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公开(公告)号：US20240019683A1
公开(公告)日：2024-01-18
申请号：US18343872
申请日：2023-06-29
CPC分类号： G02B26/0816 , H02K33/16 , G02B26/10
摘要： A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a magnet is fixed and being capable of performing a reciprocating rotation around an axis; a base portion including a pair of wall portions for supporting the shaft part via a bearing such that the shaft part is rotatable; a core assembly including: a core body having a plurality of magnetic poles facing an outer circumference of the magnet to sandwich the magnet, a coil body wound around the core body and energized to cause a reciprocating rotation of the movable body, and a magnet position holding portion generating a magnetic attraction force between the magnet position holding portion and the magnet to define a reference position of the reciprocating rotation; and a preload applying part externally fitted to the shaft part and configured to apply a preload to the bearing.
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公开(公告)号：US20240019686A1
公开(公告)日：2024-01-18
申请号：US18350857
申请日：2023-07-12
CPC分类号： G02B26/0816 , H02K33/16 , G02B26/10
摘要： The present invention includes: a movable body including a magnet fixed to an other end portion side of a shaft part to which a movable object is connected at one end portion side; a core assembly including a core body including a plurality of magnetic poles facing an outer circumference of the magnet, a coil body wound around the core body, a magnet position holding portion energized to generate a magnetic attraction force between the magnet position holding portion and the magnet to define a reference position of the reciprocating rotation; and a circuit board disposed to cover the core assembly at the other end side, in which the coil body includes a terminal part to which an end portion of a coil is connected and that is disposed to protrude to the circuit board side so as to be connected to a circuit of the circuit board.
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公开(公告)号：US20240022154A1
公开(公告)日：2024-01-18
申请号：US18351576
申请日：2023-07-13
CPC分类号： H02K33/16 , H02K11/22 , G02B26/105
摘要： A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a movable object is connected, and a magnet; a base portion including a pair of wall portions disposed to sandwich the movable object and support the shaft part; a core assembly including a core body including a plurality of magnetic poles, a coil body, and a magnet position holding portion to define a reference position of the reciprocating rotation, the core assembly being attached to one wall portion; and a sensor board that is attached to an other wall portion and on which a sensor configured to detect a rotational angle of the one end portion of the shaft part is mounted, in which the sensor board is disposed such that the sensor faces the other wall portion from an outer surface side of the other wall portion and detects the rotational angle.
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公开(公告)号：US20240019685A1
公开(公告)日：2024-01-18
申请号：US18350851
申请日：2023-07-12
CPC分类号： G02B26/0816 , H02K33/16 , G02B26/10
摘要： A rotary reciprocating drive actuator includes: a main body unit including: a movable body including a shaft part to which a movable object is connected and to which a magnet is fixed, and a base portion including a pair of wall portions disposed to sandwich the movable object, the base portion supporting the shaft part by the pair of wall portions; a core assembly including: a core body including a plurality of magnetic poles facing an outer circumference of the magnet, a coil body, and a magnet position holding portion; and a connecting surface portion that is integrally disposed on the one end portion side of the core assembly, and that is attached to the one wall portion in a state where the shaft part is inserted into an opening portion and the magnet is disposed in the core assembly.
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公开(公告)号：US20240019684A1
公开(公告)日：2024-01-18
申请号：US18350837
申请日：2023-07-12
CPC分类号： G02B26/0816 , H02K33/16 , G02B26/10
摘要： A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a magnet is fixed, the movable body being configured to perform a reciprocating rotation about an axis; a base portion including a pair of wall portions for supporting the shaft part via a bearing; and a core assembly including: a core body including a plurality of magnetic poles facing the magnet, a coil body, and a magnet position holding portion to define a reference position of the reciprocating rotation, the core assembly being fixed to one wall portion, in which at least one of the base portion, the core body, or the core assembly includes a positioning fixation part for positioning and fixing the at least one of the base portion, the core body, or the core assembly to a fixation target object in a direction parallel to the shaft part.
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公开(公告)号：US20240022153A1
公开(公告)日：2024-01-18
申请号：US18343855
申请日：2023-06-29
摘要： A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a movable object is connected at one end portion side of the shaft part, and a magnet fixed to an other end portion side of the shaft part, the movable body being supported to be capable of performing a reciprocating rotation about an axis; a core assembly including a magnet position holding portion defining a reference position of the reciprocating rotation; and a sensor board on which a sensor for detecting a rotational angle of the shaft part is mounted, the sensor board being disposed to cover the core assembly from the other end portion side, with the sensor facing the magnet side.
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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：US20240154509A1
公开(公告)日：2024-05-09
申请号：US18411109
申请日：2024-01-12
CPC分类号： H02K33/14 , G02B26/0816 , G02B26/10 , H02K7/08 , H02K11/215 , H02K11/22
摘要： A rotary reciprocating drive actuator includes an assembled magnetic member has a rectangular shape surrounding the movable member in a plane orthogonal to the axis direction, the core extends in the X direction along one edge of the rectangular shape, and the pair of core parts respectively extend in the Y direction along a pair of opposing edges of the rectangular shape that are different from the one edge, the assembled magnetic member including the pair of magnetic poles, the pair of core parts around which the pair of coils are respectively wound, and the core at which the rotation angle position holding part is disposed, and winding axes of the pair of coils extend along the Y 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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