EP0721679B1 - Compression-type sleeve - Google Patents

Compression-type sleeve Download PDF

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Publication number
EP0721679B1
EP0721679B1 EP95930421A EP95930421A EP0721679B1 EP 0721679 B1 EP0721679 B1 EP 0721679B1 EP 95930421 A EP95930421 A EP 95930421A EP 95930421 A EP95930421 A EP 95930421A EP 0721679 B1 EP0721679 B1 EP 0721679B1
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EP
European Patent Office
Prior art keywords
compression
groove
compression sleeve
recesses
sleeve
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
EP95930421A
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German (de)
French (fr)
Other versions
EP0721679A1 (en
Inventor
Dieter Sander
Manfred Pfleiderer
Roger Munzlinger
Hans-Joachim Keller
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.)
Pfisterer Kontaktsysteme GmbH
Original Assignee
Pfisterer Kontaktsysteme GmbH
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Publication date
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Publication of EP0721679A1 publication Critical patent/EP0721679A1/en
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Publication of EP0721679B1 publication Critical patent/EP0721679B1/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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • H01R4/203—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve having an uneven wire-receiving surface to improve the contact

Definitions

  • the invention relates to a press sleeve for producing a press connection with one strand, in particular an electrical conductor.
  • a compression cable lug which has a compression sleeve has which is provided on its inner surface with a thread.
  • the thread is produced by forming a helical, groove-like Depression formed without cutting.
  • the thread is said to be a good mechanical and electrical Connection between the press sleeve and the strand to be picked up guarantee.
  • this press sleeve as well the known compression sleeves with a smooth inner surface are not always closed leads completely satisfactory press connections.
  • the invention is therefore based on the object, a compression sleeve of the beginning to improve the type mentioned. This object is achieved by a Press sleeve with the features of claim 1.
  • the groove-like depressions in the longitudinal direction of the sleeve define weak points in the sleeve wall. At these defined weak points, the sleeve wall deforms in such a way that longitudinal cuts are formed. Furthermore, due to the weak points, the restoring force of the press sleeve opposing the pressing is reduced. As a result, a lower pressing force is sufficient to achieve a press connection of the same quality. In addition, the better compressibility enables a shorter length of the compression sleeve and thus possibly a smaller, in particular shorter sleeve with a correspondingly lower need for cast resin. A shorter press sleeve also requires fewer press points.
  • the number of pressing points in the circumferential direction (usually six) deviates from the number of groove-like depressions (for example eight).
  • the press sleeve according to the invention it is also possible to firmly and electrically connect a single-wire to a multi-wire conductor, even if the two conductors each have the same cross-sectional area but different outer diameters and the inner diameter of the press sleeve is constant over its entire length.
  • the groove-like depressions as continuous longitudinal grooves are formed and evenly in the circumferential direction are distributed.
  • the latter is also for the quality of the connection advantageous.
  • Very advantageous are groove-like depressions, the flanks of each one Form edge with the inner surface, especially groove-like Depressions that are rectangular or trapezoidal Have cross-sectional profile.
  • the compression sleeve has cut on their inner lateral surface, which is aligned with a Component extend in the circumferential direction and advantageously Parts of one interrupted by the groove-like depressions Threads.
  • the embodiment is in one piece trained, approximately hollow cylindrical press connector, the two identical press sleeves 1 according to the invention axially next to one another having.
  • Each press sleeve 1 has cutting edges 3 on its inner lateral surface on which run essentially in the circumferential direction and in the manufacture of the compression sleeve 1 as parts of a thread 2 were formed, preferably by non-cutting shaping.
  • By the inward-facing edges of the cutting edges 3 is the inside diameter the compression sleeve 1 defined.
