Radiation Device And Dual Suspension Edge Loudspeaker, Loudspeaker Box, and Application Thereof

A radiation device for vibrating to produce sound, comprising:

• at least an annular outer supporting frame;
• at least a vibration element;
• at least an annular first suspension edge made of resilient material and extended between said vibration element and said outer supporting frame so as to connect said vibration element with said outer supporting frame;
• at least an inner frame, connected with said vibration element;
• and
• at least an annular second suspension edge made of resilient material and connected between said inner frame and said outer holding frame, wherein said first suspension edge and said second suspension edge are symmetrically arranged in a back to back manner that when said vibration element is vibrating reciprocatingly, said first and second suspension edges cushion and buffer any offset force of said vibration element during vibration to retain said vibration element moving back and forth along an axial direction thereof.

A dual suspension edge speaker, comprising at least an annular outer supporting frame;

• at least a vibration element;
• at least an annular first suspension edge made of resilient material and extended between said vibration element and said outer supporting frame so as to connect said vibration element with said outer supporting frame;
• at least an inner frame connected with said vibration element;
• at least an annular second suspension edge made of resilient material and connected between said inner frame and said outer holding frame, wherein said first suspension edge and said second suspension edge are symmetrically arranged in a back to back manner;
• a magnetic system;
• and
• a voice coil coaxially coupled with vibration element;
• and
• a magnetic system arranged to drive said voice coil to move reciprocatingly under an effect of an electromagnetic driving force of said magnetic system so as to drive said vibration element to vibrate reciprocatingly to produce sound, wherein said first and second suspension edges cushion and buffer any offset force of said vibration element during vibration to retain said vibration element moving back and forth along an axial direction thereof.

A loudspeaker, comprising:

• a mounting shell defining a vibration chamber therein;
• at least one main vibration speaker arranged on said mounting shell;
• and
• at least two passive radiation devices, wherein each of said at least two passive radiation devices comprises:
• at least an annular outer supporting frame;
• at least a vibration element;
• at least an annular first suspension edge made of resilient material and extended between said vibration element and said outer supporting frame so as to connect said vibration element with said outer supporting frame;
• at least an inner frame, connected with said vibration element;
• and
• at least an annular second suspension edge made of resilient material and connected between said inner frame and said outer holding frame, wherein said first suspension edge and said second suspension edge are symmetrically arranged in a back to back manner that when said vibration element is vibrating reciprocatingly, said first and second suspension edges cushion and buffer any offset force of said vibration element during vibration to retain said vibration element moving back and forth along an axial direction thereof;
• wherein said at least two passive radiation devices are symmetrically mounted on two opposing sides of said mounting shell in while sharing said vibration chamber with said at least one main vibration speaker, wherein said at least two passive radiation devices are arranged in back to back configuration for vibration in opposite directions respectively, such that said at least two passive radiation devices vibrate in response to a vibration of said at least one main vibration speaker to produce auxiliary sound to enhance a bass effect of said loudspeaker, wherein pulling forces of said vibrations of said at least two passive radiation devices in opposite directions are counter-balanced and cancelled out with each other to avoid shaking and shifting of said loudspeaker.