Vibration box on negative pressure cup capable of strengthening airtightness for achieving waterproof, anti-collision and noise reduction functions

A vibration box on a negative pressure cup capable of strengthening airtightness for achieving waterproof, anti-collision and noise reduction functions, comprising a vibration box installed on a negative pressure cup, a vibration motor being disposed inside the vibration box, and a vibration box back cover being disposed on a back of the vibration box for sealing, characterized in that:

• a waterproof rubber element being disposed on the vibration box back cover and a contact surface of the vibration box, the vibration box back cover and the contact surface of the vibration box being reciprocally disposed with flanges and grooves, and a surface of the waterproof rubber element being disposed with recesses with a concave cross section, and each of the recesses being sleeved to one of the flanges and embedded in the groove to be sealed;
• a noise reduction cover being hooded outside the vibration motor and fixed on the vibration box to securely fix a position of the vibration motor;
• and
• a buffer cushion being disposed between the vibration motor and the noise reduction cover.