JPH08114244A - Hydraulic master cylinder device for bar handle vehicle - Google Patents

Abstract

PURPOSE: To enable a lever ratio to be changed without changing the setting angle and gripping allowance of a brake lever, while preventing the press center of a piston pressing part form getting out of the center shaft of the piston with a change in the lever ratio. CONSTITUTION: Three pin holes 21a, 21b, 21c having different lengths relative to a piston pressing point P of a spherical head 16a of a push rod 16 are formed in a mounting side base 8a of the brake lever 8 along the longitudinal direction of the mounting side base 8a to provide a pin hole row 21. Through holes sized to include the pin hole row 21 are obliquely provided in respective upper and lower lever mounting arms. One of two lever pins is inserted selectively into one of pin holes in the pin hole row 21 and further the lever pin is inserted into the through hole of the lever mounting arm and fixed by a set-screw.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a motorcycle, a tricycle and a tricycle.
Fluid consisting of a combination of a hydraulic master cylinder that supplies boosted hydraulic fluid to a hydraulic clutch or brake of a bar-handle vehicle such as a four-wheel buggy vehicle, and an operating lever that boosts the hydraulic fluid in the hydraulic master cylinder. The present invention relates to a pressure master cylinder device, and more particularly, to a hydraulic master cylinder device for a bar handle vehicle that can change a lever ratio without changing a posture of an operation lever with respect to a bar handle.

[0002]

2. Description of the Related Art As a hydraulic master cylinder device used for a bar handle vehicle such as a motorcycle, for example, Japanese Patent Publication No.
There is one disclosed in Japanese Patent Publication No. 6-18432. In this technique, a lever pin for mounting a brake lever is attached to a mounting bracket so that it can be fixed at an arbitrary angular position, and a brake lever is pivotally attached to an eccentric shaft portion of the lever pin. By deviating the lever pin in the circumferential direction, the length from the lever pin to the grip of the brake lever as well as the length from the lever pin to the piston pressing part of the brake lever, that is, the change of the lever ratio, and the change of the bar handle and the brake lever The interval, that is, the grip allowance of the brake lever can be changed.

[0003]

SUMMARY OF THE INVENTION With such a configuration,
If you want to change only the lever ratio of the brake lever,
This causes a problem that the grip allowance changes in conjunction with each other, and the change in the grip allowance causes the brake lever to be set at a different angle with respect to the bar handle. Further, with the rotation adjustment of the lever pin, the pressing center of the piston pressing portion deviates from the central axis of the piston, and the piston is damaged due to an unbalanced load, or the piston pressing force set for the brake lever cannot be sufficiently exerted. There is a risk.

Therefore, the present invention provides a hydraulic master cylinder device for a bar handle vehicle in which the lever ratio of the brake lever and the clutch lever can be changed without changing the other form set in the brake lever. Is intended.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a lever mounting arm of a hydraulic master cylinder fixed to a bar handle is pivotally supported by a lever pin at a base portion on a mounting side of an operating lever. Then, in the hydraulic master cylinder device for a bar handle vehicle for pushing the piston inserted in the cylinder hole of the hydraulic master cylinder by the piston pressing portion of the operating lever, in the mounting side base portion of the operating lever, A plurality of pin holes having different lengths from the piston pressing portion are arranged and provided, and the lever mounting arm is provided with through holes corresponding to the pin hole row of the operation lever.
The lever pin is selectively inserted into any one of the pin holes of the pin hole row of the operation lever, and the lever pin is inserted into the through hole of the lever mounting arm and screwed.

Further, in the second invention, the pin hole row of the operating lever of the first invention is formed along the longitudinal direction of the mounting side base portion.

[0007]

The lever ratio is changed by replacing the lever pin with another pin hole in the pin hole row. The length of each pin hole from the piston pressing part is set differently.Therefore, by replacing the lever pin, the length from the lever pin which is the pivot point to the grip part of the operating lever, and also from the lever pin to the piston pressing part. The length to the department is changed.

Since the through hole of the lever mounting arm is provided corresponding to the pin hole row of the operation lever, even if the lever pin is replaced with any pin hole to change the lever ratio, the operation lever for the bar handle is changed. The other forms set on the bar handle, such as the setting angle and the grip allowance, do not change.

Further, as in the second aspect of the invention, if the pin hole row of the operating lever is formed along the longitudinal direction of the mounting side base,
The rigidity required for the mounting base can be ensured without increasing the area of the mounting base for forming the pin hole row.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is applied to a hydraulic master cylinder device for a front brake of a bar handle vehicle will be described below with reference to FIGS. The hydraulic master cylinder device 1 includes a hydraulic master cylinder 4 mounted in proximity to an accelerator grip 3 arranged at the right end of a steering bar handle 2, and a lever pin on a cylinder body 5 of the hydraulic master cylinder 4. A brake lever 8 pivotally supported by either one of 6 and 7, and an adjusting mechanism 9 interposed between the brake lever 8 and the hydraulic master cylinder 4.
It consists of

In the hydraulic master cylinder 4, the above-mentioned cylinder body 5 and the holder 1 which is a separate body from the integral bracket portion 5a.
Cylinder body 5 is a vertical type that is fixedly attached to the bar handle 2 with 0 and protrudes from the bar handle 2 toward the front of the vehicle body.
A piston 12 is liquid-tightly and movably inserted into a cylinder hole 11 provided at the front end of the piston 1.
A hydraulic chamber (not shown) is defined between 2 and the bottom of the cylinder hole 11.

A return spring 13 is contracted between the bottom wall of the cylinder hole 11 and the spring accommodating recess 12a of the piston 12, and the piston 12 is moved by the elastic force of the return spring 13 to move the cylinder hole 11 into the cylinder hole 11. It is urged toward the opening, and its retreat limit is regulated by contact with the rod support member 15 which is attached to the opening of the cylinder hole 11 by the retaining ring 14. A locking hole 15a is formed at the center of the rod support member 15 so as to penetrate therethrough.
The spherical head portion 16a of the push rod 16 of the adjusting mechanism 9 is locked to a by preventing it from coming off.

An outlet port 17 communicating with the hydraulic chamber is opened in the upper wall of the cylinder body 5, so that the hydraulic fluid pressurized to the hydraulic chamber by the operation of gripping the brake lever 8 can be
The brake hose connected to the outlet port 17 supplies the front brake.
Further, on the upper wall of the cylinder body 5, a connecting hose 19 is connected to an inlet port 18 communicating with the cylinder hole 11 by using a connecting connector 20, and the cylinder hole 11 is separately provided through the connecting hose 19. By communicating with a reservoir (not shown) provided, the hydraulic fluid in the reservoir can be replenished to the cylinder hole 11 at any time.

A pair of upper and lower lever mounting arms 5b and 5c are formed so as to project forward toward the front center of the cylinder body 5, and the brake lever 8 has a mounting side base 8a and a lever mounting arm 5b. , 5c, and is rotatably supported by using one of the lever pins 6 and 7, and the grip portion 8b on the tip side is disposed in front of the accelerator grip 3 so as to face it. When the grip portion 8b of the brake lever 8 is gripped and operated for gripping during braking, the brake lever 8 rotates in the direction of the bar handle 2 using one of the lever pins 6 and 7 as a fulcrum, and the adjusting mechanism 9
The piston 12 is pushed toward the bottom of the cylinder hole 11 via the push rod 16 to increase the pressure of the hydraulic fluid in the hydraulic chamber. The hydraulic fluid pressurized in the hydraulic chamber is supplied from the outlet port 17 to the front brake through the brake hose, and hydraulically operates the front brake to brake the front wheels.

The mounting side base portion 8a of the brake lever 8 is
The upper and lower surfaces have steps, respectively, and are slightly thinner than the other portions. A pin hole row 21 in which three pin holes 21a, 21b, 21c are continuous in a straight line is attached to the mounting side base portion 8a. It is formed along the longitudinal direction of the side base portion 8a. A collar hole 22 is formed through the brake lever 8 in the thickness direction thereof in the vicinity of the mounting base 8a, and a rod through hole 23 is formed through the collar hole 22 in the width direction of the brake lever 8. There is.

