公开(公告)号：US07084620B2

公开(公告)日：2006-08-01

申请号：US10418099

申请日：2003-04-18

申请人： Shigeki Tsujii ,  Takuji Nada ,  Naoki Hiraoka

发明人： Shigeki Tsujii ,  Takuji Nada ,  Naoki Hiraoka

IPC分类号： G01B7/14 ,  G01B7/30 ,  G01R33/06 ,  H01L43/06

CPC分类号： G01D5/147 ,  G01D11/245 ,  G01P1/026

摘要： A magnetic detection apparatus includes a first block, a second block, and an exterior resin covering the first block and the second block. The first block includes a magnetoresistive element for detecting a change in a magnetic field that varies in accordance with movement of a rotating member, electronic components forming a protection circuit against external noise, a first lead frame electrically connected with the electronic components, and a first base in which the electronic components, the first lead frame and the magnetoresistive element are sealed with a resin. The second block includes a magnet arranged in opposition to an object to be detected for generating a magnetic field, a second lead frame electrically connected with the first lead frame and having a connector terminal for outputting an output signal of the magnetoresistive element to an external member, and a second base in which the second lead frame is sealed with a resin.

摘要翻译： 磁检测装置包括第一块，第二块和覆盖第一块和第二块的外部树脂。 第一块包括用于检测根据旋转构件的移动而变化的磁场变化的磁阻元件，形成防止外部噪声的保护电路的电子部件，与电子部件电连接的第一引线框架，以及第一 其中电子部件，第一引线框架和磁阻元件用树脂密封在其中。 第二块包括与要被检测的物体相对地布置以产生磁场的磁体;与第一引线框架电连接并具有用于将磁阻元件的输出信号输出到外部构件的连接器端子的第二引线框架 以及第二基座，其中第二引线框架用树脂密封。

公开(公告)号：US06326779B1

公开(公告)日：2001-12-04

申请号：US09172079

申请日：1998-10-14

申请人： Izuru Shinjo ,  Takuji Nada ,  Yasuyoshi Hatazawa ,  Naoki Hiraoka

发明人： Izuru Shinjo ,  Takuji Nada ,  Yasuyoshi Hatazawa ,  Naoki Hiraoka

IPC分类号： G01B730

CPC分类号： G01R33/09

摘要： A magnetic detector having high productivity is provided by producing a connector and a base as separate units, electrically interconnecting them, forming a cut-out portion in a press-in portion of the base, and injecting a thermosetting resin adhesive into a whole case. The case also has a recess portion that prevents excess injected resin from leaking to the outside of the case. The structure of the base also allows for easier injection of resin and simplified connection of the magnetic resistance element to the base.

摘要翻译： 通过制造连接器和基座作为分离单元，电连接它们，在基座的压入部分形成切口部分，并将热固性树脂粘合剂注入整个壳体中来提供高生产率的磁性检测器。 壳体还具有防止多余注入树脂泄漏到壳体外部的凹陷部分。 基座的结构还允许更容易地注入树脂并简化磁阻元件与基座的连接。

公开(公告)号：US06204662B1

公开(公告)日：2001-03-20

申请号：US09176427

申请日：1998-10-21

申请人： Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Takuji Nada ,  Masahiro Yokotani

发明人： Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Takuji Nada ,  Masahiro Yokotani

IPC分类号： G01R3309

CPC分类号： B82Y25/00 ,  G01P3/487 ,  G01R33/093

摘要： A magnetic field sensing element comprising a giant magnetic resistance element formed on a substrate for detecting a change in a magnetic field, an integrated circuit formed on the substrate for carrying out predetermined arithmetic processing based on a change in the magnetic field, and an input side protective resistor and an output side protective resistor provided on the input side and the output side, respectively, of the integrated circuit, wherein the metal film from which the input side resistor and the output side resistor are formed is identical to the metal film from which the integrated circuit is formed.

摘要翻译： 一种磁场感测元件，包括形成在用于检测磁场变化的基板上的巨磁阻元件，形成在基板上的集成电路，用于基于磁场的变化执行预定的运算处理，以及输入侧 保护电阻和输出侧保护电阻分别设置在集成电路的输入侧和输出侧，其中形成输入侧电阻和输出侧电阻的金属膜与金属膜相同，金属膜与 形成集成电路。

公开(公告)号：US06528992B2

公开(公告)日：2003-03-04

申请号：US09168669

申请日：1998-10-09

申请人： Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Takuji Nada ,  Masahiro Yokotani

发明人： Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Takuji Nada ,  Masahiro Yokotani

IPC分类号： G01B730

CPC分类号： G01R33/09

摘要： A magnetic detector for detecting a rotational angle of a gear-like rotary member of magnet material generates twice as many pulses as the number of projected or recessed portions of the rotary member of magnetic material. The magnetic detector comprises a magnet for generating a magnetic field, a rotary member of magnetic material disposed with a predetermined gap retaining relative to the magnet, and an magnetic field sensing device for detecting changes in the magnetic field by movement of the moving member of magnetic material. The magnetic field sensing device is disposed relative to the magnet so that a center axis of the magnetic field sensing device is aligned with a center axis of the magnet wherein a magnetic field acting on the magnetic field sensing device changes from positive to negative and from negative to positive with the movement of the moving member of magnetic material.

