CN101865725A - Combination of cantilever part and magnetic head folding sheet with vibrating sensor and manufacturing method thereof - Google Patents
Combination of cantilever part and magnetic head folding sheet with vibrating sensor and manufacturing method thereof Download PDFInfo
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- CN101865725A CN101865725A CN200910134192A CN200910134192A CN101865725A CN 101865725 A CN101865725 A CN 101865725A CN 200910134192 A CN200910134192 A CN 200910134192A CN 200910134192 A CN200910134192 A CN 200910134192A CN 101865725 A CN101865725 A CN 101865725A
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Abstract
The invention discloses a vibrating sensor used for a magnetic head, which comprises a base, a loading part and at least two connecting arms, wherein the loading part is formed in the base and is used for supporting the magnetic head thereon; and the connecting arms are used for connecting the base and the loading part. The vibrating sensor can agilely sense the vibration of the magnetic head, thereby keeping the flight altitude and improving the property of the magnetic head. The invention also discloses a combination of a cantilever part and a magnetic head folding sheet with the vibrating sensor, a manufacturing method thereof, and a disk driving unit.
Description
Technical field
The present invention relates to a kind of information recording disk driver element, relate in particular to a kind of cantilever part, magnetic head fold piece combination and manufacture method thereof and disc drive unit that is used for the vibration transducer of induction magnetic head vibration and has this sensor.
Background technology
Disc drive unit is a kind of common information storing device.Figure 1 shows that a traditional disc drive unit, this disc drive unit comprises and is used for writing or from the typical actuating arm 104 of these disk 101 reading of data to disk 101.Typically, (Voice-Coil Motor VCM) controls the motion of this actuating arm 104 to the main shaft voice coil motor.The top of actuating arm 104 is equipped with cantilever part 105, the magnetic head 103 of these cantilever part 105 support belt read/write heads (figure does not show).When disc drive unit operated, Spindle Motor 102 made disk 101 high speed rotating, and the air pressure that disk 103 rotations produce makes magnetic head 103 fly above disk 101.Magnetic head 103 radial surface at disk 101 under the control of VCM moves.Magnetic head moves between different tracks, thereby is implemented in the reading and writing data on the disk 101.
Because the consumer wishes that constantly disc drive unit can have bigger memory capacity, and can carry out read-write operation faster and more accurately, method miscellaneous is applied to improve the recording density of information recording disk driver element, simultaneously, the various methods that are used to improve the degree of accuracy of head position also are widely used.
A kind of magnetic head Accurate Position Control method of little track pitch be adopt two rank driver (Dual Stage Actuator, DSA).A secondary microdrive is used to control the magnetic head of aforementioned band read/write head, and microdrive is adjusted the resonance of position with compensation VCM with less ratio when one-level VCM carries out coarse adjustment.Make that so recordable track width is littler, (Tracks Per Inch, value TPI) has increased by 50%, thereby increases its recording density with the per inch track quantity of disc drive unit.
Another kind of head position control technology is that induction and the air of compensation when disk rotate tremble and the air turbulence that causes.As being to disclose in 20080229842 the United States Patent (USP) in the patent No., this air turbulence can cause the vibration of magnetic head cantilever spare, thereby makes magnetic head depart from track.Fig. 2 b-2c has showed respectively along the hatching line 6-6 of Fig. 2 a and the sectional view of 7-7.With reference to figure 2a-2c, load beam 11 is connected with substrate 10, and the flexible element 12 that magnetic head 13 is housed welds together with this load beam 11 and substrate 10.One vibration transducer 14 is by the hollow out place of adhesive at load beam 11.This vibration transducer 14 is a PZT element, this PZT element comprises top electrode 23, bottom electrode 24 and is clipped in therebetween PZT material 25 that two electrode contacts 18,19 of this vibration transducer 14 link to each other with the cantilever lead 20 of flexible element 12 by electroconductive binder 27,28 respectively.When vibration takes place, vibration transducer 14 will be responded to the cantilever part vibration on cantilever part elastic tip 22 and produce signal, adjust the position of magnetic head then according to this signal.
Fig. 3 is the side view of magnetic head fold piece combination shown in Fig. 2 a.Fig. 3 is clear to have shown that aforementioned vibration transducer 14 is installed in the junction point of substrate 10 and load beam 11, and this position is the shaping position of cantilever part.Because vibration transducer 14 is positioned at the articulated section of cantilever part, therefore vibration has lower sensitivity for the induction cantilever part, and is then lower for the vibration of magnetic head 13.Further, in the manufacture process of cantilever part and magnetic head fold piece combination, owing to need its every gram load of control and pitching composed view/upset composed view (PSA/RSA), so cantilever part must be handled through compressing tablet, this process may cause vibration transducer 14 to damage.
Therefore, be badly in need of providing a kind of improved vibration transducer of magnetic head fold piece combination that is applicable to overcome above-mentioned defective.
Summary of the invention
The object of the present invention is to provide a kind of vibration transducer, so that the vibration of the magnetic head of induction magnetic head tabs combination delicately, thereby the flying height of regulating magnetic head, the performance of raising magnetic head.
Another object of the present invention is to provide a kind of cantilever part with vibration transducer, so that the vibration of the magnetic head of induction magnetic head tabs combination delicately, thereby the flying height of regulating magnetic head, the performance of raising magnetic head.
Another object of the present invention is to provide a kind of magnetic head fold piece combination with vibration transducer, described vibration transducer is installed between magnetic head and the cantilever part, so that the vibration of the magnetic head of induction magnetic head tabs combination delicately, thereby the flying height of regulating magnetic head, the performance of raising magnetic head.
Another purpose of the present invention is to provide a kind of disc drive unit with vibration transducer, described vibration transducer is installed between magnetic head and the cantilever part, so that the vibration of the magnetic head of induction magnetic head tabs combination delicately, thereby the flying height of regulating magnetic head, the performance of raising magnetic head.
A further object of the present invention is to provide a kind of manufacture method with magnetic head fold piece combination of vibration transducer, and described vibration transducer is the vibration of the magnetic head of induction magnetic head tabs combination delicately, thus the flying height of regulating magnetic head, the performance of raising magnetic head.
In order to achieve the above object, the invention provides a kind of vibration transducer that is used for magnetic head, described vibration transducer comprises base portion, is formed at the load portion that is used to support the magnetic head that is mounted thereon in the described base portion, and the linking arm of at least two described base portions of connection and described load portion.
In one embodiment of the invention, described linking arm is with respect to the central point of described load portion.
In another embodiment of the present invention, be formed with plurality of through holes on the described load portion.Preferably, described through hole distributes with respect to the central point of described load portion.
In another embodiment of the present invention, described load portion is oval, square or circular.
In further embodiment of this invention, described vibration transducer comprise upper electrode layer, lower electrode layer and be located in described upper electrode layer and described lower electrode layer between piezoelectric layer.
The invention provides a kind of cantilever part that is used for magnetic head fold piece combination, comprise flexible element and vibration transducer, described flexible element has cantilever tongue piece, described cantilever tongue piece is used to support the magnetic head of magnetic head fold piece combination, described vibration transducer be installed on the described cantilever tongue piece and be located in described cantilever tongue piece and described magnetic head between.
The present invention also provides a kind of magnetic head fold piece combination, this magnetic head fold piece combination comprises magnetic head and cantilever part, described cantilever part comprises flexible element and vibration transducer, described flexible element has cantilever tongue piece, described cantilever tongue piece is used to support the magnetic head of magnetic head fold piece combination, described vibration transducer be installed on the described cantilever tongue piece and be located in described cantilever tongue piece and described magnetic head between.
The present invention also provides a kind of disc drive unit, comprising: magnetic head fold piece combination, and described magnetic head fold piece combination comprises magnetic head and cantilever part, described cantilever part has the cantilever tongue piece that is used to support described magnetic head; The actuating arm that is connected with described magnetic head fold piece combination; Disk; And the Spindle Motor that drives described disk rotation.Wherein, described magnetic head fold piece combination is the involving vibrations sensor also, described vibration transducer be installed on the described cantilever tongue piece and be located in described magnetic head and described cantilever tongue piece between.
The present invention also provides a kind of manufacture method of magnetic head fold piece combination, comprise: vibration transducer and cantilever part are provided, described cantilever part has cantilever tongue piece, described cantilever tongue piece has and the corresponding structure of described vibration transducer, described vibration transducer comprises base portion, is formed at the load portion that is used to support the magnetic head that is mounted thereon in the described base portion, and the linking arm of at least two described base portions of connection and described load portion; Described vibration transducer is installed to described cantilever tongue piece; And magnetic head is provided, and the load portion of described magnetic head to described vibration transducer is installed, described vibration transducer is located between described magnetic head and the described cantilever tongue piece.
Compared with prior art, the invention provides a kind of vibration transducer, this vibration transducer is installed on the cantilever tongue piece and is located between this cantilever tongue piece and the magnetic head, therefore the vibration of the magnetic head of induction magnetic head tabs combination more delicately, thereby regulate the flying height of magnetic head, improve the performance of magnetic head.
By following description and in conjunction with the accompanying drawings, technology contents of the present invention, structural attitude, institute reaches purpose and effect will become more clear, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 is the sectional perspective synoptic diagram of traditional magnetic disk driver element.
Fig. 2 a is the partial top view of traditional magnetic head fold piece combination.
Fig. 2 b is that magnetic head fold piece combination shown in Fig. 2 a is along the cut-open view of 6-6 line.
Fig. 2 c is that magnetic head fold piece combination shown in Fig. 2 a is along the cut-open view of 7-7 line.
Fig. 3 is the partial side view of magnetic head fold piece combination shown in Fig. 2 a.
Fig. 4 is the three-dimensional exploded view of the cantilever part of first embodiment of the invention.
Fig. 5 a is the partial enlarged drawing with magnetic head fold piece combination of cantilever part shown in Figure 4.
Fig. 5 b is the three-dimensional exploded view of magnetic head fold piece combination shown in Fig. 5 a.
Fig. 5 c is the synoptic diagram of the vibration transducer of magnetic head fold piece combination shown in Fig. 5 b.
Fig. 5 d is the side view of vibration transducer shown in Fig. 5 c.
Fig. 6 is the three-dimensional exploded view of the cantilever part of second embodiment of the invention.
Fig. 7 is the three-dimensional exploded view of the cantilever part of third embodiment of the invention.
Fig. 8 is the three-dimensional exploded view of the cantilever part of fourth embodiment of the invention.
Fig. 9 is the three-dimensional exploded view of the cantilever part of fifth embodiment of the invention.
Figure 10 is the three-dimensional exploded view of the cantilever part of sixth embodiment of the invention.
Figure 11 a has showed that for the synoptic diagram of magnetic head fold piece combination of the present invention magnetic head fold piece combination is at the moving situation of pitch orientation when cantilever part is impacted or shake.
Figure 11 b has showed the state of cantilever part shown in Figure 11 a behind the magnetic head that removes.
Figure 11 c has showed the waveform of the vibration signal that the vibration transducer of cantilever part shown in Figure 11 b produces.
Figure 12 a has showed that for the synoptic diagram of magnetic head fold piece combination of the present invention magnetic head fold piece combination is at the moving situation of other direction when cantilever part is impacted or shake.
Figure 12 b has showed that for the synoptic diagram of magnetic head fold piece combination of the present invention magnetic head fold piece combination is in the motion of another direction when cantilever part is impacted or shake.
Figure 13 is the vertical view of the magnetic head fold piece combination of first embodiment of the invention shown in Fig. 5 a.
Figure 14 is the stereographic map of an embodiment of head driver unit of the present invention.
Figure 15 has the process flow diagram of an embodiment of manufacture method of the magnetic head fold piece combination of vibration transducer for the present invention.
Embodiment
Describe each embodiment of the present invention below with reference to accompanying drawing, wherein, mark identical in each accompanying drawing is represented components identical.As mentioned above, the invention provides a kind of cantilever part that is used for the magnetic head fold piece combination of disc drive unit, this cantilever part comprises a vibration transducer, described vibration transducer comprises base portion, is formed at the load portion that is used to support the magnetic head that is mounted thereon in the described base portion, and at least two linking arms that connect described base portion and described load portion.Be installed on the cantilever tongue piece and and be located between described cantilever tongue piece and the magnetic head by this being had vibration transducer than soft it, sensitiveer to the induction of magnetic head vibration, thus can improve the performance of the readwrite performance and the whole magnetic disk driver element of magnetic head.
Fig. 4 has showed first embodiment of cantilever part of the present invention.As shown in Figure 4, the cantilever part 430 of present embodiment comprises load beam 404, substrate 401, articulated part 402, flexible element 403 and the vibration transducer 415 that fits together mutually.
Fig. 5 a is the local amplification plan view of a magnetic head fold piece combination, and this magnetic head fold piece combination has comprised cantilever part shown in Figure 4.With reference to Fig. 4 and Fig. 5 a, load beam 404 is used for that load force is delivered to flexible element 403 and is installed on magnetic head 405 on the described flexible element 403.Load beam 404 can be made by any material with suitable rigidity, such as stainless steel etc., transmits load force to flexible element 403 so that it has enough hardness.Load beam 404 is connected with substrate 401 by articulated part 402.Be formed with a pilot hole 404a on this load beam 404, be used to make load beam 404 and flexible element 403 alignment.Also be formed with a salient point 404b on the load beam 404, this salient point 404b is supporting flexible element 403 with corresponding position, the center of magnetic head 405.By salient point 404b and flexible element 403 such being equipped with, can pass to the center of magnetic head 405 equably by the load force of load beam 404 generations.
Articulated part 402 1 ends are provided with mounting hole 402a, and its mounting hole 401a with substrate 401 is corresponding.Articulated part 402 parts are installed on the substrate 401, and mounting hole 402a, 401a are in alignment with each other.Articulated part 402 and substrate 401 can weld together by the laser bonding choice refreshments of plurality of distributed on articulated part 402.In addition, articulate the side that step 402c is integrally formed at articulated part 402, and contiguous its be provided with the end of mounting hole 402a, to increase the rigidity of articulated part 402.Articulated part 402 other ends extend two support chip 402b, so that articulated part 402 parts are installed on the load beam 404.
With reference to Fig. 5 c, described vibration transducer 415 comprises base portion 415a, is formed at load portion 415b and two linking arm 415c that connect described base portion 415a and described load portion 415b in the described base portion 415a.Be formed with two on the described base portion 415a and be electrically connected contact 425a, 425b, described electrical connection contact 425a, 425b electrically connect by two cantilever tongue piece 413 that connect on ball 428 and the flexible element 403.In the present embodiment, described load portion 415b is oval, and magnetic head 405 is fixedly mounted on this load portion 415b by epoxy glue.Particularly, described linking arm 415c is about the central point of described load portion 415b.Two linking arm 415c of described vibration transducer 415 are limited by the slit 415d of two bendings that form on it, described slit 415d is between described base portion 415a and described load portion 415b, and aforementioned two slit 415d are the slit that the intersection of extension in the opposite direction is shaped.Described linking arm 415c is not limited in two, can change according to concrete needs.
In conjunction with Fig. 5 d, in the present embodiment, described vibration transducer 415 comprises upper electrode layer 4151, lower electrode layer 4153 and is located in piezoelectric layer 4152 between described upper electrode layer 4151 and the described lower electrode layer 4153.Described electrical connection contact 425a, 425b (shown in Fig. 5 a) respectively with as described in upper electrode layer 4151 and lower electrode layer 4153 electrically connect.In another embodiment of the present invention, described vibration transducer 415 can be the piezoelectric of multilayer, described each layer of piezo-electric material comprise upper electrode layer, lower electrode layer and be located in described upper electrode layer and described lower electrode layer between piezoelectric layer.Described electrical connection contact 425a, 425b are by mode and each upper electrode layer 4151 and the 4153 formation electric connections of each lower electrode layer of serial or parallel connection.
With reference to Fig. 5 a-5c, described cantilever tongue piece 413 has and described vibration transducer 415 corresponding structures.Described cantilever tongue piece 413 comprises the second tongue piece 413a, takes shape in the first tongue piece 413b and two connecting link 413c in the described second tongue piece 413a, and described two connecting link 413c connect described first tongue piece 413b and the described second tongue piece 413a.Particularly, the described second tongue piece 413a comprises suspension portion 420, forms a plurality of contacts 421 in this suspension portion 420, is formed with two on the edge of the described second tongue piece 413a simultaneously and is electrically connected contact 423a, 423b.Base portion 415a, the load portion 415b of described vibration transducer 415 and linking arm 415c are corresponding with the second tongue piece 413a, the first tongue piece 413b and the connecting link 413c of cantilever tongue piece 413 respectively.Similarly, form two crooked slit 413d on the described cantilever tongue piece 413, this bending slit 413d is corresponding with the crooked slit 415d of described vibration transducer 415.In addition, the described first tongue piece 413b is oval.This first tongue piece 413b is provided with two epoxy glue contacts 435, and described vibration transducer 415 is installed on this cantilever tongue piece 413 by it, and described magnetic head 405 is installed on the described vibration transducer 415.
Alternatively, described vibration transducer 415 can be one-body molded with described cantilever tongue piece 413.
