JP2001260972A - Grip margin adjusting mechanism for operation lever - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grip margin adjusting mechanism integrally summarizing and simplifying a shaft connecting a second lever and a first lever and connecting the second lever to a master cylinder side and a lever grip margin adjusting shaft. SOLUTION: This grip margin adjusting mechanism for an operation lever is provided with the rockably supported first lever 6 and the second lever 7. A spring 12 exciting the second lever to a handle bar side is arranged between the first lever and the second lever, and a piece 10 stored in a piece storage part is nonrotatably fitted to an adjusting pin 8. The piece is rotated in the piece storage part by rotating the adjusting pin to change the distance between the side of the piece and the rotation center, and the grip margin between the second lever and a handle grip is changed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a motorcycle,
For the operation lever of the hydraulic master cylinder, which operates the brakes and clutches of bar trike vehicles such as tricycles and three- and four-wheel buggy vehicles with steering handlebars at the front of the vehicle, the operation lever grip The present invention relates to a mechanism for adjusting an operating lever grip allowance, which is capable of adjusting the distance.

[0002]

2. Description of the Related Art Conventionally, a mechanism described in Japanese Patent Application Laid-Open No. 9-263281 has been known as an operating lever grip margin adjusting mechanism. The adjustment mechanism described in this publication,
The operation lever is divided into a first lever (knocker) and a second lever, and as a grip margin adjustment mechanism for adjusting a grip margin between the second lever and the grip, the distance from the central axis to each of the second lever is adjusted. An adjust pin having a cam clutch in which a plurality of different cam surfaces are continuous in the circumferential direction is provided, a cam contact portion is formed on the knocker, and a rotation base portion of the second lever is formed on a pair of upper and lower forked arms. , A rotatable base of the knocker is sandwiched between the forked arms so as to be rotatably supported, and a slit is formed in the upper arm of the forked arm in the cam contacting direction, and a cam clutch portion of an adjust pin is provided below the slit. Form a larger clutch receiving part, a small diameter part to be inserted into the slit is formed between the large diameter head and the cam clutch part on the adjust pin, and the adjust pin is rotatably supported on the slit. The slit is provided with a stopper for restricting the movement of the adjustment pin in the opening direction, thereby simplifying a processing step for mounting the adjustment pin on the second lever and improving the assembling workability. Can be. Further, since the adjust pin attached to the second lever does not come off, workability when assembling the knocker is also good.

[0003]

However, the grip margin adjusting mechanism includes a shaft connecting the knocker (first lever) and the second lever and connecting the second lever to the master cylinder, a knocker and a second lever. Since the adjusting pin for position adjustment for adjusting the distance between the lever and the lever is separately provided, there is a problem that the structure of the position adjusting mechanism is complicated and the number of parts is increased. Therefore, the present invention consolidates a shaft for connecting the second lever to the first lever and connecting the second lever to the master cylinder side and a shaft for adjusting the lever grip, thereby simplifying the grip margin. An object of the present invention is to solve the above problems by providing a mechanism.

[0004]

For this reason, the technical solution adopted by the present invention comprises a support arm formed on the handlebar side, a first lever which is swingably supported on the support arm by an adjusting pin, and A second lever, wherein the first lever includes a through hole through which the adjustment pin penetrates, and a pressing member that presses a piston of the master cylinder; and the second lever includes a long hole through which the adjustment pin penetrates. A frame accommodating portion formed continuously with the elongated hole, and a contact portion abutting against a pressing member of the first lever, wherein a second lever is provided between the first lever and the second lever by a handle. A spring biasing to the bar side is arranged, and a frame stored in the frame storage portion is non-rotatably attached to the adjustment pin, and by rotating the adjustment pin, the frame is rotated in the frame storage portion. , This top A handle between the second lever and the handle grip, thereby changing the grip between the second lever and the handle grip, wherein the top has a different distance from the center of rotation to each side. An operating lever grip allowance adjusting mechanism, which is configured as a polygon, wherein the spring is arranged to be inclined with respect to a contact surface between the pressing member and a contact portion 7a of the second lever. This is an operation lever grip margin adjustment mechanism characterized by the following.

[0005]

FIG. 1 is a plan view of the entire configuration of an operation lever having a lever grip margin adjusting mechanism according to a first embodiment of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. B- in 2
B sectional view, FIG. 4 is a perspective view showing the entire shape of the first lever,
5 is a plan view of the base of the second lever, and is a cross-sectional view taken along line DD and EE in FIG. 5, and FIG.
It is sectional drawing.

In FIGS. 1, 2 and 3, reference numeral 1 denotes a handlebar, and a handlebar 2 and a master cylinder 3 for generating hydraulic pressure are attached to the handlebar 1 by appropriate fixing means. Support arms 4 and 5 (see FIG. 2) which are vertically divided are formed on the 3 side. A first lever 6 and a second lever 7 constituting an operation lever are fitted between the support arms 4 and 5, and are pivotally supported by an adjustment pin 8 constituting a grip margin adjustment mechanism described later.

