EP3613104A1 - Earthing contact - Google Patents

Earthing contact

Info

Publication number
EP3613104A1
EP3613104A1 EP18716638.4A EP18716638A EP3613104A1 EP 3613104 A1 EP3613104 A1 EP 3613104A1 EP 18716638 A EP18716638 A EP 18716638A EP 3613104 A1 EP3613104 A1 EP 3613104A1
Authority
EP
European Patent Office
Prior art keywords
contact
grounding
component
contact plate
passage
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.)
Granted
Application number
EP18716638.4A
Other languages
German (de)
French (fr)
Other versions
EP3613104B1 (en
EP3613104C0 (en
Inventor
Thomas Foser
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP3613104A1 publication Critical patent/EP3613104A1/en
Application granted granted Critical
Publication of EP3613104B1 publication Critical patent/EP3613104B1/en
Publication of EP3613104C0 publication Critical patent/EP3613104C0/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • H01R13/6315—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only allowing relative movement between coupling parts, e.g. floating connection
    • 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
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • H01R4/646—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for cables or flexible cylindrical bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12—End pieces terminating in an eye, hook, or fork
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member

Definitions

  • the invention relates to a ground contact for making electrical contact with a grounding cable having a component having an electrically conductive component surface.
  • Earthing contacts which have a first contact surface for a support on the component surface, a second contact surface for a connection of a grounding cable and a passage for a fastening element, by means of which the grounding contacts are fastened to the component.
  • a surface contact of the first contact surface on the component surface is to be ensured. The requirements for the accuracy of the attachment are therefore particularly high.
  • a grounding contact for making electrical contact with a grounding cable having a component having an electrically conductive component surface, with an electrically conductive contact plate and a fastening element
  • the contact plate has a first contact surface for a surface contact of the contact plate on the component surface, a second contact surface for a plant of a grounding cable to the contact plate and a passage for the fastening element
  • the fastening element has a fastening portion for fastening the fastening element in the component, a pressure element for pressing the contact plate to the component surface and a holding portion for an arrangement in the passage of the contact plate when the pressure element presses the contact plate against the component surface, wherein the first contact surface with respect to the attachment portion by a tilt angle of at least 6 ° is tiltable when the holding portion is disposed in the passage.
  • the first contact surface with respect to the attachment portion by a tilt angle of at least 10 °, more preferably at least 20 °, tiltable.
  • a surface contact of the first contact surface on the component surface is ensured even if the fastening element is fastened at an angle of up to 5 ° or up to 10 ° obliquely to a surface normal of the component surface on the component.
  • the holding portion is rigidly connected to the attachment portion.
  • the first contact surface is rigidly connected to the passage.
  • the passage is formed as a circular cylindrical bore having a bore diameter and a bore length
  • the holding portion is formed as a circular cylindrical shaft portion with a shank diameter.
  • the ratio of the difference between the bore diameter and the shaft diameter on the one hand and the bore length on the other hand at least 0.05, preferably at least 0.1, more preferably at least 0.2. This ensures that the first contact surface with respect to the attachment portion is sufficiently tilted.
  • the pressure element is rigidly connected to the holding portion.
  • the pressure element is designed as a stop shoulder on the holding portion. This simplifies the design of the ground contact.
  • the ground contact on a sealing disc which is arranged between the pressure element and the contact plate.
  • the fastening element has a fixing section for fixing the grounding cable to the second contact surface.
  • the attachment portion is formed as a bolt portion for driving into a borehole of the component.
  • the bolt portion has a particular self-tapping thread for screwing into the borehole.
  • Fig. 1 a ground contact.
  • the grounding contact 1 shows a grounding contact 1 for making electrical contact with a grounding cable 2 with a component 3 having an electrically conductive component surface 4.
  • the grounding contact 1 comprises an electrically conductive contact plate 5 with a first contact surface 6 for a flat support of the contact plate 5 on the component surface 4 and a second contact surface 7 for a contact of the grounding cable 2 to the contact plate 5.
  • the grounding cable 2 has a cable lug 8 for this purpose
  • the grounding contact 1 further comprises a fastening element 9 with a fastening portion 10 for fastening the fastening element 9 in the component 3, designed as a stop shoulder pressure element 1 1, which presses the contact plate 5 to the component surface 4, and a holding portion 12, which in one passage 13 of the contact plate 5 is arranged.
  • the grounding cable 2 has a conductor cross section of 50 mm 2 or more, for example, 95 mm 2 .
  • the first contact surface 6 has an area of 250 mm 2 or more, for example 400 mm 2 .
  • the first contact surface 6 and / or the second contact surface 7 are galvanized, for example hot-dip galvanized.
  • the attachment portion 10 is formed as a bolt portion for driving into a borehole 17 of the component 3.
  • the attachment portion 10 has a self-tapping thread 18 for screwing into the borehole 17.
  • the attachment portion is formed as a blunt setting bolt without a threaded portion for a linear driving into the wellbore or has a screw tip or a nail tip for a direct driving into the component without a borehole.
  • the fastening element 9 furthermore has a fixing section 14 for fixing the grounding cable 2 to the second contact surface 7.
  • the fixing portion 14 is for this purpose provided with an external thread 15, onto which a nut 16 is screwed, which presses the cable lug 8 of the grounding cable 2 against the second contact surface 7.
  • the grounding contact 1 further comprises a sealing washer, which is arranged between the pressure element 1 1 and the contact plate 5.
  • the sealing washer comprises an inner sealing ring 19 made of an elastic material and a cover 20 made of a rigid material, for example a metal or an alloy such as steel.
  • the inner sealing ring 19, the cover 20, the sealing washer and / or the pressure element 1 1 are received in a recess 21 provided for the contact plate 5.
  • the grounding contact 1 also has an outer sealing ring 22, which is arranged between the contact plate 5 and the component 3 such that the first contact surface 6 is sealed from the environment. The electrical contact between the first contact surface 6 and the component surface 4 is thus protected on the one hand by the inner sealing ring 19 and on the other hand by the outer sealing ring 22 against a possibly corrosive effect of the environment.
  • the fastening element 9 is made in one piece from a metal or an alloy such as steel, so that the fixing portion 14, the pressure element 1 1, the holding portion 12 and the attachment portion 10 are rigidly connected together.
  • the contact plate 5 is made in one piece from a metal such as copper or an alloy such as steel, so that the first contact surface 6, the second contact surface 7 and the passage 13 are rigidly connected to each other.
  • the passage 13 is a circular cylindrical bore with a bore diameter of 6.0 mm and a bore length of 2.0 mm, which is the thickness of the contact plate 5 in the region of Passage 13 equals, trained.
  • the holding portion 12 is formed as a circular cylindrical shaft portion with a shaft diameter of 5.6 mm.
  • the ratio of the difference between the bore diameter and the shank diameter, namely 0.4 mm, and the bore length, namely 2.0 mm, is 0.2.

