CN1917044A - Combination of flexible electric cable frame, and combination of flexible cable cantalever in use for disk drive - Google Patents
Combination of flexible electric cable frame, and combination of flexible cable cantalever in use for disk drive Download PDFInfo
- Publication number
- CN1917044A CN1917044A CN 200510091256 CN200510091256A CN1917044A CN 1917044 A CN1917044 A CN 1917044A CN 200510091256 CN200510091256 CN 200510091256 CN 200510091256 A CN200510091256 A CN 200510091256A CN 1917044 A CN1917044 A CN 1917044A
- Authority
- CN
- China
- Prior art keywords
- magnetic head
- flexible cable
- cantilever
- connecting terminal
- framework
- 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.)
- Granted
Links
Images
Landscapes
- Supporting Of Heads In Record-Carrier Devices (AREA)
- Moving Of Heads (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
Abstract
A frame assembly of flexible cable on magnetic head folding plate consists of frame of microactuator and flexible cable set on frame of microactuator. It is featured as forming flexible cable by the first set of connection contacts at one end of said cable and the second set of connection contacts at another end of said cable as well as wires being integrated on said cable and being used to connect two sets of connection contacts with each other.
Description
Technical field
The present invention relates to a kind of information-recording disk driving arrangement, relate to a kind of microdrive and cantilever that is used for the magnetic head fold piece combination of disk drive system specifically, and be used to reduce the microdrive and the cantilever of conductor vibration.
Background technology
A kind of common information storing device is a disk drive system, and it uses magnetic media to store data and the portable 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 disc drive unit with higher storage capacity always, such as increasing the density of magnetic 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 magnetic 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 that improves read/write head position control accuracy on compact disc that disc drive manufacturers is often used also is microdrive for adopting second driver.This microdrive cooperates common positional precision and the access speed that realizes the control read/write head with a master driver.The disc drive unit that comprises microdrive is called as Dual-drive system.
Once developed many Dual-drive systems that are used to improve access speed and read/write head bearing accuracy on the magnetic track of compact disk in the past.This Dual-drive system generally includes a keynote coil motor driver and a secondary microdrive, such as piezo-electric micro driver (be the piezoelectric element microdrive, be designated hereinafter simply as piezo-electric micro driver).This voice coil motor driver is controlled by a 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 magnetic track suitable on the memory disc on this actuating arm.Piezo-electric micro driver and voice coil motor driver are used common raising access speed and realize the fine setting of read/write head position on magnetic track.Voice coil motor driver is to the position coarse adjustment of read/write head, and the piezo-electric micro driver 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.
A kind of known being used to realizes the microdrive of read/write head fine position is included piezo-electric micro driver.This piezo-electric micro driver has relevant electrical driver, and this electrical drive unit can cause the piezo-electric micro driver on the microdrive optionally to shrink or expand.Piezo-electric micro driver has suitable structure, makes the contraction of piezo-electric micro driver or the motion that expansion causes microdrive, and then causes the motion of read/write head.With respect to the disc drive unit that only uses voice coil motor driver, the motion of this read/write head can realize the faster more accurate adjustment in read/write head position.These exemplary piezo-electric micro drivers are exposed in many patents, the Jap.P. JP 2002-133803 that is called " microdrive and magnetic head fold piece combination " such as name, and name is called the Jap.P. JP 2002-074871 of " have the magnetic head fold piece combination of the driver of realizing fine position, comprise the disc drive unit of this magnetic head fold piece combination and the manufacture method of this magnetic head fold piece combination ".
Figure 1 shows that a traditional disk drive system.One disk 101 is installed on the rotation motor 102 and by its rotation.Carry magnetic head fold piece combination 100 on the one voice coil motor arm 104, this magnetic head fold piece combination 100 comprises the microdrive 105 that contains magnetic head 103, on this magnetic head 103 read/write head is installed.The motion of one voice coil motor control voice coil motor arm 104, and then control head 103 moving between the lip-deep magnetic track of disk 101 finally realize read/write head data write on disk 101.When running status, form aerodynamic force between the disk 101 of the magnetic head 103 that comprises read/write head and rotation and contact, and produce a lift.This lift is balance mutually with the elastic force opposite sign but equal magnitude that is applied by the cantilever of magnetic head fold piece combination 100, and then causes in the process of motor arm 104 rotations, and the surface of the disk 101 of rotation forms and also keeps a predetermined flying height.
Figure 2 shows that the magnetic head fold piece combination 100 of the disc drive unit that contains dual drive among Fig. 1.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 on the contrary, but influences the performance that read/write head is is accurately read and write data on the disk.For this reason, increase above-mentioned piezo-electric micro driver 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 piezo-electric micro driver is adjusted the displacement of magnetic head 103 with littler amplitude, so as the compensation voice coil motor and (or) foozle of magnetic head cantilever combination.This piezo-electric micro driver makes that using littler track pitch becomes possibility, and the track density (TPI, the magnetic track quantity that per inch is contained) of disc drive unit can be improved 50%, can reduce the seek time and the setting time of magnetic head simultaneously.Therefore, the piezo-electric micro driver microdrive can increase substantially the memory capacity of memory disc.
As shown in Figure 2, this magnetic head fold piece combination 100 comprises that one has the cantilever 106 of flexible element 108.This flexible element 108 has cantilever tongue piece 110 and is used to carry piezo-electric micro driver 105 and magnetic head 103.Outwards outstanding two leads 112,114 that are provided with in cantilever tongue piece 110 both sides of this flexible element 108.One end of each lead is connected on the portable plate 116, and the other end is connected on the many leads 118, these many leads 118 and connecting terminal 120 interconnection.
With reference to figure 3, traditional piezo-electric micro driver 105 comprises metal framework 130, and this metal framework 130 comprises top board 132, base plate 134 and the two side arms 136,138 that top board 132, base plate 134 are coupled together.Be separately installed with piezoelectric unit 140,142 on the two side arms 136,138.Magnetic head 103 is installed on the top board 132.
With reference to figure 4, this piezo-electric micro driver 105 is by the base plate 134 of its metal framework 130 and be installed on the cantilever tongue piece 110.This base plate 134 can be fixed on the cantilever tongue piece 110 by the mode of epoxide-resin glue or laser bonding.Three are electrically connected and receive 150 (gold goal connects or solder ball connects) is fixed on piezo-electric micro driver 105 on the cantilever lead 118 of piezoelectric unit 140,142 both sides.In addition, a plurality of be electrically connected to receive such as four be electrically connected and receive (gold goal connects or solder ball connects) magnetic head 103 is connected on the cantilever lead 118 so that electrically connect read-write cell on the magnetic head 103.When applying voltage by 118 pairs of piezoelectric units of cantilever lead 140,142, piezoelectric unit 140,142 shrinks or expansion causes its side arm 136,138 lateral thrusts.This bending causes metal framework 130 to produce detrusion, promptly the shape of this metal framework 130 becomes parallelogram by rectangle, thereby cause the motion of top board 132, cause being installed in magnetic head 103 on the top board 132 then, make the position that accurately to adjust read/write head along the disk orbital motion.By the way, can realize head position control and read/write head fine position.
Figure 5 shows that voltage is applied to the process of piezoelectric unit these piezo-electric micro driver 105 starts in 140,142 o'clock.Such as, when on the piezoelectric unit 140 that sinusoidal voltage is applied to the piezo-electric micro driver with positive polarity in first semiperiod, this piezoelectric unit 140 will shrink and cause side arm 136 to produce wavy distortion.Because magnetic head 103 is installed on the top board 132, this distortion will impel magnetic head to be moved to the left.Similar ground, when on the piezoelectric unit 142 that sinusoidal voltage is applied to the piezo-electric micro driver with positive polarity in second cycle, this piezoelectric unit 142 will shrink and cause the wavy distortion of side arm 138 generations.This distortion will impel magnetic head to move right.Above-mentioned motion depends on the polar orientation of piezo-electric micro driver piezoelectric unit and the situation that voltage applies, but its principle of work is very simple.
Be used for many leads 118 are electrically connected with portable plate 116 with reference to 6, two outwards outstanding leads 112,114 of figure, this portable plate 116 electrically connects with magnetic head 103.Because the lead resistance that the rigidity of lead causes reaches to keeping the performance of microdrive when moving, lead 112,114 bendings are arranged on the both sides of cantilever tongue piece 110 for minimizing.In the magnetic head tracking and reset operation of disc drive unit, this microdrive produces motion, and this layout permission lead 112,114 in this process vibrates and moves.The vibration of above-mentioned lead or the mobile magnetic head that will cause break away from track.For having higher rotation speed and dispose the disc drive unit of a plurality of disks, bandy lead 112,114 also will cause the windage yaw problem that forms because of impact of air currents lead or cantilever.Position error signal (PES) that above-mentioned two name a person for a particular job causes magnetic head and not reproducible deflection (NRRO) performance reduce.This will limit the performance and the capacity of disc drive unit.
Such as, Figure 6 shows that the situation when lead 112,114 moves when microdrive 105 is excited.As shown in the figure, when applying voltage on microdrive 105, the motion of side arm 136,138 causes lead 112 to the swing of the back side of cantilever 106,114 end face swings to magnetic head of lead.Above-mentioned swing will produce cantilever resonance, and this is to cause magnetic head to depart from one of reason of track.
Figure 7 shows that the magnetic head that produces owing to guidewire movement in the conventional art departs from the situation of track when microdrive is excited.As above discuss describedly, comprise outwards outstanding lead 112,114 in the traditional design.Because the magnetic head that guidewire movement produces departs from the displacement of track according to frequency measurement.As shown in the drawing, comprise three peak values 160 (such as 4Khz, 6.3Khz, 8.5Khz value corresponding) in this displacement trend.
Figure 8 shows that the measurement data of not reproducible deflection (NRRO) performance of magnetic head in the conventional art.As shown in the figure, the magnetic head when some peak values 170 are represented different frequencies departs from the situation of track, and it has represented the head skew amount that is significantly produced by guidewire movement.
Therefore be necessary to provide a kind of improved system in fact, so that overcome above-mentioned shortcoming.
Summary of the invention
One aspect of the present invention relates to a kind of microdrive and cantilever that reduces the conductor vibration structure that have.
The present invention relates to a kind of cantilever that has the microdrive of flexible cable frame combination and have the combination of flexible cable cantilever on the other hand.
The present invention relates to a kind of flexible cable frame combination that is used for magnetic head fold piece combination on the other hand.This flexible cable frame combination comprises the microdrive framework and is installed in flexible cable on the microdrive framework.This flexible cable comprises first group of connecting terminal being positioned at the one end, be positioned at second group of connecting terminal of its other end and be integrated on the described flexible cable, be used to connect the lead (trace) of above-mentioned two groups of connecting terminals.
The present invention relates to a kind of magnetic head fold piece combination that comprises the flexible cable frame combination on the other hand, and it comprises the flexible cable frame combination that contains the microdrive framework and be installed in the framework flexible cable on this microdrive framework; Magnetic head; And the cantilever of above-mentioned flexible cable frame combination of support and magnetic head.This cantilever comprises a flexible cable cantilever combination that contains the cantilever flexible element and be installed on the flexible cable on this flexible element.
Another aspect of the invention relates to a kind of disk drive.Described disk drive comprises magnetic head fold piece combination; Described magnetic head fold piece combination comprises flexible cable frame combination, magnetic head and supports the cantilever of described flexible cable frame combination and magnetic head.Described disk drive also comprises the actuating arm that connects with described magnetic head fold piece combination; Disk; And the Spindle Motor of rotatable this disk.Wherein said flexible cable frame combination comprises the microdrive framework and is installed on flexible cable on this microdrive framework.Wherein this flexible cable comprises first group of connecting terminal being positioned at the one end, is positioned at second group of connecting terminal of its other end and is integrated on the described flexible cable, is used to connect the lead (trace) of above-mentioned two groups of connecting terminals.
