CN1956061A - Bracket, magnetic head flexible piece containing the bracket and magnetic disk drive unit - Google Patents
Bracket, magnetic head flexible piece containing the bracket and magnetic disk drive unit Download PDFInfo
- Publication number
- CN1956061A CN1956061A CN 200510118930 CN200510118930A CN1956061A CN 1956061 A CN1956061 A CN 1956061A CN 200510118930 CN200510118930 CN 200510118930 CN 200510118930 A CN200510118930 A CN 200510118930A CN 1956061 A CN1956061 A CN 1956061A
- Authority
- CN
- China
- Prior art keywords
- magnetic head
- flexible element
- cantilever part
- outstanding
- holding
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Images
Landscapes
- Supporting Of Heads In Record-Carrier Devices (AREA)
- Moving Of Heads (AREA)
Abstract
A cantilever component used in magnetic head folded plate combination consists flexible element including tongue piece for bearing magnetic head and holding unit for suspension-holding tongue piece from flexible element. It is featured as setting a numbers of connection contacts being connected to control system at one end of flexible element and a numbers of cables at another end of flexible element, setting width of holding unit to be less than width of tongue piece. The magnetic disc driving unit containing said magnetic head folded plate combination is also disclosed.
Description
Technical field
The present invention relates to a kind of disc drive unit, relate to specifically a kind of magnetic head fold piece combination with cantilever part of optimizing rigidity (head gimbal assembly, HGA); The invention still further relates to the magnetic head fold piece combination that contains a kind of cantilever part, this cantilever part has the cable support frame (tracesupport bridge) that is used for plural cable on the supporting cantilever part.
Background technology
A kind of common information storing device is a disk drive system of utilizing magnetic media storage data.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, increases the density of track such as the mode by track width on the minimizing disk or track pitch.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.
As the method that improves the read/write head position control, once developed many Dual-drive systems that are used to improve access speed and read/write head bearing accuracy on the suitable track of compact disk in the past.This Dual-drive system generally include keynote coil motor driver (voice-coil motor actuator, VCM) and secondary microdrive, such as PZT element microdrive (being the piezoelectric element microdrive).This voice coil motor driver is controlled by servo-control system, and this servo-control system causes the actuating arm rotation, and the carrying read/write head is so that be positioned read/write head on the track suitable on the memory disc on this actuating arm.PZT element microdrive and voice coil motor driver are used common raising access speed and realize the fine setting of read/write head position on track.Voice coil motor driver is to the position coarse adjustment of read/write head, and PZT element microdrive is to the accurate adjustment of read/write head with respect to the position of disk.By the cooperation of two drivers, realize data efficient and accurate read-write operation on memory disc jointly.
Fig. 1 a is depicted as the disk drive system that typically has the magnetic head displacement control system.Fig. 1 a has showed the part of traditional magnetic disk driver element, and disk 101 is installed on the rotation motor 102 and by its rotation.Carry magnetic head fold piece combination 100 on the voice coil motor arm 104, this magnetic head fold piece combination 100 comprises microdrive 105 and read/write head 103.The motion of one voice coil motor control voice coil motor arm 104, and then control head 103 moving between the lip-deep track of disk 101 finally realize read/write head data write on disk 101.In the time of in working order, form aerodynamic force between the disk 101 of the magnetic head 103 that comprises read/write head and rotation and contact, and produce lift.The mutual balance of elastic force that the cantilever part by magnetic head fold piece combination 100 of this lift and opposite sign but equal magnitude applies, and then cause in the overall diameter stroke of motor arm 104 rotations, form and keep predetermined flying height in the surface of the disk 101 that rotates.
Fig. 1 b is depicted as the magnetic head fold piece combination 100 of the disc drive unit that contains dual drive among Fig. 1 a.Yet because the inherent error of voice coil motor and magnetic head cantilever combination, magnetic head 103 can't be realized fast and accurate position control, thereby influence the performance that read/write head is is accurately read and write data on the disk.For this reason, increase above-mentioned PZT element microdrive 105, so that improve the position control accuracy of magnetic head and read/write head.More particularly, with respect to voice coil motor driver, this PZT element microdrive is adjusted the displacement of magnetic head 103 with littler amplitude, so as the compensation voice coil motor and (or) resonance error of magnetic head cantilever combination.This PZT element microdrive makes that using littler track pitch becomes possibility, and the track density (TPI, the track quantity that per inch is contained) of disc drive unit can be improved 50%, can reduce the positioning time of magnetic head simultaneously.Therefore, PZT element microdrive can increase substantially the surface recording density of information storage magnetic disk.
With reference to figure 1a and Fig. 1 b, a kind of known microdrive is a U-shaped microdrive 105.This U-shaped microdrive 105 comprises that two are immobilizated in wherein limit arm 107 with magnetic head 103.Motion by limit arm 107 makes magnetic head 103 produce displacement.This PZT element microdrive 105 can be littler amplitude correct the displacement of magnetic head 103 because on the described limit arm 107 the PZT element is installed, will makes this PZT deformed element from the voltage of control system, and then adjust head position.
