JPH09263281A - Bar handle for vehicle operation lever - Google Patents

Abstract

(57) [Summary] (Correction) [Problem] To simplify the machining process of the grip allowance adjusting mechanism and improve the workability of assembling. As a grip allowance adjusting mechanism 13, a cam clutch portion 17b in which a plurality of cam surfaces 17e having different distances from a central axis are continuous in a circumferential direction in a lever main body 11.
The adjustment pin 17 having the
A cam contact portion 12f, a clutch housing portion 23 formed in the slit 18 of the upper arm 11d of the bifurcated arm, and a small diameter portion 17c inserted into the slit 18 in the adjustment pin 17.
Is formed between the large-diameter head portion 17a and the cam clutch portion 17b, the adjustment pin 17 is rotatably supported by the slit 18, and the slit 18 is provided with a stopper 19 for restricting the movement of the adjustment pin 17 in the opening direction. Set up.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses hydraulic pressure to brake and clutch a bar handle vehicle such as a motorcycle, a motorcycle having a steering handle bar at the front of the vehicle body, a three- or four-wheel buggy vehicle. The present invention relates to an operating lever of a hydraulic master cylinder that operates, and more particularly, to a bar handle vehicle operating lever capable of adjusting a grip margin between the operating lever and a handlebar clip.

[0002]

2. Description of the Related Art As an operation lever of this type, for example, there is an operation lever disclosed in Japanese Patent Publication No. 6-8115. This operation lever is a knocker arranged such that the lever body is arranged in front of the grip at the end of the handlebar and the working arm is faced to the rear end of the piston inserted in the cylinder hole of the hydraulic master cylinder. As a grip allowance adjusting mechanism, an adjusting pin having a cam clutch section in which a plurality of cam surfaces having different distances from the central axis are continuous in the circumferential direction is rotatably provided on the lever main body, and the adjusting pin is provided. By providing a cam abutting portion that abuts against any one cam surface of the cam clutch portion of the pin on the knocker, and rotating the adjusting pin to move the lever main body in a direction toward or away from the grip, The grip allowance with the grip can be adjusted according to the rider's physical constitution and taste.

[0003]

However, in the above-mentioned grip allowance adjusting mechanism, the adjusting pin mounting hole is vertically formed in the lever body, and the cam contact portion penetrates the side wall of the adjusting pin mounting hole. Since the holes are formed and the adjusting pin is inserted by inserting the adjusting pin from the upper part of the adjusting pin mounting hole at the time of assembling, there are many hole forming processes and the assembling workability is complicated.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a bar handle vehicle operation lever in which the process of the grip allowance adjusting mechanism is simplified and the assembling workability is improved.

[0005]

In order to achieve the above-mentioned object, according to the present invention, in the means of claim 1, an operating lever attached to a hydraulic master cylinder is arranged in front of a grip at an end of a handlebar. And a knocker arranged so that the working arm faces the rear end of the piston inserted in the cylinder hole of the hydraulic master cylinder, and the working arm of the knocker and the lever body are separated. As a grip allowance adjusting mechanism for adjusting the grip allowance between the lever main body and the grip by moving the lever main body in a direction approaching or separating from the grip between the working arm facing portion, the distance from the central axis is An adjusting pin having a cam clutch portion in which a plurality of different cam surfaces are continuous in the circumferential direction, and a cam abutting portion abutting on any one cam surface of the cam clutch portions of the adjusting pin are provided. In the bar handle vehicle operation lever, the cam abutment portion is formed in the knocker, to form a rotation base of the lever body up and down a pair of bifurcated arms,
The rotation base of the knocker is sandwiched between the bifurcated arms to be supported relatively rotatably, and a slit that opens in the cam contact portion direction is formed in the upper arm of the bifurcated arm, and the slit is formed below the slit. A clutch accommodating portion that is larger than the cam clutch portion of the adjust pin is formed, and a small diameter portion that is inserted into the slit is formed in the adjust pin between the large diameter head portion and the cam clutch portion. Is rotatably supported by the slit, and the slit is provided with a stopper for restricting movement of the adjust pin in the opening direction. In the means of claim 2, the stopper is formed of synthetic resin. It is characterized in that it is provided so as to be able to contact the rear surface of the large diameter head of the adjusting pin.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in more detail based on the embodiments shown in the drawings. A hydraulic pressure master cylinder device 3 for a front brake is attached to a handlebar 1 that steers the front wheels at the front part of the vehicle body of a bar-handle vehicle, at a position inside the vehicle body of an accelerator grip 2 at the right end. This hydraulic master cylinder device 3 is pivoted on a hydraulic master cylinder 4 attached to the front side of the vehicle body of the handlebar 1 and lever holders 5a and 5b protruding vertically in a pair from a cylinder body 5 of the hydraulic master cylinder 4. 6 and a brake lever 7 rotatably provided.

A bottomed cylinder hole 8 is formed in the cylinder body 5 along the handlebar 1.
The piston 9 is inserted in the piston 9, and the piston 9 is constantly urged toward the opening by a return spring (not shown) that is compressed at the bottom of the cylinder hole 8. It is regulated by a circlip 10 attached to the end.

The brake lever 7 is an accelerator grip 2
Is a two-piece type composed of a lever body 11 arranged in front of the cylinder body and a knocker 12 arranged on the cylinder body 5 side. The knocker 12 contacts the rear end of the piston 9 of the cylinder hole 8. The working arm 12a is formed, and the grip allowance adjusting mechanism 1 is provided between the lever body 11 and the knocker 12.
3 are provided.

The lever body 11 is formed into a rod-like body that is gently curved substantially in front of the accelerator grip 2 and is operated by a rider to operate the lever portion 11a, and a knocker is continuously provided on the base side of the lever portion 11a. 12 working arms 12a
Working arm facing portion 11b facing the
The rotation base 11c that is continuously supported on the lever holders 5a and 5b of the cylinder body 5 is integrally formed on the base side of b, and the working arm facing portion 11b is thicker than the lever portion 11a and the knocker 12. The rotation base 11c is formed in a plate-like body.
Is formed in a bifurcated shape including an upper arm 11d and a lower arm 11e, and the pivot insertion hole 11 is formed in both arms 11d and 11e.
f and 11f are drilled.

The knocker 12 includes the working arm 12a, a rotating base 12b sandwiched between the upper arm 11d and the lower arm 11e of the lever body 11, and a stopper extending from the rotating base 12b to the front side of the cylinder body 5 in the vehicle body. It has a piece 12c and a cam arm 12d extending toward the working arm facing portion 11b side of the lever body 11 of the working arm 12a, and a pivot insertion hole 12e is formed in the rotation base portion 12b, and a tip of the cam arm 12d. A flat cam contact portion 12f is formed on the.

The lever body 11 and the knocker 12 are the upper arm 1
The rotation base 12b of the knocker 12 between 1d and the lower arm 11e.
Is rotatably sandwiched between the pivot insertion holes 11f,
It is temporarily assembled by inserting the collar 14 into 12e and 11f. Temporarily assembled lever body 11 and knocker 1
2 is mounted between the lever holders 5a and 5b of the cylinder body 5, the pivot 6 is inserted into the pivot insertion hole 5c of the lever holder 5a and the collar 14, and the male screw 6a of the pivot 6 is attached to the lever holder 5b. The nut 15 is screwed into the female screw hole 5d, and the male screw 6a protruding from the lower surface of the lever holder 5b is screwed with the nut 15 so as to be pivotally supported around the pivot 6.

A coil spring 16 for urging the lever body 11 toward the accelerator grip 2 is contracted on the front side of the body of the lever body 11 and the knocker 12, and the action arm facing portion 11b of the lever body 11 and the knocker 12 are arranged. The cam arm 1
The grip allowance adjusting mechanism 13 is disposed between 2d.

