JPH1146401A - Alarm for electric motor car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible for a driver to operate an electric motor car having a similar feeling of driving an engine-driven car, by producing a sound for only a given period of time from a starting time when a momentary switch is operated in starting. SOLUTION: The change-over of a switch 12 from an OFF state to a start state causes voltages divided with resistors r1 and r2 to be applied to the base of a switching element SW4 to turn on. This turned-on switching element SW4 applies a battery voltage to the exciting coil R of a self-holding relay via a witch 12 to close a relay contact R1. The closing of this contact R1 causes a current to be supplied to a controlling device 11 via a power supply 16. Then, the controlling device 11 and a timer function in a micro processing unit MPU11A start operating. At the same time, an output from an I/O port 11B is applied to the base of a switching element SW3, which is switched on to operate a sound producing means 15. When the switching element SW3 is switched off in a given period of time, the sound producing means 15 stops its operation accordingly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a battery, a solar cell or the like as a driving energy source, and comprises a motor driven by driving energy supplied from these driving energy sources.
An electric vehicle that starts moving quietly, emits a sound especially at the time of starting, informs the driver of the power-on of the electric vehicle, and allows the driver to operate the vehicle in the same manner as an engine vehicle.

[0002]

Conventionally, an electric vehicle that uses a battery, a solar cell, or the like as a driving energy source, has a motor driven by driving energy supplied from the driving energy source, and operates quietly. If the power is turned on by operating a momentary switch such as an electric vehicle having a function of turning off the power after a certain period of time (auto power off function) when the power is turned on when the momentary switch is operated ( There is no starting sound (when the power is turned on) (starting motor or engine sound when operating a momentary switch in an engine car), which is not heard by the driver. If you see the monitor or operate the car body and it does not move, operate the momentary switch again How troublesome operation due, for the things that were accustomed to operating the engine car, there is a problem that it is difficult operation. The present invention has been made to solve the above-mentioned problems.

[0003]

According to the present invention, a momentary switch which is operated at the time of starting is arranged in a driver's cab of an electric vehicle, and when the momentary switch is operated, a sound is generated only for a predetermined time from the start time. The above-described problem has been solved as a configuration including a sound generating unit that generates a sound.

[0004]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an alarm device for an electric vehicle according to an embodiment of the present invention.
In the vehicle body 2, a drive wheel 3 is disposed at a front portion of the vehicle body 2, a steering wheel 4 is disposed at a rear portion, a battery 5 is mounted on the upper portion of the steering wheel 4, and a fork 6 is vertically moved in front of the vehicle body 2. A mast device 7 serving as a guide when moving is mounted.

[0005] A front hood 8 is mounted at the front of the vehicle body 2 and behind the mast device 7. The front hood 8 has a tilt operation lever 9 for tilting the mast device 7 back and forth, and a fork. A control device (referred to as a control device that performs overall control including traveling and hydraulic pressure control) 11 disposed on the vehicle body 2 and a battery 5 via a power supply 16 together with a lift operation lever 10 that raises the load 6. Switch 12 to connect
Are arranged respectively.

[0006] The control device 11 includes an I / O port 11.
B, MPU 11A, ROM 11C and RAM 11D. The I / O port 11B has an accelerator signal obtained by converting the operation signals of the tilt operation lever 9 and the lift operation lever 10 and the depression angle of the accelerator pedal 17 into an electric signal. , And a traveling motor 13 for driving and running the counter-type battery forklift 1, a mast device 7 for tilting forward and backward, and a hydraulic pump P for supplying a pressure oil for raising the fork 6. When the electric motor 14 and the switch 12 are operated, power is supplied from the power supply 16 to the control device, and the power is output to the sound generating means 15 for generating a sound only for a predetermined time from the power supply start time.

The driving motor 13 has a switching element SW2, and the hydraulic motor 14 has a switching element SW2.
Each of the switches 1 and 2 is connected to an I / O port 11B so as to perform appropriate control based on the operation result of the MPU 11A,
Is operated to supply power to the control device, the MPU 11A
The sound generating means 15 for generating a sound only for a predetermined time from the start time based on the result of the timer operation at the I / O port 11B
It is connected to the.

The switch 12 has a contact 12A closed, a contact 12
OFF state of B open, contact 12C open, ON state of contact 12A open, contact 12B closed, contact 12C open, and contact 12A
It has three connection states of open, contact 12B closed, and contact 12C closed, and has a momentary switch structure that returns to the ON state by a spring force in the start state.

The sound generating means 15 includes a contact 1 of the switch 12.
2B is connected to a horn H and a switching element SW3 via a self-holding relay contact R1, and the base of the switching element SW3 is connected to the I / O port 11B.

The power supply circuit 18 connects the self-holding relay exciting coil R and the switching element SW4 in series with the voltage divided by the two resistors r1 and r2 to the base of the switching element SW4. The above I / O port 1
1B is connected via a resistor r3, and the exciting coil R is connected to a self-holding relay contact R1 via a backflow preventing diode D1.

Hereinafter, specific operations will be described in detail. Switch 1
2 is switched from the OFF state to the start state, the resistance r1
And the voltage divided by the resistor r2 is the switching element SW4
And the switching element SW4 conducts.

When the switching element SW4 is turned on, the battery voltage is applied to the self-holding relay exciting coil R via the switch 12, and the self-holding relay contact R1 is closed.

When the self-holding contact R1 is closed, power is supplied to the control device via the power supply 16, and the control device starts operating.

When the control device operates, the output from the I / O port 11B is applied to the base of the switching element SW3 at the same time as the timer function in the MPU 11A starts operating, and the switching element SW3 is turned on. The sound generating means 15 operates, and after a lapse of a predetermined time, the I / O port 11
When the output from B interrupts the conduction of the switching element SW3, the operation of the sound generating means 15 is stopped.

[0015]

According to the present invention, as described above, a momentary switch operated at the time of starting is arranged in the cab portion of an electric vehicle, for example, a counter-type battery forklift.
When the mental switch is operated, it has a sound generating means that generates a sound only for a predetermined time from the start time, emits a sound at the time of starting, informs the driver of the power-on state of the electric vehicle, and has the same feeling as an engine vehicle I can operate it.

[Brief description of the drawings]

FIG. 1 shows a side view of a counter-type battery forklift embodying the present invention.

FIG. 2 shows a control device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Counter-type battery forklift 2 Body 3 Steering wheel 4 Driving wheel 5 Battery 6 Fork 7 Mast device 8 Front hood 9 Tilt operation lever 10 Lift operation lever 11 Control device 12 Switch 13 Traveling motor 14 Hydraulic motor 15 Sound Generation control means 16 Power supply 17 Accelerator pedal 18 Power supply circuit

Claims (1)

[Claims] A momentary switch which is operated at the time of starting is arranged in a cab portion of an electric vehicle, and a sound generating means for generating a sound only for a predetermined time from the start time when the momentary switch is operated is provided. An alarm for electric vehicles.