EP2099101B1 - Plug device with torsion relief - Google Patents

Plug device with torsion relief Download PDF

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Publication number
EP2099101B1
EP2099101B1 EP09152081.7A EP09152081A EP2099101B1 EP 2099101 B1 EP2099101 B1 EP 2099101B1 EP 09152081 A EP09152081 A EP 09152081A EP 2099101 B1 EP2099101 B1 EP 2099101B1
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EP
European Patent Office
Prior art keywords
plug device
clamping
basket
plug
tongues
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EP09152081.7A
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German (de)
French (fr)
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EP2099101A1 (en
Inventor
Stefan Gattwinkel
Wolfgang Beckmann
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Amad Mennekes Holding GmbH and Co KG
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Amad Mennekes Holding GmbH and Co KG
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Publication of EP2099101A1 publication Critical patent/EP2099101A1/en
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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
    • H01R13/58—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
    • H01R13/59—Threaded ferrule or bolt operating in a direction parallel to the cable or wire

Definitions

  • the invention relates to a plug-in device with strain relief comprising a plug-in device housing and a clamping cage with radially movable clamping tongues. Furthermore, it relates to a terminal basket for such a plug-in device.
  • a plug-in device of the type described above is for example from the DE 100 11 341 C2 known.
  • This plug-in device comprises a plug device housing and a clamping cage with an annular support wall and axially extending clamping tongues thereof.
  • the clamping tongues can be pressed radially inwards and thereby press against a guided through the clamping basket cable.
  • the compression of the clamping tongues is achieved by screwing a rotary sleeve to the connector housing, which axially displaces the clamping basket and thereby presses the clamping tongues against conical shoulders of the connector housing.
  • a substantially cylindrical, elastic sealing collar is also arranged loosely or firmly molded in the interior of the clamping basket.
  • the plug-in device described allows the fixing of the clamping cage of the strain relief to a cable by the rotation of a rotary sleeve, wherein the rotary sleeve advantageously does not change its axial position relative to the connector housing. Instead, axial displacements only take place inside the mechanism, where they are protected from external influences. There is therefore no gap of variable width between the rotating sleeve and the plug-in housing, which could contaminate or pinch objects or the fingers of a user. Last but not least, the visual appearance of the plug-in device is improved, since it looks the same externally for each clamping state of the clamping basket or cable diameter.
  • the axially movably mounted body which cooperates with the inner structure of the rotary sleeve, may in particular be the clamping basket itself.
  • the rotary sleeve and the clamping cage no further component is required to achieve the desired clamping effect.
  • the clamping cage is preferably sealed and mounted against rotation on the connector housing.
  • a sealing of the clamping basket relative to the plug-in housing prevents moisture and / or dirt from penetrating into the interior of the plug-in device between these two components.
  • the anti-rotation ensures that the clamping basket can not be dragged by a rotary movement of the rotating sleeve.
  • the rotation can be effected for example by axially extending ribs on the connector housing and / or clamping basket.
  • the outer surfaces of the clamping tongues can interact with the plug-in device housing and / or with the rotary sleeve during an axial displacement movement of the clamping basket.
  • the clamping tongues can become For example, supported over obliquely to the (cable) axis extending contact surfaces on a shoulder of the connector housing and thereby be moved radially in an axial displacement of the clamping basket.
  • the axially movably mounted body which cooperates with the inner structure of the rotary sleeve, may be a separate crimp ring in a second implementation of the invention.
  • the squeezing ring can in turn act on the clamping basket in various ways during its axial movement. In the simplest case, it exerts pressure directly in the radial direction on inclined outer surfaces of the clamping tongues.
  • An advantage of using a separate squeezing ring is that the clamping cage can stand at a fixed axial position, so that there is no relative movement between the clamping cage and cable to be attached.
  • the clamping basket may in particular be formed integrally with the plug device housing, so that a loose part is less required for the strain relief and the transition from terminal basket to plug housing by construction is tight.
  • the clamping basket can also be a separate, attachable to the connector housing part.
  • the connector housing may have a thread or a bayonet approach, on which the clamping cage with a complementary structure can be fastened.
  • a separate clamping basket has the advantage that it can be easily replaced when damaged and that different embodiments of clamping baskets and connector housings can be combined.
  • the inner structure of the rotary sleeve which cooperates with the axially displaceably movably mounted body, may in particular be an internal thread. This can then cooperate with a complementary external thread (in the above embodiments on the clamping cage or pinch ring) to move the associated body axially.
  • the plug-in device may optionally have an elastic sealing sleeve to be arranged in the interior of the clamping basket.
  • the sealing collar is then pressed firmly against the jacket of the cable from all sides, so that nothing can penetrate between the cable and the sealing collar.
  • Said sealing collar is preferably connected in the assembled state of the plug-in device sealingly with the plug device housing and / or with an annular support wall of the clamping basket. In this way, the cable is a total of tightly inserted into the plug-in device or in the terminal box.
  • a sealing connection of the sealing sleeve to the plug device housing or to the support wall of the clamping basket can be done by mechanical pressing, preferably by cohesive connection.
  • the sealing collar can be molded directly onto the corresponding part during production.
  • the rotary sleeve is optionally sealed against the connector housing to protect the internal mechanism of the strain relief from the ingress of dirt and / or moisture.
  • Such a seal is relatively easy to implement, since between rotary sleeve and plug housing only a relative rotation (without axial displacement) is possible.
  • the rotary sleeve may have an insertion funnel for a cable in order to facilitate its threading into the clamping basket and passage to the plug-in device.
  • the invention relates to a clamping basket for the strain relief of a plug-in device, in particular for a plug-in device according to one of the embodiments described above.
  • the clamping basket is intended to have an annular (in cross-section, for example, cylindrical or polygonal) carrier wall with clamping tongues extending axially therefrom. It is characterized in that at least a part of the outer surfaces of the clamping tongues lies on the jacket of a truncated cone whose larger radius is closer to the free ends of the clamping tongues than its smaller radius.
  • the outer sides of the clamping tongues extend obliquely radially outward in relation to the axial direction.
  • An annular body e.g., a shoulder of the connector housing or a crimp ring of the type described above acting on the described exterior surfaces of the clamp basket may cause radially inward compression of the clamp tongues as it moves axially away from the support wall.
  • the clamping tongues are advantageously loaded with respect to the support wall in the axial direction to train - and not compressed as in known clamping baskets in the direction of the support wall.
  • a further part of the outer surfaces of the clamping tongues may lie on the jacket of a second truncated cone whose smaller radius is closer to the free ends of the clamping tongues than its larger radius.
  • a second conical active surface is provided, via which alternatively in a conventional manner (by compression pressure), a compression of the clamping tongues can be effected.
  • the clamping tongues of the clamping basket preferably have a substantially triangular cross section in the radial direction.
  • the clamping tongues obtain a high stability. Especially when grasping very thin cable diameter such stability is advantageous because it prevents bending or twisting to weak terminal tongues.
  • the support wall of the clamping basket may optionally have an internal thread and / or an external thread.
  • the clamping cage can thus be screwed to a plug-in device housing, for example.
  • the thread also cooperate with the internal thread of a rotary sleeve in the above-described plug-in device to move the clamping cage axially.
  • the rotary sleeve 120 has an internal structure which cooperates with the clamp basket 130 so as to move axially when the rotary sleeve 120 is rotated.
  • the inner structure is exemplified as an internal thread 121 which cooperates with an external thread 134 on the support wall 132 of the clamping basket 130.
  • a mechanism is provided, with which the axial displacement of the clamping basket 130 is converted into a radial movement of the clamping tongues 131.
  • This can be achieved by the outer surfaces 133 of the clamping tongues 131 extend obliquely to the axial direction A; by cooperation with an annular shoulder 112 on the connector housing (or alternatively on the rotary sleeve 120), they can then be pressed radially inwardly.
  • an annular shoulder 112 on the connector housing or alternatively on the rotary sleeve 120
  • FIG. 2 shows the specific embodiment of a plug-in device 200 according to the first design principle described above. Of the plug-in device 200, in turn, only the rear end of the housing 210 (usually referred to as "hood") is shown.
  • the connector housing 210 terminates in a cylinder wall 213, which merges at shoulders 212 in a conically widening area.
  • a rotary sleeve 220 is rotatably supported on the cylinder wall 213 about the axis A.
  • the rotary sleeve 220 is fixed by the support on two flanges 211 a and 211 b of the housing 210.
  • the fixation against an upward axial withdrawal movement takes place via latching hooks 222, which can dodge elastically radially outward during assembly of the rotary sleeve 220.
  • an annular seal 261 is provided between the rotary sleeve 220 and the plug housing 210 to prevent the ingress of dirt and moisture into the interior of the mechanism.
  • the rotary sleeve 220 On its inside, the rotary sleeve 220 carries an internal thread 221. Further, a funnel-shaped indentation 224 is provided at the upper end of the rotary sleeve 220, which surrounds said internal thread 221 at a distance. The indentation 224 facilitates the insertion of a cable (not shown).
  • a clamping cage 230 mounted so as to be displaceable in the axial direction but secured against rotation is recognizable by an annular carrier wall 232 (arranged at the top in the figure), from which clamping tongues 231 extend axially downwardly.
  • the support wall 232 has an external thread 234, which engages in the internal thread 221 of the rotary sleeve 220.
  • the clamping cage 230 is thus moved upward in the axial direction or downward depending on the direction of rotation.
  • a ring seal 262 between support wall 232 and the cylinder wall 213 of the connector housing ensures in all axial positions for a seal between these two components.
  • the clamping tongues 231 have a substantially triangular radial cross-section with sliding surfaces 233 extending obliquely to the axis A. These sliding surfaces 233 cooperate with the shoulder 212 of the plug-in housing such that upon an upward axial movement of the clamping basket 230, the clamping tongues 231 extend radially inwards of a cable being carried. Gripping teeth inside at the free end of the clamping tongues 231 can thereby dig into the jacket of such a cable to fix this mechanically well.
  • FIG. 2 an elastic, sleeve-shaped sealing collar 250 can be seen, which is arranged in the interior of the clamping basket 230 and extends substantially from the free end of the clamping tongues 231 to the support wall 232.
  • the upper end of the sealing collar 250 is preferably sealingly connected to the interior of the support wall 232, for example by material bonding by injection molding in a two-component injection molding process.
  • the rotary sleeve has an internal structure such. B. an internal thread 321 which cooperates with a complementary structure (eg., An external thread 341) on the squeezing ring 340 to move the squeezing ring during rotation of the rotary sleeve 320 axially.
  • a complementary structure eg., An external thread 341
  • a radially inwardly directed force can be exerted on the oblique outer surfaces 333 of the clamping tongues 331 of the clamping basket in order to press them against a cable.
  • the radial compression of the clamping tongues 331 may be connected with a compression of the clamping tongues 331 in the direction of the support wall 332 or with a train away from the support wall ( FIG. 3 shows the case of a compression).
  • the second design variant according to FIG. 3 has the advantage that the clamping cage 330 can be fixed relative to the plug-in housing 310. This prevents relative movement between the clamping cage and cable and facilitates a secure seal to the connector housing.
  • FIG. 4 shows a concrete embodiment of the strain relief of a plug-in device 400 according to the general design principle of FIG. 3 ,
  • the connector housing 410 terminates in a cylindrical piece 413. This is provided with an external thread 414, on which the annular support wall 432 of the clamping basket 430 is screwed with a complementary internal thread 434.
  • the clamping basket 430 is fixedly connected to the housing 410 in this way.
  • the clamping tongues 431 of the clamping basket 430 extend away from the plug-in device (in FIG FIG. 4 up).
  • the cross sections of the claws 431 above their articulation points are in turn essentially triangular with two outer surfaces 433 which are inclined with respect to the axial direction A.
  • a rotary sleeve 420 is rotatably mounted at the end of the connector housing 410.
  • the rotary sleeve 420 is supported on a collar 411 of the plug-in device housing 410. At an axial withdrawal movement, it is prevented by latching hooks 422, which engage behind a radially projecting flange 435 of the clamping basket.
  • the rotary sleeve 420 On its inner wall, the rotary sleeve 420 carries an internal thread 421, and the upper end of the rotary sleeve 420 has an indentation as a cable insertion funnel 424.
  • a separate crimp ring 440 is provided with an external thread 441, which engages in the internal thread 421 of the rotary sleeve 420.
  • the axial position of the rotationally secured squeezing ring 440 is therefore changed during a rotation of the rotary sleeve 420.
  • the crimp ring 440 With his inner shoulder the crimp ring 440 abuts an inclined outer surface 433 of the clamping tongues 431, whereby the axial displacement of the crimp ring is converted into a radial change in position of the clamping tongues.
  • a radial upward movement of the crimp ring 440 leads to a compression of the clamping tongues 431.
  • a sleeve-shaped sealing collar 450 can be seen, which is pressed with its in the figure lower end by the clamping basket 430 sealingly against the cylinder wall 413 of the connector housing 410.
  • the upper end of the sealing collar 450 is pressed tightly to the cable sheath after insertion of a cable and tightening the strain relief, whereby the overall transition from cable to connector housing is sealed to the outside.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Cable Accessories (AREA)

Description

Die Erfindung betrifft eine Steckvorrichtung mit Zugentlastung umfassend ein Steckvorrichtungsgehäuse und einen Klemmkorb mit radial beweglichen Klemmzungen. Ferner betrifft sie einen Klemmkorb für eine derartige Steckvorrichtung.The invention relates to a plug-in device with strain relief comprising a plug-in device housing and a clamping cage with radially movable clamping tongues. Furthermore, it relates to a terminal basket for such a plug-in device.

Eine Steckvorrichtung der eingangs beschriebenen Art ist beispielsweise aus der DE 100 11 341 C2 bekannt. Diese Steckvorrichtung umfasst ein Steckvorrichtungsgehäuse sowie einen Klemmkorb mit einer ringförmigen Trägerwand und sich davon axial erstreckenden Klemmzungen. Die Klemmzungen können radial nach innen gepresst werden und sich dadurch an ein durch den Klemmkorb geführtes Kabel anpressen. Das Zusammendrücken der Klemmzungen wird erreicht, indem eine Drehhülse an das Steckvorrichtungsgehäuse geschraubt wird, die den Klemmkorb axial verschiebt und dadurch die Klemmzungen gegen konische Schultern des Steckvorrichtungsgehäuses presst. Zur Abdichtung der Zugentlastung ist ferner im Innern des Klemmkorbes eine im Wesentlichen zylindrische, elastische Dichtmanschette lose angeordnet oder fest angespritzt.A plug-in device of the type described above is for example from the DE 100 11 341 C2 known. This plug-in device comprises a plug device housing and a clamping cage with an annular support wall and axially extending clamping tongues thereof. The clamping tongues can be pressed radially inwards and thereby press against a guided through the clamping basket cable. The compression of the clamping tongues is achieved by screwing a rotary sleeve to the connector housing, which axially displaces the clamping basket and thereby presses the clamping tongues against conical shoulders of the connector housing. To seal the strain relief, a substantially cylindrical, elastic sealing collar is also arranged loosely or firmly molded in the interior of the clamping basket.

