EP0156189B1 - Plug or receptacle with strain relief device - Google Patents

Plug or receptacle with strain relief device Download PDF

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Publication number
EP0156189B1
EP0156189B1 EP85102371A EP85102371A EP0156189B1 EP 0156189 B1 EP0156189 B1 EP 0156189B1 EP 85102371 A EP85102371 A EP 85102371A EP 85102371 A EP85102371 A EP 85102371A EP 0156189 B1 EP0156189 B1 EP 0156189B1
Authority
EP
European Patent Office
Prior art keywords
plug
strain relief
basic body
relief clamp
plug according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP85102371A
Other languages
German (de)
French (fr)
Other versions
EP0156189A2 (en
EP0156189A3 (en
Inventor
Paul Baumann
Reinhard Appel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brunnquell Fabrik Electrotechnischer Apparate GmbH
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Brunnquell Fabrik Electrotechnischer Apparate GmbH
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Publication date
Application filed by Brunnquell Fabrik Electrotechnischer Apparate GmbH filed Critical Brunnquell Fabrik Electrotechnischer Apparate GmbH
Priority to AT85102371T priority Critical patent/ATE56108T1/en
Publication of EP0156189A2 publication Critical patent/EP0156189A2/en
Publication of EP0156189A3 publication Critical patent/EP0156189A3/en
Application granted granted Critical
Publication of EP0156189B1 publication Critical patent/EP0156189B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58Means 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
    • H01R13/595Bolts operating in a direction transverse to the cable or wire

Definitions

  • the invention relates to a plug or a plug coupling with the features listed in the preamble of claim 1 and 11 and is based on DE-A-20 48 507.
  • the strain relief clamp is braced by two tensioning screws acting on its two ends against the base for the electrical supply line arranged on the base body, the electrical supply line being arranged between the two tensioning screws.
  • the clamping screws of such conventionally designed strain relief clamps have a relatively short screw-in length.
  • at least one of the two tensioning screws is therefore completely unscrewed from the base body - particularly by less experienced DIY enthusiasts - for inserting the electrical supply line in the strain relief device.
  • this clamping screw can easily be lost.
  • the strain relief device becomes unstable. Your assembly and return to the clamping position then requires a certain level of manual dexterity.
  • a connector housing is known in which the strain relief clamp forms part of the connector housing or its rear side facing away from the support base forms part of the outer surface of the housing.
  • Three sides of the strain relief clamp are connected to the surrounding outer wall by thin spray skins, while the fourth side of the clamp is fully connected to the housing wall.
  • the invention has for its object to design the strain relief device of a plug or a connector coupling of the type mentioned in such a way that the introduction of the electrical supply line and its fixing by voltage of the strain relief clamp are simplified, taking into account the safety requirements.
  • strain relief clamp in a shaft of the base body, which is displaceable in the clamping direction, gives a long clamping path.
  • the space available for accommodating the strain relief clamp and its fastening means within the housing of the plug or plug coupling is normally extremely limited.
  • the boundary of this space is formed by the inner walls of the cover cap or the base body.
  • the length of the clamping screws for the strain relief clamp must be adapted to these limited spatial conditions. Therefore, the clamping screws cannot be made to be of any length, so that they can be unscrewed so far without loosening your thread that the electrical cable can also be inserted with a voluminous insulating jacket between the base on the base body and the strain relief clamp.
  • the space available for the tensioning path of the strain relief clamp or for the accommodation of the length of its tensioning screws can be extended by at least the wall thickness of the base body or the cover cap, which in the conventional embodiments prevents the accommodation of longer tensioning screws.
  • the housing size with regard to the accommodation of all connection parts can be minimized by the inventive design of the strain relief clamp as a housing part. This results in a particularly low overall height of such a plug or plug coupling. This is associated with a corresponding saving in material.
  • the characterizing part of claim 2 is directed to the fact that, in a completely unusual manner, the clamping screws are not screwed into the base body with their thread but, conversely, with their thread into the strain relief clamp, from the inside to the outside.
  • the design feature of claim 3 teaches a structurally advantageous arrangement of the shaft opening. This is from the access side of the plug or the Plug coupling facing away on the plug pin or socket side of the base body. This also provides the conditions for the edge earthing bracket to simultaneously form a loss protection device for the strain relief clamp (claim 4).
  • strain relief clamp remains captive on the base body of the housing.
  • the support base for the electrical supply line is formed by the arch of a portal, which is set up on a base body wall, expediently integrally connected to it, for example injection molded from plastic. Due to the characterizing feature of claim 6, a relatively long guidance of the clamping screws for the strain relief clamp on the base body is possible. Since the strain relief clamp is guided in a longitudinally displaceable manner on the base body, this long guide also facilitates the “threading in” or screwing in of the tensioning screws in the event that they are completely released from their thread engagement with the strain relief clamp. This long guide ensures that the screw-in ends of the clamping screws are always aligned with the threaded holes of the strain relief clamp.
  • the portal-like design of the structural part and the screwing-in direction of the clamping screws from the top of the portal, i.e. from the underside of the U-shape, has the further advantage that the strain relief clamp can be pushed down into its extreme relaxed position, in which its further displacement, via the tensioning screws still engaged, in order to introduce an electrical supply line of a relatively large outside diameter is blocked in the relaxation direction, for example by the edge earthing clip.
  • the strain relief clamp automatically stops without having to be held in its open position by hand when the electrical supply line is inserted, as is the case with conventional strain relief clamps.
  • the vertical leg of the strain relief clamp is guided in a longitudinally displaceable manner as a pressure part between the two portal columns.
  • a bending moment is exerted on the mounting part, which in conventional plugs or plug couplings is achieved by a correspondingly thick-walled design of this mounting part is caught.
  • this can be omitted, since the deflection movement of the portal columns is prevented by the T-horizontal leg of the strain relief clamp in between. Accordingly, a thin-walled construction of the structural part is possible without loss of strength.
  • a further advantage is the possibility of providing the bracing device with only a single tensioning screw by such an arrangement, since due to the clean guidance of the strain relief clamp by the portal columns, a secure fixation of the connecting line is nevertheless ensured.
  • the marking feature of claim 10 enables a material-saving production of the strain relief clamp.
  • the edge of the cavity creates a certain positive engagement on the surface of the insulating sheath of the electrical lead, which improves the strain relief effect.
  • the plug or the plug coupling is designed as an angled plug or angled plug coupling.
  • the tensioning screws of the strain relief clamp run in the longitudinal direction of the plug pins or plug pin sleeves, in which the housing offers the largest possible accommodation space.
  • the mounting screw is arranged eccentrically.
  • the grounding bracket forms a washer for the mounting screw. Due to the characterizing features of claims 16-20, the housing can be designed in accordance with the characterizing feature of claim 27, in spite of the necessary narrowing of the spatial conditions within the housing.
  • This design is particularly advantageous in the case of angled plugs, because such plugs can also be inserted into socket strips in a number corresponding to the number of existing plug entries, the plug receptacles of which are arranged very close to one another and have hitherto only been used for inserting central plugs or angled plugs in a version pre-assembled with the supply line but not suitable for retrofitting.
  • the characterizing features of claims 21-26 describe advantageous configurations of a plug coupling, which ensure a safe connection with cleanly separated functional spaces for the two sockets and the ground connection.
  • the characterizing feature of claim 26 describes a partition which has a double function. It serves as a wall for the receptacle of the sockets, and at the same time it is a guide surface for the strain relief clamp.
  • the insulating housing of the plug or the plug coupling consists of the base body 2 designed as a holder for the plug pins 1 or the sockets 1 'and the cover cap 3 covering the line connections 4 on the base body 2.
  • the plug or the coupling is with a total of 5 designated strain relief device for the electrical lead, not shown.
  • the electrical supply line can be inserted through the lateral recess 6 of the cover cap 3 into the interior of the connector housing.
  • the strain relief device 5 consists of a support base 7 arranged on the base body 2 and a strain relief clamp 8 which can be braced against the support base 7.
  • the strain relief clamp 8 passes through the outer wall of the housing, its rear side 39 facing away from the support base 7 forming part of the outer surface of the housing (FIGS.
  • the strain relief clamp 8 is guided in a longitudinal guide formed by the base body 2 and running in the tensioning direction 9. At least the part of the strain relief clamp 8 adjoining its rear wall 39 is arranged displaceably within a shaft 10, the side walls 11 of which are formed from housing insulating material, more precisely from the material of the base body 2.
  • an edge earthing bracket 12 fastened to the base body 2 forms a limit stop which protrudes into the displacement path of the strain relief clamp 8 against the direction of tension 9.
  • the inside 13 of the base body base 14 carries an approximately portal-shaped construction part 15 (FIGS. 3, 8) which is upside down in relation to the portal shape and forms the support base 7 for the electrical supply line, not shown.
  • the strain relief clamp 8 is with its pressure part 16 against the inside of the portal arch of the mounting part 15, i.e. thus can be braced against the support base 7 in the tensioning direction 9.
  • the two portal columns 17, 18 of the mounting part 15 are each in their longitudinal direction in the longitudinal direction of the plug pins 1 or sockets 1 'of one from the underside of the portal, i.e. with respect to FIGS. 3 and 8, screwed through from above tension screw 19 and 20 for the strain relief clamp 8.
  • the screw heads 21 of the clamping screws 19, 20 are arranged recessed in the mounting part 15.
  • the left half in FIGS. 8 and 3, in extreme relief and in FIG. 3, right half, in the extreme clamping and displacement position, the strain relief clamp 8 has the cross-sectional shape of an inverted T, for example.
  • the vertical leg 22 of the T (FIGS. 3, 8) lies as a pressure part 16 between the portal columns 17, 18 of the mounting part 15.
  • the two clamping screws 19, 20 are in the two horizontal leg parts 23 of the strain relief clamp 8 located next to the vertical leg 22 from the vertical leg side screwable here.
  • the pressure part 16 of the strain relief clamp 8 which acts on the electrical supply line is hollow (not shown in FIG. 3) and faces the load side, i.e. open to the shelf 7.
  • the plug or the plug coupling is designed as an angular plug connection with a feed line (recess 6) inserted approximately at right angles to the insertion direction.
  • the base body base 14 is provided on a side adjacent to the connector plane spanned by the two plug pins 1 or sockets 1 ′ with the recess designed as a shaft 10 for receiving the strain relief clamp 8.
  • the shaft exit is bridged by the part of the edge earthing bracket 12 lying on or in the base body base 14.
  • the base body base 14 is provided on its inside with a partition wall 24 which runs parallel to the plug level, projects into the interior of the housing and lies between the plug level and the displacement path (direction of tension 9) of the strain relief clamp 8.
  • the upper edge of the partition is hollowed out in the connector analogous to the surface of the pressure part 16 of the strain relief clamp 8.
  • a mounting screw 25 is provided in (not shown in the shaft recess (shaft 10) in (Fig. 6, 9) or next to (Fig. 1, 5))
  • Part of the base body base 14 lying on the plug pin level - penetrating it from the outside - can be screwed into the cover cap 3.
  • the screw head 26 of the mounting screw lies on the edge earthing bracket 12, which in turn lies in a recess on the outside of the base body base 14.
  • the portal level of the mounting part 15 runs approximately parallel to the plug level next to this.
  • the insertion opening (recess 6) for the electrical supply line is arranged in the wall area of the cover cap 3 lying next to the structural part 15.
  • the base body base 14 is provided on its inside with an inwardly projecting sleeve 28 containing the screw-in hole 27 for the mounting screw 25.
  • the base body 2 contains, in addition to the sleeve 28, between the latter and the adjacent side wall of the cap 3, a wall reinforcement 29, on the back of which the edge earthing bracket rests with its end 30 (FIG. 1).
  • the grounding screw 31 of the electrical feed line can be screwed into the wall reinforcement 29. The screwing direction is directed against the tensioning direction 9.
  • a tab 14 is formed on the side of the edge earthing bracket 12, which is bent in the tensioning direction 9 and extends through the base body base 14. The free end of this tab is penetrated by the grounding screw 31 in a plane parallel to the plug plane in the direction perpendicular to the tensioning direction 9.
  • the protrusion height of the grounding screw 31 over the inside of the base body base 14 is significantly smaller than the corresponding protrusion height of the mounting part 15.
  • the substantially flat base 32 of the cover cap 3 forms an acute angle 33 (FIGS. 4, 6), one leg of which is shown in FIG 34 is inclined towards the side of the grounding screw 31 away from the plug level.
  • the intermediate walls 41 extending from the plane of the base body base 14 in the tensioning direction 9 each form, together with the partition 24, a cuboid-shaped receiving space 42 open at the top for the connecting device 43.
  • This consists of the socket T, a connecting bracket 44 and the connecting screw 45.
  • the connecting bracket 44 rests on three sides on the inner wall of the receiving space 42, it is penetrated by the connecting screw 45 from the side of the grounding screw 31 together with the intermediate wall 41 lying next to it.
  • the free ends 46 of the connecting bracket 44 are bent towards each other and form the socket 1 '.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Pens And Brushes (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Joints Allowing Movement (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

