DE2926940A1 - Blind rivet with grooved driving punch - has base slotted in several places and bending outwards from hollow shank - Google Patents

Blind rivet with grooved driving punch - has base slotted in several places and bending outwards from hollow shank

Info

Publication number
DE2926940A1
DE2926940A1 DE19792926940 DE2926940A DE2926940A1 DE 2926940 A1 DE2926940 A1 DE 2926940A1 DE 19792926940 DE19792926940 DE 19792926940 DE 2926940 A DE2926940 A DE 2926940A DE 2926940 A1 DE2926940 A1 DE 2926940A1
Authority
DE
Germany
Prior art keywords
rivet
base
punch
wall
several places
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE19792926940
Other languages
German (de)
Inventor
Otto Ing Grad Nast
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19792926940 priority Critical patent/DE2926940A1/en
Publication of DE2926940A1 publication Critical patent/DE2926940A1/en
Ceased legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04Rivets; Spigots or the like fastened by riveting
    • F16B19/08Hollow rivets; Multi-part rivets
    • F16B19/10Hollow rivets; Multi-part rivets fastened by expanding mechanically
    • F16B19/1027Multi-part rivets
    • F16B19/1036Blind rivets
    • F16B19/1081Blind rivets fastened by a drive-pin

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)

Abstract

The rivet has a driving punch moving in the driving direction, being suitable for blind riveting. At the free end of the punch hollow shank is a base (3) slotted in several places, and at least double the thickness of the shank wall (12). Thus only the wall segment (4) bends round the hole edge (6), maintaining the angle (a) between base and wall and forming a locking crown (8) of a definite pattern. The base can be arched inwards, and the driving punch can have annular grooves into which the edges of the base segments snap, preventing the punch (5) from falling out.

Description

"Befestigungsniet zun Blindnieten von "Fixing rivet to blind rivets from

Blechen und Konstruktionen " Die Erfindung betrifft einen Be estiDungsniet, der mit in Eintreibrichtung bewegllcheni Auftreibelement eingesetzt wird, insbesondere fir nur einseitig zugängliche Nietver@indungen. Sheets and constructions "The invention relates to a fastening rivet, which is used with a driving element movable in the driving direction, in particular for rivet connections that are only accessible from one side.

Bei derartigen ietverfahren will man durch Betätigen von nur einer Seite aus, eine sichere Nietverbindung schaffen, wie dies vor allem bei nur einseitig zuganglichen Hohlkörpern wie Rohren, Blechkanalen, geschlossenen Raumteilen = lSie sie beim Flugzeugbau und vielen anderen Konstruktionen vorkommen = erforderlich iet.With such a method you want by pressing only one Side out, create a secure rivet connection, as this is especially the case with only one-sided accessible hollow bodies such as pipes, sheet metal ducts, closed room parts = you they occur in aircraft construction and many other constructions = required iet.

Ähnlich unlösbare Verbindungselemente sind unter dem Saiiunelbegriff "Blindnietr' bekannt. Ihre Vernietung geschieht meist durch Aufweiten des freien Schaftendes mit einem Aufweitdorn, der entgegen der Eintreibrichtung gezogen oder geschraubt wird; oder durch pyrotechnisches Sprengaufweiten.Similar non-detachable connecting elements are under the term Saiiunel "Blind rivet" known. Their riveting is usually done by widening the free Shank end with an expanding mandrel that is pulled or pulled against the driving direction is screwed; or by pyrotechnic explosive expansion.

Ein anderes Verfahren ist das in der Offenlegungsschrift 2141119 aufgeführte Verfahren mit Auf treibstift. Hierbei wird ein Schaftausdehnungsstift in die Bohrung des Hohlschaftes eingetrieben, der das ausdehnbare Eindringende des Schaftes radieal aufweitet. Blindniete mit Schaftausdehnungsstift sind in dem Auftreibmass sehr begrenzte Es bildet sich kein reeller Schliesskopf und man kann die Verbindung allenfalls als Heften bezeichnenO Diese Verfahren sind auch teils sehr umständlich und erfordern teure Setzwerkzeuge. Das Verspannen der mehrschichtigen Blechpakete gegeneinander ist nicht zimmer gesichert, so dass sie sich nach kurzer Zeit losrütteln können, Dieses gilt auch für Blindniete mit Schraubverbindungen, die deshalb gesonderte Schraubsicherungen notwendig machen.Another method is that listed in laid-open specification 2141119 Procedure with a drive pin. A shaft expansion pin is inserted into the bore of the hollow shaft, which radially encompasses the expandable penetrating end of the shaft expands. Blind rivets with shaft expansion pin are in the buoyancy very limited No real closing head is formed and the connection can be established at best refer to as staplingO These procedures are also very cumbersome in some cases and require expensive setting tools. The tensioning of the multilayer sheet metal stacks each room is not secured against each other, so that they shake loose after a short time can, This also applies to blind rivets with screw connections, which are therefore separate Make screw locks necessary.

