JP2003094979A - Accelerator pedal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize an accelerator pedal device capable of adjusting the difference between the stepping side load and return side load of a pedal with simple constitution without being influenced by a return spring by providing a friction body at a separate part from the return spring. SOLUTION: This accelerator pedal device is provided with an accelerator rod 10 with a pedal sheet 15 stuck to one end and with a shaft pin 16 fixed to the center part; a bracket 11 for rotatably supporting the shaft pin 16; an opening sensor 13 driven by the accelerator rod 10 to send out opening information; and the return spring 12 engaged at one end with the bracket 11 and at the other end with the accelerator rod 11 and energizing to return the accelerator rod 10 into the original position. A bush 17 is fixed to one end of the shaft pin 16, and a clip 18 holding the bush 17 rotatably to apply frictional resistance is disposed at the bracket 11.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an accelerator pedal device. Specifically, by fixing the bush to the shaft pin portion of the accelerator pedal, providing a clip that sandwiches the bush to generate frictional resistance, and providing frictional resistance adjusting means to the clip, the pedal depression side load and the return side load are provided. The present invention relates to an accelerator pedal device that can adjust the difference between and.

[0002]

2. Description of the Related Art Recently, along with the computerization of functional parts of automobiles, accelerator pedal devices have also been computerized. The accelerator pedal device is cableless, and as shown in FIG. 4 (a) or FIG. 4 (b), the accelerator rod 2 drives the opening sensor 3 that controls the opening of the throttle. For this reason, the difference (hysteresis) between the pedal depression side load and the return side load generated by the frictional resistance of the accelerator cable is reduced. If this load difference is small, the driver feels heavier pedals and tires his legs when he keeps the amount of pedal depression constant when driving at a constant speed.

Therefore, as shown in FIG. 4 (a), resistance is generated by the dummy cable 4, or as shown in FIG. 4 (b), the cable 6 is passed through the pipe 5 and is hooked on the accelerator rod. Causes resistance. Further, although not shown, there is also a system in which the reaction force of the return spring is used to press the friction body against the case or the like to generate resistance, and the load difference between the pedal depression side and the return side is generated by these resistances.

[0004]

In the conventional accelerator pedal device as described above, the method of using the dummy cable or the pipe has many components, increases the cost, and requires a large manipulating space. In addition, in the method of pressing the friction body using the reaction force of the return spring, the hysteresis load is affected by the return spring, so both the stepping load and the hysteresis load must be set by the return spring. Is difficult to obtain, and there is a problem that the load difference of hysteresis cannot be adjusted.

In view of the above conventional problems, the present invention has an inexpensive structure by providing a friction body in a portion different from the return spring, and is not affected by the return spring and the pedaling side load and the return of the pedal. An object of the present invention is to realize an accelerator pedal device capable of adjusting the difference in side load.

[0006]

In order to achieve the above object, an accelerator pedal device according to claim 1 of the present invention is an accelerator rod 10 having a pedal seat 15 fixed to one end and a shaft pin 16 fixed to a central portion. A bracket 11 that rotatably supports the shaft pin 16, and an opening sensor 13 that is driven by the accelerator rod 10 to send opening information.
And an return pedal 12 for engaging the bracket 11 at one end and the other end for engaging the accelerator rod 10 to urge the accelerator rod 10 to return to its original position. At the shaft pin 1
6, a bush 17 is fixed to one end of the bracket 6, and a clip 18 is provided on the bracket 11 to rotatably clamp the bush 17 to provide frictional resistance. In addition, claim 2 is, the bush 17
Is formed of a resin.
Further, according to claim 3, the clip 18 is provided with a bush 17
It is characterized in that a frictional resistance adjusting means capable of adjusting the frictional resistance with respect to is provided. Further, a fourth aspect of the present invention is characterized in that the frictional resistance adjusting means is an adjusting bolt 20 and a nut 21 capable of adjusting the opening of the tip of the clip 18.

By adopting this structure, a bush is fixed to the shaft pin of the accelerator rod, and a clip for sandwiching the bush to give a frictional resistance and an adjusting means capable of adjusting the force for sandwiching the bush of the clip. It is possible to obtain an accelerator pedal device having such an inexpensive structure and capable of adjusting the difference between the pedaling side load and the returning side load of the pedal without being affected by the return spring.

[0008]

1 and 2 are views showing an embodiment of an accelerator pedal device of the present invention. FIG. 1 is an assembled perspective view and FIG. 2 is an exploded perspective view. In FIG. 1, reference numeral 10 is an accelerator rod, 11 is a bracket, 12 is a return spring, 13 is an opening sensor, and 14 is a bearing portion. A pedal seat 15 is fixed to one end of the accelerator rod 10, and a shaft pin 16 is fixed to the center of the accelerator rod 10. The shaft pin 16 has one end supported by a bearing hole 11b provided in the rising portion 11a of the bracket 11 and the other end supported by a bearing portion 14 provided in the bracket 11 to support the accelerator rod 10. It is rotatably supported.

The return spring 12 is composed of two coil springs 1.
2a and 12b are provided in duplicate, and the interval tube 12 is provided between them.
c is arranged. In addition, the return springs 12a and 12b
Engages the bracket 11 at one end thereof and engages the accelerator rod 10 at the other end thereof to urge the accelerator rod 10 to return to its original position. The opening sensor 13 is attached to the bracket 11,
By rotating the arm 13a by the accelerator rod 10, the opening degree information is output to the throttle of the carburetor.

As shown in FIG. 2, the bearing portion 14 comprises a bush 17, a clip 18, a washer plate 19, an adjusting bolt 20, and a nut 21. The bush 17 is made of resin and has a center. A shaft hole 17a having two surfaces is formed. And the bush 17
Is fitted to a portion of the shaft pin 16 that forms two surfaces, and a washer plate 19 is inserted into the end of the shaft pin to prevent the shaft pin from coming off.

The clip 18 is a strip-shaped metal plate having elasticity and is formed in a substantially U shape having an arcuate portion so that the arcuate portion can hold the bush 17 from the left and right. Bolt insertion holes 18a and 18b are formed in the vicinity of both U-shaped tips, adjustment bolts 20 are inserted into the holes 18a and 18b, and a U-shaped tip portion can be tightened by a nut 21. It is like this. Such members are assembled and fixed to the bracket 11 by the mounting bolts 22 and nuts 23 as shown in FIG.

The operation of the present embodiment configured as described above will be described below. Axel rod 10 has its axial pin 1
Bearing hole 1 in which one end of 6 is formed in bracket 11
1b, the other end is supported by a clip 18 via a bush 17, and is rotatable.
By stepping on the pedal seat 15, the accelerator rod 10
Is rotated to drive the opening sensor 13 to send opening information.

At this time, since frictional resistance is generated between the bush 17 and the clip 18, the rotation of the accelerator rod 10 is resisted. Therefore, the resistance when the pedal seat is depressed is the sum of the frictional resistance between the bush 17 and the clip 18 and the load of the return spring, and the resistance at the time of return is the frictional resistance between the bush 17 and the clip 18 and the return. Since the difference is the load of the spring, the load difference between the stepping side and the returning side of the pedal can be obtained.

Further, the adjusting bolt 2 provided on the clip 18
When 0 and the nut 21 are tightened, the tip of the clip 18 is narrowed to increase the force for holding the bush 17 and increase the frictional resistance. On the contrary, the adjustment bolt 2
If 0 is loosened, the tip of the clip 18 widens and the frictional resistance can be reduced. This makes it possible to adjust the load difference between the stepping side and the returning side of the pedal.

When it is difficult to insert the bush 17 into the clip 18 when assembling the bearing portion 14, as shown in FIG. 3, the tip of the clip 18 is bent and a cutout portion 18d is formed in the bent portion 18c. Provided,
At the time of assembling, a snap ring pliers 23 as shown in FIG.
It can be easily pushed and opened by engaging with d and grasping the lever 23b.

[0016]

According to the accelerator pedal device of the present invention,
The effect of the return spring is an inexpensive structure consisting of a clip that fixes the bush to the shaft pin of the accelerator rod, holds the bush to give frictional resistance, and an adjusting means that can adjust the force holding the bush of the clip. There is an advantage that the difference between the pedaling side load and the returning side load of the pedal can be adjusted without receiving the load, and the overload setting during development becomes easy.

[Brief description of drawings]

FIG. 1 is an assembled perspective view showing an embodiment of an accelerator pedal device of the present invention.

FIG. 2 is an exploded perspective view showing an embodiment of an accelerator pedal device of the present invention.

3A and 3B are views showing another example of the clip in the embodiment of the accelerator pedal device of the present invention, FIG. 3A is an assembled perspective view, and FIG. 3B is a view showing a snap ring pliers.

FIG. 4 is a diagram showing two examples of conventional accelerator pedal devices.

[Explanation of symbols]

10 ... accelerator rod 11 ... Bracket 12, 12a, 12b ... Return spring 13 ... Opening sensor 14 ... Bearing part 15 ... Pedal seat 16 ... Axis pin 17 ... Bush 18 ... clip 19 ... Washer plate 20 ... Adjusting bolt 21, 23 ... Nuts 22 ... Mounting bolt 23 ... Snap ring pliers

Claims (4)

[Claims] 1. An accelerator rod (10) having a pedal seat (15) fixed to one end and a shaft pin (16) fixed to a central portion, and a bracket (rotatably supporting the shaft pin (16). 11) and the accelerator rod (10)
Opening sensor (13) that is driven by the vehicle to send opening information
And a return spring (12) engaging one end of the bracket (11) and the other end of the accelerator rod (10) to urge the accelerator rod (10) to return to its original position. In an accelerator pedal device comprising: a clip (17) that fixes a bush (17) to one end of the shaft pin (16) and rotatably clamps the bush (17) to give a frictional resistance. 18) The accelerator pedal device characterized in that 18) is arranged on the bracket (11). 2. The accelerator pedal device according to claim 1, wherein the bush (17) is made of resin. 3. The bush (1) is attached to the clip (18).
7. The accelerator pedal device according to claim 1, further comprising frictional resistance adjusting means capable of adjusting a frictional resistance with respect to 7). 4. The clip (1) for adjusting the frictional resistance.
The accelerator pedal device according to claim 3, which is an adjusting bolt (20) and a nut (21) capable of adjusting the opening of the tip of 8).