JPH074075Y2 - Non-power onomatopoeia generator - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is provided in a traveling toy such as a small automobile toy to generate an electronic imitation sound such as a pseudo engine sound according to the rotation speed of a wheel, a drive shaft, etc. without a power source. It relates to an onomatopoeia generator.

[Prior art]

Known as a device of this type is Shoji 60-39040, "Voice generator for power toys," which detects the number of revolutions of the drive wheel by a pulse and converts it into a pulse train that corresponds to the number of revolutions. Is applied to the pulse oscillating circuit to electronically generate a pseudo engine sound whose pitch and strength change according to speed. However, this is provided in a power toy such as a car with a power supply, and no proposal has been made for a running toy without a power supply, and the pulse oscillation circuit is controlled by a DC voltage converted from a pulse train. As the high and low levels are changed, it does not approach the actual engine sound.

[Purpose of device]

In view of the above points, the present invention proposes an onomatopoeia generation device which is used for a small traveling toy that does not have a power supply and produces a more natural onomatopoeic sound such as an artificial engine sound as an electronic sound, the intensity being proportional to the rotation speed. Is.

[Constitution of device]

The present invention is an artificial sound generating device for a small traveling toy, which generates a pseudo sound such as a pseudo engine sound whose pitch and strength change according to the traveling speed, and generates power at a frequency corresponding to the rotation of the input shaft of the traveling body. Generator, a rectifier circuit that rectifies the output of the generator, a sounding circuit to which the output of the rectifier circuit is applied, a constant voltage circuit that makes the output of the rectifier circuit a constant voltage, and a generator of the generator. A waveform rectifier circuit that shapes the output and sends it to the sound generation control means, a sound generation control means to which the output of the constant voltage circuit is applied and the output of the waveform shaper circuit enters, and a sound generation means to generate sound by the output of the sound generation control means. It is characterized by having and.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

Generator 1 driven by a power system such as a drive shaft (not shown)
Is connected in parallel to the rectifier circuit 2 and the waveform shaping circuit 4.

The output of the rectifier circuit 2 is connected in parallel to the constant voltage circuit 3 and the power supply terminal 64 of the sounding circuit 6.

The output of the constant voltage circuit 3 is connected to the power supply terminal 52 of the tone generation control means 5.

The output of the waveform shaping circuit 4 is connected to the control terminal 51 of the tone generation control means 5.

The output of the tone generation control means 5 is connected to the tone generation circuit 6.

An alternator as the generator 1, a full-wave rectifier 21 as the rectifier circuit 2, and a Zener diode as the constant voltage circuit 3.
A circuit including a parallel circuit of 31 and a resistor 32, a parallel circuit of a Zener diode 41 and a resistor 42 as a waveform shaping circuit 4, a power supply terminal 52 and a control terminal 51 as a sound generation control means 5, and an oscillation output according to an input frequency, a sound generation circuit. 6, a resistor 62 and a parallel circuit of a sounding body 61 such as a piezoelectric speaker and a switching transistor 63 are used. Of course this circuit is 1
It is an example, and it may be replaced with one having the same function.

The operation is such that when the generator 1 is driven, the AC power generation output signal is rectified by the rectifier 21.
Is subjected to full-wave rectification, smoothed by a capacitor C, and applied as a power source input for driving the sounding circuit 6. Meanwhile, rectifier 21
Is also input to the constant voltage circuit 3 to be a voltage suitable for the sound generation control means 5 and applied as a drive power input for the sound generation control means 5.

Further, the AC power generation signal output from the generator 1 is shaped by the waveform shaping circuit 4 and input to the control terminal 51 of the sound generation control means 5. At this time, since the power source voltage is applied to the sound generation control means 5, a pulse having a frequency preset according to the input frequency is output and applied to the base of the transistor 63 via the resistor. Since the rectified generated voltage is applied to the sounding circuit 6, the transistor 63 is turned on / off in synchronization with the input pulse, and the sounding body 61 is driven to generate a pseudo sound having a frequency equal to the input pulse, that is, a pitch. To do.

Since the rectified power generation voltage is directly applied as the power source of the sound generation circuit 6, the strength of the sound to be generated is completely proportional to the power generation voltage and a sound that is close to the actual sound can be generated, especially when the rotation speed is large. There is no limitation of, the loud sound can be surely produced than before, and the circuit is not overpowered.

The application is not limited to automobile toys, and it is also used for various toys such as airplanes and ships, and it can also be used for toys having a driving source such as Zenmai, which can generate a running onomatopoeia with a strength corresponding to rotation.

In addition, if the sound generation control means is configured to output a pulse of a low frequency when there is no input at the control terminal and a voltage is applied to the power supply terminal, and the capacity of the capacitor C in FIG. When the rotation is stopped, a low-frequency artificial sound such as an idling sound can be generated by the capacitor C. However, since it does not have a power source, it is impossible to sound for a long time.

[Effect of device]

Since the present invention is configured as described above, it can produce a more natural artificial sound such as a pseudo engine sound particularly when used in a small running toy such as a minicar that does not have a power source. In particular, the sound is completely proportional to the rotation speed. Therefore, it is possible to provide a non-power source onomatopoeic sound generator that produces the effect of producing an onomatopoeia close to the actual one and making the toy interesting as well.

[Brief description of drawings]

FIG. 1 is a circuit block diagram of an embodiment of the present invention, and FIG. 2 is a circuit configuration diagram thereof. 1 ... Generator, 5 ... Sound control means, 6 ... Sound circuit

Claims (1)

[Scope of utility model registration request] 1. A generator for generating power at a frequency according to the rotation of an input shaft of a traveling body, a rectifier circuit for rectifying the output of the generator, and a sounding circuit to which the output of the rectifier circuit is applied. A constant voltage circuit that makes the output of the rectifier circuit a constant voltage, a waveform shaping circuit that shapes the output of the generator and sends it to the sound generation control means, and an output of the constant voltage circuit to which the output of the constant voltage circuit is applied. A non-power-source onomatopoeic generator provided with a sound output control means and a sound output means which outputs sound by the sound output control means.