Abstract: A riveted joint comprising: an upper workpiece and a lower workpiece, and a self-piercing rivet. The rivet in an undeformed state, before the creation of the riveted joint, included: a head defining a head diameter (DH); a shank defining a shank diameter (DS); and a foot end opposite the head. Radially outward at the foot end is a flat surface facing away from the head; and an axial recess located radially inward of the flat surface, partly defined in the foot end, open axially away from the head, and frustoconical in longitudinal cross section. The axial recess defining an axial depth (LB). The ratio of recess axial depth (LB) to shank diameter (DS) is less than 0.3. And in a deformed state, after the creation of the riveted joint, the rivet extends through the first workpiece and penetrates the second workpiece; and the head bears against the upper surface.

Abstract: A connecting member, a receiving member, a housing, and a display device are provided. The connecting member includes a columnar body, and a securing member at a first end of the columnar body. The securing member is elastically deformable to detachably connect the connecting member and a receiving member.

Abstract: A nut is caulked and fixed to a plate material and a protrusion at an end of a collar is press-fitted into a recessed groove generated on the opposite surface of the plate material at the time of the caulking fixation, thereby fixing the nut and the collar to both surfaces of the plate material, respectively. The plate material is, for example, a metal panel, and the nut is, for example, a pierce nut. Since the collar is caulked and fixed, thermal strain is not generated.

Abstract: A self-punching press-fit element, in particular a punching nut, has a head part with a head bearing for bearing on a component, as well as a punching collar having an end-side cutting edge. An undercut is configured between the punching collar and the head bearing. An encircling displacement web is configured so as to adjoin the punching collar on the head bearing, the encircling displacement web being adjoined in the radial direction by a further external region of the head bearing. The further external region in the longitudinal direction is set back in relation to the displacement web. During the configuration of the press-fit connection, material is press-fitted from the upper side of the component into the undercut by the displacement web. A deformation of the lower side of the component is preferably not performed.

Abstract: The invention relates to a method for anchoring a joint element (1) in a metal sheet (7) so as to be secured against rotation, the hardness of the metal sheet being equal to or greater than the hardness of the material of the joint element. A locking and securing portion (4), which protrudes away from a head (2) of the joint element, is inserted into a joint opening (8), which is provided in the metal sheet and which has a cross section that deviates from the circular shape, such that an edge of the joint opening forms at least one region with a maximum distance to a central axis of the joint opening and at least one region with a minimum radial distance to the central axis of the joint opening, and the head of the joint element rests against the metal sheet after being anchored.

Abstract: A die button for installation of a nut to a panel includes a button body with a panel end, and a cavity defined therein. An aperture is defined in the panel end at a mouth of the cavity. A shearing edge is at a perimeter of the aperture to shear a tab from the panel when a shearing force is applied to the panel by the nut driven by a punch of a press. A relief is in a portion of the perimeter of the aperture to bend a root portion of the panel connecting the tab to the panel without severing the root when the nut applies the shearing force. A reaction member is slidably disposed within the cavity. A resilient member is disposed within the cavity to urge the reaction member toward the panel end, thereby bending the tab to contact the nut and seal a bore.

Abstract: A method for fixing a piercing nut includes placing on a punching die a metal plate. A pilot portion is provided at a bearing surface of a nut main body of the piercing nut. A height from the bearing surface to an end face of the pilot portion is smaller than a thickness of the metal plate. The pilot portion is pressed to a first surface of the metal plate to be struck into the metal plate so that an inner peripheral surface of a punching opening portion of the metal plate engages with an outer peripheral surface of the pilot portion to fix the piercing nut to the metal plate. The end face is positioned between the first surface and a second surface of the metal plate. A punching slag is downwardly pushed to discharge the punching slag to a punching hole of the punching die.

Abstract: A method of manufacturing an insert nut having a diamond lattice structure comprises cutting and forging a metal rod and thus preparing a forged article having a flange and a nut body; pressing-in the forged article between a first thread rolling die formed with a first annular die protrusion and a left diagonal die protrusion for forming a left diagonal line of a diamond lattice and a second thread rolling die formed with a second annular die protrusion and a right diagonal die protrusion for forming a right diagonal line of the diamond lattice; and pressing the forged article with the thread rolling dies, and then moving up and down each of the thread rolling dies so that a plurality of diamond lattices and an annular protrusion are arranged on the external circumferential surface of the nut body.

