Title:
DEVICE FOR MEASURING TIRE WEAR
Document Type and Number:
WIPO Patent Application WO/2020/145012
Kind Code:
A1
Abstract:
This device 10 for measuring tire wear is provided with a magnetic body 11 embedded in a tread part 51, bias magnets 12 for magnetizing a steel wire 52, and a magnetic sensor 13 for detecting magnetic force of the magnetic body 11. Since the steel wire 52 is magnetized in advance by the bias magnets 12 in order to minimize change in the magnetization state of the steel wire 52 due to external magnetic fields, it is possible for the magnetic sensor 13 to make an accurate measurement of the magnetic force of the magnetic body 11 embedded in the tread part 51. Thus, it becomes possible to measure, with high accuracy, wear of the tread part 51 of a tire 50 that is equipped with the steel wire 52 while diminishing the effect of external magnetic fields.
Inventors:
YAMAMOTO AKIHITO (JP)
SEJIMO KAZUSHIGE (JP)
NAKAMURA TOKUO (JP)
SEJIMO KAZUSHIGE (JP)
NAKAMURA TOKUO (JP)
Application Number:
PCT/JP2019/048559
Publication Date:
July 16, 2020
Filing Date:
December 11, 2019
Export Citation:
Assignee:
ALPS ALPINE CO LTD (JP)
International Classes:
G01B7/06; G01M17/02
Foreign References:
| US20090078347A1 | 2009-03-26 | |||
| US20180170118A1 | 2018-06-21 | |||
| US20070035386A1 | 2007-02-15 | |||
| JP2019064433A | 2019-04-25 | |||
| JP2019203831A | 2019-11-28 | |||
| US20100276044A1 | 2010-11-04 |
Other References:
See also references of EP 3910281A4
Attorney, Agent or Firm:
OKUBO, Katsuyuki (JP)
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