WO1987003996A1 - Magnetic recording/regenerating apparatus - Google Patents
Magnetic recording/regenerating apparatus Download PDFInfo
- Publication number
- WO1987003996A1 WO1987003996A1 PCT/JP1986/000638 JP8600638W WO8703996A1 WO 1987003996 A1 WO1987003996 A1 WO 1987003996A1 JP 8600638 W JP8600638 W JP 8600638W WO 8703996 A1 WO8703996 A1 WO 8703996A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic
- hub
- spindle
- magnetic recording
- magnetic disk
- Prior art date
Links
- 230000001172 regenerating effect Effects 0.000 title abstract 2
- 239000000696 magnetic material Substances 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 description 19
- 238000003825 pressing Methods 0.000 description 10
- 230000005415 magnetization Effects 0.000 description 6
- 230000002411 adverse Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 101000606504 Drosophila melanogaster Tyrosine-protein kinase-like otk Proteins 0.000 description 1
- 241000365015 Protomelas taeniolatus Species 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/50—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges
- G11B23/505—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges of disk carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/022—Positioning or locking of single discs
- G11B17/028—Positioning or locking of single discs of discs rotating during transducing operation
- G11B17/03—Positioning or locking of single discs of discs rotating during transducing operation in containers or trays
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
- G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/0014—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form
- G11B23/0021—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form discs
- G11B23/0028—Details
- G11B23/0035—Details means incorporated in the disc, e.g. hub, to enable its guiding, loading or driving
-
- 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
- G11B5/4806—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 specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
Definitions
- the present invention relates to a magnetic recording / reproducing apparatus g having a media hub made of a magnetic material.
- the conventional magnetic recording / reproducing apparatus disclosed in U.S. Pat. No. 4,445,157 has a spindle hub 14 and a spindle hub 14 of a motor 13 as shown in FIG. 7 is attached directly, and the disk hub 2 with the magnetic disk 1 planted inside the disk cartridge 3 is brought into contact with the magnetic attraction force, and the guide hole 6 2 is 4 is positioned as a guide for the magnetic disk in the radial direction.
- the drive bin 21 for driving the magnetic disk 1 is located outside the guide position S in the radial direction. Umenari was on the diameter side.
- the motor spindle is used to guide the magnetic disk in the radial direction, so that the tip has a spherical surface to facilitate insertion.
- the diameter of the motor spindle is increased in order to secure strength and positioning accuracy, it is necessary to secure a sufficient clearance for the motor, which hinders miniaturization.
- the drive bin is formed in the outer diameter of the motor spindle, miniaturization of the media hub and the spindle hub has been difficult. Therefore, the magnetic disk is supported by a wide surface ridge,
- the * development solves such a problem, and its purpose is to provide a magnetic recording / reproducing apparatus that has reduced the size of the spin hap unit and the media hub unit and has enabled good head contact. Where you do it. Disclosure of the invention
- the present invention relates to a magnetic recording / reproducing apparatus using a magnetic disk having a media hub made of a magnetic material, wherein the position of the magnetic disk in the thickness direction is determined.
- a spindle hub having an upper surface that is formed integrally with the media hub; and a center core having an inner surface portion formed integrally with the media hub and in contact with a side surface of the spindle hub to position the magnetic disk in a radial direction.
- the spindle hub is provided on the spindle hub, and is provided on the inner diameter side with respect to the inner surface of the center core, and a drive bin for quickly connecting the spindle hub and the media hub.
- FIG. 1 is a sectional view of an embodiment of the magnetic recording / reproducing apparatus of the present invention.
- FIG. 2 is a sectional view of a conventional magnetic recording / reproducing apparatus.
- FIG. 3 is a top view of a magnetic recording / reproducing apparatus according to an embodiment of the present invention.
- FIG. 4 is a bottom view of the embodiment of the magnetic recording / reproducing apparatus of the present invention.
- FIG. 5 is a perspective view showing a horizontal structure of a magnetic disk used in the magnetic recording / reproducing apparatus of the present invention.
- FIG. 6 is a sectional view showing an engagement state between a media hub and a spindle hub in the embodiment of the magnetic recording / reproducing apparatus of the present invention.
