JPH11235992A - Brake actuator for bar handle vehicles - Google Patents

Abstract

(57) [Problem] To provide a brake lever provided on a brake operating device of a bar handle vehicle so that a grip margin can be adjusted, and a stop lamp switch attached to the brake lever can be used in a cold region. Also make sure it works. Such a brake operating device has a simple structure, a small number of parts, and can be manufactured as compactly and inexpensively as possible. SOLUTION: A brake lever 6 of a brake operating device 3 is provided.
Is divided into a lever body 20 and a knocker 21. The knocker 21 is pivotally supported on a lever holder by a knocker shaft 22.
The lever body 20 is pivotally supported on the knocker 21 by a lever shaft 23. The lever shaft 23 includes a collar 28 and a set screw. The grip margin adjusting mechanism 7 is interposed between the lever body 20 and the knocker 21. The stop lamp switch 9 is a rotary type. The operator 10 of the stop lamp switch 9 is pivotally supported on the knocker shaft 22. Connecting pin 1 of actuator 10
0b and the lower surface opening of the collar 28 are engaged with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention hydraulically operates a brake of a bar-handle vehicle such as a motorcycle, a three-wheeled vehicle having a steering handlebar at a front portion of a vehicle body, or a three- or four-wheeled buggy. For details on the brake actuator,
The brake lever attached to the handlebar is a two-piece type including a lever body and a knocker, and has a grip margin adjustment mechanism between the lever body and the knocker, and the grip margin adjustment mechanism allows the grip of the handlebar to be adjusted. The present invention relates to a brake operating device for a bar handle vehicle, wherein a grip margin between the brake lever and the brake lever can be changed.

[0002]

2. Description of the Related Art For example, Japanese Patent Publication No. 6-811 discloses a lever device for a bar handle vehicle which operates a brake or a clutch of a motorcycle or the like by hydraulic pressure with a grip margin adjusting mechanism.
There is one disclosed in Japanese Patent Publication No. 5 (JP-A-5)

In this lever device, an operating lever provided in combination with a hydraulic master cylinder is connected to a lever body disposed in front of a handlebar grip and a knocker for pushing a piston of the hydraulic master cylinder. Using two pieces, the knocker is pivotally supported using a knocker shaft on a lever holder that extends from the cylinder body of the hydraulic master cylinder, and the lever body is pivotally supported on the knocker with the lever shaft, and the lever body is gripped. By doing so, the lever body and the knocker can be integrally rotated around the knocker axis. There is a grip margin adjustment mechanism between the lever body and the knocker, and by adjusting this grip margin adjustment mechanism, the grip margin between the handlebar grip and the brake lever lever body can be adjusted to the rider's physique and You can change it to your liking.

When such a lever device is used as a brake actuating device, a stop lamp switch is mounted on the cylinder body of the hydraulic master cylinder, and the brake lever is positioned at the rearward limit such as when a bar-handled vehicle is running. During braking, the knocker of the brake lever pushes the stop lamp switch operator into the switch case to turn off the stop lamp switch, and when braking by gripping the brake lever, the knocker rotates in the operating direction. When the operator moves away from the actuator, a spring in the switch case pushes the operator to turn on the stop lamp switch and turn on the stop lamp at the rear of the vehicle body.

[0005]

By the way, in a brake operating device for a bar-handle vehicle in a cold region such as a snowmobile for running on snow, ice or snow adheres to an operation element of a stop lamp switch or a spring reaction force freezes. A rotary stop lamp switch is used so as not to cause a malfunction due to a decrease in the operation time. This rotary stop lamp switch comprises a switch case attached to a cylinder body of a hydraulic master cylinder, and an actuator pivotally supported by the switch case with a support shaft. By turning the brake lever, the operator of the stop lamp switch is turned on and off.
They are forcibly rotated to the F position.

However, when it is desired to simply combine such a rotary stop lamp switch with the above-described lever device to provide a brake operating device for a bar handle vehicle having a grip allowance adjusting mechanism suitable for cold regions. In addition, the lever device has a lever body, a knocker and a grip margin adjustment mechanism, and the brake lever requires a connection structure for rotating the stop lamp switch actuator,
The number of parts is increased, the structure becomes complicated, the cost becomes a large-sized brake lever, and a large space is occupied for rotating the brake lever.

Therefore, the present invention provides a brake operating device for a bar handle vehicle which can operate a stop lamp switch reliably even in a cold region and can adjust a grip allowance. The purpose is to make it as compact and inexpensive as possible with few parts.

[0008]

According to the present invention, there is provided a brake lever for operating a hydraulic master cylinder mounted on a handlebar, comprising: a lever body disposed in front of a handlebar grip; The hydraulic master cylinder is divided into a knocker that pushes a piston of the hydraulic master cylinder, the knocker is pivotally supported on a cylinder body of the hydraulic master cylinder using a knocker shaft, and the lever body is attached to the knocker by a lever shaft. By pivoting, the lever body and the knocker are integrally rotated around the knocker axis, and a grip margin adjustment mechanism is interposed between the lever body and the knocker, and the grip margin adjustment mechanism is adjusted. In a brake operating device for a bar handle vehicle, wherein a grip allowance between the grip and the lever body is adjustable, a stop lever interlocked with a rotation operation of the brake lever. The switch is a rotary type that is turned on and off by an operator that rotates about an axis, the operator is pivotally supported on the knocker shaft, and the tip of the operator and the lever shaft are engaged in a concave and convex manner. It is characterized by.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 is a sectional view taken along line II of FIG. 3, FIG. 2 is a plan view of a brake operating device for a bar handle vehicle, and FIG. 3 is a sectional view taken along line III-III of FIG.

A handlebar 1 for steering a front wheel at a front portion of a vehicle body of a bar handle vehicle is provided with a brake operating device 3 for operating a rear brake (not shown) at a position inside the vehicle body of a fixed grip 2 at a left end. I have.

The brake actuating device 3 includes a hydraulic master cylinder 4 as a hydraulic pressure generating source and a hydraulic master cylinder 4.
A brake lever 6 as an operating means for generating a hydraulic pressure in the bottom hydraulic chamber of the cylinder body 5 and a grip margin adjusting mechanism 7 for adjusting the grip margin of the brake lever 6. The hydraulic master cylinder 4 includes the handlebar 1
Is held by the mounting arm 5a of the cylinder body 5 and the bracket 8, and the mounting arm 5a and the bracket 8 are bolted to be disposed on the vehicle body front side of the handlebar 1. A rotary stop lamp switch 9 suitable for use in cold climates is provided below the vehicle body of the brake lever 6. When the brake lever 6 is depressed and braked, an actuator 10 of the stop lamp switch 9 is operated. , The stop lamp switch 9 is reliably turned on, and a stop lamp (not shown) at the rear of the vehicle is turned on.

The cylinder body 5 has a reservoir 1 for storing brake fluid in an upper portion thereof, in addition to the vehicle body mounting arm 5a.
2 are integrally provided, a pair of upper and lower lever holders 5b and 5c extend on the front side of the vehicle body, and a connecting boss 5d protrudes on the inner side of the vehicle body. A brake lever 6 is rotatably supported by the lever holders 5b and 5c, and a brake hose 13 connected to a rear brake (not shown) is connected to the connection boss 5d via a hose joint 14. Inside the cylinder body 5, a bottomed cylinder hole 15 is provided in the vehicle body width direction with the bottom wall being on the connection boss portion 5d side.
Is inserted in a liquid-tight and movable manner with the rear end protruding from the opening of the cylinder hole 15.

The brake lever 6 is divided into two parts, a lever body 20 disposed on the front side of the fixed grip 2 and a knocker 21 for pushing the piston 16 in the cylinder body 5 into the cylinder hole 15. Have been. The lever body 20 includes a turning base 20a formed in a U-shaped cross section and a rod-like gripping operation part 20b extending slightly curved from the turning base 20a. A base handle of the gripping operation part 20b is provided. The grip margin adjusting mechanism 7 is attached to the boss 20c protruding toward the bar.

