Patent ID: 8731230

Claim:
A loudspeaker structure with inner frame, comprising: an outer frame having an expanded front opening and a bottom; an annular magnet flexibly mounted to the outer frame and provided on a front end with a plurality of circumferentially spaced and axially extended slots; a voice coil located inside the annular magnet; a diaphragm having an outer edge fixed to a rim of the expanded front opening of the outer frame and an inner edge fixed to the voice coil; a flexible suspension ring having an outer edge fixed to an internal stepped section of the outer frame and a central opening edge clearance-fitted to a sidewall of the annular magnet so as to flexibly couple the annular magnet and the outer frame; and an inner frame having a front portion fixed to a sidewall of the voice coil, a rear portion fixed to the central opening edge of the flexible suspension ring, and a plurality of legs extending between the front and the rear portion of the inner frame and aligned with the slots formed on the front end of the annular magnet such that the legs of the inner frame can move in and out of the slots on the front end of the annular magnet without hindering the forward and backward vibration of the voice coil in the annular magnet, so that bass response is enhanced.