JPH07187048A - Footrest device for motorcycle - Google Patents

Abstract

PURPOSE:To easily manufacture a brake pedal, properly maintain the high strength thereof, enhance the layout quality of parts surrounding the brake pedal concurrently and use the brake pedal for other footrest devices in common. CONSTITUTION:A brake arm 40 is formed as a body separate from a brake pedal 32 and, then, fixed thereto so as to be capable of turn in integrated state. Engagement members such as a return spring for the brake pedal 32 and a switch spring are hooked to the brake arm 40. In this case, a gearing section 44 is provided between the brake pedal 32 and the brake arm 40 for preventing the relative turn thereof. Also, with the gearing section 4 kept in engaged state, a single fastening member 49 is tightened, thereby enabling both of the brake pedal 32 and the brake arm 40 to turn integrated state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a footrest device for a motorcycle in which a brake pedal for operating a rear wheel brake device is configured to rotate around a footrest on which an occupant's foot is placed.

[0002]

2. Description of the Related Art FIG. 7 is a right side view showing a right footrest device of a motorcycle, and FIG. 8 is a VIII-VIII of FIG.
It is sectional drawing which follows the line. This footrest device 100
Footrest bracket attached to body frame 101
Footrests for the occupant's feet before and after 102
103 and a pillion footrest 104 on which the passenger's feet rest
And are provided.

The footrest 103 is fixed to the outside of the footrest bracket 102 by a bolt 105 as shown in FIG. 8, and a brake pedal 106 for operating the rear wheel brake device is rotatably supported coaxially with the footrest 103. Has been done.

The brake pedal 106 is integrally formed with a brake arm 107 extending downward from its shaft support. On the other hand, inside the footrest bracket 102, a master cylinder 108 of the rear wheel braking device is fixed with a bolt 109, and a brake rod 110 extending from this master cylinder 108 is connected to a brake arm via a pin 111.
It is connected to 107.

Therefore, when the occupant depresses the brake pedal 106, the brake pedal 106 is locked by the footrest 103.
Is rotated about the axis, and the brake arm 107 is also integrally rotated to press the brake rod 110. Therefore, the hydraulic pressure in the master cylinder 108 is increased, and the rear wheel braking device operates.

As described above, when the pivotal support portion of the brake pedal 106 is provided coaxially with the footrest 103, the footrest
Brake pedal
Since the tip end portion of 106 follows without shifting, the operability becomes much better than in the case where the pivotal support portion of the brake pedal 106 is provided on a different shaft from the footrest 103. Moreover, since the structure around the shaft support of the brake pedal 106 is simplified, there is an advantage that the aesthetic appearance is greatly improved.

[0007]

However, the brake pedal 106 is provided outside the footrest bracket 102, and the master cylinder 108 is provided on the footrest bracket 10.
Since it is attached to the inside of 2 (for protection in the event of a fall, etc.), the offset amount A of the brake arm 107 with respect to the brake pedal 106 becomes very large, which reduces the forgeability of the brake pedal 106 and manufactures it. However, it is difficult to secure the strength of the brake arm 107.

Further, it is difficult to lock the locking member such as a return spring (not shown) for pulling up the brake pedal 106 or a switch spring for turning on the stop lamp switch to the brake arm 107, and the layout of such peripheral parts is It was difficult.

Further, depending on the shape of the footrest bracket 102, the brake arm 107 and the master cylinder 108
Since the positional relationship of will be determined, the brake pedal 10
6 becomes a dedicated part of the footrest device 100.
Therefore, it is impossible to use the brake pedal 106 for another footrest device, and it is not possible to make the brake pedal 106, which is an expensive forged component, common.

The present invention has been made in order to solve the above-mentioned problems, and has a structure in which the pivotal support portion of the brake pedal is provided coaxially with the footrest, but makes it easier to manufacture the brake pedal and secures high strength. West,
At the same time, it is an object of the present invention to provide a footrest device for a motorcycle in which the layout of peripheral parts of the brake pedal can be improved and the brake pedal can be used in common with other footrest devices.

Another object of the present invention is to provide a footrest device for a motorcycle in which the brake pedal can be easily assembled.

