CN113284519A - Inertial lock for hard disk magnetic head driver - Google Patents
Inertial lock for hard disk magnetic head driver Download PDFInfo
- Publication number
- CN113284519A CN113284519A CN202110742179.8A CN202110742179A CN113284519A CN 113284519 A CN113284519 A CN 113284519A CN 202110742179 A CN202110742179 A CN 202110742179A CN 113284519 A CN113284519 A CN 113284519A
- Authority
- CN
- China
- Prior art keywords
- wall
- arm
- block
- driving arm
- position point
- 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.)
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
- G11B5/59627—Aligning for runout, eccentricity or offset compensation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/60—Fluid-dynamic spacing of heads from record-carriers
- G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
- G11B5/6011—Control of flying height
- G11B5/6064—Control of flying height using air pressure
Abstract
The invention relates to the related technical field of disk drive, and discloses an inertial lock for a hard disk magnetic head driver, which comprises a disk body and a driving arm, wherein the middle part of the driving arm is movably provided with a rotating shaft positioned at one side of the disk body, the top end of the driving arm is fixedly provided with a magnetic head, and the top end of the driving arm is fixedly provided with a power coil. The air baffle plate and the jacking block are arranged in the brake cavity, so that in the swinging process of the shockproof block, the shockproof block has a force of pressing the rotating shaft by the airflow in the brake cavity when the air baffle plate moves, the phenomenon of translational vibration of the driving arm is reduced, meanwhile, when the shockproof block moves to a required position by the jacking block, the jacking block is pushed up by the air baffle plate under the action of inertia, and the airflow in the brake cavity is sealed to form the locking of the shockproof block, so that the phenomenon of displacement of the shockproof block caused by the inertia during rotation is prevented, and the aim of reducing the displacement of the driving arm caused by the translational vibration and the rotational vibration is finally fulfilled.
Description
Technical Field
The invention relates to the technical field related to disk drive, in particular to an inertial lock for a hard disk magnetic head drive.
Background
The inertial lock of magnetic disk head driver is used to reduce the influence of rotation vibration on writing/reading of magnetic head.
Because the smooth disk media of the first class are adopted, when the disk is stopped and pushed or dropped, the magnetic head is positioned above the disk, so that the contact between the magnetic head and the disk is caused, and the disk is damaged; meanwhile, the magnetic head continuously swings in the working process, so that the magnetic head cannot be stopped in time due to inertia, and the magnetic head moves due to translational vibration due to the inertia, so that the position of the magnetic head above the magnetic disk is deviated, and difference occurs during writing and reading, so that data on the magnetic disk cannot be written and read normally.
Disclosure of Invention
Aiming at the defects of the prior driver inertial lock in the use process, the invention provides the inertial lock for the hard disk magnetic head driver, which has the advantages of reducing the translation and rotation vibration to cause the deviation of the driving arm, reducing the deviation phenomenon and automatically realizing the separation of the magnetic head and the disk body, and solves the technical problems in the prior art.
The invention provides the following technical scheme: the utility model provides an inertia lock for hard disk magnetic head driver, includes disk body and actuating arm, the middle part movable mounting of actuating arm has the pivot that is located disk body one side, and the top fixed mounting of actuating arm has the magnetic head, the top fixed mounting of actuating arm has power coil, one side of actuating arm is equipped with the inertia that is located the power coil top and keeps off the pipe, and the inertia keeps off the inner wall of pipe and has seted up the braking chamber, the top fixed mounting of actuating arm has the shockproof piece that is located the braking chamber, and the both sides of the piece that takes precautions against earthquakes movable mounting respectively have a support arm, the top of support arm movable mounting has the fender gas board respectively, and the lateral wall fixed mounting of support arm has the compression torsional spring, compress tightly the one end of torsional spring and keep off gas board fixed mounting.
Preferably, the middle part of the shockproof block is provided with a through groove, the supporting arm is positioned at one side of the opening of the through groove, the inner wall of the shockproof block is movably provided with a top block, and two ends of the top block are matched with the side wall of the supporting arm.