  • this edge of the cutting 3 to the outer surface of the press sleeve 1 out the wall thickness of the compression sleeve 1 is defined.
  • the compression sleeve 1 also has on the inner jacket side their entire length of axially extending, groove-like depressions 5 on, the flanks of which each have a longitudinal edge with the inner shell side 5 'form.
  • six are the same groove-like Wells 5 evenly in the circumferential direction of the compression sleeve 1 distributed. Through the groove-like depressions 5 in these areas, the wall thickness of the compression sleeve 1 is reduced.
  • the groove-like depressions 5 are as Longitudinal grooves formed with a rectangular cross section; however, a trapezoidal or round cross section could also be used Find application. The production of the groove-like depressions 5 can be made without cutting or cutting.
  • the compression sleeve 1 carries several on its outer surface Markings 7 for attaching the press tool, through which ring zones experiencing compression are defined.
  • the groove-like depressions 5 are exemplary embodiments consistently over the entire length of the compression sleeve 1 with the provided the same cross section, but it would for the invention Formation of longitudinal cuts is sufficient if the groove-like depressions 5 essentially in the area of the markings 7 defined ring zones would be formed.
  • the two compression sleeves 1 designed so that they have a common Outer surface, the same inner diameter that Cut 3 as parts of the same thread and over both Press sleeves 1, the continuous groove-like depressions 5 have.
  • the Press connector In the middle area of the press connector, in which the two press sleeves 1 merge into, the Press connector one from the inner surface to the outer surface reaching hole 9.
  • the compression sleeves 1 are on the end faces the compression sleeves 1 chamfered to the inner surface to the To facilitate insertion of a conductor strand.
  • a Press connector with two press sleeves according to the invention also two Have blind holes so that the compression sleeves through a central wall are separated.
  • the inside diameter of the Blind holes or parts of the hollow cylinder different be, the press connector so be a reducing connector.
  • press sleeve according to the invention could also be part of a Press cable lug.
  • ferrule is not on electrical conductors limited. It can also be used to manufacture a mechanical Connection with any strands can be used.
  • Press sleeve 1 To produce a press connection by means of an inventive Press sleeve 1 is usually first the to be pressed, Insulation-free conductor in the greased with press grease Press sleeve 1 introduced. Then get on through the markings 7 marked positions one after the other a press tool, for example, a pressing tongs, attached and in the press the corresponding sleeve zone with a force, the to a predetermined pressing force between the Press sleeve 1 and the conductor inserted into it.
  • a press tool for example, a pressing tongs
  • the sleeve wall deforms these weak points in the respective ring zone such that the longitudinal edges 5 'of the recesses 5 to themselves in the longitudinal direction of the sleeve extending longitudinal cutting.
  • the groove-like depressions 5 also have after pressing an albeit reduced free cross section. Meals how in the exemplary embodiment, such a recess 5 in at least one of the end faces of the compression sleeve 1 or at the hole 9, so They thus become a pressure relief channel for the press grease. If the press grease heats up, it can then flow through these pressure relief channels expand. This can prevent a pressure builds up in the press sleeve, which leads to an expansion the press sleeve could lead.

Abstract

In a compression-type sleeve (1) for creating a crimped joint with a strand, in particular an electrical conductor, the inner sleeve surface is provided, at least in the ring-zones subject to pressure, with groove-like cavities (5) which extend along the length of the sleeve. The groove-like cavities (5) are of a depth which reduces the thickness of the compression-type sleeve to the extent that longitudinal edges are formed along the cavities (5) when the crimping pressure is applied, and/or are shaped in at least one of the faces of the compression-type sleeve (1) in the form of pressure-relief channels for compressed grease.

Description

Die Erfindung betrifft eine Preßhülse zur Herstellung einer Preßverbindung mit einem Strang, insbesondere einem elektrischen Leiter.The invention relates to a press sleeve for producing a press connection with one strand, in particular an electrical conductor.

Aus der DE 70 45 534 U1 ist ein Preßkabelschuh bekannt, der eine Preßhülse aufweist, welche auf ihrer Innenmantelfläche mit eine Gewinde versehen ist. Bei der Herstellung wird das Gewinde durch Ausbildung einer wendelförmigen, nutartigen Vertiefung spanlos geformt. Das Gewinde soll eine gute mechanische und elektrische Verbindung zwischen der Preßhülse und dem aufzunehmenden Strang gewährleisten. In der Praxis zeigt sich aber, daß diese Preßhülse ebenso wie die bekannten Preßhülsen mit einer glatten Innenmantelfläche nicht immer zu vollständig zufriedenstellenden Preßverbindungen führt.From DE 70 45 534 U1 a compression cable lug is known which has a compression sleeve has which is provided on its inner surface with a thread. In the The thread is produced by forming a helical, groove-like Depression formed without cutting. The thread is said to be a good mechanical and electrical Connection between the press sleeve and the strand to be picked up guarantee. In practice it turns out that this press sleeve as well the known compression sleeves with a smooth inner surface are not always closed leads completely satisfactory press connections.

Aus der US-A-2,375,741 ist eine Preßhülse zur Herstellung einer Preßverbindung mit einem Strang, insbesondere einem elektrischen Leiter, bekannt, die in ihrer Innenmantelfläche im Schnitt quer zur Hülsenlängsrichtung aneinander angrenzende V-förmige Nuten aufweist, deren Scheitellinien bereits im unverpreßten Zustand Längsschneiden entlang der nutartigen Vertiefungen bilden.From US-A-2,375,741 is a press sleeve for producing a press connection with a strand, in particular an electrical conductor, known in its Inner circumferential surface adjacent to each other in cross section to the longitudinal direction of the sleeve V-shaped grooves, the apex lines already in the uncompressed state Make longitudinal cuts along the groove-like depressions.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Preßhülse der eingangs genannten Art zu verbessern. Diese Aufgabe wird erfindungsgemäß gelöst durch eine Preßhülse mit den Merkmalen des Anspruches 1.The invention is therefore based on the object, a compression sleeve of the beginning to improve the type mentioned. This object is achieved by a Press sleeve with the features of claim 1.

Durch die nutartigen Vertiefungen in Hülsenlängsrichtung sind Schwachstellen in der Hülsenwand definiert. An diesen definierten Schwachstellen verformt sich beim Verpressen die Hülsenwand derart, daß Längsschneiden gebildet werden. Ferner ist durch die Schwachstellen die der Verpressung entgegenstehende Rückstellkraft der Preßhülse reduziert. Dadurch ist zur Erzielung einer Preßverbindung gleicher Qualität eine geringere Preßkraft ausreichend. Außerdem ermöglicht die bessere Verpreßbarkeit eine geringere Länge der Preßhülse und damit gegebenenfalls eine kleinere, insbesondere kürzere Muffe mit entsprechend geringerem Gießharzbedarf. Eine kürzere Preßhülse erfordert ferner weniger Preßstellen. Statt der bisher üblichen, unterschiedlich harten Preßhülsen für eindrähtige und mehrdrähtige Leiter ist nur noch eine einzige Preßhülse für beide Leiterarten notwendig, da die besser verpreßbare Preßhülse dank der definierten Schwachstellen sich an die unterschiedliche Härte der zu verpressenden Leiter anpaßt. Die beim Verpressen entstehenden Schneiden führen aufgrund einer höheren Verdichtung zu einer besseren Kontaktierung zwischen der Preßhülse und dem Leiter und bei mehrdrähtigen Leitern zu einer besseren Querleitfähigkeit zwischen den Drähten. Die Tiefe und die Anzahl der nutartigen Vertiefungen ist vorteilhafterweise auf den Durchmesser des zu verpressenden Leiters abgestimmt.
Ganz besonders vorteilhaft ist es, wenn die Zahl der Preßstellen in Umfangsrichtung (üblicherweise sechs) von der Zahl der nutartigen Vertiefungen abweicht (z.B. acht).
Mit der erfindungsgemäßen Preßhülse ist es auch möglich, einen eindrähtigen mit einem mehrdrähtigen Leiter elektrisch und mechanisch fest zu verbinden, auch wenn die beiden Leiter jeweils die gleiche Querschnittsfläche aber unterschiedliche Außendurchmesser aufweisen und der Innendurchmesser der Preßhülse über ihre gesamte Länge konstant ist.The groove-like depressions in the longitudinal direction of the sleeve define weak points in the sleeve wall. At these defined weak points, the sleeve wall deforms in such a way that longitudinal cuts are formed. Furthermore, due to the weak points, the restoring force of the press sleeve opposing the pressing is reduced. As a result, a lower pressing force is sufficient to achieve a press connection of the same quality. In addition, the better compressibility enables a shorter length of the compression sleeve and thus possibly a smaller, in particular shorter sleeve with a correspondingly lower need for cast resin. A shorter press sleeve also requires fewer press points. Instead of the hitherto common, differently hard compression sleeves for single-wire and multi-wire conductors, only a single compression sleeve is required for both types of conductors, since the better compressible compression sleeve, thanks to the defined weak points, adapts to the different hardness of the conductors to be pressed. The cutting edges produced during the pressing process lead to better contact between the compression sleeve and the conductor and, in the case of multi-wire conductors, to better transverse conductivity between the wires due to a higher compression. The depth and the number of groove-like depressions is advantageously matched to the diameter of the conductor to be pressed.
It is particularly advantageous if the number of pressing points in the circumferential direction (usually six) deviates from the number of groove-like depressions (for example eight).
With the press sleeve according to the invention, it is also possible to firmly and electrically connect a single-wire to a multi-wire conductor, even if the two conductors each have the same cross-sectional area but different outer diameters and the inner diameter of the press sleeve is constant over its entire length.

