CN101430884B - Cantilever member, magnetic head tab combination and disk drive unit - Google Patents
Cantilever member, magnetic head tab combination and disk drive unit Download PDFInfo
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- CN101430884B CN101430884B CN2007101698190A CN200710169819A CN101430884B CN 101430884 B CN101430884 B CN 101430884B CN 2007101698190 A CN2007101698190 A CN 2007101698190A CN 200710169819 A CN200710169819 A CN 200710169819A CN 101430884 B CN101430884 B CN 101430884B
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Abstract
The invention discloses a cantilever member which comprises a flexible member, a load bar and a deformation resistant plate which is arranged between the flexible member and the load bar. The deformation resistant plate comprises a support plate part for supporting a magnetic head by a magnetic head mounting part, and a pair of cross beam parts. The cross beam parts respectively comprise at least one bending part. The bending part bends towards a direction approximately vertical to the support plate part so that the deformation resistant plate is formed into a 3D structure. The 3D structure of the support plate part benefits deformation resistance of the structure so that the cantilever member has stable transverse rigidity, longitudinal rigidity and small deflection rigidity, which not only causes good static property and improved shockproof property of a folded piece set of the magnetic head, but also helps the magnetic head to rotate more easily with the expected displacement when a microactuator is driven. The invention also discloses a folded piece set of the magnetic head with the cantilever member and a disc drive unit.
Description
Technical field
The present invention relates to a kind of information recording disk driver element, relate in particular to a kind of cantilever part, magnetic head fold piece combination and disc drive unit with magnetic head fold piece combination (HGA, head gimbal assembly) of micro-actuator.
Background technology
A kind of common information storing device is a disk drive system, and it uses magnetic media to store data and the removable read/write head that is arranged at this magnetic media top comes optionally on the magnetic media reading of data or data are write on the magnetic media.
The consumer always wishes that the memory capacity of this class disk drive system constantly increases, and wishes that simultaneously its read or write speed is faster more accurate.Therefore disc drive manufacturers is devoted to develop the disk system with higher storage capacity always, such as increasing the density of track by reducing the track width on the disk or the mode of track pitch, and then increases the memory capacity of disk indirectly.Yet, along with the increase of track density, to the also raising accordingly of position control accuracy of read/write head, so that in compact disk, realize faster more accurate read-write operation.Along with the increase of track density, use conventional art to realize more accurate read/write head being positioned track suitable on the disk difficulty more that becomes sooner.Therefore, disc drive manufacturers is sought the mode of raising to the read/write head position control always, so that the benefit of utilizing ever-increasing track density to bring.
A kind of method of read/write head position control accuracy on compact disc that improves that disc drive manufacturers is often used is for adopting the two-stage servo drive system.Described two-stage servo drive system generally includes a master driver such as voice coil motor (VCM, voice-coil motor) and secondary driver such as piezoelectricity (PZT, piezoelectric) micro-actuator.Described voice coil motor is used for read/write head is positioned the suitable track of memory disc.Described piezoelectric micro-actuator and described voice coil motor are used the fine setting that improves access speed and realize the position of read/write head on track.Therefore, described voice coil motor carries out coarse adjustment to the position of read/write head, and piezoelectric micro-actuator carries out accurate adjustment with respect to disk to the position of read/write head.
With reference to figure 1a and Fig. 1 b, a kind of traditional disc driver comprises actuating arm 104, voice coil motor 105, connects and is installed in magnetic head fold piece combination (HGA, head gimbal assembly) 106 on the described actuating arm 104, is suspended at the disk 101 on the described magnetic head fold piece combination 106 and rotates described disk 101 Spindle Motors 102.Described magnetic head fold piece combination 106 comprises magnetic head 103, have the piezoelectric micro-actuator 107 of two piezoelectric elements and carry the cantilever part 110 of the piezoelectric element of described magnetic head 103 and described piezoelectric micro-actuator 107.Described cantilever part 110 comprises flexible element 111, has the magnetic head support sector 112 of projection 112a, metal substrate 113 and has salient point 114a to support the load beam 114 of described magnetic head support sector 112 and metal substrate 113.Metal substrate 113 and load beam 114 with salient point 114a.Particularly, described flexible element 111 has some electric marks.The electric mark of described flexible element 111 connects described magnetic head support sector 112 and metal substrate 113.Described flexible element 111 also is provided with the piezoelectric element installation region 111a and the magnetic head installation region 111b that are used to place the piezoelectric element of described micro-actuator 107.Described flexible element 111 is provided with a piezoelectric element installation region that is used to place the piezoelectric element 107 of described micro-actuator.Described magnetic head 103 is installed in the described magnetic head support sector 112 by 111b part, described magnetic head installation region, and described projection 112a supports the center at described magnetic head 103 back sides.
In the prior art, when voltage is transported in two membrane piezoelectric elements of described piezoelectric micro-actuator 107, a piezoelectric element contracts, another one piezoelectric element expansion simultaneously.To produce turning moment like this, make described magnetic head 103 and magnetic head support sector 112 together round described salient point 114a rotation, make load force steadily be applied to the center of described magnetic head 103 equably from described load beam 114 so always, thereby guarantee that described magnetic head 103 has good flying quality, and then make read/write head have good flight stability.
Yet, because described magnetic head support sector 112 is connected on the described metal substrate 113 by the electric mark of described flexible element 111, and because the electric mark of flexible element 111 has only 10-20um thick and made by soft polymeric material, so in the cantilever part manufacture process, in the magnetic head fold piece combination manufacture process neutralisation treatment process, described flexible element 111 twists easily, and correspondingly described cantilever part 110 also can produce deformation.And the cantilever part deformation that is caused by this weak structure also causes cantilever part or magnetic head cantilever combination salient point to separate badly.Fig. 2 a and Fig. 2 b have showed the situation that cantilever part distortion and salient point break away from respectively.In addition, because described magnetic head 103 parts are installed in the described magnetic head support sector 112, so and the electric mark of described magnetic head support sector 112 by described flexible element 112 link to each other with metal substrate 113 static attitude such as the horizontal static attitude (PSA of described magnetic head 113, pitchstatic attitude) or vertically static attitude (RSA, roll static attitude) unstable and very difficult control, this will cause the magnetic head fold piece combination unstable properties, and have a strong impact on the dynamic property of magnetic head fold piece combination, this situation when vibrations or bump take place or producing or operating process in particularly evident.At last, said structure makes whole magnetic head fold piece combination have very poor shockproof properties.When vibrations and crash generation, for example tilt to fall bump or operation bump, the piezoelectric element of described cantilever part 110 or described piezoelectric micro-actuator 207 may be damaged.
Therefore, the disc drive unit that is necessary to provide a kind of improved cantilever part, has the magnetic head fold piece combination of micro-actuator and has a magnetic head fold piece combination solves the problems referred to above and reaches more performance.
Summary of the invention
The cantilever part that the purpose of this invention is to provide a kind of magnetic head fold piece combination, described cantilever part has improved structure, can prevent that cantilever part deformation and salient point break away from, and then the stability of the horizontal static attitude of control head tabs combination effectively and vertical static attitude, thereby improve the reading and writing data performance that is installed in the magnetic head on the magnetic head fold piece combination.
Another object of the present invention is to provide a kind of magnetic head fold piece combination with cantilever part, described cantilever part has improved structure, can prevent that cantilever part deformation and salient point break away from, and then the stability of the horizontal static attitude of control head tabs combination effectively and vertical static attitude, thereby improve the reading and writing data performance that is installed in the magnetic head on the magnetic head fold piece combination.
