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1. 发明专利

JPS5792468A MAGNETIC DISK STORAGE DEVICE 失效
公开(公告)号：JPS5792468A
公开(公告)日：1982-06-09
申请号：JP16805480
申请日：1980-12-01
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NARUSE ATSUSHI , MOTOYOSHI KUNIHIRO , IIZUKA TAKASHI , KANEKO REIZOU , MITSUYA YASUNAGA
IPC分类号： G11B21/02 , G11B33/08
摘要： PURPOSE:To obtain stable characteristic by equipping a leaf spring which is equipped at one end to the voice coil motor of a linear actuator and also said spring equipped at the other end with a damping mass having constant mass, and holding a base elastically through a damper. CONSTITUTION:In a magnetic disk storage device, disks 4 fixed on a spindle 5 and a base 1 supporting a voice coil motor which drives a carriage 8 linearly are made independent of a main base 2 by a damper 3 in terms of vibration, and on the base 1, a damping mechanism 10 absorbing the vibration of the base 1 is mounted. The damping mechanism 10 is covered with a dust-free cover 40 and its hollow cylindrical damping mass 30a closed at one end is equipped on the base 1 with a screw 20 through a spring 10a; and this mass 30a is vertically movable with damping characteristics by the spring 10a and horizontally movable by a hole 31 having a much greater diameter than that of the screw 20.

2. 发明专利

JPS5794961A MAGNETIC DISK STORAGE DEVICE 失效
公开(公告)号：JPS5794961A
公开(公告)日：1982-06-12
申请号：JP16805680
申请日：1980-12-01
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NARUSE ATSUSHI , MOTOYOSHI KUNIHIRO , IIZUKA TAKASHI , KANEKO REIZOU , MITSUYA YASUNAGA
IPC分类号： G11B33/14 , G11B21/02 , G11B25/04 , G11B33/08
摘要： PURPOSE:To improve positioning precision by absorbing vibration, generated by an actuator, by a damping mechanism provided to a base or a carriage block. CONSTITUTION:A damping mass 30a is vertically movable with the damping characteristics of a spring 10a and horizontally movable by a hole 31 which has a much greater diameter than a screw 20. When a disk 4 being turned is seeked in a magnetic disk storage device, the generated vibration of a voice coil motor is absorbed by a damping mechanism 10 provided at the end part of a base 1. Namely, the damping masses 30a and 30b move being delayed behind the motion of a magnet 6 owing to inertial force to move forth and back, and left and right by frictional force and also to move up and down against spring force by being struck with certain weight.

3. 发明专利

JPS5792469A MAGNETIC DISK STORAGE DEVICE 失效
公开(公告)号：JPS5792469A
公开(公告)日：1982-06-09
申请号：JP16805580
申请日：1980-12-01
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NARUSE ATSUSHI , MOTOYOSHI KUNIHIRO , IIZUKA TAKASHI , KANEKO REIZOU , MITSUYA YASUNAGA
IPC分类号： G11B21/02 , G11B25/04 , G11B33/08
摘要： PURPOSE:To obtain stable characteristic by holding a base elastically through a damper while providing a damping mechanism which includes a dust-free cover and absorbs the vibration of the base over the carriage block of a rotary actuator. CONSTITUTION:In a magnetic disk storage device, disks 4 fixed on a spindle 5 and a base 1 supporting a voice coil motor which drives a carriage 8 linearly are made independent of a main base 2 by a damper 3 in terms of vibration. On the base 1, a damping mechanism 10 absorbing the vibration of the base 1 is mounted. The damping mechanism 10 is covered with a dust-free cover 40 and its hollow cylindrical damping mass 30a closed at one end is equipped on the base with a screw 20 through a spring 10a; and this mass 30a is vertically movable with damping characteristics by the spring 10a and horizontally movable by a hole 31 having a much greater diameter than that of the screw 20.

4. 发明专利

JPS56109926A STRUCTURE FOR HOLDING ROTARY SHAFT 失效
公开(公告)号：JPS56109926A
公开(公告)日：1981-08-31
申请号：JP879680
申请日：1980-01-30
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： HAYAKAWA TAKEO , MOTOYOSHI KUNIHIRO , MITSUYA YASUNAGA , OGUCHI SHIGEMITSU
IPC分类号： F16C35/077
摘要： PURPOSE:To miniaturize the apparatus in the structure for holding the rotary shaft vertically, by constituting a pushing means which pushes the rotary shaft at the two points separated by a specified angle on the outer periphery thereof by a spring which pushes said two points simultaneously and is formed as one body. CONSTITUTION:As the pushing means to push a bearing 2 of the rotary shaft 1 to the point E of a bearing box 14, a spring part 13 comprising a resilient material is provided. Said spring part 13 has an approximately circular structure whose tip parts are bent toward the inner diameter. The tip parts push the two points A and B separated by a specified angle on the outer periphery of the bearing 2 through holes 17 in said bearing box 14. The other end of the spring 13 is fixed to the point C of a base 20 by a fixing screw 16, thereby pushing the bearing 2 to the point E of the bearing box 14. In this case, if the point C of the base 20 is moved to the right or left, the force for pushing the bearing 2 to the point E can be varied concurrently with the points A and B.

5. 发明专利

JPS5794962A MAGNETIC DISK STORAGE DEVICE 失效
公开(公告)号：JPS5794962A
公开(公告)日：1982-06-12
申请号：JP16961780
申请日：1980-12-03
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NARUSE ATSUSHI , MOTOYOSHI KUNIHIRO , IIZUKA TAKASHI , KANEKO REIZOU , MITSUYA YASUNAGA
IPC分类号： G11B33/08 , G11B5/54 , G11B21/02 , G11B25/04
摘要： PURPOSE:To absorb vibration by an actuator by providing a dampling mechanism, consisting of more than one damping ball arranged in airtight space, on a voice coil motor. CONSTITUTION:Access to a disk device 4 is attained by applying electric power to a coil bobbin 7 and then driving a head arm 9 by a voice motor. At this time, vibration generated by a rotary actuator is absorbed through the movement of lead balls in a damping mechanism 10 provided on a carriage block 12, thus positioning a head with high precision.

6. 发明专利

JPS6020825B2 失效
公开(公告)号：JPS6020825B2
公开(公告)日：1985-05-23
申请号：JP9222777
申请日：1977-08-02
申请人： HITACHI LTD
发明人： MOTOYOSHI KUNIHIRO
IPC分类号： G11B21/02 , G11B5/54

7. 发明专利

JPS59171077A Magnetic head positioning mechanism 失效
标题翻译：磁头定位机制
公开(公告)号：JPS59171077A
公开(公告)日：1984-09-27
申请号：JP4416183
申请日：1983-03-18
申请人： Hitachi Ltd
发明人： OOTSUKA MASAKI , TAKAHASHI TAKESHI , MORIYAMA KANICHI , MOTOYOSHI KUNIHIRO , EBIHARA SUSUMU
IPC分类号： G05D3/00 , G11B5/48 , G11B21/02
CPC分类号： G11B5/48
摘要： PURPOSE:To prevent impact force or a mechanical vibration at the time of an access operation by sandwitching a VCM coil by both sides by VCM coil fixing plates, and adhering and clamping it with a screw in a head positioning mechanism. CONSTITUTION:In a state that VCM coil 3 is sandwitched from both sides by the VCM coil fixing plates 5a, 5b, and fixed by means of adhesion and screw- clamping, it is connected by screw-clamping to a head arm 2 loaded with a magnetic head 1. Therefore, it is possible to prevent the peeling-off of adhesion of the VCM coil and the VCM coil fixing plate, which is generated from impact force at the time of an access operation, or a drop of the adhesion strength due to the temperature rise of a coil. In this way, the reliability is raised, a mechanical vibration generated due to the drop of the adhesion strength is prevented, and the positioning accuracy is raised.
摘要翻译：目的：通过VCM线圈固定板对VCM线圈进行两侧切换，以防止冲击力或进入操作时的机械振动，并用螺钉固定在头部定位机构中。构成：在VCM线圈固定板5a，5b从VCM线圈固定板5a，5b两侧进行VCM线圈3的固定并通过粘接和螺旋夹紧固定的状态下，通过螺纹夹紧将其连接到装有磁头1.因此，可以防止由于在进入操作时由冲击力产生的VCM线圈和VCM线圈固定板的粘附力的剥离或粘合强度的下降到线圈的温度上升。以这种方式，提高了可靠性，防止了由于粘合强度的降低而产生的机械振动，并且定位精度提高。