Landscapes

  • Installation Of Indoor Wiring (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Piles And Underground Anchors (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

The invention relates to an earthing contact for creating an electrical contact between an earthing cable and a component comprising an electroconductive component surface, with an electroconductive contact plate and a fixing element, the contact plate having a first contact surface for placing the contact plate on the component surface in a flat manner, a second contact surface for placing an earthing cable on the contact plate, and a passage for the fixing element, the fixing element comprising a fixing section for fixing the fixing element in the component, a pressure element for pressing the contact plate onto the component surface and a holding section for arranging in the passage of the contact plate, when the pressure element presses the contact plate onto the component surface, the first contact surface being tiltable in relation to the fixing section by a tilting angle of at least 6° when the holding section is arranged in the passage.

Description

Erdungskontakt  ground contact
Die Erfindung betrifft einen Erdungskontakt zur elektrischen Kontaktierung eines Erdungskabels mit einem eine elektrisch leitende Bauteiloberfläche aufweisenden Bauteil. The invention relates to a ground contact for making electrical contact with a grounding cable having a component having an electrically conductive component surface.
Es sind Erdungskontakte bekannt, die eine erste Kontaktfläche für eine Auflage auf der Bauteiloberfläche, eine zweite Kontaktfläche für einen Anschluss eines Erdungskabels und einen Durchgang für ein Befestigungselement aufweisen, mittels dessen die Erdungskontakte an dem Bauteil befestigt sind. Für den gewünschten elektrischen Kontakt ist eine flächige Auflage der ersten Kontaktfläche auf der Bauteiloberfläche zu gewährleisten. Die Anforderungen an die Genauigkeit bei der Befestigung sind daher besonders hoch. Earthing contacts are known, which have a first contact surface for a support on the component surface, a second contact surface for a connection of a grounding cable and a passage for a fastening element, by means of which the grounding contacts are fastened to the component. For the desired electrical contact, a surface contact of the first contact surface on the component surface is to be ensured. The requirements for the accuracy of the attachment are therefore particularly high.
Es ist eine Aufgabe der Erfindung, eine flächige Auflage der ersten Kontaktfläche auf der Bauteiloberfläche auch bei wenig genauer Befestigung zu gewährleisten. It is an object of the invention to ensure a flat support of the first contact surface on the component surface even with less accurate attachment.
Die Aufgabe ist gelöst bei einem Erdungskontakt zur elektrischen Kontaktierung eines Erdungskabels mit einem eine elektrisch leitende Bauteiloberfläche aufweisenden Bauteil, mit einer elektrisch leitenden Kontaktplatte und einem Befestigungselement, wobei die Kontaktplatte eine erste Kontaktfläche für eine flächige Auflage der Kontaktplatte auf der Bauteiloberfläche, eine zweite Kontaktfläche für eine Anlage eines Erdungskabels an der Kontaktplatte und einen Durchgang für das Befestigungselement aufweist, wobei das Befestigungselement einen Befestigungsabschnitt für eine Befestigung des Befestigungselements in dem Bauteil, ein Andruckelement für ein Andrücken der Kontaktplatte an die Bauteiloberfläche und einen Halteabschnitt für eine Anordnung in dem Durchgang der Kontaktplatte, wenn das Andruckelement die Kontaktplatte an die Bauteiloberfläche andrückt, aufweist, wobei die erste Kontaktfläche gegenüber dem Befestigungsabschnitt um einen Kippwinkel von mindestens 6° verkippbar ist, wenn der Halteabschnitt in dem Durchgang angeordnet ist. Dadurch ist eine flächige Auflage der ersten Kontaktfläche auf der Bauteiloberfläche auch dann gewährleistet, wenn das Befestigungselement mit einem Winkel von bis zu 3° schräg zu einer Flächennormalen der Bauteiloberfläche an dem Bauteil befestigt wird. Bevorzugt ist die erste Kontaktfläche gegenüber dem Befestigungsabschnitt um einen Kippwinkel von mindestens 10°, besonders bevorzugt von mindestens 20°, verkippbar. Dadurch ist eine flächige Auflage der ersten Kontaktfläche auf der Bauteiloberfläche auch dann gewährleistet, wenn das Befestigungselement mit einem Winkel von bis zu 5° beziehungsweise bis zu 10° schräg zu einer Flächennormalen der Bauteiloberfläche an dem Bauteil befestigt wird. The object is achieved with a grounding contact for making electrical contact with a grounding cable having a component having an electrically conductive component surface, with an electrically conductive contact plate and a fastening element, wherein the contact plate has a first contact surface for a surface contact of the contact plate on the component surface, a second contact surface for a plant of a grounding cable to the contact plate and a passage for the fastening element, wherein the fastening element has a fastening portion for fastening the fastening element in the component, a pressure element for pressing the contact plate to the component surface and a holding portion for an arrangement in the passage of the contact plate when the pressure element presses the contact plate against the component surface, wherein the first contact surface with respect to the attachment portion by a tilt angle of at least 6 ° is tiltable when the holding portion is disposed in the passage. This is a flat edition of also ensures the first contact surface on the component surface when the fastener is attached to the component at an angle of up to 3 ° obliquely to a surface normal of the component surface. Preferably, the first contact surface with respect to the attachment portion by a tilt angle of at least 10 °, more preferably at least 20 °, tiltable. As a result, a surface contact of the first contact surface on the component surface is ensured even if the fastening element is fastened at an angle of up to 5 ° or up to 10 ° obliquely to a surface normal of the component surface on the component.
Gemäß einer vorteilhaften Ausführungsform ist der Halteabschnitt starr mit dem Befestigungsabschnitt verbunden. Gemäß einer ebenfalls vorteilhaften Ausführungsform ist die erste Kontaktfläche starr mit dem Durchgang verbunden. According to an advantageous embodiment, the holding portion is rigidly connected to the attachment portion. According to a likewise advantageous embodiment, the first contact surface is rigidly connected to the passage.
Gemäß einer vorteilhaften Ausführungsform ist der Durchgang als kreiszylindrische Bohrung mit einem Bohrungsdurchmesser und einer Bohrungslänge ausgebildet, wobei der Halteabschnitt als kreiszylindrischer Schaftabschnitt mit einem Schaftdurchmesser ausgebildet ist. Vorteilhaft beträgt das Verhältnis aus der Differenz des Bohrungsdurchmessers und des Schaftdurchmessers einerseits und der Bohrungslänge andererseits mindestens 0,05, bevorzugt mindestens 0,1 , besonders bevorzugt mindestens 0,2. Dadurch ist sichergestellt, dass die erste Kontaktfläche gegenüber dem Befestigungsabschnitt ausreichend verkippbar ist. According to an advantageous embodiment, the passage is formed as a circular cylindrical bore having a bore diameter and a bore length, wherein the holding portion is formed as a circular cylindrical shaft portion with a shank diameter. Advantageously, the ratio of the difference between the bore diameter and the shaft diameter on the one hand and the bore length on the other hand, at least 0.05, preferably at least 0.1, more preferably at least 0.2. This ensures that the first contact surface with respect to the attachment portion is sufficiently tilted.
Gemäß einer vorteilhaften Ausführungsform ist das Andruckelement starr mit dem Halteabschnitt verbunden. Bevorzugt ist das Andruckelement als Anschlagschulter an dem Halteabschnitt ausgebildet. Dies vereinfacht die Bauweise des Erdungskontakts. According to an advantageous embodiment, the pressure element is rigidly connected to the holding portion. Preferably, the pressure element is designed as a stop shoulder on the holding portion. This simplifies the design of the ground contact.
Gemäß einer vorteilhaften Ausführungsform weist der Erdungskontakt eine Dichtscheibe auf, welche zwischen dem Andruckelement und der Kontaktplatte angeordnet ist. Dadurch ist eine Abdichtung des Befestigungsabschnitts des Befestigungselements gegenüber einer unter Umständen korrosiven Umgebung sichergestellt. According to an advantageous embodiment, the ground contact on a sealing disc, which is arranged between the pressure element and the contact plate. As a result, a seal of the fastening portion of the fastener is ensured against a possibly corrosive environment.