Further with reference to figure 1c, traditional PZT element microdrive 105 comprises the U-shaped ceramic frame with two ceramic limit arms 107, wherein on each limit arm piezoelectric element is installed all.With reference to figure 1b-1c, this PZT element microdrive 105 physically is installed on the flexible element 114.Three are electrically connected and receive 109 (gold goal welding or tin ball bonding meet gold ball bonding or solder ball bonding, GBB or SBB) are fixed on this PZT element microdrive 105 on the cantilever cable 910 that is positioned at arm 107 both sides, above-mentioned limit.In addition, four Metal Ball 108 (GBB or SBB) are installed to magnetic head 103 on this cantilever cable 110.
Fig. 1 d has briefly showed the exemplary flow that magnetic head 103 is assembled to microdrive 105.Shown in Fig. 1 d, this magnetic head 103 is connected to two precalculated positions 106 on the described both sides arm 107 by the epoxide-resin glue part.This connection makes the motion of magnetic head 103 depend on the motion of the limit arm 107 of described PZT element microdrive 105.Piezoelectric element 116 is installed on each limit arm 107 of this microdrive, thereby by exciting above-mentioned piezoelectric element to make magnetic head 103 produce controllable moving.When applying voltage by cantilever cable 910, described PZT element expands or shrinks, and causes the both sides arm 107 of U-shaped microdrive framework to produce distortion, therefore makes magnetic head 103 move on the track of disk, so that accurately adjust the position of described read/write head.In this way, can realize the controllable displacement of magnetic head 103, so that realize fine position.
In the infotech industry, as everyone knows, quick increase along with hard drive capacity, and the actual selling price of hard disk drive is more and more lower, for catering to market, manufacturer is developing the method that can reduce material cost always, and a typical example is to do magnetic head more little, such as accomplishing the magnetic head of 50% size from the magnetic head of 100% size, present magnetic head is the magnetic head of 30% size.Simultaneously, industry is interested in the magnetic head of 20% size, because the size of magnetic head reduces, the size of air-supported one side also reduces simultaneously, and forcing magnetic head flight height constantly to reduce to the demand of higher storage capacity hard disk drive, this is a huge challenge to the shape of magnetic head air bearing face and the static parameter design of cantilever part such as rigidity.Because air-supported limitation of design, cantilever part need have more and more littler rigidity, and especially when adopting microdrive, the design of this cantilever part becomes more and more difficult, therefore need be suitable for the method and the optimal design of small size magnetic head.
Therefore be necessary to provide a kind of cantilever part of rigidity, the magnetic head fold piece combination that contains this cantilever part and disc drive unit optimized, to overcome the deficiencies in the prior art.
Summary of the invention
One aspect of the present invention is to provide a kind of cantilever part of optimizing rigidity that has, and makes the magnetic head that is installed on this cantilever part have good flight stability and resonance performance.
The present invention is to provide a kind of magnetic head fold piece combination of optimizing rigidity that has on the other hand, makes its magnetic head have good flight stability and resonance performance.
Another aspect of the invention is to provide a kind of disc drive unit with big servo bandwidth and capacity.
For achieving the above object, a kind of cantilever part that is used for magnetic head fold piece combination of the present invention comprises flexible element, and an end of this flexible element has some connecting terminals, so that this flexible element is connected with control system, the other end of this flexible element has some plural cables.This flexible element also comprises the tongue piece that is used for the fixing magnetic head and with this tongue piece outstanding outstanding portion of holding of holding on described flexible element, it is littler than the width of described tongue piece wherein should outstanding to hold the width of portion.In the present invention, this flexible element also comprises the top support bar that is connected with the described outstanding zone line of holding portion and two side support bars that are connected in these support bar two ends, top.In one embodiment, the width of this top support bar is greater than 0.085 millimeter.The width of this side support bar is greater than 0.10 millimeter.Should outstanding hold the width of portion between the 0.5-0.9 millimeter.
In the present invention, this cantilever part also comprises the load beam with the small embossment that is used to support described tongue piece.As one embodiment of the invention, this small embossment is on the described outstanding fillet of holding between portion and the tongue piece.In another embodiment, described small embossment at described tongue piece with respect to a described outstanding side of holding the fillet between portion and the tongue piece.This small embossment is the bigger the better with outstanding distance of holding between the edge that portion and tongue piece be connected, to avoid the displacement of magnetic head in the z direction.This flexible element comprises that also at least one is used to carry the cable support frame of described plural cable.In one embodiment of the invention, this cable support frame is made by polyimide (PI) material.
