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Patent Agency Ranking
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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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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4.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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