EP1037310B1 - Sleeve shaped clamping element for strippless connecting electric conductors - Google Patents

Sleeve shaped clamping element for strippless connecting electric conductors Download PDF

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Publication number
EP1037310B1
EP1037310B1 EP20000101409 EP00101409A EP1037310B1 EP 1037310 B1 EP1037310 B1 EP 1037310B1 EP 20000101409 EP20000101409 EP 20000101409 EP 00101409 A EP00101409 A EP 00101409A EP 1037310 B1 EP1037310 B1 EP 1037310B1
Authority
EP
European Patent Office
Prior art keywords
clamping element
clamping
section
cross
sleeve body
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
EP20000101409
Other languages
German (de)
French (fr)
Other versions
EP1037310B3 (en
EP1037310A2 (en
EP1037310A3 (en
Inventor
Bernd Dipl.-Ing. Willinski
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.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of EP1037310A2 publication Critical patent/EP1037310A2/en
Publication of EP1037310A3 publication Critical patent/EP1037310A3/en
Application granted granted Critical
Publication of EP1037310B1 publication Critical patent/EP1037310B1/en
Publication of EP1037310B3 publication Critical patent/EP1037310B3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/2445—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
    • H01R4/2458—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives the contact members being in a slotted tubular configuration, e.g. slotted tube-end

Definitions

  • the invention relates to a sleeve-shaped clamping element in the generic term of claim 1 designated in more detail Art.
  • Such clamping elements are from DE-Auslegeschrift 23 39 800 and from DE Patent 32 39 708 known.
  • the in its entirety formed as a metal clamping spring Sleeve body of such clamping elements has over its entire Cross-section across a constant thickness, which is the case both Contact, namely when cutting into the insulating jacket the director concerned, as well as with regard to the Space requirement of the clamping element in the associated terminal housing is disadvantageous.
  • the invention is therefore based on the object, a sleeve-shaped Clamping element of the generic type to create, its design taking into account the bending stress curve is optimized in the clamping state.
  • the material rejuvenation affects of the clamping leg on the clamping slot itself due to a lower material thickness in the cutting area of the Klemmschenkels, whereby when inserting the not stripped electrical conductor into the clamping slot the cutting of the insulating jacket of the conductor favors becomes.
  • Figure 1 shows a terminal housing 1, in which there is a terminal space 2, which is perpendicular to the plane of representation extends. Therein is one with his Length sleeve body 3 extending in the same direction is arranged, made of a metal with suitable spring properties exists and at least electrically with a power rail 7 is connected.
  • the sleeve body 3 represents a clamping element which along its upper vertex area a clamping slot. 4 having. Through this clamping slot 4 is a through a dash-dotted line indicated plane through, to the the entire sleeve body 3 is mirror-symmetrical is.
  • the sleeve body 3 has seen in cross section a box section or a U-profile, with the U-legs form two opposite clamping legs 5, the integrally connected via the lower U-web 6 with each other are.
  • the U-web 6 is fixed, in particular electrically conductively connected to the busbar 7.
  • the U-bridge 6 goes over rounded arches 8 in the spring legs 5 over, which run up to bends 9, of which from them into converging, sloping roof-shaped extending leg ends 10, which end with end Cutting 11 limit the clamping slot 4.
  • the peculiarity of the sleeve body 3 is that the Clamping leg 5 upwards, so the clamping slot 4 out taper in cross section.
  • the rejuvenation area extends between the rounded arches 8 at the transition to the U-web 6 and the upper bends 9, so that the leg ends 10 of the bends 9 to the clamping slot 4 and to their cutting 11 towards a substantially constant Have cross-section.
  • FIG. 2 shows, when the electrical conductor is inserted 12 of the sleeve body 3 expanded, i. his elastic Clamping legs 5 now have mutually parallel outsides, up to its position at the clamping slot 4 between the cutting 11 a larger spring or clamping path the two clamping legs 5 is available. Also recognizes here, that the thinner in cross-section ends 10th the clamping leg 5 can easily penetrate into the insulating material 13 of the conductor 12.
  • widened position corresponds to Training tapering towards the contact point the clamping leg a carrier of equal bending stress, which means that by the ever-increasing cross-section the spring leg 5 to the clamped U-web. 6 towards the metal material of the sleeve body 3 increasingly has greater bending resistance and accordingly increasing larger restoring forces against the expansion applies.