The knocker 21 is formed in a shape in which an operating arm 21b, a stopper arm 21c, and a lever connecting arm 21d protrude in three directions from a rotating base 21a.
1a is inserted between the lever holders 5b and 5c, the working arm 21b is brought into contact with the rear end of the piston 16, and the stopper arm 21c is projected toward the vehicle body front side of the cylinder body 5;
By pivotally supporting the rotation base 21a on the lever holders 5b and 5c with the knocker shaft 22, the knocker 21 is rotatably attached to the cylinder body 5. A resilient force for urging the piston 16 from the bottom of the cylinder hole in the retreat limit direction acts on the working arm 21b that comes into contact with the piston 16, and the knocker 2
1 rotates clockwise in FIG. 2 around the knocker shaft 22 to limit the retreat limit when not in operation by the contact between the stopper arm 21c and the vehicle body front side wall of the cylinder body 5 ( FIG.
State).

The lever connecting arm 21d of the knocker 21 is disposed so as to protrude from the turning base 21a toward the front of the vehicle body beyond the operating arm 21b, and the lever body 20 is turned so as to sandwich the lever connecting arm 21d from above and below. The base 20a is inserted, the pivot base 20a and the lever connecting arm 21d are pivotally supported by the lever shaft 23, and the lever body 20 is rotatably attached to the knocker 21.

A lever return spring 24 using a coil spring is contracted on the front side of the vehicle body between the turning base 20a of the lever body 20 and the lever connecting arm 21d of the knocker 21. A set load smaller than the resilient force that the knocker 21 receives from the piston 16 is set in the lever return spring 24, and the lever main body 20 is rotated counterclockwise in FIG. The head of the adjusting bolt 25 of the grip margin adjusting mechanism 7 is always
Abuts against the anti-piston side wall.

The grip allowance adjusting mechanism 7 includes the adjusting bolt 25 screwed into the boss portion 20c of the grip operating portion 20b,
A lock nut 26 holds the screwed state of the adjustment bolt 25 in contact with the tip end surface of the boss portion 20c. The protrusion length of the adjustment bolt 25 is changed, and the lever body 20 is gripped. By moving the portion 20b in the front-rear direction of the vehicle body, a grip margin between the fixed grip 2 and the grip operation portion 20b of the lever body 20 can be changed.

A small-diameter screw portion 22a on the tip side of the knocker shaft 22 is screwed into the lever holder 5c on the lower side of the vehicle body, and the distal end side of the small-diameter screw portion 22a has a length protruding below the lever holder 5c. A stepped bolt is used, and the operator 10 of the stop lamp switch 9 and the switch case 11 are pivotally connected to the distal end side of the small-diameter screw portion 22a using a nut 27.

The lever shaft 23 has a hexagonal head at the base end.
It is composed of a cylindrical collar 28 having an internal thread formed on the inner peripheral surface on the distal end side, and a set screw 29 combined with the collar 28. Lever connecting arm 21 of lower arm 20a and knocker 21
By inserting the set screw 29 into the collar 28 through the upper arm of the turning base 20a of the lever body 20 from above the vehicle body, the lever body 20 is rotatably supported by the knocker 21 as described above.

The stop lamp switch 9 is provided with an actuator 10
Is disposed on the lever holder side, and the switch case 11 is overlapped with the lower side of the actuator 10, and the switch case 11 is provided with a pin 11 b projecting from a side flange 11 a.
Is fitted to a boss 5d continuously provided on the side of the lever holder 5c on the lower side of the vehicle body and is prevented from rotating. The actuator 10 is
A disk-shaped rotating body that rotates about the knocker shaft 22 and has a connecting pin 10b protruding upward from the vehicle body at the tip of the connecting arm 10a on the outer periphery.

From the center of rotation of the actuator 10, the connecting pin 10b
Is set to the same length as the distance between the centers of the knocker shaft 22 and the lever shaft 23, and the connecting pin 10 b is unevenly engaged with the lower surface opening of the collar 28 of the lever shaft 23. When the main body 20 rotates about the lever shaft 23, the actuator 10 is forcibly rotated about the knocker shaft 22, and the stop lamp switch 9 is turned ON / OF.
F.

