JPH07149273A - Pedal of motorcycle - Google Patents

Abstract

PURPOSE:To surely hold a function to brake rotation of a rear wheel or a function to change a gear even when it travels on an off-road. CONSTITUTION:In a brake pedal 12 of a motorcycle 2 which has an arm part 12a rotatably arranged on a down tube 6 and an operation part 12b arranged in the arm part 12a so as to be operated by the tip of a foot and brakes rotation of a rear wheel, the operation part 12b is situated more rearward in the vehicle lengthwise direction than a rotary center shaft 16 of the arm part 12a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pedal for a motorcycle that brakes rotation of rear wheels or changes gears.

[0002]

2. Description of the Related Art Conventionally, a brake pedal provided in a motorcycle is as shown in FIGS. Figure 7
FIG. 4 is a side view of a motorcycle including a conventional brake pedal. In addition, FIG. 8 is a side view showing a structure around a conventional brake pedal provided in a motorcycle. Further, FIG. 9 is a plan view showing a structure around a conventional brake pedal provided in a motorcycle.

The motorcycle a shown in FIG. 7 has an engine b.
A down tube c extending downward from the front of the engine and supporting the engine b; a vehicle body frame d fixed to the down tube c and extending upward along the rear portion of the engine b; and a vehicle body frame d fixed to the vehicle body frame d. A vehicle body frame e extending rearward and obliquely upward is provided.

The conventional brake pedal f is shown in FIG.
As shown in FIG. 9, an arm portion f1 that is arranged laterally below the engine b and is rotatably attached to the lower portion of the vehicle body frame d, and a vehicle portion that is attached to the tip of this arm portion f1 and It is mainly composed of an operating portion f2 that projects laterally and is operated by the tip of the foot.

The arm portion f1 has a shape bent toward the vehicle side while extending from the rotation center axis f3 toward the vehicle front side. A master cylinder h for operating a hydraulic disc brake for the rear wheels is connected to the rear end of the arm part f1 via a push rod g. The master cylinder h is attached to a bracket i fixed to the vehicle body frame d and the vehicle body frame e. A return spring j is hooked around the rear end of the arm portion f1 near the joint between the down tube c and the vehicle body frame d. In addition, a bracket k is attached to the body frame d at approximately the center of the arm part f1.
The switch spring n of the stoplight switch adjuster m attached via the is locked.

The operating portion f2 is of a retractable type, is rotatably attached to the arm portion f1, and is biased counterclockwise in FIG. 9 by a spring or the like. It should be noted that the reference numeral q in FIGS. 8 and 9 is a foldable step, and the screw member p is attached to the down tube c.
It is attached to a bracket p fixed with 1, p2, etc.

On the other hand, the conventional change pedal is as shown in FIGS. 10 and 11. FIG. 10 is a side view of a motorcycle equipped with a conventional change pedal. FIG. 11 is a schematic view of the change pedal of FIG. 10 seen from below. A conventional change pedal r shown in FIGS. 10 and 11 is for moving a change shaft and is attached to a side portion of an engine b. The arm portion r2 has a shape that is bent toward the vehicle side while extending toward the front of the vehicle, and an operation portion r3 is provided at the tip of the arm portion r2 so as to project toward the vehicle side direction.

[0008]

However, in the above-mentioned conventional brake pedal f and change pedal r,
The arm portions f1 and r2 have their rotation center axes f3 and
Since it has a shape that bends to the side of the vehicle while extending from r1 toward the front of the vehicle, it may be bent as shown by the imaginary lines in FIGS. 9 and 11 when the vehicle falls while traveling. is there.

Further, there is a gap between the arm portions f1 and r2 and the side portion of the vehicle, which is open in the traveling direction as indicated by reference numeral t in FIGS. When falling, foreign matter is likely to be caught in the gap t.

Especially in off-road vehicles, in deep ruts,
Since the vehicle travels on rough terrain with many stones, bushes, and the like, it is easy to fall, so the arm portion of the pedal is easily bent, and foreign matter is likely to enter the gap t. Therefore, the brake pedal, the change pedal, or the vehicle body may be damaged and the pedal may be damaged.