A further object of the present invention is to provide a kind of disc drive unit with good static and dynamic property and higher shockproof properties
In order to achieve the above object, the invention provides a kind of cantilever part of magnetic head fold piece combination.Described cantilever part comprises flexible element, anti-deformation plate and load beam.Described flexible element comprises the magnetic head installation portion that is used to place magnetic head, the piezoelectric element installation portion and the neck that is used to be connected described piezoelectric element installation portion and magnetic head installation portion that is used to place piezoelectric element.Described anti-deformation plate comprises that one is used for supporting the supporting board of described magnetic head, a pair of crossbeam portion that is located at the described relative both sides of anti-deformation plate and is connected to described supporting board by described magnetic head installation portion.Described crossbeam portion all has at least one bend, and described bend is crooked so that described anti-deformation sheet metal forming is shaped to a three-dimensional structure to the direction of the described supporting board of approximate vertical.Described load beam is by being arranged on the magnetic head installation portion that salient point on the described load beam supports described flexible element.
In one embodiment of the invention, the bend of described anti-deformation plate is located at the position arranged side by side with described salient point.Alternatively, the bend of described anti-deformation plate is located near the front portion of described supporting board.
In one embodiment of the invention, the bend of described anti-deformation plate is U-shaped, V-arrangement, arc or shaped form.
Preferably, described anti-deformation plate comprises the back board.Described back board is welded on the described load beam and is fixed between flexible element and the load beam.Described crossbeam portion extends to described back board from the front portion of described supporting board.
Preferably, described pair of beams portion respectively has the arm that a shoulder that extends laterally from described supporting board and extend perpendicular to described shoulder.Preferably, described bend is located on the described arm.
The magnetic head cantilever combination of disc drive unit provided by the invention includes the cantilever part of described magnetic head of magnetic head, micro-actuator and support and micro-actuator.Described cantilever part comprises flexible element, anti-deformation plate and load beam.Described flexible element comprises the magnetic head installation portion that is used to install described magnetic head, the piezoelectric element installation portion and the neck that is used to be connected described piezoelectric element installation portion and magnetic head installation portion that is used to install described piezoelectric element.Described anti-deformation plate comprises that one is used for supporting the supporting board of described magnetic head, a pair of crossbeam portion that is located at the described relative both sides of anti-deformation plate and is connected to described supporting board by described magnetic head installation portion.Described crossbeam portion all has at least one bend, and described bend is crooked so that described anti-deformation sheet metal forming is a three-dimensional structure to the direction of the described supporting board of approximate vertical.Described load beam is by being arranged on the magnetic head installation portion that salient point on the described load beam supports described flexible element.
Disc drive unit provided by the invention comprises magnetic head fold piece combination, connects the Spindle Motor of actuating arm, disk and the described disk of rotation of magnetic head fold piece combination.Described magnetic head fold piece combination comprises the cantilever part of described magnetic head of magnetic head, micro-actuator and support and micro-actuator.Described micro-actuator comprises piezoelectric element.Described cantilever part comprises flexible element, anti-deformation plate and load beam.Described flexible element comprises the magnetic head installation portion that is used to install described magnetic head, the piezoelectric element installation portion and the neck that is used to be connected described piezoelectric element installation portion and magnetic head installation portion that is used to install described piezoelectric element.Described anti-deformation plate comprises that one is used for supporting the supporting board of described magnetic head, a pair of crossbeam portion that is located at the described relative both sides of anti-deformation plate and is connected to described supporting board by the magnetic head installation portion.Described crossbeam portion all has at least one bend, and described bend is crooked so that described anti-deformation sheet metal forming is a three-dimensional structure to the direction of the described supporting board of approximate vertical.Described load beam is by being arranged on the magnetic head installation portion that salient point on the described load beam supports described flexible element.
Compared with prior art, the described integral layout that is shaped to the anti-deformation plate of three-dimensional structure helps resisting structural deformation, therefore can successfully stop the flexible element distortion, the magnetic head fold piece combination that helps to have described flexible element avoids cantilever part deformation and salient point to break away from.That is to say that described anti-deformation plate makes described cantilever part have stable lateral stiffness and longitudinal rigidity, this makes described magnetic head fold piece combination have good static properties, for example favourable lateral attitude and longitudinal attitude control ability and the shockproof properties that improves.In addition, the structure of above-mentioned cantilever part also provides minimum deflection stiffness for described magnetic head fold piece combination, and therefore when described micro-actuator was driven, described magnetic head rotated and have the displacement of expectation easily, thereby has improved the dynamic property of magnetic head fold piece combination.
