Tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorsTakuma Yoshizumi, Naoya Sofue, Daichi Aoki
Life of this patent
Estimating the term…
Abstract
A pneumatic tire (1) includes: a tread portion (2) including a land portion (24) divided by a plurality of main grooves (22) formed on a tread surface (21); an inner liner (7) constituting a tire inner surface (7A) on an inner side of the tread portion (2); and a mount member (10) which is provided on the tire inner surface (7A), and to which electric equipment can be attached. In the pneumatic tire (1), acetone extraction amount (AE2) of a rubber composition constituting the inner liner (7) is larger than acetone extraction amount AE1 of a rubber composition constituting the mount member (10).
Claims13
A tire comprising:
- a tread portion constituting a tire surface;
- an inner liner constituting a tire inner surface;
- and a mount member which is provided on the tire inner surface, and to which an electronic device can be attached, wherein the mount member includes:
- a mounting seat portion fixed to the tire inner surface;
- and a main body portion to which the electronic device is attached in a detachable manner, each of a first rubber composition constituting the mounting seat portion of the mount member and a second rubber composition constituting the inner liner contains a plasticizer, an acetone extraction amount AE2 of the second rubber composition is larger than an acetone extraction amount AE1 of the first rubber composition, the acetone extraction amount AE2 of the second rubber composition is less than 12%, a difference ΔA (AE2−AE1) between the acetone extraction amount AE2 of the second rubber composition and the acetone extraction amount AE1 of the first rubber composition is 0.5% or more and 4.8% or less, a complex elastic modulus E*1 at 70° C. of the first rubber composition and a complex elastic modulus E*2 at 70° C. of the second rubber composition measured under measurement conditions of a measurement temperature of 70° C., an initial strain of 5%, a dynamic strain of ±1%, a frequency of 10 Hz, and a stretch deformation mode, satisfy the following relationships (I) and (II):
- E*2<E*1≤3.0·E*2 (I) 8.3≥E*1−E*2≥5.2 (II).
Dependencies are inferred from the claim text.