EP1943703A1 - Connection bolt, connection element and electrically conductive coupling apparatus - Google Patents

Connection bolt, connection element and electrically conductive coupling apparatus

Info

Publication number
EP1943703A1
EP1943703A1 EP06807636A EP06807636A EP1943703A1 EP 1943703 A1 EP1943703 A1 EP 1943703A1 EP 06807636 A EP06807636 A EP 06807636A EP 06807636 A EP06807636 A EP 06807636A EP 1943703 A1 EP1943703 A1 EP 1943703A1
Authority
EP
European Patent Office
Prior art keywords
connecting bolt
shaft
protective sleeve
bolt
foot
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.)
Withdrawn
Application number
EP06807636A
Other languages
German (de)
French (fr)
Inventor
Jochen Hain
Mahzuni Yagci
Ralf Pimper
Joachim Geist
Joachim Schneider
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.)
Newfrey LLC
Original Assignee
Newfrey LLC
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 Newfrey LLC filed Critical Newfrey LLC
Publication of EP1943703A1 publication Critical patent/EP1943703A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
    • F16B37/061—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/004—Sealing; Insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles

Definitions

  • the invention relates to a connecting bolt, in particular welding stud, with a shank and a foot, which is arranged at one end of the shank and intended for fastening of the bolt to a component.
  • the invention further relates to a connection element and an electrically conductive coupling device comprising a connection bolt and a connection element.
  • ground connections are required in numerous places, which connect the electrical equipment arranged in the vehicle with the vehicle ground.
  • the ground connections generally have a connection bolt, which is electrically conductively connected to the vehicle body by welding or other joining methods.
  • Connecting bolts of the specified type are known from DE 36 13 397 C2 and DE 94 13 406 U1.
  • the known terminal bolts have a threaded shank and a shoulder-shaped shoulder formed by a foot which forms a contact surface.
  • the known connecting bolts are available the assembly with a protective cap or a cap nut, which surrounds the shaft and fits tightly against the shoulder.
  • a contact element cap or cap nut Before the subsequent assembly of a contact element cap or cap nut must first be removed, which is cumbersome and requires additional installation work. If the cap nut is then used to fasten the contact element, then screwing and tightening the cap nut is time-consuming.
  • the invention has for its object to provide a terminal bolt of the type specified and a cooperating with him connection element and a coupling device formed therefrom, which allow a simple and quick installation.
  • the connecting bolt has a shaft with an outer surface which forms a contact surface for the attachment of a connection element, wherein the outer surface of the shaft is surrounded by a protective sleeve which covers the contact surface and which can be moved to a position on the shaft is, in which the contact surface is freely accessible.
  • the inventive design of the connecting bolt has the advantage that the removal of a protective cap or a cap nut is unnecessary. Instead, the protective sleeve can be moved relative to the shaft during the assembly of a connection element in such a way that the contact element can be brought into contact with the contact surfaces.
  • the arrangement of the contact surfaces on the shaft further has the advantage that the connection element can be mounted by plugging onto the shaft and that time-consuming screwing operations are eliminated.
  • the shank of the connecting bolt may have a smooth outer surface, but it may also be provided with a thread, so that the same bolt is also suitable for other fastening tasks.
  • the protective sleeve according to the invention can be made variable in length, preferably it has the shape of a bellows. It is sufficient to expose the contact surfaces when the protective sleeve in the axial direction is compressed, it being advantageous that the remaining small axial length of the protective sleeve requires only little space on the shaft of the connecting bolt.
  • the connecting bolt can therefore be made correspondingly short.
  • a flange which has a larger diameter than the foot and which is arranged at an axial distance from the attachment end of the foot.
  • a connection element arranged on the connecting bolt can be fixed in the axial direction. If the connecting bolt is a welding stud, the flange can additionally serve to initiate the welding current.
  • the connecting element for achieving the object mentioned has, according to the invention, a radially resilient bush which has an opening for receiving the shank of a connecting bolt, wherein contact surfaces are provided in the opening.
  • the bushing On the insertion side, the bushing may have a radially outwardly extending collar, followed by another bushing section of larger diameter, intended to engage over the flange of a connecting bolt.
  • the connecting element preferably further comprises a radially projecting from the sleeve contact lug, which engages around the radially resilient bushing in the manner of a clamp on the outside with one end.
  • the invention further comprises an electrically conductive coupling device, which consists of a connecting bolt according to the invention and a connecting element according to the invention. - A -
  • Figure 1 shows a connection bolt with protective sleeve
  • FIG. 2 shows the connection bolt according to FIG. 1
