JP2002012052A - Accelerator pedal device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an accelerator pedal device for an automobile shortened in axial length and easily installed in a narrow space around an accelerator pedal arm while reducing cost and assembly man-hours. SOLUTION: This accelerator pedal device 1 for the automobile is provided with a support frame 5 having a pair of side plate parts 2, 3 and a bottom plate part 4 integrally formed at the side plate parts 2, 3 while bridging the side plate parts 2, 3; a shaft member 7 supported to the side plate parts 2, 3 of the support frame 5 rotatably in an R-direction around an axis 6 and serving as a rotatable shaft of a damper 10; an accelerator pedal arm 8 mounted to the shaft member 7; a coil spring 9 for energizing the accelerator pedal arm 8 to rotate into the initial rotational position; and the damper 10 for generating frictional resistance gradually increased with the rotation of the accelerator pedal arm 8 from the initial rotational position through the shaft member 7.

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 appropriately applying a brake to the rotation of an accelerator pedal arm of an automobile, and a damper suitable for use in the accelerator pedal device.

[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, As a result, the reaction force with respect to the pedal depression force is different, and the hysteresis characteristic in the relationship between the pedal depression amount and the pedal depression force is substantially narrow, in other words, the pedal depression force characteristic with respect to the pedal depression amount becomes linear. For this reason, when a general driver who is accustomed to a car with an accelerator wire drives an accelerator wireless car, the accelerator pedal is depressed too much, fuel is consumed more than ever, or a certain amount of pedal depression May be difficult to maintain the rotational position of the accelerator pedal arm A.

If the spring force of the return spring for returning the accelerator pedal arm to the initial rotation position is simply increased in order to obtain a large reaction force with respect to the pedal depressing force, the large reaction force from the return spring at a constant speed traveling causes There is a possibility that early fatigue may occur in the pedal foot.

Therefore, one end is terminated by a coil spring and an accelerator pedal arm is connected to the other end of the dummy cable inserted through the fixed spiral tube. It has been proposed that a reaction force having a hysteresis characteristic in the relationship between the pedal depression amount and the pedal depression force similar to that described above can be obtained.However, a solution using this dummy cable is to install a dummy cable. Because it requires a relatively large space, it can be used only for large-sized vehicles such as trucks and RVs that have ample space. In addition, it is relatively difficult to adjust the reaction force using a dummy cable. , The cost may be high,
In order to obtain hysteresis characteristics, a metal dummy cable is slid on the resin-coated inner surface of the tube to generate sliding resistance between the metal dummy cable and the resin-coated inner surface of the tube. Abrasion due to sliding may cause a large change in characteristics in long-term use.

Recently, there has been proposed a pedal device with a damper for applying a frictional resistance force, which gradually increases with rotation of an accelerator pedal arm, to the accelerator pedal arm via a shaft member.

In such a proposed pedal device with a damper, the damper is usually mounted on the frame, and then the frame is mounted on the body of the automobile. And a flange (flange) for attachment to the frame must be formed on the damper, so that the length of the damper in the axial direction becomes long, and the damper can be attached to a narrow space around the accelerator pedal arm. It will be difficult.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to prevent the accelerator pedal from being excessively depressed, and according to the pedal depression amount,
The range of the pedal depression force that can maintain the rotation position of the accelerator pedal arm at that pedal depression amount can be increased, the assembly man-hour can be reduced, and the axial length can be shortened. It is an object of the present invention to provide an accelerator pedal device for a vehicle and a damper suitable for the accelerator pedal device, which can be easily installed even in a narrow space and can reduce the cost.

[0009]

According to a first aspect of the present invention, there is provided an accelerator pedal device for an automobile, wherein the accelerator pedal arm is pivotally biased to an initial rotational position, and the accelerator pedal arm is moved from the initial rotational position to the initial position. And a damper that generates a frictional resistance that gradually increases with the rotation. The frictional resistance generated by the damper is imparted to the accelerator pedal arm at least from the initial rotation position. The damper has a housing and is fixed to the vehicle body via a support frame, and a combined body of the housing and the support frame is
It is composed of an integrally formed product.

According to the accelerator pedal device of the first aspect, the accelerator pedal is provided with a damper that generates a frictional resistance that gradually increases in accordance with the rotation of the accelerator pedal arm from the initial rotation position. Can be avoided, and the combined body of the housing and the support frame is made of an integrally molded product, which reduces assembly man-hours, shortens the axial length, and can be used in narrow spaces around the accelerator pedal arm. It can be easily installed and cost can be reduced.

In the present invention, preferably, the support frame includes at least a pair of side plate portions, and a bottom plate portion formed integrally with the side plate portions by bridging the pair of side plate portions. The housing may be provided on the outer surface of one of the side plate portions as in the accelerator pedal device of the vehicle of the second embodiment, or may be provided as a pair of side plate portions as in the accelerator pedal device of the vehicle of the third embodiment. May be provided so as to bridge.

According to the accelerator pedal device of the second aspect, since the shaft member can be supported at both ends, the shaft member can be firmly rotatably supported. According to the accelerator pedal device of the third aspect, the housing is In order to be able to support both ends,
The housing can be firmly supported, and the width in the axial direction can be shortened to further reduce the size.

In the present invention, the support frame may be configured to include a pair of side plate portions and a bottom plate portion as in the accelerator pedal device according to the second or third aspect.
As in the case of the accelerator pedal device for a vehicle according to the fourth aspect, a support frame may be provided with a bottom plate portion, and a housing may be provided integrally with the bottom plate portion.

When the housing is formed integrally with the bottom plate portion without providing a pair of side plates as in the accelerator pedal device of the fourth aspect, the width in the axial center direction can be further reduced and the accelerator can be made more compact. It can be easily installed in a narrow space around the pedal arm, and cost can be reduced.

According to a fifth aspect of the present invention, there is provided an accelerator pedal device for an automobile according to any one of the first to fourth aspects, wherein the damper has a rotatable shaft extending into the housing and the rotation shaft. The frictional force gradually increases in accordance with the rotation of the universal shaft from the initial rotational position, and here, like the accelerator pedal device of the automobile according to the sixth aspect, the accelerator pedal arm, the rotatable shaft and The device further comprises a transmission mechanism interposed between the transmission device and the transmission mechanism for transmitting the rotation of the accelerator pedal arm from at least the initial rotation position to the rotatable shaft, and the damper is moved from the initial rotation position of the accelerator pedal arm. The frictional resistance gradually increased by the rotation of the rotatable shaft following the rotation of the shaft is applied to the accelerator pedal arm via the transmission mechanism. Then, by appropriately setting the transmission ratio in the transmission mechanism, the frictional resistance applied to the accelerator pedal arm via the transmission mechanism can be increased or decreased, and the rate of increase (decrease rate) of the frictional resistance can be increased or decreased. Thus, even when the required hysteresis characteristics are different for each type of automobile, it is possible to easily cope with various required hysteresis characteristics, and it is not necessary to prepare various dampers. An increase in the cost of the damper can be suppressed.

[0016] The rotatable shaft extending into the housing may be rotatably supported by the housing at both ends or one end thereof.

In the present invention, the transmission mechanism may use a gear or the like. However, as a preferred example, the transmission mechanism is similar to the accelerator pedal device for an automobile according to the seventh aspect. Even if the rotation of the accelerator pedal arm to the initial rotation position is transmitted to the rotatable shaft in addition to the rotation from the initial rotation position, the accelerator pedal device of the automobile according to the eighth aspect is provided. A link member having one end fixed to the rotatable shaft, and an engaging member provided at the other end of the link member and movably engaged with the accelerator pedal arm. Like the accelerator pedal device for a vehicle according to the ninth aspect, a link member having one end fixed to the rotatable shaft and having a forked other end, and a space formed by the forked other end of the link member. And an engaging member fixedly attached to the accelerator pedal arm while being movably engaged with the other end of the bifurcated shape, as in the case of the accelerator pedal device for a vehicle according to the tenth aspect. When the accelerator pedal arm is turned to the initial turning position, the frictional resistance generated by the damper may be transmitted to the accelerator pedal arm.

When the transmission mechanism is configured as the accelerator pedal device according to the seventh aspect, the characteristic of the damper is imparted to the rotation of the accelerator pedal arm to the initial rotation position. Accordingly, the rotational position of the accelerator pedal arm at the pedal depression amount can be kept constant, and therefore, the hysteresis characteristic of the damper is given to the accelerator pedal arm as it is,
According to the accelerator pedal device of the ninth aspect, since the rotation of the accelerator pedal arm to the initial rotation position can be transmitted to the rotatable shaft, the accelerator pedal device of the seventh aspect has a simple configuration. The same effect as that of the accelerator pedal device of the tenth aspect can be obtained, and the same effect as that of the accelerator pedal device of the seventh aspect can be obtained. In addition, the free end of the bifurcated other end of the link member is
In a preferred example, for example, they are not connected, but the present invention is not limited to this, and they may be connected to each other. In this case, the space formed by the other end of the forked shape is the same as the closed space. Become.

The accelerator pedal device for an automobile according to the present invention comprises:
Like the accelerator pedal device of the eleventh aspect, the device further includes a shaft member rotatably supported by the support frame, and a coil spring for urging the accelerator pedal arm to the initial rotation position. Here, the accelerator pedal arm may be attached to a shaft member, and as in the twelfth aspect of the accelerator pedal device, the coil spring has one end supported by the accelerator pedal arm and the other end supported by the accelerator pedal arm. Each may be locked to the frame and may be wound around the housing. When the coil spring for urging the accelerator pedal arm to the initial rotation position is wound around the housing of the damper, the axial width of the combined body of the coil spring and the housing can be reduced. Thus, it can be mounted on the vehicle body with a small mounting space.

According to a thirteenth aspect of the present invention, there is provided an accelerator pedal device for an automobile according to the fifth to tenth aspects, wherein the shaft member rotatably supported by the support frame and the accelerator pedal arm are provided. And a coil spring for urging the accelerator pedal to the initial rotation position, wherein the accelerator pedal arm is mounted on the shaft member, and the rotatable shaft is an axis parallel to the axis of the shaft member. Has,
With such a rotatable shaft, the transmission mechanism can be simply configured, and an inexpensive accelerator pedal device can be provided.

In the thirteenth aspect of the accelerator pedal device,
Like an automobile accelerator pedal device of the fourteenth aspect,
One end of the coil spring is attached to the accelerator pedal arm,
The other ends may be locked to the support frame, respectively, and may be wound around the housing. When the coil spring is wound around the housing of the damper as described above, the twelfth aspect will be described. Similarly to the accelerator pedal device, the width of the combination of the coil spring and the housing in the axial direction can be shortened, and thus the assembly can be mounted on the vehicle body with a small mounting space.

In the present invention, the accelerator pedal arm may be fixed to a rotatable shaft as in the fifteenth embodiment of the accelerator pedal device for a vehicle.

An accelerator pedal device for an automobile according to a sixteenth aspect of the present invention is the accelerator pedal device according to any one of the first to fifteenth aspects, further comprising a detecting means for detecting a rotation angle of the accelerator pedal arm. Here, the detecting means may be built in the housing as in the accelerator pedal device according to the seventeenth aspect, and may be provided instead as in the accelerator pedal device according to the eighteenth aspect. , Another rotatable shaft, and another transmission mechanism disposed between the accelerator pedal arm and the other rotatable shaft and transmitting the rotation of the accelerator pedal arm to the other rotatable shaft. ,
The rotation angle of another rotatable shaft may be detected as the rotation angle of the accelerator pedal arm.

When the detecting means is incorporated in the housing, the accelerator pedal device can be compactly installed, a significant space reduction can be expected, and the operation of adjusting the mutual operating position of the damper and the detecting means can be omitted. .

According to the accelerator pedal device of the eighteenth aspect, another transmission mechanism is disposed between the accelerator pedal arm and the other rotatable shaft, and the detecting means detects the rotation angle of the accelerator pedal arm. The rotation angle of the accelerator pedal arm can be more finely or coarsely detected by appropriately setting the transmission ratio in the other transmission mechanism because the detection is performed via the other transmission mechanism and the rotatable shaft. The detection resolution can be increased or decreased.

In the present invention, the other transmission mechanism preferably has one end fixed to another rotatable shaft and the other end of a forked shape like the nineteenth aspect of the accelerator pedal device for an automobile. The other link member and the other link member are disposed in a space formed by the other end of the forked portion, and are movably engaged with the other end of the forked portion and fixed to the accelerator pedal arm. And other engagement members.

According to the nineteenth aspect of the accelerator pedal device, the detecting means is reliably returned to detect the initial rotation angle of the accelerator pedal arm via another transmission mechanism. Can be prevented from being detected even if is returned to the initial rotation position. The free ends of the other forked bifurcated ends of the other link members are unconnected in a preferred example, similarly to the ninth aspect, but the present invention is not limited to this. In this case, the space formed by the bifurcated other end is a closed space.

In the present invention, the detecting means is preferably optical, like the accelerator pedal device of the twentieth aspect.
Although comprised of a magnetic or electrical resistance detector, the invention is not so limited. In addition, the electric resistance detector is a so-called potentiometer type,
For example, including a contact that rotates with the rotation of a rotatable shaft or a shaft member, and an electric resistor that contacts the contact,
The rotation angle of the rotatable shaft or the shaft member is electrically detected based on the electric resistance at the position where the contact contacts the electric resistor.

In the accelerator pedal device of the first aspect, it is sufficient that the accelerator pedal arm is provided with the frictional resistance generated by the damper at least from the rotation from the initial rotation position. However, in addition to this, as in the accelerator pedal device according to the twenty-first aspect, the accelerator pedal arm has friction generated by the damper even when the accelerator pedal arm is rotated to the initial rotation position. Resistance may be applied, and in the accelerator pedal device of this aspect, according to the pedal depression amount,
The range of the pedal depressing force that can maintain the rotation position of the accelerator pedal arm at the pedal depressed amount constant can be increased.

In the present invention, the damper is preferably a movable body which is movable in the axial direction and is immovable in the direction around the axial center, like the accelerator pedal device of the twenty-second aspect. A rotating body facing the movable body and rotatable around an axis and rotated based on rotation of an accelerator pedal arm; and a spring for elastically urging the movable body toward the rotating body. Means, by moving the movable body away from the rotating body in the axial direction against the elastic force of the spring means in the rotation of the rotating body, and increasing the spring force of the spring means,
Frictional force generating means for generating a gradually increasing frictional resistance force, wherein each of the movable body, the rotating body, the spring means, and the frictional resistance force generating means is built in the housing.

