Device for protecting a tyre sidewall
A device for protecting the tire of a wheel, includes a shield having a polymer material; a crown for mounting the protection device on a rim of the wheel, the crown being secured to the shield and including: a connection portion for securely connecting the crown to the shield; a mounting portion, forming a single piece with the connection portion, provided with a plurality of orifices for mounting the crown on the rim, the mounting portion including a plurality of lug-shaped protuberances distributed along the circumference of the mounting portion while being angularly spaced from each other, each protuberance radially protruding towards the center of the crown and comprising an orifice.
1 . A protection device for protecting a tire of a wheel, including:
a shield having an annular shape and comprising a polymer material, the shield having an outer peripheral edge and an inner peripheral segment opposite to the outer peripheral edge; and
a crown for mounting the protection device on a rim of the wheel, the crown having a center and being secured to the shield and comprising:
a connection portion for securely connecting the crown to the shield, wherein the connection portion includes holding elements, wherein the protection device further includes textile yarns which cooperate with the holding elements while being embedded in the polymer material; and
a mounting portion, forming a single piece with the connection portion, provided with a plurality of mounting elements for mounting the crown on the rim, the mounting portion being radially located between the center and the connection portion and including a plurality of lug-shaped protuberances distributed along the circumference of the mounting portion while being angularly spaced from each other, each protuberance radially protruding towards the center of the crown and comprising at least one of the mounting elements.
2 . The protection device according to claim 1 , wherein the mounting elements comprise orifices to receive members for fixing the rim.
3 . The protection device according to claim 2 , wherein each protuberance includes one of the orifices.
4 . The protection device according to claim 1 , wherein the mounting portion radially extends towards the center of the crown out of the inner peripheral segment of the shield.
5 . The protection device according to claim 1 , wherein the connection portion is embedded in the inner peripheral segment of the shield.
6 . The protection device according to claim 1 , wherein the holding elements are holes which axially pass through the crown by being disposed along the circumference of the fixing portion, the textile yarns being engaged in the holes so as to extend on either side of the connection portion.
7 . The protection device according to claim 1 , wherein the polymer material is an elastomer.
8 . The protection device according to claim 7 , wherein the elastomer comprises styrene-butadiene.
9 . The protection device according to claim 1 , wherein the shield further includes at least one reinforcement.
10 . The protection device according to claim 9 , wherein the at least one reinforcement comprises a knitted fabric made from metal yarns.
11 . The protection device according to claim 1 , wherein the crown is metallic.
12 . A rolling assembly including:
a wheel comprising a rim provided with an internal flange and an external flange, the rim being composed of a first rim portion including the internal flange, and a second rim portion including the external flange, the first and second rim portions being fixed to each other by fixing members,
the wheel including a tire having at least one sidewall, and first and second beads mounted against the internal and external flanges of the rim; and
a tire-sidewall protection device including:
a shield having an annular shape and comprising a polymer material, the shield having an outer peripheral edge and an inner peripheral segment opposite to the outer peripheral edge;
a crown for mounting the tire-sidewall protection device on the rim of the wheel, the crown having a center and being secured to the shield and comprising:
a connection portion for securely connecting the crown to the shield, wherein the connection portion is embedded within the inner peripheral segment of the shield, such that the connection portion is sealed within the polymer material constituting the shield, and wherein the shield extends radially over at least half of a radial height of the sidewall;
a mounting portion, forming a single piece with the connection portion, provided with a plurality of mounting elements for mounting the crown on the rim, the mounting portion being radially located between the center and the connection portion and including a plurality of lug-shaped protuberances distributed along the circumference of the mounting portion while being angularly spaced from each other, each protuberance radially protruding towards the center of the crown and comprising at least one of the mounting elements,
the crown being fixed to the rim and the mounting elements of the crown being mounted on at least some of the fixing members.
13 . The rolling assembly according to claim 12 , wherein the outer peripheral edge of the shield contacts the sidewall of the tire by exerting a pressure against said sidewall.
14 . The rolling assembly according to claim 12 , wherein the number of mounting elements is strictly smaller than the number of fixing members.
15 . The rolling assembly according to claim 14 , wherein the number of mounting elements is less than or equal to half the number of fixing members.
16 . The rolling assembly according to claim 12 , wherein the crown is fixed via the mounting elements to one every two or every three fixing members.
17 . The rolling assembly according to claim 12 , wherein one of the fixing members is disposed between two adjacent protuberances.
18 . The rolling assembly according to claim 12 , wherein the fixing members comprise studs axially protruding from the second rim portion.
19 . The rolling assembly according to claim 12 , wherein the shield has a bent annular shape with a curved cross-section.
20 . The rolling assembly according to claim 19 , wherein the outer peripheral edge is configured to bear against the at least one sidewall of the tire.