JP2001225665A - Axle mechanism of electric motor car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an axle mechanism easily operated and safely stopped by a driver. SOLUTION: An axle arm 11 is journalled to a rotationally movable fulcrum 1 in an electric motor car and the axle arm 11 and the electric motor car are engaged by a plurality of return coil springs 15a, 15b in positions in different distances from the fulcrum 1. A limit switch actuating by sensing the stepping- down of an axle pedal 12 is installed therein.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accelerator mechanism for an electric vehicle.

[0002]

2. Description of the Related Art In general, the speed of an electric vehicle is accelerated or decelerated by adjusting the amount of depression of an accelerator pedal by a driver. Then, when the driver does not depress the accelerator pedal, it is necessary to gradually decelerate the electric vehicle and then to stop it reliably. It is also important for the driver that the driver does not feel uncomfortable in the relationship between the speed of the electric vehicle and the pressure on the accelerator pedal. In particular, when the pressure on the accelerator pedal during high-speed running is high,
It was difficult to depress the delicate accelerator pedal, which was a burden on the driver.

On the other hand, if any abnormality is recognized in the accelerator mechanism, it is necessary to stop the electric vehicle reliably in order to give priority to safety. In particular, if the coil spring, which is generally used for returning the accelerator pedal, breaks due to metal fatigue, corrosion, etc., the accelerator pedal is always depressed due to the weight of the accelerator pedal, and the electric vehicle runs away. The danger of doing was recognized.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an accelerator mechanism which is easy for a driver to operate and which can safely stop an electric vehicle even when a coil spring is broken due to metal fatigue or corrosion. To provide.

[0005]

According to a first aspect of the present invention, an accelerator arm is pivotally supported on an electric vehicle at a rotatable fulcrum, and the accelerator arm and the electric vehicle main body are returned. In an accelerator mechanism for an electric vehicle engaged by a coil spring for use in a vehicle, a plurality of coil springs are installed at positions at different distances from the fulcrum. It is characterized in that a limit switch which is activated by sensing the depression of the vehicle is installed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An accelerator mechanism according to the present invention will be described below in detail with reference to FIG.

FIG. 1A shows a basic position where the driver has not depressed the accelerator pedal 12. The accelerator arm 11 is pivotally supported by a motor vehicle body (not shown) at a rotatable fulcrum 1. Meanwhile, the accelerator pedal
Numeral 12 is fixed to the lower end of the accelerator arm 11 with bolts 16, and the driver adjusts the pressure of the accelerator pedal 12 with his toes to adjust the speed of the electric vehicle.

A limit switch 13 for detecting whether or not the accelerator pedal 12 is depressed is provided above the accelerator arm 11.
An accelerator volume 14 for generating a voltage corresponding to the amount of depression of the accelerator pedal 12 is provided. The provision of the limit switch 13 prevents the electric vehicle from moving unless the accelerator pedal 12 is depressed even when the accelerator volume 14 fails and an abnormal voltage is generated. Therefore, even in such a case, the electric vehicle can be stopped by releasing the accelerator pedal 12 from the driver's foot. Also, the accelerator arm 11 has a long hole 17
By providing a play, the accelerator mechanism is provided with play to prevent the electric vehicle from starting due to slight vibration or impact. Then, two coil springs 15a and 15b used for returning the accelerator pedal 12 were installed in vertical positions at different distances from the fulcrum, and the other end was fixed to the main body frame.

As shown in FIG. 1B, an accelerator pedal
When stepping on 12, the accelerator arm 11 rotates around the fulcrum 1. Since the coil spring 15a and the coil spring 15b have different distances from the fulcrum 1, when the driver depresses the accelerator pedal 12, the coil spring 15a extends more than the coil spring 15b. That is, when the accelerator pedal 12 is depressed little, only the tension of the coil spring 15a mainly acts, so that the pressure applied to the driver's foot is small, and when the accelerator pedal 12 is depressed greatly, two coil springs are used.
Since the pressure from 15a and 15b is received, the pressure on the driver's foot can be increased. Therefore, it is possible for the driver to feel uncomfortable in the relationship between the speed of the electric vehicle and the depression pressure of the accelerator pedal 12.
In particular, by lowering the depression pressure during low-speed running, it is possible to easily perform a delicate depression operation of the accelerator pedal 12. Further, by using two coil springs 15a and 15b used for returning the accelerator pedal 12, even if one of the coil springs is broken due to metal fatigue, corrosion, or the like, the other of the coil springs makes the accelerator pedal 12 basic. Since the vehicle returns to the position, the electric vehicle does not run away.

[0010]

As described above, by using the present invention, the depression pressure during low-speed running can be reduced,
A delicate operation of depressing the accelerator pedal can be facilitated. Further, by using a plurality of coil springs for returning the accelerator pedal, even if one of the coil springs is broken, the other coil spring returns the accelerator pedal 12 to the basic position, so that the electric vehicle does not run away. .

[Brief description of the drawings]

FIG. 1 is a main part of an accelerator mechanism according to the present invention. a)
The accelerator pedal is not depressed. b) The accelerator pedal is depressed.

[Explanation of Signs] 1: Support point 11: Accelerator arm 12: Accelerator pedal 13: Limit switch 14: Accelerator volume 15a, b: Coil spring, 16: Bolt 17: Slot 18: Pin

Claims (2)

[Claims] 1. An accelerator mechanism for an electric vehicle in which an accelerator arm is pivotally supported on an electric vehicle at a rotatable fulcrum, and the accelerator arm and the electric vehicle body are engaged by a return coil spring. An accelerator mechanism for an electric vehicle, wherein a plurality of coil springs are installed at different positions. 2. An accelerator mechanism for an electric vehicle according to claim 1, wherein said electric vehicle is provided with a limit switch which operates by detecting depression of an accelerator arm.