阅读说明：本技术 充气轮胎 (Pneumatic tire ) 是由 安藤宽太 于 2020-09-15 设计创作，主要内容包括：本发明是实现兼顾操纵稳定性和乘坐舒适性性能这两者的同时、可以充分地提高材料可回收性的充气轮胎。该充气轮胎包含含有胎圈部(5)、胎侧部(6)和胎面底层(7)的轮胎骨架部件(2)和配置在胎面底层(7)的外侧的胎面接地构件(3),胎面接地构件(3)由第1树脂材料(M1)构成。胎侧部(6)和胎面底层(7)由第2树脂材料(M2)构成。胎圈部由第3树脂材料(M3)构成。第1～第3树脂材料(M3)各自的拉伸弹性模量E1～E3满足E1＜E2＜E3。(The present invention provides a pneumatic tire which can sufficiently improve material recyclability while achieving both of steering stability and riding comfort performance. The pneumatic tire comprises a tire frame member (2) including a bead portion (5), a sidewall portion (6) and a tread bottom layer (7), and a tread ground contact member (3) disposed on the outer side of the tread bottom layer (7), wherein the tread ground contact member (3) is made of a 1 st resin material (M1). The sidewall portion (6) and the under tread layer (7) are composed of a2 nd resin material (M2). The bead portion is made of the 3 rd resin material (M3). The 1 st to 3 rd resin materials (M3) have tensile elastic moduli E1 to E3 satisfying E1 < E2 < E3, respectively.)

1. A pneumatic tire, comprising:

a ring-shaped tire frame member including a pair of bead portions, a pair of side portions, and a tread base layer connecting the pair of side portions;

a tread ground contact member disposed on the outer side of the tread base layer in the tire radial direction,

the tread ground engaging member is composed of a 1 st resin material,

the pair of sidewall portions and the under tread layer are composed of a2 nd resin material,

the pair of bead portions are made of a 3 rd resin material,

the respective tensile elastic moduli E1 to E3 of the 1 st to 3 rd resin materials satisfy the following formula (1)

E1＜E2＜E3…(1)。

2. The pneumatic tire according to claim 1, wherein a tread reinforcing member is disposed between the tread ground-contacting member and the under tread.

3. The pneumatic tire according to claim 2, wherein the tread reinforcing member comprises a cord reinforcing layer in which reinforcing cords are arranged.

4. The pneumatic tire according to claim 2 or 3, wherein the tread reinforcing member includes a resin reinforcing layer composed of a 4 th resin material different from the 1 st to 3 rd resin materials.

5. The pneumatic tire according to any one of claims 1 to 4, further satisfying the following formulas (2) and (3),

10×E1＞E2…(2)

10×E2＞E3…(3)。

6. the pneumatic tire as claimed in any one of claims 1 to 5, wherein the tensile modulus of elasticity E1 is in the range of 5 to 20 MPa.

7. The pneumatic tire according to any one of claims 1 to 6, wherein the tensile modulus of elasticity E2 is in the range of 10 to 100 MPa.

8. The pneumatic tire as claimed in any one of claims 1 to 7, wherein the tensile modulus of elasticity E3 is in the range of 50 to 500 MPa.