Further, conventionally, by adopting the retractable operation parts f2 and r3 as shown in FIGS. 12 and 13 for the brake pedal f and the change pedal r, it is possible to prevent the deformation of the operation part when the vehicle falls. However, there is no countermeasure against bending of the pedal arm or adhesion of foreign matter.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to brake the rotation of the rear wheels of a pedal of a motorcycle even when the vehicle travels on an uneven terrain and falls. It is an object of the present invention to provide a pedal for a motorcycle that surely retains the function to perform or the function to change gears.

[0013]

The present invention has the following constitution in order to achieve the above object. That is, the invention of claim 1 has an arm portion rotatably provided on a side portion of the vehicle, and an operation portion provided on the arm portion and operated by a foot tip, thereby rotating the rear wheel. In a motorcycle pedal that performs braking or gear change, the operating portion is located rearward of the center of rotation of the arm portion in the vehicle length direction. .

According to a second aspect of the invention, one end is connected to the front part of the engine and extends while curving toward the side of the vehicle.
Further, the rotation center portion of the arm portion and the arm portion are connected to the rear of the curved portion of the exhaust expansion pipe extending toward the rear portion of the vehicle and inside the outer portion of the curved portion in a vehicle front view. The motorcycle pedal according to claim 1, further comprising a master cylinder.

[0015]

According to the first aspect of the invention, since the operating portion is located rearward of the center of rotation in the vehicle length direction, the shape of the arm portion extends rearward from the center of rotation, so that the vehicle is running. Even if the vehicle falls and the arm portion receives a force directed toward the rear of the vehicle, the arm portion can release this force along the extending direction of the arm portion. Further, the gap between the side portion of the vehicle and the arm portion is in the direction opposite to the traveling direction (the rear of the vehicle)
Since it opens toward, it is difficult for foreign matter to enter this gap when traveling or falling.

[0016] Therefore, in particular, even in an off-road vehicle or the like, the pedal arm portion is difficult to bend even when the vehicle falls over in a deep rut, on a rough terrain such as a rocky terrain or on a bush, Therefore, it becomes difficult for foreign matter to enter the gap. Therefore, the pedals and the vehicle body are not seriously damaged.

Further, the center of rotation of the arm portion and the master cylinder connected to the arm portion are arranged behind the curved portion of the exhaust expansion pipe and inside the outer portion of the curved portion in front view of the vehicle. Therefore, the pedal and the master cylinder can be reliably protected by the exhaust expansion pipe.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a motorcycle including a brake pedal according to an embodiment. FIG. 2 is a side view showing the structure around the brake pedal according to the embodiment. FIG. 3 is a plan view showing the structure around the brake pedal according to the embodiment. FIG. 4 is a schematic diagram showing a brake pedal and a brake drum according to a modified example of the embodiment.

In the motorcycle 2 shown in FIG. 1, a down tube 6 extending downward from a front portion of a two-cycle engine 4 and supporting the engine 4, and a down tube 6 fixed to the down tube 6 and extending along a rear portion of the engine 4. As described above, the body frame 8 extending upward and the body frame 10 fixed to the body frame 8 and extending rearward and obliquely upward are provided.

As shown in FIGS. 2 and 3, the brake pedal 12 is disposed on the side of the front portion of the engine 4 (side portion of the vehicle) and is rotatable on the front portion of the down tube 6. The attached arm portion 12a and the arm portion 12a
And an operation unit 12b provided on the
This is to brake the rotation of the rear wheels.

The arm portion 12a is rotatable by a rotation center shaft (rotation center portion) 16 inserted into the through hole 14a of the bearing portion 14 fixed to the down tube 6. Further, the shape of the arm portion 12a is a shape that extends rearward from the rotation center shaft 16 while bending to the side of the vehicle.

The operating portion 12b is located rearward of the rotation center shaft 16 of the arm portion 12a in the vehicle length direction, and is provided at the rear end portion of the arm portion 12a. Further, the operation portion 12b has a pin 12b1, is of a retractable type, and is rotatable in a direction indicated by reference numeral 18 (see FIG. 3).

A master cylinder 22 for operating a hydraulic disc brake for the rear wheels is connected to the front end of the arm 12 via a push rod 20. The master cylinder 22 is attached to the front portion of the down tube 6 by a bracket or the like.

