SENSOR-EQUIPPED WHEEL BEARING DEVICE - NTN TOYO BEARING CO LTD

Title:

SENSOR-EQUIPPED WHEEL BEARING DEVICE

Document Type and Number:

WIPO Patent Application WO/2014/097926

Kind Code:

A1

Abstract:

Provided is a sensor-equipped wheel bearing device capable of estimating a load with high accuracy even in a state where, for example, a ground contact load acting on a supported wheel is considerably lower than that on the other wheels, for example, when the wheel is being lifted off the road surface without separately adding a sensor. A sensor-equipped wheel bearing device is provided with: a plurality of sensor units (20) for detecting a load applied to a wheel bearing (100); a sensor signal calculation means (31) for processing sensor signals (S) of the sensor units; and a load calculation processing means (32) for calculating a load applied to a road surface contact point of a wheel from the processed information. The load calculation processing means (32) comprises a low-load state determination unit (32b) for determining whether or not an object wheel is in a predetermined low-load state using information relating to a detected load other than that of the object wheel, and a load estimation calculation unit (32a) for switching a load calculation processing method according to the result of the determination to calculate the load applied to the wheel.

Inventors:

HATAKEYAMA WATARU (JP)
TAKAHASHI TORU (JP)
NISHIKAWA KENTAROU (JP)

Application Number:

PCT/JP2013/083039

Publication Date:

June 26, 2014

Filing Date:

December 10, 2013

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)

International Classes:

G01L5/00; F16C41/00; G01L5/16; G01L5/20

Domestic Patent References:

WO2010110173A1

2010-09-30

Foreign References:

JP2007271005A	2007-10-18
JP2003530565A	2003-10-14
JP2009270711A	2009-11-19
JP2010043901A	2010-02-25
JP2010096565A	2010-04-30

Other References: