JPH03124204A - Acceleration detector for battery vehicle - Google Patents

Abstract

PURPOSE:To prevent erroneous running due to breakdown of an energizing spring by setting the detecting level of an acceleration detecting means higher than a prescribed maximum level upon breakdown of the energizing spring and stopping the running upon detection of an acceleration exceeding over the prescribed maximum level. CONSTITUTION:A roller 13 is arranged at the tip of the curved contacting section 12 of a rotating arm 6 mounted on a supporting shaft 5, and the roller 13 is contacting with an accelerator pedal 3. The rotating arm 6 is energized counterclockwise by means of a spring 8 and pushes up the accelerator pedal 3 through the roller 13. Rotary angle of the rotating arm 6 is detected by means of an acceleration sensor 16. Upon breakdown of the spring 8, the rotating arm 6 is rotated by means of a spring 15 until it collides against a floor 1 and the output from the acceleration sensor 16 exceeds over a prescribed maximum level. It is detected by means of a control circuit which then provides a stop running command.

Description

[Detailed description of the invention] and industrial application fields. The present invention relates to an accelerator detection device for a battery vehicle.

[Prior Art] As shown in FIG. 7, an accelerator mechanism in a battery-powered vehicle includes a rotating arm 32 that is rotatably supported by a support shaft 31 below a floor 30 and projects upward from the floor 30. A 43-pole roller 33 rotatably attached to the upper end of this arm 32 is brought into contact with the lower surface of an accelerator pedal 34. The lower end of the arm 32 is biased clockwise by a pull spring 36 supported by a bracket 35 protruding from the lower surface of the floor 30, and a roller 33 normally holds the pedal 34 in the open position. Then, the accelerator pedal 34 is rotated by a depression operation between the release position and the maximum depression position where it abuts a stopper 37 protruding above the floor 30.

An accelerator sensor 38 consisting of a potentiometer is provided on the support shaft 31''2 of the arm 32, and this accelerator sensor 38 controls the rotation angle θ of the arm 32, that is, the amount of depression of the accelerator pedal 34, to an output voltage as shown in FIG. This detection signal is output to a control section (not shown). Then, the control section drives a traveling motor, also not shown, at a rotational speed based on the detection signal.

[Problems to be Solved by the Invention] The arm 32 described above is normally biased clockwise by the pull spring 36, and the pull spring 36 is biased in response to the force applied when the pedal 34 is depressed. Rotate counterclockwise against the pressure. Therefore, as shown in FIG. 9, when the pulling spring 36 is broken due to deterioration or the like and the urging force applied to the arm 32 is lost, the arm 32 rotates due to the weight of the pedal 34, and based on this malfunction, the accelerator sensor 38
The control unit rotates the motor in accordance with the signal output from the motor. Therefore, the vehicle may start against the driver's will, or the running speed may rise higher than a desired value, and stable running control may not be performed.

This invention was made to solve the above-mentioned problems, and its purpose is to provide an accelerator detection device for a vehicle that can perform stable driving control according to the amount of accelerator operation. It is in.

[Means for Solving the Problems] In order to achieve the object described above, the present invention includes: an accelerator means for instructing the vehicle to run at a speed corresponding to the amount of operation; and an accelerator means that contacts and interlocks with the accelerator means. At the same time, an interlocking means that is always activated in the opening direction of the accelerator means, an accelerator detecting means that detects the operation amount of the accelerator means through the operation of the interlocking means, and an accelerator detecting means that detects the operation amount of the accelerator means through the operation of the interlocking means, and a a drive control means for driving the traveling motor at a rotational speed; a biasing means for biasing the interlocking means; and a disengagement promotion means for actively disengaging the interlocking means from the accelerator means when the biasing means is not in operation; The vehicle comprises a detachment detecting means for detecting that the interlocking means has disengaged from the accelerator means, and a stop control means for invalidating the detection result of the detecting means based on the detection result of the disengagement detecting means and holding the traveling motor stopped. That is the gist of it.

The operation amount of the accelerator means is detected by the detection means through the operation of the interlocking means which is energized by the action urging means and comes into contact with the accelerator means. The drive motor is controlled at a rotational speed of
When the urging means is not operating, the interlocking means is disengaged from the accelerator means by the disengagement promotion means, this is detected by the disengagement detection means, and the stop control means invalidates the detection result of the detection means based on the detection result of the disengagement detection means. to keep the travel motor stopped.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to FIGS. 1 to 6.

In Fig. 1, the toe floor 1 of the driver's seat of a battery vehicle is shown.
An accelerator pedal 3 serving as an accelerator means is rotatably provided on the top via an accelerator bracket 2, and a pedal stopper 4 is protruded in front of the accelerator pedal 3.

Inside the floor 1, a rotation arm 6 is rotatably supported on the support shaft 5, and in front of the support shaft 5, a spring bracket 7 that protrudes downward from the lower surface of the floor 1 and a lower end of the rotation arm 6 are installed. The arm 6 is biased clockwise by a pulling spring 8 as biasing means. Then, an abutment protrusion 9 that protrudes upward in a hook shape at the front of the lower end of the arm 6 abuts an arm stopper 10 provided at the rear of the bracket 7 on the lower surface of the floor 1, thereby preventing rotation in the clockwise direction. The roller 13, which is pivotally supported at the upper end of the bent portion 12 that protrudes upward from the protrusion allowance hole 11 of the floor 1, comes into contact with the lower surface of the pedal 3, and the pedal 3 is moved to the open position (non-operating position). It is held in Note that the arm 6 and the roller 13 constitute interlocking means.

Further, inside the floor 1, an auxiliary spring bracket 14 is fixedly installed at the rear of the lower part of the rotating arm 6 as a detachment promoting means, and between the bracket 14 and the lower end of the arm 6, , 8 are installed.

Furthermore, an accelerator sensor 16 as an accelerator detecting means and a detachment detecting means consisting of a potentiometer is provided on the support shaft 5-hi so as to rotate with the rotating arm 6. A voltage signal corresponding to the detected rotation angle θ of the rotating arm 6, that is, the amount of depression of the accelerator pedal 3, is output to the control section 17 (FIG. 4) as a drive control means and a stop control means, and the control section 17
The drive motor 18 is driven and controlled based on the rotation command value based on the manually applied voltage (2) of the cigarette.

As shown in FIG. 3, this accelerator sensor 16 has zero voltage when the accelerator pedal 3 is in the open position and the arm 6 biased by the pull spring 8 has a rotation angle θ. ■ Output. The accelerator sensor 16 increases the output voltage in proportion to an increase in the detected rotational angle θ of the arm 6. Then, by pressing the pedal 3 (Fig. 2) until it contacts the stopper 4, the pulling spring 8
When the rotation angle θ of the arm 6 rotated counterclockwise against the force reaches the rotation angle θmax, the voltage Vmax is output to the control unit 17 .

If the tension spring 8 breaks as shown in FIG. 5 when the control section 17 is in operation, the arm 6 is moved by the auxiliary tension spring 1.
5, it is actively rotated outward in the counterclockwise direction. and,
The roller 13 separates from the lower surface of the pedal 3 whose rotation is regulated by contacting the stopper 4 (that is, the arm 6 is rotated beyond the rotation angle θmax in FIG. 3) and comes into contact with the floor 1 (- The arm 6 is rotated counterclockwise until the rotation angle θX is reached.

When the rotation angle θ of the arm 6 exceeds the rotation angle θmax, the accelerator sensor 16 changes the output voltage ■ to the voltage V.
max, and outputs a voltage Vx corresponding to the rotation angle θX to the control unit 17. The control unit I7 controls the voltage V input from the sensor 16 according to a pre-stored program.
If the maximum value is exceeded, the pulling spring 8 will break and the accelerator operation amount cannot be detected accurately, so the drive of the motor 18 will be stopped and the vehicle will be stopped.

2, in this embodiment, the accelerator pedal 3 is supported from below via the roller 13. The rotation arm 6 is biased by a tension spring 8, and the accelerator pedal 3 is always biased in the release direction. Then, the sensor 16 that detects the operation amount of the accelerator pedal 3, that is, the rotation angle θ of the arm 6 outputs a detection signal (voltage ■) to the control unit 17, and based on this detection signal, the control unit 17 controls the driving motor 18. to drive.

When the pulling spring 8 breaks, the arm 6 is actively rotated by the auxiliary pulling spring 15 so as to exceed the maximum allowable operation amount (rotation angle θmax) of the accelerator pedal 3. Then, based on the detection signal from the sensor 16 that has detected this, the control unit 7 stops outputting a signal to the travel motor 18 and holds it stopped.

Note that the present invention is not limited to the above-described embodiments; for example, as shown in FIG. or ■ A pressure-sensitive switch is provided on the floor 1 as a detachment detection means, and when the roller 13 comes into contact with the floor 1 when the tension spring 8 is broken, the pressure-sensitive switch detects this and controls this detection signal. It outputs to section 17.

It goes without saying that any changes can be made without departing from the spirit of the invention.

[Effects of the Invention] As described in detail above, the present invention exhibits the excellent effect of being able to perform stable travel control according to the amount of accelerator operation.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing the accelerator pedal according to the present invention together with its support mechanism, Fig. 2 is a cross-sectional view showing the accelerator pedal in a depressed state, and Fig. 3 is a block circuit diagram showing the electrical configuration of the present invention. , Figure 4 is a diagram showing the relationship between the rotation angle of the arm detected by the accelerator sensor and the value of the voltage 0 signal output to the control unit accordingly, and Figure 5 is a diagram showing the relationship between the rotation angle of the arm detected by the accelerator sensor and the value of the voltage 0 signal output to the control unit. 6 is a side view showing another example, and FIGS. 7 to 9 are conventional examples, of which FIG. 7 is a sectional view showing the accelerator pedal together with its support mechanism. , Fig. 8 is a diagram showing the relationship between the rotation angle of the arm detected by the accelerator sensor and the value of the voltage signal output to the control unit in accordance with this, and Fig. 9 is a diagram showing the relationship between the rotation angle of the arm detected by the accelerator sensor and the value of the voltage signal output to the control unit accordingly. It is a sectional view showing an accelerator pedal in a state. Accelerator pedal 3 as accelerator means, rotating arm 6 as interlocking means, auxiliary tension spring 15 as disengagement promoting means, accelerator sensor 16 as accelerator detection means and disengagement detection means, control as drive control means and stop control means part 17, traveling motor 18, weight 19° as a means for promoting detachment.

Claims (1)

[Claims] 1. An accelerator means for instructing the vehicle to run at a speed according to the amount of operation; an accelerator means that contacts and interlocks with the accelerator means;
an interlocking means that is always biased in the opening direction of the accelerator; an accelerator detection means that detects the amount of operation of the accelerator through the operation of the interlocking means; and running at a rotational speed according to the detection result of the detection means. a drive control means for driving a motor for the motor; a biasing means for biasing the interlocking means; a detachment promotion means for actively disengaging the interlocking means from the accelerator means when the biasing means is not in operation; Accelerator detection for a battery vehicle, comprising a detachment detection means for detecting detachment from the means, and a stop control means for invalidating the detection result of the detection means based on the detection result of the detachment detection means and stopping and holding the driving motor. Device.