WO1995002905A1 - Insulation displacement contact element - Google Patents
Insulation displacement contact element Download PDFInfo
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- WO1995002905A1 WO1995002905A1 PCT/EP1994/002259 EP9402259W WO9502905A1 WO 1995002905 A1 WO1995002905 A1 WO 1995002905A1 EP 9402259 W EP9402259 W EP 9402259W WO 9502905 A1 WO9502905 A1 WO 9502905A1
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- contact
- insulation displacement
- legs
- contact element
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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
- H01R4/24—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
Definitions
- the invention relates to an insulation displacement contact element according to the preamble of claim 1.
- Such insulation displacement contact elements are used in particular in telecommunications and data transmission technology.
- an insulated electrical conductor is pressed into the contact slot of the insulation displacement contact element, the insulation is cut through and a conductive contact is established between the conductor and the insulation displacement contact element.
- a generic insulation displacement contact element which has two flat contact legs which lie in a common plane and which are separated by a contact slot, the contacting surfaces of which are perpendicular to this common plane.
- This insulation displacement contact element is usually arranged in its housing so that it is tilted by 45 ° about its longitudinal axis and the electrical conductor to be contacted is inserted into the contact slot with its longitudinal axis at a 45 ° angle with respect to the contact leg plane becomes.
- FIG. 8 in the known insulation displacement contact element 1 ' there is a shear stress on the connected conductor 12, which leads to an indentation of the conductor and thus to a risk of shearing off, in particular in the case of thin wires or strands.
- an insulation displacement contact element in which two contact legs are separated from one another by shearing along a contact slot and in which the contact legs are offset from one another in the transverse direction to the contact leg plane by the amount of the thickness of the contact legs by a contact slot width in Achieve range from 0 mm to 0.05 mm.
- the contact legs are rotated against one another after their separation.
- IDC contact elements are preferably arranged at an angle so that the IDC contact element is at an angle with the longitudinal axis of the connected conductor, e.g. in the range of 30 ° to 60 °.
- This conventional insulation displacement contact element also has the problem described above that the contact edges of the contact slot stress the connected conductor for shear and cause a notch effect.
- an insulation displacement contact element having the features of claim 1.
- the oblique arrangement of the contact surfaces results in a flat contact between the connected conductor and the contact legs in the insulation displacement contact element according to the invention. Because the conductor is contacted with the contact surfaces and the sharp edges between the contact surfaces and the adjacent surfaces of the contact legs do not cut into the conductor, there is no indentation and there is no risk of shearing off, in particular, thin connected conductors.
- the connected conductor generates a torsional stress in the contact legs and is thus held securely by the twisted contact legs.
- the contact surfaces with the contact leg plane preferably form an angle in the range from 35 ° to 85 °.
- an embodiment is advantageous in which the contact surfaces form an angle of 45 ° with the contact leg plane.
- the insulation displacement contact element can be arranged perpendicular to the longitudinal axis of the conductor to be connected.
- the insulation displacement contact element according to the invention can be manufactured with a single follow-up tool, since no further deformation or bending operations follow the production of the incision with the obliquely oriented contact surfaces.
- the contact surfaces are expediently punched out of the metallic, electrically conductive material from which the insulation displacement contact element is produced.
- a further embodiment is provided in which the contact slot width is reduced beyond what is possible in terms of stamping technology.
- two adjacent contact limbs are each displaced in the transverse direction to the incision they enclose within the contact limb plane in order to reduce the distance between the two associated contact surfaces. This additional pushing together of two associated contact surfaces through plastic deformation of the associated contact legs allows the contact slot width to be reduced to a width of 0 mm.
- the contact slot width that can be achieved by stamping technology is approximately in the range of 0.3 mm.
- the contact slot width can be optimally adapted to the thickness of the conductor to be connected. In this way, even for very thin connected conductors, there is flat contacting without shear stress.
- a further advantageous embodiment of the insulation displacement contact element according to the invention in which an additional pretension, by which also very thin connected conductors are securely held between the contact surfaces, into which associated contact legs are inserted.
- the contact slot width is reduced to 0 mm, specifically in the manner described above, but a preload is additionally impressed, ie a force which additionally presses the contact surfaces lying against one another.
- This preload is present after a brief displacement of the contact surfaces lying on top of each other and transversely to the contact leg level.Therefore, even very thin connected conductors are permanently contacted by the preload force, although due to their small diameter, these conductors cannot automatically generate any torsional stress in the contact legs.
- the contact surfaces of two adjacent notches each run in opposite directions with respect to one another in their oblique orientation.
- contact surfaces which are inclined in the same direction and in opposite directions follow one another, the contact surfaces within an incision naturally always running essentially parallel to one another.
- Fig. 1 shows a first embodiment of the insulation displacement contact element according to the invention with a Contacting slot in the top view;
- FIG. 2 shows the insulation displacement contact element according to FIG. 1 in cross section along I-I;
- FIG. 3 shows the insulation displacement contact element according to FIG. 1 with a connected wire in cross section
- FIG. 4 shows a second embodiment of the insulation displacement contact element according to the invention with two contacting slots in cross section
- FIG. 5 shows the insulation displacement contact element according to FIG. 4 with two connected wires in cross section
- FIG. 6 shows a third embodiment of the insulation displacement contact element according to the invention in cross section
- FIG. 7a shows a fourth embodiment of the insulation displacement contact element according to the invention in cross section during a production step
- FIG. 7b the insulation displacement contact element according to FIG. 7a in cross section in the final state
- Fig. 8 is a schematic representation of the shear stress of a connected conductor in a conventional insulation displacement contact element in cross section.
- the insulation displacement contact element has two contact legs 2a, 2b which are connected to one another in one piece via a connecting region 4.
