Ear-clip earphones

An ear-clip earphone, comprising:

• a sound-generating portion configured to be located in a concha cavity of a user and to contact an inner wall of the concha cavity, wherein the sound-generating portion includes:
• a housing, wherein an accommodating chamber is provided in the housing;
• a sound-generating assembly accommodated in the accommodating chamber and configured to convert an electrical signal into an audio signal;
• a sound outlet hole located on the housing and configured to guide out a sound generated by the sound-generating assembly;
• an abutment portion configured to abut against a back of an ear of the user, wherein a battery is disposed in the abutment portion;
• an ear hook configured to bypass an antihelix and a helix of the user and connect the sound-generating portion and the abutment portion, the ear hook having a first symmetry plane, wherein the housing forms a first projection on the first symmetry plane, the abutment portion forms a second projection on the first symmetry plane, the ear hook forms a third projection on the first symmetry plane, and the third projection includes an inner contour curve;
• wherein,
• the first projection and the second projection are in contact with each other, and the first projection and the second projection have a first common tangent between the first projection and the second projection, the first common tangent is tangent to the first projection and the second projection at a first tangent point, and the first tangent point serves as a first feature point;
• or,
• the first projection and the second projection have an overlapping region, an outer contour of the first projection and an outer contour of the second projection have two intersection points, and a midpoint of a connecting line between the two intersection points serves as the first feature point;
• a point on the inner contour curve farthest from the first feature point serves as a second feature point, and a distance between the first feature point and the second feature point ranges from 16.5 millimeters (mm) to 20.5 mm, or the distance between the first feature point and the second feature point is greater than or equal to 12 mm and less than 16.5 mm.