Unfastening prevention device

F - Mech Eng,Light,Heat,Weapons – 16 – B

Patent

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Details

F16B 41/00 (2006.01) F16B 35/06 (2006.01) F16B 37/14 (2006.01)

Patent

CA 2511107

A tightened part disconnection preventing device having no externally projecting component parts and capable of preventing a disconnection on both the head part side and tip side of a bolt, wherein a cap (6, 16) is put on a tightened part by the bolt (2) and a nut (3), a groove (6a, 16a) is formed in the inner peripheral surface of the cap (6, 16), and the outer peripheral side portion of a spring ring (8) having the inner peripheral side portion thereof fitted to the outer peripheral side groove (7a) of a holder (7) is fitted to the groove (6a, 16a) to stop the movement of the cap in axial direction (2a), whereby the disconnection can be prevented since, even if a torque is applied to the cap (6, 16), the cap turns free and the tightened state is not varied.

L'invention concerne un dispositif anti-désaccouplement pour éléments couplés entre eux, lequel dispositif ne présente aucun élément constitutif saillant et peut permettre d'empêcher un désaccouplement de la partie tête et de la partie tige d'un boulon. Un capuchon (6, 16) est disposé par dessus un élément resserré par le boulon (2) et un écrou (3); une rainure (6a, 16a) est ménagée dans la surface périphérique interne du capuchon (6, 16); la portion latérale périphérique extérieure d'une bague élastique (8) dont la partie latérale périphérique intérieure est insérée dans la rainure (7a) latérale périphérique extérieure d'un support (7), laquelle est insérée dans la rainure (6a, 16a) afin d'arrêter le déplacement axial (2a) du capuchon. Ce mode de réalisation permet d'empêcher un désaccouplement, même si un couple est appliqué au capuchon (6, 16), ledit capuchon tourne librement et l'état resserré n'est pas modifié.

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