Soweit die nutartigen Vertiefungen nach dem Verpressen wenigstens noch teilweise vorhanden sind und in wenigstens einer der beiden Stirnflächen münden, bilden diese nutartigen Vertiefungen Druckentlastungskanäle für das beim Verpressen üblicherweise verwendete Preßfett. Eine Erwärmung und Ausdehnung des Preßfettes führt dann nicht wie bisher zu einer Verschlechterung des elektrischen Kontaktes zwischen der Preßhülse und dem Leiter und dem Aufbau von mechanischen Spannungen. As far as the groove-like depressions at least after pressing are still partially present and in at least one of the two end faces form these groove-like depressions Pressure relief channels for that when pressing Press grease commonly used. A warming and expansion of the grease then does not lead to one as before Deterioration of the electrical contact between the Press sleeve and the conductor and the construction of mechanical Tensions.

Für eine einfache Herstellung der erfindungsgemäßen Preßhülsen ist es von Vorteil, wenn die nutartigen Vertiefungen als durchgängige Längsnuten ausgebildet und gleichmäßig in Umfangsrichtung verteilt angeordnet sind. Letzteres ist auch für die Qualität der Verbindung vorteilhaft. Ganz besonders vorteilhaft sind nutartige Vertiefungen, deren Flanken je eine Kante mit der Innenmantelfläche bilden, insbesondere nutartige Vertiefungen, die ein rechteckförmiges oder trapezförmiges Querschnittsprofil haben.For simple manufacture of the compression sleeves according to the invention it is advantageous if the groove-like depressions as continuous longitudinal grooves are formed and evenly in the circumferential direction are distributed. The latter is also for the quality of the connection advantageous. Very advantageous are groove-like depressions, the flanks of each one Form edge with the inner surface, especially groove-like Depressions that are rectangular or trapezoidal Have cross-sectional profile.

Die Preßhülse weist auf ihrer Innenmantelfläche Schneiden auf, die sich mit einer Komponente in Umfangsrichtung erstrecken und vorteilhafterweise Teile eines durch die nutartigen Vertiefungen unterbrochenen Gewindes sind. Durch die Zerstörung einer etwaigen Oxidhaut des Leiters durch die Schneiden verbessert sich der elektrische Kontakt zwischen der Preßhülse und dem Leiter.The compression sleeve has cut on their inner lateral surface, which is aligned with a Component extend in the circumferential direction and advantageously Parts of one interrupted by the groove-like depressions Threads. By destroying any The oxide skin of the conductor is improved by the cutting electrical contact between the ferrule and the conductor.

Im folgenden ist die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen

Fig. 1
eine Seitenansicht auf das Ausführungsbeispiel,
Fig. 2
eine Stirnansicht des Ausführungsbeispiels,
Fig. 3
einen Längsschnitt durch das Ausführungsbeispiel.
The invention is explained in more detail below on the basis of an exemplary embodiment shown in the drawing. Show it
Fig. 1
a side view of the embodiment,
Fig. 2
a front view of the embodiment,
Fig. 3
a longitudinal section through the embodiment.

Beim Ausführungsbeispiel handelt es sich um einen einstückig ausgebildeten, näherungsweise hohlzylindrischen Preßverbinder, der zwei gleiche, erfindungsgemäße Preßhülsen 1 axial nebeneinander aufweist. The embodiment is in one piece trained, approximately hollow cylindrical press connector, the two identical press sleeves 1 according to the invention axially next to one another having.

Jede Preßhülse 1 weist auf ihrer Innenmantelfläche Schneiden 3 auf, welche im wesentlichen in Umfangsrichtung verlaufen und bei der Herstellung der Preßhülse 1 als Teile eines Gewindes 2 ausgebildet wurden, vorzugsweise durch spanloses Formen. Durch die nach innen zeigenden Kanten der Schneiden 3 ist der Innendurchmesser der Preßhülse 1 definiert. Durch den Abstand dieser Kanten der Schneiden 3 zur Außenmantelfläche der Preßhülse 1 hin ist die Wandstärke der Preßhülse 1 definiert.Each press sleeve 1 has cutting edges 3 on its inner lateral surface on which run essentially in the circumferential direction and in the manufacture of the compression sleeve 1 as parts of a thread 2 were formed, preferably by non-cutting shaping. By the inward-facing edges of the cutting edges 3 is the inside diameter the compression sleeve 1 defined. By the distance this edge of the cutting 3 to the outer surface of the press sleeve 1 out the wall thickness of the compression sleeve 1 is defined.

Ebenfalls auf der Innenmantelseite weist die Preßhülse 1 über ihre gesamte Länge axial verlaufende, nutartige Vertiefungen 5 auf, deren Flanken mit der Innenmantelseite je eine Längskante 5' bilden. Im Ausführungsbeispiel sind sechs gleiche nutartige Vertiefungen 5 gleichmäßig in Umfangsrichtung der Preßhülse 1 verteilt angeordnet. Durch die nutartigen Vertiefungen 5 ist in diesen Bereichen die Wandstärke der Preßhülse 1 reduziert. Im Ausführungsbeispiel sind die nutartigen Vertiefungen 5 als Längsnuten mit einem rechteckförmigen Querschnitt ausgebildet; jedoch könnte auch ein trapezförmiger oder runder Querschnitt Anwendung finden. Die Herstellung der nutartigen Vertiefungen 5 kann spanlos oder spanabhebend erfolgen.The compression sleeve 1 also has on the inner jacket side their entire length of axially extending, groove-like depressions 5 on, the flanks of which each have a longitudinal edge with the inner shell side 5 'form. In the exemplary embodiment, six are the same groove-like Wells 5 evenly in the circumferential direction of the compression sleeve 1 distributed. Through the groove-like depressions 5 in these areas, the wall thickness of the compression sleeve 1 is reduced. In the exemplary embodiment, the groove-like depressions 5 are as Longitudinal grooves formed with a rectangular cross section; however, a trapezoidal or round cross section could also be used Find application. The production of the groove-like depressions 5 can be made without cutting or cutting.

Auf ihrer Außenmantelfläche trägt die Preßhülse 1 mehrere Markierungen 7 zum Ansetzen des Preßwerkzeuges, durch welche die eine Verpressung erfahrenden Ringzonen definiert sind. Im Ausführungsbeispiel sind die nutartigen Vertiefungen 5 zwar durchgängig über die gesamte Länge der Preßhülse 1 mit dem gleichen Querschnitt versehen, jedoch würde es für die erfindungsgemäße Bildung von Längsschneiden genügen, wenn die nutartigen Vertiefungen 5 im wesentlichen im Bereich der durch die Markierungen 7 definierten Ringzonen ausgebildet wären.The compression sleeve 1 carries several on its outer surface Markings 7 for attaching the press tool, through which ring zones experiencing compression are defined. in the The groove-like depressions 5 are exemplary embodiments consistently over the entire length of the compression sleeve 1 with the provided the same cross section, but it would for the invention Formation of longitudinal cuts is sufficient if the groove-like depressions 5 essentially in the area of the markings 7 defined ring zones would be formed.

Bei dem als Ausführungsbeispiel gewählten Preßverbinder sind die beiden Preßhülsen 1 so ausgebildet, daß sie eine gemeinsame Außenmantelfläche, den gleichen Innendurchmesser, die Schneiden 3 als Teile des gleichen Gewindes und über beide Preßhülsen 1 die durchgängig verlaufenden nutartigen Vertiefungen 5 aufweisen. Im Mittelbereich des Preßverbinders, in dem die beiden Preßhülsen 1 ineinander übergehen, weist der Preßverbinder ein von der Innenmantelfläche bis zur Außenmantelfläche reichendes Loch 9 auf. An den Stirnflächen sind die Preßhülsen 1 zur Innenmantelfläche hin angefast, um das Einführen eines Leiterstranges zu erleichtern.In the press connector chosen as an embodiment the two compression sleeves 1 designed so that they have a common Outer surface, the same inner diameter that Cut 3 as parts of the same thread and over both Press sleeves 1, the continuous groove-like depressions 5 have. In the middle area of the press connector, in which the two press sleeves 1 merge into, the Press connector one from the inner surface to the outer surface reaching hole 9. Are on the end faces the compression sleeves 1 chamfered to the inner surface to the To facilitate insertion of a conductor strand.

Statt einer durchgängig hohlzylindrischen Form könnte ein Preßverbinder mit zwei erfindungsgemäßen Preßhülsen auch zwei Sacklöcher aufweisen, so daß die Preßhülsen durch eine Mittelwand getrennt sind. Ebenso könnte der Innendurchmesser der Sacklöcher oder der Teile des Hohlzylinders unterschiedlich sein, der Preßverbinder also ein Reduzierverbinder sein.Instead of a continuous hollow cylindrical shape, a Press connector with two press sleeves according to the invention also two Have blind holes so that the compression sleeves through a central wall are separated. Likewise, the inside diameter of the Blind holes or parts of the hollow cylinder different be, the press connector so be a reducing connector.

Ferner könnte die erfindungsgemäße Preßhülse auch Teil eines Preßkabelschuhs sein.Furthermore, the press sleeve according to the invention could also be part of a Press cable lug.

Die Verwendung der Preßhülse ist nicht auf elektrische Leiter beschränkt. Sie kann auch zur Herstellung einer mechanischen Verbindung mit beliebigen Strängen benutzt werden.The use of the ferrule is not on electrical conductors limited. It can also be used to manufacture a mechanical Connection with any strands can be used.

Zur Herstellung einer Preßverbindung mittels einer erfindungsgemäßen Preßhülse 1 wird üblicherweise zunächst der zu verpressende, isolationslose Leiter in die mit Preßfett eingefettete Preßhülse 1 eingeführt. Dann wird an die durch die Markierungen 7 gekennzeichneten Stellen nacheinander ein Preßwerkzeug, beispielsweise eine Preßzange, angesetzt und in der entsprechenden Ringzone die Preßhülse mit einer Kraft verpreßt, die zu einer vorbestimmten Preßkraft zwischen der Preßhülse 1 und dem in sie eingeführten Leiter führt.To produce a press connection by means of an inventive Press sleeve 1 is usually first the to be pressed, Insulation-free conductor in the greased with press grease Press sleeve 1 introduced. Then get on through the markings 7 marked positions one after the other a press tool, for example, a pressing tongs, attached and in the press the corresponding sleeve zone with a force, the to a predetermined pressing force between the Press sleeve 1 and the conductor inserted into it.

Da durch die nutartigen Vertiefungen 5 Schwachstellen in der Hülsenwand definiert sind, verformt sich die Hülsenwand an diesen Schwachstellen in der jeweiligen Ringzone derart, daß die Längskanten 5' der Vertiefungen 5 zu sich in Hülsenlängsrichtung erstreckenden Längsschneiden werden. Because of the groove-like depressions 5 weak points in the Sleeve wall are defined, the sleeve wall deforms these weak points in the respective ring zone such that the longitudinal edges 5 'of the recesses 5 to themselves in the longitudinal direction of the sleeve extending longitudinal cutting.

Besondersgünstige elektrische und mechanische Eigenschaften der Preßverbindung ergeben sich, wenn die Materialpartien zwischen den nutartigen Vertiefungen 5 beim Verpressen leicht schräg nach innen gedrückt werden, also mit den Längskanten 5' voraus.Particularly favorable electrical and mechanical properties of the press connection arise when the material parts between the groove-like depressions 5 be pressed slightly obliquely when pressing, i.e. with the longitudinal edges 5 'ahead.

Die nutartigen Vertiefungen 5 haben auch nach der Verpressung einen wenn auch verringerten freien Querschnitt. Mündet, wie im Ausführungsbeispiel, eine solche Vertiefung 5 in wenigstens einer der Stirnflächen der Preßhülse 1 oder am Loch 9, so wird sie damit zu einem Druckentlastungskanal für das Preßfett. Erwärmt sich das Preßfett, kann es sich dann über diese Druckentlastungskanäle ausdehnen. Damit Läßt sich verhindern, daß sich in der Preßhülse ein Druck aufbaut, der zu einer Aufweitung der Preßhülse führen könnte.The groove-like depressions 5 also have after pressing an albeit reduced free cross section. Meals how in the exemplary embodiment, such a recess 5 in at least one of the end faces of the compression sleeve 1 or at the hole 9, so They thus become a pressure relief channel for the press grease. If the press grease heats up, it can then flow through these pressure relief channels expand. This can prevent a pressure builds up in the press sleeve, which leads to an expansion the press sleeve could lead.

Claims (11)

