CN1540661B - Suspension with aerodynamically shaped load beam - Google Patents
Suspension with aerodynamically shaped load beam Download PDFInfo
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- CN1540661B CN1540661B CN 200310101579 CN200310101579A CN1540661B CN 1540661 B CN1540661 B CN 1540661B CN 200310101579 CN200310101579 CN 200310101579 CN 200310101579 A CN200310101579 A CN 200310101579A CN 1540661 B CN1540661 B CN 1540661B
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Abstract
A suspension with aerodynamically shaped load beam, for supporting a read/write head slider over a media surface. The suspension includes a load beam, a base plate interface region, and a base plate. The load beam has a proximal end, a distal end and longitudinal centerline. A localized stiffening portion is raised above the load beam, and is connected to the load beam by rounded side edges. The base plate interface region is coupled to a proximal end of the load beam, and provides a pre-load bend. Finally, base plate is coupled to the base plate interface region such that the base plate is coupled to a side of the base plate interface region that is opposite the media surface.
Description
Technical field
The present invention generally relates to suspension link, more particularly relates to but is not limited to be used for the suspension link of supporting read/write head slider pad above the memory disc of disk drive.
Background technology
The medium that computing machine generally needs numerical data to store and to fetch.Proved that now magnetisable (hard) layer on disk is a kind of reliable medium of storing and fetching data.But also often use the disk drive of other type such as CD drive.From the hard disk reading of data with become parts that generally use of computer system to its disc driver that writes data.
Disc driver generally includes a magnetic track near arm.This magnetic track generally includes a read/write head assemblies, a loading beam, is used for the motion magnetic track near an actuated components of arm and a read/write head and the slider pad that is supported by read/write head assemblies near arm.Read/write head slider pad or slider pad have an air-supported surface usually, and this air-supported surface comprises some tracks or all interorbital cavitys, to help slider pad flight.
In order to remember position or data block near one on the hard disk, read/write head is positioned in the magnetic disk surface top, and disk rotates with substantially invariable speed simultaneously.By motion read/write head radially above the dish that rotates, just can the arrival dish on all memory positions.Because read/write head be connected aerodynamics be configured to above the panel surface on the slider pad that flies on the mattress to hang, so this is commonly referred to as " flight ".
In traditional disc driver, a plurality of disks are connected to a main shaft and rotate around it.Each disk has two the straight substantially surfaces that can store data.Usually, these disks pile up with relation parallel to each other.Slider pad and magnetic head are designed to move in the space between adjacent discs, and simultaneously near the flight of magnetic disk surface place.Slider pad is connected to the end of a thin arm shape structure (being called suspension gimbal joint assembly (SGA)), and this suspension gimbal joint assembly is inserted in the space between the two adjacent disks.This suspension gimbal joint assembly make material and thickness makes it that flexibility be arranged slightly, and allow when magnetic head flies to be suspended in the rotating disk surface, to measure vertical location.
Usually, suspension gimbal joint assembly is installed and is supported by an actuator arm.Actuator arm can selectively be positioned at the data track of a selected disk or data block top by a rotating actuator, with from selected data block reading of data or write data.Traditionally, this actuator can be designed as many forms, and most of disc drivers of a generation adopt a kind of actuator that is called rotatable voice coil actuator type now.Usually, this rotatable voice coil actuator comprises the pivot on the actuator housing that is attached at disc driver.Install and be arranged to the rotational plane of its central axis for one perpendicular to disk.One actuator casing is pivotably mounted on the pivotal axis, and supports a coil, and this coil is supported in by in one group of magnetic field that permanent magnet produced.
