JPS5921057Y2 - Accelerator pedal switch mounting structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for an accelerator pedal switch in an automobile.

For example, in an electromagnetic powder type automatic clutch vehicle, clutch current is controlled on and off by a signal from an accelerator pedal switch.

This signal is generated the moment the accelerator pedal is pressed, and disappears when the accelerator pedal is released.

On the other hand, the accelerator pedal is connected to the throttle valve via an accelerator cable, and the throttle valve is controlled by the stroke of the accelerator pedal.The relationship between the clutch current signal from the accelerator pedal switch and throttle valve operation control is as follows. It is necessary to have strict constraints.

That is, firstly, the clutch current signal must be generated before the throttle valve is operated, secondly, the clutch current signal must always be generated while the throttle valve is operating, and thirdly, the clutch current signal must be generated before the throttle valve is activated. When the clutch returns to fully closed state, the clutch current signal must be cut off.

If the first condition is not met, the clutch current will flow after the throttle valve opens and the engine speed increases, causing a problem in which the clutch is suddenly engaged. The clutch will be disconnected while the vehicle is running, and if the third condition is not met, the clutch will not be able to disengage.

As a means to satisfy the above conditions, a switch is disposed on the underside of the accelerator pedal via a flexible support arm made of a leaf spring, and a roller provided at the tip of the accelerator link comes into contact with the underside of the switch. When the accelerator pedal is depressed, the switch actuating piece is first pushed and turned on by the resistance on the accelerator link side, and then the accelerator pedal depression force is transmitted to the accelerator link via the switch, and the accelerator link is activated. Something like this has already been developed (see Japanese Utility Model Publication No. 50-2428).
In this type of conventional structure, the switch is simply held between the accelerator pedal and the tip of the accelerator link, with one end supported by the other end of a leaf spring fixed to the accelerator pedal. Not only is the support of the switch extremely unstable, but the structure is such that the accelerator pedal depression force is transmitted to the accelerator link via the switch, so when the accelerator pedal is being depressed, the switch is always connected to the accelerator pedal depression force. If the resistance load on the accelerator link side acts on the switch, there are problems such as deterioration of the durability of the switch.

The present invention provides a mounting structure for an accelerator pedal switch that can solve the problems of the conventional device as described above, and will be described below with reference to the accompanying drawings.

1 to 3 show an embodiment of the present invention, in which 1 is an accelerator pedal lever; 2 is an accelerator pedal lever 1;
The accelerator pedal lever 1 and the switch arm 2 are rotatably attached to the bracket 4 by a pin 3.

Reference numeral 5 is an accelerator arm which is rotatably attached to the pin 3, and one end of an accelerator cable 6 is connected to the tip of the accelerator arm. ) is now operational.

An accelerator pedal switch 7 such as a microswitch is attached to the switch arm 2, and the accelerator pedal 1a
When the switch arm 2 is not depressed, the switch arm 2 is held in the position shown in the first figure by the spring 8, and the abutting portion 51 of the accelerator arm 5 is pushed by the switch arm 2, so that the throttle valve is in the fully closed state as shown in FIG. In this state, the actuating piece 71 of the switch 7 is closely opposed to or almost in contact with the stopper surface 52 provided on the accelerator arm 5, as shown in FIG. It faces the surface 52 with a predetermined gap a.

In the above configuration, when the accelerator pedal 1a is depressed,
The accelerator pedal lever 1 and the switch arm 2 integrated therewith rotate around the pin 3, but the accelerator arm 5 does not move in the range a until the initial pressing part 21 comes into contact with the stopper surface 52, and the switch 7 does not move. When the actuating piece 71 is pressed by the stopper surface 52, the switch 7 is actuated and generates a clutch current control signal.

After the pressing part 21 hits the stopper surface 52, when the pedal is depressed, the pressing part 21 presses the stopper surface 52, and the switch arm 2 and the accelerator arm 5 rotate as one, opening the throttle valve. .

When the throttle valve is in the open state, the pressing portion 21 and the stopper surface 52 maintain a contact state regardless of the opening degree, and the operating state of the switch 7 is reliably maintained.

When the accelerator pedal is returned, the accelerator arm 5 returns to the fully closed position of the throttle valve while being regulated by the switch arm 2, and then only the switch arm 2 and the accelerator pedal lever 1 are further returned by the range a by the spring 8. It hits the contact portion 51 and stops.

The operation of the switch 7 is stopped during this rotation in range a.

As described above, the operating force transmission system from the accelerator pedal to the accelerator cable is structured to have a predetermined play at the initial stage of depression of the accelerator pedal, and the accelerator pedal switch is configured to operate within the range of this play. When stepping on the pedal, the accelerator pedal switch always operates first before the throttle valve operates, and while the throttle valve is operating, the accelerator pedal switch never turns off, and when the throttle valve returns to fully closed, the accelerator pedal switch always operates. It can fully satisfy all the requirements of an accelerator pedal switch.

Furthermore, the play in the operating force transmission system from the accelerator pedal to the accelerator cable at the initial stage of accelerator pedal depression is set by the gap between the pressing part 21 of the switch arm 2 and the stopper surface 52 of the accelerator arm 5 facing it. The play can be set extremely accurately and easily, and when the accelerator pedal is depressed, the pedal force of the accelerator pedal is transmitted at the contact portion between the pressing portion 21 of the switch arm and the stopper surface 52 of the accelerator arm. Since the switch actuating piece is simply held in the on state, no pedal force or resistance load on the accelerator cable side acts on the switch 7, and no excessive force is applied to the switch itself, increasing the durability of the switch. It is possible to achieve a remarkable improvement in the clutch current, and it is possible to accurately control the clutch current for a long period of time, which can bring about a great practical effect.

Here, we have shown an example in which the clutch current is controlled on and off in an electromagnetic powder auto clutch vehicle using a signal from the accelerator pedal switch. It is also applied to so-called fuel cut devices that reduce fuel consumption by cutting the fuel supply when the clutch is released (when the clutch is released), and to accelerator pedal switches in general auto clutch devices that connect the clutch using suction negative pressure as the operating source. It is possible.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is an enlarged side sectional view of the main part of FIG. 1... Accelerator pedal lever, 1a...
・Accelerator pedal, 2...Switch arm, 3
...Pin, 4...Bracket, 5...
...Accelerator arm, 6...Accelerator cable, 7...Accelerator pedal switch, 8...
····spring.

Claims (1)

[Scope of utility model registration request] A switch arm integrated with an accelerator pedal is rotatably attached to a vehicle body member, and the base end of the accelerator arm, which has one end of an accelerator cable locked at its tip, is rotatable coaxially with the switch arm. Attachment forms a stopper surface on the accelerator arm that the pressing part of the switch arm integrated with the accelerator pedal comes into contact with when the accelerator pedal is depressed and rotated, and the switch arm comes into contact with it when no pedal force is applied to the accelerator pedal. A contact portion is formed to maintain a predetermined gap between the pressing portion of the switch arm and the stopper surface of the accelerator arm, and an accelerator pedal switch is attached to the switch arm.
The actuating piece is fixed so that when the accelerator pedal is depressed, it is pressed by the accelerator arm and turned on by the rotation of the switch arm within the gap between the pressing part of the switch arm and the stopper surface of the accelerator arm. A mounting structure for an accelerator pedal switch characterized by: