CN2335231Y - Contactless electric loudspeaker device - Google Patents
Contactless electric loudspeaker device Download PDFInfo
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- CN2335231Y CN2335231Y CN 98205738 CN98205738U CN2335231Y CN 2335231 Y CN2335231 Y CN 2335231Y CN 98205738 CN98205738 CN 98205738 CN 98205738 U CN98205738 U CN 98205738U CN 2335231 Y CN2335231 Y CN 2335231Y
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Abstract
The utility model relates to a contactless electric loudspeaker device which comprises a power supply control portion, a voice-frequency signal generator, an impel primary stage and an impel driver stage. The utility model is provided with electricity power by the connection of the power supply control portion, the voice-frequency signal generator and the impel primary stage. An output end of the voice-frequency signal generator is connected with an input end of the impel primary stage; an output end of the impel primary stage is connected with an input end of the impel driver stage. The utility model has the advantages of stable operation, long service life, high safety and less power consumption, and can be directly matched and connected with various electric apparatus of vehicles.
Description
The utility model relates to a kind of electric horn, particularly, relates to automobile, the non-contact type electric horn device that uses on all kinds of motor vehicles such as motor.
Existing mechanical contact class electric horn, because when ringing loudspeaker, the electric current of make-and-break that flows through mechanical contact is very big, so these class loudspeaker are short serviceable life, reliability is low.And even in order to improve its serviceable life, also will use noble metal on the mechanical contact of relay, for example platinum waits and makes the contact, thereby cost is also high.
The purpose of this utility model is exactly to develop novelly in order to overcome the above-mentioned shortcoming in the existing loudspeaker, and its objective is provides a kind of safe and reliable, working stability, the non-contact type electric horn device of little power consumption.
The purpose of this utility model is achieved through the following technical solutions.This non-contact type electric horn device comprises: power supply control section, audio signal generator, promotion is elementary and promote drive(r) stage, above-mentioned power supply control section and above-mentioned audio signal generator and elementary connection of promotion, the output terminal of above-mentioned audio signal generator is connected to the elementary input end of above-mentioned promotion, and the elementary output terminal of above-mentioned promotion is connected to the input end that promotes drive(r) stage.
At first be to select for use in design a kind ofly can produce square-wave signal, and this circuit power consumption that produces square wave is very little, generally is controlled at below several milliamperes.Like this, must make the square-wave signal of its generation very weak, obviously it can not be in order to the drive(r) stage of direct propelling coil.For this reason, the utility model is between square wave signal generator and coil stimulating level, and it is elementary to have set up a promotion, and its weak square-wave signal amplitude can be improved, so as can with little Current Control promote progressive work disconnected.
The utility model has following advantage:
At first, owing to have function expansion input circuit, provide a power supply so the high potential signal that utilizes external electrical appliance to send here is given square-wave generator and promotion is elementary, as long as the load capacity of this power supply can reach a milliampere level.This is with the load capacity of automobile-used all kinds of electrical appliances (as steering indicating light, burglar alarm etc.), and the function extended terminal also belongs to small and weak load, thereby other vehicular electrical appliance life-span that connects is with it prolonged.
Secondly, the control mode of automobile-used electric horn power supply, generally be that negative pole end arrives the ground bonding by horn button, in order not change this control mode, the utility model is in parallel with function expansion importation, arranged a horn button connecting circuit that small and weak electric current just can be controlled, the working power of this part is to be provided by the positive source that connects drive coil, common formation or gate logic between button circuit that this small and weak electric current just can be controlled and the function expansion input circuit.
Also have, owing in the little current control circuit that connects button, have voltage stabilizing, interference protection measure, and this part also is to square-wave generator and the elementary power supply that provides is provided, so job stability of the present utility model is reliable, and the electric current that flows through wherein is small.Undoubtedly, this is to mission life that prolongs self and the button position of protecting automobile, and is all very effective.
Fig. 1 is the electrical schematic diagram of non-contact type electric horn device of the present utility model.
Fig. 2 is to use the circuit diagram of audio frequency square-wave generator one example in the electric horn device.
Below, be described with reference to the accompanying drawings embodiment of the present utility model.
The electrical schematic diagram of non-contact type electric horn device of the present utility model, as shown in Figure 1.At first, several connection terminals are described.Among the figure, A is the positive source connection terminal, and B is a function expansion connection terminal, and G is the connection terminal between pushbutton switch on the vehicle steering, and S is the negative pole end (that is, in fact earth terminal is exactly the bonding of bearing circle enclosure interior on the car) of power supply.
This non-contact type electric horn device comprises: power supply control section, audio signal generator, promotion is elementary and promote drive(r) stage.Above-mentioned power supply control section and audio signal generator and elementary connection of promotion, and controllably supply with small and weak electric current to it, the output terminal of above-mentioned audio signal generator is connected to and promotes elementary input end, to its output audio signal.Be connected to the input end that promotes drive(r) stage and promote elementary output terminal, promote to go in the drive(r) stage delivering to through the sound signal after amplifying, make the promotion drive(r) stage carry out switch, the electric current of make-and-break of the horn coil of flowing through carries out the adhesive action, drives loudspeaker and sends sound equipment.
This power supply control section is exactly the part that with dashed lines sections out among Fig. 1.This part is made up of current control circuit and function expansion input circuit or door is patrolled and is seized circuit, and can be by promoting the power supply of drive(r) stage power supply.Current control circuit comprises: resistance R 1 and R2, voltage stabilizing diode DW, transistor T 1 and diode D1 and D2.Wherein, be connected in parallel to resistance R 1, voltage stabilizing diode DW and capacitor C 1 between the base stage of G point and transistor T 1, resistance R 2 is connected between the base stage and collector (or A point) of transistor T 1.The emitter of transistor T 1 is connected to the positive terminal of diode D1, and the positive terminal of the diode D2 of function expansion input circuit connects the B point, and the negative pole end of the diode D1 of diode D2 and little current control circuit is connected to each other.During horn button on connecting car body, resistance R 1 in the current control circuit and the dividing potential drop effect of R2 in conjunction with the pressure stabilization function of voltage stabilizing diode DW, provide a stable and small and weak magnitude of voltage of electric current to the collector of transistor T 1.Resistance R 2 and capacitor C 1 have been formed the filter network of filter out power clutter (producing spark as consumers such as generator, ignition distributors disturbs).Diode D1 and D2 composition two or gate logic collect mutual protection again simultaneously, and buffer action.Like this, audio signal generator and promote elementary transistor T 1 just can obtain from the negative contacts C of diode D1 and D2 one stable, the working power of no noise jamming makes the stability of the audio tones that loudspeaker send that assurance arranged.
Audio signal generator as shown in Figure 2, for example can be a kind of audio frequency square-wave generator, and specifically, resistance R 4～R10, capacitor C 2 and C2 and transistor T 2 and T3 constitute.The end of contact C connecting resistance R4, its other end connecting resistance R6, R5 and R7.The collector of another termination transistor T 4 of resistance R 6, the collector of another termination transistor T 5 of resistance R 7.The other end connecting resistance R8 of resistance R 5 is to the base stage of transistor T 4, and the other end series resistor R10 of same resistance R 5 and R9 are to the base stage of transistor T 5.Capacitor C 2 is connected between the base stage of the collector of transistor T 4 and transistor T 5, and capacitor C 3 is connected between the base stage of the collector of transistor T 5 and transistor T 4.The emitter of transistor T 4 and T5 is connected and is another power supply termination S point, and the current collection of transistor T 5 is output terminal D very.Like this, in fact just constituted a kind of monostable oscillating circuit of routine,, therefore its principle of work is repeated no more as audio signal generator.
In addition, audio signal generator also can be used integrated circuit block, and for example CW9561, KD-153 and KD-9561 wait and send alarm sound.
