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1. 发明专利

JPH0150310B2 失效
公开(公告)号：JPH0150310B2
公开(公告)日：1989-10-27
申请号：JP24453683
申请日：1983-12-27
申请人： FUJITSU LTD
发明人： TOCHAMA KAZUNORI , ITO KATSUHIKO , KUDO RYOSUKE , KOMATSUZAKI TOSHIAKI , MIHARA TAKAHISA
IPC分类号： H02K1/28 , H02K1/22 , H02K1/27

2. 发明专利

JPS59165269A Automatic fixing device 失效
标题翻译：自动固定装置
公开(公告)号：JPS59165269A
公开(公告)日：1984-09-18
申请号：JP3853183
申请日：1983-03-09
申请人： Fujitsu Ltd
发明人： KOMATSUZAKI TOSHIAKI , MIHARA TAKAHISA , TOCHIYAMA KAZUNORI , NISHINOMIYA TAKESHI
IPC分类号： G11B19/22 , G11B19/20 , G11B21/02
CPC分类号： G11B19/20
摘要： PURPOSE:To fix automatically the motion of a magnetic head and to prevent a storage surface from damaging by providing a detector which detects a power source for powering on a motor for magnetic disk driving being turned off, taking out the counter electromotive force of the motor by the detection signal of the detector, and fixing the movable part of a magnetic disk device by said force. CONSTITUTION:This fixing device consists of the detector 3 which detects a break of electric power supplied from an electric power unit to a DC brushless motor 1, a rectifying circuit 4 which rectifies the counter electromotive force of the DC brushless motor 1 obtained through a changeover switch 2, and an electromagnetic fixing mechanism 5 which operates to fix the movable part of the magnetic disk device by the counter electromotive force of the DC brushless motor 1 obtained through the rectifying circuit 4. If the DC brushless motor 1 is powered off owing to a stop of the use of the magnetic disk, power failure, etc., the detector 3 detects that and the changeover switch 2 is switched as shown in a figure, and the counter electromotive force generated by the brushless motor 1 is rectified by a rectifying circuit 4 to operate the fixing mechanism 5.
摘要翻译：目的：为了自动修复磁头的运动，并通过提供一个检测器来检测磁盘的动力来防止磁盘的运动，从而防止存储表面的损坏，从而取消马达的反电动势通过检测器的检测信号，并通过所述力固定磁盘装置的可动部分。构成：该固定装置包括检测从电力单元向DC无刷电动机1供给的电力断路的检测器3，整流电路4，其对通过转换得到的直流无刷电动机1的反电动势进行整流开关2，以及电磁固定机构5，其通过由整流电路4获得的直流无刷电动机1的反电动势来固定磁盘装置的可动部。如果直流无刷电动机1由于停止使用磁盘，断电等，检测器3检测到切换开关2如图所示切换，并且由无刷电动机1产生的反电动势通过整流来整流电路4以操作固定机构5。

3. 发明专利

JPS60139140A OUTER ROTARY TYPE MOTOR 失效
公开(公告)号：JPS60139140A
公开(公告)日：1985-07-23
申请号：JP24453683
申请日：1983-12-27
申请人： FUJITSU LTD
发明人： TOCHIYAMA KAZUNORI , ITOU KATSUHIKO , KUDOU RIYOUSUKE , KOMATSUZAKI TOSHIAKI , MIHARA TAKAHISA
IPC分类号： H02K1/28 , H02K1/22 , H02K1/27
摘要： PURPOSE:To prevent an outer member from deforming or expanding and contracting by separating inner and outer members which form a rotor and have different thermal expansion coefficients through an air gap along the circumferential direction, and securing only at the ends therebetween. CONSTITUTION:A rotary hub 16' is composed of an end wall 16'a and a hollow cylindrical portion 16'b formed integrally with the wall 16'a. A ring-shaped projection 16'c which is axially projected and continued in a circumferential direction is formed on the inner surface of the wall 16'a. The end of a rotor 17 is bonded and secured to the end of the projection 16'c. The rotor 17 is arranged separately at the outer radial peripheral surface of its cylindrical housing 17a via an air gap of the size W over the inner peripheral surface of a rotary hub cylindrical portion 16'b in the circumferential direction.

4. 发明专利

JPS5622272A MAGNETIC DISC UNIT 失效
公开(公告)号：JPS5622272A
公开(公告)日：1981-03-02
申请号：JP9712179
申请日：1979-07-30
申请人： FUJITSU LTD
发明人： SUZUKI MASAO , KOMATSUZAKI TOSHIAKI
IPC分类号： G11B19/27 , G11B17/34 , G11B25/04
摘要： PURPOSE:To make stable the read-in accuracy, by eliminating the track location change of disc, through the application of belt tension to the disc spindle shaft from specific direction. CONSTITUTION:The tension of the belt 6 turning the disc 2 is exerted to the spindle shaft 4 of the disc 2 from the direction orthogonal to the seek direction 11 in which the read-in head 9 moves with the actuator 17. With this constitution, since the track location of the direction 11 is not changed since no effect of belt tension is given. Accordingly, the read-in accuracy of high density recording can be made stable.

5. 发明专利

JPS5278407A MAGNETIC DISC DEVICE 失效
公开(公告)号：JPS5278407A
公开(公告)日：1977-07-01
申请号：JP15396675
申请日：1975-12-25
申请人： FUJITSU LTD
发明人： SUZUKI MASAO , ITOU KATSUHIKO , CHIHARA KENICHI , KOMATSUZAKI TOSHIAKI
IPC分类号： G11B33/14 , G11B21/21 , G11B23/50
摘要： PURPOSE:To provide a magnetic disc device, the surface of which is equipped with a flow adjusting plate so as to float the powder dusts therefrom for removal.

