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31. 发明专利

JPS61217966A POSITIONING MECHANISM FOR MAGNETIC HEAD 失效
公开(公告)号：JPS61217966A
公开(公告)日：1986-09-27
申请号：JP5859585
申请日：1985-03-25
申请人： HITACHI LTD
发明人： SEGA MASAHIKO , SUZUKI TOMIO , EBIHARA SUSUMU , MORIYAMA KANICHI , TAKAHASHI TAKESHI
IPC分类号： G11B21/02 , G11B5/55
摘要： PURPOSE:To improve exactly vibration characteristics, and to make the titled mechanism small in size and light in weight by forming a wall-removed part on the upper end part of a support of a housing. CONSTITUTION:A magnetic circuit part 5 consists of a coil 51 which has been attached to the other end side of an oscillating body supporting part 22, and a magnetic circuit 52 which has been fixed to a bottom plate 43 of a housing 4 and placed in the peripheral direction of the coil 51. In this state, a magnetic action is generated the magnetic circuit 52 and the coil 51, therefore, an oscillating body 2 is turned around a shaft with respect to a housing 4, and a magnetic head 1 is positioned at a desired position of a magnetic disk. On the upper end of a support 41 of the housing 4, a wall-removed part 44 is formed, and the wall-removed part 44 forms a recessed part which has removed the upper part of the support along the axial direction and also with a moderate depth, for instance, it is formed in one support 41. As for the wall-removed part 44, it is feared that the rigidity of the support 41 drops by forming it, but this mechanism is constituted so that the drop of its rigidity is suppressed as much as possible, and the mass can be lowered concentrically.

32. 发明专利

JPS6182385A Automatic lock mechanism of carriage 失效
标题翻译：运输自动锁定机构
公开(公告)号：JPS6182385A
公开(公告)日：1986-04-25
申请号：JP20532084
申请日：1984-09-29
申请人： Hitachi Ltd
发明人： MORIYAMA KANICHI , TAKAHASHI TAKESHI , SUZUKI TOMIO , EBIHARA SUSUMU , OTSUKA MASAKI
IPC分类号： G11B21/02 , G11B21/22
CPC分类号： G11B21/22
摘要： PURPOSE:To fix a movable carriage automatically and firmly by employing a fixing mechanism having a slow action and mounting a magnetic head. CONSTITUTION:When a magnetic disk device, etc., are brought into the stopped state, a carriage 10 rotates due to the torsion force of a retract spring 15 and a magnetic head 1 moves to the retract position on the magnetic disk. An electromagnetic solenoid 11 having a dushpot mechanism, etc., acts slowly, and an ascending plunger 11a fits in a notch part 16 of the carriage 10 at the retrack position to fix the carriage firmly. Accordingly the disk can be prevented from breakage by the head 1 during transportation, etc.
摘要翻译：目的：通过采用缓慢作用的固定机构和安装磁头来自动而牢固地固定可移动的托架。构成：当磁盘装置等进入停止状态时，托架10由于缩回弹簧15的扭力而旋转，磁头1移动到磁盘上的缩回位置。具有漏斗机构等的电磁螺线管11缓慢地起作用，并且上升的柱塞11a在后退位置装配在滑架10的切口部分16中，以牢固地固定托架。因此，可以防止盘在运输等期间被头部1破损。

33. 发明专利

JPS59165272A Positioning mechanism of magnetic head 失效
标题翻译：磁头定位机制
公开(公告)号：JPS59165272A
公开(公告)日：1984-09-18
申请号：JP3735083
申请日：1983-03-09
申请人： Hitachi Ltd
发明人： MORIYAMA KANICHI , TAKAHASHI TAKESHI , SUZUKI TOMIO , EBIHARA SUSUMU , OOTSUKA MASAKI
IPC分类号： G11B21/24 , G11B5/48 , G11B21/02
CPC分类号： G11B5/48
摘要： PURPOSE:To adjust the attachment height of a magnetic head with high precision by a simple procedure and to improve the precision of the relative height between a magnetic disk and the magnetic head by providing a stopper which is settable at an optional position. CONSTITUTION:The magnetic head 2 is fitted to a support 4 through a head arm 3, and the support 4 oscillates around a fixed shaft 6 to position the magnetic head 2. The support 4 is supported on the fixed shaft 6 through two bearings 5a and 5b, and when the internal ring in the lower bearing 5b is energized axially by a pressurized spring 7, the whole of the support 4 moves up to press the internal ring in the upper bearing 5a against a bush 9 fitted in the fixed shaft 6. The fixed shaft 6 is thread-cut partially to form a bolt part 12, where a nut 11 is engaged. The bush 9 is slidable axially until the nut 11 as a stopper and the nut 11 is rotated to vary the axial fixation position of the bush 9 optionally, so the support 4, i.e. magnetic head 2 is positioned optionally in the height direction.
摘要翻译：目的：通过简单的程序高精度地调节磁头的安装高度，并通过提供可在可选位置设置的挡块来提高磁盘与磁头之间的相对高度的精度。构成：磁头2通过头臂3装配到支撑件4上，并且支撑件4围绕固定轴6摆动以定位磁头2.支撑件4通过两个轴承5a支撑在固定轴6上， 5b，并且当下轴承5b的内环被加压弹簧7轴向通电时，整个支撑件4向上移动，将上轴承5a中的内环压靠在安装在固定轴6中的衬套9上。固定轴6被部分地切割以形成螺母部分12，螺母11接合在一起。衬套9可轴向滑动，直到螺母11为止动件，并且螺母11旋转以改变衬套9的轴向固定位置，任选地，因此支撑件4即磁头2可选地位于高度方向上。

