EP0148056B1 - Sich nicht lösende Universalklemme zur Realisierung von elektrischen Quetschverbindungen zwischen zwei leitenden Elementen - Google Patents

Sich nicht lösende Universalklemme zur Realisierung von elektrischen Quetschverbindungen zwischen zwei leitenden Elementen Download PDF

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Publication number
EP0148056B1
EP0148056B1 EP84402493A EP84402493A EP0148056B1 EP 0148056 B1 EP0148056 B1 EP 0148056B1 EP 84402493 A EP84402493 A EP 84402493A EP 84402493 A EP84402493 A EP 84402493A EP 0148056 B1 EP0148056 B1 EP 0148056B1
Authority
EP
European Patent Office
Prior art keywords
stirrup
screw
plate
terminal
screwing
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
Application number
EP84402493A
Other languages
English (en)
French (fr)
Other versions
EP0148056A3 (en
EP0148056A2 (de
Inventor
Claude Barrabes
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
La 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 La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Priority to AT84402493T priority Critical patent/ATE29630T1/de
Publication of EP0148056A2 publication Critical patent/EP0148056A2/de
Publication of EP0148056A3 publication Critical patent/EP0148056A3/fr
Application granted granted Critical
Publication of EP0148056B1 publication Critical patent/EP0148056B1/de
Expired 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/301—Clamped connections, spring connections utilising a screw or nut clamping member having means for preventing complete unscrewing of screw or nut