  • the connecting bolt 1 shows a connecting bolt 1, which is intended for use as a ground bolt in motor vehicles and is designed so that it can be connected to the vehicle body by means of lift-type ignition welding.
  • the connecting bolt 1 has a shaft 2 and a foot 3.
  • the foot 3 has a larger diameter than the shaft 2 and has at its end facing the shaft 2 a flange 4 with a circular outer contour.
  • the shaft 2 facing away from the end of the foot 3 is provided with an obtuse conical surface 5, the tip of which serves for the welding of the connecting bolt 1 for generating a central arc.
  • the connecting bolt 1 can be gripped on the flange 4 by means of a pair of pliers, which transfers the welding current to the connecting bolt 1.
  • the shaft 2 has a smooth cylindrical outer surface 6, which forms a contact surface for the attachment of a connection element.
  • the outer surface 6 may also be provided with a thread, if in addition a mounting option with the help of a mother should be given.
  • the free end of the shaft 2 is provided with a frustoconical chamfer 7, which facilitates the mounting of a connection element.
  • the outer surface 6 of the shaft 2 is surrounded by a protective sleeve 8 almost over its entire length.
  • the protective sleeve 8 is made of plastic and has the shape of a bellows, which consists of a plurality of frustoconical
  • Wall sections is formed. At its open ends, the protective sleeve 8 Sealing lips 9, which seal the protective sleeve 8 against the outer surface 6.
  • the protective sleeve 8 has the task of keeping the external surface 6 of the connecting bolt 1 serving as a contact surface free of color or paint when the bodywork part is coated with paint or paint with the connecting bolt 1 fastened thereto by welding. In the subsequent assembly of a connection element, the protective sleeve 8 can be compressed due to their formation in the axial direction to a fraction of their original length, so that a protected area of the outer surface 6 is exposed for the connection of a connection element.
  • FIG. 2 shows an electrically conductive coupling device 10 for forming a ground connection in a motor vehicle.
  • the coupling device 10 consists of the electrically connected to a body part 11 by welding connecting pin 1 with protective sleeve 8 and a releasably connected to the terminal pin connection element 12.
  • the connecting bolt 1 is welded to the body part 11, that the flange 4 at a distance is located from the body part 11.
  • the connecting element 12 consists of a bush 13 which is provided with a longitudinally extending slot 14 and is formed radially resilient.
  • the bushing 13 has a cylindrical opening 15 whose inner wall forms a contact surface. In the relaxed state of the bush 13, the inner diameter of the opening 15 is slightly smaller than the outer diameter of the shank 2 of the connecting bolt 1.
  • the bush 13 On the insertion side of the opening 15, the bush 13 has a frustoconical, radially outwardly extending collar 16 which, in the manner of a funnel, directs the end of the connecting bolt 1 in the direction of the opening 15 when the parts of the coupling device 10 are in contact with each other get connected.
  • a cylindrical bushing portion 17 connects, whose inner diameter is equalized to the outer diameter of the flange 4.
  • the bushing portion 17 carries radially inwardly directed locking elements 18 which slide over the flange 4 when fastening the connecting element 12 and engage behind the flange 4 on the side facing the body part 11, thereby holding the connecting element 12 on the connecting bolt 1.
  • the overcoming of the flange 4 by the locking elements 18 is facilitated by an additional slot 19 in the collar 16 and the bushing portion 17. It can also be provided several additional slots 19.
  • the connecting element 12 has a contact lug 20, which consists of a metal strip which engages around the bush 13 on the outside in the manner of a clamp.
  • the contact lug 20 may be frictionally or positively held with radial bias on the sleeve 13, it may also be connected by spot welding to the bushing 13 inextricably.
  • the protective sleeve 8 is displaced by the collar 16 in the direction of the flange 4 during the attachment of the connecting element 12 to the shaft 2 of the connecting bolt 1 and thereby compressed.
  • the collar 16 and the socket portion 17 form a cavity in which the compressed protective sleeve 8 takes place. Removing the protective sleeve 8 before mounting the connecting element 12 is therefore unnecessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Connection Of Plates (AREA)
  • Gasket Seals (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Abstract

In a connection bolt (1) having a shaft (2) and a base (3), which is arranged at one end of the shaft (2) and is intended to fix the connection bolt (1) to a component, the shaft (2) has an outer face (6) which forms a contact face for fixing a connection element. The outer face (6) of the shaft (2) is surrounded by a protective sleeve (8), which covers the contact face and is capable of moving on the shaft (2) into a position in which the contact face is freely accessible. Associated with the connection bolt (1) is a connection element (12) having a bush (13), which is flexible in a radially sprung manner and has an opening (15) for accommodating the shaft (2) of the connection bolt (1), wherein contact faces are provided in the opening. The connection element (12) and the connection bolt (1) form an electrically conductive coupling apparatus (10) with one another.