In the present invention, the frictional resistance generating means of the damper preferably has an axial center on one surface of the rotating body facing the movable body, such as the accelerator pedal device of an automobile according to the twenty-third aspect. Direction, and a projection integrally formed by projecting toward one surface of the movable body, and one surface of the movable body facing the rotating body, And a projection integrally formed so as to protrude toward the surface, and the two projections are in surface contact with each other.

In the accelerator pedal device according to the twenty-third aspect, the frictional resistance generating means is disposed between the movable body and the rotating body, and is formed by a projection integrally formed on each of the movable body and the rotating body. Because of this configuration, it can be made extremely compact, can be installed by effectively using a small space, and, in order to make both projections come into surface contact, the friction coefficient on the contact surface must be set appropriately. Thus, it is possible to determine the resistance force that can be given to the rotation of the accelerator pedal arm, and it is possible to extremely easily adjust the reaction force having a hysteresis characteristic in the relationship between the pedal depression amount and the pedal depression force.

[0033] In the accelerator pedal device according to the twenty-fourth aspect of the present invention, in the accelerator pedal device according to the twenty-second or twenty-third aspect, the frictional resistance generating means may face the movable body. And an inclined surface formed on one surface of the movable body facing the rotating body and in contact with the inclined surface.

According to the accelerator pedal device of the twenty-fourth aspect, the friction coefficient between the inclined surface formed on one surface of the rotating body and the inclined surface formed on one surface of the movable body is appropriately set. By doing so, it is possible to determine a resistance force that can be roughly given to the rotation of the accelerator pedal arm, and it is possible to extremely easily adjust the reaction force with hysteresis characteristics in the relationship between the pedal depression amount and the pedal depression force.

In the accelerator pedal device according to the twenty-fifth aspect of the present invention, in the accelerator pedal device according to any one of the twenty-second to twenty-fourth aspects, the frictional resistance generating means includes a rotating body. It has a fixed surface in surface contact with the other surface.

In the accelerator pedal device according to the twenty-fifth aspect, by appropriately setting the friction coefficient between the other surface of the rotating body and the fixed surface, it is possible to roughly determine the resistance force that can be applied to the rotation of the accelerator pedal arm. So, as above,
Reaction force adjustment with hysteresis characteristics can be performed very easily.

In the accelerator pedal device according to the twenty-fifth aspect, each of the other surface of the rotating body and the fixed surface that are in surface contact with each other may be formed as inclined surfaces, and the fixed surface may be formed as an axis. The positioning may be freely adjustable in the axial direction. When the fixing surface is freely adjustable in the axial direction in this way, the initial elastic force generated by the spring means, in other words, the initial resistance force can be adjusted and set arbitrarily. Optimum initial resistance can be obtained.

The spring means may be any one using rubber or a leaf spring. Preferably, the spring means is provided with at least one coil spring so as to have excellent durability and a simple structure. Acquisition, and may be configured to include at least a pair of coil springs arranged concentrically, such as the accelerator pedal device of the automobile of the twenty-sixth aspect, in this case, at least a pair of coil springs,
As in the case of the accelerator pedal device of the twenty-seventh aspect of the vehicle, having different elastic coefficients, one of the coil springs can be used for fine adjustment, and the design of the resistance force,
Adjustments can be made easily and are very preferred from this perspective.

In the present invention, if the detecting means detects the rotation angle of the shaft member to detect the rotation angle of the accelerator pedal arm, the rotation angle of the accelerator pedal arm is determined by the backlash or the like. It can be detected as it is without being affected by.

In the case where the transmission mechanism is configured as a one-way clutch and the detecting means detects the rotation of the shaft member, the rotatable shaft is initially rotated for some reason such as a failure. Even if it is not possible to return to the initial position, only the accelerator pedal arm can be independently returned to the initial rotation position and the detection means can reliably send a detection signal that has detected the initial rotation angle of the accelerator pedal arm. It is possible to avoid a situation in which the accelerator pedal arm cannot be returned and rotated to the initial rotation position due to a failure or the like, and an abnormal detection signal is transmitted from the detection means.

[0041]

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

Referring to FIGS. 1 to 9, an accelerator pedal device 1 for an automobile according to the present embodiment is formed integrally with the side plates 2 and 3 by bridging the pair of side plates 2 and 3 and the side plates 2 and 3. A support frame 5 having a bottom plate portion 4, and a shaft rotatably supported by the side plate portions 2 and 3 of the support frame 5 in the R direction about an axis 6, and also serving as a rotatable shaft of a damper 10 described later. A member 7, an accelerator pedal arm 8 attached to the shaft member 7, a coil spring 9 for urging the accelerator pedal arm 8 to the initial rotation position, and an initial rotation of the accelerator pedal arm 8 via the shaft member 7 Damper 1 that generates a frictional resistance force that gradually increases with rotation from a position
0, a stopper 11 for inhibiting further rotation of the accelerator pedal arm 8 when the accelerator pedal arm 8 returns to the initial rotation position, and a detecting means 12 for detecting a rotation angle of the accelerator pedal arm 8. are doing.

The support frame 5 is fixed to the vehicle body by rivets or bolts 13 by a bottom plate portion 4 and rotatably supports the shaft member 7 by the side plate portions 2 and 3.

The accelerator pedal arm 8 has an accelerator pedal 14 at one end, and is fixed to the shaft member 7.
It is supported by the support frame 5 via the shaft member 7 so as to be rotatable in the R direction about the axis 6. In this example, the accelerator pedal arm 8 has a frictional resistance generated by the damper 10 in both the rotation from the initial rotation position and the rotation to the initial rotation position, in other words, the rotation in both directions. Power is applied.

The coil spring 9 is formed of a torsion coil spring, one end 15 of which is locked to the accelerator pedal arm 8 and the other end 16 of which is locked to the bottom plate 4 of the support frame 5, respectively. The pedal arm 8 is always elastically biased in a counterclockwise direction in the R direction. One end 15 of the coil spring 9 extends through a recess 22 of the side plate portion 3. The recess 22 is moved by the rotation of the accelerator pedal arm 8 in the R direction by the one end 15 of the coil spring 9. It is formed so that it can rotate. In addition,
Instead of locking the other end 16 to the bottom plate 4 of the support frame 5, the other end 16 may be locked to the side plate 2.

The damper 10 is formed integrally with the outer surface 46 of the side plate portion 2 of the support frame 5 at one end 17 of the annular shape, and has a bottomed cylindrical housing 21 integrally formed with the bottom 20 at the other end 19. The shaft member 7 is extended into the housing 21 and is used as a rotatable shaft.
1 is movable in the direction of the axis 6 with respect to the axis 1 and is disposed in the direction around the axis 6, that is, fixed in the R direction.
The other end portions 25 abut against the movable body 23, respectively, and a coil spring as spring means disposed between the movable body 23 and the bottom portion 20 in the housing 21, particularly preferably a compression coil spring 26, and the housing 21 A rotating body 28 facing the movable body 23 as a movable spring receiver and rotatable in the R direction with respect to the housing 21, and being rotated by rotation of the shaft member 7; The movable body 23 is moved to the rotating body 28 against the elastic force of the coil spring 26 when the rotating body 28 rotates in the R direction.
From the housing 20 in the direction of the axis 6.
And a frictional resistance generating means 29 for generating a gradually increasing frictional resistance by increasing the spring reaction force of the coil spring 26, and an annular lid fastened and fixed to one end 17 of the housing 21. And a member 34.

The housing 21 of the present embodiment includes a cylindrical portion 31 and
Bottom 20 integrally formed with the other end 19 of the cylindrical portion 31
And is formed integrally with the support frame 5,
Thus, the combined body 111 of the housing 21 and the support frame 5 is formed as an integrally molded product.

The cylindrical portion 31 has at least one, in this example, six grooves 41 (only one is shown) formed on the inner peripheral surface 32 of the cylindrical portion 31 in addition to the screw portion 33 and extending in the axial center 6 direction. And the grooves 41 are arranged at equal angular intervals in the R direction.

The cover member 34 has a screw portion 50 on its outer peripheral surface.
Has a through hole 51 in the center through which the shaft member 7 passes with a margin, and the screw portion 50 is screwed to the screw portion 33,
It is fastened and fixed to one end 17 of the cylindrical portion 31.

The movable body 23 is integrally formed with an annular plate-shaped main body 56 having a through hole 55 at the center and an outer peripheral surface 57 of the main body 56, as shown in detail in FIGS. 4, 5 and 6. It has at least one, in this example six, projections 58 formed and an annular recess 60 formed on the surface 59 facing the bottom 20, each projection 58 being equiangularly spaced in the R direction. The movable body 23 is movable in the direction of the axis 6 and is immovable in the direction R, so that the recess 60 , The other end 25 of the coil spring 26 is seated on the main body 56.

The coil spring 26 is disposed within the cylindrical portion 31 so as to be concentric with the cylindrical portion 31 and elastically compressed so as to separate the movable body 23 from the bottom portion 20 in the direction of the axis 6.

As shown in detail in FIGS. 7, 8 and 9 in particular, the rotating body 28 has a cylindrical portion 65 and an annular plate portion integrally formed on one end of an outer peripheral surface 66 of the cylindrical portion 65. 67, and the cylindrical portion 65 is slidable relative to the inner peripheral surface 68 of the main body 56 passing through the through-hole 55 and defining the through-hole 55 in the axial direction 6 and the R direction. The cylindrical portion 65 is extended in contact therewith. Flat surfaces 70 and 71 facing each other are formed in the central circular hole 69 in the central circular hole 69, and a shaft member is formed in the central circular hole 69 defined by the flat surfaces 70 and 71. 7, the two chamfered parts are inserted,
When the shaft member 7 is rotated clockwise in FIG. 2 by the rotation of the accelerator pedal arm 8 in the R direction, the rotating body 28 is also rotated in the same direction by the rotation of the shaft member 7. ing.

It is preferable that the cylindrical portion 65 is formed long so as to penetrate the through-hole 55 because the movement of the rotating body 28 in the direction of the axis 6 and the rotation in the R direction can be guided by the inner peripheral surface 68 of the main body 56. However, instead, the cylindrical portion 65 is formed short or omitted without extending to the through-hole 55,
The movement of the rotating body 28 in the direction of the axis 6 and the rotation in the R direction may be guided by the inner peripheral surface 32 of the cylindrical portion 31.

The frictional resistance generating means 29 is provided on the outer peripheral side of the annular surface 82 of the annular plate 67 of the rotating body 28 facing the annular surface 81 of the main body 56 of the movable body 23 in the direction of the axis 6. At least one integrally formed with the inclined surface 83 protruding toward the surface 81 of the movable body 23, in this example, 3
The protrusions 84 and the outer peripheral side of the surface 81 of the main body 56 of the movable body 23 facing the surface 82 of the annular plate 67 of the rotating body 28, in the direction of the axis 6 toward the surface 82 of the rotating body 28. At least one, in this example, three projections 86 integrally formed with an inclined surface 85 projecting and in surface contact with the inclined surface 83
And an annular surface 87 of the annular plate portion 67 of the rotating body 28 and a fixed surface 88 so as to make surface contact with the rotatable surface 87.

The three projections 84 are arranged at equal angular intervals in the R direction on the surface 82 and are integrally formed on the annular plate portion 67. Similarly, the projections 86 are equiangular in the R direction on the surface 81. Being spaced apart and integrally formed with the body 56, the inclined surfaces 83 and 85 are formed complementary so as to make surface contact with each other and preferably inclined at an inclination of about 45 ° with respect to the axis 6. Have been.

The surface 81 is formed with a recess 91 into which the tip of each projection 84 in the direction of the axis 6 falls, and a step 92 defining the recess 91 connected to the projection 86. Also, a recess 93 in which the tip of each projection 86 in the direction of the axial center 6 falls, and a step 94 defining the recess 93 are formed continuously with the projection 84, and the step 92 and the step 94 The initial surface contact position between the inclined surface 83 and the inclined surface 85 is defined (the projections 84 and 86 and the like are omitted in FIGS. 5 and 9).

The fixing surface 88 is formed of one surface of the lid member 34 which is screwed to the screw portion 33 formed on the inner peripheral surface 32 of the cylindrical portion 31 and is fixed to one end 17 of the cylindrical portion 31. Note that the frictional resistance generating means 29 may be configured by omitting the lid member 34 that forms the fixed surface 88. In this case, the rotating body 28 is in the direction of the axis 6 and separated from the movable body 23. The rotating body 28 so that it does not move
22.

The stopper 11 has a support portion 101 integrally formed on the bottom plate portion 4 or the side plate portion 3 and a receiving member 103 attached to the support portion 101 via a nut 102. When the other end portion 104 of the accelerator pedal arm 8 abuts, further rotation of the accelerator pedal arm 8 is prohibited when the accelerator pedal arm 8 returns to the initial rotation position.

In this example, the detecting means 12 is
1, a fixed plate 106 fixed to a central recess 105 of the bottom portion 20 and formed with an electric resistor, and a fixed plate 106 at one end.
Slidably in contact with the electric resistor, and a contact 107 whose other end is fixed to the shaft member 7, and electrically detects the rotation of the shaft member 7 in the R direction, Thus, the rotation angle of the accelerator pedal arm 8 is detected, and this electrical detection signal is output to a fuel injection control device for an automobile engine (not shown). The fuel injection control device electronically adjusts the throttle valve opening based on an electrical detection signal from the detection means 12.

In an automobile equipped with the accelerator pedal device 1 described above, when the accelerator pedal 14 is depressed, the accelerator pedal arm 8 resists the elastic force of the coil spring 9 as shown in FIG.
Is rotated clockwise in the R direction, the fuel injection to the engine is promoted by the fuel injection control device based on the electrical detection signal from the detection means 12 for detecting the rotation angle of the accelerator pedal arm 8. When the accelerator pedal arm 8 is rotated counterclockwise in the direction R in FIG. 2 by the elastic force of the coil spring 9 when the accelerator pedal 14 is depressed, the detecting means 12 , The fuel injection to the engine is reduced by the fuel injection control device based on the electrical detection signal and the speed is reduced.

