EP2153492B1 - Terminal point for connecting a ring terminal to an electrical device - Google Patents

Terminal point for connecting a ring terminal to an electrical device Download PDF

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Publication number
EP2153492B1
EP2153492B1 EP07722359.2A EP07722359A EP2153492B1 EP 2153492 B1 EP2153492 B1 EP 2153492B1 EP 07722359 A EP07722359 A EP 07722359A EP 2153492 B1 EP2153492 B1 EP 2153492B1
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EP
European Patent Office
Prior art keywords
terminal
screw
connecting piece
terminal point
clamping
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.)
Not-in-force
Application number
EP07722359.2A
Other languages
German (de)
French (fr)
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EP2153492A1 (en
Inventor
Manuel Geitner
Wolfgang Holmer
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.)
Siemens AG
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Siemens AG
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Publication date
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Publication of EP2153492A1 publication Critical patent/EP2153492A1/en
Application granted granted Critical
Publication of EP2153492B1 publication Critical patent/EP2153492B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12—End pieces terminating in an eye, hook, or fork
    • 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
    • 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
    • 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
    • H01R4/305—Clamped connections, spring connections utilising a screw or nut clamping member having means for facilitating engagement of conductive member or for holding it in position

Definitions

  • the invention relates to a terminal point for connecting a ring cable lug to an electrical device.
  • the contact element e.g. a contact tongue is in this case fixed in the housing of the electrical device.
  • the disadvantage is that the screw but must be removed from the junction, so the nip, i. Parts are removed from the system during the connection process.
  • the screw is usually not secured against loss; the fixing of the items without a holding housing is not possible.
  • the connection of the ring cable lug is difficult and is divided into many individual steps.
  • Object of the present invention is to improve a terminal point of an electrical device for a ring cable lug.
  • the invention is achieved by a clamping point for connecting a ring cable lug to an electrical device.
  • the clamping point comprises an electrically conductive connection piece, which has a device connection.
  • the connection piece can be connected to the other internal electrical wiring of the electrical device via the device connection.
  • the nip further contains a relative to the connector movable clamping device which serves to electrically contact the ring cable lug against a contact surface of the connector and thus produce a mechanically strong and electrically conductive connection between the ring lug and connector.
  • at least a part of the connecting piece is designed as a holding device.
  • the holding device serves to hold the clamping device captive on the connector.
  • the nip is a compact integral contact element and less expensive than known solutions.
  • the nip can therefore be prefabricated or stored as a separate component and can be used independently of the housing of the electrical device modular; So it can be used in any construction of an electrical device in any position without having to adapt to the captive to the terminal point.
  • Such a solution is space-saving and not previously known.
  • To clamp the ring cable lug no element of the clamping point need be removed from the terminal area and thus can not be lost, for example.
  • the nip allows quick and easy connection and is therefore user-friendly.
  • the connection of a ring cable lug consists of only two steps, namely 1. insert the ring cable lug into the connection or clamping area, 2. clamp the clamping device.
  • the nip can be designed so that the clamping device is detachable.
  • the clamping device can then be opened and closed as often as desired in order to connect or disconnect a ring cable lug on the electrical device.
  • the holding device may be an extension of the connecting piece, wherein the extension then at least partially comprises the clamping device.
  • the clamping device this is captive, e.g. in the manner of a cage or stop, held on the connector.
  • the holding device may comprise a stop, on which the screw head of the clamping screw rests when the clamping screw is released or abuts.
  • the clamping screw is then out of its firmly drawn position, in which it is held anyway, only as far unscrewed until it rests against the stop.
  • the clamping screw can pass through a hole in the connector.
  • the stop is then in the axial direction of the bore on the screw head facing side of the connector arranged.
  • the clamping screw is thus in the bore axially moved out only to the stop and is held permanently.
  • the stop for the clamping screw may be provided an opening for a tool engagement.
  • a suitable tool e.g. a screwdriver
  • the hole is located in the contact surface in order to align with the opening of the inserted ring cable lug.
  • the first flat side of the ring cable lug is usually applied to the contact point of the connection piece.
  • the clamping screw whose head is arranged on the opposite side of the contact surface of the contact carrier, then supported in the attached state on the contact carrier.
  • the screw engages with its thread not in the bore of the connector, but in a clamping element, which rests against the other flat side of the ring cable lug and thus clamps the ring cable lug between them and the contact surface by means of the clamping screw.
  • the clamping screw can project with its, the screw head end facing away from the connector when the screw abuts the stop.
  • the clamping screw protrudes then in the maximum retracted position still from the contact surface of the connecting piece and forms a detent pin for the central opening of the ring cable lug. So this can be e.g. simply be centered when inserting into the nip with respect to contact surface and clamping screw and the screw can be easily advanced through the opening to the clamping element or its thread.
  • the stop may be located at the end of an extension extending U-shaped away from the bore.
  • the eg strip-shaped or band-shaped contact element is then over the Contact surface addition, eg tongue-shaped, extended and bent in an L-shape, so that together with the bore-carrying portion of the contact carrier results in a U-shape.
  • the protruding usually through the center of the contact surface screw is fixed so captive.
  • the nip may include a spring disposed between the contact carrier and the screw head and biasing the clamping screw to its released position, e.g. presses against the stop. In the released state, the clamping screw thus does not block the clamping point and the ring cable lug can be inserted or removed unhindered.
  • the clamping screw may have a shoulder which adjoins the screw head and is supported on the connection piece when the clamping screw is tightened.
  • the clamping screw is therefore not in the tightened state me her screw head, but with the paragraph on.
  • the heel thus provides leeway to accommodate the compressed when tightened clamping screw spring, which then surrounds the paragraph.
  • the heel is thus longer in the longitudinal direction of the screw than the maximum compressed spring.
  • the clamping screw is thus supported securely by the shoulder and defined on the connector, and not on the compressed spring.
  • the spring can be dimensioned such that its inner diameter lies between the first and second diameters. The spring is thus centered by the heel, can not slide over the screw head and can surround the paragraph concentric with tightened clamping screw.
  • the clamping device may have a clamping plate for pressing the ring cable lug against the contact surface.
  • the clamping plate can then have an extension and at least a part of the connecting piece be designed so that it cooperates with the extension Holding means forms.
  • the clamping plate as a movable element is then held captive at the nip.
  • Such an extension may be T-shaped and the holding means be a behind the opening from the extension opening in the contact carrier.
  • the contact carrier may be in the form of a flat band which is bent, recessed or otherwise machined to realize one or more of the abovementioned holding devices.
  • FIG. 1 shows as an electrical device, a contactor 2 with a terminal 4 for a ring terminal 6, on which an external supply line, not shown, is crimped.
  • the terminal 4 comprises as a connecting piece a busbar or a contact carrier 8 and a captively attached to this clamping device 10.
  • the clamping device comprises a clamping plate as a threaded rail 12 and cooperating with this, via a coil spring 14 in the in FIG. 1 drawn opening position 16 prestressed clamping screw 18th
  • the entire terminal 4 is fixed in the contactor 2 with a fixing end 20 of the contact carrier 8, for example, shed therein.
  • a soldering point 22 is provided as the device connection, to which a device-internal connection line 24 is soldered in order to electrically connect the connection terminal 4 to the device interior.
  • FIG. 2 shows the holding portion 26a in the direction of arrows II-II again in detail.
  • the contact carrier 8 is provided with an opening 28 through which the threaded rail 12 extends with a narrower section 29.
  • the opening 28 is engaged behind by a T-shaped portion 30 in order not to remove the threaded rail 12 in the direction of the arrow 32 from the contact carrier 8 can.
  • the threaded rail 12 is tilted about an axis 34 by 90 °, so that the portion 30 can be inserted diagonally through the opening 28 against the arrow 32 in the contact carrier 8 and then about the axis 34 in the in FIG. 2 tilted shown end position. This creates the captive arrangement way.
  • the holding section 26a of the contact carrier 8 is adjoined by a contact section 36, which is bent by 90 ° relative thereto.
  • the contact carrier 8 on its the threaded rail 12 facing flat side on a contact surface 38, to which the ring cable lug 6 with its first flat side 40a can be applied.
  • a bore 42 in the contact carrier 8 is introduced, through which the clamping screw 18 projects without threaded engagement with its threaded portion 44.
  • a second holding portion connects 26b of the contact carrier 8, which forms by two right-angle bends together with the contact portion 36, a clamping screw 18 enclosing the U-shape.
  • the end 46 of the contact carrier 8 thus forms a stop 47 for the clamping screw 18.
  • the inside diameter d of the holding portion 26b is in fact dimensioned such that when the screw head 48 abuts the end 46 the screw with its threaded portion 44 is still held in the bore 42 and thus is not removable from this.
  • the clamping screw 18 When assembling the terminal 4, the clamping screw 18 is first inserted into the bore 42 of the at least incompletely bent contact carrier 8 and then the contact carrier 8 to his in FIG. 1 bent U-shape shown bent. In order to be able to engage with a screwdriver 50 in the screw head 48, an opening 52 is provided in the end 46 of the contact carrier 8.
  • a clamping screw 18 concentrically surrounding coil spring 14 and thus biases the clamping screw 18 in the in FIG. 1 shown opening position with its screw head 48 against the end 46 of the contact carrier 8 as a stop.
  • a small portion 56 of the clamping screw 18 protrudes beyond the contact surface 38 and forms a detent for the opening 58 of the ring cable lug 6, so that the opening 58 with the central longitudinal axis 16 of the clamping screw 18 and the bore 42 and the threaded hole 62 in the threaded rail 12 is aligned.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Description

