Patent attributes
In a clasp (1), a male member (2) has a columnar insertion portion (23) and a female member (4) has a cylindrical housing portion (43). The clasp (1) has magnets which attract the insertion portion (23) into the housing portion (43). A male engagement body (3) is provided on an outer peripheral surface (23a) of the insertion portion (23) of the male member (2) while a female engagement body (5) is provided on an inner peripheral surface (43a) of the housing portion (43) of the female member (4). The male engagement body (3) and/or the female engagement body (5) is provided as a long protruding edge structure or a long recessed notch structure along the axis of the clasp (1), has a guiding portion (53), and also has a retaining portion (52) which prevents the insertion portion (23) from getting out of the housing portion (43).