A functional element for pressing into a workpiece comprises a functional section; and a fastening section having an abutment surface for introducing a press-in force into the functional element; a workpiece contact surface that is disposed opposite the abutment surface; and a sealing region for receiving displaced material of the workpiece, said sealing region being disposed between the workpiece contact surface and the functional section and forming a contact surface for the displaced material to seal a connection between the functional element and the workpiece, wherein the contact surface has a first part surface, which extends obliquely to an axial direction and which converges viewed in a press-in direction of the functional element, and a second part surface that adjoins the first part surface, that extends obliquely to the axial direction of the functional element, and that diverges viewed in the press-in direction of the functional element.

The present disclosure provides a fastener. The fastener includes an elongated body having a first end and a second end opposite the first end. The fastener also includes a head having a first surface and a second surface opposite the first surface. The first end of the elongated body is coupled to the second surface of the head, and a diameter of the head is greater than a diameter of the elongated body. The fastener also includes a sleeve positioned over at least a portion of the elongated body and the second surface of the head. The fastener also includes a plurality of textured elements positioned on an exterior surface of the sleeve adjacent the second surface of the head. One or more of the plurality of textured elements extend from the exterior surface of the sleeve to the first surface of the head.

A fastening apparatus includes a head element for abutting a first edge region of a component opening and an anchor foot element for rear engagement with a second edge region lying opposite the first edge region. The anchor foot element has a base section extending from the head element in axial direction and four locking arms arranged in pairs and connected to the base section. Each pair of locking arms is configured in order to be pivotable relative to an axial central plane of the fastening apparatus, and each pair of locking arms has locking/centering stages arranged offset from one another in axial direction. A locking/centering stage comprises a centering surface for centering the fastening apparatus relative to a component opening and a locking surface for rear engagement with a component opening. A locking surface and a centering surface of a locking/centering stage are arranged approximately orthogonally to one another.

An attachment device for attaching a component to a support component, in particular a support component of a vehicle, includes a retaining element which can be inserted into an opening of the support component and which has a latching feature for releasably latching to the opening of the support component. A locking element can be inserted into the retaining element, wherein, when the locking element is inserted into the retaining element, the latching feature of the retaining element is/are blocked so as to prevent release of the latching. The retaining element has a sealing ring for bearing in a sealing manner against the opening of the support component, which sealing ring, when inserted into the opening of the support component, bears in a sealing manner against opposite sides of the support component.

A coating device for coating a fastener with a coating material. The device includes: a distribution device for distributing the coating material, including at least one distribution nozzle; a holder for holding the fastener; a drive for causing relative movement of the fastener and of the distribution nozzle relative to one another; a controller for controlling the distribution device and able to synchronize the operation thereof in order to apply at least one line of coating material on the fastener.

A design is provided for a component and for an opening in a wall of a product which is to receive the component. The component has a barrel for passing through the opening with a set of lugs at the end of the barrel. Each lug has a clamping surface facing a head part of the component, and the region between the clamping surface and the head part forms a clamping zone. The opening is for example circular. A stepped thickness portion of the wall follows an arc from a locally thinnest portion to a locally thickest portion. The steps and/or the lugs are sloped upwardly towards the locally thickest end of the arc. To fit the component, it is inserted through the opening (for example with the lugs deforming inwardly) and then twisted. The twisting engages the lugs with the stepped thickness portion, providing a progressive ratcheted clamping function.

A press-in retainer is configured to join a surface element to a support structure that has an acceptance opening. The press-in retainer includes a retainer head including a collar, a platform, and a neck disposed between the collar and the platform. The retainer head is configured for placement into a channel defined by the surface element. A seal is disposed about a perimeter of the collar and includes a main body and a sealing foot. The sealing foot is connected to the main body by a living hinge extending along a perimeter of the main body and is disposed entirely outboard from the collar. A clip portion extends from the collar of the retainer head. The clip portion is configured for insertion into the acceptance opening of the support structure and includes two or more wing elements.

A fastener assembly including a hollow and structurally collapsible stem over an intermediate extending range, a solid end most extending portion being structurally rigid. A receiving portion is constructed of a deformable material having a surface, within which is configured an inner rim defined edge of a deformable material. The inner rim edge can include either of a flat profile or a chamfered shape with a narrowed profile, a diameter of an aperture bounded by the chamfered edge being less than a diameter of the solid end portion so that, upon insertion and passage of the solid portion through the narrowed rim profile, initial deformation of the chamfered rim edge shape preceding alignment of the interiorly hollowed portion, which is subsequently caused to exhibit a controlled collapse by the rim edge in order to secure the stem within the receiving portion.

A blind fastener for connecting panels includes a bolt and nut. The bolt includes a shaft, bolt head, and lug. The bolt head is between the shaft and lug. The shaft defines external threads opposite the bolt head. The lug includes a first tool engagement portion and first frangible portion that connects the lug and bolt head. The nut includes a sleeve, nut head, and handling member. A central bore of the sleeve receives the shaft and defines internal threads mated with the external threads. The nut head is between the handling member and sleeve. The nut head extends radially from the sleeve and defines a recess that receives the bolt head. The handling member surrounds a portion of the lug. The handling member includes a second frangible portion and a second tool engagement portion. The second frangible portion couples the second tool engagement portion to the nut head.

A rivet-like fastener assembly adapted to be mounted in a hole through a wall having front and rear surfaces and comprising a body having a head portion and a hollow shank portion extending axially from the head portion and having an internally threaded section and an intermediate section, the head portion having an inner radial section having a first axial thickness between a front head surface and a first portion of a rear head surface and an outer radial section having a second axial thickness between the front head surface and a second portion of the rear head surface, the first axial thickness being greater than the second axial thickness, the first portion of the rear head surface adapted to abut a portion of the wall, and an elastomeric seal adapted to be compressed between the second portion of the rear head surface and the wall.