Abstract: A self-piercing hollow press-in element, in particular a nut element for attachment to a sheet metal part, wherein the press-in element has a flange part of a larger diameter and a shaft part of a smaller diameter. The shaft part extends away from the flange part and has a circular piercing edge at its end face remote from the flange part. The side of the flange part facing the shaft part forms a sheet metal contact surface in ring shape and features providing security against rotation are provided at the shaft part which extend approximately from the level of the sheet metal contact surface over a part of the length of the shaft part along the latter. A ring-like recess is provided radially within the ring-shaped sheet metal contact surface in the flange part and excess material for the shaft part which arises during manufacture of the ribs providing security against rotation is located within the ring recess.

Abstract: The invention relates to a functional element comprising a longitudinal axis, a body part, a hollow pressed part, an annular supporting surface which is arranged on the body part, substantially extended in a perpendicular direction with respect to the longitudinal axis and is radially displaced away from the pressed part and an annular groove which axially extends and is embodied in the body part radially inside the supporting surface. Locking ribs are preferably provided and at least partly cross the annular groove and the free end of the pressed part is provided with an annular cutting edge. The invention functional element is characterized in that an annular bulge is embodied on the pressed part between the annular supporting surface and the free end of the pressed part and an annular cavity is embodied around said pressed part between the bulge and the front free end thereof.

Abstract: A piercing fastener is attachable to a panel without a hole by penetrating its surface. The fastener further includes means for attachment of a device to it so that the fastener acts as an intermediate component attaching the device to the panel. The fastener has either male or female attachment means and further includes an outside surface extending from a top end to a bottom end. Near the bottom end, a reinforcement collar includes an annular top surface for receiving a downward pressing force to install the fastener into the panel. A displacer and undercut are located immediately below the collar to effect and receive a cold flow of deformed panel material to secure the fastener to the panel. A plurality of axially extending circumferential teeth are located immediately below the undercut and comprise triangular knurls with sharp edges which penetrate the sheet as the fastener is applied. The bottom of the fastener terminates in a sharp circular cutting edge for penetrating the panel.

Abstract: A T-nut includes a cylindrical shaft section that opens at both ends and includes an internal thread at an inner peripheral surface thereof; a flange that extends outwardly from a first end portion of the shaft section; and a sealing member that seals the first-end-portion-side opening of the shaft section, and is formed of elastomeric resin. The sealing member includes a circular cylindrical portion and a dome-shaped cover, the circular cylindrical portion closely contacting the inner peripheral surface and opening at a first-end-portion side, the cover being formed continuously to an edge of the circular cylindrical portion at a second-end-portion side, a top of the cover facing the second-end-portion side, an outer peripheral surface of the circular cylindrical portion having an externally threaded long-and-narrow protruding portion that seals a space at a root of the internal thread.

Abstract: A functional element having a functional portion, a generally tubular rivet portion and a ring-like sheet metal contact surface is characterized in that features of shape are provided at the rivet portion for co-movement of the sheet metal part during the formation of the rivet bead, in particular at the free end of the rivet portion and/or at the radially outer side of the rivet portion, at least in the region adjacent the free end of the rivet portion. A component assembly comprising a functional element and a sheet metal part as well as a method for the attachment of a functional element to the sheet metal part are also claimed.

Abstract: A self-piercing rivet includes a substantially cylindrical shank having an outside diameter and a head. The shank has a central blind bore that defines an inside diameter and an annular piercing end spaced from said head. The ratio of the difference between the outside and inside diameters of the shank in the region around the bore to the outside diameter of the shank is in the range 0.47 to 0.52.

Abstract: A press-in element for pressing into a non-pierced or pre-pierced component, in particular a sheet metal part is described. The press-in element has a head part having a ring surface confronting the component and a neck part which projects away from the ring surface, i.e. from the component contact side. The head part further has a ring-like projection surrounding the neck part with a radial spacing and projecting away from the ring surface and the neck part has a radially outwardly projecting ring bead, which can be formed as a continuous ring bead or as a ring bead interrupted at points, with the apex of the ring bead having an axial spacing from the ring surface which is larger than the axial spacing of the apex of the ring-like projection from the ring surface, which lies radially within this projection and together with it and the ring bead forms a pocket which receives material of the component.

Abstract: A method for providing an electrically conductive connection between an electric terminal device having a cavity, such as a cable shoe, and a sheet metal part. A hollow fixing element is riveted to the sheet metal part to prevent torsion, thus producing an electrically conductive connection between the fixing element and the sheet metal part. The assembled component is then provided with an electrically non-conductive or poorly conductive protective coating, such as a lacquer coating or powder coating. A receptacle for the electric terminal device is configured in the vicinity of the front face of the fixing element, to which the electrical terminal device is attached. The receptacle prevents the torsion of the terminal device in relation to the fixing element. The sheet metal part and a thread forming or cutting screw is screwed through the cavity of the electric terminal device into the hollow fixing element. The screwing action forms or cuts a thread.

Abstract: The invention relates to a functional element (10) comprising a longitudinal axis (14), a body part (16), a hollow pressed part (18), an annular supporting surface (20) which is arranged on the body part, substantially extended in a perpendicular direction with respect to the longitudinal axis and is radially displaced away from the pressed part and an annular groove (21) which axially extends and is embodied in the body part radially inside the supporting surface. Locking ribs (26) are preferably provided and at least partly cross the annular groove and the free end (28) of the pressed part is provided with a annular cutting edge (30). The inventive functional element is characterised in that an annular bulge (32) is embodied on the pressed part between the annular supporting surface and the free end of the pressed part and an annular cavity (34) is embodied around said pressed part between the bulge and the front free end thereof.

Abstract: Rotationally symmetric self-pierce rivet (10) having a rivet head (14) and a rivet shank (12) provided with a centrical recess (16) closed by the rivet head (14), wherein the rivet shank (12) is having an outer contour which generally is following the course of an ellipse (18) externally lined up against the rivet shank the major axis (A) thereof basically extending parallel to the axis of the rivet (10).

Abstract: A metal clinch fastener has portions thereof selectively hardened to enable use of the fastener with metal members of differing hardness values. The selective hardening of the fastener enables mounting with application of required forces for piercing and/or plastic deformation of the metal member without undesirable deformation or distortion of the fastener. The screw thread region or zone of the fastener has a relatively lesser hardness suitable and may be pre-threaded or later threaded by engagement with a thread forming screw.

Abstract: A fastener with a flange having two pairs of parallel sides and arcuate corners. Extending upwardly from the top surface of the flange is an elongated shaft having one region adjacent the flange having relatively thicker threaded walls and another distal from the flange having thinner unthreaded walls. Two prongs are formed by making cuts in opposing straight sides adjacent to the diagonally opposing arcuate corners, and then bending peripheral portions of the flange including the arcuate corners adjacent to the cuts in a direction upwardly by substantially 90°. The depth of the cuts is such that when bends are made, the perpendicular distance between front surfaces of the two prongs is less than an outer diameter of the shaft. When the fastener is inserted in a piece of material, the prongs dig into the surface of the material to prevent the fastener from rotating when a threaded fastener is screwed into the shaft.

Abstract: A tee-nut fastener which includes a nylon locking ring located distally from the entrance to a passageway ensures proper fastening upon coupling with a threaded stud. The tee-nut is used use in combination with a track for efficient delivery. The track comprises an upper guide spaced apart relatively farther than a lower guide. The process for making the tee nut uses a cold heading process. The tee-nut includes a flange having an upper portion and a lower portion. A shank extends perpendicularly from the upper portion and a head extends oppositely from the shank and perpendicularly from the lower portion. The flange includes at least two teeth extending in the direction of the shank and a passageway through the shank, flange and head. The passageway includes a bore countersunk at both ends thereof, a cavity, and threads therein.

