JPH0247113Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (1) Industrial application field This invention is an adjustment device for a master cylinder that is attached to the steering wheel of a motorcycle, three-wheeled buggy, etc. and operates a hydraulic brake, clutch, etc. In particular, the present invention relates to a device for adjusting the distance between the operating lever of a master cylinder and the grip of a steering handle.

(2) Prior art It is possible to adjust the distance between the master cylinder operating lever and the steering handle grip.
This is effective in ensuring good operability of the master cylinder regardless of the size of the operator's hands.

Conventionally, as a device for adjusting the above-mentioned opposing distance, as described in Japanese Utility Model Application Publication No. 128483/1983,
The operating lever is divided into a piston pushing member and a grip member, and the piston pushing member and the grip member are pivotally supported on the cylinder body of the master cylinder so as to be relatively rotatable. It is known that an adjustment screw is provided for adjusting the position of the grip member.

(3) Problems to be solved by the invention According to the above-mentioned conventional device, the inertial weight of the operating lever increases, so the return spring must be made stronger to suppress vibration of the operating lever when it is not in operation. If this is done, the inconvenience arises in that the ease of operation of the operating lever is impaired to some extent.

The present invention was developed in view of such circumstances, and does not reduce the operability of the operating lever.
It is an object of the present invention to provide a master cylinder adjusting device that can freely adjust the facing distance between an operating lever and a grip of a steering handle.

B. Structure of the invention (1) Means for solving the problem In order to achieve the above-mentioned object, the present invention is designed to attach the cylinder body of the master cylinder to one end of the cylinder holder fixed to the steering wheel via a pivot in the vehicle. The cylinder is rotatably supported in the longitudinal direction, and the cylinder body is connected to the other end of the cylinder holder via a distance adjustment device that adjusts the distance between the master cylinder operating lever and the steering handle grip. Features.

(2) Effect If the cylinder body of the master cylinder is rotated by an appropriate angle in the longitudinal direction of the vehicle around the pivot by operating the distance adjustment device, the distance between the operating lever, which is pivotally supported on the cylinder body, and the grip of the steering handle will be adjusted. can be adjusted freely.

(3) Embodiment An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 3, a steering handle 1 of a motorcycle includes a handle pipe 2 fixed to a front fork (not shown), and a handle pipe 2 fixed to a front fork (not shown). The operating lever 6 is composed of a pair of left and right rubber cylindrical grips 3 (only the right side is shown in the figure) attached to both ends of the handle pipe 2, and is arranged toward the front F of the vehicle facing the grips 3. The master cylinder 5 is attached to the handle pipe 2 as follows.

That is, the arcuate concave surface 7a of the cylinder holder 7 is engaged with the front half circumference of the handle pipe 2, and the arcuate concave surface 8a of the holder cap 8 is engaged with the rear half circumference of the handle pipe 2. The cylinder holder 7 is fixed to the handle pipe 2 by mutually tightening the bolts 9, 9. This cylinder holder 8 is provided with a pair of left and right ears 10 and 11, and the cylinder body 12 of the master cylinder 5 is attached to the short left ear 10 and rotates in the longitudinal direction of the vehicle via a substantially vertical pivot 13. The long ear part 11 on the right side and the cylinder body 12 are freely pivoted, and the distance adjustment device 1
They are interconnected via 4. Spacing adjustment device 14
is for adjusting the distance between the operating lever 6 of the master cylinder 5 and the grip 3 of the steering handle 1, and its structure will be described later.

The operating lever 6 is pivotally supported 15 on the cylinder body 12 so as to be able to swing back and forth in the vehicle.
An operating arm 16 integrally protrudes from the base of the cylinder body 12 and comes into contact with its rear end in order to push a piston 18 that slides into a cylinder hole 17 of the cylinder body 12 . Then,
When the operating lever 6 is pulled toward the grip 3 and the piston 18 is pushed by the operating arm 16, hydraulic pressure is generated in the hydraulic chamber within the cylinder body 12, and the hydraulic pressure is transmitted through the hydraulic conduit 19 to a hydraulic brake or clutch (not shown). and operate it.

An upper tank 20 is connected to the upper part of the cylinder body 12.