The lever mounting arm 5b of the cylinder body 5,
Through holes 24a and 24b are provided at the same position in the vertical direction in 5c. The through holes 24a and 24b are oval-shaped having a size including the pin hole row 21 of the brake lever 8. The lever mounting arms 5b and 5c are arranged so that the vehicle body center side is closer to the bar handle 2 and the vehicle body outer side is away from the bar bundle 2. Is arranged in the tilt direction.

For mounting the brake lever 8, the above-mentioned 2 is used.
Lever pins 6, 7 and two kinds of spacers 25, 26
And the lock nut 27 are used. One lever pin 6 is used for the central pin hole 21b of the pin hole row 21, and the other lever pin 7 is used for the pin holes 21 on both sides.
The pin holes 21a to 21c selected according to the lever ratio are used depending on which one is used.

The lever pins 6 and 7 are the lever mounting arm 5
b and 5c through holes 24a and 24b, oval shaft portions 6a and 7a having the same outer shape, oval flanges 6b and 7b extending to the outer periphery of the outer end surfaces of the oval shaft portions 6a and 7a, and the oval shaft portion 6
The guide shaft portions 6c and 7c have a medium diameter and the screw portions 6d and 7d have a small diameter. Further, one lever pin 6 has a guide shaft portion 6c and a screw portion 6d provided on the central axis of the lever pin 6, while the other lever pin 7 has a guide shaft portion 7c and a screw portion 7d.
d and o are the elliptical shaft portion 7 deviated from the central axis of the lever pin 7.
The difference is that it is displaced to one side of a. Insertion holes 6e and 7e are formed through the central axes of the lever pins 6 and 7, and in a race or the like, a wire is inserted into the insertion holes 6e and 7e so that the lever can be replaced reliably in a short time. .

The spacers 25 and 26 have an oval shaft portion 25 having the same shape as the oval shaft portions 6a and 7a of the lever pins 6 and 7, respectively.
a, 26a and the flange 6 of the lever pins 6 and 7 as well
b, 7b and flanges 25b, 26b having the same shape, and a spacer 25 having a pin hole 25c formed in the center thereof.
Is combined with one lever pin 6 and the pin hole 26
The spacer 26, which is provided by displacing c on one side, is combined with the other lever pin 7.

When the brake lever 8 is mounted, the pin hole row 21 is aligned with the through holes 24a and 24b of the lever mounting arms 5b and 5c. Then, for example, when the brake lever 8 is supported in the central pin hole 21b, the combination of the lever pin 6, the spacer 25, and the lock nut 27 is used as described above. The spacer 25 includes the elliptical shaft portion 25a and the lower lever mounting arm 5c.
It is accommodated in the through hole 24b from below and is set by abutting the flange 25b on the lower surface of the lever mounting arm 5c. The lever pin 6 is inserted from above into the through hole 24a of the lever mounting arm 5b with the threaded portion 6d at the tip, and the oval shaft 6a is inserted through the through hole 24a of the upper lever mounting arm 5b.
Then, the guide shaft portions 6c are respectively inserted into the pin holes 21b at the center of the brake lever 8, and the flange 6b is brought into contact with the upper surface of the lever mounting arm 5b. Screw part 6 of lever pin 6
d is the pin hole 25c of the oval shaft portion 25a of the spacer 25.
The lock lever 27 is screwed onto the tip of the threaded portion 6d that penetrates through the spacer 25 and projects downwardly of the spacer 25, so that the brake lever 8 is attached with the pin hole 21b as a fulcrum (see FIGS. 1, 2 and 3). ).