Abstract: The invention relates to a rivet nut (10) with a base part (12) and a cylindrical rivet section (14), the base part having a central threaded cylinder (16), an annular contact surface (18) that is coaxial to the threaded cylinder in a plane (20) perpendicular to the longitudinal axis (22) of the threaded cylinder, and that has an axially aligned annular groove (24), said groove being arranged radially inside the annular contact surface and radially outside the cylindrical rivet section and said groove blending, on the radially inner side, into the outer surface of the cylindrical rivet section, and antirotation ribs (42) being provided in the area of the annular groove.

Abstract: The invention relates to a T-nut insertion method and an apparatus of the type for driving T-nuts into e.g. a wooden work piece with predrilled holes. A T-nut strip with improved and controllable rupture characteristics is also disclosed. Finally, embodiments of T-nuts with T-nut strip cutting protrusions or shapes are also disclosed. By applying the method according to the invention, a safe and precise insertion of T-nuts is obtained without the risk of T-nuts accidentally being driven from the apparatus and without the risk of the T-nuts being driven into the work piece at locations beside the predrilled holes.

Abstract: A torque resistant self-attaching fastener having a tubular barrel portion and a radial flange portion including a plurality of circumferentially spaced radial projections each having opposed planar generally radial side faces with the outer surface of the radial flange between the radial projections having a greater circumferential width than a circumferential width of the radial projections and a radial length less than the circumferential width. The side faces may be aligned with a radius, the side faces may be parallel or the side faces of adjacent radial projections may be parallel.

Abstract: The present invention is to avoid the flange portion of a T-nut of from overlapping the portion between the claws of another T-nut, while the T-nut is supplied on a supply track provided on a nut applying machine, and also to engage the projections formed between the claws into a fixing material when the T-nut is knocked into the fixing material. There is provided a T-nut formed of a metal material in an integrated manner, having a shank portion 49 and an octagonal or almost octagonal flange portion 50, and two pairs of claws 55 to 58. The shank portion 49 has a caulking portion 51 and a female screw portion 52. The caulking portion 51 is formed thinner than the female screw portion 52. Projections 64, 65 are provided between each of the pairs of claws, formed by bending convex portions integrally formed with the flange portion 50 toward the second end of the shank portion 49.

Abstract: A self-attaching nut having a central pilot projecting from an end face of the body portion, an annular groove surrounding the pilot and an annular panel support face surrounding the groove, wherein the outer side wall includes a plurality of circumferentially spaced notches, each having an outer wall which extends from the bottom wall of the annular groove to the panel support face and the bottom wall of the groove includes a plurality of circumferentially spaced radial ribs integral with either the outer or inner side walls of the annular groove having a radial end spaced from the opposed side wall and a top face inclined toward the bottom wall of the annular groove providing improved torque resistance and push-off strength. Alternating circumferentially overlapping radial ribs integral with the pilot and the outer groove wall and ribs which extend below the bottom wall of the groove are also disclosed.

Abstract: A clinch element including a body portion having an annular lip portion projecting from an end face of the body portion including an arcuate free end and a frustoconical outer surface. One embodiment includes an annular lip projecting from both end faces of the body portion. A method of attaching the clinch element to one or two panels which includes driving the free end of the lip portion against an outwardly inclined frustoconical chamfered face of a die cavity, deforming the annular lip over the panel and a die member having a projecting piloting point and an annular die cavity surrounding the piloting point.

Abstract: The invention relates to a functional element for attaching to a sheet metal part, such as for example a nut element or a bolt element comprising a body section or head section, which has a requisite cylindrical part on one axial end and runs into a cylindrical rivet section on its other axial end. Said element is characterised in that the body section is provided with an essentially cone-shaped region between the first axial end or a cylindrical section that may be provided there and the rivet section, said region forming a bearing surface for a corresponding cone-shaped region of a sheet metal part and that the cylindrical part, if present, has a diameter at the border with the cone-shaped region that is no greater than the maximum diameter of said cone-shaped region. When the functional element is attached to the sheet metal part, the narrow end of the cone-shaped region of said metal part is clamped in an annular protrusion, formed by the rivet section.