When this coil is applied controlled direct current, just form an electromagnetic field, the magnetic field interaction of this electromagnetic field and near the permanent magnet coil.This causes actuator casing to rotate according to the known Lorentz relation of people.When actuator casing rotated, read/write head crossed the data-track on the disk with regard to radial motion.The control of magnetic head inter-track motion on magnetic disk surface is normally finished by the use closed loop servo system.When disc driver being sent one during, just between the position that will carry out data transmission on the position of the at present relative disk of magnetic head and the disk, compare near instruction.If magnetic head has been positioned at desired magnetic track top at present, disc driver just waits for that correct circumferential position turns to the below of magnetic head, begins desired data transmission then simply so.If but this transmission is to occur in a position that is not outside the actuator present position, servo-control system is just determined distance and the direction that actuator must move so, magnetic head is taken to the goal track top.Based on such judgement, servo-control system just applies controlled direct current to the coil of actuator voice coil motor, and this causes actuator to move to desired goal track from present track location.
When disk pack unit during with high-speed rotation, the air of contiguous rotating disk or all disks also moves.During by actuator with around the fixed sturcture of disk pack unit, because turbulent flow and friction, these air can produce undesired vibration in disc driver and air resistance loses at the air of these motions.These flow interfering may cause disk, read/write head and actuator vibration, make accurate tracking operation become difficult.Bigger power is used in air resistance loss requirement for rotating disk.Sharply increase when in addition, the rotating speed of air resistance loss and the disk of vibration in disc driver increases.The vibration of these outsides may be at loading beam and universal joint reed resonant frequency place excitation loading beam and universal reed separately, thereby the motion of any input or outside vibration all may be amplified significantly, thereby cause the flight characteristics instability or the misalignment of the relative magnetic disk surface of read/write head.
At present, in high performance disc driver, disk is with per minute 10,000 and 15,000 rotational speed of changeing (RPM).Expectation is in design in the future, and the rotating speed of disk will constantly increase.This will further worsen the problem of present existing air resistance and vibration.In addition, owing to constantly require to increase the storage capacity of disc driver in industry, the track density on the expectation magnetic disk surface or the magnetic track quantity of per inch will increase.When magnetic track becomes more hour,,, vibration problem more bothers so will becoming because the accurate tracking of head slider becomes more difficult.
Two rotate the turbulent airflow that is produced between motherboard or all disks impacts suspension gimbal joint assembly, so that has occurred higher unrepeatable deflection on interior magnetic head.Inner magnetic head is that those are attached on the actuator and are positioned at read/write head between two disks.That is to say that when seeing, head slider all has a disk with the below above it in section.In addition, because two suspension gimbals joint assembly is closely close each other, so turbulent air can make generation communication between the two.A kind of solution commonly used that alleviates this effect is to increase the disk spacing.But owing to the form factors of rigid disks driver weakens, when wanting high power capacity and high-performance simultaneously, with regard to the spacing of more difficult increase disk.Therefore, want to have a kind of air resistance that can alleviate also to keep the suspension gimbal joint assembly of valuable Z simultaneously to height gap.
One or more solutions that provide in these and/or the other problem are provided embodiments of the invention, and prior art has other advantage relatively.
Summary of the invention
The present invention relates to a kind of suspension that is used for above a dielectric surface, supporting a head slider.This suspension comprises: a substrate interface area, and it provides the sweep of a prestrain; A substrate that is connected with the substrate interface area, this substrate be connected to the substrate interface area on the aspectant side of media table; One loading beam, it has a near-end near substrate, a terminal and longitudinal centre line away from substrate, and the near-end of described loading beam is connected to the substrate interface area; And a local reinforcing section that above the longitudinal centre line of loading beam, exceeds, it is connected between the near-end and far-end of loading beam by the edge that becomes fillet.
Another aspect of the present invention relates to a kind of suspension that is used for supporting the read/write head slider pad above dielectric surface, and it comprises: a substrate interface area, and it is connected to a near-end near substrate of loading beam, and the sweep of a prestrain is provided; A substrate that is connected with the substrate interface area, this substrate be connected to the substrate interface area on the aspectant side of media table; One loading beam, it has a near-end and the end away from substrate near substrate; And a local reinforcing section that above loading beam, exceeds and be connected to loading beam, this part reinforcing section is the aerodynamics moulding, wherein, suspension constitutes with stacking material.
Detailed description below having read also seen after the relevant accompanying drawing, will become clear as the further feature and the advantage of the characteristics of all embodiment of the present invention.
Description of drawings
Fig. 1 is the axonometric three-dimensional view of a disc driver.
Fig. 2 is the vertical view of an actuator arm.
Fig. 3 A is the vertical view of a head suspension assembly.
Fig. 3 B is the side view of the head suspension assembly shown in Fig. 3 A.
Fig. 3 C is the end-view of the head suspension assembly shown in Fig. 3 A.
Fig. 4 is a prior art suspension and according to the Bode diagram of the frequency response of suspension of the present invention.
Fig. 5 is the enlarged side view of second shape of a prior art suspension.
Embodiment
Fig. 1 is the axonometric three-dimensional view of embodiments of the invention one disc driver 100 that can use therein.Disc driver 100 comprises that one has the housing and a top cover (not shown) of substrate 102.Disc driver 100 also comprises a disk pack 106, and this disk pack 106 is installed on the spindle drive motor by a disk chucking device 108.Disk pack 106 comprises a plurality of independent disks, and they are mounted to around central axis 109 and rotate jointly.Each magnetic disk surface has a relevant magnetic disc head slider pad 110, and this slider pad 110 is installed on the disc driver 100, to carry out communication with magnetic disk surface.In example shown in Figure 1, slider pad 110 is by suspension 112 supportings, and suspension 112 is attached to the magnetic track of an actuator 116 near arm 114.Actuator as shown in Figure 1 is to be called as the pattern of rotating DYN dynamic actuator, and comprises a voice coil motor (VCM), always is shown in 118 places.Voice coil motor 118 make actuator 116 with its attached magnetic head 110 rotate around a pivot 120, magnetic head 110 is positioned at desired data track top along the curved path 122 between a disk internal diameter 124 and the disk external diameter 126.Servo electronics or controller 130 drive voice coil motor 118 based on the signal that magnetic head 110 and a principal computer (not shown) are produced.
Fig. 2 is the vertical view that illustrates according to an actuator arm 201 of an illustrative embodiment of the present invention.Actuator arm 201 comprises that a magnetic track is near arm 202, a head slider 212 and a suspension 200.For clear, only show a suspension 200 that is included in the actuator arm 201.But those those skilled in the art that will be understood that, when in disk pack, using actuator arm 201, can in actuator arm 201, comprise one second suspension 200, support a head slider 212 so that each is suspended in the corresponding disk of one in the disk pack 106 top.
Magnetic track is connected on the housing 206 of disc driver at a pivotal area 207 places near arm 202, and this pivotal area is positioned near the position of magnetic track near the near-end 208 of arm 202.Being provided with one at magnetic track near near-end 208 places of arm 202 activates or actuator means 203.Actuator means 203 makes magnetic track rotate around pivotal area 207 near arm 202, shown in arrow 205.But the structure that also can use other comes the motion magnetic track near arm 202.Such motion concerns according to the known Lorentz of people with the relevant power that causes arm 202 motion and produces.In one embodiment, actuator means 203 is voice coil loudspeaker voice coils, and the electric current that its response is applied from servo controller 130 produces electricity/magnetic field.Perhaps, actuator means 203 can be a permanent magnet, or other can apply power so that magnetic track near the member of arm 202 around pivotal area 207 radial motions.
Be attached on the end of suspension 200 is head slider 212.Head slider 212 comprises air-supported surperficial 216 (Fig. 3 B), and this air-supported surface is in the face of the head surface 106 of disk.When disk rotated, air-supported surperficial 216 of slider pad 212 waved, and until reaching balance, had just formed the Center of Pressure on air-supported surperficial 216 this moment.Head slider 212 comprises a read/write head or converter (not illustrating dividually), and it is configured to that magnetic track on disk 106 writes data or from its sense data.Head slider 212 is connected to suspension 200, and the preload force that suspension 200 is produced is applied to top, formed pressure support center.But according to specific application scenario, other location that also can be arranged on head slider 212 that is connected of head slider 212 and suspension 200.In addition, can be by using a universal joint to realize to connect the transmission with power.
Fig. 3 A schematically illustrates the vertical view of the amplification of head gimbals 200 according to an embodiment of the invention.Fig. 3 B is the side view that illustrates according to the single suspension 200 of this embodiment of the invention.Fig. 3 C is an end-view of looking near arm 202 towards magnetic track, shows all architectural features of the suspension 200 in the present embodiment.
See also Fig. 3 A now, suspension 200 comprises a Sagnetic head universal-joint assembly 210, a loading beam 220 and a substrate 270.In the embodiment shown in Fig. 3 A-3C, the effective length 280 of suspension 200 is less than 14 millimeters.In a preferred embodiment, the length 280 of suspension 200 is 11 millimeters.But also can use other length 280, as 9.5 millimeters less than 14 millimeters.
Sagnetic head universal-joint assembly (HGA) 210 supports head slider or data head 212 above memory disk 106.Sagnetic head universal-joint assembly 210 comprises gimbal arms 213 and 214 and one crossbeam 215.Crossbeam 215 is connected between gimbal arms 213 and 214, to support an installation site 217 (seeing Fig. 3 C).Installation site 217 is aligned to a part that the part of head slider 212 is connected to Sagnetic head universal-joint assembly 210, and there is a surface this installation site 217, and this shaping surface is to make this possible bonded area maximum.Sagnetic head universal-joint assembly 210 is obedient to, and head slider 212 can be waved around an axis.Sagnetic head universal-joint assembly 210 also makes head slider 212 can respond the small fluctuating in disk 106 surfaces and moves.Sagnetic head universal-joint assembly 210 also aids in strengthens head slider 212 in the axial-movement in deflection and the plane, and make the data locking of converter (not illustrating individually) relative record on disk 106 of head slider 212.
Loading beam 220 supports Sagnetic head universal-joint assembly 210 above disk 106, and provides the lead of will draw from head slider 212 or torsion line cable (flex cable) to be connected to structure on the interface circuit on the disc driver.Loading beam 220 comprises two sway braces 222 and 224 and one reinforcing section 240.The end 225 of loading beam 220 comprises a loading position 226, and it is delivered to Sagnetic head universal-joint assembly 210 and head slider 212 with preload force from the bending radius part 250 of prestrain.
Sway brace 222 and 224 is formed in the loading beam 220, and extends at angle towards the bending radius part 250 of prestrain to leave loading position 226.Sway brace 222 and 224 provides the structure of the torsion line cable of carrier band from head slider 212 to interface circuit.In addition, sway brace 222 and 224 helps to transmit preload force from the bending radius part 250 of prestrain to loading position 226.In the structure shown in Fig. 3 A, sway brace 222 and 224 width are constant from the bending radius part 250 of prestrain to loading position 226 substantially.But the width of sway brace 222 and 224 also along the longitudinal axis or center line 223 are gradually closings, make by this at the beam-ends broad at near-end 228 places of sway brace 222 and 224 and the beam-ends at 225 places is narrower endways.Although it is being open angulately each other to near-end ground from loading position 226 when the bending radius part 250 of prestrain moves that sway brace 222 and 224 is shown in Fig. 3 A, but those those skilled in the art that will appreciate that, can use other structure for sway brace 222 and 224.For example, sway brace 222 and 224 can be parallel to each other.
Form the reinforcing section 240 of a loading beam 220 in the space between sway brace 222 and 224.Reinforcing section 240 has increased the rigidity of suspension 200, also need not normally used side direction crosspiece in the prior art suspension simultaneously.Reinforcing section 240 exceeds a sway brace 222 and 224 formed surfaces 229 (Fig. 3 B) height 247.In one embodiment, height 247 is about 7.62 * 10
-5Rice (3 mil) is to about 1.27 * 10
- 4Between the rice (5 mil).But also can adopt other height, for example 6.35 * 10
-5Rice (2.5 mil) is to 1.524 * 10
-4Rice (6 mil).Reinforcing section 240 is advanced or is extended to a terminal position 242 from a proximal location 241 of loading beam 220.Suspension 200 has not had traditional side or crosspiece, because the air-flow of suspension top more regular (turbulent flow reduces), so just reduced to be attached at identical magnetic track near the communication (cross-talk) between the adjacent head suspension assembly on the arm.The side 243 of reinforcing section 240 and 244 aerodynamics are shaped to and reduce and the interactional turbulent flow of suspension.Streaming more and laminarization because the air-flow of suspension 200 tops becomes are so this aerodynamic appearance has reduced the resistance that suspension stood.In addition, the aerodynamics moulding of suspension 200 causes the possibility of unrepeatable deflection (non-repeatable run out (the NRRO)) generation that leaves the right or normal track to reduce.
In one embodiment, shown in Fig. 3 C, the reinforcing section of loading beam 220 is the shape of a hat substantially.The shape of this hat is for example for being connected to loading beam sway brace 222 and 224 side that becomes fillet 243 and 244 of reinforcing section 240.This hat-shaped structure is provided at the local stiffness in the maximum turbulence excitation area.In order both to reduce the surface area of exposure, thereby reduce the air resistance that caused, reduce the air resistance effect of suspension 200 again, etching or machining go out a hole or hole 246 in a surface 245 of reinforcing section 240.But also can use other method to form hole 246.Although Fig. 3 A shows a single hole 246 that is etched in the reinforcing section 240, but those those skilled in the art that will appreciate that, also can add a plurality of holes,, and further reduce the air resistance effect with the surface area of the exposure of further minimizing reinforcing section 240.Reduce because be exposed to the moistening surface area of air-flow,, thereby reduced all power of Different Plane so this design of suspension 200 makes suspension surface area minimum.The incidence that leaves the right or normal track that reduces to make of the surface area of getting wet reduces, and this is because the pressure differential between suspension 200 top and bottoms acts on the less area.
The bending radius part 250 of one prestrain is connected to the near-end 228 of loading beam 220.The bending radius part 250 of prestrain provides impels slider pad/head slider 212 to rely on a preload force of magnetic disk surface 106.The bending radius part 250 of prestrain has been shown in Fig. 3 B.This preload force is to produce by the sweep 251 that forms a prestrain in the bending radius part 250 of prestrain, and elastic deformation takes place when magnetic track is loaded on the disc driver 100 near arm 202, suspension 200 and slider pad/head slider 212 the bending radius part 250 of this prestrain.In one embodiment, the bending radius part 250 of prestrain provides one in the preload force of 0.5 gram force (gmf) to 4.0 gram forces (gmf) scope.But also can provide as required, other preload force.This preload force is delivered to head slider 212 via loading beam 220 and by loading position 226.
One substrate interface area 260 is connected to the near-end 252 of the bending radius part 250 of prestrain.In certain embodiments, the bending radius part 250 of prestrain is the part of substrate interface area 260.Substrate interface area 260 is provided for the surface that substrate 270 is connected to suspension 200.Substrate 270 is installed on the end face 264 of substrate interface area 260.This structure is different to the field engineering of suspension with the substrate of prior art.At existing substrate to the field engineering of suspension, substrate be attached at suspension on the side of magnetic disk surface.Substrate 270 also is provided with two flanges or shelf portion 272 and 274 that are positioned at substrate 270 both sides, be used for to torsion line be connected in the heart wiring.Flange or shelf portion 272 and 274 make the attached of torsion line cable or circuit 290 advance to interface circuit 130 via magnetic track near arm 202 from head slider 212, and reduce simultaneously the surface area amount that is exposed to the torsion line cable in the air-flow that rotating disk produces significantly.Therefore, shelf portion further helps to reduce the air resistance of suspension 200.
