Magnetic biased driving element for a fastener driving tool

Details Magnetic biased driving element for a fastener driving tool Magnetic biased driving element for a fastener driving tool

B - Operations, Transporting

25

C

B25C 5/13 (2006.01) B25C 1/00 (2006.01) B25C 1/04 (2006.01) B25C 5/16 (2006.01)

Patent

CA 2200271

A fastener driving tool includes a portable housing defining a fastener drive track. A magazine assembly is carried by the housing for receiving a supply of fasteners and for feeding successive fasteners into the drive track. A ferrous fastener driving element is mounted within the drive track for movement through repetitive cycles, each of which includes a fastener drive stroke in one direction in which a fastener within the drive track is engaged and moved outwardly of the drive track into a work piece, and a return stroke. A drive piston is operatively connected with the fastener driving element for movement therewith. An actuating mechanism is carried by the housing and is constructed and arranged to initiate movement of the fastener driving element through a fastener drive stroke. A magnet is mounted adjacent the drive track and is operatively associated with the fastener driving element so as to continuously bias the fastener driving element away from a feeding direction of the successive fasteners such that during the drive stroke of the fastener driving element, the fastener driving element may engage a leading fastener of the successive fasteners without contacting an adjacent fastener of the supply.

Cette invention concerne un outil à clouer portatif qui comporte un boîtier dans lequel est ménagé une voie de clouage. Le boîtier reçoit un chargeur dans lequel est placé une réserve de fixations et qui sert à introduire successivement les fixations dans une voie de clouage. Un élément chasse-fixation en matériau ferreux disposé à l'intérieur de la voie de clouage s'y déplace selon des cycles répétitifs, chaque cycle comportant une course de clouage dans une direction donnée par laquelle une fixation est engagée dans la voie de clouage puis chassée de manière à s'enfoncer dans une pièce, ainsi qu'une course de retour. Un piston d'entraînement articulé à l'élément chasse-fixation se déplace avec celui-ci. Un mécanisme de commande disposé dans le boîtier est configuré et monté de manière à commander le mouvement de l'élément chasse-fixation pendant la course de clouage. Un aimant placé à côté de la voie de clouage agit sur l'élément chasse-fixation de manière à le maintenir en retrait de la voie d'amenée des fixations successives de sorte qu'à chaque course de clouage l'élément chasse-fixation n'entraîne que la première fixation à la sortie du chargeur, sans toucher à la fixation suivante.

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