Electronic snail horn

Abstract

The utility model discloses an electronic snail horn, and provides a novel high-voltage electronic snail horn by designing a clamping circuit, a fundamental frequency circuit, a control circuit, a driving circuit and an induction circuit to form a novel working circuit, so as to meet the requirements of high-efficiency, stable and adaptive high-voltage electronic horns. After the working circuit is powered on, the induction coil is controlled to adsorb an external snail horn structural member, and the effect of horn sounding is achieved. The product has the characteristics of small current, small inductance coil diameter, small wire harness, more compact structure, safety and reliability in use and capability of prolonging the service life of the loudspeaker.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts, specifically an electronic snail horn. Background Technology

[0002] With the development of various vehicle types, such as new energy vehicles whose power systems output high voltage, there are more diverse demands on the performance and voltage compatibility of horns. However, traditional horns operate at low voltages and are unsuitable for such high-voltage environments. Therefore, existing solutions on the market are insufficient in terms of voltage compatibility, sound quality, and stability, making it difficult to meet the market's demand for efficient, stable, and high-voltage compatible electronic horns. Currently, there is a lack of 48V electronic horns on the market; therefore, there is an urgent need to develop an electronic snail horn to meet the pressing needs of this technology and better adapt to diverse vehicle models. Utility Model Content

[0003] In view of the defects and deficiencies of the prior art, the purpose of this utility model is to provide a high-voltage electronic snail horn by designing a new working circuit consisting of a clamping circuit, a base frequency circuit, a control circuit, a drive circuit, and a sensing circuit, so as to meet the needs of a high-efficiency, stable, and high-voltage compatible electronic horn.

[0004] The technical solution adopted by this utility model to achieve the above objectives is as follows:

[0005] An electronic snail horn includes a working circuit and a snail horn connected thereto; the working circuit includes a clamping circuit, a control circuit, a drive circuit, and a sensing circuit connected in sequence, the clamping circuit is also connected to the control circuit through a base frequency circuit, and the snail horn is provided next to the sensing circuit; when the working circuit is energized, it generates a magnetic field to make the snail horn produce sound.

[0006] The input terminal of the clamping circuit is connected to the +48V power supply of the vehicle power supply system through a wiring harness. The input terminal of the clamping circuit is also connected to resistor R1 and Zener diode D1 in sequence and then grounded to GND. The output terminal of the clamping circuit is led out from resistor R1 and Zener diode D1 to output +12V power to the base frequency circuit.

[0007] The baseband circuit input terminal is connected to the +12V output of the clamping circuit. The baseband circuit input terminal is then connected in sequence to resistor R3, triangular wave branch, capacitor C1, and grounded to GND. The two ends of the triangular wave branch are led out as the baseband circuit output terminal to output triangular wave signal, which is connected to the control circuit input terminal.

[0008] The triangular wave branch includes a bidirectional diode T1 and resistors R4 and R5 connected in series with its two output terminals, respectively.

[0009] The control circuit includes a control chip U1 and its peripheral circuits. The R pin and VCC pin of the control chip U1 are both connected to the input terminal of the control circuit. The input terminal of the control circuit is also grounded to GND through capacitor C2. The DIS pin of the control chip U1 is connected to the input terminal of the triangular wave branch of the base frequency circuit. The TRIG and THR pins are both connected to the output terminal of the triangular wave branch of the base frequency circuit. The Vo pin and Cvout pin are led out as the output terminal of the control circuit and connected to the input terminal of the drive circuit. The Cvout pin is also grounded to GND through capacitor C3 and resistor R7 in parallel. The GND pin is grounded.

[0010] The control chip U1 is a 555 chip.

[0011] The input terminal of the drive circuit is grounded to GND after being divided by resistors R8 and R9 in sequence. A wire is led out between resistors R8 and R9 to connect to electronic switch T2 and then to the induction circuit.

[0012] The electronic switch T2 uses an N-channel MOSFET. The gate G of the N-channel MOSFET is connected between resistors R8 and R9. The source S of the N-channel MOSFET is grounded to GND. The drain D of the N-channel MOSFET serves as the output terminal of the drive circuit and is connected to the sensing circuit.

[0013] The induction circuit uses an inductor coil L, with the wire diameter of the inductor coil L between 0.3mm and 0.5mm and the number of turns between 300 and 500.

[0014] The inductor L of the induction circuit generates an electromagnetic force that attracts the iron core of the snail horn, causing the diaphragm inside the snail horn connected to the iron core to vibrate and produce sound.

[0015] This utility model has the following beneficial effects and advantages:

[0016] 1. The high-voltage electronic snail horn of this utility model has a small current, which can improve the safety and reliability of the horn's operation and extend its service life.

[0017] 2. The high-voltage electronic snail horn of this utility model has a thinner inductor coil and a thinner wire harness, resulting in a more compact structure, but it is still safe and reliable to use.

[0018] 3. The high-voltage electronic snail horn of this utility model is no longer limited to the current 12V power supply environment in automobiles, and its application prospects are more extensive. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is the circuit schematic diagram of this utility model. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific implementation methods of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the utility model. Therefore, this utility model is not limited to the specific implementations disclosed below.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0023] This utility model provides an example of a 48V electronic snail horn.

[0024] like Figure 1 As shown, an electronic snail horn includes a working circuit and a snail horn connected thereto. The working circuit includes a clamping circuit, a control circuit, a drive circuit, and a sensing circuit connected in sequence. The clamping circuit is also connected to the control circuit via a baseband circuit. The snail horn is located next to the sensing circuit. The internal clamping circuit clamps the vehicle's power supply voltage to 12V. The baseband circuit generates a triangular wave with a specific frequency, which is transmitted to the control circuit. The control circuit processes this into a PWM signal output. When the PWM signal is high, the electronic switch T2 of the drive circuit is turned on; when the PWM signal is low, the electronic switch T2 of the drive circuit is turned off. When the electronic switch T2 is on, it controls the inductor coil L of the sensing circuit to generate electromagnetic force, controlling the external snail horn to emit sound.

[0025] like Figure 2 The diagram shown is a schematic of a high-voltage electronic snail horn, and the connection relationships of each component branch are as follows.

[0026] Clamping circuit:

[0027] The circuit structure is as follows: the input terminal of the clamping circuit is connected to the +48V power supply of the vehicle's power supply system via a wiring harness. The input terminal of the clamping circuit is then connected in sequence to resistor R1 and Zener diode D1 before being grounded (GND). The output terminal of the clamping circuit is then led out from between resistor R1 and Zener diode D1. After power-on, the +48V supply voltage is reduced to +12V through resistor R1 and Zener diode D1, and then connected to the control circuit and baseband circuit.

[0028] The working principle is to clamp the external power supply voltage to a voltage value suitable for the snail speaker's operation, ensuring a stable output voltage even when the input voltage fluctuates. This reduces the damage caused by voltage fluctuations to electronic components and even affects the speaker's sound production, such as sound distortion and volume fluctuations.

[0029] Baseband circuit:

[0030] The circuit structure is as follows: the input terminal of the baseband circuit is connected to the +12V output of the clamping circuit. The input terminal of the baseband circuit is then connected to resistor R3, the triangular wave branch, and capacitor C1 in sequence before being grounded to GND. The triangular wave branch includes bidirectional diode T1 and resistors R4 and R5 connected in series with its two output terminals respectively. Wires are led out from both ends of the triangular wave branch as the output terminal of the baseband circuit and connected to the input terminal of the control circuit.

[0031] The working principle involves generating oscillations through the internal circuit structure, producing a triangular wave trigger signal with a specific frequency and waveform, which is transmitted to the control circuit to trigger its operation. Resistors R4 and R5 adjust the duty cycle from 20% to 50%, thereby reducing the current.

[0032] Control circuit:

[0033] The circuit structure consists of a control chip U1 and its peripheral circuits. Specifically, the R and VCC pins of the control chip U1 are connected to the input terminal of the control circuit, which is also grounded to GND via capacitor C2. The DIS pin of the control chip U1 is connected to the input terminal of the triangular wave branch of the baseband circuit, and the TRIG and THR pins are connected to the output terminal of the triangular wave branch of the baseband circuit. The Vo and Cvout pins are led out as the output terminals of the control circuit and connected to the input terminal of the drive circuit. The Cvout pin is also grounded to GND via capacitor C3 and resistor R7 in parallel. The GND pin is grounded to GND. The control chip U1 uses a 555 timer.

[0034] The working principle involves the control circuit being connected to the baseband circuit and clamping circuit. It processes the signal transmitted from the baseband circuit and outputs a PWM signal to control the drive circuit. Specifically, the triangular wave trigger signal from the baseband circuit is input to the TRIG and THR pins of the 555 chip. The 555 chip internally shapes the triangular wave into a PWM square wave, which is then output to the drive circuit through the Vo pin. Capacitors C2 and C3 enhance the stability of the chip's operation, while resistors R2 and R7 provide the control voltage for the chip's operation.

[0035] Drive circuit:

[0036] The driving circuit is as follows: the input terminal of the driving circuit is grounded to GND after being divided by resistors R8 and R9 in sequence. A wire is led out between resistors R8 and R9 and connected to the sensing circuit through electronic switch T2. Electronic switch T2 is an N-channel MOSFET. The gate G of the N-channel MOSFET is connected between resistors R8 and R9. The source S of the N-channel MOSFET is grounded to GND. The drain D of the N-channel MOSFET serves as the output terminal of the driving circuit and is connected to the sensing circuit.

[0037] The working principle is that the control circuit outputs a PWM signal to control the on / off state of the electronic switch T2. Specifically, when the Vo pin of the 555 chip outputs a high level PWM signal, the N-channel MOSFET is turned on, and when the PWM signal is low, the N-channel MOSFET is turned off.

[0038] Induction circuit:

[0039] The induction circuit uses an inductor coil L. To match the appropriate electromagnetic force and enable the speaker to achieve a certain sound pressure level, the wire diameter for winding the inductor coil L is between 0.3mm and 0.5mm, and the number of turns is between 300 and 500.

[0040] Working principle: The drive circuit outputs a PWM signal to control the inductor coil L of the sensing circuit to generate an electromagnetic force. The electromagnetic force attracts the iron core of the snail horn set on the outside, causing the diaphragm inside the snail horn connected to the iron core to vibrate, thus achieving the effect of normal sound production.

[0041] In this example, resistors R1 to R9 are surface mount resistors, and capacitors C1 to C3 are ceramic capacitors.

[0042] The features of this invention are low current, thin inductor wire diameter, and thin wire harness, which can improve the life of the speaker, make the structure more compact and small, and can be adapted to a wider range of car models.

[0043] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. An electronic snail horn, characterized in that, The working circuit comprises a clamping circuit, a control circuit, a driving circuit and an induction circuit connected in sequence, the clamping circuit is further connected to the control circuit through a fundamental frequency circuit, and the induction circuit is provided with the snail horn.

2. An electronic snail horn according to claim 1, characterized in that The input end of the clamping circuit is connected to a +48V power supply of an automobile power supply system through a wire harness, and the input end of the clamping circuit is further connected to a resistor R1, a stabilizing diode D1 and then to a ground GND in sequence, and a +12V power supply is output from the output end of the clamping circuit to the fundamental frequency circuit.

3. An electronic snail horn according to claim 1, wherein The input end of the fundamental frequency circuit is connected to the +12V output by the clamping circuit, and the input end of the fundamental frequency circuit is further connected to a resistor R3, a triangular wave branch and a capacitor C1 and then to the ground GND in sequence, and a triangular wave signal is output from the output end of the fundamental frequency circuit as the input end of the control circuit.

4. An electronic snail horn according to claim 3, wherein The triangular wave branch comprises a bidirectional diode T1 and resistors R4 and R5 connected in series with two output ends of the bidirectional diode T1 respectively.

5. An electronic snail horn according to claim 3, wherein The control circuit comprises a control chip U1 and a peripheral circuit thereof, the R pin and the VCC pin of the control chip U1 are connected to the input end of the control circuit, and the input end of the control circuit is further connected to the ground GND through the capacitor C2; the DIS pin of the control chip U1 is connected to the input end of the triangular wave branch of the fundamental frequency circuit, and the TRIG pin and the THR pin are both connected to the output end of the triangular wave branch of the fundamental frequency circuit; the Vo pin and the Cvout pin are output as the output end of the control circuit and connected to the input end of the driving circuit, and the Cvout pin is further connected to the ground GND in parallel through the capacitor C3 and the resistor R7; and the GND pin is grounded.

6. An electronic snail horn according to claim 5, wherein, The control chip U1 is a 555 chip.

7. An electronic snail horn according to claim 1, wherein The input end of the driving circuit is connected to the ground GND through the resistors R8 and R9 in sequence, and a lead wire is drawn between the resistors R8 and R9 to connect the electronic switch T2 and then the induction circuit.

8. An electronic snail horn according to claim 7, characterized in that The electronic switch T2 is an N-channel MOS tube, the gate G of the N-channel MOS tube is connected between the resistors R8 and R9, the source S of the N-channel MOS tube is grounded, the drain D of the N-channel MOS tube is connected to the induction circuit as the output end of the driving circuit.

9. An electronic snail horn according to claim 1, wherein, The induction circuit adopts an inductor coil L, the wire diameter of the inductor coil L is between 0.3mm and 0.5mm, and the number of turns is between 300 turns and 500 turns.

10. An electronic snail horn according to any one of claims 1-9, characterized in that The inductor coil L of the induction circuit generates an electromagnetic force to attract the iron core of the snail horn, so that the membrane connected to the iron core in the snail horn vibrates to produce sound.

Images