1. Plug or connector plug with an electric line, a shell made of insulating material, consisting of a basic body (2) serving as support for the plug pins (1) or plug jacks (1'), and a covering cap (3) covering the line connections (4) on the basic body (2), as well as a strain relief device (5) for the electric line, consisting of a bearing base (7) arranged on the basic body, and a strain relief clamp (8) that can be fastened against the bearing base (7), and which traverses the outside wall of the shell and whose rear side (39), opposed to the bearing base (7), is a part of the outer surface of the shell, characterized in that at least the part of the strain relief clamp (8) which is adjacent to the rear side (39) and opposed to the bearing base (7), is arranged, in a displaceable manner and with longitudinal guidance in the direction of fastening inside a shaft (10) of the basic body (2).

Description

Die Erfindung betrifft einen Stecker oder eine Steckerkupplung mit den im Oberbegriff des Anspruches 1 bzw. 11 aufgeführten Merkmalen und geht von der DE-A-20 48 507 aus.The invention relates to a plug or a plug coupling with the features listed in the preamble of claim 1 and 11 and is based on DE-A-20 48 507.

Bei bekannten Steckern oder Steckerkupplungen wird die Zugentlastungsschelle durch zwei auf ihre beiden Enden einwirkende Spannschrauben gegen den am Grundkörper angeordneten Auflageboden für die elektrische Zuleitung verspannt, wobei die elektrische Zuleitung zwischen den beiden Spannschrauben angeordnet ist. Aus platzbedingten, baulichen Gründen weisen die Spannschrauben derartiger herkömmlich ausgebildeter Zugentlastungsschellen eine verhältnismäßig kurze Einschraublänge auf. Um die elektrische Zuleitung sicher in der Zugentlastungsschelle festlegen zu können, wird daher - insbesondere von weniger geübtene Heimwerkern - zum Einlegen der elektrischen Zuleitung in die Zugentlastungseinrichtung mindestens eine der beiden Spannschrauben vollständig aus dem Grundkörper herausgeschraubt. Dadurch kann diese Spannschraube leicht verlorengehen. Außerdem wird durch das vollständige Ausschrauben mindestens einer der beiden Spannschrauben die Zugentlastungseinrichtung labil. Ihre Montage und Wiederzurückführung in die Spannstellung erfordert dann eine gewisse handwerkliche Geschicklichkeit.In known plugs or plug couplings, the strain relief clamp is braced by two tensioning screws acting on its two ends against the base for the electrical supply line arranged on the base body, the electrical supply line being arranged between the two tensioning screws. For space-related, structural reasons, the clamping screws of such conventionally designed strain relief clamps have a relatively short screw-in length. In order to be able to securely fix the electrical supply line in the strain relief clamp, at least one of the two tensioning screws is therefore completely unscrewed from the base body - particularly by less experienced DIY enthusiasts - for inserting the electrical supply line in the strain relief device. As a result, this clamping screw can easily be lost. In addition, by completely unscrewing at least one of the two clamping screws, the strain relief device becomes unstable. Your assembly and return to the clamping position then requires a certain level of manual dexterity.

