Cable lug comprising a nut or functional part, method for the production of such a cable lug, and nut

A captive clinch nut for rotatable attachment to an aperture workpiece, comprising:

• a nut body having an axial threaded bore which defines a centerline;
• a first bearing surface on a base of said nut body;
• a displacer unitary with said nut body located directly below said first bearing surface and adapted to receive a cold flow of metal of the workpiece, said displacer having an outer surface extending from said first bearing surface, the displacer inwardly tapered along at least a portion of its outside surface relative to said centerline at an angle of any one of 20 to 50 degrees and having an outside diameter less than an outside diameter of said first bearing surface;
• a rigid tubular shank being substantially non-deformable in its unattached free state, unitary with said nut body, and coaxially extending from said displacer, said shank being outwardly flared toward a distal end;
• and
• said displacer having a second surface proximate to said shank, said second surface extending between said shank and said outer surface, said second surface continuously encircles said body and is angled at a constant angle relative to the centerline of said body, and wherein said nut is rotatable relative to the workpiece while being secured against substantial axial displacement relative to the workpiece after said nut is inserted into the hole in the workpiece and receives the cold flow, and
• wherein the captive clinch nut is devoid of prongs.

An assembly of parts comprising:

• a captive clinch nut comprising a nut body having an axial threaded bore, a first bearing surface on a base of said nut body, a displacer unitary with said nut body located directly below said first bearing surface, the displacer inwardly tapered along at least a portion of its outside surface and having an outside diameter less than an outside diameter of said first bearing surface, a rigid tubular shank being substantially non-deformable in its unattached free state, unitary with said nut body, and coaxially extending from said displacer, said shank being outwardly flared toward a distal end, and said displacer having a second surface proximate to said shank,
• a workpiece having an aperture formed therein, the displacer and shank of said nut body being located within said workpiece and being coaxial with said aperture such that a ductile deformed portion of said workpiece lies proximate to said second surface;
• and a space between said shank and an inside wall of said workpiece aperture;
• said second surface adapted to receive a cold flow of metal of the workpiece and wherein said nut is freely rotatable relative to the workpiece while being secured against substantial axial displacement relative to the workpiece after said nut is inserted into the hole in the workpiece and receives the cold flow.

An assembly of parts comprising:

• a captive clinch nut comprising a nut body having an axial threaded bore, a first bearing surface on a base of said nut body, a displacer unitary with said nut body located directly below said first bearing surface, the displacer inwardly tapered along at least a portion of its outside surface and having an outside diameter less than an outside diameter of said first bearing surface, a rigid tubular shank being substantially non-deformable in its unattached free state, unitary with said nut body, and coaxially extending from said displacer, said shank being outwardly flared toward a distal end, and said displacer having a second surface proximate to said shank;
• a workpiece having an aperture formed therein, the displacer and shank of said nut body being located within said workpiece and being coaxial with said aperture such that a ductile deformed portion of said workpiece lies proximate to said second surface;
• and
• a space between outside surfaces of said shank and an inside wall of said workpiece aperture, wherein the combined lengths of said displacer and said shank are less than the thickness of said workpiece such that said shank does not extend beyond a back side surface of said workpiece;
• said second surface adapted to receive a cold flow of metal of the workpiece and wherein said nut is freely rotatable relative to the workpiece while being secured against substantial axial displacement relative to the workpiece after said nut is inserted into the hole in the workpiece and receives the cold flow.

A captive clinch nut for rotatable attachment to an aperture workpiece, comprising:

• a nut body having an axial threaded bore;
• a first bearing surface on a bottom side of side of said nut body;
• a displacer unitary with said nut body and located directly below said first bearing surface for receiving a cold flow of metal of the workpiece, the displacer having an outside diameter less than an outside diameter of said first bearing surface, said displacer including an outer surface which is angled relative to said centerline at an angle of any one of 20 to 50 degrees, said outer surface extending downwardly from said nut body, and a lower displacer surface on a bottom side thereof which is not parallel to said first bearing surface;
• a rigid tubular shank being substantially non-deformable in its unattached free state, unitary with said nut body, and coaxially extending from said displacer, said shank being outwardly flared toward a distal end;
• said lower displacer surface extending between said outer surface and said shank, said lower displacer surface continuously encircles said displacer and is angled at a constant angle relative to the centerline of said body;
• wherein a neck of said shank immediately adjacent said displacer has an outside diameter less than the outside diameter of said displacer and less than an outside diameter of said flared end;
• and
• wherein said nut is rotatable within the workpiece while being secured against substantial axial displacement relative to the workpiece after said nut is inserted into the hole in the workpiece and receives the cold flow, and
• wherein said captive clinch nut is devoid of prongs.

An assembly of parts comprising:

• a captive clinch nut comprising a nut body having an axial threaded bore, a first bearing surface on a bottom side of side of said nut body, a displacer unitary with said nut body and located directly below said first bearing surface, the displacer having an outside diameter less than an outside diameter of said first bearing surface, said displacer including a displacer surface on a bottom side thereof which is not parallel to said first bearing surface, a rigid tubular shank being substantially non-deformable in its unattached free state, unitary with said nut body, and coaxially extending from said displacer, said shank being outwardly flared toward a distal end, wherein a neck of said shank immediately adjacent said displacer has an outside diameter less than the outside diameter of said displacer and less than an outside diameter of said flared end, and an undercut between said neck and said displacer;
• a workpiece having the aperture an aperture formed therein, the displacer and shank of said nut body being located within said workpiece and being coaxial with said aperture such that a ductile deformed portion of said workpiece lies within the undercut;
• and
• a space between said shank and an inside wall of said workpiece aperture;
• said undercut receiving a cold flow of metal of the workpiece,
• wherein said nut is freely rotatable within the workpiece while being secured against substantial axial displacement relative to the workpiece after said nut is inserted into the hole in the workpiece and receives the cold flow.