Next, the operation of the embodiment configured as described above will be described. When the brake actuating device 3 is not operated by gripping the brake lever 6, the knocker 21 abuts the stopper arm 21 c against the vehicle body front side wall of the cylinder body 5, and the lever body 20 adjusts the adjustment bolt of the grip margin adjusting mechanism 7. 1 and FIG. 2 in which the head 25 is in contact with the opposite piston side wall of the working arm 21b of the knocker 21. FIG.
2 and FIG. 2, a predetermined grip margin is set between the fixed grip 2 and the grip operating section 20a of the lever body 20, and the stop lamp switch 9 is
Is in the inoperative position and is off.

When the lever body 20 of the brake lever 6 is depressed and operated from the inoperative state, the lever body 2
The adjustment bolt 25 of the grip allowance adjustment mechanism 7 provided at 0 pushes the working arm 21b of the knocker 21 in the piston direction, and the lever body 20 and the knocker 21 are integrally formed. It rotates counterclockwise in FIG. The working arm 21b of the knocker 21 that contacts the piston 16 pushes the piston 16 toward the bottom of the cylinder hole 15,
The brake fluid at the bottom of the cylinder hole is pressurized, and the brake fluid is supplied to the rear brake from the brake hose 13 to brake the rear wheels.

The lever body 20 forcibly rotates the operator 10 of the stop lamp switch 9 around the knocker shaft 22 in the operation direction (clockwise in FIG. 1), and the operator 10 rotates from the non-operation position. Then, the stop lamp switch 9 is turned on, and the stop lamp is turned on.

When the gripping operation of the brake lever 6 is released, the piston 16 is pushed back toward the opening by the elastic force from the bottom of the cylinder hole, and the piston 16 pushes back the lever body 20 of the brake lever 6, and the lever body The knocker 21 and the knocker 21 are integrally rotated in the counterclockwise direction in FIGS. 1 and 2, and the stopper arm 21 c of the knocker 21 abuts on the vehicle body front side wall of the cylinder body 5 and returns to the initial position. The lever body 20 moves the actuator 10 of the stop lamp switch 9 in the non-operation direction around the knocker shaft 22 (FIG. 1).
In the counterclockwise direction at the same time)
When 0 returns to the non-operation position, the stop lamp switch 9 is turned off, and the stop lamp is turned off.

When changing the grip allowance between the fixed grip 2 and the lever main body 20, only the lever main body 20 is rotated toward the front of the vehicle body, and the adjustment bolt 2 of the grip allowance adjusting mechanism 7 is adjusted.
5 is separated from the working arm 21b of the knocker 21, the lock nut 26 of the grip margin adjusting mechanism 7 is once loosened, and the adjusting bolt 25 is rotated in the screwing or returning direction to reduce the protrusion length of the adjusting bolt 25. change. Then, the adjusting bolt 25 is re-fixed with the lock nut 26, and the head of the adjusting bolt 25 is brought into contact with the working arm 21b of the knocker 21 again. To adjust the grip allowance to expand or contract.

As described above, the brake operating device 3 of the present embodiment is
Is provided with a grip margin adjustment mechanism 7 and a rotary stop lamp switch 9, so that the grip margin adjustment of the brake lever 6 can be easily performed according to the rider's physique and preference, and the stop ramp switch 9 can be securely operated. When activated, the stop lamp can be turned on.
It is particularly suitable for snowmobiles and bar bundle vehicles in cold regions.

Further, since the actuator 10 of the stop lamp switch 9 is attached using the knocker shaft 22 and the lever shaft 23 in order to interlock with the rotation of the lever body 20,
In order to combine the stop lamp switch 9 with the brake lever 6 with the grip margin adjustment mechanism, the lever body 20
It is not necessary to change the shape such as increasing the size of the knocker 21 or increasing the volume, and the number of parts can be hardly increased. Thereby, while having the grip margin adjustment mechanism 7 and the rotary stop lamp switch 9,
The brake actuating device 3 can be manufactured as lightweight and compact as possible and at a low cost, and has an advantage that the layout on the handlebar 1 is easy and the space occupied around the handlebar is small.

In the above-described embodiment, the knocker shaft is formed as an integral product, and the lever shaft is described as having a collar and a set screw. However, in contrast to the embodiment, the present invention has two or more knocker shafts. It is also possible to configure the lever shaft as an integrated product by using a plurality of parts. The grip allowance adjustment mechanism is not limited to the combination of the adjustment bolt and the lock nut shown in the embodiment,
For example, other structures such as a rotary type that adjusts a grip by rotating an adjustment dial around an axis may be used.

[0030]

According to the brake operating device for a bar handle vehicle of the present invention, a brake lever is pivotally supported on a cylinder body of a hydraulic master cylinder using a knocker shaft, and the brake lever is pivotally mounted on the knocker using a lever shaft. Knocks the actuator using a two-piece stop lamp switch that is linked to the rotation of the brake lever and a rotary type that is turned on and off by an actuator that rotates about an axis. The stop lamp switch is securely mounted while pivoting on the shaft and engaging the tip of the actuator with the lever shaft unevenly, making it easy to adjust the brake lever grip according to the rider's physique and preference. It is suitable for snowmobiles and bar bundle vehicles in cold regions, especially because it can be operated to turn on the stop lamp. It made.

According to the configuration of the present invention,
The brake lever with the grip adjustment mechanism is combined with a rotary stop lamp switch using the knocker shaft and lever shaft, so the lever body and knocker are changed in shape, such as increasing the size and increasing the volume. There is no need to do so, and the number of parts is hardly increased. This makes it possible to manufacture the brake actuating device as light and compact as possible and at a low cost, while having a grip margin adjusting mechanism and a rotary stop lamp switch. There is an advantage that the occupied space around the bar is small.

[Brief description of the drawings]

FIG. 1 is a view showing an example of an embodiment of the present invention taken along line II of FIG. 3;

FIG. 2 is a partial cross-sectional plan view showing a brake operating device according to an embodiment of the present invention attached to a handlebar.

FIG. 3 is a sectional view taken along the line III-III of FIG. 2, showing one embodiment of the present invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Handlebar 2 ... Fixed grip 3 ... Brake actuator 4 ... Hydraulic master cylinder 5 ... Cylinder body 5b, 5c ... Lever holder 6 ... Brake lever 7 ... Adjusting mechanism for gripping margin 9 ... Stop lamp switch 10 ... Actuator 11 ... Switch case 15 ... Cylinder hole 16 ... Piston 20 ... Lever body 20a ... Rotating base 20b ... Grip operation part 20c ... Boss 21 ... Knocker 21a ... Rotating base 21b ... Working arm 21c ... Stopper arm 21d ... Lever connecting arm 22 ... Knocker shaft 22a ... Small diameter screw part 23 ... Lever shaft 24 ... Lever return spring 25 ... Adjustment bolt 26 ... Lock nut 28 ... Collar 29 ... Set screw

Claims (1)

[Claims] 1. A brake lever for operating a hydraulic master cylinder attached to a handlebar, a lever body disposed in front of a grip of the handlebar, and a knocker for pushing a piston of the hydraulic master cylinder. And the knocker is pivotally supported on a cylinder body of the hydraulic master cylinder using a knocker shaft, and the lever body is pivotally supported on the knocker by a lever shaft. Along with rotating integrally around the axis, a grip margin adjusting mechanism is interposed between the lever body and the knocker, and the grip margin between the grip and the lever body can be adjusted by adjusting the grip margin adjusting mechanism. In a brake operating device for a bar handle vehicle, a stop lamp switch interlocked with a rotation operation of the brake lever is operated by an actuator that rotates around an axis. A brake actuating device for a bar handle vehicle, characterized in that it is of a rotary type that is turned on and off, and that the actuator is pivotally supported on the knocker shaft, and the tip of the actuator is engaged with the lever shaft in an uneven manner.