4 and 5, the distance adjusting device 14 is connected to a first connecting shaft 21 parallel to the pivot shaft 13.
and an eyebolt 23 whose eyeball part 23a is rotatably connected to the right ear part 11 of the cylinder holder 7 via this first connection shaft 21, and this eyebolt 23.
an adjustment nut 24 that is screwed into the adjustment nut 24; and a through hole 2 that is rotatably supported by the cylinder body 12 parallel to the first connecting shaft 21 and that is loosely penetrated by the eye bolt 23.
5 and a second connecting shaft 22 having a
2 and a spring 27 that is compressed between the end plate 26 attached to the end of the second connecting shaft 22 and urges the second connecting shaft 22 in the direction of contact with the adjusting nut 24. , in order to prevent this delusion, the second
Arc-shaped concave surface 24a that engages with the cylindrical peripheral surface of the connecting shaft 22
is formed.

The tip side of the eye bolt 23, the second connecting shaft 22, the spring 27, etc. are accommodated in a housing hole 28 provided in the cylinder body 12, and the outer open end of this housing hole 28 is closed by a blind cover 29. .

Next, to explain the operation of this embodiment, if the operator hooks the finger of the hand holding the grip 3 of the steering handle 1 onto the operating lever 6 of the master cylinder 5 and pulls it toward the grip 3, The actuating arm 16 pushes the piston 18 so that the cylinder body 1
A hydraulic chamber in 2 can generate hydraulic pressure for actuation of a hydraulic brake or clutch.

The distance between the operating lever 6 and the grip 3 is adjusted as follows depending on the size of the operator's hand. That is, if the adjustment nut 24 of the interval adjustment device 14 is screwed forward or backward relative to the second connecting shaft 22,
The spring 27 contracts or expands accordingly, and the eye bolt 23 advances and retreats within the through hole 25 of the second connecting shaft 22, so the interval between the first and second connecting shafts 21 and 22 increases or decreases, and accordingly, the cylinder body 12 is axis 1
3 as a result of the vehicle being rotated forward or backward,
An operating lever 6 that is pivotally supported 15 on the cylinder body 12
The distance between the grip 3 of the steering handle 1 and the handle 1 can be freely adjusted according to the size of the operator's hands.

The contact surface of the adjustment nut 24 with the second connecting shaft 22 is an arcuate concave surface 24a, so the unit rotation angle of the adjustment nut 24 is 180 degrees, and after adjustment,
By engaging the concave surface 24a with the outer peripheral surface of the second connecting shaft 22, the adjustment nut 24 can be prevented from moving inadvertently due to the contraction resistance of the spring 27.

C. Effects of the invention As described above, according to the invention, the cylinder body of the master cylinder is rotatably supported in the longitudinal direction of the vehicle at one end of the cylinder holder fixed to the steering handle, and The cylinder body is connected to the other end of the cylinder holder via a distance adjustment device that adjusts the distance between the master cylinder operating lever and the grip of the steering handle. By appropriately rotating the master cylinder in the longitudinal direction of the vehicle, the distance between the master cylinder operating lever and the steering handle can be freely adjusted according to the size of the operator's hands. Therefore, there is no need to divide the operating lever as in the past, so there is no increase in the inertial weight of the operating lever, and there is no need to strengthen the return spring, contributing to improved operability of the operating lever. .

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a plan view of the control section of a motorcycle equipped with the adjustment device of the present invention, and FIGS.
5 is a sectional view taken along the line - line and - line in FIG. 4. FIG. 1...Steering handle, 2...Handle pipe,
3...Grip, 5...Master cylinder, 6...
Operation lever, 7... Cylinder holder, 12... Cylinder body, 13... Pivot, 14... Spacing adjustment device, 21, 22... First and second connecting shafts, 23...
Eye bolt, 24...adjustment nut.

Claims (1)

[Scope of utility model registration request] The cylinder body of the master cylinder is rotatably supported in the longitudinal direction of the vehicle via a pivot at one end of the cylinder holder fixed to the steering handle, and the cylinder body is supported at the other end of the cylinder holder, and the control lever of the master cylinder is supported at the other end of the cylinder holder. 1. An adjustment device for a master cylinder, characterized in that the master cylinder is connected to a grip of a steering handle through an interval adjustment device that adjusts the facing distance between the grip and the grip of the steering handle.