The grip allowance adjusting mechanism 13 includes a cam contact portion 12f at the tip of the cam arm 12d of the knocker 12, and the lever body 11.
Adjusting pin 17 provided on the arm facing portion 11b of the
It is composed of

The adjusting pin 17 has a large-diameter head 17a.
And the hexagonal columnar cam clutch portion 17b formed on the shaft portion
And a cylindrical small-diameter portion 17c formed between the large-diameter head portion 17a and the cam clutch portion 17b to have a smaller diameter than the cam clutch portion 17b, and a larger diameter than the cam clutch portion 17b at a lower portion of the cam clutch portion 17b. Disc-shaped medium diameter part 17 formed
The cam clutch portion 17b is formed in a deformed hexagonal cross section in which six cam surfaces 17e having different distances from the central axis are continuous in the circumferential direction.
On the upper surface of a, the rotation position of the adjustment pin 17 is shown 1
Numbers up to 6 are provided corresponding to the cam surface 17e.

The adjusting pin 17 is provided on the lever body 1.
It is rotatably supported by the slit 18 formed in the upper arm 11d of the first unit. The slit 18 is opened in the direction of the cam contact portion 12f of the knocker 12, has a width substantially the same as the diameter of the small diameter portion 17c of the adjusting pin 17, and has a semi-arcuate shape having a substantially the same diameter as the diameter of the small diameter portion 17c at the back. Is formed in.

The slit 1 is formed on the upper surface of the upper arm 11d.
The engaging groove 20 of the stopper 19 is formed adjacent to the position 8. The engaging groove 20 is wider than the slit 18 and becomes wider toward the inner part. Furthermore, the upper arm 11
d and the upper surface of the working arm facing portion 11b, the storage recess 2 of the large diameter head portion 17a of the adjusting pin 17 is adjacent to the engaging groove 20.
1 is formed, and the large diameter head 17a of the adjusting pin 17 is adjacent to the storage recess 21 on the upper surface of the working arm facing portion 11b.
A triangular index 22 that points to the number on the upper surface is formed.

Upper arm 11d and lower arm 11e of the lever body 11
The lower portion of the slit 18 between the two is formed in a clutch housing portion 23 that is larger than the cam clutch portion 17b of the adjustment pin 17, and the inner portion of the clutch housing portion 23 has a diameter substantially the same as the diameter of the middle diameter portion 17d of the adjustment pin 17. Is formed in an arc shape.

The stopper 19 is made of synthetic resin and formed in a U shape. The bent portion has a semi-arcuate shape having an inner diameter substantially equal to the diameter of the small diameter portion 17c, and the distance between both arms is the width of the engaging groove 20. It is made slightly wider than the engaging groove 20 and is thicker than the depth of the engaging groove 20. The arms 19b and 19b are fitted in the engaging groove 20 with a narrow interval, and the arms 19b and 19b are repulsed. The force restricts the movement of the adjust pin 17 rotatably supported by inserting the small diameter portion 17c into the slit 18 in the opening direction of the slit 18. Further, the stopper 19 keeps its upper surface in contact with the rear surface of the large-diameter head portion 17a of the adjusting pin 17 to keep the adjusting pin 17 rotating smoothly.

To assemble the brake lever 7 having the above-mentioned structure, the small diameter portion 17c of the adjusting pin 17 is inserted into the slit 18 of the lever body 11 and the stopper 19 is fitted into the engaging groove 20 to adjust the adjusting pin. 17 lever body 1
After mounting on 1, the upper arm 11d and the lower arm 1 of the lever body 11
The rotation base 12b of the knocker 12 is relatively rotatably sandwiched between 1e, and the coil spring 16 is contracted between the lever body 11 and the knocker 12, and as described above, the pivot insertion holes 11f, 12e, 11f are formed. The collar 6 is temporarily assembled by inserting the collar 14 into the lever holder 5a, 5b of the cylinder body 5, and the pivot 6 is inserted into the pivot insertion hole 5c of the lever holder 5a and the collar 14 to rotate the pivot 6 around. Is rotatably supported by.