- FIG. 7 is a plan view of Fig. 6.
- FIG. 8 is another cross-sectional view of the magnetic recording / reproducing apparatus of the invention (*).
- FIG. 9 is an explanatory view showing the operation of the magnetic recording / reproducing apparatus of the present invention.
- FIG. 11 is a cross-sectional view showing another embodiment of the magnetic recording / reproducing apparatus of the last generation
- FIG. 13 is a bottom view showing rubber of a media hub portion of the magnetic recording / reproducing apparatus of the present invention
- FIG. 12 is a cross-sectional view of FIG.
- FIG. 14 is a plan view of the upper gear lid in the embodiment of the magnetic recording / reproducing apparatus of the present invention.
- FIG. 15 is a side view of FIG.
- FIG. 16 is a plan view of a lower gimbal portion of the magnetic recording and reproducing apparatus according to the present invention.
- FIG. 17 is a side view of FIG.
- FIG. 18 and FIG. 19 are explanatory diagrams showing the effects of a magnetic recording / reproducing apparatus according to the present invention in a practical example.
- FIG. 20 is a bottom view of another embodiment of the magnetic recording / reproducing apparatus of the present invention.
- FIG. 21 is a cross-sectional view of another embodiment of the magnetic recording / reproducing apparatus of the present invention.
- FIG. 22 is a cross-sectional view of another embodiment of the magnetic recording / reproducing apparatus of the present invention.
- Fig. 23 is an explanatory diagram showing the magnetized state of the thrust magnet in Fig. 22, showing the best mode for carrying out the power generation.
- FIG. 1 is a cross-sectional view of an embodiment of a magnetic recording / reproducing apparatus according to the present invention
- FIG. 9 is an explanatory view of the magnetic recording / reproducing apparatus.
- 1 Media hub made of a magnetic material for mounting with magnetic force of 8
- 3 is a disk cartridge for storing magnetic disks 1 etc.
- 4 is a disk cartridge
- a center core for positioning the media happle in the radial direction with respect to the bin hub 17
- 5a an upper cleaning plate for pressing a liner for removing the surface of the magnetic disk 1
- 5b is the upper cleaning plate and the lower cleaning plate in contact with the magnetic disk 1 such as 5a, and the lower cleaning plate is in contact with the plate positioning part 47.
- 11 is the disk cartridge.
- Holder, 12 is a pressurized contact that is attached to the presser spring 52 and presses the upper cleaning plate, 13 is a belt 16, motor pulley 15, and motor spindle 14.
- the spindle motor which drives the spindle hub via the spindle 19, is mounted on the spindle hub and gives elastic force to push up the drive bin 21 movable in the direction of the spindle 25.
- 10 is a drive pin spring
- 20 is a spring retainer for fixing the ffi movement pin spring
- 23 is a magnetic material integrally or separately fixed to the housing 2
- a thrust magnet mounted inside the spindle hub.
- 26 is a bearing that freely supports the spindle 25 mated with the spindle hub 17 for rotation and movement in the ⁇ direction
- 27 is a housing
- An adjustment screw that engages with 2 4 with a screw thread and adjusts the position of the spindle in the ⁇ direction.
- 4 2 is a slide ⁇ ⁇ ⁇ that slides the magnetic head.
- Reference numeral 43 denotes a pressure spring for pressing the slide shaft 42
- reference numeral 44 denotes a spring fixing screw for fixing the pressure spring 43.
- the magnetic disk 1 is mounted on the spindle hub 17, for example, when the adjusting screw 27 is lowered, the magnetic disk 1 is also lowered.
- Fig. 5 is a perspective view showing the structure of a magnetic disk used for the magnetic recording / reproducing apparatus of the present invention
- 1 is a film-shaped magnetic disk with a magnetic material attached to the surface
- 2 is a film-shaped magnetic disk with a magnetic material attached to the surface
- No. 25 uses magnetic force to mount magnetic disk 1 on the spindle hub of the magnetic recording / reproducing device.
