JPH11348597A - Accelerator pedal device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain sense of incongruity felt by a driver, prevent reduction of freedom in installing, and restrain installing space. SOLUTION: An accelerator pedal device 1 for a vehicle is provided with an accelerator pedal 2, a link mechanism 3, an accelerator opening sensor 4, a return spring 5, and a wire cable 6. The link mechanism 3 is provided with a lever member 15 and a link member 16. The lever member 15 has a first and second arm portions 17, 18, and is rotatable around a second shaft 14. One end 17a of the first arm portion 17 is connected with the accelerator pedal 2. The second arm portion 18 is connected with the accelerator opening sensor 4 via the link member 16. The wire cable 6 is provided with an outer lanyard 21 and an inner lanyard 22, and both ends 22b of the inner lanyard 22 are connected with the other end 18b of the second arm portion 18 in the condition that the both ends 22b are facing each other. The wire cable 6 is loop shaped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an accelerator pedal device used for a vehicle such as an automobile.

[0002]

2. Description of the Related Art Conventionally, in an accelerator pedal device of a vehicle equipped with a diesel engine having a mechanical governor or a gasoline engine having a mechanical throttle valve,
The accelerator pedal is connected to the control lever of the mechanical governor and the mechanical throttle valve via a cable. The cable, an outer cable, and an inner cable that slides in the outer cable by depressing the accelerator pedal;
It has. A spring for urging the accelerator pedal to an initial position via the cable is locked to a control lever of the mechanical governor and the mechanical throttle valve.

An accelerator pedal device for such a vehicle is
It has a so-called hysteresis characteristic in which a difference occurs in the pedaling force between when the accelerator pedal is depressed and when the accelerator pedal is reset due to the sliding resistance generated by the cable.

However, in recent years, vehicles equipped with an electronically controlled diesel engine with a governor and an electronically controlled gasoline engine with a throttle valve have been increasingly used for the purpose of improving fuel efficiency and purifying exhaust gas. In such an accelerator pedal device for a vehicle, the hysteresis width described above is narrow because the accelerator pedal only needs to be connected to the accelerator opening sensor that detects the amount of depression of the pedal. For this reason, there has been a tendency for a driver who has operated the accelerator pedal device of the conventional vehicle to feel uncomfortable.

An accelerator pedal device disclosed in Japanese Utility Model Publication No. 5-3381 is known as an accelerator pedal device which has solved the above-mentioned uncomfortable feeling given to a driver. 5-3
No. 381 discloses an accelerator pedal device, an accelerator pedal, a link mechanism connected to the accelerator pedal, an accelerator sensor for detecting a pedal depression amount of the accelerator pedal, a wire cable for securing a hysteresis width, and a return. And a spring.

[0006] The wire cable has one end connected to the link mechanism and the other end connected to the return spring. The wire cable is bent in a U-shape between the link mechanism and the return spring.

[0007] The return spring is attached to a member on the vehicle body side, and biases the accelerator pedal to an initial position via the wire cable and the link mechanism.

[0008] With such a configuration, the actual
The accelerator pedal device disclosed in Japanese Patent No. 3381 discloses the use of the sliding resistance of the wire cable to secure the difference in the pedaling force between when the accelerator pedal is depressed and when the accelerator pedal is restored, that is, the above-described hysteresis width, and provides the driver with it. It is designed to reduce discomfort.

[0009]

However, in the accelerator pedal device disclosed in Japanese Utility Model Publication No. Hei 5-3381, the wire cable and the return spring are connected to each other, so that the return spring functions properly. Therefore, there is a problem that the degree of freedom in installation is low. Further, there is a problem that the installation space is enlarged because the wire cable is bent and arranged in a U-shape.

Accordingly, an object of the present invention is to provide an accelerator pedal device used in a vehicle having an electronically controlled engine in which there is no connection between the accelerator pedal and the engine by a cable, which can reduce the discomfort given to the driver and install the accelerator pedal device. It is an object of the present invention to provide an accelerator pedal device for a vehicle that does not reduce the degree of freedom at the time of installation and can reduce the installation space.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and achieve the object, an accelerator pedal device for a vehicle according to the present invention is provided.
The wire cable includes an inner cable and an outer cable, and both ends of the inner cable are opposed to each other and connected to the accelerator pedal side. Further, the wire cable is arranged so as to be bent in a loop shape so that the inner cables face each other.