Further, in this embodiment, one end is connected to the front portion of the engine 4 and extends toward the side of the vehicle (between the rear surface and the front surface in FIG. 2) while curving, and further toward the rear portion of the vehicle. Bent portion 24a of the extended exhaust expansion pipe 24
Of the rotation center axis 16 of the arm portion 12a, and inward of the outside of the bending portion 24a in the front view of the vehicle,
A master cylinder 22 connected to the arm portion 12a is arranged.

In addition, in the substantially central portion of the arm portion 12a,
The switch spring 28 of the stoplight switch adjuster 26 is locked. 2 and 3, the reference numeral 30 is a foldable step,
It is attached to the bracket 32 fixed to the down tube 6 with screw members 32a, 32b and the like.

According to the brake pedal 12 of the present embodiment having the above-mentioned structure, the operating portion 12b is located rearward of the rotation center shaft 16 in the vehicle length direction, and the shape of the arm portion 12a is changed. Since it is arranged so as to extend rearward from the rotation center shaft 16 while bending to the side of the vehicle, the vehicle falls over while the vehicle is running, and the arm portion 12a is indicated by reference numeral 3 in FIG.
Even if a force in the direction indicated by 4 is received, the arm portion 12a can release this force along the extending direction of the arm portion 12a. Further, since the gap 36 between the side portion of the vehicle and the arm portion 12a is open in the direction opposite to the traveling direction (the rear of the vehicle), it is difficult for foreign matter to enter the gap 36 during traveling or when the vehicle falls.

Therefore, the brake pedal 12 can be used even in a deep rut, running on rough terrain with many stones, bushes, or the like, especially in an off-road vehicle.
The arm portion 12a of the is difficult to bend, and the gap 36
Foreign matter is hard to enter. Therefore, the brake pedal 12 and the vehicle body will not be seriously damaged. Also,
In addition to this, since the retractable operation unit 12b is employed, damage can be almost eliminated.

Further, the rotation center shaft 1 of the arm portion 12a
6, and the master cylinder 22 connected to the arm portion 12a is surrounded by the curved portion 24a of the exhaust expansion pipe 24, so that the brake pedal 12 and the master cylinder 22 can be reliably protected by the exhaust expansion pipe 24. . Therefore, even when traveling on rough terrain, the brake pedal 12 is not damaged, so that the function of braking the rotation of the rear wheels can be reliably retained.

The brake pedal 12 described above is used.
Is an example used in a hydraulic disc brake having a master cylinder 22, but the present invention is not limited to this, and as shown in FIG. 4, the brake pedal is a mechanical drum brake via a link mechanism. May be used for.

That is, the brake pedal 12 shown in FIG.
A is an operating portion 12A, similar to the brake pedal 12.
b is positioned rearward of the rotation center shaft 12Ac in the vehicle length direction, and the shape of the arm portion 12Aa is changed to the rotation center shaft 16A.
The arm portion 12Aa has a shape that extends rearward from the vehicle A while bending to the side of the vehicle. On the other hand, the arm portion 12Aa attaches a brake wire or brake rod indicated by reference numeral 41 to the brake arm 40 of the brake drum 38 attached to the rear wheel 36. It is connected through.

Therefore, with such a structure, even if the pedal of the present invention is applied to a brake pedal of a mechanical drum brake, the same effect as the brake pedal 12 used for the hydraulic disc brake can be obtained. it can. In addition,
The present invention is also applicable to mechanical disc brakes.
It can also be applied to mechanical drum brakes.

Next, the change pedal according to the embodiment of the present invention will be described. FIG. 5 is a side view of a motorcycle including a change pedal according to the embodiment. In addition, FIG.
FIG. 6 is a schematic view of the change pedal of FIG. 5 viewed from below.

As shown in FIGS. 5 and 6, the chain pedal 42 according to this embodiment is disposed laterally below the engine 4 of the motorcycle 2 and is rotatably attached to the down tube 6. Arm portion 42a and the arm portion 4
2a is provided and is operated by the tip of the foot, and a gear change is performed.

The arm portion 42a is shaped so as to extend rearward from the rotation center shaft 46 while bending laterally of the vehicle. The operation portion 42b is located rearward of the rotation center shaft 46 of the arm portion 42a in the vehicle length direction, and is provided at the rear end portion of the arm portion 42a. The operating portion 42b is foldable.

A cam 48 for rotating the change shaft is attached to a side portion of the engine 4, and the shift rod 50 connects the cam 48 and the chain pedal 42. When changing gears, the operating portion 42b of the change pedal 42 is operated with the tip of the foot to move the arm portion 42a, the shift rod 50, and the cam 48.
Move the change shaft through the link mechanism consisting of.

Therefore, according to the chain pedal 42 of this embodiment, the operating portion 42b is located rearward of the rotation center shaft 46 in the vehicle length direction, and the shape of the arm portion 42a is changed to the rotation center shaft. Since the vehicle has a shape extending from 46 to the rear while bending to the side of the vehicle, it is assumed that, like the brake pedal 12, the vehicle falls while the arm portion 42a receives a force in the direction indicated by reference numeral 52 in FIG. Arm part 42
a can release this force.

Further, since the gap 54 between the side portion of the vehicle and the arm portion 42a is open in the direction opposite to the traveling direction (rear of the vehicle), foreign matter is contained in the gap 54 during traveling or when the vehicle falls. It is hard to enter. Therefore, even when traveling on rough terrain, the function of gear change for moving the change shaft can be reliably retained.

The present embodiment is a preferred embodiment of the present invention, and the technical scope of the present invention is not limited to this embodiment. For example, in this embodiment, an example in which the pedal of the present invention is used in a motorcycle equipped with a two-cycle engine is shown, but the pedal of the present invention is also applicable to a motorcycle having a four-cycle engine.

[0039]

As described above, according to the pedal of the motorcycle of the present invention, it is possible to prevent the pedal or the like from being largely deformed even if the vehicle falls over while traveling.
Further, it is possible to prevent foreign matter from adhering to the gap between the side portion of the vehicle and the arm portion during traveling or when the vehicle falls. Furthermore, the pedal and the master cylinder can be reliably protected by the exhaust expansion pipe. Therefore, even when traveling on rough terrain, the function of braking the rotation of the rear wheels or the function of changing gears can be reliably retained.

[Brief description of drawings]

FIG. 1 is a side view of a motorcycle including a brake pedal according to an embodiment.

FIG. 2 is a side view showing a structure around a brake pedal according to an embodiment.

FIG. 3 is a plan view showing a structure around a brake pedal according to an embodiment.

FIG. 4 is a schematic view showing a brake pedal and a brake drum according to a modified example of the embodiment.

FIG. 5 is a side view of the motorcycle including the change pedal according to the embodiment.

FIG. 6 is a schematic view of the change pedal of FIG. 5 viewed from below.

FIG. 7 is a side view of a motorcycle including a conventional brake pedal.

FIG. 8 is a side view showing a structure around a conventional brake pedal included in a motorcycle.

FIG. 9 is a plan view showing a structure around a conventional brake pedal provided in a motorcycle.

FIG. 10 is a side view of a motorcycle including a conventional change pedal.

FIG. 11 is a schematic view of the change pedal of FIG. 10 viewed from below.

FIG. 12 is a perspective view of a conventional reachable brake pedal.

FIG. 13 is a perspective view of a conventional changeable pedal.

[Explanation of symbols]

 2 motorcycle 4 engine 6 down tube (vehicle side part) 12, 12A brake pedal (pedal) 12a, 12Aa arm part 12b, 12Ab operation part 16, 16A rotation center axis (rotation center part) 22 master cylinder 24 exhaust Expansion tube 24a Curved part 36 Rear wheel 42 Change pedal (pedal) 42a Arm part 42b Operation part 46 Rotation center axis (rotation center part)

Claims (2)

[Claims] 1. An arm portion rotatably provided on a side portion of a vehicle, and an operation portion provided on the arm portion and operated by a toe, for braking rotation of rear wheels or gears. A motorcycle pedal that performs a change, wherein the operation portion is located rearward of a center of rotation of the arm portion in a vehicle length direction. 2. An exhaust expansion pipe having one end connected to a front portion of the engine and extending while curving toward a side of the vehicle, and further extending toward a rear portion of the vehicle, and in a front view of the vehicle. The pedal of the motorcycle according to claim 1, wherein a rotation center portion of the arm portion and a master cylinder connected to the arm portion are disposed inside the outside of the curved portion.