- Media hub 4 made of a magnetic material 4 is a center core
- 5a is a cleaning plate that presses a liner 6a that removes dust from the surface of the magnetic disk 1, and sandwiches the magnetic disk.
- a liner 5b and a cleaning plate 6b are formed below
- 7 is an erasure prevention switch for preventing erasure
- 8 is to protect the surface of the air disk 1.
- the shutter 9a is a guide hole for positioning the disk cartridge in the magnetic recording / reproducing apparatus, and another guide hole 9b is provided at a symmetric position.
- Reference numeral 10 denotes a positioning hole that destroys the magnetic disk 1 and the media hub 2 and generates a force that presses the center core against the spindle core.
- 3a is an upper disk cartridge
- 3b is a lower disk cartridge
- a magnetic disk 1 or the like is inserted and integrated to form a disk cartridge.
- Fig. 13 is a bottom view illustrating the center part of the disc body in the embodiment of the present invention, where 1 is a magnetic disk, 2 is a magnetic disk 1 attached, and the magnetic force is applied.
- Numeral 57 denotes a positioning hole for positioning and driving the media hub 2, and is located approximately from the center 18a of the magnetic disk rotation with respect to the center line 58 of the positioning surfaces 4a and 4b. It has a straight portion 57a in the direction of 90 '.
- the positioning hole 57 has the linear part 57a, the shape of other parts is arbitrary.
- reference numeral 1 denotes an arrow indicating the rotating direction of the disk.
- Fig. 12 is a cross-sectional view of Fig. 13 showing the magnetic disk 1 and media cartridge.
- a thin layer 59 such as an adhesive or a double-sided adhesive tape
- the center core 4 is attached to the media hub 2 by artsert or adhesive. Is made of a magnetic material, is attracted to the spindle hub by magnetic force, and the attached surface of the magnetic disk 1 is a height reference surface 2a which comes into contact with the spindle hap.
- FIG. 6 is a cross-sectional view showing a cross-sectional engagement state between a media hub and a spindle hub in an embodiment of the magnetic recording / reproducing apparatus g of the present invention
- FIG. 7 is a plan view.
- 2 1 is a drive bin that is movable up and down on the spindle hub and is positioned inside the media hub 2.
- the drive bin engages with the linear portion 5 7 of the hole 10 to drive the position, and 19 is the drive bin 21 upward.
- the drive bin spring pressurizes the drive bin spring
- 20 is a spring retainer that fixes the drive bin spring 19 to the spindle hub
- 2 a is the height reference surface that contacts the upper surface of the spindle hub
- 60 is the drive pin 2 1 and a relief part to prevent a change in abutment height due to fenders on the height reference plane 2 a due to the diligence of the media hub 2.
- 4 is a seter core and a positioning surface 4 a, Wedge-shaped engagement of spindle hub 17 with 4b determines lateral positioning.
- 6 1 has a magnetic disk
- Cut part provided to facilitate engagement between spindle hub 17 and center core 4 when mounted. It should be noted that the size of the escape portion and the cut portion is not limited to the * actual example, but may be configured only in a certain portion.
- the drive bin 21 is pressed against the height reference plane 2a when the magnetic disk is mounted, as shown by the dashed line, and is elastically deformed by the drive bin spring.
- the length from the media hub to the tip of the drive bin projecting upward is small because the diameter is small, and the clearance is small. Therefore, the thickness can be easily reduced.
- the pushing force of the drive bin spring 19 needs to be 3 g or more due to the friction force with the spindle hub 17 and gravity, and if it is insufficient, a sufficient ascending speed cannot be obtained with respect to the sliding speed, and Before it is pressed again and cannot be engaged.
- the drive bin 21 must have a diameter of at least 0.4 mm in strength when driving a magnetic disk having a diameter of 2.:! To 2.9 inches, and a diameter of 2 mm or more. With a diameter of, it becomes meaningless as it becomes larger overall.
- the spindle hub 17 is used as a reference for determining the height and one of the positions, and the larger the diameter is, the larger the contact area between the positioning surfaces 4a and 4b is.
- the smaller the diameter the better. Therefore, it is appropriate to set the diameter of the saddle hub 17 to 10.5 to 11.5 mm.
