JP2000158971A - Accelerator pedal device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an accelerator pedal device capable of imparting an appropriate reaction force against a pedal pressing force, allowing compact installation compared with a dummy cable, and allowing extremely easy reaction adjustment. SOLUTION: This accelerator pedal device 1 has a support frame 2, an accelerator pedal arm 3 supported by the support frame 2 to freely turn in a direction R, a spring means 4 for turnably energizing the accelerator pedal arm 3 to an initial turning position, and a damper 5 for applying a resistance force to turning of the accelerator pedal arm 3 in the direction R. The damper 5 comprises a relative rotation body 21 and a relative rotation body 24 capable of freely rotating in the direction R relatively to the relative rotation body 21, while a gap 23 for accommodating a viscous body is formed between the relative rotation body 21 and the relative rotation body 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accelerator pedal device provided with a damper for applying an appropriate braking to an accelerator pedal arm of an automobile.

[0002]

In order to reduce fuel consumption and reduce carbon dioxide of an automobile, fine control of fuel injection of an automobile engine is required. Accordingly, the throttle valve opening is adjusted by depressing an accelerator pedal. It has been practically performed electronically.

[0003] In an automobile in which fuel injection of an engine is electronically controlled, an accelerator wire disposed between an accelerator pedal arm and a throttle valve is usually omitted. However, in an accelerator wireless automobile, compared with an automobile having an accelerator wire, Then, the reaction force with respect to the pedal depression force is different, and generally becomes smaller.

If the return spring for returning the pedal arm to the initial rotation position is increased in order to obtain a reaction force equivalent to that of an automobile equipped with an accelerator wire with respect to the pedal depressing force, the return spring is driven at a constant speed. There is a possibility that the tire may cause early fatigue of the pedal stepping foot due to a large reaction force.

To solve the problem, it has been proposed to connect a dummy cable to the pedal arm so as to obtain a reaction force similar to that of the conventional one having an accelerator wire. The solution used is
Since a relatively large space is required for installing the dummy cable, it can be used only for large vehicles with sufficient space such as trucks and RVs. In addition, the reaction force adjustment by the dummy cable Is relatively difficult and may increase the cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned points, and an object of the present invention is to obtain an appropriate reaction force with respect to a pedal depressing force. An object of the present invention is to provide an accelerator pedal device that can be installed compactly and that can adjust a reaction force extremely easily.

[0007]

According to a first aspect of the present invention, there is provided an accelerator pedal device for a vehicle, comprising: a support frame; an accelerator pedal arm rotatably supported by the support frame; and an initial rotation of the accelerator pedal arm. The accelerator pedal device further includes a spring means for urging the rotation to the moving position, and a damper for imparting a resistance to the rotation of the accelerator pedal arm. Forming a gap for accommodating the viscous body between the first relative rotating body and a second relative rotating body disposed rotatably relative to the first relative rotating body. The rotation of the accelerator pedal arm causes the second relative rotator to rotate relative to the first relative rotator.

According to the accelerator pedal device for an automobile according to the first aspect of the present invention, the rotation of the accelerator pedal arm by depressing the pedal causes the second relative rotating body to rotate relative to the first relative rotating body. As a result, the viscous body accommodated in the gap is viscously sheared, and the viscous shear resistance generated by the shearing imparts a resistance to the rotation of the accelerator pedal arm. Since the generated viscous shear resistance is proportional to the relative rotational speed of the first relative rotating body and the second relative rotating body, there is almost no reaction force at the time of constant speed running. Does not cause fatigue.

Moreover, according to the present accelerator pedal device,
In addition to the relative rotational speed of the first relative rotating body and the second relative rotating body, the viscosity of the viscous body, the area of the first relative rotating body and the second relative rotating body in contact with the viscous body Since the resistance force that can be roughly given to the rotation of the accelerator pedal arm can be determined based on the gap distance, the reaction force can be adjusted extremely easily, and further, by appropriately setting each value,
It can be extremely compact and can be installed by effectively using a small space.

According to a second aspect of the present invention, there is provided an accelerator pedal device for an automobile according to the above device, wherein the first relative rotating body and the second relative rotating body are at a maximum depression position from an initial rotation position of the accelerator pedal arm. In order to apply the same resistance force to the accelerator pedal arm at each of the positions, the center of relative rotation and the center of rotation of the accelerator pedal arm are arranged on the same line, and the rotation angle of the accelerator pedal arm is It is relatively rotated with the same rotation angle as.

According to the second aspect of the present invention, the accelerator pedal device can be installed more compactly and preferably in a narrow space of the automobile.

In the accelerator pedal device for an automobile according to claim 1 or 2, even if the first relative rotating body is fixed to the accelerator pedal arm and the second relative rotating body is fixed to the support frame, The accelerator pedal arm may be rotatably supported on the support frame via the rotation shaft, the first relative rotating body may be fixed to the rotating shaft, and the second relative rotating body may be fixed to the support frame.

According to a fifth aspect of the present invention, there is provided an accelerator pedal device for an automobile according to the first aspect, wherein the resistance gradually increases at each position from an initial rotation position of the accelerator pedal arm to a maximum depression position. A rotation transmitting means is provided for transmitting rotation of the accelerator pedal arm to one of the first and second relative rotating bodies so as to apply a force to the accelerator pedal arm.

According to the accelerator pedal device of the present invention, since a resistance force is generated in accordance with the depression angle of the accelerator pedal arm, the reaction force and the feeling are almost the same as the depression of the accelerator pedal in a vehicle with an accelerator wire. Is obtained.

According to a fifth aspect of the present invention, the first relative rotating body and the second relative rotating body are disposed such that their relative rotation centers are eccentric with respect to the rotation center of the accelerator pedal arm. Is also good.

According to a seventh aspect of the present invention, there is provided an accelerator pedal device for an automobile according to the fifth or sixth aspect, wherein the rotation transmitting means is movably engaged with the guideway relative to the guideway. A guide engaging means having an engaging member, wherein transmission of rotation of the accelerator pedal arm to one of the first and second relative rotating bodies is performed by an engaging member along the guide path. Are performed through relative guidance movements.

According to a seventh aspect of the present invention, the first relative rotating body is fixed to the support frame, and the guide path is provided on one of the second relative rotating body and the accelerator pedal arm. The member may be provided on the other of the second relative rotating body and the accelerator pedal arm.

The accelerator pedal device for an automobile according to the present invention comprises:
Preferably, in the relative rotation of the first relative rotating body and the second relative rotating body, viscous shear resistance is generated in the viscous body accommodated in the gap.

In the above description, the guide path can be formed by a fitting groove or a ridge extending like a rail, but in a preferred example, the guide path is formed by a fitting groove. Further, the guide path may extend straight, but may be at least partially curved so as to obtain a preferable reaction force.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention and its embodiments will be described below with reference to the preferred embodiments shown in the drawings. The present invention is not limited to these embodiments.

[0021]

1 to 3, an accelerator pedal device 1 for an automobile according to the present embodiment includes a support frame 2, an accelerator pedal arm 3 rotatably supported on the support frame 2 in the R direction, and an accelerator pedal arm. 3 at the initial rotation position (FIG. 2)
(A position shown in FIG. 3), a damper 5 for applying a resistance to the rotation of the accelerator pedal arm 3 in the R direction, and a stop of the rotation of the accelerator pedal arm 3 at the initial rotation position. And a stopper (not shown).

The support frame 2 is fixed to the vehicle body 11 with rivets or bolts 12 and the like, and in this embodiment, rotatably supports the rotating shaft 13.

The accelerator pedal arm 3 has an accelerator pedal (not shown) at its tip, is fixed to a rotating shaft 13, and is rotatable in the R direction to the support frame 2 via the rotating shaft 13. Supported.

The spring means 4 is a coil spring 15 in this embodiment.
One end 16 is engaged with the support frame 2, and the other end 17 is engaged with the accelerator pedal arm 3. In FIG. 2, the accelerator pedal arm 3 is always elastically counterclockwise in the R direction. It is energizing.

The damper 5 forms a gap 23 for accommodating the viscous body 22 between the relative rotator 21 and the relative rotator 21 so as to be rotatable relative to the relative rotator 21 in the R direction. And a relative rotating body 24 arranged.

