EP0951094B1 - Dispositif de connexion autodénudant - Google Patents

Dispositif de connexion autodénudant Download PDF

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Publication number
EP0951094B1
EP0951094B1 EP99420087A EP99420087A EP0951094B1 EP 0951094 B1 EP0951094 B1 EP 0951094B1 EP 99420087 A EP99420087 A EP 99420087A EP 99420087 A EP99420087 A EP 99420087A EP 0951094 B1 EP0951094 B1 EP 0951094B1
Authority
EP
European Patent Office
Prior art keywords
cable
stripping
spring
slot
conductive part
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
EP99420087A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0951094A1 (fr
Inventor
Sylvain Barrat
Bernard Bechaz
Philippe France
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.)
ABB France SAS
Original Assignee
Entrelec SAS
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 Entrelec SAS filed Critical Entrelec SAS
Publication of EP0951094A1 publication Critical patent/EP0951094A1/fr
Application granted granted Critical
Publication of EP0951094B1 publication Critical patent/EP0951094B1/fr
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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting

Definitions

  • the present invention relates to a self-stripping connection device for an electric cable consisting of a conductive core and an insulating sheath.
  • Such a device makes it possible to connect an electric cable to a conductive piece without the need to first strip one end of the electrical cable.
  • the self-stripping connection device performs local stripping of the cable, for example by cutting the insulating sheath surrounding the conductive core, before making contact electric between the conductive core thus locally stripped and the part conductive.
  • a device having the characteristics of the preamble of claim 1 is described in document DE-A- 38 18 548.
  • European patent EP 0 247 360 discloses a device for self-stripping connection comprising a conductive connection piece which has a slot intended to receive the cable to be connected and which is mounted in an insulating housing having at least one opening allowing the introduction of the cable to be connected, as well as means allowing to strip the electric cable locally.
  • the conductive piece has a core stripping and retaining slot of the cable.
  • This slot which is rectilinear, is longitudinally formed at the along a profile-shaped part which is obtained for example from of a flat blank, by stamping causing its cutting, folding and possibly localized thinning.
  • the profiled part of the piece conductive has a hollow polygonal cross section which corresponds to a U whose free ends have been obliquely and also folded towards each other.
  • the profiled part thus obtained has two folds end corresponding to the free ends obliquely and also folded up mentioned above. These two folds line the slit they delimit.
  • a stripped mouth of the conductive part is formed at one end of the slot. It is obtained by oblique cutting symmetrical pleats bordering the slot at one of their ends. This oblique cut to obtain a flared mouth.
  • the folding subsequent folds, relative to the walls which carry them creates an edge upper sufficient to start the sheath of the cables pushed in this mouth.
  • a special tool with a tip adapted to the shape of the conductive part is provided for introducing an electric cable in the conductive part.
  • connection device allows to realize, without stripping good electrical contact between the conductive part and the core conductive of a cable.
  • the same conductive part can receive cables of different diameters within a determined diameter range.
  • connection device requires the use of a specific tool. Without this tool it is very difficult to make a connection.
  • connection device The conductive part of this connection device must be made of special materials to ensure both good stripping and good electrical contact and as it appears from the brief description above, the realization of this conductive part is quite complex. This makes this connection device cost-effective quite high.
  • the means for stripping locally the electric cable are made on a separate part of the conductive part and face the slot of the latter, and means movement are provided to move the cable from a position in which the bare cable is introduced into the device to a connection position in which the cable is located in the slot of the conductive part and in which the core of the cable is in electrical contact with the conductive part, the cable passing through the means making it possible to strip it locally during this movement.
  • This device can for example take place in a case insulation which has an opening allowing the introduction of the cable to Connect.
  • the conductive part of connection is mounted in an insulating box having at least one opening allowing the introduction of the cable to be connected, and the means of displacement comprise an elastic blade provided with means electric cable drive, the cable drive means facing the slot of the conductive part in the rest position of the elastic blade and facing the opening for introducing the cable into the insulating housing in the preloaded position of the elastic blade.
  • the means of displacement comprise an elastic blade provided with means electric cable drive, the cable drive means facing the slot of the conductive part in the rest position of the elastic blade and facing the opening for introducing the cable into the insulating housing in the preloaded position of the elastic blade.
  • an opening is advantageously provided in the insulating housing so as to allow the passage of a tool, such as a screwdriver blade, to prestress the blade elastic.
