JPH0546559Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (1) Industrial application field
The present invention relates to a steering device for a wheeled vehicle, and particularly to a steering device in which a steering handle is attached to a top bridge fixed to the upper end of a front fork so as to be adjustable forward and backward in the longitudinal direction of the vehicle.

(2) Prior Art As mentioned above, in a control device in which a steering wheel is attached to the top bridge so that it can move forward and backward in the vehicle longitudinal direction, the operator can adjust the position of the steering wheel according to his/her physique, which is convenient. be.

Conventionally, in such a steering device, when a master cylinder for operating a hydraulic brake or clutch is attached, the cylinder body is fixed to the steering handle.

(3) Problems to be Solved by the Invention If the cylinder body of the master cylinder is fixed to the steering handle as described above, the facing distance between the steering handle and the operating lever of the master cylinder is constant and cannot be adjusted. For this reason, particularly for operators with large or small hands, the above-mentioned opposing distance may be too narrow or too wide, resulting in poor operability of the master cylinder.

The present invention has been developed in view of the above circumstances, and is a system for two or three wheels that can freely adjust the distance between the steering handle and the operating lever of the master cylinder without impairing the position adjustment function of the steering handle. The purpose is to provide a vehicle control device.

B. Structure of the invention (1) Means for solving the problem In order to achieve the above object, the present invention uses a master cylinder equipped with an operating lever facing the steering handle as a top bridge, independent of the steering handle. The master cylinder is supported so as to be movable forward and backward in the longitudinal direction of the vehicle, and an adjustment device is provided between the master cylinder and the top bridge to adjust the forward and backward position of the master cylinder in the longitudinal direction of the vehicle independently of the steering handle. Features.

(2) Effect After adjusting the position of the steering wheel, if you move the master cylinder forward or backward in the longitudinal direction of the vehicle, the relationship between the steering wheel and the master cylinder operating lever can be adjusted without changing the adjustment position of the steering wheel. The facing distance can be adjusted freely.

Furthermore, although the distance between the operating lever and the steering handle can be adjusted as described above, the operating lever is mounted on the master cylinder and is independent from the steering handle. Therefore, the mechanical connection between the master cylinder and the operating lever is always maintained constant regardless of the adjustment position of the operating lever, so there is no possibility that the operating feeling will change even when the operating lever is adjusted. Moreover, there is no need to specially divide the operation lever into a plurality of lever parts in order to maintain the above-mentioned connection relationship.

(3) Embodiment An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, a pair of left and right front forks 1 (only the right side is shown in the figure) that support the front wheels of a three-wheeled buggy are shown. are connected by a top bridge 2 which is fixed in a bridging manner to their upper ends. The top bridge 2 is fixed to the front fork 1 by inserting the front fork 1 into a support hole 3 bored at the end of the top bridge 2, and attaching the front fork 1 to the top bridge 2, which faces the front fork 1 with a slot 4 communicating with the support hole 3. A pair of front and rear clamping pieces 5, 6, which are integral with each other, are mutually tightened with two bolts 7, 7,
This is done by reducing the diameter of the support hole 3.

Further, a handle attachment shaft 8 is provided at the end of the top bridge 2 and protrudes from the upper surface thereof, and a boss 9a at the base end of a rod-shaped steering handle 9 is rotatably fitted into the handle attachment shaft 8. will be combined. The boss 9a has a slot 11 that communicates with the inner hole 10, and a pair of opposing clamping pieces 12 and 13 are integrally formed, and these clamping pieces 12 and 13 are tightened together with bolts 14. By doing this, the inner hole 1
0 is reduced in diameter, and the steering handle 9 is fixed to the handle attachment shaft 8. Therefore, by loosening the bolt 14, the steering handle 9 can be rotated around the handle attachment shaft 8 in the longitudinal direction of the vehicle. In order to limit the range of rotation of the steering handle 21 at this time, a stopper pin 15 integrated with the steering handle 9 is loosely inserted into the slot 11 of the top bridge 2.

In the illustrated example, the handlebar attachment shaft 8 is used when fixing the top bridge 2 to the front fork 1.
Connect the upper end of the front fork 1 to the top bridge 2.
It is configured to protrude a predetermined length from the upper surface of the.

A cylindrical grip rubber 16 is attached to the grip portion of the steering handle 9.

One end of the cylinder body 21 of the master cylinder 20 is supported at the end of the top bridge 2 diagonally in front of the handlebar mounting shaft 8 via a pivot 22 so as to be rotatable in the longitudinal direction of the vehicle, and the other end is adjustable. It is connected to the top bridge 2 via a device 23 as a device. The distance adjusting device 23 is connected to an operating lever 24 which is pivotally supported on the cylinder body 21.
5 and the steering handle 9, and its configuration will be described later.