摘要翻译： 用于检测磁体材料的齿轮状旋转构件的旋转角度的磁检测器产生与磁性材料的旋转构件的突出或凹入部分的数量相同的脉冲数量的两倍。 磁检测器包括用于产生磁场的磁体，以相对于磁体保持预定间隙的方式设置的磁性材料的旋转部件，以及用于通过磁性移动部件的移动来检测磁场变化的磁场检测装置 材料。 磁场感测装置相对于磁体设置，使得磁场感测装置的中心轴线与磁体的中心轴线对齐，其中作用在磁场感测装置上的磁场从正向负变为负 随着磁性材料的移动构件的移动而呈正。

公开(公告)号：US06177793B1

公开(公告)日：2001-01-23

申请号：US09163980

申请日：1998-09-30

申请人： Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Takuji Nada ,  Masahiro Yokotani

发明人： Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Takuji Nada ,  Masahiro Yokotani

IPC分类号： G01B730

CPC分类号： G01R33/09

摘要： A magnetic detector D is disclosed which can perform precise detection even when a moving member of magnetic material is rotating at a very low speed, and can output a signal corresponding to recessed and projected portions of the moving member of magnetic material when the power is turned on and when the rotary member of magnetic material is stopped. The magnetic detector includes a rotary member of magnetic material, a detecting unit for detecting a displacement of the rotary member of magnetic material, an AC coupling circuit for removing a DC component from an output signal of the detecting unit, a comparison circuit for converting an output signal of the AC coupling circuit into a binary signal, an output circuit for outputting an output signal of the comparison circuit, and a variable resistor for setting a comparison level for the comparison circuit to a level between two different signal levels.

摘要翻译： 磁性检测器D被公开，即使当磁性材料的移动部件以非常低的速度旋转时也能进行精确的检测，并且当电力转动时，可以输出对应于磁性材料的移动部件的凹入和突出部分的信号 当磁性材料的旋转构件停止时。 磁检测器包括磁性材料的旋转部件，用于检测磁性材料的旋转部件的位移的检测单元，用于从检测单元的输出信号中去除直流分量的AC耦合电路，用于转换 AC耦合电路的输出信号转换为二进制信号，输出电路，输出比较电路的输出信号，以及可变电阻，用于将比较电路的比较电平设定为两个不同信号电平之间的电平。

公开(公告)号：US06577122B2

公开(公告)日：2003-06-10

申请号：US09902721

申请日：2001-07-12

申请人： Masahiro Yokotani ,  Izuru Shinjo ,  Takuji Nada ,  Tatsuya Fukami

发明人： Masahiro Yokotani ,  Izuru Shinjo ,  Takuji Nada ,  Tatsuya Fukami

IPC分类号： G01B730

CPC分类号： G01D5/147 ,  G01B7/003

摘要： A magnetic detection apparatus is able to ensure good performance in detecting the position of an detected portion even with a shift or displacement in the position of a magnetoelectric conversion element. The magnetic detection apparatus includes at least one magnetoelectric conversion element 15 disposed to face one of teeth 12a and grooves 12b of a rotating member 11, a magnet 14 with a direction of magnetization thereof oriented in a direction perpendicular to a radial direction of the rotating member 11 in which the magnet 14 faces the rotating member 11, and a magnetic guide 21 having a first pole projection 21a and a second pole projection 21b formed in a spaced apart relation with respect to each other in a radial direction of the magnetic moving object in which the magnetic guide 21 faces one of the teeth 21a and the grooves 21b of the rotating member 11. The at least one magnetoelectric conversion element is disposed between the first and second pole projections when viewed from a direction perpendicular to the radial direction of the magnetic moving object in which the magnetic guide faces one of the teeth 21a and the grooves 21b of the rotating member 11.