A kind of magnetic head fold piece combination of the present invention comprises: magnetic head; Be used to carry the cantilever part of this magnetic head; Wherein this cantilever part comprises: flexible element, this flexible element one end have some connecting terminals of being connected with control system of being used for, and the other end has plural cable; This flexible element also comprises: the tongue piece that is used to carry magnetic head; Be used for described tongue piece from the outstanding outstanding portion of holding of holding of described flexible element; Wherein, this outstanding width of portion width of holding less than tongue piece.
A kind of disc drive unit of the present invention comprises: magnetic head fold piece combination; The actuating arm that is connected with this magnetic head fold piece combination; Disk; And the Spindle Motor of this disk rotation of driving.Wherein this magnetic head fold piece combination comprises: magnetic head and be used to carry the cantilever part of this magnetic head; Wherein this cantilever part comprises: flexible element, one end have some connecting terminals of being connected with control system of being used for, and the other end has plural cable; This flexible element also comprises: the tongue piece that is used to carry magnetic head; Be used for described tongue piece from the outstanding outstanding portion of holding of holding of described flexible element; Wherein, this outstanding width of portion width of holding less than tongue piece.
Compare with conventional art, cantilever part of the present invention has structure improved flexible element, thereby makes this cantilever part obtain the rigidity of optimizing, and for example longitudinal rigidity, lateral stiffness reach towards rigidity.Promptly this has structure improved flexible element and makes the longitudinal rigidity of described cantilever part and lateral stiffness diminish, and then becomes greatly towards rigidity, thereby guarantees that magnetic head has good flying quality, and this cantilever part self then has good resonance performance.Correspondingly, good resonance performance makes the servo bandwidth of hard disk drive and the disk storage performance of disc drive unit be improved.In addition, this flexible element comprises that also at least one is used for described plural cable is carried on the cable support frame of cantilever part, this cable support frame will stop described plural cable to produce distortion and reduce cable vibration, thereby guarantee that the disc drive unit with this flexible element has good static state and dynamic property.And, this cable support frame also can improve described flexible element towards rigidity.Correspondingly, the resonance qualitly with disc drive unit of this flexible element can improve, and the disk storage performance of described disc drive unit is improved.
Description of drawings
Fig. 1 a is the partial perspective view of traditional magnetic disk driver element.
Fig. 1 b is traditional magnetic head fold piece combination (head gimbal assembly, stereographic map HGA).
Fig. 1 c is the partial enlarged drawing of magnetic head fold piece combination shown in Fig. 1 b.
Fig. 1 d has showed a magnetic head has been inserted into overview flow chart in the microdrive of magnetic head fold piece combination shown in Fig. 1 b.
Fig. 2 is the stereographic map of the cantilever part of the described magnetic head fold piece combination of first embodiment of the invention.
Fig. 3 is the three-dimensional exploded view of cantilever part shown in Figure 2.
Fig. 4 is the stereographic map of the flexible element of cantilever part shown in Figure 3.
Fig. 5 is the outstanding longitudinal rigidity of width c of portion and cantilever part and the graph of relation between the lateral stiffness held of flexible element shown in Figure 4.
Fig. 6 for flexible element shown in Figure 4 outstanding hold width c of portion and cantilever part towards the graph of relation between the rigidity.
Fig. 7 is top support bar width w and the longitudinal rigidity of cantilever part and the graph of relation between the lateral stiffness of flexible element shown in Figure 4.
Fig. 8 be the top support bar width w of flexible element shown in Figure 4 and cantilever part towards the graph of relation between the rigidity.
Fig. 9 is each limit support bar width y and the longitudinal rigidity of cantilever part and the graph of relation between the lateral stiffness of flexible element shown in Figure 4.
Figure 10 be each the limit support bar width y of flexible element shown in Figure 4 and cantilever part towards the graph of relation between the rigidity.
Figure 11 is the partial perspective view of flexible element shown in Figure 4, has showed the position relation between the small embossment on the load beam of this flexible element and cantilever part shown in Figure 2.
Figure 12 for when the small embossment of cantilever part when warp-wise between the cantilever tongue piece has different numerical value apart from d, flexible element shown in Figure 11 outstanding held width c of portion and the graph of relation of z between displacement accordingly.
Figure 13 for when cantilever part shown in Figure 2 when rigidity has different numerical value, the resonance gain of this cantilever part and the graph of relation between the frequency.
Figure 14 for when cantilever part shown in Figure 2 when rigidity has different numerical value, the resonance phase place of this cantilever part and the graph of relation between the frequency.
Figure 15 has the partial perspective view of the flexible element of two cable support framves for the described every side of another embodiment of the present invention.
Figure 16 has the partial perspective view of the flexible element of a cable support frame for the described every side of another embodiment of the present invention.
Figure 17 has by the partial perspective view of the flexible element of the cantilever tongue piece of weight reduction for another embodiment of the present invention is described.
