US Patent 11032637 Loudspeaker, mobile device, and method for assembling loudspeaker

The invention provides a loudspeaker, including: a first cover plate; a second cover plate covering the first cover plate; a speaker unit assembled on the first cover plate; an assembly opening formed in the second cover plate; a packaging ring clamped and assembled in the assembly opening. The packaging ring surrounds the speaker unit. The loudspeaker further includes a a rear cavity, formed by the packaging ring, the first cover plate and the second cover plate, a sounding adsorbing material filled in the rear cavity, and a through hole formed in a periphery of the packaging ring for communicating the rear cavity with the speaker unit. The packaging ring includes a mesh plate disposed on the periphery of the packaging ring and covering the through hole.