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21. 发明专利

JPH05114209A GUIDE-POST GUIDE MECHANISM OF MAGNETIC RECORDING AND REPLAY APPARATUS 失效
公开(公告)号：JPH05114209A
公开(公告)日：1993-05-07
申请号：JP27524591
申请日：1991-10-23
申请人： HITACHI LTD
发明人： IZUMI KATSUHIKO , IWAKURA MASAO , UEDA MASASHI , KODAMA KAZUYUKI
IPC分类号： G11B15/665
摘要： PURPOSE:To realize a stable loading action in a magnetic recording and replay apparatus wherein a tape loading action is performed by moving a guide-post base. CONSTITUTION:A sidewall 120e is installed in such a way that it is nearly perpendicular to the sliding face of a guide-post base 246 on a movement regulation member 120 on which the guide-post base 246 is slid. The formation plane of said sidewall is set near the change part of a groove direction or near the part immediately before a part where the guide-post base comes into pressure contact. In addition, the sidewall 120e is constituted of a spring body. It is possible to prevent the posture of the guide-post base from becoming unstable in a loading process by means of the sidewall which has been installed so as to be nearly parallel to the groove direction of the movement regulation member and so as to be nearly perpendicular to the sliding face.

22. 发明专利

JPH04344357A TAKING UP MECHANISM OF MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH04344357A
公开(公告)日：1992-11-30
申请号：JP11585391
申请日：1991-05-21
申请人： HITACHI LTD
发明人： IWAKURA MASAO , IZUMI KATSUHIKO , MASUDA NORIAKI , ABE FUKUOKU , UEDA MASASHI , KODAMA KAZUYUKI
IPC分类号： G11B15/32
摘要： PURPOSE:To execute a stable taking-up operation by rotationally driving an idler arm according to the revolution on a driving side of a clutch mechanism part, using a magnet part as the driving side of the clutch part and using both of the upper and lower end face of the toric magnet. CONSTITUTION:This mechanism is made of supply side reel base 2, a take-up side reel base 3, an idler gear 5 which selectively and rotationally drives both reel base 2, 3, an idler arm 6 which freely rotationally and axially supports gear 5, and a magnetic clutch 1 consisting of a magnet 14 and hysteresis plate 16 for applying a specified taking-up torque to the supply side reel base 2 and the taking-up side reel base 3. The magnetic 14 is disposed on the driving side of the magnetic clutch 1 and the hysteresis plate 16 is disposed on the driven side to align the revolving central shaft of the magnetic clutch 1 and the revolving shaft of the idler arm 6, by which the idler arm 6 and the magnet 14 are opposed on the end face on the side opposite from the opposite end face of the magnet 14 to the hysteresis plate 16.

23. 发明专利

JPH04195850A CASSETTE EJECT METHOD FOR COMPOUND DECK 失效
公开(公告)号：JPH04195850A
公开(公告)日：1992-07-15
申请号：JP32301990
申请日：1990-11-28
申请人： HITACHI LTD
发明人： UEDA MASASHI
IPC分类号： G11B15/675
摘要： PURPOSE:To attach/detach cassette of the DAT, C cassette to an from a compound deck with operation convenience by making a DAT camera to be viewed vertically erect with a cylinder in the bottom and by utilizing kangaroo pocket type. CONSTITUTION:The same kangaroo pocket type tray 3 which is the eject method for conventional C cassettes 5 is utilized, and the mechanism is erected with the cylinder in the bottom, making the DAT cassette tray 2 kangaroo pocket type. Then, when the user handles the cassette, the DAT cassette 4 is also made to have its front side to face the loading user. Thus, the DAT cassette can be handled with the same operation as the C cassette, eliminating confusion, and the DAT, C cassette compound deck with operation convenience even in design where a symmetrical design can be utilized can be obtained.

24. 发明专利

JPH0369053A TAPE LEADER MECHANISM 失效
公开(公告)号：JPH0369053A
公开(公告)日：1991-03-25
申请号：JP20465189
申请日：1989-08-09
申请人： HITACHI LTD
发明人： KAJI NOBUYUKI , UEDA MASASHI , FUSE KENJI
IPC分类号： G11B15/665
摘要： PURPOSE:To position a tape guide with high accuracy by applying pulling force obliquely downward to a direction, where a guide base is press-contacted through a linking member, to a catcher at a prescribed angle to the surface of a chassis when a prescribed tape path is formed. CONSTITUTION:A loading ring 14 and the guide base 11 are linked through the linking member 15 and as the turn of the ring 14, the base 11 is guided by a guide rail 13, moved in an arrow C direction and engaged with the catcher 4. Then, mounting operation is completed. Since the base 11 is drawn by the linking member 15, the base 11 is guided by the guide rail 13 and moved parallelly with the surface of the chassis 2. When the tape mounting operation is completed, the posture of the base 11 is changed in an inclined direction at a prescribed inclination angle by a guide surface 4-a of the catcher. Afterwards, since a guide base boss 18 is engaged with a V-shaped groove in the upper part of the catcher 4, a horizontally rectangular coordinate position is determined and since a positioning pin 17 of a guide base seat part is engaged with a groove provided on the guide surface 4-a of the catcher, a horizontally rotating direction position is determined.

25. 发明专利

JPH01253861A TAPE PULLOUT DEVICE 失效
公开(公告)号：JPH01253861A
公开(公告)日：1989-10-11
申请号：JP7801288
申请日：1988-04-01
申请人： HITACHI LTD
发明人： UEDA MASASHI
IPC分类号： G11B15/665
摘要： PURPOSE:To simplify constitution and to make the position precision of a tape pullout pin accurate by fitting an elastic member to an arm driving means. CONSTITUTION:When a mode cam 7 is rotated clockwise at the time of pulling out a tape, a driving gear 4 rotates counterclockwise through gears 6 and 5, a driving gear spring 3 also rotates counterclockwise, a driving pin 1a is pressed by the spring 3 and a rotating arm 1 turns clockwise. The tape is pulled out in the direction of a cylinder 8 by pins 1b and 1c, and the tape is sandwiched by a capstan 11 and a pinch roller 2a. When the rotating angle of the gear 4 is made larger than the pullout stroke of the arm 1, and when the arm 1 is abutted on a stopper 9, pressure, which has resistance even if the spring 3 is bent and pressure from the tape presses on the pins 1b and 1c, is given to the arm 1. At the time of storage, the spring 3 deforms, and the arm 1 is pressed on the guide hole 10b of a chassis 10 with constant pressure, and therefore positioning is attained.

26. 发明专利

JPH01248349A MAGNETIC TAPE DRIVING MECHANISM FOR MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH01248349A
公开(公告)日：1989-10-03
申请号：JP7431288
申请日：1988-03-30
申请人： HITACHI LTD
发明人： MASUDA NORIAKI , UEDA MASASHI , ICHIKAWA TAKASHI , KODAMA KAZUYUKI , OGIJI KENJI
IPC分类号： G11B15/44
摘要： PURPOSE:To simplify a mechanism and to accelerate operating speed by operating an idler incorporating a torque limiter for reproduction only flatly separately from the idler for search to be engaged with a reel base. CONSTITUTION:At the time of performing search at high speed, a motor shaft gear 18 fixed on a motor shaft is engaged with the shaft, and also, the idler 18 operated in such a way that it can be turned around the shaft is engaged with the reel bases 4 and 15, then, the reel bases 4 and 15 are driven. At the time of performing standard reproduction, the idlers 19 and 20 for reproduction only separately from the idler 18 perform turning operation, and engage with the motor shaft gear 17 and the reel bases 4 and 15, which transmits power to the torque of a motor, however, the idlers 19 and 20 are provided with slip mechanisms, thereby, no torque exceeding a prescribed level is transmitted. At the time of performing review where a pinch roller 13 is pressed to a capstan 12 and a tape is fed, the slippage of the idlers 19 and 20 for reproduction only become back torque. Also, when the idlers 19 and 20 for reproduction only are operated, no engagement between the idler 18 for fast search and the reel base is performed. In such a way, it is possible to simplify the mechanism and to accelerate the operating speed.

27. 发明专利

JPS6414760A MODE OPERATION MECHANISM FOR MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPS6414760A
公开(公告)日：1989-01-18
申请号：JP16979387
申请日：1987-07-09
申请人： HITACHI LTD
发明人： MASUDA NORIAKI , OGIJI KENJI , ICHIKAWA TAKASHI , UEDA MASASHI , KODAMA KAZUYUKI
IPC分类号： G11B15/10 , G11B15/18 , G11B15/22
摘要： PURPOSE:To reduce the number of parts and to improve the reliability of operation by reciprocating a single slider member having plural end face cams for directly driving a mechanism element and plural apertures at the time of mode operation. CONSTITUTION:The slider 13 has the aperture parts 13-a, 13-b and the end face cams 13-d, 13-c so as to be slided in the longitudinal direction by engaging the aperture part 13-a with guide pins 59, 60 planted on a chassis 1 and is regulated by locks 70, 71. A cam groove 14-a is formed on a mode cam 14, the cam 14 is capable of rotating around a mode cam shaft 68 and regulated by a lock 69 and a cam detecting pin 67 clamped by the slider 13 is engaged with the cam groove 14-a. Thereby, the slider 13 is moved correspondingly to the radius of the cam groove 14-a. Namely, the mechanism element can be driven by reciprocating the slider 13 provided with the cams 13c, 13d and the aperture parts 13a, 13b to execute mode operation. Consequently, the number of parts can be reduced and the reliability of operation can be improved.