On the other hand, when the brake lever 8 is supported in the pin holes 21a and 21c on both sides, the combination of the lever pin 7, the spacer 26 and the lock nut 27 is used as described above. The insertion direction of the lever pin 7 and the spacer 26 into the through holes 24a, 24b of the lever mounting arms 5b, 5c is determined depending on which of the pin holes 21a, 21c is used. For example, when the pin hole 21a is used, the guide shaft portion 7c and the screw portion 7d of the lever pin 7 and the pin hole 26c of the spacer 26 are respectively aligned with the pin hole 21a of the brake lever 8 and the above-mentioned center is used. The brake lever 8 is attached to the pin hole 21a as a fulcrum by the same procedure as in the case of the pin hole 21b (see FIGS. 4 and 5).

Guide shafts 6c, 7 of the lever pins 6, 7
c, the screw portions 6d and 7d and the pin holes 21a to 21c, 25c and 26c of the brake lever 8 and the spacers 25 and 26 are circular, whereas the through holes 24a and 24b of the lever mounting arms 5b and 5c are oval. However, since the oval shaft portions 6a, 7a of the lever pins 6, 7 and the oval shaft portions 25a, 26a of the spacers 25, 26 fill the through holes 24a, 24b without a gap, the lock nut 27 is screwed. When doing, the lever pins 6 and 7 do not rotate together, and the lever pins 6 and 7 after mounting do not rattle.

In the brake lever 8 thus mounted, the pin hole array 21 is aligned with the through holes 24a and 24b so that the pin hole 21c is close to the bar handle 2 and the pin hole 21a is close to the bar handle 2. The pin holes 21a, 21b, 2 are arranged in a tilting direction away from
From 1c to the piston pressing point P at the tip of the spherical head portion 16a of the push rod 16 which is the point of action of the brake lever 8, different lengths are set.

Further, the ratio of the length from the lever pin 6,7 serving as the pivotal fulcrum of the brake lever 8 to the grip portion 8b and the length from the lever pin 6,7 to the piston pressing point P of the push rod 16 is the brake lever. The lever ratio is 8 and the central pin hole 21b is formed by using the lever pin 6.
If the basic structure is such that the brake lever 8 is pivotally supported on the brake lever 8, the lever pin 7 is used to insert the brake lever 8 into the pin hole 21a.
When the brake lever 8 is pivotally supported, a lever ratio larger than that of the basic type is set, and when the brake lever 8 is pivotally supported by the lever pin 7 in the pin hole 21c, a lever ratio smaller than that of the basic type is set.

The adjusting mechanism 9 has a structure for adjusting the grip margin of the brake lever 8 described above, and is rotatably accommodated in the rod supporting member 15 and the push rod 16 and the collar hole 22 of the brake lever 8. The collar 28 and the rotation stopping means 29 provided on the collar 8 are provided. The above-mentioned spherical head portion 16a, which serves as a piston pressing portion of the present invention, is integrally formed at one end of the push rod 16, and a knob 16b for rotation is screwed at the other end of the push rod 16. Along with the male thread 16c, four engagement grooves 16d are provided at 90-degree intervals along the end.

The collar 28 is formed of a cylindrical body having the same diameter as that of the collar hole 22, and the cylindrical body is continuously provided with two female screw holes 28a and 28b in the radial direction and the axial direction. . The female screw hole 28a in the radial direction is formed so as to penetrate substantially the center of the cylindrical body, and the male screw 16c of the push rod 16 is screwed into the female screw hole 28a. Further, the female screw hole 28b in the axial direction is formed between the above-mentioned female screw hole 28a and the lower surface of the cylindrical body, and the set screw 30 of the rotation stopping means 29 is screwed into the female screw hole 28b.

The rotation stopping means 29 is composed of the above-mentioned set screw 30.
And a ball plunger 31 provided on the set screw 30.
And four engaging grooves 16d formed on the push rod 16. The set screw 30 is provided with a tool engaging hole 30a on the outer surface of the base end, and the mounting hole 30a is provided on the distal end side.
b is opened and provided. The mounting hole 30b accommodates the above-mentioned ball plunger 31 in which a spherical body 32 such as a steel ball and a coil spring 33 that elastically repels the spherical body 32 toward the opening of the mounting hole 30b are housed. When it is screwed into the female screw hole 28b in the axial direction of 28, the tip end portion of the sphere 32 which is elastically bulged by the coil spring 33 is arranged to project into the female screw hole 28a in the radial direction.

