail space block. The pivot bearing component is provided with a main body which comprises a first end face, a second end face and a flange which is positioned between the first end face and the second end face and extends from the main body. The flange is provided with a first boundary surface close to the first end face of the main body and a second boundary surface opposite to the first boundary surface. The drive arm is arranged on the main body and is fixed on the first boundary surface of the flange. The fantail space block is arranged on the main body and is fixed on the second interface of the flange. The magnetic head drive arm combination reduces additional components and has a simple structure and low manufacturing cost. The invention further discloses a magnetic disk drive unit using the magnetic head drive arm.
Description
Technical field
The present invention relates to a kind of information record carrier, particularly relate to a kind of disc drive unit, more specifically, relate to the magnetic head actuating arm combination of using in the disc drive unit (head stackassembly).
Background technology
Disc drive unit is a kind of known information-storing device that utilizes magnetic medium storage data; Its utilization is positioned at the movably read/write head of magnetic medium top optionally from the magnetic medium of rotation, and for example reading of data or magnetropism medium write data in the disk.
The for example clear traditional disc drive unit 100 of Fig. 1 a has shown that disk 104 is installed on the Spindle Motor 105 and by its rotation.Magnetic head actuating arm combination 102 is carried the magnetic head 101 that read/write head is housed.Voice coil motor (voice-coil motor) 103 is used for the motion of control head actuating arm combination 102, thereby control head 101 moves between disk 104 lip-deep tracks, realizes that finally read/write head writes data from disk 104 reading of data or to disk 104.In operation, the aerodynamic force property effect meeting between magnetic head 101 and the disk 104 produces a lift.Thereby this lift is reversed balance makes magnetic head 101 in the overall diameter stroke of magnetic head actuating arm combination 102, above the disk 104 of rotation, keeps a predetermined flying height.Also have load/discharge mechanism 106 in addition, be generally a ramp structure with load/unloading magnetic head.In addition, all above-mentioned parts all are installed in housing 122 inside.
Fig. 1 b-1c has shown the magnetic head actuating arm combination of disc drive unit among Fig. 1 a in detail.As shown in the figure; Magnetic head actuating arm combination 102 comprises an actuating arm 109, a fantail spacer block 108 and the pivot bearing component that is connected actuating arm 109 and fantail spacer block 108 (pivot bearing assembly) 107 that has through hole; The near-end of actuating arm 109 is provided with a mounting hole, is provided with a magnetic head 101 at its far-end.Magnetic head actuating arm combination 102 can further comprise flexible printed circuit board combination (FPCBA) 150; This flexible printed circuit board combination 150 is connected to the afterbody (remainder) of magnetic head actuating arm combination 102 through flexible cable 110, thereby makes magnetic head actuating arm combination 102 and external control device electrically connect.
Pivot bearing component 107 comprises step bearing 107a, pad 107b and nut 107c.This step bearing 107a has a flange 191 that radially extends from its external peripheral surface, and pad 107b and nut 107c are used, and actuating arm 109 and fantail spacer block 108 are fixed together.In the assembling process of magnetic head actuating arm combination 102; At first; Step bearing 107a passes the mounting hole 111 of actuating arm 109 and the through hole 112 of fantail spacer block 108, thereby makes the end surface of actuating arm 109 press flange 191, and fantail spacer block 108 presses actuating arm 109.Then, with pad 107b and nut 107c actuating arm 109 and fantail spacer block 108 are anchored on the step bearing 107a.
Yet, in order to install, can use additional parts inevitably, just packing ring and nut are so the production cost of such magnetic head actuating arm combination can increase.In addition, because the use of optional feature in assembling process, it is complicated and time-consuming that assembling process becomes.
Thereby, demand urgently providing a kind of new magnetic head actuating arm combination to overcome the shortcoming of prior art.
Summary of the invention
One object of the present invention is for providing a kind of simple structure, thereby can reduce the magnetic head actuating arm combination of its production cost.
Another object of the present invention is for providing a kind of simple structure, thereby can reduce the disc drive unit of its production cost.