In the accelerator pedal device 1, when the rotating body 28 is rotated in the R direction via the shaft member 7 by the rotation of the accelerator pedal arm 8 from the initial rotation position due to the depression of the pedal, the projection 84 is also moved in the R direction. And the R of the projection 84
As shown in FIG. 10, the movable body 23 integrally having the projection 86 that is in surface contact with the inclined surface 83 by the inclined surface 85 resists the elastic force of the coil spring 26 in the direction of the axis 6 as a result of the rotation in the direction. When the pedal is depressed, the accelerator pedal arm 8 is returned to its original position by the elastic force of the coil spring 9, and the movable body 23 is moved to the position shown in FIG. As shown, it is returned to the original position.

In the accelerator pedal device 1, when the pedal is depressed, the frictional resistance between the inclined surfaces 83 and 85 and the frictional resistance between the surfaces 87 and the fixed surfaces 88 pressed against each other by the gradually increasing elastic force of the coil spring 26. As a result, a gradually increasing resistance (reaction force) is applied to the accelerator pedal arm 8 as appropriate in response to the rotation of the accelerator pedal arm 8 based on the depression of the pedal. When the pedal is released, the frictional resistance between the inclined surfaces 83 and 85 and the frictional resistance between the surfaces 87 and the fixed surfaces 88 become extremely small. Due to the elastic force of the coil spring 9, the rotation is quickly returned to the initial position with a small resistance. Moreover, when the pedal is kept depressed at that position after the pedal is depressed, the frictional resistance between the inclined surface 83 and the inclined surface 85 and the friction between the surface 87 and the fixed surface 88 are obtained even if the pedal depressing force is slightly reduced. The hysteresis characteristic in the relationship between the pedal depression amount and the pedal depression force based on the resistance makes it possible to maintain the rotation position of the accelerator pedal arm 8 at the pedal depression amount, thereby causing early fatigue of the pedal depression foot. Inconvenience can be eliminated. That is, the accelerator pedal device 1
Thus, the range of the pedal depression force that can maintain the rotation position of the accelerator pedal arm 8 at the pedal depression amount at the pedal depression amount can be increased in accordance with the pedal depression amount. The pedal depression amount can be easily maintained constant in accordance with the speed, and inconvenience such as causing early fatigue of the pedal depression can be eliminated. In the accelerator pedal device 1, the detecting means 12 for detecting the rotation angle of the accelerator pedal arm 8 is provided in the housing 2.
Since it is housed in one, it can be installed compactly and a significant space reduction can be expected, and the operation of adjusting the mutual operating position of the damper 10 and the detecting means 12 can be omitted.

Further, according to the accelerator pedal device 1, the frictional resistance between the inclined surface 83 and the inclined surface 85 and the surface 87
The resistance that can be applied to the rotation of the accelerator pedal arm 8 can be determined by the frictional resistance between the accelerator pedal arm 8 and the fixing surface 88, so that the reaction force adjustment with hysteresis characteristics can be performed very easily. By setting the values appropriately, the device can be made extremely compact and can be installed by effectively using a small space.

In addition, according to the accelerator pedal device 1,
Since the coil spring 26 hardly generates a restoring force for returning the accelerator pedal arm 8 to the initial position, the reaction force is not substantially generated on the accelerator pedal arm 8 at the time of constant speed running, and therefore, an early There is the further advantage of not causing fatigue.

Further, according to the accelerator pedal device 1, since the coil spring 26 is disposed between the movable body 23 and the bottom 20 which do not rotate relative to each other, the coil spring 26 may be twisted even when the rotating body 28 rotates. However, the coil spring 26
Inconveniences such as operation failure due to the twisting of the device do not occur.

Further, according to the accelerator pedal device 1, the detecting means 12 includes the shaft member 7 serving also as the rotatable shaft of the damper 10.
, The rotation angle of the accelerator pedal arm 8 is detected without being affected by backlash or the like. 7 also serves as a rotatable shaft, so that the number of parts can be reduced. In addition, since the shaft member 7 is supported at both sides by the side plates 2 and 3, the shaft member 7 can be used.
Can be firmly rotatably supported, and also by appropriately setting the friction coefficient between the other surface 87 of the rotating body 28 and the fixed surface 88, the resistance force applied to the rotation of the accelerator pedal arm 8 can be determined. Therefore, the adjustment of the reaction force having the hysteresis characteristic can be performed very easily.

The axial center 6 of the lid member 34 with respect to the cylindrical portion 31
By adjusting the fixed position in the direction, the coil spring 26
The initial elastic force generated as a result, in other words, the initial resistance can be arbitrarily adjusted and set, and an optimal initial resistance can be obtained.

Further, in the accelerator pedal device 1, since the combined body 111 of the housing 21 and the support frame 5 is an integrally molded product, the number of assembling steps can be reduced, and the length in the direction of the axis 6 can be shortened. It can be easily installed in a narrow space around the arm 8 and can reduce the cost. In addition, by using the combination body 111 made of an integrally molded product such as a synthetic resin, the manufacturing cost can be reduced, and the robustness can be reduced. It can be.

In the accelerator pedal device 1 described above, the housing 21 is integrally provided on the outer surface 46 of the side plate portion 2.
As shown in FIG. 1, the bottom 20 and the cylindrical portion 3 are attached to the pair of side plates 2 and 3 so as to bridge the pair of side plates 2 and 3.
1 may be integrally formed and the housing 21 may be provided, and a combined body 111 of the housing 21 and the pair of side plates 2 and 3 formed of an integrally molded product such as a synthetic resin is used. As a result, the manufacturing cost can be reduced, and the rigidity can be achieved. In addition, since the housing 21 can be supported at both ends, the housing 21 can be firmly supported, and the width in the direction of the axis 6 can be reduced. It becomes more compact.

In the accelerator pedal device 1 described above, the damper 10 and the coil spring 9 are arranged adjacent to each other in the direction of the axial center 6, but instead, as shown in FIG. A coil spring 9 whose other end 16 is locked to the support frame 5 is attached to the arm 8 as shown in FIG.
May be wound around the cylindrical portion 31 of the housing 21 and disposed. According to the accelerator pedal device 1 shown in FIG. 12, the width of the coil spring 9 and the combination body 111 in the direction of the axis 6 can be shortened, so that the accelerator pedal device 1 can be mounted on the vehicle body with a small mounting space. it can. In FIG. 12,
The accelerator pedal device 1 may be configured by omitting the side plate 2 of the support frame 5.

In the accelerator pedal device 1 described above, the shaft member 7 doubles as the rotatable shaft of the damper 10.
13 and 14, a damper 1 having a rotatable shaft 122 having an axis 121 parallel to the axis 6 of the shaft member 7 and extending into a housing 21 is provided.
0, and in this case, between the accelerator pedal arm 8 and the rotatable shaft 122, the accelerator pedal arm 8 is turned from the initial turning position and turned to the initial turning position, that is, The rotation in both directions of the R direction is performed by the rotatable shaft 12.
The accelerator pedal device 1 is configured such that a transmission mechanism 123 for transmitting the rotation to the motor 2 is provided, and the detection means 12 built in the housing 21 detects the rotation angle of the rotatable shaft 122 as the rotation angle of the accelerator pedal arm 8. May be.

The transmission mechanism 123 of the accelerator pedal device 1 shown in FIG. 13 and FIG.
A link member 132 fixed to the link member 22;
The space 134 formed by the two forked other ends 133
, And slidably engages with the other end 133 of the forked shape, and the other end 104 of the accelerator pedal arm 8.
And a columnar engaging member 135 fixed to the main body.

