Adhesive bolt and attachment method
AssigneeDr. Ing. h.c.F. Porsche Aktiengesellschaft
InventorsThiemo Erb, Markus Brunner, Jens-Ole Thoebel
Life of this patent
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Abstract
An adhesive bolt for forming a fastening point to a workpiece has a head and a shank connected to the head. The shank is set up to be introduced into a cutout on the workpiece. An adhesive is situated in the region of the shank and the workpiece. The shank is configured to enter into a non-positive preliminary connection with a bounding face of the cutout until the adhesive has hardened.
Claims13
An adhesive bolt for forming a fastening point to a workpiece, the adhesive bolt comprising:
- a head having a threaded body with a leading end and a flange projecting out from an end of the threaded body remote from the leading end, a surface of the flange facing away from the body being aligned perpendicular to an axis of the head and having a tool geometry disposed at plural spaced apart positions inward of an outer periphery of the flange and configured for roughening a surface of the workpiece;
- a shank connected to the head and extending from the surface of the flange facing away from the body, the shank being configured to be introduced into a cutout on the workpiece;
- and
- an adhesive situated in a region of the surface of the flange facing away from the body of the head and adjacent to the shank and the workpiece, wherein
- the shank is configured to enter into a non-positive preliminary connection with a bounding face of the cutout until the adhesive has hardened.
A method for attaching an adhesive bolt to a workpiece, comprising:
- providing a workpiece with a cutout;
- providing the adhesive bolt;
- applying an adhesive to the adhesive bolt and/or the workpiece (105) in the region of the cutout, and
- introducing the shank of the adhesive bolt into the cutout.
An adhesive bolt for forming a fastening point to a workpiece, the adhesive bolt comprising:
- a head having a threaded body with a leading end and a flange projecting out from an end of the threaded body remote from the leading end;
- a shank connected to the head and extending from the surface of the flange facing away from the threaded body, the shank defining a stepped shape with a small diameter portion remote from the flange and a large diameter portion between the small diameter portion and the flange, the large and small diameter portions being configured as drills so that the shank defines a stepped drill for forming a cutout in the workpiece;
- and
- an adhesive situated in a region of the surface of the flange facing away from the threaded body of the head and adjacent to the shank and the workpiece, wherein
- the shank being is configured to enter into a non-positive preliminary connection with a bounding face of the cutout formed by the drills until the adhesive has hardened.
Dependencies are inferred from the claim text.