EP2144331A1 - Contact à déplacement d'isolation et dispositif de connexion - Google Patents

Contact à déplacement d'isolation et dispositif de connexion Download PDF

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Publication number
EP2144331A1
EP2144331A1 EP09405111A EP09405111A EP2144331A1 EP 2144331 A1 EP2144331 A1 EP 2144331A1 EP 09405111 A EP09405111 A EP 09405111A EP 09405111 A EP09405111 A EP 09405111A EP 2144331 A1 EP2144331 A1 EP 2144331A1
Authority
EP
European Patent Office
Prior art keywords
fork
insulation displacement
contact
displacement contact
blades
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
Application number
EP09405111A
Other languages
German (de)
English (en)
Other versions
EP2144331B1 (fr
Inventor
Tensing Gyagang
Reimar Grosskopf
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.)
Reichle and De Massari AG
Original Assignee
Reichle and De Massari 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 Reichle and De Massari AG filed Critical Reichle and De Massari AG
Publication of EP2144331A1 publication Critical patent/EP2144331A1/fr
Application granted granted Critical
Publication of EP2144331B1 publication Critical patent/EP2144331B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/2445—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
    • H01R4/2462—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 invention relates to the electrical contacting of insulated conductors by means of an insulation displacement contact. It relates in particular to an insulation displacement contact and a contacting device with an insulation displacement contact.
  • electrically conductive terminals are used, with which the conductor previously to be stripped in a contacting region is clamped and thereby contacted.
  • insulation-pervading technologies are known. Such are electrically conductive contact elements, which are set up so that they pierce the electrical insulation at the contact location and contact the actual conductor without prior stripping.
  • IDC Insulation Displacement Connector
  • insulation displacement contacts are self-centering and have largely proven themselves.
  • the known insulation displacement contacts as for example in the introductory paragraph of U.S. Patent 6,866,536 However, as a rule, they are suitable only for use with a precisely predetermined conductor diameter and a small area around this conductor diameter. They also require considerable installation height and, in most configurations, can only contact one conductor at a time. In addition, they are generally suitable only for the one-time wiring of a conductor or at least very few Bescharisvor réelle, since they can deform considerably plastically when inserting the cable core between the blades. The extent of the plastic deformation is often dependent on how deep the cable core and thus the conductor between the blades of the IDC is inserted, so that the already low suitability for multiple wiring is also an unpredictable size.
  • an electrical terminal with an insulation displacement contact is known, which is suitable for the simultaneous contacting of two conductors.
  • the insulation displacement contact as a pliers (or bucket shape) curved insulation displacement contact (bent punched part) is formed, wherein the depth of the pliers formed thereby (corresponding to the length of the bent insulation displacement contact) is sufficiently large to allow the inclusion of two conductors.
  • This solution has the advantage that, in contrast to conventional insulation displacement contacts, the spring force exerted by the cutting clamp on the conductor does not increase in function of the insertion depth; the first allows the introduction of two equally thick (in cross-section) conductors simultaneously.
  • the EP 0 344 526 shows a terminal block for a cable connection unit with a clamp, which is inserted into an insulating body.
  • the clip has, on the one hand, a connection contact and, on the other hand, a separating or clamping device.
  • a connecting piece between the terminal contact and the V-shaped clamping device connects proximally to the terminal contact and is in two parts.
  • the embodiment is not suitable for applying an elastic spring force by the clamping device, so that when introducing a conductor plastic deformation will take place.
  • the brackets also require a considerable installation height. In addition, they are also due to plastic deformation generally suitable only for the one-time wiring of a conductor or at least very few Bescharisvor sautician.
  • An insulation displacement contact according to the invention is characterized essentially by the fact that, as a whole, together with a cutting section with two mutually facing contact blades, it has two forked parts, both of which contribute to a clamping force with which the two contact blades are pressed against each other (during the wiring) as soon as possible a conductor is pushed between the contact blades and these are thereby pressed apart.
  • a wiring direction i.
  • the fork parts are angled towards the cutting area, i. they do not run in a common plane with the cutting area.
  • the fork parts form an angle to the cutting part does not mean that they necessarily have to be flat in certain areas. Also, it is not excluded that at least one of the lots angled 180 ° to the fork and thus parallel to this. Rather, here means 'form an angle' only that the respective fork and the cutting section does not extend in a common plane and preferably not parallel to each other in the same direction (ie, the respective fork is not angled back in a parallel plane and in the same direction ) As described in more detail below are preferably (in different constellations), the two forked parts at least 90 ° angled so that the installation height of the dimension of the cutting section corresponds and this at least does not significantly exceed.
  • the two fork parts each have the function of an elastic spring, and they are preferably arranged so that they are deflected during the intended insertion of the conductor only through the cutting section and, for example. Not even act as additional terminals; this would impair the spring action and also make an ideal spring shape impossible, which will be discussed in more detail below.
  • the fork parts are designed in such a way that they both act as springs clamping from one side.
  • Each of the two fork sections individually constitutes an independent, elastic spring. This means that when the contact blades move apart relative to one another by a thickness of a conductor to be contacted both in the region of the proximal bending line (ie the line at which the cutting section merges into the first fork section ) as well as in the region of the distal bend line (ie the line at which the cutting section merges into the second fork section) the first and the second fork are substantially elastically and not plastically deformed or only to a very small extent compared to the elastic deformation.
  • the contact blades do not open (or at most slightly) V-shaped with increasing opening angle as a function of the insertion path; on the contrary: Preferably, the contact blades remain approximately parallel to each other during insertion (or possibly even take a slightly open to the distal side configuration when positioning the conductor in a distal position on).
  • the deflection of the fork spring is therefore practically only dependent on the diameter of the conductor and not on the position of the conductor between the contact blades.
  • the spring constants of the two springs formed by the first and second yokes are of the same order of magnitude (assuming the force required there for deflection in the region of the respective bend line), ie the spring constants differ by at most one Factor 3 (ie 1/3 F 1 ⁇ F 2 ⁇ 3 F 1 ) , preferably at most a factor of 2, and most preferably they are substantially the same, ie they differ by at most a factor of 1.5.
  • the two spring constants are practically exactly the same, ie they differ by a maximum of about 20%.
  • the fork bars of the first fork are approximately the same length as the fork bars of the second fork.
  • the lengths are at most 50%, more preferably at most 30% different.
  • the distance m or n is defined as follows: In a development of the insulation displacement contact, those straight lines are cut with the inner or outer contour line, which have an angle of 45 ° to the tangent at the inner or outer vertex. The distance of the respective point of intersection to the perpendicular to said tangent corresponds to the value m or n , for which the above conditions apply.
  • the procedure according to the invention has the first, immediate advantage that, given a sufficiently long cutting section, two conductors can be connected simultaneously, i. a conductor clamped in one position does not prevent a sufficient clamping force from being applied to a second conductor inserted at another position between the contact blades. This may even apply if the two conductors do not have the exact same diameter.
  • the second advantage of the method according to the invention results in the advantage that conductors of different diameters can be connected, namely reversibly.
  • a first thicker conductor and, after its removal, a second, less thick conductor can be reliably connected - because virtually no plastic deformation occurs due to the procedure according to the invention, provided that only conductors with a diameter in an approved diameter range are connected.
  • the fork parts are preferably designed so that a conductor to be inserted over a whole length of the cutting section is reversibly clamped, ie that the clamping force over the entire length is sufficient but not too large, deformed by inserting a conductor of an intended size of the insulation displacement contact substantially elastic becomes.
  • the design with the angled fork parts allows the use of Kunststoffssentungen (eg, plugs, adapters, jacks, etc.) of a total of low overall height. This is particularly the case when the fork parts are angled at least approximately 90 °: then the entire height of the height of the cutting section can correspond. Overall, there is an optimal relationship between height and elasticity: despite low overall height, the blades can be moved in a relatively very large area under elastic deformation of the insulation displacement contact relative to each other.
  • the geometry of contact elements designed according to the invention also makes it possible for the insulation displacement contact as a whole to be provided with two insulation displacement openings which are open in opposite directions or configured as a double contact element with two insulation displacement contact parts formed at different locations.
  • the insulation displacement contact is designed so that a continuous conductor can be connected without it would have to be bent or even circumcised.
  • a conductor to be connected preferably should be contacted by the insulation displacement contact essentially (by exerting a force) only by the contact blades, whereby the fork parts can be designed to be optimized for their function as elastic springs.
  • one of the two fork parts is angled by more than 90 °, while the other is angled at approximately 90 °.
  • the first fork section angled by more than 90 ° corresponds to the first fork section (ie the "upper" fork section) adjoining the proximal end of the cutting section.
  • the fork webs of the two forked parts are both "below" the conductor.
  • first and second forked parts are angled towards the cutting section so that they lie on the same side of the cutting section relative to a cutting section plane.
  • This configuration allows the first fork section to be angled at just over 90 ° without additional space - for example, around 100-140 °. This brings a particularly advantageous stress-free distribution of forces and allows the use of inherently stiff blades.
  • the configuration is also advantageous in terms of dimensioning, since relatively large first and second forks can be used, wherein the insulation displacement contact as a whole with increasing fork size only in one direction is greater.
  • the first and second forked portions lie on different sides of the cutting-board plane.
  • This variant is particularly advantageous if the first fork part is angled at 180 ° or at other comparatively large angles, for example between 150 ° and 190 °.
  • the insulation displacement contact as a whole then has the shape of a bracket with, for example, approximately vertically angled (second) fork, wherein the bracket is formed by the first fork and the cutting section.
  • the cable core can be pressed between the blades by means of a cable cover which can be pushed over the bracket and approaches the blades close to the blades; So there are no elements required for the wiring, which would have to intervene in the small gap between the fork legs, ie between the blades comes only the head to lie.
  • the cutting section is preferably formed as a (third) spring element. This has the additional advantage that potential energy can also be stored in the cutting section and, in this way, additional plastic deformation of the insulation displacement contact is counteracted.
  • the insulation displacement contact is metallic and one-piece.
  • the insulation displacement contact according to the invention is produced as a stamped, bent component (sheet metal).
  • sheet metal The deflection of the contact blades and the corresponding force acting against the deflection spring force then act in the plane of the sheet, and not perpendicular thereto.
  • This has, among other things, the advantage that the significant spring constant can be chosen almost arbitrarily by the width of the fork leg sections and design of the fork bridge area, i. the spring constant is not only dependent on the sheet thickness but a free parameter.
  • proven and comparatively cost-effective production methods can be used.
  • the cutting section as a whole is substantially flat, i. at least the cutting edges and, for example, the entire cutting section run in a plane and without bends.
  • the insulation displacement contact can have - in particular in embodiments for the wiring of comparatively thick conductors - in the proximal direction projecting contact tips with which the insulation of thicker cable cores is pierced when wiring.
  • the contact blades may be stamped in the lead-in area to increase the cutting action.
  • a contacting device of the inventive type has a plurality of inventive insulation displacement contacts, which are arranged in and / or on a housing.
  • the insulation displacement contacts serve either directly contacting another element (cable core of a branched line or contact a device, etc.) by also forming a socket or plug contact (with socket or plug contact are also called corresponding distributor strip contacts), or they are contacted or contacted in the housing by a female or male contact; the housing does not have to be one-piece and can provide that an electrical connection between insulation displacement contacts and cable cores on the one hand and / or between insulation displacement contacts and socket or plug contacts on the other hand by the assembly of housing parts is made.
  • FIGS. 1 or 13/14 insulation displacement contacts shown in an embodiment in a flat shape, as they are, for example, as semi-finished products before bending into the desired 3D shape; in the Figures 2 and 15 are also each the bending lines (in reality, there are areas in an environment of these lines), which define the transition between the cutting part on the one hand and the fork parts on the other.
  • the in Figures 1-4 illustrated insulation displacement contact 1 has a cutting section 3 with two blades 3.1, 3.2. In a region of the blades, mutually projecting cutting edges 3.3, 3.4 are formed for cutting an insulation 7.2 of a conductor 7.1.
  • blades are the elements forming the cutting part along their entire length, that is to say not only in the region in which the cutting edges are present.
  • a first fork 4 with two fork legs 4.1, 4.2 closes on the proximal side (in those figures, such as FIGS. 1, 3 and 4 show a 3D view, the proximal side of the cutting section corresponds to the top, the distal Side of the bottom; the cable cores are inserted as "from above") to the cutting section 2.
  • the first fork portion formed by the first fork 4 is angled at an angle of more than 90 ° - here about 115 ° - relative to the cutting section.
  • An end portion 4.4 of the first fork portion is slightly bent for reasons of space of a fork main part.
  • the second fork section formed by the second fork 5 has an angle of approximately 90 ° to the cutting section. This arrangement allows the wiring of a continuous, not bent conductor, which will be described below with reference to FIG. 10 even more clearly illustrated.
  • the second fork part also includes a female contact part 6, which is formed on suitable, adapted to the geometric situation in the contacting device manner, so that a plug contact of a plug can make a reliable electrical contact.
  • each of the two blades 3.1, 3.2 each have a contact tip 3.5, 3.6.
  • these contact tips when wiring thicker cable wires 7 pierce the insulation and penetrate into their inner. That brings with it the positive effect that the radial (With respect to the cable core) force to be exerted by the insulation displacement contact and thus the maximum deflection of the blades against each other during the Bescharisvorgang can be: it is quasi at most the inner part of the insulation to be pierced by means of a radial cutting movement. This measure therefore causes the range of possible, reversibly connectable thicknesses to be increased.
  • FIG. 5 illustrated variant of the insulation displacement contact is different from the insulation displacement contact according to FIG. 1 in that the cutters are stepped farther apart, ie in an upper proximal part, than in a lower part. This further extends the range of manageable cable thicknesses: thin cables are pushed all the way down, while thicker cables stay in the upper area.
  • the variant according to FIG. 6 still has the feature that in addition a Ablfitklinge 8 for cutting the cable core 7 is present; this variant is advantageous in connection with the use of non-continuous cables.
  • the socket contact part 6 in other embodiments, it may also be a plug contact part
