JPH06108882A - Throttle actuator - Google Patents

Abstract

PURPOSE:To provide a throttle actuator to change the position of an accelerator pedal according to the change of a rotation angle during drive of a throttle valve with the aid of a motor. CONSTITUTION:A pedal spring 20 through the force of which a force or torque in a pedaling direction is exerted on an accelerator pedal 9 is installed, and a tension is always exerted on an accelerator wire 8. The accelerator pedal 9 and an accelerator lever 7 can be intercoupled through a push pull member to transmit movement of both opening and closing of a throttle valve 4. Since this constitution causes the change of the position of the accelerator pedal according to the change of the opening of the throttle valve, even when a driver steps on the accelerator pedal through which a speed exceeds a set value, there is no fear of racing pedaling occurring and the opening of an accelerator valve is immediately changed, whereby excellent operability and responsiveness are provided. Further, since no slack is left on the accelerator wire, there is no fear of dislocation occurring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a throttle actuator for driving a throttle valve of an engine, and more particularly to a throttle actuator suitable for arbitrarily setting the opening of the throttle valve for controlling the traveling speed of a vehicle. Regarding

[0002]

2. Description of the Related Art A throttle valve for controlling the amount of air taken into an engine is driven by a motor or the like to arbitrarily set the opening of the throttle valve so that the traveling speed of a vehicle reaches a value desired by a driver. As an electronically controlled throttle actuator that is controlled in this manner, for example, Mitsubishi Motors Corporation "ETERNA New Model Manual (1988 1
As described in "(October)", a valve return spring that applies a closing force to the throttle valve,
A drive device that changes the opening of the throttle valve according to a control signal, and a pedal return spring that applies a force to the accelerator pedal in a direction opposite to the pedaling force of the driver,
A throttle actuator composed of an accelerator pedal and an accelerator wire that connects a throttle valve is well known.

[0003]

SUMMARY OF THE INVENTION In the above prior art,
If the driver releases his / her foot from the accelerator pedal while controlling the traveling speed, the pedal return spring exerts a force to return the accelerator pedal to the position where it is not depressed and the accelerator wire is pulled. Since only the force was transmitted, the accelerator wire slackened, and the accelerator pedal returned to the position where it was not depressed regardless of the opening of the throttle valve.

If the accelerator wire is slackened, the accelerator wire may be disengaged from the engagement portion with the throttle valve, and if the accelerator pedal is not depressed regardless of the opening of the throttle valve, the driver may not be depressed. When the accelerator pedal is depressed for further acceleration, the accelerator pedal is idled until the slack of the accelerator wire disappears.

An object of the present invention is to change the position of the accelerator pedal according to the change in the rotation angle of the throttle valve without causing the slack in the accelerator wire while the drive device is driving the throttle valve. It is to provide a throttle actuator.

[0006]

In order to achieve the above object, the first structure of the throttle actuator of the present invention comprises:
A throttle valve provided in an intake cylinder that supplies intake air to an engine, a valve return spring that applies a closing force to the throttle valve, and a drive unit that opens and closes the throttle valve according to an electrical signal. And an arbitrarily operated accelerator pedal, a pedal spring for urging a force in the depression direction on the accelerator pedal, and an accelerator wire connecting the accelerator pedal and the throttle valve. Is. In the second configuration, the throttle valve provided in the intake cylinder that supplies intake air to the engine, the valve return spring that urges a force in the closing direction to the throttle valve, and the throttle valve electrically Drive means for opening and closing in response to a signal, an accelerator pedal that is arbitrarily operated, and a push-pull member that transmits movements in both the closing direction and the opening direction of the throttle valve between the accelerator pedal and the throttle valve. It is characterized by being configured. The push-pull member includes a first accelerator wire that transmits a movement in the closing direction of the throttle valve and a second accelerator wire that transmits a movement in the opening direction of the throttle valve between the accelerator pedal and the throttle valve. It can be constituted by a wire.
Further, it may be configured by a rod connecting the accelerator pedal and the throttle valve. Also,
A push-pull cable composed of a wire connecting the accelerator pedal and the throttle valve and a tube covering the outer circumference of the wire may be used.

