公开(公告)号：JPH11185366A

公开(公告)日：1999-07-09

申请号：JP34920097

申请日：1997-12-18

Applicant: SONY CORP

Inventor： KAWAZOE KAZUSHIGE ,  OSHIMA EIJI

IPC: G11B19/00 ,  G11B19/04

Abstract: PROBLEM TO BE SOLVED: To provide the portable disk drive in which the deformation of a disk is prevented when an external impact is applied and the damages to the disk and various constituting members in a casing are prevented. SOLUTION: A magnetic disk 200 is arranged in a casing 100. The disk 200 is rotatively driven by a spindle motor 160. Data recording and reproducing are conducted by the magnetic head held by a suspension 140 and sliders 130. A deformation amplitude controlling member 400 is provided to a chassis 100A of the casing 100 to control the deformation range caused by an impact acceleration in the thickness direction of the disk 200 when an external impact is applied. The deformation of the disk 200 is controlled by control sections 410 and 420 of the member 400 so that the suspension 140 does not impact on the inner wall of the casing 100.

公开(公告)号：JPH10269691A

公开(公告)日：1998-10-09

申请号：JP6851297

申请日：1997-03-21

Applicant: SONY CORP

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

IPC: G11B19/20 ,  F16C17/10

Abstract: PROBLEM TO BE SOLVED: To provide the dynamic pressure fluid bearing capable of more suppressing a rotary shake than heretofore. SOLUTION: A rotary thrust plate 115 is formed to be gradually thicker from the inner circumferential side to the outer circumferential side, and an upper surface 116a of a bearing part 116 to be opposite to a lower surface 115a of this rotary thrust plate 115 is formed to be flat surface. Consequently, a gap between the lower surface 115a of the rotary thrust plate 115 and the upper surface 116a of the bearing part 116 is gradually narrower toward the outer circumferential side. When the rotary thrust plate 115 is rotated, a lubricant fluid on the discoid surface is moved to the outer circumferential side, whereas since the gap with the bearing part 116 is narrower toward the outer circumferential side, the lubricant fluid is most compressed on the outermost circumferential side so that a dynamic pressure is generated. By this dynamic pressure of the lubricant fluid, a thrust load can be supported.

公开(公告)号：JPH1064205A

公开(公告)日：1998-03-06

申请号：JP22426696

申请日：1996-08-26

Applicant: SONY CORP

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

IPC: G11B21/02

Abstract: PROBLEM TO BE SOLVED: To enlarge scope for designing of each part, simplify constitution, and reduce cost by keeping a ramp outside of a disk cartridge loading part when loading and ejecting a disk cartridge. SOLUTION: A turning actuator 51 is doglegged. Suspensions 58a and 58b on the end of the actuator, and mounting plates 57a and 57b go in and out at almost right angles with respect to a head inserting slot 7, which makes it possible to minimize the width of the head inserting slot 7. Thus, the head inserting slot 7, from which dust is most liable to enter into a disk cartridge 1, can be minimized as far as possible to securely prevent or effectively control entering of dust.

公开(公告)号：JPH08111863A

公开(公告)日：1996-04-30

申请号：JP27065694

申请日：1994-10-07

Applicant: SONY CORP

Inventor： OSHIMA EIJI ,  HAMADA KENICHI ,  NISHIDA YASUO ,  MORO SHUJI

IPC: H04N5/232 ,  H04N7/15

Abstract: PURPOSE: To enhance the operability of a television camera with simple configuration by revising an image pickup direction of the television camera depending on an operation input or a control command sent from a transmission opposite party. CONSTITUTION: A teleconference equipment 1A displays a video image picked up by a TV camera 3A to a display device 4B of an opposite party through a channel 7. Furthermore, an image pickup direction of the TV camera 3A is switched by operating its own camera controller on a controller 6A to display a video image of a person 11A or a video image on a paper material placing board 5A onto the display device 4B of the opposite party. Furthermore, the camera controller of the opposite party on the controller 6A is operated to switch the image pickup direction of the opposite party TV camera 3B and the video image of the opposite party person 11B, the video image on the paper material placing board 5B and a video image of other party 12 taking part in the conference are displayed on its own display device 4A. As a result, the image pickup direction of the TV camera is changed with simple configuration.

公开(公告)号：JPH07336939A

公开(公告)日：1995-12-22

申请号：JP9168895

申请日：1995-03-24

Applicant: SONY CORP

Inventor： NAKAYAMA AKIHITO ,  SAKAMOTO SATOSHI ,  OSHIMA EIJI ,  TANAKA KAZUHIRO ,  MORO SHUJI

IPC: G01D5/245 ,  H02K7/06 ,  H02K11/00

Abstract: PURPOSE:To achieve high-speed and high-accuracy feed using a DC motor at low cost with a simple and compact configuration. CONSTITUTION:A linear feed device 10 including a DC motor 11 with brush, a lead screw 12 which is provided in one piece at a rotary shaft 11a of the DC motor, and a nut member 13 which is screwed to the lead with screws is provided with a magnet 14 which is mounted to the rotary shaft of the DC motor and where N and S poles are magnetized alternately in peripheral direction, and an MR sensor 15 which is fixed and laid out being opposite to the magnet.

公开(公告)号：JPH07301769A

公开(公告)日：1995-11-14

申请号：JP11737594

申请日：1994-05-09

Applicant: SONY CORP

Inventor： TANAKA KAZUHIRO ,  OSHIMA EIJI

IPC: G02B7/02 ,  G02B27/64 ,  G03B5/00 ,  H04N5/232

Abstract: PURPOSE:To realize eccentricity of an optical axis correcting lens against the main lens system in almost the same plane without moving the eccentricity in an optical axis direction in a supporting mechanism for the optical axis correcting lens suitable for an optical system equipment requiring the correction of camera shake, and to accurately correct an optical axis. CONSTITUTION:As for a leaf spring 9 supporting a convex lens 8 for correction in a direction orthogonally crossed with the optical axis; 1st vertical spring pieces 13 and 13 and 2nd vertical spring pieces 16 and 16 are formed to be extended in an opposite direction to each other with a coupling piece 15 as a folding part, and the lens 8 is supported at the ends of the spring pieces 13 and 13 on an anti-coupling piece side and the ends of the spring pieces 16 and 16 on the anti-coupling piece side are supported in a lens barrel.

公开(公告)号：JPH07244957A

公开(公告)日：1995-09-19

申请号：JP5248994

申请日：1994-02-28

Applicant: SONY CORP

Inventor： FUJII HIROSHI ,  OSHIMA EIJI

IPC: G11B23/087

Abstract: PURPOSE:To prevent a recording medium tape from being damaged at the time of opening a front lid which protects the recording medium tape in nonuse. CONSTITUTION:A passing recessed part 13 for passing the lid opening member to be used for a miniature tape cassette is formed at the position corresponding to a tape outlet 6 at one side of the front end part on a bottom surface wall 14 of a cassette case 2. A blocking projection 29 to be fitted into the passing recessed part 13 is formed on the inside surface of the front lid 20 freely turnably supported by the front end part of the cassette case 2. Further, a rib 30, the rear edge of which is positioned in almost parallel with the magnetic tape 18 at the time of closing the lid, is projectingly provided on the inside surface of the front lid 20 in the state the rear edge 30a has no difference in level with the projecting end part 29b of the blocking projection 29. Even when there is the sag on the magnetic tape, the lower edge is relatively slid down along the rear edge of the rib and never caught by the blocking projection.

公开(公告)号：JPH06215453A

公开(公告)日：1994-08-05

申请号：JP347793

申请日：1993-01-12

Applicant: SONY CORP

Inventor： YAMAMOTO KAZUTOSHI ,  OSHIMA EIJI

IPC: G11B15/61 ,  G11B15/665 ,  G11B33/12

Abstract: PURPOSE:To obtain a recording and reproducing device with is capable of being accurately manufactured at a low cost by forming a rotary head drum and the guide block of a tape drawing out guide member independent of a die casting or a high-precision resin, also in which no deformation of a lead of the rotary head drum is generated. CONSTITUTION:The peripheral surface of the bottom of the drum 7 at the fixed side of the rotary head drum 3 is supported in the point contact state on supporting pieces 4a, 4b, 4c which are erected from a supporting pedestal 1 subjected to a sheet metal drawing and the fixed drum 7 is fastened and fixed by one shaft part 10 at the eccentric position from the center shaft of the rotary drum head 3. Weld fixing pieces 13a, 13b, 13c and 14a, 14b, 14c of the plate sheet drawn guide blocks 13 and 14 are respectively welded and fixed on the supporting pieces 15a, 15b, 15c and 16a, 16b, 16c which are erected from the supporting pedestal 1.

公开(公告)号：JPH0628636A

公开(公告)日：1994-02-04

申请号：JP20301292

申请日：1992-07-07

Applicant: SONY CORP

Inventor： OSHIMA EIJI ,  KUMAGAI ATSUHIRO

IPC: G11B5/41 ,  G11B5/53

Abstract: PURPOSE:To surely remove the tacky adhesive foreign matter sticking to a magnetic head by sticking micro-abrasive grains to cleaning means for cleaning the magnetic head in rolling contact with a rotary head drum. CONSTITUTION:The cleaning roller 100 is formed of a porous and elastic material, for example, polyurethane foam, etc., and the micro-abrasive grains 103 used for a video head lapping tape, etc., are stuck thereto. These abrasive grains 103 introduce into a three-dimensional net mesh structure of the urethane foam. The abrasive grains 103 stored in the roller 100 polish lightly the surface of the head 4 at the time of cleaning the magnetic head 4 by the roller 100 and the foreign matter sticking to the head 4 is therefore removed.

公开(公告)号：JPH04357354A

公开(公告)日：1992-12-10

申请号：JP12915291

申请日：1991-05-31

Applicant: SONY CORP

Inventor： TAKASAKI SABURO ,  OSHIMA EIJI

IPC: F16H25/00 ,  G11B15/43 ,  G11B15/61 ,  G11B15/665 ,  G11B15/675

Abstract: PURPOSE:To enable the automatic return of a cam pin in a cam mechanism suitable for rotating a tension arm with a tension regulator of a VTR by providing a return cam for returning the cam pin deviating from a gap or the like in a continuous part between a fixed cam and movable cam to the cam surface. CONSTITUTION:When a drive motor is rotated in one rotation in a popping-up type VTR, a slide chassis 3 slides through a gear train or the like toward the rotary head drum side and a cam pin 26 is moved along a first cam surface 24a of a fixed cam 22 to pivot a tension arm 9 counterclockwise. When the chassis 3 slides further and the cam pin 26 is moved along a second cam surface 24b to a position of a third cam surface 31 of a movable cam 23, the chassis 3 is stopped. Then, when the cam pin 26 is moved from the cam surfaces 24b to 31 and deviated from a gap 32 between both, the chassis 3 is returned so that the cam pin 26 can be returned to the second cam surface 24b by means of a return cam 27.