JP4590197B2 - Motorcycle brake equipment - Google Patents

Description

  The present invention provides a first brake system for operating a front wheel brake in response to an operation of a first brake operation member, a second brake system for operating a rear wheel brake in response to an operation of a second brake operation member, A torque transmission member coupled to the rear wheel brake so as to receive a reaction force generated by a rear wheel brake, an elastic member that imparts a resilient force against the reaction force to the torque transmission member, and The present invention relates to a brake device for a two-wheeled vehicle including an interlocking brake system that brakes the front wheel brake according to the operation of the torque transmission member when the reaction force greater than the elastic force acts.

A torque transmission member is provided between the swing arm that pivotally supports the rear wheel and the rear wheel brake, and a rotation lever that is connected to the torque transmission member via a wire is housed in a case of a brake unit that is fixed to the vehicle body. A brake device for a two-wheeled vehicle in which an elastic member that urges the torque transmission member in a direction opposite to a reaction force acting direction from a rear wheel brake is accommodated in a case of the brake unit is known from Patent Document 1.
JP 2000-53064 A

  In such a brake device, when the rear wheel brake is actuated according to the operation of the second brake operation member, the front wheel brake generates a braking force according to the brake torque of the rear wheel brake so that the rear wheel brake The brake force corresponding to the brake torque is distributed to the rear wheels and the front wheels.

  By the way, the brake force distribution ratio of the rear wheel and the front wheel when the rear wheel brake is operated is set differently depending on the road surface condition and the rider. As described above, in the configuration in which the elastic member that determines the distribution ratio of the brake force is housed in the case of the brake unit, setting and replacement of the elastic member is troublesome, and much time is required for setting and replacement.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a brake device for a two-wheeled vehicle that facilitates the setting and replacement of an elastic member that determines a brake force distribution ratio between a rear wheel and a front wheel.

In order to achieve the above object, the invention according to claim 1 is directed to a swing arm in which a rear wheel is pivotally supported at a rear end and a front end is swingably connected to a vehicle body, and a front wheel brake is attached to a first brake operating member. The first brake system for operating the brake according to the operation, the second brake system for operating the rear wheel brake according to the operation of the second brake operating member, and the reaction force generated by the rear wheel brake. A torque transmission member coupled to a rear wheel brake, an elastic member that imparts a resilient force against the reaction force to the torque transmission member, and the reaction force that is greater than the resilient force of the elastic member acts. And an interlocking brake system that brakes the front wheel brake in accordance with the operation of the torque transmitting member. The brake that causes the first brake system and the interlocking brake system to act on the front wheel brake. A brake device for a two-wheeled vehicle that is individually provided with hydraulic cylinders that generate hydraulic pressure independently of each other, and the panel plate of the rear wheel brake is supported by the swing arm so as to be rotatable about the axle of the rear wheel The other end of the torque transmission member having one end connected to the panel plate is connected to a bracket provided at a lower portion near the front end of the swing arm via an interlocking lever, and below the vehicle body of the interlocking brake system. The disposed hydraulic cylinder is attached to the bracket, and the elastic member disposed outside the vehicle body is provided between the torque transmitting member and the swing arm, and the interlocking lever includes a hydraulic cylinder of the interlocking brake system. A pusher that can be pushed in is provided in the lower part and a connecting part with the torque transmission member is provided in the upper part. Middle portion of the interlocking lever is being rotatably supported, the reaction force which the torque transmission member receives, is input to the interlock brake system of the hydraulic cylinder via the interlocking lever, the bracket, the When the torque transmission member is pulled toward the rear wheel brake by the reaction force acting on the panel plate when the rear wheel brake is operated, the torque transmission is performed by contacting and engaging the upper part of the interlocking lever. it characterized in that stopper for restricting the pulling amount of the member is provided.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the invention, the hydraulic cylinder of the interlocking brake system is arranged so that its cylinder axis is along the longitudinal direction of the vehicle body. The knocker is engaged with the rear portion so that the knocker can be pushed in, and the other end of a brake hose having one end connected to the front wheel brake is connected to the front portion.

  According to the present invention, the elastic member that gives the torque transmission member a resilient force against the reaction force of the rear wheel brake is provided between the swing arm and the torque transmission member, and is disposed outside the vehicle body. To change the brake force distribution ratio between the rear wheels and the front wheels, it is easy to set and replace the elastic members, and it is possible to use elastic members with various characteristics. improves. In addition, it is easy to secure a space for arranging the torque transmission member and the elastic member, which is advantageous in terms of layout, and since the swing arm is often exposed outside the vehicle body, the setting and replacement of the elastic member is further facilitated. .

  Further, since the first brake system and the interlocking brake system are individually provided with hydraulic cylinders that independently generate the brake hydraulic pressure that acts on the front wheel brake, the brake force is mechanically applied in the first brake system and the interlocking brake system. A link mechanism or the like required for transmission is unnecessary, and the structure of the brake device can be simplified.

  In addition, the other end of the torque transmission member with one end connected to the panel plate of the rear wheel brake is connected to a bracket provided at the lower part near the front end of the swing arm via an interlocking lever, and is arranged below the body of the interlocking brake system A hydraulic cylinder is attached to the bracket, and the interlocking lever has a knocker capable of pushing in the hydraulic cylinder of the interlocking brake system in the lower part and a connecting part with a torque transmission member in the upper part, and the interlocking lever in the bracket. Since the middle part of the lever is rotatably supported, the reaction force received by the torque transmission member from the rear wheel brake is input to the hydraulic cylinder of the interlocking brake system via the interlocking lever. In addition to being able to place the hydraulic cylinder of the interlocking brake system at a position that can contribute to lowering the torque, torque Reaches the distance between the member and the hydraulic cylinder is shortened by eliminating the need for wire cable, it is possible to make better interlocking brake actuation accuracy.

  Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

  1 to 3 show an embodiment of the present invention, FIG. 1 is a partially cutaway side view of a motorcycle, FIG. 2 is a diagram showing a configuration of a brake device in a non-brake operation state, and FIG. It is a figure corresponding to Drawing 2 in the state where the brake operation of the 2nd brake operation member was carried out.

  First, in FIG. 1, a front fork 6 that pivotally supports a front wheel WF is supported on a head pipe 5 provided at a front end of a body frame F of the motorcycle, and a bar handle 7 is connected to the front fork 6. . In addition, a V-type engine E constituting the vehicle body B together with the vehicle body frame F is mounted on the front portion of the vehicle body frame F, and the fuel tank 9 covers the upper portion of the engine E so that Mounted on. A transmission M that constitutes a power unit P together with the engine E is housed in a crankcase 8 provided in the engine E.

  The front end of a pair of left and right swing arms 10 extending in the front-rear direction as a support member is supported on the body frame F behind the power unit P so as to be swingable up and down, and between the rear ends of both swing arms 10. The wheel WR is pivotally supported, and the power output from the power unit P is transmitted to the rear wheel WR using an endless chain (not shown).

  A rear cushion unit 11 is interposed between the rear part of the body frame F and the swing arms 10. A seat 12 for seating a rider is attached to the body frame F behind the fuel tank 9. The front fender 13 that covers the front wheel WF from above is attached to the front fork 6, and the rear fender 14 that covers the rear wheel WR from above is attached to the rear portion of the vehicle body frame F.

  Referring also to FIG. 2, a front wheel brake BF, which is a disc brake that generates a braking force according to the action of hydraulic pressure, is mounted on the front wheel WF, and a mechanical brake operating force is applied to the rear wheel WR. The rear wheel brake BR, which is a drum brake that generates a braking force in response to the input of, is mounted.

  A brake lever 15 as a first brake operation member and a front wheel brake BF, which are rotatably provided at the right end of the bar handle 7, are connected via a first brake system 17, and the first brake system 17 The front wheel brake BF is braked in accordance with the operation of the lever 15. Further, a brake pedal 16 as a second brake operation member and a rear wheel WR, which are rotatably provided at a lower portion of the vehicle body frame F, are connected via a second brake system 18, and the second brake system 18 is connected to the brake pedal 16. In response to the operation, the rear wheel WR is braked.

  The reaction force generated by the rear wheel brake BR is received by the torque transmission member 19, and the elastic force generated by the coil spring 20, which is an elastic member, opposes the reaction force against the torque transmission member 19. And applied to the torque transmission member 19. In addition, the interlocking brake system 21 brakes the front wheel brake BF in response to the operation of the torque transmitting member 19 as a reaction force greater than the elastic force of the coil spring 20 is applied.

  The caliper body 24 of the front wheel brake BF, which is a disc brake, includes first to third pots 25, 26, and 27. The first brake system 17 is attached to the bar handle 7 so as to output the brake hydraulic pressure in response to the operation of the brake lever 15, and the first hydraulic cylinder C1 to which the first reservoir R1 is attached, and the first hydraulic cylinder C1. The brake hose 29 is connected to the first and third pots 25 and 27 of the first to third pots 25 to 27 of the caliper body 24. .

