English to French Tech/Engineering Mechanics / Mech Engineering agrafeuse/stapler

Bonjour,

j'ai des difficultés à traduire le terme clincher dans le domaine de l'agrafeuse. J'espère que vous pourrez m'aider... D'avance merci beaucoup,
Juliette

voici les phrases de contexte :
CLINCHER DEVICE FOR STAPLER
A clincher device has a thin plate-like piece provided between a guide surface, bending and guiding staple legs, of a clincher member and the rear surface of paper sheets to be bound. The staple legs having penetrated through the paper sheets are guided along the lower surface of the thin plate-like piece and bent. Further, the clincher device has operation pieces projected upward from the clincher device.