发明名称 DEVICE FOR RETRACTING A PISTON
摘要 A device (1) for retracting a piston (2) for a brake caliper, said device comprising an annular seat (26) coaxial with the piston seat, said annular seat having an axial abutment surface (40) perpendicular to said axial direction and arranged in the direction of output of the piston (2), and a radial bottom surface (28) arranged facing said side surface (11) of the piston, at least one elastic element (12) arranged in said annular seat (26), with a first radial surface thereof (13) in contact with force against said side surface of the piston, and with a second radial surface thereof (14) in contact with force against said radial bottom surface (28) of the annular seat (26), at least one elastic ring (21) housed in said annular seat (26) and axially arranged between said at least one elastic element (12) and said axial abutment surface (40), on the opposite side to the brake fluid, said ring (21) having an inner perimeter surface (41) and an outer perimeter surface (42), between said inner perimeter surface (41) and said side surface (11) of the piston forming a first annular chamber (18) open towards the side surface (11) of the piston and towards the elastic element (12), a second chamber (20) facing said outer perimeter surface (42) and arranged between said outer perimeter surface (42) and a portion (30) of said radial bottom surface (28) of the seat (26), said second chamber (20) is suitable for allowing the deformation of the ring (21) up to its dilated configuration, said second chamber (20) is substantially continuous and annular; said ring (21) is radially elastically deformable varying between a rest configuration and a dilated configuration.
申请公布号 WO2013046122(A1) 申请公布日期 2013.04.04
申请号 WO2012IB55102 申请日期 2012.09.25
申请人 FRENI BREMBO S.P.A. 发明人 CESANI, PAOLO;CRIPPA, CRISTIAN
分类号 F16D65/18;F16D65/00 主分类号 F16D65/18
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