Die Erfindung betrifft eine Klemmstelle zum Anschließen eines Ringkabelschuhs an ein elektrisches Gerät.The invention relates to a terminal point for connecting a ring cable lug to an electrical device.

Viele elektrische Geräte weisen Anschlussklemmen bzw. Klemmstellen für einen externen elektrischen Leiter auf. Bekannt ist, am Leiter ein Ringkabelschuh anzubringen und den Leiter vermittels des Ringkabelschuhs an der Klemmstelle anzuklemmen. Am Markt übliche Anschlusssysteme, also Klemmstellen für einen Ringkabelschuh bzw. einen Ringkabelanschluss sind heute im Wesentlichen aus einem Kontaktelement mit einem Gewinde und einer Schraube aufgebaut. Das Anschließen eines Ringkabelschuhs ist dabei in vier Anschlussschritte aufgeteilt: Die Schraube wird 1. aus dem Gewinde des Kontaktelements heraus gedreht - 2. in die Öffnung des Ringkabelschuhs eingelegt - 3. zusammen mit dem Ringkabelschuh dem Klemmbereich, also Kontaktelement bzw. dessen Gewinde zugeführt - 4. in das Gewinde des Kontaktelementes eingedreht und fest gezogen, so dass sie zwischen sich und dem Kontaktelement den Ringkabelschuh elektrisch kontaktierend verpresst.Many electrical devices have terminals or terminals for an external electrical conductor. It is known to attach a ring cable lug to the conductor and to clamp the conductor by means of the ring lug at the nip. Conventional connection systems on the market, ie clamping points for a ring cable lug or a ring cable connection, are today essentially constructed from a contact element with a thread and a screw. The connection of a ring cable lug is divided into four connection steps: 1. The screw is turned out of the thread of the contact element. 2. Inserted into the opening of the ring lug. 3. Together with the ring cable lug, it is fed to the clamping region, ie contact element or its thread. 4. screwed into the thread of the contact element and tightened so that it presses the ring cable lug electrically contacting between itself and the contact element.