Collar 28 equipped with rotation stopping means 29
Is accommodated in the collar hole 22 while aligning the female screw hole 28a in the radial direction with the rod through hole 23 of the brake lever 8. The push rod 16 has a spherical head 16a.
Is locked in the locking hole 15a of the rod support member 15,
The male screw 16c before screwing the knob 16b to the other end is inserted into the rod through hole 23 of the brake lever 8 and screwed into the female screw hole 28a of the collar 28 to project to the outside of the rod through hole 23. The push rod 16 is swingably attached by screwing a knob 16b to the other end. Further, the spherical body 32 of the rotation stopping means 29 engages with any one of the engaging grooves 16d of the push rod 16 which is rotated downward to prevent the push rod 16 from rotating.

The retracted position of the brake lever 8 is the push rod 16 held by the rotation stopping means 29 and the collar 2.
8 and the grip portion 8b of the brake lever 8 and the accelerator grip 3 of the bar handle 2 are determined.
, And a predetermined interval which is a grip allowance is set. Further, when the knob 16b of the push rod 16 is forcibly rotated, the brake lever 8 is used to disengage the spherical body 32 of the rotation stopping means 29 and the engagement groove 16d of the push rod 16. , 7 are moved toward or away from the bar handle 2 with the fulcrum as the fulcrum, and the grip allowance is adjusted to be enlarged or reduced.

In this embodiment, the replacement of the lever pins 6 and 7 for changing the lever ratio is performed while the pin hole row 21 is aligned with the through holes 24a and 24b of the lever mounting arms 5b and 5c. Even if the ratio is changed, there is no problem that the set angle of the brake lever 8 with respect to the bar handle 2 is changed or the grip allowance between the accelerator grip 3 of the bar handle 2 and the grip portion 8b of the brake lever 8 is changed.

Even when the lever ratio of the brake lever 8 is changed as described above, the piston pressing point P of the brake lever 8 is held on the central axis of the piston 12, so that an unbalanced load is applied to the piston 12. As a result, wear is less likely to occur, and the piston pressing force set on the brake lever 8 can be sufficiently exerted. Further, the pin hole row 21 of the brake lever 8 is formed along the longitudinal direction of the attachment side base portion 8a of the conventional shape. With such a setting, the area of the attachment side base portion 8a is not particularly enlarged. In addition, while forming the pin hole row 21, it is possible to secure a required rigidity force on the attachment side base portion 8a.

FIG. 6 is a second embodiment of the present invention showing a modification of the first embodiment, in which the elliptical shaft portion 25a of the spacer 25 combined with the lever pin 6 is attached to the lower lever mounting arm 5c. The flange 2 is accommodated in the through hole 24b from above.
5b is brought into contact with the upper surface of the lever mounting arm 5c, the spacer 25 is used upside down from the first embodiment, and a washer 35 is interposed between the long diameter shaft portion 25a and the lock nut 27. .

The other spacer 26 (not shown) is also used upside down from that of the first embodiment, and in this embodiment having such a structure, the mounting side base portion 8a of the brake lever 8 is provided more than in the first embodiment. Since the flange 25b of the spacer 25 having a small contact area comes to be supported, the brake lever 8
The grip operation can be performed lightly and a good feeling can be obtained.

FIG. 7 shows a third embodiment of the present invention. A hydraulic master cylinder device 40 has a hydraulic master cylinder 41 for a front brake and a cylinder body 42 of the hydraulic master cylinder 41. The adjusting mechanism used in the first embodiment is omitted.

The hydraulic master cylinder 41 includes a cylinder body 42, an integral bracket portion 42a, and a holder 4 which is a separate body.
4 is a horizontal type that is fixed to the bar handle 2 and is arranged along the front part of the bar handle 2, and a reservoir 45 is integrally formed on the upper part of the cylinder body 42 and opens to the side of the vehicle body. A piston 47 is inserted into the hole 46 so as to be liquid-tight and movable, and a mounting side base portion 43a of the brake lever 43 is provided between a pair of upper and lower lever mounting arms 42b and 42c projecting to the front portion on the opening side of the cylinder hole 46. Are pivotally supported by a lever pin 48.

The brake lever 43 is mounted on the mounting side base portion 43.
The pin hole row 49 is provided in a, the grip portion 43b is continuously provided in the attachment side base 43a, and the attachment side base 4 is provided.
A piston pressing portion 43c is formed on one side of the 3a and a rotation restricting piece 43d is formed on the other side. The outer peripheral surface of the piston pressing portion 43c is formed in an arc shape, and the piston 4
The piston pressing point P is in contact with the center of the rear end surface of the piston 7.
Further, the rotation restricting piece 43d, when the brake lever 43 is urged in the non-operating direction (counterclockwise in FIG. 7) by the contact between the piston 47 and the piston pressing portion 43c,
The cylinder body 42 is brought into contact with the vehicle body front side surface 42d to regulate the backward movement limit, and the grip allowance of the brake lever 43 is set.

The pin hole array 49 includes two consecutive pin holes 4
9a and 49b are arranged substantially orthogonal to the longitudinal direction of the mounting side base portion 43a, and the lengths from the pin holes 49a and 49b to the piston pressing point P of the brake lever 43 are set to different lengths. Further, the lever pin 48 is provided with a guide shaft portion 48b eccentrically provided on one side portion of a flange 48a supported on the upper surface of the upper lever mounting arm 42b, and the lever pin 48 is reversed to guide the guide shaft portion 48.
By selectively inserting b into the pin holes 49a and 49b and screwing it, the lever ratio can be changed without changing the set angle of the brake lever 43 with respect to the bar handle 2 and the grip allowance, and the piston pressing point can be changed. P does not deviate from the central axis of the piston 47.

In each of the above-mentioned embodiments, the pin holes of the lever mounting arm are described as being continuous, but in the present invention, a plurality of pin holes may be provided independently, and the number of pin holes may be the same as the lever ratio. The number may be two or more depending on the required number of. Further, as the lever pin, it is also possible to use a commonly used general shape or a ready-made bolt. Further, the through hole of the lever mounting arm may be formed in the same shape as the pin hole other than the elongated hole having the size including all the pin holes integrally as in the first embodiment. In this case, The lever pin having a normal shape can be used. Furthermore, the pin hole array is
You may arrange | position on a curve other than a straight line. The present invention can also be used as a hydraulic master cylinder device for a clutch of a bar handle vehicle.

[0039]

According to the hydraulic master cylinder device for a bar handle vehicle of the present invention, the length of the hydraulic master cylinder on the mounting side base of the operating lever pivotally supported by the lever pin on the lever mounting arm of the hydraulic master cylinder and the piston pressing portion. Are arranged with different pin holes, and the lever mounting arm is provided with a through hole corresponding to the pin hole row of the operation lever, and the lever pin is attached to one of the pin hole rows. By selectively inserting the lever pin and inserting it through the through hole of the lever mounting arm and screwing it in, it is possible to change the lever ratio without changing the setting angle of the operating lever with respect to the bar handle or the grip allowance. , It will be comfortable and easy to use.

Even when the lever ratio of the operating lever is changed, the piston pressing point of the operating lever is held on the central axis of the piston, so that an unbalanced load is not applied to the piston and wear is less likely to occur. The piston pressing force set on the lever can be sufficiently exerted.

Further, by forming the pin hole row of the operating lever along the longitudinal direction of the mounting side base portion, the mounting side base portion can be formed without enlarging the area of the mounting side base portion for forming the pin hole row. It is possible to secure the required rigidity.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional plan view in which a hydraulic master cylinder device according to a first embodiment of the present invention is attached to a bar handle.

