Torque resistant fastening element
First Claim
Patent Images
1. A fastening element and panel assembly comprising:
- a panel;
a fastening element having a barrel portion being tubular with an open free end and defining an axis having a circumference thereabout;
a radial flange portion integral with said barrel portion opposite said free end and defining a circumferential surface;
a post portion integral with said radial flange portion extending rearwardly from said barrel portion generally along an axis of said barrel portion having a threaded surface; and
said open free end of said barrel portion being deformed outwardly and upwardly into a hook shape and said panel being received by said deformed barrel portion thereby securing said fastening element to said panel, said circumferential surface of said radial flange portion permanently including projections spaced apart and extending outwardly from said radial flange portion deforming said panel, wherein each of said projections include at least one planar side surface extending generally perpendicular to said circumference about said axis defined by said barrel portion thereby preventing said fastening element from rotating about said axis relative to said panel.
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Accused Products
Abstract
A fastening element capable of being attached to a panel by deforming the panel is disclosed. A barrel portion is tubular with an open free end and has an axis defining a circumference. A radial flange portion is integral with the tubular barrel portion opposite the free end and defines a circumferential surface. The radial flange portion includes a plurality of projections spaced apart and extending outwardly from the circumferential surface. Each of the projections defines at least one wall generally perpendicular to the circumference about the axis of the barrel portion.
134 Citations
32 Claims
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1. A fastening element and panel assembly comprising:
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a panel; a fastening element having a barrel portion being tubular with an open free end and defining an axis having a circumference thereabout; a radial flange portion integral with said barrel portion opposite said free end and defining a circumferential surface; a post portion integral with said radial flange portion extending rearwardly from said barrel portion generally along an axis of said barrel portion having a threaded surface; and said open free end of said barrel portion being deformed outwardly and upwardly into a hook shape and said panel being received by said deformed barrel portion thereby securing said fastening element to said panel, said circumferential surface of said radial flange portion permanently including projections spaced apart and extending outwardly from said radial flange portion deforming said panel, wherein each of said projections include at least one planar side surface extending generally perpendicular to said circumference about said axis defined by said barrel portion thereby preventing said fastening element from rotating about said axis relative to said panel. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of attaching a fastening element in a panel, said fastening element having a barrel portion being tubular with an open free end and defining an axis, and having a radial flange portion integral with said panel portion opposite said free end defining a circumferential surface with a plurality of projections extending radially outwardly, each projection having at least one planar surface extending radially outwardly from said axis, including the steps of:
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supporting at least one side of said panel; driving said open free end of said barrel portion of said fastening element through said panel; deforming a first portion of said panel circumscribing said barrel portion of said fastening element downwardly against said tubular barrel portion; deforming said open free end of said barrel portion outwardly and upwardly around said first portion of said panel circumscribing said barrel portion thereby forming a generally U-shaped end portion of said barrel portion around said first portion of said panel; deforming a second panel portion downwardly with said radial flange portion of said fastening element and into a space between each of said plurality of projections wherein said projections extend radially from said axis into said second panel portion permanently deforming said panel thereby preventing said fastening element from rotating about said axis relative to said panel portion. - View Dependent Claims (9, 10)
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11. A self-attaching fastener, comprising:
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a tubular barrel portion having a first end and a second open free end; a radial flange portion integral with said barrel portion adjacent said first end having an outer circumference including a plurality of circumferentially spaced radial projections and planar surfaces between said spaced radial projections; and each of said spaced radial projections including a planar, generally radial side face extending generally perpendicular to said outer circumference of said radial flange portion. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A self-attaching fastener, comprising:
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a tubular barrel portion having a first end and a second open free end; a radial flange portion integral with said barrel portion adjacent said first end having an outer circumference including a plurality of circumferentially spaced radial projections having a circumferential width less than a circumferential width of said radial flange portion between said radial projections; and each of said radial projections including planar side faces on opposed sides of said projections extending generally radially and generally perpendicular to said outer circumference of said radial flange portion and convex end faces. - View Dependent Claims (18, 19, 20, 21)
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22. A self-attaching fastener, comprising:
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a tubular barrel portion having a first end and a second open free end; a radial flange portion integral with said tubular barrel portion adjacent said first end having an outer circumference including a plurality of circumferentially spaced radial projections; and each of said circumferentially spaced radial projections including opposed planar generally radial side faces extending generally perpendicular to said circumference of said radial flange portion, said radial projections circumferentially spaced on said outer circumference of said radial flange portion a circumferential width greater than a circumferential width of said radial projections measured between said planar generally radial side faces and each of said radial projections having a cylindrical end face, wherein said cylindrical end faces are circumferentially aligned to define a discontinuous cylindrical outer surface of said radial flange portion. - View Dependent Claims (23)
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24. A method of attaching a fastening element in a panel, said fastening element including a tubular barrel portion having an open free end and a radial flange portion opposite said open free end of said tubular barrel portion having a plurality of circumferentially spaced radial projections, each radial projection having a planar generally radial side face and wherein said radial projections have a circumferential width less than a circumferential width of said radial flange portion between said circumferentially spaced radial projections forming outwardly opening radial recesses having a circumferential width greater than said circumferential width of said radial projections, said method comprising:
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supporting a panel on a panel support surface of a die member including an annular die cavity having a frustoconical outer surface and a central die post; aligning said tubular barrel portion with said central die post of said die member and driving said open free cad of said tubular barrel portion through an opening in said panel; deforming a first portion of said panel circumscribing said tubular barrel portion into said annular die cavity against said central die post; deforming said open free end of said tubular barrel portion in said annular die cavity around said first portion of said panel circumscribing said tubular barrel portion; and deforming a second panel portion adjacent said first panel portion incrementally radially inwardly against an outer surface of said radial projections and into said outwardly opening radial recesses of said radial flange portion thereby preventing said fastening element from rotating about a longitudinal axis relative to said panel. - View Dependent Claims (25, 26, 27)
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28. A self attaching fastener, comprising:
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a tubular barrel portion having a first end and a second open free end; a radial flange portion integral with said barrel portion adjacent said first end of said tubular barrel portion having an outer circumference including a plurality of circumferentially spaced radial projections; and each of said spaced radial projections including opposed planar generally radial side faces extending generally perpendicular to said outer circumference of said radial flange portion and convex end faces.
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29. A self-attaching male fastener, comprising:
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a tubular barrel portion having a first end and a second open free end a radial flange portion integral with said barrel portion adjacent said first end of said tubular barrel portion having an outer circumference including a plurality of circumferentially spaced radial projections, each of said radial projections including a planar, generally radial side face extending generally perpendicular to said outer circumference of said radial flange portion and a plurality of circumferentially spaced generally planar surfaces located between said radial projections; and a threaded shank portion integral with said first end of said tubular barrel portion coaxially aligned with said tubular barrel portion.
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30. A self-attaching fastener, comprising:
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a tubular barrel portion having a first end and a second open free end; and a radial flange portion integral with said barrel portion adjacent said first end of said radial flange portion having a discontinuous outer circumferential surface including a plurality of circumferentially spaced radial projections, each of said radial projections having a planar generally radial side face extending generally perpendicular to a circumference of said radial flange portion, and a plurality of planar surfaces between said radial projections, wherein said planar surfaces each have a circumferential width greater than a circumferential width of said radial projections. - View Dependent Claims (31, 32)
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Specification