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公开(公告)号：US12127651B1
公开(公告)日：2024-10-29
申请号：US16919000
申请日：2020-07-01
申请人： Apple Inc.
发明人： Nicholas R. Trincia , Chihchen Sun , Qigen Ji , Yang Zhou , Jenna L. Withrow , Jack Pickup , Joshua A. Hoover
CPC分类号： A45C13/1069 , A45C11/00 , H01F7/02 , H04R1/1091 , H05K5/03 , A45C2011/001
摘要： Items such as enclosures may be provided with hidden magnets. An enclosure may be formed from a flexible housing layer. The flexible housing layer may be configured to open and close by folding around fold axes. Portions of the flexible layer may include a flexible base layer with openings. Flexible magnets may be embedded within the openings. The flexible magnets may be used in forming a magnetic clasp for the enclosure. The flexible magnets may each have a height and durometer value that closely matches the height and durometer value of an adjacent portion of the flexible base layer, thereby helping to hide the flexible magnets within the housing layer.
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公开(公告)号：US11682513B1
公开(公告)日：2023-06-20
申请号：US17142656
申请日：2021-01-06
发明人： John E. Miesner
摘要： Electromagnetic actuators are provided, which generate bidirectional linear force output without magnetic bias from current or permanent magnets. Systems and methods based on the electromagnetic actuators are also provided. In particular, an electromagnetic actuator having a shaft, an axial bearing, coil assembly, top and bottom stationary flux returns, and top and bottom magnetic flux sensors to measure flux crossing the respective top and bottom axial air gaps.
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公开(公告)号：US11651882B2
公开(公告)日：2023-05-16
申请号：US17486398
申请日：2021-09-27
发明人： Matthias Imboden , Cédric Nicolas , Nicolas Livat
CPC分类号： H01F7/1615 , G04C1/028 , H01F7/081 , H01F2007/086
摘要： A magnetic microactuator (100) including a coil (6; 61; 62) controlling the axial movement of a sliding block (30) including at least one permanent magnet (2) joined or aligned with a ferromagnetic or magnetised rear arbor (42) and guiding the field lines of the magnetic field of revolution in the axial direction (D) through the coil (6; 61; 62) wherein circulates the sliding block (30), up to a rear end (43) of said rear arbor (42) that tends to cooperate by magnetic attraction with at least one first ferromagnetic restoration element (8), located in the vicinity of a rear face (25) of the structure (20) of the microactuator (100), in order to bring said sliding block (30) back into a rear end-of-travel position when no coil (6; 61; 62) is powered.
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公开(公告)号：US11646139B2
公开(公告)日：2023-05-09
申请号：US17560067
申请日：2021-12-22
发明人： Guosheng Xu , Dehong Chen , Zhiyuan Lu , Xiangyu Zhang , Liang Chen , Minyou Ye , Ning Yan , Xingquan Wu
摘要： The present disclosure provides a stellarator magnet based on cubic permanent magnet blocks and an arrangement optimization method thereof. For the characteristic that a three-dimensional magnet coil of a stellarator is complex in structure, the present disclosure provides the stellarator magnet based on the cubic permanent magnet blocks with uniform magnetization, same magnetization and same size; the magnetization directions of the cubic permanent magnet blocks are defined in a limited number of fixed alternative directions; the magnetic field configuration of the stellarator is generated by dipole magnetic fields provided by the permanent magnet blocks and planar coils, so that the device complexity of the stellarator is reduced, and the difficulty and cost of the machining and installation of the magnet are reduced. The shape of the permanent magnet blocks can be replaced by other regular shapes, and the permanent magnet is still formed by the permanent magnet blocks with same shape, same size, uniform magnetization and same magnetization. For the magnet, the present disclosure provides a magnet arrangement optimization method of ‘local compensation’ and related optimization strategies of ‘threshold truncation,’ ‘global fine tuning,’ etc., for meeting different optimization requirements on accuracy of the magnetic fields, usage qualities of magnets, etc., and a magnetic field meeting designing requirements can be obtained.
