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公开(公告)号：US20240324467A1
公开(公告)日：2024-09-26
申请号：US18610559
申请日：2024-03-20
申请人： Proterial, Ltd.
发明人： Akitoshi FUJIMORI , Takashi ONIMOTO
CPC分类号： H10N35/101 , H10N35/80
摘要： A magnetostrictive torque sensor that is configured to be attached around a rotating shaft exhibiting a magnetostrictive effect and detects torque transmitted by the rotating shaft. The magnetostrictive torque sensor is provided with a holder being composed of a resin and including a cylinder portion with a hollow cavity in the center through which the rotating shaft is inserted, and a flexible substrate that includes a detection portion on which a coil group including a combination of a plurality of detection coils aligned in a predetermined direction is formed by a wiring pattern, and a signal line portion on which a plurality of signal lines electrically connecting the coil group to an external device are formed by a wiring pattern. The flexible substrate is arranged in such a manner that the detection portion is wrapped around an outer circumference of the cylinder portion of the holder and held by the holder, and a portion of the signal line portion is led out of the holder.
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公开(公告)号：US20230280219A1
公开(公告)日：2023-09-07
申请号：US18176052
申请日：2023-02-28
申请人： NSK LTD. , Proterial, Ltd.
发明人： Masahiro KOBAYASHI , Kota FUKUDA , Hisayoshi FUKUI , Takahiro ODERA , Akitoshi FUJIMORI , Takashi ONIMOTO , Yiming JIN
摘要： The torque measuring device includes: a casing made of a magnetic metal; a rotating shaft rotatably arranged inside the casing and having a magnetostrictive effect section whose magnetic permeability changes according to torque to be transmitted; and a torque sensor arranged around the magnetostrictive effect section and supported by the casing, the torque sensor including a coil unit formed in a cylindrical shape using a flexible substrate having a detection coil that changes voltage in response to changes in the magnetic permeability of the magnetostrictive effect section, and a holder made of rubber or synthetic resin, covering an outer peripheral surface of the coil unit, and having a portion that protrudes from the coil unit on both sides in an axial direction; and the torque sensor supported by the casing with an outer peripheral surface of the holder fitted into an inner peripheral surface of the casing.
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3.发明公开公开(公告)号：US20240247987A1
公开(公告)日：2024-07-25
申请号：US18394255
申请日：2023-12-22
申请人： Proterial, Ltd.
发明人： Takashi ONIMOTO , Kei KAWANO , Akitoshi FUJIMORI
IPC分类号： G01L3/10
CPC分类号： G01L3/102
摘要： A magnetostrictive torque sensor that is configured to be attached around a rotating shaft exhibiting a magnetostrictive effect and detects torque transmitted by the rotating shaft in a predetermined operating temperature range. The magnetostrictive torque sensor is provided with a molded resin body including a cylinder portion with a hollow cavity in a center through which the rotating shaft is inserted, a flexible substrate that is wrapped around an outer circumference of the cylinder portion of the molded resin body and includes a plurality of detection coils composed of a wiring pattern, a cylindrical magnetic ring that houses the flexible substrate between the magnetic ring and the cylinder portion, and a filler composed of a curable resin filled between the cylinder portion, the flexible substrate, and the magnetic ring. A linear expansion coefficient of the molded resin body is higher than a linear expansion coefficient of the magnetic ring, and the filler is cured in a state in which temperatures of the cylinder portion, the flexible substrate, and the magnetic ring are elevated to higher than an upper limit temperature of the operating temperature range.
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公开(公告)号：US20240319029A1
公开(公告)日：2024-09-26
申请号：US18608325
申请日：2024-03-18
申请人： Proterial, Ltd. , NSK Ltd.
IPC分类号： G01L3/10
CPC分类号： G01L3/102
摘要： A magnetostrictive torque sensor is configured to be attached around a rotating shaft exhibiting a magnetostrictive effect and detects torque transmitted by the rotating shaft. The magnetostrictive torque sensor includes a holder being composed of a resin and including a cylinder portion with a hollow cavity in a center through which the rotating shaft is inserted, a flexible substrate that includes a detection portion on which a coil group composed of a combination of a plurality of detection coils aligned in a predetermined direction is formed by a wiring pattern, and a signal line portion on which a plurality of signal lines electrically connecting the coil group to an external device are formed by a wiring pattern, and a cylindrical magnetic ring being composed of a soft magnetic material and being arranged around an outer circumference of the cylinder portion of the holder. The flexible substrate is arranged in such a manner that the detection portion is curved and located between the cylinder portion of the holder and the magnetic ring, and a portion of the signal line portion is led out of the holder. The holder includes an annular wall surrounding an outer circumference of one axial end of the magnetic ring. The magnetic ring includes a retention hole that opens on an outer circumferential surface facing an inner circumferential surface of the annular wall. The holder and the magnetic ring are fixed by a shaft-shaped fastener that penetrates the annular wall and is inserted into the retention hole of the magnetic ring.
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