EP0307305A1 - Elektrische Verbindungseinrichtung für elektrischen Apparatanschluss, so ausgerüstetes elektrisches Schütz und alle Teile, die dazu gehören - Google Patents

Elektrische Verbindungseinrichtung für elektrischen Apparatanschluss, so ausgerüstetes elektrisches Schütz und alle Teile, die dazu gehören Download PDF

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Publication number
EP0307305A1
EP0307305A1 EP88402245A EP88402245A EP0307305A1 EP 0307305 A1 EP0307305 A1 EP 0307305A1 EP 88402245 A EP88402245 A EP 88402245A EP 88402245 A EP88402245 A EP 88402245A EP 0307305 A1 EP0307305 A1 EP 0307305A1
Authority
EP
European Patent Office
Prior art keywords
adapter
housing
clamping
opening
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.)
Granted
Application number
EP88402245A
Other languages
English (en)
French (fr)
Other versions
EP0307305B1 (de
Inventor
René Barbier
Serge Guenin
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.)
Telemecanique SA
Original Assignee
Telemecanique Electrique SA
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 Telemecanique Electrique SA filed Critical Telemecanique Electrique SA
Publication of EP0307305A1 publication Critical patent/EP0307305A1/de
Application granted granted Critical
Publication of EP0307305B1 publication Critical patent/EP0307305B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
    • H01H11/0031—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches for allowing different types or orientation of connections to contacts
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/34—Conductive members located under head of screw

Definitions

  • the present invention relates to an electrical connection device for an electrical appliance terminal.
  • the present invention also relates to a circuit breaker thus equipped.
  • the present invention also relates to a set of components for the manufacture of electrical devices.
  • the manufacturers offer for a device of given rating, a range of overcurrent overload relays whose maximum setting values range between a very low current value, and the nominal value of the device.
  • the electrician will choose the cross-section of the connecting conductors according to the size of the relay used.
  • the device must therefore be provided with connection means suitable for all sections of conductors corresponding to intensities located in the range for which the device is designed.
  • connection means which ensure a good quality of tightening of the large conductors, risk damaging the conductors of small section. It is therefore necessary to adapt the size or type of the connection means as a function of the cross section of the conductor and therefore of the size of the overcurrent relay used.
  • connection device of the clamp type for a range of sections of connection conductors and of the cage type for another range.
  • the wire is pinched between a movable clamping member, called a stirrup, mounted floating under the head of a screw which passes through it, and a fixed clamping member provided with a tapped hole, in which the screw is screwable to clamp the conductor between the two clamping members on one side or the other of the screw.
  • the stationary clamping member is generally a conductive bar connected to the electrical means contained inside the device.
  • a screw is screwed into a tapped hole at the top of an annular cage, of rectangular shape, and carries at its free end situated inside the cage, a floating pinching member coming to tighten the conductor against a fixed pinching member pressed against the inside of the base of the cage.
  • the cage device is not suitable for conductors with a small cross section because these would be positioned in an uncertain manner between the fixed and movable pinching members, and also because the clamping force developed would overstress them.
  • the stirrup devices are not suitable for conductors with a large cross section because the space available on either side of the screw is insufficient to introduce them.
  • the object of the invention is thus to propose an electrical connection device which makes it possible to cover the two ranges of cross-section of conductors with identical housings.
  • the invention thus relates to an electrical connection device for an electrical appliance terminal, intended to removably connect an electrical wiring conductor of the appliance with a conductive pad of the appliance, this connection device comprising a housing formed in a housing of the apparatus and communicating with the outside of the housing by an opening for introducing the wiring conductor and by an opening for introducing a screwdriver or the like, a fixed clamping member carrying the conductive pad and a clamping member mobile biased towards each other by a clamping means operable by the screwdriver or the like.
  • the electrical connection device is characterized in that in the housing is fitted substantially without clearance an adapter having a cavity in which the gripping members are positioned and in which the movable gripping member is guided, the adapter with openings opposite the housing openings.
  • the adapter offers the connection device a cavity perfectly suited to its size.
  • connection device means for clamping the conductor against a contact pad
  • connection device the larger assembly including the connection device and its functional environment when it is mounted in the housing.
  • connection devices of high caliber are placed directly in the housings of the housing, whereas during the construction of 'an electrical device for lower current, therefore in order to use conductors of small section, there are in the housing of the connection devices according to the invention.
  • the invention also relates to a circuit breaker comprising a series of input terminals and a series of output terminals characterized in that the terminals of at least one of the series are each equipped with a device according to the first aspect of the invention.
  • the input and output terminals are equipped with the same connection devices.
  • the output terminals which, alone, will be equipped with the device according to the invention, while the input terminals are equipped with connection devices for wires of larger cross section, for example cage devices.
  • the invention also relates to a set of components for the manufacture of electrical devices, comprising all identical housings in which are defined housings communicating with the exterior of said housings by an opening for introducing a wiring conductor and by a opening for the introduction of a screwdriver or the like, and of the first clamping connection devices, for clamping conductors of relatively large gauge, these devices being nestable substantially without play in said housings, characterized in that it further comprises second clamping connection devices for clamping relatively small gauge conductors, and adapters which can be fitted substantially without play in the housings and which have a cavity adapted to receive and guide the second clamping devices connection by clamping, this cavity having openings positioned to be opposite the openings of the housings when the adapters are fitted into the housings.
  • the circuit breaker comprises a housing 1 of very generally parallelepiped shape and three input terminals 2 adjacent to one end face 6 of the housing, and three output terminals 4 adjacent to the other face d end 6 of the housing, opposite the first.
  • the housing 1 comprises a body 7 and a removable cover 8 which together define, for each terminal 2 or 4, a housing 9 separated from the other housings by thick partitions 11 of the body 7 and by thinner partitions 12 of the cover 8.
  • the free ends 13 of the partitions 12 engage in grooves 14 of the partitions 11 to lengthen the arc path.
  • Each housing 9 is closed towards the rear, that is to say on the side opposite to the face 6, by a partition 16 carried by the cover 8 in the direction of the body 7. As shown in FIGS. 1 and 3, each partition 16 has a region extending substantially without play between the two partitions 11 of the associated housing.
  • the housing 1 defines for each housing 9 an opening 17 through which the latter communicates with the outside.
  • the body 7 d housing 1 has for each housing 9 a rectangular notch 18 in its edge 19 of joint with the cover 8.
  • the cover 8 has for each notch 18 of the body 7 a tongue 21 of the same width as the notch 18 and partially closing it, each opening 17 thus being defined jointly by a notch 18 and an associated tongue 21.
  • each housing 9 is defined by an upper wall 22 of the cover 8.
  • the wall 22 has for each housing 9 a circular opening 23 through which the housing 9 communicates with the outside to allow the introduction of a screwdriver or the like 24 ( Figure 1).
  • each housing 9 is closed below by a wall 26 of the body 7.
  • the device has for each terminal 2 or 4 an electrical contact pad 27 carried by a conductive bar 28 connected to the means contained by the device.
  • the conducting strip 28, at its end opposite to the contact pad 27, is bent twice at 90 ° to carry at its end a contact pad 29 facing a movable contact bridge 30 between a circuit open position, represented in FIG. 1, and a closed position in which the contact bridge 30, supported on contact 29 and on a similar contact associated with an output terminal 4, realizes in short-circuit between these terminals.
  • a contact bridge such as 30 is provided for each pair of terminals 2, 4.
  • Each bar 28 is fixed by means of two screws 128 on a wing 31 of the wall 26. At its end directed towards the interior of the apparatus, the wing 31 is notched at 32 to allow mounting the engagement of the doubly curved end of the bar 28.
  • each contact pad 27 must be made between each contact pad 27 and a wiring conductor 33, one stripped end 34 of which is introduced through the opening 17 and applied to the pad 27 .
  • each housing 9 is provided with this effect of a cage connection device comprising an annular cage 36, of substantially parallelepiped external shape (see FIG. 3), a bottom wall 37 rests on the free end of two ribs 38 of the wall 26. The wall of bottom 37 is therefore interposed between the ribs 38 and the bar 28.
  • the cage 36 further comprises two side walls 40 each pressing against one of the partitions 11 of the body 7 of the housing.
  • the cage 36 is closed by a head wall 39 located substantially in the joint plane body 7 - cover 8 of the housing 1. Opposite the opening 23 for introducing a screwdriver, the head wall 39 is crossed by a tapped hole in which is engaged a clamping screw 41 whose head 142 is directed towards the opening 23.
  • a pinching member 143 is attached to the end of the screw 41 situated inside the cage 36, by a crimp allowing a relative rotation between the screw 41 and the movable clamping member 143.
  • the clamping member 143 which faces the area 27 of the bar 28 constituting the stationary clamping member, has a generally square shape while being slightly curved in the plane (of Figure 3) perpendicular to the direction of introduction of the conductor 33. The side of this square has a value such that the side walls 40 of the cage prevent rotation of the movable pinching member 143 around the axis of the screw 41.
  • the same housing 1, comprising a body 7 and a cover 8 is used to make a circuit breaker for currents of maximum current equal for example to 25 amperes, the conductors being of small section.
  • the contact bars 28 are also the same as those in FIGS. 1 to 3.
  • the connection device is of the caliper type and more particularly comprises a screw 42 which is screwed into a tapped hole 43 in the plate 28 and whose the head 44 is directed towards the opening 23 so as to be accessible through the latter by means of a screwdriver 45.
  • the screw 42 Between its head 44 and its threaded region 46, the screw 42 has a throttle 47 around which is held captive a movable pinching member 48 of generally square shape curved in the plane perpendicular to the direction of introduction of the stripped end 49 d '' a small wiring conductor 51.
  • each side of the square movable pinching member 48 is much less than the distance between the successive partitions 11 of the housing body 7.
  • an adapter 52 (shown alone in FIGS. 6 and 7) made of molded plastic material, in the general shape of a hollowed parallelepiped having the same external dimensions as the cage 36.
  • the adapter 52 comprises, on either side of a cavity 80, two lateral wings 53 substantially parallel to the direction of introduction of the conductor 51 through the opening 17.
  • the wings lateral 53 extend on either side of the movable clamping member 48 and the fixed clamping member 28, each against the adjacent wall 11.
  • the free distance d between the lateral wings 53 is slightly greater than the corresponding dimension of the movable pinching member 48 so that the latter can slide between the wings 53 but is prevented from rotating between them around the axis of the screw. 42.
  • each lateral wing 53 closes one of the sides of an area nip included between the fixed nip 28 and movable nip 48.
  • the two lateral wings 53 are connected to each other by a bracing comprising, on either side of the cavity 80, a adapter base 56 (see FIGS. 4, 6 and 7 and left part of FIG. 5) and an adapter head 57.
  • the adapter base 56 extends opposite the external face of the clamping member stationary 28, opposite the nip, and the adapter head 57 extends opposite the outer face of the movable nip 48, which face is also opposite to the pinching zone.
  • the adapter head 57 is traversed by a well 59 extending along the axis of the screw 42, between the latter and the orifice 23, to allow the screwdriver 45 to reach the screw head 44 through the orifice 23 and well 59.
  • the well 59 furthermore guides the screw head 44 when the fixed 28 and mobile 48 gripping members are in the vicinity of their maximum mutual distance.
  • the adapter head 57 has, on the side adjacent to the cavity 80, an abutment face 61 which, seen in the direction of introduction of the conductor 51 (FIG. 5), has a vaulted profile substantially matching the profile of the movable nipping 48 when the latter is in its position of maximum spacing relative to the movable nipping member 48 when the latter is in its position of maximum spacing relative to the stationary nipping member 28, while the head screw 44 is engaged in the well 59 (see left part of Figure 5).
  • the face 61 limits the mutual spacing of the two gripping members 28, 48.
  • the screw is given its shortest possible length allowing to achieve both a maximum spacing given between the clamping members 28, 48 and the retaining function of the screw 42 in the position maximum spacing.
  • the projecting part of the screw 42 is also engaged in an opening 64 made through the bottom 56 of the adapter.
  • the bottom 56 rests on the ribs 38.
  • the opening 64 has a diameter greater than that of the rod of the screw 42.
  • the adapter 52 is positioned between the ribs 38, on which its bottom 56 rests, and shoulders 66 carried by internal ribs 67 of the cover 8, adjoining respectively the partition 16 associated with the housing 9 considered, and a wall 68 of the cover, which contributes to defining the end face 6 of the housing 1.
  • the shoulders 66 are turned towards the body 7 and situated substantially in the joint plane body 7 - cover 8.
  • the position of the adapter 52 in the direction of introduction of the conductor 51 is defined between the partition 16 of the housing 9 considered and the rib 67, which extends beyond the shoulder 66 behind the tongue 21.
  • the adapter 52 mounted in this housing.
  • the adapter 52 perfectly occupies the volume left free by the cage 36.
  • the bar 28 is fixed by means of two screws 128 on the wing 31 of the wall 26 belonging to the body 7 of the housing 1.
  • the bar 28 and the adapter 52 position the screw 42 and the movable pinching member 48.
  • the adapter also has a projection 69 comprising a front panel 71 (FIGS. 4, 6, 7) of rectangular shape, two opposite edges of which are connected to the wings 53 by two bearing wings 72 situated substantially in the extension of the wings 53.
  • the panel 71 partially closes the opening 17, and, more particularly, closes approximately half of the opening 17 which is adjacent to the tongue 21 of the cover, and which therefore is furthest from the contact pad 27, so that, during wiring, the introduction of the conductor 51 is systematically carried out near said area, through an opening 81 which the adapter has between the panel 71 and the bottom 56 (FIGS. 6 and 7).
  • the screw 42 being screwed substantially fully to bring the two together as close as possible clamping members 28 and 48. It is only in this position of minimum or almost-minimal spacing of the clamping members that the yoke connection device is removable relative to the adapter 52.
  • the rear opening of the adapter 51 is defined between a free rear edge 74 of the abutment surface 61, a free rear edge of each lateral wing 53, and a free rear edge 76 of the bottom 56.
  • the adapter which has just been described provides the following technical effects: - obturation of part of the opening 17, part - made unnecessary by the removal of the cage, the remaining part allowing a correct introduction of the conductor under the stirrup; - stirrup guide during tightening; - retaining the adapter 52 by its bottom 56 engaged under the bar 28 and retaining the screw assembly 42 - stirrup 48 by stirrup of the stirrup 48 under the head 57 of the adapter 52 when the tip of the screw is still engaged in its tapped hole; - Consequently, captivity of the various components of the connection device (unless the operations described in reference to Figures 8 and 9 are carried out in reverse order); and - ease of assembly.
  • three bus bars 82 supply several circuit breakers 83a, 83b, ...
  • the input of the circuit breaker 83b instead of being connected directly to the bars 82, is connected by bridges 86a to l input of circuit breaker 83a.
  • Other bridges 86b connect the input of the circuit breaker 83b to the input of a next circuit breaker, not shown.
  • Each circuit breaker 83a, 83b set to open the circuit when a relatively low maximum current is reached, delivers at its output only a current having at most the maximum current in question. This allows connect conductors 87 of small cross-section to the output of each circuit breaker 83a, 83b.
  • a connection device according to the invention is placed at the output terminals 4, comprising an adapter 52 positioning and guiding a yoke connection device.
  • each input terminal 2 must accommodate two conductors 84, 86a or respectively 86a, 86b.
  • each of these two conductors carries the current intended for all the circuit breakers located downstream plus, for one of the two conductors, the current intended for the circuit breaker to which the terminal in question belongs.
  • These conductors must therefore be of relatively large size. The connection of two such conductors to the same terminal leads to choosing a larger connection device, for example of the cage type 36, without adapter.
  • the housings 1 of these circuit breakers 83a, 83b are identical to that of FIGS. 1 to 5, the terminals 2 being fitted with cage connection devices 36 and the terminals 4 being fitted with stirrup connection devices 48 housed in adapters 52.
  • the adapter could be made for the adapter to have, instead of the bottom 56, simply two lower edges of the wings 53, which would allow the adapter-connection device assembly by simply spacing the wings 53.
  • bracing means only comprise the bottom such as 56, the head being replaced by conformations of each lateral wing suitable for, for example, guiding the screw and / or limiting the spacing of the '' bracket relative to the bar.
  • connection devices can be of the elastic clamping type in which a movable clamping member is applied by a spring to clamp the conductor against a fixed clamping member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Breakers (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
EP88402245A 1987-09-11 1988-09-07 Elektrische Verbindungseinrichtung für elektrischen Apparatanschluss, so ausgerüstetes elektrisches Schütz und alle Teile, die dazu gehören Expired - Lifetime EP0307305B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8712609 1987-09-11
FR8712609A FR2620578B1 (fr) 1987-09-11 1987-09-11 Dispositif de raccordement electrique pour borne d'appareil electrique, disjoncteur ainsi equipe, et ensemble de constituants s'y rapportant

Publications (2)

Publication Number Publication Date
EP0307305A1 true EP0307305A1 (de) 1989-03-15
EP0307305B1 EP0307305B1 (de) 1993-01-07

Family

ID=9354808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88402245A Expired - Lifetime EP0307305B1 (de) 1987-09-11 1988-09-07 Elektrische Verbindungseinrichtung für elektrischen Apparatanschluss, so ausgerüstetes elektrisches Schütz und alle Teile, die dazu gehören

Country Status (5)

Country Link
US (1) US4889504A (de)
EP (1) EP0307305B1 (de)
JP (1) JPH01157073A (de)
DE (1) DE3877295T2 (de)
FR (1) FR2620578B1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20061322A1 (it) 2006-07-07 2008-01-08 Morsettitalia Spa Ponticello isolato particolarmente per morsetterie di quadri elettrici
ITMI20061496A1 (it) * 2006-07-28 2008-01-29 Morsettitalia Spa Morsetto con elemento conduttore a forma di u per il collegamento di fili elettrici
US7549897B2 (en) 2006-08-02 2009-06-23 Tyco Electronics Corporation Electrical connector having improved terminal configuration
US8142236B2 (en) 2006-08-02 2012-03-27 Tyco Electronics Corporation Electrical connector having improved density and routing characteristics and related methods
US7670196B2 (en) 2006-08-02 2010-03-02 Tyco Electronics Corporation Electrical terminal having tactile feedback tip and electrical connector for use therewith
US7753742B2 (en) 2006-08-02 2010-07-13 Tyco Electronics Corporation Electrical terminal having improved insertion characteristics and electrical connector for use therewith
US7591655B2 (en) 2006-08-02 2009-09-22 Tyco Electronics Corporation Electrical connector having improved electrical characteristics
ITMI20070045A1 (it) * 2007-01-15 2008-07-16 Morsettitalia Spa Morsetto per il collegamento di cavi elettrici
EP1953869B1 (de) 2007-02-05 2014-07-30 Morsettitalia S.p.A. Klemmenblock mit Klemmbackenteil zum Anschliessen eines Flachsteckers von beweglichen elektrischen Kontakten
ITMI20071390A1 (it) * 2007-07-12 2009-01-13 Morsettitalia Spa Elemento di serraggio con elemento conduttore a forma di l rovesciato per il collegamento di fili elettrici
ITMI20070186A1 (it) * 2007-02-05 2008-08-06 Morsettitalia Spa Procedimento per la produzione di elementi di contatto mobili a lamelle ed elementi di contatto attuati conn tale procedimento
ITMI20080674A1 (it) * 2008-04-15 2009-10-16 Morsettitalia Spa Corpo conduttore multistrato e procedimento per la produzione dello stesso
ITMI20080673A1 (it) 2008-04-15 2009-10-16 Morsettitalia Spa Elemento elastico per la trattenuta di fili elettrici e morsetto comprendente tale elemento elastico
EP3051633B1 (de) * 2015-01-27 2018-06-20 Morsettitalia S.p.A. Isolierte brücke vom spindeltyp, insbesondere für anschlussleisten von schalttafeln

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2514206A1 (de) * 1975-04-01 1976-10-07 Norbert Weiner Vorrichtung zur klemmverbindung elektrischer leiter
US4056301A (en) * 1976-03-11 1977-11-01 Norden Alexander Retained screw assembly
DE3442625A1 (de) * 1984-11-22 1986-05-22 Siemens AG, 1000 Berlin und 8000 München Ueberlastrelais

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727965A (en) * 1952-07-30 1955-12-20 Westinghouse Electric Corp Circuit breaker
CH462914A (fr) * 1967-01-25 1968-09-30 English Electric Co Ltd Dispositif pour la connexion de câbles électriques
FR2507828A1 (fr) * 1981-06-12 1982-12-17 Legrand Sa Borne de connexion, notamment pour transformateur
DE3201169C2 (de) * 1982-01-16 1984-06-28 Danfoss A/S, Nordborg Vorrichtung zum Festklemmen elektrischer Leiter insbesondere von Drähten
DE3614592C1 (de) * 1986-04-30 1987-07-23 Krone Ag Anschlussleiste fuer Kabeladern,insbesondere von Fernsprechkabeln

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2514206A1 (de) * 1975-04-01 1976-10-07 Norbert Weiner Vorrichtung zur klemmverbindung elektrischer leiter
US4056301A (en) * 1976-03-11 1977-11-01 Norden Alexander Retained screw assembly
DE3442625A1 (de) * 1984-11-22 1986-05-22 Siemens AG, 1000 Berlin und 8000 München Ueberlastrelais

Also Published As

Publication number Publication date
US4889504A (en) 1989-12-26
FR2620578A1 (fr) 1989-03-17
DE3877295D1 (de) 1993-02-18
JPH01157073A (ja) 1989-06-20
FR2620578B1 (fr) 1990-01-05
EP0307305B1 (de) 1993-01-07
DE3877295T2 (de) 1993-05-06

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