公开(公告)号：US20130074793A1

公开(公告)日：2013-03-28

申请号：US13628191

申请日：2012-09-27

Applicant: DENSO CORPORATION

Inventor： Seiichirou WASHINO ,  Toru TAKAHASHI ,  Makoto OTSUBO ,  Kuniaki OKA ,  Shuhei OE

IPC: F16D57/00 ,  F01L1/344

CPC classification number: F01L1/3442 ,  F01L1/344 ,  F01L1/352 ,  F01L2001/3522 ,  F16D57/002 ,  F16F9/53 ,  F16F9/535 ,  F16F13/30 ,  F16J15/164 ,  F16J15/3212 ,  F16J15/40 ,  F16J15/403 ,  F16J15/43 ,  H01F1/447

Abstract: A sealing structure has a permanent magnet and a magnetic-flux guiding member for guiding magnetic flux of the permanent magnet to a brake shaft of a brake rotating member. The magnetic-flux guiding member surrounds an outer periphery of the brake shaft so as to form a sealing gap around the brake shaft. The sealing gap is communicated to a fluid chamber, in which magnetic viscous fluid is filled. A fluid sealing member is provided at the brake shaft at a housing outer side of the magnetic-flux guiding member to form an intermediate fluid chamber, in which an intermediate fluid made of non-magnetic liquid is filled.

Abstract translation: 密封结构具有用于将永久磁铁的磁通引导到制动旋转构件的制动轴的永磁体和磁通引导构件。 磁通引导构件围绕制动轴的外周，以在制动轴周围形成密封间隙。 密封间隙被传送到其中填充有磁性粘性流体的流体室。 流体密封构件设置在磁通引导构件的壳体外侧处的制动轴处，以形成中间流体室，其中填充由非磁性液体制成的中间流体。