Loudspeaker module and manufacturing method thereof

A loudspeaker module, comprising an outer casing, the outer casing comprising a first casing and a second casing which are engaged together, the outer casing accommodating a speaker unit, the speaker unit partitioning an inner cavity of the whole module into two cavities, namely, a front acoustic cavity and a rear acoustic cavity, the speaker unit, the first casing and the second casing jointly enclosing the rear acoustic cavity, the rear acoustic cavity being internally provided with a sound-absorbing material, wherein

• the rear acoustic cavity is further provided with an isolating structure used for isolating the sound-absorbing material from the speaker unit, the isolating structure is vertically disposed between the first casing and the second casing, the isolating structure is a net-shaped thin sheet structure, the isolating structure and the outer casing are engaged by injection molding or adhesion;
• the isolating structure partitions the entire rear acoustic cavity into a filling area and a non-filling area, the isolating structure is provided with pores allowing air stream to circulate between the filling area and non-filling area, an upper end of the filling area is provided with a groove extending above the filling area, and a lower end of the filling area is provided with a groove extending below the filling area, each of the grooves is a triangular groove with a large opening and a pointed bottom;
• and
• the sound-absorbing material is located in the filling area, the sound-absorbing material is a foaming material, the sound-absorbing material is formed by the foaming of the foaming material, and the sound-absorbing material has a structure identical with the structure of the filling area and fills the entire filling area.