By following description also in conjunction with the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 a is the stereographic map of traditional magnetic disk driver element.
Fig. 1 b is a three-dimensional exploded view that is used for the traditional magnetic head fold piece combination with film micro-actuator of disc drive unit shown in Fig. 1 a.
Fig. 2 a is a synoptic diagram, has showed the cantilever part deformation problems of the traditional magnetic head fold piece combination with film micro-actuator.
Fig. 2 b is a synoptic diagram, has showed that the salient point of the traditional magnetic head fold piece combination with film micro-actuator breaks away from problem.
Fig. 3 is the stereographic map that the present invention has the magnetic head fold piece combination of piezoelectric micro-actuator.
Fig. 4 is the local amplification stereogram of magnetic head fold piece combination shown in Figure 3, has showed the tongue area of described magnetic head fold piece combination.
Fig. 5 is the stereographic map of the flexible element of magnetic head fold piece combination shown in Figure 4.
Fig. 6 is the stereographic map of the anti-deformation plate of magnetic head fold piece combination shown in Figure 4.
Fig. 7 is the partial side view of magnetic head fold piece combination shown in Figure 4.
Fig. 8 is the stereographic map of disc drive unit of the present invention.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above, the present invention aims to provide a kind of cantilever part, writes down or the magnetic head of Copy Info with the relative information media that suspends.Described cantilever part comprises flexible element, anti-deformation plate and load beam.Described anti-deformation plate comprises the supporting board and a pair of crossbeam portion that is located at the relative both sides of anti-deformation plate and is connected to described supporting board that are used for supporting by the magnetic head installation portion of flexible element described magnetic head.Described crossbeam portion all has at least one bend.Described bend is crooked so that described anti-deformation sheet metal forming is a three-dimensional structure to the direction of the described supporting board of approximate vertical.The one-piece construction of described anti-deformation plate helps the deformation of opposing structure, therefore can successfully stop the flexible element distortion, and the magnetic head fold piece combination that helps to have flexible element avoids cantilever part deformation and salient point to break away from.Moreover described anti-deformation plate makes cantilever part have stable lateral stiffness and longitudinal rigidity, and this makes described magnetic head fold piece combination have good static properties, for example favourable lateral attitude and longitudinal attitude control ability and the shockproof properties that improves.In addition, the structure of above-mentioned cantilever part also provides minimum deflection stiffness for described magnetic head fold piece combination, and therefore when described micro-actuator was driven, described magnetic head rotated and have the displacement of expectation easily, thereby improves the dynamic property of described magnetic head fold piece combination.
Fig. 3-7 has described an embodiment of magnetic head fold piece combination 300 of the present invention.With reference to figure 3 and Fig. 4, described magnetic head fold piece combination 300 mainly comprises the magnetic head 310 with some magnetic heads electrical connections contacts (figure does not show), two piezoelectric elements 320 and the cantilever part 330 that carries or support described magnetic head 310 and piezoelectric element 320 with micro-actuator of some piezoelectric elements electrical connections contacts (figure does not show).Described cantilever part 330 comprises substrate 530, articulated part 630, flexible element 730, anti-deformation plate 830 and the load beam 430 that fits together mutually.Described anti-deformation plate 830 is located between described flexible element 730 and the load beam 430.Described load beam 430 is connected on the described substrate 530 by described articulated part 630.Described flexible element 730 passes described articulated part 630 and arrives described load beam 430.One end of described load beam 430 is connected to and links on the actuating arm substrate 530 of (figure does not show), and the other end supports the tongue area of described flexible element 730.The tongue area of described flexible element 730 provides flexible for described magnetic head 310.In order steadily equably load force to be transferred on the described magnetic head 310 from described load beam, described load beam 430 provides the installation site of the magnetic head 310 of the tongue area that a salient point 431 (as shown in Figure 7) supports described flexible element 730.
