EP1261074B1 - Waterproof cable strain relief - Google Patents

Waterproof cable strain relief Download PDF

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Publication number
EP1261074B1
EP1261074B1 EP02008426A EP02008426A EP1261074B1 EP 1261074 B1 EP1261074 B1 EP 1261074B1 EP 02008426 A EP02008426 A EP 02008426A EP 02008426 A EP02008426 A EP 02008426A EP 1261074 B1 EP1261074 B1 EP 1261074B1
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EP
European Patent Office
Prior art keywords
cable
seal
relief device
tension relief
laminations
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Revoked
Application number
EP02008426A
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German (de)
French (fr)
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EP1261074A1 (en
Inventor
Johannes Bals
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Bals Elektrotechnik GmbH and Co KG
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Bals Elektrotechnik GmbH and Co KG
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    • 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
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet
    • 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
    • H01R13/5837—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 specially adapted for accommodating various sized cables

Definitions

  • the invention relates to a Strain relief device for a cable in one electrical connector according to the preamble of Claim 1.
  • strain relief of this type is a sleeve with an annular arrangement of Slats are provided which have claws at their ends which are obliquely tangential to the cable jacket are directed.
  • the slats On the inside are the slats from lined with a cuff that is blunt on one annular gradation of the sleeve is present.
  • the slats can be chuck-like from a union nut be pressed together, the cuff at the Cable entry opening pressed onto the cable jacket is so that there is a seal.
  • forms the application of the cuff to the annular gradation of the Sleeve a vulnerability against water ingress.
  • the Strain relief is also only for a certain one Cable diameter disclosed.
  • strain relief (DE 199 00 201 A1) is a cage with a ring wall and a number of Slats with thickened ends are provided.
  • the cage is with the interposition of a sealing ring in one Inserted housing component of the electrical connector.
  • the sealing ring is part of a sealing sleeve that pressed from the thickened ends of the slats to the cable is when a union nut as an annular pressure piece on the housing part of the electrical connector is screwed on.
  • This cable connection device is for designed a certain cable diameter, d. H. cables of different thicknesses cannot be relieved of strain and be sealed.
  • Another strain relief device (DE 195 40 686 C1) includes a cage with a number of slats and claws the ends, and an annular pressure piece for Press the claws together with the cable inserted. There only cables of a certain diameter can be clamped. Furthermore, it is not possible with the strain relief, the interior to seal the housing against the ingress of water.
  • the invention has for its object a Strain relief device using claws too create a waterproof seal for forms the electrical connector.
  • the cage forms around it cables to be sealed around a kind of stiffened, conical Sealing sleeve with two open ends, one end of which surrounds the cable waterproof and the other end with one Housing part of the electrical connector watertight connected is.
  • this sealing sleeve forms that rear end of the housing of the connector, which - often designed as a hood - with the cage in one piece is poured, after which a sealing jacket to the cage is injected.
  • the sealing sleeve is stiffened thus through the lamellae of the cage, which are in radial planes of the cable are arranged, but obliquely to the cable axis run.
  • the drawings show a hood 1, i. H. on rear housing part of an electrical connector, in that leads a cable 2 or 3 into it.
  • the cable contains one Row of electrical lines, not shown, connected to Contact elements (contact pins or contact sockets) must be connected, whereby this connection does not come loose if you pull cable 2 or 3.
  • the device which intercepts this train and thus the connection of the protects the respective line with the contact element generally referred to as strain relief device 10.
  • the strain relief device 10 comprises as main parts a clamping cage 11 and a annular pressure piece 12.
  • the clamping cage 11 has a Ring wall 13, which in the illustrated embodiment is integrally connected to the hood 1, i.e. along with this is injection molded. However, it is also a separate one Manufacturing possible.
  • the watertight connection is important between the ring wall 13 and the housing part 1.
  • ring wall 13 With the ring wall 13 are a ring of ribs or Slats 14 connected in one piece, and that via diluted Wall areas or hinges 15 so that the ribs or Slats 14 when cable 2 or 3 is inserted or at Action by the pressure piece 12 can be pivoted slightly can.
  • Fig. 1 there are between the ribs or lamellae 14 each have narrow spaces 16, which brings the lamellae closer together to their upper one allow free ends.
  • the slats 14 are therefore on the mantle of a truncated cone, the large diameter of the ring wall 13 and its small diameter from the Position of the pressure piece 12 depends.
  • On the inside each lamella 14 has a claw 17 which is intended into the sheath of the respectively inserted cable 2 or 3 penetrate when this is clamped.
  • Sealing sleeve in the form of a rib-reinforced frustoconical sealing jacket 20 provided from an elastomeric sealing material, for example malleable rubber.
  • the sealing jacket 20 has at its in the Drawing upper end of a cable entry opening 21, which is surrounded by a thickened annular bead 29, which is like a sphincter around cable 2 or 3, but one Includes chamfer for the cable end, so this inserted into the opening 21 formed by the annular bead 29 can be.
  • the sealing jacket 20 covers the gaps 16 between the slats 14 and is with its lower annular end 22 securely attached to the ring wall 13.
  • clamping cage 11 in two steps is produced, namely in the first step the housing part 1 together with the ring wall 13 and the Slats 14 are formed and in a second step the Injection molded sealing jacket 20 so that, for example, a one piece cast hood that creates both the Sealing function as well as the strain relief function for the Plug device takes over.
  • the annular pressure piece 12 is shown in the Embodiment designed as a union nut, which in Thread 18 engages on the outside of the ring wall 13 and for this purpose has an internal thread 19.
  • the threads 18 and 19 can be designed as a so-called ratchet thread, i.e. ratchet teeth are on at least one of these threads provided that the loosening of the union nut prevent when it is tightened.
  • the annular pressure piece 12 has a conical Printing surface 25 and adjacent to this a round opening 26 on with the sloping outer sides 27 and the Work the apex surfaces 28 of the fins 14 together.
  • Fig. 3 slides the lower edge the opening 26 like a cam on the inclined surfaces 27 when the pressure piece is screwed down in the drawing, whereby the upper cone opening 21 is reduced and the Claws 17 penetrate into the cable sheath.
  • Fig. 2 slide Vertex surfaces 28 of the fins 14 along the conical surface 25.
  • the opening mouth of the Clamping cage also reduced and the claws 17 penetrate into the cable jacket.
  • fulfills the function of strain relief because the claws 17th hold the cable when pulling it.
  • Electrical connectors are available in different size classes for different Size ranges of the cable diameter. Accordingly provided for each size class of electrical Plug device each a suitable strain relief device to provide, each with a specific Range is covered by cable diameter.

