JPH07191774A - Operating pedal device adjustable forward and backward - Google Patents

Abstract

PURPOSE:To provide a simple and compact operating pedal device in which a pedal pad can be adjusted forward and backward smoothly without necessitating large space at the time of mounting it to a vehicle. CONSTITUTION:A stepping member 26 provided with the pedal pad 32 is arranged movably in the longitudinal direction of the vehicle at the lower end part of a pedal arm 18 fitted rotatably to a bracket 14 through a supporting shaft 16, and when a rotating lever 36 fitted to the pedal arm 18 rotably around a pin 34 is rotated around the pin relatively to the pedal arm 18 by a forward/ backward adjusting means 50, the stepping member 26 is moved in the longitudinal direction of the vehicle. The rod 42 of a brake booster 40 is connected to the rotating lever 36, and since this connection part is displaced as accompanying the rotation of the rotating lever 36, a lever ratio L2a/L1a is kept nearly constant inspite of the forward/backward adjustment of the stepping member 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle operation pedal device such as a brake pedal and an accelerator pedal, and more particularly to an improvement of an operation pedal device capable of moving the position of a pedal pad in the vehicle front-rear direction. Is.

[0002]

2. Description of the Related Art A bracket fixed to a vehicle body is rotatably provided around a uniaxial center, and a pedal pad is depressed to rotate the pedestal from its original position to a uniaxial center so that a predetermined distance can be obtained. A vehicle operation pedal device for pressing or pulling an action member, such as a brake pedal or an accelerator pedal,
Although a clutch pedal is widely known, one of such vehicle operation pedal devices is proposed in which the position of the pedal pad can be moved in the front-rear direction of the vehicle. For example, the devices described in JP-A-63-49528 (conventional example 1), JP-A-2-39214 (conventional example 2) and JP-B-62-5700 (conventional example 3) are examples thereof. According to such an operation pedal device, since the position of the pedal pad can be adjusted to an optimum position according to the body shape and taste of the driver, the driving operation becomes easy.

In the above-mentioned prior art examples 1 and 2, the pedal pad is moved in parallel along a pair of elongated holes.
The posture and height position of the pedal pad are maintained substantially constant, and by displacing the support portion of the bracket and the connecting portion of the operating member, which are the uniaxial center, with the forward and backward movement of the pedal pad, The ratio of the distance to the pedal pad to the distance from the uniaxial center to the connecting portion of the action member (hereinafter referred to as the lever ratio) is set to be substantially constant, and the required stepping force does not change even if the pedal pad is moved back and forth. It is like this. In Conventional Example 3, the pedal pad is moved in parallel along the elongated hole, and the posture and height position of the pedal pad are maintained substantially constant.

[0004]

However, in the conventional examples 1 and 2, the number of parts is large, the structure is complicated and large-scaled, and the assembly is troublesome and the cost is high. Although the conventional example 3 has a simple structure, it is locked by fitting the notch and the projection, so that the front-back adjustment is stepwise and the pedal pad sways up and down during the adjustment, and the adjustment cannot be performed smoothly. At the same time, since the lever ratio changes with the movement of the pedal pad, the required stepping operation force changes. Further, in all of these conventional examples 1 to 3, since the stepping member including the pedal pad is directly moved in the front-rear direction of the vehicle by the front-rear adjusting means, it is possible to adjust using a screw shaft or the like. Requires a drive device having a length equal to or longer than the movement stroke of the pedal pad, which requires a relatively large space in the front-rear direction, which is not preferable to arrange in a narrow space in front of the driver's seat.

The present invention has been made in view of the above circumstances, and an object thereof is to easily move a pedal pad without requiring a large space when mounting it on a vehicle. Another object is to provide a compact operation pedal device.