Definitions

  • the present invention relates to a universal captive terminal intended to make electrical connections by clamping between two conductive elements such as, for example, an electrical wire and a connection pad of an electrical appliance.
  • the first type of terminals does not require any special preparation of the end of the electric wire where the connection must be made, if not a simple stripping, in the case where the electric wire is found covered with an insulation sheath.
  • the connection area is located at the bottom of a cell made in an insulating body and constituting a guide cage, and has a tapped hole (or even a smooth hole to the right of which is arranged a nut), into which is screwed a clamping screw fitted with a bracket.
  • this stirrup of width substantially equal to that of the cell, is mounted captively under the head of the screw (between head and thread).
  • the screw is unscrewed and then the end of the wire, if bare, is introduced into the free space between the connection pad and the bracket. The screw is then screwed until the end of the wire is properly compressed between the stirrup and the connection plate.
  • the cell comprises, preferably at the opening through which the screwing is practiced, a narrowing, either made in one piece or constituted by an element reported such as a hood.
  • the second type of terminal generally called cage terminals, involves a clamping cage open at least at one of its ends to allow the passage of the terminal or possibly the end of a wire and a face provided with '' a threaded hole into which a screw is screwed.
  • this cage is mounted inside a cell made in a body of insulating material. To ensure the captivity of the screw, this cell has, at the opening through which the screwing takes place, a narrowing in which abuts, at the end of unscrewing, the. screw head.
  • a terminal comprising a connection pad disposed at the bottom of a cell formed in a body of insulating material and having a central bore associated with first screwing means, a screw clamp intended to pass through the bore and to be screwed into the first screwing means, a stirrup through which said screw passes and a movable assembly comprising a stirrup plate equipped with second screwing means into which the screw is screwed and retaining means provided with at least one part forming a stop for said stirrup.
  • the invention therefore aims to eliminate these drawbacks. It more particularly relates to a universal connection terminal which can receive all kinds of conductors, both electric wires without special preparation, as wires equipped with open or closed terminals of maximum width, this terminal being furthermore equipped with means ensuring the of its components.
  • the aforesaid cell comprises a narrowed opening so as to prevent the mobile assembly, formed by the screw, the stirrup, the stirrup plate and the retaining means, from escaping.
  • the terminal previously described presents multiple possibilities of use. It is suitable for the connection of closed lugs which, in the unscrewed position of the screw, can engage between the connection pad and the stirrup plate, then be tightened by screwing the screw, the latter then passing through the piercing the terminal. It can also receive, in a similar way, one or more electric wires without any particular preparation.
  • the electrical wires can be introduced between the stirrup and the stirrup plate, then be clamped between these two parts.
  • This solution facilitates the introduction of the wires thanks to the mobility inside the cell of the assembly formed by the screw, the stirrup and the stirrup plate in the closed position of the screw.
  • the retaining means associated with the stirrup plate can be very varied.
  • They may for example consist of at least one lateral extension of the stirrup plate, which rises substantially at right angles and comprises at its end a return extending in the passage volume of the stirrup and / or of the head of the screw, so as to limit its axial travel at the end of unscrewing when the screw is released from the threads of the connection pad.
  • the stirrup plate comprises two diametrically opposite lateral extensions and therefore has a U-shape whose two ends are folded inwards and extend partially in the passage area of the stirrup and / or the head of the screw.
  • the terminal according to the invention applies to the connection of conductive elements of various shapes and types. Among these, it has simply been shown, in FIGS. 1 and 2, that the conductors which are most useful for understanding the operation of the terminal and the advantages which it provides.
  • Figure 1 shows an electric wire 1 with stranded conductors 2 wrapped in an electrically insulating sheath 3 and the end of which has been stripped for connection.
  • FIG. 2 represents an electric wire 4 of a type similar to the previous one, but equipped with a closed terminal 5 comprising a flat connection pane 6 of substantially rectangular shape provided with a central bore 7 and a fixing collar 8 by clamping on the stripped part of the electric wire 4.
  • connection terminal firstly comprises a connection pad 9, of rectangular shape, which is fixed for example by force engagement or by any other means in the bottom of a cell. 10 practiced in a body 11 of insulating material.
  • this central bore 12 could be smooth and arranged in line with a tapped hole provided in the body 11 or produced by a nut secured to the body 11. In both cases, the length of the tapping must be sufficient for the number of threads in engagement allows effective tightening of connections.
  • clamping screw 13 is equipped with an elastic stirrup 14 and of curved shape, mounted captively under the head 15 of the screw 13 (between head 15 and thread 16).
  • This screw 13 is also screwed before its engagement in the connection area 9 in the threaded bore 18 of a stirrup plate 19 of rectangular shape, made of a thin and slightly elastic sheet.
  • the means for retaining the assembly constituted by the screw 13 and the stirrup 14 consist of two tongues 20, 21 extending, at right angles, the stirrup plate 19 in two diametrically opposite locations, adjacent to two opposite angles of said stirrup plate 19.
  • These two tabs 20, 21 comprise at their end, at a determined distance from the stirrup plate 19, a part 22, 23 folded at right angles which extends in the direction of the screw 13, as far as the passage volume of the stirrup 14.
  • the ends of these two tongues 22, 23 are cut in a circle 24 coaxial with the threaded bore 18 and which has a radius slightly greater than that of the head 15 of the screw 13.
  • the cell 10 further comprises, at its opening, a narrowing formed as a whole or constituted by an attached element such as a terminal cover cap 26.
  • This narrowing makes it possible to maintain the assembly formed by the screw 13, the stirrup 14, the plate 19 and the tongues 20, 21 inside the cell 10 while allowing it a predetermined axial play j.
  • FIGs 6 to 9 illustrate the operation of the terminal previously described.
  • the screw in the released position is released from the thread 12 of the connection pad 9, but is however engaged in the caliper plate 19.
  • the caliper 14 comes in abutment against the folded parts at right angles 22, 23 of the tongues 20, 21, so that the screw 13 is immobilized.
  • the height of the thread of the screw 13 must be substantially equal to the distance separating the stirrup plate 19 from the folded parts at right angles 22, 23.
  • an appreciable advantage of the invention consists in that it is possible to deliver the terminals in this loose state, so as to avoid the user an additional operation. Indeed, until now, to avoid losing the screws, the terminals were always delivered in the tightened state.
  • FIG. 7 illustrates the clearance j which the assembly formed by the screw 13, the stirrup 14, the stirrup plate 19 and the tongues 20, 21 possesses, when the terminal is in the loose state.
  • the screw 13 is screwed, screwing during which the screw 13 passes through the bore 7 of the terminal 6 and is screwed into the threaded bore 12 of the connection pad 9. Note that this screwing takes place without difficulty because the screw 13 which is guided by the stirrup plate 19, is rigorously in the axis of the threaded bore 12 of the connection pad 9. During all the screwing, the relative distance between plate 19 and track 9 remains constant and equal to the thickness of the terminals 6.
  • the caliper plate 19 emerges from the thread (under-head part 15 of the screw 13) and the tightening is provided between the connection pad 9 and the captive clip 14, the plate ette-caliper 19 playing only a role of force distribution washer (position shown in Figure 9).
  • the elasticity of the caliper plate 19 and of the caliper 14 exerts on the screw 13 a tensile force allowing the threading of the caliper plate 19 to be re-engaged on the wash thread 13.
  • the stirrup plates may consist, for example, as shown in FIG. 11, in a single lateral tab 33, extending, at right angles, the stirrup plate 19 and provided with a return 34 extending in the passage volume of the stirrup .
  • the tongue 33 is adjacent to an angle of the stirrup plate 19. It is clear however that this tongue could just as easily extend from a central zone on one side of the stirrup plate.
  • the retaining means comprise two tongues 35, 36 each provided with a return 37, 38 extending in the passage volume of the stirrup 14. These two tongues 35, 36 are perpendicular to the stirrup plate 19 and are respectively adjoining two central zones on two opposite sides of said stirrup plate 19.
  • the stirrup 14 comprises, projecting from its upper face, two pairs of bosses 40, 41 , 42, 43 ensuring its lateral retention when it is in abutment on the returns 37, 38 of the tongues 35, 36.
  • the retaining means may further comprise, as shown in FIG. 13, two diametrically opposed tongues 44, 45, adjacent to two opposite angles of the stirrup plate 19 and perpendicular thereto, the ends of which have two returns 46, 47, for example obtained by cutting, which extend in the plane of the tongues 44, 45, parallel to the stirrup plate 19.
  • the captive stirrup 14 has a rectangular shape of width substantially equal to the distance separating the outer faces of the two tongues 44, 45 and is provided with two diametrically opposite rectangular cutouts 48, 49 for the passage of said tongues 44, 45. This arrangement makes it possible at the same time to guide the stirrup 14 along the tongues 44, 45.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Multi-Conductor Connections (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Claims (7)