- the two contact legs 2a, 2b are separated from one another along an incision that includes a bay-shaped input area 6, an adjoining contact slot 3 and an approximately oval relief opening 5 lying between the contact slot 3 and the transition area 4.
- the contacting slot 3 is delimited by contact areas 3a, 3b which run parallel to one another.
- the contacting slot is punched out of the material of the insulation displacement contact element 1, the two contact legs 2a, 2b remaining in a common plane.
- FIG. 3 shows how a connected wire 10 is contacted in the insulation displacement contact element 1 according to FIGS. 1 and 3.
- the insulation 11 is automatically cut off in the area of the contact surfaces 3a and 3b, so that the conductor 12 of the wire 10 comes into direct contact with the contact surfaces 3a, 3b and thus the electrical contact between the insulation displacement contact Contact element 1 and the conductor 12 is made.
- the insulation displacement contact Contact element 1 and the conductor 12 is made.
- the stripped section of the conductor 12 lies flat against the contact surfaces 3a, 3b, so that there is no shear stress on the conductor 12 and no notches occur because the acute-angled edges of the contact legs 2a, 2b, which are caused by the contiguity of the contact surfaces 3a, 3b with the respective surfaces 7a, 7b are formed, cannot penetrate into the conductor 12.
- the wire 10 produces a twist of the contact legs 2a, 2b against each other, so that it is held permanently and securely contacted by this torsional tension.
- the contacting slots 3 'and the contact surfaces 3a ' , 3b ', 3c ' , 3d ' are designed in accordance with the first embodiment according to FIGS. 1 to 3, the contact surfaces each having an angle oi. with the contact leg level, ie the level in which all three contact legs 2c, 2d, 2e lie.
- the inclination of the contacting slots 3 ' is oriented such that the contacting slots are inclined in opposite directions to one another. Since the two angles o ⁇ are the same in this example, this is
- IDC contact element axisymmetric. 5 shows that the two connected wires 10 are held in a manner analogous to the situation in the first embodiment of the insulation displacement contact element (cf. FIG. 3) by means of a torsional stress such that the stripped areas of the wires 10, the conductors 12, are in flat contact with the contact surfaces 3a ', 3b', 3c ', 3d'.
- the third embodiment of the insulation displacement contact element shown in FIG. 6 has a contact slot width d that is further reduced compared to the minimum contact slot width that can be achieved by stamping technology.
- the contact legs 2a, 2b are pushed towards one another in the contact leg plane in one step during the stamping process (see arrow direction) and this plastic deformation results in a contact slot width d in the range from approximately 0 mm to 0.3 mm achieved, ie compared to the contact slot width achievable by stamping technology, any reduction in the distance between the two contact surfaces 3a, 3b up to their contact is achieved in this embodiment.
- the inclination of the contact surfaces 3a, 3b with respect to the contact leg planes is also retained in this embodiment, the two contact legs 2a, 2b lying in a common plane.
- FIG. 7a A fourth embodiment of the insulation displacement contact element is shown in FIG. 7a during a manufacturing step and in FIG. 7b in its final state.
- the contact legs 2a, 2b are displaced in the common contact plane of the contact surfaces 3a, 3b against one another transversely to the contact leg plane (cf. arrows in FIG. 7a), so that after this brief displacement of the contact legs 2a, 2b against each other sets a final state according to FIG. 7b, in which the two contact legs 2a, 2b lie in a common plane and the contact surfaces 3a, 3b lie on one another. Due to the brief displacement according to FIG. 7a, this fourth embodiment of the
- An insulation displacement contact element impresses a prestress so that the two contact surfaces 3a, 3b are pressed against one another with a prestressing force in the direction of the common plane of the contact legs 2a, 2b. Also particularly thin strands that can no longer cause torsion in the contact legs 2a, 2b when they are in the
- Contacting slot 3 are pushed, are reliably contacted by the contact surfaces 3a, 3b and permanently held due to the bias.
Landscapes
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Scissors And Nippers (AREA)
- Breakers (AREA)
- Contacts (AREA)
- Wire Bonding (AREA)
- Multi-Conductor Connections (AREA)
Abstract
Description
Schneidklemm-Kontaktelement IDC contact element
Die Erfindung betrifft ein Schneidklemm-Kontaktelement gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an insulation displacement contact element according to the preamble of claim 1.
Derartige Schneidklemm-Kontaktelemente werden insbesondere in der Fernmelde- und Datenübertragungstechnik verwendet. Beim Eindrücken eines isolierten elektrischen Leiters in den Kontaktschlitz des Schneidklemm-Kontaktelements wird die Isolation durchschnitten und ein leitender Kontakt zwischen dem Leiter und dem Schneidklemm-Kontaktelement hergestellt.Such insulation displacement contact elements are used in particular in telecommunications and data transmission technology. When an insulated electrical conductor is pressed into the contact slot of the insulation displacement contact element, the insulation is cut through and a conductive contact is established between the conductor and the insulation displacement contact element.
Es ist ein gattungsgemäßes Schneidklemm-Kontaktelement bekannt, das zwei flache Kontaktschenkel aufweist, die in einer gemeinsamen Ebene liegen und die durch einen Kontaktschlitz getrennt sind, dessen Kontaktierungsfl chen senkrecht zu dieser gemeinsamen Ebene verlaufen. Dieses Schneidklemm-Kontaktelement wird in der Regel in seinem Gehäuse so angeordnet, daß es um seine Längsachse um 45° verkippt ist und der zu kontaktierende elektrische Leiter mit seiner Ader-Längsachse in einem 45°-Winkel in bezug auf die Kontaktschenkelebene in den Kontaktschlitz eingeführt wird. Wie in Fig. 8 schematisch illustriert, kommt es bei dem bekannten Schneidklemm-Kontaktelement 1' zu einer Scherbelastung auf den angeschlossenen Leiter 12, was zu einer Einkerbung des Leiters und damit zu einer Gefahr des Abscherens, insbesondere bei dünnen Drähten oder Litzen, führt. Aus der DE 41 26 068 Cl ist ein Schneidklemm-Kontaktelement bekannt, bei dem zwei Kontaktschenkel durch Scherung voneinander entlang eines Kontaktschlitzes getrennt werden und bei dem die Kontaktschenkel in Querrichtung zur Kontaktschenkelebene gegeneinander um den Betrag der Dicke der Kontaktschenkel versetzt werden, um eine Kontaktschlitzbreite im Bereich von 0 mm bis 0.05 mm zu erzielen. Bei einer zweiten in dieser Druckschrift offenbarten Variante werden die Kontaktschenkel nach ihrer Trennung gegeneinander verdreht. DieseA generic insulation displacement contact element is known which has two flat contact legs which lie in a common plane and which are separated by a contact slot, the contacting surfaces of which are perpendicular to this common plane. This insulation displacement contact element is usually arranged in its housing so that it is tilted by 45 ° about its longitudinal axis and the electrical conductor to be contacted is inserted into the contact slot with its longitudinal axis at a 45 ° angle with respect to the contact leg plane becomes. As schematically illustrated in FIG. 8, in the known insulation displacement contact element 1 ' there is a shear stress on the connected conductor 12, which leads to an indentation of the conductor and thus to a risk of shearing off, in particular in the case of thin wires or strands. From DE 41 26 068 Cl an insulation displacement contact element is known in which two contact legs are separated from one another by shearing along a contact slot and in which the contact legs are offset from one another in the transverse direction to the contact leg plane by the amount of the thickness of the contact legs by a contact slot width in Achieve range from 0 mm to 0.05 mm. In a second variant disclosed in this document, the contact legs are rotated against one another after their separation. This
Schneidklemm-Kontaktelemente werden vorzugsweise schräg angeordnet, so daß das Schneidklemm-Kontaktelement mit der Längsachse des angeschlossenen Leiters einen Winkel z.B. im Bereich von 30° bis 60° einschließt. Auch bei diesem herkömmlichen Schneidklemm-Kontaktelement tritt das oben beschriebene Problem auf, daß die Kontaktkanten des Kontaktschlitzes den angeschlossenen Leiter auf Scherung beanspruchen und eine Kerbwirkung verursachen.IDC contact elements are preferably arranged at an angle so that the IDC contact element is at an angle with the longitudinal axis of the connected conductor, e.g. in the range of 30 ° to 60 °. This conventional insulation displacement contact element also has the problem described above that the contact edges of the contact slot stress the connected conductor for shear and cause a notch effect.
Das Problem einer Scherbeanspruchung und Einkerbung eines angeschlossenen Leiters tritt auf bei einem weiteren bekannten Schneidklemm-Kontaktelement auf, bei dem zwei Kontaktschenkel gleichsinnig aus der Kontaktschenkelebene um ca. 15° herausgedreht sind, um die Kontaktschlitzbreite zu verkleinern.The problem of shear stress and notching of a connected conductor occurs in another known insulation displacement contact element in which two contact legs are rotated in the same direction out of the contact leg plane by approximately 15 ° in order to reduce the contact slot width.
Es ist daher die Aufgabe der vorliegenden Erfindung, ein Schneidklemm-Kontaktelement zu schaffen, bei dem ein angeschlossener Leiter nicht auf Scherung beansprucht wird und es zu keiner Einkerbung des Leiters kommt.It is therefore the object of the present invention to provide an insulation displacement contact element in which a connected conductor is not subjected to shear stress and there is no indentation of the conductor.
Diese Aufgabe wird erfindungsgemäß durch ein Schneidklemm-Kontaktelement mit den Merkmalen des Anspruchs 1 gelöst. Durch die Schräganordnung der Kontaktflächen ergibt sich beim erfindungsgemäßen Schneidklemm-Kontaktelement eine flächige Kontaktierung zwischen dem angeschlossenen Leiter und den Kontaktschenkeln. Dadurch, daß der Leiter mit den Kontaktflächen kontaktiert wird und sich nicht die scharfen Kanten zwischen den Kontaktflächen und den angrenzenden Oberflächen der Kontaktschenkel in den Leiter einschneiden, kommt es zu keiner Einkerbung und es besteht nicht die Gefahr des Abscherens insbesondere dünner angeschlossener Leiter. Der angeschlossene Leiter erzeugt in den Kontaktschenkeln eine Torsionsspannung und wird so sicher von den verwundenen Kontaktschenkeln gehalten.This object is achieved according to the invention by an insulation displacement contact element having the features of claim 1. The oblique arrangement of the contact surfaces results in a flat contact between the connected conductor and the contact legs in the insulation displacement contact element according to the invention. Because the conductor is contacted with the contact surfaces and the sharp edges between the contact surfaces and the adjacent surfaces of the contact legs do not cut into the conductor, there is no indentation and there is no risk of shearing off, in particular, thin connected conductors. The connected conductor generates a torsional stress in the contact legs and is thus held securely by the twisted contact legs.
Vorzugsweise schließen die Kontaktflächen mit der Kontaktschenkelebene einen Winkel im Bereich von 35° bis 85° ein. Insbesondere ist eine Ausführungsform vorteilhaft, bei der die Kontaktflächen mit der Kontaktschenkelebene einen Winkel von 45° einschließen. Bei der 45°-Schrägorientierung der Kontaktflächen bezüglich der Kontaktschenkelebene kann das Schneidklemm-Kontaktelement senkrecht zur Längsachse des anzuschließenden Leiters angeordnet werden.The contact surfaces with the contact leg plane preferably form an angle in the range from 35 ° to 85 °. In particular, an embodiment is advantageous in which the contact surfaces form an angle of 45 ° with the contact leg plane. With the 45 ° inclined orientation of the contact surfaces with respect to the contact leg plane, the insulation displacement contact element can be arranged perpendicular to the longitudinal axis of the conductor to be connected.
Das erfindungsgemäße Schneidklemm-Kontaktelement kann mit einem einzigen Folgewerkzeug gefertigt werden, da sich an die Herstellung des Einschnitts mit den schrägorientierten Kontaktflächen keine weiteren Verformungs- oder Biegevorgänge anschließen. Zweckmäßigerweise sind die Kontaktflächen aus dem metallischen, elektrisch leitenden Material, aus dem das Schneidklemm-Kontaktelement hergestellt wird, ausgestanzt.The insulation displacement contact element according to the invention can be manufactured with a single follow-up tool, since no further deformation or bending operations follow the production of the incision with the obliquely oriented contact surfaces. The contact surfaces are expediently punched out of the metallic, electrically conductive material from which the insulation displacement contact element is produced.
Nachdem stanztechnisch nur eine Kontaktschlitzweite, d.h. ein Abstand zwischen den parallelen Kontaktflächen, oberhalb des etwa 0.6-fachen der Materialstärke der Kontaktschenkel herstellbar ist, ist eine weitere Ausführungsform vorgesehen, bei der die Kontaktschlitzweite über das stanztechnisch mögliche Maß hinaus verringert wird. Bei dieser vorteilhaften Ausführungsform sind jeweils zwei benachbarte Kontaktschenkel in Querrichtung zum von ihnen eingefaßten Einschnitt innerhalb der Kontaktschenkelebene verschoben, um den Abstand zwischen den jeweils zwei zusammengehörigen Kontaktflächen zu verringern. Durch dieses zusätzliche Zusammenschieben zweier zusammengehöriger Kontaktflächen durch plastische Verformung der zugehörigen Kontaktschenkel kann die Kontaktschlitzweite bis auf eine Weite von 0 mm reduziert werden. Da die Materialstärke des plattenförmigen, elektrisch leitenden metallischen Materials, aus dem die Schneidklemm-Kontaktelemente hergestellt sind, üblicherweise im Bereich von 0.5 mm liegt, liegt die stanztechnisch realisierbare Kontaktschlitzweite etwa im Bereich von 0.3 mm. Somit ist mit herkömmlichen gattungsgemäßen Schneidklemm-Kontaktelementen, bei denen lediglich der Kontaktschlitz ausgestanzt ist, aber keine weitere Verformung der Kontaktschenkel vorgenommen wurde, die sichere Kontaktierung dünner Drähte und Litzen problematisch, da die minimal erzielbare Kontaktschlitzweite für ein sicheres Festhalten des elektrischen Leiters im Schlitz nicht ausreicht. Demgegenüber kann bei der oben beschriebenen erfindungsgemäßen Ausführungsform die Kontaktschlitzweite optimal an die Dicke des anzuschließenden Leiters angepaßt werden. Dabei ergibt sich dann auch für sehr dünne angeschlossene Leiter eine flächige Kontaktierung ohne Scherbelastung.Since only a contact slot width, ie a distance between the parallel contact surfaces, can be produced by stamping technology, about 0.6 times the material thickness of the contact legs, a further embodiment is provided in which the contact slot width is reduced beyond what is possible in terms of stamping technology. In this advantageous embodiment, two adjacent contact limbs are each displaced in the transverse direction to the incision they enclose within the contact limb plane in order to reduce the distance between the two associated contact surfaces. This additional pushing together of two associated contact surfaces through plastic deformation of the associated contact legs allows the contact slot width to be reduced to a width of 0 mm. Since the material thickness of the plate-shaped, electrically conductive metallic material from which the insulation displacement contact elements are made is usually in the range of 0.5 mm, the contact slot width that can be achieved by stamping technology is approximately in the range of 0.3 mm. Thus, with conventional generic insulation displacement contact elements, in which only the contact slot is punched out, but no further deformation of the contact limbs has been carried out, the secure contacting of thin wires and strands is problematic, since the minimum contact slot width that can be achieved does not ensure that the electrical conductor is securely held in the slot is sufficient. In contrast, in the embodiment of the invention described above, the contact slot width can be optimally adapted to the thickness of the conductor to be connected. In this way, even for very thin connected conductors, there is flat contacting without shear stress.
Da bei sehr dünnen angeschlossenen Leitern oftmals keine ausreichende Torsion in den Kontaktschenkeln erzeugt wird, um die Dauerhaftigkeit der Kontaktierung sicherzustellen, ist eine weitere vorteilhafte Ausführungsform des erfindungsgemäßen Schneidklemm-Kontaktelements vorgesehen, bei der eine zusätzliche Vorspannung, durch die auch sehr dünne angeschlossene Leiter zwischen den Kontaktflächen sicher gehalten werden, in die zusammengehörigen Kontaktschenkel eingebracht wird. Bei dieser Ausführungsforrn ist die Kontaktschlitzweite auf 0 mm reduziert, und zwar in der vorangehend beschriebenen Art, jedoch ist zusätzlich eine Vorspannung eingeprägt, d.h. eine Kraft, die die aneinanderliegenden Kontaktflächen zusätzlich aufeinander drückt. Diese Vorspannung liegt nach einem kurzzeitigen Verschieben der aufeinander liegenden Kontaktflächen gegeneinander und quer zur Kontaktschenkelebene vor.- Durch die Vorspannungskraft werden also auch sehr dünne angeschlossene Leiter dauerhaft sicher kontaktiert, obwohl diese aufgrund ihres geringen Durchmessers von sich aus keine Torsionsspannung in den Kontaktschenkeln erzeugen können.Since, in the case of very thin connected conductors, sufficient torsion is often not generated in the contact legs in order to ensure the durability of the contacting, a further advantageous embodiment of the insulation displacement contact element according to the invention is provided, in which an additional pretension, by which also very thin connected conductors are securely held between the contact surfaces, into which associated contact legs are inserted. In this embodiment, the contact slot width is reduced to 0 mm, specifically in the manner described above, but a preload is additionally impressed, ie a force which additionally presses the contact surfaces lying against one another. This preload is present after a brief displacement of the contact surfaces lying on top of each other and transversely to the contact leg level.Therefore, even very thin connected conductors are permanently contacted by the preload force, although due to their small diameter, these conductors cannot automatically generate any torsional stress in the contact legs.
Bei den vorangehend beschriebenen Ausführungsformen ist es für den Fall, daß mehrere Einschnitte zur gleichzeitigen Kontaktierung mehrerer elektrischer Leiter vorgesehen sind, bevorzugt, daß die Kontaktflächen jeweils zweier benachbarter Einschnitte in ihrer Schrägorientierung zueinander gegensinnig verlaufen. Mit anderen Worten folgen in einer Reihe nebeneinander angeordneter Einschnitte jeweils abwechselnd gleichsinnig und gegensinnig schräggestellte Kontaktflächen aufeinander, wobei natürlich die Kontaktflächen innerhalb eines Einschnitts immer im wesentlichen parallel zueinander verlaufen.In the case of the embodiments described above, in the event that a plurality of notches are provided for the simultaneous contacting of a plurality of electrical conductors, it is preferred that the contact surfaces of two adjacent notches each run in opposite directions with respect to one another in their oblique orientation. In other words, in a row of incisions arranged next to one another, contact surfaces which are inclined in the same direction and in opposite directions follow one another, the contact surfaces within an incision naturally always running essentially parallel to one another.
Nachfolgend werden Ausführungεbeispiele des erfindungsgemäßen Schneidklemm-Kontaktelements mit Bezug auf die beigefügten Zeichnungen näher erläutert.Exemplary embodiments of the insulation displacement contact element according to the invention are explained in more detail below with reference to the attached drawings.
Es zeigen:Show it:
Fig. 1 eine erste Ausführungsforrn des erfindungsgemäßen Schneidklemm-Kontaktelements mit einem Kontaktierungsschlitz in der Draufsicht;Fig. 1 shows a first embodiment of the insulation displacement contact element according to the invention with a Contacting slot in the top view;
Fig. 2 das Schneidklemm-Kontaktelement gemäß Fig. 1 im Querschnitt entlang I-I;FIG. 2 shows the insulation displacement contact element according to FIG. 1 in cross section along I-I;
Fig. 3 das Schneidklemm-Kontaktelement gemäß Fig. 1 mit angeschlossener Ader im Querschnitt;3 shows the insulation displacement contact element according to FIG. 1 with a connected wire in cross section;
Fig. 4 eine zweite Ausführungsform des erfindungsgemäßen Schneidklemm-Kontaktelements mit zwei Kontaktierungsschlitzen im Querschnitt;4 shows a second embodiment of the insulation displacement contact element according to the invention with two contacting slots in cross section;
Fig. 5 das Schneidklemm-Kontaktelement gemäß Fig. 4 mit zwei angeschlossenen Adern im Querschnitt;5 shows the insulation displacement contact element according to FIG. 4 with two connected wires in cross section;
Fig. 6 eine dritte Ausführungsform des erfindungsgemäßen Schneidklemm-Kontaktelements im Querschnitt;6 shows a third embodiment of the insulation displacement contact element according to the invention in cross section;
Fig. 7a eine vierte Ausführungsform des erfindungsgemäßen Schneidklemm-Kontaktelements während eines Fertigungsschritts im Querschnitt;7a shows a fourth embodiment of the insulation displacement contact element according to the invention in cross section during a production step;
Fig. 7b das Schneidklemm-Kontaktelement gemäß Fig. 7a im Endzustand im Querschnitt;FIG. 7b the insulation displacement contact element according to FIG. 7a in cross section in the final state; FIG.
Fig. 8 eine schematische Darstellung der Scherbeanspruchung eines angeschlossenen Leiters bei einem herkömmlichen Schneidklemm-Kontaktelement im Querschnitt.Fig. 8 is a schematic representation of the shear stress of a connected conductor in a conventional insulation displacement contact element in cross section.
Bei einer ersten Ausführungsforrn gemäß den Fig. 1 und 2 weist das Schneidklemm-Kontaktelement zwei Kontaktschenkel 2a, 2b auf, die einstückig über einen Verbindungsbereich 4 miteinander verbunden sind. Die beiden Kontaktschenkel 2a, 2b sind voneinander entlang eines Einschnitts getrennt, der einen buchtför igen Eingangsbereich 6, einen sich daran anschließenden Kontaktierungsschlitz 3 und eine zwischen dem Kontaktierungsschlitz 3 und dem Übergangsbereich 4 liegende, in etwa ovale Entlastungsöffnung 5 umfaßt. Der Kontaktierungsschlitz 3 wird von Kontaktflächen 3a, 3b begrenzt, die zueinander parallel verlaufen. Die Kontaktflächen 3a, 3b schließen jeweils einen Winkel <^ mit der Kontaktschenkelebene ein, d.h. mit der Ebene, in der die beiden Kontaktschenkel 3a, 3b liegen. Im dargestellten Beispiel ist k = 45°. Der Kontaktierungsschlitz ist aus dem Material des Schneidklemm-Kontaktelements 1 ausgestanzt, wobei die beiden Kontaktschenkel 2a, 2b in einer gemeinsamen Ebene verbleiben.In a first embodiment according to FIGS. 1 and 2, the insulation displacement contact element has two contact legs 2a, 2b which are connected to one another in one piece via a connecting region 4. The two contact legs 2a, 2b are separated from one another along an incision that includes a bay-shaped input area 6, an adjoining contact slot 3 and an approximately oval relief opening 5 lying between the contact slot 3 and the transition area 4. The contacting slot 3 is delimited by contact areas 3a, 3b which run parallel to one another. The contact surfaces 3a, 3b each form an angle <with the contact leg plane, ie with the plane in which the two contact legs 3a, 3b lie. In the example shown, k = 45 °. The contacting slot is punched out of the material of the insulation displacement contact element 1, the two contact legs 2a, 2b remaining in a common plane.
In Fig. 3 ist gezeigt, wie eine angeschlossene Ader 10 im Schneidklemm-Kontaktelement 1 gemäß den Fig. 1 und 3 kontaktiert wird. Beim Einführen der Ader 10 in den Kontaktschlitz 3 wird automatisch die Isolierung 11 im Bereich der Kontaktflächen 3a und 3b abgeschnitten, so daß der Leiter 12 der Ader 10 in unmittelbaren Kontakt mit den Kontaktflächen 3a, 3b gelangt und somit die elektrische Kontaktierung zwischen dem Schneidklemm-Kontaktelement 1 und dem Leiter 12 hergestellt wird. Wie Fig. 3 verdeutlicht, liegt der abisolierte Abschnitt des Leiters 12 flächig an den Kontaktflächen 3a, 3b an, so daß es zu keiner Scherbelastung des Leiters 12 kommt und auch keine Einkerbungen auftreten, da die spitzwinkligen Kanten der Kontaktschenkel 2a, 2b, die durch das Aneinandergrenzen der Kontaktflächen 3a, 3b mit den jeweiligen Flächen 7a, 7b gebildet werden, nicht in den Leiter 12 eindringen können. Die Ader 10 erzeugt eine Verwindung der Kontaktschenkel 2a, 2b gegeneinander, so daß er durch diese Torsionsspannung dauerhaft gehalten und sicher kontaktiert wird. Bei der in den Fig. 4 und 5 gezeigten Ausführungsform des erfindungsgemäßen Schneidklemm-Kontaktelements sind zwei Kontaktierungsschlitze 3' vorgesehen, so daß sich entsprechend drei Kontaktschenkel 2c, 2d, 2e ergeben, die an ihrem einen Ende einstückig miteinander verbunden sind. Die Kontaktierungsschlitze 3' und die Kontaktflächen 3a', 3b', 3c', 3d' sind entsprechend der ersten Ausführungsform gemäß den Fig. 1 bis 3 ausgeführt, wobei jeweils die Kontaktflächen einen Winkel oi. mit der Kontaktschenkelebene, d.h. der Ebene, in der alle drei Kontaktschenkel 2c, 2d, 2e liegen, einschließen. Anstelle gleicher Winkel für die Schrägstellung der beiden Kontaktierungsschlitze 3' können auch unterschiedliche Winkel vorgesehen sein. Im dargestellten Beispiel betragen beide Winkel oi. = 45°. Die Schrägstellung der Kontaktierungsschlitze 3' ist so orientiert, daß die Kontaktierungsschlitze gegensinnig zueinander schräggestellt sind. Da die beiden Winkel o< in diesem Beispiel gleich sind, ist dasFIG. 3 shows how a connected wire 10 is contacted in the insulation displacement contact element 1 according to FIGS. 1 and 3. When the wire 10 is inserted into the contact slot 3, the insulation 11 is automatically cut off in the area of the contact surfaces 3a and 3b, so that the conductor 12 of the wire 10 comes into direct contact with the contact surfaces 3a, 3b and thus the electrical contact between the insulation displacement contact Contact element 1 and the conductor 12 is made. As illustrated in FIG. 3, the stripped section of the conductor 12 lies flat against the contact surfaces 3a, 3b, so that there is no shear stress on the conductor 12 and no notches occur because the acute-angled edges of the contact legs 2a, 2b, which are caused by the contiguity of the contact surfaces 3a, 3b with the respective surfaces 7a, 7b are formed, cannot penetrate into the conductor 12. The wire 10 produces a twist of the contact legs 2a, 2b against each other, so that it is held permanently and securely contacted by this torsional tension. In the embodiment of the insulation displacement contact element according to the invention shown in FIGS. 4 and 5, two contacting slots 3 'are provided, so that accordingly three contact legs 2c, 2d, 2e result, which are integrally connected to one another at one end. The contacting slots 3 'and the contact surfaces 3a ' , 3b ', 3c ' , 3d 'are designed in accordance with the first embodiment according to FIGS. 1 to 3, the contact surfaces each having an angle oi. with the contact leg level, ie the level in which all three contact legs 2c, 2d, 2e lie. Instead of the same angle for the inclination of the two contacting slots 3 ', different angles can also be provided. In the example shown, both angles are oi. = 45 °. The inclination of the contacting slots 3 'is oriented such that the contacting slots are inclined in opposite directions to one another. Since the two angles o <are the same in this example, this is
Schneidklemm-Kontaktelement achsensymmetrisch. Fig. 5 zeigt, daß die beiden angeschlossenen Adern 10 in analoger Weise zur Situation bei der ersten Ausführungsform des Schneidklemm-Kontaktelements (vgl. Fig. 3) derart durch eine Torsionsspannung festgehalten werden, daß die abisolierten Bereiche der Adern 10, die Leiter 12, flächig mit den Kontaktflächen 3a', 3b', 3c', 3d' kontaktiert sind.IDC contact element axisymmetric. 5 shows that the two connected wires 10 are held in a manner analogous to the situation in the first embodiment of the insulation displacement contact element (cf. FIG. 3) by means of a torsional stress such that the stripped areas of the wires 10, the conductors 12, are in flat contact with the contact surfaces 3a ', 3b', 3c ', 3d'.
