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公开(公告)号：US11527946B2
公开(公告)日：2022-12-13
申请号：US16900718
申请日：2020-06-12
申请人： Apple Inc.
发明人： Riccardo Tarelli , Yumeng Liu , Shingo Yoneoka
摘要： A haptic engine includes a haptic actuator having a double-wound driving coil in which the two windings are connected with each other either in series or in parallel. By using the double-wound driving coil in which the two windings are connected with each other in series, an instant back EMF voltage induced in either of the two windings can be determined without having to measure in real time a resistance of the corresponding winding, and without having to sense a driving current through the double-wound driving coil. By using the double-wound driving coil in which the two windings are connected with each other in parallel, an instant back EMF voltage induced in either of the two windings can be determined without having to measure in real time a resistance of the corresponding winding.
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公开(公告)号：US20220320931A1
公开(公告)日：2022-10-06
申请号：US17707967
申请日：2022-03-30
发明人： Shinji HATANO , Kazuhiko YANAGISAWA
摘要： An actuator includes a support body, a movable body, a connection body, and a magnetic drive mechanism having a coil and a magnet for relatively moving the support body and the movable body. A winding part of the coil includes effective side portions, a first curved side portion connecting one side ends of the effective side portions, and a second curved side portion connecting the other side ends of the effective side portions. The magnet faces the effective side portions of the coil. A yoke fixed to the magnet includes a first yoke, a second yoke, a one side connection yoke and the other side connection yoke connecting the first yoke with the second yoke, and the one side connection yoke and the other side connection yoke are provided at positions so as not to overlap with the effective side portions and the magnet.
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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：US20220200404A1
公开(公告)日：2022-06-23
申请号：US17533147
申请日：2021-11-23
发明人： Jie Ma
摘要： The present invention provides a vibration motor having a housing with an accommodation space; a stator having an iron core, a coil, and a yoke; and a vibrator. The vibrator includes a magnetic circuit system having a magnet group, and a pole plate arranged at a side of the magnet group away from the stator. The vibration motor further has an elastic support member supporting the vibrator, and an interval between the stator and the magnet group. The yoke is opposite to the magnet group, and includes a groove formed from a surface opposite to the magnet group away from the magnet group. One of the objects of the present invention is to provide a vibration motor which improves stability of the whole system and reduces negative stiffness.
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公开(公告)号：US11336164B2
公开(公告)日：2022-05-17
申请号：US16416832
申请日：2019-05-20
申请人： MINEBEA CO., LTD.
发明人： Minoru Kuroda , Makoto Tanaka
IPC分类号： H02K33/02 , H02K33/00 , H02K7/065 , H02K1/34 , H02K5/24 , H02K5/04 , B06B1/04 , H02K1/06 , H02K5/02
摘要： A holder is used while attached to a chassis of a vibration generator that moves a vibrator to generate a vibration. The holder includes a vibrator retention unit retaining the vibrator, a fixed unit fixed to the chassis, and an arm. The arm connects the fixed unit and the vibrator retention unit, and the arm supports the vibrator retention unit while the vibrator retention unit can be displaced with respect to the fixed unit. The fixed unit, the arm, and the vibrator retention unit are integrally formed using resin.
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公开(公告)号：US20220109360A1
公开(公告)日：2022-04-07
申请号：US17273293
申请日：2020-01-06
发明人： Chunguang Li , Qiang Yan
摘要： The invention relates to the field of passive power generation devices, in particular to a toggle-type magnetic power generation device, which comprising a coil, a magnetic core, a coil bobbin and a coil support. A through groove allowing the magnetic core to penetrate through is formed in the coil bobbin. The coil is wound around the outer surface of a side wall of the through groove and corresponds to the magnetic core. An opening allowing part of the coil bobbin to be embedded therein is formed in the coil support. The opening is formed in the coil support and allows part of the coil bobbin to be embedded therein, so that the number of turns of the coil is increased under the precondition of maintaining the existing size, thus improving the power generation capacity and the stability of the electrical performance of the magnetic power generation device.
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公开(公告)号：US11211839B2
公开(公告)日：2021-12-28
申请号：US16706823
申请日：2019-12-08
发明人： Fanghua Ling , Feng Tao , Xiaofeng Pu
摘要： The invention provides a vibration motor includes a housing, a vibrator in the housing, a stator accommodated in the housing, and a number of elastic parts suspending the vibrator in the housing. One of the vibrator and the stator includes a magnetic circuit system, and the other includes a coil. The elastic part is in an H shape, each has a first fixation part fixedly connected with the magnetic circuit system, and two second fixation parts perpendicularly extending from two opposite ends of the first fixation part. In addition, an interval is formed between the two second fixation parts. The second fixation parts and the first fixation part are fixedly connected with the housing. Therefore, the amount of parts of the vibration motor is reduced, the structure of the elastic part is simple, the machining and forming are simplified, and the cost is lower.
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公开(公告)号：US11101762B2
公开(公告)日：2021-08-24
申请号：US16441368
申请日：2019-06-14
发明人： Steven A. Avritch
摘要： A linear motor actuator includes a plurality of stators mounted stationary relative to one another along a common actuation axis. A translator rod is mounted to the stators for linear motion relative to the stators along the actuation axis, wherein each stator is magnetically coupled to the translator rod to drive motion of the translator rod along the actuation axis.
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公开(公告)号：US20210143719A1
公开(公告)日：2021-05-13
申请号：US17149396
申请日：2021-01-14
发明人： David Deak, SR.
摘要： A novel method of triggering an electromagnetic type energy harvesting generator that has disposed a spherical magnet, surrounded by a coil of wire and rotatable in an enclosure about an axis with an axially protruding paddle member, axially aligned dual offset paddle members, or other flick trigger mechanism structure situated tangent along the surface of the spherical magnet enclosure, wherein this enclosed magnet is centred within the electrical coil, which is free to rotate about its axis. The magnet is held in a static state rotational position by two opposite outwardly disposed flux focus magnets. The spherical magnet and the focus magnets are all in a magnetic attractive circuit; and the magnetic flux lines are in a static field concentration throughout the coil windings aided by the focus magnets. A reciprocating trigger device means with a contact finger is utilized to engage the axially protruding paddle member(s).
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公开(公告)号：US10992214B2
公开(公告)日：2021-04-27
申请号：US16526934
申请日：2019-07-30
摘要： A linear vibration motor includes: a housing having a receiving space; a vibrator unit received in the housing; and a stator configured to drive the vibrator unit to vibrate. The vibrator unit includes at least two vibrators arranged along a vibrating direction and spaced apart from each other. Two adjacent vibrators of the at least two vibrators are connected by an elastic holder; the elastic holder includes a first fixed portion, two second fixed portions respectively located at two sides of the first fixed portion, and two deformation portions connecting the first fixed portion with the second fixed portion; the first fixed portion is fixed to the housing; and the two second fixed portions are respectively fixed to the two adjacent vibrators. The linear vibration motor can provide rigidity support to the vibrators.
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