JP3446963B2 - Motorcycle lever position adjustment device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for adjusting the position of a lever such as a brake lever provided on a motorcycle. 2. Description of the Related Art For example, as a lever position adjusting device for a brake lever, a hydraulic cylinder mounted on a handlebar of a motorcycle, a brake lever rotatably mounted on the hydraulic cylinder, A push rod for pressing the piston of the hydraulic cylinder with the rotation of the brake lever is provided, and the push rod is rotatably supported by the brake lever, and when the brake lever is released, the push rod is rotated via a remote wire. It is known that the position of the brake lever changes. [0003] In the case of a vertical installation in which a remote wire is long in the axial direction of a push rod, that is, a hydraulic cylinder is longitudinally arranged in the front-rear direction of a vehicle body, the remote wire extends forward and is provided at an extension end of the remote wire. In order to support the manual operation unit on the side opposite to the position where the brake lever of the handlebar is supported, that is, the position near the clutch lever, it is necessary to change the direction of rotation transmission. It is bent about 90 ° or more. [0004] However, if the middle portion of the remote wire is greatly curved as in the above-mentioned conventional example, friction loss increases, and it is difficult to perform accurate and quick adjustment. Even if the adjustment is given a moderation in advance, the moderation feeling felt when operating the manual operation unit may be poor. In addition, since a relatively large space is required to wire the remote wire so as to be largely bent, it may be difficult to arrange the remote wire depending on the model. Then, this application aims at solving such problems. In order to solve the above-mentioned problem, a motorcycle lever position adjusting device according to the present invention is arranged such that one end of a push rod is coaxially rotated with respect to the conventional device. A first gear operatively connected thereto, and a second gear meshing with the first gear at right angles. The second gear is connected to an end of the remote wire opposite to the manual operation portion, and is connected to the remote gear. The wire was extended from the second gear in the radial direction of the push rod. When the second gear is rotated by operating the manual operation portion of the remote wire, the second gear meshes with the first gear at right angles.
Is rotated on a rotation axis perpendicular to the rotation axis of the second gear. Therefore, the push rod coaxial with the first gear rotates together to adjust the position of the lever. At this time, since the first gear and the second gear mesh at right angles, the direction of rotation transmission changes here to substantially right. For this reason, the remote wire can be extended from the second gear in the radial direction of the push rod, so that it is not necessary to bend so much in the middle, and the remote wire can be disposed relatively straight. An embodiment of a brake adjusting device in which a hydraulic cylinder is disposed vertically will be described with reference to FIGS. 1 is a diagram schematically showing the entire brake adjusting device of the embodiment, FIG. 2 is an exploded view of main components, FIG. 3 is an enlarged cross-sectional view of a main part thereof, and FIG. 4 is a main part of FIG. FIG. In FIG. 1, a hydraulic cylinder 2 for a hydraulic brake is attached to one end of a handlebar 1 extending long to the left and right in the vehicle width direction. The hydraulic cylinder 2 is disposed in a vertical position extending in the front-rear direction of the vehicle body, and a piston (not visible in this drawing) is slidable in the length direction inside the hydraulic cylinder 2. In a protruding portion 3 provided at a front end portion of the hydraulic cylinder 2, a base end side of a brake lever 5 is rotatably mounted via a shaft 4. A slide nut 6 having a circular shape in plan view is provided at a position near the shaft 4 of the brake lever 5. Here, as a value for indicating the position of the brake lever 5, a line B connecting the shaft 4 and the center of the slide nut 6 when the hand is released from the brake lever 5 is used.
And an angle θ formed by some convenient reference line, for example, a line C passing through the shaft 4 and substantially parallel to the handlebar 1, is defined and used as a lever opening angle. A rotatable push rod 7 passes through the slide nut 6. The push rod 7 is disposed long along the axial direction of the hydraulic cylinder 2, and one end presses the piston of the hydraulic cylinder 2 with the rotation of the brake lever 5 during braking. Is connected to the bevel-shaped first gear 8. The first gear 8 is coaxial with the push rod 7, and is also formed in a bevel shape, and meshes at right angles with a second gear 9 whose rotation axis is orthogonal to the first gear 8. . The remote wire 10 having one end connected to the second gear 9 is connected to the push rod 7 from the second gear 9.
