JPS5962896A - Duplex generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION For example, when a large trunk or the like turns left, pedestrians,
This invention relates to a two-tone emitting device that can be used in left turn alarms, etc. that emit a warning sound when turning left in order to prevent accidents involving two-wheeled vehicles.

The flasher is activated when turning left as a left turn warning! lil
＋ It is well known that the police officer makes a banging sound, but the police officer'Fl
The iR is required to be easily distinguishable from other alarms such as horns and rear buzzers.

SUMMARY OF THE INVENTION The object of the present invention is to solve the problems mentioned above and to provide a simple and inexpensive double-tone generating device that can produce #8i tones as double-tones and J-tones.

An example will be described below.

In FIG. 1, 40 is a battery, 41 is a well-known flage, and a tri-relay. When the blinker switch 25 is turned on to either the left or right side, the internal relay contact is turned ON or OFF.
F and left and right blinker lamps (flasher lamps) 28
．． 30 is now blinking/υ. Reference numerals 26 and 27 are hazard switches, and when these are turned on at the same time, the left and right blinker lamps 28.3 (l) flash at the same time.

24 is a lighting switch that is turned on at night.
29 +J An example is a tail lamp. 100 is a double tone generation circuit, and power supply terminals 7-1-,,r? When the positive voltage of battery 4 () is applied to the terminal 41-. No sound is produced when a positive voltage is applied to the L and R terminals.

4, when the blinker switch 25 is turned to the left and the blinker lamp 28 is turned on i1, a double beep is emitted, when it is turned off, a sound is emitted, and when it is turned on again, a double beep is emitted repeatedly. , 25 are Wincus Inochi, 251 is a ++J moving contact, and 252 and 253 are fixed contacts on the left-turn and right-turn sides, respectively. 26 and 27 are hazard switches, and 24 is a lighting switch.

First, during the daytime (when the lighting switch is OFF) turn on the left turn switch (251 and 252 are short-circuited), and current flows through the path from capacitor knee resistor 2 to transistor 3)
・Ransistor 3 is ON, therefore l・Rancistar is OFF
F. At this time]・Rangimeta 13-16 → Resistor 12-
A charging current flows to the capacitor 20 through the path of the capacitor 20 (until charging is completed). l・Ran resistor 13
A buzzer consisting of the following emits a first reverberant sound.

When capacitor 1 finishes charging, transistor 3
is turned off, and therefore transistor 6 is turned on. As a result, a charging current flows through the transistors 13-16, the resistor 12, the capacitor 8, and the transistor 6 (until the capacitor 8 is charged), during which time a second reverberation sound is generated.

Since the lighting switch 24 is turned on at night,
Since the current flowing through the coil 22 is eliminated and the current flowing through the coil 7 is restricted by the resistor 19, the sound pressure decreases compared to daytime.

Also, when bar lead, switches 26 and 27 are turned on at the same time.
Therefore, the left turn alarm circuit ■ generates a voltage difference of 1 between terminals 00 and R, so there is no L7, so it does not operate.

This embodiment has the advantage of being less susceptible to variations in the number of intermittent flashers, since the interval between two consecutive tones is determined by: +1-IJ1.

In this way, by combining with the existing flasher relay, the double tones are repeated at a predetermined interval, producing a unique sound with a very high alarm effect (e.g. ping ping... ping ping... ...Ping Ping) can be generated in a simple Q'+.

Also, in the drawings, ``(, 14, 15, 7, 9, 5° 4, tl' IC, resistor, 21, 11, 42) are diodes.

Reference numeral 17 denotes a W, LF river reactor, which is a well-known device that increases the amplitude of the piezoelectric element 20 by the back electromotive force generated in the reactor, thereby increasing the sound pressure.

Further, the resistor 18 is a resistor for temperature compensation of the transistor 16, and is also called a base leak resistor. To explain this effect, when the temperature of transistor 1G increases, the leakage current flowing from the emitter of transistor IG to the base increases, and this causes
6 may be turned ON by mistake.