Suspended rack assembly 200 is connected to magnetic track near arm 202 by substrate 270.Magnetic track was realized near arm 202 and this connection by through hole 276 forging suspended rack assemblies and substrate 270 between the suspension 200.But also can use other method that suspension 200 is attached to magnetic track near on the arm 202.
An advantage of the suspension 200 of aforesaid structure is that compared with prior art, suspension 200 relative disks 106 totally are a more flat profile.In one embodiment, suspension 200 usefulness stacking materials constitute.Use stacking material can make easily manufactured and the desired rigidity of while energy suspension 200 realization work, and can produce the reinforcing section 240 of the loading beam 220 of aerodynamics moulding.But also can in the manufacturing of suspension 200, use other material of the reinforcing section that can form the aerodynamics moulding.When suspension 200 is when making with stacking material, the bending radius part 250 of loading beam 220, reinforcing section 240, substrate interface area 260 and prestrain is that the lamination with a monolithic forms.
The external vibration of suspended rack assembly and slider pad or excitation may cause slider pad and suspended rack assembly that various motions take place.According to the characteristic and the frequency of exciting force, slider pad and suspended rack assembly may stand to reverse the resonance of the vibration shape, the resonance of the swing vibration shape and the resonance of the crooked vibration shape.The motion of reversing the vibration shape is meant that the axis of suspended rack assembly in a plane rotates or reverse.The resonance of the crooked vibration shape mainly be meant the relative magnetic disk surface of suspended rack assembly on/motion down.The vibration of the swing vibration shape is meant the transverse movement in the plane and reverses.The stable flight characteristics that resonance motion is limited to guarantee head slider is very important.Especially, the resonance that the vibration shape was reversed and swung in control is important, and this is because they can cause the transverse movement of slider pad, make not relative data magnetic track aligning of magnetic head.
In the process of work, actuator 201 motion suspensions 200 are with the select location positioning head slider pad 212 on the relative magnetic disk surface 106.Because suspension 200 and actuator 201 are mechanical hook-ups, so a certain resonant frequency that exists external movement or vibration to be exaggerated.Therefore, according to the structure of the suspended rack assembly that comprises head slider 212, the frequency of external force may be consistent with each vibration shape of suspension 200, thereby and cause resonating.The vibration corresponding to reversing vibration shape resonance and the resonance of the swing vibration shape of suspension 200 may exert an influence to the arc location of head slider 212 relative magnetic disk surfaces 106.Usually, the frequency of exciting force is lower than 10,000 hertz.But outside exciting force may produce with higher frequency.
See also Fig. 4 now, there is shown prior art suspension and a Bode diagram of the frequency resonance response that leaves the right or normal track of suspension 200 according to an embodiment of the invention.Bode diagram 410 shows the frequency response of suspension length less than an exemplary prior art suspension of 14 millimeters.Occur one first at point 412 places and reverse vibration shape resonance, occur one second at point 414 places and reverse vibration shape resonance, and a swing vibration shape resonance occurs at point 416 places.In the prior art, second of the suspension resonant frequency 414 that reverses the vibration shape is lower than the resonant frequency 416 of the swing vibration shape.Because second resonant frequency that reverses the vibration shape is lower than the resonant frequency of the swing vibration shape, people want to reduce second and reverse effect that is the amplitude that the vibration shape resonates, to improve the serviceability of suspension.The suspension of prior art is by near 502 places, end of loading beam 520 but added one second shapes (shown in part among Fig. 5 501) to suspension 500 and solve this problem before Sagnetic head universal-joint assembly 510 and head slider 512.This second shape 501 adopts the shape of a little sweep, and is similar with the sweep of prestrain, but the surface of its deviation in driction disk 106.The interpolation of this second shape has further increased the complexity and the manufacturing cost of suspension 500.
