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US 2022/0088972 A1Published application
Tire and wear degree detection system
AssigneeSumitomo Rubber Industries, Ltd.
InventorsHiroto SETOKAWA, Kazuhisa FUSHIHARA, Mutsuki SUGIMOTO, Yukio NAKAO
Life of this patent
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Abstract
A tire can include a first magnetic body disposed at a predetermined position in a tread portion, a magnetic sensor disposed radially inward of the first magnetic body, and a second magnetic body disposed closer to the magnetic sensor than the first magnetic body is. At a position where the magnetic sensor is disposed, a direction of a magnetic force line emitted by the first magnetic body and a direction of a magnetic force line emitted by the second magnetic body can be different from each other.
Claims18
A tire comprising:
- a tread portion having a continuous ground-contact surface along an outer peripheral surface of the tire in a circumferential direction;
- a first magnetic body disposed at a predetermined position in the tread portion;
- a magnetic sensor disposed radially inward of the first magnetic body;
- and
- a second magnetic body disposed closer to the magnetic sensor than the first magnetic body is to the magnetic sensor, wherein
- at a position where the magnetic sensor is disposed, a first direction of a first magnetic force line emitted by the first magnetic body and a second direction of a second magnetic force line emitted by the second magnetic body are different from each other.
3 more elements
A wear degree detection system comprising:
- a tire including:
- a tread portion having a continuous ground-contact surface along an outer peripheral surface of the tire in a circumferential direction,
- a first magnetic body disposed at a predetermined position in the tread portion,
- a magnetic sensor disposed radially inward of the first magnetic body, and
- a second magnetic body disposed closer to the magnetic sensor than the first magnetic body is to the magnetic sensor, wherein
- at a position where the magnetic sensor is disposed, a first direction of a first magnetic force line emitted by the first magnetic body and a second direction of a second magnetic force line emitted by the second magnetic body are different from each other;
- and
- circuitry configured to
- to store therein a direction of an initial magnetic force line detected by the magnetic sensor, and
- acquire a degree of wear of the tread portion on the basis of the direction of the magnetic force line detected by the magnetic sensor and the direction of the initial magnetic force line.
7 more elements
Dependencies are inferred from the claim text.