Mobile electronic device and method for waterproofing mobile electronic device

A method for waterproofing a mobile electronic device including

• a housing;
• an acoustic component disposed inside the housing;
• a cover attached to the acoustic component and disposed inside the housing;
• a sound hole formed in the housing, the sound hole being configured to allow communication between an inside and an outside of the housing;
• a non-breathable waterproof film disposed inside the housing, the non-breathable waterproof film being configured to cover the sound hole and being disposed between the sound hole and the cover;
• and
• a compressible member disposed within the housing, and disposed between the non-breathable waterproof film and the cover,
• wherein the compressible member is configured to be compressed by being pressed against the cover during assembly of the acoustic component to the housing,
• wherein the non-breathable waterproof film, the cover and the compressible member define an acoustic component chamber, the acoustic component chamber being configured to hermetically seal the acoustic component, and
• wherein the compressible member includes a communication groove at an end of the compressible member that is closest to the cover, communication groove being configured to allow communication between an inside of the acoustic component chamber and a space defined by the housing,
• the method comprising:
• during a first process of compressing the compressible member, compressing the compressible member while allowing air in the acoustic component chamber to escape through the communication groove to the space defined by the housing, and
• in a second process of compressing the compressible member after the first process, closing the
• communication groove while compressing the compressible member thereby creating an airtight seal,
• wherein air flow from the space within the mobile electronic device to the inside of the acoustic component chamber through the communication groove is blocked.