With reference to figure 5, the tongue of described flexible element 730 includes the magnetic head installation portion 731 that is used for installing described magnetic head 310, the piezoelectric element installation portion 732 and the neck 733 that is connected described piezoelectric element installation portion 732 and magnetic head installation portion 731 that is used for installing described piezoelectric element 320.Described neck 733 is much narrower than described magnetic head installation portion 731 and described piezoelectric element installation portion 732.Therefore when micro-actuator was driven, described magnetic head installation portion 731 can be around described neck 733 rotations.In addition, described flexible element 730 further comprises some flexible elements-piezoelectricity electrical contact 734a and 734c, some flexible elements-magnetic head electrical contact 735 and the two groups of electricity marks 736 and 737 that are positioned at tongue area.Some piezoelectricity electrical contact of the piezoelectric element 320 of the corresponding described micro-actuator of described some flexible elements-piezoelectricity electrical contact 734a and 734c are provided with, and the magnetic head electrical contact of described some flexible elements-magnetic head electrical contact 735 corresponding described magnetic heads 310 is provided with.Described flexible element 730 and piezoelectric element 320 are electrically connected on ground.
With reference to figure 6, the anti-deformation plate 830 of described magnetic head fold piece combination 300 comprises board 833 behind a supporting board 831, pair of beams portion 832 and.Described pair of beams portion 832 is located at the relative both sides of described anti-deformation plate 830 and is connected to described supporting board 831.Described back board 833 is soldered to described load beam 430 and is fixed between described flexible element 730 and the described load beam 430.Described crossbeam portion 832 front portions from described supporting board 831 extend to described back board 833.
Described crossbeam portion 832 respectively has a shoulder 832a, an arm 832b and a bend 832c.Described shoulder 832a extends laterally from described supporting board 831, and described arm 832b extends perpendicular to described shoulder 832a simultaneously.Described bend 832c is located on the described arm 832b.Particularly, described bend 832c is crooked so that described anti-deformation plate 830 is shaped to a three-dimensional structure to the direction of the described supporting board 831 of approximate vertical.
In the present embodiment, as shown in Figure 7, the bend 832c of described anti-deformation plate 832 is located at the position arranged side by side with the salient point 431 of described load beam 430.Understandably, the bend 832c of described anti-deformation plate 832 also can be located near the front portion of described supporting board 831.As shown in Figure 6, described bend 832c is a U-shaped.Understandably, described bend 832c also can be other shapes, for example V-arrangement, arc or shaped form.Equally understandably, anti-deformation plate 830 of the present invention also can be provided with the bend 832c of some this structures.
With reference to figure 3-6, described magnetic head 310 supports mode local install of the supporting board 831 of described magnetic head 310 and described anti-deformation plate 830 by the described magnetic head 310 of magnetic head installation portion 731 supports with the magnetic head installation portion 731 of flexible element 730 again.Two piezoelectric elements 320 of described micro-actuator are placed in respectively on the piezoelectric element installation portion 732 of described flexible element 730.Some electric connection mode as soldering, metal solder or other suitable manner, are used between described flexible element 730 and the described magnetic head 310 and between described flexible element 730 and the described piezoelectric element 320.Electrical connection between described flexible element 730 and the described magnetic head 310 realizes that by described flexible element-magnetic head electrical contact 735 and described magnetic head electrical contact the electrical connection between described flexible element 730 and the piezoelectric element 320 realizes by flexible element-piezoelectricity electrical contact 734a, 734c and piezoelectricity electrical contact.An end that is formed on the electric mark 736,737 on the described flexible element 730 links to each other with the piezoelectricity electrical contact of described piezoelectric element 320 and the magnetic head electrical contact of described magnetic head 310, and the other end links to each other with control system by the cantilever contact.Therefore, described control system is controlled described micro-actuator and magnetic head 310 respectively by electric mark 736,737.
