FLOW SENSOR AND METHOD FOR PRODUCING RESIN STRUCTURE

Title:

FLOW SENSOR AND METHOD FOR PRODUCING RESIN STRUCTURE

Document Type and Number:

WIPO Patent Application WO/2014/174872

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide a flow sensor that makes it possible to detect temperature abnormalities that the flow sensor has been exposed to and the time history of the flow sensor in a high-temperature environment from an externally visible cover material and that uses a cover material for which the laser welding quality can be guaranteed through visual inspection when the sensor is delivered as a product and even if the sensor is used in an abnormal state. A flow sensor provided with a housing, a cover, a circuit chamber that houses a wiring portion sealed between the housing and the cover, and an auxiliary passage through which the liquid to be sensed flows, wherein: a joint portion formed on the housing and a joint portion formed on the inner surface of the cover are joined together through the laser welding; the main material of the cover is a crystalline resin; the cover includes an amorphous alloy; and the cover is made to have a natural color.

Inventors:

ARAI SATOSHI (JP)
TSUNODA SHIGEHARU (JP)
TASHIRO SHINOBU (JP)
UENODAN AKIRA (JP)
IGARASHI SHINYA (JP)

Application Number:

PCT/JP2014/052833

Publication Date:

October 30, 2014

Filing Date:

February 07, 2014

Export Citation:

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Assignee:

HITACHI AUTOMOTIVE SYSTEMS LTD (JP)

International Classes:

G01F1/684; B29C65/16; B29C65/48; B29C65/82; G01F1/68

Domestic Patent References:

WO2003085046A1

2003-10-16

Foreign References:

JPH11258019A	1999-09-24
JP2003292752A	2003-10-15
JP2004358803A	2004-12-24
JP2008260161A	2008-10-30
JP2011252796A	2011-12-15
JP2007210165A	2007-08-23
JP2009056722A	2009-03-19
JP2010090234A	2010-04-22

Other References: