BRAKING BAND OF A DISC FOR DISC BRAKE OF VENTILATED TYPE

A braking band (1) of a disc brake disc of a ventilated type unusually capable of avoiding vibrations which induce annoying squeals during the braking action, said braking band (1) extending between an inner diameter (D1), near a rotation axis (X-X) of the braking band (1), and an outer diameter (D2), far from said rotation axis (X-X); said braking band (1) comprising two plates (3, 4) facing each other; said plates comprising inner surfaces (5, 6) directly or indirectly facing each other and delimiting a gap (7); said plates being joined to each other by heat dissipating and connecting elements (16, 17, 19), said connecting elements project from a plate reaching the opposite plate, thereby forming bridges which connect the plates to each other; wherein a first series of fins (18) of said connecting elements is each a fin (19) which is in a single piece and extends from near said inner diameter to near said outer diameter; and wherein each of said fins (19) of said first series of fins (18) comprises a fin outer end portion (20) located near said outer diameter; the fin outer end portion (20) of said fin (19) comprises a predetermined extension along the outer circumferential direction; said fin (19) comprises a fin inner end portion (21) located near said inner diameter; said fin inner end portion (21) of said fin (19) comprises a predetermined extension along the inner circumferential direction; wherein considering a section taken along a section plane comprising a radial (R-R) and circumferential (C-C) direction, section made by passing through a mean air flowpoint which runs through said gap, said outer circumferential width is greater than said inner circumferential width; and wherein said fin outer end portion (20) of said each fin (19) of said first series of fins (18) faces only an adjacent fin (19) of said first series of fins (18) on both sides in circumferential direction (C-C). L'invention concerne une bande de freinage (1) d'un disque de frein à disque de type ventilé pouvant être exceptionnellement apte à éviter des vibrations qui induisent des crissements gênants pendant l'action de freinage, ladite bande de freinage (1) s'étendant entre un diamètre interne (D1) à proximité d'un axe de rotation (X-X) de la bande de freinage (1) et un diamètre externe (D2) éloigné dudit axe de rotation (X-X); ladite bande de freinage (1) comprenant deux plaques (3, 4) se faisant face; lesdites plaques comprenant des surfaces internes (5, 6) directement ou ind