Fig. 7 is the partial side view of magnetic head fold piece combination 300 shown in Figure 4.Described magnetic head 310 is installed on the magnetic head installation portion 731 of described flexible element 730.Described anti-deformation plate 830 supports described magnetic head 310 by described magnetic head installation portion 731.The salient point 431 of described load beam 430 supports the magnetic head installation portion 731 of described flexible element 730.When 310 flights of described magnetic head at described disk (figure does not show) when going up, described salient point 431 keeps load force always to be applied to the center of described magnetic head 310 equably from described load beam 430, thereby guarantees the flying quality that described magnetic head 310 is good.In the present embodiment, the introduction of bend 830 makes described anti-deformation plate 830 be shaped to a three-dimensional structure, and this not only helps the deformation of opposing structure, and makes cantilever part have stable lateral stiffness, longitudinal rigidity and little deflection stiffness.In addition, when described micro-actuator was driven, this reliable structure of cantilever part made magnetic head rotate and have the displacement of expectation easily.
With reference to figure 8, disc drive unit embodiment according to the present invention, disc drive unit can obtain by assemble case 1010, disk 1020, the Spindle Motor 1030 that is used to rotate described disk 1020, voice coil motor 1060 and the actuating arm 1050 with described magnetic head fold piece combination 300.Because the structure of disc drive unit and assembling process are known by one of ordinary skill in the art, so in the detailed description of this omission about its structure and assembling.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs to the covering scope of technical solution of the present invention to any simple modification, equivalent variations and modification that above embodiment did.
Claims (17)
1. the cantilever part of magnetic head cantilever combination comprises:
Flexible element, described flexible element comprise the magnetic head installation portion that is used to install magnetic head, be used to the neck the piezoelectric element installation portion of piezoelectric element being installed and being used to connect described piezoelectric element installation portion and described magnetic head installation portion;
Load beam, described load beam is by being arranged on the described magnetic head installation portion that salient point on the described load beam supports described flexible element; And
Anti-deformation plate, described anti-deformation plate comprises a supporting board that is used for supporting by the described magnetic head installation portion of described flexible element described magnetic head, a pair of be located at the described relative both sides of anti-deformation plate and be connected to the crossbeam portion of described supporting board and be welded on the described load beam and be fixed on described flexible element and described load beam between back board, described crossbeam portion extends to described back board from the front portion of described supporting board, described crossbeam portion all has at least one bend, and described bend is crooked so that described anti-deformation sheet metal forming is a three-dimensional structure to the direction of vertical described supporting board.
2. cantilever part as claimed in claim 1 is characterized in that: the bend of described anti-deformation plate is located at the position arranged side by side with described salient point.
3. cantilever part as claimed in claim 1 is characterized in that: the bend of described anti-deformation plate is located near the front portion of described supporting board.
4. cantilever part as claimed in claim 1 is characterized in that: the bend of described anti-deformation plate is U-shaped, V-arrangement or arc.
5. cantilever part as claimed in claim 1 is characterized in that: described pair of beams portion respectively has the arm that a shoulder that extends laterally from described supporting board and extend perpendicular to described shoulder.
6. cantilever part as claimed in claim 5 is characterized in that: described bend is located on the described arm.
7. the magnetic head fold piece combination of a disc drive unit comprises:
Magnetic head;
Micro-actuator with piezoelectric element; And
Support the cantilever part of described magnetic head and described micro-actuator, described cantilever part comprises flexible element, anti-deformation plate and load beam, described flexible element comprises the magnetic head installation portion that is used to install described magnetic head, be used to the neck the piezoelectric element installation portion of described piezoelectric element being installed and being used to connect described piezoelectric element installation portion and described magnetic head installation portion, described anti-deformation plate comprises a supporting board that is used for supporting by the described magnetic head installation portion of described flexible element described magnetic head, a pair of be located at the described relative both sides of anti-deformation plate and be connected to the crossbeam portion of described supporting board and be welded on the described load beam and be fixed on described flexible element and described load beam between back board, described crossbeam portion extends to described back board from the front portion of described supporting board, described crossbeam portion all has at least one bend, described bend is crooked so that described anti-deformation sheet metal forming is a three-dimensional structure to the direction of vertical described supporting board, and described load beam is by being arranged on the described magnetic head installation portion that salient point on the described load beam supports described flexible element.
8. magnetic head fold piece combination as claimed in claim 7 is characterized in that: the bend of described anti-deformation plate is located at the position arranged side by side with described salient point.
9. magnetic head fold piece combination as claimed in claim 7 is characterized in that: the bend of described anti-deformation plate is located near the front portion of described supporting board.
10. magnetic head fold piece combination as claimed in claim 7 is characterized in that: the bend of described anti-deformation plate is U-shaped, V-arrangement or arc.
11. magnetic head fold piece combination as claimed in claim 7 is characterized in that: described pair of beams portion respectively has the arm that a shoulder that extends laterally from described supporting board and extend perpendicular to described shoulder.
12. magnetic head fold piece combination as claimed in claim 11 is characterized in that: described bend is located on the described arm.
13. a disc drive unit comprises:
Magnetic head fold piece combination;
The actuating arm that connects described magnetic head fold piece combination;
Disk; And
Rotate the Spindle Motor of described disk;
It is characterized in that: described magnetic head fold piece combination comprises:
Magnetic head;
Micro-actuator with piezoelectric element; And
Support the cantilever part of described magnetic head and described micro-actuator, described cantilever part comprises flexible element, anti-deformation plate and load beam, described flexible element comprises the magnetic head installation portion that is used to install described magnetic head, be used to the neck the piezoelectric element installation portion of described piezoelectric element being installed and being used to connect described piezoelectric element installation portion and described magnetic head installation portion, described anti-deformation plate comprises a supporting board that is used for supporting by the described magnetic head installation portion of described flexible element described magnetic head, a pair of be located at the described relative both sides of anti-deformation plate and be connected to the crossbeam portion of described supporting board and be welded on the described load beam and be fixed on described flexible element and described load beam between back board, described crossbeam portion extends to described back board from the front portion of described supporting board, described crossbeam portion all has at least one bend, described bend is crooked so that described anti-deformation sheet metal forming is a three-dimensional structure to the direction of vertical described supporting board, and described load beam is by being arranged on the described magnetic head installation portion that salient point on the described load beam supports described flexible element.
14. disc drive unit as claimed in claim 13 is characterized in that: the bend of described anti-deformation plate is located at the position arranged side by side with described salient point.
15. disc drive unit as claimed in claim 13 is characterized in that: the bend of described anti-deformation plate is U-shaped, V-arrangement or arc.
16. disc drive unit as claimed in claim 13 is characterized in that: described pair of beams portion respectively has the arm that a shoulder that extends laterally from described supporting board and extend perpendicular to described shoulder.
17. disc drive unit as claimed in claim 16 is characterized in that: described bend is located on the described arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101698190A CN101430884B (en) | 2007-11-07 | 2007-11-07 | Cantilever member, magnetic head tab combination and disk drive unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101698190A CN101430884B (en) | 2007-11-07 | 2007-11-07 | Cantilever member, magnetic head tab combination and disk drive unit |
Publications (2)
| Publication Number | Publication Date |
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| CN101430884A CN101430884A (en) | 2009-05-13 |
| CN101430884B true CN101430884B (en) | 2011-12-21 |
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| CN2007101698190A Expired - Fee Related CN101430884B (en) | 2007-11-07 | 2007-11-07 | Cantilever member, magnetic head tab combination and disk drive unit |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005174509A (en) * | 2003-12-15 | 2005-06-30 | Tdk Corp | Suspension, head supporting mechanism, head arm assembly, and disk drive apparatus provided with head arm assembly |
| CN1252683C (en) * | 2002-10-02 | 2006-04-19 | 西加特技术有限责任公司 | Sagnetic head universal-joint assembly with low-cost |
-
2007
- 2007-11-07 CN CN2007101698190A patent/CN101430884B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1252683C (en) * | 2002-10-02 | 2006-04-19 | 西加特技术有限责任公司 | Sagnetic head universal-joint assembly with low-cost |
| JP2005174509A (en) * | 2003-12-15 | 2005-06-30 | Tdk Corp | Suspension, head supporting mechanism, head arm assembly, and disk drive apparatus provided with head arm assembly |
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| Publication number | Publication date |
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| CN101430884A (en) | 2009-05-13 |
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