For realizing the foregoing invention purpose, the present invention provides a kind of magnetic head actuating arm combination.Said magnetic head actuating arm combination comprises pivot bearing component, actuating arm and fantail spacer block.Said pivot bearing component has a main body, this main body comprise first end face, second end face and be positioned at this first end face and this second end face in the middle of and by the extended flange of this main body.Said flange has first interphase of first end face that is close to said main body and second interphase relative with said first interphase.Said actuating arm is installed on the said main body and is fixed on first interphase of said flange.Said fantail spacer block is installed on the said main body and is fixed on second interphase of said flange.
Said actuating arm is provided with mounting hole, extremely is contained in the said mounting hole on the top of the first interfacial said main body of said flange from said first end face.Be provided with through hole in the said fantail spacer block, the bottom from second interphase of said flange to the said main body of second end face of said main body is contained in the said through hole.
Said actuating arm is fixed on first interphase of said flange through the mode of laser bonding.Said fantail spacer block is fastened on second interphase of said flange through bonding agent.Said bonding agent is an epoxy resin.In another embodiment of the present invention, said fantail spacer block also can be fixed on second interphase of said flange through laser bonding.
A kind of disc drive unit, thus comprise disk, be used to rotate Spindle Motor, the magnetic head actuating arm combination of this disk and be used to rotate this magnetic head actuating arm combination and make that magnetic head actuating arm combination can be at the voice coil motor of magnetic disk surface motion.Said magnetic head actuating arm combination comprises: pivot bearing component, actuating arm and fantail spacer block.Said pivot bearing component has a main body, this main body comprise first end face, second end face and be positioned at this first end face and this second end face in the middle of and by the extended flange of this main body.Said flange has first interphase of first end face that is close to said main body and second interphase relative with said first interphase.Said actuating arm is installed on the said main body and is fixed on first interphase of said flange.Said fantail spacer block is installed on the said main body and is fixed on second interphase of said flange.
Compare with traditional magnetic head actuating arm combination; Because a flange is located on the outer ring of pivot bearing component and between two end faces of outer ring; Thereby said actuating arm and said fantail spacer block are fixed on the opposite both sides of flange on the flange so actuating arm and fantail spacer block can be installed in respectively, thereby also just produce the magnetic head actuating arm combination that does not have requisite optional feature in the prior art.Therefore, obtained a kind of magnetic head actuating arm combination simple in structure, correspondingly, the reduction that its manufacturing cost is also suitable.
Other aspects of the present invention, feature and advantage can be from obviously obtaining below in conjunction with being described in detail of accompanying drawing.Accompanying drawing is the part of the disclosure of invention, in order to illustrate principle of the present invention.
Description of drawings
Fig. 1 a is the vertical view of traditional disc drive unit;
Fig. 1 b is the stereographic map of the magnetic head actuating arm combination of the disc drive unit shown in Fig. 1 a;
Fig. 1 c is the three-dimensional exploded view of the magnetic head actuating arm combination shown in Fig. 1 b;
Fig. 2 a is the three-dimensional exploded view of an embodiment of magnetic head actuating arm combination of the present invention;
Fig. 2 b is the stereographic map after the magnetic head actuating arm combination assembling among Fig. 2 a;
Fig. 3 is the stereographic map of the pivot bearing component of the magnetic head actuating arm combination among Fig. 2 a;
Fig. 4 is the fragmentary sectional view of the magnetic head actuating arm combination among Fig. 2 b; And
Fig. 5 is the vertical view of an embodiment of disc drive unit of the present invention.
Embodiment
With reference now to Fig. 2 a-2b and Fig. 3-4,, wherein depicted in greater detail a preferred embodiment of magnetic head actuating arm combination of the present invention.With reference to figure 2a and Fig. 2 b, magnetic head actuating arm combination 202 comprises actuating arm 209, and this actuating arm 209 is processed like stainless steel by the rigid material of any appropriate, is installed in the magnetic head 201 of one of which end with abundant support.The other end of actuating arm 209 is formed with the mounting hole 211 that is used for this actuating arm 209 is fixed to miscellaneous part (waiting a moment description).Magnetic head actuating arm combination 202 also comprises a fantail spacer block 208 that wherein is provided with through hole 212, and this through hole 212 is corresponding to the mounting hole 211 of actuating arm 209.Actuating arm 209 is fixed together through pivot bearing component 207 with fantail spacer block 208, below with more detailed description.
