JPH0920278A - Brake regulating device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brake regulating device for a vehicle to perform manual operation without needing a remote wire and facilitate manufacture. SOLUTION: A brake regulating device for a vehicle comprises a fluid pressure feeding device 2 mounted on the handle bar 1 of a vehicle and feeding working fluid to a brake device; a brake lever 9 rotatably mounted on the handle bar 1; a control rod 19 axially moved in linkage with rotation of the brake lever 9 and controlling operation of the fluid pressure feeding device 2, and an operation shaft arranged orhtogonally to the control rod 19 and having a manual operation part 38. A rotation transmission mechanism 34 is provided to transmit rotation of the operation shaft to the control rod 19 and regulate the engagement position in an axial direction of the brake lever 9 with the control rod 19. The rotation transmission mechanism 34 comprises a worm 36 fixed on the operation shaft; and a work wheel 37 fixed to the control rod 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake adjusting device for a vehicle, such as a motorcycle or a four-wheeled vehicle, having a handlebar for adjusting the position of a lever such as a brake lever.

[0002]

2. Description of the Related Art For example, in a motorcycle for racing,
There are cases where it is desired to adjust the effectiveness of the brake according to changes in various running conditions. As such a brake adjusting device, a brake lever is rotatably attached to a hydraulic cylinder (master cylinder) fixed to a handlebar, and the piston rod of the hydraulic cylinder is pushed inward by rotating the brake lever to control the hydraulic pressure. A push rod for generating power is rotatably supported by the brake lever, and a manual operating section for rotating the push rod via a remote wire is supported at a position near the left clutch lever on the handlebar. What has been known is. This brake adjusting device is configured such that, when a push rod is rotated via a remote wire by a rotation operation of a manual operation unit, an axial engagement position of the brake lever with respect to the push rod changes, and the position of the brake lever changes. Has become.

[0003] When connecting the remote wire to the push rod so as to be able to transmit the rotation and pull the remote wire to a position near the clutch lever, either a direct extension type or a lateral extension type is employed. In the direct ejection method, the other end of a remote wire having a manual operation unit at one end is coaxially connected to the tip of a push rod. On the other hand, in the lateral projection method, the first bevel gear is fixed to the tip of the push rod,
A second bevel gear meshing with the first bevel gear at a right angle is provided, and an end of the remote wire opposite to the manual operation unit is connected to the second bevel gear, and the remote wire is substantially connected to the push rod. It is pulled out in a transverse direction perpendicular to the direction (see Japanese Patent Application Laid-Open No. 6-255565).

[0004]

The direct-projection method has an advantage that the operation force of the manual operation unit is relatively light because the rotation of the manual operation unit is directly transmitted to the push rod via the remote wire. On the other hand, when the push rod of the hydraulic cylinder is arranged so as to extend in the front-rear direction of the vehicle body, the remote wire connected to the distal end of the push rod is drawn out so as to extend forward of the vehicle body, and then intermediately. It must be arranged so as to be bent to a large angle of about 90 ° or more and guided to a position on the left hand side of the handlebar, and a relatively large wiring space is required in front of the handlebar. Therefore, depending on the type of the motorcycle, it may be difficult to route and wire the remote wire due to the presence of a windshield hood or the like.

[0005] On the other hand, the horizontal protruding method aims to solve the above-mentioned drawbacks of the direct protruding method by pulling out the remote wire in a left direction substantially perpendicular to the push rod. However, since the rotation shaft of the second bevel gear to which the push rod is connected can be supported only by the cantilever structure, it is likely to rattle due to the vibration during the running of the motorcycle. If the second bevel gear bites into the first bevel gear due to the rattling of the rotating shaft, the manual operation unit requires a relatively large operating force and cannot rotate smoothly. On the other hand, if the meshing of the second bevel gear with the first bevel gear is set loosely in advance in consideration of the rattling of the second bevel gear, when the second bevel gear rattles, In some cases, idle rotation of the second bevel gear occurs due to poor meshing between the two bevel gears, and the rotation of the manual operation unit is not accurately transmitted to the push rod, and the effectiveness of the brake cannot be quickly adjusted. Therefore, the gear case for supporting both bevel gears is expensive because it needs to be manufactured with high precision so that poor engagement of the two bevel gears does not occur. Further, in both the laterally extending system and the above-mentioned direct extending system, the handling of the remote wire is troublesome.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle brake adjusting device that can be manually operated without requiring a remote wire and that can be easily manufactured.

