Handlebar for cycles and motorcycles

摘要

The present invention concerns a handlebar ( 11;111;211 ) for cycles and motorcycles, in particular for cross-country use, which is light but at the same time resistant to high intensity shocks and stresses and having an optimised elasticity, said handlebar comprising a median section ( 13;113 ) which presents a central portion ( 23 ) having a diameter d₂₃ and a thickness s₂₃ for fixing the handlebar; two end sections ( 15,17 ), each of them presenting a central portion ( 27 ) having a diameter d₂₇ and a thickness s₂₇ for holding the handlebar; and two intermediate sections ( 19,21 ), each of them presenting a central portion ( 25 ) having a diameter d₂₅ and a thickness s₂₅ linking to said median section ( 13 ) in an inner bending zone ( 24 ) and to one corresponding of said end sections ( 15,17 ) in an external bending zone ( 26 ) having a thickness s 26 ; said handlebar presenting a variable diameter and a variable thickness, characterised in that said thickness and said diameter vary according to the law d₂₃>d₂₅>d₂₇ and the thickness of the handlebar varies according to the law s₂₆>s₂₃>s₂₅>s₂₇.