Patent ID: 8397885
Filing Date: 2013-03-19
Classification: F16F

Abstract:
1. A magneto-rheological fluid brake, comprising: a housing having an inner wall and an inner receiving chamber; a non-magnetically permeable separating ring received in the inner receiving chamber and spaced apart from the inner wall by a spacing, the non-magnetically permeable separating ring having an annular sidewall and an inner receiving space, the annular sidewall being penetrated by a plurality of through holes circumferentially disposed therein and equidistantly spaced apart from each other; a plurality of magnetically permeable blocks corresponding in quantity and position to the through holes, being circumferentially and isometrically disposed in the inner receiving space, and being equidistantly spaced apart from each other by a gap; a plurality of magnetically permeable bars corresponding in quantity and position to the magnetically permeable blocks and penetrating the through holes to connect with the magnetically permeable blocks, respectively, wherein a portion of each of the magnetically permeable bars is projected and exposed from the non-magnetically permeable separating ring, and a coil is wound around the projected and exposed portion of each of the magnetically permeable bars; an axle having two ends protruding from the housing, wherein a disc body is disposed around the axle, positioned between the two ends of the axle, and received in the inner receiving space, the disc body having an upper surface, a lower surface, and a circumferential side surface spaced apart from the magnetically permeable blocks by a first interval; an upper magnetically permeable block enclosedly engaged with the axle, coupled to the non-magnetically permeable separating ring from above, spaced apart from the upper surface of the disc body by a second interval in communication with the first interval, and wound around by an upper coil; a lower magnetically permeable block enclosedly engaged with the axle, coupled to the non-magnetically permeable separating ring from below, spaced apart from the lower surface of the disc body by a third interval in communication with the first interval, and wound around by a lower coil; and a magneto-rheological fluid for filling the first interval, the second interval, and the third interval.