[0007]

According to one aspect of the present invention, there is provided a brake control device for a vehicle, which is mounted on a handlebar of the vehicle and supplies working fluid to the brake device. A pressure supply device, a brake lever rotatably attached to the handlebar, a control rod that moves in the axial direction in conjunction with the rotation of the brake lever, and controls the operation of the fluid pressure supply device, An operation shaft that is disposed orthogonal to the control rod and has a manual operation unit, and a rotation that transmits rotation of the operation shaft to the control rod to adjust an engagement position of the brake lever with respect to the control rod in the axial direction. A transmission mechanism.

According to a second aspect of the present invention, there is provided a brake adjustment device for a vehicle, wherein the rotation transmission mechanism according to the first aspect has a worm fixed to an operation shaft and a worm wheel fixed to the control rod. Both sides of the worm are rotatably supported by a bracket attached to the brake lever, at least one end of the operation shaft projects outward from the bracket, and the manually operated portion is attached to the projected one end. It is configured to have a section.

According to a third aspect of the present invention, there is provided a brake adjusting device for a vehicle, wherein the other end of the operating shaft in the second aspect projects outward from the bracket, and the operating shaft is manually rotated to the projecting other end. A connecting portion is provided to which the operating means is connected.

According to a fourth aspect of the present invention, there is provided a brake adjusting device for a vehicle, the fluid pressure supplying device being installed on a handlebar of a vehicle to supply a working fluid to the braking device, and rotatably attached to the handlebar. Brake lever,
It moves axially in conjunction with the rotation of this brake lever,
A control rod for controlling the operation of the fluid pressure supply device by pressing and moving the control member of the fluid pressure supply device at the base end portion, and a manual operation portion provided at the tip end portion of the control rod. Is equipped with.

[0011]

According to the first aspect of the present invention, when the operating portion is manually rotated with the brake lever released, the rotation of the operating shaft of the operating portion is transmitted by the rotation transmission mechanism to the transmission direction. It is converted to a substantially right angle and transmitted to a control rod arranged perpendicular to the operating axis. When the control rod rotates, the engagement position of the brake lever with respect to the control rod moves along the axial direction of the control rod. Thereby, the angle of the brake lever rotatably attached to the handlebar in the released state with respect to the handlebar is changed. When this brake lever is rotated by pulling it toward the handlebar side, the control rod moves axially in synchronism with the rotation of the brake lever, causing the working fluid to flow from the fluid pressure supply device to the brake device. The supplied fluid pressure is generated according to the movement amount of the control rod, and the traveling vehicle is braked.

Therefore, as described above, when the angle of the brake lever with respect to the handlebar in the released state is changed, the rotation angle when the brake lever is operated so as to approach the handlebar at a predetermined interval is different. The effectiveness of the brake also changes. That is, the degree of effectiveness of the brake can be adjusted by rotating the operation unit.
In this brake adjustment device, a manual operation unit is directly attached to an operation shaft arranged orthogonal to the control rod, and the degree of braking effect is manually adjusted without the need for a remote wire as in the conventional device. As a result, the rotation of the operation shaft by the operation of the operation unit is smoothly transmitted to the control rod, and the responsiveness of the brake adjustment is improved. In addition, the troublesome work of wiring the remote wires can be omitted, and the wiring space for the remote wires is not required, so that the present invention can be applied to various vehicles as it is.

According to the brake adjusting device for a vehicle of the second aspect, the rotation transmitting mechanism for converting the rotation of the operating shaft to the transmitting direction of a substantially right angle and transmitting it to the control rod is fixed to the operating shaft of the operating portion. And a worm wheel fixed to the control rod. Since the operation shaft to which the worm is fixed can be supported by the double-sided structure, the operation shaft does not rattle even when subjected to vibration during traveling of the vehicle. Therefore, the worm always maintains a good meshing state with the worm wheel, so that the operation unit can always be smoothly operated with a small operation force, and the rotation of the operation shaft is accurately transmitted to the control rod. Here, since the operation shaft of the worm is supported by the brackets at both ends, high-precision processing for preventing the inclination of the operation shaft is not required, so that the production becomes easy and the cost is reduced.

In addition, the bracket can be manufactured without requiring high dimensional accuracy since it only supports the both sides of the worm on the operating shaft in a freely rotatable manner. In addition, the worm is engaged with the worm wheel of the control rod at right angles. Can also be projected. Therefore, the manual operation part is attached to either the left or right side of the bracket as required.

According to the brake adjusting device for a vehicle of the third aspect, the operating shaft having the operating portion provided at one end portion protruding from the bracket is provided with the connecting portion at the other end portion protruding outward from the bracket. Has been. Therefore, one end of the remote wire is connected to the connecting portion of the operating shaft as necessary, and a manual operating portion such as a knob provided at the other end of the remote wire is moved to a position close to the clutch lever on the handlebar. Can be arranged. This allows remote adjustment with your left hand. In addition, since the operation axis is arranged orthogonal to the control rod, the remote wire can be extended to the left almost perpendicular to the control rod and wired almost straight to the handlebar. And the rotation of the operation unit can be smoothly transmitted to the control rod.

According to the vehicle brake adjusting device of the fourth aspect of the present invention, since the manual operation portion is directly provided at the tip end portion of the control rod, the rotation transmitting direction of the operation portion is changed. Since the rotation transmission mechanism and the like are unnecessary and the configuration is simplified, the manufacturing cost is reduced. Furthermore, in addition to eliminating the large wiring space and friction loss due to the provision of the remote wire, the operating part can be installed in front of the vehicle, so either the right hand or the left hand can be manually operated depending on the driving condition. it can.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view showing a vehicle brake adjusting apparatus according to one embodiment of the present invention, and FIG. 2 is a longitudinal sectional plan view showing an enlarged main part. In FIG. 1, a handlebar 1 is arranged in the vehicle width direction in front of a driver's seat, and a fluid pressure supply device 2 such as a hydraulic cylinder (master cylinder) is provided near a right grip of the handlebar 1. Is fixed. The fluid pressure supply device 2 is disposed vertically in the front-rear direction of the vehicle body,
Piston rod 4 slidably built in its length direction
Is operated by operating the brake lever 9 described later.
When it is depressed, a working fluid such as oil is supplied to a disk brake device (not shown) of the wheel. As a result, the brake device operates to apply a braking force to the wheels by the pressure of the working fluid. When the pressing of the fluid pressure supply device 2 against the piston rod 4 is released, the working fluid returns to the fluid pressure supply device 2 by the fluid pressure, and the braking force is released.

In the case 3 of the fluid pressure supply device 2, a bifurcated mounting piece 7 is integrally protruded forward from the vehicle body, and the mounting piece 7 is attached to a brake lever via a mounting shaft 8. Nine lever base ends 10 are rotatably mounted. That is, the brake lever 9 is rotatably attached to the handlebar 1 via the case 3. In the brake lever 9, a lever operating portion 11 is detachably connected to a lever proximal end portion 10 by a bolt 12 and a nut 13, and an arbitrary lever operating portion 11 according to a driver's preference can be connected to the lever proximal end portion. It can be replaced by 10 and connected.