Promote elementaryly to constitute by resistance R 3 and transistor T 2.Resistance R 3 is connected between the collector of contact C and transistor T 2, and its emitter meets the negative pole end S of power supply and base stage is connected with the output terminal D of audio-frequency generator.In addition, resistance R 3 promotes the elementary power supply except that giving, and the while provides bias voltage for the promotion drive(r) stage of coil again.The effect of transistor T 2 is elementary as promoting, and the small and weak signal that audio signal generator is sent here is amplified, and rises to suitable amplitude, as the switching signal that promotes drive(r) stage.
Promote drive(r) stage and have complex pipe T3 and horn coil L.Complex pipe T3 is made of transistor Q1 and transistor Q2.This complex pipe T3 also can adopt Darlington transistor.The collector of complex pipe T3 with receive positive source connection terminal A after horn coil L is connected.The emitter of transistor Q2 meets the negative pole end S of power supply.The base stage of complex pipe T3 (that is transistor Q1) is connected with the collector that promotes elementary transistor T 2.
In addition, mandatory declaration is, when the function extended terminal did not have the noble potential input or the switch that touches the button not to be switched on, audio signal generator and the elementary transistor T 2 of promotion just can not obtain power supply, did not also just have switching signal to deliver to the promotion drive(r) stage of complex pipe T3 and horn coil L composition.At this moment, though the power supply of this part horn coil L successively still because complex pipe is in cut-off state, so the coil L of loudspeaker can not carry out the adhesive action, just can not send sound equipment yet.
In addition, the utility model if with little current control circuit in the empty frame and or two parts of the function expansion input circuit of door, draw back breaking circuit, then also can be used for the position of existing loudspeaker double-tone relay so that with the shared remainder of two basses.
Claims (6)
1, a kind of non-contact type electric horn device comprises: power supply control section, audio signal generator, promotion is elementary and promote drive(r) stage, above-mentioned power supply control section and above-mentioned audio signal generator and elementary connection of promotion, the output terminal of above-mentioned audio signal generator is connected to the elementary input end of above-mentioned promotion, and the elementary output terminal of above-mentioned promotion is connected to the input end that promotes drive(r) stage.
2, loudspeaker device according to claim 1 is characterized in that: above-mentioned power supply control section is made up of current control circuit and function expansion input circuit or door is patrolled and is seized circuit.
3, loudspeaker device according to claim 2, it is characterized in that: above-mentioned current control circuit comprises: resistance R 1 and R2, voltage stabilizing diode DW, transistor T 1 and diode D1, be connected with above-mentioned resistance R 1, above-mentioned voltage stabilizing diode DW and above-mentioned capacitor C 1 in parallel on the base stage of above-mentioned transistor T 1, above-mentioned resistance R 2 is connected between the base stage and collector of above-mentioned transistor T 1, and the emitter of above-mentioned transistor T 1 is connected on the positive terminal of minority diode D1.
4, loudspeaker device according to claim 1 is characterized in that: above-mentioned audio signal generator is the audio frequency square-wave generator.
5, loudspeaker device according to claim 1 is characterized in that: above-mentioned promotion drive(r) stage is made of complex pipe T3 and horn coil L, the collector of the above-mentioned complex pipe above-mentioned horn coil L that connects.
6, loudspeaker device according to claim 5 is characterized in that: above-mentioned complex pipe T3 is a Darlington transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98205738 CN2335231Y (en) | 1998-06-10 | 1998-06-10 | Contactless electric loudspeaker device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98205738 CN2335231Y (en) | 1998-06-10 | 1998-06-10 | Contactless electric loudspeaker device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2335231Y true CN2335231Y (en) | 1999-08-25 |
Family
ID=33962056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98205738 Expired - Fee Related CN2335231Y (en) | 1998-06-10 | 1998-06-10 | Contactless electric loudspeaker device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2335231Y (en) |
-
1998
- 1998-06-10 CN CN 98205738 patent/CN2335231Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |