JPH10338183A - Braking device for bar handle vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain desirable braking force fit for the body condition, performance and application of a bar handle vehicle, in each of a front wheel brake and a rear wheel brake by increasing or decreasing total output load to the front wheel brake and rear wheel brake, from input load of a brake operating element while distributing the input load of the brake operating element as the output load to the front wheel brake and rear wheel brake at the time of interlocking the front wheel brake and rear wheel brake. SOLUTION: A first brake operating element 10 is a divided type brake lever formed of an operating element body 16 and a knocker 17. An output distributor 19 is interposed between a towing side link means 18a and a following side link means 18b. The output distributor 19 is lever mechanism of such constitution that an intermediate part of a rotating lever 50 is pivotally supported to a fixed fulcrum 52 and that the base end of an equalizer lever 51 is pivotally supported to one end of the rotating lever 50 through a floating fulcrum 53. The towing side link means 18a is connected to the intermediate part of the equalizer lever 51, and the tip is brought into contact with the antipiston side face of a lever receiving piece of the knocker 17. The following side link means 18b is connected to the other end of the rotating lever 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake device applicable to various kinds of bar handle vehicles such as motorcycles, three-wheeled vehicles, and three- and four-wheeled buggy vehicles. In the operation of one brake operator, either one of the front wheel brake and the rear wheel brake operates independently, and in the operation of the other brake operator, both the front wheel brake and the rear wheel brake operate in conjunction. The present invention relates to a bar handle vehicle brake device having an operating structure.

[0002]

2. Description of the Related Art A brake device which operates a front wheel brake and a rear wheel brake of a bar handle vehicle in conjunction with each other is disclosed, for example, in Japanese Patent Application Laid-Open No. 5-16862.
This technology adopts a mechanical brake that is activated by the pulling of the driven side linking means for the front wheel brake and the rear wheel brake, and pivotally pivots a pair of brake levers at both ends of the handlebar, An output distributor is disposed in the vicinity of the pivot of one brake lever, and the output distributor is connected to the pair of driven-side linking means, and is opposite to the output distributor with the pivot of the one brake lever interposed therebetween. In addition, a traction-side linking means connected to the other brake lever is connected, so that both the front wheel brake and the rear wheel brake can be operated in conjunction with either one or the other brake lever.

The above-mentioned output distributor is a plate-shaped equalizer lever pivotally supported at a floating fulcrum near the pivot of one of the brake levers. The connecting means for the front wheel brake and the connecting means for the rear wheel brake are connected to each other, and by changing the length from the floating fulcrum to the connecting point of the connecting means for both brakes, the connection to the front wheel brake and the rear wheel brake is made. The output load can be made different.

[0004]

However, in the above-described interlocking type brake device, the input load from the brake lever is simply distributed as the output load to the front wheel brake and the rear wheel brake by the output distributor, so that both brakes are used. Since the output load to the brake cannot be increased or decreased more than the input load, the front and rear wheel brakes
It was not possible to set the braking force according to the vehicle conditions, performance, and purpose of use.

Therefore, the present invention can increase or decrease the output load to the front wheel brake and the rear wheel brake when interlocking the front wheel brake and the rear wheel brake with respect to the input load of the brake operator. As a result, it is an object of the present invention to provide a brake device for a bar handle vehicle that can set a suitable braking force for each of a front wheel brake and a rear wheel brake in accordance with vehicle conditions, performance, and intended use.

[0006]

According to the above-mentioned object, according to the first aspect of the present invention, one of a front wheel brake and a rear wheel brake of a bar handle vehicle is operated by operating a first brake operating member. A hydraulic brake operated by the hydraulic pressure generated in the cylinder is provided, and the other is provided by a mechanical brake operated by traction of the connecting means by operating a second brake operator, and the first brake operator is provided by the hydraulic brake. An actuator body pivotally supported near the pressure master cylinder;
The pusher by the operation of the operation body rotates the pivot about the pivot toward the cylinder hole opening of the hydraulic master cylinder, and is divided into a knocker that pushes the piston of the hydraulic master cylinder into the cylinder hole. The linking means is divided into a traction-side linking means connected to the second brake operator and a driven-side linking means connected to the front wheel brake or the rear wheel brake of the mechanical brake. Between the means and the driven side linking means, an intermediate portion of the rotating lever is pivotally supported at a fixed fulcrum near the hydraulic master cylinder, and the base end of the equalizer lever is provided at one end of the rotating lever as a floating fulcrum. The driven distributor is connected to the other end of the rotating lever, and the traction connecting member is connected to an intermediate portion of the equalizer lever. The tip of the over is characterized in that brought into contact with the opposite piston side of the knocker.