[0007]

According to the above structure, when the driver releases his / her foot from the accelerator pedal during the traveling speed control, a force for moving the accelerator pedal in the stepping direction by the pedal spring acts on the accelerator pedal. The accelerator wire receives pulling force and loses its slack, and at the same time, the position of the accelerator pedal changes according to the opening degree of the throttle valve. When the driver releases his / her foot from the accelerator pedal when no control is performed, the force that opens the throttle valve that is generated by the pedal spring is the force that closes the throttle valve that is generated by the valve return spring. The throttle valve can be prevented from opening by the force generated by the pedal spring. Furthermore, in recent years, in order to improve reliability, dual valve return springs are being prepared in case the valve return spring is damaged. With regard to the duplicated valve return spring, even if one of the two valve return springs is damaged, the force generated by the pedal spring in the direction to open the throttle valve is the remaining one valve that is not damaged. The throttle valve can be surely closed by setting the return spring to be smaller than the force in the closing direction of the throttle valve.

Further, when the push-pull member is used, when the drive unit is driving the throttle valve, both the opening and closing movements of the driven throttle valve are transmitted to the accelerator pedal. The position of the pedal can be changed according to the opening of the throttle valve. If the drive is not controlling,
When the driver releases his / her foot from the accelerator pedal, the valve return spring may return both the throttle valve and the accelerator pedal, which may cause the throttle valve to fully close at a slower speed. Is
By providing the pedal return spring for urging the force to return the accelerator pedal, the throttle valve can be fully closed at a sufficiently high speed. Further, since the push-pull member can transmit the force that the accelerator pedal receives from the pedal return spring to return the accelerator pedal to the throttle valve, if the generated force of the pedal return spring is sufficiently large, the valve return spring is abolished. Even so, it is possible to return the throttle valve to fully closed at a sufficient speed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described below with reference to the drawings. First, the configuration of the entire system will be described with reference to FIG. The air taken in from the air cleaner 1 is supplied to the engine 3 through the intake cylinder 2. A throttle valve 4 that controls the amount of intake air supplied to the engine 3 is arranged in the intake cylinder 2.

A throttle shaft 5 is rotatably supported in the intake cylinder 2, and a throttle valve 4 is mounted so as to rotate integrally with the throttle shaft 5. When the throttle shaft 5 rotates and the throttle valve 4 opens, the amount of air supplied to the engine 3 increases, and conversely, when the throttle shaft 5 rotates in the opposite direction and the throttle valve 4 closes, the air is supplied to the engine 3. Air volume decreases.

One end of the throttle shaft 5 is connected to the accelerator lever 7. Further, the accelerator lever 7 is connected to an accelerator pedal 9 via an accelerator wire 8. When the accelerator pedal 9 is depressed, the accelerator lever 7 and the throttle shaft 5 are connected via the accelerator wire 8.
Rotates and the throttle valve 4 opens.

On the other hand, the other end of the throttle shaft 5 is connected through a clutch 12 to a motor 13 which is an example of an actuator. The rotation of the motor 13 is controlled by a signal from the control unit 10. Motor 13
The rotation of is transmitted to the throttle shaft 5 only when the clutch 12 is in the connected state by the signal from the control unit 10. The traveling speed of the vehicle is detected by the traveling speed sensor 11, for example, from the rotational speed of the driven wheels, and the output signal of the traveling speed sensor 11 is input to the control unit 10. During traveling speed control, the control unit 10 opens the throttle valve 4 by controlling the rotation of the motor 13 so that the traveling speed of the vehicle matches the traveling speed set by the driver after the clutch 12 is engaged. Adjust. Clutch 1
Reference numeral 2 disconnects the motor 13 from the throttle shaft 5 when the motor 13 fails or when control is unnecessary. Further, the clutch 12 has a built-in overrunning clutch (not shown), and when the driver further depresses the accelerator pedal 9 during the throttle valve opening control by the motor 13, the motor 13 is not dragged. The throttle valve 4 can be opened according to the amount of depression of the accelerator pedal 9.

Next, the details of the first embodiment of the throttle actuator of the present invention will be described with reference to FIG. A throttle valve 4 is integrally attached to a throttle shaft 5 which is rotatably supported by the intake cylinder 2, and a flow formed between the throttle valve 4 and the intake cylinder 2 as the throttle shaft 5 rotates. The passage area is changed to adjust the intake air flow rate.

One end of the valve return spring 15 is engaged with the throttle shaft 5, and the other end of the valve return spring 15 is engaged with a spring pin 16 planted in the intake cylinder 2. Valve return spring 15
Applies a torque for closing the throttle valve 4 to the throttle shaft 5.

