EP0322584A2 - Contact disc for an electrical conductor - Google Patents

Contact disc for an electrical conductor Download PDF

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Publication number
EP0322584A2
EP0322584A2 EP88119969A EP88119969A EP0322584A2 EP 0322584 A2 EP0322584 A2 EP 0322584A2 EP 88119969 A EP88119969 A EP 88119969A EP 88119969 A EP88119969 A EP 88119969A EP 0322584 A2 EP0322584 A2 EP 0322584A2
Authority
EP
European Patent Office
Prior art keywords
clamping
steps
inner edges
contact disc
curvature
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
EP88119969A
Other languages
German (de)
French (fr)
Other versions
EP0322584B1 (en
EP0322584A3 (en
Inventor
Werner Cordt
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.)
E Winkemann & Co KG GmbH
Original Assignee
E Winkemann & Co KG GmbH
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 E Winkemann & Co KG GmbH filed Critical E Winkemann & Co KG GmbH
Publication of EP0322584A2 publication Critical patent/EP0322584A2/en
Publication of EP0322584A3 publication Critical patent/EP0322584A3/en
Application granted granted Critical
Publication of EP0322584B1 publication Critical patent/EP0322584B1/en
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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/44—Clamping areas on both sides of screw

Definitions

  • the invention relates to a connecting disk for electrical conductor wires, the rectangular connecting disk having a transverse curvature and a central passage for the connecting screw.
  • Such terminal washers are used to connect one or more conductor wires.
  • the connecting washer is made of a metal, also a non-ferrous metal, and its shape is intended to provide maximum security, in particular long-term security of the electrical connection. Unintentional disconnection should be switched off. The pressure force for the conductor connection should remain unchanged for a long time.
  • a common embodiment of such a connecting washer is described in DIN 46288.
  • the clamping surfaces of this connecting washer are flat.
  • Special designs with embossed beads are problematic because the high deformation when embossing the beads can destroy the metal structure, so that the connecting disk can break later.
  • the beads with their comparatively coarse profile result in poor clamping, because the contact with the conductor may only be punctiform.
  • the object of the invention is to increase the security against jamming and to ensure the permanent clamping effect on an end plate of the type described.
  • embossing steps are provided in the corner areas, the inner edges of which are pressed against the axis of curvature, that the distance between the inner edges of the embossing steps is smaller than the diameter of the shaft of the connection is screw and that the clamping surfaces of the embossing steps have a corrugation.
  • the invention differs from the prior art in that the embossing steps ensure flat clamping.
  • the embossing steps are almost flat and aligned with each other, so that even thin conductor wires can be securely clamped.
  • the embossing steps also prevent a guide wire from being pushed away in the area of the shaft of the connecting screw and from receiving no clamping force.
  • the strongly arched upper side ensures that the connecting disk is adjusted to different diameters of the conductor wires.
  • the embossing steps make it easier to insert the conductor wires.
  • the corrugation increases the clamping effect.
  • a secure and permanent clamping is achieved in that the clamping surfaces of the embossing stages have a flatter curvature than the connecting disk. So you combine the advantage of a flat clamping surface with the advantage of an automatic adjustment of the curved top of the connecting disc to different thicknesses of the conductor wires.
  • a connecting disk 1 is an embossed part made of a rectangular blank, as can be seen in particular in FIG. 3.
  • the connecting disk has a central passage 2 for a connecting screw 3.
  • the connecting disc 1 has a transverse curvature, that is, a curvature perpendicular to the long side.
  • the connecting washer is not curved in the longitudinal direction.
  • the four corner areas have embossing steps 4, the inner edges 5 of the embossing steps 4 being pressed in against the curvature axis. It is thereby achieved that the clamping surfaces 6 of the embossing stages have a flatter curvature than the connecting disk as a whole, as can be seen in particular from FIG. 1. In addition, the clamping surfaces are 6th roughened by corrugation 7, as can be seen from FIG. 6. The distance between the inner edges 5 of the embossing steps 4 is smaller than the diameter of the shaft 8 of a connecting screw 3.
  • FIG. 4 shows the use of the connecting disk 1 for clamping a conductor wire 9.
  • FIG. 5 shows the use of the connecting disk for clamping conductor wires 9 and 10 of different diameters. It can be seen that the connecting disk is always inclined to the required extent. This is possible due to the fact that the transversely curved connecting disk is adjusted relative to the shaft 8 of the connecting screw 3. The clamping surfaces always protrude into the area of the shaft of the connecting screw 3. As a result, the conductor wires 9 and 10 are always between the clamping surface and a connecting leg 11.
  • the corrugation 7 ensures a secure and flat clamping.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Abstract

A contact disc for electrical conductor wires, the rectangular contact disc having a transverse bulge and a central passage for the contact screw. The technical problem is an increase in the clamping security and securing of the permanent clamping effect on a contact disc of the type described. In the corner regions, stamped steps (4) are provided whose inner edges (5) are pressed in against the dome axis. The spacing of the inner edges (5) of the stamped steps (4) is smaller than the diameter of the shank (8) of the contact screw (3) and the clamping surface (6) of the stamped steps (4) have a corrugation (7). <IMAGE>

Description

Die Erfindung betrifft eine Anschlußscheibe für elektrische Lei­terdrähte, wobei die rechteckige Anschlußscheibe eine Querwölbung und einen mittigen Durchgang für die Anschlußschraube aufweist.The invention relates to a connecting disk for electrical conductor wires, the rectangular connecting disk having a transverse curvature and a central passage for the connecting screw.

Derartige Anschlußscheiben werden zum Anschluß eines oder mehre­rer Leiterdrähte eingesetzt. Die Anschlußscheibe besteht aus einem Me­tall, auch einem Nichteisenmetall und soll durch ihre Formgebung ein Höchstmaß an Sicherheit, insbesondere Langzeitsicherheit der elektri­schen Verbindung geben. Ein ungewolltes Lösen der Verbindung soll aus­geschaltet sein. Die Druckkraft für den Leiteranschluß soll langdau­ernd unverändert bleiben.Such terminal washers are used to connect one or more conductor wires. The connecting washer is made of a metal, also a non-ferrous metal, and its shape is intended to provide maximum security, in particular long-term security of the electrical connection. Unintentional disconnection should be switched off. The pressure force for the conductor connection should remain unchanged for a long time.

Eine verbreitete Ausführungsform einer solchen Anschlußscheibe ist in DIN 46288 beschrieben. Die Klemmflächen dieser Anschlußscheibe sind eben. Sonderausführungen mit eingeprägten Sicken sind problema­tisch, da die hohe Verformung beim Einprägen der Sicken das Metallge­füge zerstören kann, so daß die Anschlußscheibe später brechen kann. Außerdem ergeben die Sicken mit ihrem vergleichsweise groben Profil eine schlechte Anklemmung, weil der Kontakt mit dem Leiter unter Um­ständen nur punktförmig ist.A common embodiment of such a connecting washer is described in DIN 46288. The clamping surfaces of this connecting washer are flat. Special designs with embossed beads are problematic because the high deformation when embossing the beads can destroy the metal structure, so that the connecting disk can break later. In addition, the beads with their comparatively coarse profile result in poor clamping, because the contact with the conductor may only be punctiform.

Aufgabe der Erfindung ist eine Erhöhung der Klemmsicherheit und eine Sicherung der Dauerklemmwirkung an einer Abschlußscheibe der beschriebenen Art.The object of the invention is to increase the security against jamming and to ensure the permanent clamping effect on an end plate of the type described.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß in den Eckbereichen Prägestufen vorgesehen sind, deren Innenkanten gegen die Wölbungsachse hin eingedrückt sind, daß der Abstand der Innenkanten der Prägestufen kleiner als der Durchmesser des Schaftes der Anschluß­ schraube ist und daß die Klemmflächen der Prägestufen eine Riffelung aufweisen.This object is achieved according to the invention in that embossing steps are provided in the corner areas, the inner edges of which are pressed against the axis of curvature, that the distance between the inner edges of the embossing steps is smaller than the diameter of the shaft of the connection is screw and that the clamping surfaces of the embossing steps have a corrugation.