Description

ANSCHLUSSBOLZEN, ANSCHLUSSELEMENT UND ELEKTRISCH LEITENDE KUPPLUNGSVORRICHTUNG CONNECTING PIN, CONNECTING ELEMENT AND ELECTRICALLY CONDUCTIVE COUPLING DEVICE
Die Erfindung betrifft einen Anschlussbolzen, insbesondere Schweißbolzen, mit einem Schaft und einem Fuß, der an einem Ende des Schaftes angeordnet und zur Befestigung des Bolzens an einem Bauteil bestimmt ist. Die Erfindung betrifft weiterhin ein Anschlusselement und eine einen Anschlussbolzen und ein Anschlusselement umfassende elektrisch leitende Kupplungsvorrichtung.The invention relates to a connecting bolt, in particular welding stud, with a shank and a foot, which is arranged at one end of the shank and intended for fastening of the bolt to a component. The invention further relates to a connection element and an electrically conductive coupling device comprising a connection bolt and a connection element.
In Kraftfahrzeugen sind an zahlreichen Stellen sogenannte Masseanschlüsse erforderlich, die im Fahrzeug angeordnete elektrische Einrichtungen mit der Fahrzeugmasse verbinden. Die Masseanschlüsse weisen im allgemeinen einen Anschlussbolzen auf, der durch Schweißen oder andere Fügeverfahren elektrisch leitend mit der Fahrzeugkarosserie verbunden ist. Anschlussbolzen der angegebenen Art sind aus DE 36 13 397 C2 und DE 94 13 406 U1 bekannt. Die bekannten Anschlussbolzen haben einen mit einem Gewinde versehenen Schaft und eine durch einen Fuß gebildete, dem Schaft zugewandte Schulter, die eine Kontaktfläche bildet. Um zu erreichen, dass bei- spielsweise bei einem möglichen Lackiervorgang, bei dem das mit dem Anschlussbolzen versehene Bauteil, z.B. die Fahrzeugkarosserie, mit einer Lackschicht überzogen wird, die Farbe den Gewindebereich des Schweißbolzens und die Kontaktfläche nicht erreichen kann, sind die bekannten Anschlussbolzen vor der Montage mit einer Schutzkappe oder einer Hutmutter versehen, die den Schaft umgibt und dicht an der Schulter anliegt. Vor der anschließenden Montage eines Kontaktelements müssen Schutzkappe oder Hutmutter zunächst entfernt werden, was umständlich ist und einen zusätzliche Montageaufwand erfordert. Wird die Hutmutter anschließend zur Befestigung des Kontaktelements verwendet, so ist auch das Aufschrauben und Anziehen der Hutmutter zeitaufwendig. Der Erfindung liegt die Aufgabe zugrunde, einen Anschlussbolzen der eingangs angegebenen Art und ein mit ihm zusammenwirkendes Anschlusselement sowie eine daraus gebildete Kupplungsvorrichtung zu schaffen, die eine einfache und schnelle Montage ermöglichen.In motor vehicles so-called ground connections are required in numerous places, which connect the electrical equipment arranged in the vehicle with the vehicle ground. The ground connections generally have a connection bolt, which is electrically conductively connected to the vehicle body by welding or other joining methods. Connecting bolts of the specified type are known from DE 36 13 397 C2 and DE 94 13 406 U1. The known terminal bolts have a threaded shank and a shoulder-shaped shoulder formed by a foot which forms a contact surface. In order to achieve that, for example, in a possible painting process in which the component provided with the connecting bolt, for example the vehicle body, is coated with a lacquer layer, the paint can not reach the threaded region of the welding bolt and the contact surface, the known connecting bolts are available the assembly with a protective cap or a cap nut, which surrounds the shaft and fits tightly against the shoulder. Before the subsequent assembly of a contact element cap or cap nut must first be removed, which is cumbersome and requires additional installation work. If the cap nut is then used to fasten the contact element, then screwing and tightening the cap nut is time-consuming. The invention has for its object to provide a terminal bolt of the type specified and a cooperating with him connection element and a coupling device formed therefrom, which allow a simple and quick installation.
Die Aufgabe wird hinsichtlich des Anschlussbolzens durch die Merkmale des Anspruchs 1 , hinsichtlich des Anschlusselements durch die Merkmale des Anspruchs 8 und hinsichtlich der Kupplungsvorrichtung durch die Merkmale des Anspruchs 12 gelöst.The object is achieved with regard to the connecting bolt by the features of claim 1, with respect to the connecting element by the features of claim 8 and with respect to the coupling device by the features of claim 12.
Nach der Erfindung ist vorgesehen, dass der Anschlussbolzen einen Schaft mit einer Außenfläche aufweist, die eine Kontaktfläche für die Befestigung eines Anschlusselements bildet, wobei die Außenfläche des Schaftes von einer Schutzhülse umgeben ist, die die Kontaktfläche bedeckt und die auf dem Schaft in eine Stellung bewegbar ist, in der die Kontaktfläche frei zugänglich ist.According to the invention it is provided that the connecting bolt has a shaft with an outer surface which forms a contact surface for the attachment of a connection element, wherein the outer surface of the shaft is surrounded by a protective sleeve which covers the contact surface and which can be moved to a position on the shaft is, in which the contact surface is freely accessible.
Die erfindungsgemäße Gestaltung des Anschlussbolzens hat den Vorteil, dass das Entfernen einer Schutzkappe oder einer Hutmutter entbehrlich ist. Statt dessen lässt sich die Schutzhülse bei der Montage eines Anschlusselements gegenüber dem Schaft derart bewegen, dass das Kontaktelement mit den Kontaktflächen in Kontakt gebracht werden kann. Die Anordnung der Kontaktflächen auf dem Schaft hat weiterhin den Vorteil, dass das Anschlusselement durch Aufstecken auf dem Schaft montiert werden kann und dass zeitrau- bende Schraubvorgänge entfallen. Hierbei kann der Schaft des Anschlussbolzens eine glatte Außenfläche haben, er kann aber auch mit einem Gewinde versehen sein, so dass der gleiche Bolzen auch für andere Befestigungsaufgaben geeignet ist.The inventive design of the connecting bolt has the advantage that the removal of a protective cap or a cap nut is unnecessary. Instead, the protective sleeve can be moved relative to the shaft during the assembly of a connection element in such a way that the contact element can be brought into contact with the contact surfaces. The arrangement of the contact surfaces on the shaft further has the advantage that the connection element can be mounted by plugging onto the shaft and that time-consuming screwing operations are eliminated. Here, the shank of the connecting bolt may have a smooth outer surface, but it may also be provided with a thread, so that the same bolt is also suitable for other fastening tasks.
Die Schutzhülse kann erfindungsgemäß in ihrer Länge veränderbar gestaltet sein, vorzugsweise hat sie die Form eines Faltenbalges. Hierbei genügt es zum Freilegen der Kontaktflächen, wenn die Schutzhülse in axialer Richtung zusammengedrückt wird, wobei von Vorteil ist, dass die verbleibende geringe axiale Länge der Schutzhülse nur wenig Platz auf dem Schaft des Anschlussbolzens benötigt. Der Anschlussbolzen kann daher entsprechend kurz ausgeführt sein.The protective sleeve according to the invention can be made variable in length, preferably it has the shape of a bellows. It is sufficient to expose the contact surfaces when the protective sleeve in the axial direction is compressed, it being advantageous that the remaining small axial length of the protective sleeve requires only little space on the shaft of the connecting bolt. The connecting bolt can therefore be made correspondingly short.
Um die von der Schutzhülse bedeckten Kontaktflächen wirksam gegen das Eindringen von Farbe und Lack schützen zu können, sind erfindungsgemäß an den Enden der Schutzhülse an dem Schaft anliegende Dichtlippen vorgesehen.In order to protect the covered by the protective sleeve contact surfaces effectively against the ingress of paint and varnish, according to the invention at the ends of the protective sleeve on the shaft fitting sealing lips are provided.