The relative rotating body 21 integrally includes an inner central small-diameter cylindrical portion 25, an outer large-diameter cylindrical portion 26, and an intermediate cylindrical portion 27 between the small-diameter cylindrical portion 25 and the large-diameter cylindrical portion 26. One end of the rotating shaft 13 is fitted and fixed to a through hole 29 defined by the inner peripheral surface 28 of the small-diameter cylindrical portion 25.

The relative rotating body 24 comprises half housings 32 and 33 fixed to each other by rivets 31.
An annular gap 2 between the facing surfaces of the half housings 32 and 33 and the surfaces of the large-diameter cylindrical portion 26 and the intermediate cylindrical portion 27
2, the projection 34 of the half housing 33 is fitted into the through-hole of the support frame 2, whereby the relative rotating body 24 is fixed to the support frame 2 so as not to rotate.

As the viscous body 22, a high viscous body whose characteristics are unlikely to change due to temperature changes, speed changes, long-term use, and the like is preferably used.

A seal ring 35 and an O-ring 36 are fitted between the relative rotating bodies 21 and 24 and between the half housings 32 and 33, respectively.

In the accelerator pedal device 1 for a vehicle formed as described above, when the accelerator pedal is depressed, the accelerator pedal arm 3 is turned clockwise in the R direction from the state shown in FIG. When it is rotated in the peripheral direction, the fuel injection to the engine is accelerated and accelerated by an electronic control unit (not shown). Conversely, when the accelerator pedal is released, the accelerator pedal arm 3 is released.
Is rotated counterclockwise in the R direction in FIG. 2 by the elastic force of the coil spring 15, the fuel injection to the engine is reduced by an electronic control unit (not shown), and the engine is decelerated.

In the accelerator pedal device 1, the relative rotating body 21 is rotated via the rotating shaft 13 by the rotation of the accelerator pedal arm 3 due to the depression of the pedal, and the relative rotating body 21 and 24 are moved in the R direction. As a result, the viscous body 24 accommodated in the gap 23 is viscously sheared,
An appropriate resistance (reaction force) is given to the rotation of the accelerator pedal arm 3 by viscous shear resistance generated by the viscous shear.

The viscous shear resistance generated by the damper 5 of the accelerator pedal device 1 is, as described above,
Since the damper 5 is proportional to the relative rotation speed between the rotating body 24 and the relative rotating body 24, the damper 5 hardly generates a reaction force on the accelerator pedal arm 3 at the time of constant speed running, does not cause early fatigue on the pedal foot, When the accelerator pedal is depressed, a reaction force corresponding to the depressing speed is generated in the accelerator pedal arm 3, so that unnecessary consumption of fuel due to excessive depression of the accelerator pedal can be eliminated.

According to the present accelerator pedal device 1,
The viscosity of the viscous body 22 and the relative rotating body 2 in contact with the viscous body 22
Since the resistance that can be applied to the rotation of the accelerator pedal arm 3 can be determined by the area between the rotation body 1 and the relative rotating body 24 and the interval between the gaps 23, the reaction force can be adjusted extremely easily. By setting the respective values as appropriate, the device can be made extremely compact and can be installed by effectively utilizing a small space.

In the accelerator pedal device 1, the relative rotating body 21 may be fixed directly to the accelerator pedal arm 3, and the relative rotating body 24 may be fixed to the support frame 2 facing the accelerator pedal arm 3. The body 24 may be fixed to the accelerator pedal arm 3 directly or to the rotating shaft 13, and the relative rotating body 21 may be fixed to the support frame 2.

In the accelerator pedal device 1 described above, the relative rotating body 21 and the relative rotating body 24 apply the same resistance to each other from the initial rotation position of the accelerator pedal arm 3 to the maximum depression position. 3
, The relative center of rotation 41 and the center of rotation 42 of the accelerator pedal arm 3 are disposed on the same line (concentric), and the relative rotator 21 rotates the accelerator pedal arm 3. Relative rotating body 2 having the same rotation angle as the angle
4, but instead, as shown in FIGS. 4 to 7, the relative rotation center 41 of the relative rotating body 21 and the relative rotating body 24 and the accelerator pedal arm. The damper 5 is arranged eccentrically with the rotation center 42, and gradually increases in the rotation of the accelerator pedal arm 3 from the initial position (the position shown in FIG. 5) to the maximum depression angle (the position of FIG. 8 described later). The rotation of the accelerator pedal arm 3 is applied to one of the relative rotator 21 and the relative rotator 24 so that the
In this embodiment, the accelerator pedal device 51 of the vehicle may be formed by including the rotation transmitting means 50 for transmitting the rotation to the relative rotating body 21.