Die Erfindung unterscheidet scih insofern vom Stand der Technik, als die Prägestufen eine flächige Klemmung sicherstellen. Die Präge­stufen sind nahezu eben und fluchten miteinander, so daß auch dünne Leiterdrähte sicher eingeklemmt werden. Die Prägestufen verhindern auch, daß ein Leitrdraht im Bereich des Schaftes der Anschlußschraube weggedrückt wird und keine Klemmkraft erhält. Die stark gewölbte Ober­seite sichert eine Einstellung des Anschlußscheibe bei unterschiedli­chen Durchmessern der Leiterdrähte. Das Einschieben der Leiterdrähte ist durch Die Prägestufen erleichtert. Die Riffelung erhöht die Klemm­wirkung.The invention differs from the prior art in that the embossing steps ensure flat clamping. The embossing steps are almost flat and aligned with each other, so that even thin conductor wires can be securely clamped. The embossing steps also prevent a guide wire from being pushed away in the area of the shaft of the connecting screw and from receiving no clamping force. The strongly arched upper side ensures that the connecting disk is adjusted to different diameters of the conductor wires. The embossing steps make it easier to insert the conductor wires. The corrugation increases the clamping effect.

Eine sichere und dauerhafte Klemmung wird dadurch erreicht, daß die Klemmflächen der Prägestufen eine flachere Wölbung als die An­schlußscheibe haben. So verbindet man den Vorteil einer ebenen Klemm­fläche mit dem Vorteil einer selbsttätigen Einstelllung der gewölbten Oberseite der Anschlußscheibe auf unterschiedliche Stärken der Leiter­drähte.A secure and permanent clamping is achieved in that the clamping surfaces of the embossing stages have a flatter curvature than the connecting disk. So you combine the advantage of a flat clamping surface with the advantage of an automatic adjustment of the curved top of the connecting disc to different thicknesses of the conductor wires.

Eine Ausführungsform der Erfindung wird im folgenden unter Bezug­nahme auf die anliegende Zeichnung beschreiben, in der darstellen:

  • Fig. 1 eine Vorderansicht einer Anschlußscheibe,
  • Fig. 2 eine Seitenansicht zu Fig. 1,
  • Fig. 3 eine Draufsicht zu Fig. 1,
  • Fig. 4 einem Klemmanschluß im Einbauzustand mit einem Leiter­draht,
  • Fig. 5 einen Klemmanschluß im Einbauzustand mit zwei verschie­denen Leiterdrähten und
  • Fig. 6 eine Ansicht der Klemmscheibe von unten in Richtung A.
An embodiment of the invention will now be described with reference to the accompanying drawings, in which:
  • 1 is a front view of a connecting washer,
  • 2 is a side view of FIG. 1,
  • 3 is a plan view of FIG. 1,
  • 4 a terminal connection in the installed state with a conductor wire,
  • Fig. 5 shows a terminal connection in the installed state with two different conductor wires and
  • 6 is a view of the clamping disc from below in the direction A.

Eine Anschlußscheibe 1 ist ein Prägeteil aus einem rechteckigen Zuschnitt, wie man insbesondere der Fig. 3 entnehmen kann. Die An­schlußscheibe weist zentral einem Durchgang 2 für eine Anschlußschrau­be 3 auf. Die Anschlußscheibe 1 besitzt eine Querwölbung, das heißt, eine Wölbung senkrecht zur Längsseite. In Längsrichtung ist die An­schlußscheibe nicht gewölbt.A connecting disk 1 is an embossed part made of a rectangular blank, as can be seen in particular in FIG. 3. The connecting disk has a central passage 2 for a connecting screw 3. The connecting disc 1 has a transverse curvature, that is, a curvature perpendicular to the long side. The connecting washer is not curved in the longitudinal direction.