One magnetic head fold piece combination, this magnetic head fold piece combination comprise the microdrive framework, are installed in the flexible cable on the microdrive framework, magnetic head and carry the cantilever of above-mentioned flexible cable frame combination and magnetic head.This disc drive unit also comprises actuating arm, disk that is connected with magnetic head fold piece combination and the rotation motor that drives this disk.This flexible cable frame combination comprises the microdrive framework and is installed in flexible cable on the microdrive framework.This flexible cable comprises first group of connecting terminal being positioned at flexible cable one end, be positioned at second group of connecting terminal of the flexible cable other end and be integrated on the flexible cable first group of connecting terminal and second group of lead that connecting terminal couples together.
Another aspect of the invention relates to a kind of manufacture method of magnetic head fold piece combination.Described method comprises provides the microdrive framework; The framework flexible cable is installed on described microdrive framework, and wherein this framework flexible cable comprises first and second group connecting terminal and with above-mentioned two groups of integral wires that connecting terminal couples together; Piezoelectric element is installed on the described microdrive framework; This microdrive framework is installed on the cantilever; Cantilever lead on described piezoelectric element and the cantilever is electrically connected; Magnetic head is installed on the described microdrive framework; Cantilever lead on described magnetic head and the cantilever is electrically connected; Carry out visual examination; Test magnetic head and piezoelectric property; And clean.
By following detailed description, and in conjunction with the accompanying drawings, it is very obvious that others of the present invention, feature and advantage will become, and these accompanying drawings belong to the part of summary of the invention and are used to set forth inventive principle.
Description of drawings
Fig. 1 is the stereographic map of traditional magnetic disk driver element.
Fig. 2 is the stereographic map of traditional magnetic head fold piece combination.
Fig. 3 is the magnetic head of magnetic head fold piece combination shown in Figure 2 and the stereographic map of piezo-electric micro driver.
Fig. 4 is the partial perspective view of magnetic head fold piece combination shown in Figure 2.
Fig. 5 is the magnetic head and the vertical view of piezo-electric micro driver when user mode of magnetic head fold piece combination shown in Figure 2.
Fig. 6 is the partial perspective view of magnetic head fold piece combination user mode shown in Figure 2.
Fig. 7 has showed that the situation of derailing displacement (off trackdisplacement) takes place owing to lead (trace) moves magnetic head in the conventional art.
Fig. 8 has showed not reproducible deflection (NRRO) performance of magnetic head in the prior art.
Fig. 9 is the stereographic map of the magnetic head fold piece combination that comprises piezo-electric micro driver described in the one embodiment of the invention.
Figure 10 is the partial perspective view of magnetic head fold piece combination shown in Figure 9.
Figure 11 is the exploded view of magnetic head fold piece combination shown in Figure 10.
Figure 12 is the side view of magnetic head fold piece combination shown in Figure 10.
Figure 13 is the stereographic map of piezo-electric micro driver shown in Figure 9, that isolate from magnetic head and cantilever.
Figure 14 is the exploded view of piezo-electric micro driver shown in Figure 13.
Figure 15 has showed the derailing displacement situation that the magnetic head of magnetic head fold piece combination shown in Figure 9 causes owing to guidewire movement.
Figure 16 has showed the not reproducible deflection of the magnetic head of magnetic head fold piece combination shown in Figure 9 (NRRO) performance.
The manufacturing flow chart of Figure 17 for describing in the one embodiment of the invention.
Figure 18 is the exploded view of the magnetic head fold piece combination that contains piezo-electric micro driver and cantilever described in an alternative embodiment of the invention.
Figure 19 is the stereographic map after magnetic head fold piece combination shown in Figure 180 is assembled.
Figure 20 is the partial perspective view of magnetic head fold piece combination shown in Figure 180.
The manufacturing flow chart of Figure 21 for describing in the another embodiment of the present invention.
Figure 22 is the exploded view of the magnetic head fold piece combination described in the another embodiment of the present invention.
Figure 23 is the stereographic map of the magnetic head fold piece combination that contains piezo-electric micro driver described among another embodiment of the present invention.
Figure 24 is the stereographic map of the magnetic head fold piece combination that contains piezo-electric micro driver described among another embodiment 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.Reduce the conductor vibration in the magnetic head fold piece combination when as mentioned above, the present invention is intended to utilize microdrive accurately to drive magnetic head.One aspect of the present invention provides a kind of microdrive with flexible cable frame combination, so that reduce the conductor vibration in the magnetic head fold piece combination.The present invention is to provide a kind of cantilever with flexible cable cantilever combination (flex cable suspension assembly) on the other hand, so that reduce the conductor vibration in the magnetic head fold piece combination.By reducing the conductor vibration in the magnetic head fold piece combination, make the performance of disk drive be improved.
Describe now and be used for the microdrive of magnetic head fold piece combination and several embodiment of cantilever.It should be noted that this microdrive and cantilever have microdrive and cantilever reducing the disk drive that is fit to of conductor vibration applicable to any, and the ad hoc structure of the magnetic head fold piece combination that is not limited to show in the accompanying drawing.Be that the present invention is applicable to any suitable device that contains microdrive and cantilever in any field.
Fig. 9 to Figure 12 for the magnetic head fold piece combination that contains piezo-electric micro driver 212 210 described in the one embodiment of the invention (head gimbal assembly, HGA).This magnetic head fold piece combination 210 comprises piezo-electric micro driver 212, magnetic head 214 and is used to carry or hang the cantilever 216 of described piezo-electric micro driver 212 and magnetic head 214.
As mentioned above, described cantilever 216 comprises substrate 218, load beam 220, articulated part 222, flexible element 224 and is positioned at inside and outside cantilever lead 226,227 (suspension trace) on this flexible element 224.This substrate 218 comprises and is used for cantilever 16 is connected to mounting hole 228 on the actuating arm of voice coil motor (VCM) of disk drive.The shape of this substrate 218 changes with the structure or the pattern of disk drive.And, this substrate 218 by relatively hard or rigidity preferably material form such as metal so that stably cantilever 216 is supported on the actuating arm of voice coil motor.
This articulated part 222 is by being assembled to such as welding manner on substrate 218 and the load beam 220.As shown in the figure, this articulated part 222 comprise one with substrate 218 on the hole 230 that aligns of mounting hole 228.In addition, this articulated part 222 also comprises the maintenance bar 232 that is used to support load beam 220.
This load beam 220 is by on the maintenance bar 232 that is installed in articulated part 222 such as welding manner.Form the small embossment 234 (with reference to Figure 12) that cooperates with flexible element 224 on this load beam 220.The effect of this load beam 220 is similar to spring or bump leveller, with the vibration of 214 pairs of cantilevers 216 of buffering magnetic head.Selectively have one on this load beam 220 and promote sheet 236, when disk stopped the rotation, this lifting sheet 236 was mentioned magnetic head fold piece combination 210 from disk.
This flexible element 224 is by being installed on articulated part 222 and the load beam 220 such as laminating (lamination) or welding manner.This flexible element 224 is provided with cantilever tongue piece 238, is used for piezo-electric micro driver 212 is connected to cantilever 216 (with reference to Figure 11).This cantilever tongue piece 238 matches with small embossment 234 on the load beam 220.Simultaneously, the cantilever lead of being located on this flexible element 224 226,227 is electrically connected some connecting terminals 240 (being connected with external control system) and magnetic head 214 and the piezoelectric element 242 that is positioned on the piezo-electric micro driver 212.Described cantilever lead 226,227 can be flexible print circuit (FPC) and can comprise the line of any suitable quantity.
Shown in Figure 10,11, connecting terminal 244 is directly connected on the interior cantilever lead 226, so that cantilever lead 226 is electrically connected on the connecting terminal 246 of flexible cable frame combination of piezo-electric micro driver in will being somebody's turn to do, described connecting terminal 246 electrically connects with magnetic head 214.Simultaneously, connecting terminal 248 is directly connected on the outer cantilever lead 227, so that the connecting terminal 250 that will be somebody's turn to do on outer cantilever lead 227 and the piezoelectric element 242 electrically connects.
In described disk drive, be provided with voice coil motor, so that drive actuating arm controlledly, and then controlled drive magnetic head fold piece combination 210, and make magnetic head fold piece combination 210 magnetic head 214 and read/write head thereof are positioned the customizing messages track on the disk of disk drive.Described microdrive 212 is used to disk drive to realize fast and accurate position control that the magnetic head that reduces simultaneously in the course of work is sought rail and positioning time.Therefore, in the time of in magnetic head fold piece combination 210 is packed disk drive into, just form Dual-drive system, wherein this voice coil motor driver realizes the big position adjustment of read/write head, and the fine setting that piezo-electric micro driver 212 is realized read/write head position.
Figure 11, Figure 13 and Figure 14 have showed the piezo-electric micro driver 212 of isolating with magnetic head 214 and cantilever 216.As shown in the figure, this piezo-electric micro driver 212 comprises flexible cable frame combination 255 (flex cable frameassembly) and is installed in piezoelectric element 242 on the flexible cable frame combination 255.Described flexible cable frame combination 255 comprises microdrive framework 252 and framework flexible cable 257.
This microdrive framework 252 comprises top back up pad 254, end back up pad 256, connects top back up pad 254 with the side arm 258 of end back up pad 256 and from top back up pad 254 extended connecting terminal back up pads 260.This microdrive framework 252 can be by any suitable material, and for example metal forms by any suitable technology.
Described piezoelectric element 242 is contained on each side arm 258 on the microdrive framework 252 by for example epoxy glue, cementing agent or anisotropic conductive film (ACF), so that form piezo-electric micro driver 212.Each piezoelectric element 242 is the plate body shape, and it is by by piezoelectric, and the overlapping film that constitutes as PZT forms, and (nickel-Yin), Pt (platinum) or gold are as electrode with Ni-Ag.In another embodiment, described piezoelectric element 242 is the single or multiple lift ceraminator.Yet described one or more piezoelectric elements 242 can be installed on the side arm 258 in any suitable manner.
This framework flexible cable 257 comprises insulation course 261, and this insulation course 261 comprises top 263, bottom 265 and connects the pars intermedia 267 of top 263 and bottom 265.As shown in the figure, this pars intermedia 267 comprises aduncate relatively edge, thereby forms weakness (weak point) between top 263 and bottom 265.On this top 263, form plural number, such as four, magnetic head connecting terminal 264; On this bottom 265, form plural number, such as four, cantilever connecting terminal 246.Magnetic head connecting terminal 264 electrically connects mutually by the lead 266 on the insulation course 261 with cantilever connecting terminal 246.
Be installed to by top 263 on the top back up pad 254 of microdrive framework 252 insulation course 261, and the bottom 265 of insulation course 261 is installed on the end back up pad 256 of microdrive framework 252, and this framework flexible cable 257 is installed on the microdrive framework 252.This insulation course 261 can be fixed on the microdrive framework 252 by for example epoxy glue, cementing agent or anisotropic conductive film (ACF) etc.
As shown in figure 10, the end back up pad 256 of this microdrive framework 252 is fixed to described piezo-electric micro driver 212 on the cantilever 216.Specifically, this end back up pad 256 is contained on the cantilever tongue piece 238 of flexible element 224 by for example mode parts such as epoxy glue, resin or laser bonding.The cantilever connecting terminal 246 of this framework flexible cable 257 is by being electrically connected 262, for example corresponding connecting terminal 244 electric connections on line connected mode and the cantilever 216.Make end back up pad 256 be connected on the cantilever 216 like this, and make framework flexible cable 257 and interior cantilever lead 226 electrically connect.Simultaneously, between piezo-electric micro driver 212 and cantilever tongue piece 238, form a parallel clearance 280, make that this piezo-electric micro driver 212 in use can free movement, as shown in figure 12.
The top back up pad 254 of this microdrive framework 252 and the top 263 of framework flexible cable 257 have the structure that described piezo-electric micro driver 212 can be connected on the magnetic head 214.Specifically, an end of this magnetic head 214 is provided with plural connecting terminal 268 corresponding to the magnetic head connecting terminal 264 on the framework flexible cable 257, such as four connecting terminals.Corresponding connecting terminal 268 270 (GBB or the SBB) electric connections (with reference to Figure 10 and 12) of receiving by for example being electrically connected on the magnetic head 214 that described top back up pad 254 and top 263 supported on it, the magnetic head connecting terminal 264 on the described framework flexible cable 257 and magnetic head 214.Thereby piezo-electric micro driver 212 is connected on the magnetic head 214, and forms a magnetic head and piezo-electric micro driver combination 274, the interior cantilever lead 226 with magnetic head 214 and read/write element and cantilever 216 electrically connects simultaneously.
In the above-described embodiments, this lead 266 is provided with four leads between four magnetic head connecting terminals 264 and four cantilever connecting terminals 246.Yet the lead of any suitable quantity and contact can be used.
During use,, make piezoelectric element 242 be excited and cause that it optionally shrinks or expands by for example on described piezoelectric element 242, applying the mode of voltage.Described piezo-electric micro driver 212 is so constructed, thereby make the contraction of described piezoelectric element 242 or the motion that expansion causes side arm 258, the motion of this side arm 258 causes the motion of top back up pad 254 again, and the magnetic head 214 that causes at last being connected on the piezo-electric micro driver 212 produces motion.
Because lead 266 is integrated in framework flexible cable 257, and connecting terminal back up pad 260 is integrated in microdrive framework 252, so when piezo-electric micro driver 212 was worked, said elements can not produce additional vibratory.By reducing the conductor vibration in the magnetic head fold piece combination, can make the performance of disk drive be improved.And, because said elements is not easy distortion in the manufacture process of cantilever, magnetic head fold piece combination and disk drive, be improved so have the yields of the piezo-electric micro driver 212 of integral wire 266 and connecting terminal back up pad 260.In addition, microdrive framework 252 and framework flexible cable 257 have simple relatively structure and manufacturing process, can make product design and manufacturing cost reduce.
Figure 15 has showed the derailing displacement situation that magnetic head causes owing to guidewire movement after piezo-electric micro driver 212 work.Compare with the test result of conventional art shown in Figure 7, three peak values 284 shown in Figure 15 are with respect to peak value shown in Figure 7 160 make moderate progress (such as in 4Khz, 6.3kHz and 8.5Khz).
Figure 16 shows that the test data of not reproducible deflection (NRRO) performance of the magnetic head that is used for piezo-electric micro driver 212.The test result of the conventional art of representing with Fig. 8 is compared, and peak value 286 shown in Figure 16 peak value 170 shown in Figure 8 relatively makes moderate progress.
Figure 17 shows that the manufacturing of the magnetic head fold piece combination of describing in one embodiment of the present of invention and the key step of assemble flow.This flow process begin the back (step 1) among Figure 17, described flexible cable are installed in (step 2 among Figure 17) on the microdrive framework, described flexible cable and microdrive framework can for Fig. 9 to structure shown in Figure 14.Then, described piezoelectric element is installed in that (step 3) among Figure 17 is to form piezo-electric micro driver on the side arm of described microdrive framework.Then, the microdrive framework of piezo-electric micro driver is by (the step 4) among Figure 17 on the cantilever tongue piece that is installed in cantilever such as the mode of welding.After above-mentioned installation finishes, with the cantilever lead electric connection (step 5) among Figure 17 of piezoelectric element and cantilever.Next, magnetic head is installed on the described piezo-electric micro driver (step 6) among Figure 17, and the cantilever lead on this magnetic head and the cantilever electrically connected the (step 7) among Figure 17.Then, this magnetic head fold piece combination is carried out the visual examination (step 8) among Figure 17, and magnetic head and piezoelectric property tested the (step 9) among Figure 17.In the end in step, this magnetic head fold piece combination is cleaned the (step 10) among Figure 17.
Figure 18 to Figure 20 has showed the magnetic head fold piece combination of describing in the another embodiment of the present invention 310 that contains piezo-electric micro driver 312 and cantilever 316.In this embodiment, this piezo-electric micro driver 312 comprises flexible cable frame combination 355, and wherein this flexible cable 357 comprises the convenient extension 394 that is connected with cantilever 316, such as the long-tail guide plate.This cantilever 316 also comprises the flexible cable cantilever combination 300 that is installed on the flexible element 324.
As shown in figure 18, this cantilever 316 comprises substrate 318, is installed in articulated part 322 on the substrate 318, is installed in the load beam 320 on the maintenance bar of articulated part 322 and is installed on flexible element 324 on load beam 320 and the articulated part 322.Flexible element 324 is provided with the cantilever tongue piece 338 (similar with Figure 12) that matches with small embossment on the load beam 320.Can be connected to each other by mode between described substrate 318, articulated part 322, load beam 320 and the flexible element 324 such as welding.
Described flexible cable cantilever combination 300 comprises the cantilever flexible cable 302 with insulation course 304.Inside and outside cantilever lead 326,327 for example is integrated on this insulation course 304 by the mode (laminated) that laminates.An end of cantilever lead 326 electrically connects with some connecting terminals 340 (it links to each other with external control system) in described, and the other end electrically connects with connecting terminal 344 (it links to each other with magnetic head 314).Simultaneously, an end of described outer cantilever lead 327 electrically connects with described connecting terminal 340 (it links to each other with external control system), and the other end then electrically connects with connecting terminal 348 (it links to each other with piezo-electric micro driver 342).
Described flexible cable frame combination 355 comprises microdrive framework 352 and framework flexible cable 357.This microdrive framework 352 is similar with microdrive framework 252, also comprises top back up pad 354, end back up pad 356, side arm 358 and connecting terminal back up pad 360.A piezoelectric element 342 is installed on each side arm 358.
Described framework flexible cable 357 comprises the insulation course 361 with top 363 and bottom 365.Lead 366 is integrated in this insulation course 361, and has extension 394, such as the long-tail guide plate.Magnetic head connecting terminal 364, for example four magnetic head connecting terminals are formed on this top 363; Cantilever connecting terminal 346, for example four cantilever connecting terminals are formed on this extension 394.In one embodiment, described cantilever connecting terminal 346 is two-sided exposed copper tip.Described magnetic head connecting terminal 364 electrically connects by the lead on the insulation course 361 366 with cantilever connecting terminal 346.
Be installed to by top 363 on the top back up pad 354 of microdrive framework 352 insulation course 361, and the bottom 365 of insulation course 361 is installed on the end back up pad 356 of microdrive framework 352, thereby this framework flexible cable 357 is installed on the microdrive framework 352.This insulation course 361 can be installed on the described microdrive framework 352 by for example epoxy glue, cementing agent or anisotropic conductive film.
To shown in Figure 20, this cantilever flexible cable 302 is installed on the flexible element 324 on the cantilever 316 by for example epoxide-resin glue or cementing agent as Figure 19.As shown in figure 18, this cantilever flexible cable 302 comprises the tongue piece portion 306 by cantilever tongue piece 338 supports of flexible element 324.
The end back up pad 356 of described microdrive framework 352 is installed on the cantilever tongue piece 338 of flexible element 324 and on the tongue piece portion 306 of cantilever flexible cable 302 by for example epoxide-resin glue or cementing agent.Corresponding connecting terminal 344 is by connecting such as ultrasound wave or the anisotropic conductive film connected mode realizes electrically connecting on the cantilever connecting terminal 346 of flexible cable 357 and the cantilever flexible cable 302.Thereby end back up pad 356 is connected on the cantilever 316, and flexible cable 357 and interior cantilever lead 326 are electrically connected.
The top back up pad 354 of described microdrive framework 352 and the top 363 of flexible cable 357 are connected to piezo-electric micro driver 312 on the magnetic head 314 jointly.Particularly will, top back up pad 354 and the top 363 together support magnetic head 314 on it, and corresponding connecting terminal 368 370 (GBB or the SBB) that receive by for example being electrically connected electrically connect (with reference to Figure 20) on the magnetic head connecting terminal 364 on the framework flexible cable 357 and the magnetic head 314.Thereby piezo-electric micro driver 312 is connected on the magnetic head 314, and forms a magnetic head and piezo-electric micro driver combination 374, and the interior cantilever lead 326 of magnetic head 314 and read/write head and cantilever 316 electrically connects.
Because described lead 366 is integrated on the framework flexible cable 357, cantilever lead 326 and 327 is integrated in the cantilever flexible cable 302, connecting terminal back up pad 360 is integrated in microdrive framework 352, so when piezo-electric micro driver 312 work, these elements can not produce unnecessary vibration.By reducing the conductor vibration in the magnetic head fold piece combination, make the performance of disk drive be improved.In addition, because above-mentioned integrated parts are not easy distortion in the manufacture process of cantilever, magnetic head fold piece combination and disk drive, so can improve the product yield.In addition, described microdrive framework 352, cantilever 316, framework flexible cable 357 and cantilever flexible cable 302 have simple relatively structure and manufacturing process, make product design and manufacturing cost reduce.
Shown in Figure 21ly be the manufacturing of the magnetic head fold piece combination described in an alternative embodiment of the invention and the key step of assemble flow.This flow process begin the back (step 1) among Figure 21 is installed in (step 2 among Figure 21) on the microdrive framework with the framework flexible cable, described framework flexible cable and microdrive framework can for Figure 18 to structure shown in Figure 20.Then, piezoelectric element is installed in (step 3) among Figure 21 is to form piezo-electric micro driver on the side arm of microdrive framework.Then, the cantilever flexible cable is installed in the flexible element (step 4) among Figure 21 of cantilever.Described cantilever flexible cable and cantilever can for Figure 18 to structure shown in Figure 20.Then, the microdrive framework with piezo-electric micro driver is installed in the (step 5) among Figure 21 on the cantilever by the mode such as welding.After above-mentioned installation finishes, again the cantilever lead on piezo-electric micro driver and the cantilever is electrically connected the (step 6) among Figure 21.Next, magnetic head is installed on the piezo-electric micro driver (step 7) among Figure 21, and the cantilever lead on this magnetic head and the cantilever electrically connected the (step 8) among Figure 21.Then, this magnetic head fold piece combination is carried out the visual examination (step 9) among Figure 21, and magnetic head and piezoelectric property tested the (step 10) among Figure 21.In the end in step, this magnetic head fold piece combination is cleaned the (step 11) among Figure 21.
The magnetic head fold piece combination 410 of Figure 22 for describing among another embodiment of the present invention.In this embodiment, described cantilever flexible cable 402 combines with the flexible element 424 of cantilever 416.All the other structures of this magnetic head fold piece combination 410 are similar substantially to the combination 310 of said head tabs, and represent with similar label.
The magnetic head fold piece combination 510 of Figure 23 for describing among another embodiment of the present invention.In this embodiment, described piezo-electric micro driver 512 comprises a framework flexible cable 557 that is positioned at microdrive framework 552 dorsal parts.As shown in the figure, described connecting terminal back up pad 560 is provided with an opening or window 590, is connected with magnetic head 214 so that magnetic head connecting terminal 564 comes out.In this embodiment, described magnetic head connecting terminal 564 is fly line contact (fly lead pads).Equally, anisotropic conductive film 592 or other suitable material also can be used for cantilever connecting terminal 546 machinery and are electrically connected on the connecting terminal 244 on the cantilever 216.All the other structures of this magnetic head fold piece combination 510 are similar substantially to the combination 210 of said head tabs, and represent with similar label.
The magnetic head fold piece combination 610 of Figure 24 for describing among another embodiment of the present invention.In this embodiment, described piezo-electric micro driver 612 comprises framework flexible cable 657.This framework flexible cable 657 has extension 694, such as the long-tail guide plate, is connected with cantilever 616 with convenient.And this framework flexible cable 657 is positioned at the dorsal part of microdrive framework 652.As shown in the figure, have an opening or window 690 on the described connecting terminal back up pad 660, be used for being connected with magnetic head 314 so that magnetic head connecting terminal 664 comes out.All the other structures of this magnetic head fold piece combination 610 are similar substantially to the combination 310 of said head tabs, and represent with similar label.It should be noted that this cantilever 616 comprises cantilever flexible cable 302, can combine, also can not combine with flexible element 324 with flexible element 324.
