JPH01212625A - Cruise control resetting device for vehicle - Google Patents

Abstract

PURPOSE:To facilitate each operation for a thumb throttle lever and a reset means by arranging the reset means for a cruise control means in the vicinity of the thumb throttle lever and permitting the operation by the thumb of a driver's hand set on a grip. CONSTITUTION:A carburetor 26 is installed into an intake pipe 24 connected with an engine 14, and the throttle valve 28 of the carburetor 26 is opening/ closing-operated by a servomotor 30. While, in the vicinity of the right side grip 18a of a steering wheel bar 18, a thumb throttle lever device 34 is arranged. The servomotor 30 is controlled by a controller 52 on the basis of each detection signal supplied from the angle sensor 46, etc. of the thumb throttle lever 40. In this case, a reset button 66 is arranged at a prescribed position of the thumb throttle lever device 34 and can be operated by the thumb of a driver's hand set on the grip 18a. Then, cruise control is released by the operation of the reset button 66.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cruise control reset device that is applied to a vehicle that has a thumb throttle lever on its handlebar.

(Background of the Invention) It is widely known that a vehicle for traveling on rough terrain is provided with a thumb throttle lever near the handlebar grip, which is operated by the thumb of the driver's hand holding the grip. When this type of vehicle is provided with a cruise control device for maintaining the vehicle running speed and engine speed substantially constant, a problem arises as to how to set or reset the cruise control device.

In other words, in this case, not only do you have to grip the handlebar with both hands, but you also have to keep pressing the thumb throttle lever with the thumb of the other hand, so you cannot take your hand off the grip. The hand that is not operating the thumb throttle lever is usually required to operate various other operation switches, such as the direction indicator light switch, kill switch, horn switch, etc., so the cruise control device is operated using the thumb. It is desirable to be able to do this with only the hand on the throttle lever side.

(Objective of the Invention) The present invention was made in view of the above circumstances, and allows the hand on the thumb throttle lever side to easily reset the cruise control device, and at this time, the hand on the thumb throttle lever side can be easily reset. To provide a cruise control reset device for a vehicle that does not become an obstacle.

(Structure of the Invention) According to the present invention, this purpose is to maintain a constant vehicle running speed or engine speed with a thumb throttle lever that extends below the grip of the handlebar and is rotated by the thumb of the hand that grips the grip. In a vehicle equipped with a cruise control device, a reset means for the cruise control device is arranged near the thumb throttle lever and closer to the driver than the center line of the handlebar, and the reset means for the cruise control device is arranged in the vicinity of the thumb throttle lever and closer to the driver than the center line of the handlebar, and the reset means for the cruise control device is arranged in the vicinity of the thumb throttle lever and closer to the driver than the center line of the handlebar. This is achieved by a cruise control reset device for a vehicle, characterized in that the reset means is operable.

(Embodiment) Figure 1 is an overall conceptual diagram of an embodiment of the present invention, Figures 2 and 3 are
The figures are a side view and a plan view of a four-wheeled off-road vehicle to which this embodiment is applied, FIG. 4 is a plan view of the thumb throttle lever device, FIG. 5 is a side view thereof, and FIG. 6 is the same as in FIG. ■−
(2) Line sectional view, FIG. 7 is a partially cutaway f-plane view of the thumb throttle lever device.

In Fig. 2.3, the symbols to and to are steering front wheels with wide ultra-low pressure tires, 12.12 are driving rear wheels with similar tires, and 14 is an engine mounted near the center of the vehicle body. The output of the engine 14 is transmitted to the rear wheels 12 by a drive shaft 16 shown in FIG. A steering handlebar 18 is provided at the front of the upper part of the vehicle body, and a fuel tank 20 and a straddle-type driver's seat 22 are sequentially provided behind the steering handlebar 18.

A carburetor 26 is attached to an intake pipe 24 connected to the engine 14. The throttle valve 28 of this carburetor 26
As shown in FIG. 1, the rotation of a servo motor 30 serving as an actuator is transmitted via a reduction gear 32. That is, the throttle valve 28 is opened and closed by the motor 30.

A thumb throttle lever device 34 is attached near the right grip 18a of the handlebar 18. As shown in FIG. 6, this device 34 has a case 36 consisting of a lower case half 36a fixed to the handlebar 18 side and an upper case half 36b that is covered from above. A support shaft 38 passes through the lower case half 36a almost vertically, a thumb throttle lever 40 is fixed to its lower protruding end, and a lever 42 is fixed to its upper end. This case 3
The lever 42 on the inside of the lever 42 is given a return behavior clockwise in FIG. 7 by a return spring 44. Additionally, an angle sensor 46 consisting of a potentiometer is provided on the upper case half 36b.
is attached, and the shaft 46a of this angle sensor 46 is located on the same axis as the support shaft 38 on the lower case half 36b side. A lever 48 is fixed to the shaft 46a as shown in FIG.
In the figure, a clockwise return habit is given. Lever 4
The rotating end of the lever 42 is engaged with the rotating end of the lever 42 so as to transmit the rotation of the grip lever 40 in the counterclockwise direction (speed increasing direction). Therefore, if the upper case half 38b is fixed over the lower case half 36a while the pivot ends of both levers 48, 42 are engaged, the shaft 46a can be interlocked with the support shaft 38.

The output signal 0 of the angle sensor 46 indicates the amount of rotation fIJ of the thumb throttle lever 40. This output signal θ is input to the control device 52. The control device 52 is composed of a CPU, an input/output interface, etc., and performs a predetermined operation according to an operation program stored in a ROM 54, and determines the opening degree e of the throttle valve 28 based on the signal 0, which becomes the opening degree θ. The motor 30 is driven and operated as follows. 56 is R
AM, 58 is a driver for driving the motor 30.

Next, the cruise control device will be explained.

In FIG. 1, a speed sensor 60 detects the vehicle speed determined from the rotational speed of the rear wheels 12 and inputs it to the control device 52. 62 is a CDI ignition device, and the engine rotational speed N is detected from the ignition signal and inputted to the control device 52.

Also, the case 36 of the thumb throttle lever assembly W134
A set button 64 as a setting means and a reset button 66 as a reset means are attached to the.

Here, the set button 64 is located in front of the center line A (FIG. 4) along the length of the handlebar 18, that is, in the case 3.
6, and can be operated with the index finger of the driver's hand holding the grip 18a. Further, the reset button 66 is provided behind the center line A of the handlebar 18, that is, on the rear surface of the case 36, and can be operated with the thumb of the hand gripping the grip 18a.

Therefore, if you hold the grip 18a and press the thumb throttle lever 40 with your thumb, and while driving with the throttle valve 28 open, if you release only the index finger of the same hand from the grip 18a and press the set button 64, the set signal α is controlled. The vehicle speed or engine speed N at that time is input to the means 52 and stored in the RAM 5B. Thereafter, the motor 30 is controlled and the opening degree e is controlled so as to maintain this speed or Nttm. At this time, the speed and N are kept constant regardless of the operation of the thumb throttle lever 40.

Also, while the cruise control is in operation, the thumb is separated from the thumb throttle lever 40, so if the reset button 66 is pressed with this thumb, the cruise control operation is canceled, and from now on, if the thumb throttle lever 40 is operated with this thumb, the operation will be canceled. The opening degree of the throttle valve 28 is controlled according to the amount of movement. Note that this cruise control operation can be canceled not only by the reset button 66 but also by brake operation,
Of course, it may be performed in response to a gear shift operation.

In FIGS. 4 to 6, reference numeral 68 denotes an indicator lamp, which is attached to the upper surface of the case 36 so as to turn on in the direction of the driver. This lamp 68 lights up when the set button 64 is pressed to enter the cruise control state, so that the driver can easily visually confirm the condition.

°° In this embodiment, the control device 52 using a CPU has a cruise control function, but the present invention is not limited to this, and also includes applications to mechanical cruise control devices such as a centrifugal governor. Further, it is preferable that the reset button 66 as a reset means is provided integrally with the rear surface of the case 36, but a separate reset means may be separately attached near this button.

(Effects of the Invention) As described above, the present invention provides a reset means for a cruise control device which is arranged near the thumb throttle lever at a position closer to the driver than the center line of the handlebar, and which is operated by the thumb of the hand gripping the grip. Therefore, the reset means can be easily operated with the thumb while the cruise control is in operation, and the operation of the reset means does not interfere with the operation of the thumb throttle lever.

[Brief explanation of the drawing]

Figure 1 is an overall conceptual diagram of an embodiment of the present invention, Figures 2 and 3 are
The figures are a side view and a plan view of a four-wheeled off-road vehicle to which this embodiment is applied, FIG. 4 is a plan view of the thumb throttle lever device, FIG. 5 is a side view thereof, and FIG. 6 is the same as that shown in FIG. ■−
(2) Line sectional view, wS7 is a partially cutaway plan view of the thumb throttle lever device. 18...Handle par. 18a...Grip, 40...Thumb throttle lever, 66...Reset button as a reset means,
...Traveling speed, N...Engine speed. Patent applicant Yamaha Motor Co., Ltd.

Claims (1)

[Claims] In a vehicle, the thumb throttle lever extends below the handlebar grip and is rotatably operated by the thumb of the hand gripping the grip, and the vehicle travel speed, the engine speed, or a cruise control device that maintains the engine speed constant. The reset means of the cruise control device is arranged near the throttle lever and closer to the driver than the center line of the handlebar, and the reset means can be operated with the thumb of the hand gripping the grip. Cruise control reset device for vehicles.