Patent ID: 11897291
Assignee: THE YOKOHAMA RUBBER CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. The pneumatic tire according to claim 1, wherein
the first sipes are provided to be inclined in the tire lateral direction from the two outer main grooves to the inner continuous land portion and to be closed in the regions of the two intermediate continuous land portions,
as seen from the tread surface, a surface contour shape of each of first sipes a of the first sipes, which extends from an outer main groove A being one of the two outer main grooves, comprises:
an extending portion extending constantly in an extension direction or with smooth change from the outer main groove A; and
a bent portion provided on a side of a closed end portion of each of the first sipes a, the bent portion bending each of the first sipes a from the extending portion and extending to a direction opposite a direction to which the extending portion extends in the tire circumferential direction,
in the bent portion, the sipe main body portion extends from the extending portion constantly in the extension direction or with smooth change without being bent and is closed, and the sipe chamfered portion forms a bent shape of the bent portion,
second sipes are provided in a region of an intermediate continuous land portion (3 of the two intermediate continuous land portions, which is sandwiched between an outer main groove of the two outer main grooves different from the outer main groove A and one of the two inner main grooves, the second sipes extending from one of the two inner main grooves and being closed without communicating with the outer main groove,
third sipes are provided in the region of the inner continuous land portion, the third sipes extending from an inner main groove of the two inner main grooves, which is in contact with the intermediate continuous land portion (3, to the other inner main groove and being closed without communicating with the other inner main groove, and
inclination directions of the second sipes and the third sipes with respect to the tire lateral direction and positions thereof in the tire circumference are set, and the second sipes are positioned on extension lines of the third sipes.