摘要翻译： 磁性检测装置即使在磁电转换元件的位置上的位移偏移也能够确保检测到的部分的位置的良好性能。 磁检测装置包括至少一个面向旋转部件11的齿12a和凹槽12b之一的磁电转换元件15，磁化方向的磁体14沿与旋转部件11的径向垂直的方向 磁体14与旋转构件11对置的磁铁11，以及具有第一磁极突起21a和第二磁极突起21b的导磁体21，该第一磁极突起21a和第二磁极突起21b沿着磁性移动物体的径向彼此间隔开地形成 其中磁导体21面向旋转构件11的齿21a和凹槽21b中的一个。当从与磁体的径向方向垂直的方向观察时，至少一个磁电转换元件设置在第一和第二极突起之间 磁导体面对旋转构件11的齿21a和凹槽21b之一的移动体。

公开(公告)号：US06194893B1

公开(公告)日：2001-02-27

申请号：US09162887

申请日：1998-09-30

申请人： Masahiro Yokotani ,  Yasuyoshi Hatazawa ,  Izuru Shinjo ,  Takuji Nada

发明人： Masahiro Yokotani ,  Yasuyoshi Hatazawa ,  Izuru Shinjo ,  Takuji Nada

IPC分类号： G01B714

CPC分类号： G01R33/09

摘要： A magnetic detector is disclosed with a power-on function which can essentially eliminate temperature characteristics of a magnetic field sensing device and improve edge detecting accuracy of alternately projected and recessed portions of a moving member of magnetic material. The magnetic detector comprises a magnet for generating a magnetic field, a rotary member of magnetic material disposed with a predetermined gap remaining relative to the magnet and having alternately projected and recessed portions to change the magnetic field generated by the magnet, a magnetoresistive device comprising a plurality of magnetic field sensing elements and detecting changes in the magnetic field by movement of the rotary member of magnetic material, and a magnetic guide for adjusting changes in the magnetic field caused by the alternately projected and recessed portions of the rotary member of magnetic material.

摘要翻译： 公开了具有开机功能的磁性检测器，其基本上可以消除磁场感测装置的温度特性，并提高磁性材料的移动部件的交替投影和凹陷部分的边缘检测精度。 磁检测器包括用于产生磁场的磁体，磁性材料的旋转构件，其相对于磁体保留预定间隙，并且具有交替地投影和凹陷部分以改变由磁体产生的磁场;磁阻装置，包括： 多个磁场感测元件，并且通过磁性材料的旋转构件的移动来检测磁场的变化，以及用于调整由磁性材料的旋转构件的交替突出和凹陷部分引起的磁场变化的磁性引导件。

公开(公告)号：US6111403A

公开(公告)日：2000-08-29

申请号：US161675

申请日：1998-09-29

申请人： Masahiro Yokotani ,  Yasuyoshi Hatazawa ,  Izuru Shinjo ,  Takuji Nada

发明人： Masahiro Yokotani ,  Yasuyoshi Hatazawa ,  Izuru Shinjo ,  Takuji Nada

IPC分类号： G01B7/00 ,  G01B7/30 ,  G01D5/245 ,  G01R33/09 ,  G01B7/14

CPC分类号： B82Y25/00 ,  G01R33/093

摘要： A magnetic detector is disclosed with a power-on function which can essentially eliminate temperature characteristics of a magnetic field sensing device and improve edge detecting accuracy of alternately projected and recessed portions of a moving member of magnetic material. The magnetic detector comprises a magnet for generating a magnetic field, a rotary member of magnetic material disposed with a predetermined gap remaining relative to the magnet and having alternately projected and recessed portions to change the magnetic field generated by the magnet, and a magnetoresistive device comprising a plurality of magnetic field sensing elements and detecting changes in the magnetic field by movement of the rotary member of magnetic material. The magnetic flux crosses the plurality of magnetic field sensing elements at a first predetermined angle when the recessed portion of the moving member of magnetic material is opposed to the magnetic field sensing device, and the magnetic flux crosses the plurality of magnetic field sensing elements at a second predetermined angle when the projected portion of the moving member of magnetic material is opposed to the magnetic field sensing device. The first and second predetermined angles are symmetrical with respect to a direction vertical to a plane in which the plurality of magnetic field sensing elements are arranged.

摘要翻译： 公开了具有开机功能的磁性检测器，其基本上可以消除磁场感测装置的温度特性，并提高磁性材料的移动部件的交替投影和凹陷部分的边缘检测精度。 磁检测器包括用于产生磁场的磁体，磁性材料的旋转构件，以相对于磁体残留预定间隙的方式设置，并且具有交替地投影和凹陷部分以改变由磁体产生的磁场;以及磁阻装置，包括 多个磁场感测元件，并且通过磁性材料的旋转构件的移动来检测磁场的变化。 当磁性材料的移动构件的凹部与磁场感测装置相对时，磁通量以第一预定角度与多个磁场感测元件交叉，并且磁通量以一定的角度与多个磁场感测元件交叉 当磁性材料的移动部件的突出部分与磁场感测装置相对时，是第二预定角度。 第一和第二预定角度相对于垂直于布置有多个磁场感测元件的平面的方向对称。