Aus der DE-A-20 48 507 ist ein Steckergehäuse bekannt, bei dem die Zugentlastungsschelle einen Teil des Steckergehäuses bzw. deren dem Auflageboden abgewandte Rückseite einen Teil der Gehäuseaußenfläche bildet. Drei Seiten der Zugentlastungsschelle stehen über dünne Spritzhäute in Verbindung mit der umliegenden Gehäuseaußenwand, während die vierte Schellenseite in voller Stärke mit der Gehäusewandung verbunden ist. Beim Eindrehen der die Zugentlastungsschelle durchgreifenden Spannschrauben werden die Spritzhäute zwischen der Schelle und der Gehäusewand aufgetrennt und die Schelle unter Beaufschlagung der unter ihr liegenden elektrischen Zuleitung in das Gehäuse hinein verkippt.From DE-A-20 48 507 a connector housing is known in which the strain relief clamp forms part of the connector housing or its rear side facing away from the support base forms part of the outer surface of the housing. Three sides of the strain relief clamp are connected to the surrounding outer wall by thin spray skins, while the fourth side of the clamp is fully connected to the housing wall. When the tensioning screws penetrating the strain relief clamp are screwed in, the spray skins are separated between the clamp and the housing wall and the clamp is tilted into the housing while acting on the electrical supply line below it.

Nachteilig ist dabei, daß ein nur sehr geringer Spannweg zur Verfügung steht. Darüber hinaus ist es durch ein starkes Verkippen der Schelle bei besonders dünnen Zuleitungen möglich, daß zwischen der Schelle und der ihr zugewandten Gehäusekante ein Spalt entsteht, durch den das Gehäuseinnere des Steckers zugänglich ist. Dies mag bei Steckergehäusen für Nachrichtenstecker wegen der geringen Spannungen unkritisch sein, bei Netzsteckern jedoch muß diese Möglichkeit zuverlässig ausgeschaltet sein.The disadvantage here is that only a very small span is available. In addition, by strongly tilting the clamp with particularly thin feed lines, it is possible that a gap is created between the clamp and the housing edge facing it, through which the interior of the connector is accessible. This may not be critical in the case of connector housings for message connectors because of the low voltages, but this option must be reliably switched off for power connectors.

Der Erfindung liegt die Aufgabe zugrunde, die Zugentlastungseinrichtung eines Steckers oder einer Steckerkupplung der eingangs genannten Art so auszubilden, daß das Einführen der elektrischen Zuleitung und deren Festlegung durch Spannung der Zugentlastungsschelle unter Beachtung der sicherheitstechnischen Anforderungen vereinfacht werden.The invention has for its object to design the strain relief device of a plug or a connector coupling of the type mentioned in such a way that the introduction of the electrical supply line and its fixing by voltage of the strain relief clamp are simplified, taking into account the safety requirements.

Diese Aufgabe wird durch die im Kennzeichen des Anspruches 1 bzw. 11 enthaltenen Merkmale gelöst.This object is achieved by the features contained in the characterizing part of claim 1 and 11, respectively.

Durch die in Spannrichtung verschiebbare Anordnung der Zugentlastungsschelle in einem Schacht des Grundkörpers ist zum einen ein langer Spannweg gegeben. Dies bedeutet, daß sowohl sehr dünne elektrische Zuleitungen, beispielsweise mit lediglich zwei Adern, als auch dreiadrige Leitungen mit einer dicken Isolierummantelung gleichermaßen durch die Zugentlastungseinrichtung fixierbar sind. Durch die Längsführung der Zugentlastungsschelle im Schacht und dem damit verbundenen, formschlüssigen Umgriff der Schachtwände um den geführten Teil der Schelle entstehen keine Spalte oder Zwischenräume zwischen dem Grundkörper und der Schelle, durch die der Gehäuseinnenraum von außen zugänglich wäre. Die hermetische Abschließung des Gehäuseinnenraumes mit den dort teilweise unisoliert freiliegenden Adern der elektrischen Zuleitung bleibt also voll aufrechterhalten.The arrangement of the strain relief clamp in a shaft of the base body, which is displaceable in the clamping direction, gives a long clamping path. This means that both very thin electrical supply lines, for example with only two wires, and three-wire lines with a thick insulating jacket can be fixed equally by the strain relief device. Due to the longitudinal guidance of the strain relief clamp in the shaft and the associated positive engagement of the shaft walls around the guided part of the clamp, there are no gaps or spaces between the base body and the clamp, through which the interior of the housing would be accessible from the outside. The hermetic sealing of the housing interior with the partially uninsulated exposed wires of the electrical supply line is therefore fully maintained.

Darüber hinaus ist normalerweise mit der zur Unterbringung der Zugentlastungsschelle und ihrer Befestigungsmittel innerhalb des Gehäuses von Stecker oder Steckerkupplung vorhandene Raum äußerst begrenzt. Die Begrenzung dieses Raumes wird durch die Innenwände der Abdeckkappe oder des Grundkörpers gebildet. Die Länge der Spannschrauben für die Zugentlastungsschelle muß diesen begrenzten räumlichen Gegebenheiten angepaßt werden. Daher lassen sich die Spannschrauben nicht beliebig lang ausführen, so daß sie ohne Lösung Ihres Gewindeeingriffes am Grundkörper so weit herausgeschraubt werden können, daß die elektrische Zuleitung auch mit einer voluminösen Isolierummantelung zwischen Auflageboden am Grundkörper und Zugentlastungsschelle einschiebbar ist. Durch die Erfindung kann der für den Spannweg der Zugentlastungsschelle bzw. für die Unterbringung der Länge ihrer Spannschrauben zur Verfügung stehende Raum um mindestens die Wandstärke des Grundkörpers oder der Abdeckkappe verlängert werden, die bei den herkömmlichen Ausführungsformen gerade der Unterbringung längerer Spannschrauben im Wege stehen.In addition, the space available for accommodating the strain relief clamp and its fastening means within the housing of the plug or plug coupling is normally extremely limited. The boundary of this space is formed by the inner walls of the cover cap or the base body. The length of the clamping screws for the strain relief clamp must be adapted to these limited spatial conditions. Therefore, the clamping screws cannot be made to be of any length, so that they can be unscrewed so far without loosening your thread that the electrical cable can also be inserted with a voluminous insulating jacket between the base on the base body and the strain relief clamp. Through the invention, the space available for the tensioning path of the strain relief clamp or for the accommodation of the length of its tensioning screws can be extended by at least the wall thickness of the base body or the cover cap, which in the conventional embodiments prevents the accommodation of longer tensioning screws.

Außerdem ist die Gehäusegröße hinsichtlich der Unterbringung aller Anschlußteile durch die erfindungsgemäße Ausbildung der Zugentlastungsschelle als Gehäuseteil minimierbar. Dies bewirkt eine besonders geringe Bauhöhe eines solchen Steckers oder Steckerkupplung. Damit ist eine entsprechende Materialersparnis verbunden.In addition, the housing size with regard to the accommodation of all connection parts can be minimized by the inventive design of the strain relief clamp as a housing part. This results in a particularly low overall height of such a plug or plug coupling. This is associated with a corresponding saving in material.

Das Kennzeichen des Anspruches 2 ist darauf gerichtet, daß in völlig unüblicher Weise die Spannschrauben nicht mit ihrem Gewinde in den Grundkörper sondern umgekehrt mit ihrem Gewinde in die Zugentlastungsschelle eingeschraubt sind und zwar von innen nach außen.The characterizing part of claim 2 is directed to the fact that, in a completely unusual manner, the clamping screws are not screwed into the base body with their thread but, conversely, with their thread into the strain relief clamp, from the inside to the outside.

