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公开(公告)号：US20220003573A1
公开(公告)日：2022-01-06
申请号：US17222532
申请日：2021-04-05
IPC分类号： G01D5/14
摘要： An angle detection apparatus includes a magnetic sensing element, a magnetic field generator, and a yoke. The magnetic field generator is rotatable around a rotation axis with respect to the magnetic sensing element and generates a magnetic field. The yoke is disposed in a magnetic-field influence region and is rotatable together with the magnetic field generator. The magnetic-field influence region is a region that lies between the magnetic field generator and the magnetic sensing element in a rotation axis direction along the rotation axis, and that is to be influenced by the magnetic field.
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公开(公告)号：US20180011282A1
公开(公告)日：2018-01-11
申请号：US15642090
申请日：2017-07-05
申请人： TDK CORPORATION
发明人： Toshiki MARUYAMA , Naoki YUSA , Seiji FUKUOKA , Masahiro HOSOKAWA , Mio HAMASHIMA , Hiroshi TOJO , Mitsunao HOMMA , Takuto HORII , Atsushi EZAWA , Tatsuya TAKI
摘要： A lens drive unit that offers enhanced reliability in connection between an actuator electrode and an electric wire is provided. In the lens drive unit, an actuator has a weight housed in an holding portion of a base member and is thereby fixed in the base member. Electrodes on a lateral surface of the weight directly contact respective terminal electrodes on an inner lateral surface of the holding portion, so that an electrical connection is established therebetween. The arrangement enhances reliability in connection between the actuator electrodes and the terminal electrodes.
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公开(公告)号：US20130169267A1
公开(公告)日：2013-07-04
申请号：US13722288
申请日：2012-12-20
申请人： TDK Corporation
IPC分类号： G01R15/14
CPC分类号： G01R15/14 , G01R15/207
摘要： A current sensor has first and second magnetic bodies for magnetic shielding opposed to each other, and a bus bar and a Hall IC disposed between the magnetic bodies. The magnetic bodies are magnetized in directions opposite to each other when a current flows through the bus bar. The Hall IC is disposed at a position at which a magnetic field applied to the Hall IC is weakened by magnetization of the first magnetic body and by magnetization of the second magnetic body.
摘要翻译： 电流传感器具有用于彼此相对的磁屏蔽的第一和第二磁体，以及布置在磁体之间的汇流条和霍尔IC。 当电流流过母线时，磁体在彼此相反的方向上被磁化。 霍尔IC设置在施加到霍尔IC的磁场被第一磁性体的磁化和第二磁性体的磁化所削弱的位置处。
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公开(公告)号：US20170284827A1
公开(公告)日：2017-10-05
申请号：US15511456
申请日：2016-04-13
申请人： TDK CORPORATION
IPC分类号： G01D5/12
摘要： A position detecting device includes a first bias magnet and a second bias magnet and a detecting element configured to detect a direction of a magnetic field generated by the first magnet and the second magnet. The first magnet and the second magnet are disposed with magnetic poles thereof having the same polarity arranged opposing each other. The direction of the magnetic field detected by the detecting element changes when an object to be detected D moves in an opposing direction between the first magnet and the second magnet.
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公开(公告)号：US20200240762A1
公开(公告)日：2020-07-30
申请号：US16744630
申请日：2020-01-16
申请人： TDK CORPORATION
发明人： Hiroyuki HIRANO , Teiichiro OKA , Seiji FUKUOKA
摘要： A position detection apparatus includes a magnetic unit and a sensor. The magnetic unit includes a magnetic member and a retainer. The magnetic member includes a magnet and a first magnetic yoke. The magnet extends in an axial direction and has a cross-section orthogonal to the axial direction, and a first maximum outer diameter in a radial direction orthogonal to the axial direction. The cross-section has a substantially constant area in the axial direction. The first magnetic yoke is disposed adjacent to the magnet in the axial direction and has a second maximum outer diameter in the radial direction. The second maximum outer diameter is greater than the first maximum outer diameter. The retainer extends in the axial direction and retains the magnetic member. The sensor detects a magnetic field that changes in association with a movement of the magnetic unit along the axial direction.
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公开(公告)号：US20180011281A1
公开(公告)日：2018-01-11
申请号：US15640671
申请日：2017-07-03
申请人： TDK CORPORATION
发明人： Masahiro HOSOKAWA , Naoki YUSA , Seiji FUKUOKA , Mio HAMASHIMA , Toshiki MARUYAMA , Hiroshi TOJO , Mitsunao HOMMA , Takuto HORII , Atsushi EZAWA , Tatsuya TAKI
摘要： A lens drive unit that prevents an actuator from being inclined is provided. In the lens drive unit, when a lens frame is displaced in a direction orthogonal to a direction in which the actuator extends and contracts with respect to a base member by, for example, impact from an outside of the lens drive unit, a drive shaft of the actuator abuts on a first lateral wall and a column, so that the actuator is prevented from being inclined with respect to the base member.
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