[0012]

To achieve the above object, in a footrest device for a motorcycle according to the present invention, a footrest is fixed to the outside of a footrest bracket attached to the vehicle body, and a brake is provided coaxially with the footrest. A footrest device for a motorcycle, in which a pedal is rotatably supported, and a brake arm provided integrally with the brake pedal for rotation is connected to a master cylinder provided inside the footrest bracket by a brake rod. In the above, the brake arm is formed separately from the brake pedal and is pivotally fixed to the brake pedal, and a locking member such as a return spring of the brake pedal or a switch spring of the stop lamp switch is fixed to the brake arm. Locked.

An engaging portion is provided between the brake pedal and the brake arm to prevent relative rotation between both members.
By fastening a fastening member such as a bolt or a screw in a state where the engagement portion is engaged, the brake pedal and the brake arm are integrally rotated.

[0014]

According to the footrest device for a motorcycle having the above structure, since the brake arm is provided separately from the brake pedal, the brake pedal itself has a structure in which the axial support portion of the brake pedal is provided coaxially with the footrest. Does not have a large offset portion, which dramatically improves the forge-moldability of the brake pedal, facilitates manufacturing, and also improves strength.

Further, since the brake arm can be formed in a relatively free shape, it is possible to make it easy to lock the locking member such as the return spring and the switch spring. Therefore, the layout of the parts around the brake pedal is greatly improved.

Moreover, even if the positional relationship between the brake pedal and the master cylinder is different, it is sufficient to redesign only the brake arm according to the position of the master cylinder and fix it to the brake pedal. The brake pedal can be shared between the two.

Further, when assembling the brake pedal and the brake arm, it suffices to engage the engaging portions provided between the two members and to fasten one fastening member such as a bolt or a screw. Brake arm assembly is very easy.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a right side view showing an example of a motorcycle to which the present invention can be applied.

The motorcycle 1 has a body frame 2 of diamond type, for example. The vehicle body frame 2 includes a frame body 4 formed so as to surround the engine 3 and a seat frame 5 extending rearward from the frame body 4.

A front fork 6 is pivotally mounted on the front head of the vehicle body frame 2 so as to be rotatable left and right, and a front wheel 7 is pivotally supported on the lower end of the front fork 6. A handle bar 8 for steering the front wheel 7 to the left and right is fixed to the upper portion of the front fork 6, and a front fender 9 that covers the front wheel 7 is fixed to an intermediate portion of the front fork 6. The front wheel 7 is provided with a disc-type front wheel brake device 11.

On the other hand, a pivot shaft 12 is erected in the vehicle width direction at a substantially central portion of the body frame 2, and the pivot shaft 12 is provided at the rear end of a swing arm 13 which is rotatable around the pivot shaft 12 and extends rearward. The rear wheel 14 is pivotally supported. The rear wheel 14 is also provided with a disc-type rear wheel braking device 15. The swing arm 13 is suspended by a cushion unit 16.

As described above, the engine 3 is mounted inside the frame body 4, and the carburetor 17 and the air cleaner 18 are sequentially connected to the rear portion of the engine 3. Further, the exhaust muffler 19 of the engine 3 once extends to the front of the engine 3, curves downward, and further extends to the rear. The fuel tank 2 is provided on the upper part of the frame body 4.
0 is installed, and the seat 21 is seated on the seat frame 5.
Is installed.

Now, on the left and right side surfaces of the body frame 2,
A footrest device 24 for mounting the occupants of the motorcycle and the feet of the passengers is provided. FIG. 2 is an enlarged right side view of the right footrest device 24, for example.
FIG. 3 is a sectional view taken along the line III-III in FIG.

The footrest device 24 is provided with a footrest bracket 26 fixed to the lower portion of the vehicle body frame 2 by a bolt 25 and extending rearward. A footrest 27 on which a foot for an occupant is placed is provided at a front portion of the footrest bracket 26. A pillion footrest 28 on which a passenger's foot is placed is provided in the rear part.

As shown in FIG. 3, the footrest 27 is fixed to the outside of the footrest bracket 26 by a bolt 29, and a journal portion 31 provided at the base of the footrest 27 operates a brake for operating the rear wheel braking device 15. A pedal 32 is rotatably supported. That is, the brake pedal 32 functions as the footrest 2
7 is coaxially supported. On the other hand, the master cylinder 33 of the rear wheel braking device 15 is fixed to the inside of the footrest bracket 26 with bolts 34. The body frame 2 is provided with a reservoir tank 35 for the master cylinder 33.