Des Weiteren ist aus der US 2006/0105628 A1 ein Verbinder für ein Koaxialkabel bekannt, bei dem ein axial beweglicher Ring von einer axial beweglichen Betätigungshülse auf die Klemmzungen eines Klemmkorbes geschoben werden kann, um diesen dauerhaft an einem Kabel zu fixieren.
Vor diesem Hintergrund war es Aufgabe der vorliegenden Erfindung, eine alternative Ausgestaltung einer Steckvorrichtung bereitzustellen, welche eine besonders hohe Funktionssicherheit und Robustheit aufweist.
Diese Aufgabe wird durch eine elektrische Steckvorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen enthalten.Furthermore, from the US 2006/0105628 A1 a connector for a coaxial cable, in which an axially movable ring can be pushed by an axially movable actuating sleeve on the clamping tongues of a clamping basket to fix it permanently to a cable.
Against this background, it was an object of the present invention to provide an alternative embodiment of a plug-in device, which has a particularly high reliability and robustness.
This object is achieved by an electrical plug-in device having the features of claim 1 solved. Advantageous embodiments are contained in the subclaims.

Die erfindungsgemäße Steckvorrichtung, bei der es sich insbesondere um einen Stecker oder eine Kupplung/Dose nach Norm DIN EN 60309 handeln kann, enthält eine Zugentlastung. Dabei wird wie üblich unter einer "Zugentlastung" ein Mechanismus verstanden, welcher ein elektrisches Kabel mechanisch fest und vorzugsweise auch abgedichtet mit dem Gehäuse der Steckvorrichtung verbindet, so dass ein Zug am Kabel sich auf das Gehäuse und nicht etwa auf innenliegende elektrische Anschlüsse überträgt. Die Steckvorrichtung umfasst die folgenden Komponenten:

  1. a) Ein Steckvorrichtungsgehäuse, in welchem die Bauteile der Steckvorrichtung (Kontaktstifte/Kontaktbuchsen, elektrische Anschlussklemmen etc.) gelagert sind und das in der Regel aus Kunststoff oder Leichtmetall besteht.
  2. b) Einen Klemmkorb mit radial beweglichen Klemmzungen, entlang dessen Axialrichtung ein Kabel in das Steckvorrichtungsgehäuse geführt werden kann. Wie eingangs erläutert können sich die Klemmzungen durch radiale Einwärtsbewegung an den Mantel eines solchen Kabels anlegen und dieses dadurch mit dem Klemmkorb mechanisch koppeln. Typischerweise sind die Klemmzungen elastisch federnd an einem ringförmigen Träger angebracht, so dass sie ohne Einwirkung von äußeren Kräften eine vorgegebene Ruheposition annehmen.
  3. c) Eine Drehhülse, welche drehbeweglich, jedoch mit axial im Wesentlichen feststehender Position am Steckvorrichtungsgehäuse gelagert ist. Wie vorstehend definiert soll dabei die "axiale Position" dem Verlauf eines in die Steckvorrichtung eingeführten Kabels entsprechen.
    Die Drehhülse soll ferner eine Innenstruktur (z. B. ein Innengewinde) aufweisen, welche durch axiale Verschiebung eines axial beweglich gelagerten Körpers auf die radiale Position der Klemmzungen am Klemmkorb einwirkt, wenn die Drehhülse gedreht wird. Mit anderen Worten können durch ein Drehen der Drehhülse die Klemmzungen des Klemmkorbes an den Mantel eines Kabels angepresst (oder hiervon gelöst) werden.
The plug-in device according to the invention, which may in particular be a plug or a coupling / socket according to standard DIN EN 60309, contains a strain relief. As usual, a "strain relief" is understood to mean a mechanism which connects an electrical cable mechanically and preferably also sealed to the housing of the plug-in device, so that a pull on the cable transfers to the housing and not to internal electrical connections. The plug-in device comprises the following components:
  1. a) A plug-in device housing in which the components of the plug-in device (contact pins / contact sockets, electrical terminals, etc.) are mounted and which is usually made of plastic or light metal.
  2. b) a clamping cage with radially movable clamping tongues, along the axial direction of a cable can be performed in the connector housing. As explained above, the clamping tongues can create by radial inward movement of the jacket of such a cable and thereby mechanically couple it with the clamping basket. Typically, the clamping tongues are resiliently mounted on an annular support so that they assume a predetermined rest position without the action of external forces.
  3. c) A rotary sleeve, which is rotatably mounted, but with axially substantially fixed position on the connector housing. As defined above, the "axial position" is intended to correspond to the course of a cable inserted into the plug-in device.
    The rotary sleeve should also have an internal structure (eg an internal thread), which acts on the clamping position by axial displacement of an axially movably mounted body on the radial position of the clamping tongues when the rotary sleeve is rotated. In other words, by turning the rotary sleeve, the clamping tongues of Clamp basket pressed against (or detached from) the jacket of a cable.

Die beschriebene Steckvorrichtung ermöglicht das Festlegen des Klemmkorbes der Zugentlastung an ein Kabel durch die Drehung einer Drehhülse, wobei die Drehhülse vorteilhafterweise ihre axiale Position gegenüber dem Steckvorrichtungsgehäuse nicht verändert. Axiale Verschiebebewegungen finden vielmehr nur im Inneren des Mechanismus statt, wo sie vor Einflüssen von außen geschützt sind. Es gibt daher keinen Spalt veränderlicher Breite zwischen Drehhülse und Steckvorrichtungsgehäuse, welcher verschmutzen oder Gegenstände bzw. die Finger eines Benutzers einklemmen könnte. Nicht zuletzt wird auch das optische Erscheinungsbild der Steckvorrichtung verbessert, da diese für jeden Klemmzustand des Klemmkorbes bzw. Kabeldurchmesser äußerlich gleich aussieht.The plug-in device described allows the fixing of the clamping cage of the strain relief to a cable by the rotation of a rotary sleeve, wherein the rotary sleeve advantageously does not change its axial position relative to the connector housing. Instead, axial displacements only take place inside the mechanism, where they are protected from external influences. There is therefore no gap of variable width between the rotating sleeve and the plug-in housing, which could contaminate or pinch objects or the fingers of a user. Last but not least, the visual appearance of the plug-in device is improved, since it looks the same externally for each clamping state of the clamping basket or cable diameter.

Der axial beweglich gelagerte Körper, der mit der Innenstruktur der Drehhülse zusammenwirkt, kann insbesondere der Klemmkorb selber sein. In diesem Falle wird außer dem Steckvorrichtungsgehäuse, der Drehhülse und dem Klemmkorb kein weiteres Bauteil zwingend benötigt, um die gewünschte Klemmwirkung zu erreichen.The axially movably mounted body, which cooperates with the inner structure of the rotary sleeve, may in particular be the clamping basket itself. In this case, except the plug-in device housing, the rotary sleeve and the clamping cage no further component is required to achieve the desired clamping effect.

Bei der vorstehend beschriebenen Realisierung ist der Klemmkorb vorzugsweise abgedichtet und verdrehsicher am Steckvorrichtungsgehäuse gelagert. Eine Abdichtung des Klemmkorbes gegenüber dem Steckvorrichtungsgehäuse verhindert, dass zwischen diesen beiden Bauteilen hindurch Feuchtigkeit und/oder Schmutz in das Innere der Steckvorrichtung eindringen kann. Durch die Verdrehsicherung wird garantiert, dass der Klemmkorb nicht von einer Drehbewegung der Drehhülse mitgeschleppt werden kann. Die Verdrehsicherung kann beispielsweise durch axial verlaufende Rippen am Steckvorrichtungsgehäuse und/oder Klemmkorb bewirkt werden.In the implementation described above, the clamping cage is preferably sealed and mounted against rotation on the connector housing. A sealing of the clamping basket relative to the plug-in housing prevents moisture and / or dirt from penetrating into the interior of the plug-in device between these two components. The anti-rotation ensures that the clamping basket can not be dragged by a rotary movement of the rotating sleeve. The rotation can be effected for example by axially extending ribs on the connector housing and / or clamping basket.

