JP3422518B2 - Motorcycle braking device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear brake device for a motorcycle. 2. Description of the Related Art Conventional motorcycles mainly operate a front brake lever with a right hand, a clutch lever with a left hand, a rear brake pedal with a right foot, and a shift pedal with a left foot. For example, Japanese Patent Publication No. 1-59423 proposes a vehicle provided with a start control lever near a handle grip, and Japanese Utility Model Publication No. 63-23566 proposes a vehicle provided with a throttle valve operating lever of a carburetor near a handle grip.
It does not change the arrangement of the front brake lever and rear brake pedal. [0003] The cornering of a motorcycle requires a high technique. For example, there is a method of tilting the vehicle body and protruding the occupant's body toward the turning center to counter the centrifugal force. The right foot may be separated from the rear brake pedal due to the movement of the body. Or, for some reason, the right foot may not be fully used. In either case, the operation of the rear brake pedal becomes difficult. However, an object of the present invention is to provide a mechanism capable of sufficiently operating not only the front brake but also the rear brake in such a case. [0004] In order to meet the above demand, the present invention provides a clutch operator near a handle grip, and a rear wheel for rear wheel braking near and below the clutch operator. Provide a brake operator. The rear wheel is braked by operating the rear brake operator with the hand that operates the clutch operator. Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals.
FIG. 1 is a side view of a motorcycle according to the present invention. The motorcycle 1 has a front wheel 4 via left and right front forks 3L and 3R (3L is on the front side) at a front portion of a body frame 2, and a swing arm 5 at a rear portion. The rear wheel 6 is mounted via a motor, and the rear wheel 6 is driven by an engine 7 in a chain. Engine 7 is 2
This is a cycle V type four-cylinder engine, and includes a radiator 8, an intake duct 9, a carburetor 10, a fuel tank 11, four exhaust pipes 12, and mufflers 13. The swing arm 5 is suspended by the cushion unit 15 on the vehicle body frame 2 side. 2a is a bracket for that.
The engine 7 and the like are covered with the cowl 16. Next, the brake device of the motorcycle 1 will be described. A rear brake pedal 20 is pivotally supported at the back of the engine 7 in the drawing. A front brake lever (not shown) operated by the right hand is provided above the front fork 3R, a clutch lever 21 is provided above the front fork 3L as a clutch operator operated by the left hand, and a rear brake is provided as a rear brake operator. A lever 22 is attached. A front brake caliper 23a is provided below the front forks 3L and 3R.
The front brake caliper 23a is connected to a front brake lever (not shown) via a hose 23b. FIG. 2 is a view of the front brake lever of the present invention as viewed from the occupant side. The top bridge 25 is provided on the upper and lower surfaces of a head pipe 24 fixed to the front end of a body frame (not shown).
And a bottom bridge 26 are horizontally passed, and a left front fork 3L and a right front fork 3R (not shown) are attached to left and right ends of these bridges 25, 26. The left front fork 3L has a handle pipe 2
7, the clutch lever 21 is mounted, and a rear brake lever 22 is mounted below the clutch lever 21. FIG. 3 is a view taken in the direction of arrow 3 in FIG. 2, and FIG. 4 is an exploded view for supplementing FIG. In FIG. 4, an annular handle holder 31 is attached to the left front fork 3L, fixed with bolts 32, 32, and a handle pipe 27 having a handle grip 34 attached to a pipe holder 33 integrally formed with the handle holder 31. Are fixed by bolts 35, a clutch lever bolder 36 is fixed to a substantially intermediate portion of the handle pipe 27 by clampers 37 and screws 38, 38, and the clutch lever 21 is pinned to the clutch rubber holder 36 by pins 39. And the clutch wire 40 may be attached to the clutch lever 21. Of course, the above-described assembling order is an example, and the present invention is not limited to this. The structure after assembly is as shown in FIG.
The occupant can put a finger such as an index finger and a middle finger on the clutch lever 21 while holding the handle grip 34 with the left hand, and at any time, pull the clutch lever 21 in the direction of the arrow in the figure to disengage the clutch. FIG. 5 is a view taken in the direction of arrow 5 in FIG. 2, and FIG. 6 is an exploded view for supplementing FIG. In FIG. 6, a cylinder holder 41 is attached to the left front fork 3L, and is fixed with bolts 42. A flange 43 of the master cylinder 44 is attached to a bracket 43 formed integrally with the cylinder holder 41.
