Flow sensor with a protruding portion for height control and a cover for suppressing sinking of the cover during welding
US9778085B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2014 |
| Grant date | Oct 3, 2017 |
| Priority date | — |
| Expiry date | Nov 4, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/1815
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.