Friction damper

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

Patent

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Details

F16F 7/08 (2006.01) F16F 1/32 (2006.01)

Patent

CA 2564487

The invention relates to a friction damper comprising at least two guided relatively displaceable assemblies (100, 200), one of which is connected to a fixed reference and the other is movable, an intermediate member (300) which rests on the first assembly (100) and is relatively frictionally movable with respect thereto by an applied force and elastic means (400) acting upon said intermediate member. Said invention is characterised in that said elastic means (400) at standstill loads said intermediate member (300) resting on the first assembly (100) and the device also comprises control means (500) disposed between the intermediate member (300) and the second assembly (200) in such a way that the relative displacement between the two assemblies (100, 200) in a first relative displacement direction therebetween is braked by a friction force defined by the elastic means (400), while in the second relative displacement direction between the two assemblies (100, 200), while the control means (500) acts on the elastic means (400) in order to modify the force applied on the intermediate member (300), in the second relative displacement direction between the two assemblies (100, 200).

La présente invention concerne un dispositif amortisseur à friction comprenant au moins deux ensembles (100, 200) susceptibles de déplacement relatif guidés, l'un lié à une référence fixe, l'autre mobile, un organe intermédiaire (300) en appui contre l'un premier (100) des ensembles et susceptible de déplacement relatif par rapport à ce premier ensemble avec friction sous l'effet d'un effort appliqué, des moyens élastiques (400) qui agissent sur l'organe intermédiaire, caractérisé par le fait que les moyens élastiques (400) sollicitent au repos ledit organe intermédiaire (300) en appui sur le premier ensemble (100) et que le dispositif comprend en outre des moyens de commande (500) disposés entre l'organe intermédiaire (300) et le deuxième ensemble (200),tel que dans un premier sens de déplacement relatif entre les deux ensembles (100, 200) le déplacement relatif entre ceux-ci soit freiné par un effort de friction défini par les moyens élastiques (400), tandis que dans le deuxième sens de déplacement relatif entre les deux ensembles (100, 200), les moyens de commande (500) agissent sur les moyens élastiques (400) pour modifier l'effort exercé sur l'organe intermédiaire (300).

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