Des Weiteren können bei der Steckvorrichtung mit verschiebebeweglichem Klemmkorb die Außenflächen der Klemmzungen während einer axialen Verschiebebewegung des Klemmkorbes mit dem Steckvorrichtungsgehäuse und/oder mit der Drehhülse zusammenwirken. Die Klemmzungen können sich beispielsweise über schräg zur (Kabel-)Achse verlaufende Kontaktflächen an einer Schulter des Steckvorrichtungsgehäuses abstützen und dadurch bei einer axialen Verschiebung des Klemmkorbes radial bewegt werden.Furthermore, in the case of the plug-in device with a sliding-movable clamping cage, the outer surfaces of the clamping tongues can interact with the plug-in device housing and / or with the rotary sleeve during an axial displacement movement of the clamping basket. The clamping tongues can become For example, supported over obliquely to the (cable) axis extending contact surfaces on a shoulder of the connector housing and thereby be moved radially in an axial displacement of the clamping basket.

Der axial beweglich gelagerte Körper, der mit der Innenstruktur der Drehhülse zusammenwirkt, kann bei einer zweiten Realisierung der Erfindung ein separater Quetschring sein. Der Quetschring kann seinerseits auf verschiedene Weise während seiner Axialbewegung auf den Klemmkorb einwirken. Im einfachsten Falle übt er unmittelbar in radialer Richtung Druck auf schräge Außenflächen der Klemmzungen aus. Ein Vorteil der Verwendung eines separaten Quetschringes besteht darin, dass der Klemmkorb an einer festen axialen Position stehen kann, so dass es zu keiner Relativbewegung zwischen Klemmkorb und zu befestigendem Kabel kommt.The axially movably mounted body, which cooperates with the inner structure of the rotary sleeve, may be a separate crimp ring in a second implementation of the invention. The squeezing ring can in turn act on the clamping basket in various ways during its axial movement. In the simplest case, it exerts pressure directly in the radial direction on inclined outer surfaces of the clamping tongues. An advantage of using a separate squeezing ring is that the clamping cage can stand at a fixed axial position, so that there is no relative movement between the clamping cage and cable to be attached.

Im vorstehenden Fall kann der Klemmkorb insbesondere einstückig mit dem Steckvorrichtungsgehäuse ausgebildet sein, so dass für die Zugentlastung ein loses Teil weniger benötigt wird und der Übergang von Klemmkorb zu Steckvorrichtungsgehäuse per Konstruktion dicht ist. Alternativ kann der Klemmkorb auch ein separates, am Steckvorrichtungsgehäuse befestigbares Teil sein. Beispielsweise kann das Steckvorrichtungsgehäuse ein Gewinde oder einen Bajonettansatz aufweisen, an dem der Klemmkorb mit einer komplementären Struktur befestigbar ist. Ein separater Klemmkorb hat den Vorteil, dass er bei Beschädigung leicht ausgetauscht werden kann und dass verschiedene Ausführungsformen von Klemmkörben und Steckvorrichtungsgehäusen kombiniert werden können.In the above case, the clamping basket may in particular be formed integrally with the plug device housing, so that a loose part is less required for the strain relief and the transition from terminal basket to plug housing by construction is tight. Alternatively, the clamping basket can also be a separate, attachable to the connector housing part. For example, the connector housing may have a thread or a bayonet approach, on which the clamping cage with a complementary structure can be fastened. A separate clamping basket has the advantage that it can be easily replaced when damaged and that different embodiments of clamping baskets and connector housings can be combined.

Die Innenstruktur der Drehhülse, welche mit dem axial verschiebebeweglich gelagerten Körper zusammenwirkt, kann insbesondere ein Innengewinde sein. Dieses kann dann mit einem komplementären Außengewinde (bei den obigen Ausführungsformen am Klemmkorb bzw. Quetschring) zusammenwirken, um den zugehörigen Körper axial zu verschieben.The inner structure of the rotary sleeve, which cooperates with the axially displaceably movably mounted body, may in particular be an internal thread. This can then cooperate with a complementary external thread (in the above embodiments on the clamping cage or pinch ring) to move the associated body axially.

Neben der mechanischen Fixierung eines Kabels am Steckvorrichtungsgehäuse ist es häufig auch eine Aufgabe von Zugentlastungen, den Eintritt des Kabels in die Steckvorrichtung gegen das Eindringen von Staub und/oder Feuchtigkeit abzudichten. Zu diesem Zweck kann die Steckvorrichtung optional eine im Innern des Klemmkorbes anzuordnende elastische Dichtmanschette aufweisen. Beim Zusammenpressen der Klemmzungen des Klemmkorbes wird die Dichtmanschette dann von allen Seiten fest an den Mantel des Kabels gepresst, so dass zwischen Kabel und Dichtmanschette nichts hindurchdringen kann.In addition to the mechanical fixation of a cable to the connector housing, it is often a task of strain relief, the entry of the cable into the connector against the ingress of dust and / or moisture seal. For this purpose, the plug-in device may optionally have an elastic sealing sleeve to be arranged in the interior of the clamping basket. When the clamping tongues of the clamping basket are pressed together, the sealing collar is then pressed firmly against the jacket of the cable from all sides, so that nothing can penetrate between the cable and the sealing collar.

Die genannte Dichtmanschette ist im montierten Zustand der Steckvorrichtung vorzugsweise dichtend mit dem Steckvorrichtungsgehäuse und/oder mit einer ringförmigen Trägerwand des Klemmkorbes verbunden. Auf diese Weise wird das Kabel insgesamt dicht in die Steckvorrichtung bzw. in den Klemmkorb eingeführt.Said sealing collar is preferably connected in the assembled state of the plug-in device sealingly with the plug device housing and / or with an annular support wall of the clamping basket. In this way, the cable is a total of tightly inserted into the plug-in device or in the terminal box.

Eine dichtende Anbindung der Dichtmanschette an das Steckvorrichtungsgehäuse bzw. an die Trägerwand des Klemmkorbes kann durch mechanisches Anpressen, vorzugsweise auch durch stoffschlüssige Verbindung erfolgen. Insbesondere kann die Dichtmanschette bei der Herstellung unmittelbar an das entsprechende Teil angespritzt werden.A sealing connection of the sealing sleeve to the plug device housing or to the support wall of the clamping basket can be done by mechanical pressing, preferably by cohesive connection. In particular, the sealing collar can be molded directly onto the corresponding part during production.

Die Drehhülse ist optional abgedichtet gegenüber dem Steckvorrichtungsgehäuse angeordnet, um den inneren Mechanismus der Zugentlastung vor dem Eindringen von Schmutz und/oder Feuchtigkeit zu schützen. Eine solche Abdichtung ist verhältnismäßig leicht realisierbar, da zwischen Drehhülse und Steckvorrichtungsgehäuse nur eine Relativdrehung (ohne Axialverschiebung) möglich ist.The rotary sleeve is optionally sealed against the connector housing to protect the internal mechanism of the strain relief from the ingress of dirt and / or moisture. Such a seal is relatively easy to implement, since between rotary sleeve and plug housing only a relative rotation (without axial displacement) is possible.

Des Weiteren kann die Drehhülse einen Einführtrichter für ein Kabel aufweisen, um dessen Einfädelung in den Klemmkorb und Durchführung zur Steckvorrichtung zu erleichtern.Furthermore, the rotary sleeve may have an insertion funnel for a cable in order to facilitate its threading into the clamping basket and passage to the plug-in device.