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公开(公告)号：US11473692B2
公开(公告)日：2022-10-18
申请号：US16754734
申请日：2018-11-14
发明人： Naoki Nishimura , Tadanobu Kawato
摘要： A solenoid valve includes: a movable iron core; a molded solenoid body disposed outside the movable iron core in a radial direction; a solenoid case that accommodates the movable iron core and the molded solenoid body; and a stationary iron core disposed radially inside the molded solenoid body, and generates a magnetic force between the movable iron core and the stationary iron core when a coil is energized, the stationary iron core including a thin portion circumferentially formed and thinned in a circumferential direction, and a flange portion formed at a first axial end of the stationary iron core to extend outward in the radial direction.
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公开(公告)号：US11448103B2
公开(公告)日：2022-09-20
申请号：US16457452
申请日：2019-06-28
发明人： Amir Jafari , Nafiseh Ebrahimi
摘要： In one embodiment, an electromagnetic soft actuator includes a first soft outer member comprising a soft internal electrically conductive coil, a second soft outer member comprising a soft internal electrically conductive coil, and a soft inner shaft on which the first and second soft outer members are mounted, the first and second soft outer members being linearly displaceable along a length of the soft inner shaft, the soft inner shaft comprising a permanent magnet, wherein the first and second outer members linearly move under an electromagnetic force relative to the soft inner shaft and each other when an electric current is applied to the soft internal electrically conductive coils.
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公开(公告)号：US11361894B2
公开(公告)日：2022-06-14
申请号：US16352005
申请日：2019-03-13
发明人： Matt Pellmann
摘要： A bi-stable solenoid includes a housing, a wire coil, a permanent magnet, an armature, a pin, and a spring. The wire coil is arranged within the housing. The armature is slidably arranged within the housing and is moveable between a first armature position and a second armature position. The pin at least partially extends out of the housing and is slidably engaged by the armature. The spring is biased between the armature and the pin. When the pin encounters an intermediate position between a retracted position and an extended position due to the pin engaging an obstruction, the spring is configured to maintain a biasing force on the pin until the obstruction is removed.
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公开(公告)号：US11075028B2
公开(公告)日：2021-07-27
申请号：US16238971
申请日：2019-01-03
发明人： Jaeyoung Park , Sangyoon Kim
摘要： An impact actuator with 2-degree of freedom, which may generate an impact stimulation in any direction on the plane, includes a body having a magnetic substance that is movable therein, one upper solenoid attached to an upper portion of the body, and three or more lower solenoids attached to a lower portion of the body, wherein the upper solenoid and the three or more lower solenoids are independently supplied with AC power from a power supply, respectively.
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公开(公告)号：US11073912B2
公开(公告)日：2021-07-27
申请号：US16315204
申请日：2017-06-26
发明人： Hiromi Suda
摘要： A magnetic deformable member includes a magnetic portion formed of a magnetic elastic body, and a base portion formed of a non-magnetic elastic body to cover at least a side surface of the magnetic portion. At least the magnetic portion has a magnetic deformable portion in which shape deformation is caused by application of a magnetic field. The magnetic deformable portion is provided at a boundary-side end portion on the boundary with the base portion. A display portion in which the shape deformation is displayed is provided on a front surface s1 of the magnetic deformable member. With the magnetic deformable member, a tactile feel or viewability of the display portion can be varied by deforming the boundary between the magnetic portion and the base portion.
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公开(公告)号：US11049635B2
公开(公告)日：2021-06-29
申请号：US16081681
申请日：2016-03-03
发明人： Takeshi Matsui
摘要： Provided according to the present invention is a solenoid with a built-in permanent magnet, with which it is possible to suppress an increase in the amount of magnetic flux that passes through the chuck part, even when the magnetic flux generated by a coil is greater than the magnetic flux of the magnet, and to reliably reduce attraction force. In this solenoid, a permanent magnet and a coil are both built into a cylindrical case having an opening part; the permanent magnet and the coil are both separated and arranged inside the case; a ring member is arranged adjacent to the permanent magnet; a movable iron core is inserted inside the coil; and between the movable iron core and the coil, a metal coil cover is provided so as to cover the coil. The distance d between the case inner wall and the ring member can also be in the range of 0.1-0.3 mm.
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