The described magnetic head fold piece combination with piezo-electric micro driver and cantilever of the many embodiment of the present invention can be used in the disk drive (HDD).This disk drive can be the type that Fig. 1 showed.
Because structure, work and the assembling flow path of described disk drive are known by present technique field those of ordinary skill, repeat no more here.Described piezo-electric micro driver and cantilever can be used in any have the disk drive of piezo-electric micro driver and cantilever or have piezo-electric micro driver and cantilever other the device in.In one embodiment, described piezo-electric micro driver and cantilever are used in and have in the high-revolving disk drive.
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 and equivalent combinations of carrying out according to essence of the present invention.
Claims (26)
1. flexible cable frame combination that is used for magnetic head fold piece combination comprises:
The microdrive framework; And
Be installed in the flexible cable on this microdrive framework, wherein
This flexible cable comprises first group of connecting terminal being positioned at the one end, be positioned at second group of connecting terminal of its other end and be integrated on the described flexible cable, be used to connect the lead (trace) of above-mentioned two groups of connecting terminals.
2. flexible cable frame combination according to claim 1, it is characterized in that: described microdrive framework comprises the connecting terminal back up pad that is integrated in this microdrive framework, and this connecting terminal back up pad supports in described first group of connecting terminal and the second group of connecting terminal.
3. flexible cable frame combination according to claim 1, it is characterized in that: this microdrive framework comprises the connecting terminal back up pad that is integrated in this microdrive framework, and this connecting terminal back up pad is provided with at least one opening of one that is used for supporting and exposing described first group of connecting terminal and second group of connecting terminal.
4. flexible cable frame combination according to claim 1 is characterized in that: this microdrive framework comprises the end back up pad that is connected on the described magnetic head fold piece combination cantilever, support the top back up pad of described magnetic head fold piece combination magnetic head and connect described should end back up pad and a pair of side arm of top back up pad.
5. flexible cable frame combination according to claim 4, it is characterized in that further comprising the piezoelectric element that is installed on each side arm, each piezoelectric element can be excited and cause that the selectivity of side arm moves, and moving of described side arm can cause that top board moves, and then magnetic head is moved.
6. flexible cable frame combination according to claim 4, it is characterized in that: this flexible cable comprises the insulation course that contains at least one top and bottom, this top is installed on the top back up pad of described microdrive framework, and this bottom is installed on the end back up pad of described microdrive framework.
7. flexible cable frame combination according to claim 6 is characterized in that: described bottom comprises the cantilever connecting terminal, be used for described cantilever on corresponding connecting terminal electrically connect.
8. flexible cable frame combination according to claim 6 is characterized in that: described top comprises the magnetic head connecting terminal, be used for described magnetic head on corresponding connecting terminal electrically connect.
9. flexible cable frame combination according to claim 8 is characterized in that: described flexible cable is installed on the front surface of described microdrive framework, and this front surface is towards described magnetic head.
10. flexible cable frame combination according to claim 8 is characterized in that: described flexible cable is installed on the rear surface of microdrive framework, and this rear surface is said head dorsad.
11. flexible cable frame combination according to claim 10, it is characterized in that: described microdrive framework comprises the connecting terminal back up pad that is integrated in this microdrive framework, this connecting terminal back up pad has at least one and is used for opening that described magnetic head connecting terminal is come out, so that corresponding connecting terminal electrically connects on described magnetic head connecting terminal and the magnetic head.
12. flexible cable frame combination according to claim 6 is characterized in that further comprising being integrated in the bottom and from the extended extension in this bottom, this extension comprise with cantilever on the cantilever connecting terminal of corresponding connecting terminal electric connection.
13. flexible cable frame combination according to claim 12 is characterized in that: described flexible cable is installed on the front surface of described microdrive framework, and this front surface is towards said head.
14. flexible cable frame combination according to claim 12 is characterized in that: described flexible cable is installed on the rear surface of described microdrive framework, the described dorsad magnetic head in this rear surface.
15. flexible cable frame combination according to claim 14, it is characterized in that: this microdrive framework comprises the connecting terminal back up pad that is integrated in this microdrive framework, this connecting terminal back up pad has at least one and is used for opening that described magnetic head connecting terminal is come out, so that corresponding connecting terminal electrically connects on described magnetic head connecting terminal and the magnetic head.
16. a magnetic head fold piece combination comprises:
Contain the microdrive framework and be installed in the flexible cable frame combination of the framework flexible cable on this microdrive framework;
Magnetic head; And
Support the cantilever of above-mentioned flexible cable frame combination and magnetic head, this cantilever comprises a flexible cable cantilever combination that contains the cantilever flexible element and be installed on the flexible cable on this flexible element.
17. magnetic head fold piece combination according to claim 16 is characterized in that: this framework flexible cable comprises first group of connecting terminal being positioned at the one end, be positioned at second group of connecting terminal of its other end and be integrated on the described flexible cable, be used to connect the lead of above-mentioned two groups of connecting terminals.
18. magnetic head fold piece combination according to claim 17 is characterized in that: this microdrive framework comprises the end back up pad that is connected on the cantilever, support the top back up pad of magnetic head and connect a pair of side arm of this end back up pad and top back up pad.
19. magnetic head fold piece combination according to claim 18, it is characterized in that further comprising the piezoelectric element that is installed on each side arm, each piezoelectric element can be excited and cause that the selectivity of side arm moves, and moving of described side arm can cause that top board moves, and then magnetic head is moved.
20. magnetic head fold piece combination according to claim 18, it is characterized in that: this flexible cable comprises the insulation course that contains at least one top and bottom, this top is installed on the top back up pad of described microdrive framework, and this bottom is installed on the end back up pad of described microdrive framework.
21. magnetic head fold piece combination according to claim 20 is characterized in that: described bottom comprises the cantilever connecting terminal, be used for described cantilever on corresponding connecting terminal electrically connect.
22. magnetic head fold piece combination according to claim 20 is characterized in that: described top comprises the magnetic head connecting terminal, be used for described magnetic head on corresponding connecting terminal electrically connect.
23. magnetic head fold piece combination according to claim 16 is characterized in that: described cantilever flexible cable comprises insulation course and is integrated in cantilever lead on this insulation course that described cantilever lead and the connecting terminal that is used for being connected with external control system electrically connect.