Description

Die Erfindung bezieht sich auf ein hülsenförmiges Klemmelement der im Gattungsbegriff des Patentanspruchs 1 näher bezeichneten Art.The invention relates to a sleeve-shaped clamping element in the generic term of claim 1 designated in more detail Art.

Solche Klemmelemente sind aus der DE-Auslegeschrift 23 39 800 und aus der DE-Patentschrift 32 39 708 bekannt. Der in seiner Gesamtheit als metallene Klemmfeder ausgebildete Hülsenkörper solcher Klemmelemente hat über seinen gesamten Querschnitt hinweg eine konstante Dicke, was sowohl beim Kontaktieren, nämlich beim Einschneiden in den Isoliermantel des betreffenden Leiters, als auch hinsichtlich des Platzbedarfs des Klemmelementes in dem zugehörigen Klemmengehäuse nachteilig ist. Dabei ist es mit Rücksicht auf den mechanischen Spannungsverlauf bei aufgebrachten Klemmkräften des aufgeweiteten Hülsenkörpers nicht erforderlich, ihn bis zum Klemmschlitz hin in gleicher Dicke auszuführen. Vielmehr ist auf den elastisch verformbaren Bereich abzustellen, in welchem bei klemmendem Hülsenkörper die Spannungen entsprechend der Länge des Hebelarms von der Klemmstelle aus gesehen bei konstanter Materialdicke zunehmen, was keineswegs günstig ist.Such clamping elements are from DE-Auslegeschrift 23 39 800 and from DE Patent 32 39 708 known. The in its entirety formed as a metal clamping spring Sleeve body of such clamping elements has over its entire Cross-section across a constant thickness, which is the case both Contact, namely when cutting into the insulating jacket the director concerned, as well as with regard to the Space requirement of the clamping element in the associated terminal housing is disadvantageous. It is with regard to the mechanical stress curve with applied clamping forces the expanded sleeve body does not require him to perform in the same thickness to the clamping slot. Rather, it is important to focus on the elastically deformable area, in which at clamping sleeve body tensions according to the length of the lever arm from the nip seen from a constant material thickness increase, which is not favorable.

Der Erfindung liegt deshalb die Aufgabe zugrunde, ein hülsenförmiges Klemmelement der gattungsbildenden Art zu schaffen, dessen Gestaltung unter Berücksichtung des Biegespannungsverlaufs im Klemmzustand optimiert ist. The invention is therefore based on the object, a sleeve-shaped Clamping element of the generic type to create, its design taking into account the bending stress curve is optimized in the clamping state.

Diese Aufgabe wird bei einem hülsenförmigen Klemmelement der gattungsgemäßen Art nach der Erfindung durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.This object is achieved with a sleeve-shaped clamping element the generic type of the invention by the characterizing Characteristics of claim 1 solved.

Für die Erfindung ist wesentlich, daß durch die Querschnittsverjüngung zumindest eines der Klemmschenkel des Klemmelementes bis zur Klemmstelle hin zwei unterschiedliche Vorteile erzielt werden. Zum einen wirkt sich die Materialverjüngung des Klemmschenkels am Klemmschlitz selbst durch eine geringere Materialstärke im Schneidenbereich des Klemmschenkels aus, wodurch beim Einschieben des nicht abisolierten elektrischen Leiters in den Klemmschlitz hinein das Durchtrennen des Isoliermantels des Leiters begünstigt wird. Zum zweiten bringt bei der ständigen Miniaturisierung der Bausteine für die Klemmentechnik der im Querschnitt sich verjüngende Klemmschenkel Platzvorteile, weil er sich bei gegebenen Platzverhältnissen vom Klemmschlitz weg weiter aufweiten kann oder bei verringerten Platzverhältnissen Leiter unveränderten Querschnitts kontaktieren kann, ohne daß die Schneid- und Klemmkräfte beeinträchtigt sind. Diese Vorteile wirken sich besonders dann gravierend aus, wenn das erfindungsgemäße hülsenförmige Klemmelement die übliche symmetrische Bauform mit zwei Klemmschenkeln hat, die beide mit verjüngendem Querschnitt ausgeführt sind. Man erreicht so einen gleichmäßigen Verlauf der mechanischen Spannung in den Klemmschenkeln, deren Biegebereich dadurch verlängert werden kann, wodurch höhere Rückstellkräfte möglich sind.For the invention is essential that through the cross-sectional taper at least one of the clamping legs of the Clamping element to the terminal point out two different Benefits are achieved. On the one hand, the material rejuvenation affects of the clamping leg on the clamping slot itself due to a lower material thickness in the cutting area of the Klemmschenkels, whereby when inserting the not stripped electrical conductor into the clamping slot the cutting of the insulating jacket of the conductor favors becomes. Second brings in the constant miniaturization the building blocks for the terminal technology in cross section tapered clamping legs have space advantages because of it at given space from the clamping slot away can widen or in less space Can contact conductors unchanged section, without that the cutting and clamping forces are impaired. These Benefits are especially serious when the sleeve-shaped clamping element according to the invention the usual symmetrical design with two clamping legs, both are designed with tapered cross-section. You reach so a smooth course of the mechanical stress in the clamping legs whose bending area thereby extended can be, whereby higher restoring forces are possible.

Vorteilhafte Ausgestaltungsmerkmale der Erfindung ergeben sich aus den Unteransprüchen. Advantageous design features of the invention result from the dependent claims.

Die Erfindung wird nachfolgend anhand der Zeichnung an einem Ausführungsbeispiel noch näher erläutert. Dabei zeigen:

Fig. 1
den Querschnitt durch eine Klemme mit einem hülsenförmigen Klemmelement entsprechend der Erfindung und
Fig. 2
eine der Figur 1 entsprechende Darstellung, jedoch mit in die Klemme eingeführtem, elektrischem Leiter.
The invention will be explained in more detail with reference to the drawing of an embodiment. Showing:
Fig. 1
the cross section through a clamp with a sleeve-shaped clamping element according to the invention and
Fig. 2
a representation corresponding to Figure 1, but with introduced into the terminal, electrical conductor.

Im einzelnen zeigt Figur 1 ein Klemmengehäuse 1, in welchem sich ein Klemmraum 2 befindet, der sich senkrecht zur Darstellungsebene erstreckt. Darin ist ein sich mit seiner Länge in gleicher Richtung erstreckender Hülsenkörper 3 angeordnet, der aus einem Metall mit geeigneten Federeigenschaften besteht und zumindest elektrisch mit einer Stromschiene 7 verbunden ist.In detail, Figure 1 shows a terminal housing 1, in which there is a terminal space 2, which is perpendicular to the plane of representation extends. Therein is one with his Length sleeve body 3 extending in the same direction is arranged, made of a metal with suitable spring properties exists and at least electrically with a power rail 7 is connected.

Der Hülsenkörper 3 stellt ein Klemmelement dar, welches entlang seinem oberen Scheitelbereich einen Klemmschlitz 4 aufweist. Durch diesen Klemmschlitz 4 geht eine durch eine strichpunktierte Linie angedeutete Ebene hindurch, zu der der gesamte Hülsenkörper 3 spiegelsymmetrisch ausgebildet ist. Insgesamt hat der Hülsenkörper 3 im Querschnitt gesehen ein Kastenprofil oder ein U-Profil, wobei die U-Schenkel zwei einander gegenüberliegende Klemmschenkel 5 bilden, die einstückig über den unteren U-Steg 6 miteinander verbunden sind. Der U-Steg 6 ist fest, insbesondere elektrisch leitend mit der Stromschiene 7 verbunden. Zu beiden Seiten geht der U-Steg 6 über gerundete Bögen 8 in die Federschenkel 5 über, die bis zu Abwinklungen 9 hochlaufen, von denen ab sie in gegeneinander konvergierende, dachschrägenförmig verlaufende Schenkelenden 10 übergehen, welche mit endseitigen Schneiden 11 den Klemmschlitz 4 begrenzen.The sleeve body 3 represents a clamping element which along its upper vertex area a clamping slot. 4 having. Through this clamping slot 4 is a through a dash-dotted line indicated plane through, to the the entire sleeve body 3 is mirror-symmetrical is. Overall, the sleeve body 3 has seen in cross section a box section or a U-profile, with the U-legs form two opposite clamping legs 5, the integrally connected via the lower U-web 6 with each other are. The U-web 6 is fixed, in particular electrically conductively connected to the busbar 7. On both sides the U-bridge 6 goes over rounded arches 8 in the spring legs 5 over, which run up to bends 9, of which from them into converging, sloping roof-shaped extending leg ends 10, which end with end Cutting 11 limit the clamping slot 4.