Further, a stopper may be provided for restricting the rotation of the equalizer lever when the equalizer lever is rotated in the direction of the cylinder hole opening of the hydraulic master cylinder.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a motorcycle will be described below with reference to the drawings. 1 is a schematic view of a brake device in a non-operating state, FIG. 2 is a partial cross-sectional plan view showing a non-operating state of a hydraulic master cylinder and a first brake operator, FIG. 3 is a rear view of FIG. 4 is a sectional right side view of FIG. 2, FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG. 6 is a partial sectional plan view of a hydraulic master cylinder and a first brake operator when an independent brake system is operated. FIGS. 7, 7 and 8 are partial cross-sectional plan views of the hydraulic master cylinder and the first brake operator when the interlocking brake system is operated, and FIGS.
FIG. 4 is a partial cross-sectional plan view of the hydraulic master cylinder and the first brake operator when both the independent brake system and the interlocking brake system are operated.

The motorcycle 1 includes a front wheel brake 3 at a lower end of a front fork 2 and a rear wheel brake 5 at a rear end of a swing arm 4, and a handlebar 6 for steering a front wheel (not shown) at an upper end of the front fork 2. An accelerator grip 7 and a fixed grip 8 are provided at the right end and the left end, respectively. The handlebar 6 has an accelerator grip 7
The hydraulic master cylinder 9 and the first brake operator 10 are integrally mounted on the inside of the vehicle body, and the second brake operator 11 is mounted on the inner side of the fixed grip 8 in the vehicle body. The independent brake system 13 that independently operates the front wheel brake 3 when the first brake operator 10 is gripped, and the front wheel brake 3 and the rear wheel brake 5 when the second brake operator 11 is gripped. And an interlocking brake system 14 that operates in conjunction with.

The independent brake system 13 includes the front wheel brake 3, the hydraulic master cylinder 9, and the first brake operator 10
And a hydraulic pressure pipe 15 connecting between the front wheel brake 3 and the hydraulic pressure master cylinder 9. The interlocking brake system 14 includes the front wheel brake 3 and the rear wheel brake 5
And the hydraulic master cylinder 9, the hydraulic pipe 15, the knocker 17 of the first brake operator 10, and the connecting means 18 for the rear wheel brake, and the traction side connecting means of the connecting means 18, 18a and driven side connecting means 18
b and an output distributor 19 interposed therebetween.

The front wheel brake 3 has a disk rotor 20
The hydraulic disc brake which combines the caliper body 21 and the
A trailing-type mechanical drum brake is applied, and a wire cable is used for each of the traction-side connection means 18a and the driven-side connection means 18b of the rear-wheel brake connection means 18.

As the first brake operator 10, a split type brake lever composed of an operator main body 16 and the above-mentioned knocker 17 is used, and as the second brake operator 11,
An integral brake lever is used, and the operator body 16 and the knocker 17 of the first brake operator 10 are pivotally attached to lever brackets 30b, 30b integral with the cylinder body 30 of the hydraulic master cylinder 9 using pivots 31. The lever bracket 3 which is pivotally supported and is attached to the handlebar 6 using the holder 32
3 is pivoted using a pivot 34.

The hydraulic master cylinder 9 is a reservoir-integrated type having a reservoir 35 for storing a hydraulic fluid above a cylindrical cylinder body 30 disposed in front of the handlebar 6. A piston 37 is liquid-tightly and movably inserted into a bottomed cylinder hole 36 provided to the right side of the vehicle body, and a hydraulic chamber 38 is defined between the bottom of the cylinder hole 36 and the piston 37. Has been established. The piston 37 is provided with a return spring 3 contracted in a hydraulic chamber 38.
With the resilience of 9, it is urged in the direction of the opening of the cylinder hole 36, and the retreat limit is restricted by the contact of the first brake operator 10 with the knocker 17.

The cylinder body 30 has a body mounting arm 30a projecting rearward of the vehicle body and holding the handlebar 6 together with the holder 32, and a pair of upper and lower levers projecting forward of the vehicle body at the opening side of the cylinder hole 36. Bracket 30
b, 30b, a lever support arm 30c which also projects forward of the opening of the cylinder hole 36, a first stopper 30d (a stopper according to claim 2 of the present invention), and a second stopper 30e.