Gemäß einer vorteilhaften Ausführungsform weist das Befestigungselement einen Fixierungsabschnitt für eine Fixierung des Erdungskabels an der zweiten Kontaktfläche auf. Bevorzugt ist der Befestigungsabschnitt als Bolzenabschnitt für ein Eintreiben in ein Bohrloch des Bauteils ausgebildet. Besonders bevorzugt weist der Bolzenabschnitt ein insbesondere selbstformendes Gewinde für ein Einschrauben in das Bohrloch auf. Ausführungsbeispiele der Erfindung werden nun nachfolgend anhand der Zeichnung beschrieben. Diese soll die Ausführungsbeispiele nicht notwendigerweise maßstäblich darstellen, vielmehr ist die Zeichnung, wo zur Erläuterung dienlich, in schematischer und/oder leicht verzerrter Form ausgeführt. Im Hinblick auf Ergänzungen der aus der Zeichnung unmittelbar erkennbaren Lehren wird auf den einschlägigen Stand der Technik verwiesen. Dabei ist zu berücksichtigen, dass vielfältige Modifikationen und Änderungen betreffend die Form und das Detail einer Ausführungsform vorgenommen werden können, ohne von der allgemeinen Idee der Erfindung abzuweichen. Die in der Beschreibung, in der Zeichnung sowie in den Ansprüchen offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebiger Kombination für die Weiterbildung der Erfindung wesentlich sein. Zudem fallen in den Rahmen der Erfindung alle Kombinationen aus zumindest zwei der in der Beschreibung, der Zeichnung und/oder den Ansprüchen offenbarten Merkmale. Die allgemeine Idee der Erfindung ist nicht beschränkt auf die exakte Form oder das Detail der im Folgenden gezeigten und beschriebenen bevorzugten Ausführungsformen. Bei angegebenen Bemessungsbereichen sollen auch innerhalb der genannten Grenzen liegende Werte als Grenzwerte offenbart und beliebig einsetzbar und beanspruchbar sein. Der Einfachheit halber sind nachfolgend für identische oder ähnliche Teile oder Teile mit identischer oder ähnlicher Funktion gleiche Bezugszeichen verwendet. According to an advantageous embodiment, the fastening element has a fixing section for fixing the grounding cable to the second contact surface. Preferably, the attachment portion is formed as a bolt portion for driving into a borehole of the component. Particularly preferably, the bolt portion has a particular self-tapping thread for screwing into the borehole. Embodiments of the invention will now be described below with reference to the drawing. This is not necessarily to scale the embodiments, but the drawing, where appropriate for explanation, executed in a schematic and / or slightly distorted form. With regard to additions to the teachings directly recognizable from the drawing reference is made to the relevant prior art. It should be noted that various modifications and changes may be made in the form and detail of an embodiment without departing from the general idea of the invention. The disclosed in the description, in the drawing and in the claims features of the invention may be essential both individually and in any combination for the development of the invention. In addition, all combinations of at least two of the features disclosed in the description, the drawings and / or the claims fall within the scope of the invention. The general idea of the invention is not limited to the exact form or detail of the preferred embodiments shown and described below. For the given design ranges, values within the stated limits should also be disclosed as limit values and be arbitrarily usable and claimable. For simplicity, the same reference numerals are used below for identical or similar parts or parts with identical or similar function.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung der bevorzugten Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt in: Further advantages, features and details of the invention will become apparent from the following description of the preferred embodiments and from the drawing; this shows in:
Fig. 1 einen Erdungskontakt. Fig. 1 a ground contact.
