JPH0373493B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle auto-cruise device for driving a vehicle such as a motorcycle or an automobile at a preset constant speed. Conventionally, even when the vehicle is auto-cruising, the throttle valve operating system is released from the auto-cruise actuator operating system to arbitrarily increase the throttle valve opening, thereby increasing the vehicle speed above a set value. Moreover, there is no play in the operating system of the auto-cruise actuator during acceleration, and an auto-cruise device that prevents noise and disengagement due to the play is developed by Jikosho, for example. Although it is already known as disclosed in Japanese Patent No. 55-22974, in the conventional method, while the auto cruise actuator is operating,
Since the operating force exceeds the spring force of the throttle valve return spring, it has been difficult to actively close the throttle valve by simply returning the throttle operator to the closing side.

The present invention has been proposed in view of the above, and an object of the present invention is to provide an auto-cruise device for a vehicle that can solve the above-mentioned conventional problems. In order to achieve such an object, the present invention provides a system between a throttle valve of an engine and a throttle operator that can be operated in two directions, so that the throttle valve is operated in response to the operational force of the operator in one direction. A valve-opening interlocking mechanism for forcibly opening the valve and a valve-closing interlocking mechanism for forcibly closing the throttle valve in response to an operating force in the other direction of the operator are interposed in parallel with each other, and the valve-opening interlocking mechanism A relay board is interposed in the middle of the relay board, and a control board that is movable in the same way as the relay board is arranged adjacent to the relay board, and when the control board moves in one direction, the relay board is disposed adjacent to the relay board. A drive unit for moving the plate in the opening direction of the throttle valve is provided, an actuating member for an auto cruise actuator that can automatically rotate the control plate, and a return spring that biases the control plate in the other direction. It is characterized by being connected to.

Embodiments of the present invention will be described below with reference to the drawings. First, in FIG. 1 showing a first embodiment, E is a motorcycle engine, and its intake system is equipped with a carburetor 1. The throttle valve 2 of the carburetor 1 is opened and closed by reciprocating a throttle drum 3 fixed to the outer end of its valve shaft 2a. Valve opening wire 4, valve closing wire 5, and valve closing spring 6
The starting ends of both wires 4 and 5 are connected to a grip drum 8 which is rotatably operated by a throttle grip 7 as a throttle operator attached to a steering handle H. Therefore, when the grip drum 8 is rotated in one direction a, the valve opening wire 4 is pulled and the throttle drum 3 is rotated in the direction of closing the throttle valve 2, and when the grip drum 8 is rotated in the other direction b, the valve is closed. wire 5
The throttle drum 3 can be rotated in the opening direction of the throttle valve 2 by pulling the valve opening wire 4, and the valve opening wire 4 is connected to the valve opening interlocking mechanism of the present invention, and the valve closing wire 5 is connected to the valve opening interlocking mechanism of the present invention.
constitute the valve closing interlocking mechanism of the present invention.

The valve opening wire 4 includes a drive wire 4a on the grip drum 8 side and a driven wire 4 on the throttle drum 3 side.
Both wires 4a and 4b are connected to the vehicle body F.
A relay plate 10 rotatably supported by a pivot 9 at
are connected to each other through. Therefore, the valve opening wire 4 corresponds to the interlocking member of the present invention.

A control plate 11 rotatably supported by the pivot shaft 9 is disposed adjacent to one side of the relay plate 10 . This control plate 11 has a drive part, that is, a drive claw 12 that can come into contact with the end surface of the relay plate 10 on the driven wire 4b side.
(see FIG. 2). Therefore, when the control plate 11 is rotated toward the drive wire 4a, the relay plate 10 is moved in the same direction via the drive claw 12, that is, in the opening direction of the throttle valve 2. It can be rotated.

An autocruise negative pressure actuator 15 is provided to operate the control board 11. This actuator 1
5 is a fixed housing 16 and this housing 1
6 into an upper negative pressure chamber 17 and a lower atmospheric chamber 18, and a return spring 20 which urges the diaphragm 19 toward the atmospheric chamber 18 in the negative pressure chamber 17. . The starting end of an actuating wire 13 as an actuating part of the actuator 15 is connected to the diaphragm 19, and its terminal end is connected to the control plate 11, and by pulling the actuating wire 13, the control plate 11 is opened to open the throttle valve 2. It is designed to be able to rotate in any direction. Further, a return spring 14 is connected to the control plate 11 for biasing the control plate 11 in the closing direction of the throttle valve 2.

In the above, if the connection points of the drive and driven wires 4a, 4b to the relay plate 10 and the connection point of the actuation wire 13 to the control board 11 are appropriately selected and the arm ratio of these connection points is changed, the drive wire 4a, Or, the pulling operation of the actuating wire 13 is performed by the driven wire 4b.
The speed is reduced or increased and transmitted to the throttle valve 2.
The actuator 15 can be provided with a desired opening characteristic, and the diameter of the actuator 15 can be reduced to reduce the installation space.

The limit of movement of the diaphragm 19 toward the atmospheric chamber 18 side,
That is, in order to regulate the lower limit, the diaphragm 19
A stopper plate 21 that can support the lower surface of the atmospheric chamber 18
will be placed in The stopper plate 21 is connected to the housing 16
can be replaced by the lower wall of

The negative pressure chamber 17 is connected to a negative pressure source 22 (for example, the intake manifold of the engine E) via a negative pressure passage 23, and a check valve is connected to the negative pressure passage 23 from the upstream side (the negative pressure source 22 side). 24 and a control valve 25 are installed in series, and an accumulator 26 is connected between the check valve 24 and the control valve 25. The control valve 25 includes a vacuum valve 27, a vent valve 28, and a relief valve 29, all of which are electromagnetic, and are controlled by an auto-cruise control circuit 30. When the vacuum valve 27 receives an acceleration signal from the control circuit 30, it opens and introduces the negative pressure of the negative pressure source 22 into the negative pressure chamber 17 of the actuator 15, and the vent valve 28 receives a deceleration signal from the control circuit 30. The relief valve 29 opens when it is necessary to cancel autocruise, for example when the brakes of the vehicle are applied.
The valve opens in response to an auto-cruise release signal issued from the control circuit 30 when the clutch is operated, and like the vent valve 28, atmospheric air is introduced into the negative pressure chamber 17.

Next, the operation of this embodiment will be explained. Now, when the auto cruise control circuit 30 is activated and the cruising speed is set to, for example, 80 km/h, if the vehicle speed is less than the set value of 80 km/h, the control circuit 30 sends an acceleration signal to the vacuum valve 27 to Since the valve of the actuator 15 is opened, the negative pressure of the negative pressure source 22 causes the actuator 15 to open.
is introduced into the negative pressure chamber 17 of the diaphragm 19 to apply a suction force to the diaphragm 19, which causes the diaphragm 19 to move upward to pull the actuating wire 13 against the force of the return spring 20. Then, since the control plate 11 is rotated toward the drive wire 4a, the relay plate 10 is also rotated at the same time via the drive claw 12, and the driven wire 4b is pulled accordingly, and the throttle drum 3 is closed. It rotates against the force of the spring 6 to increase the opening degree of the throttle valve 2. Thus the power of engine E is increased,
The vehicle speed increases.

When the vehicle speed reaches the set value of 80 km/h, the control circuit 30 stops the acceleration signal and closes the vacuum valve 27, so that the negative pressure in the negative pressure chamber 17 is kept constant, and the diaphragm 19 due to this negative pressure The upper force, the force of the return spring 20 of the diaphragm 19, and the sum of the force of the return spring 14 of the control plate 11 are balanced, and the movement of the diaphragm 19 is stopped, and as a result, the throttle valve 2 is opened at the current opening degree. is maintained.

The vehicle speed is set to 8 due to a decrease in engine load, etc.
When the speed exceeds Km/h, the control circuit 30 sends a deceleration signal to the vent valve 28 to open it, so that the atmosphere is introduced into the negative pressure chamber 17 from the atmosphere opening 31, and the negative pressure chamber 17 to reduce negative pressure. When the negative pressure in the negative pressure chamber 17 decreases, the diaphragm 19 moves downward by the force of the return spring 20, so that the control plate 11 and the throttle drum 3 rotate in the opposite direction to the previous direction to open the throttle valve 2. decrease the opening degree. In this way, the output of engine E decreases, and the vehicle speed decreases.

By repeating these actions, the vehicle speed is automatically adjusted to the set speed.

During such automatic cruising, if the driver operates the throttle grip 7 to rotate the grip drum 8 in the direction of arrow a in FIG. 1 in order to accelerate the vehicle, the valve opening wire 4 will be pulled as described above. This increases the opening degree of the throttle valve 2, increases the output of the engine E, and increases the vehicle speed above the set value. In this case, the relay plate 10 rotates toward the grip drum 8 as the valve opening wire 4 is pulled, but since the vehicle speed exceeds the set value, the control circuit 3
0 sends a deceleration signal to the vent valve 28 to deactivate the actuator 15, so that the control plate 11 pulls the actuation wire 13 under the tension of the return spring 14.
The diaphragm 19 is held at the lower limit. Therefore, blind movement of the control board 11 is prevented, and vibration noise of the control board 11 and disconnection of the connection portion of the operating wire 13 do not occur.

When the control circuit 30 is deactivated, the vacuum valve 27 is closed, while the vent valve 28 is closed.
and the relief valve 29 are both opened and the negative pressure chamber 1 is opened.
7 is brought to atmospheric pressure, the diaphragm 19 is held at its lower limit by the force of the return spring 20, and accordingly, the control plate 11 moves its drive claw 12 toward the relay plate 1.
It is rotated backwards by the force of the return spring 14 to a position where it is separated from the side edge of 0. Therefore, in such a state, the grip drum 8 is rotated in one direction or the other direction by the throttle grip 7 to open the valve opening wire 4.
Alternatively, the throttle valve 2 can be opened and closed by pulling the valve-closing wire 5, and in this case, the relay plate 10 rotates without being interfered with by the control plate 11 as the valve-opening wire 4 is pulled and relaxed. control board 1.
1 and the actuator 15 do not interfere with the opening/closing operation of the throttle valve 2 in any way.

Incidentally, each of the wires 4, 5, and 13 can be replaced with a link, and the present invention can be applied to an engine equipped with multiple carburetors and an automobile. Further, it is convenient for assembly and maintenance if the relay plate 10 and the control plate 11 are housed in one box and supported by the vehicle body or engine.

If the force of the return spring 14 of the control plate 11 is set appropriately strong, the return spring 20 of the diaphragm 19 can be omitted, and this is shown in FIG. 3 as a second embodiment.

As described above, according to the present invention, between the throttle valve of the engine and the throttle operator that can be operated in two directions, the throttle valve is forcibly opened in response to the operating force of the operator in one direction. A valve-opening interlocking mechanism for causing the throttle valve to open and a valve-closing interlocking mechanism for forcibly closing the throttle valve in response to an operating force in the other direction of the operator are interposed in parallel with each other, A relay plate is interposed therebetween, and a control plate which is movable in the same manner as the relay plate is disposed adjacent to the relay plate, and this control plate has a control plate that throttles the relay plate when the control plate moves in one direction. A drive unit that moves the valve in the opening direction is provided, and an operating member of an auto cruise actuator that can automatically rotate the control plate is connected to a return spring that biases the control plate in the other direction. Therefore, even during autocruise, if you operate the throttle operator to accelerate, the relay plate will be separated from the drive part of the control plate, the throttle valve opening will be freely increased, and the vehicle speed will be increased above the set value. Moreover, even during such acceleration, the blind movement of the control board is suppressed by the force of the return spring, so there is no play in the connection with the actuator, and problems such as the control board generating vibration noise are prevented. Avoided.

Furthermore, even during the above-mentioned autocruise, simply operating the throttle operator forcefully in the other direction against the operating force of the actuator will ensure that the throttle valve closes via the valve-closing interlocking mechanism. This allows the vehicle to be quickly decelerated at any time even during autocruise.

[Brief explanation of drawings]

FIG. 1 is a longitudinal overall view of essential parts of a first embodiment of the present invention, FIG. 2 is a view taken along the arrow in FIG. 1, and FIG. 3 is a partial view of a second embodiment of the present invention. E... Engine, 2... Throttle valve, 4... Valve opening wire as an interlocking mechanism for valve opening, 5... Valve closing wire as an interlocking mechanism for valve closing, 10... Relay plate, 11... Control board, 1
2... Drive claw as a drive part, 13... Actuation wire as an actuating member of the actuator, 14... Return spring, 15
...actuator for auto cruise.

Claims (1)

[Claims] 1 A valve-opening device which forcibly opens the throttle valve 2 by receiving an operating force in one direction a of the operator 7 between the throttle valve 2 of the engine E and the throttle operator 7 which can be operated in two directions. The other direction b of the interlocking mechanism 4 and the operator 7
A valve-closing interlocking mechanism 5 for forcibly closing the throttle valve 2 in response to an operating force is interposed in parallel with each other, and a relay plate 10 is interposed in the middle of the valve-opening interlocking mechanism 4. A movable control board similar to the relay board 10 is disposed adjacent to the relay board 10, and this control board 11 includes:
A drive unit 12 that moves the relay plate 10 in the opening direction of the throttle valve 2 when the control plate 11 moves in one direction.
and an actuating member 13 of an autocruise actuator 15 that can automatically rotate the control plate 11;
An auto-cruise device for a vehicle, characterized in that a return spring 14 is connected to urge the control plate 11 in the other direction.