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公开(公告)号：US10688673B2
公开(公告)日：2020-06-23
申请号：US15947919
申请日：2018-04-09
摘要： An oscillatory linear actuator includes an electromagnetic core block including an electromagnet (electromagnetic part), and a magnetic block that holds permanent magnets so that the permanent magnets face the electromagnet with a predetermined space in between. The electromagnetic core block integrally includes a core, a coil bobbin, and a base, the core and the coil bobbin forming the electromagnet, and the base holding the core and the coil bobbin. The magnetic block includes the permanent magnets and a frame that holds the permanent magnets so as to allow the permanent magnets to oscillate freely and holds the electromagnetic core block. The frame has a guide portion that guides the electromagnetic core block to adjust a positional relation of the permanent magnets and the electromagnet, and the base is fixed to the frame inside the guide portion.
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公开(公告)号：US10538003B2
公开(公告)日：2020-01-21
申请号：US15947895
申请日：2018-04-09
摘要： An oscillatory linear actuator includes: an output movable element which is reciprocated by a periodically varying magnetic field and performs work on an object; and a vibration absorbing movable element which is reciprocated at a phase opposite to a phase of the output movable element and reduces vibration of the oscillatory linear actuator. The output movable element includes: a first driver which generates a thrust force which is reciprocated by a magnetic field; a work part which performs work on the object at a predetermined distance away from the first driver; a shaft which connects the work part and the first driver; a first weight opposite to the work part relative to the first driver; and a weight support which connects the work part and the first weight.
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公开(公告)号：US11235481B2
公开(公告)日：2022-02-01
申请号：US15950837
申请日：2018-04-11
摘要： An oscillatory linear actuator includes: an output movable element which is reciprocated by a periodically varying magnetic field and performs work on an object; and a vibration absorbing movable element which is reciprocated at a phase opposite to a phase of the output movable element and reduces vibration of the oscillatory linear actuator. The vibration absorbing movable element is lighter in weight than the output movable element.
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公开(公告)号：US11052553B2
公开(公告)日：2021-07-06
申请号：US15952535
申请日：2018-04-13
摘要： An oscillatory linear actuator includes an electromagnet that changes a magnetic field periodically, a first movable body, a second movable body, a holder, and a coupling spring. The first movable body is disposed on one side in the first direction of the electromagnet, includes a permanent magnet, and acts on a target object. The permanent magnet reciprocates in a second direction intersecting with the first direction by the electromagnet. The second movable body is juxtaposed to the first movable body and reciprocates in the second direction. The holder holds the first and second movable bodies to provide space between the first and second movable bodies and the electromagnet and to allow the first and second movable bodies to move in the second direction. The coupling spring is disposed on one side in the first direction of the holder and couples the first movable body and the second movable body.
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公开(公告)号：US09895210B2
公开(公告)日：2018-02-20
申请号：US14653700
申请日：2013-12-12
CPC分类号： A61C17/34 , A61C17/3445 , A61C17/3481 , H02K33/00 , H02K33/06
摘要： An electric linear actuator includes a fixed block, an output movable block, a counter movable block, a projecting side coupling member, a retracting side coupling member, a block coupling member, and an output functional member. The output movable block and the counter movable block are configured to be reciprocated in the movable direction in opposite phases by electromagnetic force acting between the fixed block and the output and counter movable blocks. The projecting side coupling member is coupled to the output movable block and the counter movable block. The retracting side coupling member is coupled to the output movable block and the counter movable block. The projecting side coupling member and the retracting side coupling member have different shapes.
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