Earpiece for a wearable electronic device and method of manufacturing the same

A wearable electronic device, in particular an EEG logger or a hearing instrument, comprising:

• an electronic main unit to be worn at the body of a user;
• at least one earpiece to be worn in the ear of a user;
• and
• a connecting part being configured to transfer at least one electric signal between the at least one sensor or actor of the earpiece and the electronic main unit;
• wherein said at least one earpiece includes an earpiece body made of an elastic material and designed to be inserted into the ear thereby abutting against an inner surface of the ear;
• at least one electronic sensor or actor being fixed to the earpiece body;
• at least one isolated electric wire electrically connected, at one end thereof, to the at least one sensor or actor;
• wherein at least one lug is integrally formed to the earpiece body, said at least one lug having a through-hole through which the wire passes;
• and
• wherein, in a relaxed state thereof, said through-hole has a width being smaller than an outer width of the wire such that the wire expands the lug, when passing through the through-hole causing the lug to exert an elastic force to the wire.

A method of manufacturing an earpiece to be worn in the ear of a user, for a wearable electronic device, in particular an EEG logger or a hearing instrument, the earpiece including an earpiece body made of an elastic material and designed to be inserted into the ear thereby abutting against an inner surface of the ear;

• at least one electronic sensor or actor being fixed to the earpiece body;
• and at least one isolated electric wire electrically connected, at one end thereof, to the at least one sensor or actor, said method comprising:
• manufacturing a raw form of said earpiece body using a forming process, in particular resin injection molding, casting or diecasting, said raw form having at least one protrusion;
• making a through-hole into the at least one protrusion, using material-removing processing, in particular drilling, stamping or cutting to transform the at least one protrusion into at least one lug;
• pushing a guide tube through the through-hole thereby expanding the material of said at least one lug:
• inserting said at least one electrical wire in the guide tube such that the wire passes through the through-hole;
• and
• removing the guide tube from the through-hole causing the lug to exert an elastic force to the wire.