Twist beam with interlock

Details Twist beam with interlock Twist beam with interlock

B - Operations, Transporting

60

G

B60G 21/055 (2006.01)

Patent

CA 2698249

In a front wheel drive vehicle a traditional twist beam axle suffers from a short service life due to premature failures in intermediate areas between the end sections and the transitional section. A twist beam suspension is provided comprising a transverse strut (16) interconnecting longitudinal control arms (12). The transverse strut (16) may be formed from a tubular pipe. The tubular member may define a pair of tubular end sections (18), a deformed, U-shaped transitional section (20), and a pair of intermediate sections (22) between the end sections (18) and the transitional section (20). The intermediate section (22) may define a contour (28), known as a tongue. The tongue (28) enhances the flexibility in torsion and improves the stiffness in bending of the transverse strut (16). The tongue (28) may also include a concavity, to further aid in improving stiffness.

Selon l'invention, dans un véhicule à traction avant, un essieu rigide torsadé classique est condamné à une durée de vie courte du fait des défaillances prématurées qui surviennent dans les zones intermédiaires entre les sections d'extrémité et la section de transition. Une suspension de l'essieu rigide torsadé est décrite, qui comprend une plaquette transversale (16) reliant des bras de commande longitudinaux (12). La plaquette transversale (16) peut être formée d'un tuyau tubulaire. L'élément tubulaire peut délimiter une paire de sections d'extrémité tubulaires (18), une section de transition en U (20), et une paire de sections intermédiaires (22) situées entre les sections d'extrémité (18) et la section de transition (20). La section intermédiaire (22) peut délimiter un contour (28) appelé languette, qui augmente la souplesse en torsion et améliore la rigidité au pliage de la plaquette transversale (16). La languette (28) peut également présente un aspect concave qui améliore davantage la rigidité.

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