  • the socket contact part 6 may also be present elements for even more functions, for example. Soldering pins, springs, etc.
  • FIG. 7 is shown by the solid line schematically the force exerted on the conductor by the blades force F as a function of the insertion path s of the cable core, of an insulation displacement contact of the in Figures 1-4 is assumed kind. Due to the beveled shape of the blades in the proximal region, the blades are first disengaged steadily, which due to the Hooke's law an analog, for example. Linear increase in force result. Once the ladder is in the area where the cutting edges of the blades are parallel to each other and the insulation is severed at the contact point to the IDC, the force F remains constant, however, as further insertion the two forks are not deformed further.
  • inventive insulation displacement contacts are also optimized by further means that allow the smallest possible space as large as possible elastic spring range of the forks. So are like in FIG. 8 For example, the forks are shown differently from the shape realized in the prior art with a round inner contour line in the region of the vertex and adjoining parallel fork bars of constant diameter. In particular, at least in the region of the vertex, the curvature will preferably not be constant, but decrease as a function of the distance from the vertex.
  • Analogous considerations can also apply to the outer contour line, wherein it is particularly advantageous for the outer contour line if it deviates from a shape which can be approximated by three sides of a rectangle with rounded corners therebetween.
  • FIG. 9 shows further criteria for the inner curl line 21.1 and the outer curvature line 21.2, which correspond to the largest possible optimization of the elastic spring range of the forks in the smallest possible space.
  • m is smaller than this value, for example by at least d / 12 , more preferably by at least d / 8 , so that m ⁇ 3 d / 8.
  • This criterion also means that the maximum distance of the inner contour line from the plane of symmetry is not already taken in the vicinity of the apex, but away from it.
  • a realistic lower limit for the value m is, for example, at d / 12, particularly preferably at least d / 8.
  • n is smaller than p / 2, more preferably n is not larger than 7 p / 16.
  • p / 4 the value p / 4 can be assumed.
  • the planes 41, 42 are replaced by corresponding straight lines 41, 42 which are at an angle of 45 ° to the tangent 43 and 44 at the corresponding vertex, the distance to the intersection then from the vertical 40 on the Tangent 43 or 44 is measured by the vertex; This definition is also valid for not symmetrically designed insulation displacement contacts.
  • FIG. 10 schematically shows a contacting device with a insulation displacement contact 1 of the type described above FIG. 10 It can also be seen that due to the selected angle between the cutting section 3 on the one hand and the fork sections 4, 5 on the other hand, a continuous cable core 7 can be connected.
  • the device has a housing 12.
  • the housing is designed such that plug contacts 13 of a plug 14 can protrude into the housing interior such that the socket contact regions 6 of the insulation displacement contacts 1 can be contacted.
  • the insulation displacement contact 1 according to the FIGS. 11 and 12 is different from the one of FIGS. 1 to 4 in that it is designed, for example, specifically for a multiple socket connector strip as a contacting device.
  • the female contact area 6 more socket contact holes 6.1-6.4 are formed, in each of which a cylindrical plug contact can be inserted here.
  • the slots in the area of the socket contact holes provide the necessary elasticity in the event that the plug contacts are stiff in itself.
  • insulation displacement contacts in FIGS. 10 and 11 be shown, the arrangement may be such that the corresponding socket contact holes 6.1-6.4 of the various insulation displacement contacts form a corresponding plug type a corresponding arrangement.
  • socket contact holes or in addition to these other connection means are conceivable, for example. Lötscher or points, piercing tips, etc.
  • the insulation displacement contact according FIGS. 13-15 is different from the one of Figures 1-4 among other things in that the first and the second fork are angled on different sides of the plane defined by the cutting section. This can, as in FIGS. 13 and 14 is also visible, the second fork portion to be angled by about 180 °, so that the cutting section 3 and the second fork section 5 together form a bracket with two strap spars, between which a cable core has to be inserted with the conductor to be wired. This can be done with the help of a wiring cover, which can be, for example, slipped over the bracket.
  • the shape of the insulation displacement contact according to FIGS. 13-15 is therefore particularly suitable for the design as a comparatively small insulation displacement contact, so for example for the connection of data lines.
  • a contacting device according to the invention can be designed as a plug or socket of a data line, for example as an RJ-45 plug or socket.
  • FIGS. 13 to 15 Another special feature of the insulation displacement contact according FIGS. 13 to 15 is expressed in the recesses 3.8, which are visible in the cutting section. Due to these indentations act the blades 3.1, 3.2 at the same time as spring elements, in addition to the forks. They can therefore contribute to the elasticity of the insulation displacement contact as a whole and also torsional forces which are caused by the Verwinkelung of the two forks 4, 5 relative to each other.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Contacts (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Cable Accessories (AREA)
  • Clamps And Clips (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
EP09405111.7A 2008-07-11 2009-07-08 Contact à déplacement d'isolation et dispositif de connexion Active EP2144331B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01078/08A CH699105A1 (de) 2008-07-11 2008-07-11 Schneidklemmkontakt und Kontaktierungsvorrichtung.