1. Sich nicht lösende Universalklemme zur Realisierung von elektrischen Quetschverbindungen zwischen zwei leitenden Elementen, mit einer Anschlussfläche (9), die sich auf dem Grund einer Vertiefung (10) in einem Körper aus Isoliermaterial befindet und einer zentralen Bohrung (12) die ersten Schraubverbindungsmitteln zugeordnet ist, einer Klemmschraube (13), die durch besagte Bohrung (12) hindurchreichen und in besagte erste Schraubverbindungsmittel eingeschraubt werden soll, einem Bügel (14), durch den besagte schraube (13) hindurchreicht und einer beweglichen Einheit, bestehend aus einer Bügelplatte (19), die mit zweiten Schraubverbindungsmitteln versehen ist, in welche die schraube (13) eingeschraubt wird und Haltemitteln mit mindestens einem als Stop für besagten Bügel (14) dienendem Teil (22, 23), dadurch gekennzeichnet dass :
der Bügel (14) nicht lösbar unter dem Schrauben (13) kopf (15) angebracht ist,
die bewegliche Einheit im Inneren der Vertiefung (10) geführt wird,
die zweiten Schraubverbindungsmittel aus einer Gewindebohrung (18) in der Bügelplatte (19) bestehen,
die Haltemittel sich entlang der der Verbindungsfläche (9) entgegengesetzten Seite der Bügelplatte (19) erstrecken und so angelegt sind, dass, wenn die Schraube (13) aus der Verbindungsfläche (9) ausgeschraubt ist, der Bügel (14) auf den Haltemitteln aufliegt und, zugleich mit der Führung der beweglichen Einheit innerhalb der Vertiefung (10), die Schraube (13) in der Achse der Bohrung (12) der Verbindungsfläche (9) hält unabhängig von der Position der beweglichen Einheit innerhalb der Vertiefung (10).
2. Klemme nach Anspruch 1, dadurch gekennzeichnet, dass besagte Vertiefung (10) eine verengte Öffnung hat, damit die von der Schraube (13) der Verbindungsplatte (19) und den Haltemitteln gebildete Einheit nicht herausgleiten kann.
3. Unlösbare Klemme nach Anspruch 1 dadurch gekennzeichnet, dass die Klemmschraube (13) zwischen dem Kopf und dem Gewinde einen lichten Abstand besitzt, mittels dessen die Bügelplatte (19) sich am Ende des Schraubprozesses vom Gewinde der Schraube (13) löst und dass die Bügelplatte (19) eine gewisse Elastizität besitzt, sodass bei Beginn der Ausschraubung diese Elastizität auf die Schraube (13) eine Zugkraft ausübt, welche es ermöglicht, dass das Innengewinde der Bügelplatte (19) sich wieder mit dem Gewinde der Schraube (13) verschraubt.
4. Klemme nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der lichte Abstand h unter dem Kopf im Verhältnis zum Gewinde der Schraube (13) geringfügig die Dicke der Bügelplatte (19) übersteigt.
5. Klemme nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die der Bügelplatte (19) zugeordneten Haltemittel mindestens aus einer seitlichen Verlängerung (20, 21) der besagten Bügelplatte (19) bestehen, die sich im wesentlichen rechtwinklig nach oben erstreckt und an ihrem Ende einen nach rückwärts gebogenen Teil (22, 23) aufweist, der in den Durchgangsraum des Bügels (14) hineinreicht, um so seine axiale Bewegung am Ende der Ausschraubung zu begrenzen, wenn die Schraube (13) sich vom Gewinde der Verbindungsfläche (9) gelöst hat.
6. Klemme nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Bügelplatte (19) zwei seitliche, diametral entgegengesetzte, Verlängerungen (20, 21) aufweist, die rechtwinklig in die Höhe reichen und die Form eines U bilden, dessen beide Enden nach innen gebogen sind und teilweise in die Durchgangszone des Bügels hineinreichen.
7. Klemme nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass zu besagter Bügelplatte (19) zwei diametral entgegengesetzte Lamellen (44, 45) gehören, die sich senkrecht zu besagter Bügelplatte (19) erstrecken und deren Enden zwei rückwärts gebogene Teile (46, 47) besitzen, die sich in der Ebene der Lamellen (44, 45) parallel zu besagter Bügelplatte (19) erstrecken, und dass der Bügel (14) zwei entsprechende diametral entgegengesetzte Ausschnitte für den Durchgang besagter Lamellen (44, 45) besitzt.
EP84402493A 1983-12-30 1984-12-05 Sich nicht lösende Universalklemme zur Realisierung von elektrischen Quetschverbindungen zwischen zwei leitenden Elementen Expired EP0148056B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84402493T ATE29630T1 (de) 1983-12-30 1984-12-05 Sich nicht loesende universalklemme zur realisierung von elektrischen quetschverbindungen zwischen zwei leitenden elementen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8321084A FR2557739B1 (fr) 1983-12-30 1983-12-30 Borne imperdable universelle destinee a la realisation de connexions electriques par serrage entre deux elements conducteurs
FR8321084 1983-12-30

Publications (3)

Publication Number Publication Date
EP0148056A2 EP0148056A2 (de) 1985-07-10
EP0148056A3 EP0148056A3 (en) 1985-08-07
EP0148056B1 true EP0148056B1 (de) 1987-09-09

Family

ID=9295750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84402493A Expired EP0148056B1 (de) 1983-12-30 1984-12-05 Sich nicht lösende Universalklemme zur Realisierung von elektrischen Quetschverbindungen zwischen zwei leitenden Elementen

Country Status (9)

Country Link
US (1) US4611876A (de)
EP (1) EP0148056B1 (de)
JP (1) JPS60158567A (de)
AT (1) ATE29630T1 (de)
BR (1) BR8406720A (de)
CA (1) CA1227843A (de)
DE (1) DE3466140D1 (de)
FR (1) FR2557739B1 (de)
HK (1) HK33488A (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2611995B1 (fr) * 1987-03-05 1993-05-07 Telemecanique Electrique Dispositif de raccordement a vis pour conducteur electrique
CH672967A5 (de) * 1987-03-27 1990-01-15 Sprecher & Schuh Ag
YU48110B (sh) * 1990-05-02 1997-03-07 Naimer Hubert Laurenc Vijčana spojnica
FR2667989B1 (fr) * 1990-10-16 1994-03-04 Telemecanique Sa Borne de connexion a vis imperdable et bornier utilisant des bornes de ce genre.
US5747741A (en) * 1995-06-16 1998-05-05 Hubert Laurenz Naimer Screw terminal for an electrical connection of cables or wires
US5647613A (en) * 1995-08-15 1997-07-15 Thomas & Betts Corporation Connector for retentively terminating electrical conduit
USD381630S (en) * 1995-11-08 1997-07-29 Wpfy, Inc. Duplex cable connector
USD380197S (en) * 1996-01-30 1997-06-24 AFC Cable Systems, Inc. Cable connector
US7097502B2 (en) * 2003-05-13 2006-08-29 Tyco Electronics Corporation Terminal block assembly
TW201036278A (en) * 2009-03-27 2010-10-01 Furutech Co Ltd Stereo wire connector
DE102016122852A1 (de) * 2016-11-28 2018-05-30 Abb Schweiz Ag Installationsschaltgerät mit Kontaktklemme
AU2021101027A4 (en) * 2021-02-24 2021-04-29 Sicame Australia Pty Ltd A reusable mains-power electrical connector

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2397102A (en) * 1942-10-28 1946-03-26 Westinghouse Electric Corp Terminal block
US3083348A (en) * 1959-07-09 1963-03-26 Edmond C Crowther Electrical connector
DE1225727B (de) * 1964-03-24 1966-09-29 Siemens Ag Flachklemme zum Anschluss elektrischer Leitungen
US3238495A (en) * 1964-04-17 1966-03-01 Illinois Tool Works Electrical connector
US3260989A (en) * 1964-08-27 1966-07-12 Curtis Dev & Mfg Co Captivated screw
GB1154178A (en) * 1966-03-10 1969-06-04 Telemecanique Electrique Improvements in or relating to Electrical Connection Terminals
DE2452091C3 (de) * 1974-11-02 1979-01-11 Danfoss A/S, Nordborg (Daenemark) Vorrichtung zum Festklemmen miteinander elektrisch zu verbindender Leiter
GB1493220A (en) * 1976-10-12 1977-11-30 Pye Ltd Screw or nut and a washer intended to be held captive thereon
FR2432779A1 (fr) * 1978-08-02 1980-02-29 Mars Actel Reglette de raccordement
SU815801A1 (ru) * 1979-01-18 1981-03-23 Рижский Опытный Завод Средствмеханизации Присоединительный зажим дл пРОВОдОВ
US4273408A (en) * 1979-02-21 1981-06-16 General Electric Company Terminal block assembly

Also Published As

Publication number Publication date
EP0148056A3 (en) 1985-08-07
BR8406720A (pt) 1985-10-22
FR2557739A1 (fr) 1985-07-05
US4611876A (en) 1986-09-16
EP0148056A2 (de) 1985-07-10
HK33488A (en) 1988-05-13
DE3466140D1 (en) 1987-10-15
ATE29630T1 (de) 1987-09-15
FR2557739B1 (fr) 1986-05-02
JPS60158567A (ja) 1985-08-19
JPH0426186B2 (de) 1992-05-06
CA1227843A (fr) 1987-10-06

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