And is disposed relatively straight along the handlebar 1 and has a push rod 7 as in the prior art.
Is extended in the axial direction and is not greatly curved in the middle. A dial-shaped manual operation portion 11 provided at the other end of the remote wire 10 is supported at a hand position on the opposite side (clutch lever side) away from the brake lever 5, and in the present embodiment, the left hand is used. Remote operation is possible. The first gear 8 and the second gear 9 are connected to the adjuster bracket 1 attached to the brake lever 5.
2, a stopper bolt 13 that regulates the opening direction position of the brake lever 5 is provided on the side of the adjuster bracket 12 in an adjustable manner. Note that the adjuster bracket 12 in FIG. 1 shows a schematic contour line superimposed on another portion. As is apparent from FIG. 2, the adjuster bracket 12 is divided into upper and lower halves 12a and 12b, and the mounting portions 14a and 15a of the adjuster bracket 12 sandwich the brake lever 5 from above and below, and a hole is formed at each end. 14 and 15 are formed. A connection shaft 16 projecting upward from the shaft center of the slide nut 6 is fitted into the hole 14. Although not visible in this figure, a connection shaft 17 (see FIG. 4) projecting downward from the shaft center of the slide nut 6 is fitted into the hole 15. A through hole 18 is opened in the front surface of the base end portion of the brake lever 5, from which a distal end portion 1 of the push rod 7 is formed.
9 are protruding. The tip portion 19 is formed in a notched circular shape, and is fitted to a joint pipe 20 attached to the first gear 8 so as to be integrally rotatable. As is apparent from FIGS. 3 and 4, the push rod 7 penetrates the slide nut 6 in the diameter direction, and a male screw portion 21 is formed in this penetrating portion, and the through hole 22 ( (See FIG. 4). The length of the male screw portion 21 is the same as that of the push rod 7.
When the slide nut 6 moves on the push rod 7 with the rotation of, the slide nut 6 is long enough to secure a sufficient amount of movement. At the solid line position where the slide nut 6 moves forward (FIG. 3), The lever opening angle θ ₁ becomes the maximum, and conversely, the lever opening angle θ ₂ at the most retracted imaginary line position (FIG. 3) becomes the minimum. As shown in FIG. 3, the tip of the push rod 7 is in contact with the piston rod 24 in a spherical portion 23, and the inclination of the push rod 7 changes with the change of the lever opening angle. The center O of the spherical portion 23 is constant. When the inclination of the push rod 7 changes, the slide nut 6 rotates in the through hole 18 to respond. In this case, as is apparent from FIG. 4, engagement recesses 21a are formed at equal intervals on the outer periphery of the male screw portion 21 in the length direction,
The ball 25 is urged by and engaged with the spring 26 accommodated in the connection shaft 17, and the rotation of the male screw portion 21 is moderated by this click mechanism. Next, the operation of this embodiment will be described. In FIG. 1, when the second gear 9 is rotated by turning the manual operation unit 11 of the remote wire 10, the first gear 8 meshing with the second gear 9 at right angles also becomes the rotation axis of the second gear 9. It rotates on a rotation axis that is perpendicular to the axis. Therefore, the remote wire 1
The rotation from zero is transmitted here to the push rod 7 which is coaxially and integrally rotated with the first gear 8 by changing the transmission direction to a substantially right angle. When the push rod 7 rotates in either the forward or reverse direction, the slide nut 6 engaged with the male thread portion 21 of the push rod 7 rotates in the through hole 18 and moves back and forth on the push rod 7. Move forward or backward in either direction.
