Pneumatic tire
AssigneeThe Yokohama Rubber Co., Ltd.
InventorToshiyuki Sato
Life of this patent
Estimating the term…
Abstract
A pneumatic tire (1), wherein an inter-cord distance (Gcl) between a circumferential reinforcing layer (145) and an inner-side belt ply (142) at a tire equatorial plane (CL), an inter-cord distance (Gcu) between the circumferential reinforcing layer (145) and an outer-side belt ply (143) at the tire equatorial plane (CL), an inter-cord distance (Gsl) between the circumferential reinforcing layer (145) and the inner-side belt ply (142) at end regions of the circumferential reinforcing layer (145), an inter-cord distance (Gsu) between the circumferential reinforcing layer (145) and the outer-side belt ply (143) at the end regions of the circumferential reinforcing layer (145) have a relationship such that 1.20≤(Gcl+Gcu)/(Gsl+Gsu)≤9.20.
Claims13
A pneumatic tire comprising:
- a carcass layer;
- a belt layer disposed on an outer side in a tire radial direction of the carcass layer;
- and
- a tread rubber disposed on an outer side in the tire radial direction of the belt layer,
- the belt layer including a circumferential reinforcing layer having a belt angle within a range of ±5° with respect to a tire circumferential direction, and an inner-side belt ply and an outer-side belt ply having a belt angle, as an absolute value, of not less than 10° and not more than 70°, laminated adjacent to the circumferential reinforcing layer on an inner side in the tire radial direction and an outer side in the tire radial direction of the circumferential reinforcing layer respectively;
- an inter-cord distance Gcl between the circumferential reinforcing layer and the inner-side belt ply at a tire equatorial plane, an inter-cord distance Gcu between the circumferential reinforcing layer and the outer-side belt ply at the tire equatorial plane, an inter-cord distance Gsl between the circumferential reinforcing layer and the inner-side belt ply at end regions of the circumferential reinforcing layer, and an inter-cord distance Gsu between the circumferential reinforcing layer and the outer-side belt ply at the end regions of the circumferential reinforcing layer having a relationship such that 1.20≤(Gcl+Gcu)/(Gsl+Gsu)≤9.20;
- an end region of the circumferential reinforcing layer referring to a region from an end on an outer side in a tire width direction of the circumferential reinforcing layer to a position 20% of a width Ws of the circumferential reinforcing layer from the end;
- and
- the inter-cord distances Gcl, Gcu, Gsl, Gsu having a relationship such that Gsl<Gcl and Gsu<Gcu.
Dependencies are inferred from the claim text.