公开(公告)号：US07330334B2

公开(公告)日：2008-02-12

申请号：US11129335

申请日：2005-05-16

申请人： Hayato Shimizu ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari ,  Mikio Tokuyama ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

发明人： Hayato Shimizu ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari ,  Mikio Tokuyama ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

IPC分类号： G11B33/14

CPC分类号： G11B25/043 ,  G11B5/6005 ,  G11B33/142 ,  G11B33/1446 ,  G11B33/148

摘要： A magnetic disk apparatus includes a plurality of magnetic disks driven to rotate by a spindle motor, arms supporting magnetic heads on the magnetic disks, an actuator for moving the arms on the magnetic disks by a voice coil motor, and a housing which surrounds the magnetic disks, the arms and the actuator. A shroud which arcuately surrounds the magnetic disks along the outer periphery thereof has an opened portion for inserting the arms is formed in a part of the housing. The shroud on an upstream side of the arms relative to airflow generated by the magnetic disks when rotating is provided with an opening having a greater width than that of a gap defined between the shroud and the outer periphery of the magnetic disks. An empty bypass channel is provided which communicates from the opening through a rear side of the voice coil motor to the downstream side of the arms.

摘要翻译： 一种磁盘装置，包括由主轴电动机驱动旋转的多个磁盘，支撑在磁盘上的磁头的臂，用于通过音圈电机将臂支撑在磁盘上的致动器，以及围绕磁性的壳体 磁盘，臂和致动器。 沿其外周弧形围绕磁盘的护罩具有用于插入臂的开口部分形成在壳体的一部分中。 臂相对于旋转时由磁盘产生的气流在臂的上游侧的护罩设置有具有比限定在护罩与磁盘外周之间的间隙大的宽度的开口。 提供了一个空的旁路通道，其从开口通过音圈马达的后侧连通到臂的下游侧。

公开(公告)号：US06369978B1

公开(公告)日：2002-04-09

申请号：US09356056

申请日：1999-07-16

申请人： Hayato Shimizu ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari

发明人： Hayato Shimizu ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari

IPC分类号： G11B3314

CPC分类号： G11B5/6005 ,  G11B33/1446

摘要： To suppress pressure fluctuation caused by insertion of arms between disks, which arms support thereon magnetic heads, to reduce disk flutter to thereby reduce disk driving power in a magnetic disk apparatus, there are provided an open space not covered by a shroud, which constitutes a part of a housing structure to cover a side surface of a disk stack, and provided on a downstream side of the arms relative to an airflow moving along surfaces of the disks as the disks rotate, and a channel, which connects a space on an upstream side of the arms and the open space not restricted by the shroud on the downstream side of the arms, the channel being provided with a linear section, which has a rectifying effect on the airflow.

摘要翻译： 为了抑制由于在其上支撑磁头的磁盘之间的臂的插入引起的压力波动，以减少磁盘振动从而减小磁盘装置中的磁盘驱动能力，提供未被罩盖覆盖的开放空间，其构成一个 壳体结构的一部分，以覆盖盘堆叠的侧表面，并且相对于沿着盘旋转的沿着盘的表面移动的气流设置在臂的下游侧;以及通道，其连接上游的空间 臂和开放空间不受臂的下游侧的护罩的限制，通道设有直线部分，其对气流具有整流作用。

公开(公告)号：US06600626B2

公开(公告)日：2003-07-29

申请号：US10103318

申请日：2002-03-22

申请人： Hayato Shimizu ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari ,  Mikio Tokuyama ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

发明人： Hayato Shimizu ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari ,  Mikio Tokuyama ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

IPC分类号： G11B3314

CPC分类号： G11B25/043 ,  G11B5/6005 ,  G11B33/142 ,  G11B33/1446 ,  G11B33/148

摘要： A magnetic disk apparatus arranged in a housing having a plurality of magnetic disks stacked on a rotating shaft, arms supporting thereon magnetic heads and adapted to be inserted between said magnetic disks, a rotary actuator for moving the arms, a housing forming at least a part of an arcuate-shaped shroud which substantially surrounds a portion of side surfaces of the magnetic disks so as to permit movement of the arms and which is concentric with the magnetic disks so as to define a gap between the shroud and the portion of the side surfaces of said magnetic disks. The gap defined between the outer peripheral end surfaces of the magnetic disks and the shroud is in a range of 0.1 mm to 0.6 mm.

公开(公告)号：US06665139B2

公开(公告)日：2003-12-16

申请号：US10022260

申请日：2001-12-20

申请人： Mikio Tokuyama ,  Hayato Shimizu ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari

发明人： Mikio Tokuyama ,  Hayato Shimizu ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari

IPC分类号： G11B3314

CPC分类号： G11B33/08 ,  G11B5/6005 ,  G11B25/043 ,  G11B33/1446

摘要： In a magnetic disc apparatus including a plurality of magnetic discs mounted on a spindle, arms supporting magnetic heads, a rotary actuator for the arms, and a housing having an arcuate-shaped shroud, the improvement wherein gaps between the shroud and the sides of outer peripheries of the magnetic discs are larger than 0.1 mm and less than 0.6 mm. An open space is located, downstream of the arms with respect to the air flow on surfaces of the magnetic discs, the open space being devoid of the shroud. An opening is provided in the shroud, upstream of the arms with respect to the air flow and having a greater width than a width of the gaps defined between the magnetic discs and the shroud, and a bypass channel is provided which communicates between the opening and open space.

摘要翻译： 在包括安装在主轴上的多个磁盘，支撑磁头的臂，用于臂的旋转致动器和具有弧形罩的壳体的磁盘装置中，改进之处在于罩与外侧之间的间隙 磁盘的周边大于0.1mm且小于0.6mm。 相对于磁盘表面上的气流，位于臂的下游的开放空间，开放空间没有护罩。 在护罩中，相对于空气流在臂的上游设置开口，并且具有比限定在磁盘和护罩之间的间隙的宽度更大的宽度，并且提供旁通通道，其在开口和 开放空间。

公开(公告)号：US20050219741A1

公开(公告)日：2005-10-06

申请号：US11129335

申请日：2005-05-16

申请人： Hayato Shimizu ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari ,  Mikio Tokuyama ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

发明人： Hayato Shimizu ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari ,  Mikio Tokuyama ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

IPC分类号： G11B5/60 ,  G11B25/04 ,  G11B33/14

CPC分类号： G11B25/043 ,  G11B5/6005 ,  G11B33/142 ,  G11B33/1446 ,  G11B33/148

摘要： A magnetic disk apparatus includes a plurality of magnetic disks driven to rotate by a spindle motor, arms supporting magnetic heads on the magnetic disks, an actuator for moving the arms on the magnetic disks by a voice coil motor, and a housing which surrounds the magnetic disks, the arms and the actuator. A shroud which arcuately surrounds the magnetic disks along the outer periphery thereof has an opened portion for inserting the arms is formed in a part of the housing. The shroud on an upstream side of the arms relative to airflow generated by the magnetic disks when rotating is provided with an opening having a greater width than that of a gap defined between the shroud and the outer periphery of the magnetic disks. An empty bypass channel is provided which communicates from the opening through a rear side of the voice coil motor to the downstream side of the arms.

摘要翻译： 一种磁盘装置，包括由主轴电动机驱动旋转的多个磁盘，支撑在磁盘上的磁头的臂，用于通过音圈电机将臂支撑在磁盘上的致动器，以及围绕磁性的壳体 磁盘，臂和致动器。 沿其外周弧形围绕磁盘的护罩具有用于插入臂的开口部分形成在壳体的一部分中。 臂相对于旋转时由磁盘产生的气流在臂的上游侧的护罩设置有具有比限定在护罩与磁盘外周之间的间隙大的宽度的开口。 提供了一个空的旁路通道，其从开口通过音圈马达的后侧连通到臂的下游侧。

公开(公告)号：US06898049B2

公开(公告)日：2005-05-24

申请号：US10409450

申请日：2003-04-09

申请人： Hayato Shimizu ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari ,  Mikio Tokuyama ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

发明人： Hayato Shimizu ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari ,  Mikio Tokuyama ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

IPC分类号： G11B5/60 ,  G11B25/04 ,  G11B33/14 ,  G11B17/02

CPC分类号： G11B25/043 ,  G11B5/6005 ,  G11B33/142 ,  G11B33/1446 ,  G11B33/148

摘要： A magnetic disk apparatus includes magnetic disks stacked on a rotating shaft, arms supporting magnetic heads, a rotary actuator for moving the arms, and a housing forming at least a part of an arcuate-shaped shroud which substantially surrounds a portion of side surfaces of the magnetic disks so as to define a gap between the shroud and the portion of the side surfaces of the magnetic disks. The arcuate-shaped shroud has portions delimiting an open space adjacent to another portion of the side surfaces of the magnetic disks which is located on a downstream side of the arms relative to an air flow which moves on surfaces of the magnetic disks. A bypass channel provides air flow to the disks in a region of the open space at a reduced pressure on the downstream side of the arms with respect to pressure at an upstream side of the arms.

摘要翻译： 磁盘装置包括堆叠在旋转轴上的磁盘，支撑磁头的臂，用于移动臂的旋转致动器和形成弓形罩的至少一部分的壳体，其基本上围绕 磁盘，以便限定护罩与磁盘的侧表面部分之间的间隙。 弧形护罩具有限定与磁盘的侧表面的另一部分相邻的开放空间的部分，其位于相对于在磁盘表面上移动的气流的臂的下游侧。 旁路通道相对于臂的上游侧的压力在臂的下游侧以减压的方式在开放空间的区域中提供气流。

公开(公告)号：US5720442A

公开(公告)日：1998-02-24

申请号：US680791

申请日：1996-07-16

申请人： Norihisa Yanagihara ,  Shinsuke Nakagawa ,  Shigeyuki Kobata ,  Masao Iwakura ,  Kazuo Sakai

发明人： Norihisa Yanagihara ,  Shinsuke Nakagawa ,  Shigeyuki Kobata ,  Masao Iwakura ,  Kazuo Sakai

IPC分类号： G11B15/46 ,  G11B15/467 ,  B65H59/38

CPC分类号： G11B15/46 ,  G11B15/4673

摘要： A load torque imposed on a take-up reel motor is estimated from the current in a take-up reel motor and the rotational speed of the take-up reel. The current value supplied to the take-up reel motor is adjusted on the basis of the estimated load torque. A tape feed rate detected is compared with a reference signal produced from a target tape speed signal. On the basis of the comparison result, the torque of the take-up reel motor is controlled in such a manner that the tape feed rate assumes a predetermined value. The gain of a speed control system for controlling the rotational speed of the take-up reel is adjusted on the basis of a detected period of tape speed.

摘要翻译： 卷取卷轴电动机中的电流和卷取卷轴的旋转速度估计施加在卷取卷轴电动机上的负载转矩。 基于估计的负载转矩来调整提供给卷取电动机的电流值。 将检测到的送带速率与从目标带速度信号产生的参考信号进行比较。 基于比较结果，卷取卷盘马达的扭矩以带进给速度为预定值的方式被控制。 基于检测到的带速的周期来调整用于控制卷取卷轴的转速的速度控制系统的增益。

公开(公告)号：US06490123B1

公开(公告)日：2002-12-03

申请号：US09185969

申请日：1998-11-05

申请人： Nobuyuki Okunaga ,  Masao Iwakura ,  Kazuo Nakagoshi ,  Takuji Ogawa ,  Chuma Akira ,  Fumio Kugiya ,  Tomio Suzuki ,  Toshiaki Kojima ,  Kazuo Sakai ,  Naoki Kodama ,  Tatsuya Ishigaki

发明人： Nobuyuki Okunaga ,  Masao Iwakura ,  Kazuo Nakagoshi ,  Takuji Ogawa ,  Chuma Akira ,  Fumio Kugiya ,  Tomio Suzuki ,  Toshiaki Kojima ,  Kazuo Sakai ,  Naoki Kodama ,  Tatsuya Ishigaki

IPC分类号： G11B2500

CPC分类号： G11B33/142 ,  G11B5/012 ,  G11B25/043

摘要： A magnetic disk drive has a housing for a 3.5 inch form factor and disk media of a diameter for a 2.5 inch form factor. The smaller disk media rotate at a high speed while consuming low electric lower and generating less heat while providing for quick access speeds. Usually, when the magnetic disk media are rotated at a higher speed, the electric power consumption and heat generation are increased because of the load increase. This problem is avoided with the use of cooling fins placed about the periphery of the disk media. Further, the smaller size disk media enable a decrease in torque loss during on-load rotation with the media, and a decrease of electric current to the spindle motor during rotation.

