tire
The tire design with specific groove arrangements addresses the challenge of achieving both snow performance and low rolling resistance by enhancing edge components and rigidity through Z-shaped and V-shaped grooves, optimizing snow traction and reducing rolling resistance.
JP7719373B2Active Publication Date: 2025-08-06THE YOKOHAMA RUBBER CO LTD
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Patent Information
- Application Number
- JP2022060265
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2022-03-31
- Publication Date
- 2025-08-06
- Estimated Expiration
- 2042-03-31
AI Technical Summary
Technical Problem
Recent heavy-duty tires face a challenge in achieving both good snow performance and low rolling resistance, as conventional designs with narrow grooves fail to optimize both characteristics simultaneously.
Method used
A tire design featuring a pair of shoulder main grooves, two or more center main grooves, and specific arrangements of middle and center land portions with narrow grooves, including Z-shaped and V-shaped configurations, enhances snow performance while reducing rolling resistance.
Benefits of technology
The tire achieves improved snow performance and skid resistance through increased edge components, while maintaining rigidity and reducing rolling resistance by employing non-penetrating narrow grooves in the land portions.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide a tire capable of having both tire snow performance and low rolling resistance performance.SOLUTION: In a tire 1, a middle land part 32 comprises: first middle thin grooves 321 having a linear shape or circular arc shape and penetrating the middle land part 32; and second middle thin grooves 322 having a Z-shape and penetrating the middle land part 32. A center land part 33 comprises: first center thin grooves 331 having one end on an edge of the center land part 33, connected to a center main groove 22, and having the other end in the center land part 33; and second center thin grooves 332 extending in a tire circumferential direction and having both ends in the center land part 33. The first center thin grooves 331 are inclined in one direction in the tire circumferential direction toward the other end from the one end. The first center thin grooves 331 and the second center thin grooves 332 are arrayed in a V-shape with an apex facing the one direction in the tire circumferential direction.SELECTED DRAWING: Figure 3
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