  • the means preferably have a window in which can pass this cable. In some configurations, it may be sufficient to have a fork between the teeth of which the cable is placed.
  • the device according to the invention has for example a part made in an elastic blade folded so that its two ends are substantially parallel to each other, one end being provided with two stripping lips and the other end being provided with cable drive means, such as example a window.
  • the elastic blade on the side of the stripping lips, then rests preferably on the conductive part whose shape it follows, the lips stripping being inclined relative to the elastic blade so that the stripping part of these lips is well in front of the slot of the conductive part.
  • the cable drive means preferably include lugs guide substantially resuming the shape of the stripping lips.
  • the slot intended to receive the cable to be connected advantageously has an opening in the shape of a V and is extended, on the side of the point of the V, by two edges substantially parallel.
  • the present invention also relates to a terminal block of connection comprising an insulating box and a conductive part intended to be electrically connected to at least one electrical cable, terminal block which is provided with at least one self-stripping connection device as described above.
  • Figure 1 shows a terminal block fitted with two connection.
  • This terminal block includes an insulating housing 2, two springs 4, as well than a conductive part 6.
  • the insulating housing 2 is a piece of synthetic material obtained for example by molding.
  • the shape of its base is such that it can be fixed on standard fixing rails provided for this purpose.
  • a housing 8 is provided for each spring 4 and each end of the conductive part 6.
  • the upper face of the housing 2 has at each housing each time an opening 10 intended to receive a cable to be connected and an opening 12 intended to receive the blade of a screwdriver.
  • the conductive part 6 is shown in perspective on the Figure 1 and in top view in Figure 3. This part 6 can receive two electrical cables, one at each end.
  • This piece conductive 6 is made from a metal blade, for example by copper.
  • each slot 14 is made at each end of the blade.
  • Each slot 14 is formed on the axis longitudinal median of the blade.
  • the slot 14 has a V-shaped zone 16, the point of the V lying inside of the blade.
  • the slot 14 is extended by a zone 18 in which the edges of the slot are substantially parallel. So each end of the conductive part is in the form of a fork, each of which arm has a certain elasticity, thanks to which the slot 14 can receive cables of different diameters while ensuring a excellent electrical contact.
  • edges of the slot 14, both at the level of the V-shaped zone 16 that at the level of the zone 18 where the edges are parallel, are thinned. This thinning does not give the slit the cutting function but is made to fit the dimensions of the cutout that is made at level of the springs 4 and which will be described later.
  • a tongue 20 is produced substantially in the middle of the part conductive to allow it to snap into the insulating housing 2.
  • FIG. 2 shows in more detail a spring 4.
  • a spring is formed from an elastic blade which can also be, for example, copper.
  • This elastic blade is folded so as to form a spring.
  • the width of the elastic blade used is substantially equal to the width of the blade used to make the conductive part 6.
  • the central area of the elastic blade is folded so as to form an arc of a circle over a little more than 180 °. So the ends substantially parallel to the spring can move elastically one compared to each other. In the rest position, represented in FIG. 1 by example, the two ends of the elastic blade are offset one by compared to each other.
  • a first end of the elastic blade is folded so that you can come and take the swan neck shape from one end of the conductive part 6.
  • each spring 4 comes to take place in its housing 8 on one end of the conductive part 6.
  • the rounded central part of the spring 4 is placed at the base of the swan neck shape of one end of the conductive part 6.
  • the spring 4 follows the upper face of the entire end in the form of gooseneck of the conductive part 6 and one end of this spring protrudes from the conductive part 6. The other end of the spring 4 comes place over this first end.
  • the end of the spring 4 which rests on the conductive part 6 is provided with a window 22.
  • this window 22 On the side of the end of the spring 4, this window 22 has a space 24 of sufficient size to receive a electric cable to connect.
  • Inside window 22 is also two stripping lips 26. These lips 26 extend in a transverse direction relative to the elastic blade forming the spring 4 and are inclined opposite the other end of the spring. So these lips protrude from the elastic blade on the side of the conductive part 6 when the spring 4 is mounted on this conductive part 6 (FIGS. 4 to 6).
  • the ends of the lips 26 are spaced apart from each other so to cut the insulating sheath of an electric cable which moves longitudinally relative to the elastic blade forming the spring 4 without damage the conductive core of this cable.
  • Window 22 also shows a space 28 intended to receive a cable once it has been locally stripped by stripped lips 26.
  • the spring 4 is placed on the conductive part 6 so that that the stripping lips 26 abut against the end of the part conductive 6.
  • the lips 26 are then in front of the slot 14. We ensures that the stripping area of the lips 26 is at the level of the thinned edges of the slot 14.
  • the other end of the spring 4 is also provided with a window 30.
  • Window 30 shows a substantially square shape with two longitudinal edges and two edges transverse to the elastic blade forming the spring 4. The two transverse edges are each provided with a lug 32.
  • Each lug 32 extends towards the other end of the spring 4. These lugs resume substantially the shape of the stripping lips 26. There are thus lugs in V shape, each branch of the V being inclined substantially the same so that the lips 26 are inclined. In this way, the pins 32 allow good guidance of a cable to be connected to pass this cable between the stripping lips 26. The cable to be stripped and connected is then guided over the entire height of the lug and not just on the thickness of the elastic blade 4.
  • the window 30 In the rest position of the spring 4, the window 30 is substantially above the space 28 of the window 22. In position window 30 is located above space 24 of the window 22.
  • a tongue 34 is provided on each spring 4 in order to properly hold it on the conductive part 6.
  • the tongue 34 can by example cooperate with the end of a slot 14 opposite the end having a V-shaped zone 16
  • Figure 4 shows a conductive part 6 and two springs 4 at rest in the insulating housing 2.
  • the springs 4 and the shaped ends of the swan neck of the conductive part 6 are each placed in a housing 8.
  • stops 36 are provided inside the housings 8. There is thus a stop 36 placed inside the rounding of the spring 4 and another stop 36 allowing the correct positioning of one end of the conductive part 6.
  • connection device The operation of a connection device according to the invention is described below with reference to FIGS. 4 to 6.
  • FIG. 4 shows the two connection devices in position rest.
  • Each space 24 intended to receive a cable to be connected is is located opposite an opening 10 of the housing.
  • Windows 30 for the movement of a cable are erased relative to these openings 10.
  • a first operation to perform to allow the connection of a cable is to prestress the spring 4. This is achieved by introducing the end of a tool, for example a screwdriver blade, through a opening 12 of the housing 2.
  • the blade 38 of the screwdriver meets the spring 4 and is deflected towards a wall 40 of the housing 8.
  • this wall 40 is such that by fully inserting the screwdriver into opening 12 until that the blade 38 of the screwdriver comes to the bottom of the housing 8, or more precisely comes into abutment against the conductive part 6, the spring either deformed so that the window 30 of the spring comes facing the space 24 of window 22 of the spring intended to receive a cable 42 to be connected.
  • Figure 5 shows the spring 4 in its pre-stressed position thanks to the action of the screwdriver blade 38 and also shows the end of a cable 42 which has been introduced through an opening 10 in the box 2.
  • This end of cable 42 encounters no obstacle and first crosses the window 30 of the spring then the space 24 of the window 22 of this spring.
  • the cable 42 consists of a conductive core and an insulating sheath.
  • the end of the cable 42 is now introduced into the case 2, the screwdriver blade 38 can be removed from this case 2.
  • the spring 4 is then released.
  • the energy stored by this spring during its deformation by the screwdriver blade is restored and used to pass the end of the cable 42 through the stripping lips 26 and to carry out the connection at the conductive part 6.
  • the end of the cable 42 is guided over the entire height of a lug 32 when it passes between the lips 26.
  • the insulating sheath of the cable is cut transversely to the axis of cable 42 thus exposing locally the conductive core of the cable.
  • the shape of the lips 26 gives them a elasticity which allows them to adapt to the diameters of cables found within a predetermined diameter range. For each diameter of cable in this range, the lips 26 cut the insulating sheath so to locally expose the conductive core without, however, damaging it.
  • the end of the cable is brought into the slot 14 of the conductive part 6.
  • the stripped area of the end of the cable 42 then slides at the level of the thinned edges of the slot 14.
  • the end of the cable 42 is housed at the base of the zone 16 in the form of V.
  • the spring is then not in its rest position. A constraint elastic is therefore still exerted on the cable 42 via including lug 32. This constraint promotes good contact electric between the conductive core of the cable 42 and the conductive part 6.
  • the means for moving the end of the cable to be connected and the means for locally stripping it are carried out on a same piece, the spring.
  • part of this spring is fixed and does not move during any the connection operation. It is therefore quite possible to have a fixed part at which the stripping of the end of the cable and a moving part to allow movement thereof.
  • connection device to another device electric than a terminal block is of course also possible.
  • Such connection device can be used for connecting a cable to various types of electrical equipment. This device can also be used without the presence of an insulating box.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Cable Accessories (AREA)
EP99420087A 1998-04-17 1999-04-02 Dispositif de connexion autodénudant Expired - Lifetime EP0951094B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9805053 1998-04-17
FR9805053A FR2777702B1 (fr) 1998-04-17 1998-04-17 Dispositif de connexion auto-denudant