In FIG. 2, an insertion hole 14 is formed at the center of the lever base end portion 10 and penetrates the vehicle body in the front-rear direction at right angles to the length direction.
A holding hole 15 is formed at the center of the vehicle body, which crosses at a substantially right angle and penetrates vertically in the vehicle body. A columnar engaging pin 17 is fitted into the holding hole 15 and is fixed by a later-described configuration to prevent rotation. The engaging pin 17 is formed with a screw hole 18 penetrating in the diameter direction.
The control rod 19 penetrates the engagement pin 17 in a state where the threaded portion 20 of the control rod 19 is screwed to the control rod 19. In this way, the control rod 19 is arranged in the front-rear direction of the vehicle body as is clear from FIG. 1, and the spherical portion 19 a provided at the base end portion is the piston rod 4 in the fluid pressure supply device 2.
Are rotatably engaged with a spherical seat 26 formed by a plate 21 at the tip of the cover 21 and a cover 25 attached to the case 3 by a retaining ring 16 which is superimposed on the plate 21 and via an engaging pin 17. And is engaged with the brake lever 9.

FIG. 3 is a cross-sectional right side view of the above embodiment, FIG. 4 is a front view as viewed from the direction of arrow IV in FIG. 3, and FIG.
It is a line sectional view. In FIG. 3, a bracket 22 is attached to a base end portion 10 of the brake lever 9 via an engaging pin 17 so as to be relatively movable. That is, as shown in FIG. 4, the bracket 22 has the upper mounting piece 23 and the lower mounting piece 24 whose base ends are fitted in irregular shapes as shown in FIG. As shown in the figure, it has a substantially U-shape, and an engagement pin 17 is inserted into an elliptical mounting hole 23a formed at the tip of the upper mounting piece 23.
A set screw 28 is slidably fitted into the lower end of the lower mounting piece 24, and a projection 17a of the engaging pin 17 is slidably inserted into an oblong mounting hole 24a formed at the tip of the lower mounting piece 24. It is fitted in. A bearing 30 is fitted and fixed to the base end of the lower mounting piece 24. The control rod 19 is rotatably supported by inserting a portion near the distal end of the bearing 30 into the bearing 30, and is stopped by a retaining ring 31. I have.

As shown in FIGS. 2 and 4, a pair of rectangular plate-like support pieces 24c and 24d are integrally formed on the lower mounting piece 24 at both sides in the width direction near the base end in a face-to-face state. The operating pieces 3c are provided on the support pieces 24c and 24d.
2 are arranged so as to bridge the bearings 33, 33 of FIG.
It is rotatably supported by. The operation shaft 32 includes
The worm 3 is provided at a position between the support pieces 24c and 24d.
6 is fixed so as to be integrally rotatable. This warm 36
The worm wheel 37 which meshes with the worm wheel 37 and constitutes the rotation transmission mechanism 34 is fixed to a position near the distal end of the control rod 19 so as to be integrally rotatable. In addition, as shown in FIG. 2, both ends of the operation shaft 32 are projected outward by inserting the support pieces 24c and 24d, and the right end of the operation shaft 32 is manually operated like a knob. The portion 38 is integrally rotatably fixed, and the left end portion of the operation shaft 32 is fixed with a connecting portion 39 that is integrally rotatably connected to a remote wire 40 having a manual operation portion 41 at one end. There is.

Further, as shown in FIG.
The four engaging grooves 4 are provided at equal intervals of 90 °
2 are formed in parallel with each other in the axial direction, and the ball 43 engaged so as to be fitted in the engagement groove 42 is provided with the engagement pin 17.
Of the fixed shaft 4 fitted into the projection 17a of the
4 is urged by a spring 47 housed in the housing 4 so as to be pressed into one of the engagement grooves 42. The control rod 19 has a spherical portion 19a at the base end rotatably supported by the spherical seat 26 and a distal end rotatably supported by the bearing 30, and the ball 43 is sequentially engaged with each engagement groove 42 with the rotation. When they are combined, they rotate with moderation.

Next, the operation of the above embodiment will be described. When the user operates the brake lever 9 shown in FIG.
The brake lever 9 rotates about the mounting shaft 8 as a fulcrum. The control rod 19 engaged with the brake lever 9 via the engagement pin 17 is moved to the rear side of the vehicle along the axial direction in conjunction with the rotation of the brake lever 9. With the movement of the control rod 19, the piston rod 4 is pushed into the fluid pressure supply device 2, and the high pressure working fluid is supplied from the fluid pressure supply device 2 to the brake device. Thereby,
A fluid pressure corresponding to the amount of movement of the control rod 19 is generated, and braking is applied to the traveling wheels.