In the accelerator pedal device 1 shown in FIG. 13 and FIG. 14, when the accelerator pedal arm 8 is turned in the R direction from the initial turning position by depressing the accelerator pedal 14, the link is provided via the engaging member 135. The member 132 is the axis 1
14, that is, in the counterclockwise direction in FIG.
As a result, a resistance force (reaction force) which gradually increases in response to the rotation based on the pedal depression is applied to the accelerator pedal arm 8 via the transmission mechanism 123, and after the pedal is depressed, the damper 1
Due to the hysteresis characteristic in the relationship between the pedal depression amount and the pedal depression force of 0, the rotation position of the accelerator pedal arm 8 can be maintained even if the pedal depression force is slightly reduced by the pedal depression amount, and the transmission mechanism 123 and the freely rotatable. The rotation angle of the accelerator pedal arm 8 can be detected by the detection means 12 via the shaft 122. In the accelerator pedal device 1 shown in FIGS. 13 and 14,
When the accelerator pedal arm 8 is rotated toward the initial rotation position by the elastic force of the coil spring 9 when the accelerator pedal 14 is depressed, the link member 132 also moves as shown in FIG.
Is forcibly rotated clockwise.

FIGS. 13 and 1 having the transmission mechanism 123
According to the accelerator pedal device 1 shown in FIG.
The rotation angle of the accelerator pedal arm 8 can be detected more finely or coarsely by appropriately setting the transmission ratio related to rotation-rotation in 3, the detection resolution can be increased or decreased, and the rotation angle is given to the accelerator pedal arm 8. The frictional force can be increased or decreased, and the rate of increase of the frictional resistance can be increased or decreased. Further, according to the transmission mechanism 123 having the link member 132 with the forked end 133, the rotatable shaft 122 has As a result of transmitting the rotation of the accelerator pedal arm 8 to the initial rotation position in addition to the rotation of the accelerator pedal arm 8 from the initial rotation position, even if the accelerator pedal arm 8 is returned to the initial rotation position. Detecting means 12
Can be avoided.

In the transmission mechanism 123, the engagement member 135 is disposed in the space 134 formed by the forked end 133 of the link member 132, and the rotatable shaft 122 is moved to the initial rotation position of the accelerator pedal arm 8. Is also transmitted, so that the rotation of the rotatable shaft 122 is
While being restricted by the rotation of the accelerator pedal arm 8 from the initial rotation position via the transmission mechanism 123, it is also restricted by the rotation of the accelerator pedal arm 8 to the initial rotation position via the transmission mechanism 123, and The rotation of the accelerator pedal arm 8 causes the rotation of the rotatable shaft 122 via the transmission mechanism 123.
Of the accelerator pedal arm 8 as well as the rotation of the rotatable shaft 122 to the initial rotation position via the transmission mechanism 123 as well.
From the initial rotation position and the accelerator pedal arm 8
The characteristic of the damper 10 is imparted to each of the rotations of the damper 10 to the initial rotational position, so that the hysteresis characteristic of the damper 10 is imparted to the accelerator pedal arm 8 as it is.

As shown in FIGS. 13 and 14, the accelerator pedal arm 8 and the stopper 11 are provided on the side plate portion 2 side, while the housing 21 is provided integrally on the outer surface of the side plate portion 3 to support the housing 21. The combination body 111 with the frame 5 may be formed from an integrally molded product. The support 111 may be included in the combination body 111 made of an integrally molded product.

In the accelerator pedal device 1 shown in FIGS. 13 and 14, the link member 13 having the bifurcated other end 133 is provided.
The transmission mechanism 123 is formed by using the link member 142. Alternatively, as shown in FIGS. 15 and 16 and FIGS. 17 to 19, a link member 142 having one end 141 fixed to the rotatable shaft 122 is used. And the other end 143 of the link member 142
Is attached to the accelerator pedal arm 8
The transmission mechanism 123 may be constituted by using an engagement member 145 preferably made of a roller, which is movably rolling-engaged with the other end portion 104. Transmission mechanism 12 shown in FIGS. 15 and 16
3 and also in the transmission mechanism 123 shown in FIGS. 17 to 19, the rotation angle of the accelerator pedal arm 8 can be detected more finely or roughly by appropriately setting the transmission ratio related to the rotation, and the detection resolution can be increased. Also, the friction resistance applied to the accelerator pedal arm 8 can be increased or decreased, and the rate of increase of the friction resistance can be increased or decreased.

The transmission mechanism 123 of the accelerator pedal device 1 shown in FIGS. 15 and 16 and the transmission mechanism 123 of the accelerator pedal device 1 shown in FIGS. 17 to 19 become a one-way clutch. Cannot be transmitted to the rotatable shaft 122 at the time of rotation of the coil spring 9 to the initial rotation position, in this case, the inclined surface 83 and the inclined surface 83 based on the elastic extension force of the coil spring 26 Due to the return force via 85, the rotatable shaft 112 is rotated and returned to the initial rotation position. Also,
In the transmission mechanism 123 shown in FIGS. 15 and 16 and FIGS. 17 to 19, when the accelerator pedal arm 8 rotates to the initial rotation position, the frictional resistance generated by the damper 10 is applied to the accelerator pedal arm 8. 15 and FIG. 16 and FIG.
In the case of the accelerator pedal device 1 shown in FIG. 19 to FIG. 19, when the pedal is depressed, the depression force of the accelerator pedal 14 is released at the desired position and after the pedal is depressed, and the accelerator pedal arm 8 is initially rotated. The characteristics when rotating to the moving position are different from those of the other accelerator pedal devices 1 described above.

Instead of incorporating the detecting means 12 in the housing 21, FIGS. 15 and 16 and FIGS.
As shown in each of FIGS.
The accelerator pedal device 1 may be arranged outside.

In the accelerator pedal device 1 shown in FIGS. 15 and 16, the detecting means 12 includes a case 150 attached to the side plate portion 2 by bolts 149 and the like, and a fixing plate similar to the above-described fixing plate disposed in the case 150. A contact, a rotatable shaft 151 to which the contact is fixed and rotatably supported by the case 150, and a transmission mechanism 152 for transmitting the rotation of the accelerator pedal arm 8 to the rotatable shaft 151 are provided. I have. The transmission mechanism 152 is configured similarly to the transmission mechanism 123 shown in FIGS. 13 and 14, and includes a link member 154 having one end 153 fixed to the rotatable shaft 151, and a forked other end 156 of the link member 154. And a columnar engaging member 158 slidably engaged with the other end 156 of the fork and slidably engaged with the other end 104 of the accelerator pedal arm 8. I have it.

The detection means 12 shown in FIG. 15 and FIG.
Rotatable shaft 1 by rotation of accelerator pedal arm 8 in the R direction
51 is rotated via the transmission mechanism 152, the rotation of the rotatable shaft 151 is detected and the accelerator pedal arm 8 is rotated.
Is detected, and the electrical detection signal from the detection means 12 is used for controlling the fuel injection to the engine in the fuel injection control device in the same manner as described above.

The detection means 12 shown in FIGS.
The rotation angle of the shaft member 7 is directly detected, whereby the rotation angle of the accelerator pedal arm 8 is detected. The detecting means 12 shown in FIGS.
150 attached to the case by bolts 149 and the like
And a fixed plate and a contact similar to those described above disposed in the case 150. The shaft member 7 also serves as a rotatable shaft of the detection means 12, and the shaft member 7 The contact is fixed.

According to the detecting means 12 shown in FIGS. 17 to 19, the rotation angle of the accelerator pedal arm 8 can be detected as it is without being affected by backlash or the like.
Since the shaft member 7 also serves as a rotatable shaft, the number of parts can be reduced.

In the accelerator pedal device 1 described above, the support frame 5 having the pair of side plates 2 and 3 and the bottom plate 4
The housing 21 is formed integrally with the side plate portion 2 or 3 of the support frame 5 using the above, and the combined body 111 of the housing 21 and the support frame 5 is formed as an integrally molded product. As shown in FIGS. 20 to 22, the support frame 5 is provided with only the bottom plate portion 4, and the housing 21 is formed integrally with the bottom plate portion 4, whereby the combination of the housing 21 and the support frame 5 is achieved. The body 111 may be an integrally formed product formed integrally.

In the accelerator pedal device 1 shown in FIGS. 20 to 22, the damper 10 has a housing 21 and a shaft extending into the housing 21 and used as a rotatable shaft, similarly to the damper 10 shown in FIG. A member 7 and a housing 21 arranged concentrically with the shaft member 7 are movable in the direction of the axis 6 with respect to the housing 21 and
In the peripheral direction, that is, in the R direction, an annular plate-shaped movable body 23 fixedly arranged, one end 24 abuts on the bottom 20 of the housing 21, and the other end 25 abuts on the movable body 23. A pair of coil springs, preferably a pair of compression coil springs 160 and 161 as spring means disposed between the movable body 23 and the bottom portion 20 inside the housing 21 and the housing 21 facing the movable body 23 and the housing 21 A rotating body 28 rotatably arranged in the R direction with respect to the shaft member 7 and rotated by rotation of the shaft member 7;
1, the movable body 23 is separated from the rotating body 28 in the direction of the axis 6 against the elastic force of the coil springs 160 and 161 when the rotating body 28 rotates in the R direction. And a frictional resistance generating means 29 for generating a gradually increasing frictional resistance by increasing the spring reaction force of the coil springs 160 and 161;
An annular lid member 34 fastened and fixed to one end 17 of the housing 21 is provided. The accelerator pedal arm 8 is fixed to one end of the shaft member 7.
Is rotatably supported on the lid member 34 at one end in the R direction via a sliding bearing 162, and is rotatably supported on the bottom portion 20 of the housing 21 at the other end in the R direction, and penetrates the housing 21 and the lid member 34. The coil springs 160 and 161 having different elastic coefficients from each other
So as to separate from the bottom 20 in the direction of the axis 6,
It is elastically contracted and arranged concentrically.

In the accelerator pedal device 1 shown in FIGS. 20 to 22, when the accelerator pedal arm 8 is rotated in the R direction from the initial rotation position by depressing the pedal, the rotating body 28 is moved in the R direction via the shaft member 7. When rotated, the protrusion 84 also becomes R
The movable body 23 is rotated in the direction R, and the movable body 23 resists the elastic force of the coil springs 160 and 161 in the direction of the axis 6 and contracts the coil springs 160 and 161 as shown in FIG. When the pedal is moved toward the bottom portion 20 and the pedal is released, the accelerator pedal arm 8 is returned to the original position by the elastic force of the coil springs 160 and 161 without the assistance of the coil spring 9,
Similarly, the movable body 23 is returned to the original position as shown in FIG. As described above, in the accelerator pedal device 1 shown in FIGS. 20 to 22, the coil springs 160 and 161 urge the accelerator pedal arm 8 to rotate to the initial rotation position. Can be further reduced, and in addition, since the pair of coil springs 160 and 161 have different elastic coefficients from each other, one of the coil springs can be used for fine adjustment, and the design and adjustment of the resistance force can be achieved. Can be done easily.

For example, in the accelerator pedal device 1 shown in FIGS. 20 to 22, the housing 21 is formed integrally with the bottom plate portion 4 so that the bottom portion 20 is adjacent to the accelerator pedal arm 8, and the lid is replaced with the bottom portion 20. The member 2 serves as a spring receiver for the coil springs 160 and 161 using the member 34.
It may be fastened and fixed to the other end 165 of the first.

[0088]

According to the present invention, it is possible to prevent the accelerator pedal from being excessively depressed, and according to the pedal depression amount, the range of the pedal depression force in which the rotational position of the accelerator pedal arm can be kept constant at the pedal depression amount. In addition to being able to reduce the number of assembly steps, the axial length can be shortened, and it can be easily installed even in a narrow space around the accelerator pedal arm, and the cost can be reduced. Therefore, it is possible to provide a suitable damper.

[Brief description of the drawings]

FIG. 1 is a front partial cross-sectional view of an example of a preferred embodiment of the present invention.

FIG. 2 is a partial left side sectional view of the example shown in FIG. 1;

FIG. 3 is an explanatory view taken along line III-III shown in FIG. 1;

FIG. 4 is a left side view of a movable body of the damper shown in FIG.

5 is a cross-sectional view taken along line VV shown in FIG. 4 in which protrusions, recesses, and steps of the frictional resistance generating means are omitted.

6 (a) is a right side view of the movable body of the damper shown in FIG. 1, and FIG. 6 (b) shows a projection, a recess and a step of a frictional resistance generating means integrally formed with the movable body. FIG.

7 (a) is a left side view of a rotating body of the damper shown in FIG. 1, and FIG. 7 (b) shows a projection, a recess and a step of a frictional resistance generating means integrally formed with the rotating body. FIG.

FIG. 8 is a right side view of a rotating body of the damper shown in FIG.

9 is a cross-sectional view taken along the line IX-IX shown in FIG. 8, in which protrusions, recesses, and steps of the frictional resistance generating means are omitted.

FIG. 10 is an operation explanatory diagram of the example shown in FIG. 1;

FIG. 11 is a partial front sectional view of another example of the preferred embodiment of the present invention.

FIG. 12 is a front view of another example of the preferred embodiment of the present invention.

FIG. 13 is a partial front sectional view of still another example of the preferred embodiment of the present invention.

14 is a partial left side sectional view of the example shown in FIG.

FIG. 15 is a front partial cross-sectional view of still another example of the preferred embodiment of the present invention.

16 is a left side view of the example shown in FIG.

FIG. 17 is a front partial cross-sectional view of still another example of the preferred embodiment of the present invention.

18 is a left side view of the example shown in FIG.

FIG. 19 is a right side view of the example shown in FIG. 17;

FIG. 20 is a front partial sectional view of still another example of the preferred embodiment of the present invention.

FIG. 21 is a right side view of the example shown in FIG. 20.

