Control device for hydraulic brakes of a two-wheeled vehicle
AssigneeRaicam Driveline S.R.L.
InventorsSandro BONARDO, Roberto CANALE
Life of this patent
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Abstract
A control device comprises two brake master cylinders (13, 14), both of which may be operated simultaneously by the same single manual control lever (15), according to a combined or integral braking mode. A switching element (27), associated with the manual control lever (15), may exclude one (14) of the two brake master cylinders.
Claims12
A control device (10) for the hydraulic brakes of a two-wheeled vehicle provided with a first brake for a first wheel and a second brake for a second wheel, the control device comprising:
- a first brake master cylinder (13) comprising:
- a master cylinder body (11),
- a first hydraulic chamber (16) formed in the master cylinder body (11) and hydraulically connectable to the first brake, and
- a first piston (17), movable in the first hydraulic chamber (16);
- a single manual control lever (15), rotatable with respect to the master cylinder body (11), acting on the first piston (17) to operate the first brake;
- characterized in that the control device (10) further comprises:
- a second brake master cylinder (14), comprising:
- a second hydraulic chamber (21) formed in the master cylinder body (11) and hydraulically connectable to the second brake, and
- a second piston (22), movable in the second hydraulic chamber (21) for operating the second brake by means of said manual control lever (15),
- a switch element (27), associated with the manual control lever (15), to selectively activate and deactivate the second piston (22), the switch element (27) having two alternative positions:
- a first passive position, in which a rotation of the manual control lever (15) does not activate the second piston (22), and
- a second active position, in which a rotation of the manual control lever (15) simultaneously actuates the first piston (17) to actuate the first brake and the second piston (22) to actuate the second brake, according to a combined or integral braking mode.
A control device according to any one of the preceding claims, wherein the two hydraulic chambers (16, 21) are adjacent, parallel and arranged one above the other.
A control device according to any one of the preceding claims, wherein the manual control lever (15) acts in thrust relationship on the second piston (22) by means of a second intermediate thrust or transmission member (23), rotatably mounted to the master cylinder body (11) about a rotation axis (25) coincident or parallel to a hinging axis of the manual control lever (15) to the master cylinder body (11).
A control device according to any one of the preceding claims, wherein the master cylinder body (11) forms a top reservoir (31) to supply the brake fluid to the first hydraulic chamber (16).
A control device according to any one of the preceding claims, wherein the manual control lever (15) acts in a thrust relationship on the first piston (17) by means of a first intermediate transmission or thrust member (18) rotatably mounted to the master cylinder body (11) about a rotation axis coincident or parallel to a hinging axis about which the manual control lever (15) is pivotally mounted to the master cylinder body (11).
A control device according to any one of the preceding claims, wherein the first intermediate transmission member (18) is adjustable with respect to the control lever (15) by means of an adjustment element (19) which allows the rest position of the manual control lever (15) to be adjusted, placing it closer to or farther from a vehicle handlebar.
Dependencies are inferred from the claim text.