Joining method and joint structure of members
US11229942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2017 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Oct 21, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D39/203
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Disclosed is a joining method of members, which includes the steps of: preparing a first member in which a first hole portion having a polygonal cross-sectional shape is formed, and a second member having a hollow shape, wherein the second member has a cross-sectional shape corresponding to the polygonal cross-sectional shape of the first hole portion, the second member including a plurality of straight line portions extending linearly and corner portions positioned between the adjacent two straight line portions in the cross-sectional shape; inserting the second member into the first hole portion of the first member; and caulking and joining the second member to the first member by enlarging and deforming the corner portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.