Abrégé

Provided is a binding apparatus capable of efficiently binding a conventional filing implement which has been bound by a manual operation. In a binding apparatus (1) for a filing implement, after a ring member (101) is temporarily assembled to sheets to be bound, a locking piece (103) is inserted into a locking hole (102) of the ring member (101) and the sheets are bound. A lower binding tooth (32) and an upper binding tooth (52) are provided avoiding an opening of the ring member (101). The lower binding tooth (32) has a support point which makes contact with a lower semi-circular arcuate portion (101a) of the ring member (101) to thereby support the ring member (101). This support point is provided biased at the locking hole (102) side with respect to the deepest part (P) of a curved surface (32a) of the lower binding tooth (32).

Classes IPC  ?

• B42B 5/10 - Fixation permanente de feuilles, mains de papier ou cahiers les uns aux autres autrement que par piqûre par des éléments en forme de languettes, griffes ou anneaux passant dans les feuilles, mains ou cahiers les éléments étant en forme de créneaux ou de peignes
• B42F 13/16 - Classeurs comportant des moyens coopérant avec des perforations ou des fentes avec des griffes ou des anneaux