Charging cases for earphones

A charging case for at least one earphone, each of the at least one earphone including a core module and a hook structure connected to the core module, the hook structure including a battery housing and an elastic part connecting the battery housing and the core module, and each elastic part having a curved shape, wherein:

• the charging case includes a lower housing assembly, the lower housing assembly is disposed with two profiling grooves, the at least one earphone includes two earphones corresponding to left and right ears of a user, respectively, the two profiling grooves accommodate the two earphones, respectively,
• each of the two profiling grooves includes a first profiling groove region corresponding to the core module and a second profiling groove region corresponding to the hook structure, second profiling groove regions of the two profiling grooves are disposed intersecting with each other, when the two profiling grooves accommodate the two earphones, respectively, elastic parts of the two earphones overlap with each other,
• when viewed directly above the charging case, the elastic parts of the two earphones at least partially overlap with each other to form two overlapping points, and
• a region of the two second profiling groove regions that is surrounded by the hook structures and located between the two overlapping points integrate with each other.