An operating arm 25a is integrally provided at the base of the operating lever 25, and this operating arm 25a abuts the rear end of the operating arm 25a in order to push a piston 27 that slides into a cylinder hole 26 of the cylinder body 21. Then,
When the operating lever 25 is rotated toward the steering handle 9 and the piston 27 is pushed by the operating arm 25a, hydraulic pressure is generated in the hydraulic chamber in the cylinder body 21, and the hydraulic pressure is equal to the hydraulic pressure connected to the cylinder body 21. The signal is transmitted through the conduit 28 to a hydraulic brake or clutch (not shown) to operate it.

In FIGS. 3 to 5, the distance adjusting device 23 includes a first connecting shaft 29 parallel to the pivot shaft 22.
An eyebolt 30 whose eyepiece 30a is rotatably connected to the top bridge 2 via the first connection shaft 29, an adjustment nut 31 screwed onto the eyebolt 30, and a cylinder parallel to the first connection shaft 29. A second main body 21 is rotatably supported by the main body 21 and has a through hole 32 that is loosely penetrated by the eye bolt 30.
A spring 35 is compressed between the connecting shaft 33 and the second connecting shaft 33 and an end plate 34 attached to the end thereof, and biases the second connecting shaft 33 in the direction of contact with the adjustment nut 31. The adjustment nut 31 includes:
In order to prevent the accidental movement, an arcuate surface 36 is formed to engage with the cylindrical peripheral surface of the second connecting shaft 33.

The tip side of the eye bolt 30, the second connecting shaft 33, the spring 35, etc. are accommodated in a housing hole 37 provided in the cylinder body 21, and the outer open end of this housing hole 37 is closed by a blind cover 38. .

Note that arrow F in the figure indicates the front of the vehicle.

Next, to explain the operation of this embodiment, in order to adjust the steering device according to the physique of the operator, first loosen the bolt 7 and move the steering handle 9 to the front or rear of the vehicle around the handle attachment shaft 8. After adjusting the distance between the steering handle 9 and the operator's seat (not shown) to suit the physique of the operator,
Tighten bolt 7.

Next, if the adjustment nut 31 of the interval adjustment device 23 is screwed forward or backward from the second connecting shaft 33,
The spring 35 contracts or expands accordingly, and the eye bolt 30 advances and retreats within the through hole 32 of the second connecting shaft 33, so the interval between the first and second connecting shafts 29, 33 increases or decreases, and accordingly, the cylinder body 21 is axis 2
2, the distance between the steering handle 9 and the operating lever 25 can be adjusted according to the size of the operator's hand.

In addition, since the contact surface of the adjustment nut 31 with the second connection shaft 33 is a circular arc surface 36, the unit rotation angle of the adjustment nut 31 is 180 degrees, and after adjustment, the circular arc surface 36 is connected to the second connection shaft 33. By engaging the outer peripheral surface of the shaft 33, the adjustment nut 31 can be prevented from moving inadvertently due to the contraction resistance of the spring 35.

C. Effects of the invention As described above, according to the invention, a master cylinder equipped with an operating lever facing the steering handle is supported on the top bridge so as to be movable in the longitudinal direction of the vehicle independently of the steering handle. An adjustment device is provided between the cylinder and the top bridge that can adjust the advance and retreat positions of the master cylinder in the longitudinal direction of the vehicle independently of the steering handle. The front and rear positions of the operating levers can be adjusted independently with respect to the top bridge. Therefore, even after adjusting the front and rear positions of the steering handles, the steering handles can be adjusted depending on the adjustment position and the size of the operator's hands. Since the facing distance from the operating lever can be freely adjusted, the operability of the master cylinder is good.

Furthermore, although the distance between the operating lever and the steering handle can be adjusted as described above, since the operating lever is mounted on the master cylinder and is independent from the steering handle, the adjustment position of the operating lever cannot be adjusted. The mechanical connection between the master cylinder and the operating lever can always be maintained constant regardless of the position of the operating lever, and there is no risk that the operating feeling will change even when the operating lever is adjusted. There is no need to specifically divide the operating lever into multiple lever parts to maintain the relationship.
This is advantageous in increasing the overall strength of the operating lever and simplifying its structure.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a plan view of a three-wheeled buggy control device, FIGS. 2 and 3 are cross-sectional views taken along lines - and - of FIG. 1, and FIG. 3 is a sectional view taken along the - line in FIG. 3. 1...Front fork, 2...Top bridge, 8...Handle mounting shaft, 9...Steering handle, 20...Master cylinder, 22...Pivot, 2
3... Device as an adjustment device, 25... Operating lever.

Claims (1)

[Scope of utility model registration request] In a control device for a two- or three-wheeled vehicle, in which a steering handle 9 is attached to a top bridge 2 fixed to the upper end of a front fork 1 so as to be adjustable in forward and backward directions of the vehicle, the operating lever 2 faces the steering handle 9.
5 is supported on the top bridge 2 so as to be movable in the longitudinal direction of the vehicle independently of the steering handle 9. Between the master cylinder 20 and the top bridge 2, Use the steering handle 9 to adjust the direction forward/backward position.
A control device for a two- or three-wheeled vehicle, characterized in that it is provided with an adjustment device 23 that can be adjusted independently from the control device.