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1. 发明专利

JP2004030735A Optical disk unit 审中-公开
公开(公告)号：JP2004030735A
公开(公告)日：2004-01-29
申请号：JP2002182493
申请日：2002-06-24
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： AKIMARU KENJI , TAKIZAWA TERUYUKI , SAJI YOSHITO , EZAWA KOZO
IPC分类号： G11B7/12
摘要： PROBLEM TO BE SOLVED: To provide an optical disk unit having high dustproof performance and heat radiation performance. SOLUTION: This optical disk unit is characterized by being provided with: a disk rotating means loading a disk thereon and rotating it; a plurality of optical heads performing recording or reproduction with respect to a disk; a guide means guiding the optical disk transferrably in the direction of nearly one radius of the disk; a transfer driving means for transferring the optical head along the guide means: a base member on which the disk rotating means, the guide means, and the transfer driving means are arranged integrally; and a casing housing the base member and the plurality of optical heads in almost a hermetically sealed state. The optical disk unit is constituted so that an opening part is provided on the disk outer peripheral side of the case, an opening and closing member opening and closing the opening part is provided, the optical head transferred to the disk outer peripheral side pushes and opens the opening and closing member, and at least a part of the optical head is projected outside the casing. COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2001256762A DISK DEVICE 失效
公开(公告)号：JP2001256762A
公开(公告)日：2001-09-21
申请号：JP2000064899
申请日：2000-03-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAJI YOSHITO , IGAWA YOSHIHIRO , AKIMARU KENJI , INADA MASAHIRO
IPC分类号： F16F15/02 , G11B25/04 , G11B33/08
摘要： PROBLEM TO BE SOLVED: To realize a disk device which can stably record and reproduce by reducing unnecessary vibration with respect to wide disk rotational frequency for interchange between dissimilar media such as DVD and CD and rapid reproduction such as CD-ROM 48 fold speed, etc. SOLUTION: Primary resonance frequency of a dynamic vibration absorber is made always to be coincident with the disk rotational frequency by constituting the dynamic vibration absorber so that equivalent rigidity of its damper can be changed with freely increasing/decreasing. Thereby vibration reducing effect of the dynamic vibration absorber can be always effectively exerted with respect to wide disk rotational frequency.

3. 发明专利

JP2001052346A OPTICAL PICKUP ADJUSTING MECHANISM 失效
公开(公告)号：JP2001052346A
公开(公告)日：2001-02-23
申请号：JP2000087808
申请日：2000-03-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： INADA MASAHIRO , SAJI YOSHITO , IGAWA YOSHIHIRO , AKIMARU KENJI
IPC分类号： G11B21/02 , G11B7/08 , G11B7/095
摘要： PROBLEM TO BE SOLVED: To properly make tangential tilt adjustments of the optical pickup of an optical disk drive, which records and reproduces a high-density and high- capacity type disk type recording medium, such as a DVD, by moving up and down a guide rail in parallel to and away from the surface of the disk. SOLUTION: This mechanism is equipped with sub-shaft support parts 31a and 31b, which support both the end parts of a sub-shaft 30, guiding the radial movement of an optical disk 10, rotatably on a base and a moving means (sub- shaft adjusting screw) 32 which moves the sub-shaft 30 radially to and away from a base chassis 3. When the sub-shaft 30 is moved radially by the moving means 32, the sub-shaft support parts 31a and 31b rotate both the end parts of the sub-shaft 30 on axes of rotation to displace the sub-shaft 30 perpendicularly to the surface of the disk, thereby making tangential tilt adjustments of the optical pickup.

4. 发明专利

JPH10106133A DISK DEVICE 失效
公开(公告)号：JPH10106133A
公开(公告)日：1998-04-24
申请号：JP25697596
申请日：1996-09-27
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： AKIMARU KENJI , TAKIZAWA TERUYUKI , IGAWA YOSHIHIRO
IPC分类号： G11B17/028 , G11B19/20
摘要： PROBLEM TO BE SOLVED: To suppress vibration caused by a disk and a disk motor, etc., and to hardly affect the influcence of temp. and secular changes upon the device by a simple structure. SOLUTION: The device is provided with the disk 1 for recording and reproducing a signal, the disk motor 2 for rotating the disk 1, a turntable 3 fixed to a rotary shaft of the disk motor 2 and mounted with the disk 1, a clamper 4 for holding the disk 1 with the turntable 3, an elastic member 9 held by the clamper 4 and a subordinate member 10 fixed to the clamper 4 via the elastic member 9, and characteristic frequency determined by a spring constant of the elastic member 9 and mass of the subordinate member 10 is made to approximately coincide with a characteristic frequency of a vibration system including the disk 1 or the disk motor 2, so that the elastic member 9 and the subordinate member 10 are worked like a dynamic vibration reducer without having a viscous damping term.

5. 发明专利

JP2002092919A OPTICAL DISK DEVICE 失效
公开(公告)号：JP2002092919A
公开(公告)日：2002-03-29
申请号：JP2000286734
申请日：2000-09-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： IGAWA YOSHIHIRO , SAJI YOSHITO , NISHINO YUKIYOSHI , AKIMARU KENJI , INADA MASAHIRO
IPC分类号： G11B7/095
摘要： PROBLEM TO BE SOLVED: To reduce the position-deviation of a light spot during a tilt adjustment. SOLUTION: The light spot 15 is arranged on the intersecting point of an arm 9 and an arm 10 by using a trapezoid linkage mechanism consisting of four joints which fixes an optical block on either of a surface or a bottom, and the tilt adjustment is performed by displacing the surface side and the bottom side relatively.