Fig. 5 a-5b has showed the detailed structure in the cantilever tongue piece zone of the magnetic head fold piece combination with cantilever part shown in Figure 4.With reference to Fig. 5 a and Fig. 5 b, the both sides of described flexible element 403 form two external trigger plates 412 respectively, and this external trigger plate 412 is used to pitching composed view/upset composed view of supporting described cantilever tongue piece 413 and controlling whole cantilever part 430.Lead 406 is divided into the first lead 406a and second lead 406b two parts, is supported by suspension portion 420 and external trigger plate 412 respectively.Magnetic head 405 is installed on the described cantilever tongue piece 413, is formed with a plurality of electrical connections contact (figure does not show) on it.Be formed at described electrical connection contact on the magnetic head 405 by the 421a that receives that is electrically connected, receive or soldering is received as gold solder, electrically connect with described contact 421, simultaneously, described contact 421 electrically connects with the described first lead 406a.Described vibration transducer 415 is located between described magnetic head 405 and the described cantilever tongue piece 413, and its load portion 415b links to each other with the first tongue piece 413b.Be electrically connected contact 425a and 425b and form and electrically connect, thereby form electric connection with the second lead 406b of described flexible element 403 by be electrically connected contact 423a and 423b on solder sphere 428 and the cantilever tongue piece 413.
Fig. 6 has showed the cantilever part 530 of second embodiment of the invention.The structure similar of the cantilever part 430 of first embodiment shown in the structure of the cantilever part 530 of second embodiment and Fig. 5 b, except the structure of the connecting link 513c of the linking arm 515c of vibration transducer 515 and cantilever tongue piece 513, and the shape of the load portion 515b and the first tongue piece 513b.With reference to Fig. 6, in this enforcement, two linking arm 515c of vibration transducer 515 are about the center line symmetry along the length direction of vibration transducer 515 of described load portion 515b.Correspondingly, two of cantilever tongue piece 513 connecting link 513c are about the center line symmetry along the length direction of cantilever tongue piece 513 of the described first tongue piece 513b.The shape of the described load portion 515b and the first tongue piece 513b is circle.
Fig. 7 has showed the cantilever part 630 of third embodiment of the invention.The structure similar of the structure of the cantilever part 530 of the 3rd embodiment and the cantilever part 530 of second embodiment shown in Figure 6, its difference are the structure of the connecting link 613c of the linking arm 615c of vibration transducer 615 and cantilever tongue piece 613.As shown in Figure 7, two linking arm 615c of vibration transducer 615 are about the center line symmetry along vibration transducer 615 Widths of described load portion 615b, and arrange in line basically, and the direction of this straight line is identical with the length direction of cantilever part 630.Correspondingly, two of cantilever tongue piece 613 connecting link 613c are about the center line symmetry along cantilever tongue piece 613 Widths of the described first tongue piece 613b.
Fig. 8 has showed the cantilever part 730 of fourth embodiment of the invention.The structure similar of the structure of the cantilever part 730 of the 4th embodiment and the cantilever part 630 of the 3rd embodiment shown in Figure 7, its difference are the structure of the connecting link 713c of the linking arm 715c of vibration transducer 715 and cantilever tongue piece 713.With reference to Fig. 8, in the present embodiment, vibration transducer 715 is provided with four linking arm 715c, and described four linking arm 715c are about the central point of load portion 715b.Article four, the arcuate slot 715d that is formed on the described vibration transducer 715 is defined as circle with described load portion 715b.Correspondingly, four of described cantilever tongue piece 713 connecting link 713c are about the central point of the first tongue piece 713b.The slit 713d that is formed on the described cantilever tongue piece 713 is defined as circle with the described first tongue piece 713b.
Fig. 9 has showed the cantilever part 830 of fifth embodiment of the invention.The structure similar of the structure of the cantilever part 830 of the 5th embodiment and the cantilever part 730 of the 4th embodiment shown in Figure 8, its difference are the shape of the first tongue piece 813b of the load portion 815b of vibration transducer 815 and cantilever tongue piece 813.With reference to Fig. 9, in the present embodiment, four linking arm 815c of vibration transducer 815 are about the central point of load portion 815b.Four L type slit 815d are formed on around the load portion 815b of described vibration transducer 815, and it is square having defined described load portion 815b.Correspondingly, four of described cantilever tongue piece 813 connecting link 813c are about the central point of the first tongue piece 813b.Being formed at four L type slit 813d on the described cantilever tongue piece 813, to have defined the described first tongue piece 813b be square.
Figure 10 has showed the cantilever part 930 of sixth embodiment of the invention.The structure similar of the structure of the cantilever part 930 of the 6th embodiment and the cantilever part 730 of the 4th embodiment shown in Figure 8, its difference are to form four through holes 916 and 917 respectively on the first tongue piece 913b of the load portion 915b of vibration transducer 915 and cantilever tongue piece 913.With reference to Figure 10, in the present embodiment, four linking arm 915c of vibration transducer 915 are about the central point of load portion 915b.Described through hole 916 is also about the central point of described load portion 915b.Correspondingly, four of described cantilever tongue piece 913 connecting link 913c are about the central point of the first tongue piece 913b.Described through hole 917 is also about the central point of the described first tongue piece 913b.Described through hole 916 and 917 can further reduce the hardness of cantilever part 930, vibrates with induction magnetic head thereby obtain more height sensitivity.
Figure 11 a-11b has showed the course of work of vibration transducer 415.With reference to Figure 11 a, when cantilever part 430 met with impact or vibrations, magnetic head 405 will move along its pitch orientation (X-direction) against salient point (figure does not show).Because form slit 415d on the vibration transducer 415, described cantilever tongue piece 413 has structure corresponding with it, these two kinds of structures are the soft structure, so include piezoelectric and be installed in vibration transducer 415 motion of induction magnetic head 405 easily of magnetic head 405 belows, thereby deform and produce a vibration signal that certain frequency is arranged.Figure 11 c has showed the signal waveform of this vibration signal.This signal passes to by lead 406 on the integrated chip of printed circuit board (PCB) combination of disc drive unit (figure do not show), servo-drive system will detect described vibration signal before impact event just will take place, and the read/write by this vibration signal control head, for example, stop the read-write capability of magnetic head and magnetic head moved to home (resting on touchdown area or the ramp structure).Therefore, impact the damage that also can prevent magnetic head and/or disk even meet with.Similarly, if only meet with vibrations in the magnetic head operational process, described servo-drive system can be fed back in its servo closed-loop system and compensation vibration, and the position of magnetic head 405 will be adjusted so that obtain a stable flying height and dynamic property.
With reference to Figure 12 a, in another case, when impact or vibrations when the Y direction is added on the cantilever part 430, magnetic head 405 moves along reverses direction (Y direction).Shown in Figure 12 b, in another situation, when impact or vibrations when the Z direction is added on the cantilever part 430, magnetic head 405 will about (Z-direction) motion.With regard to vibration transducer 415, because its load portion 415b links to each other with base portion 415a by two linking arm 415c, vibration transducer 415 deforms easily and produces the vibration signal with certain frequency, this vibration signal (sees that Fig. 5 a) passes on the integrated chip of printed circuit board (PCB) combination of disc drive unit (figure do not show) by lead 406, servo-drive system will detect described vibration signal before impact event just will take place, and the read/write by this vibration signal control head, for example, stop magnetic head read-write capability and magnetic head moved to home (resting on touchdown area or the ramp structure).Therefore, can under the situation that impact event takes place, prevent the damage of magnetic head and/or disk.Similarly, if in the magnetic head operational process, have only shock event to take place, described servo-drive system can be fed back in its servo closed-loop system and compensation vibration, and the position of magnetic head 405 will be adjusted so that reach a stable flying height and dynamic property.
With reference to Figure 13, the magnetic head fold piece combination 400 of the embodiment of the invention comprises cantilever part 430 and the magnetic head 405 that is carried on the described cantilever part 430.Described cantilever part 430 comprises vibration transducer 415, load beam 404, substrate 401, articulated part 402 and the flexible element 403 that fits together mutually.Moulding mounting hole 402a on the described articulated part 402, this mounting hole 402a are used for described articulated part 402 is assembled into described substrate 401.Described magnetic head 405 is installed on the described flexible element 403.Described vibration transducer 415 is installed between described magnetic head 405 and the described cantilever tongue piece 413.
It should be noted that replaceable any one in the cantilever part of describing in the foregoing description 530,630,730,830 and 930 of described cantilever part 430.
Figure 14 is an embodiment 100 of disc drive unit of the present invention.Described disc drive unit 100 comprises magnetic head fold piece combination 400, and 500, the one groups of spinning disks 200 of actuating arm that are connected with described magnetic head fold piece combination 400 drive the Spindle Motor 300 that described disk 200 rotates, and above assembly is installed in the housing 600.The concrete structure and the assembling process of disc drive unit of the present invention all are well known to those skilled in the art, and are not described in detail in this.
Figure 15 has showed the key step among the embodiment of magnetic head fold piece combination manufacture method of the present invention.This manufacture method may further comprise the steps: 11) vibration transducer and a cantilever part are provided, described cantilever part has cantilever tongue piece, described cantilever tongue piece has and the corresponding structure of described vibration transducer, and described vibration transducer comprises base portion, is formed at load portion and at least two linking arms that connect described base portion and described load portion in the described base portion; 12) described vibration transducer is installed to described cantilever tongue piece; 13) provide a magnetic head and described magnetic head is installed to the load portion of described vibration transducer, described vibration transducer is located between described magnetic head and the described cantilever tongue piece.
Preferably, described vibration transducer to the step on the described cantilever tongue piece being installed comprises: connect the load portion and the described cantilever tongue piece of described vibration transducer, as being undertaken bonding by epoxide-resin glue; And be electrically connected described vibration transducer and described cantilever part.
The manufacture method of described magnetic head fold piece combination is equally applicable to the manufacturing of magnetic head fold piece combination among above-mentioned other embodiment.
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 (27)
1. a vibration transducer that is used for magnetic head is characterized in that, comprising:
Base portion;
Load portion is used to support the magnetic head that is installed on it, and described load portion is formed in the described base portion; And
At least two linking arms, described linking arm connect described base portion and described load portion.
2. vibration transducer as claimed in claim 1 is characterized in that: described linking arm is about the central point of described load portion.
3. vibration transducer as claimed in claim 1 is characterized in that: be formed with plurality of through holes on the described load portion.
4. vibration transducer as claimed in claim 3 is characterized in that: described through hole distributes about the central point of described load portion.
5. vibration transducer as claimed in claim 1 is characterized in that: described load portion is for oval, square or circular.
6. vibration transducer as claimed in claim 1 is characterized in that: described vibration transducer comprise upper electrode layer, lower electrode layer and be located in described upper electrode layer and described lower electrode layer between piezoelectric layer.
7. a cantilever part that is used for magnetic head fold piece combination is characterized in that, comprising:
Flexible element, described flexible element has cantilever tongue piece, and described cantilever tongue piece is used to support the magnetic head of magnetic head fold piece combination; And
Vibration transducer, described vibration transducer be installed on the described cantilever tongue piece and be located in described cantilever tongue piece and described magnetic head between.
8. cantilever part as claimed in claim 7 is characterized in that: described vibration transducer comprises base portion, is formed at the load portion that is used to support the magnetic head that is mounted thereon in the described base portion, is connected the linking arm of described base portion and described load portion with at least two;
Described cantilever tongue piece has and the corresponding structure of described vibration transducer.
9. cantilever part as claimed in claim 8 is characterized in that: form at least two on the described base portion and be electrically connected the contact, described cantilever tongue piece comprises:
First tongue piece that is connected with described base portion;
Second tongue piece, described second tongue piece is provided with plural contacts, and described contact forms electric connection with the contact that is electrically connected of described magnetic head and described base portion; And
At least two connecting links that connect described first tongue piece and described second tongue piece.
10. cantilever part as claimed in claim 8 is characterized in that: described linking arm is about the central point of described load portion.
11. cantilever part as claimed in claim 8 is characterized in that: be formed with plurality of through holes on the described load portion.
12. cantilever part as claimed in claim 11 is characterized in that: described through hole distributes about the central point of described load portion.
13. cantilever part as claimed in claim 8 is characterized in that: described load portion is for oval, square or circular.
14. cantilever part as claimed in claim 8 is characterized in that: described vibration transducer comprise upper electrode layer, lower electrode layer and be sandwiched in described upper electrode layer and described lower electrode layer between piezoelectric layer.
15. cantilever part as claimed in claim 8 is characterized in that: described vibration transducer and described cantilever tongue piece are one-body molded.
16. a magnetic head fold piece combination is characterized in that, comprising:
Magnetic head;
Cantilever part, described cantilever part comprises:
Flexible element, described flexible element has cantilever tongue piece, and described cantilever tongue piece is used to support the magnetic head of magnetic head fold piece combination, and
Vibration transducer, described vibration transducer be installed on the described cantilever tongue piece and be located in described cantilever tongue piece and described magnetic head between.
17. magnetic head fold piece combination as claimed in claim 16, it is characterized in that: described vibration transducer comprises base portion, is formed at the load portion that is used to support the magnetic head that is mounted thereon in the described base portion, is connected the linking arm of described base portion and described load portion with at least two;
Described cantilever tongue piece has and the corresponding structure of described vibration transducer.
18. magnetic head fold piece combination as claimed in claim 17 is characterized in that: form at least two on the described base portion and be electrically connected the contact, described cantilever tongue piece comprises:
First tongue piece that is connected with described base portion;
Second tongue piece, described second tongue piece is provided with plural contacts, and described contact forms electric connection with the contact that is electrically connected of described magnetic head and described base portion; And
At least two connecting links that connect described first tongue piece and described second tongue piece.
