Automobile waterproof horn with balanced internal and external pressure

Abstract

The invention discloses an automobile waterproof horn with balanced internal and external pressure, which comprises a horn shell, a horn body, a first pressure balancing mechanism and a second pressure balancing mechanism. The horn body is fixedly mounted in the horn shell, and the horn shell is provided with a first air hole and a second air hole at an interval; the first pressure balance mechanism is located in the first air hole and comprises a first balance plate, a first torsional spring and a first baffle, and the second pressure balance mechanism is located in the second air hole and comprises a second balance plate, a second torsional spring and a second baffle. Due to the fact that the first balance plate and the second balance plate seal the first air hole and the second air hole, water cannot easily enter the horn shell to affect the horn body, and the waterproofness of the automobile waterproof horn with balanced internal and external pressure is improved.

Description

technical field [0001] The invention relates to the technical field of automobile horns, in particular to a waterproof automobile horn with internal and external pressure balance. Background technique [0002] The car electric horn is made of sound by the vibration of the metal diaphragm. The car electric horn is composed of the horn back cover assembly, the coil assembly, the plug seat assembly, the contact piece assembly and the vibrating piece assembly. When the driver presses the horn switch, the current passes through the contact assembly through the coil in the coil assembly, and the coil generates magnetic force to attract the armature of the vibrating plate assembly, forcing the sounding piece of the vibrating plate assembly to move, and the armature moves to disconnect the contact and interrupt the current. , the magnetic force of the coil disappears, the sounding piece returns to its original position with the armature under the action of its own elasticity and the...

AI Technical Summary

Problems solved by technology

Opening a pressure balance hole in the back cover of the speaker solves the problem of air pressure balance inside and outside the speaker, but affects the waterproof performance of the speaker. Water ingress will cause the circuit board inside the horn to be short-circuited and burned, and the exposed parts of the car with the horn, when the car is driving on a rainy day or on a road with accumulated water, the rain will splash on the horn, and the rain will flow into the back of the horn In the cover, it is easy to cause the circuit board inside the speaker to be short-circuited and burned

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