EP3977567A1 - Band clamp - Google Patents

Band clamp

Info

Publication number
EP3977567A1
EP3977567A1 EP20728772.3A EP20728772A EP3977567A1 EP 3977567 A1 EP3977567 A1 EP 3977567A1 EP 20728772 A EP20728772 A EP 20728772A EP 3977567 A1 EP3977567 A1 EP 3977567A1
Authority
EP
European Patent Office
Prior art keywords
layer
coating
clamp according
clamp
tape
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
EP20728772.3A
Other languages
German (de)
French (fr)
Other versions
EP3977567B1 (en
Inventor
Philipp Heinze
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.)
Oetiker Schweiz AG
Original Assignee
Oetiker Schweiz 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 Oetiker Schweiz AG filed Critical Oetiker Schweiz AG
Publication of EP3977567A1 publication Critical patent/EP3977567A1/en
Application granted granted Critical
Publication of EP3977567B1 publication Critical patent/EP3977567B1/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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5804—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part
    • H01R13/5812—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part the cable clamping being achieved by mounting the separate part on the housing of the coupling device
    • 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
    • H01R13/02—Contact members
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • 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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6592—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable
    • 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

Definitions

  • the invention relates to a tape clamp for attaching the shielding of a cable to a tube, for example when attaching current-carrying cables or harnesses by means of connectors to batteries, motors, generators, body parts, such as in electric vehicles.
  • the cables used have lines with a conductor often made of aluminum and with an insulation and on the insulation a shield made of a braid also made of aluminum.
  • a fastening of such a cable by means of a band clamp on a plug is disclosed in WO 2018/168831 A1.
  • the plug has a housing with a tube made of aluminum.
  • the cables are inserted through the tube into the connector housing, while the braid that serves as a shield is placed over the outside of the tube.
  • the band clamp encloses the shield in a ring shape and presses it onto the outer peripheral surface of the tube.
  • band clamps made of a stainless steel are used, there is a risk of contact corrosion between the clamp and the aluminum shield and possibly the aluminum tube or cable ladder.
  • the band clamp is coated with an insulator in order to avoid contact corrosion. Zinc flakes embedded in the insulator should also act as a sacrificial electrode.
  • Typical band clamps are essentially ring-shaped with a W-shaped protuberance, also referred to as an ear, which serves as a tensioning device.
  • the ear is narrowed with a tool and thus the diameter of the ring formed by the clamp is reduced and the clamp is drawn together over the shield. The degree of plastic deformation of the clamp is very high.
  • the invention is therefore based on the object of avoiding the aforementioned corrosion between the shielding of the current-carrying cable and the strap clamp.
  • the invention relates to a strap clamp constructed as described above, but provides a particularly robust and durable coating of the strap clamp that does not lose its corrosion-inhibiting effect during assembly and operation.
  • Band clamps of embodiments of the invention are made for strength reasons from a band made of steel, for example made of stainless steel, which is coated as described below.
  • the steel band is closed to form a ring and surrounds the item to be fastened, here a shield on a tube.
  • the shielding is made as a braid made of a material with good electrical conductivity such as copper or aluminum.
  • the tube is a sleeve as part of a housing of a connector or plug or another sleeve into which the lines of the cable shielded in this way enter.
  • the cross section of the tube can be oval or circular.
  • the band clamp has a tensioning device like the ear described above.
  • the band clamp is provided with an insulating coating made of a polymer.
  • Parylene in particular Parylene HT, has proven to be particularly suitable as a polymer material, which is preferably vapor-deposited onto the degreased band clamp from the gas phase in a vacuum chamber.
  • the polymer coating withstands high operating temperatures and allows strong plastic deformations, including on the ear-shaped clamping device, without detaching from the band clamp.
  • the polymer coating is applied to the finished tape clamp in the last step of the clamp manufacture. It should have a thickness in the size Order no more than 20 mih, for example about 10 pm. With this thickness, the risk of impairment of the clamp function, in particular its elasticity, is low.
  • the polymer coating follows the deformation of the clamp without peeling off.
  • a Zn layer preferably with a passivating Zn oxide layer on its surface, and on top of it, in turn, a topcoat made of a polymer layer, are to avoid corrosion between the band clamp and the cable shield on the surface of the band clamp, in particular applied to a synthetic resin layer. It should in turn have a thickness of the order of about 5 to 20 ⁇ m, for example about 10 ⁇ m.
  • the entire surface of the band clamp is preferably coated in this way.
  • the passivated Zn layer contributes to corrosion protection and has a certain roughness on its surface, to which the topcoat adheres particularly well.
  • the synthetic resin layer is preferably made of TD Excel 300, which is stabilized with aluminum powder.
  • Aluminum powder in the topcoat has a beneficial effect on avoiding contact corrosion with respect to the shield, which is also made of aluminum. It also makes the coating resistant to damage when the band clamp is tensioned.
  • the tape clamp for applying the coating is first degreased, provided by thermal diffusion (Zn thermal diffusion or sherardizing) on its entire surface with the Zn layer, then washed, then passivated with a Zn oxide layer and finally with sealed with a top polymer or synthetic resin layer.
  • thermal diffusion Zn thermal diffusion or sherardizing
  • the Zn layer can also be applied by means of a Zn lamellar coating instead of thermal diffusion and then forms a Zn lamellar coating.
  • the zinc layer is applied as a closed layer over the entire surface of the band clamp.
  • the said polymer or synthetic resin layer is suitable as a topcoat, but also an inorganic system.
  • the aforementioned parylene can also be used as the polymer. If necessary, further layers can be provided over the topcoat, for example to give the coating a desired appearance.
  • the powder is mixed into the topcoat.
  • the particles of the powder can also be in the form of flakes.
  • the powder in the topcoat advantageously has a higher hardness than its main components (polymer or synthetic resin).
  • the topcoat can therefore also be mixed with ceramic powder or flakes, optionally in addition to the other powders mentioned. This increases its abrasion resistance and thus the resistance of the coating to the clamping tool and the friction in the event of displacements over the shield, as can occur during clamping and during operation with vibrations and temperature changes.
  • silicates are particularly advantageous.
  • a thin silicate layer for example up to 3 ⁇ m thick, can also be applied between the Zn layer and the topcoat (optionally mixed with powder, in particular aluminum powder).
  • powder or flakes of essentially the same material as that of the shield can be used in the topcoat, for example aluminum powder with a shield made of aluminum or copper powder with a shield made of copper. This means that there is no contact corrosion between the top coat and the shielding and the surfaces remain corrosion-free and of good optical quality. Any contact corrosion among the other components is suppressed by the Zn layer under the top coat.

Landscapes

  • Clamps And Clips (AREA)
  • Insulated Conductors (AREA)
  • Cable Accessories (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

The invention relates to a band clamp having an insulating coating, for fastening the shielding of a cable, which has a conductor, an insulation surrounding same and an outer shielding. Measures are taken to make the coating robust and durable and to avoid contact corrosion on the shielding and the band clamp.

Description

Bandklemme Tape clamp
[0001] Die Erfindung betrifft eine Bandklemme zum Befestigen der Abschirmung eines Kabels an einem Tubus, beispielsweise bei der Befestigung von stromführenden Kabeln oder Kabelbäumen mittels Steckverbindern an Batterien, Motoren, Generatoren, Karosserieteilen, etwa bei Elektrofahrzeugen. The invention relates to a tape clamp for attaching the shielding of a cable to a tube, for example when attaching current-carrying cables or harnesses by means of connectors to batteries, motors, generators, body parts, such as in electric vehicles.
Stand der Technik State of the art
Häufig sind bei derartigen Kabeln mehrere einzeln oder gemeinsam abgeschirmte Leitungen vorhanden, wobei die Befestigung der Abschirmung des Kabels etwa am Tubus (einer Hülse) eines Steckverbinders mittels einer Bandklemme erfolgt. Frequently, several individually or jointly shielded lines are present in such cables, with the shielding of the cable being fastened to the tube (a sleeve) of a connector by means of a band clamp.
[0002] Die verwendeten Kabel weisen Leitungen mit einem Leiter häufig aus Aluminium und mit einer Isolierung und auf der Isolierung eine Abschirmung aus einem Geflecht ebenfalls aus Aluminium auf. The cables used have lines with a conductor often made of aluminum and with an insulation and on the insulation a shield made of a braid also made of aluminum.
[0003] Eine Befestigung eines solchen Kabels mittels einer Bandklemme an einem Stecker ist in WO 2018/168831 A1 offenbart. Der Stecker weist ein Gehäuse mit einem Tubus aus Aluminium auf. Die Leitungen sind durch den Tubus in das Steckergehäuse eingeführt, während das als Abschirmung dienende Geflecht außen über den Tubus gelegt ist. Die Bandklemme umschließt die Abschirmung ringförmig und presst sie auf die Außenumfangfläche des Tubus. A fastening of such a cable by means of a band clamp on a plug is disclosed in WO 2018/168831 A1. The plug has a housing with a tube made of aluminum. The cables are inserted through the tube into the connector housing, while the braid that serves as a shield is placed over the outside of the tube. The band clamp encloses the shield in a ring shape and presses it onto the outer peripheral surface of the tube.
[0004] Werden dazu übliche, aus einem CrNi-Stahl bestehende Bandklemmen verwendet, so besteht die Gefahr von Kontaktkorrosion zwischen der Klemme und der Aluminium-Abschirmung und gegebenenfalls dem Aluminium-Tubus oder -Kabelleiter. Um Kontaktkorrosion zu vermeiden, ist die Bandklemme nach WO 2018/168831 A1 mit einem Isolator beschichtet. Im Isolator eingebettete Zinkflocken sollen zudem als Opferelektrode wirken. If conventional band clamps made of a stainless steel are used, there is a risk of contact corrosion between the clamp and the aluminum shield and possibly the aluminum tube or cable ladder. According to WO 2018/168831 A1, the band clamp is coated with an insulator in order to avoid contact corrosion. Zinc flakes embedded in the insulator should also act as a sacrificial electrode.
Zusammenfassung der Erfindung Summary of the invention
[0005] Typische Bandklemmen wie auch die in WO 2018/168831 A1 offenbarte sind im Wesentlichen ringförmig mit einer auch als Ohr bezeichneten W-förmigen Ausstülpung, die als Spanneinrichtung dient. Zum Spannen der Klemme auf dem zu befestigenden Gut, hier der Abschirmung auf dem Tubus, wird das Ohr mit einem Werkzeug verengt und damit der Durchmesser des von der Klemme gebildeten Rings verringert und die Klemme über der Abschirmung zusammengezogen. Dabei ist das Maß der plastischen Verformung der Klemme sehr hoch. Das Ansetzen des Werkzeugs am Ohr, dessen Verformung und die Reibung der Klemme auf dem zu befestigenden Gut sowie hohe Temperaturen im Betrieb können bei der aus WO 2018/168831 A1 bekannten Klemme zu einer solchen Beschädigung oder Ablösung der Beschichtung der Klemme führen, dass die korrosionsverhindernde Wirkung verlorengeht. Typical band clamps, as well as those disclosed in WO 2018/168831 A1, are essentially ring-shaped with a W-shaped protuberance, also referred to as an ear, which serves as a tensioning device. To clamp the clamp on the item to be fastened, here the shield on the tube, the ear is narrowed with a tool and thus the diameter of the ring formed by the clamp is reduced and the clamp is drawn together over the shield. The degree of plastic deformation of the clamp is very high. The application of the tool to the ear, its deformation and the friction of the clamp on the item to be fastened as well as high In the case of the clamp known from WO 2018/168831 A1, temperatures during operation can lead to such damage or detachment of the coating of the clamp that the corrosion-preventing effect is lost.
[0006] Der Erfindung liegt daher die Aufgabe zugrunde, die genannte Korrosion zwischen der Abschirmung des stromführenden Kabels und der Bandklemme zu vermeiden. The invention is therefore based on the object of avoiding the aforementioned corrosion between the shielding of the current-carrying cable and the strap clamp.
[0007] Die Lösung dieser Aufgabe gelingt mit der in den Patentansprüchen angegebenen Erfindung. This object is achieved with the invention specified in the claims.
[0008] Die Erfindung betrifft eine wie zuvor beschrieben aufgebaute Bandklemme, sieht jedoch eine besonders robuste und dauerhafte Beschichtung der Bandklemme vor, die auch bei der Montage und im Betrieb nicht ihre korrosionshemmende Wirkung verliert. The invention relates to a strap clamp constructed as described above, but provides a particularly robust and durable coating of the strap clamp that does not lose its corrosion-inhibiting effect during assembly and operation.
Beschreibung von Ausführungsformen der Erfindung Description of embodiments of the invention
[0009] Bandklemmen von Ausführungsformen der Erfindung sind aus Festigkeitsgründen aus einem Band aus Stahl, beispielsweise aus CrNi-Stahl gefertigt, das wie unten beschrieben beschichtet wird. In Gebrauch ist das Stahlband zu einem Ring geschlossen und umgibt das zu befestigenden Gut, hier eine Abschirmung auf einem Tubus. Die Abschirmung ist als Geflecht aus einem elektrisch gut leitfähigen Material wie Kupfer oder Aluminium gefertigt. Der Tubus ist eine Hülse als Bestandteil eines Gehäuses eines Steckverbinders bzw. Steckers oder eine andere Hülse, in die die Leitungen des so abgeschirmten Kabels eintreten. Der Querschnitt des Tubus kann oval oder kreisförmig rund sein. Die Bandklemme weist eine Spanneinrichtung wie das oben beschriebene Ohr auf. Band clamps of embodiments of the invention are made for strength reasons from a band made of steel, for example made of stainless steel, which is coated as described below. In use, the steel band is closed to form a ring and surrounds the item to be fastened, here a shield on a tube. The shielding is made as a braid made of a material with good electrical conductivity such as copper or aluminum. The tube is a sleeve as part of a housing of a connector or plug or another sleeve into which the lines of the cable shielded in this way enter. The cross section of the tube can be oval or circular. The band clamp has a tensioning device like the ear described above.
[00010] Gemäß einer Ausführungsform der Erfindung ist die Bandklemme mit einer isolierenden Beschichtung aus einem Polymer versehen. Als Polymermaterial hat sich Parylene, insbesondere Parylene HT als besonders geeignet erwiesen, das vorzugsweise in einer Vakuumkammer aus der Gasphase auf die entfettete Bandklemme aufgedampft wird. According to one embodiment of the invention, the band clamp is provided with an insulating coating made of a polymer. Parylene, in particular Parylene HT, has proven to be particularly suitable as a polymer material, which is preferably vapor-deposited onto the degreased band clamp from the gas phase in a vacuum chamber.
[0001 1 ] Die Polymerbeschichtung hält hohe Betriebstemperaturen aus und gestattet starke plastische Verformungen, auch an der ohrförmigen Spanneinrichtung, ohne sich von der Bandklemme abzulösen. The polymer coating withstands high operating temperatures and allows strong plastic deformations, including on the ear-shaped clamping device, without detaching from the band clamp.