The accelerator pedal device uses the sliding resistance of the wire cable to secure a difference in the pedaling force between when the accelerator pedal is depressed and when the accelerator pedal is restored, that is, the above-described hysteresis width. Therefore, a feeling of strangeness given to the driver can be suppressed.

Further, since both ends of the inner cable of the wire cable are connected to the accelerator pedal side, the return spring and the wire cable can be provided on the vehicle body side member independently of each other.

Further, since the wire cable is arranged in a loop shape so that both ends of the inner cable face each other, the installation space is smaller than that of the wire cable which is bent in a U-shape. Can be suppressed.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. An accelerator pedal device 1 for a vehicle includes an accelerator pedal 2 as shown in FIG.
A link mechanism 3 connected to the accelerator pedal 2;
An accelerator opening sensor 4 for detecting a pedal depression amount as an operation amount of the accelerator pedal 2, a return spring 5, and a wire cable 6 are provided.

The accelerator pedal 2 has a first shaft 1 at the lower end.
1 is attached to a member 12 on the vehicle body side such as a floor of a passenger compartment so as to be rotatable around the center 1. The accelerator opening sensor 4
Has an arm 13 connected to the accelerator pedal 2 via the link mechanism 3. The accelerator opening sensor 4 detects the rotation angle of the arm 13.

The link mechanism 3 includes a lever member 15 provided rotatably about a second shaft 14 and the like, and a link member 16. The lever member 15 is
Arm 17 and a second arm 18.
The first arm 17 has one end 17a in contact with the accelerator pedal 2 and the other end 17b fixed to the second shaft 14, so that the first arm 17 is rotatable with the second shaft 14. Has become.

The second arm 18 has one end 18a.
Is fixed to the second shaft 14 so as to be rotatable together with the second shaft 14 and the first arm portion 17, and the link member 16 is rotatably attached to the other end portion 18b. ing. The second shaft 14 is rotatably attached to a member (not shown) on the vehicle body side or the like.

The link member 16 has one end 16a rotatably mounted on the second arm 18 and the other end 16b rotatably mounted on the arm 13 of the accelerator opening sensor 4. Installed.

The accelerator opening sensor 4 includes a sensor main body 19, a sensor shaft 20 rotatably provided on the sensor main body 19, and the aforementioned arm 13 having a base end portion fixed to the sensor shaft 20. have. The sensor body 19 is
It is designed to be attached to a member on the vehicle body side.

The accelerator opening sensor 4 is provided with an EC (not shown).
It is connected to U (Engine Control Unit). The accelerator opening sensor 4 is driven by the rotation of the arm 13.
By the rotation of the sensor shaft 20, a depression amount as an operation amount of the accelerator pedal 2 transmitted through the link mechanism 3 or the like is detected and output to the ECU or the like.

The return spring 5 is composed of a coil spring or the like, and is provided in a state where both ends of the return arm 5 are hung on the second arm portion 18 of the lever member 15 and the member 12 on the vehicle body side. Return spring 5
The second arm 18 of the lever member 15 is moved so that the accelerator pedal 2 is at an initial position indicated by a solid line in the drawing.
Is urged toward the vehicle body side member 12 such as the floor of the passenger compartment.

The wire cable 6 includes a tubular outer cable 21 and an inner cable 22 slidable in the outer cable 21 with friction. Wire cable 6
Are arranged such that both ends 22a and 22b of the inner cable 22 are bent in a loop shape so as to face each other, and both ends 22a and 22b of the inner cable 22 are connected to the lever member 1.
5 is connected to the other end portion 18b of the second arm portion 18.

The wire cable 6 has both ends 21a and 21b of the outer cable 21 supported by the flange member 24 attached to the member 23 on the vehicle body side in the above-described loop shape. I have.