- the magnetic attraction of the magnet 18 can be used to push down the drive bin as well as to fit the magnetic disk and lower the drive bin even when the height of the magnetic head 'or the cleaning plate and the spindle hub are different. g is required.
- the maximum value of the attraction force is restricted as follows when a magnetic disk having a diameter of 2.1 to 2.9 inches is used.
- the slip torque 1 until the spindle hub 17 and the media hub 2 are positioned is RH
- the frictional coefficient is ⁇ «
- the magnet 1 is the equivalent contact radius of the spindle hub 17 and the media hub 2.
- A RHXFHX ⁇ H
- the slip torque due to the magnetic head B New paper And the liner are pressed against the magnetic disk by the cleaning plate, and the slip torque C is expressed by RD as the equivalent working radius of the magnetic disk and the magnetic head
- j D the pressing force is FD
- the equivalent contact radius of the magnetic disk and the liner under the cleaning plate is RP
- the friction coefficient ⁇ P
- the force applied to the pressure contact is FP.
- B BDXFDX ⁇ D
- C RPXFPX-P.
- a ⁇ B + C must be satisfied for the media hub and spindle hub to slide and the drive pin to slide.
- the magnetic disk is positioned on the upper surface and the side surface of the spindle hub, and the side guide portion is provided. By providing a driving pin on the inner diameter side, the guide on the side surface of the rear side can be reduced in size without being affected by the diameter of the spindle.
- Fig. 14 is a plan view of one embodiment of the upper carriage body
- Fig. 15 is a side view
- 34a is the upper magnetic head
- 35a is the head
- core 33 Is the upper carriage
- 33a is the upper magnetic head 34a so that it can be elastically deformed as indicated by the dashed line.
- the upper gimbal part, 39 is for fixing the upper carriage 33.
- 40 is a suspension that elastically supports the upper carriage
- 41 is a spring that applies a pressing force to the magnetic head
- 36a and 36b are deformed except for required parts
- the sabotter 36c for preventing the rotation is a pivot that supports the upper magnetic head 'at a point and prevents the upper and lower positions even though the rotation as shown by the dashed line is permitted.
- FIG. 16 is a plan view showing an embodiment of the lower magnetic head portion
- FIG. 17 is a side view showing the lower magnetic head portion
- 34 b is a lower magnetic head
- 35 b is a head core.
- Reference numeral 48 denotes a lower gimbal
- reference numeral 48a denotes a rim
- the lower magnetic head can be displaced like a dashed line.
- FIGS. 18 and 19 are explanatory diagrams showing the effect of adjusting the height of the spindle hub in the implementation of the magnetic recording / reproducing apparatus of the invention.
- FIG. 18 is a diagram before adjustment of the spindle hub. Fig.
- 19 shows the state after adjustment.
- 1 is a magnetic disk
- 2 is a media hub
- 5a and 5b are cleaning plates
- 6a and 6b are the surfaces of the magnetic disk 1 which are pressed by the cleaning plates 5a and 5b.
- Liner for dust removal 33a is the upper gimbal part
- 63 is the fixed lower gimbal with immovable magnetic head
- 34a is the upper magnetic head
- 34b is the lower magnetic head.
- the height of the cleaning hubs 5a and 5b, the media hub 2 attached to the spindle hub, and the lower magnetic head are fixed, and only the upper magnetic head is movable. If the heights are different, the surface created by the media hub 2, the surface created by the cleaning plates 5a and 5b, and the surface created by the lower magnetic head 34b are different from each other.
- the pressing force FP of the cleaning plates 5a and 5b and the pressing force FD of the magnetic head 'must be increased, and the magnetic disk must be bent to make contact. Nevertheless, the lower magnetic head 34b may be slightly displaced by a small amount g as shown in FIG. Was giving.
- Fig. 19 is an explanatory view when the position of the media hub 2 is lowered in Fig. 18, and the surface formed by the cleaning plates 5 a and 5 b and the media hub 2 are formed.
- the upper magnetic head 34a and the lower magnetic head 34b fit into the magnetic disk 1 and have a good head contact.
