公开(公告)号：JPH04280580A

公开(公告)日：1992-10-06

申请号：JP4329991

申请日：1991-03-08

Applicant: SONY CORP

Inventor： OSHIMA EIJI ,  TADA KANEHIRO ,  IKEGAMI KEISUKE ,  NISHIDA YASUO ,  MORO SHUJI

IPC: H04N5/225 ,  H04N5/238

Abstract: PURPOSE:To reduce the weight of the entire camcorder and to reduce the cost by using a loading motor in common use as an iris motor so as the decrease number of motors. CONSTITUTION:A loading motor 11 of the camcorder provided with the loading motor 11 allowing a magnetic tape 6 to be subjected to tape loading to a rotary head drum 10 or selecting a motor is used in common for an iris motor, a couple of aperture blades 32, 32 are driven by a mode gear 14 driven by the loading motor 11 via a rotary arm 35 to open/close an iris aperture 30b.

公开(公告)号：JPH04243046A

公开(公告)日：1992-08-31

申请号：JP1837891

申请日：1991-01-18

Applicant: SONY CORP

Inventor： OSHIMA EIJI

IPC: G11B15/60 ,  G11B23/087

Abstract: PURPOSE:To set the size of a mechanical deck at nearly the same size as the size of the tape cassette and to obtain the accuracy of the tape guide of the tape cassette on a mechanical deck side. CONSTITUTION:The tape guide 15 on the front edge side of the tape cassette is mounted in the state of clattering with a cassette casing 10 and the accuracy is obtd. by regulating the position by a supporting pin 23 on the mechanical deck side.

公开(公告)号：JPS63103459A

公开(公告)日：1988-05-09

申请号：JP24929386

申请日：1986-10-20

Applicant: SONY CORP

Inventor： KUSUI YOSHIO ,  OSHIMA EIJI ,  TSUYAMA MANABU ,  KUMAGAI ATSUHIRO

IPC: G11B15/22

Abstract: PURPOSE:To prevent a tape from being drawn out excessively, and to thin the whole of a device, by engaging a gear having a plane clutch with the gear on one side of the gears provided at a supplying reel base and a take-up reel base in a magnetic recording and reproducing device. CONSTITUTION:The gear 14 having the plane clutch 13 is engaged with the gear 6 provided at the take-up reel base 2, and the braking device of the reel base is extended in the horizontal direction of a chassis 1. And by rewinding the tape from a state where the connecting part 20a of a stopper 20 is connected to the connecting lug 16a of a clutch plate 16 by a driving mechanism, the appropriate level of loading torque is applied on the gear 14 by surface contact between the felt of the clutch plate 16 whose accompanying rotation with the gear 14 is stopped by the stopper 20, and the friction surface of the gear 14 driven with pressure to the felt side by a compression coil spring. Therefore, the appropriate level of braking is applied on the gear 6 of the take-up reel base 2 being engaged with the gear 14, thereby, the run idle of the take-up reel base 2 at time of rewinding the tape can be suppressed.

公开(公告)号：JPH11167761A

公开(公告)日：1999-06-22

申请号：JP33434197

申请日：1997-12-04

Applicant: SONY CORP

Inventor： YAMADA TAKASHI ,  YAMAMOTO KAZUYUKI ,  TAKAHASHI KAZUO ,  MAMIYA TOSHIO ,  OSHIMA EIJI

IPC: G11B17/04 ,  G11B21/12

Abstract: PROBLEM TO BE SOLVED: To provide a disk storage device, wherein the device is made thin after a disk cartridge is loaded and handleability is improved by simplifying the loading process of the disk cartridge. SOLUTION: A cartridge holder 23 is moved in a roughly horizontal state in a vertical direction orthogonal to the horizontal direction only when a disk cartridge 1 is loaded in a cartridge loading part or the disk cartridge 1 is ejected from the cartridge loading part, and the thickness of a device including the cartridge holder 23 at the time of loading the same is set larger than that of the device other than the loading or ejecting time.

公开(公告)号：JPH10289545A

公开(公告)日：1998-10-27

申请号：JP9621397

申请日：1997-04-14

Applicant: SONY CORP

Inventor： OSHIMA EIJI ,  MAMIYA TOSHIO ,  YAMADA TAKASHI ,  TAKAHASHI KAZUO ,  YAMAMOTO KAZUYUKI

IPC: G11B21/02

Abstract: PROBLEM TO BE SOLVED: To provide a head actuator with improved tracking ability of a head. SOLUTION: This actuator consists of a turning arm 6 which turns centering a pivot 5, a floating slider 12 having a magnetic head provided via a suspension 2 on tip part, a 1st driving part 4 for turning the turning arm provided on the side of the pivot of the turning arm, and a 2nd driving part 13 provided on the curved actuator side. The 2nd actuator part 13 is fitted in the neighborhood of the tip part of the turning arm. The 1st and 2nd driving parts 4, 13 are configured as voice coil motors. The 2nd driving part permits a precise tracking servo.