A motor 13, which is an example of an actuator, is arranged at one end of the throttle shaft 5 via an electromagnetic clutch 12 and a speed reducer 14. The electromagnetic clutch 12 is
Rotor 1 that rotates together with throttle shaft 5
21 and an armature 122 that rotates integrally with the speed reducer 14. When the coil (not shown) of the electromagnetic clutch 12 is energized, the armature 122 is connected to the rotor 121 by the electromagnetic force generated by the coil, the rotation of the motor 13 is transmitted to the throttle shaft 5, and the rotation of the motor 13 causes the throttle valve 4 to move. The opening degree can be controlled.

An accelerator lever 7 is attached to the other end of the throttle shaft 5. An accelerator wire 8 is attached to the accelerator lever 7 by an engagement pin 17. When the driver depresses the accelerator pedal 9, the depressing force is transmitted to the accelerator lever 7 as the tension of the accelerator wire 8 and the valve return spring 1
The return force of 5 is overcome and the throttle valve 4 opens.

The accelerator pedal 9 is rotatably supported by a bracket 18 fixed to the vehicle around a rotation pin 19, and the accelerator pedal 9 is provided between the accelerator pedal 9 and the bracket 18 with respect to the accelerator pedal 9. A pedal spring 20 for urging a torque in the stepping direction is installed.

Here, when the driver releases his / her foot from the accelerator pedal when the motor control is not being performed, the accelerator wire 8 is generated by the force generated by the pedal spring 20.
The torque generated by the pedal spring 20 is set to be smaller than the torque generated by the valve return spring 15 in the closing direction of the throttle valve 4 so that the throttle valve 4 will not be opened by pulling.

In order to improve reliability, if the valve return spring is duplicated, for example, the valve return spring 15 may be provided on the outside or inside of the valve return spring 15.
Often a second valve return spring is arranged. Even at this time, if each of the springs is set so that the torque generated by the pedal spring 20 can be overcome by the torque of only one of the two springs and the throttle valve 4 can be returned to the fully closed state, by any chance. Even if one of the two valve return springs is damaged, the throttle valve 4 can be surely fully closed. In addition, the basic function of the throttle actuator is not different from that of the case where there is only one valve return spring, and henceforth, the description will focus on the structure having one valve return spring shown in FIG. I will go.

FIG. 1 shows a state in which the throttle valve 4 is opened by the motor 13 and the driver releases his / her foot from the accelerator pedal 9 while the traveling speed is controlled by the motor 13. There is. At this time, since the force in the direction of stretching the accelerator wire 8 generated by the pedal spring 20 acts on the accelerator wire 8,
The accelerator wire 8 does not sag even if the opening of the throttle valve 4 changes. Also, the accelerator pedal 9
Since the torque that tries to move the accelerator pedal 9 in the stepping direction by the pedal spring 20 and the torque that tries to move the accelerator pedal 9 in the direction opposite to the stepping direction due to the tension of the accelerator wire 8 are always acting, The position of the pedal 9 can be changed according to the change of the opening degree of the throttle valve 4.

In order to make it easier to understand the difference from the conventional throttle actuator, description will be given with reference to FIG. 3, which is a structural diagram of the conventional throttle actuator. The conventional throttle actuator shown in FIG. 3 differs from the throttle actuator of the present invention shown in FIG. 1 only in the pedal spring. In the throttle actuator of FIG. 3, instead of the pedal spring 20 that biases the accelerator pedal 9 with a force in the stepping direction in the throttle actuator of FIG. 1, a pedal that biases the accelerator pedal 9 with a force in the opposite direction to the pedaling is applied. A return spring 21 is provided.

3, the throttle valve 4 is opened by the motor 13 while the traveling speed is controlled by the motor 13, and the driver operates the accelerator pedal 9 as shown in FIG. It shows a state in which the user's feet are separated from.

In the conventional throttle actuator, the accelerator wire 8 does not transmit the force pushing the accelerator pedal 9 in the stepping direction, and the pedal return spring 21
Also generates a force in the direction of pushing the accelerator wire 8, so that the accelerator wire 8 will sag as the throttle valve 4 opens. At this time, the accelerator pedal 9 is only urged by the pedal return spring 21 to exert a torque to return the accelerator pedal 9 to the position where the pedal is not depressed. It cannot move in response to changes in the opening of the valve 4.

If the accelerator wire 8 sags, the engagement pin 17 of the accelerator wire 8 may come off the accelerator lever 7 and it may become impossible to adjust the opening of the throttle valve 4 by the accelerator pedal 9. Further, when the driver depresses the accelerator pedal 9 in order to further accelerate from the set traveling speed, in the conventional throttle actuator shown in FIG. 3, the driver operates the accelerator pedal 9 until the slack of the accelerator wire 8 disappears. Although the vehicle will be idling, the throttle actuator of the present invention shown in FIG. 1 has excellent operability and responsiveness because the opening degree of the accelerator valve 4 changes immediately when the accelerator pedal 9 is depressed. .

Next, the details of the second embodiment of the throttle actuator of the present invention will be described with reference to FIG. 4 and FIG. 1 have the same configuration of the intake cylinder 2, the throttle valve 4, the throttle shaft 5, the valve return spring 15, the motor 13, and the like. In this embodiment, an accelerator lever 7 is attached to the other end of the throttle shaft 5, and the engagement pin 1 is attached to the accelerator lever 7.
Although the accelerator wire 8 is hung by 7 in FIG.
As shown in FIG. 3, the accelerator wire 8 applies to the accelerator lever 7 and the accelerator pedal 9 the driver's stepping force on the accelerator pedal 9, the urging force of the valve return spring 15 and the driving force for closing the throttle valve 4 by the motor 13, respectively. The accelerator wire 81 transmitted via the coupling pin 171 and the driving force for opening the throttle valve 4 by the motor 13 are engaged with the accelerator pedal 9 by the engagement pin 172.
And an accelerator wire 82 which is transmitted via

When the driver depresses the accelerator pedal 9, the depressing force is transmitted to the accelerator lever 7 as the tension of the accelerator wire 81 and overcomes the returning force of the valve return spring 15 to open the throttle valve 4. When the driver releases his / her foot from the accelerator pedal 9, the return force of the valve return spring 15 is reduced by the accelerator wire 81.
Is transmitted to the accelerator pedal 9, and the throttle valve 4 is fully closed, and the accelerator pedal 9 returns to a position where it is not depressed.

The accelerator pedal 9 is rotatably supported by a bracket 18 fixed to the vehicle around a rotary pin 19, and between the accelerator pedal 9 and the bracket 18, the accelerator pedal 9 is attached to the accelerator pedal 9. A pedal return spring 21 is installed which urges a torque that returns the pedal in a non-depressed direction. Here, when the driver releases his / her foot from the accelerator pedal 9, the pedal return spring 21 also bears the force to return the accelerator pedal 9 via the accelerator wire 81 by the valve return spring 15 so that the throttle valve 4 can operate. In order to avoid an increase in the time required to fully close the valve, the return force is shared by the valve return spring 15 and the pedal return spring 21 to shorten the time until the throttle valve 4 is fully closed. It was installed in. Therefore, when the generated force of the valve return spring 15 is sufficiently large, it is not always necessary to provide the pedal return spring 21.

Further, conversely, since the returning force of the accelerator pedal 9 received by the accelerator pedal 9 from the pedal return spring 21 can be transmitted to the accelerator lever 7 through the accelerator wire 82, the generated force of the pedal return spring 21 can be transmitted. Is large enough,
Even if the valve return spring 15 is eliminated, the throttle valve can be returned to the fully closed state at a sufficient speed.

Next, the state where the driver releases his / her foot from the accelerator pedal 9 while the traveling speed is controlled by the motor 13 and the throttle valve 4 is opened by the motor 13 is shown in FIG. It demonstrates using. At this time, the force of stretching the accelerator wire 82 is applied to the accelerator wire 82 by the driving force of the motor 13,
Even if the opening of the throttle valve 4 changes, the accelerator wire 82 does not sag, and the position of the accelerator pedal 9 changes according to the change of the opening of the throttle valve 4. Further, since the accelerator lever 7 and the accelerator pedal 9 move in synchronization with each other, the accelerator wire 81 that does not receive the tension does not sag.

Considering the case where the opening degree of the throttle valve 4 is adjusted by the accelerator pedal 9 without performing control by the motor 13, this time, the returning force of the valve return spring 15 to the accelerator wire 81 and the accelerator pedal of the driver. The force that stretches the accelerator wire 81 acts on the depression force of the accelerator pedal 9, and the opening degree of the throttle valve 4 changes according to the depression amount of the accelerator pedal 9. Further, since the accelerator lever 7 and the accelerator pedal 9 move in synchronization with each other, the accelerator wire 82 that does not receive the tension does not sag.

Next, the details of the third embodiment of the throttle actuator of the present invention will be described with reference to FIG. In this embodiment, the accelerator pedal 9 and the accelerator lever 7 are connected by the rod 24 via the pin coupling portions 22 and 23, so that the throttle valve 4 can be moved both in the closing direction and in the opening direction. Transmitted between 7. Also, depending on the arrangement, the accelerator pedal 9
There is a case in which the rod and the accelerator lever 7 cannot be connected by a single rod. In that case, a link is formed by a plurality of rods and the accelerator pedal 9 and the accelerator lever 7 are connected to each other, so that the gist of the present invention is Can be implemented without any loss. The provision of the pedal return spring 21 and the elimination of the valve return spring 15 at that time are the same as described in the description of the second embodiment of FIG.

Next, the details of the fourth embodiment of the throttle actuator of the present invention will be described with reference to FIG. In this embodiment, the accelerator pedal 9 and the accelerator lever 7 are
Push-pull cable 2 via pin coupling parts 22 and 23
The movement of the throttle valve 4 in the closing direction and the movement in the opening direction are transmitted between the accelerator pedal 9 and the throttle lever 7 by being connected by 5.

The push-pull cable 25 is roughly divided into a wire 251 for transmitting a force and a tube 252 covering the outer circumference of the wire 251, and a pin for the accelerator lever 7 and the accelerator pedal 9 is provided at both ends of the wire 251. Fittings 253, 254 engaged with the coupling portions 22, 23 are attached, and tube fixing fittings 255, 255 for fixing the tube 252 to an engine or a vehicle body are attached to both ends of the tube 252. ing. When the wire 251 receives the depression force of the accelerator pedal 9, the return force of the valve return spring 15, the return force of the pedal return spring 21, the driving force of the motor 13 and the like via the accelerator pedal 9 and the accelerator lever 7, the wire 251 does not sag by the tube 252. Guided by, the force is transmitted between the accelerator pedal 9 and the accelerator lever 7 while sliding on its inner circumference. Since the wire 251 makes a stroke according to the opening degree of the throttle valve 4, the wire 251 is exposed from the tube 252 at least at a portion longer than the stroke length. In order to prevent the wire 251 from sagging in the exposed portion and not transmitting the force, the wire 251 has a larger diameter, for example, a larger diameter than the normal accelerator wire, so that the force can be transmitted. It has a structure in which a thin plate is rolled into a cylindrical shape.

Unlike the rod 24 in the embodiment shown in FIG. 5, the push-pull cable 25 can transmit a force even when it is bent with a certain curvature, so that the accelerator pedal 9 and the accelerator lever 7 can be used regardless of the arrangement of the engine or the like. You can tie with. Also in the fourth embodiment, the pedal return spring 21 is provided,
At that time, the valve return spring 15 is eliminated and the like, as described in the description of the second embodiment.

In these embodiments, the motor has been described as an example of the actuator for control, but the type of the actuator is not directly related to the essence of the present invention. For example, hydraulic type, pneumatic type, and The throttle valve opening may be controlled using any actuator such as a rotary type or a direct acting type. Further, the actuator and the throttle shaft do not need to be directly connected by a gear or the like as shown in these embodiments, and for example, the actuator and the throttle shaft may be connected by a wire for transmitting a driving force. . It goes without saying that the electromagnetic clutch used to deal with the motor failure used in these embodiments may become unnecessary depending on the type of actuator and the design concept for safety.

[0036]

According to the throttle actuator of the present invention, even when the drive device is driving the throttle valve, the position of the accelerator pedal changes in accordance with the change in the opening of the throttle valve. If you press the accelerator pedal to accelerate from the set speed,
The opening degree of the accelerator valve changes instantly without depressing, resulting in excellent operability and responsiveness.

[Brief description of drawings]

FIG. 1 is a structural diagram showing a first embodiment of a throttle actuator of the present invention.

FIG. 2 is a configuration diagram of an entire throttle actuator system.

FIG. 3 is a structural diagram of a conventional throttle actuator.

FIG. 4 is a structural diagram showing a second embodiment of the present invention.

FIG. 5 is a structural diagram showing a third embodiment of the present invention.