In order to prevent this, a bypass current is passed through the base leak resistor 18 from the resistor 18 to the resistor J2 to the capacitor 10 to prevent malfunctions due to the leak current. Therefore, the resistance value of the resistor 18 must be set low, but if it is set too low, the capacitor 10 will be charged via the base leak resistor 18, so the base current of the transistor 16 immediately after the voltage is applied, The rise of the charging current of the capacitor 10 is reduced, the sound pressure generated from the piezoelectric element 20 of the sound generating device is reduced, and the tone is also improved.
'J' + There is a problem that the cutting becomes poor. Therefore, the daily resistance value of the base leak resistance must be appropriately selected.

Next, a second embodiment of the device of the present invention will be described. This second embodiment is a die for the circuit of FIG. 1 as shown in FIG.
It is simply an addition of t-F l 8 a.

The dimer 18a prevents the reverse current flowing in the path of tl (resistance I2→transistor 16's ＼-emitter/sound generating device acdle 17), thereby preventing the breakdown current between the base and emitter of the transistor 16. , has the effect of increasing the life span of the transistor 16.This will be described below.

Since the sound generating device has the accelerator (7), when the transistor 16 is switched from ON to OFF, the reactor 17 generates a back electromotive force. The direction of this back electromotive force is from the transistor 13 to the transistor 16.

As a reaction to this back electromotive force, the following 11111
1 tlW It was found that a 7IX current flows from the base emitter of the transistor 16 to the reactor 17. This current 71i also flows through the resistor 18, but there is a limit to how low the resistance value of the resistor 18 can be made as described above. Therefore, a breaktown current flows from the base of the transistor 16 to the emitter, and the transistor 16
f shorten life.

For this purpose, a diode 18a is provided to suppress the breakdown current. Note that this diode 18a
It goes without saying that they can also be arranged on the base side of the transistor 1G, between the transistor 13 and the reactor 17, etc.

As mentioned above, the second real Jlf of ff<2 figure! ! In this example, in a circuit in which a sounding device (including a normal electromagnetic buzzer) having a resistor portion having an interface is driven by a PNPI-transistor I6, a rough flake town current is passed from the base of the transistor 16 to the emitter. Since the blocking diametor 18a is provided, the life of the transistor can be extended.

The present invention can be used not only as a left turn alarm linked to the above-mentioned flashlight, but also as an alarm for the occurrence of an abnormality in a vehicle, for example. I
It can also be used for 1st class.

In addition, in each of the above embodiments, the transistor 13 and the piezoelectric element 2
0. An automatic oscillation piezoelectric sounding device composed of a pressure actuator 17 and the like is well known, and its operation will be omitted. Moreover, a normal electromagnetic buzzer or the like can be used as the sounding device.

As mentioned above, in the present invention, the amount of soil is simple, +7/
Since the configuration allows two consecutive sounds, or double sounds, to be generated, an alarm sound that is different from continuous sounds can be generated simply, so it is possible to generate a warning sound that is different from continuous sounds, so it is possible to generate a warning sound that is different from continuous sounds. This has the effect that the alarm means can be constructed at low cost.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the device of the present invention. δ diagram,
FIG. 2 shows a second embodiment J-i'! FIG. 1 is an electrical circuit diagram. 16...Transistor, 10...First capacitor,
8...Second capacitor, 6T...Delay switch circuit, +7...71 voltage application terminal. Agent Br Tanukishi Takashi Okabe

Claims (1)

[Claims] A first capacitor (■0) and a second capacitor (■0) connected to the base of a transistor (1G) for operating the fl1% signal circuit TSB.
The second capacitor (8) and the transistor (
16) and the second capacitor (8) via the base of
It is equipped with a delay switching circuit (6'1'') that flows a charging current of 7Ti, and when fftft conversion is applied, the charging current of the first capacitor (10) turns the l.
Nsa-υ, the transistor (16) is OFF L-r
The second capacitor (8) is charged by turning on the delay switching circuit (6T) from 1 to 2. 7 of n11 than the ON time of the L transistor (16) due to charging of 1 condenser (10).
After the 1i source voltage is applied, the delay switch 1 (
6T) is characterized in that the delay time until it turns on is lengthened. (2) The power supply voltage application terminal (L) to which the power supply voltage is applied is specially fitted with an intermittent voltage applied via a flasher relay (41).
A two-coupled generator according to item 1 of the scope of the request.