[00012] Um jedweden Kontakt mit dem CrNi-Stahl der Klemme auszuschließen, ist es zweckmäßig, nicht nur die Innenfläche sondern auch die Seitenkanten und vorzugsweise die gesamte Oberfläche der Bandklemme zu beschichten. In order to exclude any contact with the stainless steel of the clamp, it is useful to coat not only the inner surface but also the side edges and preferably the entire surface of the band clamp.
[00013] Die Polymerbeschichtung wird im letzten Verfahrensschritt der Klemmenherstellung auf die fertige Bandklemme aufgebracht. Sie sollte eine Dicke in der Größen- Ordnung von nicht mehr als 20 mih, beispielsweise etwa 10 pm haben. Bei dieser Dicke ist die Gefahr einer Beeinträchtigung der Klemmenfunktion, insbesondere ihrer Elastizität, gering. Die Polymerbeschichtung folgt der Verformung der Klemme ohne abzubröckeln. The polymer coating is applied to the finished tape clamp in the last step of the clamp manufacture. It should have a thickness in the size Order no more than 20 mih, for example about 10 pm. With this thickness, the risk of impairment of the clamp function, in particular its elasticity, is low. The polymer coating follows the deformation of the clamp without peeling off.
[00014] Gemäß einer anderen Ausführungsform der Erfindung werden zur Vermeidung der Korrosion zwischen der Bandklemme und der Kabelabschirmung auf die Oberfläche der Bandklemme eine Zn-Schicht, vorzugsweise mit einer passivierenden Zn-Oxidschicht auf ihrer Oberfläche, und darüber wiederum ein Decklack aus einer Polymerschicht, insbesondere einer Kunstharzschicht aufgetragen. Sie sollte wiederum eine Dicke in der Größenordnung von etwa 5 bis 20 pm, beispielsweise etwa 10 pm haben. Auch hier ist vorzugsweise die gesamte Oberfläche der Bandklemme derart beschichtet. According to another embodiment of the invention, a Zn layer, preferably with a passivating Zn oxide layer on its surface, and on top of it, in turn, a topcoat made of a polymer layer, are to avoid corrosion between the band clamp and the cable shield on the surface of the band clamp, in particular applied to a synthetic resin layer. It should in turn have a thickness of the order of about 5 to 20 μm, for example about 10 μm. Here, too, the entire surface of the band clamp is preferably coated in this way.
[00015] Die passivierte Zn-Schicht trägt zum Korrosionsschutz bei und weist eine gewisse Rauigkeit auf ihrer Oberfläche auf, auf der der Decklack besonders gut haftet. The passivated Zn layer contributes to corrosion protection and has a certain roughness on its surface, to which the topcoat adheres particularly well.
[00016] Die Kunstharzschicht besteht vorzugsweise aus TD Excel 300, das mit Aluminiumpulver stabilisiert ist. The synthetic resin layer is preferably made of TD Excel 300, which is stabilized with aluminum powder.
[00017] Aluminiumpulver im Decklack wirkt sich günstig auf die Vermeidung von Kontaktkorrosion gegenüber der ebenfalls aus Aluminium bestehenden Abschirmung aus. Außerdem macht es die Beschichtung widerstandsfähig gegen Beschädigung beim Spannen der Bandklemme. Aluminum powder in the topcoat has a beneficial effect on avoiding contact corrosion with respect to the shield, which is also made of aluminum. It also makes the coating resistant to damage when the band clamp is tensioned.
[00018] Im Einzelnen wird die Bandklemme zum Aufbringen der Beschichtung zunächst entfettet, durch thermische Diffusion (Zn-Thermodiffusion bzw. Sherardisieren) auf ihrer gesamten Oberfläche mit der Zn-Schicht versehen, danach gewaschen, anschließend mit einer Zn-Oxidschicht passiviert und schließlich mit einer obersten Polymer- bzw. Kunstharzschicht versiegelt. In detail, the tape clamp for applying the coating is first degreased, provided by thermal diffusion (Zn thermal diffusion or sherardizing) on its entire surface with the Zn layer, then washed, then passivated with a Zn oxide layer and finally with sealed with a top polymer or synthetic resin layer.
[00019] Alternativ kann die Zn-Schicht statt durch Thermodiffusion auch durch Zn- Lamellenbeschichtung aufgebracht sein und bildet dann einen Zn-Lamellenüberzug. Die Zinkschicht ist als geschlossene Schicht auf der gesamten Oberfläche der Bandklemme aufgebracht. [00019] Alternatively, the Zn layer can also be applied by means of a Zn lamellar coating instead of thermal diffusion and then forms a Zn lamellar coating. The zinc layer is applied as a closed layer over the entire surface of the band clamp.
