EP0051153A1 - Clamping element for the connexion without stripping of electrical conductors - Google Patents

Clamping element for the connexion without stripping of electrical conductors Download PDF

Info

Publication number
EP0051153A1
EP0051153A1 EP81107869A EP81107869A EP0051153A1 EP 0051153 A1 EP0051153 A1 EP 0051153A1 EP 81107869 A EP81107869 A EP 81107869A EP 81107869 A EP81107869 A EP 81107869A EP 0051153 A1 EP0051153 A1 EP 0051153A1
Authority
EP
European Patent Office
Prior art keywords
clamping element
recess
conductor
region
zones
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.)
Withdrawn
Application number
EP81107869A
Other languages
German (de)
French (fr)
Inventor
Günter Thom
Hans Scholtholt
Ewald Steiner
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0051153A1 publication Critical patent/EP0051153A1/en
Withdrawn legal-status Critical Current

Links

Images

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
    • H01R4/2462—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 bent configuration, e.g. slotted bight

Definitions

  • the present invention relates to a clamping element consisting of a flat strip for stripping-free connection of insulated electrical conductors.
  • Such clamping elements are known in numerous embodiments and mainly consist of a spring plate with a punched-out slot into which the insulated conductor is pressed by means of a tool. Since the clear width of the slot is slightly smaller than the conductor core diameter, the insulation of the conductor is penetrated on opposite sides and an intimate contact is made between the conductor and the clamping element.
  • the object of the present invention is to provide a clamping element which can be produced simply and cheaply and which can also be used as a single element or in a housing for several people.
  • the clamping element has in its one end region a recess located within the strip, the central region of which is circular, with wedge-shaped zones extending on both sides of this region and that the clamping element is bent so that the circular area is located at the apex of this turn.
  • this clamping element can be created inexpensively by means of a simple stamping and bending process.
  • the design of the recess has the further advantage that a conductor can easily be inserted through the circular area into the actual clamping area when it is clamped.
  • the tapered zones are designed so that their ends have a smaller internal width than the core diameter of the conductor to be clamped. Because of the wedge-shaped design of the zones mentioned, conductors of different thicknesses can be contacted with the clamping element, and the clamped conductor is contacted with the element at four points, so that reliable contacting is always guaranteed.
  • the free end of the clamping element adjacent to this recess can have a recess whose inside width is equal to or slightly less than the outer diameter of the insulated conductor. If this end containing the recess is bent toward the end region having the recess in such a way that the recess and the wedge-shaped zones lie approximately in one line of alignment, then, as already mentioned, the insulation of the conductor is severed in the region of the zones mentioned, the recess at the free end engages around the insulation of the conductor and forms a strain relief for the actual contact points. With this recess, too, the insertion of the conductor can be facilitated in that the free end regions of this recess are provided with bevels.
  • the conductor can be pressed in with a pressure piece which bears against the conductor at several points.
  • the clamping element 1 shown in the figures and consisting of a flat strip of resilient material has in an end region 2 a recess 3 located within the strip, the central region 4 of which is circular. On both sides of this area 4 there are wedge-shaped zones 5 and 6, the closed ends 7 of which each have a clear width which is smaller than the outer diameter of a conductor core 8 (FIG. 3).
  • the one free end 9, on the other hand, has a recess 10, the clear width of which is smaller or equal to the outer diameter of an insulated conductor 11 (FIG. 3).
  • the clamping element 1 is bent in such a way that, seen from the free end 9, first a rectangular base region 12 and an adjoining arcuate region 13 is formed, which then merges into the other free end 14.
  • This other free end can e.g. serve as a plug contact or for connecting additional conductors using known connection techniques.

Landscapes

  • Suspension Of Electric Lines Or Cables (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

Strip-shaped terminal elements (1) for the connection without stripping of electrical conductors. Such a terminal element (1) should be designed such that it can be produced cost-effectively. For this purpose, within the strip (2) there is a cut-out (3), the centre region (4) of which is of circular design, zones (5, 6) extending in a wedge-shape being connected on both sides of this region (4) in the longitudinal direction of the strip (2). In this arrangement, the terminal element (1) is bent such that the circular-shaped region (4) is located at the apex of the bend. By these means, the conductor to be connected can be inserted easily and quickly and is made contact with securely in the zones (5, 6) extending in a wedge-shape in each case on opposite sides (Fig. 1). <IMAGE>

Description

Die vorliegende Erfindung Detrifft ein aus einem flachen Streifen bestehendes Klemmelement zum abisolierfreien Anschluß isolierter elektrischer Leiter.The present invention relates to a clamping element consisting of a flat strip for stripping-free connection of insulated electrical conductors.