Durch das Kennzeichnungsmerkmal des Anspruches 3 wird eine konstruktiv vorteilhafte Anordnung der Schachtöffnung gelehrt. Diese liegt von der Zugriffsseite des Steckers oder der Steckerkupplung abgewandt auf der Steckerstift- bzw. Steckbuchsenseite des Grundkörpers. Damit sind darüber hinaus die Voraussetzungen dafür gegeben, daß der Randerdungsbügel gleichzeitig eine Verliersicherung für die Zugentlastungsschelle (Anspruch 4) bilden kann.The design feature of claim 3 teaches a structurally advantageous arrangement of the shaft opening. This is from the access side of the plug or the Plug coupling facing away on the plug pin or socket side of the base body. This also provides the conditions for the edge earthing bracket to simultaneously form a loss protection device for the strain relief clamp (claim 4).

Sollten beispielsweise durch unnötige oder unachtsame Handhabung beide Spannschrauben aus ihrem Gewindeeingriff an der Zugentlastungsschelle gelöst werden, bleibt die Zugentlastungsschelle unverlierbar am Grundkörper des Gehäuses gehalten.If, for example, both clamping screws are loosened from their thread engagement on the strain relief clamp due to unnecessary or careless handling, the strain relief clamp remains captive on the base body of the housing.

Durch das Kennzeichnungsmerkmal des Anspruches 5 ist der Auflageboden für die elektrische Zuleitung durch das Gewölbe eines Portals gebildet, welches auf eine Grundkörperwand aufgestellt, zweckmäßigerweise einstückig mit dieser verbunden, beispielsweise aus Kunststoff gespritzt ist. Durch das Kennzeichnungsmerkmal des Anspruches 6 ist eine verhältnismäßig lange Führung der Spannschrauben für die Zugentlastungsschelle am Grundkörper möglich. Da die Zugentlastungsschelle längsverschiebbar am Grundkörper geführt ist, erleichtert diese lange Führung auch das "Einfädeln" bzw. Einschrauben der Spannschrauben für den Fall, daß sie einmal vollständig aus ihrem Gewindeeingriff mit der Zugentlastungsschelle gelöst werden. Durch diese lange Führung ist nämlich sichergestellt, daß die Einschraubenden der Spannschrauben immer in Überdeckung mit den Gewindelöchern der Zugentlastungsschelle stehen. Die portalartige Ausbildung des Aufbauteiles sowie die Einschraubrichtung der Spannschrauben von der Oberseite des Portals, d.h. von der Unterseite der U-Form her, hat den weiteren Vorteil, daß zur Einführung einer elektrischen Zuleitung von relativ großem Außendurchmesser die Zugentlastungsschelle über die noch mit ihr in Eingriff stehenden Spannschrauben nach unten in ihre extreme Entspannungsstellung gestoßen werden kann, in der ihre weitere Verschiebung in Entspannungsrichtung beispielsweise durch den Randerdungsbügel blockiert ist. In dieser extremen Entspannungsstellung bleibt die Zugentlastungsschelle selbsttätig stehen, ohne daß sie - wie bei herkömmlichen Zugentlastungsschellen notwendig - von Hand bei der Einführung der elektrischen Zuleitung in ihrer Offenstellung gehalten werden muß.Due to the characterizing feature of claim 5, the support base for the electrical supply line is formed by the arch of a portal, which is set up on a base body wall, expediently integrally connected to it, for example injection molded from plastic. Due to the characterizing feature of claim 6, a relatively long guidance of the clamping screws for the strain relief clamp on the base body is possible. Since the strain relief clamp is guided in a longitudinally displaceable manner on the base body, this long guide also facilitates the “threading in” or screwing in of the tensioning screws in the event that they are completely released from their thread engagement with the strain relief clamp. This long guide ensures that the screw-in ends of the clamping screws are always aligned with the threaded holes of the strain relief clamp. The portal-like design of the structural part and the screwing-in direction of the clamping screws from the top of the portal, i.e. from the underside of the U-shape, has the further advantage that the strain relief clamp can be pushed down into its extreme relaxed position, in which its further displacement, via the tensioning screws still engaged, in order to introduce an electrical supply line of a relatively large outside diameter is blocked in the relaxation direction, for example by the edge earthing clip. In this extreme relaxation position, the strain relief clamp automatically stops without having to be held in its open position by hand when the electrical supply line is inserted, as is the case with conventional strain relief clamps.

Gemäß dem Kennzeichnungsmerkmal des Anspruches 8 ist der Vertikalschenkel der Zugentlastungsschelle als Druckteil zwischen den beiden Portalsäulen längsverschiebbar geführt, Durch die Einklemmung der Anschlußleitung zwischen Druckteil und Auflageboden wird auf das Aufbauteil ein Biegemoment ausgeübt, welches bei herkömmlichen Steckern oder Steckerkupplungen durch eine entsprechend dickwandige Ausbildung dieses Aufbauteiles aufgefangen wird. Dies kann jedoch entfallen, da die Durchbiegebewegung der Portalsäulen durch den dazwischenliegenden T-Horizontalschenkel der Zugentlastungsschelle verhindert wird. Entsprechend ist eine dunnwandige Ausbildung des Aufbauteils ohne Festigkeitsverlust moglich. Als weiterer Vorteil ergibt sich die Möglichkeit, durch eine derartige Anordnung die Verspanneinrichtung nur mit einer einzigen Spannschraube zu versehen, da aufgrund der sauberen Führung der Zugentlastungsschelle durch die Portalsäulen trotzdem eine sichere Fixierung der Anschlußleitung gewährleistet ist.According to the characterizing feature of claim 8, the vertical leg of the strain relief clamp is guided in a longitudinally displaceable manner as a pressure part between the two portal columns. By clamping the connecting line between the pressure part and the support base, a bending moment is exerted on the mounting part, which in conventional plugs or plug couplings is achieved by a correspondingly thick-walled design of this mounting part is caught. However, this can be omitted, since the deflection movement of the portal columns is prevented by the T-horizontal leg of the strain relief clamp in between. Accordingly, a thin-walled construction of the structural part is possible without loss of strength. A further advantage is the possibility of providing the bracing device with only a single tensioning screw by such an arrangement, since due to the clean guidance of the strain relief clamp by the portal columns, a secure fixation of the connecting line is nevertheless ensured.

Durch das Kennzeichnungsmerkmal des Anspruches 10 ist eine werkstoffsparende Herstellung der Zugentlastungsschelle möglich. Außerdem wird durch die Randkanten der Aushöhlung ein gewisser Formschlußeingriff an der Oberfläche der Isolierumhüllung der elektrischen Zuleitung geschaffen, der die Zugentlastungswirkung verbessert.The marking feature of claim 10 enables a material-saving production of the strain relief clamp. In addition, the edge of the cavity creates a certain positive engagement on the surface of the insulating sheath of the electrical lead, which improves the strain relief effect.

Durch die Kennzeichnungsmerkmale des Anspruches 11 ist es möglich, den Stecker bzw. die Steckerkupplung als Winkelstecker bzw. Winkelsteckerkupplung auszubilden. Durch diese Ausführungsform verlaufen die Spannschrauben der Zugentlastungsschelle in Längsrichtung der Steckerstifte bzw. Steckerstifthülsen, in der das Gehäuse einen größtmöglichen Unterbringungsraum bietet. Gemäß dem Kennzeichnungsmerkmal des Anspruches 13 ist die Montageschraube exzentrisch angeordnet. Gemäß Kennzeichnungsmerkmal des Anspruches 15 bildet der Erdungsbügel gewissermaßen eine Unterlegscheibe für die Montageschraube. Durch die Kennzeichnungsmerkmale der Ansprüche 16-20 ist die Gehäuseausbildung gemäß Kennzeichnungsmerkmal des Anspruches 27 trotz der dadurch notwendigen Beengung der Raumverhältnisse innerhalb des Gehäuses möglich. Diese Ausbildung ist besonders bei Winkelsteckern vorteilhaft, weil solche dadurch auch in einer der Anzahl vorhandener Steckereinführungen entsprechenden Anzahl in Steckdosenleisten einfuhrbar sind, deren Steckeraufnahmen sehr nahe nebeneinander angeordnet sind und sich bisher nur zum Einstecken von Zentralsteckern oder von Winkelsteckern in mit der Zuleitung vormontierter Ausführung, nicht aber in nachträglich montierbarer Ausführung eignen.Due to the characterizing features of claim 11, it is possible to design the plug or the plug coupling as an angled plug or angled plug coupling. As a result of this embodiment, the tensioning screws of the strain relief clamp run in the longitudinal direction of the plug pins or plug pin sleeves, in which the housing offers the largest possible accommodation space. According to the characterizing feature of claim 13, the mounting screw is arranged eccentrically. According to the characterizing feature of claim 15, the grounding bracket forms a washer for the mounting screw. Due to the characterizing features of claims 16-20, the housing can be designed in accordance with the characterizing feature of claim 27, in spite of the necessary narrowing of the spatial conditions within the housing. This design is particularly advantageous in the case of angled plugs, because such plugs can also be inserted into socket strips in a number corresponding to the number of existing plug entries, the plug receptacles of which are arranged very close to one another and have hitherto only been used for inserting central plugs or angled plugs in a version pre-assembled with the supply line but not suitable for retrofitting.

Die Kennzeichnungsmerkmale der Ansprüche 21-26 beschreiben vorteilhafte Ausbildungen einer Steckerkupplung, die ein sicheres Anschließen mit sauber getrennten Funktionsräumen für die beiden Steckbuchsen und den Erdungsanschluß gewährleisten. Durch das Kennzeichnungsmerkmal des Anspruches 26 wird eine Trennwand beschrieben, die eine Doppelfunktion ausübt. Sie dient als Wand für den Aufnahmeraum der Steckbuchsen, gleichzeitig ist sie Führungsfläche für die Zugentlastungsschelle.The characterizing features of claims 21-26 describe advantageous configurations of a plug coupling, which ensure a safe connection with cleanly separated functional spaces for the two sockets and the ground connection. The characterizing feature of claim 26 describes a partition which has a double function. It serves as a wall for the receptacle of the sockets, and at the same time it is a guide surface for the strain relief clamp.

Der Gegenstand der Erfindung wird anhand eines in den Figuren dargestellten Ausführungsbeispieles eines Winkelsteckers näher erläutert.The object of the invention is explained in more detail using an exemplary embodiment of an angled plug shown in the figures.

Es zeigen:

  • Fig. 1 einen rechtwinklig zur Steckerebene verlaufenden Längsschnitt durch einen Stecker entsprechend der Schnittlinie I-I in Fig. 2,
  • Fig. 2 einen Querschnitt entsprechend der Linie 11-11 in Fig. 1,
  • Fig. 3 einen Längsschnitt entsprechend der Linie III-III in Fig. 2 durch das Steckergehäuse,
  • Fig. 4 eine Seitenansicht des Steckers in teilweise aufgebrochener Darstellung entsprechend Pfeil IV in Fig. 2,
  • Fig. 5 eine Frontansicht des Steckers entsprechend Pfeil V in Fig. 4,
  • Fig. 6 einen rechtwinklig zur Steckerebene verlaufenden Längsschnitt durch eine Steckerkupplung entsprechend der Schnittlinie VI-VI in Fig. 7,
  • Fig. 7 einen Querschnitt entsprechend der Linie VII-VII in Fig. 6,
  • Fig. 8 einen Längsschnitt entsprechend der Linie VIII-VIII in Fig. 7 durch das Steckerkupplungsgehäuse,
  • Fig. 9 eine Frontansicht der Steckerkupplung entsprechend Pfeil IX in Fig. 6.
Show it:
  • 1 is a longitudinal section perpendicular to the connector plane through a connector corresponding to section line II in Fig. 2,
  • 2 shows a cross section along the line 11-11 in Fig. 1,
  • 3 shows a longitudinal section along the line III-III in FIG. 2 through the plug housing,
  • 4 shows a side view of the plug in a partially broken-open representation according to arrow IV in FIG. 2,
  • 5 is a front view of the connector according to arrow V in Fig. 4,
  • 6 shows a longitudinal section running at right angles to the plug level through a plug coupling corresponding to the section line VI-VI in FIG. 7,
  • 7 shows a cross section along the line VII-VII in FIG. 6,
  • 8 shows a longitudinal section along the line VIII-VIII in FIG. 7 through the plug coupling housing,
  • 9 shows a front view of the plug coupling according to arrow IX in FIG. 6.

Das Isolierstoffgehäuse des Steckers bzw. der Steckerkupplung besteht aus dem als Halter für die Steckerstifte 1 bzw. die Steckbuchsen l' ausgebildeten Grundkörper 2 und der die Leitungsanschlüsse 4 am Grundkörper 2 abdeckenden Abdeckkappe 3. Der Stecker bzw. die -kupplung ist mit einer insgesamt mit 5 bezeichneten Zugentlastungseinrichtung für die nicht dargestellte elektrische Zuleitung versehen. Die elektrische Zuleitung ist durch die seitliche Ausnehmung 6 der Abdeckkappe 3 in den Innenraum des Steckergehäuses einführbar. Die Zugentlastungseinrichtung 5 besteht aus einem am Grundkörper 2 angeordneten Auflageboden 7 und einer gegen den Auflageboden 7 verspannbaren Zugentlastungsschelle 8. Die Zugentlastungsschelle 8 durchsetzt die Außenwand des Gehäuses, wobei ihre dem Auflageboden 7 abgewandte Rückseite 39 einen Teil der Gehäuseaußenfläche bildet (Fig. 1, 3, 5, 6, und 9). Die Zugentlastungsschelle 8 ist in einer durch den Grundkörper 2 gebildeten, in Verspannungsrichtung 9 verlaufenden Längsführung geführt. Mindestens der an ihre Rückwand 39 angrenzende Teil der Zugentlastungsschelle 8 ist innerhalb eines Schachtes 10 verschiebbar angeordnet, dessen Seitenwände 11 aus Gehäuse-Isolierwerkstoff, genauer gesagt durch den Werkstoff des Grundkörpers 2 gebildet sind.The insulating housing of the plug or the plug coupling consists of the base body 2 designed as a holder for the plug pins 1 or the sockets 1 'and the cover cap 3 covering the line connections 4 on the base body 2. The plug or the coupling is with a total of 5 designated strain relief device for the electrical lead, not shown. The electrical supply line can be inserted through the lateral recess 6 of the cover cap 3 into the interior of the connector housing. The strain relief device 5 consists of a support base 7 arranged on the base body 2 and a strain relief clamp 8 which can be braced against the support base 7. The strain relief clamp 8 passes through the outer wall of the housing, its rear side 39 facing away from the support base 7 forming part of the outer surface of the housing (FIGS. 1, 3 , 5, 6, and 9). The strain relief clamp 8 is guided in a longitudinal guide formed by the base body 2 and running in the tensioning direction 9. At least the part of the strain relief clamp 8 adjoining its rear wall 39 is arranged displaceably within a shaft 10, the side walls 11 of which are formed from housing insulating material, more precisely from the material of the base body 2.

Auf der dem Auflageboden 7 abgewandten Seite der Zugentlastungsschelle 8 bildet ein am Grundkörper 2 befestigter Randerdungsbügel 12 einen entgegen der Verspannungsrichtung 9 in den Verschiebeweg der Zugentlastungsschelle 8 hineinstehenden Begrenzungsanschlag. Die Innenseite 13 des Grundkörperbodens 14trägt ein etwa portalförmiges - bezogen auf die Portalform auf dem Kopf stehendes - Aufbauteil 15 (Fig. 3, 8), welches den Auflageboden 7 für die nicht dargestellte elektrische Zuleitung bildet.On the side of the strain relief clamp 8 facing away from the support base 7, an edge earthing bracket 12 fastened to the base body 2 forms a limit stop which protrudes into the displacement path of the strain relief clamp 8 against the direction of tension 9. The inside 13 of the base body base 14 carries an approximately portal-shaped construction part 15 (FIGS. 3, 8) which is upside down in relation to the portal shape and forms the support base 7 for the electrical supply line, not shown.

Die Zugentlastungsschelle 8 ist mit ihrem Druckteil 16 gegen die Innenseite des Portalbogens des Aufbauteiles 15, d.h. also gegen dessen Auflageboden 7 in Verspannungsrichtung 9 verspannbar. Die beiden Portalsäulen 17, 18 des Aufbauteils 15 sind in ihrer in Längsrichtung der Steckerstifte 1 bzw. Steckbuchsen 1' verlaufenden Längsrichtung von jeweils einer von der Unterseite des Portals, d.h. bezogen auf Fig. 3 bzw. 8 von oben her eingeschraubten Spannschraube 19 bzw. 20 für die Zugentlastungsschelle 8 durchsetzt. Dabei sind die Schraubenköpfe 21 der Spannschrauben 19, 20 versenkt im Aufbauteil 15 angeordnet. Die in Fig. 8 bzw. 3, linke Hälfte, in extremer Entlastungs- und in Fig. 3, rechte Hälfte, in extremer Spann-Verschiebestellung dargestellte Zugentlastungsschelle 8 weist die Querschnittsform etwa eines auf dem Kopf stehenden T auf. Dabei liegt der Vertikalschenkel 22 des T (Fig. 3, 8) als Druckteil 16 zwischen den Portalsäulen 17, 18 des Aufbauteils 15. Die beiden Spannschrauben 19, 20 sind in die beiden neben dem Vertikalschenkel 22 liegenden Horizontalschenkelteile 23 der Zugentlastungsschelle 8 von der Vertikalschenkelseite her einschraubbar.The strain relief clamp 8 is with its pressure part 16 against the inside of the portal arch of the mounting part 15, i.e. thus can be braced against the support base 7 in the tensioning direction 9. The two portal columns 17, 18 of the mounting part 15 are each in their longitudinal direction in the longitudinal direction of the plug pins 1 or sockets 1 'of one from the underside of the portal, i.e. with respect to FIGS. 3 and 8, screwed through from above tension screw 19 and 20 for the strain relief clamp 8. The screw heads 21 of the clamping screws 19, 20 are arranged recessed in the mounting part 15. The left half in FIGS. 8 and 3, in extreme relief and in FIG. 3, right half, in the extreme clamping and displacement position, the strain relief clamp 8 has the cross-sectional shape of an inverted T, for example. The vertical leg 22 of the T (FIGS. 3, 8) lies as a pressure part 16 between the portal columns 17, 18 of the mounting part 15. The two clamping screws 19, 20 are in the two horizontal leg parts 23 of the strain relief clamp 8 located next to the vertical leg 22 from the vertical leg side screwable here.

Der die elektrische Zuleitung beaufschlagende Druckteil 16 der Zugentlastungsschelle 8 ist hohl ausgebildet (nicht dargestellt in Fig. 3) und zur Beaufschlagungsseite, d.h. zum Auflageboden 7 hin offen.The pressure part 16 of the strain relief clamp 8 which acts on the electrical supply line is hollow (not shown in FIG. 3) and faces the load side, i.e. open to the shelf 7.

Der Stecker bzw. die Steckerkupplung ist als Winkelsteckverbindung mit etwa rechtwinklig zur Einsteckrichtung eingeführter Zuleitung (Ausnehmung 6) ausgebildet. Der Grundkörperboden 14 ist auf einer neben der von den beiden Steckerstiften 1 bzw. Steckbuchsen l' aufgespannten Stekkerebene liegenden Seite mit der als Schacht 10 ausgebildeten Ausnehmung zur Aufnahme der Zugentlastungsschelle 8 versehen. Der Schachtausgang ist von dem am oder im Grundkörperboden 14 liegenden Teil des Randerdungsbügels 12 überbrückt. Der Grundkörperboden 14 ist auf seiner Innenseite mit einer parallel zur Steckerebene verlaufenden, in das Gehäuseinnere hineinragenden und zwischen Steckerebene und Verschiebeweg (Verspannungsrichtung 9) der Zugentlastungsschelle 8 liegenden Trennwand 24 versehen. Die Oberkante der Trennwand ist beim Stecker analog der Oberfläche des Druckteils 16 der Zugentlastungsschelle 8 ausgemuldet. Zur in Axialrichtung (Verspannungsrichtung 9) erfolgenden Verschraubung von Grundkörper 2 und Abdeckkappe 3 ist eine Montageschraube 25 in den nicht mit der Schachtausnehmung (Schacht 10) versehenen, in (Fig. 6, 9) bzw. neben (Fig. 1, 5) der Steckerstiftebene liegenden Teil des Grundkörperbodens 14 - diesen von außen her durchgreifend - in die Abdeckkappe 3 einschraubbar. Der Schraubenkopf 26 der Montageschraube liegt dabei auf dem Randerdungsbügel 12 auf, weicher wiederum in einer Vertiefung der Außenseite des Grundkörperbodens 14 einliegt. Die Portalebene des Aufbauteiles 15 verläuft etwa parallel zur Steckerebene neben dieser.The plug or the plug coupling is designed as an angular plug connection with a feed line (recess 6) inserted approximately at right angles to the insertion direction. The base body base 14 is provided on a side adjacent to the connector plane spanned by the two plug pins 1 or sockets 1 ′ with the recess designed as a shaft 10 for receiving the strain relief clamp 8. The shaft exit is bridged by the part of the edge earthing bracket 12 lying on or in the base body base 14. The base body base 14 is provided on its inside with a partition wall 24 which runs parallel to the plug level, projects into the interior of the housing and lies between the plug level and the displacement path (direction of tension 9) of the strain relief clamp 8. The upper edge of the partition is hollowed out in the connector analogous to the surface of the pressure part 16 of the strain relief clamp 8. For the screwing of the base body 2 and the cover cap 3 in the axial direction (tensioning direction 9), a mounting screw 25 is provided in (not shown in the shaft recess (shaft 10) in (Fig. 6, 9) or next to (Fig. 1, 5)) Part of the base body base 14 lying on the plug pin level - penetrating it from the outside - can be screwed into the cover cap 3. The screw head 26 of the mounting screw lies on the edge earthing bracket 12, which in turn lies in a recess on the outside of the base body base 14. The portal level of the mounting part 15 runs approximately parallel to the plug level next to this.

Die Einführungsöffnung (Ausnehmung 6) für die elektrische Zuleitung ist in dem neben dem Aufbauteil 15 liegenden Wandbereich der Abdeckkappe 3 angeordnet. Der Grundkörperboden 14 ist auf seiner Innenseite mit einer nach innen vorstehenden, das Einschraubloch 27 für die Montageschraube 25 enthaltenden Hülse 28 versehen.The insertion opening (recess 6) for the electrical supply line is arranged in the wall area of the cover cap 3 lying next to the structural part 15. The base body base 14 is provided on its inside with an inwardly projecting sleeve 28 containing the screw-in hole 27 for the mounting screw 25.

Bei dem Stecker enthält der Grundkörper 2 neben der Hülse 28 zwischen dieser und der benachbarten Seitenwand der Abdeckkappe 3 eine Wandverstärkung 29, auf deren Rückseite der Randerdungsbügel mit seinem Ende 30 ruht (Fig. 1). In die Wandverstärkung 29 ist die Erdungsschraube 31 der elektrischen Zuleitung einschraubbar. Die Einschraubrichtung ist gegen die Verspannungsrichtung 9 gerichtet.In the plug, the base body 2 contains, in addition to the sleeve 28, between the latter and the adjacent side wall of the cap 3, a wall reinforcement 29, on the back of which the edge earthing bracket rests with its end 30 (FIG. 1). The grounding screw 31 of the electrical feed line can be screwed into the wall reinforcement 29. The screwing direction is directed against the tensioning direction 9.

Bei einer Steckerkupplung ist an den Randerdungsbügel 12 seitlich eine Lasche 14 angeformt, die in Verspannungsrichtung 9 umgebogen ist und den Grundkörperboden 14 durchgreift. Das Freiende dieser Lasche wird in einer Ebene parallel zur Steckerebene in senkrechter Richtung zur Verspannungsrichtung 9 von der Erdungsschraube 31 durchsetzt.In the case of a plug coupling, a tab 14 is formed on the side of the edge earthing bracket 12, which is bent in the tensioning direction 9 and extends through the base body base 14. The free end of this tab is penetrated by the grounding screw 31 in a plane parallel to the plug plane in the direction perpendicular to the tensioning direction 9.

Die Überstehhöhe der Erdungsschraube 31 über die Innenseite des Grundkörperbodens 14 ist wesentlich kleiner als die entsprechende Überstehhöhe des Aufbauteiles 15. Der im wesentlichen ebene Boden 32 der Abdeckkappe 3 bildet mit der Steckerebene einen spitzen Winkel 33 (Fig. 4, 6), dessen einer Schenkel 34 in Richtung auf die Seite der Erdungsschraube 31 von der Steckerebene weggeneigt ist.The protrusion height of the grounding screw 31 over the inside of the base body base 14 is significantly smaller than the corresponding protrusion height of the mounting part 15. The substantially flat base 32 of the cover cap 3 forms an acute angle 33 (FIGS. 4, 6), one leg of which is shown in FIG 34 is inclined towards the side of the grounding screw 31 away from the plug level.

In Fig. 7 ist die Kontaktierungsweise der Steckbuchsen l' dargestellt. Die aus der Ebene des Grundkörperbodens 14 in Verspannungsrichtung 9 verlaufenden Zwischenwände 41 bilden jeweils zusammen mit der Trennwand 24 einen quaderförmigen, oben offenen Aufnahmeraum 42 für die Anschlußeinrichtung 43. Diese besteht jeweils aus der Steckbuchse T, einem Anschlußbügel 44 und der Anschlußschraube 45. Der Anschlußbügel 44 liegt dreiseitig an der Innenwand des Aufnahmeraumes 42 an, er wird von der Seite der Erdungsschraube 31 her zusammen mit der danebenliegenden Zwischenwand 41 von der Anschlußschraube 45 durchgriffen. Die Freienden 46 des Anschlußbügels 44 sind einwärts aufeinander zugebogen und bilden die Steckbuchse 1'.7 shows the way of contacting the sockets 1 '. The intermediate walls 41 extending from the plane of the base body base 14 in the tensioning direction 9 each form, together with the partition 24, a cuboid-shaped receiving space 42 open at the top for the connecting device 43. This consists of the socket T, a connecting bracket 44 and the connecting screw 45. The connecting bracket 44 rests on three sides on the inner wall of the receiving space 42, it is penetrated by the connecting screw 45 from the side of the grounding screw 31 together with the intermediate wall 41 lying next to it. The free ends 46 of the connecting bracket 44 are bent towards each other and form the socket 1 '.

Wenngleich der Erfindungsgegenstand im Ausführungsbeispiel anhand eines Winkelsteckers bzw. -steckerkupplung dargestellt ist, kann doch die erfindungsgemäße Ausbildung der Zugentlastungseinrichtung auch in gleicher Weise bei einem Stecker oder einer Steckerkupplung verwirklicht sein, die als Zentralstecker bzw. Zentralkupplungsdose ausgebildet sind. Dann verläuft allerdings die Verspannungsrichtung 9 der Zugentlastungsschelle 8 rechtwinklig zur Steckerebene. Dann steht ein außerhalb des Grundkörperbodens 14 liegender Teil des Randerdungsbügels 12 in den Verschiebeweg der Zugentlastungsschelle 8 hinein und bildet dort die Verliersicherung bzw. den Begrenzungsanschlag. Bezugszeichenliste

  • 1 Steckerstift
  • l' Steckbuchse
  • 2 Grundkörper
  • 3 Abdeckkappe
  • 4 Leitungsanschluß
  • 5 Zugentlastungseinrichtung
  • 6 Ausnehmung
  • 7 Auflageboden
  • 8 Zugentlastungsschelle
  • 9 Verspannungsrichtung
  • 10 Schacht
  • 11 Seitenwand
  • 12 Randerdungsbügel
  • 13 Innenseite
  • 14 Grundkörperboden
  • 15 Aufbauteil
  • 16 Druckteil
  • 17 Portalsäule
  • 18 Portalsäule
  • 19 Spannschraube
  • 20 Spannschraube
  • 21 Schraubenkopf
  • 22 Vertikalschenkel
  • 23 Horizontalschenkelteil
  • 24 Trennwand
  • 25 Montageschraube
  • 26 Schraubenkopf
  • 27 Einschraubloch
  • 28 Hülse
  • 29 Wandverstärkung
  • 30 Ende
  • 31 Erdungsschraube
  • 32 Boden
  • 33 Winkel
  • 34 Schenkel
  • 39 Rückseite
  • 40 Lasche
  • 41 Zwischenwand
  • 42 Aufnahmeraum
  • 43 Anschlußeinrichtung
  • 44 Anschlußbügel
  • 45 Anschlußschraube
  • 46 Freienden
Although the subject matter of the invention is shown in the exemplary embodiment with the aid of an angled plug or plug connector, the design of the strain relief device according to the invention can also be implemented in the same way with a plug or a plug coupling which is designed as a central plug or a central coupling socket. Then, however, the direction of tension 9 of the strain relief clamp 8 runs at right angles to the plug level. Then a part of the edge earthing clip 12 lying outside the base body base 14 projects into the displacement path of the strain relief clamp 8 and forms the captive device or the limit stop there. Reference symbol list
  • 1 connector pin
  • l 'socket
  • 2 basic bodies
  • 3 cover cap
  • 4 line connection
  • 5 strain relief device
  • 6 recess
  • 7 shelf
  • 8 strain relief clamp
  • 9 Direction of tension
  • 10 shaft
  • 11 side wall
  • 12 edge earthing brackets
  • 13 inside
  • 14 base floor
  • 15 mounting part
  • 16 printed part
  • 17 portal column
  • 18 portal column
  • 19 clamping screw
  • 20 clamping screw
  • 21 screw head
  • 22 vertical legs
  • 23 horizontal leg part
  • 24 partition
  • 25 mounting screw
  • 26 screw head
  • 27 screw hole
  • 28 sleeve
  • 29 wall reinforcement
  • 30 end
  • 31 ground screw
  • 32 bottom
  • 33 angles
  • 34 legs
  • 39 back
  • 40 tab
  • 41 partition
  • 42 recording room
  • 43 connection device
  • 44 connection bracket
  • 45 connecting screw
  • 46 freeers

Claims (28)