Abstract

The electrical cable (2) passes through a housing part (1) that is cylindrical and has an end section having a ring of angled radial claws (14). The inner surface is coated with a sealing material (20). When an end cap (12) is threaded onto the housing the claws are forced radially inwards to grip the cable and also provide a seal.

Description

Die Erfindung bezieht sich auf eine Zugentlastungsvorrichtung für ein Kabel in einer elektrischen Steckvorrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a Strain relief device for a cable in one electrical connector according to the preamble of Claim 1.

Bei einer Zugentlastung dieser Art (DE 200 10 394 U1) ist eine Hülse mit einer ringförmigen Anordnung von Lamellen vorgesehen, die an ihren Enden mit Klauen versehen sind, welche schräg-tangential auf den Kabelmantel gerichtet sind. Auf der Innenseite sind die Lamellen von einer Manschette ausgekleidet, die stumpf an einer ringförmigen Abstufung der Hülse anliegt. Die Lamellen können spannfutterartig von einer Überwurfmutter zusammengepresst werden, wobei die Manschette bei der Kabeldurchführungsöffnung auf den Kabelmantel gepresst wird, so dass dort eine Abdichtung erfolgt. Jedoch bildet die Anlage der Manschette an der ringförmigen Abstufung der Hülse eine Schwachstelle gegen eindringendes Wasser. Die Zugentlastung ist ferner nur für einen bestimmten Kabeldurchmesser offenbart.With strain relief of this type (DE 200 10 394 U1) is a sleeve with an annular arrangement of Slats are provided which have claws at their ends which are obliquely tangential to the cable jacket are directed. On the inside are the slats from lined with a cuff that is blunt on one annular gradation of the sleeve is present. The slats can be chuck-like from a union nut be pressed together, the cuff at the Cable entry opening pressed onto the cable jacket is so that there is a seal. However forms the application of the cuff to the annular gradation of the Sleeve a vulnerability against water ingress. The Strain relief is also only for a certain one Cable diameter disclosed.

