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1. 发明专利

JP2017090105A 回転角度検出装置审中-公开
公开(公告)号：JP2017090105A
公开(公告)日：2017-05-25
申请号：JP2015217217
申请日：2015-11-05
申请人：アルプス電気株式会社 , Alps Electric Co Ltd
发明人： YASUDA YUKIKO , TOKUNAGA ICHIRO , HOSOGOE JUNICHI , ARAUCHI SUSUMU
IPC分类号： G01D5/245
摘要：【課題】複数の永久磁石を離間して配設した検出精度の良い回転角度検出装置を提供することを目的とする。【解決手段】回転角度検出装置100は、回転体RB10に連動して回動する複数の永久磁石11と磁気を検出する磁気検出素子13と回転体RB10の回転角度を算出する処理部17とを備え、複数の永久磁石11のそれぞれが、回転中心軸RBjを中心とした仮想の円に沿った円環形状を分割した円弧形状であるとともに、円弧形状の中央が仮想の円に沿った位置で等間隔になるように配設され、1対のS極とN極に着磁された複数の永久磁石11の内、センタ磁石11Cとセンタ磁石11Cの両側に1つずつ配設されたサイド磁石11Sとを有し、磁気検出素子13が、初期状態において、センタ磁石11Cと対向するように配設され、磁気検出素子13側から見たときに、センタ磁石11Cの着磁極とサイド磁石11Sの着磁極とが異なっていることを特徴としている。【選択図】図2

2. 发明专利

JP2015021736A 位置検出装置有权
标题翻译：位置检测装置
公开(公告)号：JP2015021736A
公开(公告)日：2015-02-02
申请号：JP2013147566
申请日：2013-07-16
申请人：アルプス電気株式会社 , Alps Electric Co Ltd
发明人： YASUDA YUKIKO , TOKUNAGA ICHIRO , SHINOHARA EIJI
IPC分类号： G01D5/12
CPC分类号： G01B7/003 , G01D5/147 , G01D11/245
摘要：【課題】検知範囲を狭めることなく投影面積を小さくすることができる位置検出装置を提供する。【解決手段】検知部1は、スペーサ部材2を挟んで第1磁石3と対向する位置に配置されるとともに、第1磁石3は、第2磁石4と逆の極性同士が対応するように、スペーサ部材2と第2磁石4との間に配置され、第2磁石4からの磁力が第1磁石3からの磁力よりも被検知空間内において検知部1からの距離が遠い位置にまで到達して、第1磁石3からの磁力と前記第2磁石4からの磁力との合成により磁界が発生しており、検知部1は、被検知空間内を移動する被検知物体により第2磁石4からの磁力の影響が変化することによる磁界の変化を検出して、被検知物体の接近を検出する。【選択図】図2
摘要翻译：要解决的问题：提供一种能够减小投影面积而不会使检测范围变窄的位置检测装置。解决方案：检测单元1设置在跨越隔离构件2的面对第一磁体3的位置，第一磁体3为设置在间隔构件2和第二磁体4之间，使得第一磁体3和第二磁体4的相反极性彼此面对。来自第二磁体4的磁力比来自第一磁体3的磁力到达要检测的空间中距离检测单元1更远的位置，通过合成来自第一磁体的磁力产生的磁场检测单元1检测由于来自第二磁体4的磁力的影响被在空间内移动的待检测物体的影响而变化的磁场的变化为检测到，从而检测待检测物体的接近。

3. 发明专利

JP2011033387A Angular detection sensor 审中-公开
标题翻译：角度检测传感器
公开(公告)号：JP2011033387A
公开(公告)日：2011-02-17
申请号：JP2009177672
申请日：2009-07-30
申请人： Alps Electric Co Ltd , アルプス電気株式会社
发明人： HIROZAWA NOBUYUKI , TOKUNAGA ICHIRO , ANDO HIDETO , YAMADA YUKIMITSU
IPC分类号： G01D5/245
摘要： PROBLEM TO BE SOLVED: To provide an angular detection sensor applied to an apparatus which switches its drive mode in accordance with the rotational angle of an object to be detected, which outputs a detection voltage in a step manner with respect to the rotational angle of the object by a simple processing structure.
SOLUTION: The angular detection sensor is equipped with: a magnet 18 which is rotatable together with a rotating shaft; a magnetic sensor for outputting a signal corresponding to a change in magnetic flux caused by the rotation of the magnet 18; first and second detection units 21, 22 for binarizing the signal outputted from the magnetic sensor and outputting it; and a variable resistor circuit 31 for outputting detection voltages with varied voltage levels in a step manner on the basis of the binarized signal outputted from the first and second detection units 21, 22. The first and second detection units 21, 22 are arranged spaced apart from each other by the magnetized pitch of the magnet 18 in the rotational direction of the magnet 18.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种角度检测传感器，其应用于根据被检测物体的旋转角切换其驱动模式的装置，其以相对于旋转的步进方式输出检测电压通过简单的处理结构对象的角度。
解决方案：角度检测传感器配备有：与旋转轴一起旋转的磁体18; 磁传感器，用于输出对应于由磁体18旋转引起的磁通变化的信号; 用于对从磁传感器输出的信号进行二值化并输出的第一和第二检测单元21,22; 以及可变电阻电路31，用于基于从第一和第二检测单元21,22输出的二值化信号，以逐步的方式输出具有变化的电压电平的检测电压。第一和第二检测单元21,22间隔开通过磁铁18的旋转方向的磁化间距彼此相对。磁盘18的旋转方向上的相对于磁铁18的磁化间距。（C）2011，JPO＆INPIT