1. Plug or connector plug with
an electric line,
a shell made of insulating material, consisting of
a basic body (2) serving as support for the plug pins (1) or plug jacks (1'), and
a covering cap (3) covering the line connections (4) on the basic body (2), as well as
a strain relief device (5) for the electric line, consisting of
a bearing base (7) arranged on the basic body, and
a strain relief clamp (8) that can be fastened against the bearing base (7),
and which traverses the outside wall of the shell and whose rear side (39), opposed to the bearing base (7), is a part of the outer surface of the shell,
characterized in that at least the part of the strain relief clamp (8) which is adjacent to the rear side (39) and opposed to the bearing base (7), is arranged, in a displaceable manner and with longitudinal guidance in the direction of fastening, inside a shaft (10) of the basic body (2).
2. Plug or connector plug according to claim 1, characterized in that the fastening screws (19, 20) of the strain relief clamp (8) can be screwed from the inside of the shell into threaded holes provided in the strain relief clamp (8).
3. Plug or connector plug according to claim 1 or 2, characterized in that the opening of the shaft (10) is situated on the side of the plug pins or plug jacks of the basic body (2).
4. Plug or connector plug according to claim 1 or 2, characterized in that on the side of the strain relief clamp (8), which is opposed to the bearing base (7), a marginal earthing stirrup (12) fastened on the basic body (2) forms a limiting stop protruding into the displacement way of the strain relief clamp (8).
5. Plug or connector plug according to one of the preceding claims, characterized in that
one wall of the basic body is provided on its inside (13) with a mounting member (15) approximately in the shape of a portal, forming the bearing base (7) for the electric line, and in that
the strain relief clamp (8) can be fastened with its thrust member (16) against the inside of the arch of the portal.
6. Plug or connector plug according to claim 5, characterized in that at least one of the two portal columns (17, 18) of the mounting member (15) is traversed in its longitudinal direction by a fastening screw (19, 20) screwed in from the bottom of the portal, for the strain relief clamp (8).
7. Plug or connector plug according to claim 6, characterized in that the heads (21) of the fastening screws (19, 20) are countersunk into the mounting member (15).
8. Plug or connector plug according to one of the preceding claims, characterized in that
the cross section of the strain relief clamp (8) has approximately the shape of a T,
the vertical branch (22) is guided as a thrust member (16), longitudinally displaceable, between the portal columns (17, 18) of the mounting member (15), and
a fastening screw (19 or 20) can be screwed, from the side of the vertical branch, into one of the two parts of the horizontal branch (23), which are situated beside the vertical branch (22).
9. Plug or connector plug according to claim 8, characterized in that two fastening screws (19, 20) can be screwed into the two parts of the horizontal branch (23).
10. Plug or connector plug according to one of the preceding claims, characterized in that the thrust member (16) stressing the electric line, of the strain relief clamp (8), is of hollow design and is open towards the stress side.
11. Plug or connector plug with
an electric line introduced approximately perpendicularly to the longitudinal axes of the plug pins (1),
a shell made of insulating material, consisting of
a basic body (2) serving as support for the plug pins (1) or plug jacks (1'), and
a covering cap (3) covering the line connections (4) on the basic body (2), as well as
with an strain relief device (5) for the electric line, consisting of
a bearing base (7) arranged on the basic body, and
a strain relief clamp (8) that can be fastened against the bearing base (7),
and which traverses the outside wall of the shell and whose rear side (39), opposed to the bearing base (7), is a part of the outer surface of the shell,
characterized in that
the bottom (14) of the basic body is provided on one side situated beside the plane of the plugs which is fixed by the two plug pins (1) or the two plug jacks (1'), with a recess for receiving the strain relief clamp (8), and
the part of a marginal earthing stirrup (12), which is situated on or in the bottom (14) of the basic body, bridges the recess.
12. Plug or connector plug according to claim 11, characterized in that the bottom (14) of the basic body is provided on its inside with at least one partition (24)
running parallel to the plane of the plugs,
protruding into the interior of the shell, and
being situated between the plane of the plugs and the displacement way of the strain relief clamp (8).
13. Plug or connector plug according to claim 12, characterized in that the upper edge of the partition (24) is recessed.
14. Plug or connector plug according to one of the preceding claims, characterized in that a mounting screw (25) can be screwed into the covering cap (3), traversing from outside the part not provided with a recess, of the bottom (14) of the basic body, for screwing the basic body (2) and the covering cap (3) together in axial direction.
15. Plug or connector plug according to claim 14, characterized in that the head of the screw (26) resting on the marginal earthing stirrup (12) is countersunk in a deepening of the outer side of the bottom (14) of the basic body.
16. Plug or connector plug according to one of the preceding claims, characterized in that the portal plane of the mounting member (15) approximately in the shape of a portal is approximately parallel to the plane of the plugs and lies beside that plane.
17. Plug or connector plug according to claim 16, characterized in that the opening for the introduction of the electric line is arranged in the wall area of the covering cap (3), which is situated beside the mounting member (15).
18. Plug or connector plug according to one of the preceding claims, characterized in that the bottom (14) of the basic body is provided on its inside with an inwardly protruding bushing (28) containing the screw-in hole (27) forthe mounting screw (25).
19. Plug according to claim 18, characterized in that beside the bushing (28), between that bushing and the side wall of the covering cap (3), a wall reinforcement (29) is arranged on the rear side of which rests one end (30) of the marginal earthing stirrup, and into which the earthing screw (31) of the electric line can be screwed.
20. Plug according to claim 19, characterized in that the earthing screw (31) can be screwed in, in the direction towards the plug pins (1).
21. Connector plug according to claim 18, characterized in that the earthing screw (31) can be screwed in perpendicularly to the plug-in direction of the plug jacks.
22. Connector plug according to one of the preceding claims, characterized in that onto the bottom (14) of the basic body intermediate walls are formed which protrude into the interior of the shell in the plug-in direction, of which, together with the partitions (24), receptacles of preferably rectangular shape are formed for the plug jacks.
23. Connector plug according to claim 22, characterized in that the intermediate wall opposite to the partition (24) is traversed perpendicularly to the plug-in direction by a connection screw for the plug jack.
24. Connector plug according to claim 22 or 23, characterized in that the connection straps of the plug jacks are designed in the shape of a U and rest against the insides of the intermediate walls forming each receptacle.
25. Connector plug according to claim 24, characterized in that the free ends of the connection straps are bent inwardly towards each other in such a way that the plug jacks are formed by these free ends.
26. Connector plug according to one of the claims 22 to 25, characterized in that the two partitions (24) are guiding surfaces for the strain relief clamp (8).
27. Plug or connector plug according to one of the preceding claims, characterized in that the protruding height of at least the earthing screw (31) over the inside of the bottom (14) of the basic body is substantially smaller than that of the mounting member (15), and in that the substantially plane bottom (32) of the covering cap (3) forms an acute angle (33) with the plane of the plugs, one leg of which is inclined away from the plane of the plugs in the direction towards the side of the earthing screw (31).
28. Plug or connector plug according to one of the preceding claims, characterized in that
they are designed as central plug or central connector socket,
the direction of fastening of the strain relief clamp (8) runs perpendicularly to the plane of the plugs, and
one part of the marginal earthing stirrup (12), which is situated outside the bottom (14) of the basic body, forms the limiting stop protruding into the displacement way of the strain relief clamp.
EP85102371A 1984-03-30 1985-03-02 Plug or receptacle with strain relief device Expired - Lifetime EP0156189B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85102371T ATE56108T1 (en) 1984-03-30 1985-03-02 PLUG OR PLUG COUPLING WITH STRAIN RELIEF.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8409829U 1984-03-30
DE19848409829U DE8409829U1 (en) 1984-03-30 1984-03-30 PLUG OR PLUG COUPLING WITH TENSION RELIEF DEVICE

Publications (3)

Publication Number Publication Date
EP0156189A2 EP0156189A2 (en) 1985-10-02
EP0156189A3 EP0156189A3 (en) 1987-04-29
EP0156189B1 true EP0156189B1 (en) 1990-08-29

Family

ID=6765343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85102371A Expired - Lifetime EP0156189B1 (en) 1984-03-30 1985-03-02 Plug or receptacle with strain relief device

Country Status (5)

Country Link
EP (1) EP0156189B1 (en)
AT (1) ATE56108T1 (en)
DE (2) DE8409829U1 (en)
ES (1) ES295811Y (en)
GR (1) GR850764B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235829A (en) * 1989-08-04 1991-03-13 Data Cable Co Inc Strain relief cable fastener

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1183153B (en) * 1962-06-22 1964-12-10 Busch Jaeger Duerener Metall Earthing contact plug with cross-sectional connector body
US3335395A (en) * 1965-03-19 1967-08-08 Westinghouse Electric Corp Angle plug
DE2048507A1 (en) * 1970-10-02 1972-04-06 Sel Connector housing

Also Published As

Publication number Publication date
ES295811Y (en) 1987-12-16
GR850764B (en) 1985-11-25
DE3579336D1 (en) 1990-10-04
ATE56108T1 (en) 1990-09-15
ES295811U (en) 1987-06-16
EP0156189A2 (en) 1985-10-02
EP0156189A3 (en) 1987-04-29
DE8409829U1 (en) 1984-09-27

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