A self-piercing rivet (SPR) joint includes a top layer including at least one steel material or at least one aluminum material, a middle layer including at least one magnesium material, and a bottom artificial aluminum layer including at least one aluminum material.

An assembly plug for closing openings, in particular openings in vehicle bodies and the like, wherein the assembly plug has a first device, which has structure for engaging in a latching manner behind an edge of an opening and there is also a second device, with which the structure for engaging in a latching manner behind an edge of a hole can be actuated radially outward into a latching position, wherein the second device is axially displaceable in the first device and the actuation can be carried out by the axial displacement.

A fastener structure includes a body portion, a control portion and a fastening portion. The control portion is movably fitted to the body portion. The control portion has a head portion and a limiting portion. The fastening portion is movably disposed at the body portion. The limiting portion is adapted to limit the fastening portion. Therefore, the body portion is disposed at the second object, and the control portion causes the fastening portion to be coupled to or separated from the first object, so as to couple together and separate at least two objects repeatedly and rapidly.

The present rivet invention has a main body comprising a first end and a second end opposite to the first end, wherein the main body further comprises a lateral wall disposed at the second end and circumferentially extending around the main body; and a core part disposed at the second end of the main body and contained inside the lateral wall of the main body, wherein the core part has an end surface for pressing against at least an end surface of one of the work pieces when the rivet is being operated to rivet the work pieces, to allow materials of the work pieces flow outwardly of the core part. An accommodation space is formed between the core part and the lateral wall to receive materials of the work pieces flowing into the space and deform outwardly at least a portion of the lateral wall of the main body.

Examples of rivet-type fastener are described. The rivet-type fastener may further include a fastener pin. The fastener pin includes a planar head portion and a shaft longitudinally extending from the head portion. The fastener pin may further include a cantilevered snap element at a distal end of the shaft. A portion of the cantilevered snap element is flexibly moveable with respect to the axis of shaft. The rivet-type fastener comprises a fastener body which in turn comprises a collared portion with a central opening. A plurality of elongated portions extend orthogonally from the collared portion, wherein the elongated portions are radially positioned about the central axis and about the edges of the central opening.

A self-piercing rivet (SPR) joint includes a top layer including at least one steel material or at least one aluminum material, a middle layer including at least one magnesium material, and a bottom artificial aluminum layer including at least one aluminum material.

Examples of rivet-type fastener are described. The rivet-type fastener may further include a fastener pin. The fastener pin includes a planar head portion and a shaft longitudinally extending from the head portion. The fastener pin may further include a cantilevered snap element at a distal end of the shaft. A portion of the cantilevered snap element is flexibly moveable with respect to the axis of shaft. The rivet-type fastener comprises a fastener body which in turn comprises a collared portion with a central opening. A plurality of elongated portions extend orthogonally from the collared portion, wherein the elongated portions are radially positioned about the central axis and about the edges of the central opening.

A self-punching functional element serves for the fastening to a workpiece and comprises a head part that has an abutment surface for introducing a punching force directed in a punching direction into the functional element and a rivet section that extends away from the head part in the punching direction and that comprises a free end that is provided with a first punching edge for punching a slug out of the workpiece. The functional element further comprises a functional section that has a punching pilot that is radially surrounded by the rivet section, that extends away from the head part in the punching direction, and that has a second punching edge for punching a hole into the slug. The second punching edge is set back with respect to the first punching edge in the punching direction.

A component holder, in particular for aircraft, for indirectly securing components to the fuselage or body shell. The component holder has a base portion and an attachment element which is lockable to the base portion and has a component receiving member arranged thereon. The base portion has a circular shell form, and the upper edge has retention and locking elements. The lockable attachment element has a s dome-like basic structure, and the lower edge region has retention and locking elements which complement those of the base portion and are lockable therewith. The component receiving member is formed integrally on the attachment element and arranged at a dome zenith on the outer side. The dome is formed from at least three frames which are angularly offset on the circumference. The frames extend from the dome lower edge region to the base location of the component receiving member at the dome zenith.

An assembly (110) comprising a core (113) and at least a first sheet (111) held on one side of the core by a rivet (120), the rivet having two ends (121, 122). At least a first one of these ends (121, 122) is flared in shape and extends at least through the entire thickness of the first sheet (111, 112). A method of fabricating such an assembly, in which: a core (113) and a first sheet (111) are provided; the first sheet (111) is placed on one side of the core (113); and the core (113) and the first sheet (111) are riveted together.