The invention relates to a functional element, in particular to a bolt element, for attachment to a workpiece, in particular a sheet metal part. The functional element comprises a fastening section that has a reshaping section that can be reshaped to fasten the functional element to the workpiece, in particular wherein the reshaping section is a rivet section, and a functional section having a functional region, wherein the functional section is connected, in particular is rotationally fixedly connected, to the fastening section. The fastening section and the functional section are produced from different materials.

The invention relates to a functional element, in particular to a bolt element, for attachment to a workpiece, in particular a sheet metal part. The functional element comprises a fastening section that has a reshaping section that can be reshaped to fasten the functional element to the workpiece, in particular wherein the reshaping section is a rivet section, and a functional section having a functional region, wherein the functional section is connected, in particular is rotationally fixedly connected, to the fastening section. The fastening section and the functional section are produced from different materials.

A steering column for a motor vehicle may include a crash device that has at least two components that have mutually facing surfaces. The at least two components may be connected to each other by means of a shear element that is arranged in an opening passing at least partially through the components such that the shear element is broken in two if the components move relative to each other. To improve the predetermined breaking connection, the opening may have, in at least one edge region bounding one of the mutually facing surfaces, a widened portion that extends at least over a partial circumferential region and is open towards the respective other surface.

A steering column for a motor vehicle may include a crash device that has at least two components that have mutually facing surfaces. The at least two components may be connected to each other by means of a shear element that is arranged in an opening passing at least partially through the components such that the shear element is broken in two if the components move relative to each other. To improve the predetermined breaking connection, the opening may have, in at least one edge region bounding one of the mutually facing surfaces, a widened portion that extends at least over a partial circumferential region and is open towards the respective other surface.

A self-piercing rivet joint, having at least two components made of formable metallic materials having a strength up to 300 MPa, which are connected to one another in a riveting procedure, in which a self-piercing rivet pierces the first, stamp-side component with a setting force and is driven into the second, die-side component, specifically while maintaining a residual base thickness in the second component and while spreading out the self-piercing rivet to a spreading diameter in the second component. The self-piercing rivet is compressed after the riveting procedure down to 60% of its starting length and the spreading diameter is enlarged up to 140% to 150%, in particular to up to 140% of the rivet shaft diameter, specifically without damaging the self-piercing rivet by self-piercing rivet material cracks.

A system is provided for attaching a layer of a metal to other layers in a material stack-up using a metal mechanical fastener that does not allow for direct contact between the fastener and the metal layer, thereby neutralizing any galvanic reaction between the metal sheet and the fastener and avoiding corrosion. The metal layer may be any of several metals, including magnesium. The fastener is a rivet, a screw or a bolt. The disclosed inventive concept uses an insulating layer to insulate the magnesium layer. In one embodiment, a layer of a thin metal is formed over the insulating layer. Where the fastener is a rivet and the metal is magnesium, the insulating layer and thin metal provide a barrier between the magnesium layer and the rivet prongs following rivet insertion, thus isolating the rivet. The system enables a greater application of fastener joining, particularly with magnesium and mixed material joining.

The invention is an incrementally adjustable rivet fixture used to join two or more items of varying thickness.

The invention is an incrementally adjustable rivet fixture used to join two or more items of varying thickness.

A hook includes a hook seat, a rivet, and a fixing bolt. A rivet cap and a rivet post are provided on the rivet. The rivet post includes a rivet rod and a rivet seat. A diameter of the rivet seat is greater than a diameter of the rivet rod. A first step is formed between the rivet rod and the rivet seat. A first cut surface and a second cut surface are provided on both sides of the rivet rod, respectively. The rivet and fixing bolt are matched with each other and fixed to the hook seat. The first step abuts against one side of the hook seat. An end face of the fixing bolt abuts against the other side of the hook seat to lock the hook seat between the fixing bolt and the first step.

A hook includes a hook seat, a rivet, and a fixing bolt. A rivet cap and a rivet post are provided on the rivet. The rivet post includes a rivet rod and a rivet seat. A diameter of the rivet seat is greater than a diameter of the rivet rod. A first step is formed between the rivet rod and the rivet seat. A first cut surface and a second cut surface are provided on both sides of the rivet rod, respectively. The rivet and fixing bolt are matched with each other and fixed to the hook seat. The first step abuts against one side of the hook seat. An end face of the fixing bolt abuts against the other side of the hook seat to lock the hook seat between the fixing bolt and the first step.