With reference to figure 3-4, pivot bearing component 207 is essentially cylindrical shape, comprises by rigid material, for example the inner ring 220 processed of steel.Be formed with an axis hole 224 in the inner ring 220.
It should be noted that tourelle 221 can adopt other available forms in the prior art.For example, tourelle 221 can be ball.Optional, this tourelle 221 also can be needle roller.Outer ring 222 have perpendicular to first end face 282 of the central axis of axle and with first end face, 282 second opposed end faces 284.
In assembling process, earlier actuating arm 209 is placed on the flange 223 of outer ring 222, make actuating arm 209 parts be carried on first interphase 262, and the mounting hole 211 (with reference to figure 2a) of actuating arm 209 is tightly filled on the top of outer ring 222.Then; Use generating device of laser (figure does not show) emission high energy laser beam; This laser beam is aimed at and is located at actuating arm 209 1 sides and is positioned at mounting hole 211 pad on every side, thereby makes actuating arm 209 be soldered on first interphase 262 through laser welding method.After that; Its through hole 212 peripheral regions are coated with bonding agent; For example the fantail spacer block 208 of epoxy resin is placed on second interphase 264, and the bottom that makes fantail spacer block 298 parts paste second interphase 264 and outer ring 222 is tightly filled in the through hole 212 of fantail spacer block 208 (with reference to figure 2a).Thereby fantail spacer block 208 passes through adhesive on second interphase of flange 223.At last, whole assembling process finishes, thereby has formed the magnetic head actuating arm combination shown in Fig. 2 b.
Preferably, flange 223 for annular so that big contact area to be provided between first interphase 262 and the actuating arm 209 and between second interphase 264 and the fantail spacer block 208, thereby strengthened the connection between them.The connection of this enhancing can prevent between outer ring 222 and the actuating arm 209 or outer ring 222 and fantail spacer block 208 between relatively rotate.
In addition, be actuator support arm effectively 209 and fantail spacer block 208, flange is thick more good more.Preferably, equate that with distance between second end face 284 to the flange 223 in other words, flange 223 is positioned at the middle of two end faces from the distance of first end face 282 to the flange 223.When the magnetic head actuating arm combination with this structure was assembled to disc drive unit, the above-mentioned characteristic of flange 223 can make whole magnetic head actuating arm combination more stable.
Though the actuating arm 209 in the present embodiment is installed to before fantail spacer block 208 on the outer ring 222, it also is feasible that fantail spacer block 208 back installing drive arms 209 are installed earlier.In addition, though the fantail spacer block 208 in the present embodiment is to install through bonding agent, other method also is feasible with the similar method for laser welding of mode that installing drive arm 209 uses for example.
Compare with traditional magnetic head actuating arm combination; Because a flange is located on the outer ring of pivot bearing component and between the both ends of the surface of outer ring; Actuating arm and fantail spacer block can pass through suitable manner (laser bonding and/or bonding agent respectively; Epoxy resin for example) be installed in the flange both sides, thereby formed a kind of for example magnetic head actuating arm combination of the requisite add-on assemble of nut, pad and so on prior art that do not have.Therefore, obtained a kind of magnetic head actuating arm combination simple in structure, correspondingly, the reduction that its manufacturing cost is also suitable.
Fig. 5 has shown the disc drive unit 200 that the magnetic head actuating arm combination 202 that combines Fig. 2 a-2c and Fig. 3-4 description is housed.This disc drive unit 200 comprises disk 204; The Spindle Motor 205 that is used for spinning disk 204 is equipped with the magnetic head actuating arm combination 202 of magnetic head 201 and is used for the combination 202 of rotating magnetic head actuating arm so that the voice coil motors 203 that magnetic head 201 can move on disk 204 surfaces.
The present invention has combined actual and most preferred mode is narrated, but the present invention is not limited to the embodiment that has disclosed, and on the contrary, various modification, equivalent combinations of carrying out according to essence of the present invention are contained in the present invention.
Claims (11)
1. magnetic head actuating arm combination comprises:
Pivot bearing component; Said pivot bearing component has a main body; Said main body comprises: first end face, second end face and extend out and flange between said first end face and said second end face from said main body, said flange have first interphase and second interphase relative with said first interphase of first end face of contiguous said main body;
Actuating arm, said actuating arm are installed on the said main body and are fixed on first interphase of said flange; And
Fantail spacer block, said fantail spacer block are installed on the said main body and are fixed on second interphase of said flange.
2. magnetic head actuating arm combination as claimed in claim 1 is characterized in that: said actuating arm is provided with mounting hole, extremely is contained in the said mounting hole on the top of the first interfacial said main body of said flange from said first end face.
3. magnetic head actuating arm combination as claimed in claim 2 is characterized in that: said fantail spacer block is provided with a through hole, and the bottom from second interphase of said flange to the said main body of second end face of said main body is contained in the said through hole.
4. magnetic head actuating arm combination as claimed in claim 1 is characterized in that: said actuating arm is fixed on said first interphase of said flange through laser bonding.
5. magnetic head actuating arm combination as claimed in claim 1 is characterized in that: said fantail spacer block is through on adhesive to said second interphase of said flange.
6. magnetic head actuating arm combination as claimed in claim 5 is characterized in that: said bonding agent is an epoxy resin.
7. magnetic head actuating arm combination as claimed in claim 1 is characterized in that: said fantail spacer block is fixed on described second interphase of said flange through laser bonding.
8. magnetic head actuating arm combination as claimed in claim 1 is characterized in that: said flange is an annular.
9. disc drive unit comprises:
Disk;
Be used to rotate the Spindle Motor of said disk;
Magnetic head actuating arm combination; And
Make the voice coil motor of said magnetic head actuating arm combination at the apparent motion of said disk thereby be used to rotate said magnetic head actuating arm combination, wherein said magnetic head actuating arm combination comprises:
Pivot bearing component; Said pivot bearing component has a main body; Said main body comprises first end face, second end face and extends out and flange between said first end face and second end face from said main body, and said flange has first interphase and second interphase relative with said first interphase of first end face of contiguous said main body;
Actuating arm, said actuating arm are installed on the said main body and are fixed on first interphase of said flange; And
Fantail spacer block, said fantail spacer block are installed on the said main body and are fixed on second interphase of said flange.
10. disc drive unit as claimed in claim 9 is characterized in that: said actuating arm is provided with mounting hole, extremely is contained in the said mounting hole on the top of the first interfacial said main body of said flange from said first end face.
11. disc drive unit as claimed in claim 10 is characterized in that: be provided with a through hole in the said fantail spacer block, the bottom from second interphase of said flange to the said main body of second end face of said main body is contained in the said through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102111253A CN101656081B (en) | 2008-08-22 | 2008-08-22 | Magnetic head drive arm combination and magnetic disk drive unit having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102111253A CN101656081B (en) | 2008-08-22 | 2008-08-22 | Magnetic head drive arm combination and magnetic disk drive unit having same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101656081A CN101656081A (en) | 2010-02-24 |
| CN101656081B true CN101656081B (en) | 2012-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102111253A Expired - Fee Related CN101656081B (en) | 2008-08-22 | 2008-08-22 | Magnetic head drive arm combination and magnetic disk drive unit having same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101656081B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5691581A (en) * | 1995-01-06 | 1997-11-25 | Hitachi Metals, Ltd. | Arm assembly and voice coil motor |
| CN1263334A (en) * | 1999-02-12 | 2000-08-16 | 国际商业机器公司 | Data recording device and magnetic head component |
| CN1653544A (en) * | 2002-05-09 | 2005-08-10 | 株式会社藤仓 | Hard disk driving carriage and method of producing the same |
-
2008
- 2008-08-22 CN CN2008102111253A patent/CN101656081B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5691581A (en) * | 1995-01-06 | 1997-11-25 | Hitachi Metals, Ltd. | Arm assembly and voice coil motor |
| CN1263334A (en) * | 1999-02-12 | 2000-08-16 | 国际商业机器公司 | Data recording device and magnetic head component |
| CN1653544A (en) * | 2002-05-09 | 2005-08-10 | 株式会社藤仓 | Hard disk driving carriage and method of producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101656081A (en) | 2010-02-24 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20180822 |