TYRE BEAD REINFORCEMENT COMPRISING DISCONTINUOUS REINFORCING ELEMENTS

摘要

pneumatic tyre for vehicles carrying heavy loads, including in thea rim (1), an additional reinforcement of reinforcement (9)a plurality of reinforcements comprising discontinuous (920, 921, 922), backupbeing oriented substantially circumferentially discontinuous to forma plurality of circles c, c ', c' axis of rotation concentric with thethe tyre, mounted on its rim, each circle is defined by a radius(r, r1, r2) measured by the axis of rotation, the tyre ischaracterized in that:.bullet. each backup (920) discontinuous length lolocated on a circle of radius r is mechanically coupled (in the length ofcoupling the two reinforcements 11 and 12) are located on a (921)radius of circle circle c1, r1, immediately adjacent to the circle c, lengthcoupling of l11 ranging between 55 and 70% of the length of the couplingl12 is between 10 and 25% of.bullet. lo. each backup (920).the circle c batch is coupled mechanically with the radius rcoupling lengths: 22) and two support points (922)in a circle of radius r2, c2 immediately adjacent the circle c1, lengthlinkage: is between 15 to 35% of the length of the coupling and the22, is between 50 u00e470% 10.