Abstract: Method of forming a sealed joint between a nut (20) having a cylindrical pilot (22), an annular flange portion (28) surrounding the pilot and a re-entrant groove (32) and a panel with a die having an annular lip (62) which deforms a panel portion into the groove (32) and simultaneously shaves an outer surface of the pilot onto the panel. The annular groove in the flange portion includes an arcuately inclined outer side wall (36) and an inner side wall (38) arcuately inclined toward the flange portion.

Abstract: The invention relates to a function element (10) comprising a head part (14) with an annular bearing surface (12) and tubular rivet segment (16) that is provided on the side of the bearing surface of the head part and that extends away from said head part. The invention is characterized in that a tubular guide segment (18) is concentrically disposed relative to the tubular rivet segment and radially inside said rivet segment, wherein an annular gap is provided between the guide segment and the rivet segment and the guide segment projects beyond the free end of the rivet segment.

Abstract: A tee-nut fastener which includes a nylon locking ring located distally from the entrance to a passageway ensures proper fastening upon coupling with a threaded stud. The tee-nut is used use in combination with a track for efficient delivery. The track comprises an upper guide spaced apart relatively farther than a lower guide. The process for making the tee nut uses a cold heading process. The tee-nut includes a flange having an upper portion and a lower portion. A shank extends perpendicularly from the upper portion and a head extends oppositely from the shank and perpendicularly from the lower portion. The flange includes at least two teeth extending in the direction of the shank and a passageway through the shank, flange and head. The passageway includes a bore countersunk at both ends thereof, a cavity, and threads therein.

Abstract: A functional element (10), for fixing to a piece of sheet metal (40), such as for example, a nut element or a bolt element with a body section or head section, comprising an annular flange (14) which transforms into a cylindrical rivet section, is characterised in that the transformation from annular flange into the rivet section is formed by an at least essentially conical surface, forming a contact surface for a corresponding conical region of a piece of sheet metal, which, on fixing the functional element to a piece of sheet metal, is clamped between the side of the annular flange facing the rivet section and an annular bead (50) formed from the rivet section. An assembled component and a method for the fixing of a functional element are also disclosed.

Abstract: A die (18) for use in a self-piercing rivet setting apparatus comprises a cavity (25) for receiving therein a protruded workpiece zone consisting of respective portions of the workpieces (2, 3) to be protrudingly deformed toward the die through the pressure of the self-piercing rivet (1). The cavity has a bottom surface provided with a central raised portion (29) protruding from the center of the bottom surface toward a punch. The central raised portion of the cavity has a vertical angle in the range of 90 to 160 degrees. Preferably, the central raised portion has a top formed in a spherical shape. The cavity has an approximately cylindrical outer wall (27) in the periphery thereof. The cavity has a curved inner surface extending from the top of the central raised portion to the lower end (33) of the outer wall through the bottom (35) of the cavity.

Abstract: A fastening element capable of being attached to a panel by deforming the panel is disclosed. A barrel portion is tubular with an open free end and has an axis defining a circumference. A radial flange portion is integral with the tubular barrel portion opposite the free end and defines a circumferential surface. The radial flange portion includes a plurality of projections spaced apart and extending outwardly from the circumferential surface. Each of the projections defines at least one wall generally perpendicular to the circumference about the axis of the barrel portion.

Abstract: A fastener nut for hydroformed parts comprises a nut body for receiving a threaded fastener and a locking ring with depending fingers that is received on the nut body. The nut body is adapted to pierce and then form a collar thereabout in a hydroformed part while the part remains in a die cavity under hydroforming pressure. The nut body and the collar formed thereby have a configuration that prevents turning of the locking ring while permitting turning of the nut body relative to the locking ring on full insertion of the nut in the collar, and a cam surface on the nut body that on partial turning of the nut body then forces the locking ring into locking engagement with the collar to thereby attach the fastener nut to the hydroformed part.

