EP0592342B1 - Connecteur de sécurité pour dispositifs de branchement électrique à dérivations multiples - Google Patents

Connecteur de sécurité pour dispositifs de branchement électrique à dérivations multiples Download PDF

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Publication number
EP0592342B1
EP0592342B1 EP19930420398 EP93420398A EP0592342B1 EP 0592342 B1 EP0592342 B1 EP 0592342B1 EP 19930420398 EP19930420398 EP 19930420398 EP 93420398 A EP93420398 A EP 93420398A EP 0592342 B1 EP0592342 B1 EP 0592342B1
Authority
EP
European Patent Office
Prior art keywords
connector according
spring
mountings
elastically deformable
conductor
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
EP19930420398
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0592342A1 (fr
Inventor
Yves Mopty
Gilles Porcheray
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.)
INDUSTRIELLE DE MATERIEL ELECTRIQUE SIMEL Ste
Original Assignee
INDUSTRIELLE DE MATERIEL ELECTRIQUE SIMEL Ste
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Filing date
Publication date
Application filed by INDUSTRIELLE DE MATERIEL ELECTRIQUE SIMEL Ste filed Critical INDUSTRIELLE DE MATERIEL ELECTRIQUE SIMEL Ste
Publication of EP0592342A1 publication Critical patent/EP0592342A1/fr
Application granted granted Critical
Publication of EP0592342B1 publication Critical patent/EP0592342B1/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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
    • 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
    • H01R4/247—Connections using contact members penetrating or cutting insulation or cable strands the contact members penetrating the insulation being actuated by springs
    • 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
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections

Definitions

  • connection devices which are produced in the workshop and which include a series of branches provided at intervals equidistant along a supply line constituted by insulated conductors (three or four as the case may be) assembled together by twisting.
  • Each of these branches includes a connection member formed by a socket or other terminal block which is made integral with the line by stirrups and whose terminals are connected, by short insulated secondary conductors, to connectors with perforation of insulation connected to the conductors of the main line.
  • This type of multiple branch connection device is particularly well illustrated by document FR-A-2 656 470 and document FR-A-2 601 516.
  • connection device In some cases and especially when such a connection device is intended for lighting a completely dark environment, it is feared that a sharp rise in temperature following the appearance of a localized fire could cause 'Damage to at least one of the branches, such damage being of a nature to generate a short circuit causing the device to be tripped and the sudden stopping of all the lighting of the environment in question.
  • the connector according to the invention is of the type of those formed by two elements which are assembled to one another using a threaded tightening tie and at least one of which contains at least one metal blade of connection provided at its ends with transverse points or teeth capable, during the operation of the aforementioned tie rod, of protruding through slots made in support linings and of penetrating into the insulator and into the metallic core of the main conductor and the secondary conductor previously engaged between the two elements.
  • the originality of the safety connector according to the invention resides in the fact that at least one of its two elements is equipped with an elastically deformable means which simultaneously bears against the element in question and against the main conductor so that in the event of softening of the connector under the effect of a accidental rise in ambient temperature, this means causes the separation of the two elements and the withdrawal of the teeth from the metallic core and from the insulator of the main conductor.
  • the elastically deformable means can take the form of either a metal spring of the pin, leaf or flange type, or a support lining made of a synthetic material having elastic deformability characteristics allowing it to play the role of retractor devolved to it.
  • Fig. 1 is a perspective view illustrating the arrangement of the internal parts of a safety connector established according to a first embodiment of the invention.
  • Fig. 2 is a plan view showing the inner face of that of the two elements of the connector according to FIG. 1 which contains the pin spring for automatic disconnection in the event of fire.
  • Fig. 3 is an axial section of the connector after assembly and tightening on a main conductor and on a secondary bypass conductor.
  • Fig. 4 reproduced fig. 3 after deformation and opening following an accidental rise in ambient temperature.
  • Fig. 5 and 6 are vertical sections of the connector along the plane indicated in AA in fig. 2, respectively at the positions illustrated in fig. 3 and in fig. 4.
  • FIG. 7 and 8 illustrate in perspective, respectively in section, an alternative embodiment of the connector according to FIG. 1 to 6.
  • Fig. 9 is a section showing another embodiment in which the spacer spring is of the curved blade type.
  • Fig. 10 illustrates in perspective the mounting of this spring on the connection blades, showing the support lining associated with said blades.
  • Fig. 11 and 12 is a section, respectively a perspective view, similar to that of FIG. 9 and 10, illustrating an embodiment in which the spacer spring is of the coil type.
  • Fig. 13 and 14 likewise illustrate a variant.
  • Fig. 15 and 16 are detail sections of a connector established according to another embodiment of the invention.
  • the connector comprises, in the manner known per se, two elements 1 and 2 made of a thermoplastic material shaped by molding.
  • the upper element 1 With the upper element 1 are associated two metal connection blades 3, each of the ends of which is provided with a tip 3 a with transverse teeth, it being observed that in FIG. 1 one of said blades has been assumed to be introduced inside the insulating support lining 4 which is intended to cover it.
  • One and the other of the two linings 4 have two end bosses 4 a , the free face facing downward, established at a concave profile, is cut out by a slot 4 b capable of forming a passage for the tip 3 has correspondent.
  • the lower element 2 is equipped with two support linings 5 identical to the linings 4 described above, it being however noted that said linings 5 are not provided with any means of electrical connection.
  • the metal blades have not been put in place as was assumed in the drawing, or that they have been replaced by blades made of a material which does not conduct electricity.
  • the assembly of the two elements 1 and 2 is ensured using a threaded tie rod 6 which is engaged through a perforation of the element 1 and a guide chimney 2 a of the element 2 to receive a nut.
  • tightening 6 has kept angularly inside a tubular boss 2 b of said element.
  • the upper element 1 has been made to comprise a spring 7 constituted by a metal wire shaped in the manner of a pin; as shown in fig. 1, this spring 7 has a transverse loop 7 a and two lateral tabs 7 b connected by suitably profiled longitudinal parts. As illustrated in fig. 2 to 4, the spring 7 is housed in the body 1 so that the tabs 7 b come to bear against the two linings 4 at one of the points 3 a of each blade 3, while the loop 7 a is arranged above a tooth 1 a formed in the corresponding edge of the element 1, which tooth ensures the retention in place of the pin spring.
  • the connector according to the invention is used in the same way as conventional connectors of the same type, in that the conductor A of the main line and the conductor B of the proposed branch are engaged between the linings 4 and 5.
  • the clamping the pulling thread 6 provides the approximation of the two elements 1 and 2, the crushing of the bosses 4a and 5a, the passage of spikes or teeth 3a through the slots 4b, the penetration of the teeth into the insulation of the two conductors A and B and finally their anchoring in the metallic core of these.
  • the conductors A and B are then electrically connected to each other through the two blades 3, as illustrated in FIG. 3 and 5.
  • tooth 1 a no longer ensures the retention of the loop 7 a of the spring 7 which is thus released, so that this loop comes to bear against the main conductor A, while the lateral tabs 7 b continue to exert their action on the teeth 3 b through the thin thickness of the linings 4.
  • the connector tends to open at the level of the conductor A under the action of the spring 7, in the manner illustrated in FIG.
  • the pin 17 which forms the spacer spring is housed in the lower element 12 of the connector, which element 12 is made of a thermoplastic material which only becomes malleable at a temperature markedly higher than that necessary for softening of the material which constitutes the upper element 11.
  • This spring 17 bears on the one hand by its lateral tabs 17 b against the support linings 14 associated with the blades 13 of the element 11, on the other hand by its loop 17a against the linings 15 of the lower component 12, these liners being devoid of metal blades, as in the embodiment according to fig. 1 to 6.
  • the element 11 which deforms first, so that the spring 17, by pressing against the element 12 which is still rigid and undeformable, drives the element 11 upwards , which has the effect of terminating the connection between the two conductors A and B, in the same manner as described above. It will be observed that it is preferable to make the lower element 12 have two nozzles 12 c capable of overcoming the main conductor A and of retaining it when the upper element 11 has melted.
  • a leaf spring referenced 27 which has a curved profile open upwards and the ends of which are attached to the two connection blades 23, at the level of that of the two points or teeth 23 a of each these which is intended to cooperate with the main conductor A.
  • a liner in one piece comprising two parts 24 (identical to those referenced 4 or 14) connected one to the other by a thin veil 24 c .
  • the leaf spring 27 bears against the main conductor A by its central part which acts through the web 24 c . As, moreover, it bears against the blades 23 by its ends, it is understood that when the accidental rise in temperature reaches the threshold of deformability of the material which constitutes the elements 21 and 22, said blade 27 indeed ensures automatic spacing of the two elements and the disconnection of the two conductors.
  • Fig. 11 and 12 illustrate another embodiment of the connector according to the invention in which the two blades 33 housed in the upper element 31 are connected to each other by a transverse bridge 33 b so as to constitute a single piece .
  • a coil spring 37 against the trigger guard 33 b is supported a coil spring 37, the base of which is housed in a central well 34 d provided in the web 34 c of a double lining 34 similar to that 24 of the previous embodiment.
  • the spring 37 applies the bottom of the well 34 d against the main conductor A, so that in the event of softening of the thermoplastic material which constitutes the two elements 31 and 32 of the connector, this spring 37 operates the spacing of said elements and l extraction of the teeth 33 a out of the driver A.
  • each coil spring 47 bears against a lateral tab 43 c provided on each blade 43 at the tooth 43 a thereof which cooperates with the main conductor A, while its base is applied against the bottom of a small hollow boss 44 d provided laterally on each lining 44.
  • Fig. 15 and 16 illustrate another embodiment of the invention, according to which the elastically deformable means which is compressed during the tightening of the two elements 51 and 52 of the connector in order to operate the spacing of said elements in the event of softening of the synthetic material due to an accidental rise in ambient temperature, is here constituted by the linings 54 which enclose the connection blades of the element 51.
  • Each lining 54 is made of an insulating material having good elasticity joined to good memory , these characteristics should not be altered by a rise in temperature.
  • each lining 54 must have a bridge 54 e suitable for securing the connection blade and the lining, so that the elastic reaction of this the latter works well, in addition to the separation of the two elements 51 and 52, the removal of the teeth 53 a .
  • the linings 54 may be directly molded onto the blades 53.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Fuses (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
EP19930420398 1992-10-09 1993-10-08 Connecteur de sécurité pour dispositifs de branchement électrique à dérivations multiples Expired - Lifetime EP0592342B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9212371 1992-10-09
FR9212371A FR2696879B1 (fr) 1992-10-09 1992-10-09 Connecteur de sécurité pour dispositifs de branchement électrique à dérivations multiples.

Publications (2)

Publication Number Publication Date
EP0592342A1 EP0592342A1 (fr) 1994-04-13
EP0592342B1 true EP0592342B1 (fr) 1995-06-21

Family

ID=9434585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930420398 Expired - Lifetime EP0592342B1 (fr) 1992-10-09 1993-10-08 Connecteur de sécurité pour dispositifs de branchement électrique à dérivations multiples

Country Status (6)

Country Link
EP (1) EP0592342B1 (fi)
DE (1) DE69300207T2 (fi)
ES (1) ES2075768T3 (fi)
FI (1) FI934404A (fi)
FR (1) FR2696879B1 (fi)
NO (1) NO933553L (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002134185A (ja) * 2000-10-27 2002-05-10 Fci Japan Kk コネクタ
US7090544B2 (en) 2004-08-05 2006-08-15 3M Innovative Properties Company Modular electrical connector and method of using
US7104832B2 (en) 2004-08-05 2006-09-12 3M Innovative Properties Company Modular electrical connector and method of using
WO2007121774A1 (en) * 2006-04-26 2007-11-01 Saae Malico Connectors International En Abrege 'sm-Ci' Electrical connector for connecting at least two electrical conductors
DE102011052013A1 (de) * 2011-07-21 2013-01-24 Zf Lenksysteme Gmbh Elektrisches Steckerteil
CN107681295B (zh) * 2017-04-05 2019-05-03 国网浙江省电力公司衢州供电公司 一种智能绝缘电缆穿刺线夹

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249906A (en) * 1965-03-08 1966-05-03 Gen Electric Thermocouple connector
DE2508594A1 (de) * 1975-02-27 1976-09-09 Wirschitz Gmbh F Kabelabzweigklemme
DE2745465C3 (de) * 1977-10-08 1981-10-08 Felten & Guilleaume Carlswerk AG, 5000 Köln Abzweigvorrichtung für Durchgangs- und Abzweigleiter großen Querschnitts
FR2601516B2 (fr) * 1984-06-15 1988-08-05 Sicame Sa Connecteur de derivation isole pour cables electriques

Also Published As

Publication number Publication date
FI934404A (fi) 1994-04-10
NO933553L (no) 1994-04-11
FI934404A0 (fi) 1993-10-07
DE69300207T2 (de) 1995-10-26
FR2696879A1 (fr) 1994-04-15
NO933553D0 (no) 1993-10-05
ES2075768T3 (es) 1995-10-01
FR2696879B1 (fr) 1994-12-23
DE69300207D1 (de) 1995-07-27
EP0592342A1 (fr) 1994-04-13

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