Das Kontaktelement, z.B. eine Kontaktzunge ist hierbei im Gehäuse des elektrischen Geräts fixiert. Nachteilig ist, dass die Schraube aber von der Anschlussstelle, also der Klemmstelle entfernt werden muss, d.h. Teile werden beim Anschlussvorgang dem System entnommen. Die Schraube ist in der Regel nicht gegen Verlierbarkeit gesichert; das Fixieren der Einzelteile ohne ein haltendes Gehäuse ist nicht möglich. Das Anschließen des Ringkabelschuhs stellt sich erschwert dar und ist in viele Einzelschritte untergliedert.The contact element, e.g. a contact tongue is in this case fixed in the housing of the electrical device. The disadvantage is that the screw but must be removed from the junction, so the nip, i. Parts are removed from the system during the connection process. The screw is usually not secured against loss; the fixing of the items without a holding housing is not possible. The connection of the ring cable lug is difficult and is divided into many individual steps.

Aus der DE 103 04 480 A1 ist es bekannt, das Kontaktelement im Gehäuse zu fixieren, die Klemmschraube im Gehäuse zu fixieren und mit Hilfe der Klemmschraube wiederum eine Klemmhülse am Kontaktelement zu fixieren. Diese Lösung ist konstruktiv aufwendig und erfordert zum Halten der Einzelteile ein vorhandenes Gehäuse.From the DE 103 04 480 A1 It is known to fix the contact element in the housing, to fix the clamping screw in the housing and in turn a clamping sleeve with the aid of the clamping screw to fix on the contact element. This solution is structurally complex and requires to hold the items an existing housing.

Aus der DE 103 39 670 A1 ist es ebenfalls bekannt, Die Klemmschraube in einem im Gehäuse federnd geführten und in Axialrichtung der Schraube beweglichen Zusatzteil zu halten. Diese Lösung ist noch aufwendiger als die oben genannte, erfordert noch mehr Einzelteile und erfordert ebenfalls Gehäusekomponenten, um die Klemmstelle verliersicher auszugestalten.From the DE 103 39 670 A1 It is also known to hold the clamping screw in a resiliently guided in the housing and movable in the axial direction of the screw additional part. This solution is even more expensive than the above, requires even more items and also requires housing components to design the terminal point captive.

Das Dokument " DE 22 32 556 B1 " offenbart eine Klemmstelle gemäß dem Oberbegriff des Patentanspruchs 1.The document " DE 22 32 556 B1 discloses a nip according to the preamble of claim 1.

Aufgabe der vorliegenden Erfindung ist es, eine Klemmstelle eines elektrischen Gerätes für einen Ringkabelschuh zu verbessern.Object of the present invention is to improve a terminal point of an electrical device for a ring cable lug.

Die Erfindung wird gelöst durch eine Klemmstelle zum Anschließen eines Ringkabelschuhs an ein elektrisches Gerät. Die Klemmstelle umfasst ein elektrisch leitendes Anschlussstück, welches einen Geräteanschluss aufweist. Über den Geräteanschluss ist das Anschlussstück mit der weiteren internen elektrischen Verdrahtung des elektrischen Gerätes verbindbar. Die Klemmstelle enthält weiterhin eine relativ zum Anschlussstück bewegliche Klemmvorrichtung, welche dazu dient, den Ringkabelschuh an eine Kontaktfläche des Anschlussstückes elektrisch leitend anzupressen und damit eine mechanisch feste und elektrisch leitende Verbindung zwischen Ringkabelschuh und Anschlussstück herzustellen. Erfindungsgemäß ist zumindest ein Teil des Anschlussstückes als Haltevorrichtung ausgebildet. Die Haltevorrichtung dient dazu, die Klemmvorrichtung unverlierbar am Anschlussstück zu halten.The invention is achieved by a clamping point for connecting a ring cable lug to an electrical device. The clamping point comprises an electrically conductive connection piece, which has a device connection. The connection piece can be connected to the other internal electrical wiring of the electrical device via the device connection. The nip further contains a relative to the connector movable clamping device which serves to electrically contact the ring cable lug against a contact surface of the connector and thus produce a mechanically strong and electrically conductive connection between the ring lug and connector. According to the invention, at least a part of the connecting piece is designed as a holding device. The holding device serves to hold the clamping device captive on the connector.

Obschon die erfindungsgemäße Klemmstelle die Unverlierbarkeit sämtlicher Einzelteile sicherstellt, ist keine Gehäusekomponente hierfür notwendig. Die Klemmstelle ist ein kompaktes integrales Kontaktelement und kostengünstiger als bekannte Lösungen. Die Klemmstelle kann also als separates Bauelement bereits vorgefertigt bzw. bevorratet gehalten werden und ist unabhängig vom Gehäuse des elektrischen Gerätes modular ein-setzbar; kann also in jede Aufbauart eines elektrischen Gerätes in beliebiger Baulage eingesetzt werden ohne dieses auf die Unverlierbarkeit hin an die Klemmstelle anpassen zu müssen. Eine derartige Lösung ist platzsparend und bisher nicht bekannt. Zum Anklemmen des Ringkabelschuhs braucht auch kein Element der Klemmstelle aus dem Klemmenbereich entfernt zu werden und kann somit z.B. nicht verloren gehen. Die Klemmstelle erlaubt schnelles und einfacheres Anschließen und ist dadurch bedienerfreundlich. Das Anschließen eines Ringkabelschuhs besteht nur noch aus zwei Schritten, nämlich 1. den Ringkabelschuh in den Anschluss bzw. Klemmbereich einführen, 2. die Klemmvorrichtung festklemmen.Although the clamping point of the invention ensures the captivation of all items, no housing component is necessary for this. The nip is a compact integral contact element and less expensive than known solutions. The nip can therefore be prefabricated or stored as a separate component and can be used independently of the housing of the electrical device modular; So it can be used in any construction of an electrical device in any position without having to adapt to the captive to the terminal point. Such a solution is space-saving and not previously known. To clamp the ring cable lug, no element of the clamping point need be removed from the terminal area and thus can not be lost, for example. The nip allows quick and easy connection and is therefore user-friendly. The connection of a ring cable lug consists of only two steps, namely 1. insert the ring cable lug into the connection or clamping area, 2. clamp the clamping device.

Die Klemmstelle kann so ausgeführt sein, dass die Klemmvorrichtung lösbar ist. Die Klemmvorrichtung kann dann beliebig oft geöffnet und geschlossen werden, um einen Ringkabelschuh am elektrischen Gerät anzuschließen oder auch wieder abzuklemmen.The nip can be designed so that the clamping device is detachable. The clamping device can then be opened and closed as often as desired in order to connect or disconnect a ring cable lug on the electrical device.

Die Haltevorrichtung kann ein Fortsatz des Anschlussstücks sein, wobei der Fortsatz dann die Klemmvorrichtung zumindest teilweise umfasst. Durch das umfassen der Klemmvorrichtung wird diese unverlierbar, z.B. nach Art eines Käfigs oder Anschlags, am Anschlussstück gehalten.The holding device may be an extension of the connecting piece, wherein the extension then at least partially comprises the clamping device. By including the clamping device this is captive, e.g. in the manner of a cage or stop, held on the connector.

Wenn die Klemmvorrichtung eine Klemmschraube enthält, welche zum Anpressen des Ringkabelschuhs festziehbar ist, kann die Haltevorrichtung einen Anschlag umfassen, an welchem der Schraubenkopf der Klemmschraube bei gelöster Klemmschraube anliegt bzw. anschlägt. Die Klemmschraube ist dann aus ihrer fest gezogenen Position, in welcher sie ohnehin gehalten ist, nur soweit herausschraubbar, bis sie am Anschlag anliegt. So ist dann zwar der Ringkabelschuh entnehmbar bzw. einlegbar, aber die Klemmschraube nicht entfernbar bzw. verlierbar.If the clamping device includes a clamping screw which can be tightened to press the ring cable lug, the holding device may comprise a stop, on which the screw head of the clamping screw rests when the clamping screw is released or abuts. The clamping screw is then out of its firmly drawn position, in which it is held anyway, only as far unscrewed until it rests against the stop. Thus, although then the ring cable lug can be removed or inserted, but the clamping screw can not be removed or lost.

Bei einer derartigen Ausgestaltung kann die Klemmschraube eine Bohrung im Anschlussstück durchsetzen. Der Anschlag ist dann in Axialrichtung der Bohrung auf der dem Schraubenkopf zugewandten Seite des Anschlussstückes angeordnet. Die Klemmschraube ist also in der Bohrung axial nur bis zum Anschlag herausbewegbar und wird so dauerhaft gehalten.In such an embodiment, the clamping screw can pass through a hole in the connector. The stop is then in the axial direction of the bore on the screw head facing side of the connector arranged. The clamping screw is thus in the bore axially moved out only to the stop and is held permanently.

Im Anschlag für die Klemmschraube kann eine Öffnung für einen Werkzeugeingriff vorgesehen sein. Mit einem entsprechenden Werkzeug, z.B. einem Schraubendreher, kann so die Klemmschraube gedreht werden, ohne dass der Anschlag hierbei stört.In the stop for the clamping screw may be provided an opening for a tool engagement. With a suitable tool, e.g. a screwdriver, so the clamping screw can be rotated without the stop interferes with this.

In der Regel befindet sich die Bohrung in der Kontaktfläche, um mit der Öffnung des eingelegten Ringkabelschuhs zu fluchten. Bei einer derartigen Ausgestaltung einer Klemmstelle wird an der Kontaktstelle des Anschlussstückes in der Regel die erste Flachseite des Ringkabelschuhs angelegt. Die Klemmschraube, deren Kopf an der der Kontaktfläche gegenüberliegenden Seite des Kontaktträgers angeordnet ist, stützt sich dann im befestigten Zustand am Kontaktträger ab. Die Schraube greift hierbei mit ihrem Gewinde nicht in die Bohrung des Anschlussstückes, sondern in ein Klemmelement ein, welches an der anderen Flachseite des Ringkabelschuhs anliegt und somit den Ringkabelschuh zwischen sich und der Kontaktfläche mit Hilfe der Klemmschraube einspannt.As a rule, the hole is located in the contact surface in order to align with the opening of the inserted ring cable lug. In such an embodiment of a terminal point, the first flat side of the ring cable lug is usually applied to the contact point of the connection piece. The clamping screw, whose head is arranged on the opposite side of the contact surface of the contact carrier, then supported in the attached state on the contact carrier. The screw engages with its thread not in the bore of the connector, but in a clamping element, which rests against the other flat side of the ring cable lug and thus clamps the ring cable lug between them and the contact surface by means of the clamping screw.

Die Klemmschraube kann mit ihrem, dem Schraubenkopf abgewandten Ende über das Anschlussstück vorstehen, wenn die Schraube am Anschlag anliegt. Die Klemmschraube ragt dann auch in der maximal zurückgezogenen Position noch aus der Kontaktfläche des Anschlussstückes vor und bildet einen Raststift für die zentrale Öffnung des Ringkabelschuhs. So kann dieser z.B. beim Einlegen in die Klemmstelle bezüglich Kontaktfläche und Klemmschraube einfach zentriert werden und die Schraube leicht durch die Öffnung bis zum Klemmelement bzw. dessen Gewinde vorbewegt werden.The clamping screw can project with its, the screw head end facing away from the connector when the screw abuts the stop. The clamping screw protrudes then in the maximum retracted position still from the contact surface of the connecting piece and forms a detent pin for the central opening of the ring cable lug. So this can be e.g. simply be centered when inserting into the nip with respect to contact surface and clamping screw and the screw can be easily advanced through the opening to the clamping element or its thread.

Der Anschlag kann am Ende eines sich von der Bohrung U-förmig weg erstreckenden Fortsatzes angeordnet sein. Das z.B. streifenförmige bzw. bandförmige Kontaktelement ist dann über die Kontaktfläche hinaus, z.B. zungenförmig, verlängert und L-förmig umgebogen, so dass sich zusammen mit dem die Bohrung tragenden Abschnitt des Kontaktträgers eine U-Form ergibt. Die in der Regel durch das Zentrum der Kontaktfläche ragende Schraube ist so verliersicher fixiert.The stop may be located at the end of an extension extending U-shaped away from the bore. The eg strip-shaped or band-shaped contact element is then over the Contact surface addition, eg tongue-shaped, extended and bent in an L-shape, so that together with the bore-carrying portion of the contact carrier results in a U-shape. The protruding usually through the center of the contact surface screw is fixed so captive.

Die Klemmstelle kann eine Feder enthalten, welche zwischen Kontaktträger und Schraubenkopf angeordnet ist und die Klemmschraube in ihre gelöste Position vorspannt, also z.B. gegen den Anschlag drückt. Im gelösten Zustand blockiert damit die Klemmschraube die Klemmstelle nicht und der Ringkabelschuh kann ungehindert eingelegt bzw. entnommen werden.The nip may include a spring disposed between the contact carrier and the screw head and biasing the clamping screw to its released position, e.g. presses against the stop. In the released state, the clamping screw thus does not block the clamping point and the ring cable lug can be inserted or removed unhindered.

Hierbei kann die Klemmschraube einen Absatz aufweisen, welcher an den Schraubenkopf angrenzt und sich bei festgezogener Klemmschraube am Anschlussstück abstützt. Die Klemmschraube liegt also im festgezogenen Zustand nicht mir ihrem Schraubenkopf, sondern mit dem Absatz auf. Der Absatz bietet somit Spielraum, um die bei festgezogener Klemmschraube komprimierte Feder aufzunehmen, welche den Absatz dann umgibt. Der Absatz ist also in Längsrichtung der Schraube länger als die maximal komprimierte Feder. Die Klemmschraube stützt sich somit durch den Absatz sicher und definiert am Anschlussstück ab, und nicht über die komprimierte Feder.In this case, the clamping screw may have a shoulder which adjoins the screw head and is supported on the connection piece when the clamping screw is tightened. The clamping screw is therefore not in the tightened state me her screw head, but with the paragraph on. The heel thus provides leeway to accommodate the compressed when tightened clamping screw spring, which then surrounds the paragraph. The heel is thus longer in the longitudinal direction of the screw than the maximum compressed spring. The clamping screw is thus supported securely by the shoulder and defined on the connector, and not on the compressed spring.

Weist der Schraubenkopf einen ersten Durchmesser und der Absatz einen kleineren zweiten Durchmesser auf, kann die Feder so dimensioniert sein, dass deren Innendurchmesser zwischen erstem um zweitem Durchmesser liegt. Die Feder ist somit vom Absatz zentriert, kann nicht über den Schraubenkopf weg gleiten und kann bei festgezogener Klemmschraube den Absatz konzentrisch umgeben.If the screw head has a first diameter and the shoulder has a smaller second diameter, the spring can be dimensioned such that its inner diameter lies between the first and second diameters. The spring is thus centered by the heel, can not slide over the screw head and can surround the paragraph concentric with tightened clamping screw.

Wie bereits oben erwähnt, kann die Klemmvorrichtung eine Klemmplatte zum Anpressen des Ringkabelschuhs gegen die Kontaktfläche aufweisen. Die Klemmplatte kann dann einen Fortsatz aufweisen und zumindest ein Teil des Anschlussstückes so ausgebildet sein, dass dieser ein mit dem Fortsatz zusammenwirkendes Haltemittel bildet. Die Klemmplatte als bewegliches Element ist dann unverlierbar an der Klemmstelle gehalten.As already mentioned above, the clamping device may have a clamping plate for pressing the ring cable lug against the contact surface. The clamping plate can then have an extension and at least a part of the connecting piece be designed so that it cooperates with the extension Holding means forms. The clamping plate as a movable element is then held captive at the nip.

Ein derartiger Fortsatz kann T-förmig ausgeführt sein und das Haltemittel eine vom Fortsatz hintergriffene Öffnung im Kontaktträger sein.Such an extension may be T-shaped and the holding means be a behind the opening from the extension opening in the contact carrier.

Der Kontaktträger kann die Form eines flachen Bandes aufweisen, welches zur Realisierung einer oder mehrerer der oben genannten Haltevorrichtungen in verschiedener Weise gebogen, ausgespart oder anderweitig bearbeitet ist.The contact carrier may be in the form of a flat band which is bent, recessed or otherwise machined to realize one or more of the abovementioned holding devices.

Für eine weitere Beschreibung wird auf die Ausführungsbeispiele der Zeichnungen verwiesen. Es zeigen, jeweils in einer schematischen Prinzipskizze:

FIG 1
eine erfindungsgemäße Klemmstelle an einem elektrischen Gerät,
FIG 2
die Ansicht II-II aus FIG 1.
For a further description, reference is made to the embodiments of the drawings. They show, in each case in a schematic outline sketch:
FIG. 1
a clamping point according to the invention on an electrical device,
FIG. 2
View II-II FIG. 1 ,

FIG 1 zeigt als elektrisches Gerät einen Schaltschütz 2 mit einer Anschlussklemme 4 für einen Ringkabelschuh 6, an dem eine nicht dargestellte externe Zuleitung angequetscht ist. Die Anschlussklemme 4 umfasst als Anschlussstück eine Stromschiene bzw. einen Kontaktträger 8 und eine an diesem unverlierbar angebrachte Klemmvorrichtung 10. Die Klemmvorrichtung umfasst als Klemmplatte eine Gewindeschiene 12 und eine mit dieser zusammenwirkende, über eine Schraubenfeder 14 in der in FIG 1 gezeichneten Öffnungsposition 16 vorgespannte Klemmschraube 18. FIG. 1 shows as an electrical device, a contactor 2 with a terminal 4 for a ring terminal 6, on which an external supply line, not shown, is crimped. The terminal 4 comprises as a connecting piece a busbar or a contact carrier 8 and a captively attached to this clamping device 10. The clamping device comprises a clamping plate as a threaded rail 12 and cooperating with this, via a coil spring 14 in the in FIG. 1 drawn opening position 16 prestressed clamping screw 18th

Die gesamte Anschlussklemme 4 ist im Schaltschütz 2 mit einem Fixierende 20 des Kontaktträgers 8 befestigt, z.B. darin vergossen. Am Fixierende 20 ist als Geräteanschluss ein Lötpunkt 22 vorgesehen, an welchem eine geräteinterne Anschlussleitung 24 angelötet ist, um die Anschlussklemme 4 elektrisch mit dem Geräteinneren zu verbinden.The entire terminal 4 is fixed in the contactor 2 with a fixing end 20 of the contact carrier 8, for example, shed therein. At the fixing end 20, a soldering point 22 is provided as the device connection, to which a device-internal connection line 24 is soldered in order to electrically connect the connection terminal 4 to the device interior.

An das Fixierende 20 schließt sich am Kontaktträger 8 ein erster Halteabschnitt 26a an, in welchem die Gewindeschiene 12 gehalten ist. FIG 2 zeigt den Halteabschnitt 26a in Richtung der Pfeile II-II nochmals im Detail. Der Kontaktträger 8 ist mit einer Öffnung 28 versehen, durch welche die Gewindeschiene 12 mit einem schmäleren Abschnitt 29 hindurchreicht. Die Öffnung 28 ist hintergriffen von einem T-förmigen Abschnitt 30, um die Gewindeschiene 12 nicht in Richtung des Pfeils 32 aus dem Kontaktträger 8 entfernen zu können. Bei der Anfertigung der Anschlussklemme 4 wird die Gewindeschiene 12 um eine Achse 34 um 90° verkippt, damit der Abschnitt 30 diagonal durch die Öffnung 28 entgegen des Pfeils 32 in den Kontaktträger 8 eingeführt werden kann und sodann um die Achse 34 in die in FIG 2 gezeigte Endposition verkippt. Hierdurch entsteht die verliersicher Anordnungsweise.At the fixing end 20 connects to the contact carrier 8, a first holding portion 26 a, in which the threaded rail 12 is held. FIG. 2 shows the holding portion 26a in the direction of arrows II-II again in detail. The contact carrier 8 is provided with an opening 28 through which the threaded rail 12 extends with a narrower section 29. The opening 28 is engaged behind by a T-shaped portion 30 in order not to remove the threaded rail 12 in the direction of the arrow 32 from the contact carrier 8 can. In the preparation of the terminal 4, the threaded rail 12 is tilted about an axis 34 by 90 °, so that the portion 30 can be inserted diagonally through the opening 28 against the arrow 32 in the contact carrier 8 and then about the axis 34 in the in FIG. 2 tilted shown end position. This creates the captive arrangement way.

An den Halteabschnitt 26a des Kontaktträgers 8 schließt sich ein zu diesem um 90° gebogener Kontaktabschnitt 36 an. Im Kontaktabschnitt 36 weist der Kontaktträger 8 an seiner der Gewindeschiene 12 zugewandten Flachseite eine Kontaktfläche 38 auf, an welche der Ringkabelschuh 6 mit seiner ersten Flachseite 40a anlegbar ist. Im Bereich der Kontaktfläche 38 ist eine Bohrung 42 im Kontaktträger 8 eingebracht, durch welche die Klemmschraube 18 ohne Gewindeeingriff mit ihrem Gewindeabschnitt 44 hindurch ragt.The holding section 26a of the contact carrier 8 is adjoined by a contact section 36, which is bent by 90 ° relative thereto. In the contact section 36, the contact carrier 8 on its the threaded rail 12 facing flat side on a contact surface 38, to which the ring cable lug 6 with its first flat side 40a can be applied. In the area of the contact surface 38, a bore 42 in the contact carrier 8 is introduced, through which the clamping screw 18 projects without threaded engagement with its threaded portion 44.