5 is brought into contact with the master cylinder 44, and the rear brake lever 2 is connected to the master cylinder 44 with a pin 47.
2 may be mounted so as to be swingable. The mounting state is as shown in FIG. 5, and the tip of an adjusting bolt 48 attached to the rear brake lever 22 is in contact with the piston 49 of the master cylinder 44 (see FIG. 6). However, since the piston 49 is urged by a spring (not shown), the rear brake lever 22 is rotated counterclockwise in FIG. After being rotated in the counterclockwise direction, the brake lever 22 has a stopper piece 22a (see FIG. 6) that hangs down therefrom.
4 stops by hitting a stopper bolt 50 screwed into the flange portion 45. Accordingly, the rear brake lever 22 can be moved only clockwise as indicated by the arrow in the figure from the position shown in FIG.
Pushes the piston 49 of the master cylinder 44, and applies the brake pressure to a caliper described later. FIG. 7 is a layout view of the rear brake caliper of the present invention, as viewed from the right side of the motorcycle 1.
The right hand in the figure is the front side. The brake disc 52 is connected to a rear cast wheel by bolts 53... The calipers 54 and 55 are attached to the vehicle body with a caliper bracket 56 so that the first caliper 54 and the second caliper 55 face the brake disc 52. Have been. The first caliper 54 is connected to the rear brake pedal 20 via a first pressure guiding hose 57, and the second caliper 55
The rear brake lever 22 is connected via a pressure guiding hose 58. The operation of the rear brake device having the above configuration will be described below. In FIG. 1, the occupant can brake the rear wheel 6 with the first caliper 54 by appropriately depressing the rear brake pedal 20 with the right foot, and press the rear brake lever 22 with the left hand to form the second caliper. Rear wheel 6 at 55
Can be braked. Specifically, in FIG. 2, the rear brake lever 22 is pushed by the thumb 60 of the left hand 59 attached to the handle grip 34. Clutch lever 21 is left hand 5
The finger is operated with a forefinger other than the thumb 60 and a finger such as the middle finger.
Therefore, the left hand can operate the rear brake lever 22 and the clutch lever 21 at the same time. Therefore, the rear brake can be operated while the clutch is disengaged, and the brake can be effectively applied. As described above, the motorcycle 1 of the present embodiment is equipped with the rear brake pedal 20 and the rear brake lever 22, so that the occupant can operate the desired brake means. In this embodiment, the rear brake lever 22
Is attached to the front fork 3L, but is not limited to this. For example, the rear brake lever 22 may be attached to the handle pipe 27. And handle pipe 27
May be one in this embodiment composed of two left and right wheels, or may be a single handle that is continuous left and right. Also, the caliper 54 of FIG.
55 may be one. In this case, the first pressure guiding hose 57 and the second pressure guiding hose 58 may be joined in the middle.
However, a check valve is interposed between the first pressure guiding hose 57 and the second pressure guiding hose 58. Further, the clutch lever 21 and the rear brake operating element 22 may have a stick shape in addition to the grip lever shape of the present embodiment. As described above, according to the present invention, a clutch operator is provided near the handle grip, and a rear brake operator for rear wheel braking is provided near and below the clutch operator. Therefore, the rear wheel can be braked by operating the rear brake operator with the hand that operates the clutch operator. Therefore, when the driving posture is not sufficient or the right foot cannot be used sufficiently, the rear brake can be applied by hand, and the degree of freedom of the braking operation of the motorcycle increases, which is preferable.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a motorcycle according to the present invention. FIG. 2 is a view of a front brake lever of the present invention viewed from an occupant side. FIG. 4 is an exploded view for supplementing FIG. 3 [FIG. 5] A view from arrow 5 in FIG. 2 [FIG. 6] An exploded view for supplementing FIG. 5 [FIG. 7] FIG. Yes, a drawing viewed from the right side of the motorcycle 1. [Description of References] 1 ... motorcycle, 2 ... body frame, 3L ... left front fork, 6 ... rear wheel, 20 ... rear brake pedal, 21 ...
Clutch operator (clutch lever), 22 ... rear brake operator (rear brake lever), 27 ... handle pipe,
34: handle grip, 52: brake disc, 5
4,55 ... Caliper.

Claims (1)

(57) [Claim 1] A clutch operator is provided near a handle grip, and a rear brake operator for rear wheel braking is provided near and below the clutch operator. Characteristic motorcycle braking device.