When it is desired to adjust the degree of braking effect when the brake lever 9 of a vehicle, for example, a motorcycle, is operated, the operating portion 38 is pinched with the right or left fingertip and rotated in either the forward or reverse direction. The rotation of the operation shaft 32 of the operation section 38 is transmitted to the control rod 19 after the transmission direction is changed to a substantially right angle by the rotation transmission mechanism 34 including the worm 36 and the worm wheel 37 in FIG. The engagement pin 17 in which the screw hole 18 is engaged with the screw portion 20 of the control rod 19 moves in one of the axial directions with the rotation of the control rod 19. At this time, the engagement pin 17
Of the mounting hole 2 above the bracket 22
3a, and the protrusion 17a slides in the lower mounting hole 24a.
9 and the bracket 22. The brake lever 9 connected to the engagement pin 17 rotates with the mounting shaft 8 of FIG. 1 as a fulcrum as shown by a solid line and a two-dot chain line with the movement of the engagement pin 17.

When the brake lever 9 rotates as described above, the amount by which the control rod 19 is pushed by the brake lever 9 when the brake lever 9 is gripped and operated so as to approach the handlebar 1 differs. Changes the effectiveness of That is, the degree of effectiveness of the brake can be adjusted by rotating the operation unit 38.

In the brake adjusting device, a rotation transmission mechanism 34 for converting the rotation of the operation shaft 32 into a substantially right-angle transmission direction and transmitting the rotation to the control rod 19 is constituted by a worm 36 and a worm wheel 37. , Warm 3
As shown in FIG. 5, reference numeral 6 denotes a bevel gear that can be supported by a two-sided structure, unlike a bevel gear that can only be rotatably supported by a cantilever structure used in a conventional brake adjusting device.

Since the rotation transmitting mechanism 34 is configured using the worm 36 which can be supported rotatably by a double-sided structure, the following effects can be obtained. That is, the worm 36 is held in a state where it does not rattle even when it is subjected to vibration due to the running of the vehicle, so that the manual operation unit 38 is connected to the operation shaft 32 to which the worm 36 is fixed. Even if it is directly mounted, it is possible to rotate without trouble. As a result, the rotation transmission loss due to the conventional remote wire is eliminated, and the responsiveness of brake adjustment by the operation of the operation unit 38 is improved. And warm 3
6 is always maintained in a state without rattling as described above, so that a good meshing state is always maintained with the worm wheel 37, so that the operation unit 38 can be smoothly rotated with a light operating force at all times. . Thereby, the rotation of the operation shaft 32 is smoothly transmitted to the control rod 19,
By operating the operation unit 38, a desired degree of braking effect can be adjusted.

Further, since the degree of braking can be adjusted without the need for a remote wire as described above, not only the troublesome wiring of the remote wire can be omitted, but also
Since the bracket 22 only supports the both ends of the operation shaft 32 rotatably, the bracket 22 can be easily manufactured without requiring high dimensional accuracy, and the manufacturing cost can be reduced.

The operation shaft 32 has a double-sided structure and a bracket 2.
Since the bracket 22 is supported by the bracket 22, the bracket 22 can be projected outward on either side of the bracket 22. That is, the operation unit 38 can be selectively provided on either the left or right side of the bracket 22. In the above embodiment, the case where the operation unit 38 is provided on the right side is illustrated because the connection unit 39 is provided on the left end of the operation shaft 32.
Is not added, the operation unit 3 is attached to the left end of the operation shaft 32.
8 can be provided.