Bei einer weiteren Zugentlastung (DE 199 00 201 A1) ist ein Käfig mit einer Ringwand und einer Anzahl von Lamellen mit verdickten Enden vorgesehen. Der Käfig ist unter Zwischenfügung eines Dichtungsrings in ein Gehäusebauteil der elektrischen Steckvorrichtung eingefügt. Der Dichtungsring ist Teil einer Dichtungsmanschette, die von den verdickten Enden der Lamellen an das Kabel gepresst wird, wenn eine Überwurfmutter als ringförmiges Druckstück auf das Gehäuseteil der elektrischen Steckvorrichtung aufgeschraubt wird. Diese Kabelanschlussvorrichtung ist für einen bestimmten Kabeldurchmesser ausgelegt, d. h. unterschiedlich dicke Kabel können nicht zugentlastet und abgedichtet werden. Eine weitere Zugentlastungsvorrichtung (DE 195 40 686 C1) umfasst einen Käfig mit einer Anzahl Lamellen und Klauen an deren Enden, sowie ein ringförmiges Druckstück zum Zusammenpressen der Klauen bei zwischengefügtem Kabel. Dabei können nur Kabel eines bestimmten Durchmessers geklemmt werden. Ferner ist es mit der Zugentlastung nicht möglich, das Innere des Gehäuses gegenüber eindringendem Wasser abzudichten.With another strain relief (DE 199 00 201 A1) is a cage with a ring wall and a number of Slats with thickened ends are provided. The cage is with the interposition of a sealing ring in one Inserted housing component of the electrical connector. The sealing ring is part of a sealing sleeve that pressed from the thickened ends of the slats to the cable is when a union nut as an annular pressure piece on the housing part of the electrical connector is screwed on. This cable connection device is for designed a certain cable diameter, d. H. cables of different thicknesses cannot be relieved of strain and be sealed. Another strain relief device (DE 195 40 686 C1) includes a cage with a number of slats and claws the ends, and an annular pressure piece for Press the claws together with the cable inserted. there only cables of a certain diameter can be clamped. Furthermore, it is not possible with the strain relief, the interior to seal the housing against the ingress of water.

Bei einer weiteren bekannten Zugentlastungsvorrichtung (EP 0 921 604 A1) wird das Kabel von einem Klemmkäfig umgeben, der mit einzelnen Klemmbacken ausgebildet ist, die mit Schrägflächen versehen sind, und eine Überwurfmutter drängt den Klemmkäfig mit seinen Schrägflächen in Anlage an jeweilige Schrägnuten einer Ringwand, die Teil des Gehäuses der Steckvorrichtung ist. Auch hier erfolgt keine Abdichtung des hindurchgeführten geklemmten Kabels.In another known strain relief device (EP 0 921 604 A1) the cable is surrounded by a clamping cage, the trained with individual jaws which are provided with inclined surfaces, and a Union nut pushes the clamping cage with its inclined surfaces in contact with respective oblique grooves of a ring wall, the part the housing of the connector. This is also done here no sealing of the clamped cable passed through.

Inzwischen ist eine elektrische Steckvorrichtung bekannt geworden (DE 100 11 341 A1), bei der ein Käfig mit einer Anzahl Lamellen und abgestuften Klauen an deren Enden in eine Käfigaufnahme mittels einer Knebelmutter gepresst wird. Dabei wird auch eine Dichthülse auf den Käfig und das zwischengefügte Kabel gepresst. Die Stufen an den Klauen sind frei von der Dichthülse und ermöglichen, unterschiedliche Kabeldurchmesser zu greifen.In the meantime there is an electrical connector become known (DE 100 11 341 A1), in which a cage with a number of slats and stepped claws at their ends pressed into a cage holder using a gag nut becomes. There is also a sealing sleeve on the cage and that Intermediate cables pressed. The steps on the claws are free from the sealing sleeve and allow different Gripping cable diameter.

Der Erfindung liegt die Aufgabe zugrunde, eine Zugentlastungsvorrichtung unter Anwendung von Klauen zu schaffen, die gleichzeitig eine wasserdichte Abdichtung für die elektrische Steckvorrichtung bildet.The invention has for its object a Strain relief device using claws too create a waterproof seal for forms the electrical connector.

Die gestellte Aufgabe wird aufgrund der Merkmale des Anspruches 1 gelöst und durch die weiteren Merkmale der abhängigen Ansprüche ausgestaltet und weiterentwickelt.The task is based on the characteristics of claim 1 and solved by the further features of dependent claims designed and developed.

Bei der Erfindung bildet der Käfig um das abzudichtende Kabel herum eine Art versteifter, konischer Dichtmanschette mit zwei offenen Enden, wovon das eine Ende das Kabel wasserdicht umgibt und das andere Ende mit einem Gehäuseteil der elektrischen Steckvorrichtung wasserdicht verbunden ist. Praktisch bildet diese Dichtmanschette das hintere Ende des Gehäuses der Steckvorrichtung, die - häufig als Haube ausgebildet - mit dem Käfig aus einem Stück gegossen wird, wonach ein Dichtungsmantel an den Käfig angespritzt wird. Die Versteifung der Dichtmanschette erfolgt somit durch die Lamellen des Käfigs, die in radialen Ebenen des Kabels angeordnet sind, jedoch schräg zur Kabelachse verlaufen. Diese Rippen oder Lamellen weisen zur Kabeldurchführungsöffnung hin gerichtete Klauen auf, die es ermöglichen, das Kabel bei größerem oder kleinerem Kabeldurchmesser festzuklemmen, wenn ein Druckstück, z. B. eine Überwurfmutter, auf die schräg verlaufenden Lamellen einwirkt. Gleichzeitig sorgt die Manschette für Abdichtung des geklemmten Kabels.In the invention, the cage forms around it cables to be sealed around a kind of stiffened, conical Sealing sleeve with two open ends, one end of which surrounds the cable waterproof and the other end with one Housing part of the electrical connector watertight connected is. In practice, this sealing sleeve forms that rear end of the housing of the connector, which - often designed as a hood - with the cage in one piece is poured, after which a sealing jacket to the cage is injected. The sealing sleeve is stiffened thus through the lamellae of the cage, which are in radial planes of the cable are arranged, but obliquely to the cable axis run. These ribs or fins point to Cable entry opening facing claws on it allow the cable to be larger or smaller To clamp the cable diameter if a pressure piece, z. B. a union nut on the sloping Slats acts. At the same time, the cuff ensures Sealing the clamped cable.

Die Erfindung wird anhand der Zeichnung beschrieben'. Dabei zeigt:

Fig. 1
eine Ansicht von oben auf die Zugentlastungsvorrichtung, Teile weggebrochen,
Fig. 2
einen Schnitt entlang der Linie AB in Fig. 1 mit einem abgedichteten Kabel relativ großen Durchmessers, und
Fig. 3
einen Längsschnitt bei einem Kabel mit relativ kleinem Durchmesser.
The invention is described with reference to the drawing. It shows:
Fig. 1
a top view of the strain relief device, parts broken away,
Fig. 2
a section along the line AB in Fig. 1 with a sealed cable of relatively large diameter, and
Fig. 3
a longitudinal section of a cable with a relatively small diameter.

Die Zeichnungen zeigen eine Haube 1, d. h. ein hinteres Gehäuseteil einer elektrischen Steckvorrichtung, in das ein Kabel 2 bzw. 3 hineinführt. Das Kabel enthält eine Reihe von nicht dargestellten elektrischen Leitungen, die an Kontaktelemente (Kontaktstifte oder Kontaktbuchsen) anzuschließen sind, wobei sich dieser Anschluss nicht lösen soll, wenn man am Kabel 2 oder 3 zieht. Die Vorrichtung, welche diesen Zug abfängt und damit die Verbindung der jeweiligen Leitung mit dem Kontaktelement schützt, wird generell als Zugentlastungsvorrichtung 10 bezeichnet.The drawings show a hood 1, i. H. on rear housing part of an electrical connector, in that leads a cable 2 or 3 into it. The cable contains one Row of electrical lines, not shown, connected to Contact elements (contact pins or contact sockets) must be connected, whereby this connection does not come loose if you pull cable 2 or 3. The device, which intercepts this train and thus the connection of the protects the respective line with the contact element generally referred to as strain relief device 10.

Die Zugentlastungsvorrichtung 10 umfasst als hauptsächlichste Teile einen Klemmkäfig 11 und ein ringförmiges Druckstück 12. Der Klemmkäfig 11 weist eine Ringwand 13 auf, die im dargestellten Ausführungsbeispiel einstückig mit der Haube 1 verbunden ist, d.h. zusammen mit dieser spritzgegossen wird. Es ist jedoch auch eine getrennte Herstellung möglich. Wichtig ist die wasserdichte Verbindung zwischen der Ringwand 13 und dem Gehäuseteil 1.The strain relief device 10 comprises as main parts a clamping cage 11 and a annular pressure piece 12. The clamping cage 11 has a Ring wall 13, which in the illustrated embodiment is integrally connected to the hood 1, i.e. along with this is injection molded. However, it is also a separate one Manufacturing possible. The watertight connection is important between the ring wall 13 and the housing part 1.

Mit der Ringwand 13 sind ein Kranz von Rippen oder Lamellen 14 einstückig verbunden, und zwar über verdünnte Wandbereiche oder Scharniere 15,so dass die Rippen oder Lamellen 14 bei Einführung des Kabels 2 bzw. 3 oder bei Einwirkung durch das Druckstück 12 leicht geschwenkt werden können. Wie aus Fig. 1 ersichtlich, befinden sich zwischen den Rippen oder Lamellen 14 jeweils schmale Zwischenräume 16, welche eine Annäherung der Lamellen zueinander an ihre oberen freien Enden ermöglichen. Die Lamellen 14 liegen demnach auf dem Mantel eines Kegelstumpfes, dessen großer Durchmesser von der Ringwand 13 und dessen kleiner Durchmesser von der Stellung des Druckstückes 12 abhängt. Auf der Innenseite jeder Lamelle 14 sitzt eine Kralle 17, die dazu bestimmt ist, in den Mantel des jeweilig eingeführten Kabels 2 bzw. 3 einzudringen, wenn dieses festgeklemmt wird.With the ring wall 13 are a ring of ribs or Slats 14 connected in one piece, and that via diluted Wall areas or hinges 15 so that the ribs or Slats 14 when cable 2 or 3 is inserted or at Action by the pressure piece 12 can be pivoted slightly can. As can be seen from Fig. 1, there are between the ribs or lamellae 14 each have narrow spaces 16, which brings the lamellae closer together to their upper one allow free ends. The slats 14 are therefore on the mantle of a truncated cone, the large diameter of the ring wall 13 and its small diameter from the Position of the pressure piece 12 depends. On the inside each lamella 14 has a claw 17 which is intended into the sheath of the respectively inserted cable 2 or 3 penetrate when this is clamped.

Wegen der schlitzförmigen Räume 16 zwischen den Lamellen 14 ist der Klemmkäfig 11 nicht in der Lage, das Kabel 2 bzw. 3 abzudichten. Erfindungsgemäß ist eine Dichtmanschette in Form eines rippenverstärkten kegelstumpfförmigen Dichtungsmantels 20 vorgesehen, der aus einem elastomeren Dichtungsmaterial, beispielsweise anformbarem Gummi besteht.Because of the slit-shaped spaces 16 between the Slats 14, the clamping cage 11 is not able to Seal cable 2 or 3. According to the invention Sealing sleeve in the form of a rib-reinforced frustoconical sealing jacket 20 provided from an elastomeric sealing material, for example malleable rubber.