FIG. 22 is an operation explanatory diagram of the example shown in FIG. 20;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Accelerator pedal device of car 2, 3 Side plate part 4 Bottom plate part 5 Support frame 7 Shaft member 8 Accelerator pedal arm 9 Coil spring 10 Damper 21 Housing

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Katsumi Kumazawa, Inventor 8 Kirihara-cho, Fujisawa-shi, Kanagawa OILES INDUSTRY CO., LTD. F term in Fujisawa Plant (reference) 3D037 EB05 3G065 CA22 CA23 DA04 EA07 JA04 JA09 JA11 JA13 KA02 3J070 AA32 BA15 BA17 BA71 CB11 CD15 DA02 EA01

Claims (28)

[Claims] An accelerator pedal arm which is urged to rotate to an initial rotation position, and a damper which generates a frictional resistance that gradually increases as the accelerator pedal arm rotates from the initial rotation position. , The accelerator pedal arm,
At least the frictional resistance generated by the damper in the rotation from the initial rotation position is provided,
The damper has a housing and is fixed to the vehicle body via a support frame, and a combined body of the housing and the support frame is an accelerator pedal device for an automobile, which is formed as an integrally molded product. . 2. The support frame includes at least a pair of side plates, and a bottom plate formed by bridging the pair of side plates and integrally forming the side plates. The housing includes one side plate. 2. The accelerator pedal device for an automobile according to claim 1, wherein the accelerator pedal device is provided on an outer surface of the section. 3. The support frame includes at least a pair of side plates and a bottom plate formed by bridging the pair of side plates and integrally forming the side plates. The housing includes a pair of side plates. The vehicle accelerator pedal device according to claim 1, wherein the accelerator pedal device is provided so as to bridge the parts. 4. The accelerator pedal device according to claim 1, wherein the support frame includes a bottom plate, and the housing is provided integrally with the bottom plate. 5. The damper according to claim 1, wherein the damper has a rotatable shaft extending in the housing, and generates a frictional force that gradually increases as the rotatable shaft rotates from an initial rotation position. The accelerator pedal device for an automobile according to any one of claims 4 to 7. 6. A transmission mechanism interposed between an accelerator pedal arm and a rotatable shaft and further transmitting a rotation of the accelerator pedal arm from at least an initial rotation position to the rotatable shaft. 6. The damper according to claim 5, wherein the damper applies, to the accelerator pedal arm via a transmission mechanism, a frictional resistance force gradually increased by rotation of the rotatable shaft following rotation of the accelerator pedal arm from the initial rotation position. An accelerator pedal device for an automobile according to the above. 7. The transmission mechanism transmits the rotation of the accelerator pedal arm to the initial rotation position to the rotatable shaft in addition to the rotation of the accelerator pedal arm from the initial rotation position. Item 7. An accelerator pedal device for an automobile according to Item 6. 8. A transmission mechanism comprising: a link member having one end fixed to a rotatable shaft; and an engagement member provided at the other end of the link member and movably engaged with an accelerator pedal arm. The vehicle accelerator pedal device according to claim 6 or 7, further comprising: 9. The transmission mechanism is disposed in a space formed by a link member having one end fixed to the rotatable shaft and having a forked other end, and a forked other end of the link member. 8. The accelerator pedal device for an automobile according to claim 6, further comprising: an engaging member movably engaged with the forked other end and fixed to an accelerator pedal arm. 10. The transmission mechanism according to claim 6, wherein the transmission mechanism transmits the frictional resistance generated by the damper to the accelerator pedal arm when the accelerator pedal arm rotates to the initial rotation position. An accelerator pedal device for a motor vehicle according to claim 1. 11. A shaft member rotatably supported by a support frame, and a coil spring for urging the accelerator pedal arm to an initial rotation position, wherein the accelerator pedal arm is attached to the shaft member. Claims 1 to 10
The accelerator pedal device for an automobile according to any one of claims 1 to 4. 12. The vehicle accelerator according to claim 11, wherein the coil spring is wound around the housing, with one end thereof being locked to the accelerator pedal arm and the other end being respectively locked to the support frame. Pedal device. 13. A shaft member rotatably supported by a support frame, and a coil spring for urging the accelerator pedal arm to an initial rotation position, wherein the accelerator pedal arm is attached to the shaft member. The rotatable shaft is
2. The shaft according to claim 1, wherein the shaft has an axis parallel to the axis of the shaft member.
The accelerator pedal device for a motor vehicle according to any one of claims 0 to 10. 14. The vehicle accelerator according to claim 13, wherein the coil spring has one end fixed to the accelerator pedal arm and the other end fixed to the support frame, and is wound around the housing. Pedal device. 15. The accelerator pedal device according to claim 5, wherein the accelerator pedal arm is fixed to a rotatable shaft. 16. An accelerator pedal device for an automobile according to claim 1, further comprising a detecting means for detecting a rotation angle of an accelerator pedal arm. 17. The accelerator pedal device for an automobile according to claim 16, wherein the detection means is built in the housing. 18. A detecting means is provided between another rotatable shaft and an accelerator pedal arm and another rotatable shaft, and transmits rotation of the accelerator pedal arm to the other rotatable shaft. 17. The accelerator pedal device for an automobile according to claim 16, comprising a transmission mechanism for detecting the rotation angle of another rotatable shaft as the rotation angle of the accelerator pedal arm. 19. The other transmission mechanism includes another link member having one end fixed to another rotatable shaft and having a bifurcated other end, and a bifurcated other end of the other link member. 19. The vehicle according to claim 18, further comprising: a second engaging member fixedly attached to the accelerator pedal arm and movably engaged with the other end of the forked portion. Accelerator pedal device. 20. The accelerator pedal device for an automobile according to claim 15, wherein the detecting means comprises an optical, magnetic or electric resistance detector. 21. A frictional resistance generated by a damper is applied to the accelerator pedal arm in addition to the rotation of the accelerator pedal arm from the initial rotation position and also to the rotation of the accelerator pedal arm to the initial rotation position. 21. The method according to claim 1, wherein
The accelerator pedal device for an automobile according to any one of claims 1 to 4. 22. A damper which is movable in the axial direction and is immovable in the direction around the axis, and is disposed rotatably around the axis facing the movable body. A rotating body that is rotated based on the rotation of the accelerator pedal arm, spring means for elastically urging the movable body toward the rotating body, and movable against the elastic force of the spring means when the rotating body rotates. Frictional force generating means for generating a gradually increasing frictional resistance force by increasing the spring force of the spring means by separating the body from the rotating body in the axial direction, and comprising a movable body and a rotating body. The spring means and the frictional resistance generating means are each incorporated in a housing.
The accelerator pedal device for an automobile according to any one of claims 1 to 7. 23. A frictional resistance generating means includes a projection integrally formed on one surface of the rotating body facing the movable body so as to project in the axial direction toward the one surface of the movable body. ,
On one surface of the movable body facing the rotating body, there is provided a projection integrally formed so as to protrude toward the one surface of the rotating body in the axial direction, and both projections are 23. The accelerator pedal device for a motor vehicle according to claim 22, adapted to contact. 24. A frictional resistance generating means, comprising: an inclined surface formed on one surface of the rotating body facing the movable body; and a slope formed on one surface of the movable body facing the rotating body. 24. The accelerator pedal device for an automobile according to claim 22 or 23, further comprising an inclined surface that makes surface contact. 25. The accelerator pedal device for an automobile according to claim 22, wherein the frictional resistance generating means has a fixed surface that is in surface contact with the other surface of the rotating body. 26. The spring means comprises at least a pair of concentrically arranged coil springs.
The accelerator pedal device for an automobile according to any one of claims 1 to 4. 27. The accelerator pedal device according to claim 26, wherein the at least one pair of coil springs has different elastic coefficients from each other. 28. A damper used for an accelerator pedal device for an automobile according to claim 1. Description: