Insert for tire

An insert for a bicycle tubeless tire, the insert comprising:

• an upper surface, a lower surface, and two lateral surfaces extending from the upper surface to the lower surface and facing each other, wherein, when the insert is inserted into a tire with a rim associated therewith, the upper surface is configured to be directed toward a tread of the tire and form an upper space between the upper surface and an inner surface of the tire, and the lower surface is configured to be directed toward the rim and form a lower space between the lower surface and the rim, wherein each of the two lateral surfaces comprises an upper lateral surface extending upward from an imaginary horizontal plane between two hooks of the rim to the upper surface and a lower lateral surface extending downward from the imaginary horizontal plane to the lower surface, wherein the upper lateral surface is in contact with an inner surface of the tire, and the lower lateral surface is at least partially spaced apart from the inner surface of the tire;
• an inner hollow portion formed inside the insert to have an upper inner surface and two lateral inner surfaces extending from the upper inner surface to the lower surface of the insert and facing each other such that an inner hollow space defined by the upper inner surface and the two lateral inner surfaces has a shape substantially corresponding to an exterior of the insert, wherein the inner hollow portion includes an opening portion formed on the lower surface of the insert and extending along an inner circumference of the insert to enable the inner hollow space to be opened toward the rim;
• and
• a through flow path penetrating through the upper surface towards the inner hollow space of the inner hollow portion, wherein the through flow path is configured to flow a fluid from the lower space to the upper space via the inner hollow space when the fluid is injected through a fluid injection part formed in the rim,
• wherein the upper surface has a maximum width greater than that of the lower surface, and the maximum width of the lower surface exceeds a distance between two tire beads.