Der Dichtungsmantel 20 weist an seinem in der Zeichnung oberen Ende eine Kabeldurchführungsöffnung 21 auf, die von einem verdickten Ringwulst 29 umgeben wird, der sich wie ein Schließmuskel um das Kabel 2 bzw. 3 legt, jedoch eine Einführungsschräge für das Kabelende aufweist, damit dieses in die vom Ringwulst 29 gebildete Öffnung 21 eingeführt werden kann. Der Dichtungsmantel 20 überdeckt die Lücken 16 zwischen den Lamellen 14 und ist mit seinem unteren ringförmigen Ende 22 sicher an der Ringwand 13 befestigt. In der Praxis geschieht dies dadurch, dass der Klemmkäfig 11 in zwei Schritten hergestellt wird, nämlich im ersten Schritt werden das Gehäuseteil 1 zusammen mit der Ringwand 13 und den Lamellen 14 geformt und in einem zweiten Schritt wird der Dichtungsmantel 20 angespritzt, so dass beispielsweise eine aus einem Stück gegossene Haube entsteht, die sowohl die Dichtfunktion als auch die Zugentlastungsfunktion für die Steckvorrichtung übernimmt.The sealing jacket 20 has at its in the Drawing upper end of a cable entry opening 21, which is surrounded by a thickened annular bead 29, which is like a sphincter around cable 2 or 3, but one Includes chamfer for the cable end, so this inserted into the opening 21 formed by the annular bead 29 can be. The sealing jacket 20 covers the gaps 16 between the slats 14 and is with its lower annular end 22 securely attached to the ring wall 13. In In practice, this is done in that the clamping cage 11 in two steps is produced, namely in the first step the housing part 1 together with the ring wall 13 and the Slats 14 are formed and in a second step the Injection molded sealing jacket 20 so that, for example, a one piece cast hood that creates both the Sealing function as well as the strain relief function for the Plug device takes over.

Das ringförmige Druckstück 12 ist im dargestellten Ausführungsbeispiel als Überwurfmutter ausgebildet, die im Gewinde 18 an der Außenseite der Ringwand 13 eingreift und hierzu ein Innengewinde 19 besitzt. Die Gewinde 18 und 19 können als sogenanntes Ratschengewinde ausgebildet sein, d.h. an wenigstens einem dieser Gewinde sind Sperrzähne vorgesehen, welche das Lockerwerden der Überwurfmutter verhindern, wenn diese angezogen ist.The annular pressure piece 12 is shown in the Embodiment designed as a union nut, which in Thread 18 engages on the outside of the ring wall 13 and for this purpose has an internal thread 19. The threads 18 and 19 can be designed as a so-called ratchet thread, i.e. ratchet teeth are on at least one of these threads provided that the loosening of the union nut prevent when it is tightened.