The length of the wire cable 6 and the outer cable 21
It is preferable that the coefficient of friction between the inner cable 22 and the inner cable 22 be a value corresponding to a cable used in a conventional accelerator pedal device of a vehicle in which an accelerator pedal is connected to an engine side by a cable.

According to the above-described structure, when the driver or the like steps on the accelerator pedal 2 to the position indicated by the two-dot chain line P1 in FIG. 1, the first and second arm portions 1 of the lever member 15 are moved.
7 and 18 are integrally rotated about the second shaft 14 along the arrows K1 and K2 in the figure and are shown by a two-dot chain line P in the figure.
It is displaced to the position indicated by 2, P3.

At this time, the inner cable 2 of the wire cable 6
2 are displaced together with the second arm 18 so that the inner cable 22 slides inside the outer cable 21 with friction along the arrow K3 in the figure.

When the second arm 18 rotates, the link member 16 is displaced upward, and the arm 13 of the accelerator opening sensor 4 rotates together with the sensor shaft 20. An accelerator opening sensor 4 detects the depression amount of the accelerator pedal 2 based on the rotation of the sensor shaft 20, that is, the operation amount of the accelerator pedal 2, and outputs it to the ECU.

Next, when the accelerator pedal 2 is depressed and the driver returns his / her foot, the accelerator pedal 2 attempts to return to the initial position indicated by the solid line in FIG. 1 due to the elastic restoring force of the return spring 5. I do. At this time, the return speed of the accelerator pedal 2 is reduced due to the sliding resistance between the inner cable 22 and the outer cable 21 of the wire cable 6.

For this reason, as shown by the solid line in FIG. 2, as compared with the accelerator pedal device without a wire cable shown by the dotted line in FIG. The difference between the pedaling force and the pedaling force increases.

Therefore, it is possible to secure a hysteresis width H substantially equal to that of an accelerator pedal device used in a vehicle in which the accelerator pedal is connected to the engine by a cable, and to provide a driver who is used to driving a conventional vehicle. Discomfort can be suppressed.

Further, the inner cable 22 of the wire cable 6
Are connected to the second arm portion 18 of the lever member 15 on the side of the accelerator pedal 2,
The return spring 5 and the wire cable 6 can be attached to members on the vehicle body independently of each other. Therefore, the degree of freedom at the time of installation does not decrease.

The wire cable 6 is connected to the inner cable 22.
Are connected to the second arm 18 in a state where the both ends 22a and 22b are opposed to each other and bent in a loop shape, so that the wire cable is bent in a U-shape and arranged. Installation space can be reduced.

[0034]

According to the present invention, the accelerator pedal device uses the sliding resistance of the wire cable to secure the difference in the pedaling force between when the accelerator pedal is depressed and when the accelerator pedal is restored, that is, the above-described hysteresis width. It is.
Therefore, a feeling of strangeness given to the driver can be suppressed.

In particular, since both ends of the inner cable of the wire cable are connected to the accelerator pedal side, the return spring and the wire cable can be provided on the body side member independently of each other. Therefore, the degree of freedom in installation is not reduced.

Further, since the wire cable is arranged in a loop shape so that both ends of the inner cable face each other, the installation space is smaller than that in the U-shaped one. Can be suppressed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an accelerator pedal device for a vehicle according to an embodiment of the present invention.

FIG. 2 is a characteristic diagram showing a change in pedaling force with respect to an amount of depression of an accelerator pedal device for a vehicle shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Accelerator device for vehicles 2 ... Accelerator pedal 4 ... Accelerator opening sensor 5 ... Return spring 6 ... Wire cable 21 ... Outer cable 22 ... Inner cable 22a, 22b ... Both ends of inner cable

Claims (1)

[Claims] An accelerator pedal operated by a driver; an accelerator opening sensor for detecting an operation amount of the accelerator pedal; a return spring for urging the accelerator pedal to return to an initial position; Both ends of the inner cable slidably provided in the cable are arranged in a loop shape so as to face each other, and both ends of the inner cable are integrally formed in conjunction with operation of an accelerator pedal. An accelerator pedal device for a vehicle, comprising: a wire cable in which both ends of the inner cable are connected to the accelerator pedal side so that the inner cable is displaced and slides in the outer cable.