  Both ends of the axle 30 of the rear wheel WR are supported by the rear ends of both swing arms 10. The rear wheel BR, which is a drum brake, includes a panel plate 31 that is rotatably supported by the axle 30, a machine And an actuating lever 32 for inputting a brake operating force. On the other hand, the shaft 33 to which the base of the brake pedal 16 is fixed is rotatably supported at the lower part of the vehicle body frame F, and a return spring 34 is contracted between the vehicle body frame F and the brake pedal 16.

  The second brake system 18 includes a lever 35 whose base end is fixed to the shaft 33, and a brake cable 36 provided between the distal end of the lever 35 and the operating lever 32 of the rear wheel brake BR. The brake cable 36 is pulled as the lever 35 rotates in response to the depression operation of the pedal 16, and the operating lever 32 is rotated by the brake cable 36, whereby the rear wheel brake BR is braked.

  By the way, the torque transmission member 19 restricts the rotation of the panel plate 31 of the rear wheel brake BR around the axis of the axle 30 to the panel plate 31 of the rear wheel brake BR and the vehicle body B or the vehicle body B. In this embodiment, the right swing arm 10 that is rotatably connected to the vehicle body frame F in the vehicle body B is used as a support member, and the panel plate 31 and A torque transmission member 19 is provided between the swing arms 10.

  One end of the torque transmission member 19 is coupled to a coupling portion 31a provided on the panel plate 31 of the rear wheel brake BR. On the other hand, an intermediate portion of the interlocking lever 38 is rotatably supported on the bracket 37 provided near the front end of the swing arm 10, and the bent portion 19 a provided on the other end of the torque transmission member 19 is provided on the bracket 37. It is connected to the upper part of the interlocking lever 38. In addition, as shown in FIG. 3, when the torque transmission member 19 is pulled toward the rear wheel brake BR by the reaction force acting on the panel plate 31 when the brake of the rear wheel brake BR is operated, A stopper 37 a is provided that regulates the pulling amount of the torque transmission member 19, that is, the rotation amount of the panel plate 31 by contacting and engaging with the upper portion of the lever 38.

The interlocking brake system 21 is pushed by a knocker 38a provided at the lower part of the interlocking lever 38, thereby outputting a brake hydraulic pressure independently of the first hydraulic cylinder C1 , and a second hydraulic cylinder C2. And a brake hose 40 that connects between the caliper bodies 24 of the front wheel brakes BF. The brake hose 40 is connected to the second pot 26 among the first to third pots 25 to 27 of the caliper body 24.

  Moreover, the second hydraulic cylinder C2 of the interlocking brake system 21 is attached to the bracket 37 so as to be disposed below the vehicle body B in the vicinity of the connecting portion of the torque transmission member 19 to the bracket 37 of the swing arm 10. The torque transmitted from the torque transmitting member 19 is input to the second hydraulic cylinder C2 via the interlocking lever 38. In addition, a second reservoir R2 supported by the vehicle body frame F at a position separated from the second hydraulic cylinder C2 is connected to the second hydraulic cylinder C2 via a hose 42. Thus, the second hydraulic cylinder C2 is arranged so that its cylinder axis is along the longitudinal direction of the vehicle body, and the knocker 38a is engaged with the rear part of the hydraulic cylinder C2 so that the knocker 38a can be pushed in. The other end of the brake hose 40 is connected.

  The coil spring 20 is provided between the swing arm 10 and the torque transmission member 19 so as to exert a resilient force that urges the torque transmission member 19 in a direction opposite to the reaction force acting on the torque transmission member 19 from the rear wheel brake BR. And disposed outside the vehicle body B.

  Next, the operation of this embodiment will be described. The torque transmission member 19 connected to the rear wheel brake BR so as to receive the reaction force generated in the rear wheel brake BR includes a support member and a rear wheel connected to the vehicle body B. A coil spring 20 provided between the brakes BR and applying a resilient force against the reaction force to the torque transmission member 19 is provided between the support member and the rear wheel brake BR and is disposed outside the vehicle body B. Therefore, in order to change the brake force distribution ratio between the rear wheel WR and the front wheel WF, the work for setting or replacing the coil spring 20 is facilitated, and the coil spring 20 having various characteristics can be used. Therefore, the degree of freedom in design is improved.

  Moreover, since the support member is the swing arm 10 that is connected to the vehicle body B so as to pivotally support the rear wheel WR at the rear end, it is easy to secure a space for arranging the torque transmission member 19 and the coil spring 20. This is advantageous in terms of layout. Further, since the swing arm 10 is often exposed outside the vehicle body B, the setting and replacement of the coil spring 20 is further facilitated.

  In addition, the first brake system 17 that operates the front wheel brake BF according to the operation of the brake lever 15 and the torque transmission member 19 that accompanies the reaction force greater than the elastic force of the coil spring 20 from the rear wheel brake BR. The interlocking brake system 21 that brakes the front wheel brake BF according to the operation is provided with hydraulic cylinders C1 and C2 that individually generate brake hydraulic pressures that act on the front wheel brake BF. The system 17 and the interlocking brake system 21 do not require a link mechanism or the like required for mechanically transmitting the braking force, and can simplify the structure of the brake device.

  Further, since the second hydraulic cylinder C2 of the interlocking brake system 21 is disposed below the vehicle body B in the vicinity of the connecting portion of the torque transmission member 19 to the swing arm 10, it can contribute to lowering the center of gravity of the motorcycle. Not only can the second hydraulic cylinder of the interlocking brake system 21 be arranged at the position, but the distance between the torque transmission member 19 and the second hydraulic cylinder C2 is shortened to eliminate the need for a wire cable. Good interlocking brake operation can be performed.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. It is.

1 is a partially cutaway side view of a motorcycle. It is a figure which shows the structure of a brake device in a non-brake operation state. It is a figure corresponding to Drawing 2 in the state where the brake operation of the 2nd brake operation member was carried out.

DESCRIPTION OF SYMBOLS 10 ... Swing arm 15 ... Brake lever 16 as 1st brake operation member ... Brake pedal 17 as 2nd brake operation member ... 1st brake system 18 ... 2nd brake system 19 ..Torque transmission member 20... Coil spring 21 as an elastic member... Interlocking brake system 30... Rear wheel axle 31... Rear wheel brake panel plate 37. ... Interlocking lever 38a ... Knocker 40 ... Brake hose B ... Body BF ... Front wheel brake BR ... Rear wheel brake C1, C2 ... Hydraulic cylinder WR ... Rear wheel

Claims (2)

The rear wheel (WR) is pivotally supported on the rear end, the swing arm (10) whose front end is swingably connected to the vehicle body (B), and the front wheel brake (BF) is operated on the first brake operating member (15). A first brake system (17) that activates the brake according to the first brake system, a second brake system (18) that activates the rear wheel brake (BR) according to the operation of the second brake operating member (16), and the rear wheel A torque transmission member (19) connected to the rear wheel brake (BR) so as to receive a reaction force generated by the brake (BR), and a resilient force against the reaction force on the torque transmission member (19). The front wheel brake (BF) is braked in accordance with the operation of the elastic member (20) to be applied and the torque transmission member (19) when the reaction force greater than the elastic force of the elastic member (20) is applied. Interlocking brake system to operate 21) and equipped with a,
The two-wheeled vehicle in which the first brake system (17) and the interlocking brake system (21) are individually provided with hydraulic cylinders (C1, C2) that independently generate brake hydraulic pressures that act on the front wheel brake (BF). Brake device,
A panel plate (31) of the rear wheel brake (BR) is supported on the swing arm (10) so as to be rotatable around an axle (30) of the rear wheel (WR),
The other end of the torque transmission member (19) having one end connected to the panel plate (31) is connected to a bracket (37) provided near the front end of the swing arm (10) via an interlocking lever (38). And a hydraulic cylinder (C2) disposed below the vehicle body (B) of the interlocking brake system (21) is attached to the bracket (37),
The elastic member (20) disposed outside the vehicle body (B) is provided between the torque transmission member (19) and the swing arm (10),
The interlocking lever (38) has a knocker (38a) capable of pushing the hydraulic cylinder (C2) of the interlocking brake system (21) in the lower part and a connecting part with the torque transmission member (19) in the upper part. In addition, the intermediate portion of the interlocking lever (38) is rotatably supported by the bracket (37), and the reaction force received by the torque transmitting member (19) is transmitted via the interlocking lever (38). Input to the hydraulic cylinder (C2) of the interlocking brake system (21) ,
In the bracket (37), the torque transmission member (19) is pulled toward the rear wheel brake (BR) by a reaction force acting on the panel plate (31) when the brake of the rear wheel brake (BR) is operated. Occasionally, abut against the upper portion of the interlocking lever (38), motorcycle brake equipment, characterized in that the stopper (37a) is provided for regulating the pulling amount of the torque transmission member by engaging (19) . The hydraulic cylinder (C2) of the interlocking brake system (21) is arranged so that its cylinder axis is along the longitudinal direction of the vehicle body, and the knocker (38a) can be pushed into the rear part of the hydraulic cylinder (C2). engaged, also in the front two-wheeled vehicle braking system according to claim 1, wherein the other end of the brake hose having one end connected to the said front wheel brake (BF) (40) is connected.

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