- the gap between the media hub and the magnetic head is long, and the magnetic disk acts seemingly soft, so that a more favorable head counter is achieved. A cut is obtained.
- the cleaning plates 5 a and 5 b are #: and the case where the lower gimbal 48 is movable is described, but the fixed lower gimbal 6 3 which does not move in place of the lower gimbal 48 is described. Even so, a good head contact can be obtained, and even if there is no cleaning plate 5a or 5b, the area of regulation is reduced, so a good head contact is obtained. Contact is obtained.
- FIG. 3 shows: *: a top view of the embodiment of the magnetic recording / reproducing apparatus according to the invention
- FIG. 4 is a bottom view
- arrow r indicates the rotation direction of the magnetic disk 1
- arrow S indicates the lower gear lid 32
- 28 is a stepping motor 29 that seeks the rack 45 composed of the lower carriage 32 with the binion 30, and 29 is a stepping motor 2.
- FIG. 8 is another cross-sectional view of the embodiment of the magnetic recording / reproducing apparatus according to the present invention, which shows a stepping motor 28, a view 30, a rack 45, and a positioning pin 46a, 4 6b, upper magnetic head 34a, lower magnetic head 34b, upper carriage The relationship between di 33 and lower carriage 32 is shown.
- the positioning bins 46a and 6b are engaged with the guide holes 9a and 9b via the holder bin holes 51a and 51b, and are pressed by the contacts 11 and 11b to be positioned. Yes,
- FIG. 10 is an exploded perspective view of an embodiment of the magnetic recording / reproducing apparatus of the present invention.
- the holder 11 includes a pressing spring portion 52 having a pressing contact 12 separately or integrally and a disk card. Place the trigger 3 on the positioning bins 46a, 46b, spacers 49a, 49b, and holder holding springs 53a, 53b on the housing 24.
- FIG. 11 is a sectional view showing another embodiment of the magnetic recording / reproducing apparatus of the present invention, in which a thrust spring 5 is mounted between a roller bearing 56 and a spindle hub 17.
- the spindle 25 engaged with the spindle hub 17 is raised, while a thread 58 is formed at the other end, and is positioned by the preload nut 55.
- Thrust spring 54 The shape of the spring is abrupt, and a part of it is formed as a cantilevered spring portion 54a to protrude to serve as a drive bin spring and to provide a rolling bearing. It also serves as a preload.
- FIG. 20 is a bottom view of another embodiment of the magnetic recording / reproducing apparatus of the present invention.
- Carriage 32 and the like are driven by lead screw 31.
- lower carriage 32 and the like are hard to move against external force, It has the advantage of being difficult to offtrack.
- FIG. 21 is a cross-sectional view of another embodiment of the magnetic recording / reproducing apparatus of the present invention. Attached. According to such a method, it is not necessary to form a screw portion in the housing 24, so that space can be saved.
- FIG. 22 is a cross-sectional view of another embodiment of the magnetic recording / reproducing apparatus of * Kiyoshi
- FIG. 23 is an explanatory view of a thrust magnet part.
- Reference numeral 2 denotes a thrust magnet for attracting the thrust yoke 23 attached to the housing 24 to the thrust yoke 23 by magnetic attraction with the spindle hub 17 having the magnetic disk 1 attached thereto.
- 6 5 is a main magnetized pattern for generating magnetic attraction
- 6 6 is a main magnetized magnet for detecting the rotational speed of the spindle hub 17 containing the thrust magnet 22.
- the FG magnetization pattern 67 formed as a part of the pattern is a magnetic detector that detects the magnetic flux leaking from the FG magnetization pattern 66 to detect the rotation speed.
- the boundary between the magnetization of the N pole and the S pole is indicated by a broken line.
- the FG magnetization pattern 66 is formed as a part of the main magnetization pattern 65, the magnetic attraction force has almost no influence on the magnetic attraction force, and the magnetic detection element 67 is used for scanning. Since the number of rotations of the pindle hap 17 can be detected and integrated, it is easy to reduce the size and cost.
- the magnetic detector is also a Hall element, a magnetic resistance element, a coil, and the like. Various detection elements can be used.
- the embodiments and the operation of the magnetic recording / reproducing apparatus of the present invention have been described above.