公开(公告)号：JPH10288223A

公开(公告)日：1998-10-27

申请号：JP9621097

申请日：1997-04-14

Applicant: SONY CORP

Inventor： YAMAMOTO KAZUYUKI ,  MAMIYA TOSHIO ,  YAMADA TAKASHI ,  TAKAHASHI KAZUO ,  OSHIMA EIJI ,  KAWAZOE KAZUSHIGE ,  YOTSUYA MICHIO ,  OUCHI HIRONOBU

IPC: F16C17/10 ,  G11B19/20

Abstract: PROBLEM TO BE SOLVED: To prevent the occurrence of operational failure due to the leakage of a lubricating fluid. SOLUTION: In a spindle motor 3 of a disc device, perfluoropolyether is sealed between a rotary shaft 106 and a bearing surface 113 as a lubricating fluid. The perfluoropolyether is the same type as the fluid applied to the disc of the hard disc device as a liquid lubricant. When the rotary shaft 106 is rotated, dynamic pressure of the lubricating fluid is generated by herringbone grooves 111 to support radial load. Even when the lubricating fluid leaks, operational failure of the disc device does not occur, since the fluid is the same type as the liquid lubricant for the disc.

公开(公告)号：JPH10241277A

公开(公告)日：1998-09-11

申请号：JP4123497

申请日：1997-02-25

Applicant: SONY CORP

Inventor： TAKAHASHI KAZUO ,  MAMIYA TOSHIO ,  YAMADA TAKASHI ,  YAMAMOTO KAZUYUKI ,  OSHIMA EIJI ,  KAWAZOE KAZUSHIGE ,  YOTSUYA MICHIO ,  OUCHI HIRONOBU

IPC: G11B19/20

Abstract: PROBLEM TO BE SOLVED: To grasp a magnetic fluid in utilizing a leakage magnetic flux of a disk chucking magnet and to confine the magnetic fluid in its position. SOLUTION: A shaft 16 is inserted into a cylindrical body 30, and a viscous fluid 32 is sealed between this shaft and the cylindrical body to form a fluid bearing part 40. A fluid sealing 50 is provided on an upper end side of the fluid bearing part. This means is composed of recessed annular parts 54 and 55 and a magnetic fluid 61 sealed in a gap between them. Magnetic flux passing through a cylinder body 21 by the recessed annular parts becomes easily leakable in these parts, and the leakage magnetic flux is grasped to be confined in the recessed annular parts. A passage for passing the recessed annular parts is interrupted by the confinement of the fluid in virtue of this magnetic flux, so that the fluid 32 and the magnetic fluid itself are never leaked to the outside. Since a magnet to be exclusively used for attracting the magnetic fluid is not required, the structure can be miniaturized and thin structive by a space for this magnet.

公开(公告)号：JPH10149647A

公开(公告)日：1998-06-02

申请号：JP30634996

申请日：1996-11-18

Applicant: SONY CORP

Inventor： MAMIYA TOSHIO ,  YAMAMOTO KAZUYUKI ,  YAMADA TAKASHI ,  TAKAHASHI KAZUO ,  OSHIMA EIJI

IPC: G11B23/00

Abstract: PROBLEM TO BE SOLVED: To eliminate various inconveniences caused by adhesives for attaching a center core in a cartridge disk having the center core attached to a disk substrate. SOLUTION: A center core includes first and second cores 13a and 13b, a disk substrate 11 is elastically held from upper and lower sides between these cores and thus the center core is easily attached without using any adhesives different from the conventional case. Various inconveniences caused by timedepending changes in the adhesives are eliminated, and in particular since the disk substrate 11 and the center core are freely extended without being bound against a temperature change, the disk substrate 11 is prevented from being deformed for a long time.

公开(公告)号：JPH10125032A

公开(公告)日：1998-05-15

申请号：JP33481296

申请日：1996-11-29

Applicant: SONY CORP

Inventor： YAMADA TAKASHI ,  YAMAMOTO KAZUYUKI ,  MAMIYA TOSHIO ,  TAKAHASHI KAZUO ,  OSHIMA EIJI

IPC: G11B23/03

Abstract: PROBLEM TO BE SOLVED: To prevent the strength of a device body from deteriorating and at the same time make thin and compact a device by placing a shutter that is operated with a cartridge body as a trigger at the time of inserting a disk cartridge into a cartridge holder for holding the disk cartridge. SOLUTION: A cartridge holder 16 is fitted into a mechanical chassis 17, and left and right support brackets 19 for supporting the rear edge part of the cartridge holder 16 rotatably are screwed to a specific position, thus supporting the cartridge holder 16 so that it can be inclined up and down for the mechanical chassis 17 and the cartridge holding part of the cartridge holder 16 is made correspond to the upper part of a spindle motor 12 that is fixed to the mechanical chassis 17. A drive mechanism for performing reading/writing using a disk-shaped storage that is accommodated rotatably can be made thin and a device can be made light, while preventing the strength of the device body from deteriorating.

公开(公告)号：JPH10125014A

公开(公告)日：1998-05-15

申请号：JP33481096

申请日：1996-11-29

Applicant: SONY CORP

Inventor： YAMAMOTO KAZUYUKI ,  MAMIYA TOSHIO ,  YAMADA TAKASHI ,  TAKAHASHI KAZUO ,  OSHIMA EIJI

IPC: G11B21/02

Abstract: PROBLEM TO BE SOLVED: To move a read/write head surely and stably for an information receding medium by bending and forming a rotation arm in nearly L shape, and providing a rotation center near a rotation drive part. SOLUTION: A rotation support member for supporting a read/write head is mounted to a rotation arm 55 and the tip of the rotation arm and has a pair of upper and lower sliders 52a and 52b for supporting the read/write head. Also, the rotation arm 55 is bend and formed in nearly L-shaped, dog leg shape, sliders 52a and 52b of an elastic support are fixed to the tip part of the flex before being inserted into a disk cartridge nearly linearly from the tip, thus performing support by a lamp 91. The sliders 52a and 52b move stably to enable an accurate correspondence of the read/write head.