Die Besonderheit des Hülsenkörpers 3 liegt darin, daß die Klemmschenkel 5 sich nach oben, also zum Klemmschlitz 4 hin im Querschnitt verjüngen. Der Verjüngungsbereich erstreckt sich zwischen den gerundeten Bögen 8 am Übergang zum U-Steg 6 und den oberen Abwinklungen 9, so daß die Schenkelenden 10 von den Abwinklungen 9 bis zum Klemmschlitz 4 bzw. zu ihren Schneiden 11 hin einen im wesentlichen konstanten Querschnitt haben.The peculiarity of the sleeve body 3 is that the Clamping leg 5 upwards, so the clamping slot 4 out taper in cross section. The rejuvenation area extends between the rounded arches 8 at the transition to the U-web 6 and the upper bends 9, so that the leg ends 10 of the bends 9 to the clamping slot 4 and to their cutting 11 towards a substantially constant Have cross-section.

In nicht klemmender, also nicht aufgeweiteter Position verjüngt sich der gesamte Hülsenkörper 3 in seiner Breite nach oben hin etwas, was man in Figur 1 an dem Abstand erkennt, den die Abwinklungen 9 der Klemmschenkel 5 zu den seitlichen Abgrenzungen des Aufnahmeraums 2 lassen. Die erwähnte Verjüngung des Hülsenkörpers 3 betrifft dessen Außenkontur.Tapered in non-clamping, so not expanded position the entire sleeve body 3 in width after towards the top something that can be seen in Figure 1 at the distance, the bends 9 of the clamping legs 5 to the side Delimit the recording room 2. The mentioned Rejuvenation of the sleeve body 3 affects its outer contour.

Wie Figur 2 zeigt, ist bei eingeführtem elektrischen Leiter 12 der Hülsenkörper 3 aufgeweitet, d.h. seine elastischen Klemmschenkel 5 haben jetzt parallel zueinanderliegende Außenseiten, bis zu deren Position hin am Klemmschlitz 4 zwischen den Schneiden 11 ein größerer Feder- oder Klemmweg der beiden Klemmschenkel 5 zur Verfügung steht. Zudem erkennt man hier, daß die im Querschnitt dünneren Enden 10 der Klemmschenkel 5 leichter in das Isolationsmaterial 13 des Leiters 12 eindringen können. As FIG. 2 shows, when the electrical conductor is inserted 12 of the sleeve body 3 expanded, i. his elastic Clamping legs 5 now have mutually parallel outsides, up to its position at the clamping slot 4 between the cutting 11 a larger spring or clamping path the two clamping legs 5 is available. Also recognizes here, that the thinner in cross-section ends 10th the clamping leg 5 can easily penetrate into the insulating material 13 of the conductor 12.

In der kontaktierenden, aufgeweiteten Lage entspricht die sich in Richtung zur Kontaktstelle hin verjüngende Ausbildung der Klemmschenkel einem Träger gleicher Biegespannung, was bedeutet, daß durch den immer größer werdenden Querschnitt der Federschenkel 5 zu dem eingespannten U-Steg 6 hin das Metallmaterial des Hülsenkörpers 3 einen zunehmend größeren Biegewiderstand hat und entsprechend zunehmend größere Rückstellkräfte entgegen der Aufweitung aufbringt.In the contacting, widened position corresponds to Training tapering towards the contact point the clamping leg a carrier of equal bending stress, which means that by the ever-increasing cross-section the spring leg 5 to the clamped U-web. 6 towards the metal material of the sleeve body 3 increasingly has greater bending resistance and accordingly increasing larger restoring forces against the expansion applies.

Claims (7)

  1. Sleeve-shaped clamping element with a clamping slot running in the longitudinal direction of the sleeve body and serving to connect an electric lead without stripping the insulation, wherein the sleeve body seen in cross-section has two opposing spring arms which are in one piece with each other and converge in the region towards the clamping slot with cutting edges defining the clamping slot,
    characterised in that
    at least one of the two spring arms (5) tapers in cross-section in its elastically deformable region towards the clamping slot (4).
  2. Clamping element according to claim 1,
    characterised in that
    the tapered cross-section extends up to the cutting edge (11) of the spring arm (5).
  3. Clamping element according to claim 1 or 2,
    characterised in that
    the reduction in the cross-section of the spring arm (5) is constant.
  4. Clamping element according to one of claims 1 to 3,
    characterised in that
    the two spring arms (5) are mirror symmetrical relative to a plane passing through the clamping slot (4) and both are formed with a narrowing of the cross-section.
  5. Clamping element according to claim 4,
    characterised in that
    the sleeve body (3) is U-shaped in cross-section wherein the U-arms form the spring arms (5) and have ends (10) angled towards each other.
  6. Clamping element according to claim 4,
    characterised in that
    the angled ends (10) of the spring arms (5) are arranged like an inclined roof in relation to the overall cross-section of the sleeve body (3).
  7. Clamping element according to claim 5 or 6,
    characterised in that
    the U-web (6) of the sleeve body (3) has a constant thickness and changes by means of rounded curves (8) into the spring arms (5) which taper from the relevant curve (8) up to the angle (9) at their ends (10).
EP20000101409 1999-03-05 2000-01-25 Sleeve shaped clamping element for strippless connecting electric conductors Expired - Lifetime EP1037310B3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999109825 DE19909825C5 (en) 1999-03-05 1999-03-05 Sleeve-shaped clamping element for stripping-free connection of electrical conductors
DE19909825 1999-03-05

Publications (4)

Publication Number Publication Date
EP1037310A2 EP1037310A2 (en) 2000-09-20
EP1037310A3 EP1037310A3 (en) 2001-08-08
EP1037310B1 true EP1037310B1 (en) 2005-11-16
EP1037310B3 EP1037310B3 (en) 2014-09-17

Family

ID=7899889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000101409 Expired - Lifetime EP1037310B3 (en) 1999-03-05 2000-01-25 Sleeve shaped clamping element for strippless connecting electric conductors

Country Status (2)

Country Link
EP (1) EP1037310B3 (en)
DE (2) DE19909825C5 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20313285U1 (en) * 2003-08-27 2004-09-30 Weco Wester, Ebbinghaus Gmbh & Co. Kg Electrical connection terminal
DE102004047148B4 (en) * 2004-09-29 2006-10-12 Lic Langmatz Gmbh Electrical terminal and cable junction and fuse box with such terminals
DE102007046616B4 (en) 2007-09-27 2011-04-14 Wago Verwaltungsgesellschaft Mbh Insulation displacement connection
CH699105A1 (en) 2008-07-11 2010-01-15 Reichle & De Massari Fa IDC and contacting.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2339800C2 (en) * 1973-08-06 1975-01-09 Siemens Ag, 1000 Berlin Und 8000 Muenchen Sleeve-shaped clamping element for the stripping-free connection of electrical conductors
US3960431A (en) * 1975-07-21 1976-06-01 Nothern Electric Company Limited Electrical connector
FR2503464A1 (en) * 1981-04-03 1982-10-08 Alsthom Cgee JUNCTION BLOCK WITH ELECTRICAL CONNECTION WITHOUT STRIPPING
WO1988002935A1 (en) * 1986-10-10 1988-04-21 Cgee Alsthom Slot connection arrangement for electric wire and corresponding connection tool
FR2722033B1 (en) * 1994-07-04 1996-08-02 Entrelec Sa ELECTRICAL CONNECTION MODULE WITH CONNECTING PART OF THE TYPE WITH A WIRE RETAINING SLOT PROVIDED WITH AN INSULATING MOUTH

Also Published As

Publication number Publication date
DE19909825C2 (en) 2001-05-31
EP1037310B3 (en) 2014-09-17
EP1037310A2 (en) 2000-09-20
EP1037310A3 (en) 2001-08-08
DE50011598D1 (en) 2005-12-22
DE19909825C5 (en) 2006-01-26
DE19909825A1 (en) 2000-09-21

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