34. 发明专利

JP2002349552A BEARING UNIT, SPINDLE MOTOR AND INFORMATION RECORD REPRODUCTION DEVICE 失效
公开(公告)号：JP2002349552A
公开(公告)日：2002-12-04
申请号：JP2001162612
申请日：2001-05-30
申请人： HITACHI LTD
发明人： MURANISHI MASARU , NISHIMURA YUJI , HONDA SHOHEI , SUZUKI TOMIO , ISHIKAWA MASATOSHI
IPC分类号： F16C17/10 , G11B19/20 , H02K5/167 , H02K7/08
摘要： PROBLEM TO BE SOLVED: To eliminate scattering and leakage of a lubricant in a herringbone bearing repeating starting and stopping or a spindle motor using this. SOLUTION: In the bearing unit having a shaft and a bearing 2, the shaft is relatively rotatable against the bearing 2 and the lubricant is filled between the shaft and the bearing 2. A pair of grooves in a direction crossing each other is formed on an opposed surface of the shaft or the bearing and the lubricant along the pair of grooves is balanced by a pumping action. An inhibition part F for inhibiting a flow of the lubricant is provided on a midway of the groove. In the bearing unit, the inhibition part F is an out of roundness constitution part formed with no groove.

35. 发明专利

JPH10293976A MAGNETIC DISK DEVICE 失效
公开(公告)号：JPH10293976A
公开(公告)日：1998-11-04
申请号：JP10134097
申请日：1997-04-18
申请人： HITACHI LTD
发明人： MIZUNO SEIICHI , MOCHIDA JIRO , SUZUKI TOMIO , NAKAMURA GENTARO , UNE TOKUKI
IPC分类号： G11B33/14 , G11B21/02
摘要： PROBLEM TO BE SOLVED: To provide a magnetic disk device capable of preventing the increase of gas concentration liberated from bearing lubricant therein by arranging activated carbons for absorbing gas components liberated from grease in the vicinity of a carriage bearing or providing an air flow passage utilizing a pressure difference in an HDA and also arranging activated carbons therein. SOLUTION: Through-holes 14 and 13 are provided in a bearing jacket 3, and through an activated carbon case 16, the air passage of a return port 20 is constructed from a return passage 19. Then, by arranging the return port 20 in the inner peripheral part of a disk 8, a pressure distribution in the HDA by disk rotating winds is smaller in its inner peripheral part compared with its outer peripheral part. Thus, gas liberated from the bearing lubricant is passed through a room where activated carbons 1 are arranged, returned into the HDA and the absorbing effect of the activated carbons 1 is increased. Also, by providing an air filter 21 in this passage, oil mist is effectively captured.

36. 发明专利

JPH09219070A ACTUATOR FOR MAGNETIC DISK DEVICE 失效
公开(公告)号：JPH09219070A
公开(公告)日：1997-08-19
申请号：JP2662696
申请日：1996-02-14
申请人： HITACHI LTD
发明人： SEGA MASAHIKO , SUZUKI TOMIO , TAKAHASHI TAKESHI , MATSUKI TAKASHI , OKADA RYOJI , YOSHIMURA YASUHIRO
IPC分类号： G11B21/02
摘要： PROBLEM TO BE SOLVED: To thin a laminated height of an actuator and to thin a device by directly fixing a guide arm to a pivot sleeve, etc., with the C-ring shape part of the guide arm. SOLUTION: This actuator is structured so that a groove is formed on a coil holder 7 supported by the pivot sleeve 8 and with the shape surrounding the outer periphery of the pivot sleeve, and the C-ring shaped guide arm 6 is engaged with the groove. Further, the C-ring shape part is provided on the guide arm connected to a suspension 5, and is engaged with the groove on the outer peripheral surface of the sleeve 8. Thus, the actuator is fixed directly to the guide arm 6 and the pivot sleeve 8, and a clamping part is eliminated.

