Earpiece and electro-acoustic transducer with protrusions and/or grooved passages

摘要

An earpiece includes a fitting portion and an attachment portion. The fitting portion includes a first end, a second end, and an outer surface including a passage that connects the first end and the second end to each other. The attachment portion is disposed inside the fitting portion to be engaged to a sound guide tube of an electro-acoustic transducer.

主权项

1. An earpiece, comprising:
a fitting portion including
a first end,a second end, andan outer surface formed in a dome shape having an opening corresponding to a center of the dome shape, the opening being at the first end, and including a plurality of protrusions arranged axially and transversely on the outer surface forming a passage among the plurality of protrusions, the passage extending along the outer surface from the first end to the second end; and an attachment portion that is disposed inside the fitting portion to be engaged to a sound guide tube of an electro-acoustic transducer, wherein each protrusion of the plurality of protrusions affixes to the outer surface at a base of the protrusion and a height of the protrusion is less than a width of the base of the protrusion, and the height of the protrusion is a distance from the base of the protrusion to a top of the protrusion.