[00020] Als Decklack eignet sich die genannte Polymer- bzw. Kunstharzschicht, aber auch ein anorganisches System. Als Polymer kann auch das erwähnte Parylene verwendet sein. Über dem Decklack können gegebenenfalls weitere Schichten vorgesehen sein, etwa um der Beschichtung ein gewünschtes Aussehen zu geben. The said polymer or synthetic resin layer is suitable as a topcoat, but also an inorganic system. The aforementioned parylene can also be used as the polymer. If necessary, further layers can be provided over the topcoat, for example to give the coating a desired appearance.
[00021 ] Das Pulver ist im Decklack eingemischt. Die Teilchen des Pulvers können auch in Form von Flocken vorliegen. [00022] Vorteilhafterweise weist das Pulver im Decklack eine höhere Härte als dessen Hauptbestandteile (Polymer bzw. Kunstharz) auf. Der Decklack kann daher auch mit Keramikpulver bzw. -flocken versetzt sein, gegebenenfalls zusätzlich zu den genannten anderen Pulvern. Dies erhöht seine Abriebfestigkeit und damit die Widerstandsfähigkeit der Beschichtung gegenüber dem Spannwerkzeug und der Reibung bei Verschiebungen über der Abschirmung, wie sie beim Spannen und im Betrieb bei Vibrationen und Temperaturwechseln auftreten können. The powder is mixed into the topcoat. The particles of the powder can also be in the form of flakes. The powder in the topcoat advantageously has a higher hardness than its main components (polymer or synthetic resin). The topcoat can therefore also be mixed with ceramic powder or flakes, optionally in addition to the other powders mentioned. This increases its abrasion resistance and thus the resistance of the coating to the clamping tool and the friction in the event of displacements over the shield, as can occur during clamping and during operation with vibrations and temperature changes.
[00023] Besonders vorteilhaft ist die Verwendung von Silikaten. Eine dünne Silikatschicht von beispielsweise bis 3 pm Dicke kann auch zwischen der Zn-Schicht und dem (gegebenenfalls mit Pulver, insbesondere Aluminiumpulver versetzten) Decklack angebracht sein. The use of silicates is particularly advantageous. A thin silicate layer, for example up to 3 μm thick, can also be applied between the Zn layer and the topcoat (optionally mixed with powder, in particular aluminum powder).
[00024] Allgemein können im Decklack Pulver oder Flocken aus im Wesentlichen dem gleichen Material wie dem der Abschirmung verwendet werden, beispielsweise also Aluminiumpulver bei einer Abschirmung aus Aluminium oder Kupferpulver bei einer Abschirmung aus Kupfer. Dadurch entsteht keine Kontaktkorrosion zwischen dem Decklack und der Abschirmung und die Oberflächen bleiben korrosionsfrei und von guter optischer Qualität. Etwaige Kontaktkorrosion unter den anderen Bestandteilen wird dabei von der Zn-Schicht unter dem Decklack unterdrückt. In general, powder or flakes of essentially the same material as that of the shield can be used in the topcoat, for example aluminum powder with a shield made of aluminum or copper powder with a shield made of copper. This means that there is no contact corrosion between the top coat and the shielding and the surfaces remain corrosion-free and of good optical quality. Any contact corrosion among the other components is suppressed by the Zn layer under the top coat.
[00025] Alle beschriebenen Beschichtungen widerstehen hohen Temperaturen, sind mit der Bandklemme verformbar und haften gut auf ihr, so dass sie bei der Montage, dem Spannen der Klemme und im Betrieb unbeeinträchtigt bleiben. All the coatings described withstand high temperatures, are deformable with the band clamp and adhere well to it, so that they remain unaffected during assembly, tensioning of the clamp and in operation.
[00026] Die Merkmale der Ausführungsbeispiele können vorteilhaft auch miteinander kombiniert werden. The features of the exemplary embodiments can advantageously also be combined with one another.