Die in Fig. 6 gezeigte dritte Ausführungsform des Schneidklemm-Kontaktelements weist eine gegenüber der minimalen stanztechnisch realisierbaren Kontaktschlitzweite eine weiter verringerte Kontaktschlitzweite d auf. Gegenüber der zuvor beschriebenen ersten Ausführungsform gemäß den Fig. 1 bis 3 sind die Kontaktschenkel 2a, 2b in der Kontaktschenkelebene in einem Schritt während des Stanzvorganges aufeinander zugeschoben (siehe Pfeilrichtung) und durch diese plastische Verformung wird eine Kontaktschlitzweite d im Bereich von etwa 0 mm bis 0.3 mm erzielt, d.h. gegenüber der stanztechnisch erreichbaren Kontaktschlitzweite wird bei dieser Ausführungsform eine beliebige Verringerung des Abstands zwischen den beiden Kontaktflächen 3a, 3b bis hin zu ihrer Anlage erzielt. Wie aus Fig. 6 ersichtlich, bleibt auch bei dieser Ausführungsforrn die Schrägstellung der Kontaktflächen 3a, 3b bezüglich der Kontaktschenkelebenen erhalten, wobei die beiden Kontaktschenkel 2a, 2b in einer gemeinsamen Ebene liegen.The third embodiment of the insulation displacement contact element shown in FIG. 6 has a contact slot width d that is further reduced compared to the minimum contact slot width that can be achieved by stamping technology. Compared to the previously described first embodiment according to FIGS. 1 to 3, the contact legs 2a, 2b are pushed towards one another in the contact leg plane in one step during the stamping process (see arrow direction) and this plastic deformation results in a contact slot width d in the range from approximately 0 mm to 0.3 mm achieved, ie compared to the contact slot width achievable by stamping technology, any reduction in the distance between the two contact surfaces 3a, 3b up to their contact is achieved in this embodiment. As can be seen from FIG. 6, the inclination of the contact surfaces 3a, 3b with respect to the contact leg planes is also retained in this embodiment, the two contact legs 2a, 2b lying in a common plane.
Eine vierte Ausführungsform des Schneidklemm-Kontaktelements ist in Fig. 7a während eines Fertigungsschritts und in Fig. 7b in ihrem Endzustand dargestellt. Ausgehend von einem Schneidklemm-Kontaktelement gemäß Fig. 6 mit zur Anlage gebrachten Kontaktflächen 3a, 3b, d.h. mit einer Kontaktschlitzweite von d = 0 mm, werden die Kontaktschenkel 2a, 2b in der gemeinsamen Anlageebene der Kontaktflächen 3a, 3b gegeneinander quer zur Kontaktschenkelebene verschoben (vgl. Pfeile in Fig. 7a), so daß sich nach dieser kurzzeitigen Verschiebung der Kontaktschenkel 2a, 2b gegeneinander ein Endzustand gemäß Fig. 7b einstellt, bei dem die beiden Kontaktschenkel 2a, 2b in einer gemeinsamen Ebene liegen und die Kontaktflächen 3a, 3b aufeinander liegen. Durch das kurzzeitige Verschieben gemäß Fig. 7a ist dieser vierten Ausführungsform desA fourth embodiment of the insulation displacement contact element is shown in FIG. 7a during a manufacturing step and in FIG. 7b in its final state. Starting from a insulation displacement contact element according to FIG. 6 with contact surfaces 3a, 3b, i.e. with a contact slot width of d = 0 mm, the contact legs 2a, 2b are displaced in the common contact plane of the contact surfaces 3a, 3b against one another transversely to the contact leg plane (cf. arrows in FIG. 7a), so that after this brief displacement of the contact legs 2a, 2b against each other sets a final state according to FIG. 7b, in which the two contact legs 2a, 2b lie in a common plane and the contact surfaces 3a, 3b lie on one another. Due to the brief displacement according to FIG. 7a, this fourth embodiment of the
Schneidklemm-Kontaktelements eine Vorspannung aufgeprägt, so daß die beiden Kontaktflächen 3a, 3b in Richtung der gemeinsamen Ebene der Kontaktschenkel 2a, 2b mit einer Vorspannungskraft aneinander gedrückt werden. Auch besonders dünne Litzen, die keine Torsion in den Kontaktschenkeln 2a, 2b mehr hervorrufen können, wenn sie in denAn insulation displacement contact element impresses a prestress so that the two contact surfaces 3a, 3b are pressed against one another with a prestressing force in the direction of the common plane of the contact legs 2a, 2b. Also particularly thin strands that can no longer cause torsion in the contact legs 2a, 2b when they are in the
Kontaktierungsschlitz 3 geschoben sind, werden aufgrund der Vorspannung von den Kontaktflächen 3a, 3b sicher kontaktiert und dauerhaft gehalten. Contacting slot 3 are pushed, are reliably contacted by the contact surfaces 3a, 3b and permanently held due to the bias.
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO95-01752A RO115676B1 (en) | 1993-07-12 | 1994-07-11 | Contact element with switching off clip |
| DE59401670T DE59401670D1 (en) | 1993-07-12 | 1994-07-11 | CUTTING CLAMP CONTACT ELEMENT |
| SK1300-95A SK280691B6 (en) | 1993-07-12 | 1994-07-11 | Insulation displacement contact element |
| PL94310985A PL174764B1 (en) | 1993-07-12 | 1994-07-11 | Cutting connector clamp |
| EP94924734A EP0708993B1 (en) | 1993-07-12 | 1994-07-11 | Insulation displacement contact element |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4323286.8 | 1993-07-12 | ||
| DE4323286A DE4323286C2 (en) | 1993-07-12 | 1993-07-12 | Insulation displacement contact element and method for producing an insulation displacement contact element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1995002905A1 true WO1995002905A1 (en) | 1995-01-26 |
Family
ID=6492600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1994/002259 Ceased WO1995002905A1 (en) | 1993-07-12 | 1994-07-11 | Insulation displacement contact element |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0708993B1 (en) |
| AT (1) | ATE148271T1 (en) |
| CZ (1) | CZ282282B6 (en) |
| DE (2) | DE4323286C2 (en) |
| HU (1) | HUT73365A (en) |
| PL (1) | PL174764B1 (en) |
| RO (1) | RO115676B1 (en) |
| SK (1) | SK280691B6 (en) |
| TR (1) | TR28958A (en) |
| WO (1) | WO1995002905A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4029384A (en) * | 1975-01-20 | 1977-06-14 | Illinois Tool Works Inc. | Grounding clip |
| WO1991008599A1 (en) * | 1989-11-30 | 1991-06-13 | Siemens Aktiengesellschaft | Gripping/cutting device for use in connecting individual insulated wires |
| EP0459144A1 (en) * | 1990-06-01 | 1991-12-04 | KRONE Aktiengesellschaft | Cutting terminal contact |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1990398U (en) * | 1968-08-01 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Clamping device | |
| US3499840A (en) * | 1969-01-02 | 1970-03-10 | Mobil Oil Corp | Chlorine derivatives of m-diphenoxybenzene and process of preparation thereof |
| DE7030836U (en) * | 1970-08-17 | 1977-08-11 | Siemens Ag | CLAMPING ELEMENT FOR SOLDER-FREE CONNECTION OF INSULATED ELECTRICAL CONDUCTORS. |
| US4153324A (en) * | 1978-03-08 | 1979-05-08 | Microdot, Inc. | Self-stripping electrical terminal |
| DD219627A1 (en) * | 1983-11-22 | 1985-03-06 | Koelleda Funkwerk | ONE-PIECE TERMINAL WITH ONE OR MORE CONTACTS |
| DE8608363U1 (en) * | 1986-03-26 | 1987-08-27 | Siemens AG, 1000 Berlin und 8000 München | Insulation clamp for connecting insulated electrical conductors |
| DE8804388U1 (en) * | 1988-03-31 | 1988-08-11 | Siemens AG, 1000 Berlin und 8000 München | Insulation clamp, for connecting an electrical jumper wire |
| DE4126068C1 (en) * | 1991-08-02 | 1992-12-03 | Krone Ag, 1000 Berlin, De |
-
1993
- 1993-07-12 DE DE4323286A patent/DE4323286C2/en not_active Expired - Fee Related
-
1994
- 1994-07-11 RO RO95-01752A patent/RO115676B1/en unknown
- 1994-07-11 CZ CZ952535A patent/CZ282282B6/en not_active IP Right Cessation
- 1994-07-11 WO PCT/EP1994/002259 patent/WO1995002905A1/en not_active Ceased
- 1994-07-11 AT AT94924734T patent/ATE148271T1/en not_active IP Right Cessation
- 1994-07-11 PL PL94310985A patent/PL174764B1/en not_active IP Right Cessation
- 1994-07-11 SK SK1300-95A patent/SK280691B6/en unknown
- 1994-07-11 EP EP94924734A patent/EP0708993B1/en not_active Expired - Lifetime
- 1994-07-11 HU HU9502836A patent/HUT73365A/en unknown
- 1994-07-11 DE DE59401670T patent/DE59401670D1/en not_active Expired - Fee Related
- 1994-07-12 TR TR00691/94A patent/TR28958A/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4029384A (en) * | 1975-01-20 | 1977-06-14 | Illinois Tool Works Inc. | Grounding clip |
| WO1991008599A1 (en) * | 1989-11-30 | 1991-06-13 | Siemens Aktiengesellschaft | Gripping/cutting device for use in connecting individual insulated wires |
| EP0459144A1 (en) * | 1990-06-01 | 1991-12-04 | KRONE Aktiengesellschaft | Cutting terminal contact |
Also Published As
| Publication number | Publication date |
|---|---|
| SK130095A3 (en) | 1996-04-03 |
| DE59401670D1 (en) | 1997-03-06 |
| PL310985A1 (en) | 1996-01-22 |
| TR28958A (en) | 1997-07-21 |
| ATE148271T1 (en) | 1997-02-15 |
| RO115676B1 (en) | 2000-04-28 |
| EP0708993B1 (en) | 1997-01-22 |
| CZ282282B6 (en) | 1997-06-11 |
| PL174764B1 (en) | 1998-09-30 |
| EP0708993A1 (en) | 1996-05-01 |
| CZ253595A3 (en) | 1996-01-17 |
| DE4323286A1 (en) | 1995-01-19 |
| HUT73365A (en) | 1996-07-29 |
| SK280691B6 (en) | 2000-06-12 |
| HU9502836D0 (en) | 1995-11-28 |
| DE4323286C2 (en) | 1997-07-03 |
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