Magnetic circuit structure of a vehicle-mounted loudspeaker

Abstract

The invention relates to a magnetic circuit structure of a vehicle speaker. The magnetic circuit structure comprises a shell, an upper magnetic board, a second magnet, a first magnet, a middle magnetic boss, a short circuit ring and a screw, wherein the shell takes on a bowl shape; a through hole is arranged at a central axis of the bottom of the shell; the first magnet, the second magnet, the upper magnetic board, and the short circuit ring are all circular; the middle magnetic boss is a boss with a central axis through hole; the screw penetrates through the through hole of the shell; a studof the screw stands in the internal center of the shell; the first magnet, the middle magnetic boss, the second magnet and the upper magnetic board are installed in the shell in sequence from bottom to top; the boss of the middle magnetic boss is sheathed in the ring of the second magnet; the lower end of the central axis through hole of the middle magnetic boss is connected with the upper end ofthe stud; and the short circuit ring is bonded with the top horizontal plane of the boss of the middle magnetic boss. Due to the optimized design on the magnetic circuit, problems of poor heat dissipation of the speaker, serious magnetic leakage, and large distortion are solved, and lower low-frequency resonance frequency and higher acoustic pressure level are achieved.

Description

technical field [0001] The invention relates to a magnetic circuit structure of a loudspeaker, in particular to a magnetic circuit structure of a vehicle-mounted loudspeaker. Background technique [0002] With the rapid development of our country's economy, the high level of national consumption, and the continuous popularization of private cars, users have higher and higher requirements for car audio. However, as the speaker is used as a car entertainment device, the electro-acoustic knowledge involved is very complicated, and the car factory does not pay enough attention to the speaker. As a result, the car speaker has always been a low-cost product, and the sound effect is not flattering. The main principle of the loudspeaker is that the audio current cuts the magnetic force line to push the vibrating part to produce sound. The design of the magnetic circuit part is very important, which can be called the "engine" of the loudspeaker. In terms of technical performance, se...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a vehicle-mounted loudspeaker magnetic circuit design structure, through the optimized design of the magnetic circuit, solve the problems of poor heat dissipation, serious magnetic flux leakage, and large distortion of the loudspeaker, and achieve lower low-frequency resonance frequency and higher acoustics. pressure level

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