Derartige Klemmelemente sind in zahlreichen Ausführungsformen bekannt und bestehen überwiegend aus einem Federblech mit einem ausgestanzten Schlitz, in den mittels eines Werkzeuges der isolierte Leiter eingedrückt wird. Da die lichte Weite des Schlitzes etwas geringer ist als der Leiterseelendurchmesser, wird die Isolation des Leiters an sich gegenüberliegenden Seiten durchdrungen und ein inniger Kontakt zwischen dem Leiter und dem Klemmelement hergestellt.Such clamping elements are known in numerous embodiments and mainly consist of a spring plate with a punched-out slot into which the insulated conductor is pressed by means of a tool. Since the clear width of the slot is slightly smaller than the conductor core diameter, the insulation of the conductor is penetrated on opposite sides and an intimate contact is made between the conductor and the clamping element.

Aufgabe der vorliegenden Erfidung ist es, ein Klemmelement zu schaffen, das einmal einfach und billig herstellbar ist und zum anderen als Einzelelement verwendet oder zu mehreren in einem Gehäuse untergebracht werden kann.The object of the present invention is to provide a clamping element which can be produced simply and cheaply and which can also be used as a single element or in a housing for several people.

Diese Aufgabe wird dadurch gelöst, daß das Klemmelement in seinem einen Endbereich eine innerhalb des Streifens befindliche Ausnehmung besitzt, deren mittlerer Bereich kreisförmig gestaltet ist, wobei sich an beiden Seiten dieses Bereiches keilförmig zulaufende Zonen erstrecken und daß das Klemmelement so abgebogen ist, das sich der kreisförmige Bereich im Scheitelpunkt dieser Abbiegung befindet.This object is achieved in that the clamping element has in its one end region a recess located within the strip, the central region of which is circular, with wedge-shaped zones extending on both sides of this region and that the clamping element is bent so that the circular area is located at the apex of this turn.

Durch eine derartige Gestaltung des einen abisolierfreien Anschluß eines isolierten Leiters gestattenden Bereiches kann dieses Klemmelement mittels eines einfachen Stanz-Biegevorganges kostengünstig erstellt werden. Die Gestaltung der Ausnehmung hat den weiteren Vorteil, daß ein Leiter beim Anklemmen leicht durch den kreisförmigen Bereich in den eigentlichen Klemmbereich eingeführt werden kann. Hierbei sind die keilförmig zulaufenden Zonen so gestaltet, daß ihre Enden eine geringere lichte Weite besitzen als der Seelendurchmesser des betreffenden anzuklemmenden Leiters. Aufgrund der keilförmigen Gestaltung der genannten Zonen können einmal Leiter unterschiedlicher Stärke mit dem Klemmelement kontaktiert werden, zum anderen wird der angeklemmte Leiter an vier Stellen mit dem Element kontaktiert, so daß eine sichere Kontaktgabe stets gewährleistet ist.With such a design of the stripped free connection of an insulated conductor permitting area, this clamping element can be created inexpensively by means of a simple stamping and bending process. The design of the recess has the further advantage that a conductor can easily be inserted through the circular area into the actual clamping area when it is clamped. Here, the tapered zones are designed so that their ends have a smaller internal width than the core diameter of the conductor to be clamped. Because of the wedge-shaped design of the zones mentioned, conductors of different thicknesses can be contacted with the clamping element, and the clamped conductor is contacted with the element at four points, so that reliable contacting is always guaranteed.