[0006]

In order to achieve such an object, a first aspect of the present invention is to provide a bracket fixed to a vehicle body so as to be rotatable about an axis, and a pedal pad is depressed. The operation pedal device is capable of moving the position of the pedal pad in the front-rear direction of the vehicle while pressing or pulling a predetermined acting member by being rotated from its original position around its one axis. And (a) a pedal arm rotatably attached to the bracket about the uniaxial center, and (b) a lower end portion of the pedal arm of the vehicle in a state where the pedal arm is held in the original position. It is arranged so that it can move in the front-back direction,
A stepping member provided with the pedal pad, and (c) rotatably connected at one end to the pedal arm about an axis substantially parallel to the one axis and at the other end to the stepping member. A rotation lever that is engaged with the vehicle in the front-rear direction so that it cannot move relative to the pedal arm, and is rotated relative to the pedal arm to move the stepping member in the vehicle front-rear direction; and (d) the rotation lever. And the pedal arm, the rotation lever and the pedal arm are always integrally rotated about the uniaxial center, and the rotation lever and the pedal arm are connected differently. Front and rear adjusting means for positioning at a certain angle to change the position of the stepping member, and rotating the acting member around the axis substantially parallel to the one axis with respect to the pedal arm or the rotating lever. Characterized by being linked.

[0007]

In the operation pedal device capable of adjusting the front-back direction, the stepping member arranged at the lower end portion of the pedal arm is changed by changing the connecting angle between the rotating lever and the pedal arm. Is moved in the front-rear direction of the vehicle, and the front-rear position of the pedal pad can be adjusted while maintaining the posture and height position of the pedal pad substantially constant. In that case, since it is only necessary to rotate the rotary lever relative to the pedal arm, the device is simple and compact, and for example, the front-rear adjusting means having a function of relatively rotating the both is connected to the connecting portion. If it is arranged in the vicinity of, the pedal pad can be largely moved with a small turning stroke, and the front-rear adjusting means can rotate the rotating lever relative to the pedal arm. Since it is not necessary to dispose in the direction, the installation space in the vehicle front-rear direction can be reduced.

[0008]

A second aspect of the present invention is the operation pedal device according to the first aspect of the present invention, which is adjustable in the front-rear direction, regardless of a change in a connecting angle between the rotating lever and the pedal arm. The action member is connected to a predetermined portion of the rotary lever so that the above-mentioned action is substantially constant.

[0009]

The action and effect of the second aspect of the invention That is, the action member is connected to a predetermined portion of the turning lever, and the action member is actuated when the turning lever is turned relative to the pedal arm during the front-back adjustment of the pedal pad. The lever ratio is maintained substantially constant regardless of the change in the distance from the uniaxial center to the pedal pad due to the front / rear adjustment of the pedal pad, by changing the distance between the connecting portion of the Axis and the uniaxial center that is the center of rotation of the pedal arm. As a result, even if the pedal pad is adjusted back and forth, the required stepping operation force can be maintained substantially constant. Moreover, since the turning lever is turned relative to the pedal arm when adjusting the front and rear of the pedal pad, the action member is simply connected to a predetermined portion of the turning lever, so that the adjustment lever and the pivot pin are connected. As compared with the prior art examples 1 and 2 in which the lever ratio is maintained substantially constant by using, for example, the device is extremely simple in construction.

The lever ratio does not have to be completely constant, and when the distance between the pedal pad and the uniaxial center increases as the front and rear is adjusted, the distance between the connecting portion of the operating member and the uniaxial center increases. If the distance between the pedal pad and the uniaxial center becomes smaller as the front / rear adjustment is made, the distance between the connecting portion of the operating member and the uniaxial center will also become smaller, which will have a temporary effect. can get.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is an example of a case where the present invention is applied to a vehicle brake pedal device 10 as an operation pedal device, and FIG. 2 is a perspective view showing an exploded main part of the brake pedal device 10. The brake pedal device 10 is arranged on a bracket 14 fixed to the vehicle body 12, and the support shaft 1 is attached to the bracket 14.
The pedal arm 18 is provided so as to be rotatable around the axis of the support shaft 16 via the shaft 6. The shaft center of the support shaft 16 rotatably supporting the pedal arm 18 corresponds to one shaft center, and the support shaft 16 is attached to the bracket 14 in a posture in which the shaft center is substantially parallel to the width direction of the vehicle. It is like this. When the pedal arm 18 is brought into contact with the stopper screw 20 provided on the bracket 14, the left rotation end or the original position in FIG. 1 is regulated. It is designed to extend to.