6. 发明专利

JPH11176077A SPINDLE MOTOR AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JPH11176077A
公开(公告)日：1999-07-02
申请号：JP33470397
申请日：1997-12-05
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： IGAWA YOSHIHIRO , TAKIZAWA TERUYUKI , AKIMARU KENJI
IPC分类号： G11B17/028 , G11B19/20
摘要： PROBLEM TO BE SOLVED: To hold a disk highly accurately and to reduce needless vibration (swig-rotation of a turn table and a rotor) caused by high speed rotation of a disk, in a spindle motor rotating the disk. SOLUTION: This motor is provided with a turn table 3 holding and rotating a disk 1, a rotor 4 giving a rotation-driving force to this turn table 3, and a rotation shaft 5 provided on a rotation shaft of this rotor 4, a rotation shaft 5 is inserted and fixed (a first fixing means) in the rotation shaft of the turn table 3, and the turn table and the rotor 4 are fixed with an adhesive 8 (a second fixing means) through a gap 9.

7. 发明专利

JPH11162061A DISK DEVICE 失效
公开(公告)号：JPH11162061A
公开(公告)日：1999-06-18
申请号：JP32366697
申请日：1997-11-26
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： AKIMARU KENJI , TAKIZAWA TERUYUKI , IGAWA YOSHIHIRO
IPC分类号： G11B17/028 , G11B25/04
摘要： PROBLEM TO BE SOLVED: To provide a disk device capable of suppressing damage of a disk eve when an heavy shock is applied to a disk device. SOLUTION: This disk device has a turntable 3b fixed to the rotary shaft 4a of a disk motor 4, a sheathing plate 9 opposing to the upper surface of the disk 2 held with a clamping part 3c, a central part abutting member 12 which is fixed on a surface opposing to the disk 1 of the seathing plate 9 and is to be abutted on the turntable 3b or the rotary shaft of the motor when an external force (a vibration or an impact) is applied to the device and a seathing side abutting member 14 which is fixed on the surface opposing to the disk 1 of the seathing plate 9 and is to be abutted on the upper surface of the inner peripheral area of the disk where a signal is not recorded when the external force is applied and suppresses the disk 1 from being damaged by making the gap between the disk 1 and the seathing plate side abbuting member 14 larger than that between the turntable 3b and the central part abutting member 1 and by stipulating the moving displacement of the turntable 3b and the moving displacement of the disk 1 when the external force is applied.

8. 发明专利

JPH08171760A MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH08171760A
公开(公告)日：1996-07-02
申请号：JP31634494
申请日：1994-12-20
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： AKIMARU KENJI , HONJO HIRONORI
IPC分类号： G11B15/665
摘要： PURPOSE: To perform recording/reproducing on tapes having different track angles and to reduce damage to the tape at this time. CONSTITUTION: This device is provided with driving members 7 and 8 moved between a first position for tape guide posts 3 to 6 for winding a tape on a drum with a Ω1 winding angle and a α1 lead angle and a second position for winding a tape with a Ω2 winding angle and a α2 lead angle and the tilting angles of the tape guide posts 3 to 6 are made the same in the first and second positions. In the process of a movement between the winding completion position and the nonwinding position of the tape guide posts, the device may also be constructed by a rotary means for rotating a drum 2, tape guide posts 3 to 6, a feeding reel base 12 and a winding reel base 13 in a relative rotational manner and a rotational amount control means for controlling a rotational amount. Further, a notched part may be provided in a part of the tape lead of the drum.

9. 发明专利

JP2002312968A OPTICAL DISK DEVICE 失效
公开(公告)号：JP2002312968A
公开(公告)日：2002-10-25
申请号：JP2001117846
申请日：2001-04-17
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： AKIMARU KENJI , SAJI YOSHITO , TAKIZAWA TERUYUKI
IPC分类号： G11B33/14 , G11B7/085 , G11B7/12
摘要： PROBLEM TO BE SOLVED: To provide an optical disk device that sufficiently radiates heat generated from a laser light source. SOLUTION: The optical disk device is equipped with an optical head unit having a laser light source that records or reproduces signals on a disk, a heat transmitting member that is in contact with the laser light source, and a heat radiating member that is connected to the heat transmitting member, and the device is also equipped with a spindle motor for rotatably driving the disk. The heat transmitting member and the heat radiating member are composed of a high-heat conductor. The device is so structured that the heat radiating member is provided near the spindle motor if the optical head unit is situated on the inner periphery of the disk.

10. 发明专利

JP2001143459A DISK DEVICE 失效
公开(公告)号：JP2001143459A
公开(公告)日：2001-05-25
申请号：JP32256899
申请日：1999-11-12
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAJI YOSHITO , TAKIZAWA TERUYUKI , AKIMARU KENJI , INADA MASAHIRO
IPC分类号： G11B33/12
摘要： PROBLEM TO BE SOLVED: To improve response characteristics in the transmission of signal by reducing the driving resistance of an actuator or wiring resistance of a signal transmitting system concerning the flexible cable of a head inside a disk device. SOLUTION: A flexible cable 111 is drawn out of the inner disk peripheral side of a head 110 and extended through a U-shaped curved part, for following the motion of the head to the inner/outer disk periphery, the edge part of the flexible cable, which forms the curved part while the head is positioned on the inner-most disk peripheral side, on the side of a disk motor is formed along with the outer peripheral shape of the adjacent disk motor, and by making the width of the flexible cable near the apex of the curved part at such a time into a minimum width, the resistance of the flexible cable can be reduced.

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