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AssigneeProfil Verbindungstechnik GmbH & Co. KG
InventorsJiri Babej, Richard Humpert, Michael Vieth
Estimating the term…
An element attachable to a sheet metal part by riveting, in particular an element in the form of a centering bolt, having a shaft part and a head part, wherein the head part has at its side confronting the sheet metal part an at least approximately ring-like ring recess which merges at the radially inner side into a cylinder section of the head part which in turn merges into the shaft part and into a tubular rivet section which surrounds the shaft part in the region of the head part, is disposed within a ring-like contact surface arranged radially outside of the ring recess and merges at the radially outer side via an at least approximately conical wall into the ring-like contact surface, is characterized in that at least one local recess and preferably a plurality of in particular uniformly distributed local recesses is or are provided in the conical wall of the ring recess and/or in an optionally present ring-like base surface of the ring recess. A component assembly comprising the element and a sheet metal part and also a method for the manufacture of such a component assembly are also described.
A centering element (12) for attachment to a sheet metal part (10) by a riveted connection, in particular an element in the form of a centering bolt, said element having a shaft part (14), a tubular rivet section (22) surrounding said shaft part and a head part (16), said head part having a cylinder section, a side (18) confronting said sheet metal part, an at least approximately ring-like ring recess (20) at said side and a ring-like sheet metal contact surface (24 or 24′ respectively) surrounding said ring-like recess, said ring-like recess merging at a radially inner side into said cylinder section (21) of said head part (16) and said cylinder section in turn merging into said shaft part (14) and into said tubular rivet section (22) which surrounds said shaft part (14) in the region of said head part (16) and being disposed within said ring-like contact surface (24 or 24′ respectively) and said ring-like recess merging at a radially outer side via an at least approximately conical wall (23) into said ring-like contact surface, there being at least one local recess (32) provided in at least one of said conical wall (23) of said ring-like recess and in a ring-like base surface (26) of the ring recess.
A component assembly comprising a sheet metal part (10) and a centering element (12) attached to it by a riveted connection, in particular an element in the form of a centering bolt, said element having a shaft part (14), a tubular rivet section (22) surrounding said shaft part and a head part (16), said head part having a cylinder section, a side (18) confronting said sheet metal part, an at least approximately ring-like ring recess (20) at said side and a ring-like sheet metal contact surface (24 or 24′ respectively) surrounding said ring-like recess, said ring-like recess merging at a radially inner side into said cylinder section (21) of said head part (16) and said cylinder section in turn merging into said shaft part (14) and into said tubular rivet section (22) which surrounds said shaft part (14) in the region of said head part (16) and being disposed within said ring-like contact surface (24 or 24′ respectively) and said ring-like recess merging at a radially outer side via an at least approximately conical wall (23) into said ring-like contact surface, there being at least one local recess (32) provided in at least one of said conical wall (23) of said ring-like recess and in a ring-like base surface (26) of the ring recess, said sheet metal part (10) having a ring-like raised formation (52) received in said ring-like recess (20);
A method for the attachment of a centering element to a sheet metal part (10) for the formation of a component assembly, said centering element (12) having a shaft part (14), a tubular rivet section (22) surrounding said shaft part and a head part (16), said head part having a cylinder section, a side (18) confronting said sheet metal part, an at least approximately ring-like ring recess (20) at said side and a ring-like sheet metal contact surface (24 or 24′ respectively) surrounding said ring-like recess, said ring-like recess merging at a radially inner side into said cylinder section (21) of said head part (16) and said cylinder section in turn merging into said shaft part (14) and into said tubular rivet section (22) which surrounds said shaft part (14) in the region of said head part (16) and being disposed within said ring-like contact surface (24 or 24′ respectively) and said ring-like recess merging at a radially outer side via an at least approximately conical wall (23) into said ring-like contact surface, there being at least one local recess (32) provided in at least one of said conical wall (23) of said ring-like recess and in a ring-like base surface (26) of the ring recess, the method comprising the steps of inserting said shaft part of said element into a pre-formed hole of said sheet metal part (10), forming material of said sheet metal part surrounding said tubular rivet section (22) by means of a die button having a central recess which receives said shaft part and a ring-like raised portion which surrounds said central recess into the or each local recess (32) and pressing said rivet section (22) into a ring recess (20) formed in the underside of the sheet metal part during formation of the rivet bead (42).
Dependencies are inferred from the claim text.