Why does the car horn suddenly keep sounding?
1 Answers
The car horn suddenly keeps sounding because the touch-sensitive chip inside has become loose or detached, coming into contact with the switch, causing it to sound continuously. Generally, when pressing the horn, avoid applying excessive force. Some people develop a habit of pressing too hard, leading to damage. Function of the car horn: The horn is the audio signaling device of a car. During driving, the driver uses it to emit necessary sound signals as required or regulated, warning pedestrians and alerting other vehicles to ensure traffic safety. It is also used for urging movement and transmitting signals. Working principle of the car horn: The car electric horn produces sound through the vibration of a metal diaphragm. It consists of an iron core, magnetic coil, contacts, armature, diaphragm, etc. When the driver presses the horn switch, current flows through the contacts to the coil, generating magnetic force that pulls down the armature, forcing the diaphragm to move. The movement of the armature disconnects the contacts, interrupting the current and causing the magnetic force to disappear. The diaphragm, along with the armature, returns to its original position due to its own elasticity and the spring plate, closing the contacts again and allowing current to flow through the coil to generate magnetic force, repeating the process. This cycle continues, causing the diaphragm to vibrate repeatedly and produce sound. The resonance board, rigidly connected to the diaphragm, ensures smooth vibration and produces a more pleasant sound (i.e., the principle of an electromagnet).