An dem Fuß des Anschlussbolzens kann nach einem weiteren Vorschlag der Erfindung ein Flansch ausgebildet sein, der einen größeren Durchmesser als der Fuß hat und der in einem axialen Abstand von dem Befestigungsende des Fußes angeordnet ist. Mit Hilfe dieses Flansches kann ein auf dem Anschlussbolzen angeordnetes Anschlusselement in axialer Richtung fixiert werden. Handelt es sich bei dem Anschlussbolzen um einen Schweißbolzen, so kann der Flansch zusätzlich zur Einleitung des Schweißstromes dienen.At the foot of the connecting bolt according to a further proposal of the invention may be formed a flange which has a larger diameter than the foot and which is arranged at an axial distance from the attachment end of the foot. With the aid of this flange, a connection element arranged on the connecting bolt can be fixed in the axial direction. If the connecting bolt is a welding stud, the flange can additionally serve to initiate the welding current.
Das Anschlusselement zur Lösung der genannten Aufgabe weist erfindungsgemäß eine radial federnd nachgiebige Buchse auf, die eine Öffnung zur Aufnahme des Schaftes eines Anschlussbolzens hat, wobei in der Öffnung Kontaktflächen vorgesehen sind. Auf der Einsteckseite kann die Buchse einen sich radial nach außen erstreckenden Kragen haben, an den sich ein weiterer Buchsenabschnitt größeren Durchmessers anschließt, der dazu bestimmt ist, den Flansch eines Anschlussbolzens zu übergreifen. Das Anschlusselement weist vorzugsweise weiterhin eine radial von der Buchse abstehende Kontaktfahne auf, welche mit einem Ende die radial federnd nachgiebige Buchse nach Art einer Schelle auf der Außenseite umgreift.The connecting element for achieving the object mentioned has, according to the invention, a radially resilient bush which has an opening for receiving the shank of a connecting bolt, wherein contact surfaces are provided in the opening. On the insertion side, the bushing may have a radially outwardly extending collar, followed by another bushing section of larger diameter, intended to engage over the flange of a connecting bolt. The connecting element preferably further comprises a radially projecting from the sleeve contact lug, which engages around the radially resilient bushing in the manner of a clamp on the outside with one end.
Die Erfindung umfasst weiterhin eine elektrisch leitende Kupplungsvorrichtung, welche aus einem erfindungsgemäßen Anschlussbolzen und einem erfindungsgemäßen Anschlusselement besteht. - A -The invention further comprises an electrically conductive coupling device, which consists of a connecting bolt according to the invention and a connecting element according to the invention. - A -
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels näher erläutert, das in der Zeichnung dargestellt ist. Es zeigenThe invention will be explained in more detail with reference to an embodiment which is shown in the drawing. Show it
Figur 1 einen Anschlussbolzen mit Schutzhülse undFigure 1 shows a connection bolt with protective sleeve and
Figur 2 eine den Anschlussbolzen gemäß Figur 1 beinhaltendeFIG. 2 shows the connection bolt according to FIG. 1
Kupplungsvorrichtung.Coupling device.
In Figur 1 ist ein Anschlussbolzen 1 dargestellt, der zur Verwendung als Massebolzen in Kraftfahrzeugen bestimmt und so ausgebildet ist, dass er mittels Hubzündungsschweißen mit der Fahrzeugkarosserie verbunden werden kann. Der Anschlussbolzen 1 hat einen Schaft 2 und einen Fuß 3. Der Fuß 3 hat einen größeren Durchmesser als der Schaft 2 und weist an seinem dem Schaft 2 zugekehrten Ende einen Flansch 4 mit kreisrunder Außenkontur auf. Das dem Schaft 2 abgekehrte Ende des Fußes 3 ist mit einer stumpfwinkligen Kegelfläche 5 versehen, deren Spitze beim Anschweißen des Anschlussbolzens 1 zur Erzeugung eines zentralen Lichtbogens dient. Beim Schweißen kann der Anschlussbolzen 1 an dem Flansch 4 mit Hilfe einer Zange gegriffen werden, die den Schweißstrom auf den Anschlussbolzen 1 überträgt. Der Schaft 2 hat eine glatte zylindrische Außenfläche 6, die eine Kontaktfläche für die Befestigung eines Anschlusselements bildet. Anstelle der glatten Ausführung kann die Außenfläche 6 auch mit einem Gewinde versehen sein, wenn zusätzlich eine Befestigungsmöglichkeit mit Hilfe einer Mutter gegeben sein soll. Das freie Ende des Schaftes 2 ist mit einer kegel- stumpfförmigen Fase 7 versehen, die das Montieren eines Anschlusselements erleichtert.1 shows a connecting bolt 1, which is intended for use as a ground bolt in motor vehicles and is designed so that it can be connected to the vehicle body by means of lift-type ignition welding. The connecting bolt 1 has a shaft 2 and a foot 