Vehicle-mounted loudspeaker voice coil position adjusting structure

Abstract

The invention relates to a vehicle-mounted loudspeaker voice coil position adjusting structure. The structure comprises a connecting piece, a positioning piece and a dustproof cap, a sound absorptioncotton and drum paper, an elastic corrugated plate, a voice coil and a basin frame, a magnetic circuit system assembly and the like. The first connecting piece and the second connecting piece are locked at the upper part of the first positioning piece. The dustproof cap is arranged between the second positioning piece and the third positioning piece. The dustproof cap is fixed through a third connecting piece. The outer side of the dustproof cap is arranged in the middle of the drum paper. The fourth positioning piece and the connecting screw rod form a screw transmission pair. The connectingscrew rod is arranged on the mounting base; the basin frame is arranged on the magnetic circuit system assembly. The mounting seat is mounted on the magnetic circuit system assembly, the lower end ofthe voice coil penetrates through the frame and is sleeved on a through hole of the magnetic circuit system assembly, the upper periphery of the drum paper is fixed on the frame, the lower portion ofthe drum paper is contacted with the upper portion of the voice coil, the through hole arranged at the geometric center of the elastic corrugated plate is sleeved on the upper portion of the voice coil, and the outer periphery of the elastic corrugated plate is fixed on the frame. According to the invention, various kinds of distortion can be reduced, and bass is more textured.

Description

technical field [0001] The invention relates to a vehicle-mounted speaker voice coil position adjustment structure, which belongs to the innovative technology of the vehicle-mounted speaker voice coil position adjustment structure. Background technique [0002] Electroacoustic design engineers usually design the voice coil at the balance position of the gasket, that is, the uniform area of ​​the magnetic field in the air gap of the magnetic circuit to obtain the best linear state and achieve the most perfect sound effect. The speaker can maintain a linear state when working at low power, but when the power increases and the amplitude increases, nonlinear distortion will begin to occur at low frequencies, mainly because the voice coil jumps out of the uniform area of ​​the magnetic field in the air gap of the magnetic circuit, so that the electromechanical conversion coefficient BL cannot Keeping constant, the linear relationship of the driving force effect F=BL*I is destroye...

AI Technical Summary

Problems solved by technology

The speaker can maintain a linear state when working at low power, but when the power increases and the amplitude increases, nonlinear distortion will begin to occur at low frequencies, mainly because the voice coil jumps out of the uniform area of ​​the magnetic field in the air gap of the magnetic circuit, so that the electromechanical conversion coefficient BL cannot Keeping constant, the linear relationship of the driving force effect F=BL*I is destroyed, resulting in nonlinear distortion

Due to the use of voice coil positioning fixtures, material deviations, production assembly and other limiting factors when manufacturing speakers, most speakers on the market cannot ensure that the voice coil is in a balanced position, resulting in asymmetrical BL characteristic curves

In addition, after the speaker is used for a long time, the recovery force of the suspension system gradually deteriorates, and the voice coil begins to deviate from the equilibrium position, which aggravates the nonlinear distortion of the speaker

The above distortions not only deteriorate the sound quality, but also seriously affect the listening effect, and the life of the speaker will also be seriously damaged in such a state for a long time.

[0003] The speakers in the existing market have the shortcomings of being unable to adjust the position of the voice coil due to structural reasons, resulting in unsatisfactory sound quality and low practicability

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