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公开(公告)号：US09470554B2
公开(公告)日：2016-10-18
申请号：US13953074
申请日：2013-07-29
Applicant: DENSO CORPORATION
Inventor： Takamitsu Kubota , Akitoshi Mizutani , Yoshiyuki Kono
IPC: G01R33/02 , G01D5/12 , G01D21/00 , G01D18/00 , G01B7/00 , G06F17/40 , G06F19/00 , G01D5/14 , G01D3/036
CPC classification number: G01D5/145 , G01B7/00 , G01D3/0365 , G01D5/12 , G01D18/00 , G01D21/00 , G01R33/02 , G06F17/40 , G06F19/00
Abstract: A position detector includes a Hall element that detects a magnetic flux density and a temperature detection element that detects the temperature of the Hall element. In a rotation angle calculation process, a temperature correction value a is calculated by substituting a detection temperature t of the temperature detection element and a reference maximum voltage V0 at a reference temperature t0 for a=V0×k (t−t0). Next, a correction maximum voltage Vt is calculated by substituting the temperature correction value a for a temperature characteristic formula of Vt=V0+a. Further, a rotation angle θ of a magnet relative to the Hall element is calculated by substituting an output voltage VH of the Hall element and the correction maximum voltage Vt for θ=sin−1 (VH/Vt). Since the correction maximum voltage Vt is corrected according to the temperature, the rotation angle is accurately detected.
Abstract translation: 位置检测器包括检测磁通密度的霍尔元件和检测霍尔元件的温度的温度检测元件。 在旋转角度计算处理中，通过将温度检测元件的检测温度t和基准温度t0的基准最大电压V0代入a = V0×k（t-t0）来计算温度校正值a。 接下来，通过将温度校正值a替换为Vt = V0 + a的温度特性公式来计算校正最大电压Vt。 此外，通过将霍尔元件的输出电压VH和θ= sin-1（VH / Vt）的校正最大电压Vt代入，来计算磁体相对于霍尔元件的旋转角度θ。 由于根据温度校正校正最大电压Vt，因此精确地检测旋转角度。
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公开(公告)号：US09035645B2
公开(公告)日：2015-05-19
申请号：US13663789
申请日：2012-10-30
Applicant: DENSO CORPORATION
Inventor： Akitoshi Mizutani , Naoaki Kouno
CPC classification number: G01B7/003
Abstract: A first and a second magnet are provided on a movable member so as to oppose to each other across a virtual plane. Each magnet is magnetized in a direction perpendicular to the movable member, so that the same magnetic poles of the magnets are opposed to each other. A hall IC is provided at a position more remote from the movable member than the magnets so as to be movable on the virtual plane relative to the movable member. A Y-parallel area is formed in a space equally distanced from the first and the second magnets, in which magnetic fields of the first and the second magnet rebel against each other, so that directions of the magnetic fields are so made to be in parallel to a stroke direction of the movable member. Robustness for a position gap between the magnets and the hall IC is improved.
Abstract translation: 第一和第二磁体设置在可移动部件上，以跨越虚拟平面彼此相对。 每个磁体在垂直于可动件的方向上被磁化，使得磁体的相同的磁极彼此相对。 霍尔IC设置在比磁体更远离可移动部件的位置，以能够相对于可移动部件在虚拟平面上移动。 在与第一和第二磁体等距离的空间中形成Y平行区域，其中第一和第二磁体的磁场相互反抗，使得磁场的方向成平行 到可移动部件的冲程方向。 提高了磁体与霍尔IC之间的位置间隙的鲁棒性。
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公开(公告)号：US08957670B2
公开(公告)日：2015-02-17
申请号：US13856830
申请日：2013-04-04
Applicant: Denso Corporation
Inventor： Akitoshi Mizutani , Hitomi Honda , Yoshiyuki Kono
Abstract: A stroke amount detection device includes a yoke, a magnetic flux generation section, and a magnetism detection section. The yoke has a protruding section that protrudes to outside the yoke. The magnetic flux generation section is located in the yoke. The magnetism detection section is disposed between the magnetic flux generation section and the protruding section. The magnetism detection section is disposed at a fixed position with respect to the magnetic flux generation section. The magnetism detection section outputs a signal in accordance with a magnetic flux density generated due to a relative movement of the yoke with respect to the magnetism detection section.