3. The foot 3 has a larger diameter than the shaft 2 and has at its end facing the shaft 2 a flange 4 with a circular outer contour. The shaft 2 facing away from the end of the foot 3 is provided with an obtuse conical surface 5, the tip of which serves for the welding of the connecting bolt 1 for generating a central arc. During welding, the connecting bolt 1 can be gripped on the flange 4 by means of a pair of pliers, which transfers the welding current to the connecting bolt 1. The shaft 2 has a smooth cylindrical outer surface 6, which forms a contact surface for the attachment of a connection element. Instead of the smooth design, the outer surface 6 may also be provided with a thread, if in addition a mounting option with the help of a mother should be given. The free end of the shaft 2 is provided with a frustoconical chamfer 7, which facilitates the mounting of a connection element.
Die Außenfläche 6 des Schaftes 2 ist nahezu auf ihrer gesamten Länge von einer Schutzhülse 8 umgeben. Die Schutzhülse 8 besteht aus Kunststoff und hat die Form eines Faltenbalges, der aus einer Mehrzahl kegelstumpfförmigerThe outer surface 6 of the shaft 2 is surrounded by a protective sleeve 8 almost over its entire length. The protective sleeve 8 is made of plastic and has the shape of a bellows, which consists of a plurality of frustoconical
Wandabschnitte gebildet ist. An ihren offenen Enden weist die Schutzhülse 8 Dichtlippen 9 auf, die die Schutzhülse 8 gegenüber der Außenfläche 6 abdichten.Wall sections is formed. At its open ends, the protective sleeve 8 Sealing lips 9, which seal the protective sleeve 8 against the outer surface 6.
Die Schutzhülse 8 hat die Aufgabe, die als Kontaktfläche dienende Außenflä- che 6 des Anschlussbolzens 1 färb- bzw. lackfrei zu halten, wenn das Karosserieteil mit dem durch Schweißen daran befestigten Anschlussbolzen 1 mit Farbe bzw. Lack überzogen wird. Bei der späteren Montage eines Anschlusselements kann die Schutzhülse 8 aufgrund ihrer Ausbildung in axialer Richtung auf einen Bruchteil ihrer ursprünglichen Länge zusammengedrückt werden, so dass ein geschützter Bereich der Außenfläche 6 für den Anschluss eines Anschlusselements freiliegt.The protective sleeve 8 has the task of keeping the external surface 6 of the connecting bolt 1 serving as a contact surface free of color or paint when the bodywork part is coated with paint or paint with the connecting bolt 1 fastened thereto by welding. In the subsequent assembly of a connection element, the protective sleeve 8 can be compressed due to their formation in the axial direction to a fraction of their original length, so that a protected area of the outer surface 6 is exposed for the connection of a connection element.
Figur 2 zeigt eine elektrisch leitende Kupplungsvorrichtung 10 zur Bildung eines Masseanschlusses in einem Kraftfahrzeug. Die Kupplungsvorrichtung 10 besteht aus dem mit einem Karosserieteil 11 durch Schweißen elektrisch leitend verbundenen Anschlussbolzen 1 mit Schutzhülse 8 und einem mit dem Anschlussbolzen 1 lösbar verbundenen Anschlusselement 12. Der Anschlussbolzen 1 ist so mit dem Karosserieteil 11 verschweißt, dass sich der Flansch 4 in einem Abstand von dem Karosserieteil 11 befindet.FIG. 2 shows an electrically conductive coupling device 10 for forming a ground connection in a motor vehicle. The coupling device 10 consists of the electrically connected to a body part 11 by welding connecting pin 1 with protective sleeve 8 and a releasably connected to the terminal pin connection element 12. The connecting bolt 1 is welded to the body part 11, that the flange 4 at a distance is located from the body part 11.