The operator body 16 of the first brake operator 10
And the knocker 17 pivotally support the pivoting bases 16a, 17a inserted vertically above and between the lever brackets 30b, 30b of the cylinder body 30 with the pivot 31 as described above, and Grip part 16b
Along the front of the accelerator grip 7 and the knocker 1
7, a piston pressing piece 17b is disposed in front of the opening of the cylinder hole 36, and a rotation restricting piece 16c and a stop lamp switch actuating piece 17c of substantially the same shape project from the front side of the cylinder body 30 on the vehicle body front side. Have been. The knocker 17 protrudes from the rotation base 17a to the lower side of the lower lever bracket 30b,
And a lever receiving piece 17d vertically opposed to the piston pressing piece 17b with respect to the piston receiving piece 17b.
Is displaced slightly below the cylinder hole opening side of the cylinder body 30 inside the vehicle body with respect to the piston pushing piece 17b located near the grip portion 16b of the operation body 16.

The knocker 17 is in the non-operating direction (counterclockwise in FIG. 1) with the pivot 31 as a fulcrum, by the contact between the outer end of the piston 37 protruding from the opening of the cylinder hole 36 and the piston pushing piece 17b. The operation body 16 is also urged in the non-operation direction (counterclockwise in FIG. 1) about the pivot 31 by the contact between the piston pushing piece 17b and the grip portion 16b. The rotation restricting piece 16c of the child main body 16 is a vehicle body front side surface 30f of the cylinder body 30.
, The retreat limit of the operation body 16, the knocker 17, and the piston 37 is restricted. A coil-shaped return spring 40 is provided between the grip part 16b and the piston pressing piece 17b.
The hydraulic pressure chamber 38 is contracted with a set load weaker than that of the return spring 39.
6 and the knocker 17 are urged in the direction away from each other, and at the same time, they are prevented from rattling.

The output distributor 19 is connected to the traction-side connecting means 1.
8a is pulled by the gripping operation of the second brake operator 11,
The traction force of the traction side connecting means 18a is applied to the hydraulic pipe 15 for the front wheel brake and the driven side connecting means 18b for the rear wheel brake.
And a lever mechanism that distributes the input load from the second brake operator 11 as an output load to the front wheel brake hydraulic pressure and the rear wheel brake traction force. Combination of a rear wheel turning lever 50 and a front wheel brake equalizer lever 51 disposed in the vehicle longitudinal direction between the lower part of the handlebar 6 near the pressure master cylinder 9 and the first brake operator 10. It has become.

The rotating lever 50 is provided with an equalizer lever 51.
Are arranged to be overlapped with each other, and an intermediate portion thereof is pivotally supported on a lever support arm 30c of the cylinder body 30 by using a fixed fulcrum 52. The equalizer lever 51 is
A base end 51a bent in a U-shape is pivotally supported at a floating fulcrum 53 with one end 50a of the rotating lever 50 therebetween. The other end 50b of the rotating lever 50 is provided with the driven side connecting means 18b.
The wire end 54 of the traction-side connecting means 18a is connected to an intermediate portion of the equalizer lever 51.

The other end 50b of the rotating lever 50 is disposed below the piston pushing piece 17b of the knocker 17 and behind the second stopper 30e of the cylinder body 30, and the tip 51b of the equalizer lever 51 is Knocker 17
Below the piston pressing piece 17b, the lever receiving piece 17d of the knocker 17 and the first stopper 3 of the cylinder body 30.
0d is located at the rear.

The rotating lever 50 and the equalizer lever 51 are connected to the driven side connecting means 18b or the traction side connecting means 18a.
And an appropriate tension acts from between the equalizer lever 51 and the vehicle body mounting arm 30a of the cylinder body 30.
A return spring 56 having a set load smaller than the tension of the traction-side linking means 18a is contracted. In the non-operating state shown in FIGS. 1 to 5, the other end 50b of the rotating lever 50 is connected to the second end 50b of the cylinder body 30. The distal end 51b of the equalizer lever 51, which is supported by the stopper 30e and is also inactive, is supported on the side opposite to the piston of the lever receiving piece 17d of the knocker 17 that has turned to the retreat limit position, and the distal end 51b of the equalizer lever 51 First stopper 30d of cylinder body 30
Is set between them.