In Fig. 1 ist ein Erdungskontakt 1 zur elektrischen Kontaktierung eines Erdungskabels 2 mit einem eine elektrisch leitende Bauteiloberfläche 4 aufweisenden Bauteil 3 dargestellt. Der Erdungskontakt 1 umfasst eine elektrisch leitende Kontaktplatte 5 mit einer ersten Kontaktfläche 6 für eine flächige Auflage der Kontaktplatte 5 auf der Bauteiloberfläche 4 und einer zweiten Kontaktfläche 7 für eine Anlage des Erdungskabels 2 an der Kontaktplatte 5. Das Erdungskabel 2 weist hierzu einen Kabelschuh 8 auf. Der Erdungskontakt 1 umfasst weiterhin ein Befestigungselement 9 mit einem Befestigungsabschnitt 10 für eine Befestigung des Befestigungselements 9 in dem Bauteil 3, einem als Anschlagschulter ausgebildeten Andruckelement 1 1 , welches die Kontaktplatte 5 an die Bauteiloberfläche 4 andrückt, und einem Halteabschnitt 12, welcher in einem Durchgang 13 der Kontaktplatte 5 angeordnet ist. Das Erdungskabel 2 hat einen Leiterquerschnitt von 50 mm2 oder mehr, beispielsweise 95 mm2. Die erste Kontaktfläche 6 hat einen Flächeninhalt von 250 mm2 oder mehr, beispielsweise 400 mm2. Die erste Kontaktfläche 6 und/oder die zweite Kontaktfläche 7 sind verzinkt, beispielsweise feuerverzinkt. 1 shows a grounding contact 1 for making electrical contact with a grounding cable 2 with a component 3 having an electrically conductive component surface 4. The grounding contact 1 comprises an electrically conductive contact plate 5 with a first contact surface 6 for a flat support of the contact plate 5 on the component surface 4 and a second contact surface 7 for a contact of the grounding cable 2 to the contact plate 5. The grounding cable 2 has a cable lug 8 for this purpose , The grounding contact 1 further comprises a fastening element 9 with a fastening portion 10 for fastening the fastening element 9 in the component 3, designed as a stop shoulder pressure element 1 1, which presses the contact plate 5 to the component surface 4, and a holding portion 12, which in one passage 13 of the contact plate 5 is arranged. The grounding cable 2 has a conductor cross section of 50 mm 2 or more, for example, 95 mm 2 . The first contact surface 6 has an area of 250 mm 2 or more, for example 400 mm 2 . The first contact surface 6 and / or the second contact surface 7 are galvanized, for example hot-dip galvanized.
Der Befestigungsabschnitt 10 ist als Bolzenabschnitt für ein Eintreiben in ein Bohrloch 17 des Bauteils 3 ausgebildet. Der Befestigungsabschnitt 10 weist ein selbstformendes Gewinde 18 für ein Einschrauben in das Bohrloch 17 auf. Bei nicht gezeigten Ausführungsbeispielen ist der Befestigungsabschnitt als stumpfer Setzbolzen ohne Gewindeabschnitt für ein lineares Eintreiben in das Bohrloch ausgebildet oder weist eine Schraubenspitze oder eine Nagelspitze für ein direktes Eintreiben in das Bauteil ohne Bohrloch auf. Das Befestigungselement 9 weist weiterhin einen Fixierungsabschnitt 14 für eine Fixierung des Erdungskabels 2 an der zweiten Kontaktfläche 7 auf. Der Fixierungsabschnitt 14 ist hierzu mit einem Außengewinde 15 versehen, auf welches eine Schraubenmutter 16 aufgeschraubt ist, welche den Kabelschuh 8 des Erdungskabels 2 gegen die zweite Kontaktfläche 7 drückt. The attachment portion 10 is formed as a bolt portion for driving into a borehole 17 of the component 3. The attachment portion 10 has a self-tapping thread 18 for screwing into the borehole 17. In embodiments not shown, the attachment portion is formed as a blunt setting bolt without a threaded portion for a linear driving into the wellbore or has a screw tip or a nail tip for a direct driving into the component without a borehole. The fastening element 9 furthermore has a fixing section 14 for fixing the grounding cable 2 to the second contact surface 7. The fixing portion 14 is for this purpose provided with an external thread 15, onto which a nut 16 is screwed, which presses the cable lug 8 of the grounding cable 2 against the second contact surface 7.