In the brake lever 7 in which the lever body 11 and the knocker 12 are integrated and mounted on the lever holders 5a and 5b, the working arm 12a of the knocker 12 contacts the rear end of the piston 9 and the bottom of the cylinder hole 8 is contacted. The stopper piece 12 is biased by a return spring (not shown) that is compressed.
c contacts the front wall of the cylinder body 5.

Further, in the lever body 11, one of the cam surfaces 17e of the cam clutch portion 17b of the adjusting pin 17 is always brought into contact with the cam contact portion 12f of the knocker 12 by the urging force of the coil spring 16, and the lever body 11 and When the rider grips and operates the lever main body 11 during braking when the grip allowance is set between the accelerator grip 2 and the accelerator grip 2, the lever main body 11 and the knocker 12 are integrated with each other to rotate about the pivot 6 as a fulcrum, and the knocker 12 moves. The working arm 12a pushes the piston 9 toward the bottom of the cylinder hole 8 to pressurize the hydraulic fluid in the hydraulic chamber and supply the hydraulic fluid to the front brake to brake the front wheels.

When adjusting the distance between the lever body 11 and the accelerator grip 2, that is, the grip allowance, the lever body 11 is
The coil spring 16 is rotated to the front side of the vehicle body in the anti-grip direction against the biasing force of the coil spring 16 to release the contact between the cam clutch portion 17b of the adjust pin 17 and the cam contact portion 12f of the knocker 12. Next, while maintaining this state, the large-diameter head 17a of the adjusting pin 17 is operated to rotate the adjusting pin 17, and the desired number on the upper surface of the large-diameter head 17a is aligned with the index 22 to knock the knocker 12 The cam surface 17e that contacts the cam contact portion 12f is changed. Then, when the rotation of the lever body 11 in the anti-grip direction is released, the lever body 11 is rotated in the grip direction by the urging force of the coil spring 16, and the new cam surface 17 of the adjust pin 17 is released.
Since e is brought into contact with the cam contact portion 12f of the knocker 12, different grip allowances are set between the lever body 11 and the accelerator grip 2.

As described above, the lever body 11 is formed with the slit 18 that opens in the direction of the cam contact portion 12f of the knocker 12, the small diameter portion 17c of the adjust pin 17 is inserted into this slit 18, and the stopper 19 is engaged. Since the adjusting pin 17 is fitted into the groove 20 and the adjusting pin 17 is attached to the lever main body 11, it is possible to simplify the machining process of the grip allowance adjusting mechanism 13 and improve the assembling workability.

Further, the back of the slit 18 and the stopper 19
And the inner diameter of the bent portion of the adjust pin 17 are formed in a semi-circular shape having substantially the same diameter as the diameter of the small diameter portion 17c of the adjust pin 17, and the inner portion of the clutch accommodating portion 23 corresponds to the diameter of the middle diameter portion 17d of the adjust pin 17. Since it is formed in an arc shape having substantially the same diameter, the adjusting pin 17 can be rotated smoothly when adjusting the grip allowance, and the upper surface of the stopper 19 made of synthetic resin has a large diameter. Since it is in contact with the back surface of the head portion 17a, the smooth rotation of the adjustment pin 17 is maintained.