Dabei kann das dieser Ausnehmung benachbarte freie Ende des Klemnelementes eine Aussparung besitzen, deren lichte Weite gleich oder etwas geringer ist als der AuBendurchnesser des isolierten Leiters. Wird dieses die Aussparung enthaltende Ende zu dem die Ausnehmung aufweisenden Endbereich in der Weise abgebogen, daß die Ausnehmung und die keilförmig zulaufenden Zonen in etwa in einer Fluchtlinie liegen, so wird, wie bereits erwähnt, die Isolation des Leiters im Bereich der genannten Zonen durchtrennt, wobei die Aussparung am freien Ende die Isolation des Leiters umgreift und eine Zugentlastung für die eigentlichen Kontaktstellen bildet. Auch bei dieser Aussparung kann das Einführen des Leiters dadurch erleichtert werden, daß die freien Endbereiche dieser Aussparung mit Abschrägungen versehen sind. Das Eindrücken des Leiters kann mit einem Druckstück, das an dem Leiter an mehreren Stellen anliegt, erfolgen.The free end of the clamping element adjacent to this recess can have a recess whose inside width is equal to or slightly less than the outer diameter of the insulated conductor. If this end containing the recess is bent toward the end region having the recess in such a way that the recess and the wedge-shaped zones lie approximately in one line of alignment, then, as already mentioned, the insulation of the conductor is severed in the region of the zones mentioned, the recess at the free end engages around the insulation of the conductor and forms a strain relief for the actual contact points. With this recess, too, the insertion of the conductor can be facilitated in that the free end regions of this recess are provided with bevels. The conductor can be pressed in with a pressure piece which bears against the conductor at several points.

Die Erfindung soll im folgenden anhand eines Ausführungsbeispiels näher erläutert werden.The invention will be explained in more detail below using an exemplary embodiment.

Es zeigt

  • Fig. 1 ein Teil des Klemmelementes in einer abgewickelten Form
  • Fig. 2 das in einem Isolierstoffgehäuse teilweise befestigte Klemmelement in einer Seitenansicht
  • Fig. 3 das Klemmelement nach Fig. 2 in einer Rückansicht.
It shows
  • Fig. 1 shows a part of the clamping element in a developed form
  • Fig. 2 shows the clamping element partially fixed in an insulating housing in a side view
  • Fig. 3 shows the clamping element of FIG. 2 in a rear view.

Das in den Figuren dargestellte und aus einem flachen Streifen federnden Materials bestehende Klemmelement 1 besitzt in einem Endbereich 2 eine innerhalb des Streifens befindliche Ausnehmung 3, deren mittlerer Bereich 4 kreisförmig gestaltet ist. Zu beiden Seiten dieses Bereiches 4 erstrecken sich keilförmig zulaufende Zonen 5 und 6, deren geschlossene Enden 7 jeweils eine derartige lichte Weite aufweisen, die geringer bemessen ist als der Außendurchmesser einer Leiterseele 8 (Fig. 3). Das eine freie Ende 9 besitzt dagegen eine Aussparung 10, deren lichte Weite kleiner oder gleich groß dem Außendurchmesser eines isolierten Leiters 11 (fig. 3) ist.The clamping element 1 shown in the figures and consisting of a flat strip of resilient material has in an end region 2 a recess 3 located within the strip, the central region 4 of which is circular. On both sides of this area 4 there are wedge-shaped zones 5 and 6, the closed ends 7 of which each have a clear width which is smaller than the outer diameter of a conductor core 8 (FIG. 3). The one free end 9, on the other hand, has a recess 10, the clear width of which is smaller or equal to the outer diameter of an insulated conductor 11 (FIG. 3).

Wie in den Figuren 2 und 3 gezeigt, wird das Klemmelement 1 derart abgebogen, daß vom freien Ende 9 her gesehen zunächst ein rechteckförmiger Basisbereich 12 und ein sich an diesen anschließender bogenförmiger Bereich 13 gebildet wird, der anschließend in das andere freie Ende 14 übergeht. Dieses andere freie Ende kann z.B. als Steckkontakt oder zum AnschluB weiterer Leiter mittels bekannter AnschluBtechniken dienen.As shown in FIGS. 2 and 3, the clamping element 1 is bent in such a way that, seen from the free end 9, first a rectangular base region 12 and an adjoining arcuate region 13 is formed, which then merges into the other free end 14. This other free end can e.g. serve as a plug contact or for connecting additional conductors using known connection techniques.