Das Anschlusselement 12 besteht aus einer Buchse 13, die mit einem sich in Längsrichtung erstreckenden Schlitz 14 versehen und radial federnd ausgebildet ist. Die Buchse 13 hat eine zylindrische Öffnung 15, deren Innenwand eine Kontaktfläche bildet. In entspanntem Zustand der Buchse 13 ist der Innen- durchmesser der Öffnung 15 geringfügig kleiner als der Außendurchmesser des Schaftes 2 des Anschlussbolzens 1. Durch Aufstecken auf den Schaft 2 wird die Buchse 13 federnd auf den Schaftdurchmesser aufgeweitet, so dass sie mit einer der Aufweitung entgegenwirkenden Federkraft an dem Schaft 2 anliegt. Auf der Einsteckseite der Öffnung 15 weist die Buchse 13 einen kegel- stumpfförmigen, sich radial nach außen erstreckenden Kragen 16 auf, der nach Art eines Trichters das Ende des Anschlussbolzens 1 in Richtung der Öffnung 15 lenkt, wenn die Teile der Kupplungsvorrichtung 10 miteinander verbunden werden. An den äußeren Rand des Kragens 16 schließt sich ein zylindrischer Buchsenabschnitt 17 an, dessen Innendurchmesser an den Außendurchmesser des Flansches 4 angeglichen ist. An seinem freien Ende trägt der Buchsenabschnitt 17 radial nach innen gerichtete Rastelemente 18, die beim Befestigen des Anschlusselements 12 über den Flansch 4 hinweggleiten und den Flansch 4 auf der dem Karosserieteil 11 zugekehrten Seite hintergreifen, um dadurch das Anschlusselement 12 auf dem Anschlussbolzen 1 festzuhalten. Das Überwinden des Flansches 4 durch die Rastelemente 18 wird durch einen zusätzlichen Schlitz 19 in dem Kragen 16 und dem Buchsen- abschnitt 17 erleichtert. Es können auch mehrere zusätzlich Schlitze 19 vorgesehen sein.The connecting element 12 consists of a bush 13 which is provided with a longitudinally extending slot 14 and is formed radially resilient. The bushing 13 has a cylindrical opening 15 whose inner wall forms a contact surface. In the relaxed state of the bush 13, the inner diameter of the opening 15 is slightly smaller than the outer diameter of the shank 2 of the connecting bolt 1. By attaching to the shaft 2, the bushing 13 is resiliently expanded to the shaft diameter, so that they counteract with a widening Spring force on the shaft 2 is applied. On the insertion side of the opening 15, the bush 13 has a frustoconical, radially outwardly extending collar 16 which, in the manner of a funnel, directs the end of the connecting bolt 1 in the direction of the opening 15 when the parts of the coupling device 10 are in contact with each other get connected. At the outer edge of the collar 16, a cylindrical bushing portion 17 connects, whose inner diameter is equalized to the outer diameter of the flange 4. At its free end, the bushing portion 17 carries radially inwardly directed locking elements 18 which slide over the flange 4 when fastening the connecting element 12 and engage behind the flange 4 on the side facing the body part 11, thereby holding the connecting element 12 on the connecting bolt 1. The overcoming of the flange 4 by the locking elements 18 is facilitated by an additional slot 19 in the collar 16 and the bushing portion 17. It can also be provided several additional slots 19.
Zum Anschluss eines Kabels weist das Anschlusselement 12 eine Kontaktfahne 20 auf, die aus einem Blechstreifen besteht, der die Buchse 13 auf der Außenseite nach Art einer Schelle umgreift. Die Kontaktfahne 20 kann mit radialer Vorspannung reib- oder formschlüssig auf der Buchse 13 gehalten sein, sie kann auch durch Punktschweißen mit der Buchse 13 unlösbar verbunden sein.To connect a cable, the connecting element 12 has a contact lug 20, which consists of a metal strip which engages around the bush 13 on the outside in the manner of a clamp. The contact lug 20 may be frictionally or positively held with radial bias on the sleeve 13, it may also be connected by spot welding to the bushing 13 inextricably.
Wie in Figur 2 gezeigt, wird bei dem Aufstecken des Anschlusselements 12 auf den Schaft 2 des Anschlussbolzens 1 die Schutzhülse 8 durch den Kragen 16 in Richtung des Flansches 4 verschoben und dabei zusammengedrückt. In der Endstellung des Anschlusselements 12 bilden der Kragen 16 und der Buchsenabschnitt 17 einen Hohlraum, in dem die zusammengedrückte Schutzhülse 8 Platz findet. Ein Entfernen der Schutzhülse 8 vor der Montage des Anschlusselements 12 ist daher entbehrlich. As shown in Figure 2, the protective sleeve 8 is displaced by the collar 16 in the direction of the flange 4 during the attachment of the connecting element 12 to the shaft 2 of the connecting bolt 1 and thereby compressed. In the end position of the connecting element 12, the collar 16 and the socket portion 17 form a cavity in which the compressed protective sleeve 8 takes place. Removing the protective sleeve 8 before mounting the connecting element 12 is therefore unnecessary.

