EP0708993A1 - Schneidklemm-kontaktelement - Google Patents
Schneidklemm-kontaktelementInfo
- Publication number
- EP0708993A1 EP0708993A1 EP94924734A EP94924734A EP0708993A1 EP 0708993 A1 EP0708993 A1 EP 0708993A1 EP 94924734 A EP94924734 A EP 94924734A EP 94924734 A EP94924734 A EP 94924734A EP 0708993 A1 EP0708993 A1 EP 0708993A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- insulation displacement
- legs
- contact element
- another
- 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.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 52
- 238000009413 insulation Methods 0.000 title claims abstract description 50
- 239000007769 metal material Substances 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 abstract description 33
- 238000005516 engineering process Methods 0.000 description 6
- 238000007373 indentation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000036316 preload Effects 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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 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)
- Breakers (AREA)
- Contacts (AREA)
- Multi-Conductor Connections (AREA)
- Wire Bonding (AREA)
- Scissors And Nippers (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Description
Claims
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 true EP0708993A1 (de) | 1996-05-01 |
EP0708993B1 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 (de) |
AT (1) | ATE148271T1 (de) |
CZ (1) | CZ282282B6 (de) |
DE (2) | DE4323286C2 (de) |
HU (1) | HUT73365A (de) |
PL (1) | PL174764B1 (de) |
RO (1) | RO115676B1 (de) |
SK (1) | SK280691B6 (de) |
TR (1) | TR28958A (de) |
WO (1) | WO1995002905A1 (de) |
Family Cites Families (11)
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 (de) * | 1991-08-02 | 1992-12-03 | Krone Ag, 1000 Berlin, De |
-
1993
- 1993-07-12 DE DE4323286A patent/DE4323286C2/de not_active Expired - Fee Related
-
1994
- 1994-07-11 DE DE59401670T patent/DE59401670D1/de not_active Expired - Fee Related
- 1994-07-11 CZ CZ952535A patent/CZ282282B6/cs not_active IP Right Cessation
- 1994-07-11 HU HU9502836A patent/HUT73365A/hu unknown
- 1994-07-11 AT AT94924734T patent/ATE148271T1/de not_active IP Right Cessation
- 1994-07-11 EP EP94924734A patent/EP0708993B1/de not_active Expired - Lifetime
- 1994-07-11 PL PL94310985A patent/PL174764B1/pl not_active IP Right Cessation
- 1994-07-11 RO RO95-01752A patent/RO115676B1/ro unknown
- 1994-07-11 WO PCT/EP1994/002259 patent/WO1995002905A1/de active IP Right Grant
- 1994-07-11 SK SK1300-95A patent/SK280691B6/sk unknown
- 1994-07-12 TR TR00691/94A patent/TR28958A/xx unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9502905A1 * |
Also Published As
Publication number | Publication date |
---|---|
SK280691B6 (sk) | 2000-06-12 |
TR28958A (tr) | 1997-07-21 |
HU9502836D0 (en) | 1995-11-28 |
PL310985A1 (en) | 1996-01-22 |
DE4323286A1 (de) | 1995-01-19 |
CZ282282B6 (cs) | 1997-06-11 |
HUT73365A (en) | 1996-07-29 |
DE4323286C2 (de) | 1997-07-03 |
DE59401670D1 (de) | 1997-03-06 |
SK130095A3 (en) | 1996-04-03 |
PL174764B1 (pl) | 1998-09-30 |
EP0708993B1 (de) | 1997-01-22 |
ATE148271T1 (de) | 1997-02-15 |
RO115676B1 (ro) | 2000-04-28 |
CZ253595A3 (en) | 1996-01-17 |
WO1995002905A1 (de) | 1995-01-26 |
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