Aufgrund der in Fig. 2 dargestellten Abbiegung des Klemmelementenstreifens, wobei die Aussparung 10 und die keilförmig zulaufenden Zonen in etwa in einer Fluchtlinie liegen, wird die Isolation des Leiters 11 an jeweils zwei sich gegenüberliegenden Stellen in den keilförmig zulaufenden Zonen-5 und 6 durchschnitten und somit ein inniger Kontakt der Leiterseele mit dem metallischen Klemmelement hergestellt. In der Aussparung 10 wird der Leiter 11 dagegen zugentlastet gehalten. Dabei wird das Eindrücken des Leiters 11 einmal durch den kreisförmig gestalteten Bereich 4 sowie durch die Abschrägungen 15 und 16 erleichtert. Das Eindrücken kann z.B. mittels eines Druckstückes erfolgen, das an dem Leiter an drei Punkten angreift. Dieses Klemmelement 1 läßt sich als Einzelelement verwenden und kann, wie in den Figuren 2 und 3 gezeigt, teilweise in Kunststoff 17 eingebettet sein. 5 Patentansprüche 3 FigurenDue to the bending of the clamping element strip shown in FIG. 2, with the recess 10 and the wedge-shaped tapering zones lying approximately in one line of alignment, the insulation of the conductor 11 is increased Weil intersected two opposite points in the wedge-shaped tapered zones-5 and 6 and thus an intimate contact of the conductor core with the metallic clamping element was made. In contrast, the conductor 11 is held in the recess 10 with strain relief. In this case, the indentation of the conductor 11 is made easier once by the circular area 4 and by the bevels 15 and 16. The indentation can take place, for example, by means of a pressure piece which engages the conductor at three points. This clamping element 1 can be used as a single element and, as shown in FIGS. 2 and 3, can be partially embedded in plastic 17. 5 claims 3 figures

Claims (5)

1. Aus einem flachen Streifen bestehendes Klemmelement zum abisolierfreien Anschluß isolierter elektrischer Leiter, dadurch gekennzeichnet , daß das Klemmelement in seinem einen Endbereich eine innerhalb des Streifens befindliche Ausnehmung (3) besitzt, deren mittlerer Bereich (4) kreisförmig gestaltet ist, wobei sich an beiden Seiten dieses Bereiches (4) keilförmig zulaufende Zonen (5, 6) erstrecken und daß das Klemmelement so abgebogen ist, daß sich der kreisförmige Bereich (4) im Scheitelpunkt dieser Abbiegung (13) befindet.1. A flat strip of clamping element for stripping-free connection of insulated electrical conductors, characterized in that the clamping element has in its one end region a recess (3) located within the strip, the central region (4) of which is circular, with both Sides of this area (4) extend tapered zones (5, 6) and that the clamping element is bent so that the circular area (4) is at the apex of this bend (13). 2. Klemmelement nach Anspruch 1, dadurch gekennzeichnet , daß die Enden der keilförmig zulaufenden Zonen (5, 6) eine geringere lichte Weite als der Seelendurchmesser des anzuklemmenden Leiters besitzen.2. Clamping element according to claim 1, characterized in that the ends of the tapered zones (5, 6) have a smaller internal width than the core diameter of the conductor to be clamped. 3. Klemmelement nach Anspruch 1, dadurch gekennzeichnet , daß das dieser Ausnehmung (3) benachbarte freie Ende (9) des Klemmelementes (1) eine Aussparung (10) aufweist, deren lichte Weite gleich oder etwas geringer ist als der Außendurchmesser des isolierten Leiters.3. Clamping element according to claim 1, characterized in that this recess (3) adjacent free end (9) of the clamping element (1) has a recess (10) whose internal width is equal to or slightly less than the outer diameter of the insulated conductor. 4. Klemmelement nach Anspruch 1 und 3, dadurch gekennzeichnet , daß das freie Ende (9) derart zu dem die Ausnehmung enthaltenden gebogenen Bereich (13) umgebogen ist, daß die Aussparung (10) und die keilförmig zulaufenden Zonen (5, 6) in etwa in einer Fluchtlinie liegen.4. Clamping element according to claim 1 and 3, characterized in that the free end (9) is bent over to the bent region (13) containing the recess in such a way that the recess (10) and the wedge-shaped zones (5, 6) in about in line. 5. Klenmeleinent nach Anspruch 3) dadurch gekennzeichnet daß die freien Endbereiche der Aussparung Abschräsungen (15, 16) besitzen.5. Klenmeleinent according to claim 3) characterized in that the free end regions of the recess have chamfers (15, 16).
EP81107869A 1980-10-29 1981-10-02 Clamping element for the connexion without stripping of electrical conductors Withdrawn EP0051153A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3040743 1980-10-29
DE19803040743 DE3040743A1 (en) 1980-10-29 1980-10-29 CLAMPING ELEMENT FOR STRIP-FREE CONNECTION OF ELECTRICAL LADDERS

Publications (1)

Publication Number Publication Date
EP0051153A1 true EP0051153A1 (en) 1982-05-12

Family

ID=6115457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81107869A Withdrawn EP0051153A1 (en) 1980-10-29 1981-10-02 Clamping element for the connexion without stripping of electrical conductors

Country Status (2)

Country Link
EP (1) EP0051153A1 (en)
DE (1) DE3040743A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9416056U1 (en) * 1994-10-06 1994-11-24 Stocko Metallwarenfabriken Henkels Und Sohn Gmbh & Co, 42327 Wuppertal Lockable blade receptacle for an electrical connection

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1918591A1 (en) * 1968-04-26 1969-11-13 Amp Inc Electrical connection terminal
US3702456A (en) * 1971-04-07 1972-11-07 Amp Inc Electrical terminal block for interconnecting a plurality of conductors
DE2325756A1 (en) * 1972-05-30 1973-12-20 Amp Inc ELECTRICAL CONTACTOR
DE2653357A1 (en) * 1976-11-24 1978-06-01 Siemens Ag Clamping connection for conductors - has clamping slot tighter than conductor and is surrounded by insulation support obviating necessity for stripping

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1918591A1 (en) * 1968-04-26 1969-11-13 Amp Inc Electrical connection terminal
US3702456A (en) * 1971-04-07 1972-11-07 Amp Inc Electrical terminal block for interconnecting a plurality of conductors
DE2325756A1 (en) * 1972-05-30 1973-12-20 Amp Inc ELECTRICAL CONTACTOR
US3895852A (en) * 1972-05-30 1975-07-22 Amp Inc Slotted plate type electrical connections
DE2653357A1 (en) * 1976-11-24 1978-06-01 Siemens Ag Clamping connection for conductors - has clamping slot tighter than conductor and is surrounded by insulation support obviating necessity for stripping

Also Published As

Publication number Publication date
DE3040743A1 (en) 1982-05-13

Similar Documents

Publication Publication Date Title
DE2460848C2 (en) Current clamp
DE69300865T2 (en) ELECTRICAL CONNECTOR WITH SHEET AS PLUG-IN CONTACT MATERIAL.
DE2234960C3 (en) Electrical plug
DE19705509C2 (en) One-piece contact spring
DE3876646T2 (en) ELECTRICAL TERMINAL.
DE3137429A1 (en) DEVICE FOR PRODUCING A LOET, - SCREW-AND STRIP-FREE, SINGLE OR MULTIPLE CONTACTS ON A CONNECTING ELEMENT
EP0041596A2 (en) Terminal blocks for connecting insulated wires with double-contact connector elements
CH647895A5 (en) ELECTRICAL CONNECTING PART, METHOD FOR CONNECTING IT TO AN ELECTRICAL CONDUCTOR AND CONNECTOR TO A MULTIPLE NUMBER OF CONNECTING PARTS.
DE2456977A1 (en) STRAIN RELIEF FOR LINE CONNECTIONS
DE1765818B2 (en) Connection clamp for pressing against electrical wires
DE2247498C3 (en)
DE1490561B2 (en) SPRING ELEMENT FOR PLUG CONNECTIONS
DE9412680U1 (en) Printed circuit connectors
DE3938608C2 (en) Electrical pressure or crimp contact connector
DE10255674B4 (en) Terminal block with pluggable cross jumper
DE1515527B2 (en) Electrical contact member
DE2131769B2 (en) Resilient electrical solderless connector - has conductor contact and support slits in different planes for clamping action
DE2628090A1 (en) ELECTRICAL CONNECTOR
EP1020954B1 (en) Electric connecting terminal
DE2927468A1 (en) CONTACT FOR AN ELECTRICAL CONNECTOR
EP0525457B1 (en) Insulation displacement contact terminal
EP0051153A1 (en) Clamping element for the connexion without stripping of electrical conductors
DE202007010371U1 (en) Connector for eight different memory cards
DE2140453C3 (en) Contact spring for connectors
DE3932346C2 (en) Electrical connector

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19811002

AK Designated contracting states

Designated state(s): CH FR GB IT SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19840404

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SCHOLTHOLT, HANS

Inventor name: THOM, GUENTER

Inventor name: STEINER, EWALD