Freni Brembo S.p.a.

Other

Antonio Gotti

Cristian Crippa

Fabio Scotti

Armando Puddu

Lorenzo Nessi

Paolo Cesani

Giovanni Fattori

Marco Pagni

Giuseppe Donadoni

Flexible sheathing for the protection of piston-cylinder units for disc brakes are provided. Such flexible sheathing may be arranged in a retracted condition wherein the piston is completely accommodated within the cylinder and in an extended condition wherein the piston is completely extracted from a caliper body defining the cylinder. Pistons incorporating such flexible sheathings and calipers incorporating such pistons are also provided.

Protective sheathings for disc brake piston-cylinder units

The invention illustrates a caliper body () for a disc brake, suitable for being arranged astride of a disc () for a disc brake, said disc () defining a first braking surface () and a second braking surface () opposite the first braking surface (); said caliper body () comprising a first half-caliper () and a second half-caliper (), which are obtained by casting without machining and are suitable for being connected together at respective contact surfaces () defining a joining plane (P) of the half-calipers; said first half-caliper () comprising a wheel-side elongated portion (), extending in a tangential direction, which is suitable for facing an axially inner surface thereof towards the first braking surface (), and at least one first projecting portion (), projecting in an axial direction provided with a first contact surface () suitable for connecting with the second half-caliper (); said second half-caliper () comprising a vehicle-side elongated portion (), extending in a tangential direction, which is suitable for facing an axially inner surface towards the second braking surface (), an attachment portion () suitable for being connected to a support for the caliper and at least one second projecting portion (), projecting in an axial direction provided with a second contact surface (&#x2033;) suitable for connecting with the first half-caliper (); the first projecting portion () and the second projecting portion () being suitable for being connected together at the respective contact surfaces (&#x2033;) so as to form at least one bridge astride of the disc (); each of said first projecting portion () and said second projecting portion () being provided with a radially inner surface (&#x2033;) suitable for facing the disc () that forms an angle &#x3b1; of between 90&#xb0; and 92&#xb0; with the respective contact surface (&#x2033;); in which the first projecting portion () extends farther in the axial direction with respect to the second projecting portion () so that said half-caliper joining plane (P) is axially closer to the vehicle-side elongated portion () with respect to the wheel-side elongated portion ().

Caliper body of a disc brake

The protective device can be associated with a caliper body of a disc-brake caliper having a median plane of the caliper body which can be superimposed on a median plane of the disc arranged perpendicularly relative to an axis of rotation of the disc, the caliper body being arranged with a central portion astride the brake disc so that side walls thereof are arranged on opposite sides of the disc, the side walls of the central portion being connected to side portions so that the side portions are at least partially at the sides of the disc, each of the side portions comprising an opening of a hydraulic brake-fluid circuit defining an opening center, the openings being in fluid communication with one another by means of a brake-fluid pipe arranged astride the central portion, the pipe supplying brake fluid between the side portions, the protective device comprising a shell for protecting the brake-fluid pipe and fixing means for fixing the shell to the caliper body, wherein the fixing means comprise at least one plate which, when the protective device is in the fitted configuration on the caliper body in order to arrange the shell so as to protect the brake-fluid pipe, faces and abuts at least one bearing surface of the central portion of the caliper body, the distance between the points of the at least one bearing surface of the caliper body from the median plane of the caliper body being less than the distance between the median plane of the caliper body and the opening center of at least one opening of the hydraulic circuit.

Caliper disc brake protective device and caliper disc brake

Caliper for disk brakes

Growing community of inventors

Almenno San Salvatore, Italy

Antonio Gotti