The waterproof scheme of early education machine can be waterproof by sealing the whole body, but because of sound transmission, there must be sound transmission holes (sound transmission holes of speakers and MIC microphones) on the shell to realize sound playback and collection. This sound-permeable hole generally adopts the waterproof sound-permeable membrane (or acoustic waterproof and breathable membrane) of the early education machine to achieve good sound-permeable and breathable effect. However, if the speaker and microphone are sealed on the shell by the waterproof sealing glue dispensing process, only the waterproof and sound-permeable parts of the speaker and microphone are realized, then it is necessary to set air holes on the shell to realize the pressure balance, waterproof, breathable and heat dissipation in the shell, that is to say, the ventilation scheme of the early education machine is also needed to realize the good usability of the early education machine without failure.

Pictures of waterproof and breathable membrane products of early education machine