公开(公告)号：US20010053040A1

公开(公告)日：2001-12-20

申请号：US09858108

申请日：2001-05-15

Applicant: Alps Electric Co., Ltd.

Inventor： Mikio Sekine

IPC: G11B017/02

CPC classification number: H05K1/141 ,  H02K11/215 ,  H02K11/33 ,  H05K3/3447 ,  H05K3/366 ,  H05K2201/1003 ,  H05K2201/10651 ,  H05K2201/10939

Abstract: An index signal output device where a magnetic flux detector is moved in the direction of a relevant tangent to the circumference of a rotor yoke so that the phase difference between an index signal detected by the magnetic flux detector and an index reference signal previously recorded on a floppy disk is within a prescribed range. The lead terminals of the magnetic flux detector are connected to detection signal output terminals on a printed circuit board, and the magnetic flux detector is moved for adjustment in the direction of the tangent by flexing the lead terminals using a tool.

Abstract translation: 一种索引信号输出装置，其中磁通检测器沿与转子轭的圆周相切的切线的方向移动，使得由磁通检测器检测到的指标信号和先前记录在转子轭上的指标参考信号之间的相位差 软盘在规定范围内。 磁通检测器的引线端子连接到印刷电路板上的检测信号输出端子，并且通过使用工具使引线端子弯曲来使磁通量检测器沿切线方向移动。

公开(公告)号：US20010045786A1

公开(公告)日：2001-11-29

申请号：US09855437

申请日：2001-05-15

Applicant: Alps Electric Co., Ltd.

Inventor： Mikio Sekine

IPC: H02K021/12

CPC classification number: H02K1/2786 ,  H02K11/21 ,  H02K11/33

Abstract: A spindle motor rotor having windows at plural places in a flange of a rotor yoke of a spindle motor, as well as projections protruding outwards through the windows, integrally provided in some areas of a ring rotor magnet fitted to the inner circumference of the flange, wherein the rotor magnet is joined to the rotor yoke by welding these projections and one of the projections stretches over both an N pole and an S pole of the rotor magnet.

Abstract translation: 主轴电动机转子在主轴电动机的转子轭的凸缘中的多个位置处具有窗口，以及一体地设置在安装在凸缘的内周上的环形转子磁体的一些区域中的突出部， 其中转子磁体通过焊接这些突起而接合到转子轭，并且其中一个突起在转子磁体的N极和S极上延伸。

公开(公告)号：US20020080511A1

公开(公告)日：2002-06-27

申请号：US10016909

申请日：2001-12-14

Applicant: Alps Electric Co., Ltd.

Inventor： Mikio Sekine

IPC: G11B005/02

CPC classification number: G11B5/02 ,  G11B5/016 ,  G11B23/0007

Abstract: A floppy disk drive comprises at least a data read/write-unit for reading or writing data through a head, motor drivers for driving a spindle motor and a stepping motor, a control unit for controlling overall operation of the floppy disk drive, and a data output unit for supplying data to a main controller via a set cable. The data output unit comprises an output transistor outputting the data to the set cable and supplied with a pull-up current from the main controller via the set cable, and a pull-up transistor and a pull-down transistor connected in series between a power source terminal and a ground. The pull-up transistor and the pull-down transistor drive the output transistor in cooperation, and a current limiting resistance is connected in series to the pull-down transistor.

Abstract translation: 软盘驱动器至少包括用于通过头读取或写入数据的数据读/写单元，用于驱动主轴电机和步进电机的电机驱动器，用于控制软盘驱动器的整体操作的控制单元，以及 数据输出单元，用于经由设定电缆向主控制器提供数据。 数据输出单元包括输出晶体管，其将数据输出到设置电缆，并通过设置电缆从主控制器提供上拉电流;以及上拉晶体管和下拉晶体管，串联连接在电源 源终端和地面。 上拉晶体管和下拉晶体管协同驱动输出晶体管，并且限流电阻串联连接到下拉晶体管。

公开(公告)号：US20020059038A1

公开(公告)日：2002-05-16

申请号：US09790226

申请日：2001-02-21

Applicant: Alps Electric Co., ltd.

Inventor： Mikio Sekine

IPC: G01P021/00

CPC classification number: G11B19/28

Abstract: An index position detector for a spindle motor includes a rotor magnet which is provided on an inner surface of a flange portion of a rotor yoke. A window portion is formed in the flange portion such that a part of the rotor magnet faces outwardly. An inductor is disposed in a stator section and opposes the periphery of the flange portion. The inductor detects a magnetic flux of the rotor magnet via the window portion.

Abstract translation: 用于主轴电动机的指示位置检测器包括设置在转子轭的凸缘部分的内表面上的转子磁体。 窗口部分形成在凸缘部分中，使得转子磁体的一部分面向外。 电感器设置在定子部分中并与凸缘部分的周边相对。 电感器通过窗口部分检测转子磁体的磁通量。