The brake pedal 32 is formed by forging a metal material such as aluminum alloy, and has a bearing portion 36 axially supported by the journal portion 31 of the footrest 27 and the bearing portion 3.
6, an arm portion 37 that extends forward from 6, and the arm portion 37.
And a pedal portion 38 protruding rightward from the tip of the.

As shown in FIGS. 4 and 5, a cylindrical boss 39 extending inward is integrally formed below the bearing 36 of the brake pedal 32. Then, as also shown in FIG. 6, a brake arm 40 formed separately from the brake pedal 32 is fixed to the boss 39 so as to rotate integrally. The brake arm 40 is manufactured by press-molding a steel plate, for example, and has a locking arm portion 41 extending substantially upward and a cylinder arm portion 42 extending rearward.

A meshing portion 44 for preventing relative rotation between the brake pedal 32 and the brake arm 40 is provided between the boss 39 of the brake pedal 32 and the brake arm 40. The meshing portion 44 includes, for example, a pair of step portions 45 formed around the end portion of the boss 39 and the brake arm 39.
And a grip portion 46 that is provided on the stepped portion 45 and meshes closely with the step portion 45. A screw hole 47 is provided on the end surface of the boss 39, and the grip portion 4 of the brake arm 40 is provided.
A through hole 48 is formed in 6 to match the position of the screw hole 47.

The brake arm 40 is connected to the brake pedal 32.
In order to fix the boss 39 to the boss 39, the step portion 45 of the boss 39 and the grip portion 46 of the brake arm 40 are engaged with each other, and a fastening member 49 such as a bolt or a screw from the brake arm 40 side.
Conclude As a result, the brake pedal 32 and the brake arm 40 are integrally rotated.

A brake rod 51 extends from the master cylinder 33, and a free end of the brake rod 51 is connected to a cylinder arm portion 42 of the brake arm 40 via a pin 52. Meanwhile, the brake arm 4
The notch-shaped locking portion 53,
54 is provided, and locking members such as the return spring 55 and the switch spring 56 are locked.

The other end of the return spring 55 is locked by a locking pin 58 provided inside the footrest bracket 26 as shown in FIG. 2, and the brake pedal 32 is pulled up by the urging force of the return spring 55. Be urged by. Also, the switch spring 56
The other end is locked by a stop lamp switch 59 provided on the vehicle body frame 2.

The occupant of the motorcycle 1 is brake pedal 32
When the pedal portion 38 of is depressed, the entire brake pedal 32 rotates about the footrest 27, and the brake arm 4
0 also rotates integrally. Therefore, the cylinder arm portion 42 of the brake arm 40 presses the brake rod 51 of the master cylinder 33 to operate the rear wheel braking device 15. At this time, the locking arm portion 41 of the brake arm 40
Pulls the switch spring 56 to turn on the stop lamp 60 (see FIG. 1) provided at the tail of the motorcycle 1.

When the occupant releases the pedal portion 38, the locking arm portion 41 of the brake arm 49 is pulled back by the urging force of the return spring 55, and the brake pedal 32 is returned to the initial position. At that time, the switch spring 56 is not pulled and the stop lamp 60 is turned off.

According to the footrest device 24 constructed as described above, the brake arm 40 is connected to the brake pedal 3.
2 is provided separately from the brake pedal 32.
Although the shaft support portion of the brake pedal is provided coaxially with the footrest 27, a large offset portion A does not exist in the brake pedal 106 itself unlike the conventional footrest device 100 shown in FIG. 8, and the forgeability of the brake pedal 32 is significantly improved. And the manufacturing is facilitated, and the strength is also improved.

Further, since the brake arm 40 can be formed in a relatively free shape, it is possible to make it easy to lock the locking members such as the return spring 55 and the switch spring 56. Therefore, the layout of the parts around the brake pedal 32 is greatly improved.