Die vier Eckbereiche weisen Prägestufen 4 auf, wobei die Innen­kanten 5 der Prägestufen 4 gegen die Wölbungsachse hin eingedrückt sind. Dadurch erreicht man, daß die Klemmflächen 6 der Prägestufen eine flachere Wölbung als die Anschlußscheibe insgesamt haben, wie man insbesondere aus Fig. 1 ersieht. Außerdem sind die Klemmflächen 6 durch eine Riffelung 7 aufgerauht, wie man aus Fig. 6 erkennt. Der Abstand der Innenkanten 5 der Prägestufen 4 ist kleiner als der Durch­messer des Schaftes 8 einer Anschlußschraube 3.The four corner areas have embossing steps 4, the inner edges 5 of the embossing steps 4 being pressed in against the curvature axis. It is thereby achieved that the clamping surfaces 6 of the embossing stages have a flatter curvature than the connecting disk as a whole, as can be seen in particular from FIG. 1. In addition, the clamping surfaces are 6th roughened by corrugation 7, as can be seen from FIG. 6. The distance between the inner edges 5 of the embossing steps 4 is smaller than the diameter of the shaft 8 of a connecting screw 3.

Diese Ausbildung der Prägestufen mit vergleichsweise flachen, im wesentlichen ebenen Klemmflächen stellt eine feste Anklemmung von Lei­terdrähten unterschiedlichen Durchmessers sicher. Dadurch, daß der Abstand der Innenkanten 5 kleiner als der Durchmesser des Schaftes 8 der Anschlußschraube ist, ist auch sichergestellt, daß der Leiter­draht 9, 10 nicht neben der Innenkante vorbeilaufen kann. Auch bei Schrägstellung der Anschlußscheibe ist immer eine sichere Anklemmung selbst eines dünnen Leiterdrahtes gewährleistet.This design of the embossing stages with comparatively flat, essentially flat clamping surfaces ensures firm clamping of conductor wires of different diameters. The fact that the distance between the inner edges 5 is smaller than the diameter of the shaft 8 of the connecting screw also ensures that the conductor wire 9, 10 cannot run past the inner edge. Even when the connecting washer is inclined, even a thin conductor wire is always securely attached.

Fig. 4 zeigt die Verwendung der Anschlußscheibe 1 zum Klemmen eines Leiterdrahtes 9. Fig. 5 zeigt die Verwendung der Anschlußschei­be zum Klemmen von Leiterdrähten 9 und 10 unterschiedlichen Durchmes­sers. Man erkennt, daß sich die Anschlußscheibe immer in dem erforder­lichen Ausmaß schrägstellt. Dieses ist dadurch möglich, daß die quer­gewölbte Anschlußscheibe sich gegenüber dem Schaft 8 der Anschluß­schraube 3 verstellt. Die Klemmflächen ragen immer in den Bereich des Schaftes der Anschlußschraube 3 hinein. Infolgedessen liegen die Lei­terdrähte 9 und 10 immer zwischen der Klemmfläche und einem Anschluß­schenkel 11. Die Riffelung 7 gewährleistet eine sichere und flächige Klemmung. Dadurch, daß die Wölbung der Klemmflächen 6 flacher als die Wölbung der Anschlußscheibe 1 ist, wird erreicht, daß beim Klemmen der Leiterdrähte 9 und 10 keine unzulässig großen Querkräfte auftre­ten, die zu einer Verschiebung der Leiterdrähte führen könnten. Infol­ge der stärkeren Wölbung der Oberseite der Anschlußscheibe 1 kann sich die Anschlußscheibe immer in genügendem Ausmaß auf dem Schaft 8 der Anschlußschraube 3 verstellen, so daß eine sichere Anklemmung gewährleistet ist.FIG. 4 shows the use of the connecting disk 1 for clamping a conductor wire 9. FIG. 5 shows the use of the connecting disk for clamping conductor wires 9 and 10 of different diameters. It can be seen that the connecting disk is always inclined to the required extent. This is possible due to the fact that the transversely curved connecting disk is adjusted relative to the shaft 8 of the connecting screw 3. The clamping surfaces always protrude into the area of the shaft of the connecting screw 3. As a result, the conductor wires 9 and 10 are always between the clamping surface and a connecting leg 11. The corrugation 7 ensures a secure and flat clamping. Characterized in that the curvature of the clamping surfaces 6 is flatter than the curvature of the connecting disk 1, it is achieved that no unacceptably large transverse forces occur when clamping the conductor wires 9 and 10, which could lead to a displacement of the conductor wires. As a result of the greater curvature of the upper side of the connecting disk 1, the connecting disk can always be adjusted to a sufficient extent on the shaft 8 of the connecting screw 3, so that a secure clamping is ensured.

