Novel miniature speaker

The utility model discloses a novel miniature speaker, its protecgulum and shell that contains mutual equipment, the protecgulum encloses the cavity that becomes to be used for to set up vibration system and magnetic circuit with the shell jointly, vibration system contains the vibrating diaphragm, the vibrating diaphragm contains the ball top and sets up the book ring in ball topside reason, roll over the ring by link together and protruding opposite direction's infolding ring sum is rolled over the ring outward and is constituted, the outer ring looks of rolling over the direction of protecgulum is protruding, the inboard of protecgulum corresponds outer position of rolling over the ring is equipped with the annular groove of dodging, the outside surface of protecgulum is planar structure, the ball top of vibrating diaphragm includes a plurality of mica flakes and fills in the substrate between each mica flake, the substrate is one kind in resin, paper pulp and the pitch, the ball top contains a plurality o