摘要翻译： 磁盘驱动器具有用于3.5英寸外形尺寸的外壳和2.5英寸外形尺寸的直径的盘式介质。 较小的磁盘介质以高速旋转，同时消耗低电耗并产生较少的热量，同时提供快速访问速度。 通常，当磁盘介质以更高的速度旋转时，由于负载增加，电力消耗和发热量增加。 通过使用围绕盘介质的周边放置的散热片来避免这个问题。 此外，较小尺寸的磁盘介质能够在介质的负载旋转期间减少扭矩损失，并且在旋转期间减小到主轴电机的电流。

公开(公告)号：US5537266A

公开(公告)日：1996-07-16

申请号：US309410

申请日：1994-09-20

申请人： Taichiro Yamashita ,  Kazuo Sakai ,  Yasuhiro Nemoto ,  Shigeyuki Kobata ,  Masao Iwakura ,  Masatoshi Ishikawa

发明人： Taichiro Yamashita ,  Kazuo Sakai ,  Yasuhiro Nemoto ,  Shigeyuki Kobata ,  Masao Iwakura ,  Masatoshi Ishikawa

IPC分类号： G11B15/665

CPC分类号： G11B15/6655

摘要： In a tape loading device of the invention, a tape is taken out by tape guides mounted on an inclined loading ring, and the loading ring is rotated to wind the tape on a rotary drum from one side thereof. An auxiliary inclined guide is provided between the rotary drum and the leading tape guide. Only during a loading operation, the auxiliary inclined guide contacts the tape, while angularly moved about the leading tape guide. When the loading operation is completed, the auxiliary inclined guide is disengaged from the tape. With the provision of the auxiliary inclined guide, the tape is prevented from being twisted between the rotary drum and the leading tape guide.

摘要翻译： 在本发明的带式装载装置中，通过安装在倾斜装载环上的带导向器将带取出，并且装载环旋转以将带从其一侧卷绕在旋转滚筒上。 辅助倾斜导轨设置在旋转滚筒和导带导向件之间。 只有在装载操作期间，辅助倾斜导向件接触磁带，同时围绕导带导向器有角度地移动。 当装载操作完成时，辅助倾斜导向装置从胶带脱离。 通过设置辅助倾斜导向器，防止带旋转滚筒和导带导向件之间的扭转。

公开(公告)号：US20070047130A1

公开(公告)日：2007-03-01

申请号：US11499482

申请日：2006-08-03

申请人： Hiroaki Shigenaga ,  Sunao Yonekawa ,  Masao Iwakura ,  Masami Miyatake

发明人： Hiroaki Shigenaga ,  Sunao Yonekawa ,  Masao Iwakura ,  Masami Miyatake

IPC分类号： G11B15/48

CPC分类号： G11B33/1433

摘要： Embodiments of the invention provide a magnetic disk unit in which there has been adopted a structure fixing a base and a top plate and preventing a deformation by a bimetal effect. In one embodiment, the magnetic disk unit includes a magnetic disk; a head drive mechanism in which is mounted a head accessing the magnetic disk; a base accommodating the magnetic disk and the head drive mechanism, and possessing a flat part, in which a threaded hole has been formed, in a circumference of an opening edge; and a top cover which is formed by a material whose thermal expansion coefficient differs from that of the base, in which there is provided an escape hole, for a screw, position-aligned to the threaded hole of the flat part, and which is attached to the base by the screw penetrating through the threaded hole and the escape hole for the screw. A slip mechanism for reducing a slip friction resistance is provided respectively in a contact portion between the flat part and the top cover, and a contact portion between a head part of the screw and the top cover.

摘要翻译： 本发明的实施例提供一种磁盘单元，其中采用固定基座和顶板的结构，并且防止双金属效应的变形。 在一个实施例中，磁盘单元包括磁盘; 头驱动机构，其安装有磁头访问磁盘; 容纳磁盘和磁头驱动机构的基座，并且在开口边缘的圆周上具有形成有螺纹孔的平坦部分; 以及顶盖，其由与热膨胀系数不同的材料形成，所述材料具有与所述基座相对应的材料，所述基部设有用于与所述平坦部的所述螺纹孔对准的螺钉的排出孔， 通过螺钉穿过螺纹孔和螺钉的排出孔到基座。 分别在平坦部和顶盖之间的接触部以及螺钉的头部与顶盖之间的接触部分分别设置用于降低滑动摩擦阻力的滑动机构。