The above-mentioned gap C is provided in the interlocking brake system 14.
When the reaction force from the knocker 17 does not act on the equalizer lever 51 even when the equalizer lever 51 pushes the knocker 17 toward the cylinder hole opening of the hydraulic master cylinder 9 during the operation of the first stopper, the first stopper 30d supports the distal end 51b of the equalizer lever 51 and regulates the rotation of the equalizer lever 51.
1 by applying a reaction force to both levers 50, 50 of the output distributor 19.
51 for operating the equalizer lever 51
Is brought into contact with the first stopper 30d, so that the piston 37
Since the amount of rotation of the knocker 17 that pushes the front wheel is regulated, the gap C is set to a length that can supply sufficient hydraulic fluid to the front wheel brake 3 for normal front wheel braking.

In the operation of the independent brake system 13 using the first brake operator 10, when the operator body 16 is gripped and operated, the operator turns in the operating direction (clockwise in FIG. 6) about the pivot 31 as a fulcrum. The piston pushing piece 17b of the knocker 17 abuts on the grip portion 16b of the main body 16, and the knocker 1
7, while the equalizer lever 51 of the output distributor 19 is left at the non-operation position, the pivot pusher 31 rotates integrally with the operation body 16 in the operation direction with the pivot 31 as a fulcrum, and the piston pushing piece 17
b pushes the piston 37 of the hydraulic master cylinder 9 toward the bottom of the cylinder hole 36 to increase the pressure of the hydraulic fluid in the hydraulic chamber 38. The hydraulic fluid pressurized in the hydraulic chamber 38 is sent from the output port 30g of the bottom wall of the cylinder hole to the caliper body 21 of the front wheel brake 3 through the hydraulic pipe 15, and the caliper body 21 is hydraulically operated, and the hydraulic pressure of the front wheel is reduced. Braking is performed.

In the operation of the interlocking brake system 14 using the second brake operator 11, the second brake operator 11 is grasped and operated, and the traction-side connecting means 18a is moved in the leftward direction of the vehicle body (the left side in FIGS. 7 and 8). Direction), the output distributor 19
Of the knocker 17 at the tip 51b.
7d, the floating fulcrum 53 of the base end 51a is moved about the fixed fulcrum 52 in the operating direction (FIGS. 7 and 8).
(Clockwise direction), and the whole of the equalizer lever 51 moves in the leftward direction of the vehicle body and in the forward direction of the vehicle body (in the upper left direction in FIGS. 7 and 8). The rotating lever 50 rotates in the operating direction (clockwise in FIGS. 7 and 8) around the fixed fulcrum 52 with the rotation of the floating fulcrum 53, and is driven by the other end 50b. The connecting means 18b is pulled.

The knocker 17 of the first brake operator 10 whose lever receiving piece 17d is pushed by the distal end 51b of the equalizer lever 51 turns the pivot 31 in the operating direction with the pivot 31 as a fulcrum, while leaving the operator main body 16 in the non-operating position. To move the piston pushing piece 17b to the piston 37 of the hydraulic master cylinder 9.
To supply the hydraulic fluid in the hydraulic pressure chamber 38 to the caliper body 21 of the front wheel brake 3 in the same manner as in the operation of the independent brake system 13 to brake the front wheels. The tip 51b of the equalizer lever 51 and the cylinder body 30
The distance between the first stopper 30d and the equalizer lever 5
1 is gradually buried as the lever receiving piece 17d of the knocker 17 is pushed and moved, and the equalizer lever 51
At the time when the tip 51b of the abuts against the first stopper 30d,
The rotation of the knocker 17 is restricted (FIG. 8). Further, the driven side linking means 18b pulled by the turning lever 50 turns the operating lever 60 of the rear wheel brake 5, and the operating lever 6
The camshaft 61, which is integral with the brake pedal 0, expands the brake shoes 62, 62 to brake the rear wheels.

In the operation of the interlocking brake system 14 described above, the input load from the second brake operator 11 is distributed by the output distributor 19 as output load to the front wheel brake 3 and the rear wheel brake 5, and The wheel brakes 3, 5 operate in conjunction with each other.

When both the independent brake system 13 and the interlocking brake system 14 are operated, the front wheel brake 3 which is operated by either of the brake systems 13 and 14 has the tip 51b of the equalizer lever 51 having the first end 51b. Until the stopper 30d contacts the first brake operator 1
It is activated by the sum of the gripping operation force of 0 and the second brake operator 11.

FIGS. 9 and 10 show the first brake operating member 1.
In the interlocking brake system 14, the leading end 51b of the equalizer lever 51 of the output distributor 19 is in contact with the first stopper 30d, and the pushing of the knocker 17 is limited. While there are
In the independent brake system 13, the first brake operator 10
When the operator body 16 is strongly squeezed, the knocker 17 rotates greatly, and the piston pushing piece 17b pushes the piston 37, and at the same time, separates from the tip end 51b of the equalizer lever 51.

Next, the operation of the interlocking brake system 14 after the operation of the independent brake system 13 will be described with reference to FIGS.
This will be described with reference to FIGS. In the first operation of the independent brake system 13, the front wheel is braked by the front wheel brake 3 as described above, and the operator main body 16 of the first brake operator 10 rotates the knocker 17 around the pivot 31. The lever receiving piece 17d of the knocker 17 has already been separated from the distal end 51b of the equalizer lever 51 (FIG. 6). In the post-operation of the interlocking brake system 14 following the independent brake system 13, the gripping operation of the second brake operator 11 causes the equalizer lever 51 of the output distributor 19 to be pulled by the traction-side linking means 18a to move the floating fulcrum 53.
The tip 51b rotates counterclockwise in FIG. 6 and receives no reaction force from the hydraulic pressure master cylinder 9 from the knocker 17.
Contact the first stopper 30d of the cylinder body 30.

Due to this contact, a reaction force is generated at the distal end 51b of the equalizer lever 51, and the whole of the equalizer lever 51 towed by the traction side connecting means 18a slides the distal end 51b toward the front of the vehicle body by 30d. By rotating clockwise, the rotating lever 50 connected at the floating fulcrum 53 is rotated around the fixed fulcrum 52 in the operating direction, and
By pulling 8b, the rear wheels are braked (FIGS. 9 and 10).

The caliper body 2 of the front wheel brake 3
In the normal stroke of the piston 37 of the hydraulic master cylinder 9 due to knockback of the piston used in 1 or an increase in the braking gap between the friction pad of the caliper body 21 and the disk rotor 20 by a predetermined amount or more, When the front brake 3 cannot be operated sufficiently, when the second brake operator 11 of the interlocking brake system 14 is gripped and operated, the traction-side linking means 18a causes the output distributor 19 to operate.
Of the vehicle body acts on the equalizer lever 51.

The tip 51b of the equalizer lever 51 towed by the tow-side linking means 18a may or may not act upon the reaction force from the hydraulic master cylinder 9 through the knocker 17. When a reaction force acts on the distal end 51b of the equalizer lever 51, the equalizer lever 51 and the rotation lever 50 operate in the same manner as the operation of the interlocking brake system 14, and the rotation lever 50 By pulling the driven side linking means 18b, the rear wheel brake 5 is actuated, and the rear wheel is braked (FIGS. 7 and 8).

Also, the tip 51b of the equalizer lever 51
When no reaction force acts on the front end 5, the equalizer lever 51 moves
While pushing the lever receiving piece 17d of the knocker 17 with 1b, it rotates counterclockwise in FIG.
The tip 51b is connected to the first stopper 30d of the cylinder body 30.
Contact. After the contact between the tip 51b and the first stopper 30d, after the operation of the independent brake system 13 described above,
Similarly to the case where the interlocking brake system 14 is operated, the equalizer lever 51 and the turning lever 50 are operated, and the turning lever 50 pulls the driven side linking means 18b, so that the rear wheel brake 5 is operated. Thus, the rear wheels are braked (FIGS. 7 and 8).

In the output distributor 19 of this embodiment using the lever mechanism, the input load from the second brake operator 11 is output to the front wheel brake 3 and the rear wheel brake 5 when the interlocking brake system 13 is operated. While distributing as a load,
It is possible to increase or decrease the total output load to the rear wheel brakes 3, 5 from the input load from the second brake operator 11, Wi = input load from the second brake operator 11 Wf = front wheel The output load on the brake 3 Wr = the output load on the rear wheel brake 5 Ws = the load applied to the floating fulcrum 53 L1 = the length between the floating fulcrum 53 and the wire end 54 of the traction side connecting means 18a L2 = from the wire end 54 The tip 51b of the equalizer lever 51 and the first stopper 30d of the cylinder body 30
L3 = Length of the fixed fulcrum 52 and the floating fulcrum 53 L4 = Length of the fixed fulcrum 52 and the wire end 55 of the traction-side linking means 18b, Wi = Wf + Ws ... (1) Expression Ws × L1 = Wf × L2 (2) Expression Ws × L3 = Wr × L4 (3) The following expression holds.

However, as condition 1, the equalizer lever 5
Of the first stopper 30d from the non-operation position.
Until the contact occurs, the input load Wi is distributed at a ratio of Wf: Ws = L1: L2 according to the above equations (1) and (2).
r is determined from the load of Ws and the ratio of L3: L4 from the above equation (3).

As condition 2, the equalizer lever 5
After the first tip 51b abuts on the first stopper 30d, Wi × L2 = Ws × (L1 + L2) (4) Formula Ws × L3 = Wr × L4 (3) Formula Here, since the above equation (4) holds even under the condition 1, the load Ws applied to the floating fulcrum 53 is always the input load Wi regardless of whether or not the tip end 51b of the equalizer lever 51 contacts the first stopper 30d. Has a relationship proportional to

For example, when the input load Wi of the second brake operator 11 is set to 1, the length L1 = L2 = L4 = 1, and the length L3 = 2, the output load Wf = 0 to the front wheel brake 3 is set. .5 output load Wr to the rear wheel brake 5 = 1.0, and the total output load Wf + Wr increases to 1.5 times the input load Wi.

As described above, according to the present embodiment, when the interlocking brake system 14 is operated, the input load of the second brake operator 11 is output by the output distributor 19 to the output load on the front wheel brake 3 and the rear wheel brake 5. And the total output load on the front wheel brake 3 and the rear wheel brake 5 is distributed by the output distributor 19 of the lever mechanism to the second brake operator 11.
The front wheel brake 3 and the rear wheel brake 5 can be set to a more preferable braking force according to the vehicle body conditions and performance set for the motorcycle and the purpose of use for each of the front wheel brake 3 and the rear wheel brake 5. Becomes possible.

Further, in this embodiment, the bar lever vehicle of the output distributor 19 is replaced with the equalizer lever 51, and the lever ratio between the lever 50 and the equalizer lever 51 is changed. Also, without replacing the front and rear brakes with other performances, it is possible to set more suitable braking force inexpensively for the front wheel brake and the rear wheel brake of the target motorcycle, so practical versatility is Extremely high.

In the above-described embodiment, the rotation of the equalizer lever is restricted by contact with the stopper, but the stopper can be omitted. In this case, by allowing the equalizer lever to follow the knocker that rotates toward the cylinder hole opening of the hydraulic master cylinder, the equalizer lever receives a reaction force from the knocker at the rotation limit. be able to.

The hydraulic brake and the mechanical brake may be used for the front wheel brake and the rear wheel brake of a bar handle vehicle in a manner opposite to the above embodiment. Furthermore, the first and second
A brake pedal may be used as the brake operator, and a plurality of rods may be connected or a combination of a wire cable and a rod may be used as the traction-side connecting means and the driven-side connecting means.

[0041]

As described above, according to the first or second aspect of the present invention using the output distributor of the lever mechanism, when the front wheel brake and the rear wheel brake are operated in conjunction with each other, By distributing the input load of the interlocking brake operator as the output load to the front wheel brake and the rear wheel brake by the output distributor, the lever ratio of the lever mechanism used for the output distributor is adjusted, and the front wheel brake and the Since the total output load to the rear wheel brake can be increased or decreased from the input load of the interlocking brake operator, the body condition, performance and use It is possible to set a more preferable braking force according to the purpose.

Also, in the case of an existing bar-handled vehicle, by simply changing the lever ratio of the lever mechanism used in the output distributor, the desired braking force can be reduced by the front wheel brake and the rear wheel brake of the target bar-handled vehicle at low cost. Therefore, the versatility in practical use is extremely high.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a non-operating state of a brake device for a bar handle vehicle showing an embodiment of the present invention.

FIG. 2 is a plan view showing a non-operating state of the brake device for a bar handle vehicle, showing one embodiment of the present invention;

FIG. 3 is a rear view of FIG. 2;

FIG. 4 is a right side view, partially in section, of FIG. 2;

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a partial cross-sectional plan view showing a brake system for a bar handle vehicle according to an embodiment of the present invention, in which only an independent brake system is operated.

FIG. 7 is a partial cross-sectional plan view showing an embodiment of the present invention in which only an interlocking brake system of a brake device for a bar handle vehicle is operated.

FIG. 8 is a partial cross-sectional plan view showing an embodiment of the present invention, in which only an interlocking brake system of a brake device for a bar handle vehicle is operated.

FIG. 9 is a partial cross-sectional plan view of the brake device for a bar handle vehicle showing one embodiment of the present invention when both the independent brake system and the interlocking brake system are operated.

FIG. 10 is a partial cross-sectional plan view of the brake system for a bar handle vehicle showing one embodiment of the present invention when both the independent brake system and the interlocking brake system are operated.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Motorcycle 3 ... Front wheel brake 5 ... Rear wheel brake 6 ... Handlebar 9 ... Hydraulic master cylinder 10 ... 1st brake operator 11 ... 2nd brake operator 12 ... Brake device 13 ... Independent brake system 14 ... Interlocking System brake system 15 ... Hydraulic piping 16 ... Operator body 16b ... Grip portion 16c ... Rotation regulating piece 17 ... Knocker 17b ... Piston pushing piece 17c ... Stop lamp switch actuating piece 17d ... Lever receiving piece 18 ... Rear wheel brake 18a ... traction side connection means 18b ... driven side connection means 19 ... output distributor 20 ... disk rotor 21 ... caliper body 30 ... cylinder body of hydraulic master cylinder 9 30c ... lever support arm 30d ... first stopper 30e: second stopper 31, 34: pivot 36: syringe Hole 37 ... Piston 38 ... Hydraulic pressure chamber 39,40,56 ... Return spring 30f ... Body front side surface 50 ... Rotating lever 50a for rear wheel 50a ... One end 50b ... Other end 51 ... Equalizer lever for front wheel brake 51a ... Base End 51 b… Tip 52 固定 Fixed fulcrum 53 浮動 Floating fulcrum 54 ワ イ ヤ Wire end of traction-side connecting means 18 a 55 ワ イ ヤ Wire end of driven-side connecting means 18 b C 先端 Tip 51 b of equalizer lever 51 and first stopper 30 d of cylinder body 30 L1 ... Length of the floating fulcrum 53 and the wire end 54 of the traction side connecting means 18a L2 ... Length from the wire end 54 to the contact point between the distal end 51b of the equalizer lever 51 and the first stopper 30d of the cylinder body 30 L3: length between the fixed fulcrum 52 and the floating fulcrum 53 L4: wire of the fixed fulcrum 52 and the traction-side connecting means 18b The length of the command 55 Wi ... output load Ws ... load on the floating fulcrum 53 to the output load Wr ... rear wheel brake 5 to the input load Wf ... front wheel brake 3 from the second brake operator 13

Claims (2)

[Claims] 1. One of a front wheel brake and a rear wheel brake of a bar handle vehicle is provided as a hydraulic brake operated by a hydraulic pressure generated in a hydraulic master cylinder by operation of a first brake operator, and the other is provided as a hydraulic brake. An operation body that is pivotally supported by a pivot near the hydraulic master cylinder, while a mechanical brake that is operated by traction of a connecting means by operation of a second brake operation element; The pusher by the operation of the operation body rotates around the pivot about the pivot in the direction of the cylinder hole opening of the hydraulic master cylinder, and is divided into a knocker that pushes the piston of the hydraulic master cylinder into the cylinder hole. The linking means includes a traction-side linking means connected to the second brake operator and a driven-side linking means connected to a front wheel brake or a rear wheel brake of the mechanical brake. The intermediate portion of the rotating lever is pivotally supported at a fixed fulcrum near the hydraulic master cylinder between the traction-side connecting means and the driven-side connecting means, and an equalizer is provided at one end of the rotating lever. An output distributor in which a base end of a lever is pivotally supported at a floating fulcrum is interposed, the driven side connecting means is connected to the other end of the rotating lever, and the traction side connecting means is connected to an intermediate portion of the equalizer lever. And a tip end of the equalizer lever is brought into contact with a side opposite to the piston of the knocker. 2. The bar according to claim 1, further comprising a stopper for restricting the rotation of the equalizer lever when the equalizer lever rotates toward the cylinder hole opening of the hydraulic master cylinder. Brake device for steering wheel vehicles.