Abstract translation: 行程量检测装置包括轭，磁通产生部和磁检测部。 轭具有突出到轭的外部的突出部分。 磁通量产生部位于磁轭中。 磁检测部设置在磁通产生部和突出部之间。 磁检测部相对于磁通产生部配置在固定位置。 磁检测部根据磁轭相对于磁检测部的相对运动而产生的磁通密度输出信号。
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公开(公告)号：US10115889B2
公开(公告)日：2018-10-30
申请号：US15603733
申请日：2017-05-24
Applicant: DENSO CORPORATION , TDK-MICRONAS GMBH
Inventor： Toshiyuki Koumori , Yoshiyuki Kono , Tomoyuki Takiguchi , Yoshinori Inuzuka , Akitoshi Mizutani , Seiji Nishimoto , Camillo Pilla
Abstract: A method for manufacturing semiconductor devices is provided. The method includes bonding a semiconductor element to a first surface of a planar lead frame, clamping a partial area of the lead frame to hold the lead frame and the semiconductor element in molding dies, and covering at least a part of the lead frame and the semiconductor element with a resin member by resin molding which fills the molding dies with resin. A thin-walled portion having a relative small thickness is previously formed on a shortest virtual line connecting a clamp area of the lead frame to an area where the semiconductor element is bonded.
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公开(公告)号：US09605977B2
公开(公告)日：2017-03-28
申请号：US14922375
申请日：2015-10-26
Applicant: DENSO CORPORATION
Inventor： Hitomi Honda , Akitoshi Mizutani , Yoshiyuki Kono
CPC classification number: G01D5/145
Abstract: A first opposing surface of a first yoke has a constant radius of curvature and has a center of curvature that lies on a center of rotation. At least two rotation direction end portions of a second opposing surface of the second yoke are formed such that toward either end in the rotation direction, the two end portions are increasingly spaced away from a reference curved surface in a direction away from the first opposing surface. The first and second opposing surfaces face each other to define a gap thereinbetween. Accordingly, the gap between the yokes is wider at its end portions than at its center, and increases in magnetic flux density flowing through a Hall element is curtailed at the end portions of the gap. Further, it is not necessary for the first yoke to protrude outward when widening the end portions of the gap.
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Patent Agency Ranking
公开(公告)号：US09488461B2
公开(公告)日：2016-11-08
申请号：US13904409
申请日：2013-05-29
Applicant: DENSO CORPORATION
Inventor： Hitomi Honda , Akitoshi Mizutani , Yoshiyuki Kono
Abstract: A rotation angle detection device includes a magnetic field generation section, a yoke, and a magnetism detection section. The magnetic field generation section has a first end portion and a second end portion. The yoke has such a tube shape that the magnetic field generation section and a rotation axis of a rotating body are located therein. The yoke has a gap at a part in a circumferential direction in a cross section perpendicular to the rotation axis. The magnetism detection section is disposed in the gap and outputs an electrical signal in accordance with a magnetic field strength in the gap. The magnetic field generation section is disposed in such a manner that a magnetic force line passing through the magnetic field generation section passes through the rotation axis regardless of the rotation angle of the rotating body and the rotation axis passes through the first end portion.
Abstract translation: 旋转角度检测装置包括磁场产生部，磁轭和磁性检测部。 磁场产生部具有第一端部和第二端部。 磁轭具有使磁场产生部分和旋转体的旋转轴线位于其中的管状。 轭在与旋转轴垂直的截面中在圆周方向的一部分具有间隙。 磁性检测部设置在间隙中，并根据间隙中的磁场强度输出电信号。 磁场产生部分以这样的方式设置，使得通过磁场产生部分的磁力线不管旋转体的旋转角度如何都通过旋转轴线，旋转轴线穿过第一端部。
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公开(公告)号：US09267817B2
公开(公告)日：2016-02-23
申请号：US13966825
申请日：2013-08-14
Applicant: DENSO CORPORATION
Inventor： Hitomi Honda , Akitoshi Mizutani , Yoshiyuki Kono
Abstract: A rotation angle detection device has a first yoke, an inside surface of which is formed of a first concave curved surface and a second concave curved surface, and a second yoke, an inside surface of which is formed of a third concave curved surface and a fourth concave curved surface. Each concave curved surface does not extend in a second direction but extends toward a first flat surface or a second flat surface in an inclined manner. The first flat surface and the second flat surface face each other sandwiching a Hall element therebetween and are parallel to each other. The magnetic flux, which leaks from the first yoke into an inside space and reaches the second yoke, flows in the second direction over a wider area around the Hall element.
Abstract translation: 旋转角度检测装置具有第一磁轭，其内表面由第一凹曲面和第二凹曲面形成，第二磁轭的内表面由第三凹曲面和 第四凹曲面。 每个凹曲面不在第二方向上延伸，而是以倾斜的方式朝着第一平坦表面或第二平坦表面延伸。 第一平面和第二平面彼此面对，在其间夹着霍尔元件并且彼此平行。 从第一磁轭泄漏到内部空间并到达第二磁轭的磁通量在第二方向上在霍尔元件周围的较宽区域上流动。
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公开(公告)号：US11286893B2
公开(公告)日：2022-03-29
申请号：US16424567
申请日：2019-05-29
Applicant: DENSO CORPORATION
Inventor： Akitoshi Mizutani , Yasushi Goka
Abstract: A physical quantity measuring device is configured to measure a physical quantity of a fluid. The physical quantity measuring device includes: at least two humidity detection parts configured to output a humidity signal corresponding to a humidity of the fluid; and an abnormality determination part configured to determine that an abnormality has occurred in the humidity detection parts in response to that a difference between the humidity signals obtained from the two humidity detection parts exceeds an abnormality determination threshold.
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公开(公告)号：US10830611B2
公开(公告)日：2020-11-10
申请号：US15755234
申请日：2016-08-08
Applicant: DENSO CORPORATION
Inventor： Seiji Nishimoto , Tomoyuki Takiguchi , Yoshiyuki Kono , Akitoshi Mizutani
Abstract: A magnetic field detection device includes an IC package, a terminal, a resin mold member. The IC package includes a magnetism detection element, a lead frame located on a first side of the magnetism detection element, and a resin member covering the magnetism detection element and the lead frame. The resin mold member includes a base portion and a head portion. The head portion includes a thickest portion. An outer wall surface of the thickest portion located on a second side of the magnetism detection element is a detection reference surface. An element corresponding surface that is an outer wall surface of the IC package located on the second side is exposed to an outside of resin mold member or covered with a detection side thin portion thinner than a thickness from the element corresponding surface to the detection side reference surface.
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公开(公告)号：US10732008B2
公开(公告)日：2020-08-04
申请号：US15441316
申请日：2017-02-24
Applicant: DENSO CORPORATION
Inventor： Tomoyuki Takiguchi , Yoshiyuki Kono , Akitoshi Mizutani
Abstract: The present disclosure provides a rotational angle detecting device. An IC substrate has a flat surface extending along a rotational axis of a throttle valve. Yokes forms, together with the magnets, a closed magnetic circuit. A first Hall element outputs a first signal according to the magnetic flux density in a first direction along the flat surface. A second Hall element outputs a second signal according to the magnetic flux density in a second direction intersecting the flat surface. The first and second Hall elements are positioned within a region that is surrounded by the magnets and the yoke and that is between an edge surface and an edge surface.
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