Figure 18 is the described three-dimensional exploded view that contains the magnetic head fold piece combination of flexible element shown in Figure 2 of one embodiment of the invention.
Figure 19 is the described stereographic map that contains the disc drive unit of magnetic head fold piece combination shown in Figure 180 of one embodiment of the 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 with improvement flexible element, thereby obtain the rigidity of optimization, especially longitudinal rigidity (pitch stiffness), lateral stiffness (roll stiffness) reach towards rigidity (lateral stiffness), so make when the small size magnetic head that installs flies on the disk of rotation, this magnetic head have good dynamically, static properties and stable flying height.In addition, raising along with cantilever part rigidity, the small embossment of load beam is also optimized the Support Position of cantilever part, when loading force increases, the cantilever tongue piece distortion that is caused by the displacement of z direction reduces equally, this will make flying magnetic head and microdrive more stable work, thereby stop the inessential noise that is caused the servomechanism installation that contacts and then cause between flexible element and the magnetic head by the moderate finite deformation of flexible element.Therefore, cantilever part of the present invention is intended to optimize the structure of this cantilever part, so that obtain good performance when the small size magnetic head is installed.
Some embodiment of cantilever part of the present invention are described below.With reference to figure 2 and Fig. 3, according to one embodiment of present invention, cantilever part 1 comprises load beam 17, flexible element 13, articulated part 15 and substrate 11.Has small embossment formed thereon 329 on this load beam 17.One end of this flexible element 13 has some connecting terminals 308 of being connected with control system (figure do not show) of being used for, and the other end of this flexible element 13 has plural cable 309,311.
With reference to figure 4, this flexible element 13 also comprises and is used to keep the cantilever tongue piece 328 of magnetic head and this cantilever tongue piece 328 is hanged the outstanding portion 317 of holding of holding on this flexible element 13.In the present invention, described cantilever tongue piece 328 comprises some connecting terminal 330 and some connecting terminals 390 that are used to connect above-mentioned plural cable 311 that are used to connect above-mentioned plural cable 309.The described outstanding width of the width c of portion 317 of holding less than described cantilever tongue piece 328.Here, described cantilever tongue piece 328 is hanged and is held in described flexible element 13 by the described outstanding portion 317 of holding, thereby forms an elastic construction.Because it is less outstanding to hold the width c of portion 317, therefore make described cantilever tongue piece 328 have less vertically and lateral stiffness, when magnetic head is installed to cantilever tongue piece, this less vertically and lateral stiffness will guarantee the stability of flying magnetic head.
With reference to figure 5, this figure has showed that the outstanding of flexible element 13 hold the width c of portion 317 and contain the longitudinal rigidity of these flexible element 13 cantilever parts 1 and the relation curve between the lateral stiffness.Here, the relation between curve 297 expression width c and the longitudinal rigidity, the relation between curve 298 expression width c and the lateral stiffness.As known in the figure, contain all reducing and reduce of the longitudinal rigidity of cantilever part 1 of flexible element 13 and lateral stiffness with the outstanding width c that holds portion 317 with corresponding.In this embodiment, the described outstanding portion 317 of holding is rectangular.Obviously, this outstanding held portion 317 and also can have other in order to reduce the suitable shape of described cantilever part 1 rigidity.With reference to figure 6, this figure has showed flexible element 13 shown in Figure 4 outstanding hold the width c of portion 317 and contain this flexible element 13 cantilever part 1 towards the relation curve between the rigidity.As known in the figure, contain flexible element 13 cantilever part 1 towards rigidity with the outstanding width c that holds portion 317 reduce and corresponding reducing.
Usually, the cantilever part of small size magnetic head is installed, such as the magnetic head that contains 30% size or less than the magnetic head of 30% size, can satisfy following condition and guarantee that magnetic head has good flight stability, this cantilever part self then has good resonance performance: contain the longitudinal rigidity of cantilever part 1 of flexible element 13 and lateral stiffness all less than 1.00 μ N.m/degree; Contain flexible element 13 cantilever part 1 towards rigidity then greater than 1.00 μ N.m/degree.Less longitudinal rigidity/lateral stiffness more helps the flight stability of magnetic head, and bigger more helps magnetic head fold piece combination (head gimbal assembly, resonance performance HGA) towards rigidity.Figure 13-14 showed the resonance performance of magnetic head fold piece combination and cantilever part flexible element towards the graph of relation between the rigidity.In Figure 13, curve 905,902,901 and 903 is to be respectively 1.05,1.15,1.25 and relevant resonance gain trace during 1.35N/mm when cantilever part towards rigidity.In Figure 14, curve 907,910,909 and 908 is to be respectively 1.05,1.15,1.25 and relevant resonance phase curve during 1.35N/mm when cantilever part towards rigidity.By this two figure as can be known, when the numerical value towards rigidity approaches 1.00N/mm, such as 1.05N/mm (reference curve 905,907), peak value 904/906 will appear in the low frequency stage in resonance, this means with respect to having the higher resonance that produces towards the parts of rigidity, the resonance degradation, this will influence the dynamic property of magnetic head fold piece combination and the servo performance of disc driver.According to this fact also with reference to figure 5-6 as can be known: this outstanding width c that holds portion 317 is preferably between the 0.5mm-0.9mm.Be appreciated that this outstanding width c that holds portion 317 also can adjust according to reality requirement and area of bed.
With reference to figure 4, this flexible element 13 also can be included in outstanding centre of holding portion 317 hold the top support bar 319 that portion 317 is connected and two side support bars 315 that are connected in these top support bar 319 two ends with should hanging.This top support bar 319, two side support bars 315, outstandingly hold portion 317 and flexible element 13 constitutes two grooves 340.In one embodiment, described groove 340 is symmetrically distributed in described outstanding both sides of holding portion 317.In the present invention, the distance between described top support bar 319 and the cantilever tongue piece 328, promptly outstanding length of holding portion 317 can change according to actual needs.
In the present invention, described top support bar 319 has width w, and rigidity, especially longitudinal rigidity, lateral stiffness that this width w also influences the cantilever part 1 that contains flexible element 13 reach towards rigidity.With reference to figure 7, this figure has showed the width w of top support bar 319 and has contained the longitudinal rigidity of cantilever part 1 of flexible element 13 and the relation curve between the lateral stiffness.Here, the relation curve between curve 292 expression width w and the longitudinal rigidity, the relation curve between curve 291 expression width w and the lateral stiffness.As seen from the figure, contain all reducing and reduce of the longitudinal rigidity of cantilever part 1 of flexible element 13 and lateral stiffness with the width w of top support bar 319 with corresponding.With reference to figure 8, this figure showed the width w of top support bar 319 and contain flexible element 13 cantilever part 1 towards the relation curve between the rigidity.As known in the figure, contain flexible element 13 cantilever part 1 towards rigidity reducing and reduce with the width w of top support bar 319 with corresponding.Similarly, for guaranteeing that magnetic head has good flight stability and cantilever part has good resonance performance, the longitudinal rigidity and the lateral stiffness that contain the cantilever part 1 of flexible element 13 all should be less than 1.00 μ N.m/degree; Contain flexible element 13 cantilever part 1 then should be towards rigidity greater than 1.00 μ N.m/degree.According to this fact also with reference to figure 7-8 as can be known: the width w of this top support bar 319 is more preferably greater than 0.085mm.The width w that is appreciated that this top support bar 319 can require and the area of bed adjustment according to reality.
In the present invention, each side support bar 315 all has width y, and rigidity, especially longitudinal rigidity, lateral stiffness that this width y also influences the cantilever part 1 that contains flexible element 13 reach towards rigidity.With reference to figure 9, this figure has showed the width y of side support bar 315 and has contained the longitudinal rigidity of cantilever part 1 of flexible element 13 and the relation curve between the lateral stiffness.Here, the relation curve between curve 294 expression width y and the longitudinal rigidity, the relation curve between curve 293 expression width y and the lateral stiffness.As seen from the figure, contain all reducing and reduce of the longitudinal rigidity of cantilever part 1 of flexible element 13 and lateral stiffness with the width y of side support bar 315 with corresponding.With reference to Figure 10, this figure showed the width y of side support bar 315 and contain flexible element 13 cantilever part 1 towards the relation curve between the rigidity.As seen from the figure, contain flexible element 13 cantilever part 1 towards rigidity reducing and reduce with the width y of side support bar 315 with corresponding.Similarly, for guaranteeing that magnetic head has good flight stability and cantilever part has good resonance performance, the longitudinal rigidity and the lateral stiffness that contain the cantilever part 1 of flexible element 13 all should be less than 1.00 μ N.m/degree; Contain flexible element 13 cantilever part 1 then should be towards rigidity greater than 1.00 μ N.m/degree.According to this situation also with reference to figure 9-10 as can be known: the width y of this side support bar 315 is more preferably greater than 0.10mm.Be appreciated that ground, the width y of this side support bar 315 can require and the area of bed adjustment according to reality.
In the present invention, with reference to figure 2-4, when this flexible element 13 being assembled on load beam 17, articulated part 15 and the substrate 11 when forming cantilever part 1, the small embossment 329 on the described load beam 17 will support and should hang the portion 317 of holding, and the maintenance loading force is applied to the central area of magnetic head all the time.With reference to Figure 11, because two grooves 340 are symmetrically formed the both sides of holding portion 317 in outstanding, therefore having formed with described small embossment 329 on cantilever part 1 is the elastic construction of supporting pivot, according to lever principle, owing to be in outstanding distortion of holding the parts and the tongue piece of state, from described small embossment 329 to cantilever tongue piece 328 with hang hold form the edge being connected of portion 317 apart from d influence is installed in the z of described flexible element 13 upper magnetic heads to displacement.With reference to Figure 12, this figure has showed when having different numerical value apart from d, the width c of flexible element 13 and the corresponding relation curve of z between displacement.Here, the relation curve of curve 200 expressions when being 0.2mm apart from d; The relation curve of curve 201 expressions when being 0mm apart from d.As seen from the figure: when the described outstanding width c that holds portion 317 was identical, reducing then apart from d, the z of magnetic head also reduced to displacement.Therefore, when other parameter of cantilever part 1 is identical, preferably approach zero apart from d, with the z that prevents magnetic head to displacement.
With reference to Figure 15, according to another embodiment of the invention, flexible element 13 ' has and flexible element 13 similar structures shown in Figure 2, but may further include two the cable support framves 270 (trace support bridge) that are positioned at this flexible element 13 ' each side, be used to support plural cable 309,311.In this embodiment, described cable support frame 270 is strip and extends from side support bar 315, and has enough length and carry described plural cable 309,311.Optimally, this cable support frame 270 can be made by polyimide (PI) material, thereby has enough intensity and rigidity.Be appreciated that ground, described cable support frame 270 can be formed so that carry described plural cable 309,311 by other suitable material.Because the described plural cable 309,311 of described cable support frame 270 carryings, therefore in manufacture process, can avoid described plural cable 309,311 to produce distortion, and reduced when the conductor vibration of flying magnetic head during in disk, so just guarantee to be used for the static state and the dynamic property of the magnetic head fold piece combination with flexible element 13 ' of disc driver.And, described cable support frame 270 can improve simultaneously flexible element 13 towards rigidity, this help to improve magnetic head dynamically and static properties.
With reference to Figure 16, according to still another embodiment of the invention, flexible element 13 " have and flexible element 13 shown in Figure 15, similarly structure is positioned at this flexible element 13 but may further include " each side, be used to support the single cable support frame 270 of plural cable 309,311.This cable support frame 270 extends out from side support bar 315 equally.The quantity that is appreciated that described cable support frame 270 can change according to the actual needs of flexible element and cantilever part.In addition, described cable support frame 270 can have other in order to carry the suitable shape of described plural cable 309,311.
With reference to Figure 17, according to one embodiment of present invention, flexible element 13 have and flexible element 13 similar structures shown in Figure 2, but have different cantilever tongue piece 328 ', with respect to cantilever tongue piece shown in Figure 4 328, this cantilever tongue piece 328 ' has the structure of weight reduction.In one embodiment, as shown in figure 17, this cantilever tongue piece 328 ' is trapezoidal shape.Yet the shape of this cantilever tongue piece 328 ' is not limited thereto, and any suitable shape is feasible to reduce corresponding weight but can have, and makes flexible element 13 obtain the rigidity of optimizing.In this embodiment, described cantilever tongue piece 328 ' has the structure of weight reduction, makes the overall weight of flexible element 13 and cantilever part alleviate, and the anti-seismic performance of the disc driver with this flexible element is improved.
With reference to Figure 18, according to one embodiment of present invention, magnetic head fold piece combination (head gimbal assembly, HGA) comprise magnetic head 203, comprise with magnetic head 203 be immobilizated in both sides arm 217 therebetween U-shaped microdrive 205, be used to carry the cantilever part 1 of described magnetic head 203 and microdrive 205.Motion by described limit arm 217 makes magnetic head 203 produce displacement.In this embodiment, microdrive 205 comprises the U-shaped ceramic frame of being made up of two limit arms 217, wherein on each limit arm 217 piezoelectric element 216 is installed all.Such as epoxide-resin glue, physical connection is to flexible element 13 by glue for this microdrive 205.Some be electrically connected receive (gold goal welding or tin ball bonding connect, GBB or SBB, figure does not show) this PZT element microdrive 205 is fixed on the cantilever cable 311 that is positioned at arm 217 both sides, above-mentioned limit.In addition, some electrical connection Metal Ball (GBB or SBB, figure does not show) are installed to magnetic head 203 on the cantilever cable 309.In the present invention, described microdrive 205 is not limited to the U-shaped microdrive, and the microdrive that other is suitable can be used in the present invention such as film-type microdrive, metallic support type microdrive (stupalith that replaces U-shaped microdrive 205).Be appreciated that this magnetic head fold piece combination also can not have microdrive, only (voice coil motor VCM) drives the generation displacement to described magnetic head 203 by the voice coil motor of disc driver.
According to one embodiment of present invention, with reference to Figure 19,, housing 508, disk 501, rotation motor 502, voice coil motor (VCM) 507 and magnetic head fold piece combination of the present invention 2 form disc drive unit 5 by being assembled up.Because the structure and/or the assemble flow of disc drive unit of the present invention are familiar with by the industry those of ordinary skill, are not described in detail in this.
Above invention has been described in conjunction with most preferred embodiment, but the present invention is not limited to the embodiment of above announcement, and should contain various modification, equivalent combinations of carrying out according to essence of the present invention.
Claims (21)
1. cantilever part that is used for magnetic head fold piece combination, it comprises:
Flexible element, this flexible element one end have some connecting terminals of being connected with control system of being used for, and the other end has plural cable; It is characterized in that this flexible element also comprises:
The tongue piece of carrying magnetic head;
Described tongue piece is hanged the outstanding portion of holding of holding from described flexible element; Wherein, this outstanding width of portion width of holding less than tongue piece.
2. cantilever part according to claim 1 is characterized in that: described flexible element also comprises the top support bar that is connected with the described outstanding zone line of holding portion and two side support bars that are connected in these support bar two ends, top.
3. cantilever part according to claim 2 is characterized in that: the width of described top support bar is greater than 0.085 millimeter.
4. cantilever part according to claim 2 is characterized in that: the width of described side support bar is greater than 0.10 millimeter.
5. cantilever part according to claim 1 is characterized in that: described hanging held the width of portion between the 0.5-0.9 millimeter.
6. cantilever part according to claim 1 is characterized in that: described cantilever part also comprises the load beam with the small embossment that is used to support described tongue piece, and wherein this small embossment is placed in and supports described outstanding position of holding portion.
7. cantilever part according to claim 6 is characterized in that: described small embossment is on the described outstanding fillet of holding between portion and the tongue piece.
8. cantilever part according to claim 6 is characterized in that: described small embossment at described tongue piece with respect to a described outstanding side of holding the fillet between portion and the tongue piece.
9. cantilever part according to claim 2 is characterized in that: described flexible element comprises that also at least one is used to carry the cable support frame of described plural cable.
10. cantilever part according to claim 9 is characterized in that: described cable support frame is made by polyimide (PI) material.
11. a magnetic head fold piece combination comprises:
Magnetic head;
Be used to carry the cantilever part of this magnetic head; Wherein this cantilever part comprises:
Flexible element, this flexible element one end have some connecting terminals of being connected with control system of being used for, and the other end has plural cable; It is characterized in that this flexible element also comprises:
Be used to carry the tongue piece of magnetic head;
Be used for described tongue piece from the outstanding outstanding portion of holding of holding of described flexible element; Wherein, this outstanding width of portion width of holding less than tongue piece.
12. magnetic head fold piece combination according to claim 11 is characterized in that: described cantilever part also comprises the load beam with the small embossment that is used to support described tongue piece, and wherein this small embossment is placed in and supports described outstanding position of holding portion.
13. magnetic head fold piece combination according to claim 11 is characterized in that: described flexible element also comprises the top support bar that is connected with the described outstanding zone line of holding portion and two side support bars that are connected in these support bar two ends, top.
14. magnetic head fold piece combination according to claim 13 is characterized in that: the width of described top support bar is greater than 0.085 millimeter.
15. magnetic head fold piece combination according to claim 13 is characterized in that: the width of described side support bar is greater than 0.10 millimeter.
16. magnetic head fold piece combination according to claim 12 is characterized in that: described small embossment is on the described outstanding fillet of holding between portion and the tongue piece.
17. magnetic head fold piece combination according to claim 12 is characterized in that: described small embossment at described tongue piece with respect to a described outstanding side of holding the fillet between portion and the tongue piece.
18. magnetic head fold piece combination according to claim 12 is characterized in that: this flexible element comprises that also at least one is used to carry the cable support frame of described plural cable.
19. magnetic head fold piece combination according to claim 18 is characterized in that: this cable support frame is made by polyimide (PI) material.
20. magnetic head fold piece combination according to claim 12 is characterized in that: this magnetic head fold piece combination also comprises and is used for fixing magnetic head and makes magnetic head produce the microdrive of displacement.
