The utility model discloses a
hearing aid with a pre-tightening structure, which relates to the technical field of
medical instruments and comprises a
hearing aid body, the
hearing aid body comprises a hearing aid body, a sound transmission tube and an ear mold, the sound transmission tube is fixedly connected to the top of the hearing aid body, the ear mold is fixedly connected to one end of the sound transmission tube, and the other end of the sound transmission tube is fixedly connected with the hearing aid body. A storage cavity is formed in the surface of the hearing aid body; and the protection
assembly is arranged on the surface of the hearing aid body and comprises a pre-tightening piece, an adjusting piece and a binding
rope. The
ear protection device has the advantages that through the arrangement of the protection
assembly, the arc plate can be supported by the first spring to make contact with the
human body for preliminary pre-tightening and abutting, the binding
rope and the ring sleeve surround the ear of the
human body for secondary anti-falling protection, and meanwhile the supporting
stroke of the arc plate and the surrounding
stroke of the binding
rope can be flexibly adjusted through the adjusting piece; the overall wearing stability is guaranteed, a good positioning effect can be achieved for different ears of different
crowds, and the overall application range is wide.