Das ringförmige Druckstück 12 weist eine konische Druckfläche 25 und angrenzend zu dieser eine runde Öffnung 26 auf, die mit den schrägen Außenseiten 27 bzw. den Scheitelflächen 28 der Lamellen 14 zusammenarbeiten. Bei kleinem Kabeldurchmesser (Fig. 3) gleitet die untere Kante der Öffnung 26 wie ein Nocken auf den Schrägflächen 27, wenn das Druckstück in der Zeichnung nach unten verschraubt wird, wodurch sich die obere Konusöffnung 21 verkleinert und die Krallen 17 in den Kabelmantel eindringen. Wenn ein Kabel mit großem Querschnitt eingeführt wird (Fig. 2), gleiten die Scheitelflächen 28 der Lamellen 14 entlang der Konusfläche 25. Beim Anziehen der Mutter 12 wird das Öffnungsmaul des Klemmkäfigs ebenfalls verkleinert und die Krallen 17 dringen in den Kabelmantel ein. In jedem Fall wird aber eine abdichtende Anlage des Ringwulstes 29 an dem Kabelmantel erzielt, wobei es keine Stelle entlang des Klemmkäfigs gibt, an der die Abdichtung unterbrochen wäre. Gleichzeitig wird die Funktion der Zugentlastung erfüllt, weil die Krallen 17 das Kabel festhalten, wenn an diesem gezogen wird.The annular pressure piece 12 has a conical Printing surface 25 and adjacent to this a round opening 26 on with the sloping outer sides 27 and the Work the apex surfaces 28 of the fins 14 together. at small cable diameter (Fig. 3) slides the lower edge the opening 26 like a cam on the inclined surfaces 27 when the pressure piece is screwed down in the drawing, whereby the upper cone opening 21 is reduced and the Claws 17 penetrate into the cable sheath. If a cable with large cross section is introduced (Fig. 2), slide Vertex surfaces 28 of the fins 14 along the conical surface 25. When tightening the nut 12, the opening mouth of the Clamping cage also reduced and the claws 17 penetrate into the cable jacket. In any case, however sealing contact of the annular bead 29 on the cable jacket achieved, there is no place along the clamping cage, where the seal would be broken. At the same time fulfills the function of strain relief because the claws 17th hold the cable when pulling it.

Elektrische Steckvorrichtungen gibt es in unterschiedlichen Größenklassen für unterschiedliche Größenbereiche des Kabeldurchmessers. Demgemäß ist vorgesehen, für jede Größenklasse der elektrischen Steckvorrichtung jeweils eine passende Zugentlastungsvorrichtung vorzusehen, mit denen jeweils ein bestimmter Bereich von Kabeldurchmesser abgedeckt wird.Electrical connectors are available in different size classes for different Size ranges of the cable diameter. Accordingly provided for each size class of electrical Plug device each a suitable strain relief device to provide, each with a specific Range is covered by cable diameter.

Claims (10)

  1. A tension relief device for a cable in an electric plug-in device, having the following features:
    a housing part (1) of the electric plug-in device, through which the cable (2, 3) extends;
    a cage (11) with an annular wall (13) and a number of laminations (14) which are articulated on the annular wall and between which there are gaps (16) in slot form;
    a seal (20) which consists of elastic sealing material and which in the form of a cable bushing opening (21) surrounds the cable (2, 3) and seals off the housing part (1);
    an annular pressure member (12) for abutment against outsides (27) of the laminations (14) in order to press the seal (20) against the cable (2, 3);
    the seal (20) is arranged to seal off the laminations (14) and follow the movement thereof;
    the laminations (14) extend in operation generally obliquely to the axis of the annular wall (13) and in the region of the cable bushing opening (21) have claws (17) which as a result of the action of the pressure member (12) can be pressed against the outsides (27) of the laminations (14) against the outer surface of a cable;
    characterised in that
    the laminations (14) are disposed with their outsides (27) on the outer surface of a truncated cone, at the smaller base of which the laminations (14) are rounded off to form apical surfaces (28), while thinned wall zones are provided at the larger truncated cone base in order for it to form hinges (15) which are integrally connected to the annular wall (13),
    and in that the annular end (22) of the seal (20) near the truncated cone base axially overlaps a part of the annular wall (13) and is sealingly connected thereto, while the cable bushing opening (21) is of variable size in order to accommodate thicker (2) or thinner (3) cables.
  2. A tension relief device according to claim 1, characterised in that the annular wall (13) of the cage (11) forms an integral portion of the housing part (1) of the electric plug-in device.
  3. A tension relief device according to claim 1 or 2, characterised in that the cage (11) has been made in a first process step and the seal (20) has been injection moulded on the cage (11) in a second process step.
  4. A tension relief device according to claim 3, characterised in that the sealing material consists of an elastomer which can be integrally moulded in the two-component injection process.
  5. A tension relief device according to any one of claims 1 to 4, characterised in that the seal (20) is constructed in the form of a frusto-conical jacket with a thickened edge (29) at the cable bushing opening (21).
  6. A tension relief device according to claim 5, characterised in that the claws (17) of the laminations (14) are constructed as pointed claws which extend radially towards the cable surface so as to be able to penetrate thereinto and are disposed near the thickened edge (29) of the seal (20).
  7. A tension relief device according to any one of claims 4 to 6, characterised in that the thickened edge (29) of the seal (20) constitutes the sole abutment sealing point of the seal (20).
  8. A tension relief device according to any one of claims 1 to 7, characterised in that the annular pressure member (12) is constructed as a cap nut and co-operates with a screwthread (18) formed on the outside of the annular wall (13) of the cage (11).
  9. A tension relief device according to claim 8, characterised in that the screwthread (19) of the cap nut and/or the screwthread (18) on the outside of the annular wall (13) is/are provided with locking teeth to prevent unwanted unturning and loosening of the cap nut.
  10. A tension relief device according to claim 9, characterised in that the housing component (1) of the electric plug-in device constitutes a hood (1) of which the tension relief device forms an integral part of an electric plug-in device.
EP02008426A 2001-05-25 2002-04-12 Waterproof cable strain relief Revoked EP1261074B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20108775U 2001-05-25
DE20108775U DE20108775U1 (en) 2001-05-25 2001-05-25 Waterproof cable strain relief

Publications (2)

Publication Number Publication Date
EP1261074A1 EP1261074A1 (en) 2002-11-27
EP1261074B1 true EP1261074B1 (en) 2004-08-11

Family

ID=7957328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02008426A Revoked EP1261074B1 (en) 2001-05-25 2002-04-12 Waterproof cable strain relief

Country Status (6)

Country Link
EP (1) EP1261074B1 (en)
AT (1) ATE273573T1 (en)
DE (3) DE20108775U1 (en)
DK (1) DK1261074T3 (en)
ES (1) ES2222416T3 (en)
PT (1) PT1261074E (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005014373B3 (en) 2005-03-23 2006-08-24 Walther-Werke Ferdinand Walther Gmbh Housing for an electric plug having a sealing element formed from two seals and a connector
DE102009041868B3 (en) 2009-09-16 2011-04-07 Harting Electronics Gmbh & Co. Kg Connector housing with integrated cable clamp
DE102011055509B4 (en) * 2011-11-18 2017-09-07 Phoenix Contact Gmbh & Co. Kg Connectors
CN113140930A (en) * 2015-06-30 2021-07-20 康普技术有限责任公司 Guard for radio frequency connector
DE102021134332A1 (en) 2021-12-22 2023-06-22 Reichle + De-Massari Ag Object sleeve device, object sleeve, method for assembling an object sleeve device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8400007U1 (en) * 1984-01-02 1984-03-29 Olbrich, Knut, Dipl.-Kfm., 7000 Stuttgart Electrical connector
DE9000964U1 (en) * 1990-01-29 1990-04-05 Coninvers Elektronische Bauelemente Gmbh, 7033 Herrenberg, De
DE29711253U1 (en) * 1997-06-27 1998-07-30 Siemens Ag Device for contacting the braid of an electrical cable with an adapted connector and snap-on cover cap
DE19900201C2 (en) * 1998-11-10 2003-12-24 Phoenix Contact Gmbh & Co Cable connection or connection device
DE10011341C2 (en) * 2000-03-10 2002-03-07 Aloys Mennekes Anlagengmbh & C Electrical connector
GB2363007B (en) * 2000-06-01 2004-03-24 Avc Ind Corp Cable fastener

Also Published As

Publication number Publication date
ATE273573T1 (en) 2004-08-15
DE20108775U1 (en) 2002-10-10
DK1261074T3 (en) 2004-11-22
EP1261074A1 (en) 2002-11-27
DE10222811A1 (en) 2002-11-28
ES2222416T3 (en) 2005-02-01
DE50200782D1 (en) 2004-09-16
PT1261074E (en) 2004-11-30

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