On the other hand, in the above embodiment, since the connecting portion 39 is provided at the left end of the operation shaft 32, one end of the remote wire 40 is connected to the connecting portion 39 as necessary, and the remote wire 40 is connected. A manual operation unit 41 such as a knob provided at the other end of the handlebar 1 can be disposed at a position close to the clutch lever on the handlebar 1. As a result, the user can manually operate the brakes with his left hand. In this case, the remote wire 40 can be disposed almost perpendicularly to the control rod 19 in the left direction, and can be wired straight to the predetermined portion of the handlebar 1 without substantially bending. There is an advantage that the rotation is transmitted to the control rod 19 with almost no loss and a large wiring space is not required.

FIG. 6 is a vertical plan view showing a brake adjusting device for a vehicle according to another embodiment of the present invention. In FIG. 6, the same or equivalent parts as those in FIGS. 1 to 4 are designated by the same reference numerals. And its description is omitted. Explaining only the configuration different from that of the above-described embodiment, the manual operation portion 38 is coaxial with the tip end portion of the control rod 19 projecting to the front side of the vehicle without providing the rotation transmission mechanism 34 of the above embodiment. It is attached directly so that it can rotate.

In this embodiment, as in the case of the previous embodiment, in addition to eliminating the large wiring space and friction loss due to the remote wire, the rotation transmitting mechanism is disabled, so that the structure can be simplified. Therefore, a significant cost reduction can be achieved, and the meshing state of the rotation transmission mechanism is always maintained in a good condition even if vibration is generated during traveling.

[Brief description of the drawings]

FIG. 1 is a plan view showing a vehicle brake adjusting device according to an embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional plan view of a main part of the embodiment.

FIG. 3 is a cross-sectional right side view of FIG. 2;

FIG. 4 is a front view as seen from the direction of arrow IV in FIG. 3;

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

FIG. 6 is a vertical cross-sectional plan view of essential parts showing a brake adjusting device for a vehicle according to another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Handlebar, 2 ... Fluid pressure supply device, 9 ... Brake lever, 19 ... Control rod, 22 ... Bracket, 32 ...
Operation shaft, 34 ... Rotation transmission mechanism, 36 ... Worm, 37 ...
Worm wheel, 38 ... operation part, 39 ... connection part, 40
... Remote wire (operation means).

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kazuhiro Maeda 1-1 Kawasaki-cho, Akashi-shi, Hyogo Kawasaki Heavy Industries Ltd. Akashi factory (72) Inventor Yasuhisa Okabe 1-1, Kawasaki-cho, Akashi-shi, Hyogo Kawasaki Heavy Industries Akashi Factory Co., Ltd.

Claims (4)

[Claims] 1. A fluid pressure supply device mounted on a handlebar of a vehicle and supplying a working fluid to a brake device, a brake lever rotatably mounted on the handlebar, and interlocked with the rotation of the brake lever. And move in the axial direction,
A control rod for controlling the operation of the fluid pressure supply device, an operation shaft arranged orthogonal to the control rod and having a manual operation part, and a rotation of the operation shaft transmitted to the control rod to transmit the brake lever A brake adjusting device for a vehicle, comprising: a rotation transmitting mechanism that adjusts an axial engagement position with respect to the control rod. 2. The rotation transmission mechanism according to claim 1, further comprising a worm fixed to an operation shaft and a worm wheel fixed to the control rod, wherein both side portions of the worm on the operation shaft are: A rotatably supported bracket mounted on the brake lever, at least one end of the operating shaft projecting outward from the bracket, and a vehicle equipped with the manual operating part at the projecting one end. Brake adjustment device. 3. The connecting portion according to claim 2, wherein the other end of the operating shaft projects outward from the bracket, and the operating other end for manually rotating the operating shaft is connected to the protruding other end. Brake adjustment device for vehicles equipped with. 4. A fluid pressure supply device mounted on a handlebar of a vehicle to supply a working fluid to a brake device, a brake lever rotatably attached to the handlebar, and interlocked with the rotation of the brake lever. Then move axially,
A control rod for controlling the operation of the fluid pressure supply device by pressing and moving the control member of the fluid pressure supply device at the base end, and a manual operation part provided at the tip end of the control rod. Brake adjustment device for vehicles equipped with.