Claims

Patentansprüche Claims
1 . Bandklemme zum Befestigen der Abschirmung eines Kabels, das einen Leiter, eine diesen umgebende Isolierung und eine äußere Abschirmung aufweist, an einem Tubus, 1 . Tape clamp for fastening the shielding of a cable, which has a conductor, an insulation surrounding it and an outer shield, to a tube,
wobei die Bandklemme mit einer die Korrosion zwischen der Bandklemme und dem Tubus oder der Abschirmung hemmenden Beschichtung versehen ist. wherein the band clamp is provided with a coating which inhibits corrosion between the band clamp and the tube or the shield.
2. Bandklemme nach Anspruch 1 , wobei die Beschichtung ein Polymer, insbesondere Parylene HT aufweist. 2. Tape clamp according to claim 1, wherein the coating comprises a polymer, in particular Parylene HT.
3. Bandklemme nach Anspruch 1 oder 2, wobei die Beschichtung eine Zn-Schicht umfasst. 3. The tape clamp of claim 1 or 2, wherein the coating comprises a Zn layer.
4. Bandklemme nach Anspruch 3, wobei die Zn-Schicht thermisch aufdiffundiert oder als Lamellenüberzug aufgebracht ist und vorzugsweise durch eine Zn-Oxidschicht passiviert ist. 4. Band clamp according to claim 3, wherein the Zn layer is thermally diffused or applied as a lamellar coating and is preferably passivated by a Zn oxide layer.
5. Bandklemme nach Anspruch 3 oder 4, wobei die Beschichtung einen über der Zinkschicht aufgebrachten Decklack umfasst. 5. The tape clip of claim 3 or 4, wherein the coating comprises a topcoat applied over the zinc layer.
6. Bandklemme nach einem der Ansprüche 3 bis 5, wobei der Decklack eine Polymer- oder Kunstharzschicht umfasst. 6. Tape clamp according to one of claims 3 to 5, wherein the top coat comprises a polymer or synthetic resin layer.
7. Bandklemme nach einem der Ansprüche 3 bis 6, wobei der Decklack Aluminium enthält. 7. Tape clamp according to one of claims 3 to 6, wherein the topcoat contains aluminum.
8. Bandklemme nach einem der Ansprüche 3 bis 7, wobei der Decklack Keramik enthält. 8. A tape clamp according to any one of claims 3 to 7, wherein the topcoat contains ceramic.
9. Bandklemme nach einem der Ansprüche 3 bis 8, wobei der Decklack Silikat enthält. 9. Tape clamp according to one of claims 3 to 8, wherein the topcoat contains silicate.
10. Bandklemme nach einem der Ansprüche 3 bis 9, mit einer Silikatschicht zwischen der Zn-Schicht und dem Decklack. 10. Tape clamp according to one of claims 3 to 9, with a silicate layer between the Zn layer and the top coat.
1 1. Bandklemme nach einem der vorhergehenden Ansprüche, wobei die Beschichtung eine maximale Dicke in der Größenordnung von 20 pm aufweist. 1 1. tape clamp according to one of the preceding claims, wherein the coating has a maximum thickness in the order of 20 pm.
12. System mit: 12. System with:
einem Kabel, und a cable, and
einer Bandklemme nach einem der vorhergehenden Ansprüche zur Befestigung einer Abschirmung des Kabels an einem Tubus. a tape clamp according to one of the preceding claims for fastening a shield of the cable to a tube.
13. System nach Anspruch 12, wobei die Bandklemme einen Decklack aufweist, der mit dem gleichen Material wie dem der Abschirmung versetzt ist. 13. The system of claim 12, wherein the tape clamp has a topcoat that is coated with the same material as that of the shield.
14. System nach Anspruch 13, wobei der Decklack mit Aluminium versetzt ist und die Abschirmung aus Aluminium gefertigt ist. 14. The system of claim 13, wherein the topcoat is mixed with aluminum and the shield is made of aluminum.
15. Verfahren zum Herstellen einer beschichteten Bandklemme nach einem der Ansprüche 1 bis 1 1 , 15. A method for producing a coated tape clamp according to any one of claims 1 to 1 1,
dadurch gekennzeichnet, dass die Beschichtung der Bandklemme zunächst durch Aufbringen einer Zn-Schicht und dann durch Aufbringen einer Kunstharzschicht erzeugt wird, die vorzugsweise mit Al-Pulver stabilisiert ist. characterized in that the coating of the band clamp is produced first by applying a Zn layer and then by applying a synthetic resin layer, which is preferably stabilized with Al powder.
EP20728772.3A 2019-05-31 2020-05-31 Band clamp and method of production thereof Active EP3977567B1 (en)