4. 发明专利

JP2010085389A Angle sensor 审中-公开
标题翻译：角度传感器
公开(公告)号：JP2010085389A
公开(公告)日：2010-04-15
申请号：JP2009125080
申请日：2009-05-25
申请人： Alps Electric Co Ltd , アルプス電気株式会社
发明人： TOKUNAGA ICHIRO
IPC分类号： G01D5/14
CPC分类号： G01B7/30 , G01D5/145
摘要： PROBLEM TO BE SOLVED: To provide an angle sensor ensuring powerful angle detection precision regardless of the mount precision of a magnetic detecting element and obtaining a simple control configuration. SOLUTION: The angle sensor includes: a magnet 2 that is attached to a rotatable rotor and is rotatable together with the rotor; an annular yoke 3 that extends annularly to surround an outer peripheral surface around a rotary axis of the magnet 2 and in which a notch portion 11 is formed in a part in the extending direction; and a Hall element 4 that is disposed in the notch portion 11, detects the strength of a magnetic field in the radial direction of the magnet 2, and also detects the strength of a magnetic field in the rotation angle direction perpendicular to the magnetic field in the radial direction of the magnet 2. The angle of rotation of the magnet 2 is calculated on the basis of signals corresponding to the strength of the magnetic field in the radial direction and rotation angle direction, detected by the Hall element 4. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种角度传感器，确保强大的角度检测精度，而不管磁检测元件的安装精度如何，并获得简单的控制构造。解决方案：角度传感器包括：磁体2，其附接到可转动的转子并与转子一起旋转; 围绕磁体2的旋转轴线围绕外周面的环状磁轭3，其中在延伸方向上形成有切口部分11的部分; 以及设置在切口部11中的霍尔元件4，检测磁体2的径向的磁场强度，并且还检测与磁场垂直的旋转角度方向的磁场强度基于与由霍尔元件4检测的径向和旋转角度方向上的磁场的强度相对应的信号来计算磁体2的旋转角度。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2010019552A Motion sensor 审中-公开
标题翻译：运动传感器
公开(公告)号：JP2010019552A
公开(公告)日：2010-01-28
申请号：JP2006298623
申请日：2006-11-02
申请人： Alps Electric Co Ltd , アルプス電気株式会社
发明人： KURATA KOJI , TOKUNAGA ICHIRO , KASASHIMA MASAO
IPC分类号： G01D5/18 , G01B7/00 , G01R33/09 , H01L43/08
CPC分类号： G01D5/145
摘要： PROBLEM TO BE SOLVED: To provide a contactless motion sensor using a magnetoresistive effect element, and especially a motion sensor having an improved linearity of position detection.
SOLUTION: A first magnet 4 and a second magnet 5 are crossed into the shape of X, and a magnetoresistive effect element (GMR element) 15 is linearly moved in the space between the magnets 4, 5. Between the magnets 4, 5, a rotating magnetic field region where an external magnetic field is rotated and displaced is formed from their left-side ends 4b, 5b over to right-side ends 4c, 5c, and the megnetoresistive element 15 is movably supported so as to pass the rotating magnetic field region. Therefore, with its movement the direction of magnetization of the free magnetic layer of the magnetoresitive element 15 gradually varies. Consequently, the linearity of the position detection can be improved.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种使用磁阻效应元件的非接触运动传感器，特别是具有改善的位置检测线性度的运动传感器。解决方案：第一磁体4和第二磁体5交叉成X的形状，并且磁阻效应元件（GMR元件）15在磁体4,5之间的空间中线性移动。在磁体4之间，如图5所示，从其左侧端部4b，5b向右侧端部4c，5c形成有外部磁场旋转移位的旋转磁场区域，并且，电阻元件15可动地支承，旋转磁场区域。因此，随着其移动，磁阻元件15的自由磁性层的磁化方向逐渐变化。因此，能够提高位置检测的线性。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2007220367A Magnetic switch 有权
标题翻译：磁性开关
公开(公告)号：JP2007220367A
公开(公告)日：2007-08-30
申请号：JP2006037010
申请日：2006-02-14
申请人： Alps Electric Co Ltd , アルプス電気株式会社
发明人： KAWAMURA MASAHIRO , TOKUNAGA ICHIRO
IPC分类号： H01H36/00 , G01R33/09 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To provide a magnetic switch which prevents zero field from being formed in a magnetoresistive effect element, and ensures the high stability. SOLUTION: Each of magnetoresistive effect elements 10A and 10B at least includes a fixed layer, an antiferromagnetic layer for pinning magnetization directions α1 and α2 within the fixed layer to the predetermined directions, a free layer where its inner magnetization directions β1 and β2 are changed in accordance with the external fields, and biasing layers 15a and 15b which provide biasing fields γ1 and γ2 for setting up the magnetization directions within the fixed layer to the predetermined reference directions. An angle is set to 90° between the directions of external fields H1 and H2 and those of biasing fields γ1 and γ2. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种防止在磁阻效应元件中形成零场的磁开关，并且确保高稳定性。解决方案：每个磁阻效应元件10A和10B至少包括固定层，用于将固定层内的磁化方向α1和α2固定到预定方向的反铁磁层，其内部磁化方向β1和β2的自由层根据外部场变化的偏置层15a，15b，其设置用于将固定层内的磁化方向设定为规定的基准方向的偏置场γ1，γ2。在外场H1和H2的方向与偏置场γ1和γ2的方向之间的角度设定为90°。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2006208255A Sensor for detecting angle 有权
标题翻译：用于检测角度的传感器
公开(公告)号：JP2006208255A
公开(公告)日：2006-08-10
申请号：JP2005022442
申请日：2005-01-31
申请人： Alps Electric Co Ltd , アルプス電気株式会社
发明人： KAWAMURA MASAHIRO , TOKUNAGA ICHIRO
IPC分类号： G01D5/245 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To provide a sensor for detecting angle which enhances detection accuracy in rotational angle.
SOLUTION: Unidirectional alternating bias magnetic field Hex* of a fixed magnetism layer 2 is set to be 200 kA/m or larger, thereby enabling values of waveform distortions to be suppressed into 7 degrees or less. Furthermore, the unidirectional alternating bias magnetic field Hex* of the fixed magnetism layer 2 is set to be 320 kA/m or larger, thereby enabling values of waveform distortions to be suppressed into 4 degrees or less. Moreover, a soft magnetism layer 4b of a free magnetism layer 4 is made of an NiFe alloy, and a diffusion preventing layer 4a is made of an CoFe alloy, thereby enabling the absolute value of magnetostrictive constant λ of the free magnetism layer 4 can be set to 1.3 ppm or smaller.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于检测角度的传感器，其提高旋转角度的检测精度。解决方案：将固定磁层2的单向交流偏置磁场Hex *设定为200kA / m以上，从而能够将波形失真的值抑制在7度以下。此外，固定磁层2的单向交替偏置磁场Hex *被设定为320kA / m以上，从而能够将波形失真的值抑制在4度以下。此外，自由磁性层4的软磁性层4b由NiFe合金制成，并且扩散防止层4a由CoFe合金制成，从而能够使自由磁性层4的磁致伸缩常数λ的绝对值为设定为1.3ppm以下。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2003060256A Magnetic switch and magnetic sensor 有权
标题翻译：磁性开关和磁性传感器
公开(公告)号：JP2003060256A
公开(公告)日：2003-02-28
申请号：JP2001245487
申请日：2001-08-13
申请人： Alps Electric Co Ltd , アルプス電気株式会社
发明人： KASASHIMA MASAO , TOKUNAGA ICHIRO , OKUMURA HIROBUMI , KIKUCHI SEIJI
IPC分类号： G01R33/09 , H01H36/00 , H01L43/08 , H03K17/97
CPC分类号： H03K17/97
摘要： PROBLEM TO BE SOLVED: To provide a magnetic switch with high-speed switching operation by instantaneously switching an output signal from a magnetoresistive effect element. SOLUTION: The magnetic switch has magnetoresistive effect element 5 including a free layer 5d with orientation of magnetization changeable by an outer field. The magnetic switch includes a first magnet 7 and a second magnet 6 with different orientation and magnitude of field, and a external field shielding member 10 at changeable positions relative to the first and second magnets 6 and 7. The field shielding member 10 moves to a first position for exerting both fields of first and second magnets 6 and 7 on the magnetoresistive effect element 5 and making the magnetization of the free layer 5d in a first direction, and moves to a second position for exerting one of fields of the first and second magnets 6 and 7 on the magnetoresistive effect element 5 and making the magnetization of the free layer 5d in a second direction.
摘要翻译：要解决的问题：通过瞬时切换来自磁阻效应元件的输出信号，提供具有高速切换操作的磁开关。解决方案：磁开关具有磁阻效应元件5，其包括具有由外场变化的磁化取向的自由层5d。磁开关包括具有不同取向和幅度的第一磁体7和具有不同取向和幅度的第二磁体6以及相对于第一和第二磁体6和7在可变位置处的外部场屏蔽构件10.场屏蔽构件10移动到第一位置用于在磁阻效应元件5上施加第一和第二磁体6和7的两个场，并使自由层5d的磁化在第一方向上，并且移动到第二位置，以施加第一和第二磁体磁阻效应元件5上的磁体6和7，并使自由层5d在第二方向上的磁化。