An adjustment dial 9 is provided at the upper end of the adjustment pin 8 as shown in FIGS.
Is rotated to rotate the adjustment pin 8, rotate the top 10 which is non-rotatably attached to the adjustment pin 8, and change the distance between the side of the top and the center of rotation (in this example, four steps can be used). It is possible, but the details will be described later).
The distance L between the handle and the handle grip 2 can be adjusted. When the second lever 7 is operated, the second lever 7 rotates around the adjustment pin 8, and the contact portion 7 a provided on the second lever presses the pressing member 6 a of the first lever 6, and further the pressing member 6 a The hydraulic pressure can be generated by pressing the piston 11 of the master cylinder 3.

Next, the details of the grip allowance adjusting mechanism will be described. The adjusting mechanism includes a frame accommodating portion 7c formed in the second lever 7 and an adjusting pin 8 accommodated in the accommodating portion 7c, which is not rotatable by a spline mechanism. Top 1 attached
0, and a spring 12 and the like disposed between the first lever 6 and the second lever 7. The configuration of each member will be described below.

The first lever 6 has an overall shape as shown in FIG. 4. The first lever 6 has a contact surface 6b which comes into contact with the stop lamp switch 13 as shown in FIG. A pressing member 6a for pressing the piston 11 is integrally formed, and the lever 6 is further provided with a spring holding portion 6c for holding a spring 12 disposed between the lever 6 and the second lever 7, and an adjustment pin through hole 6d. I have. On the back surface of the pressing member 6a, a second contact surface 6e that contacts a contact portion 7a formed on a second lever 7 described later.
Are formed.

At the base of the second lever 7, as shown in FIG.
A long hole 7b having an axis substantially parallel to the end face of the second lever 3 is formed, and the long hole 7b has a depth substantially half the thickness of the second lever continuously to the long hole 7b. A frame storage section 7c as shown in FIG. 5 is formed. The frame accommodating portion has a size that allows the frame to rotate in the accommodating portion, and further has a first contact surface 7d that contacts the side of the coma. The second lever 7 is provided with a contact portion 7a that contacts the second contact surface 6e described above.

As shown in FIG. 2, a top 10 is non-rotatably attached to the adjustment pin 8 by a spline. The top 10 is formed in a rectangular shape as shown in FIG. Distances a, b,
The configuration is such that c and d are different (a <b <c <d), and the frame 10 is also rotated in the frame storage section 7c by rotating the adjustment pin 8.

Referring to FIG. 3, a cylinder hole 3a is formed in the master cylinder 3 along the handlebar, and a piston 11 is inserted into the cylinder hole 3a. It is in contact with the member 6a. Note that the configuration of the master cylinder 3 is conventionally known and is not a feature of the present invention, and thus detailed description is omitted.

As shown in FIGS. 2 and 3, the first lever 6 and the second lever 7 are supported by support arms 4, 5 by adjusting pins 8.
A spring 12 held by a spring holding portion 6c of a first lever is disposed between the two, and a spring 12 held by the spring holding portion 6c of the first lever is provided between the two. The second lever 7 is disposed between the first lever 6 and the second lever 7 so as to be inclined at a predetermined angle with respect to the second contact surface 6e.

The biasing force F by the spring 12 in the assembled state generates component forces F1 and F2 as shown in FIG. 7, and the contact portion 7a of the second lever 7 is moved by the component force F1.
The back surface of the pressing member 6a of the first lever 6 is pressed on the second contact surface, and the pressing protrusion 6a abuts on the piston 11 of the master cylinder 3 so as to prevent play. Also, the component 10 causes the top 10 to abut on the contact surface 7d of the second lever 7 to prevent rattling. In this way, generation of play on both contact surfaces can be effectively prevented by one spring 12.

Next, the operation of the grip margin adjusting mechanism having the above-described structure will be described. FIGS. 8A and 8B are explanatory diagrams for adjusting the grip allowance by the top. FIG. 8A shows a state in which the distance between the second lever 7 and the handle grip 2 is minimum, and FIG. The distance is maximum, (b),
(C) shows the state during that time.

(A) State The adjustment pin 8 is rotated by operating the adjustment dial, and the frame 10
Is a state where the distance between the axis of the adjustment pin 8 and the side of the top 10 is a minimum. As a result, the distance between the top 10 and the first contact surface 7d of the top housing 7c of the second lever 7 is in the minimum state a. In this state, the second lever 7 is moved to the right in the drawing with respect to the first lever in relation to the biasing force of the top 10 and the spring 12, so that
The distance between the lever 7 and the handle grip 2 is in the minimum state. When the second lever 7 is gripped (operated), the second lever 7 moves downward in the figure around the adjustment pin 8. This movement causes the contact portion 7a of the second lever 7 to move to the first lever 6
Of the pressing member 6a, and this force pushes the piston of the master cylinder to generate hydraulic pressure.

(B), (c), and (d) States in which the distance between the axis of the adjustment pin 8 and the side of the top 10 is changed by rotating the adjustment dial is shown. In (b), (c), and (d), the distance between the two levers 7 and the contact surface 7d of the frame storage portion 7c is gradually larger than in the state (a). As a result, the top 10 and the second lever 7
Between the contact surface 7d and the spring 1
2 and the handle grip 2
Is changed, and adjustment of the grip allowance is performed.

As described above, in the operating lever grip allowance adjusting mechanism according to the present invention, the top of the top provided on the adjustment pin is rotated by the action of the spring 12 when the adjustment pin is rotated by the adjustment dial. Since the distance between the frame storing portion and the wall surface changes without play, the distance between the second lever and the handle grip can be easily adjusted.

Next, a second embodiment of the present invention will be described. FIG. 9 is a diagram corresponding to FIG. 7 of the first embodiment. In the second embodiment, the top 10 and the first contact surface 7d of the second lever 7 contact each other in the direction in which the second lever 7 intersects. It is arranged at an angle to the one of the embodiment.

The above embodiments are merely examples of the embodiments of the present invention, and it is obvious that other embodiments can be used. For example, it is possible to make the shape of the frame a finer polygon or a cam shape in which the distance changes continuously, and the position where the spring is disposed is also the same as that of the first lever and the second lever. Can be changed at the time of design, and furthermore, the shape of the pressing projections formed on the first lever and the second lever, the shape of the contact portion, and the like can be changed. Also, the present invention may be embodied in various other forms without departing from the spirit or main characteristics of the present invention. Therefore, the above-described embodiment is merely an example in every aspect, and should not be construed as limiting.

[0021]

As described in detail above, according to the present invention,
With the action of the springs located between the polygon and the first and second levers, which have different polygonal distances from the center of rotation to the sides, simply operate the adjustment dial and rotate the top to easily grip. You can adjust your bill. Further, since the shaft for supporting the first lever and the second lever and the adjustment pin can be integrated, the structure is simplified, and excellent effects such as reduction in cost can be achieved. .

[Brief description of the drawings]

FIG. 1 is a plan view of an entire operation lever according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG. 2;

FIG. 4 is a perspective view showing the overall shape of a first lever.

FIGS. 5A and 5B are a plan view of a base of the second lever, a sectional view taken along line DD in FIG. 5, and a sectional view taken along line EE in FIG.

FIG. 6 is a plan view of the top and a sectional view taken along line FF in FIG.

FIG. 7 is a cross-sectional view taken along a line BB in FIG. 2, showing a first lever and a second lever;
FIG. 8 is an explanatory view of a spring force action in an assembled state of a lever.

8 is a cross-sectional view taken along the line CC in FIG. 2, and is an explanatory diagram of grip margin adjustment.

FIG. 9 is a cross-sectional view of the second embodiment.

[Explanation of symbols]

 Reference Signs List 1 handlebar 2 handle grip 3 master cylinder 4, 5 support arm 6 first lever 6a pressing member 6b abutment surface (second abutment surface) 6c spring holding portion 6d through hole 6e abutment surface 7 second lever 7a abutment Part 7b Slot 7c Frame storage part 7d Contact surface (first contact surface) 8 Adjustment pin 9 Adjustment dial 10 Frame 11 Piston 12 Spring

Claims (3)

[Claims] 1. Support arms 4, 5 formed on the handlebar 1 side.
A first lever 6 and a second lever 7 that are swingably supported on the support arm by an adjustment pin 8. The first lever 6 includes a through hole 6 d through which the adjustment pin 8 passes, and a master. A pressing member 6a for pressing a piston of the cylinder; a second hole 7 through which the adjusting pin 8 penetrates;
b, and a frame storage portion 7c formed continuously with the long hole 7b.
And a contact portion 7a for contacting the pressing member of the first lever 6
A spring for urging the second lever 7 toward the handlebar 1 is disposed between the first lever 6 and the second lever 7, and the adjustment pin 8 is stored in the frame storage portion 7 c The top 10 is mounted so as to be unrotatable. By rotating the adjustment pin 8, the top 10 is rotated in the top housing and the distance between the side of the top and the center of rotation is changed. An operation lever grip margin adjustment mechanism characterized by changing a grip margin between the grip and the grip. 2. The mechanism according to claim 1, wherein the top is formed as a polygon having different distances from the center of rotation to each side. 3. The spring 12 is provided with the pressing member 6a.
The operating lever grip allowance adjusting mechanism according to claim 1 or 2, wherein the operating lever is arranged so as to be inclined with respect to a contact surface of the second lever with a contact portion (7a).