EP0708993B1 - Schneidklemm-kontaktelement - Google Patents

Schneidklemm-kontaktelement Download PDF

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Publication number
EP0708993B1
EP0708993B1 EP94924734A EP94924734A EP0708993B1 EP 0708993 B1 EP0708993 B1 EP 0708993B1 EP 94924734 A EP94924734 A EP 94924734A EP 94924734 A EP94924734 A EP 94924734A EP 0708993 B1 EP0708993 B1 EP 0708993B1
Authority
EP
European Patent Office
Prior art keywords
contact
insulation displacement
contact element
plane
legs
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
EP94924734A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0708993A1 (de
Inventor
Joachim Rott
Peter A. Neumann
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.)
3M Deutschland GmbH
Original Assignee
Quante GmbH
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 Quante GmbH filed Critical Quante GmbH
Publication of EP0708993A1 publication Critical patent/EP0708993A1/de
Application granted granted Critical
Publication of EP0708993B1 publication Critical patent/EP0708993B1/de
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

Definitions

  • the invention relates to an insulation displacement contact element according to the preamble of claim 1.
  • Such an insulation displacement contact element is known from EP-A-0 459 144.
  • 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.
  • Another insulation displacement contact element which is known from WO 91/08599, has chisel-like bevels on the longitudinal edges of the contact legs, which delimit the clamping slot, which are interrupted by a non-beveled intermediate area.
  • the clamping legs are separated from one another by scissors and interlacing, and the bevels are stamped in before the clamping legs are sheared through.
  • the contact surfaces, which are not punched out, run obliquely to the contact leg plane of the respective contact leg.
  • 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 contact 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.
  • the 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.
  • These insulation displacement contact elements are preferably arranged obliquely so that the insulation displacement contact element forms 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.
  • 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 are punched out of the metallic, electrically conductive material from which the insulation displacement contact element is produced.
  • 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 processes follow the production of the incision with the obliquely oriented contact surfaces.
  • 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 legs are each displaced in the transverse direction to the incision they enclose within the contact leg 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 case, even for very thin connected conductors, there is a flat contact 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 in addition a prestress is 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 one another and transversely to the contact leg plane.
  • the pre-tensioning force means that even very thin connected conductors are permanently and securely contacted, although due to their small diameter they cannot generate any torsional stress in the contact legs.
  • the contact surfaces of two adjacent incisions 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 always running essentially parallel to one another.
  • 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 comprises a bay-shaped entrance 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 region 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 connector Contact element 1 and the conductor 12 is made.
  • the insulation displacement connector 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, since the acute-angled edges of the contact legs 2a, 2b that 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.
  • two contacting slots 3 ' are provided, so that there are accordingly three contact legs 2c, 2d, 2e which are integrally connected to one another at one end.
  • ⁇ 45 °.
  • the inclination of the contacting slots 3 ' is oriented so that the contacting slots are inclined in opposite directions to each other. Since the two angles ⁇ are the same in this example, the insulation displacement contact element is axially symmetrical. 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 in the contact leg plane are pushed towards one another 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 sets against each other an end 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.
  • this fourth embodiment of the insulation displacement contact element is subjected to 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.
  • Particularly thin strands which can no longer cause torsion in the contact limbs 2a, 2b when they are pushed into the contacting slot 3, are reliably contacted by the contact surfaces 3a, 3b and held permanently.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Breakers (AREA)
  • Contacts (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Scissors And Nippers (AREA)
  • Multi-Conductor Connections (AREA)
  • Wire Bonding (AREA)
EP94924734A 1993-07-12 1994-07-11 Schneidklemm-kontaktelement Expired - Lifetime EP0708993B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4323286 1993-07-12
DE4323286A DE4323286C2 (de) 1993-07-12 1993-07-12 Schneidklemm-Kontaktelement und Verfahren zur Herstellung eines Schneidklemm-Kontaktelements
PCT/EP1994/002259 WO1995002905A1 (de) 1993-07-12 1994-07-11 Schneidklemm-kontaktelement

Publications (2)

Publication Number Publication Date
EP0708993A1 EP0708993A1 (de) 1996-05-01
EP0708993B1 true EP0708993B1 (de) 1997-01-22

Family

ID=6492600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94924734A Expired - Lifetime EP0708993B1 (de) 1993-07-12 1994-07-11 Schneidklemm-kontaktelement

Country Status (10)

Country Link
EP (1) EP0708993B1 (tr)
AT (1) ATE148271T1 (tr)
CZ (1) CZ282282B6 (tr)
DE (2) DE4323286C2 (tr)
HU (1) HUT73365A (tr)
PL (1) PL174764B1 (tr)
RO (1) RO115676B1 (tr)
SK (1) SK280691B6 (tr)
TR (1) TR28958A (tr)
WO (1) WO1995002905A1 (tr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1990398U (de) * 1968-08-01 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Klemmvorrichtung
US3499840A (en) * 1969-01-02 1970-03-10 Mobil Oil Corp Chlorine derivatives of m-diphenoxybenzene and process of preparation thereof
DE7030836U (de) * 1970-08-17 1977-08-11 Siemens Ag Klemmentelement zum loetfreien anschluss isolierter elektrischer leiter.
US4029384A (en) * 1975-01-20 1977-06-14 Illinois Tool Works Inc. Grounding clip
US4153324A (en) * 1978-03-08 1979-05-08 Microdot, Inc. Self-stripping electrical terminal
DD219627A1 (de) * 1983-11-22 1985-03-06 Koelleda Funkwerk Einteiliges klemmelement mit einer oder mehreren kontaktstellen
DE8608363U1 (de) * 1986-03-26 1987-08-27 Siemens AG, 1000 Berlin und 8000 München Schneidklemme zum Anschluß von isolierten elektrischen Leitern
DE8804388U1 (de) * 1988-03-31 1988-08-11 Siemens AG, 1000 Berlin und 8000 München Schneidklemme, zum Anschließen eines elektrischen Schaltdrahtes
WO1991008599A1 (de) * 1989-11-30 1991-06-13 Siemens Aktiengesellschaft Schneidklemme zum anschliessen von isolierten schaltdrähten
DE4018164C2 (de) * 1990-06-01 1994-02-10 Krone Ag Schneidklemm-Kontakt
DE4126068C1 (tr) * 1991-08-02 1992-12-03 Krone Ag, 1000 Berlin, De

Also Published As

Publication number Publication date
SK130095A3 (en) 1996-04-03
CZ253595A3 (en) 1996-01-17
DE59401670D1 (de) 1997-03-06
HU9502836D0 (en) 1995-11-28
RO115676B1 (ro) 2000-04-28
PL174764B1 (pl) 1998-09-30
WO1995002905A1 (de) 1995-01-26
EP0708993A1 (de) 1996-05-01
PL310985A1 (en) 1996-01-22
HUT73365A (en) 1996-07-29
ATE148271T1 (de) 1997-02-15
DE4323286A1 (de) 1995-01-19
DE4323286C2 (de) 1997-07-03
CZ282282B6 (cs) 1997-06-11
SK280691B6 (sk) 2000-06-12
TR28958A (tr) 1997-07-21

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