VEHICLE WEIGHT MEASUREMENT DEVICE

Title:

VEHICLE WEIGHT MEASUREMENT DEVICE

Document Type and Number:

WIPO Patent Application WO/2018/230015

Kind Code:

A1

Abstract:

This vehicle weight measurement device comprises a diaphragm (11) that covers an opening area (9d) of a groove (9c) in an attachment part (7) and, together with the groove, forms an oil chamber (9) consisting of a prescribed space and a pressure sensor (21) capable of detecting pressure variation in a measurement fluid (R) in the oil chamber. The vehicle weight measurement device also comprises a first piston (43) capable of pressing the diaphragm, a second piston (44) capable of pressing the first piston, and a relatively rotatable bearing unit (50) that is interposed between the second piston and a spring bush (47) for receiving one end of a spring of a suspension. The bearing unit is provided with a thrust needle bearing (60) for oscillatably supporting the length-direction load of the suspension and a sliding bush (75) for causing fixed oscillation attenuation and receiving the radial-direction load without receiving the length-direction load.

Inventors:

MORITA RYUHO (JP)
MATSUDA YASUYUKI (JP)
HIKIDA MASAFUMI (JP)
SUZUKI EISAKU (JP)
SUZUKI SHUNSUKE (JP)
MUKAI YOSHIYA (JP)

Application Number:

PCT/JP2017/045094

Publication Date:

December 20, 2018

Filing Date:

December 15, 2017

Export Citation:

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Assignee:

NSK LTD (JP)

International Classes:

G01G19/10; F16C33/78; F16F1/12; F16F9/32; G01L5/00

Domestic Patent References:

WO2017098814A1	2017-06-15
WO2016052106A1	2016-04-07

Foreign References:

JP2006170352A	2006-06-29
US5979218A	1999-11-09
JP2017015680A	2017-01-19
JPH04181132A	1992-06-29
JP2001330503A	2001-11-30
JP2016121056A	2016-07-07
JP2017118514A	2017-06-29

Other References: