Pneumatic tire
AssigneeThe Yokohama Rubber Co., Ltd.
InventorHironori Wada
Life of this patent
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Abstract
Provided is a pneumatic tire including a plurality of main grooves extending in a tire circumferential direction and land portions defined by the main grooves adjacent to each other, respectively. The land portions are ribs that are continuous in the tire circumferential direction, and include lug grooves having a semi-closed structure, respectively. Of the main grooves defining the land portions, at least one of the main grooves has a zigzag shape formed by alternately connecting long portions and short portions. Further, a circumferential length Lg2 of the long portion has a relationship 0.70≤Lg2/λ2≤0.90 with respect to a wavelength λ2 of the zigzag shape.
Claims13
A pneumatic tire comprising:
- a plurality of main grooves extending in a tire circumferential direction;
- and
- land portions defined by the main grooves adjacent to each other;
- the land portions including a rib continuous in the tire circumferential direction and comprising lug grooves having a semi-closed structure,
- of the main grooves defining the land portions, at least one main groove having a zigzag shape formed by alternately connecting long portions and short portions, and
- a circumferential length Lg2 of the long portion having a relationship 0.70≤Lg2/λ2≤0.90 with respect to a wavelength λ2 of the zigzag shape, wherein
- the main groove having the zigzag shape has a see-through-less structure when viewed in the tire circumferential direction,
- of the main grooves defining the land portions, a main groove on a tire equatorial plane side has the zigzag shape formed by alternately connecting the long portions and the short portions,
- a main groove on a tire ground contact edge side has a zigzag shape formed by connecting linear portions having an approximately identical length,
- the linear portion of the main groove on the tire ground contact edge side has a circumferential length Lg1 that has a relationship 0.30≤Lg1/λ1≤0.70 with respect to a wavelength λ1 of the zigzag shape, and
- the wavelength λ1 of the main groove on the tire ground contact edge side and the wavelength λ2 of the main groove on the tire equatorial plane side have a relationship 1.50≤λ2/λ1≤2.00.
Dependencies are inferred from the claim text.