Gemäß einem zweiten Aspekt betrifft die Erfindung einen Klemmkorb für die Zugentlastung einer Steckvorrichtung, insbesondere für eine Steckvorrichtung nach einer der oben beschriebenen Ausführungsformen. Der Klemmkorb soll dabei eine ringförmige (im Querschnitt z. B. zylindrische oder polygonale) Trägerwand mit sich davon axial erstreckenden Klemmzungen aufweisen. Er ist dadurch gekennzeichnet, dass zumindest ein Teil der Außenflächen der Klemmzungen auf dem Mantel eines Kegelstumpfes liegt, dessen größerer Radius näher bei den freien Enden der Klemmzungen ist als sein kleinerer Radius. Mit anderen Worten erstrecken sich die Außenseiten der Klemmzungen von der Trägerwand aus gesehen schräg zur Achsrichtung radial nach außen.According to a second aspect, the invention relates to a clamping basket for the strain relief of a plug-in device, in particular for a plug-in device according to one of the embodiments described above. The clamping basket is intended to have an annular (in cross-section, for example, cylindrical or polygonal) carrier wall with clamping tongues extending axially therefrom. It is characterized in that at least a part of the outer surfaces of the clamping tongues lies on the jacket of a truncated cone whose larger radius is closer to the free ends of the clamping tongues than its smaller radius. With In other words, viewed from the support wall, the outer sides of the clamping tongues extend obliquely radially outward in relation to the axial direction.

Ein ringförmiger, auf die beschriebenen Außenflächen des Klemmkorbes einwirkender Körper (z. B. eine Schulter des Steckvorrichtungsgehäuses oder ein Quetschring der oben beschriebenen Art) kann ein radial einwärts gerichtetes Zusammenpressen der Klemmzungen bewirken, wenn er sich axial von der Trägerwand entfernt. Die Klemmzungen werden dabei gegenüber der Trägerwand in Axialrichtung vorteilhafterweise auf Zug belastet - und nicht wie bei bekannten Klemmkörben in Richtung der Trägerwand gestaucht.An annular body (e.g., a shoulder of the connector housing or a crimp ring of the type described above) acting on the described exterior surfaces of the clamp basket may cause radially inward compression of the clamp tongues as it moves axially away from the support wall. The clamping tongues are advantageously loaded with respect to the support wall in the axial direction to train - and not compressed as in known clamping baskets in the direction of the support wall.

Gemäß einer Weiterbildung des Klemmkorbes kann ein weiterer Teil der Außenflächen der Klemmzungen auf dem Mantel eines zweiten Kegelstumpfes liegen, dessen kleinerer Radius näher bei den freien Enden der Klemmzungen ist als sein größerer Radius. Auf diese Weise wird eine zweite konische Wirkfläche zur Verfügung gestellt, über welche alternativ in herkömmlicher Weise (durch Stauchdruck) ein Zusammenpressen der Klemmzungen bewirkt werden kann.According to a development of the clamping basket, a further part of the outer surfaces of the clamping tongues may lie on the jacket of a second truncated cone whose smaller radius is closer to the free ends of the clamping tongues than its larger radius. In this way, a second conical active surface is provided, via which alternatively in a conventional manner (by compression pressure), a compression of the clamping tongues can be effected.

Die Klemmzungen des Klemmkorbes weisen vorzugsweise in radialer Richtung einen im Wesentlichen dreieckigen Querschnitt auf. Dadurch wird zum einen die gewünschte Kegelstumpf-Form erreicht, zum anderen erhalten die Klemmzungen eine hohe Stabilität. Gerade beim Greifen sehr dünner Kabeldurchmesser ist eine solche Stabilität von Vorteil, da sie ein Verbiegen bzw. Verwinden zu schwacher Klemmzungen verhindert.The clamping tongues of the clamping basket preferably have a substantially triangular cross section in the radial direction. As a result, on the one hand, the desired truncated cone shape is achieved, on the other hand, the clamping tongues obtain a high stability. Especially when grasping very thin cable diameter such stability is advantageous because it prevents bending or twisting to weak terminal tongues.

Die Trägerwand des Klemmkorbes kann optional ein Innengewinde und/oder ein Außengewinde aufweisen. Der Klemmkorb kann damit zum Beispiel an einem Steckvorrichtungsgehäuse festgeschraubt werden. Alternativ kann das Gewinde auch mit dem Innengewinde einer Drehhülse bei der oben beschriebenen Steckvorrichtung zusammenwirken, um den Klemmkorb axial zu verschieben.The support wall of the clamping basket may optionally have an internal thread and / or an external thread. The clamping cage can thus be screwed to a plug-in device housing, for example. Alternatively, the thread also cooperate with the internal thread of a rotary sleeve in the above-described plug-in device to move the clamping cage axially.

Im Folgenden wird die Erfindung mit Hilfe der Figuren beispielhaft erläutert. Es zeigt:

Fig. 1
die schematische Skizze einer Steckvorrichtung gemäß einem ersten erfindungsgemäßen Funktionsprinzip mit einem axial beweglichen Klemmkorb;
Fig. 2
den Schnitt durch eine beispielhafte konkrete Ausführungsform des ersten Funktionsprinzips;
Fig. 3
die schematische Skizze einer Steckvorrichtung gemäß einem zweiten erfindungsgemäßen Funktionsprinzip mit einem axial beweglichen Quetschring;
Fig. 4
den Schnitt durch eine beispielhafte konkrete Ausführungsform des zweiten Funktionsprinzips.
In the following, the invention will be explained by way of example with the aid of the figures. It shows:
Fig. 1
the schematic diagram of a plug-in device according to a first operating principle according to the invention with an axially movable clamping basket;
Fig. 2
the section through an exemplary concrete embodiment of the first functional principle;
Fig. 3
the schematic diagram of a plug-in device according to a second operating principle according to the invention with an axially movable squeezing ring;
Fig. 4
the section through an exemplary concrete embodiment of the second functional principle.

Gleiche bzw. um 100 differierende Bezugszeichen beziehen sich in den Zeichnungen auf identische oder gleichartige Komponenten.The same or different by 100 reference numerals in the drawings refer to identical or similar components.

Figur 1 zeigt schematisch die Komponenten einer ersten Konstruktionsvariante der Kabel-Zugentlastung einer Steckvorrichtung 100. Die Steckvorrichtung 100 weist im Wesentlichen drei Komponenten auf, nämlich:

  • Ein Steckvorrichtungsgehäuse 110, in welchem die weiteren, hier nicht näher dargestellten Komponenten der Steckvorrichtung untergebracht sind, also beispielsweise Stecker- oder Buchseneinsätze.
  • Eine Drehhülse 120, welche drehbar aber axial im Wesentlichen feststehend am Steckvorrichtungsgehäuse 110 gelagert ist. Eine solche Lagerung kann beispielsweise über einen radial nach außen stehenden Flansch 111 des Steckvorrichtungsgehäuses und eine diesen Flansch umgreifende Nut 122 der Drehhülse 120 erfolgen. Die Außenfläche der Drehhülse 120 ist mit der Hand und/oder einem Werkzeug greifbar und damit auch drehbar.
  • Einen Klemmkorb 130, welcher sich in Axialrichtung A erstreckende, radial federnd gelagerte Klemmzungen 131 oder -lamellen aufweist. Im dargestellten Beispiel sind die Klemmzungen alle an einer ringförmigen Trägerwand 132 angelenkt. Durch radiales Einwärtspressen der Klemmzungen 131 können sich diese in bekannter Weise an den Mantel eines Kabels 1 (nur teilweise dargestellt) anlegen, das sich entlang der Achse A von außen in das Steckvorrichtungsgehäuse 110 erstreckt.
FIG. 1 schematically shows the components of a first design variant of the cable strain relief of a plug-in device 100. The plug-in device 100 has essentially three components, namely:
  • A plug-in device housing 110, in which the other, not shown here components of the plug-in device are housed, so for example plug or socket inserts.
  • A rotary sleeve 120 which is rotatably but axially substantially stationary mounted on the connector housing 110. Such a bearing can take place, for example, via a radially outwardly projecting flange 111 of the plug-in device housing and a groove 122 of the rotary sleeve 120 encompassing this flange. The outer surface of the rotary sleeve 120 is tangible with the hand and / or a tool and thus also rotatable.
  • A clamping cage 130, which in the axial direction A extending, radially resiliently mounted clamping tongues 131 or lamellae. In the example shown, the clamping tongues are all hinged to an annular support wall 132. By radial inward pressing the Clamping tongues 131 can invest this in a known manner on the jacket of a cable 1 (only partially shown), which extends along the axis A from the outside into the connector housing 110.

Die Drehhülse 120 weist eine Innenstruktur auf, die mit dem Klemmkorb 130 so zusammenwirkt, dass sich dieser axial bewegt, wenn die Drehhülse 120 gedreht wird. In Figur 1 ist die Innenstruktur beispielhaft als ein Innengewinde 121 dargestellt, das mit einem Außengewinde 134 an der Trägerwand 132 des Klemmkorbes 130 zusammenwirkt.The rotary sleeve 120 has an internal structure which cooperates with the clamp basket 130 so as to move axially when the rotary sleeve 120 is rotated. In FIG. 1 the inner structure is exemplified as an internal thread 121 which cooperates with an external thread 134 on the support wall 132 of the clamping basket 130.

Des Weiteren ist ein Mechanismus vorgesehen, mit dem die axiale Verschiebung des Klemmkorbes 130 in eine radiale Bewegung der Klemmzungen 131 umgesetzt wird. Dies kann erreicht werden, indem die Außenflächen 133 der Klemmzungen 131 schräg zur Achsrichtung A verlaufen; durch Zusammenwirken mit einer ringförmigen Schulter 112 am Steckvorrichtungsgehäuse (oder alternativ an der Drehhülse 120) können sie dann radial einwärts gedrückt werden. Bei der in Figur 1 dargestellten Konfiguration erzeugt eine nach unten gerichtete Bewegung des Klemmkorbes 130 ein Zusammenpressen der Klemmzungen 131. Wären die Klemmzungen 131 allerdings unterhalb der Schulter 112 angeordnet, so würden sie durch eine umgekehrte, nach oben gerichtete axiale Bewegung nach innen gepresst.Furthermore, a mechanism is provided, with which the axial displacement of the clamping basket 130 is converted into a radial movement of the clamping tongues 131. This can be achieved by the outer surfaces 133 of the clamping tongues 131 extend obliquely to the axial direction A; by cooperation with an annular shoulder 112 on the connector housing (or alternatively on the rotary sleeve 120), they can then be pressed radially inwardly. At the in FIG. 1 As shown, when the clamping tongues 131 were positioned below the shoulder 112, they would be forced inwardly by a reverse upward axial movement.

Vorteilhaft an der beschriebenen Konstruktion ist, dass die von außen zu betätigende Drehhülse 120 gegenüber dem Steckvorrichtungsgehäuse 110 eine feste axiale Position hat. Bei einer Drehung entstehen daher keine Spalten variabler Breite, und das Innere des Mechanismus ist optimal vor äußeren Einflüssen geschützt.An advantage of the described construction is that the externally actuated rotary sleeve 120 relative to the connector housing 110 has a fixed axial position. In one rotation, therefore, no columns of variable width, and the interior of the mechanism is optimally protected from external influences.

Figur 2 zeigt die konkrete Ausführungsform einer Steckvorrichtung 200 gemäß dem vorstehend beschriebenen ersten Konstruktionsprinzip. Von der Steckvorrichtung 200 ist wiederum nur das rückwärtige Ende des Gehäuses 210 (üblicherweise als "Haube" bezeichnet) dargestellt. Das Steckvorrichtungsgehäuse 210 endet in einer Zylinderwand 213, welche an Schultern 212 in einen sich kegelförmig erweiternden Bereich übergeht. FIG. 2 shows the specific embodiment of a plug-in device 200 according to the first design principle described above. Of the plug-in device 200, in turn, only the rear end of the housing 210 (usually referred to as "hood") is shown. The connector housing 210 terminates in a cylinder wall 213, which merges at shoulders 212 in a conically widening area.

Eine Drehhülse 220 ist an der Zylinderwand 213 drehbeweglich um die Achse A gelagert. In axialer Richtung ist die Drehhülse 220 durch die Abstützung an zwei Flanschen 211 a und 211 b des Gehäuses 210 fixiert. Die Fixierung gegenüber einer nach oben gerichteten axialen Abzugsbewegung erfolgt dabei über Rasthaken 222, welcher bei der Montage der Drehhülse 220 elastisch radial nach außen ausweichen können. Des Weiteren ist eine ringförmige Dichtung 261 zwischen der Drehhülse 220 und dem Steckvorrichtungsgehäuse 210 vorgesehen, um das Eindringen von Schmutz und Feuchtigkeit in das Innere des Mechanismus zu verhindern.A rotary sleeve 220 is rotatably supported on the cylinder wall 213 about the axis A. In the axial direction, the rotary sleeve 220 is fixed by the support on two flanges 211 a and 211 b of the housing 210. The fixation against an upward axial withdrawal movement takes place via latching hooks 222, which can dodge elastically radially outward during assembly of the rotary sleeve 220. Furthermore, an annular seal 261 is provided between the rotary sleeve 220 and the plug housing 210 to prevent the ingress of dirt and moisture into the interior of the mechanism.

An ihrer Innenseite trägt die Drehhülse 220 ein Innengewinde 221. Ferner ist eine trichterförmige Einstülpung 224 am oberen Ende der Drehhülse 220 vorgesehen, welche das genannte Innengewinde 221 mit Abstand umgibt. Durch die Einstülpung 224 wird die Einführung eines Kabels (nicht dargestellt) erleichtert.On its inside, the rotary sleeve 220 carries an internal thread 221. Further, a funnel-shaped indentation 224 is provided at the upper end of the rotary sleeve 220, which surrounds said internal thread 221 at a distance. The indentation 224 facilitates the insertion of a cable (not shown).

Des Weiteren ist ein in Axialrichtung verschiebebeweglich aber verdrehsicher gelagerter Klemmkorb 230 erkennbar mit einer (in der Figur oben angeordneten) ringförmigen Trägerwand 232, von der aus sich axial nach unten Klemmzungen 231 erstrecken. Die Trägerwand 232 hat ein Außengewinde 234, das in das Innengewinde 221 der Drehhülse 220 eingreift. Bei einer Rotation der Drehhülse 220 wird somit der Klemmkorb 230 in Axialrichtung aufwärts oder -je nach Drehrichtung - abwärts bewegt. Eine Ringdichtung 262 zwischen Trägerwand 232 und der Zylinderwand 213 des Steckvorrichtungsgehäuses sorgt dabei in allen axialen Positionen für eine Abdichtung zwischen diesen beiden Komponenten.Furthermore, a clamping cage 230 mounted so as to be displaceable in the axial direction but secured against rotation is recognizable by an annular carrier wall 232 (arranged at the top in the figure), from which clamping tongues 231 extend axially downwardly. The support wall 232 has an external thread 234, which engages in the internal thread 221 of the rotary sleeve 220. During a rotation of the rotary sleeve 220, the clamping cage 230 is thus moved upward in the axial direction or downward depending on the direction of rotation. A ring seal 262 between support wall 232 and the cylinder wall 213 of the connector housing ensures in all axial positions for a seal between these two components.

Die Klemmzungen 231 haben einen im Wesentlichen dreieckigen radialen Querschnitt mit schräg zur Achse A verlaufenden Gleitflächen 233. Diese Gleitflächen 233 wirken mit der Schulter 212 des Steckvorrichtungsgehäuses so zusammen, dass bei einer nach oben gerichteten axialen Bewegung des Klemmkorbes 230 die Klemmzungen 231 radial einwärts in Richtung eines durchgeführten Kabels gedrückt werden. Greifzähne innen am freien Ende der Klemmzungen 231 können sich dabei in den Mantel eines solchen Kabels eingraben, um dieses mechanisch gut zu fixieren.The clamping tongues 231 have a substantially triangular radial cross-section with sliding surfaces 233 extending obliquely to the axis A. These sliding surfaces 233 cooperate with the shoulder 212 of the plug-in housing such that upon an upward axial movement of the clamping basket 230, the clamping tongues 231 extend radially inwards of a cable being carried. Gripping teeth inside at the free end of the clamping tongues 231 can thereby dig into the jacket of such a cable to fix this mechanically well.

Des Weiteren ist in Figur 2 eine elastische, hülsenförmige Dichtmanschette 250 erkennbar, welche im Inneren des Klemmkorbes 230 angeordnet ist und sich im Wesentlichen vom freien Ende der Klemmzungen 231 bis zur Trägerwand 232 erstreckt. Bei einem Zusammenziehen der Klemmzungen 231 wird das in der Figur untere Ende der Dichtmanschette 250 dichtend an den Mantel eines Kabels gedrückt. Das obere Ende der Dichtmanschette 250 ist vorzugsweise dichtend mit dem Innern der Trägerwand 232 verbunden, beispielsweise stoffschlüssig durch Anspritzen in einem Zwei-Komponenten-Spritzverfahren.Furthermore, in FIG. 2 an elastic, sleeve-shaped sealing collar 250 can be seen, which is arranged in the interior of the clamping basket 230 and extends substantially from the free end of the clamping tongues 231 to the support wall 232. When the clamping tongues 231 contract, the lower end of the sealing collar 250 in the figure is pressed sealingly against the jacket of a cable. The upper end of the sealing collar 250 is preferably sealingly connected to the interior of the support wall 232, for example by material bonding by injection molding in a two-component injection molding process.

Figur 3 zeigt ein alternatives Konstruktionsprinzip einer erfindungsgemäßen Steckvorrichtung 300 mit Zugentlastung. Diese enthält im Wesentlichen vier Komponenten:

  • Ein Steckvorrichtungsgehäuse 310, welches im Prinzip ähnlich wie in Figur 1 ausgestaltet ist.
  • Eine Drehhülse 320, welche ebenfalls ähnlich wie in Figur 1 ausgestaltet sein kann und drehbar, aber axial feststehend am Steckvorrichtungsgehäuse 310 gelagert ist.
  • Einen Klemmkorb 330. Auch dieser kann ähnlich wie in Figur 1 aufgebaut sein, jedoch ist er axial gegenüber dem Steckvorrichtungsgehäuse 310 fixiert (allgemeiner: axial weniger oder anders beweglich als der nachfolgend beschriebene Quetschring 340). Der Klemmkorb 330 könnte beispielsweise einstückig mit dem Steckvorrichtungsgehäuse 310 ausgebildet sein.
  • Einen Quetschring 340, welcher axial verschiebebeweglich und verdrehsicher innerhalb der Drehhülse 320 gelagert ist.
FIG. 3 shows an alternative construction principle of a plug-in device 300 according to the invention with strain relief. This contains essentially four components:
  • A plug-in housing 310, which in principle similar to in FIG. 1 is designed.
  • A rotary sleeve 320, which is also similar to in FIG. 1 may be configured and rotatably mounted, but axially stationary on the connector housing 310.
  • A clamp basket 330. Again, this can be similar to in FIG. 1 However, it is axially fixed to the connector housing 310 (more generally: axially less or otherwise movable than the squeezing ring 340 described below). The clamping basket 330 could, for example, be formed integrally with the plug-in housing 310.
  • A crimping ring 340, which is mounted axially displaceably movable and secured against rotation within the rotary sleeve 320.

Die Drehhülse weist eine Innenstruktur wie z. B. ein Innengewinde 321 auf, welche mit einer komplementären Struktur (z. B. einem Außengewinde 341) am Quetschring 340 zusammenwirkt, um den Quetschring bei einer Rotation der Drehhülse 320 axial zu verschieben. Durch die axiale Verlagerung des Quetschringes 340 kann wiederum eine radial einwärts gerichtete Kraft auf die schrägen Außenflächen 333 der Klemmzungen 331 des Klemmkorbes ausgeübt werden, um diese an ein Kabel anzupressen. Je nach Verlauf dieser Außenflächen bzw. Position des Quetschringes 340 kann das radiale Zusammenpressen der Klemmzungen 331 dabei mit einem Stauchen der Klemmzungen 331 in Richtung Trägerwand 332 oder mit einem Zug von der Trägerwand weg verbunden sein (Figur 3 zeigt den Fall eines Stauchens).The rotary sleeve has an internal structure such. B. an internal thread 321 which cooperates with a complementary structure (eg., An external thread 341) on the squeezing ring 340 to move the squeezing ring during rotation of the rotary sleeve 320 axially. By the axial displacement of the squeezing ring 340, in turn, a radially inwardly directed force can be exerted on the oblique outer surfaces 333 of the clamping tongues 331 of the clamping basket in order to press them against a cable. Depending on the course of this Outer surfaces or position of the squeezing ring 340, the radial compression of the clamping tongues 331 may be connected with a compression of the clamping tongues 331 in the direction of the support wall 332 or with a train away from the support wall ( FIG. 3 shows the case of a compression).

Die zweite Konstruktionsvariante gemäß Figur 3 hat den Vorteil, dass der Klemmkorb 330 gegenüber dem Steckvorrichtungsgehäuse 310 feststehend sein kann. Dies verhindert Relativbewegungen zwischen Klemmkorb und Kabel und erleichtert eine sichere Abdichtung zum Steckvorrichtungsgehäuse.The second design variant according to FIG. 3 has the advantage that the clamping cage 330 can be fixed relative to the plug-in housing 310. This prevents relative movement between the clamping cage and cable and facilitates a secure seal to the connector housing.

Figur 4 zeigt eine konkrete Ausführungsform der Zugentlastung einer Steckvorrichtung 400 gemäß dem allgemeinen Konstruktionsprinzip von Figur 3. FIG. 4 shows a concrete embodiment of the strain relief of a plug-in device 400 according to the general design principle of FIG. 3 ,

Das Steckvorrichtungsgehäuse 410 endet in einem Zylinderstück 413. Dieses ist mit einem Außengewinde 414 versehen, auf welches die ringförmige Trägerwand 432 des Klemmkorbes 430 mit einem komplementären Innengewinde 434 aufgeschraubt ist. Der Klemmkorb 430 ist auf diese Weise fest mit dem Gehäuse 410 verbunden. Die Klemmzungen 431 des Klemmkorbes 430 erstrecken sich ausgehend von der Trägerwand 432 von der Steckvorrichtung weg (in Figur 4 nach oben). Die Querschnitte der Klauen 431 oberhalb ihrer Anlenkungspunkte sind wiederum im Wesentlichen dreieckig mit zwei schräg zur Achsrichtung A stehenden Außenflächen 433.The connector housing 410 terminates in a cylindrical piece 413. This is provided with an external thread 414, on which the annular support wall 432 of the clamping basket 430 is screwed with a complementary internal thread 434. The clamping basket 430 is fixedly connected to the housing 410 in this way. The clamping tongues 431 of the clamping basket 430 extend away from the plug-in device (in FIG FIG. 4 up). The cross sections of the claws 431 above their articulation points are in turn essentially triangular with two outer surfaces 433 which are inclined with respect to the axial direction A.

Eine Drehhülse 420 ist drehbeweglich am Ende des Steckvorrichtungsgehäuses 410 gelagert. Die Drehhülse 420 stützt sich dabei auf einem Kragen 411 des Steckvorrichtungsgehäuses 410 ab. An einer axialen Abzugsbewegung wird sie durch Rasthaken 422 gehindert, die einen radial abstehenden Flansch 435 des Klemmkorbes hintergreifen. An ihrer Innenwand trägt die Drehhülse 420 ein Innengewinde 421, und das obere Ende der Drehhülse 420 weist eine Einstülpung als Kabel-Einführungstrichter 424 auf.A rotary sleeve 420 is rotatably mounted at the end of the connector housing 410. The rotary sleeve 420 is supported on a collar 411 of the plug-in device housing 410. At an axial withdrawal movement, it is prevented by latching hooks 422, which engage behind a radially projecting flange 435 of the clamping basket. On its inner wall, the rotary sleeve 420 carries an internal thread 421, and the upper end of the rotary sleeve 420 has an indentation as a cable insertion funnel 424.

Des Weiteren ist ein separater Quetschring 440 vorgesehen mit einem Außengewinde 441, welches in das Innengewinde 421 der Drehhülse 420 eingreift. Die axiale Position des verdrehsicher gelagerten Quetschringes 440 wird daher bei einer Rotation der Drehhülse 420 verändert. Mit seiner Innenschulter liegt der Quetschring 440 an einer schrägen Außenfläche 433 der Klemmzungen 431 an, wodurch die axiale Verschiebung des Quetschringes in eine radiale Positionsveränderung der Klemmzungen umgewandelt wird. Konkret führt bei der dargestellten Ausführungsform eine radiale Aufwärtsbewegung des Quetschringes 440 zu einem Zusammenpressen der Klemmzungen 431.Furthermore, a separate crimp ring 440 is provided with an external thread 441, which engages in the internal thread 421 of the rotary sleeve 420. The axial position of the rotationally secured squeezing ring 440 is therefore changed during a rotation of the rotary sleeve 420. With his inner shoulder the crimp ring 440 abuts an inclined outer surface 433 of the clamping tongues 431, whereby the axial displacement of the crimp ring is converted into a radial change in position of the clamping tongues. Specifically, in the illustrated embodiment, a radial upward movement of the crimp ring 440 leads to a compression of the clamping tongues 431.

Ferner ist eine hülsenförmige Dichtmanschette 450 erkennbar, welche mit ihrem in der Figur unteren Ende durch den Klemmkorb 430 dichtend an die Zylinderwand 413 des Steckvorrichtungsgehäuses 410 gepresst wird. Das obere Ende der Dichtmanschette 450 wird nach Einführung eines Kabels und Anziehen der Zugentlastung dicht an den Kabelmantel gepresst, wodurch insgesamt der Übergang von Kabel zu Steckvorrichtungsgehäuse nach außen hin abgedichtet ist.Further, a sleeve-shaped sealing collar 450 can be seen, which is pressed with its in the figure lower end by the clamping basket 430 sealingly against the cylinder wall 413 of the connector housing 410. The upper end of the sealing collar 450 is pressed tightly to the cable sheath after insertion of a cable and tightening the strain relief, whereby the overall transition from cable to connector housing is sealed to the outside.

Claims (15)

  1. Plug device (100, 200, 300, 400) with strain relief, comprising
    a) a plug device housing (110, 210, 310, 410);
    b) a clamping basket (130, 230, 330, 430) with radially movable clamping tongues (131, 231, 331, 431), along whose axial direction (A) a cable can be led into the plug device housing;
    c) a rotating sleeve (120, 220, 320, 420) which is rotatably mounted at the plug device housing;
    d) an axially movably mounted body (130, 230, 340, 440);
    characterized in that
    the rotating sleeve (120, 220, 320, 420) is mounted axially fixed at the plug device housing and has an internal structure (121, 221, 321, 421) which has an impact on the radial position of the clamping tongues by moving the axially movably mounted body (130, 230, 340, 440) when the rotating sleeve is turned.
  2. Plug device (100, 200) according to claim 1,
    characterized in that the axially movably mounted body is the clamping basket (130, 230).
  3. Plug device (100, 200) according to claim 2,
    characterized in that the clamping basket (130, 230) is mounted sealed and locked against rotation at the plug device housing (110, 210).
  4. Plug device (100, 200) according to claim 2 or 3,
    characterized in that the outer surfaces (133, 233) of the clamping tongues (131, 231) interact with the plug device housing (110, 210) and/or with the rotating sleeve (120, 220) when the clamping basket is moved in axial direction.
  5. Plug device (300, 400) according to claim 1,
    characterized in that the axially movably mounted body is a squeezing ring (340, 440).
  6. Plug device according to claim 5,
    characterized in that the clamping basket (330, 430) is formed in one piece with the plug device housing (310, 410) and/or can be fixed at the plug device housing.
  7. Plug device (100, 200, 300, 400) according to at least one of the claims 1 to 6,
    characterized in that the internal structure of the rotating sleeve (120, 220, 320, 420) is an internal thread (121, 221, 321, 421).
  8. Plug device (200, 400) according to at least one of the claims 1 to 7,
    characterized in that it has an elastic sealing collar (250, 450) inside the clamping basket (230, 430).
  9. Plug device (200, 400) according to claim 8,
    characterized in that the sealing collar (250, 450) is connected sealingly with the plug device housing (410) and/or a circular support wall (232) of the clamping basket (230) when the plug device is installed.
  10. Plug device (200, 400) according to claim 8 or 9,
    characterized in that the sealing collar (250, 450) is materially bonded to the plug device housing and/or the clamping basket.
  11. Plug device (200) according to at least one of the claims 1 to 10,
    characterized in that the rotating sleeve (220) is sealed against the plug device housing.
  12. Plug device (100, 200, 300, 400) according to at least one of the claims 1 to 11,
    characterized by a clamping basket (130, 230, 330, 430) with a circular support wall (132, 232, 332, 432) with axially extending clamping tongues (131, 231, 331, 431), wherein at least one part of the outer surface of the clamping tongues lies on the surface of a truncated cone whose larger radius is situated closer to the free ends of the clamping tongues than its smaller radius.
  13. Plug device (100, 200, 300, 400) according to claim 12,
    characterized in that another part of the outer surface (133, 233, 333, 433) of the clamping tongues lies on the surface of a second truncated cone whose smaller radius is situated closer to the free ends of the clamping tongues than its larger radius.
  14. Plug device (100, 200, 300, 400) according to claim 12 or 13,
    characterized in that the clamping tongues (131, 231, 331, 431) have in radial direction a substantially triangular cross section.
  15. Plug device (100, 200, 300, 400) according to at least one of the claims 12 to 14,
    characterized in that the support wall (132, 232, 332, 432) of the clamping basket has an internal thread (434) and/or an external thread (134, 234).
EP09152081.7A 2008-03-03 2009-02-04 Plug device with torsion relief Active EP2099101B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008000479A DE102008000479A1 (en) 2008-03-03 2008-03-03 Plug-in device with strain relief

Publications (2)

Publication Number Publication Date
EP2099101A1 EP2099101A1 (en) 2009-09-09
EP2099101B1 true EP2099101B1 (en) 2016-05-04

Family

ID=40639475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09152081.7A Active EP2099101B1 (en) 2008-03-03 2009-02-04 Plug device with torsion relief

Country Status (6)

Country Link
US (1) US7980885B2 (en)
EP (1) EP2099101B1 (en)
CN (1) CN101527407B (en)
DE (1) DE102008000479A1 (en)
DK (1) DK2099101T3 (en)
HK (1) HK1136903A1 (en)

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Also Published As

Publication number Publication date
CN101527407A (en) 2009-09-09
US20090221176A1 (en) 2009-09-03
DK2099101T3 (en) 2016-08-22
DE102008000479A1 (en) 2009-09-10
HK1136903A1 (en) 2010-07-09
CN101527407B (en) 2012-07-04
US7980885B2 (en) 2011-07-19
EP2099101A1 (en) 2009-09-09

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