Electro-Acoustic Converters, Electronic Devices, Waterproof Covers, and Air Leakage Test Methods For Electro-Acoustic Converters

Abstract

It is an object to provide an electro-acoustic converter which can be subjected to air leakage test allowing a gas to pass through a waterproof film in such a condition that the waterproof film is attached to the electro-acoustic converter. An electro-acoustic converter is produced, which includes: a casing having a sound hole; and a diaphragm provided in the casing, wherein the sound hole is covered with the waterproof film to form a closed space, and the closed space is in communication with the outside of the casing through a vent for air leakage test.

1 . (canceled) 
     
     
         2 . An electro-acoustic converter comprising: a casing; a diaphragm provided in the casing; at least one sound hole and a vent for air leakage test, both of which are formed on the casing; and a waterproof film which covers the sound hole. 
     
     
         3 . The electro-acoustic converter according to  claim 1 , wherein the waterproof film is attached to a frame having a sound opening. 
     
     
         4 . The electro-acoustic converter according to  claim 3 , wherein the frame further has an opening for air ventilation, and the opening for air ventilation of the frame is in communication with the vent for air leakage test. 
     
     
         5 . The electro-acoustic converter according to  claim 4 , wherein the waterproof film has an opening for air ventilation, and the opening for air ventilation is in communication with the opening for air ventilation of the frame. 
     
     
         6 - 15 . (canceled) 
     
     
         16 . A waterproof cover comprising: a frame; and a waterproof film which covers a sound opening on the frame, wherein a vent for air leakage test is formed on the frame. 
     
     
         17 . (canceled) 
     
     
         18 . A process for producing an electronic device, comprising steps of: removing an electro-acoustic converter according to  claim 1  from a supplying sheet to which the electro-acoustic converter has been allowed to adhere; and then attaching the electro-acoustic converter to an outer casing.