24. a disk drive comprises:
Magnetic head fold piece combination; Described magnetic head fold piece combination comprises flexible cable frame combination, magnetic head and supports the cantilever of described flexible cable frame combination and magnetic head;
Connect actuating arm with described magnetic head fold piece combination;
Disk; And
The Spindle Motor of rotatable this disk, wherein
Described flexible cable frame combination comprises:
The microdrive framework; And
Be installed on the flexible cable on this microdrive framework, wherein
This flexible cable comprises first group of connecting terminal being positioned at the one end, be positioned at second group of connecting terminal of its other end and be integrated on the described flexible cable, be used to connect the lead (trace) of above-mentioned two groups of connecting terminals.
25. a method of making magnetic head fold piece combination comprises:
The microdrive framework is provided;
The framework flexible cable is installed on described microdrive framework, and wherein this framework flexible cable comprises first and second group connecting terminal and with above-mentioned two groups of integral wires that connecting terminal couples together;
Piezoelectric element is installed on the described microdrive framework;
This microdrive framework is installed on the cantilever;
Cantilever lead on described piezoelectric element and the cantilever is electrically connected;
Magnetic head is installed on the described microdrive framework;
Cantilever lead on described magnetic head and the cantilever is electrically connected;
Carry out visual examination;
Test magnetic head and piezoelectric property; And
Clean.
26. manufacture method according to claim 25 is characterized in that further comprising the step that a cantilever flexible cable is installed on the described cantilever with the integrated cantilever lead that links to each other with external control system.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100912569A CN100545912C (en) | 2005-08-19 | 2005-08-19 | Be used for the flexible cable frame combination and the combination of flexible cable cantilever of disk drive |
| JP2006222288A JP2007052909A (en) | 2005-08-19 | 2006-08-17 | Flexible cable frame assembly for hga of disk device, and head gimbal assembly using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100912569A CN100545912C (en) | 2005-08-19 | 2005-08-19 | Be used for the flexible cable frame combination and the combination of flexible cable cantilever of disk drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1917044A true CN1917044A (en) | 2007-02-21 |
| CN100545912C CN100545912C (en) | 2009-09-30 |
Family
ID=37738022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100912569A Expired - Fee Related CN100545912C (en) | 2005-08-19 | 2005-08-19 | Be used for the flexible cable frame combination and the combination of flexible cable cantilever of disk drive |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2007052909A (en) |
| CN (1) | CN100545912C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295513B (en) * | 2007-04-25 | 2012-09-05 | 新科实业有限公司 | Cantilever member and manufacturing method thereof, magnetic head tab combination and disk drive unit |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009266348A (en) * | 2008-04-28 | 2009-11-12 | Fujitsu Ltd | Head suspension and disk device |
| JP5570111B2 (en) * | 2008-12-18 | 2014-08-13 | エイチジーエスティーネザーランドビーブイ | Head gimbal assembly and disk drive |
| CN102148039B (en) * | 2010-02-10 | 2015-02-04 | 新科实业有限公司 | Magnetic head, magnetic head gimbal assembly and disk driving unit |
-
2005
- 2005-08-19 CN CNB2005100912569A patent/CN100545912C/en not_active Expired - Fee Related
-
2006
- 2006-08-17 JP JP2006222288A patent/JP2007052909A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295513B (en) * | 2007-04-25 | 2012-09-05 | 新科实业有限公司 | Cantilever member and manufacturing method thereof, magnetic head tab combination and disk drive unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100545912C (en) | 2009-09-30 |
| JP2007052909A (en) | 2007-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7663843B2 (en) | Flex cable frame assembly for micro-actuator and flex cable suspension assembly for HGA of disk drive device | |
| US7768746B2 (en) | Rotational micro-actuator with a rotatable plate, head gimbal assembly and disk drive device with the same | |
| US7719798B2 (en) | Rotational micro-actuator integrated with suspension of head gimbal assembly, and disk drive unit with the same | |
| US8593764B1 (en) | Method for fine actuation of a head during operation of a disk drive | |
| US7411764B2 (en) | Head gimbal assembly with precise positioning actuator for read/write head and disk drive device with the head gimbal assembly | |
| US7417831B2 (en) | Micro-actuator and head gimbal assembly for a disk drive device | |
| US7535680B2 (en) | Micro-actuator with integrated trace and bonding pad support | |
| CN1967663A (en) | Film piezoelectric micro driver and head tablet pack combination and disk drive unit | |
| US7538984B2 (en) | Rotational PZT micro-actuator with a rotatable plate | |
| US7593191B2 (en) | HGA having separate dimple element, disk drive unit with the same, and manufacturing method thereof | |
| CN1797550A (en) | Composition of micro driver unit, vibration damper, fold piece set of magnetic head, and disc drive unit | |
| CN1917044A (en) | Combination of flexible electric cable frame, and combination of flexible cable cantalever in use for disk drive | |
| CN1979643A (en) | Micro driver, magnetic head folded-piece combination and magnetic-disc driving unit | |
| US7623321B2 (en) | Micro-actuator including electrical connection shifting circuit, head gimbal assembly and disk drive unit with the same | |
| US20080002304A1 (en) | Micro-actuator mounting arrangement and manufacturing method thereof | |
| 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 | |
| CN1949366A (en) | Testing method and system for testing magnetic head on magnetic head flap combination of magnetic disk driver | |
| CN1873783A (en) | Micro drive unit with a integrated cable, and bracket of having soldering contact | |
| CN1991984A (en) | Rotating micro-driver and disc driver element containing same | |
| CN100524470C (en) | Microdriver, magnetic head flap combination and magnetic disk driver thereof | |
| CN1920958A (en) | Micro-actuator and magnetic head tabs assembled for disk driver | |
| CN1290115C (en) | Magnet head cartridge, data memory and leading wires | |
| CN100559474C (en) | Magnetic head fold piece combination and manufacture method thereof with add-in card | |
| CN101051511A (en) | Micro ectuator, micro ectuator suspension arm part and magnetic head folding sheet combination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090930 Termination date: 20100819 |