Panel Subwoofer

Abstract

The invention provides a flat plate type bass loudspeaker. The flat plate type bass loudspeaker comprises a vibration film, at least four driving units which are independent from one another, and an outer shell; the vibration film is in a flat plate shape and comprises a spherical roof and a bent ring portion, wherein the spherical roof is located in the center, and the bent ring portion is located on the edge; each driving unit comprises an independent voice coil unit and a magnetic circuit unit corresponding to each voice coil unit; the four voice coil units are respectively and fixedly attached to four corners of the spherical roof of the vibration film; the outer shell is provided with installation holes for containing and fixing the magnetic circuit units, and the upper side face of the outer shell is fixedly combined with the edge of the bent ring portion. The flat plate type bass loudspeaker further comprises a flexible printed circuit board (FPCB) connected with an internal circuit and an external circuit of the loudspeaker, the FPCB is installed on two sides of the outer shell, one side, close to the voice coil units, of the FPCB is in electric connection with voice coil leads, and another side, far away from the voice coil units, of the FPB is in electric connection with the external circuit of the loudspeaker. The flat plate type bass loudspeaker can resolve the problems that voice coils are heavy and magnet performance is surplus.

Description

technical field [0001] The present invention relates to the technical field of acoustics and electricity, and more specifically, relates to a flat-panel woofer. Background technique [0002] With the advancement of society and the development of technology, in recent years, the volume of electronic products such as televisions has been continuously reduced and thinner. The volume is continuously reduced and the thickness is also reduced, and the performance and consistency are continuously improved. [0003] The woofer with the traditional structure usually adopts a cone-shaped cone-shaped diaphragm. The center of the cone-shaped diaphragm contains a voice coil, and the magnetic circuit system is relatively large and thick. The woofer with this structure has a relatively large thickness, which cannot meet the increasingly thinner demands of current electronic products, and is not very practical. [0004] Moreover, in order to ensure its low-frequency sound effect, the woof...

AI Technical Summary

Problems solved by technology

If a flat diaphragm is used, combined with a voice coil structure (the voice coil needs to be located close to the edge), the large-area diaphragm requires a relatively large voice coil size, which is difficult to wind and easy to deform

In addition, the magnet size of the existing woofer is relatively large, and the thickness of the washer and the basin frame are small when the thinning is applied, the magnetic circuit system is easily saturated, the magnet performance is excessive, resulting in waste, and the cost is high

Images