37. 发明专利

JPH09161418A RECORDER AND LOAD ARM 失效
公开(公告)号：JPH09161418A
公开(公告)日：1997-06-20
申请号：JP31509695
申请日：1995-12-04
申请人： HITACHI LTD
发明人： IKEDA YUTAKA , YOSHIDA SHINOBU , SEGA MASAHIKO , KODAIRA HIDEKAZU , SHIMIZU TOSHIHIKO , SUZUKI TOMIO
IPC分类号： G11B21/21 , G11B21/02 , G11B21/12
摘要： PROBLEM TO BE SOLVED: To improve the impact resistance and the resistance to vibration by providing a load/unload mechanism for always keeping a disc in no contact with a slider to avoid damage or the like of the slider and the disk caused by adhesion, sliding or contact between the slider and disc. SOLUTION: In a magnetic disk device, a disc rotation mechanism 200, a positioning actuator 201 and a load/unload mechanism 8 are arranged on a base 2. In the mechanism 200, a disk 1 is laminated on a spindle motor mounted on the base 2 at a certain interval and fixed on a spindle motor rotation part by a disk keeper 3 and rotates at a high speed with the rotation of the motor. When a current flows through a coil on the opposite side of a load arm 5 with respect to a rotating shaft, a carriage 4 makes an oscillatory motion centered on a pivot by a magnetic field of a magnet 10 to accomplish a positioning operation for reading or writing information. As an actuator oscillates from a load state and moves within the disk, a hook 6 on an arm 5 glides down from a member 8 to keep the slider 7 floating.

38. 发明专利

JPH09115235A MAGNETIC DISK DEVICE AND ITS MANUFACTURE 失效
公开(公告)号：JPH09115235A
公开(公告)日：1997-05-02
申请号：JP27088595
申请日：1995-10-19
申请人： HITACHI LTD
发明人： YOSHIMURA YASUHIRO , OKADA RYOJI , SEGA MASAHIKO , SUZUKI TOMIO , MATSUKI TAKASHI
IPC分类号： G11B21/02 , G11B17/038 , G11B19/20 , G11B33/12
摘要： PROBLEM TO BE SOLVED: To provide a handy and thin type magnetic disk device by making the packaging structure of magnetic disks and a guide arm of the device thinner. SOLUTION: The 1st magnetic disk 2, a spacer ring 11 and the 2nd magnetic disk 2 are layered in order and mounted on a rib 13 formed integrally with a spindle hub 3. A clamp ring 12 consisting of a material to cause a plastic flow is installed in a gap between the 2nd magnetic disk 2 and the spindle hub 3, and is pressurized from the upper part to plastically deformed, so that the clamp ring 12 tightly adheres to the magnetic disks 2 and the spindle hub 3 to fix up the magnetic disks.

39. 发明专利

JPH09115233A PLATE-LIKE MEMBER HOLDING MEANS ON SHAFT 失效
公开(公告)号：JPH09115233A
公开(公告)日：1997-05-02
申请号：JP26678395
申请日：1995-10-16
申请人： HITACHI LTD
发明人： KOBAYASHI ISAO , SEGA MASAHIKO , SUZUKI TOMIO , TAKAHASHI TAKESHI
IPC分类号： G11B21/02 , G11B17/038 , G11B19/20
摘要： PROBLEM TO BE SOLVED: To surely and high accurately hold plate-like members such as arms, etc., on a shaft while a layered body of the plate-like arms is made to be thinner. SOLUTION: A flange member B301 fitted to the 1st plate-like member 201 to be supported is fitted into the inner surface of a hole provided in a holder 1. Then, a flange member A302 fitted to the 2nd plate-like member 202 to be supported is fitted into the inner surface of the flange member B301, and moreover, the shaft 4 is pushed into the inner surface of the flange member A302, so that the plate-like members 201 and 202 are held on the shaft.

40. 发明专利

JPH0963245A MAGNETIC DISK DEVICE 失效
公开(公告)号：JPH0963245A
公开(公告)日：1997-03-07
申请号：JP21636395
申请日：1995-08-24
申请人： HITACHI LTD
发明人： SEGA MASAHIKO , SUZUKI TOMIO , TAKAHASHI TAKESHI , MIHASHI HIROYUKI , YUKI TETSUO , MATSUKI TAKASHI
IPC分类号： G11B25/04 , G11B33/12
摘要： PROBLEM TO BE SOLVED: To provide a small-sized, thinned device with large capacity by separating a disk/actuator room from a package room, transmitting rotational force of a motor in a required space with a kinetic pressure bearing and providing thin sliders on surfaces/rears of plural disks while making them correspond to each other. SOLUTION: The disk/actuator room 25 housing two sheets, etc., of magnetic disks 2 and the actuator, etc., is arranged separated from the package room 26 housing a control package 22, etc. The rotational force of a spindle motor 9 provided in the space secured in the internal diameter of the disk 2 in the room 25 is transmitted to a spindle 91 through the kinetic pressure bearing 10. On the other hand, four pieces, etc., of thin nano-sliders 4 are set correspond to respective surfaces/rears of the disks 2, and respective sliders 4 turn around a shaft 93 by a suspension 5 controlled by a magnetic circuit 11. Further, the room 26 is connected to a PCMCIA connector. By such a constitution, the small-sized magnetic disk device having a thickness of 5mm or below and large capacity is obtained.

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