Traction wire arrangement and adjustable support assembly...

A - Human Necessities – 47 – C

Patent

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Details

A47C 7/46 (2006.01) B60N 2/66 (2006.01)

Patent

CA 2612068

In order to symmetrically act on a support member (20) of a support assembly on both sides using a single Bowden cable (18), a traction cable arrangement is used with comprises the Bowden cable, a first traction wire (17), and a coupling device (16) for coupling the first traction wire (17) to the Bowden cable (18). The first traction wire (17) is fixedly attached to the coupling device (16) and extends therefrom in a first direction. The sheath of the Bowden cable (18) is fixedly attached to the coupling device (16), and the wire of the Bowden cable (18) extends from the coupling device (16) in a second direction substantially opposite to the first direction and forms a second traction wire (19). The first traction wire (17) and the second traction wire (19) are slidably held on the support member (20) and are connected to a seat frame (30) at their ends. When the wire of the Bowden cable (18) is retraced with respect to the sheath, the second traction wire (19) is shortened, the coupling device (16) is displaced in the extending direction of the second traction wire (19), whereby a tensile force is also generated in the first traction wire (17). Consequently, the first traction wire (17) and the second traction wire (19) symmetrically act on the support member (20) on both sides thereof.

Afin d'agir symétriquement sur les deux côtés d'un élément de support (20) d'un ensemble support à l'aide d'un seul câble d'acier de Bowden (18), on utilise un agencement de câble de traction comprenant le câble d'acier de Bowden, un premier fil d'acier de traction (17) et un dispositif de couplage (16) qui permet de coupler le premier fil d'acier de traction (17) au câble d'acier de Bowden (18). Le premier fil d'acier de traction (17) est fixé solidement au dispositif de couplage (16) et s'étend, à partir de celui-ci, dans une première direction. La gaine du câble d'acier de Bowden (18) est fixée solidement au dispositif de couplage (16), et le fil d'acier du câble de Bowden (18) s'étend depuis le dispositif de couplage (16) dans une seconde direction sensiblement opposée à la première et forme un second fil d'acier de traction (19). Le premier fil d'acier de traction (17) et le second fil d'acier de traction (19) sont maintenus coulissants sur l'élément de support (20) et sont raccordés à un cadre de siège (30) au niveau de leurs extrémités. Lorsque le fil d'acier du câble de Bowden (18) est retracé par rapport à la gaine, le second fil d'acier de traction (19) est raccourci, le dispositif de couplage (16) est déplacé dans la direction du second fil d'acier de traction (19), ce qui génère une force de traction dans le premier fil d'acier de traction (17). En conséquence, le premier fil d'acier de traction (17) et le second fil d'acier de traction (19) agissent symétriquement sur les deux côtés de l'élément de support (20).

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