Connecting element, use and method
AssigneeArnold Umformtechnik GmbH & Co. KG
InventorsHeiko Miller, Dominik Fröhlich
Life of this patent
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Abstract
A connecting element, the use thereof and a method for connecting plate shaped workpieces are proposed. The connecting element comprises a multiplicity of closed encircling annular projections, which are arranged in such a way that the spacing between adjacent annular projections changes along a circumference or that adjacent annular projections are arranged parallel to one another or obliquely to the longitudinal axis. The connecting element is rotated and pressed into contact to produce a hole and, after the production of the hole, is subjected only to axial contact pressure and is then twisted to lock.
Claims17
A connecting element for connecting at least two workpieces to one another, having
- a shank,
- a connecting element head at one end of the shank, said head projecting radially beyond the outside of the shank,
- a rotary driving formation on the connecting element head, and
- a front shank end, wherein
- at least one pair of closed annular projections is arranged on the shank in a holding portion of the shank which starts from the underside of the connecting element head, wherein
- at least one annular projection is not arranged fully in a plane extending perpendicularly to the longitudinal axis of the shank, and
- the spacing between the two annular projections of the pair differs along the circumference,
- wherein the front end of the shank is of blunt design.
A connecting element for connecting at least two workpieces to one another, having
- a shank,
- a connecting element head at one end of the shank, said head projecting radially beyond the outside of the shank,
- a rotary driving formation on the connecting element head, and
- a front shank end, wherein
- at least one pair of closed annular projections is arranged on the shank in a holding portion of the shank which starts from the underside of the connecting element head, wherein
- at least one annular projection is not arranged fully in a plane extending perpendicularly to the longitundinal axis of the shank, and
- the spacing between the two annular projections of the pair differs along the circumference in which the front end of the shank is of tapering design and is designed as a ballistic, rounded, tip.
Dependencies are inferred from the claim text.