CN211858126U - A long-life anti-interference vehicle electric horn - Google Patents

Abstract

The utility model provides a long-life anti-interference vehicle electric horn, which comprises a basin-shaped structure main body and a diaphragm assembly assembled with the basin-shaped structure main body. There is an iron core, the inner side is provided with an armature, the coil is arranged on the periphery of the armature, and the circuit module is electrically connected with the coil, which includes an oscillation circuit module, a frequency division circuit module, a wave modulation circuit module and a power amplifier circuit module. With the power connection, the power amplifier module is connected with the coil. The vehicle electric horn of the utility model adopts a specially designed circuit module, and each component circuit module adopts the existing circuit module design and integrates together to form an integrated control circuit, the circuit structure is reasonable, the realization is easy and the reliability is high; The car electric horn does not need to be repeatedly contacted by mechanical contacts to realize the horn generation, and the service life is long; and the integrated circuit module has strong anti-electromagnetic interference ability.

Description

A long-life anti-interference vehicle electric horn

technical field

The utility model relates to the technical field of vehicle electronics, in particular to a vehicle electric horn with long service life and anti-interference.

Background technique

Electric horns are one of the essential parts of motor vehicles. They are used to issue alarm signals to remind drivers or passers-by in emergencies to avoid accidents. The electric horns currently used, especially those used in agricultural vehicles and electric vehicles, are generally mechanical contact type pot-shaped electric horns, which are composed of contact components, iron cores, coils and diaphragm components. The lower contact assembly, the coil is energized to generate a magnetic field, the iron core generates a magnetic force to attract the diaphragm assembly, and the diaphragm deforms and emits a sound; when the diaphragm moves to the iron core, the contact is out of contact with the coil, the coil is powered off, and the magnetic force of the iron core disappears. The diaphragm is reset, thus completing a sounding process. In the whole working process, the contact is a very critical component. The wear or oxidation of the contact will directly affect the energization of the coil, thereby affecting the working effect of the electric horn. For agricultural vehicles and electric vehicles with poor protection effect, the impact will be more Large, affecting the reliability and service life of the electric horn. In addition, the anti-electromagnetic interference capability of this mechanical contact-type electric horn is also relatively poor, and is easily interfered by electronic products carried by the driver.

Utility model content

Aiming at the shortcomings of the above-mentioned vehicle electric horns in the prior art, the purpose of the present invention is to provide a vehicle electric horn with long service life and anti-interference.

In order to achieve the purpose of the present utility model, the long-life anti-interference vehicle electric horn of the present utility model comprises a basin-shaped structural body and a diaphragm assembly assembled with the basin-shaped structural body, and the basin-shaped structural body comprises a metal shell. body, the rear end is provided with an iron core, the inner side is provided with an armature, the coil is arranged on the periphery of the armature, the circuit module is electrically connected with the coil, and the circuit module includes an oscillator circuit module and a frequency division circuit module connected with the oscillator circuit module. , a wave modulation circuit module connected with the frequency division circuit module and a power amplifier circuit module connected with the wave modulation circuit module, the oscillation circuit module is connected with the vehicle power supply through a switch, and the power amplifier module is connected with the coil.

Preferably, there is a thermally conductive and insulating rubber encapsulation structure on the periphery of the circuit module.

The beneficial effect of the utility model is that the vehicle electric horn adopts a specially designed circuit module, and each component circuit module adopts the existing circuit module design and integrates together to form an integrated control circuit, the circuit structure is reasonable, and it is easy to realize And the reliability is high; the manufactured vehicle electric horn does not need repeated contact of mechanical contacts to realize the horn generation, and the service life is long; and the integrated circuit module has strong anti-electromagnetic interference ability.

Description of drawings

The foregoing and other objects, features and advantages of the present invention will become apparent from the following detailed description in conjunction with the accompanying drawings. in:

1 is a schematic structural diagram of a basin-shaped body of a vehicle electric horn according to an embodiment of the present invention;

2 is a schematic structural diagram of a diaphragm assembly of a vehicle electric horn according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a circuit component module of the vehicle electric horn of the present invention.

Detailed ways

The structure and characteristics of the long-life anti-interference vehicle electric horn of the present utility model are described in detail below with reference to the accompanying drawings.

Referring to the schematic structural diagrams of the vehicle electric horn of the present invention shown in FIG. 1 and FIG. 2 , the vehicle electric horn includes a basin-shaped structure body 10 and a diaphragm assembly 20 assembled with the basin-shaped structure body 10 . The main body 10 of the basin-shaped structure includes a metal shell 11, an iron core 12 is arranged at the rear end of the said body, an armature 14 is arranged at the inner side, a coil 15 is arranged on the periphery of the armature 14, and the circuit module 16 is electrically connected to the coil 15, referring to FIG. 3 The circuit module 16 includes an oscillation circuit module 161, a frequency division circuit module 163 connected to the oscillation circuit module 161, a wave modulation circuit module 165 connected to the frequency division circuit module 163, and a power amplifier circuit connected to the wave modulation circuit module 165. Module 167 , the oscillation circuit module 161 is connected to the vehicle power supply through the switch 13 , and the power amplifier module 167 is connected to the coil 15 .

The working process of the vehicle electric horn of the present invention is as follows: after the switch 13 is turned on, the vehicle power supply supplies power to the oscillating circuit module 161, the oscillating circuit module 161 outputs the oscillating frequency, and the frequency is divided by the frequency dividing circuit module 163 to meet the electric horn. The frequency of the sound is adjusted by the wave modulation circuit module 165 to form a signal with a fixed frequency. After the power amplifier circuit module 167 amplifies the power, it enters the coil 15, and the iron core 12 generates a magnetic force to attract and reset the film according to the fixed frequency generated by the circuit module 16. The chip assembly 20 makes the electric horn sound.

In a preferred embodiment, as the core working module of the vehicle electric horn, in order to prevent the circuit module 16 from being affected by the outside world and ensure the reliability of its operation, a thermally conductive insulating rubber packaging structure 18 is provided on the periphery of the circuit module 16. .

In the circuit module of the electric horn in the above-mentioned embodiment, each component circuit module adopts the existing circuit module design and integrates together to form an integrated control circuit to achieve the purpose of the present utility model, the circuit structure is reasonable, easy to implement and high reliability; The manufactured car electric horn does not need to be repeatedly contacted by mechanical contacts to realize the horn, and has a long service life; and the integrated circuit module has strong anti-electromagnetic interference ability, avoiding external interference factors such as the interference of electronic products carried by the driver.

The present invention is not limited to the described embodiments, and those skilled in the art can still make some corrections or changes without departing from the spirit of the present invention, that is, the scope of disclosure. Therefore, the protection scope of the present invention is defined by the claims The scope of the book shall prevail.

Claims (2)

1. a long-life anti-interference vehicle electric horn, it is characterized in that, described vehicle electric horn comprises basin-shaped structure main body and the diaphragm assembly that cooperates with basin-shaped structure main body and assembles, and described basin-shaped structure The main body includes a metal shell, an iron core is arranged at the rear of the rear side, an armature is arranged on the inner side, the coil is arranged on the periphery of the armature, and the circuit module is electrically connected with the coil. A frequency division circuit module, a wave modulation circuit module connected with the frequency division circuit module, and a power amplifier circuit module connected with the wave modulation circuit module, the oscillation circuit module is connected with the vehicle power supply through a switch, and the power amplifier circuit module is connected with the coil. connect. 2 . The long-life anti-interference vehicle electric horn as claimed in claim 1 , wherein the circuit module has a heat-conducting and insulating rubber packaging structure on the periphery. 3 .

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