Der Erdungskontakt 1 weist weiterhin eine Dichtscheibe auf, welche zwischen dem Andruckelement 1 1 und der Kontaktplatte 5 angeordnet ist. Zur Abdichtung des Befestigungsabschnitts 10 des Befestigungselements 9 gegenüber einer Umgebung umfasst die Dichtscheibe einen inneren Dichtring 19 aus einem elastischen Material und eine Abdeckscheibe 20 aus einem starren Material, beispielsweise einem Metall oder einer Legierung wie Stahl. Der innere Dichtring 19, die Abdeckscheibe 20, die Dichtscheibe und/oder das Andruckelement 1 1 sind in einer dafür vorgesehenen Ausnehmung 21 der Kontaktplatte 5 aufgenommen. Der Erdungskontakt 1 weist weiterhin einen äusseren Dichtring 22 auf, welcher derart zwischen der Kontaktplatte 5 und dem Bauteil 3 angeordnet ist, dass die erste Kontaktfläche 6 gegenüber der Umgebung abgedichtet ist. Der elektrische Kontakt zwischen der ersten Kontaktfläche 6 und der Bauteiloberfläche 4 ist somit einerseits durch den inneren Dichtring 19 und andererseits durch den äusseren Dichtring 22 vor einer unter Umständen korrosiven Wirkung der Umgebung geschützt. The grounding contact 1 further comprises a sealing washer, which is arranged between the pressure element 1 1 and the contact plate 5. To seal the attachment portion 10 of the fastener 9 from an environment, the sealing washer comprises an inner sealing ring 19 made of an elastic material and a cover 20 made of a rigid material, for example a metal or an alloy such as steel. The inner sealing ring 19, the cover 20, the sealing washer and / or the pressure element 1 1 are received in a recess 21 provided for the contact plate 5. The grounding contact 1 also has an outer sealing ring 22, which is arranged between the contact plate 5 and the component 3 such that the first contact surface 6 is sealed from the environment. The electrical contact between the first contact surface 6 and the component surface 4 is thus protected on the one hand by the inner sealing ring 19 and on the other hand by the outer sealing ring 22 against a possibly corrosive effect of the environment.
Das Befestigungselement 9 ist einstückig aus einem Metall oder einer Legierung wie Stahl gefertigt, so dass der Fixierungsabschnitt 14, das Andruckelement 1 1 , der Halteabschnitt 12 und der Befestigungsabschnitt 10 starr miteinander verbunden sind. Ebenso ist die Kontaktplatte 5 einstückig aus einem Metall wie Kupfer oder einer Legierung wie Stahl gefertigt, so dass die erste Kontaktfläche 6, die zweite Kontaktfläche 7 und der Durchgang 13 starr miteinander verbunden sind. The fastening element 9 is made in one piece from a metal or an alloy such as steel, so that the fixing portion 14, the pressure element 1 1, the holding portion 12 and the attachment portion 10 are rigidly connected together. Likewise, the contact plate 5 is made in one piece from a metal such as copper or an alloy such as steel, so that the first contact surface 6, the second contact surface 7 and the passage 13 are rigidly connected to each other.
Der Durchgang 13 ist als kreiszylindrische Bohrung mit einem Bohrungsdurchmesser von 6,0 mm und einer Bohrungslänge von 2,0 mm, was der Dicke der Kontaktplatte 5 im Bereich des Durchgangs 13 gleichkommt, ausgebildet. Der Halteabschnitt 12 ist als kreiszylindrischer Schaftabschnitt mit einem Schaftdurchmesser von 5,6 mm ausgebildet. Das Verhältnis aus der Differenz des Bohrungsdurchmessers und des Schaftdurchmessers, nämlich 0,4 mm, und der Bohrungslänge, nämlich 2,0 mm, beträgt 0,2. Dadurch ist die erste Kontaktfläche 6 gegenüber dem Befestigungsabschnitt 10 um einen Kippwinkel von etwa 1 1 ,3° in jeder Richtung, also insgesamt um einen Kippwinkel von etwa 22,6° verkippbar. Um sicherzustellen, dass die erste Kontaktfläche 6 flächig an der Bauteiloberfläche 4 aufliegt, reicht es also aus, wenn das Befestigungselement 9 unter einem Winkel von 90°-1 1 ,3°=78,7° oder mehr zur Bauteiloberfläche 4 an dem Bauteil 3 befestigt wird. The passage 13 is a circular cylindrical bore with a bore diameter of 6.0 mm and a bore length of 2.0 mm, which is the thickness of the contact plate 5 in the region of Passage 13 equals, trained. The holding portion 12 is formed as a circular cylindrical shaft portion with a shaft diameter of 5.6 mm. The ratio of the difference between the bore diameter and the shank diameter, namely 0.4 mm, and the bore length, namely 2.0 mm, is 0.2. As a result, the first contact surface 6 with respect to the attachment portion 10 by a tilt angle of about 1 1, 3 ° in each direction, ie a total tilt angle of about 22.6 ° tilted. In order to ensure that the first contact surface 6 rests flat against the component surface 4, it is therefore sufficient if the fastening element 9 is at an angle of 90 ° -1, 3 ° = 78.7 ° or more to the component surface 4 on the component 3 is attached.

Claims

PATENTANSPRUECHE cLAIMS
1 . Erdungskontakt zur elektrischen Kontaktierung eines Erdungskabels mit einem eine elektrisch leitende Bauteiloberfläche aufweisenden Bauteil, mit einer elektrisch leitenden Kontaktplatte und einem Befestigungselement, wobei die Kontaktplatte eine erste Kontaktfläche für eine flächige Auflage der Kontaktplatte auf der Bauteiloberfläche, eine zweite Kontaktfläche für eine Anlage eines Erdungskabels an der Kontaktplatte und einen Durchgang für das Befestigungselement aufweist, wobei das Befestigungselement einen Befestigungsabschnitt für eine Befestigung des Befestigungselements in dem Bauteil, ein Andruckelement für ein Andrücken der Kontaktplatte an die Bauteiloberfläche und einen Halteabschnitt für eine Anordnung in dem Durchgang der Kontaktplatte, wenn das Andruckelement die Kontaktplatte an die Bauteiloberfläche andrückt, aufweist, wobei die erste Kontaktfläche gegenüber dem Befestigungsabschnitt um einen Kippwinkel von mindestens 6° verkippbar ist, wenn der Halteabschnitt in dem Durchgang angeordnet ist. 1 . Ground contact for electrically contacting a grounding cable with a component having an electrically conductive component surface, with an electrically conductive contact plate and a fastening element, wherein the contact plate has a first contact surface for a flat contact surface of the contact plate on the component surface, a second contact surface for a system of a grounding cable to the Contact plate and a passage for the fastening element, wherein the fastening element has a fastening portion for fastening the fastening element in the component, a pressure element for pressing the contact plate to the component surface and a holding portion for an arrangement in the passage of the contact plate, when the pressure element, the contact plate presses against the component surface, wherein the first contact surface with respect to the attachment portion by a tilt angle of at least 6 ° is tilted when the Halteabs Chnitt is arranged in the passage.
2. Erdungskontakt nach Anspruch 1 , wobei der Halteabschnitt starr mit dem Befestigungsabschnitt verbunden ist. 2. Grounding contact according to claim 1, wherein the holding portion is rigidly connected to the mounting portion.
3. Erdungskontakt nach einem der vorhergehenden Ansprüche, wobei die erste Kontaktfläche starr mit dem Durchgang verbunden ist. 3. Grounding contact according to one of the preceding claims, wherein the first contact surface is rigidly connected to the passage.
4. Erdungskontakt nach einem der vorhergehenden Ansprüche, wobei die erste Kontaktfläche gegenüber dem Befestigungsabschnitt um einen Kippwinkel von mindestens 10° verkippbar ist. 4. Grounding contact according to one of the preceding claims, wherein the first contact surface with respect to the attachment portion by a tilt angle of at least 10 ° is tilted.
5. Erdungskontakt nach Anspruch 4, wobei die erste Kontaktfläche gegenüber dem Befestigungsabschnitt um einen Kippwinkel von mindestens 20° verkippbar ist. 5. Earthing contact according to claim 4, wherein the first contact surface with respect to the attachment portion by a tilt angle of at least 20 ° is tilted.
6. Erdungskontakt, wobei der Durchgang als kreiszylindrische Bohrung mit einem Bohrungsdurchmesser und einer Bohrungslänge ausgebildet ist, und wobei der Halteabschnitt als kreiszylindrischer Schaftabschnitt mit einem Schaftdurchmesser ausgebildet ist. 6. grounding contact, wherein the passage is formed as a circular cylindrical bore having a bore diameter and a bore length, and wherein the holding portion is formed as a circular cylindrical shaft portion having a shank diameter.
7. Erdungskontakt nach Anspruch 6, wobei das Verhältnis aus der Differenz des Bohrungsdurchmessers und des Schaftdurchmessers einerseits und der Bohrungslänge andererseits mindestens 0,05 beträgt. 7. Grounding contact according to claim 6, wherein the ratio of the difference between the bore diameter and the shank diameter on the one hand and the bore length on the other hand is at least 0.05.