An den Kontaktabschnitt 36 schließt sich ein zweiter Halteabschnitt 26b des Kontaktträgers 8 an, welcher durch zwei rechtwinklige Biegungen zusammen mit dem Kontaktabschnitt 36 eine die Klemmschraube 18 einschließende U-Form bildet. Das Ende 46 des Kontaktträgers 8 bildet somit einen Anschlag 47 für die Klemmschraube 18. Die lichte Weite d des Halteabschnitts 26b ist nämlich so bemessen, dass bei Anlage des Schraubenkopfes 48 am Ende 46 die Schraube mit ihrem Gewindeabschnitt 44 noch in der Bohrung 42 gehalten ist und somit aus dieser nicht entfernbar ist.At the contact portion 36, a second holding portion connects 26b of the contact carrier 8, which forms by two right-angle bends together with the contact portion 36, a clamping screw 18 enclosing the U-shape. The end 46 of the contact carrier 8 thus forms a stop 47 for the clamping screw 18. The inside diameter d of the holding portion 26b is in fact dimensioned such that when the screw head 48 abuts the end 46 the screw with its threaded portion 44 is still held in the bore 42 and thus is not removable from this.

Beim Zusammenbau der Anschlussklemme 4 wird zunächst die Klemmschraube 18 in die Bohrung 42 des zumindest noch unvollständig gebogenen Kontaktträgers 8 eingeführt und dann der Kontaktträger 8 zu seiner in FIG 1 gezeigten U-Form gebogen. Um mit einem Schraubendreher 50 in den Schraubenkopf 48 eingreifen zu können, ist im Ende 46 des Kontaktträgers 8 eine Öffnung 52 vorgesehen.When assembling the terminal 4, the clamping screw 18 is first inserted into the bore 42 of the at least incompletely bent contact carrier 8 and then the contact carrier 8 to his in FIG. 1 bent U-shape shown bent. In order to be able to engage with a screwdriver 50 in the screw head 48, an opening 52 is provided in the end 46 of the contact carrier 8.

Zwischen dem Schraubenkopf 48 und dem Kontaktträger 8 stützt sich eine die Klemmschraube 18 konzentrisch umgebende Schraubenfeder 14 ab und spannt somit die Klemmschraube 18 in der in FIG 1 dargestellten Öffnungsstellung mit ihrem Schraubenkopf 48 gegen das Ende 46 des Kontaktträgers 8 als Anschlag vor. Ein kleiner Abschnitt 56 der Klemmschraube 18 steht hierbei über die Kontaktfläche 38 vor und bildet eine Rastnase für die Öffnung 58 des Ringkabelschuhs 6, so dass die Öffnung 58 mit der Mittellängsachse 16 der Klemmschraube 18 bzw. der Bohrung 42 und der Gewindebohrung 62 in der Gewindeschiene 12 fluchtet.Between the screw head 48 and the contact carrier 8 is a clamping screw 18 concentrically surrounding coil spring 14 and thus biases the clamping screw 18 in the in FIG. 1 shown opening position with its screw head 48 against the end 46 of the contact carrier 8 as a stop. A small portion 56 of the clamping screw 18 protrudes beyond the contact surface 38 and forms a detent for the opening 58 of the ring cable lug 6, so that the opening 58 with the central longitudinal axis 16 of the clamping screw 18 and the bore 42 and the threaded hole 62 in the threaded rail 12 is aligned.

Zwischen Gewindeabschnitt 44 und Schraubenkopf 48 der Klemmschraube 18 ist ein gegenüber dem Gewindeabschnitt 44 bzw. der Bohrung 42 im Durchmesser erweiterter und gegenüber dem Schraubenkopf 48 verkleinerter zylindrischer Absatz 54 angeordnet. Dessen Höhe h ist größer als die Höhe der vollständig komprimierten Schraubenfeder 14. So ist ein sicheres Aufsetzen des Absatzes 54 auf dem Kontaktträger 8 gewährleistet, ohne dass sich vorher der Schraubenkopf 48 auf der vollständig komprimierten Schraubenfeder 14 abstützt.Between the threaded portion 44 and the screw head 48 of the clamping screw 18 is a relative to the threaded portion 44 and the bore 42 in diameter enlarged and compared to the screw head 48 reduced cylindrical shoulder 54 is arranged. Its height h is greater than the height of the fully compressed coil spring 14. Thus, a secure placement of the heel 54 on the contact carrier 8 is ensured without previously the screw head 48 is supported on the fully compressed coil spring 14.

Zum Anschließen des Ringkabelschuhs 6 wird dieser in Richtung des Pfeils 64 in die Anschlussklemme 4 eingebracht, bis die Öffnung 58 am Abschnitt 56 der Klemmschraube 18 einrastet. Mit dem Schraubendreher 50 wird sodann die Klemmschraube 18 in Richtung des Pfeils 66 durch die Öffnung 58 vorgeschoben, bis deren Gewindeabschnitt 44 in Eingriff mit der Gewindebohrung 62 tritt. Die Klemmschraube 18 wird dann in der Gewindebohrung 62 verschraubt, bis die Gewindeschiene 12 entgegen der Richtung des Pfeils 66 den Ringkabelschuh 6 mit seiner zweiten Flachseite 40b zwischen sich und der Kontaktfläche 38 einklemmt. Der Absatz 54 stützt sich dann am Kontaktträger 8 ab, wobei die Schraubenfeder 14 den Absatz 54 in noch nicht vollständig komprimierter Weise konzentrisch umgibt. Diese Schließposition 68 ist in FIG 3 schematisch dargestellt. Dort sind auch die Außendurchmesser w1 des Schraubenkopfes 48, w2 des Absatzes 54 und der Innendurchmesser w3 der Feder 14 dargestellt.To connect the ring lug 6, this is introduced in the direction of the arrow 64 in the terminal 4 until the opening 58 engages the portion 56 of the clamping screw 18. With the screwdriver 50, the clamping screw 18 is then advanced in the direction of arrow 66 through the opening 58 until the threaded portion 44 engages with the threaded hole 62. The clamping screw 18 is then screwed into the threaded hole 62 until the threaded rail 12 counter the direction of the arrow 66 the ring cable lug 6 with its second flat side 40b between them and the contact surface 38 clamps. The heel 54 is then supported on the contact carrier 8, wherein the coil spring 14 surrounds the shoulder 54 concentrically in not yet completely compressed manner. This closing position 68 is in FIG. 3 shown schematically. There, the outer diameter w 1 of the screw head 48, w 2 of paragraph 54 and the inner diameter w 3 of the spring 14 are shown.

Zum Lösen des Ringkabelschuhs 6 aus der Anschlussklemme 4 wird in umgekehrter Reihenfolge vorgegangen, wobei die Klemmschraube 18 entgegen der Richtung des Pfeils 66 durch die Feder 14 verursacht wieder in die in FIG 1 gezeigte Endstellung schnellt, sobald der Gewindeabschnitt 44 die Gewindebohrung 62 verlassen hat. Der Ringkabelschuh 6 ist somit durch die Klemmschraube 18 nicht mehr blockiert und kann durch leichtes Abheben über den Abschnitt 56 entnommen werden.To loosen the ring lug 6 from the terminal 4 is proceeded in the reverse order, the clamping screw 18 against the direction of the arrow 66 caused by the spring 14 back into the in FIG. 1 shown end position fast as soon as the threaded portion 44 has left the threaded hole 62. The ring cable lug 6 is thus no longer blocked by the clamping screw 18 and can be removed by slight lifting over the section 56.

Claims (13)

  1. Terminal point (4) for connection of a ring cable lug (6) to an electrical appliance (2), having an electrically conductive connecting piece (8) which has an appliance connection (22), and having a clamping apparatus (12, 18) which can move relative to the connecting piece (8) in order to press the ring cable lug (6) onto a contact surface (38) of the connecting piece (8), wherein at least a part (26a, b) of the connecting piece (8) is in the form of a holding apparatus (28, 30, 47) which holds the clamping apparatus (12, 18) captive on the connecting piece (8), and with the holding apparatus (28, 30, 47) having a stop (47) for the screw head (48) when the terminal screw (18) is released, characterized in that the clamping apparatus (12, 18) has a terminal screw (18), which can be tightened in order to press on the ring cable lug (6) and in the process passes through the opening (58) thereof.
  2. Terminal point (4) according to Claim 1, in which the clamping apparatus (12, 18) is detachable.
  3. Terminal point (4) according to Claim 1 or 2, in which the holding apparatus (28, 30, 47) is a projection (26b), which at least partially surrounds the clamping apparatus (12, 18), on the connecting piece.
  4. Terminal point (4) according to one of the preceding claims, in which the terminal screw (18) passes through a hole (42) in the connecting piece (8), and the stop (47) is arranged on that side of the connecting piece (8) which faces the screw head (48) in the axial direction (60) of the hole (42).
  5. Terminal point (4) according to one of the preceding claims, in which an opening (52) for a tool (50) to engage in the terminal screw (18) is provided in the stop (47).
  6. Terminal point (4) according to one of the preceding claims, in which that end (56) of the terminal screw (18) which is remote from the screw head (48) projects beyond the connecting piece (8) when the terminal screw (18) is located in the open position (16).
  7. Terminal point (4) according to Claim 4 to 6, in which the stop (47) is arranged at that end (46) of a projection (26b) which extends away from the hole (42) in a U-shape.
  8. Terminal point (4) according to one of the preceding claims, having a spring (14) which prestresses the terminal screw (18) in its open position (16).
  9. Terminal point (4) according to Claim 8, in which the terminal screw (18) has a step (54), which is adjacent to the screw head (48) and is supported on the connecting piece (8) when the terminal screw (18) is tightened (68), with the spring (14) in this case surrounding the step (54).
  10. Terminal point (4) according to Claim 9, in which the screw head (48) has a first diameter (w1) and the step (54) has a smaller, second diameter (w2), and the internal diameter (w3) of the spring (14) is between the first diameter (w1) and the second diameter (w2).
  11. Terminal point (4) according to one of the preceding claims, in which the clamping apparatus (12, 18) has a clamping plate (12) for pressing the ring cable lug (6) against the contact surface (38), with the clamping plate (12) having a projection (29, 30), and at least a part (26a) of the connecting piece (8) being in the form of a holding means (28) which interacts with the projection (29, 30).
  12. Terminal point (4) according to Claim 11, in which the projection (29, 30) is T-shaped, and the holding means (28) is an opening (28), behind which the projection engages, in the contact support (8).
  13. Terminal point (4) according to one of the preceding claims, in which the contact support (8) is in the form of a flat ribbon.
EP07722359.2A 2007-05-04 2007-05-04 Terminal point for connecting a ring terminal to an electrical device Not-in-force EP2153492B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2007/000803 WO2008134992A1 (en) 2007-05-04 2007-05-04 Terminal point for connecting a ring terminal to an electrical device

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EP2153492A1 EP2153492A1 (en) 2010-02-17
EP2153492B1 true EP2153492B1 (en) 2014-02-26

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EP (1) EP2153492B1 (en)
KR (1) KR101257145B1 (en)
CN (1) CN101669253B (en)
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WO (1) WO2008134992A1 (en)

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Also Published As

Publication number Publication date
CN101669253B (en) 2012-07-04
EP2153492A1 (en) 2010-02-17
KR101257145B1 (en) 2013-04-22
CN101669253A (en) 2010-03-10
DE112007003566A5 (en) 2010-04-08
WO2008134992A1 (en) 2008-11-13
KR20100016168A (en) 2010-02-12

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