Preferably, the inner wall of the top block is provided with a liquid storage cavity, the inner wall of the driving arm is provided with a tapered groove communicated with the liquid storage cavity, and a liquid medium is stored in the liquid storage cavity.
Preferably, one side of the inner wall of the top block is provided with a first point, the other side of the inner wall of the top block is provided with two points, the inner wall of the driving arm is positioned at the bottom of the conical groove and is provided with three points, the depth value of the two points is two times that of the one point, and the depth value of the one point is equal to that of the three points.
Preferably, the number of gas baffle sets up to two, and the both ends of two gas baffle all are equipped with the sealing washer, the width value of gas baffle equals with braking intracavity wall width value.
The invention has the following beneficial effects:
1. the air baffle plate and the jacking block are arranged in the brake cavity, so that in the swinging process of the shockproof block, the shockproof block has a force of pressing the rotating shaft by the airflow in the brake cavity when the air baffle plate moves, the phenomenon of translational vibration of the driving arm is reduced, meanwhile, when the shockproof block moves to a required position by the jacking block, the jacking block is pushed up by the air baffle plate under the action of inertia, and the airflow in the brake cavity is sealed to form the locking of the shockproof block, so that the phenomenon of displacement of the shockproof block caused by the inertia during rotation is prevented, and the aim of reducing the displacement of the driving arm caused by the translational vibration and the rotational vibration is finally fulfilled.
2. The liquid storage cavity is arranged in the top block, and the position of the two positions is higher than the position of the one position and the position of the three positions, so that after the liquid storage cavity is filled with a medium, the medium is completely acted in the liquid storage cavity by the swinging force, the quality of the top block is further enhanced through the medium, the inertia of the top block is increased, meanwhile, when the shockproof block does not work, the medium flows to the one position or the three positions independently, the shockproof block is influenced by the medium, the end of the driving arm is separated from the disk body, the magnetic head is prevented from being positioned on the disk, and finally the purposes of reducing the offset phenomenon and independently realizing the separation of the magnetic head and the disk body are achieved.
Drawings
FIG. 1 is a schematic cross-sectional view of the entire structure of the present invention;
FIG. 2 is an enlarged view of the point A in FIG. 1;
FIG. 3 is a schematic view of a reservoir according to the present invention.
In the figure: 1. a tray body; 2. a drive arm; 3. a rotating shaft; 4. a power coil; 5. an inertial blocking pipe; 50. a brake chamber; 6. a shock-proof block; 7. a support arm; 8. a gas baffle; 9. compressing the torsion spring; 10. a top block; 11. a liquid storage cavity; 12. a locus; 13. a second site; 14. three sites.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, an inertial lock for a hard disk magnetic head driver includes a disk body 1 and a driving arm 2, and a rotating shaft 3 is movably installed at the middle of the driving arm 2 and located at one side of the disk body 1, so that the driving arm 2 can deflect around the rotating shaft 3, and a magnetic head is fixedly installed at the top end of the driving arm 2, and a power coil 4 is fixedly installed at the top end of the driving arm 2, so that the driving arm 2 can swing through the power coil 4, and at the same time, the magnetic head on the driving arm 2 is disposed above the surface of the disk body 1, thereby constituting a main body component of a phenomenon magnetic disk, and an inertial baffle tube 5 located above the power coil 4 is disposed at one side of the driving arm 2, and a braking cavity 50 is disposed on the inner wall of the inertial baffle tube 5, and a shock-proof block 6 located in the braking cavity 50 is fixedly installed at the top end of the driving arm 2, and the both sides of taking precautions against earthquakes piece 6 movable mounting respectively have support arm 7, and the top of support arm 7 movable mounting has the gas shield 8 respectively, the lateral wall fixed mounting of support arm 7 has the compression torsion spring 9 simultaneously, and compress tightly the one end of torsion spring 9 and gas shield 8 fixed mounting, therefore make actuating arm 2 at the wobbling in-process, act on gas shield 8 through the air current in its braking chamber 50, make gas shield 8 receive the influence of air current thrust, make gas shield 8 have the motion of pushing down actuating arm 2, thereby prevent that horizontal position removal's phenomenon from appearing in its actuating arm 2.