9. 发明专利

JPH10232141A METHOD FOR MAGNETIZING MAGNETIC BODY AND MAGNETIC POTENTIOMETER USING THE SAME 失效
公开(公告)号：JPH10232141A
公开(公告)日：1998-09-02
申请号：JP3646397
申请日：1997-02-20
申请人： ALPS ELECTRIC CO LTD
发明人： OGAWA TOSHIO , OKUMURA HIROBUMI , TOKUNAGA ICHIRO , INOUE MITSUMASA
IPC分类号： G01B7/30 , G01B7/00 , G01D5/14
摘要： PROBLEM TO BE SOLVED: To provide a method for magnetizing a magnetic body that has improved linearity within a specific angle range and can obtain large output and a magnetic potentiometer using the magnetic body. SOLUTION: A ferromagnetic body 20 that is in disk shape while being saturated and magnetized and has a magnetic pole with at least four poles in terms of top view and a magnetic detection element (Hall element) for detecting the magnetic force of the normal constituent of the ferromagnetic body 20 while being arranged on the peripheral side surface of the ferromagnetic body 20 are provided. When a distance between magnetic poles N and S where the disk of the ferromagnetic body 20 is adjacent is set to A, a distance between a cross point C between a line L1 for connecting a center O of the ferromagnetic body 20 from a magnetization center (hole part) and a line L2 for connecting the magnetic poles N and S being adjacent to the line L1 and the magnetization center (hole part) is set to B, the magnetization center (hole part) of the magnetic pole is set to a position (A is smaller than the radius of the ferromagnetic body 20) for satisfying B/A=0.5-1.0 away from a disk side surface in the magnetized ferromagnetic body 20.

10. 发明专利

JP2010249719A Minute angle detection sensor 有权
标题翻译：分钟角检测传感器
公开(公告)号：JP2010249719A
公开(公告)日：2010-11-04
申请号：JP2009100713
申请日：2009-04-17
申请人： Alps Electric Co Ltd , アルプス電気株式会社
发明人： TOKUNAGA ICHIRO , SHINANO MASAAKI
IPC分类号： G01D5/244 , B62D5/04
摘要： PROBLEM TO BE SOLVED: To provide a simple and inexpensive minute angle detection sensor detecting a minute displacement angle of a detection object with high accuracy.
SOLUTION: The minute angle detection sensor is provided with: a multipolar magnet 5 rotating in line with a displacement in a circumferential direction of a steering shaft 2, and having N- and S-pole alternately magnetized at equal pitches in the circumferential direction; a magnetic sensor 6 outputting an output signal according to a direction of a magnetic field to be generated from the multipolar magnet 5; an angle calculating section 13 calculating the displacement angle of the detection object based on the output signal; and a correcting section 14 correcting the displacement angle to be calculated by the angle calculating section 13 so that an ideal straight line conforms to an angle error to be expressed as a two-cycle sine wave with respect to the ideal straight line, within an angle corresponding to pitch intervals of the same pole of the multipolar magnet 5, the ideal straight line indicating ideal relations between the direction of the magnetic field and an actual displacement angle of the steering shaft 2.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种以高精度检测检测对象的微小位移角的简单且廉价的微小角度检测传感器。解决方案：微小角度检测传感器设有：与转向轴2的圆周方向上的位移一致旋转的多极磁体5，并且在圆周方向以等间距交替磁化的N极和S极方向; 磁传感器6，根据从多极磁铁5产生的磁场方向输出输出信号; 角度计算部13，基于输出信号计算检测对象的位移角; 以及校正部分14，其校正由角度计算部分13计算的位移角度，使得理想直线符合相对于理想直线表示为双周期正弦波的角度误差，角度误差在角度对应于多极磁体5的相同极点的间距间隔，理想直线表示磁场方向与转向轴2的实际位移角之间的理想关系。版权所有（C）2011，JPO＆INPIT

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