A guide portion 22 is integrally provided at the tip end portion of the pedal arm 18 and extends rearward of the vehicle, that is, to the right in FIG. An elongate hole 24 is formed in the and a stepping member 26 is attached so as to be movable in the vehicle longitudinal direction. The stepping member 26 is made of a plate material that is bent in a substantially U-shape so that the upper portion is opened, and the pair of pins 28 are formed with the guide portion 22 positioned inside the U-shape. , 30 are attached through the elongated holes 24, so that they are supported by the guide portion 22 via the pins 28, 30 thereof. Pins 28,3
The separation distance of 0 is shorter than the length dimension of the long hole 24, and the pins 28 and 30 thereof are moved in the long hole 24.
The stepping member 26 is translated in the front-rear direction of the vehicle. A pedal pad 32 that is operated by a driver is integrally attached to one end of the stepping member 26, that is, the right end of FIG. 1 located on the rear side of the vehicle. 1 shows a state in which the stepping member 26 is located at the front end where the pin 28 on the vehicle front side comes into contact with the end of the slot 24, and FIG. 3 shows that the pin 30 on the vehicle rear side shows the end of the slot 24. The stepping member 26 is located at the rear end that abuts against the.

A pivot lever 36 is attached to the pedal arm 18 at an intermediate portion thereof so as to be rotatable about a pin 34 parallel to the support shaft 16. Rotating lever 3
6 extends downward so as to substantially overlap with the pedal arm 18, and has a vertically elongated slot 38 at its tip.
Is formed so that the pin 28 can be inserted therethrough, and the pin 28 is engaged with the stepping member 26 so as not to be relatively movable in the vehicle front-rear direction. Therefore, by rotating the rotating lever 36 relative to the pedal arm 18 around the pin 34, the stepping member 26 is moved in the vehicle front-rear direction.

At the upper end of the rotating lever 36, the vehicle body 1
2 is a rod 4 as an operating member protruding from a brake booster 40 arranged on the opposite side of the bracket 14.
2 is a pin 4 parallel to the support shaft 16 via the clevis 44
It is connected so as to be capable of relative rotation around 6. Rod 42
The connecting portion, that is, the pin 46, is set at a position higher than the pin 34 regardless of the front and rear position of the stepping member 26, and the rod 42 is urged by the brake booster 40 in the protruding direction to rotate. A rightward moment of the pin 34 in FIG. 1 is always applied to the lever 36. Further, the pedal arm 18 is provided with a front / rear adjusting means 50 so as to define a turning end when the turning lever 36 turns in the clockwise direction in FIG. 1 with respect to the pedal arm 18. Has become. A right-handed moment acts on the rotary lever 36 by the rod 42, and a right-handed moment acts via the pin 28 when the pedal pad 32 is stepped on.
The right-handed rotation end is defined by this, so that it is always held so as not to be relatively rotatable with respect to the pedal arm 18, and when the pedal pad 32 is depressed, the support shaft is integrated with the pedal arm 18. The rod 42 is rotated clockwise to push the rod 42 into the brake booster 40. In this embodiment, the pedal arm 18 is returned to the original position where it abuts on the stopper screw 20 by the rod 42. However, a return spring is provided between the bracket 14 and the pedal arm 18 if necessary. You can also

The forward / backward adjusting means 50 is spline-fitted to an electric motor 52 which is rotationally driven in both forward and reverse directions by operating a switch (not shown) provided in the driver's seat, and a rotary shaft of the electric motor 52. Screw shaft 54,
The pedal arm 18 is screwed onto the screw shaft 54.
When the screw shaft 54 is rotated by the electric motor 52, the screw shaft 54 protrudes in the axial direction and is retracted. The tip end of the screw shaft 54 is brought into contact with the upper end portion of the rotating lever 36, whereby the clockwise rotating end of the rotating lever 36 is defined, and the screw shaft 54 protrudes. By being pulled in, the turning end, that is, the connection angle of the turning lever 36 with respect to the pedal arm 18 is changed, and accordingly the stepping member 26 is moved in the front-rear direction of the vehicle to move the front end and the rear end. It is positioned at any position between and.

Here, when the stepping member 26 is moved, the distance L2 from the shaft center of the support shaft 16 to the pedal pad 32 changes. With the change in the distance, the shaft center of the support shaft 16 moves to the rod 42. The distance L1 to the connecting portion, that is, the pin 46 also changes, and the lever ratio L2 / L1 hardly changes regardless of the movement of the stepping member 26. That is, the distance L when the stepping member 26 is located at the front end
The distance L2b when the stepping member 26 is located at the rear end is larger than 2a, but the distance L1 is larger than L1a in L1b, and L2a / L1a≈L2b /
The position of the pin 46 is determined so as to be L1b. Specifically, as the stepping member 26 moves back and forth, the turning lever 36 is turned around the pin 34,
The distance L1 also changes accordingly, but the amount and direction of the change vary depending on the distance between the pins 34 and 46 and the position of the pin 46 around the pin 34, so the lever ratio L2a / L1a≈L2b / L1b. So that
In this embodiment, the upper left position of the pin 34, that is, the pin 34
The rod 42 is connected by arranging the pin 46 at a position deviated counterclockwise about the pin 34 from the line segment connecting the support shaft 16 and the support shaft 16.

As described above, the brake pedal device 10 of the present embodiment changes the connection angle between the rotary lever 36 and the pedal arm 18 by the front-rear adjusting means 50 by operating the switch provided in the driver's seat. The stepping member 26 disposed at the lower end of the arm 18 is translated in the front-rear direction of the vehicle, and the front-rear position of the pedal pad 32 is adjusted while maintaining the posture and height position of the pedal pad 32 substantially constant. it can. In that case, pedal arm 1
Since the turning lever 36 only needs to be turned relative to 8, the device is simple and compact, and
The front-rear adjusting means 50 includes the pin 34 of the rotating lever 36.
Since the stepping member 26 can be moved from the front end to the rear end with a small protruding stroke, the front-rear adjusting means 50 can be made smaller than in the case of directly moving the stepping member 26. Can be converted. Moreover, the arrangement posture of the front-rear adjusting means 50 can be arbitrarily determined, and in the present embodiment, since it is arranged obliquely downward as apparent from FIG. 1, the arrangement space in the vehicle front-rear direction is significantly reduced. Become.

Further, in the present embodiment, the rod 42 is connected to a predetermined portion of the rotation lever 36, and when the rotation lever 36 is rotated relative to the pedal arm 18 when the pedal pad 32 is adjusted back and forth, the distance is increased. Distance L corresponding to changes in L2
The change of 1 causes the lever ratio L2 / L1 to be maintained substantially constant, so that the pedal pad 32
The required stepping force is maintained at a substantially constant level even when is adjusted back and forth. Moreover, since the rotation lever 36 is relatively rotated with respect to the pedal arm 18 when the pedal pad 32 is adjusted forward and backward, the rod 42 is simply connected to a predetermined portion of the rotation lever 36. As compared with the case of using the adjusting lever or the pivot pin as in the conventional examples 1 and 2, the device is configured very easily.

Next, another embodiment of the present invention will be described. FIG. 4 shows the rod 42 and the turning lever 36 in the above-mentioned embodiment.
In the rotating lever 36, a long hole 60 that is long in the direction of approaching and separating from the pin 34 is formed, and a long hole 6 that is long in the direction of approaching and separating from the support shaft 16 is formed.
2 on the pedal arm 18 and pin 4 on the clevis 44
6 are threaded through their slots 60 and 62. In this case, the rotation lever 36 and the pedal arm 18
The change characteristic of the distance L1 due to the relative rotation with respect to
Since the shape can be arbitrarily set according to the shape of 62, the lever ratio L2 / L1 can be made completely constant regardless of the front-back adjustment of the pedal pad 32. It is also possible to prevent the amount of protrusion of the rod 42 from the brake booster 40 from changing regardless of the relative rotation of the rotation lever 36 and the pedal arm 18, regardless of the front-back adjustment of the pedal pad 32. The stepping stroke of can be maintained constant.

The embodiment of FIG. 5 is an example in which the present invention is applied to a vehicle accelerator pedal device 70 as an operation pedal device, and a bracket 74 fixed to a vehicle body 72 has a support shaft 76 around A pedal arm 78 is rotatably attached. The shaft center of the support shaft 76 corresponds to one shaft center, and the support shaft 76 is attached to the bracket 74 in a posture in which the shaft center is substantially parallel to the width direction of the vehicle. The pedal arm 78 is attached to the support shaft 76 at an intermediate portion, and the pedal pad 8 is provided at the lower end portion.
A stepping member 82 having 0 is provided, and
A pivot lever 84 is provided at the upper end of the pin 8 parallel to the support shaft 76.
It is arranged so as to be rotatable around 6. Stepping member 82
Is a pair of pins 90 and 92 penetrating through an elongated hole 88 formed in the pedal arm 78 as in the first embodiment.
The pedal arm 78 is attached so as to be movable in the vehicle front-rear direction while being held in the original position shown in the figure.
Further, one pin 90 is also engaged with a long hole 94 formed in the lower end portion of the rotating lever 84 in the vertical direction,
By rotating the rotating lever 84 relative to the pedal arm 78, the stepping member 82 is moved in the front-rear direction of the vehicle via the pin 90 thereof.

Support shaft 76 and pin 86 of pedal arm 78
A front-rear adjusting means 96 having the same structure as that of the front-rear adjusting means 50 is disposed at an intermediate position between and, and contacts the rotation lever 84 to rotate the pin 86 of the rotation lever 84 in the clockwise direction. It defines the edge. As a result, the pedal pad 8
When 0 is depressed, the rotation lever 84 and the pedal arm 78 are integrally rotated clockwise around the support shaft 76. Further, at the upper end of the rotating lever 84, a clevis 100 attached to the tip of a throttle cable 98 as an operating member is provided with a pin 10 parallel to the support shaft 76.
2, the rotary lever 84 is rotated integrally with the pedal arm 78 in the clockwise direction of the support shaft 76, so that the throttle cable 9 is rotated.
8 is pulled out and a throttle valve (not shown) is opened. A return spring 104 such as a tension coil spring is provided between the pedal arm 78 and the bracket 74, and always urges the pedal arm 78 counterclockwise of the support shaft 76. The clevis 100 is held in the original position in which the clevis 100 contacts the bracket 74 and the rotating lever 84 contacts the front-rear adjusting means 96.

On the other hand, when a switch (not shown) arranged in the driver's seat is operated and the turning lever 84 is turned relative to the pedal arm 78 counterclockwise of the pin 86 by the front-rear adjusting means 96, the stepping member is depressed. 82 is moved to the vehicle rear side, which is the right direction in the drawing, and is positioned at an arbitrary position between the front end shown in FIG. 5 and the rear end shown in FIG. As a result, the position of the pedal pad 80 in the vehicle front-rear direction is adjusted, but also in this embodiment, the position of the connecting portion of the throttle cable 98, that is, the pin 102 is displaced in accordance with the rotation of the rotating lever 84. The lever ratio is kept substantially constant regardless of the front-back adjustment of the pedal pad 80, and the stepping operation force is hardly changed.

In this embodiment, since the position of the clevis 100 is defined by the bracket 74, when the turning lever 84 is turned relative to the pedal arm 78, the pedal arm 78 and the support shaft 76 are accordingly moved. When the pedal pad 80 is rotated around, the height position and the posture of the pedal pad 80 are slightly changed, but as shown in FIG. If the alternative pedal arm 106 and the turning lever 108 are connected via the pin 86, the pedal arm 1 associated with the relative turning of the turning lever 108 will be described.
It is possible to suppress the rotation of 06.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the present invention can be implemented in other modes.

For example, in the above embodiment, the pedal arm 1
Although the stepping members 26 and 82 are attached so as to be movable in the front-rear direction through the long holes 24 and 88 provided in the 8, 78, the stepping members 26 and 82 are formed with the long holes to project into the pedal arm. You may make it engage with several pin provided. A groove may be provided instead of the elongated hole, or a linear guide member such as a guide rod or a guide rail may be used to movably attach the stepping member to the pedal arm.

Further, in the above embodiment, the rotating levers 36, 8
Although 4 is engaged with the pins 28 and 90, vertical grooves and notches are formed in the upper end portions of the stepping members 26 and 82, and the pins that engage with these grooves and notches are rotated. The stepping members 26, 82 can be moved up and down by standing on the levers 36, 84.

Further, the front-back adjusting means 50, 9 of the above embodiment
6 was capable of automatically and continuously changing the pad position by using the electric motor 52 and the screw shaft 54.
The rotating levers 36, 84 are provided with meshing teeth in an arc shape centered on the pins 34, 86, and racks and gears meshing with the meshing teeth are arranged on the pedal arms 18, 78.
The rack may be moved linearly or the gears may be rotationally driven by an electric motor to change the connection angle,
The driver may manually change the connecting angle of the rotating levers 36, 84 to fix the pedal levers 18, 78 integrally with the pedal arms 18, 78 by bolts or nuts. It is sufficient that the turning levers 36 and 84 can be positioned at an angle. The front-back adjusting means 5
0 and 96 may be arranged on the side of the rotating levers 36 and 84, and both ends of expansion and contraction are connected to both the pedal arms 18 and 78 and the rotating levers 36 and 84 so as to be relatively rotatable. May be.

In the above embodiment, the rod 42 and the throttle cable 98 are connected to the rotating levers 36 and 84,
Although the lever ratio is maintained to be substantially constant, the rod 42 and the throttle cable 98 may be connected to the pedal arms 18 and 78.

Further, the accelerator pedal device 7 of the above embodiment
The throttle cable 98 is connected to 0, but the present invention can be similarly applied to an accelerator pedal device that transmits an accelerator operation amount by a link or the like, and other operating pedal devices such as a clutch pedal device. Can also be applied to.

Although not illustrated one by one, the present invention can be carried out in various modified and improved modes based on the knowledge of those skilled in the art.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment in which the present invention is applied to a vehicle brake pedal device.

FIG. 2 is a perspective view showing an exploded main part of the brake pedal device of FIG.

3 is a front view showing a state where a pedal pad of the brake pedal device of FIG. 1 is moved to the rear side of the vehicle.

FIG. 4 is a diagram for explaining an embodiment in which a connection mode between a rod and a turning lever is changed in the brake pedal device of FIG.

FIG. 5 is a partially cutaway front view showing an embodiment in which the present invention is applied to a vehicle accelerator pedal device.

6 is a front view showing a state where a pedal pad of the accelerator pedal device of FIG. 5 is moved to the rear side of the vehicle.

FIG. 7 is a diagram illustrating another mode in which the connection form of the throttle cable and the rotating lever is changed in the accelerator pedal device of FIG.

[Explanation of symbols]

 10: Brake pedal device (operation pedal device) 14, 74: Bracket 18, 78, 106: Pedal arm 26, 82: Stepping member 32, 80: Pedal pad 36, 84, 108: Rotating lever 42: Rod (action member) ) 50, 96: front-rear adjusting means 70: accelerator pedal device (operation pedal device) 98: throttle cable (acting member)

Claims (2)

[Claims] 1. A bracket fixed to a vehicle body is rotatably provided around a uniaxial center, and a pedal pad is depressed to be rotated around the uniaxial center from a predetermined position. An operation pedal device capable of moving the position of the pedal pad in the front-rear direction of the vehicle while pressing or pulling the action member, the pedal arm being attached to the bracket so as to be rotatable about the one axis. A pedaling member provided at the lower end of the pedal arm so as to be movable in the front-rear direction of the vehicle while the pedal arm is held at the original position, and a pedaling member provided with the pedal pad; The pedal arm is rotatably connected about an axis substantially parallel to the one axis, and at the other end, the stepping member cannot relatively move in the front-rear direction of the vehicle. And a rotation lever that moves the stepping member in the front-rear direction of the vehicle by being relatively rotated with respect to the pedal arm, and is arranged across the rotation lever and the pedal arm. The rotation lever and the pedal arm are integrally rotated around the uniaxial center, and the rotation lever and the pedal arm are positioned at different connection angles to position the stepping member. Front and rear adjusting means for changing the front and rear, and the action member is rotatably connected to the pedal arm or the rotating lever about an axis substantially parallel to the one axis. Operation pedal device. 2. The action member, regardless of a change in a connection angle between the rotary lever and the pedal arm, a distance from the one axis to the pedal pad and a connection of the action member from the one axis. So that the ratio with the distance to the part is almost constant,
The operation pedal device according to claim 1, which is connected to a predetermined portion of the rotating lever.