Automobile loudspeaker based on reduction of contact impedance

Abstract

The invention provides an automobile loudspeaker based on reduction of contact impedance. The loudspeaker comprises a loudspeaker shell, a vibrating diaphragm, a resonance sheet, a movable iron core,a magnetic coil, a fixed iron core tube, a vibrating sheet and a contact conductive mechanism, wherein the contact conductive mechanism comprises a contact contact mechanism and a positioning dehumidification mechanism, the vibrating diaphragm is fixedly connected to the inner wall of the loudspeaker shell, and the surface of the resonance piece is fixedly connected with the surface of the vibrating diaphragm. The loudspeaker relates to the loudspeaker field. The automobile loudspeaker based on contact impedance reduction aims at two reasons for contact impedance generation. A contact and a structure near the contact are specially improved; a traditional contact power connection mode is changed, and circulation air flow is strictly processed, so that the problems that a common loudspeakercontact is simple in structure and single and unchanged in contact point, contact impedance is easily generated at the contact position of the contact due to electric shock cauterization or fog corrosion after the loudspeaker is used for a long time at high frequency, and normal use of the loudspeaker is affected are effectively solved.

Description

technical field [0001] The invention relates to the technical field of loudspeakers, in particular to a car loudspeaker based on reducing contact impedance. Background technique [0002] Car speakers are also called car horns. Car horns are mainly divided into two types: air horns and electric horns. At present, during the use of electric horns, electromagnetic coils are mainly used to vibrate the metal diaphragm to produce sound. However, in the current working process of electric horns , the electric horn is easy to fail because of the contact impedance. The main reasons for the contact impedance are as follows: [0003] On the one hand, pressing the horn for a long time will easily cause the contact of the horn to be ablated and produce impedance, the current flowing through the electromagnetic coil will weaken, and the decrease in electromagnetic suction will not be able to attract the armature to drive the diaphragm to vibrate normally, resulting in hoarse or even no so...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a car speaker based on reducing the contact impedance, which solves the problem that the contact structure of the general speaker is simple, the contact point is single and unchanged, and the speaker is easy to be damaged at the contact point when the speaker is used for a long time at high frequency. The contact impedance caused by electric shock burning or fog corrosion affects the normal use of the speaker

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