Patent WO-2020230000-A1 (WO)
Inventor: CARRARA MARCO
IPC: F16D55/22
Filed: 2020-05-11
Abstract: A brake caliper for a disc brake comprising: • - a caliper body (2) adapted to straddle a brake disc to apply a braking action on a vehicle; • - said caliper body comprising at least one thrust device housing (4) which accommodates a thrust device (5) adapted to apply a bias on at least one brake pad to abut said at least one brake pad against the braking surfaces of said brake disc; wherein • - said thrust device (5) is operatively connected to a translating screw nut (9); operatively connected to a worm (10); said translating screw nut (9) is operatively connected to a worm (10); said worm (10) is operatively connected to a gearbox (11); and wherein • - said worm (10) is rotatably supported by a screw thrust bearing (12) adapted to support in rotatable manner said worm (10) and to apply for said worm (10) an axial reaction, i.e. a direct reaction prevalently along said axial direction (A-A); • - at least part of said pressure gearbox (11) placed near and operatively connected to said worm (10) is rotatably supported by at least one gearbox thrust bearing (12) adapted to support in rotatable manner said at least one part of said reduction gear (11) and apply for said at least one part of said reduction gear (11) a radial reaction, that is a direct reaction prevalently along said radial direction (R-R); said thrust bearing (12) comprises at least one radially inner slewing ring (14, 15); and wherein said gearbox (11) comprises an epicyclic gear (20); and wherein said epicyclic gear (20) comprises a fixed gear or an internally toothed body (17) which cooperates with at least one planet gear (18), and wherein said at least one planet gear (18) is rotatably supported about at least one planet gear pin (21); and said at least one planet gear pin (21) is operatively connected to said at least one radially inner slewing ring (15) so as to transmit A brake caliper for a disc brake comprising: • - a caliper body (2) adapted to straddle a brake disc to apply a braking action on a vehicle; • - said caliper body comprising at least one thrust device housing (4) which accommodates a thrust device (5) adapted to apply a bias on at least one brake pad to abut said at least one brake pad against the braking surfaces of said brake disc; wherein • - said thrust device (5) is operatively connected to a translating screw nut (9); operatively connected to a worm (10); said translating screw nut (9) is operatively connected to a worm (10); said worm (10) is operatively connected to a gearbox (11); and wherein • - said worm (10) is rotatably supported by a screw thrust bearing (12) adapted to support in rotatable manner said worm (10) and to apply for said worm (10) an axial reaction, i.e. a direct reaction prevalently along said axial direction (A-A); • - at least part of said pressure gearbox (11) placed near and operatively connected to said worm (10) is rotatably supported by at least one gearbox thrust bearing (12) adapted to support in rotatable manner said at least one part of said reduction gear (11) and apply for said at least one part of said reduction gear (11) a radial reaction, that is a direct reaction prevalently along said radial direction (R-R); said thrust bearing (12) comprises at least one radially inner slewing ring (14, 15); and wherein said gearbox (11) comprises an epicyclic gear (20); and wherein said epicyclic gear (20) comprises a fixed gear or an internally toothed body (17) which cooperates with at least one planet gear (18), and wherein said at least one planet gear (18) is rotatably supported about at least one planet gear pin (21); and said at least one planet gear pin (21) is operatively connected to said at least one radially inner slewing ring (15) so as to transmit the action of said gearbox (11) to said worm (10) by means of said at least one radially inner slewing ring (15).