Method for assembling gas sensor, and gas sensor assembly apparatus
US10190895B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2016 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Feb 18, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4078
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for assembling a gas sensor includes fitting through holes of annular mounting parts with an element dummy disposed vertically and whose cross-sectional shape perpendicular is similar to that of a sensor element. The annular mounting parts are a plurality of parts including a ceramic powder compact. A tubular body is fitted with outer peripheries of the annular mounting parts, and then, the element is abuttingly disposed on an upper end of the dummy. Subsequently, the dummy is moved vertically downward to fit the through holes of the annular mounting parts with the element, thereby obtaining a workpiece. The workpiece is vertically inverted, and with the element tip being in contact with a sealing assist jig that has a buffer performance, the upper end of the uppermost annular mounting part is pressed vertically downward to compress the powder compact, thereby sealing an inside of the tubular body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.