Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
  • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
  • B60T11/16—Master control, e.g. master cylinders
  • B60T11/20—Tandem, side-by-side, or other multiple master cylinder units
  • B60T11/203—Side-by-side configuration
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
  • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
  • B60T11/16—Master control, e.g. master cylinders
  • B60T11/20—Tandem, side-by-side, or other multiple master cylinder units
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
  • B62K23/00—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips
  • B62K23/02—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips hand actuated
  • B62K23/06—Levers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
  • B62L3/00—Brake-actuating mechanisms; Arrangements thereof
  • B62L3/02—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever
  • B62L3/023—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever acting on fluid pressure systems

Definitions

• the present invention relates to a device for controlling the hydraulic brakes of a two wheeled vehicle to achieve a combined braking.
• the control device may be applied to two-wheeled vehicles such as bicycles, motorcycles, scooters.
• Combined (or integral) braking systems for two-wheeled vehicles which are capable of distributing the braking force to both the front wheel and the rear wheel simultaneously.
• a single control instead of assigning the action of the front and rear brakes to two separate controls, a single control simultaneously actuates the front and rear brakes.
• Patent publication CN 102745293 A discloses a combined braking system comprising a hydraulic brake distributor that has an outer body which forms a cylindrical cavity in communication with two outlets and two inlets for the brake fluid.
• Two separate piston valve elements are mounted axially movably in the cylindrical cavity, these piston valve elements being axially aligned and axially movable in the cavity.
• the valve elements are provided with sealing gaskets that act against the inner wall of the cylindrical cavity.
• the actuation of the first of the two brake controls causes brake fluid to flow into the cylindrical cavity from an inlet arranged in an intermediate position between two piston valve elements.
• the actuation of the first brake control causes both of the piston valve elements to move, with a consequent simultaneous flow of brake fluid toward both the front and rear brakes.
• the actuation of the second brake control causes brake fluid to flow toward only one of the brakes, either the front or rear.
• a brake control device for a two-wheeled vehicle having a double brake master cylinder which may be controlled by means of two control levers placed side by side on the handlebar. An upper lever operates the front brake while the lower lever operates the rear brake. The two levers are close together and may be operated at different times or together with one hand.
• the device features a separate double hydraulic chamber with two separate fluid reservoirs for a double actuation.
• the control device comprises two brake master cylinders, both of which may be operated simultaneously by the same single manual control lever, according to a combined or integral braking mode.
• a switching element, associated with the manual control lever, may exclude one of the two master cylinders.
• Fig. 1 is a sectional view from above of a brake control device
• Fig. 2 is a sectional view from below, according to a lower section plane than that of Fig. 1, showing the brake control device in a first non-activated position;
• Fig. 3 is a sectional view similar to Fig. 2, illustrating the brake control device in a second activated position;
• Fig. 4 is an exploded view of the control device of Fig. 1-3;
• Fig. 5 is atop view of the brake control device of Fig. 1;
• Fig. 6 is a vertical sectional view of the brake control device
• Fig. 7 is another exploded perspective view of some of the components of the brake control device.
• Fig. 8 illustrates the control device in a condition in which a switching element is in the inactive position.
• numeral 10 indicates in its entirety a control device for the hydraulic brakes of a two-wheeled vehicle (not shown), equipped with a first rear brake for a rear wheel and a second front brake for a front wheel.
• the control device 10 comprises a master cylinder body 11 which may be attached to a handlebar (not shown) of the two-wheeled vehicle .
• the master cylinder body 11 may have a cylindrical seat 12.
• the control device 10 comprises a first 13 and a second 14 brake master cylinder, both of which may be operated by the same single manual control lever 15.
• the master cylinder body 11 may be made of plastics or metal material.
• the control lever 15 is hinged to the master cylinder body 11 about a hinging axis which, in conditions of use, is oriented substantially vertically or slightly inclined.
• the first brake master cylinder 13 is preferably located adjacent to the second brake master cylinder 14. According to a preferred embodiment, the first brake master cylinder is located immediately above the second brake master cylinder.
• the first brake master cylinder 13 comprises a first hydraulic chamber 16 formed in the master cylinder body 11 and hydraulically connectable to the rear brake, and a first piston 17, movable in the first hydraulic chamber 16.
• the master cylinder body 11 also forms a top reservoir 31 to supply brake fluid (for example oil) to the first hydraulic chamber 16 and thus to the first brake, the rear one in this example.
• brake fluid for example oil
• the second hydraulic chamber 21 may be fed by the hydraulic circuit (not shown) of the second brake, the front one in this example.
• a lid for closing the tank 31 is indicated with 32.
• control lever 15 may act in a thrust relationship on the first piston 17 by means of a first intermediate transmission or thrust member 18, rotatably mounted on the master cylinder body 11 about a rotation axis coincident or parallel to the hinging axis of the lever 15 to the master cylinder body 11.
• the first intermediate transmission member 18 is adjustable with respect to the control lever 15, for example by means of an adjustment screw 19.
• the adjustment screw 19 allows the rest position of the control lever 15 to be adjusted, placing it nearer or further away from the handlebar according to the size of the user’s hand.
• an elastic element 20, for example a compression spring, interposed and acting in thrust relationship between the first intermediate thrust member 18 and the control lever 15 may be provided to urge the first intermediate member 18 constantly against the adjustment screw and to take up the play between the member 18 and the lever 15, preventing the transmission of vibrations.
• the intermediate thrust element 18 may be made of a first material, for example forged aluminum, while the control lever 15 may be made of a second lighter material, for example an aluminum alloy.
• the driver may actuate simultaneously the front brake as well as the rear brake with the same actuating movement of the control lever 15.
• the second brake master cylinder 14 comprises a second hydraulic chamber 21, formed in the master cylinder body 11 and hydraulically connectable to the front brake, and a second piston 22, movable in the second hydraulic chamber 21.
• the two hydraulic chambers are adjacent, parallel and arranged one immediately above the other.
• control lever 15 may act 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 the hinging axis of the lever 15 to the master cylinder body 11.
• the second intermediate transmission member is obtained as a lever, in particular a second-class lever, having a thrust portion 24, acting against the second piston 21 and an engagement surface 26 on which the switching member 27 may optionally act.
• the switching member 27 may be rotatably mounted to the manual control lever 15.
• the switching member 27 may advantageously be obtained as a cam switching member.
• the switching member 27 includes a pin 28, which may be rotationally actuated by means of a wheel 29 accessible to the driver, and a surface 30 which is eccentric with respect to the pin 28. By acting on the wheel 29, the driver may vary the angular position ofthe eccentric surface 30 between a passive position and an active position.
• the wheel 29 when the driver wishes to exclude the front brake from the influence of the manual control lever 15, the wheel 29 must be turned so that the eccentric surface 30 moves to an inactive position (Fig. 8), where the eccentric surface 30 is spaced apart and does not interfere with the second transmission member 23 when the manual control lever 15 is operated.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Transportation (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Transmission Of Braking Force In Braking Systems (AREA)
• Braking Systems And Boosters (AREA)
• Regulating Braking Force (AREA)
• Hydraulic Control Valves For Brake Systems (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (7)

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Citations (5)

Family Cites Families (37)

• 2020
  • 2020-02-10 IT IT102020000002530A patent/IT202000002530A1/it unknown
• 2021
  • 2021-02-09 CN CN202180013928.1A patent/CN115151455B/zh active Active
  • 2021-02-09 JP JP2022548520A patent/JP7685511B2/ja active Active
  • 2021-02-09 DE DE112021000969.9T patent/DE112021000969T5/de active Pending
  • 2021-02-09 US US17/798,878 patent/US12258098B2/en active Active
  • 2021-02-09 BR BR112022015693A patent/BR112022015693A2/pt unknown
  • 2021-02-09 WO PCT/IB2021/051027 patent/WO2021161160A1/en not_active Ceased

Patent Citations (5)

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