Abstract: A self-attaching fastener for thick panels having a pilot and a groove in a flange portion including an inclined outer wall and a bottom wall having an inclined portion extending to the outer face of the pilot and a concave surface in the outer face of the pilot adjacent the bottom wall. A die set for various panel thicknesses each having a projecting lip including an end face and first and second inclined faces which deform the panel against the inclined bottom wall and beneath the concave surface of the pilot. And, a method of attaching the fastener to a metal panel, wherein the die lip deforms a panel against the inclined bottom wall portion adjacent the pilot portion, inwardly into the concave surface and outwardly beneath the groove outer wall.

Abstract: A symmetrical self-attaching female fastener including a body having a bore, and identical integral tubular barrel portions extending from opposed ends of the body coaxially aligned with the bore. The installation method includes driving either barrel portion through an opening in a panel, which may be formed by piercing the panel with the barrel portion, and simultaneously deforming both barrel portions radially outwardly and inwardly, wherein one barrel portion entraps the panel and the other exposed barrel portion is folded at an acute angle relative to the bore to reduce the overall length of the assembly.

Abstract: The invention concerns a functional element, in particular a bolt, consisting of a shank portion (14) and a head portion (16) designed to be assembled riveted with a plate element, in particular a sheet metal part. The invention is characterised in that the head portion (16) is hollow and has practically the same external diameter as the shank portion. When mounted, the hollow head portion (16) of the functional element (10) forms a riveting edge (37) on one side of the sheet metal part and an annular groove (52) on the other side of the sheet metal part, the annular groove (52) acting as a flange. The invention further concerns a method for fixing the functional element in a sheet metal part and the resulting assembling element (16), as well as a matrix and a swaging assembly.

Abstract: The preferred embodiment of a fastening system includes a self-piercing fastener having a thread-like pattern. In another aspect of the present invention, a fastener insertion machine employs an electromagnetic actuator without fluid actuation. A further aspect of the present invention uses a rotary-to-linear transmission within the machine to advance the fastener. In still another aspect of the present invention a self-piercing fastener is a clinch nut or a clinch stud.

Abstract: A raw parallelepiped metal piece is pressed into a closed mold to provide a nut blank that has a generally square pilot portion (14) for piercing a metal panel, the nut blank having a pair of flanges (16) that continue from opposite side walls (15) of the pilot portion. Then, the nut blank is coined to form ridges (20) extending along and integral with opposite upper edges of the side walls (15), before pressed within an open mold so that the ridges are swaged out sideways to form shoulders (21). A lateral groove (22) is defined between below each shoulder and in the side wall. A rough bore (23) will be formed axially through the pilot portion (14), before tapped to have a female thread (24) in the inner periphery of the bore.

Abstract: The self-attaching female fastener of this invention includes a re-entrant groove having a V-shaped bottom wall including relatively inclined bottom faces of equal width having an arcuate apex centered beneath the restricted opening to the groove. A die drives a panel portion through the restricted groove opening against the bottom faces, driving the panel portion into the apex and inwardly beneath the inclined inner side wall and outwardly beneath the inclined outer side wall of the groove, resulting in a better installation and accommodating a wider range of panel thicknesses. The V-shaped bottom wall also centers and balances the rolls during the rolling process resulting in a more accurate cross-section of the fastener.

Abstract: A self-attaching nut having a central pilot projecting from an end face of the body portion, an annular groove surrounding the pilot and an annular panel support face surrounding the groove, wherein the outer side wall includes a plurality of circumferentially spaced notches, each having an outer wall which extends from the bottom wall of the annular groove to the panel support face and the bottom wall of the groove includes a plurality of circumferentially spaced radial ribs integral with either the outer or inner side walls of the annular groove having a radial end spaced from the opposed side wall and a top face inclined toward the bottom wall of the annular groove providing improved torque resistance and push-off strength. Alternating circumferentially overlapping radial ribs integral with the pilot and the outer groove wall and ribs which extend below the bottom wall of the groove are also disclosed.

