Loudspeaker module

A loudspeaker module, comprising a module casing, the module casing comprises an upper casing and a lower casing which are engaged together, a loudspeaker unit body being accommodated within the space enclosed by the upper casing and the lower casing, the loudspeaker unit body comprising a unit body front cover and a unit body casing, which are engaged together, a vibration system and a magnetic circuit system being accommodated within a space enclosed by the unit body front cover and the unit body casing, wherein a plurality of positioning columns are arranged outside sidewalls of the unit body casing, each of the positioning columns protrudes out of a surface of the sidewall of the unit body casing, and extends from an upper end of the unit body casing to a lower end of the unit body casing along the sidewall of the unit body casing;

• positioning bosses are individually arranged at positions on an inside bottom of the lower casing corresponding to the positioning columns, the positioning bosses comprises an arch-shaped seat placed flat, openings are provided at the position of the seat corresponding to the connections of the positioning columns and the unit body casing, the openings vertically run through the seat, and positioning holes which are adapted for the positioning columns are individually vertically arranged on each seat.