Publications (2)

Publication Number Publication Date
EP0951094A1 EP0951094A1 (fr) 1999-10-20
EP0951094B1 true EP0951094B1 (fr) 2003-06-11

Family

ID=9525554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99420087A Expired - Lifetime EP0951094B1 (fr) 1998-04-17 1999-04-02 Dispositif de connexion autodénudant

Country Status (5)

Country Link
US (1) US6146186A (es)
EP (1) EP0951094B1 (es)
DE (1) DE69908700T2 (es)
ES (1) ES2204087T3 (es)
FR (1) FR2777702B1 (es)

Families Citing this family (23)

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FR2803440B1 (fr) * 2000-01-04 2002-08-16 Entrelec Sa Ressort de fixation d'un bloc de jonction ou similaire sur un rail
FR2809537B1 (fr) * 2000-05-24 2003-09-26 Entrelec Sa Ressort de connexion
DE20009541U1 (de) * 2000-05-27 2001-10-11 Weidmüller Interface GmbH & Co, 32760 Detmold Anschlußvorrichtung für elektrische Leiter und Reihenklemme
DE10034589C2 (de) * 2000-07-14 2002-12-12 Phoenix Contact Gmbh & Co Anschlußklemme für elektrische Leiter
DE10036718B4 (de) * 2000-07-27 2004-10-21 Siemens Ag Schneidklemmeinrichtung
EP1353407B1 (de) * 2002-04-12 2011-01-19 Weidmüller Interface GmbH & Co. KG Anschlussvorrichtung für Leiter
US20050090159A1 (en) * 2003-10-28 2005-04-28 Luther Robert R. Electrical wiring device
US7090530B1 (en) * 2005-09-22 2006-08-15 Dibble Howard A Quick connect electrical box
GB0607602D0 (en) * 2006-04-18 2006-05-24 Bernardis Bernardino De Improvements In And relating To Connectors
FR2902239B1 (fr) * 2006-06-09 2008-11-28 Legrand France Borne de connexion auto-denudante d'un conducteur electrique isole et appareillage elelctrique comportant une telle borne
DE102010014615B4 (de) * 2010-04-10 2012-08-09 Tyco Electronics Nederland B.V. Anschlussklemme mit Schneideinrichtung für eine elektrische Leitung
DE202010014149U1 (de) * 2010-10-09 2012-01-10 Woertz Ag Elektrische Verbindungsklemme
DE102011115637B4 (de) * 2011-06-21 2014-03-27 Phoenix Contact Gmbh & Co. Kg Elektrische Anschlussklemme
DE102011054418B4 (de) * 2011-10-12 2015-01-22 Phoenix Contact Gmbh & Co. Kg Federkörper einer Federkraftklemme und Federkraftklemmanordnung
DE102011054425A1 (de) * 2011-10-12 2013-04-18 Phoenix Contact Gmbh & Co. Kg Federkörper einer Federkraftklemme und Federkraftklemmanordnung
EP3105771B1 (de) * 2014-02-13 2018-10-03 Ellenberger & Poensgen GmbH Thermischer überstromschutzschalter
TWI605652B (zh) * 2016-05-16 2017-11-11 Wire connection terminal device
DE102016111536A1 (de) * 2016-06-23 2017-12-28 Wago Verwaltungsgesellschaft Mbh Kontakteinsatz einer Federkraftanschlussklemme sowie damit ausgebildete Federkraftanschlussklemme
TWI645634B (zh) * 2017-05-08 2018-12-21 進聯工業股份有限公司 Conductive component structure for wire connection terminals
TWD188672S (zh) * 2017-05-08 2018-02-21 進聯工業股份有限公司 Wire connection terminal housing
JP1623945S (es) * 2018-03-14 2019-02-04
JP1623420S (es) * 2018-03-14 2019-02-04
US10511108B1 (en) * 2019-01-07 2019-12-17 Dinkle Enterprise Co., Ltd. Dual-wire connector

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FR2503464A1 (fr) * 1981-04-03 1982-10-08 Alsthom Cgee Bloc de jonction a raccordement electrique sans denudage
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FR2598039B1 (fr) * 1986-04-28 1990-09-21 Alsthom Cgee Agencement de connexion a fente pour fil electrique et embout d'outil de connexion correspondant
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Also Published As

Publication number Publication date
DE69908700T2 (de) 2004-01-15
FR2777702B1 (fr) 2000-06-16
FR2777702A1 (fr) 1999-10-22
DE69908700D1 (de) 2003-07-17
EP0951094A1 (fr) 1999-10-20
US6146186A (en) 2000-11-14
ES2204087T3 (es) 2004-04-16

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