Moreover, even if the positional relationship between the brake pedal 32 and the master cylinder 33 is different, it is sufficient to redesign only the brake arm 40 according to the position of the master cylinder 33 and fix it to the brake pedal 32.
In this way, the brake pedal 3 is attached to the other footrest device.
Since the brake pedal 32, which is an expensive forged component, can be shared, the manufacturing cost of the footrest device can be greatly reduced.

Furthermore, when assembling the brake pedal 32 and the brake arm 40, it is sufficient to engage the engaging portion 44 provided between the two members and to fasten the single fastening member 49. Brake arm 4
Assembly of 0 is very easy.

[0038]

As described above, in the footrest device for a motorcycle according to the present invention, the footrest is fixed to the outside of the footrest bracket attached to the vehicle body side,
A brake pedal is rotatably supported coaxially with the footrest, and a brake arm pivotally integrated with the brake pedal and a master cylinder provided inside the footrest bracket are connected by a brake rod. In the footrest device of the motorcycle,
The brake arm is formed separately from the brake pedal and fixed to the brake pedal so as to rotate integrally with the brake pedal. The brake arm is locked with a return spring of the brake pedal, a lock spring switch switch spring, or other locking member. It was done.

As described above, since the brake arm is provided separately from the brake pedal, the brake pedal itself does not have a large offset portion even though the axial support portion of the brake pedal is provided coaxially with the footrest. , Forging and molding of the brake pedal is dramatically improved to facilitate manufacturing, and the strength is also improved.

Further, since the brake arm can be formed in a relatively free shape, it is possible to make it easy to lock the locking member such as the return spring and the switch spring. Therefore, the layout of the parts around the brake pedal is greatly improved.

Moreover, even if the positional relationship between the brake pedal and the master cylinder is different, it is sufficient to redesign only the brake arm according to the position of the master cylinder and fix it to the brake pedal, so that it is not necessary to use another footrest device. The brake pedal can be shared between the two, and it can greatly contribute to the reduction of the manufacturing cost of the footrest device.

Further, the footrest device for a motorcycle according to the present invention is provided between the brake pedal and the brake arm.
A meshing portion is provided to prevent relative rotation between the two members, and a fastening member such as a bolt or a screw is fastened while the meshing portion is meshed to integrally rotate the brake pedal and the brake arm. Therefore, the assembly of the brake pedal and the brake arm becomes very easy.

[Brief description of drawings]

FIG. 1 is a right side view showing an example of a motorcycle to which the present invention can be applied.

FIG. 2 is an enlarged right side view of the footrest device.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is an assembled perspective view of a brake pedal, a brake arm, a master cylinder and the like.

FIG. 5 is an exploded perspective view of a brake pedal, a brake arm, a master cylinder and the like.

FIG. 6 is an exploded perspective view of a boss of a brake pedal, a brake arm, and a fastening member.

FIG. 7 is a right side view of a footrest device showing a conventional technique.

8 is a sectional view taken along line VIII-VIII in FIG.

[Explanation of symbols]

 1 Motorcycle 24 Foot Rest Device 26 Foot Rest Bracket 27 Foot Rest 28 Pelion Foot Rest 32 Brake Pedal 33 Master Cylinder 40 Brake Arm 44 Interlocking Part 45 Step Part Constituting the Interlocking Part 46 Grip Part 49 Conforming the Interlocking Part 49 Fastening Member 51 Brake Rod 55 Return Spring 56 Switch spring

Claims (2)

[Claims] Claims: 1. A footrest is fixed to the outside of a footrest bracket attached to the vehicle body side, a brake pedal is rotatably supported coaxially with the footrest, and a brake integrally provided on the brake pedal. In a footrest device for a motorcycle, in which an arm and a master cylinder provided inside the footrest bracket are connected by a brake rod, the brake arm is formed separately from the brake pedal and pivotally integrated with the brake pedal. A footrest device for a motorcycle, characterized in that a locking member such as a return spring of a brake pedal or a switch spring of a stop lamp switch is locked to the brake arm. 2. A meshing portion for preventing relative rotation between both members is provided between the brake pedal and the brake arm, and a fastening member such as a bolt or a screw is fastened with the meshing portion meshed with each other. The footrest device for a motorcycle according to claim 1, wherein the brake pedal and the brake arm are integrally rotated.