- the intention of the present invention is to make the spindle unit formed separately from the spindle motor movably in the ⁇ direction. Therefore, the embodiment is not limited to the contents described in the present embodiment, and the application is not limited to the magnetic recording / reproducing apparatus.
- the positioning of the magnetic disk in the radial direction is performed on the side surface of the spindle hub, and the inner diameter side of the portion where the drive pin is positioned is positioned.
- the media section and spindle hub section can be made smaller, which not only achieves both high capacity and good head contact, but also the size of the magnetic recording / reproducing device S can be reduced. Is overwhelming.
Landscapes
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019870700774A KR880701001A (ko) | 1985-12-25 | 1987-08-25 | 자기 기록 재생장치 |
Applications Claiming Priority (16)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60/201605U | 1985-12-25 | ||
JP20160585U JPS62110752U (ja) | 1985-12-25 | 1985-12-25 | |
JP61/261U | 1986-01-06 | ||
JP26186U JPS62113449U (ja) | 1986-01-06 | 1986-01-06 | |
JP61101359A JPS62257664A (ja) | 1986-05-01 | 1986-05-01 | フロツピ−デイスク駆動装置 |
JP61101360A JPS62257662A (ja) | 1986-05-01 | 1986-05-01 | デイスク駆動装置 |
JP61/101360 | 1986-05-01 | ||
JP61/101359 | 1986-05-01 | ||
JP61/73569U | 1986-05-16 | ||
JP1986073569U JPH0516683Y2 (ja) | 1986-05-16 | 1986-05-16 | |
JP61/74747U | 1986-05-19 | ||
JP7474786U JPS62187461U (ja) | 1986-05-19 | 1986-05-19 | |
JP13095486U JPS6336951U (ja) | 1986-08-27 | 1986-08-27 | |
JP61200303A JP2615563B2 (ja) | 1986-08-27 | 1986-08-27 | 磁気記録再生装置 |
JP61/130954U | 1986-08-27 | ||
JP61/200303 | 1986-08-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1987003996A1 true WO1987003996A1 (en) | 1987-07-02 |
Family
ID=27571398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1986/000638 WO1987003996A1 (en) | 1985-12-25 | 1986-12-17 | Magnetic recording/regenerating apparatus |
Country Status (4)
Country | Link |
---|---|
US (1) | US4864442A (ja) |
EP (1) | EP0252984A1 (ja) |
KR (1) | KR880701001A (ja) |
WO (1) | WO1987003996A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2595784B2 (ja) * | 1990-07-30 | 1997-04-02 | 松下電器産業株式会社 | ディスクの回転駆動装置 |
JP5151268B2 (ja) * | 2007-06-25 | 2013-02-27 | 日本電産株式会社 | モータおよびディスク駆動装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5894187U (ja) * | 1981-12-16 | 1983-06-25 | ソニー株式会社 | 回転デイスク装置 |
JPS5843099Y2 (ja) * | 1979-04-16 | 1983-09-29 | 凸版印刷株式会社 | カセツトデイスク |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5826771U (ja) * | 1981-08-10 | 1983-02-21 | ソニー株式会社 | 記録再生装置におけるカセツト排出機構 |
-
1986
- 1986-12-17 EP EP87900268A patent/EP0252984A1/en not_active Withdrawn
- 1986-12-17 WO PCT/JP1986/000638 patent/WO1987003996A1/ja not_active Application Discontinuation
-
1987
- 1987-08-20 US US07/092,912 patent/US4864442A/en not_active Expired - Lifetime
- 1987-08-25 KR KR1019870700774A patent/KR880701001A/ko not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5843099Y2 (ja) * | 1979-04-16 | 1983-09-29 | 凸版印刷株式会社 | カセツトデイスク |
JPS5894187U (ja) * | 1981-12-16 | 1983-06-25 | ソニー株式会社 | 回転デイスク装置 |
Also Published As
Publication number | Publication date |
---|---|
KR880701001A (ko) | 1988-04-13 |
EP0252984A1 (en) | 1988-01-20 |
US4864442A (en) | 1989-09-05 |
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