Applications Claiming Priority (2)

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PCT/EP2019/064194 WO2020239236A1 (en) 2019-05-31 2019-05-31 Band clamp
PCT/EP2020/065103 WO2020240035A1 (en) 2019-05-31 2020-05-31 Band clamp

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EP3977567A1 true EP3977567A1 (en) 2022-04-06
EP3977567B1 EP3977567B1 (en) 2024-06-05

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US (1) US11949187B2 (en)
EP (1) EP3977567B1 (en)
JP (1) JP7344989B2 (en)
KR (1) KR102644083B1 (en)
CN (1) CN113994543A (en)
BR (1) BR112021023471A2 (en)
CA (1) CA3138619A1 (en)
MX (1) MX2021014608A (en)
WO (2) WO2020239236A1 (en)

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JP2007009308A (en) * 2005-07-04 2007-01-18 Togo Seisakusho Corp Rust-proof metal parts and manufacturing method therefor
CN101709510A (en) * 2009-12-02 2010-05-19 南昌大学 Shielding functional textile integrating high fire resistance, high electric conduction and high magnetic permeability
US9136654B2 (en) * 2012-01-05 2015-09-15 Corning Gilbert, Inc. Quick mount connector for a coaxial cable
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JP6097728B2 (en) * 2014-08-20 2017-03-15 古河電気工業株式会社 Power cable connecting apparatus and power cable connecting method
ES2862146T3 (en) * 2015-10-09 2021-10-07 Doerken Ewald Ag Protective coating against corrosion
EP3327868B1 (en) * 2016-11-23 2019-01-09 MD Elektronik GmbH Electrical connector for a multi-core electric cable
JP6794883B2 (en) * 2017-03-15 2020-12-02 株式会社オートネットワーク技術研究所 Electromagnetic shield parts and wire harness
CN113258325A (en) * 2020-01-28 2021-08-13 富加宜（美国）有限责任公司 High-frequency middle plate connector

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CN113994543A (en) 2022-01-28
KR102644083B1 (en) 2024-03-07
EP3977567B1 (en) 2024-06-05
JP2022534720A (en) 2022-08-03
WO2020240035A1 (en) 2020-12-03
US20220239035A1 (en) 2022-07-28
CA3138619A1 (en) 2020-12-03
BR112021023471A2 (en) 2022-01-18
US11949187B2 (en) 2024-04-02
MX2021014608A (en) 2022-01-06
WO2020239236A1 (en) 2020-12-03
JP7344989B2 (en) 2023-09-14
KR20220011185A (en) 2022-01-27

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