In the damper 5 of the accelerator pedal device 51, fixed portions 55 and 56 are integrally formed with the half housings 32 and 33 constituting the relative rotating body 24, respectively. Each has a rotating shaft 1
3 are formed with through holes 57 and 58 through which one end thereof rotatably penetrates, and a fixing portion 55 of the half housing 32 is integrally formed with a projection 59 fitted into the support frame 2. , Whereby the half housings 32 and 33
Is fixed to the support frame 2 so as not to rotate even when the rotating shaft 13 is rotated.

The rotation transmitting means 50 includes a connecting rod 61 having one end fixed to the accelerator pedal arm 3, and a guide engaging means 62 for rotatably and movably receiving the other end of the connecting rod 61. are doing.

The guide engaging means 62 is relatively movably engaged with a guide member 63 fixed to the relative rotating body 21 and a linear groove 64 formed on the guide member 63 as a guide path. And an engaging member 66 having a hole 65 into which the other end of the connecting rod 61 is rotatably inserted. The engagement member 66 may be formed of an elastomer or the like in order to prevent collision noise and rattle.

The rotation transmitting means 50 transmits the rotation to the relative rotating body 21 via the connecting rod 61 and the guide engaging means 62 when the accelerator pedal arm 3 is rotated in the R direction. The transmission of the rotation of the accelerator pedal arm 3 to one of the relative rotator 21 and the relative rotator 24, in this example, the relative linear guidance of the engaging member 66 along the linear groove 64. This is done via movement.

In the above description, in order to increase the mechanical strength, the guide engaging means 62 is constituted by using the engaging member 66 arranged in the linear groove 64 so as to make surface contact.
The engaging member 66 may be formed of a cylindrical body that is rotatably and slidably fitted into the linear groove 64 so as to make line contact at 4. In this case, the cylindrical body may be rotatably attached to the connecting rod 61 or may be fixed thereto. However, in order to ensure smooth movement and rotation, the cylindrical body is preferably rotatably attached. The other end of the connecting rod 61 may be directly movably and rotatably disposed in the linear groove 64 without using the engaging member 66. Further, the guide path is constituted by the straight groove 64, but may be a groove in which at least another part such as a curved groove, an arc-shaped groove or a parabolic groove is curved and extends.

The accelerator pedal device 5 shown in FIGS. 4 to 7
1, the accelerator pedal is depressed against the elastic force of the coil spring 15 so that the accelerator pedal arm 3
Is rotated about the center 42 in the R direction, and the connecting rod 61 is also rotated about the center 42 in the R direction. With the rotation of the connecting rod 61, the engaging member 66 rotatably attached to the other end of the connecting rod 61 is guided by the linear groove 64 and moved while rotating the guide member 63 around the center 41. When the guide member 63 is rotated, the relative rotator 21 fixed to the guide member 63 is also rotated with respect to the relative rotator 24. When performing the maximum fuel injection, the accelerator pedal arm 3 is brought to the maximum depression position as shown in FIG. In this example, as shown in FIG.
At the maximum rotation position of the accelerator pedal arm 3, the axis 71 of the connecting rod 61 is positioned on a straight line connecting the centers 41 and 42.

When the depression of the accelerator pedal is released, the accelerator pedal arm 3 is moved by the coil spring 15.
After being rotated in the opposite direction, it is returned to the initial rotation position as shown in FIG. 5, and abuts against the stopper to stop the rotation.

During the above operation, the fuel injection to the engine is determined by the electronic control unit according to the rotation angle of the accelerator pedal arm 3 in the same manner as described above.

Here, the transmission characteristic relating to the rotation amount of the rotation transmitting means 50 is expressed by the relative rotating body 21 with respect to the relative rotating body 24.
And the rotation amount β of the accelerator pedal arm 3, the distance L 1 from the center 42 to the axis 71 of the connecting rod 61, and the distance L 2 from the center 41 to the center 42,
It becomes like the following formula.

