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公开(公告)号:US20230096114A1
公开(公告)日:2023-03-30
申请号:US17943248
申请日:2022-09-13
摘要: A rotary reciprocating drive actuator includes: a movable body including a magnet fixed to a shaft portion; a fixing body including a plurality of magnetic poles, a first magnetic attraction member, and a second magnetic attraction member that are disposed to face an outer circumference of the magnet;, the plurality of magnetic poles including a plurality of coils, the first magnetic attraction member being configured to generate a first magnetic attraction force, the second magnetic attraction member being configured to generate a second magnetic attraction force, in which a magnetic flux passing through the plurality of magnetic poles is generated by energization of the plurality of coils, causing the reciprocating rotation of the movable body about an axis of the shaft portion with reference to the rotational center position by electromagnetic interaction between the magnetic flux and the magnet.
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公开(公告)号:US20230025894A1
公开(公告)日:2023-01-26
申请号:US17867719
申请日:2022-07-19
摘要: A rotary reciprocating drive actuator includes: a movable body including a shaft portion and a magnet fixed to the shaft portion; a fixing body including a core assembly, the core assembly including a core body and coils, the core body having magnetic poles, the core assembly being disposed such that the magnetic poles face an outer periphery of the magnet; and a pair of shaft supports configured to sandwich the core assembly in an extending direction of extension of the shaft portion and support the shaft portion at opposite sides of the core assembly such that the shaft portion is rotatable, in which a magnetic flux passing through the core body is generated by energization of the coils, causing reciprocating rotation of the movable body about an axis of the shaft portion by electromagnetic interaction between the magnetic flux and the magnet.
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公开(公告)号:US20230006526A1
公开(公告)日:2023-01-05
申请号:US17854018
申请日:2022-06-30
摘要: A rotary reciprocating driving actuator includes: a movable member including a shaft part and a magnet; and a fixing body including a core assembly including a magnetic pole core with an integral structure including a plurality of magnetic poles, a plurality of coils disposed next to the plurality of magnetic poles, and a magnetic path core to which the magnetic pole core is assembled, wherein the core assembly is disposed such that the plurality of magnetic poles faces an outer periphery of the magnet, wherein a magnetic flux that passes through a magnetic path configured of the magnetic path core and the magnetic pole core of the integral structure is generated through energization of the plurality of coils, and the movable member is rotated back and forth around an axis of the shaft part through electromagnetic interaction of the magnetic flux and the magnet.
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公开(公告)号:US20190115816A1
公开(公告)日:2019-04-18
申请号:US16090347
申请日:2017-03-24
申请人: Yuki TAKAHASHI , Yasutaka KITAMURA , Masaharu KAGAMI , Chikara SEKIGUCHI , Kazutaka SAKAGUCHI , Shigenori INAMOTO
发明人: Yuki TAKAHASHI , Yasutaka KITAMURA , Masaharu KAGAMI , Chikara SEKIGUCHI , Kazutaka SAKAGUCHI , Shigenori INAMOTO
摘要: An actuator has: an affixed section having a coil; a first mobile section that is elastically held and disposed so as to allow movement in the axial direction inside one end of the coil, and has a first magnet magnetized in the axial direction of the coil and disposed on one end in the axial direction; and a second mobile section that is elastically held and disposed so as to allow movement in the axial direction inside another end of the coil, and has a second magnet magnetized in the axial direction and disposed on the other end in the axial direction. The first and second magnets are disposed such that identical magnetic poles are in the same direction in the axial direction, and the first and second mobile sections move in opposite directions along the same axis when a current is applied to the coil.
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公开(公告)号:US20180234000A1
公开(公告)日:2018-08-16
申请号:US15749896
申请日:2016-08-02
申请人: Yuki TAKAHASHI , Masami KAMIJO , Kazutaka SAKAGUCHI , Yasutaka KITAMURA , Masaharu KAGAMI , Shigenori INAMOTO , Mitsumi ELECTRIC CO., LTD.
发明人: Yuki TAKAHASHI , Masami KAMIJO , Kazutaka SAKAGUCHI , Yasutaka KITAMURA , Masaharu KAGAMI , Shigenori INAMOTO
摘要: The purpose of the present invention is to provide an actuator that has a simple configuration and can stably achieve high output without the occurrence of magnetic saturation. This actuator has: a movable body provided with a cylindrical magnet section having alternately N-pole faces and S-pole faces on the peripheral surface surrounding a rotation shaft; and a fixed body provided with, pole tooth surfaces of the same number as the N-pole faces and the S-pole faces, and a coil that excites the pole tooth sections. The movable body has as a turning reference position a position at which the center of the pole tooth surfaces in the circumferential direction and the switching position of the pole faces of the magnet section face each other, and is held to the fixed body so as to be turnable back and forth around the rotation shaft in the circumferential direction.