Publications (2)

Publication Number Publication Date
EP2144331A1 true EP2144331A1 (fr) 2010-01-13
EP2144331B1 EP2144331B1 (fr) 2014-04-30

Family

ID=40079671

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09405111.7A Active EP2144331B1 (fr) 2008-07-11 2009-07-08 Contact à déplacement d'isolation et dispositif de connexion

Country Status (8)

Country Link
US (1) US7857655B2 (fr)
EP (1) EP2144331B1 (fr)
JP (1) JP2010021143A (fr)
CN (1) CN101630778A (fr)
AU (1) AU2009202687A1 (fr)
CH (1) CH699105A1 (fr)
ES (1) ES2479416T3 (fr)
SG (1) SG158807A1 (fr)

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DE102012210921A1 (de) * 2012-06-27 2014-01-23 Robert Bosch Gmbh Kontaktelement zum Verbinden mit einer Leiterplatte, Kontaktsystem und Verfahren
DE102012015581A1 (de) * 2012-08-07 2014-02-13 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Steckverbinder
US9343822B2 (en) 2013-03-15 2016-05-17 Leviton Manufacturing Co., Inc. Communications connector system
CA3206145A1 (fr) 2014-04-14 2015-10-22 Leviton Manufacturing Co., Inc. Sortie de communication dotee d'un mecanisme d'obturateur, et dispositif de gestion de fils
US9515437B2 (en) 2014-04-14 2016-12-06 Leviton Manufacturing Co., Inc. Communication outlet with shutter mechanism and wire manager
US9627827B2 (en) 2014-04-14 2017-04-18 Leviton Manufacturing Co., Inc. Communication outlet with shutter mechanism and wire manager
USD752590S1 (en) 2014-06-19 2016-03-29 Leviton Manufacturing Co., Ltd. Communication outlet
US9608379B1 (en) 2015-10-14 2017-03-28 Leviton Manufacturing Co., Inc. Communication connector
US10135207B2 (en) 2016-01-31 2018-11-20 Leviton Manufacturing Co., Inc. High-speed data communications connector
ES2592804B1 (es) * 2016-06-06 2017-09-05 Simon, S.A.U. Conector por desplazamiento del aislante
TWI645627B (zh) * 2017-12-07 2018-12-21 榮益科技股份有限公司 Force symmetrically embedded in the shrapnel assembly

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GB2028012A (en) * 1978-08-04 1980-02-27 Eaton Corp Grounding device
EP0344526A2 (fr) 1988-05-31 1989-12-06 Quante Ag Bloc de jonction pour unité de terminaison de câbles
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AU2009202687A1 (en) 2010-01-28
CN101630778A (zh) 2010-01-20
US7857655B2 (en) 2010-12-28
CH699105A1 (de) 2010-01-15
US20100009567A1 (en) 2010-01-14
EP2144331B1 (fr) 2014-04-30
ES2479416T3 (es) 2014-07-24
SG158807A1 (en) 2010-02-26

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