Β = (arctan (L2 · sinα) /
(L1-L2cosα)) + α

Further, the intersection angle between a line 72 orthogonal to a line connecting the center 42 and the axis 71 and a line 73 orthogonal to a line connecting the center 41 and the axis 71 is θ, and the center 41 and the axis Θ, the torque radius ratio, where L3 is the torque radius with respect to the relative rotating body 21, T1 is the torque reaction force acting on the accelerator pedal arm 3, and T3 is the rotation torque generated by the damper 5. L1 / L3 and torque ratio T1 / T
The following equation is established between the first and third conditions.

(T1 / T3) = cos θ × (L1 / L3)

As an example, L1 = 29 mm, L2 = 22 m
The relationship among the intersection angles α, β, θ, the torque radius ratio L1 / L3, and the torque ratio T1 / T3 is as shown in Table 1.

[0049]

[Table 1] α ° β ° θ ° L1 / L3 T1 / T3 0 59.2 40.63 2.695 2.045 18.5 0 0 4.143 4.143

As is clear from Table 1, in the accelerator pedal device 51 having the rotation transmitting means 50, the initial rotation position of the accelerator pedal arm 3 (α = 0 °, β = 59.
2 °), the maximum rotation position of the accelerator pedal arm 3 (α = 18.5 °, β =
0 °), the torque ratio T1 / T3 becomes large, and therefore, compared to the reaction force T1 to the depression of the accelerator pedal near the initial rotation position of the accelerator pedal arm 3, the vicinity of the maximum rotation position of the accelerator pedal arm 3 The reaction force T1 with respect to the depression of the accelerator pedal becomes larger. That is, in the accelerator pedal device 51 having the rotation transmitting means 50, the resistance force that gradually increases at each rotation position from the initial rotation position of the accelerator pedal arm 3 to the maximum depression position is applied to the accelerator pedal arm 3. Has become.

In the accelerator pedal device 51 described above, the same effect as that of the accelerator pedal device 1 can be obtained, and in addition, a reaction force that increases as the accelerator pedal depression amount increases can be obtained. As a result, the accelerator pedal 3 is excessively depressed. Unnecessary consumption of fuel can be eliminated.

In the accelerator pedal device 51, the damper 5 is provided at a position away from the accelerator pedal arm 3.
As shown in FIG. 9, the damper 5 is connected to the accelerator pedal arm 3.
May be provided adjacent to the. In the accelerator pedal device 81 shown in FIG. 9, a positioning collar 82 is mounted on the rotating shaft 13 between the accelerator pedal arm 3 and the half housing 32 of the damper 5, and one end is connected to the accelerator pedal arm 3. The other end of the fixed short connecting rod 61 is rotatably inserted into the hole 65 of the engaging member 66, and a long projection 59 integrally formed on the fixing portion 55 of the half housing 32 supports. It is inserted into the frame 2.

The accelerator pedal device 81 operates in the same manner as the accelerator pedal device 51, does not cause early fatigue of the pedal foot, and when the accelerator pedal is depressed, a reaction force corresponding to the depressing speed is obtained. Is generated in the accelerator pedal arm 3, so that unnecessary consumption of fuel due to excessive depression of the accelerator pedal can be eliminated, the reaction force can be adjusted extremely easily, and the respective values can be set appropriately. Thereby, the device can be made extremely compact and can be installed by effectively utilizing a small space.

The relative rotating body 21 is fixed to the support frame, a linear groove 64 as a guide path is provided in one of the relative rotating body 24 and the accelerator pedal arm 3, and the engaging member 66 is connected to the relative rotating body 24 and the accelerator pedal arm 3. Of course, it may be provided on the other of the accelerator pedal arms 3.

[0055]

According to the present invention, an appropriate reaction force can be obtained with respect to the pedal depression force, and can be installed more compactly than a dummy cable, and the reaction force can be adjusted extremely easily. It is possible to provide an accelerator pedal device that can perform the operation.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a preferred embodiment of the present invention.

FIG. 2 is a side view of the example shown in FIG.

FIG. 3 is an enlarged sectional view of the damper of the example shown in FIG.

FIG. 4 is a front sectional view of another preferred embodiment of the present invention.

FIG. 5 is a side view of the example shown in FIG.

