JPS6189130A - Accelerator pedal mechanism for car - Google Patents

Abstract

PURPOSE:To facilitate the adjustment of ON/OFF position of an accelerator switch by assembling the accelerator switch onto an accelerator pedal assembly. CONSTITUTION:A pedal assembly 7 has the first member 11 including a pedal plate 1a and the second member 12 which is connected in swingable ways with the first member 11 through a shaft 13 and connected with a wire cable 2. A spring 14 which acts in the direction for increasing the clearance at the operation point A for the transmission of a stepping force from the first member 11 to the second member 12 is installed. In order to increase the clearance at the operation point A over a prescribed distance, a stopper 15 is installed. When the clearance is less than a prescribed value, an accelerator switch 6 is set OFF, and in case of over a certain value, the accelerator switch is set ON.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an accelerator pedal mechanism that facilitates adjustment of an accelerator pedal.

(B) Prior art Conventionally, in vehicles equipped with automatic transmissions, an accelerator pedal mechanism with a switch has been used to detect when the vehicle is stopped and apply the brakes, or to detect when the vehicle is starting off and change gears. There is. FIG. 2 shows an example of a conventional accelerator pedal mechanism of this type, where ▪ is an accelerator pedal body, and a pedal plate 1a is attached to the front end of the accelerator pedal body.

Reference numeral 2 denotes an accelerator wire cable for moving the engine throttle lever, one end of which is connected to the opposite end of the accelerator pedal body l. 3 is fixed to the vehicle body and is a pedal body 1
bracket to support.

4 is a shaft that rotatably supports the accelerator pedal body l on the bracket 3; 5 is a return spring that pushes the accelerator pedal body l back toward the low opening side of the engine throttle; 6 is fixed to the bracket 3, and indicates the position of the accelerator pedal [ This is an accelerator switch that opens and closes from this point, and is turned on when no load is applied to the pedal plate 1a, and turned off when the accelerator is stepped on and moves slightly. The off signal of the accelerator switch 6, which is output when the accelerator pedal is depressed at the time of starting the vehicle, is used to change the transmission gear.

In such a conventional accelerator pedal 9 mechanism, the accelerator switch and the accelerator pedal body are installed separately, and then the on/off position of the accelerator switch is adjusted. The problem is that the work is troublesome and time-consuming.

(Structure and Purpose of the Invention The present invention has been made in view of the above-mentioned points.It is an object of the present invention to easily adjust the on/off position of an accelerator switch provided in an accelerator pedal mechanism, and has achieved this object. To do.

a first member that is swingable to receive pedal force; and a second member that has one end connected to an accelerator wire cable or an accelerator linkage and that transmits pedal force from the first member via a pedal force application point.
The accelerator pedal assembly is made up of these parts, and the accelerator switch is incorporated into this accelerator pedal assembly.

A predetermined clearance is provided between the first member and the second member at the point of application of the pedal force, and as the clearance decreases due to the pedal force acting on the first member, the accelerator switch is switched between on and off states. It was configured so that

(Middle example The present invention will be explained below based on the drawings.

FIG. 1 shows a second embodiment of the accelerator pedal mechanism according to the present invention, and the same components in FIG. 1 as in FIG. 2 are given the same reference numerals. That is, 2 is an accelerator wire cable, 3 is a bracket, 4 is a support shaft, and 5 is a return spring.

6 is an accelerator switch. 7 is a pedal assembly, and this pedal assembly 7 is connected to a first member 11 including a pedal plate 1a so as to be swingable with a shaft 13, and is connected to a wire cable 2 at one end. a second member 12, a spring 14 that acts in a direction to widen the clearance at the pedal force application point A+ that transmits the pedal force from the first member 11 to the second member 12, and an accelerator fixed to the first member 11. It consists of a switch 6,
The first member 11 and the second member 12 are configured by a stopper 15 to prevent the clearance at the point of action A from expanding beyond a predetermined distance. Accelerator switch 6 is acting point A
When the clearance is below a certain value, it is turned off, and when it is above a certain value, it is turned on, and the spring 14 is selected to have such a force that the accelerator switch 6 will not turn off even if acceleration due to vehicle vibration is applied when no pedal force is applied.

Now, with the accelerator pedal mechanism 9 mentioned above, the pedal plate 1
When no pedal force is applied, the spring 14 separates the pedal force application point A to create a clearance, so the accelerator switch 6 is turned on. Now pedal board 1a
When the pedaling force increases, the force changes from the first member 11 to the second member 12.
The pedal force is transmitted via the G spring 14, and the second member 12 pulls the cable 2. In this case, the spring 14 has a sufficiently small spring force with respect to the throttle operation force via the cable 2, so that the spring 14 is bent, and the clearance created at the point of application A is reduced, so that the point of action A comes into contact. At this time, the accelerator switch 6 is turned off. After the point of application A makes contact, when the pedal force acting on the pedal plate 1a increases further and reaches a value exceeding the throttle operation force, the second member 12 pulls the cable 2 to open the throttle. In this way, it is possible to detect that the accelerator pedal has been pressed before the throttle is opened.

In this embodiment, a displacement detection type switch is used as the accelerator switch 6, but the same detection can be performed using a pressure sensitive type switch, and it is also possible to activate the switch with a constant pedal depression force. . Further, the accelerator switch may be attached to the second member instead of the first member.

(As explained in the effects of the present invention, the present invention includes a swingable first member that directly receives pedal force, and a first member that is connected at one end to an accelerator wire cable or an accelerator linkage.
A second member to which the pedal force is transmitted from the member through the pedal force application point constitutes an accelerator pedal assembly, an accelerator switch is incorporated into the accelerator pedal assembly, and the first member and the second member are connected at the pedal force application point. A predetermined clearance is provided between the accelerator pedal assembly and the accelerator switch, which allows the accelerator switch to be turned on and off while the clearance is reduced by the pedal force acting on the first member, thereby improving the dimensional accuracy of the parts that make up the accelerator pedal assembly. If managed, the on/off timing of the accelerator switch can be obtained accurately, eliminating the hassle of adjustment work and avoiding malfunctions due to poor adjustment. Additionally, in connection with this, it becomes easier to turn the switch on and off for a certain amount of depression of the accelerator. Additionally, the operating stroke of the accelerator switch is limited to a fixed value by the clearance of the point of application of the pedal force, making it easier to guarantee durability. In addition, with such a configuration, the number of assembly steps does not increase depending on the presence or absence of an accelerator switch. Furthermore, when the pressure on the accelerator pedal is released, the pedal plate returns due to the combined force of the spring 14 and the return spring 5, so there is no need to increase the spring force of the return spring as strong as in the conventional case.
Pedal depression force is not increased and the operational feel is not impaired.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the accelerator pedal mechanism according to the present invention.
FIG. 2 is an example of a conventional accelerator pedal mechanism. l...Accelerator pedal body la...Pedal board 2...Accelerator wire cable 3...Bracket 4...Axle 5...
・Return spring 6...Accelerator switch 7
...Pedal assembly 11...First member 12.
...Second member 14...Spring 15...
·stopper

Claims (1)

[Claims] a first member having a pedal plate for applying pedal force and pivotably supported on a fixed bracket; a first member pivotably supported on the first member; a second member coupled to the linkage;
an elastic member attached to the first member or the second member, which provides a predetermined clearance when no pedal force is applied to a pedal force application point that transmits the pedal force applied to the first member to the second member; An accelerator pedal mechanism for a vehicle, comprising: an accelerator switch that is switched between an on state and an off state while the clearance is being reduced by a pedal force acting on a first member.