  1. Compression sleeve (1) for producing a compression-type connection with an elongate body, especially an electrical conductor, which compression sleeve (1) is provided on its inner surface, at least in the annular zones provided for compression, with groove-like recesses (5) which extend in the longitudinal direction of the sleeve, wherein the recesses (5) have a depth which reduces the wall thickness of the compression sleeve (1) to a value which, on compression, leads to the formation of longitudinal edges (5') along the groove-like recess (5), and wherein the inner surface is additionally provided with edges (3) whose direction of extension has at least a component in the circunferential direction of the compression sleeve (1).
  2. Compression sleeve according to claim 1, characterised in that the edges (3) are parts of a thread interrupted by the groove-like recesses (5).
  3. Compression sleeve according in claim 1 or 2, characterised in that at least some of the groove-like recesses (5) are in the form of pressure-relief channels for compression grease which open into at least one of the two end faces of the compression sleeve (1).
  4. Compression sleeve according to any one of claims 1 to 3, characterised in that the groove-like recesses (5) are in the form of continuous longitudinal grooves.
  5. Compression sleeve according to any one of claims I to 4, characterised in that the groove-like recesses (S) are distributed uniformly in the circumferential direction.
  6. Compression sleeve according to any one of claims I to 5, characterised in that the groove-like recesses (5) have flanks which each form an edge with the inner surface.
  7. Compression sleeve according to claim 6, characterised in that the groove-like recesses (5) have a rectangular or trapezoidal cross-sectional profile.
  8. Compression sleeve according to any one of claims 1 to 7 having a compression tool that specifies the number of compression points in the circumferential direction, characterised in that the number of groove-like recesses (5) is different from the number of compression points in the cirumferential direction.
  9. Compression sleeve according to any one of claims 1 to 8, characterised in that the compression sleeve (1) is part of a compression connector.
  10. Compression sleeve according to any one of claims 1 to 8, characterised in that the compression sleeve (1) is part of a compression-type socket.
  11. Method of producing a compression-type connection by means of a compression sleeve according to any one of claims 1 to 8, characterised in that compression of the compression sleeve (1) in the unnular zones undergoing compression takes place with a force that leads to the formation of edges along the groove-like recesses (5).
EP95930421A 1994-07-28 1995-07-28 Compression-type sleeve Expired - Lifetime EP0721679B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4426790A DE4426790A1 (en) 1994-07-28 1994-07-28 Compression sleeve
DE4426790 1994-07-28
PCT/EP1995/003008 WO1996003784A1 (en) 1994-07-28 1995-07-28 Compression-type sleeve

Publications (2)

Publication Number Publication Date
EP0721679A1 EP0721679A1 (en) 1996-07-17
EP0721679B1 true EP0721679B1 (en) 1999-12-22

Family

ID=6524381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95930421A Expired - Lifetime EP0721679B1 (en) 1994-07-28 1995-07-28 Compression-type sleeve

Country Status (5)

Country Link
EP (1) EP0721679B1 (en)
AT (1) ATE188069T1 (en)
DE (1) DE4426790A1 (en)
HU (1) HUT75412A (en)
WO (1) WO1996003784A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10357048A1 (en) * 2003-12-04 2005-07-21 Leoni Bordnetz-Systeme Gmbh & Co Kg Method for producing an electrical connection between an aluminum conductor and a contact element
FR2896093B1 (en) * 2006-01-10 2009-07-10 Diamecans Soc Par Actions Simp ELECTRIC CUTTING CIRCUIT TERMINAL, ASSEMBLY COMPRISING AN ELECTRIC CIRCUIT BREAKER TERMINAL AND AN ELECTRIC POWER CABLE, AND CURRENT CUTTING DEVICE FROM AN BATTERY BATTERY
US8246393B2 (en) * 2007-03-12 2012-08-21 Hubbell Incorporated Implosion connector and method for use with transmission line conductors comprising composite cores

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH208425A (en) * 1938-03-16 1940-01-31 Bagnagatti Achille Electrical and mechanical junction device for conductors.
US2375741A (en) * 1942-01-17 1945-05-08 Dibner Bern Method of connecting a sleeve to a wire
US2735997A (en) * 1953-11-09 1956-02-21 Electmcal connector
GB938242A (en) * 1961-02-02 1963-10-02 Burndy Corp Fluted connector
GB1347234A (en) * 1970-12-22 1974-02-27 Ross Courtney Co Ltd Solderless joints for electrical conductors
FR2509919A1 (en) * 1981-07-15 1983-01-21 Dervaux Ets ANCHORING OR JUNCTION SLEEVE
US4469390A (en) * 1982-06-09 1984-09-04 Kings Electronics Co., Inc. Crimped connector
FR2553594B1 (en) * 1983-10-14 1986-02-21 Auxiliaire Appar Electric CONNECTOR FOR INSULATED ELECTRICAL CABLES

Also Published As

Publication number Publication date
EP0721679A1 (en) 1996-07-17
ATE188069T1 (en) 2000-01-15
HU9600768D0 (en) 1996-05-28
HUT75412A (en) 1997-05-28
WO1996003784A1 (en) 1996-02-08
DE4426790A1 (en) 1996-02-08

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