21. a disc drive unit comprises:
Magnetic head fold piece combination;
The actuating arm that is connected with this magnetic head fold piece combination;
Disk; And
Drive the Spindle Motor of this disk rotation; Wherein this magnetic head fold piece combination comprises:
Magnetic head and be used to carry the cantilever part of this magnetic head; Wherein this cantilever part comprises:
Flexible element, one end have some connecting terminals of being connected with control system of being used for, and the other end has plural cable; It is characterized in that this flexible element also comprises:
Be used to carry the tongue piece of magnetic head;
Be used for described tongue piece from the outstanding outstanding portion of holding of holding of described flexible element; Wherein, this outstanding width of portion width of holding less than tongue piece.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510118930 CN1956061A (en) | 2005-10-27 | 2005-10-27 | Bracket, magnetic head flexible piece containing the bracket and magnetic disk drive unit |
| JP2006291033A JP2007122861A (en) | 2005-10-27 | 2006-10-26 | Suspension, head gimbal assembly, and disk device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510118930 CN1956061A (en) | 2005-10-27 | 2005-10-27 | Bracket, magnetic head flexible piece containing the bracket and magnetic disk drive unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1956061A true CN1956061A (en) | 2007-05-02 |
Family
ID=38063342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510118930 Pending CN1956061A (en) | 2005-10-27 | 2005-10-27 | Bracket, magnetic head flexible piece containing the bracket and magnetic disk drive unit |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2007122861A (en) |
| CN (1) | CN1956061A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374371A (en) * | 2014-08-18 | 2016-03-02 | 日东电工株式会社 | Suspension flexure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0668629A (en) * | 1992-08-17 | 1994-03-11 | Nec Corp | Magnetic head supporting mechanism and magnetic head assembly using the same and magnetic disk device |
| JPH1139817A (en) * | 1997-07-18 | 1999-02-12 | Toshiba Corp | Head support device and recording/reproducing apparatus using the same |
| JP2002133803A (en) * | 2000-10-31 | 2002-05-10 | Tdk Corp | Very small positioning actuator for head element, head gimbal assembly equipped with the actuator, disk device equipped with the head gimbal assembly, actuator manufacturing method, and head gimbal assembly manufacturing method |
| JP2004086984A (en) * | 2002-08-26 | 2004-03-18 | Toshiba Corp | Head assembly, disk device, and method for manufacturing head assembly |
| JP4053457B2 (en) * | 2003-04-23 | 2008-02-27 | ヒタチグローバルストレージテクノロジーズネザーランドビーブイ | Suspension assembly and rotating disk storage device |
-
2005
- 2005-10-27 CN CN 200510118930 patent/CN1956061A/en active Pending
-
2006
- 2006-10-26 JP JP2006291033A patent/JP2007122861A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374371A (en) * | 2014-08-18 | 2016-03-02 | 日东电工株式会社 | Suspension flexure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007122861A (en) | 2007-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101042876B (en) | Cantalever component containing reinforcingplate, magnetic head folding tabs assembly and disk driving unit | |
| US8130469B2 (en) | Suspension, head gimbal assembly and/or disk drive unit including outrigger with spring beams, and/or manufacturing method thereof | |
| US7312956B2 (en) | Micro-actuator, head gimbal assembly, and disk drive unit with the same | |
| US7298593B2 (en) | Micro-actuator including a leading beam pivot part, head gimbal assembly and disk drive unit with the same | |
| US7719798B2 (en) | Rotational micro-actuator integrated with suspension of head gimbal assembly, and disk drive unit with the same | |
| CN1797550A (en) | Micro-driver, vibration damper, magnetic head folding sheet combination and disk drive unit thereof | |
| US20060098347A1 (en) | Micro-actuator, head gimbal assembly and disk drive unit with the same | |
| US7538984B2 (en) | Rotational PZT micro-actuator with a rotatable plate | |
| US7417831B2 (en) | Micro-actuator and head gimbal assembly for a disk drive device | |
| US20070223146A1 (en) | Rotational PZT micro-actuator, head gimbal assembly, and disk drive unit with same | |
| CN1828726A (en) | Rotatable piezoelectric micro-actuator and magnetic head folding sheet combination and disk drive unit thereof | |
| CN1828727A (en) | Micro-driver and magnetic head tabs combination and disk drive unit thereof | |
| US7433159B2 (en) | Micro-actuator unit, head gimbal assembly, and disk drive unit with vibration canceller | |
| US20220122633A1 (en) | Gimbal Strut Configuration For High Yaw Suspension Design | |
| US12020732B2 (en) | Gimbal design with increased dimple contact force | |
| WO2001073765A1 (en) | Dynamically symmetric actuator | |
| CN1956061A (en) | Bracket, magnetic head flexible piece containing the bracket and magnetic disk drive unit | |
| CN1905012A (en) | Magnetic head flap combination with microdriver and magnetic disk driver thereof | |
| CN101038750A (en) | Micro-driver having U-shaped frame and metal support frame and its manufacturing method | |
| CN1755799A (en) | Micro-driver, magnetic head folding sheet combination with micro-driver and magnetic disk driver | |
| CN101051511A (en) | Micro ectuator, micro ectuator suspension arm part and magnetic head folding sheet combination | |
| CN101079305A (en) | Magnetic head folding sheet combination with micro-actuator and its production method and magnetic disc driving unit | |
| CN100592390C (en) | Magnetic-head folded-piece combination and magnetic disc driving unit containing same | |
| US7535681B2 (en) | Micro-actuator including side arms having back-turned extensions, head gimbal assembly and disk drive unit with the same | |
| CN1299259C (en) | Design of magnetic head arm assembling for high-capacity hard disc driver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070502 |