Zur Lösung der Aufgabenstellung wird erfindungsgemäss vorgeschlagen, die Verbindungselemente als Hohlniet mit einem Boden- oder Ringwulst auszuführen, der mehrfach geschlitzt ist0 Dadurch gekennzeichnet, dass die Boden- oder Wulstdicke grösser ist als die der Wunde und in besonderem Fall nach innen gewölbt ist0 Die erforderlichen Nietlöchei können in bekannter Weise gebohrt oder durchgestochen werden0 Der Niet kann von Hand oder mit bekannten Vorrichtungen eingesetzt werden, bis die gewünschte Lage erreicht wird0 Dann wird in bekannter Weise ein angespitzer Auftreibdorn durch die Bohrung des Nietes gestossen, der die Segmente (7) des Bodens (3) seitlich wegschiebt ohne sie im Bereich des Bodens zu verbiegen, so dass die Segmente (7) eine gleichmässige Schliesskrone (8) bilden, indem die I5vandsegmente (4) über die Lochkante (6) biegen, Diese Biegung bewirkt gleichzeitig ein Zusammenpressen des zu vernietenden Werkstoffpaketes0 Der Niet wird durch die Auftreibkraft in axialer Richtung in das Nietloch gezogen, dadurch fest mit seinem Kopf (13) auf das Werkstoffpaket gedrückt, und dieses wird durch die Umbiegekraft der Wandsegmente (4) in entgegengesetzter Richtung gepresstO Dadurch wird ein festes Zusammenpressen der Werkstoffschichten bewirkt Die Erfindung lasst sich für fast alle Fälle der bekannten Nietformen wie Kopf-, Senknieten, Nietmuttern usw. anwenden, Anhand der Zeichnung, die Ausführungsbeispiele der Erfindung veranschaulicht, werden diese näher erläuterte Fig. 1 zeigt im Schnitt (b) und Aufsicht (a) das freie Ende des Nietschaftes mit dem Auftreibstift (5) in Ausgangs- (I) und Endstellung (II). Die Schlitze (1) reichen bis zur Tiefe (2) in das Werkstoffpaket hinein. Dringt nun das Auf treibelement (5) in axialer Richtung vor, so treibt es den geteilten Boden (3) auseinander und biegt das dünnere Wandsegmentteil (4) über die Lochkante (6) nach aussen und stellt die Bodensegmente (7) zu einer gleichmässigen Nietkrone (8)aufs Fig. 2 zeigt einen der Figur 1 entsprechenden Schnitt, bei dem jedoch der Boden (3) nach innen eine Wölbung (9) hatO Durch die Wölbung (9) wird bewirkt, das das Wandsegmentteil (4) bis zu maximal 900 um den Lochrand (6) abgebogen werden kann0 Fig. 3 zeigt ein Ausführungsbeispiel im Schnitt bei dem die Nietbohrung vercnloasen bleibt, Die Zei@@@@@ @ll@ einen Schnitt durch den eingesetzten Niet dar, Das Auftreibelement (5) besitzt in diesem Fall eine Ringnut (11) in welche die aufgestellten Bodensegmente (7) mit ihren Spitzen (7 b) einfedern und ein Herausfallen des in diesem Fall als Schliess-Stift gedachten Auf treibelementes (5) verhindert0 LeerseiteTo solve the problem, it is proposed according to the invention that to design the connecting elements as hollow rivets with a bottom or ring bead, which is slotted several times0 Characterized by the fact that the base or bead thickness is larger than that of the wound and, in a special case, is curved inwards0 The required rivet holes can be drilled or punched in a known manner 0 The rivet can be inserted by hand or with known devices, until the desired position is reached0 Then, in the known way, a sharpener is made Blowing mandrel pushed through the hole in the rivet, which forms the segments (7) of the bottom (3) pushes away to the side without bending it in the area of the floor, so that the Segments (7) form a uniform closing crown (8), by doing Bend the wall segments (4) over the edge of the hole (6). This bend causes the same time a compression of the material package to be riveted 0 The rivet is pushed through the Buoyancy force is drawn into the rivet hole in the axial direction, thereby firmly with his Head (13) pressed onto the material package, and this is caused by the bending force of the wall segments (4) pressed in the opposite direction Pressing the layers of material together causes the invention can be used for almost use all cases of the known rivet shapes such as head rivets, countersunk rivets, rivet nuts, etc., Based on the drawing, which illustrates exemplary embodiments of the invention, are FIG. 1, explained in more detail, shows the free end in section (b) and top view (a) of the rivet shaft with the driving pin (5) in the starting (I) and end position (II). The slots (1) extend into the material package to the depth (2). Urges now on the drive element (5) in the axial direction, it drives the split Floor (3) apart and bends the thinner wall segment part (4) over the edge of the hole (6) to the outside and turns the floor segments (7) into an even rivet crown (8) on FIG. 2 shows a section corresponding to FIG. 1, but in which the Bottom (3) inside one Arch (9) has O through the arch (9) causes the wall segment part (4) up to a maximum of 900 around the edge of the hole (6) can be bent0 Fig. 3 shows an exemplary embodiment in section in which the The rivet hole remains blocked, the line @@@@@ @ ll @ a cut through the inserted The rivet (5) in this case has an annular groove (11) in which compress the raised floor segments (7) with their tips (7 b) and prevent them from falling out of the drive element (5), which in this case is intended as a locking pin, prevents 0 Blank page

