US 2016/0252379 A1 · Flow Rate Sensor

Abstract

A flow rate sensor includes: a housing made from a resin material and having a bottom base portion and a side wall, at least one surface side of the housing being open; a cover made from a resin material, covering the one surface side of the housing, welded to an upper surface of the side wall of the housing, and defining, with the bottom base portion and the side wall of the housing, an auxiliary passage within which a gas to be measured flows that is taken in from a main passage; and a flow rate detection unit disposed within the auxiliary passage. A protruding portion for height control is provided to one of the housing and the cover at least in a vicinity of the side wall around the flow rate detection unit so as to suppress sinking in of the cover during welding.

Claims20

Dependent claims

A flow rate sensor, comprising:

a housing made from a resin material and having a bottom base portion and a side wall, at least one surface side of the housing being open;
a cover made from a resin material, covering the one surface side of the housing, welded to an upper surface of the side wall of the housing, and defining, with the bottom base portion and the side wall of the housing, an auxiliary passage within which a gas to be measured flows that is taken in from a main passage;
and
a flow rate detection unit disposed within the auxiliary passage;
wherein:
a protruding portion for height control is provided to one of the housing and the cover at least in a vicinity of the side wall around the flow rate detection unit so as to suppress sinking in of the cover during welding.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/027,564Filed 4 Nov 2014

Priority

JP 2013-23586714 Nov 2013

Published

1 Sep 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification37 codes

G01F 1/6847
Structural arrangements; Mounting of elements, e.g. in relation to fluid flow: where sensing or heating elements are not disturbing the fluid…
B29C 65/1616
Infrared [IR] radiation, e.g. by infrared lasers: near infrared radiation [NIR], e.g. by YAG lasers
B29C 65/1635
Characterised by the way of heating the interface: at least passing through one of the parts to be joined, i.e. laser transmission welding
B29C 65/1661
Scanning at least one of the parts to be joined: scanning repeatedly, e.g. quasi-simultaneous laser welding

Flow Rate Sensor

Life of this patent

Flow Rate Sensor

Life of this patent

Abstract

Claims20