Mini loudspeaker

Abstract

The invention discloses a micro-speaker, which relates to the technical field of electroacoustic products, and comprises a combined front cover and a casing, and a vibration system and a magnetic circuit system are accommodated in a space enclosed by the front cover and the casing. The vibration system includes a vibrating membrane, and the surrounding ring part of the vibrating membrane is composed of an inner surrounding ring and an outer surrounding ring connected together and protruding in opposite directions, the outer surrounding ring protrudes toward the direction of the front cover, the An annular avoidance groove is provided on the inner side of the front cover corresponding to the position of the outer ring, and the outer surface of the front cover is a planar structure. The micro-speaker of the present invention solves technical problems such as poor strength and easy deformation of the front cover of the micro-speaker in the prior art.

Description

technical field [0001] The invention relates to the technical field of electroacoustic products, in particular to a micro speaker. Background technique [0002] Microspeaker is an important acoustic component of portable electronic equipment, which is used to complete the conversion between electrical signals and sound signals, and is an energy conversion device. Existing miniature loudspeaker usually comprises shell and front cover that are combined together, and the space enclosed by shell and front cover accommodates vibrating system and magnetic circuit system, and vibrating system includes the vibrating membrane that combines together, voice coil, magnetic circuit system Includes magnetically conductive parts and magnets. A common diaphragm structure includes a central part, a ring part and an edge part that are sequentially combined from the inside to the outside. [0003] At present, in the design process, some micro-speakers will use the method of adding a reflex r...

AI Technical Summary

Problems solved by technology

However, due to the relatively large reflex ring, the front cover needs to provide an avoidance space for the diaphragm. On the premise of not increasing the overall thickness of the micro speaker, the thickness of the front cover can only be reduced, resulting in a thinner overall thickness of the front cover. The strength is not enough and it is easy to deform, especially the side thickness at the position where the four corners of the front cover are combined with the hot-melt columns on the shell is small, resulting in insufficient strength of the four corners of the front cover, which is easily deformed and collapsed under pressure, and cannot function The protective effect on the diaphragm surround seriously affects the reliability and service life of the micro-speaker

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