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公开(公告)号:US20210265904A1
公开(公告)日:2021-08-26
申请号:US17255227
申请日:2019-06-26
摘要: A rotary reciprocating drive actuator reciprocally and rotationally driving the movable body about the shaft part in relation to the fixed body by the electromagnetic mutual effect of the coil and the movable magnet, wherein the movable magnet is magnetized in the radial direction of the shaft part, the two magnetic poles are disposed facing each other across an air gap in the radial direction of the movable magnet and the shaft part, and the fixed body has a rotation-angle-holding part disposed facing the movable magnet across the air gap, the rotation-angle-holding part holding the rotation angle position of the movable magnet by the magnetic attraction force generated with the movable magnet.
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公开(公告)号:US20210184554A1
公开(公告)日:2021-06-17
申请号:US17120176
申请日:2020-12-13
摘要: A movable magnet is configured by alternately magnetizing an even number of magnetic poles forming an South pole and an North pole; a number of magnetic poles of a core body is equal to a number of magnetic poles of the movable magnet; an even number of magnetic poles of the core body is respectively arranged to face the movable magnet with an air gap therebetween on the outer peripheral side of a shaft portion; and a drive unit is provided with a magnet position holding portion to face the movable magnet and magnetically attracts the movable magnet to a reference position. A drive unit is attached to one wall portion of the pair of wall portions of a base portion, and an angle sensor portion for detecting a rotation angle of the shaft portion is attached to the other wall portion of the pair of wall portions.
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公开(公告)号:US20220269068A1
公开(公告)日:2022-08-25
申请号:US17673816
申请日:2022-02-17
摘要: A rotary reciprocating drive actuator capable of increasing the size and amplitude of a movable object such as a mirror, and of stabilizing the drive performance is provided. The rotary reciprocating drive actuator includes a movable part including a rotating shaft, a fixed part supporting the rotating shaft, and a driving part that includes a coil and a core disposed on the fixed part and a magnet disposed on the rotating shaft, and rotates the rotating shaft about the axis thereof with respect to the fixed part by utilizing electromagnetic interaction. The fixed part includes first and second supports disposed so as to face each other with the magnet therebetween in the axial direction. The rotating shaft is rotatably attached to the first and second supports via first and second bearings. One of the first and second bearings is a rolling bearing, and the other is a slide bearing.
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公开(公告)号:US20230026476A1
公开(公告)日:2023-01-26
申请号:US17783892
申请日:2020-12-11
摘要: This optical scanning device includes: a shaft part to which a mirror part is connected; a movable magnet; a base part; a ball bearing; a core unit that has a core body and a coil body and rotationally drives the movable magnet; and a magnet position holding member that is a magnetic body provided facing the movable magnet and magnetically attracts the movable magnet to a reference position. The core unit is disposed on the outer surface side of one wall section of a pair of wall sections of the base part. An angle sensor unit for detecting the rotation angle position of the shaft part is disposed between the core unit and the one wall section.
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公开(公告)号:US20180367019A1
公开(公告)日:2018-12-20
申请号:US15775499
申请日:2016-11-10
申请人: Yuki TAKAHASHI , Chikara SEKIGUCHI , Kazutaka SAKAGUCHI , Yasutaka KITAMURA , Masaharu KAGAMI , Shigenori INAMOTO
发明人: Yuki TAKAHASHI , Chikara SEKIGUCHI , Kazutaka SAKAGUCHI , Yasutaka KITAMURA , Masaharu KAGAMI , Shigenori INAMOTO
摘要: An oscillatory actuator has: a fixed body that has a planar part and a flat coil disposed on the planar part; and a movable body that has a magnet facing the coil and oscillates in a reciprocating manner in one direction relative to the fixed body above the planar part via cooperation between the coil and the magnet. The fixed body has a pair of linear bearings that are respectively disposed along both side surfaces extending in said one direction of the movable body and are equipped with balls capable of rolling and coming into contact with the respective side surfaces. The movable body is supported via the balls of the linear bearings so as to be able to oscillate in said one direction.
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