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1. 发明申请

US20110272537A1 ENGAGEMENT ARRANGEMENT 审中-公开
标题翻译：参与安排
公开(公告)号：US20110272537A1
公开(公告)日：2011-11-10
申请号：US12736317
申请日：2009-04-02
申请人： Nabil Gindy , Amir Fahmi , Yan Wang , Venkata S. Kancharla , Kevin Walker
发明人： Nabil Gindy , Amir Fahmi , Yan Wang , Venkata S. Kancharla , Kevin Walker
IPC分类号： H01F7/02 , F16M13/00 , H01F7/00 , H01F1/28
CPC分类号： B25B1/2421 , B25B1/2457 , B25B11/002
摘要： Retention of position and clamping of components is ideally performed with an engagement arrangement which is reconfigurable. Magnetorheological (MR) fluids have been utilised for reconfigurable engagement arrangements but typically require powerful electromagnets to activate the MR fluid. By providing enclosed chambers with a constriction in the form of a passage between a reservoir portion of the chamber and an engagement portion of the chamber it is possible to utilise smaller permanent magnets acting upon a smaller volume of MR fluid in the passage. In such circumstances initial positioning of engagement elements is provided through forced displacement in the form of a plunger or pin and then retention of the engagement element position achieved through positioning a magnetic field across and about a passage to create an effective block retaining MR fluid volume and therefore presentation of the engagement element. In order to achieve such performance MR fluids which have an appropriate performance and durability are necessary. In such circumstances in accordance with other aspects of the present invention particular magnetorheological fluids are also described.
摘要翻译：理想情况下，使用可重新配置的接合装置来实现部件保持位置和夹紧。磁流变（MR）流体已被用于可重构接合装置，但通常需要强大的电磁铁来激活MR流体。通过提供具有在腔室的储存部分和腔室的接合部分之间的通道形式的收缩的封闭腔室，可以利用作用在通道中较小体积的MR流体的较小永久磁铁。在这种情况下，接合元件的初始定位通过柱塞或销的形式的强制位移来提供，然后通过在通道上和周围定位磁场来实现接合元件位置的保持，以产生保持MR流体体积的有效块，因此呈现接合元件。为了实现这种性能，需要具有适当性能和耐久性的MR流体。在这种情况下，根据本发明的其它方面，还描述了特定的磁流变流体。

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