Flexible shunt for electric power switch

Details Flexible shunt for electric power switch Flexible shunt for electric power switch

H - Electricity

01

H

H01H 1/58 (2006.01) H01H 33/66 (2006.01)

Patent

CA 2408499

A flexible shunt (23) in the form of a flexible member (25) made up of a stack of electrically conductive laminations (27) each of a thickness of no more than about 0.002 inch (0.051 mm) has a moveable end (25m) secured by a moveable mount (29) to a moveable contact support of an electric power switch for movement along a linear path (17). A fixed mount (37) secures the fixed end (25f) of the flexible member (25) to a fixed conductor termination (21) spaced laterally from the moveable end (25m) along a neutral axis perpendicular to the linear path (17) of the moveable end (25m) by an offset distance (j) such that the installed length (f) of the intermediate section (25i) between the fixed and moveable ends is less than the free length (f) of the intermediate section (25i). With this arrangement the stroke (55) of the moveable end along the linear path (17) can be up to at least 1/3 and even 1/2 of the free length (f) of the intermediate section (25i) of the flexible member (25) and with very low operating forces.

L'invention concerne un shunt flexible (23) sous la forme d'un élément souple (25) fabriqué à partir d'un empilage de lamelles conductrices (27) qui présentent, chacune, une épaisseur égale ou inférieure à environ 0,002 pouces (0,051 mm), comprenant une extrémité amovible (25m) fixée par un montage amovible (29) à un support de contact amovible d'un commutateur électrique de manière à se déplacer le long d'un trajet linéaire (17). Un montage fixe (37) relie l'extrémité fixe (25f) de l'élément souple (25) à une borne conductrice (21) fixe espacée latéralement de l'extrémité amovible (25m) le long d'un axe neutre perpendiculaire au trajet linéaire (17) de l'extrémité amovible (25m) par un décalage (j), de telle sorte que la longueur installée (f) de la section intermédiaire (25i) entre les extrémités fixe et amovible soit inférieur à la longueur libre (f) de la section intermédiaire (25i). Une telle configuration permet d'obtenir une course (55) de l'extrémité amovible le long du trajet linéaire (17) au moins supérieure à 1/3 et même à ? de la longueur libre (f) de la section intermédiaire (25i) de l'élément souple (25), ceci au moyen de forces de commande peu élevées.

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