8. 发明专利

JPS5994275A POSITIONING MECHANISM OF MAGNETIC HEAD 失效
公开(公告)号：JPS5994275A
公开(公告)日：1984-05-30
申请号：JP20362482
申请日：1982-11-22
申请人： HITACHI LTD
发明人： MORIYAMA KANICHI , TAKAHASHI TAKESHI , MOTOYOSHI KUNIHIRO , EBIHARA SUSUMU
IPC分类号： G11B21/02 , G11B5/55
摘要： PURPOSE:To eliminate a gap between a bearing and a fixed shaft and to prevent the inclination of a supporter of a magnetic head in order to ensure the positioning of magnetic head with high precision, by forming the fixed shaft so that it has contacts at >=3 points with the bearing of a rotor which supports the magnetic head. CONSTITUTION:A positioning mechanism works with application of current to a voice coil 4 of a voice coil motor to position a magnetic head 1 supported at the tip of a head arm 2 to a desired track on a magnetic disk 15. In this case, the positioning mechanism contains a fixed shaft 50 which supports rotatably a supporter 3 via a bearing 6a at three points 10, 13 and 14. As a result, the supporter 3 has the holding power to external force of any radius direction and can hold stably the head 1 owing to a composite function of external forces obtained at three points.

9. 发明专利

JPS54155020A LOADING OF MAGNETIC HEAD 失效
公开(公告)号：JPS54155020A
公开(公告)日：1979-12-06
申请号：JP6374078
申请日：1978-05-27
申请人： HITACHI LTD
发明人： NISHIDA HIROSHI , NAKAKOSHI KAZUO , NARUSE ATSUSHI , MOTOYOSHI KUNIHIRO , SHIONO TOSHIO
IPC分类号： G11B21/12 , G11B5/54
摘要： PURPOSE:To protect a recording medium from damage, by controlling the speed of a magnetic head depending on the condition of the loaded operation of the head in floppy disc storage. CONSTITUTION:A magnetic substance is coated on a flexible substrate, thereby producing a flexible disc. This disc is used as the magnetic recording medium. Usually, the recording medium 12 and the magnetic head 2 are separated at a prescribed distance from each other. When data are stored or read, the head is driven and pushed onto the medium 12. The driving speed of the head 2 has the highest value when the head is started. The driving speed is gradually reduced so that the speed is minimized when the head is pushed onto the recording medium 12.

10. 发明专利

JPH01206119A DUST-PROOF BEARING 失效
公开(公告)号：JPH01206119A
公开(公告)日：1989-08-18
申请号：JP3244288
申请日：1988-02-15
申请人： HITACHI LTD
发明人： MOTOYOSHI KUNIHIRO
IPC分类号： F16C33/80 , F16J15/44 , G11C21/02
摘要： PURPOSE:To enable a simple construction of reducing the amount of floating particulate generated from a dust-proof bearing itself consisting of a closing member which closes the bearing without a contact with the shaft of the bearing by adopting a labyrinth construction between the shaft and the closing member. CONSTITUTION:A sleeve 66 is formed integrally with the middle part of a closing member 66 through which a shaft 61 passes through, extending axially by the length l from the closing member 66, surrounding the entire surface of the shaft 61 with the specified clearance and having no contact with the shaft. The labyrinth construction L is formed in the narrow clearance of lin length between the internal face of the sleeve and the external surface of the shaft 61. By the effect of the labyrinth construction, floating particulate, such as fine oil mist or dirt and dust, generated from lubricant contained in an outer race 63 is discharged into the ambient space of the dust-proof bearing 6 to exactly prevent the inner space of a closed container from contaminated with floating particulate.

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