Claims (2)

1. Anschlußscheibe für elektrische Leiterdrähte, wobei die recht­eckige Anschlußscheibe eine Querwölbung und einen mittigen Durchgang für die Anschlußschraube aufweist, dadurch gekennzeichnet, daß in den Eckbereichen Prägestufen (4) vorgesehen sind, deren Innenkanten (5) gegen die Wölbungsachse hin eingedrückt sind, daß der Abstand der In­nenkanten (5) der Prägestufen (4) kleiner als der Durchmesser des Schaftes (8) der Anschlußschraube (3) ist und daß die Klemmflächen (6) der Prägestufen (4) eine Riffelung (7) aufweisen.1. Connection disc for electrical conductor wires, the rectangular connection disc having a transverse curvature and a central passage for the connecting screw, characterized in that embossing steps (4) are provided in the corner areas, the inner edges (5) of which are pressed in against the curvature axis, that the The distance between the inner edges (5) of the embossing steps (4) is smaller than the diameter of the shaft (8) of the connecting screw (3) and that the clamping surfaces (6) of the embossing steps (4) have corrugations (7). 2. Anschlußscheibe nach Anspruch 1, dadurch gekennzeichnet, daß die Klemmflächen der Prägestufen (4) eine flachere Wölbung als die An­schlußscheibe (1) haben.2. Terminal washer according to claim 1, characterized in that the clamping surfaces of the embossing steps (4) have a flatter curvature than the terminal washer (1).
EP19880119969 1987-12-24 1988-11-30 Contact disc for an electrical conductor Expired - Lifetime EP0322584B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8716943U 1987-12-24
DE8716943U DE8716943U1 (en) 1987-12-24 1987-12-24 Connection disc for electrical conductor wires

Publications (3)

Publication Number Publication Date
EP0322584A2 true EP0322584A2 (en) 1989-07-05
EP0322584A3 EP0322584A3 (en) 1990-05-09
EP0322584B1 EP0322584B1 (en) 1995-02-01

Family

ID=6815454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880119969 Expired - Lifetime EP0322584B1 (en) 1987-12-24 1988-11-30 Contact disc for an electrical conductor

Country Status (2)

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EP (1) EP0322584B1 (en)
DE (1) DE8716943U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9003514U1 (en) * 1990-03-26 1991-08-01 Siemens AG, 8000 München Electrical connection disc

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372366A (en) * 1966-10-24 1968-03-05 Fastron Co Fastening device
CH640086A5 (en) * 1979-01-24 1983-12-15 Feller Ag Method for producing a terminal claw for an electrical connecting terminal and terminal claw
US4310214A (en) * 1980-03-21 1982-01-12 Carlson William R Tiltable terminal clamp assembly

Also Published As

Publication number Publication date
EP0322584B1 (en) 1995-02-01
EP0322584A3 (en) 1990-05-09
DE8716943U1 (en) 1988-02-11

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