Design of the present invention and feature need not to use second shape on suspension.Please refer back to Fig. 4, curve 450 shows the frequency response of one embodiment of the invention.The first torsional resonance vibration shape appears at 452 places, and the second torsional resonance vibration shape appears at 454 places, and a universal joint torsional resonance appears at 455 places, and the resonance of the swing vibration shape appears at 456 places.As can be from the Bode diagram finding of Fig. 4, the frequency 454 of the second torsional resonance vibration shape of suspension 200 be higher than the resonant frequency 456 of swinging the vibration shape according to an embodiment of the invention.In addition, when suspension 200 stood to surpass the excitation force frequency of the resonant frequency of swinging the vibration shape, other factor began to arrange the response of suspension 200.Therefore, eliminate the stability that second shape has been improved suspension 200, and reduced the step that suspension 200 is made, also reduced complexity and the cost made.Compare with the suspension of prior art, reverse and swing the resonance vibration shape for each, suspension 200 also shows overall higher resonant frequency.This higher resonant frequency reduces unrepeatable deflection.
Generally speaking, the present invention is directed to a kind of suspension 200 that is used for above a dielectric surface 106, supporting a head slider 212.This suspension 200 comprises: a loading beam 220,222,224, one substrate interface area 260, and a substrate 270.Loading beam 220,222,224 has a near-end 228, one terminal 225 and one longitudinal centre line 223.One local reinforcing section 240 exceeds above loading beam 220, and is connected to loading beam 220 by the edge 243,244 that becomes fillet.Substrate interface area 260 is connected to a near-end 228 of loading beam 220,222,224, and the sweep 251,250 of a prestrain is provided.At last, substrate 270 and substrate interface area 260 connect into substrate 270 be connected to substrate interface area 260 on one side 264 of dielectric surface 106 opposites.
Should be understood that, even listed the various characteristics and the advantage of various embodiments of the invention in the description in front, and the CONSTRUCTED SPECIFICATION of various embodiments of the invention and function, but this explanation only is illustrative, and can in principle of the present invention, modify aspect the layout of details, especially structure and part.Principle of the present invention is that complete wide in range, comprehensive implication by the term of explaining claims shows.For example, can not exceed the specific applied field incompatible change specific element of protection domain of the present invention and principle ground according to suspension, and the basic simultaneously identical functions that keeps.In addition; although preferred embodiment described here is at the head gimbals that is used for disc driver; but those those skilled in the art that will appreciate that technology of the present invention can be applied to other storage medium, and employed suspension does not exceed protection scope of the present invention and principle.
Claims (20)
1. suspension that is used for above dielectric surface supporting the read/write head slider pad comprises:
Loading beam, described loading beam has near-end and far-end, and wherein near-end is connected by two supporting arms with far-end, and described two supporting arms limit the relative both sides of described loading beam;
Local reinforcing section, described local reinforcing section raises above the plane that is limited by described loading beam, and the inside edge of each supporting arm in described two supporting arms joins described loading beam to by the lateral edges that becomes fillet, forms porose on the described local reinforcing section;
Substrate, described substrate join the described near-end of described loading beam to by the interface section; And
Wherein, be arranged essentially parallel to the position of described supporting arm from its position that is connected with the inward flange of one of described supporting arm to raised portion be to become fillet continuously to the lateral edges of each described one-tenth fillet.
2. suspension as claimed in claim 1 is characterized in that, also comprises:
Be formed on the shelf portion in the described substrate, described shelf portion is configured as and allows attached torsion line circuit.
3. suspension as claimed in claim 1 is characterized in that described loading beam is formed by stacking material.
4. suspension as claimed in claim 1 is characterized in that, described local reinforcing section has near-end and far-end, the width of described local reinforcing section in described proximal end greater than width at the described far-end of described local reinforcing section.