6. 发明专利

JPS57133565A HEAD POSITIONING DEVICE 失效
公开(公告)号：JPS57133565A
公开(公告)日：1982-08-18
申请号：JP1771681
申请日：1981-02-09
申请人： FUJITSU LTD
发明人： KOMATSUZAKI TOSHIAKI
IPC分类号： G11B21/02 , G11B5/55
摘要： PURPOSE:To simplify the structure of a magnetic head supporting part by a fan- shaped member, where a belt wound around the rotation shaft of a driving motor is fixed in the end part of the arc region, and a rotation shaft part provided in the center of this fan-shaped member. CONSTITUTION:A belt 10 is attached to the end part of the arc region of a fan- shaped member which is fixed to a rotation shaft 9 and has a carriage 11 on the surface, and the belt 10 is rotated and moved together with the carriage 11 with the rotation shaft 9 as the center by a pulse motor driving shaft 7. The length (the radius of the fan) between the head position and the center of the rotation shaft and the length (the radius of the disc) between the center of the rotation shaft and the center of the disc are determined properly to approximate the motion of the head to a linear motion. A sufficient stiffness is given to the rotation shaft 9 for the purpose of rotating and moving the head 12 and the disc while keeping the internal between them constant accurately.

7. 发明专利

JPS5730150A Head positioning mechanism of magnetic disk device 失效
标题翻译：磁盘设备的头部定位机制
公开(公告)号：JPS5730150A
公开(公告)日：1982-02-18
申请号：JP10343880
申请日：1980-07-28
申请人： Fujitsu Ltd
发明人： KOMATSUZAKI TOSHIAKI
IPC分类号： G05D3/12 , G11B5/55 , G11B21/02 , G11B21/10
CPC分类号： G11B5/5521
摘要： PURPOSE:To reduce troubles by simplifying constitution by providing magnetic pole teeth to a magnetic-head supporting moving element and a stator which has counter magnetic pole teeth. CONSTITUTION:A disk 1 is turning as shown by an arrow Q, and on its surface, information tracks are formed concentrically at a prescribed pitch. When a magnetic head 2 is position at one track, a moving element 3 is driven as shown by an arrow R. Namely, magnetic pole tooth groups 31 and 33 provided to the moving element 3 are applied with magnetic suction force and magnetic repulsion force from counter magnetic pole tooth groups 61 and 62 provided to stators 4 and 5 respectively to move linearly in the radius direction of the disk 1 immediately.
摘要翻译：目的：通过将磁极齿设置在磁头支撑运动元件和具有反磁极齿的定子上，通过简化结构来减少故障。构成：盘1如箭头Q所示转动，在其表面上，信息轨道以规定的间距同心地形成。当磁头2位于一个轨道上时，如箭头R所示驱动移动元件3.即，提供给移动元件3的磁极齿组31和33被施加有磁吸力和磁力排斥力分别设置在定子4和5上的反向磁极齿组61和62，以立即在盘1的半径方向上线性移动。

8. 发明专利

JPS5622266A FLEXIBLE MAGNETIC DISC UNIT 失效
公开(公告)号：JPS5622266A
公开(公告)日：1981-03-02
申请号：JP9711779
申请日：1979-07-30
申请人： FUJITSU LTD
发明人： KOMATSUZAKI TOSHIAKI
IPC分类号： G11B5/82 , G11B5/596 , G11B13/04 , G11B21/10
摘要： PURPOSE:To increase the recording density of magnetic disc, by utilizing optical method through the use of a disc of magnetic coating on the concentrical circle printed according to the recording track. CONSTITUTION:The light from LED9 irradiates on the flexible disc 1 with the spot around 0.2mm. in diameter through the glass fiber 8, and after print, it passes through the cocentric circle 5 coated with the magnetic substance layer 6 by the reflection on transmission via the fiber 8 and detected at the detectors A and B. The detection signal drives and controls the pulse motor to align the head. In this case, two pulses are detected with the detectors A and B through the movement of the head, and the head is aligned by switching the detectors A and B through the odd and even number of tracks of the disc 1. Thus, the track pitch of flexible disc is made fine to increase the recording density.

9. 发明专利

JPS5278408A MAGNETIC DISC DEVICE 失效
公开(公告)号：JPS5278408A
公开(公告)日：1977-07-01
申请号：JP15396775
申请日：1975-12-25
申请人： FUJITSU LTD
发明人： SUZUKI MASAO , ITOU KATSUHIKO , KOMATSUZAKI TOSHIAKI , CHIHARA KENICHI
IPC分类号： G11B33/14 , G11B21/21 , G11B23/50
摘要： PURPOSE:To provide a magnetic disc device, in which self-circulation of air is accomplished by the rotations of the magnetic disc so as to effect circulation of cleaned air.

10. 发明专利

JPH0310190B2 失效
公开(公告)号：JPH0310190B2
公开(公告)日：1991-02-13
申请号：JP3793684
申请日：1984-02-29
申请人： FUJITSU LTD
发明人： KOMATSUZAKI TOSHIAKI , MIHARA TAKAHISA , ITO KATSUHIKO , KUDO RYOSUKE , TOCHAMA KAZUNORI
IPC分类号： G11B21/22 , G11B5/48 , G11B5/54 , G11B21/12

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