FIG. 6 is an enlarged side view of the damper of the example shown in FIG.

FIG. 7 is an enlarged front view of the damper of the example shown in FIG.

FIG. 8 is an operation explanatory diagram of the example shown in FIG. 4;

FIG. 9 is a front sectional view of still another preferred embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Accelerator device of automobile 2 Support frame 3 Accelerator pedal arm 4 Spring means 5 Damper 21, 24 Relative rotating body 22 Viscous body 23 Clearance

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hideo Takeda 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (72) Inventor Keiichi Yoneda 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation ( 72) Inventor Ryo Tanahashi 1-1-1, Kariya City, Aichi Prefecture, Tsuda Kogyo Co., Ltd. (72) Inventor Tetsuya Arao 1-1-1, Kariya City, Aichi Prefecture Tsuda Kogyo Co., Ltd. (72) Inventor, Masamitsu Kojima 8F, Kiriharacho, Fujisawa-shi, Kanagawa Prefecture Oiles Industry Co., Ltd. Fujisawa Plant (72) Inventor Miteru Igarashi 8th, Kiriharacho, Fujisawa-shi, Kanagawa Prefecture Oiles Industry Co., Ltd. Fujisawa Plant F-term (reference) 3D037 EA01 EB04 EB07 EB19 3J069 AA41 BB01 CC09 CC13 3J105 AA12 AB11 AC01 BB32 BB33 DA01

Claims (9)

[Claims] 1. A support frame, an accelerator pedal arm rotatably supported by the support frame, spring means for urging the accelerator pedal arm to an initial rotation position, and rotation of the accelerator pedal arm And a damper for providing resistance to the first relative rotating body, the first relative rotating body, forming a gap for accommodating a viscous body between the first relative rotating body, the first relative rotating body A second relative rotating body disposed rotatably relative to the relative rotating body, and a second relative rotating body with respect to the first relative rotating body by rotation of the accelerator pedal arm. An accelerator pedal device for a motor vehicle, which is relatively rotated. 2. The first relative rotating body and the second relative rotating body apply the same resistance to the accelerator pedal arm at each position from an initial rotation position of the accelerator pedal arm to a maximum depression position. To this end, the center of relative rotation and the center of rotation of the accelerator pedal arm are arranged on the same line, so that they are relatively rotated with the same rotation angle as the rotation angle of the accelerator pedal arm. Item 2. An accelerator pedal device for an automobile according to Item 1. 3. The accelerator pedal device for an automobile according to claim 1, wherein the first relative rotating body is fixed to an accelerator pedal arm, and the second relative rotating body is fixed to a support frame. 4. An accelerator pedal arm is rotatably supported by a support frame via a rotating shaft, a first relative rotating body is fixed to the rotating shaft, and a second relative rotating body is supported by the supporting frame. 3. The accelerator pedal device for an automobile according to claim 1, wherein the accelerator pedal device is fixed to a frame. 5. The rotation of the accelerator pedal arm is first and second so as to apply a gradually increasing resistance force to the accelerator pedal arm at each position from an initial rotation position of the accelerator pedal arm to a maximum depression position. 2. The accelerator pedal device for an automobile according to claim 1, further comprising a rotation transmitting means for transmitting the rotation to one of the relative rotating bodies. 6. The vehicle according to claim 5, wherein the first relative rotating body and the second relative rotating body are arranged with their relative rotation centers eccentric with respect to the rotation center of the accelerator pedal arm. Accelerator pedal device. 7. The rotation transmitting means includes a guide engaging means having a guide path and an engaging member movably engaged with the guide path. Transmission of the rotation of the accelerator pedal arm to one of the relative rotating bodies is:
7. The accelerator pedal device for a motor vehicle according to claim 5, wherein the operation is performed through relative guide movement of the engaging member along the guide path. 8. The first relative rotating body is fixed to the support frame, the guide path is provided on one of the second relative rotating body and the accelerator pedal arm, and the engaging member is The damper according to claim 7, wherein the damper is provided on the other of the second relative rotating body and the accelerator pedal arm. 9. A viscous shear resistance is generated in a viscous body accommodated in a gap when the first relative rotator and the second relative rotator rotate relative to each other. The accelerator pedal device for an automobile according to any one of claims 1 to 4.