Abstract: A sound producing device comprising: a speaker unit and a housing, wherein the speaker unit comprises a vibration system which comprises a vibrating diaphragm and a voice coil; a front and rear acoustic cavities are formed between the vibrating diaphragm and the housing, respectively; the side surface of the housing is provided with a sound hole communicating with the front acoustic cavity; the vibrating diaphragm comprises a dome portion and a suspension ring portion; the side of the suspension ring portion connected to the dome portion is provided with a dome connecting portion, and the side of the suspension ring portion combined with the housing is provided with a housing bonding portion; and a height difference exists between the housing bonding portion and the dome connecting portion. The present invention increases the size of the sound hole and the speaker unit, thus improving the acoustic performance of a product.

Abstract: Disclosed is a speaker module, comprising an active sound source, a passive sound source and a protective frame; the active sound source comprises a vibration system and a magnetic circuit system; the side surface of the protective frame is provided with a sound hole for the active sound source; the passive sound source comprises two passive radiators, and the two passive radiators are arranged in parallel and enclose a cavity; a sound wave at one side of a vibrating diaphragm adjacent to the magnetic circuit system is divided into two parts respectively transmitted to one side of each of the two passive radiators away from the cavity; and a sound wave in the cavity is projected and emitted to the external environment via a sound hole for the passive sound source. The structure improves the bass effect of the speaker module, and improves the acoustic performance of the product.

Abstract: Disclosed is a loudspeaker module, which comprises a loudspeaker unit and a peripheral frame comprising an upper housing and a lower housing; a front acoustic cavity and a rear acoustic cavity are respectively defined as a space between the loudspeaker unit and the upper housing, and a space between the loudspeaker unit and the lower housing; a sound hole in communication with the front acoustic cavity is provided on peripheral frame, and an inverted tube is provided in peripheral frame. The loudspeaker module of the present invention is provided with inverted tube in communication with rear acoustic cavity, so that low-frequency acoustic effect of products can be enhanced, and heat dissipation of rear acoustic cavity and balance of atmospheric pressures can be achieved; inverted tube and loudspeaker unit share front acoustic cavity and sound hole, which is beneficial to increasing size of loudspeaker unit and improving acoustic performance of products.

Abstract: Disclosed is a miniature moving-coil speaker comprising a magnetic circuit system, a vibration system, and an auxiliary system for fixing the magnetic circuit system and the vibration system. The vibration system comprises a diaphragm and a voice coil integrated with the diaphragm. The auxiliary system comprises a plastic enclosure. The diaphragm is installed correspondingly at one end face of the enclosure, while the magnetic circuit system is installed at the other end face of the enclosure opposite the diaphragm; also: a flexible circuit board is arranged on the end face of the enclosure where the magnetic circuit system is installed, and the voice coil is electrically connected to the flexible circuit board. The design reduces product installation height, while at the same time facilitates wire-leading and wire-combing for the miniature moving-coil speaker, and simplifies product design.

Abstract: The present invention provides a speaker module comprising a peripheral frame and speaker units housed in the peripheral frame, and the peripheral frame is provided with sound holes in communication with the outside, a front acoustic cavity in communication with the sound holes is defined between one side of the speaker units and the peripheral frame, and a rear acoustic cavity is defined between the peripheral frame and another side of the speaker units away from the front acoustic cavity; in which the speaker units are provided in plurality, and the rear acoustic cavity is divided into the same number of rear sub-cavities as that of the speaker units, and each of the speaker units corresponds to one of the rear sub-cavities and is in communication with its corresponding rear sub-cavity. The above structure makes it easier to adjust the acoustic performance and improves the stereo effect of the product.

Abstract: The present invention provides a speaker module comprising a peripheral frame and speaker units housed in the peripheral frame, and the peripheral frame is provided with sound holes in communication with the outside, a front acoustic cavity in communication with the sound holes is defined between one side of the speaker units and the peripheral frame, and a rear acoustic cavity is defined between the peripheral frame and another side of the speaker units away from the front acoustic cavity; in which the speaker units are provided in plurality, and the rear acoustic cavity is divided into the same number of rear sub-cavities as that of the speaker units, and each of the speaker units corresponds to one of the rear sub-cavities and is in communication with its corresponding rear sub-cavity. The above structure makes it easier to adjust the acoustic performance and improves the stereo effect of the product.

Abstract: A sounder module, comprising a sounder unit and a casing housing the sounder unit; the sounder unit comprises a magnetic circuit system; the magnetic circuit system comprises a concentrating flux, plate, a magnet and a magnet yoke (33) sequentially assembled; moreover, the casing of the sounder module forms a frame for fixing the magnetic circuit system of the sounder; and the magnetic circuit system and the casing are injection molded to form an integrated structure Also provided is a method for assembling the casing and the magnetic circuit system: a) firstly, sequentially assembling the concentrating flux plate, the magnet and the magnet yoke (33); b) placing the assembled concentrating flux plate, the magnet and the magnet yoke in an injection molder forming the casing; and c) adding molding material, and integrating the magnetic circuit system with the casing.

Abstract: Disclosed is a miniature moving-coil speaker comprising a magnetic circuit system, a vibration system, and an auxiliary system for fixing the magnetic circuit system and the vibration system. The vibration system comprises a diaphragm and a voice coil integrated with the diaphragm. The auxiliary system comprises a plastic enclosure. The diaphragm is installed correspondingly at one end face of the enclosure, while the magnetic circuit system is installed at the other end face of the enclosure opposite the diaphragm; also: a flexible circuit board is arranged on the end face of the enclosure where the magnetic circuit system is installed, and the voice coil is electrically connected to the flexible circuit board. The design reduces product installation height, while at the same time facilitates wire-leading and wire-combing for the miniature moving-coil speaker, and simplifies product design.