FIG. 2 is an exploded perspective view of essential parts of a hydraulic master cylinder device showing a first embodiment of the present invention.

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

FIG. 4 is an exploded perspective view of essential parts of a hydraulic master cylinder device showing a first embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of a main part of a hydraulic master cylinder device showing a first embodiment of the present invention.

FIG. 6 is a longitudinal sectional view of a main part of a hydraulic master cylinder device showing a second embodiment of the present invention.

FIG. 7 is a partial sectional plan view of a hydraulic master cylinder device showing a third embodiment of the present invention.

[Explanation of symbols]

1 ... Hydraulic master cylinder device 2 ... Steering bar handle 3 ... Accelerator grip 4 ... Hydraulic master cylinder 5 ... Cylinder body 5b ... Upper lever mounting arm 5c ... Lower lever mounting arm 6, 7 ... Lever pin 6a , 7a ... Oval shaft portions 6b, 7b of lever pins 6, 7 ... Flange 6c, 7c of lever pins 6, 7 ... Guide shaft portions of lever pins 6, 7 6d, 7d ... Screw portions of lever pins 6, 7 8 ... Brake lever 8a ... Mounting side base portion 8b ... Grip portion 9 ... Adjusting mechanism 11 ... Cylinder hole 12 ... Piston 15 ... Rod supporting member 16 ... Push rod 16a ... Push rod 16 spherical head 16b ... Rotating knob 16c ... Push rod 16 Screw 16d ... Engaging groove 21 ... Pin hole row 21a, 21b, 21c ... Pins consisting of pin holes 21a to 21c Hole 22 ... Collar hole 23 ... Rod through hole 24a, 24b ... Through hole formed in lever mounting arms 5b, 5c 25, 26 ... Spacers 25a, 26a ... Spacers 25, 26 oval shaft portions 25b, 26b ... Spacer 25 , 26 flanges 25c, 26c ... pin holes of spacers 25, 26 27 ... lock nut 28 ... collar 28a ... female screw hole in radial direction 28b ... female screw hole in axial direction 29 ... rotation stopping means 30 ... set screw 31 ... ball Plunger 32 ... Sphere such as steel ball 33 ... Coil spring 35 ... Washer 40 ... Hydraulic master cylinder device 41 ... Hydraulic master cylinder 42 ... Cylinder body 42b, 42c ... Lever mounting arm 43 ... Brake lever 43a ... Brake lever 43 mounting Side base portion 43b ... Grip portion of brake lever 43 43c ... Brake lever 4 Piston pressing part 43d of 3 ... Rotation restricting piece of brake lever 43 46 ... Cylinder hole 47 ... Piston 48 ... Lever pin 48a ... Flange of lever pin 48 48b ... Guide shaft part of lever pin 48 ... Pins consisting of pin holes 49a, 49b Row row 49a, 49b ... Pin hole P ... Piston pressing point of the spherical head portion 16a of the push rod 16 in the first embodiment and piston pressing point of the piston pressing portion 43c of the brake lever 43 in the third embodiment.

Claims (2)

[Claims] 1. A lever master arm fixed to a bar handle has a lever mounting arm pivotally supporting a mounting side base portion of an operating lever, and a piston pressing portion of the operating lever causes the hydraulic master cylinder to move. In the hydraulic master cylinder device for a bar handle vehicle that pushes the piston inserted in the cylinder hole, a plurality of pin holes having different lengths from the piston pressing portion are provided on the base portion on the mounting side of the operation lever. The lever mounting arms are arranged in an array, and through holes corresponding to the pin hole row of the operation lever are formed in the lever mounting arm so that the lever pin is selectively inserted into any one of the pin hole rows of the operation lever. At the same time, the lever pin is inserted into a through hole of the lever mounting arm and screwed, and a hydraulic master cylinder device for a bar handle vehicle is provided. 2. The hydraulic master cylinder device for a bar handle vehicle according to claim 1, wherein the pin hole row of the operation lever is formed along a longitudinal direction of a mounting side base portion.