19. magnetic head fold piece combination as claimed in claim 18 is characterized in that: described linking arm is about the central point of described load portion.
20. cantilever part as claimed in claim 17 is characterized in that: be formed with plurality of through holes on the described load portion.
21. cantilever part as claimed in claim 17 is characterized in that: described through hole distributes about the central point of described load portion.
22. cantilever part as claimed in claim 17 is characterized in that: described load portion is for oval, square or circular.
23. a disc drive unit is characterized in that, comprising:
Magnetic head fold piece combination, described magnetic head fold piece combination comprises magnetic head and cantilever part, described cantilever part has the cantilever tongue piece that is used to support described magnetic head;
The actuating arm that is connected with described magnetic head fold piece combination;
Disk; And
Drive the Spindle Motor of described disk rotation;
It is characterized in that: described magnetic head fold piece combination is the involving vibrations sensor also, described vibration transducer be installed on the described cantilever tongue piece and be located in described magnetic head and described cantilever tongue piece between.
24. disc drive unit as claimed in claim 23 is characterized in that: described vibration transducer comprises:
Base portion;
Load portion is used to support the magnetic head that is installed on it, and described load portion is formed in the described base portion; And
At least two linking arms, described linking arm connect described base portion and described load portion; And
Described cantilever tongue piece has and the corresponding structure of described vibration transducer.
25. disc drive unit as claimed in claim 24 is characterized in that: form at least two on the described base portion and be electrically connected the contact, described cantilever tongue piece comprises:
First tongue piece that is connected with described base portion;
Second tongue piece, described second tongue piece is provided with plural contacts, and described contact forms electric connection with the contact that is electrically connected of described magnetic head and described base portion; And
At least two connecting links that connect described first tongue piece and described second tongue piece.
26. the manufacture method of a magnetic head fold piece combination is characterized in that, comprising:
Vibration transducer and cantilever part are provided, described cantilever part has cantilever tongue piece, described cantilever tongue piece has and the corresponding structure of described vibration transducer, described vibration transducer comprises base portion, is formed at the load portion in the described base portion, and the linking arm of at least two described base portions of connection and described load portion;
Described vibration transducer is installed to described cantilever tongue piece; And
One magnetic head is provided and the load portion of described magnetic head to described vibration transducer is installed, described vibration transducer is located between described magnetic head and the described cantilever tongue piece.
27. method as claimed in claim 26 is characterized in that: the step that described vibration transducer is installed comprises:
Connect described load portion to described cantilever tongue piece; And
Be electrically connected described vibration transducer and described cantilever part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910134192A CN101865725A (en) | 2009-04-14 | 2009-04-14 | Combination of cantilever part and magnetic head folding sheet with vibrating sensor and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910134192A CN101865725A (en) | 2009-04-14 | 2009-04-14 | Combination of cantilever part and magnetic head folding sheet with vibrating sensor and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101865725A true CN101865725A (en) | 2010-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910134192A Pending CN101865725A (en) | 2009-04-14 | 2009-04-14 | Combination of cantilever part and magnetic head folding sheet with vibrating sensor and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101865725A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105519231A (en) * | 2013-09-09 | 2016-04-20 | 罗伯特·博世有限公司 | Shock sensor and electronic device |
| CN110282070A (en) * | 2019-06-28 | 2019-09-27 | 哈尔滨工业大学 | A kind of integrated form piezoelectric vibration resistance absorber of embeddable wall surface |
| CN114689165A (en) * | 2020-12-28 | 2022-07-01 | 财团法人工业技术研究院 | Sensing device with prepressing element |
-
2009
- 2009-04-14 CN CN200910134192A patent/CN101865725A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105519231A (en) * | 2013-09-09 | 2016-04-20 | 罗伯特·博世有限公司 | Shock sensor and electronic device |
| CN105519231B (en) * | 2013-09-09 | 2018-12-07 | 罗伯特·博世有限公司 | Vibrating sensor and electronic device |
| CN110282070A (en) * | 2019-06-28 | 2019-09-27 | 哈尔滨工业大学 | A kind of integrated form piezoelectric vibration resistance absorber of embeddable wall surface |
| CN110282070B (en) * | 2019-06-28 | 2021-11-16 | 哈尔滨工业大学 | Integrated piezoelectric vibration resistance reducer capable of being embedded into wall surface |
| CN114689165A (en) * | 2020-12-28 | 2022-07-01 | 财团法人工业技术研究院 | Sensing device with prepressing element |
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Application publication date: 20101020 |