Title:
TIRE WEAR MEASUREMENT DEVICE, PNEUMATIC TIRE, AND TIRE WEAR MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2022/085583
Kind Code:
A1
Abstract:
A tire wear measurement device 10 according to the present invention is capable of accurately detecting wear of a tread part, provides high linearity between wear and magnetic flux density of a magnetic body, and comprises: a magnetic body 13 embedded in a tread part 23 and is worn following the wear of the tread part; and a magnetic sensor 12 disposed at a position facing the magnetic body 13 in a tire 20. In the tire wear measurement device 10 where the magnetic sensor 12 detects a change of the magnetic flux density of a magnetic field M formed by the magnetic body 13, the bottom surface 13B of the magnetic body 13 appears on an outer surface 22 which is a ground contact surface of the tread part 23, and the area of the bottom surface 13B becomes smaller as the tread part 23 is worn.
Inventors:
TAMURA MANABU (JP)
IMAI YUKI (JP)
NOGUCHI TAKAFUMI (JP)
KUROSAWA RIE (JP)
SETOKAWA HIROTO (JP)
SUGIMOTO MUTSUKI (JP)
IMAI YUKI (JP)
NOGUCHI TAKAFUMI (JP)
KUROSAWA RIE (JP)
SETOKAWA HIROTO (JP)
SUGIMOTO MUTSUKI (JP)
Application Number:
PCT/JP2021/038211
Publication Date:
April 28, 2022
Filing Date:
October 15, 2021
Export Citation:
Assignee:
ALPS ALPINE CO LTD (JP)
SUMITOMO RUBBER IND (JP)
SUMITOMO RUBBER IND (JP)
International Classes:
G01B7/00; B60C11/24; B60C19/00; G01B7/06; G01M17/02
Domestic Patent References:
| WO2020145012A1 | 2020-07-16 | |||
| WO2019107296A1 | 2019-06-06 |
Foreign References:
| JP2003214808A | 2003-07-30 | |||
| JP2019203831A | 2019-11-28 | |||
| JP2019064433A | 2019-04-25 | |||
| JP2019064432A | 2019-04-25 | |||
| JP2020059154A | 2020-04-16 | |||
| US20100276044A1 | 2010-11-04 | |||
| US20090078347A1 | 2009-03-26 | |||
| US20070035386A1 | 2007-02-15 | |||
| US20180170118A1 | 2018-06-21 | |||
| US5964265A | 1999-10-12 | |||
| US8240198B2 | 2012-08-14 |
Attorney, Agent or Firm:
OKUBO, Katsuyuki (JP)
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