Claims (1)

Patentansprüche -o Befestigungsniet mit in Eintreibrichtung beweglichem Auftreibelement - geeignet für die Verwendung als Blindniet, d a d u r c h g e k e n n z e i c h n e t dass der Hohlschaft an seinem freien Ende einen mehrfach geschlitzten Boden (3) besitzt, der minimal doppelt so dick ist wie die Wanddicke (12) des Hohlschaftes und dadurch unter Beibehaltung des Winkels (α) zwischen Boden und Wand nur das wandsegment (4) um den lochrand (6) biegt, wodurch sich eine vorausbestimiabare Schliesskrone (8) bildet. Claims -o fastening rivet with movable in the driving direction Drifting element - suitable for use as a blind rivet, d a d u r c h g e k It is noted that the hollow shaft has a multiple slit at its free end The bottom (3) is at least twice as thick as the wall thickness (12) of the hollow shaft and thereby while maintaining the angle (α) between floor and wall only the wall segment (4) bends around the edge of the hole (6), whereby a predefinable Closing crown (8) forms. IIn Befestigungsniet nach Anspruch I. d a d u r ch g e -k e n n z e i c h n e t, dass der Boden (f) nach innen eine Wölbung (9) besitzt0 III. Befestigungsniet nach Anspruch Io und II. d a d u r c n g e k e n n s e i c h n e t, dass das Auftreibelement (5j Ringnuten (11) besitzt, in welche die Spitzen (7 a) der Bodensegmente (7) einfedern, und das AuCtreibelement (5) am Herausfallen hindert.In fastening rivet according to claim I. d a d u r ch g e -k e n n z e i c h e t that the bottom (f) has an inward curvature (9) III. Fastening rivet according to claim Io and II. d a d u r c n g e k e n n n s e i c h n e t that the expanding element (5j has annular grooves (11) into which the tips (7 a) of the floor segments (7) spring, and prevents the AuCtreibelement (5) from falling out.
DE19792926940 1979-07-04 1979-07-04 Blind rivet with grooved driving punch - has base slotted in several places and bending outwards from hollow shank Ceased DE2926940A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792926940 DE2926940A1 (en) 1979-07-04 1979-07-04 Blind rivet with grooved driving punch - has base slotted in several places and bending outwards from hollow shank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792926940 DE2926940A1 (en) 1979-07-04 1979-07-04 Blind rivet with grooved driving punch - has base slotted in several places and bending outwards from hollow shank

Publications (1)

Publication Number Publication Date
DE2926940A1 true DE2926940A1 (en) 1981-01-08

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DE19792926940 Ceased DE2926940A1 (en) 1979-07-04 1979-07-04 Blind rivet with grooved driving punch - has base slotted in several places and bending outwards from hollow shank

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4637765A (en) * 1984-07-18 1987-01-20 Nifco Inc. Two-piece expandable plastic rivet
DE3607660A1 (en) * 1986-03-08 1987-09-10 Schade Maschf Gustav Perforated plate fastening to a support structure, in particular in the case of screening machines
DE102006007707A1 (en) * 2006-02-12 2007-08-23 Adolf Würth GmbH & Co. KG Blind rivet for securing plates together has a central pin that is driven into body using an impact tool
DE102007011770A1 (en) * 2006-09-23 2008-04-03 Continental Teves Ag & Co. Ohg Rivet, to fasten overlapping components, has a hollow shaft with an inner shoulder at the end to be expended by a tool into a spread head
DE102009032683A1 (en) * 2009-07-09 2011-02-24 Läpple AG Under ride guard for guide rail comprises fastener and apron which extends between guide rails and ground, where holding elements are pushed in apron on rear side, and holding elements are fixed together
US8707539B2 (en) 2006-02-12 2014-04-29 Wurth International Ag Gun rivet
CN107893803A (en) * 2017-12-16 2018-04-10 布佳鑫 Detachable blind rivet

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4637765A (en) * 1984-07-18 1987-01-20 Nifco Inc. Two-piece expandable plastic rivet
DE3607660A1 (en) * 1986-03-08 1987-09-10 Schade Maschf Gustav Perforated plate fastening to a support structure, in particular in the case of screening machines
DE102006007707A1 (en) * 2006-02-12 2007-08-23 Adolf Würth GmbH & Co. KG Blind rivet for securing plates together has a central pin that is driven into body using an impact tool
US8707539B2 (en) 2006-02-12 2014-04-29 Wurth International Ag Gun rivet
DE102007011770A1 (en) * 2006-09-23 2008-04-03 Continental Teves Ag & Co. Ohg Rivet, to fasten overlapping components, has a hollow shaft with an inner shoulder at the end to be expended by a tool into a spread head
DE102009032683A1 (en) * 2009-07-09 2011-02-24 Läpple AG Under ride guard for guide rail comprises fastener and apron which extends between guide rails and ground, where holding elements are pushed in apron on rear side, and holding elements are fixed together
CN107893803A (en) * 2017-12-16 2018-04-10 布佳鑫 Detachable blind rivet

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