Wherein, in order to realize its actuating arm 2 after stopping, receive inertia to take place the phenomenon of translation continuously, therefore through having seted up logical groove at the middle part of taking precautions against earthquakes piece 6, and support arm 7 is located the opening one side that leads to the groove, and there is kicking block 10 at the inner wall movable mounting of taking precautions against earthquakes piece 6, and the both ends of kicking block 10 and the lateral wall looks adaptation of support arm 7, therefore through its actuating arm 2 at the in-process of motion, after stopping through its actuating arm 2, receive inertia to make kicking block 10 contact support arm 7, and realize its sealed in braking chamber 50 through gas baffle 8, and then to the sealed extrusion of air current in its braking chamber 50, and then prevent its actuating arm 2 to produce the offset force because of inertia after the swing.
Wherein, in order to strengthen the inertia of kicking block 10 when moving, therefore through the inner wall at kicking block 10 seted up stock solution chamber 11, simultaneously, the inner wall at actuating arm 2 is seted up the bell jar that communicates with stock solution chamber 11, and the medium is deposited in stock solution chamber 11, this medium is water, the medium that oil is easy to flow, thereby in-process through actuating arm 2 wobbling, the liquid medium in the stock solution chamber 11 receives the whipping-out force and causes the whole inner chamber that flows to stock solution chamber 11 of rivers, thereby increase the gravity of its kicking block 10, and then increase the inertia that produces when its motion, cause kicking block 10 and support arm 7 to contact the back, the easier contacts with support arm 7 and promotes support arm 7 and realizes the motion of gas baffle 8.
Wherein, in order to realize that the magnetic head of the driving arm 2 end automatically falls off the disk body 1 when the driving arm 2 does not work, one side of the inner wall of the top block 10 is provided with a first position point 12, the other side of the inner wall of the top block 10 is provided with a second position point 13, meanwhile, the inner wall of the driving arm 2 is provided with a third position point 14 at the bottom of the conical groove, the depth value of the second position point 13 is twice that of the first position point 12, and the depth values of the first position point 12 and the third position point 14 are equal, thus a triangular inclined surface cavity is formed by the first position point 12, the second position point 13 and the third position point 14, so that the medium in the liquid storage cavity 11 can only act on the first position point 12 and the third position point 14 under the gravity, thus one end of the driving arm 2 has a stress trend, the end of the driving arm 2 is always separated from the disk body 1 after the end of the driving arm 2, the magnetic head can not contact with the surface of the disk body 1 to cause damage.
Wherein, in order to make the air flow that the air baffle 8 can gather in the braking chamber 50 realize the translational motion of restriction actuating arm 2, therefore establish to two through the quantity with air baffle 8, and the both ends of two air baffle 8 all are equipped with the sealing washer, and simultaneously, the width value of air baffle 8 equals with braking chamber 50 inner wall width value, therefore at the in-process of its air baffle 8 motion, through its elasticity recovery that compresses tightly torsional spring 9, can make air baffle 8 hug closely one side inner wall of braking chamber 50 all the time, make the air flow only can act on the inclined plane of air baffle 8, and after its support arm 7 ejecting its air baffle 8 and act on the opposite side inner wall of braking chamber 50 with the one end of air baffle 8, can make the sealed space of formation in the braking chamber 50, thereby realize through the air flow seal that actuating arm 2 receives the phenomenon that inertia lasts the skew after the motion.
The using method (working principle) of the invention is as follows:
when the disk body 1 starts to work, the power coil 4 is electrified to enable the driving arm 2 to rotate around the rotating shaft 3, so that the magnetic head at the end of the driving arm 2 is placed above the surface of the disk body 1, reading and writing are started, and in the working process, the power coil 4 generates magnetic force to enable the driving arm 2 to swing around the rotating shaft 3 in a reciprocating mode, so that the magnetic head can write and read on the disk body 1 (the magnetic head is not shown in the figure);
and in the process that the driving arm 2 swings clockwise, as shown in the attached drawing 1, when the driving arm 2 swings clockwise around the rotating shaft 3, the shockproof block 6 can move synchronously along with the driving arm 2, and in the process of deflection motion of the shockproof block 6, the medium in the inner cavity of the driving arm 2 is completely thrown into the liquid storage cavity 11 under stress, meanwhile, the air baffle plate 8 can face the air flow in the brake cavity 50, so that the surface of the air baffle plate 8 pushes against the air flow, the shockproof block 6 has a trend of pressing the driving arm 2 through the air baffle plate 8, thereby preventing the driving arm 2 from horizontally translating in the deflection process, meanwhile, when the driving arm 2 reaches a required position, the driving arm 2 does not move continuously, the top block 10 continues to move towards the air baffle plate 8 due to inertia, and further contacts the supporting arm 7, therefore, the supporting arm 7 is pushed to move clockwise, so that the top end of the air baffle plate 8 is in contact with the inner wall of the inertia baffle pipe 5, the brake cavity 50 is enabled to be in a sealed state, the shockproof block 6 cannot continuously swing forwards due to inertia, and the deviation caused by rotation inertia is realized;
when the driving arm 2 does not work, the two-position point 13 is higher than any one of the three-position point 14 or the one-position point 12, so that the medium in the liquid storage cavity 11 can be distributed at the positions of the one-position point 12 and the three-position point 14 only, the force distribution at one end of the driving arm 2 is uneven, the driving arm 2 always keeps the tendency of deflection, the driving arm 2 is separated from the disk body 1, and finally the magnetic head at the end of the driving arm 2 is separated from the disk body 1.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an inertia lock for hard disk magnetic head driver, includes disk body (1) and actuating arm (2), the middle part movable mounting of actuating arm (2) has pivot (3) that are located disk body (1) one side, and the top fixed mounting of actuating arm (2) has the magnetic head, the top fixed mounting of actuating arm (2) has power coil (4), its characterized in that: one side of actuating arm (2) is equipped with inertia that is located power coil (4) top and keeps off pipe (5), and inertia keeps off the inner wall of pipe (5) and has seted up braking chamber (50), the top fixed mounting of actuating arm (2) has shockproof piece (6) that are arranged in braking chamber (50), and the both sides of shockproof piece (6) respectively movable mounting have support arm (7), the top of support arm (7) respectively movable mounting have keep off gas board (8), and the lateral wall fixed mounting of support arm (7) has and compresses tightly torsional spring (9), the one end that compresses tightly torsional spring (9) and keep off gas board (8) fixed mounting.
2. An inertial lock for a hard disk head drive as claimed in claim 1, wherein: the middle part of the shockproof block (6) is provided with a through groove, the supporting arm (7) is positioned at one side of the opening of the through groove, the inner wall of the shockproof block (6) is movably provided with a top block (10), and the two ends of the top block (10) are matched with the side wall of the supporting arm (7).
3. An inertial lock for a hard disk head drive as claimed in claim 2, wherein: the inner wall of the top block (10) is provided with a liquid storage cavity (11), the inner wall of the driving arm (2) is provided with a conical groove communicated with the liquid storage cavity (11), and a liquid medium is stored in the liquid storage cavity (11).
4. An inertial lock for a hard disk head drive as claimed in claim 3, wherein: one side of the inner wall of the top block (10) is provided with a first position point (12), the other side of the inner wall of the top block (10) is provided with a second position point (13), the inner wall of the driving arm (2) is provided with a third position point (14) at the bottom of the conical groove, the depth value of the second position point (13) is two times that of the first position point (12), and the depth values of the first position point (12) and the third position point (14) are equal.
5. An inertial lock for a hard disk head drive as claimed in claim 1, wherein: the number of gas baffle (8) is established to two, and the both ends of two gas baffle (8) all are equipped with the sealing washer, the width value of gas baffle (8) equals with brake chamber (50) inner wall width value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110742179.8A CN113284519B (en) | 2021-06-30 | 2021-06-30 | Inertial lock for hard disk magnetic head driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110742179.8A CN113284519B (en) | 2021-06-30 | 2021-06-30 | Inertial lock for hard disk magnetic head driver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113284519A true CN113284519A (en) | 2021-08-20 |
| CN113284519B CN113284519B (en) | 2023-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110742179.8A Active CN113284519B (en) | 2021-06-30 | 2021-06-30 | Inertial lock for hard disk magnetic head driver |
Country Status (1)
| Country | Link |
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| CN (1) | CN113284519B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07122007A (en) * | 1993-10-20 | 1995-05-12 | Fujitsu Ltd | Magnetic disk device |
| US5448436A (en) * | 1994-03-14 | 1995-09-05 | International Business Machines Corporation | Disk drive with shock-resistant rotary actuator |
| WO1997042627A1 (en) * | 1996-05-07 | 1997-11-13 | Quantum Corporation | Air actuated latching mechanism rotationally resistant to rotational shock force |
| CN1174624A (en) * | 1995-11-14 | 1998-02-25 | 昆腾公司 | Pressure differential latch for disk drive |
| JPH10302418A (en) * | 1997-04-30 | 1998-11-13 | Internatl Business Mach Corp <Ibm> | Inertia latch mechanism, actuator lock mechanism and disk drive device |
| JPH1116303A (en) * | 1997-06-26 | 1999-01-22 | Internatl Business Mach Corp <Ibm> | Actuator rocking mechanism and method |
| US5870256A (en) * | 1997-09-11 | 1999-02-09 | International Business Machines Corporation | Tandem inertia lock disk drive |
| US20030147179A1 (en) * | 2002-02-01 | 2003-08-07 | International Business Machines Corporation | Disk drive device, actuator lock mechanism, inertia latch mechanism and inertia lever |
| CN1681038A (en) * | 2003-10-16 | 2005-10-12 | 南方汇通微硬盘科技有限公司 | Disk drive inertial latch |
| JP2008034074A (en) * | 2006-07-28 | 2008-02-14 | Newton Co Ltd | Inertial latch for hard disk device |
| US8569670B1 (en) * | 2008-12-10 | 2013-10-29 | The United States Of America As Represented By The Secretary Of The Army | Pressure activated inertially locking base for projectiles |
-
2021
- 2021-06-30 CN CN202110742179.8A patent/CN113284519B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07122007A (en) * | 1993-10-20 | 1995-05-12 | Fujitsu Ltd | Magnetic disk device |
| US5448436A (en) * | 1994-03-14 | 1995-09-05 | International Business Machines Corporation | Disk drive with shock-resistant rotary actuator |
| CN1146045A (en) * | 1994-03-14 | 1997-03-26 | 国际商业机器公司 | Disk drive with shock-resistant rotary actuator |
| CN1174624A (en) * | 1995-11-14 | 1998-02-25 | 昆腾公司 | Pressure differential latch for disk drive |
| WO1997042627A1 (en) * | 1996-05-07 | 1997-11-13 | Quantum Corporation | Air actuated latching mechanism rotationally resistant to rotational shock force |
| CN1195415A (en) * | 1996-05-07 | 1998-10-07 | 昆腾公司 | Air actuated latching mechanism rotationally resistant to rotational shock force |
| JPH10302418A (en) * | 1997-04-30 | 1998-11-13 | Internatl Business Mach Corp <Ibm> | Inertia latch mechanism, actuator lock mechanism and disk drive device |
| JPH1116303A (en) * | 1997-06-26 | 1999-01-22 | Internatl Business Mach Corp <Ibm> | Actuator rocking mechanism and method |
| US5870256A (en) * | 1997-09-11 | 1999-02-09 | International Business Machines Corporation | Tandem inertia lock disk drive |
| US20030147179A1 (en) * | 2002-02-01 | 2003-08-07 | International Business Machines Corporation | Disk drive device, actuator lock mechanism, inertia latch mechanism and inertia lever |
| CN1681038A (en) * | 2003-10-16 | 2005-10-12 | 南方汇通微硬盘科技有限公司 | Disk drive inertial latch |
| JP2008034074A (en) * | 2006-07-28 | 2008-02-14 | Newton Co Ltd | Inertial latch for hard disk device |
| US8569670B1 (en) * | 2008-12-10 | 2013-10-29 | The United States Of America As Represented By The Secretary Of The Army | Pressure activated inertially locking base for projectiles |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113284519B (en) | 2023-01-06 |
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