Patent ID: 7318696
Filing Date: 2008-01-15
Classification: B23P,F16B,Y10T

Abstract:
1. Functional element ( 10 ; 110 ) for attachment to a sheet metal part and having a body portion ( 12 ; 112 ) defining a ring flange ( 14 ; 114 ) and a cylindrical rivet section ( 20 ; 120 ), said ring flange having an annular support surface ( 34 ; 134 ) facing said rivet section, said annular support surface having an outer diameter and an inner diameter, there being a transition from said ring flange ( 14 ; 114 ) into said rivet section ( 20 ; 120 ), said transition starting from said inner diameter of said annular support surface and being formed by an at least substantially conical surface ( 16 ; 116 ), which forms a contact surface for a corresponding conical region ( 42 ; 142 ) of a sheet metal part ( 40 , 140 ) which, on attachment of the functional element ( 10 ; 110 ) to a sheet metal part, is trapped between said annular support surface ( 34 ; 134 ) facing said rivet section ( 20 ; 120 ) and a ring bead ( 50 ; 150 ) formed from the rivet section; and said conical surface ( 16 ; 116 ) extending directly from said annular support surface ( 34 ; 134 ) of said ring flange ( 14 ; 114 ) facing said rivet section up to one of said rivet section ( 20 ; 120 ) and a boundary ( 36 ) of a throat part ( 18 ) provided between said conical surface ( 16 ; 116 ) and said rivet section.