[0025]

As described above, in the bar-handle vehicle operation lever of the present invention, the operation lever is divided into the lever body and the knocker, and the grip allowance adjusting mechanism for adjusting the grip allowance between the lever body and the grip. As such, the lever body is provided with an adjust pin having a cam clutch portion in which a plurality of cam surfaces having different distances from the central axis are continuous in the circumferential direction, and one of the cam clutch portions of the adjust pin is provided on the knocker. A cam contact portion that contacts one cam surface is formed, the rotation base of the lever body is formed into a pair of upper and lower bifurcated arms, and the pivot base of the knocker is sandwiched between the bifurcated arms to enable relative rotation. A slit is formed on the upper arm of the bifurcated arm that opens toward the cam abutment part, and a clutch accommodating part that is larger than the cam clutch part of the adjust pin is formed under the slit. A small diameter part to be inserted into the slit is formed between the large diameter head and the cam clutch part on the pin, the adjustment pin is rotatably supported in the slit, and the movement of the adjustment pin in the opening direction is restricted by the slit. Since the stopper is provided, it is possible to simplify the processing process for attaching the adjust pin to the lever body and improve the workability of assembling. Also, since the adjusting pin attached to the lever body does not fall out, workability when assembling the knocker is also good.

Further, since the stopper is made of synthetic resin and provided so as to be capable of contacting the rear surface of the large diameter head of the adjusting pin, the smooth rotation of the adjusting pin when adjusting the grip allowance can be maintained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an operation lever

FIG. 2 is a plan view of the operation lever attached to the handlebar.

FIG. 3 is an enlarged plan view of an essential part of FIG.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

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

FIG. 6 is an enlarged plan view of an essential part showing an operation lever when adjusting a grip allowance.

[Explanation of symbols]

1 ... Bar handle Vehicle handle bar, 2 ... Accelerator grip, 3 ... Hydraulic master cylinder device for front brake, 4 ... Hydraulic master cylinder, 5 ... Cylinder body,
5a, 5b ... Lever holder, 6 ... Pivot, 7 ... Brake lever composed of lever body 11 and knocker 12, 8
... Cylinder hole, 9 ... Piston, 11 ... Lever body, 11
a ... main body part, 11b ... rotation base part, 11c ... working arm facing part, 11d ... upper arm of rotation base part 11b, 11e ... lower arm of rotation base part 11b, 12 ... knocker, 12a ... working arm, 1
Reference numeral 2b ... Rotating base portion, 12c ... Stopper piece, 12d ... Cam arm, 12f ... Cam contact portion, 13 ... Gripping allowance adjusting mechanism, 17
... adjust pin, 17a ... large diameter head, 17b ... cam clutch part, 17c ... small diameter part, 17d ... medium diameter part, 18 ... slit, 19 ... stopper, 20 ... engagement groove, 23 ... clutch accommodating part

Claims (2)

[Claims] 1. An operating lever attached to a hydraulic master cylinder, a lever main body arranged in front of a grip at an end portion of a handlebar, and a piston having a working arm inserted in a cylinder hole of the hydraulic master cylinder. And a knocker disposed so as to face the rear end of the lever body, and the lever body is moved between the working arm of the knocker and the working arm facing portion of the lever body in a direction toward or away from the grip. As a grip allowance adjusting mechanism for adjusting the grip allowance between the lever body and the grip, an adjust pin having a cam clutch portion in which a plurality of cam surfaces having different distances from the central axis are continuous in the circumferential direction, In a bar handle vehicle operating lever provided with a cam abutting portion that abuts on any one cam surface of a cam clutch portion of an adjust pin, the cam abutting portion is formed on the knocker. The pivot base of the lever body is formed into a pair of upper and lower bifurcated arms, and the pivot base of the knocker is sandwiched between the bifurcated arms to rotatably support the bifurcated arms. A slit that opens in the direction of the cam contact portion is formed, a clutch accommodating portion that is larger than the cam clutch portion of the adjust pin is formed in the lower portion of the slit, and a small diameter portion that is inserted into the slit is formed in the adjust pin. A stopper formed to be formed between the large-diameter head portion and the cam clutch portion so as to rotatably support the adjustment pin in the slit and to restrict movement of the adjustment pin in the opening direction in the slit. Bar handle vehicle operation lever characterized by. 2. The stopper is made of synthetic resin,
The bar handle vehicle operation lever according to claim 1, wherein the adjustment pin is provided so as to be capable of abutting on a rear surface of a large-diameter head portion of the adjustment pin.