Claims

ANSPRÜCHE
1. Anschlussbolzen (1 ), insbesondere Schweißbolzen, mit einem Schaft (2) und einem Fuß (3), der an einem Ende des Schaftes (2) angeordnet und zur Befestigung des Anschlussbolzens (1 ) an einem Bauteil bestimmt ist, wobei der Schaft (2) eine Außenfläche (6) aufweist, die eine Kontaktfläche für die Befestigung eines Anschlusselements bildet und wobei die Außenfläche (6) des Schaftes (2) von einer Schutzhülse (8) umgeben ist, welche die Kontaktfläche bedeckt und auf dem Schaft (2) in eine Stellung bewegbar ist, in der die Kontaktfläche frei zugänglich ist.A connecting bolt (1), in particular a welding bolt, having a shaft (2) and a foot (3) which is arranged at one end of the shaft (2) and intended for fastening the connecting bolt (1) to a component, wherein the shaft (2) has an outer surface (6) which forms a contact surface for the attachment of a connection element and wherein the outer surface (6) of the shaft (2) is surrounded by a protective sleeve (8) covering the contact surface and resting on the shaft (2 ) is movable in a position in which the contact surface is freely accessible.
2. Anschlussbolzen nach Anspruch 1 , dadurch gekennzeichnet, dass die Außenfläche (6) zylindrisch und glatt ist.2. Connecting bolt according to claim 1, characterized in that the outer surface (6) is cylindrical and smooth.
3. Anschlussbolzen nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass Außenfläche (6) ein Gewinde aufweist.3. Connecting bolt according to one of claims 1 or 2, characterized in that the outer surface (6) has a thread.
4. Anschlussbolzen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schutzhülse (8) in ihrer Länge veränderbar ist.4. connecting bolt according to one of the preceding claims, characterized in that the protective sleeve (8) is variable in length.
5. Anschlussbolzen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schutzhülse (8) die Form eines Faltenbalges hat.5. connecting bolt according to one of the preceding claims, characterized in that the protective sleeve (8) has the shape of a bellows.
6. Anschlussbolzen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an den Enden der Schutzhülse (8) an dem Schaft anliegende Dichtlippen (9) vorgesehen sind.6. connecting bolt according to one of the preceding claims, characterized in that at the ends of the protective sleeve (8) on the shaft abutting sealing lips (9) are provided.
7. Anschlussbolzen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an dem Fuß (3) ein Flansch (4) ausgebildet ist, der einen größeren Durchmesser hat als der Fuß (3) und der in einem axialen Abstand von dem Befestigungsende des Fußes (3) angeordnet ist.7. Connecting bolt according to one of the preceding claims, characterized in that on the foot (3) has a flange (4) is formed, which has a larger diameter than the foot (3) and which is arranged at an axial distance from the attachment end of the foot (3).
8. Anschlusselement (12) für einen Anschlussbolzen (1 ) nach einem der vorhergehenden Ansprüche mit einer radial federnd nachgiebigen Buchse (13), die eine Öffnung (15) zur Aufnahme des Schaftes (2) des Anschlussbolzens (1) hat, wobei in der Öffnung Kontaktflächen vorgesehen sind.8. Connection element (12) for a connecting bolt (1) according to one of the preceding claims with a radially resilient bush (13) having an opening (15) for receiving the shank (2) of the connecting bolt (1), wherein in the Opening contact surfaces are provided.
9. Anschlusselement nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Buchse (13) auf der Einsteckseite einen sich radial nach außen erstreckenden Kragen (16) hat, an den sich ein Buchsenabschnitt (17) größeren Durchmessers anschließt, der dazu bestimmt ist, den Flansch (4) eines Anschlussbolzens (1 ) zu übergreifen.9. Connecting element according to the preceding claim, characterized in that the bushing (13) on the insertion side has a radially outwardly extending collar (16), which is followed by a bushing portion (17) of larger diameter, which is intended to Flange (4) of a connecting bolt (1) overlap.
10. Anschlusselement nach einem der Ansprüche 8 oder 9, gekennzeichnet durch eine radial von der Buchse (13) abstehende Kontaktfahne (20), welche die Buchse (13) nach Art einer Schelle auf der Außenseite umgreift.10. Connecting element according to one of claims 8 or 9, characterized by a radially of the bushing (13) projecting contact lug (20) which surrounds the socket (13) in the manner of a clamp on the outside.
11. Anschlusselement nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, dass der Buchsenabschnitt (17) an seinem freien Ende radial nach innen gerichtete Rastelemente (18) aufweist.11. Connecting element according to one of claims 8 to 10, characterized in that the bushing portion (17) at its free end radially inwardly directed locking elements (18).
12. Elektrisch leitende Kupplungsvorrichtung (10), bestehend aus einem Anschlussbolzen (1 ) nach einem der Ansprüche 1 bis 7 und einem Anschlusselement (12) nach einem der Ansprüche 8 bis 11. 12. An electrically conductive coupling device (10), comprising a connecting bolt (1) according to one of claims 1 to 7 and a connecting element (12) according to one of claims 8 to 11.
EP06807636A 2005-11-01 2006-10-27 Connection bolt, connection element and electrically conductive coupling apparatus Withdrawn EP1943703A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005052309A DE102005052309B4 (en) 2005-11-01 2005-11-01 Connecting bolt, connecting element and electrically conductive coupling device
PCT/EP2006/067902 WO2007051771A1 (en) 2005-11-01 2006-10-27 Connection bolt, connection element and electrically conductive coupling apparatus

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EP1943703A1 true EP1943703A1 (en) 2008-07-16

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US (1) US7717741B2 (en)
EP (1) EP1943703A1 (en)
JP (1) JP2009513916A (en)
DE (1) DE102005052309B4 (en)
WO (1) WO2007051771A1 (en)

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Also Published As

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US7717741B2 (en) 2010-05-18
DE102005052309A1 (en) 2007-05-03
WO2007051771A1 (en) 2007-05-10
DE102005052309B4 (en) 2013-11-21
JP2009513916A (en) 2009-04-02
US20080214047A1 (en) 2008-09-04

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