For this reason, the initial opening amount θ of the brake lever 5 changes. At this time, since the remote wire 10 extends in the radial direction of the push rod 7 from the second gear 9, the extension of the push rod 7 as in the related art despite the hydraulic cylinder 2 being placed vertically. Since there is no need to extend the upper part forward and curve the middle too much, it is arranged more straight. Therefore, the remote wire 10
The friction loss in the rotation transmission to the gear 9 is reduced. As a result, when the manual operation unit 11 is operated, the push rod 7 rotates smoothly, and the responsiveness of the adjustment is improved, so that accurate and quick adjustment is facilitated, and the moderation at the time of the adjustment becomes clear. In addition, since the remote wire 10 is not disposed with a large curvature, the space for the installation is not required so much, and the whole apparatus is relatively compact, so that the degree of freedom in the arrangement is increased and many different models are provided. Can be attached to FIG. 5 shows another embodiment in which the hydraulic cylinder 2 is arranged horizontally. In this example, one end of the push rod 7 is turned by the rotation of the brake lever 5 during braking.
When 0 is pushed, the swing plate 30 swings around the shaft 4 which is a common shaft, and the push portion 3 protruding in the direction of the hydraulic cylinder 2.
1 presses a piston (not shown) of the hydraulic cylinder 2. Also in this example, the remote wire 10 extends from the second gear 9 in the radial direction of the push rod 7, so that the same effect as in the previous embodiment can be obtained. Note that common parts with the previous embodiment use common codes. Further, the invention of the present application is not limited to the above embodiments, but can be applied in various ways. For example, the invention can be applied not only to the brake lever but also to the clutch lever. According to the invention of the present application, one end of the push rod is connected to the first gear so as to be coaxially rotatable, and a second gear meshing with the first gear at right angles is provided. The end of the remote wire opposite to the manual operation unit was connected to the gear, and the remote wire was extended from the second gear in the radial direction of the push rod. Therefore, the remote wire can be disposed more straightly without being bent so much in the middle. For this reason,
The friction loss in transmitting the rotation from the remote wire to the second gear is reduced, and as a result, when the manual operation unit is operated,
Since the push rod rotates smoothly and the responsiveness of the adjustment is improved, accurate and quick adjustment is easy, and when the adjustment is moderate, a clear sense of moderation can be obtained. In addition, less space is required for installation, and the degree of freedom in installation is increased.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing an entire brake adjusting device according to an embodiment. FIG. 2 is an exploded view of main components in the embodiment. FIG. 3 is an enlarged cross section of a main part of the embodiment. FIG. 4 is a view in which a main part is partially cut away from the direction indicated by arrow A in FIG. 3 to show an arrow. FIG. 5 is a schematic view showing the entire brake adjusting device of another embodiment. 2: hydraulic cylinder, 5: brake lever, 6: slide nut, 7: push rod, 8:
First gear, 9: second gear, 10: remote wire,
11: Manual operation unit

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshiteru Yamamoto 8-18-4 Nobomu, Niiza-shi, Saitama Prefecture Honda Racing Co., Ltd. (72) Inventor G. Mario Chironi Dalmine Biacosimo Fanzago, Italy 16 (56) References JP-A 2-103889 (JP, U) JP-A 2-81291 (JP, U) JP-A 6-29994 (JP, U) (58) Field surveyed (Int.Cl. ⁷ , DB name) B62K 23/06 B62L 3/02 B62M 25/04 G05G 1/04

Claims (1)

(57) [Claims 1] A hydraulic cylinder mounted on a handlebar of a motorcycle, a lever rotatably mounted on the hydraulic cylinder, and a lever rotatably mounted on the lever. An automatic 2 equipped with a push rod that presses the piston of the hydraulic cylinder when the lever is pulled and changes the position of the lever when rotated when the lever is released, and a remote wire for rotating the push rod remotely. A first gear in which one end of a push rod is connected to be coaxially rotatable;
A second gear meshing with the first gear at right angles;
A motorcycle comprising: a second gear connected to an end of the remote wire opposite to the manual operation portion; and the remote wire extending from the second gear in a radial direction of the push rod. Brake adjuster.