5. suspension as claimed in claim 1 is characterized in that, described local reinforcing section and described loading beam are made by the material of single part.
6. suspension as claimed in claim 1 is characterized in that, described local reinforcing section exceeds described loading beam 6.35 * 10
-5Rice is to 1.524 * 10
-4Height between the rice.
7. suspension as claimed in claim 1 is characterized in that, forms at least one hole in described local reinforcing section.
8. suspension as claimed in claim 1 is characterized in that the length of described suspension is less than 14 millimeters.
9. suspension as claimed in claim 8 is characterized in that, connects the near-end of described loading beam and far-end to form plane surface, there not to be second shape in described loading beam.
10. disk drive with suspension as claimed in claim 1.
11. a suspension that is used for supporting the read/write head slider pad above dielectric surface comprises:
Loading beam, described loading beam have near-end, far-end and are formed on therebetween plane;
Local reinforcing section, described local reinforcing section raises above the plane of described loading beam, and has the aerodynamics moulding by the lateral edges of a pair of continuous one-tenth fillet;
Substrate, described substrate join the described near-end of described loading beam to; And
Wherein, the hole is formed on the described local reinforcing section.
12. suspension as claimed in claim 11, it is characterized in that, described local reinforcing section has near-end and far-end, the width of described local reinforcing section in the described proximal end of described local reinforcing section greater than width at the described far-end of described local reinforcing section.
13. suspension as claimed in claim 11 is characterized in that, forms at least one hole in described local reinforcing section.
14. suspension as claimed in claim 11 is characterized in that, the length of described suspension is less than 14 millimeters.
15. disk drive with suspension as claimed in claim 11.
16. a suspension that is used for supporting the read/write head slider pad above dielectric surface comprises:
Loading beam, described loading beam has near-end and far-end, and a pair of supporting arm is arranged between near-end and the far-end and forms the plane betwixt;
Local reinforcing section, described local reinforcing section is arranged on the plane that the plane with described loading beam is separated, and joins the inward flange of each supporting arm of described loading beam to by the lateral edges of the continuous one-tenth fillet between the plane of the plane of described loading beam and described local reinforcing section;
Be formed on the hole on the described local reinforcing section; And
Substrate, described substrate join the described near-end of described loading beam to.
17. suspension as claimed in claim 16 is characterized in that, described suspension is made of stacking material.
18. suspension as claimed in claim 16 is characterized in that, described local reinforcing section has near-end and far-end, the width of described local reinforcing section in described proximal end greater than width at the described far-end of described local reinforcing section.
19. suspension as claimed in claim 16 is characterized in that, forms at least one hole in described local reinforcing section.
20. suspension as claimed in claim 16 is characterized in that, the length of described suspension is less than 14 millimeters.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/420,326 US7136261B2 (en) | 2002-06-12 | 2003-04-22 | Aerodynamically shaped load beam having reduced windage and reduced off-track PES |
| US10/420,326 | 2003-04-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1540661A CN1540661A (en) | 2004-10-27 |
| CN1540661B true CN1540661B (en) | 2011-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200310101579 Expired - Fee Related CN1540661B (en) | 2003-04-22 | 2003-10-17 | Suspension with aerodynamically shaped load beam |
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| CN (1) | CN1540661B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9013835B2 (en) * | 2011-10-14 | 2015-04-21 | Seagate Technology Llc | Low translational load suspension assembly |
| JP7314081B2 (en) * | 2020-03-11 | 2023-07-25 | 日本発條株式会社 | Disk device suspension |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5731931A (en) * | 1994-03-22 | 1998-03-24 | Hutchinson Technology Incorporated | Monocoque suspension |
-
2003
- 2003-10-17 CN CN 200310101579 patent/CN1540661B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5731931A (en) * | 1994-03-22 | 1998-03-24 | Hutchinson Technology Incorporated | Monocoque suspension |
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| Publication number | Publication date |
|---|---|
| CN1540661A (en) | 2004-10-27 |
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