TH43791B - Brake devices and straddle vehicles - Google Patents

Abstract

DC60 (Problem to be solved) This invention provides a braking device with reduced transmission loss in the transmission line for the action force from the linkage brake lever to the front wheel brake actuator. The braking device 10 consists of a front wheel brake lever 20 mounted on one of the levers 4, a linkage brake lever 40 mounted on the other of the levers 4 and connected to the rear wheel brake 17, a front wheel brake actuator 30 mounted on the other of the levers 4 connected to the linkage brake lever 40 to generate hydraulic fluid pressure 12 connected to the front wheel brake 14 by the action force of the front wheel brake lever 20 or the linkage brake lever 40 to perform the front wheel brake 14, and a transmission line 21 provided extending from one of the levers 4 to the other to transmit the action force of the front wheel brake lever 20 to the front wheel brake actuator 30.

Claims (12)

1. The braking device (10) consists of the front brake lever (20) which is positioned on the first side of the handgrip (4) of the vehicle (1); the linkage brake lever (40) which is positioned on the second side of the handgrip (4) and connected to the rear brake (17); the front brake actuation mechanism (30) for creating hydraulic fluid pressure (12) which is connected to the front brake (14) by the acting force of the front brake lever (20) or the linkage brake lever (40) to create front brake action (14); and the actuation force transmission part (21) which is located between the first and second sides of the handgrip (4) where the front brake actuation mechanism (30) consists of the master cylinder (32) and the arm (31) which receives the acting force of the front brake lever (20) or the linkage brake lever (40) to the arm (31) which receives the acting force of the hydraulic (12), and This arm (31) is shaped to allow relative movement with the actuator (21). When the actuator force is transmitted from the linkage brake lever (40) to the arm (31), the front wheel brake actuator (30) is positioned close to the linkage brake lever (40) so that it can be positioned on the second side of the lever (4), and the actuator (21) is adjusted to transmit the actuator force of the front wheel brake lever (20) to the front wheel brake actuator (30). 2. Braking device (10) in accordance with claim 1, where a travel distance is provided between the linked brake lever (40) and the front wheel brake actuator (30) to delay the transmission of the working force from the linked brake lever (40) to the front wheel brake actuator (30). 3. Brake devices (10) under claim 2, where the travel distance is provided by 4. The braking device (10), according to any of the preceding claims, shall consist of a rear brake line (11) for transmitting the actuating force of the linkage brake lever (40) to the rear brake (17); and a transmission element (42) which receives the actuating force of the linkage brake lever (40) to pull the rear brake line (11) and to transmit the actuating force to the front brake actuation mechanism (30), where this transmission element (42) is attached to the linkage brake lever (40). 5. Braking device (10) pursuant to claim 4, where the transmission element (42) shall be provided to be able to move by the reaction force received by the front wheel brake actuation mechanism (30) when the linkage brake lever (40) is engaged, and the rear wheel brake line (11) shall stop the movement of the transmission element (42) against the reaction force received by the transmission element (42), thus the transmission element (42) transmits the working force of the linkage brake lever (40) to the front wheel brake actuation mechanism (30) against the reaction force in the state in which the movement of the transmission element (42) is stopped. 6. The braking device (10) under claim 4 or 5, where the transmission element (42) shall have a supported part (42b) to be supported by the rear brake cable (11) and the acting force transmission (42c) for the actuation of the linked brake lever (40) to the front brake drive mechanism (30), the transmission element (42) shall be attached to the linked brake lever (40) to allow rotational movement, and the supported part (42b) shall be shaped to stop the rotational movement of the transmission element (42) by being supported by the rear brake cable (11), and the distance (L1) from the center of rotation of the transmission element (42c) to the acting force transmission (42c) shall be shorter than the distance (L2) from the center to the supported part (42b). 7. The braking device (10B) under claim 4, where the transmission part consists of an equalizer (64), and the equalizer (64) shall have a rotating support (64a) which is supported for rotation by the linkage brake lever (40B), a cable-attached part (64b) which is positioned away from the rotating support (64a) to pull the rear wheel brake cable (11), and an acting force transmission part (64c) which is positioned away from the rotating support (64a) to transmit the acting force of the linkage brake lever (40B) to the front wheel brake drive mechanism (32B). 8. Braking device (10) in accordance with claim 7, where the rotating support part (64a) of the transmission part shall be arranged between the working force transmission part (64c) and the part to which the cable is attached (64b). 9. The braking device (10) under any of the claims 1 through 3 shall be further composed of a transmission element (64) for transmitting the working force of the linked brake lever (40) to the front wheel brake drive mechanism (30); and a push element (65) for providing the front wheel brake drive mechanism with a force in the opposite direction to which the transmission element (64) transmits the working force of the linked brake lever (40). 10. Brake device (10) pursuant to any of the preceding claims in which the working force transmission part (51) consists of a rod extending between the first and second sides of the handle side (4). 11. The braking device (10) under claim 10, where a rod (51) is connected to the front wheel brake actuator (30) and a linkage (56) is supplied to the front wheel brake lever (20), and this rod (51) is supplied with an adjustment mechanism for adjusting the distance between the front wheel brake actuator (30) and the linkage (56). 12. A straddling vehicle (1) equipped with a braking device according to any of the preceding claims.