Abstract: A section (10; 110) is provided for the manufacture of hollow body elements, in particular for the manufacture of pierce and rivet nuts having a square or rectangular outline in plan view and a ring-like piercing section (36; 236) at a side confronting a component consisting of a sheet metal material or the like. The section (10; 210) is at least substantially rectangular in cross-section with two bars (14, 16; 214, 216) at the side (12; 212) later confronting the component. The bars are spaced apart and extend parallel to the longitudinal sides (18, 20; 218, 220) of the section, are likewise at least substantially rectangular in cross-section and form, in the finished element (11, 211), a feature providing security against rotation. The bars respectively each have an inclined flank (68, 70; 268, 270) at the inner side which forms an undercut (69, 71; 269, 271).

Abstract: A fixing element comprising a fixing section and a tubular stamped or riveted section in which the stamped or riveted section enable the fixing element to be placed on a metal part and the fixing section enables an object to be placed on the metal part. A bearing surface on a transition region between the fixing section and the stamped or riveted section extends in a radial or conical manner and optionally has torsional fixing features. The tubular stamped or riveted section free front end has a conical cutting surface which is divergent on the radially inner side in the direction of the free front end area and a rounded impact and traction surface on the radially outer side. The cutting, impact and traction surfaces meet at an annular edge on the free front end of the stamped or riveted section and are shaped to prevent shavings from occurring.

Abstract: The present invention provides a strut mount comprising an inner member (12) to which an upper extremity of a rod of a buffer is fixed, an outer member (14) attached to a vehicle while surrounding an outer circumference of the inner member, and an elastomer (16) interposed between both members to dampen vibration, wherein an attachment piece (28) of an outer fitting (14) and an attachment plate (2) of the vehicle body are curved in the form of a sphere to raise rigidity and improve vehicle running stability. Besides, a non-fastening surface portion (36) is provided by being lowered via a different level portion (34) around a bolt fastening surface portion (30) of the attachment piece (28), preventing rubber burr from being produced on the fastening surface. Furthermore, by the use of a caulking nut (52) stuck to the underside of the attachment piece (28), the weight of the products can be reduced, and cost reduction is accomplished by laborsaving during operations.

Abstract: This invention pertains fasteners which are characterized by easy insertion and extraordinarily difficult separation of items that they attach together. This is achieved by a combination of snapping segments with an elastic body disposed at least under the head of the fastener. The snapping segments may comprise anti-opening and/or anti-sliding portions, which immensely increase the strength with which the fasteners hold the objects together. The elastic body in the vicinity of the bottom section of the fasteners also provides water and gas proof properties, as well as elimination of squeaking noises. Vehicles comprising objects connected together by the fastening devices described and claimed herein are part of the instant invention.

Abstract: The present invention provides a T-nut having an improved structure capable of preventing a liquid, such as oil or paint, from entering into the inside of a shank of the T-nut. The T-nut has a tubular shank having a first end and a second end located on the other side of the first end, and a flange extending outward from the first end of the shank. The shank and flange are made of metal material and formed integrally. At least a part of the shank is formed as an internally threaded portion. The T-nut comprises a bottom-sealing member located adjacent to the first end of the shank to seal the bottom of the tubular shank.

Abstract: The present invention provides a method of joining a sheet metal part to a metal tube to form an assembly. In an overlapping configuration, the parts are held together under a clamping force while a self-piercing rivet is driven through the assembly by a welding electrode. The rivet pierces and passes through the sheet metal part and then through at least substantial portion of the metal tube to thereby form a mechanical interlock. An electrical current is then applied to this mechanical retention to melt a portion of the rivet as well as a portion of the metal surrounding the joining region. The flow of electrical current is then stopped after several welding cycles where the now melted material is allowed to solidify upon cooling, thereby forming a weld.

Abstract: The present invention is a self-piercing rivet wherein the hollow shell has an external axial asymmetry wherein the asymmetry is with respect to the axis of rotation of the hollow shell. Once installed in a stack of sheets, the asymmetric self-piercing rivet prevents relative sheet rotation of the sheets relative to the axis because of rotational interference caused by the external axial asymmetry of the hollow shell.

Abstract: The present invention is a self-piercing rivet wherein the hollow shell has an external spiraling, wherein the spiraling is with respect to the axis of rotation of the hollow shell. Once installed in a stack of sheets, the spiraling prevents the riveted sheets from mutually separating and the rivet loosening with respect to the sheets.