28. 发明专利

JPS62232749A MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPS62232749A
公开(公告)日：1987-10-13
申请号：JP7421686
申请日：1986-04-02
申请人： HITACHI LTD
发明人： MASUDA NORIAKI , HAYASHI MASAMICHI , ICHIKAWA TAKASHI , UEDA MASASHI
IPC分类号： G11B15/665
摘要： PURPOSE:To prevent a phase shift between a mode ring and a tape guide driving means from generating, to simplify a mechanism, and to reduce cost, by driving the tape guide driving means by the turning of the mode ring only for a prescribed interval. CONSTITUTION:In a state possible to draw out a tape from a cassette, the rotation of a link gear 5 is suppressed by the abutting of stoppers 5-e and 5-d with the end face 4-d of a mode ring 4, then the link gear 5 being positioned. Next when the ring 4 is started to rotate, and the stopper 5-e is engaged with the ring 4, an interference between the tip shape of the stopper and the engaging part of the ring 4 is eliminated by a recessed groove 4-f having a wide width. And after a loading operation, a stopper 5-c is regulated by the end face 4-d of the ring 4, thereby a rotation being held, and it is possible to perform a mode operation keeping the loading operation. Thus, since it is possible to perform the mode operation keeping the drive of the gear 5, etc., by the turning of the ring 4 only for the prescribed interval, and holding a state, the phase shift between the ring 4 and the gear 5, etc., can be prevented, and the mechanism can be simplified.

29. 发明专利

JP2003173594A MAGNETIC RECORDING AND REPRODUCING DEVICE 审中-公开
公开(公告)号：JP2003173594A
公开(公告)日：2003-06-20
申请号：JP2001373521
申请日：2001-12-07
申请人： HITACHI LTD
发明人： TAKEDA HIDEKAZU , MASUDA NORIAKI , UEDA MASASHI , YAMASHITA YOSHIHARU , TAKADA MASAMI , MARUYAMA AKIRA
IPC分类号： G11B15/61
摘要： PROBLEM TO BE SOLVED: To suppress tape flotation in high-speed rotation of a drum, to improve the performance of contact between a tape and a head, and to obtain stable tape travel restriction nearby the drum. SOLUTION: A device has a slanting pin 9 whose slanting angle is made βless than a slanting angle where a tape 1 on a travel path does not twist and a tape upper-end width restriction guide 10 which slants by γ in the same direction therewith on a tape exit side of a rotary drum 2. Further, the device has a tape upper end width restriction guide 6 which is provided nearly upright and a slanting pin 5 whose slanting angle is made α larger than the slanting angle where the tape on the travel path does not twist. COPYRIGHT: (C)2003,JPO

30. 发明专利

JPH09289789A MOTOR DRIVER CIRCUIT FOR RECORDING REPRODUCER 失效
公开(公告)号：JPH09289789A
公开(公告)日：1997-11-04
申请号：JP10088296
申请日：1996-04-23
申请人： HITACHI LTD
发明人： TAKEDA HIDEKAZU , MASUDA NORIAKI , ABE FUKUOKU , INOUE ATSUSHI , INABA YUJI , UEDA MASASHI , FUJIMORI SHINYA
IPC分类号： G11B15/46 , H02P6/10
摘要： PROBLEM TO BE SOLVED: To reduce vibrations and noises at the time of revolution at high speed and rotational unevenness at the time of revolution at low speed, by changing over an amplification factor by the information of a comparator means and optimizing an output from a rotor-position detecting means. SOLUTION: A rotor is rotated by successively changing over conduction through a three-phase coil by a motor driving IC 9 in a capstan motor 8, and an output Vh from a Hall element is amplified by an amplifier circuit 10 and fed back to the motor driving IC 9. A comparator circuit 11 compares the magnitude relationship of motor driving control voltage Vm and reference voltage Vo, and outputs the information of Vm>Vo at the time of revolution at high speed and the information of Vm

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