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公开(公告)号：US20250067550A1
公开(公告)日：2025-02-27
申请号：US18805854
申请日：2024-08-15
Applicant: TDK Corporation
Inventor： Hiroyuki HIRANO , Teiichiro OKA , Ryoichi MENJU , Makoto TAKAHASHI
Abstract: When straight lines that are parallel to first to fourth long axes A1 to A4, that have the origin as their ends, and that pass through the first to fourth quadrants are defined as first to fourth imaginary lines B1 to B4, and the angles that the first to fourth imaginary lines make counterclockwise with respect to the boundary line between the first and fourth quadrants are θ1 to θ4, respectively, θ1 is greater than or equal to 0 degrees and less than or equal to 90 degrees, θ2 is greater than or equal to 90 degrees and less than or equal to 180 degrees, θ3 is greater than or equal to 180 degrees and less than or equal to 270 degrees, and θ4 is greater than or equal to 270 degrees and less than or equal to 360 degrees.
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公开(公告)号：US20220244325A1
公开(公告)日：2022-08-04
申请号：US17517341
申请日：2021-11-02
Applicant: TDK CORPORATION
Inventor： Hiroyuki HIRANO , Makoto TAKAHASHI , Ryoichi MENJU
Abstract: A current sensor includes a magnetic detector and a first soft magnetic body. The magnetic detector is configured to be subjected to a magnetic flux that is to be generated when a current flows through a conductor along a first axis direction, the magnetic flux being in a second axis direction. The first soft magnetic body includes a first portion, a second portion disposed between the conductor and the first portion, and a third portion magnetically coupling the first portion and the second portion to each other. The first soft magnetic body is spaced from both of the conductor and the magnetic detector, with the first portion, the second portion, and the third portion surrounding the magnetic detector along a first plane orthogonal to the second axis direction.
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公开(公告)号：US20210293858A1
公开(公告)日：2021-09-23
申请号：US17203857
申请日：2021-03-17
Applicant: TDK Corporation
Inventor： Makoto TAKAHASHI
Abstract: A current sensor includes a magnetic detection unit capable of detecting the magnetism, a first magnetic shield and a second magnetic shield. The first magnetic shield includes a first shield section and two second shield sections respectively connected in the vicinity of the two ends thereof. The second magnetic shield includes a third shield section and two fourth shield sections respectively connected in the vicinity of the two ends thereof. Between the first shield section and the third shield section is a conductor placement region, and the magnetic detection unit is positioned between the first shield section and the conductor placement region and is provided at a magnetic field canceling position where the magnetic field in the second direction is substantially zero at non-energized times after a prescribed current has flowed in the conductor, in relationship to the length of the two fourth shield sections along the third direction.
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公开(公告)号：US20190271601A1
公开(公告)日：2019-09-05
申请号：US16224937
申请日：2018-12-19
Applicant: TDK Corporation
Inventor： Teiichiro OKA , Hiroyuki HIRANO , Mikio SUMIYOSHI , Makoto TAKAHASHI
Abstract: A sensor is provided with a magnetic detection element that can output an output voltage within a predetermined voltage range according to a magnetic field intensity, an output voltage fixing part that can fix a voltage value of the output voltage to a voltage value outside the voltage range, and a drive voltage output part that can output a drive voltage for driving the output voltage fixing part. The drive voltage fixing part outputs the drive voltage to the output voltage fixing part when the ambient temperature of the drive voltage output part exceeds a predetermined threshold, and when triggered by input of the drive voltage, the output voltage fixing part fixes the voltage value of the output voltage to a voltage value outside the voltage range.
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公开(公告)号：US20190187224A1
公开(公告)日：2019-06-20
申请号：US16221725
申请日：2018-12-17
Applicant: TDK Corporation
Inventor： Teiichiro OKA , Hiroyuki HIRANO , Mikio SUMIYOSHI , Makoto TAKAHASHI
Abstract: A sensor intermediate part is provided with a physical quantity detection element that has a power source terminal, a ground terminal and an output terminal that outputs a desired output signal, where the physical quantity detection element is capable of adjusting properties of the output signal; a high-capacitance capacitor, which has at least a first terminal and a second terminal, and a jumper wire, one end of which is conducted to either the power source terminal or the second terminal and the other end of which is not conducted. The first terminal is conducted to the ground terminal, and the power source terminal and the second terminal are configured to be electrically connectable by the jumper wire.
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Patent Agency Ranking
公开(公告)号：US20230162906A1
公开(公告)日：2023-05-25
申请号：US17984020
申请日：2022-11-09
Applicant: TDK CORPORATION
Inventor： Kazunori ARIMITSU , Nobuo KITAJIMA , Kiichi FUJISAWA , Fuyuki MIURA , Takehiko NARISAWA , Makoto TAKAHASHI
IPC: H01F27/29
CPC classification number: H01F27/29
Abstract: An inductor 1 includes a coil 2 made of a flat wire, a terminal 4a including a wire connecting portion 42a connected to a lead portion 3a of the coil 2, a terminal 4b including a wire connecting portion 42b connected to a lead portion 3b of the coil 2, and a core 8 that covers the coil 2 together with the wire connecting portion 42a and the wire connecting portion 42b. The wire connecting portion 42a is positioned outside the lead portion 3a that is led out in a front-rear direction of the core 8, along a left-right direction of the core 8. The wire connecting portion 42b is positioned outside the lead portion 3b that is led out in the front-rear direction of the core 8, along the left-right direction of the core 8.
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7.发明公开公开(公告)号：US20240019270A1
公开(公告)日：2024-01-18
申请号：US18343952
申请日：2023-06-29
Applicant: TDK Corporation
Inventor： Teiichiro OKA , Ryoichi MENJU , Makoto TAKAHASHI , Hiroyuki HIRANO
IPC: G01D5/14
CPC classification number: G01D5/14
Abstract: A magnetic field detection device includes a magnetic field generation unit that generates a magnetic field, a magnetic field detection unit that detects the magnetic field, a first housing that has an accommodation unit that accommodates the magnetic field detection unit so that the magnetic field detection unit is exposed, and a second housing that movably accommodates a moving body. The strength or angle of the magnetic field generated from the magnetic field generation unit and applied to the magnetic field detection unit changes in accordance with movement of the moving body. The second housing has a mounting unit on which the first housing is mounted. The first housing is mounted on the mounting unit via a seal member that surrounds the magnetic field detection unit, so that the mounting unit is between the magnetic field detection unit and the moving body, and the inside of the accommodation unit is sealed by the seal member and the mounting unit.
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公开(公告)号：US20230047508A1
公开(公告)日：2023-02-16
申请号：US17967452
申请日：2022-10-17
Applicant: TDK Corporation
Inventor： Hiroyuki HIRANO , Makoto TAKAHASHI , Ryoichi MENJU
Abstract: A magnetic sensor for detecting magnetism generated from a conductor in which a current flows in a first direction includes a magnetic detection unit capable of detecting the magnetism, a magnetization core, and a magnetic shield. The magnetization core includes a first core section, which is substantially parallel to the first direction, and a second core section and third core section, which are each continuous from both end portions of the first core section in a second direction that is orthogonal to the first direction. The second core section and the third core section each extend from an end portion of the first core section to follow a third direction that is orthogonal to the first direction and the second direction. The magnetic detection unit has a sensitivity direction in the second direction and is positioned in a core gap sandwiched between the vicinity of the end portion of the second core section and the vicinity of the end portion of the third core section in the third direction. The magnetic shield includes a plate-shaped shield portion positioned to overlap the core gap when viewed along the third direction.
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公开(公告)号：US20240282509A1
公开(公告)日：2024-08-22
申请号：US18583137
申请日：2024-02-21
Applicant: TDK CORPORATION
Inventor： Kazunori ARIMITSU , Kiichi FUJISAWA , Masashi HAMA , Nobuo KITAJIMA , Makoto TAKAHASHI , Katsushi YASUHARA , Hironobu FURUKAWA , Ryuya KON
CPC classification number: H01F27/292 , H01F27/24
Abstract: A coil device has a wound portion, a leadout portion led out from the wound portion in a first direction, and an element body covering the wound portion and the leadout portion. A winding axis of the wound portion is perpendicular to a mounting facing surface of the element body and is displaced to a second direction opposite to the first direction with respect to a center of the element body. An outer circumferential surface of the wound portion is distorted so as to bulge outward in the first direction from the outer circumferential surface of the wound portion.
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公开(公告)号：US20220146598A1
公开(公告)日：2022-05-12
申请号：US17499172
申请日：2021-10-12
Applicant: TDK Corporation
Inventor： Hiroyuki HIRANO , Makoto TAKAHASHI , Ryoichi MENJU
Abstract: A magnetic sensor for detecting magnetism generated from a conductor in which a current flows in a first direction includes a magnetic detection unit capable of detecting the magnetism, a magnetization core, and a magnetic shield. The magnetization core includes a first core section, which is substantially parallel to the first direction, and a second core section and third core section, which are each continuous from both end portions of the first core section in a second direction that is orthogonal to the first direction. The second core section and the third core section each extend from an end portion of the first core section to follow a third direction that is orthogonal to the first direction and the second direction. The magnetic detection unit has a sensitivity direction in the second direction and is positioned in a core gap sandwiched between the vicinity of the end portion of the second core section and the vicinity of the end portion of the third core section in the third direction. The magnetic shield includes a plate-shaped shield portion positioned to overlap the core gap when viewed along the third direction.
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