Patent ID: 8515111

Claim:
An in-the-ear hearing aid forming an inner casing space with a shell and a face plate, wherein the face plate has an opening section and a protector adhering to the face plate opening section waterproofedly separates a battery housing space and an inner shell space which constitutes the inner casing space, wherein; the face plate forms an opening section for loading and unloading a battery and is integrally formed with battery contacting units by an insert molding method, the protector is provided to cover the battery and is formed as a container with an opening section, and the opening section of the face plate and the opening section of the protector are joined; and a first end of each of the battery contacting units protrudes into the battery housing space and a second end of each of the battery contacting units protrudes into the inner shell space wherein each of the battery contacting units steps over the protector without penetrating the protector thereby preventing moisture from being transmitted from the battery housing space to the inner shell space.