FIG. 6 is a structural diagram showing a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Air Cleaner 2 Air Intake Cylinder 3 Engine 4 Throttle Valve 5 Throttle Shaft 7 Accelerator Lever 8, 81, 82 Accelerator Wire 9 Accelerator Pedal 10 Control Unit 11 Travel Speed Sensor 12 Electromagnetic Clutch 121 Rotor 122 Armature 13 Motor 14 Reducer 15 Valve Return Spring 16 Spring pin 17, 171, 172 Engagement pin 18 Bracket 19 Rotation pin 20 Pedal spring 21 Pedal return spring 22, 23 Pin engagement part 24 Rod 25 Push-pull cable 251 Wire 252 Tube 253, 254 Mounting bracket 255, 256 Tube fixing bracket

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naoyuki Tanaka, 502 Jinritsucho, Tsuchiura-shi, Ibaraki Hiritsu Seisakusho Co., Ltd. Mechanical Research Laboratory (72) Inventor Teruhiko Minegishi 2477 Kashimayatsu Kashimayatsu, Katsuta-shi, Ibaraki Prefecture 3 Hitachi Automotive Engineering Co., Ltd. (72) Inventor Yasushi Sasaki 2520 Takaba, Katsuta City, Ibaraki Prefecture Hitachi Automotive Systems Division

Claims (12)

[Claims] 1. A throttle valve provided in an intake cylinder for supplying intake air to an engine, a valve return spring for urging a force in a closing direction to the throttle valve, and the throttle valve in response to an electric signal. And a driving means for opening and closing the pedal, an accelerator pedal that is operated arbitrarily, a pedal spring that biases the accelerator pedal with a force in the stepping direction, and an accelerator wire that connects the accelerator pedal and the throttle valve. Throttle actuator. 2. The throttle actuator according to claim 1, wherein the force generated by the pedal spring in the opening direction of the throttle valve is smaller than the force generated by the valve return spring in the closing direction of the throttle valve. A throttle actuator characterized in that a pedal spring and a valve return spring are set. 3. The throttle actuator according to claim 1, wherein two valve return springs are provided, and the throttle generated by the pedal spring is greater than the force generated by each valve return spring in the direction of closing the throttle valve. A throttle actuator, wherein the pedal spring and the valve return spring are set so that a force in a valve opening direction becomes small. 4. A throttle valve provided in an intake cylinder for supplying intake air to an engine, a valve return spring for urging a force in a closing direction on the throttle valve, and the throttle valve in response to an electric signal. Constituted by an accelerator wire that connects the accelerator pedal and the slot valve, a driving means that opens and closes by means of the accelerator pedal, an arbitrarily operated accelerator pedal, a pedal spring that biases the accelerator pedal with a force in the stepping direction, and an accelerator wire that connects the accelerator pedal and the slot valve.
When the drive means is driving the throttle valve, the position of the accelerator pedal changes according to the change of the rotation angle of the throttle valve without causing the slack in the accelerator wire. Actuator. 5. A throttle valve provided in an intake cylinder for supplying intake air to an engine, a valve return spring for urging a force in a closing direction to the throttle valve, and the throttle valve in response to an electric signal. And a push-pull member that transmits movements in both the closing direction and the opening direction of the throttle valve between the accelerator pedal and the throttle valve. A throttle actuator characterized in that 6. A throttle valve provided in an intake cylinder for supplying intake air to an engine, a valve return spring for urging a force in a closing direction on the throttle valve, and the throttle valve in response to an electric signal. Drive means for opening and closing, an arbitrarily operated accelerator pedal, and a push-pull member that transmits movements in both the closing direction and the opening direction of the throttle valve between the accelerator pedal and the throttle valve, A throttle actuator, wherein the position of the accelerator pedal changes in accordance with a change in the opening of the throttle valve when the drive means is driving the throttle valve. 7. The throttle actuator according to claim 5, wherein the push-pull member transmits a movement in a closing direction of the throttle valve between the accelerator pedal and the throttle valve. And a second accelerator wire for transmitting the movement in the opening direction of the throttle valve. 8. The throttle actuator according to claim 5, wherein the push-pull member is a rod that connects the accelerator pedal and the throttle valve. 9. The throttle actuator according to claim 5, wherein the push-pull member includes a wire connecting the accelerator pedal and the throttle valve, and a tube covering the outer circumference of the wire. A throttle actuator characterized by being a cable. 10. The throttle actuator according to claim 5, further comprising a pedal return spring for urging a force for returning the accelerator pedal. 11. The throttle actuator according to claim 5, further comprising a pedal return spring for urging a force for returning the accelerator pedal, and a valve return spring for urging a force in a closing direction to the throttle valve. Throttle actuator characterized by being abolished. 12. The throttle actuator according to claim 1, wherein the drive means is a drive means for controlling a traveling speed of a vehicle.