8. Erdungskontakt nach Anspruch 7, wobei das Verhältnis aus der Differenz des Bohrungsdurchmessers und des Schaftdurchmessers einerseits und der Bohrungslänge andererseits mindestens 0,1 beträgt. 8. Grounding contact according to claim 7, wherein the ratio of the difference between the bore diameter and the shank diameter on the one hand and the bore length on the other hand is at least 0.1.
9. Erdungskontakt nach Anspruch 8, wobei das Verhältnis aus der Differenz des Bohrungsdurchmessers und des Schaftdurchmessers einerseits und der Bohrungslänge andererseits mindestens 0,2 beträgt. 9. Grounding contact according to claim 8, wherein the ratio of the difference between the bore diameter and the shank diameter on the one hand and the bore length on the other hand is at least 0.2.
10. Erdungskontakt nach einem der vorhergehenden Ansprüche, wobei das Andruckelement starr mit dem Halteabschnitt verbunden ist. 10. Grounding contact according to one of the preceding claims, wherein the pressure element is rigidly connected to the holding portion.
1 1 . Erdungskontakt nach Anspruch 10, wobei das Andruckelement als Anschlagschulter an dem Halteabschnitt ausgebildet ist. 1 1. Earthing contact according to claim 10, wherein the pressure element is designed as a stop shoulder on the holding portion.
12. Erdungskontakt nach einem der vorhergehenden Ansprüche, weiterhin aufweisend eine Dichtscheibe, welche zwischen dem Andruckelement und der Kontaktplatte angeordnet ist. 12. Grounding contact according to one of the preceding claims, further comprising a sealing disc, which is arranged between the pressure element and the contact plate.
13. Erdungskontakt nach einem der vorhergehenden Ansprüche, wobei das Befestigungselement einen Fixierungsabschnitt für eine Fixierung des Erdungskabels an der zweiten Kontaktfläche aufweist. 13. Grounding contact according to one of the preceding claims, wherein the fastening element has a fixing portion for fixing the grounding cable to the second contact surface.
14. Erdungskontakt nach einem der vorhergehenden Ansprüche, wobei der Befestigungsabschnitt als Bolzenabschnitt für ein Eintreiben in ein Bohrloch des Bauteils ausgebildet ist. 14. Earthing contact according to one of the preceding claims, wherein the fastening portion is formed as a bolt portion for driving into a borehole of the component.
15. Erdungskontakt nach Anspruch 14, wobei der Bolzenabschnitt ein insbesondere selbstformendes Gewinde für ein Einschrauben in das Bohrloch aufweist. 15. Earthing contact according to claim 14, wherein the bolt portion has a particular self-tapping thread for screwing into the borehole.
EP18716638.4A 2017-04-18 2018-04-17 Earthing contact Active EP3613104B1 (en)

Applications Claiming Priority (2)

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EP17166858.5A EP3392970A1 (en) 2017-04-18 2017-04-18 Earthing contact
PCT/EP2018/059714 WO2018192899A1 (en) 2017-04-18 2018-04-17 Earthing contact

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EP3613104A1 true EP3613104A1 (en) 2020-02-26
EP3613104B1 EP3613104B1 (en) 2024-05-29
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KR (1) KR102538265B1 (en)
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TWI748058B (en) 2021-12-01
KR102538265B1 (en) 2023-05-30
CA3052813A1 (en) 2018-10-25
EP3613104B1 (en) 2024-05-29
TW201840066A (en) 2018-11-01
CN110546818B (en) 2021-08-13
US20200028283A1 (en) 2020-01-23
US10756454B2 (en) 2020-08-25
EP3392970A1 (en) 2018-10-24
AU2018255842B2 (en) 2023-03-30
JP2020513153A (en) 2020-04-30
CN110546818A (en) 2019-12-06
WO2018192899A1 (en) 2018-10-25
AU2018255842A1 (en) 2019-08-29
EP3613104C0 (en) 2024-05-29

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