Speaker assembly with rotary fastening mechanism

A speaker fastening mechanism comprising:

• a first fastening component having a first hole and a first breach formed on a side of the first hole, the first fastening component being installed inside an audio device;
• a second fastening component having a second hole and a second breach formed on a side of the second hole, a direction of the first breach being substantially perpendicular to a direction of the second breach, and the second fastening component being installed inside the audio device and disposed on a side of the first fastening component;
• a speaker unit, whereon a first fixing part and a second fixing part are formed;
• a first elastic component wedged in the first fixing part and fastened inside the first hole of the first fastening component;
• and
• a second elastic component wedged in the second fixing part and fastened inside the second hole of the second fastening component in a rotating manner after the first elastic component is fastened inside the first fastening component, for biaxially constraining the speaker unit with the first elastic component.