Torque wrench

B - Operations – Transporting – 25 – B

Patent

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Details

B25B 21/00 (2006.01)

Patent

CA 2412817

A torque wrench for applying torque to a component (21) is described. The torque wrench has an engaging member (18) for engaging the component (21) to be rotated about an axis (22) and a ratchet member (25) connected to the engaging member (18). A drive lever (14) is connected to the engaging member (18) via the ratchet member (25) such that rotation of the drive lever (14) in one sense about axis (22) applies torque to the engaging member (18) and rotation of the drive lever (14) in the opposite sense applies torque below a predetermined value to the engaging member (18). A connecting member (12) is pivotably connected to the drive lever (14) remote from the engaging member (18) and is adapted to be engaged by a head (10) of a piston (6) having reciprocating linear movement to alternately rotate the drive lever (14) in opposite senses about axis (22). The connecting member (12) is slidable relative to the piston head (10) in a direction transverse to the direction of reciprocal linear movement.

L'invention concerne une clé dynamométrique destinée à appliquer un couple sur un composant (21). Cette clé dynamométrique comporte un élément d'engrenage (18) conçu pour s'engrener sur ledit composant (21) destiné à tourner autour d'un axe (22) et un élément d'encliquetage (25) relié à l'élément d'engrenage (18). Un collier d'entraînement (14) est relié à l'élément d'engrenage (18) via l'élément d'encliquetage (25) de sorte que la rotation du collier d'entraînement (14) dans un sens autour de l'axe (22) applique un couple sur l'élément d'engrenage (18) et que la rotation du collier d'entraînement (14) dans le sens opposé applique un couple inférieur à une valeur prédéterminée sur l'élément d'engrenage (18). Un élément de connexion (12), qui est relié pivotant au collier d'entraînement (14) distant de l'élément d'engrenage (18), est conçue pour recevoir une tête (10) de piston (6) à mouvement linéaire alternatif afin de faire tourner de façon alternée le collier d'entraînement (14) dans des sens opposés autour d'un axe (22). L'élément de connexion (12) peut coulisser par rapport à la tête (10) de piston dans une direction transversale à la direction du mouvement linéaire alternatif.

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