EP2491619B1 - Spring terminal block - Google Patents

Spring terminal block Download PDF

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Publication number
EP2491619B1
EP2491619B1 EP10711546.1A EP10711546A EP2491619B1 EP 2491619 B1 EP2491619 B1 EP 2491619B1 EP 10711546 A EP10711546 A EP 10711546A EP 2491619 B1 EP2491619 B1 EP 2491619B1
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EP
European Patent Office
Prior art keywords
conductor
conductor end
end portion
spring
terminal block
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.)
Active
Application number
EP10711546.1A
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German (de)
French (fr)
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EP2491619A1 (en
Inventor
Jürgen Brand
Manuel Camino
Ralph Hoppmann
Holger Steinhage
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.)
Phoenix Contact GmbH and Co KG
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Phoenix Contact GmbH and Co KG
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Publication of EP2491619A1 publication Critical patent/EP2491619A1/en
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Publication of EP2491619B1 publication Critical patent/EP2491619B1/en
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    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/48275—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end with an opening in the housing for insertion of a release tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting

Definitions

  • the invention relates to a spring-loaded terminal with a busbar and a leg spring for connecting a stripped conductor end of an electrical conductor with the generic features of
  • Such spring terminals have an electrical conductor strip which carries the current and which is commonly referred to as a busbar or current bar.
  • This bus bar has one or more openings for insertion of one or more stripped conductor end pieces.
  • the busbar typically consists of a sheet metal strip in which the openings are punched in the form of material passages.
  • the stripped conductor end piece is typically inserted through a housing opening in the opening formed by the material passage in the busbar and clamped with a leg spring against the edge of the busbar opening.
  • Such spring terminals are z. B. for the so-called direct plug DTI (Direct Terminals for Installation) used, the arrangement and contour of the leg spring allows tool-free wiring of the electrical conductors.
  • the spring opens automatically when inserting the conductor end, which operates the leg spring.
  • rigid single-wire conductors or prefabricated strands with a ferrule can be used.
  • the conductor in such a terminal, can be rotated relatively easily in the nip due to the transverse profile of the transverse edge of the material passage, with each transverse movement the transverse edge cuts into the conductor end.
  • the stability of the conductor end piece can be impaired.
  • Such spring force clamping connections are typically reusable, so that the conductor can be repeatedly inserted and removed again.
  • the conductor is moved, which is typically accompanied by a rotation.
  • any other contact or movement of the conductor can lead to a twisting, which is the case in particular in cabinets in which a large variety of such terminals and associated conductors are present, so that any access to any of the Federkraftklemman say also frequently to a touch or a movement of a variety of other conductors leads.
  • the necessary insertion force when inserting the conductor in the Federkraftklemman gleich can increase by a transverse edge.
  • the transverse edge may have a certain roughness due to the punching process, whereby the insertion force can be further increased and the insertion can be scratchy and jerky.
  • a basically desirable high clamping force is paid with a fundamentally undesirable large insertion force. This can lead to pinching of the conductor during insertion, especially with thin conductors.
  • the invention is therefore based on the object to provide a spring-cage terminal with a busbar and a leg spring, which brings the opposite objectives of a high clamping force and low insertion force as well as possible in line.
  • a further object of the invention is to provide such a spring force connection terminal which ensures a tight fit, in particular against rotation of the conductor in the spring force connection terminal.
  • Another object of the invention is to provide such a spring-cage terminal with permanent contact reliability even with multiple plugging and pulling out of the conductor again.
  • the spring force connection terminal comprises a busbar and a leg spring and is designed for connecting a stripped conductor end piece of an electrical conductor.
  • the electrical spring terminal is designed as a plug-in terminal, in which the stripped conductor end is inserted or inserted.
  • Such spring terminals are used, for example, for building installation or in control cabinets for power line and have for example a connection capacity of a few tenths to a few square millimeters at a maximum current in the order of up to a few amperes or tens of amperes or more.
  • the spring-cage terminal can be prepared, for example, as a terminal with direct plug-in technology (so-called DTI terminal), so that the stripped conductor end piece without tools into the spring-cage terminal can be inserted.
  • DTI terminal a terminal with direct plug-in technology
  • the clamping element pair formed from busbar and leg spring is pressed on exclusively with the insertion force applied via the conductor in the insertion direction of the conductor.
  • DTI terminals can be used to connect rigid stripped (single) wires or leads prefabricated with ferrules.
  • the bus bar is made of a flat sheet metal, e.g. punched and has one or more material passages.
  • the material passage forms an insertion opening or an insertion hole in the busbar into which or through which the stripped conductor end piece is inserted or pushed through.
  • the material passage is typically stamped into the bus bar and forms an annular metal collar extending in the insertion direction, so that two-dimensionally extended metal collar inner wall surfaces are formed on the inside of the metal collar facing the conductor insertion opening.
  • the leg spring has a clamping leg with a nip, which dips into the material passage.
  • the nip is formed by the front end edge of the clamping leg end, which extends transversely to the insertion direction.
  • the busbar sometimes referred to as a current bar, and the leg spring are in particular in a dielectric connection housing, for example, a flat module housing installed and secured therein.
  • the leg spring is particularly useful as one, e.g. U-shaped bent, leaf spring formed and has in particular on the U-arm opposite side of the clamping leg a holding leg.
  • the U-bow causes the bias for the clamping of the conductor, wherein the retaining leg is supported on the housing.
  • the pad is not formed by a narrow transverse edge transverse to the insertion direction, eg the peripheral edge of the hole collar, but the first metal collar inner wall surface forms not only transversely but also along the longitudinal axis of the clamped conductor end a two-dimensionally extended contact surface around the to make electrical current-carrying connection between the conductor and the busbar.
  • the spring force terminal according to the invention is thus constructed so that the stripped conductor end in the clamping position over a certain extended length of the stripped conductor rests against said first metal collar inner wall surface.
  • the contact surface formed by the first metal collar inner wall surface extends in particular parallel to the insertion direction of the conductor.
  • the invention has even more advantages. Due to the longitudinal extent of the contact ribs, a rotation of the conductor in the clamping position is counteracted. As a result, the annular cutting into the conductor can be prevented or at least reduced. Nevertheless, the conductor end piece is held by the clamping edge of the clamping leg with a high holding force against pulling out of the conductor end piece in the terminal.
  • the two clamping elements on both sides of the clamping (clamping edge of the clamping leg and contact surface of the busbar) namely perpendicular to each other, so that a strong frictional connection is generated in different directions of force.
  • the nip of the clamping leg is positioned in the direction of the longitudinal axis of the conductor end in the middle or near the center of the contact surface of the bus bar or first metal collar inner wall surface when the conductor end is clamped in the clamping position. This ensures a uniform contact or normal force over the extent of the contact surface along the conductor end piece and a secure surface contact.
  • the contact ribs have a triangular cross-section transverse to the longitudinal axis of the conductor so that the upper edges of the contact ribs facing the conductor end can penetrate somewhat into the conductor, which typically consists of copper or a copper alloy.
  • the contact surface transverse to the longitudinal axis of the clamped conductor end piece on a zig-zag cross-section, in which between two contact ribs in each case a groove with z. B. is also provided triangular cross-section, so that the contact between the conductor end piece and the contact surface along a plurality of lines along the longitudinal axis of the clampedêtend Swisss is formed.
  • the contact surface is flat and the contact ribs are rectilinear along the longitudinal axis of the clamped conductor end.
  • the conductor end piece extends in the clamping position parallel to the contact surface plane. This achieves a large contact length along the longitudinal axis of the clamped conductor end.
  • the contact surface can be convexly curved along the longitudinal axis of the clamped conductor end piece in the direction of the clamping leg or of the conductor end piece.
  • the radius of curvature is so large and the edges of the contact ribs are formed so sharp that the contact ribs penetrate along the longitudinal axis of the clamped conductor end over an extended length along its longitudinal axis slightly into the Leiterend Swisss.
  • the grid spacing between the contact ribs is approximately in the range between one third and one twentieth of the maximum diameter of the electrical conductor for which the spring force connection terminal is dimensioned.
  • the number of contact ribs may preferably be in the range between about 5 and about 50. This ensures a sufficient contact force on the one hand and a sufficient frictional engagement against rotation of the conductor on the other. However, it should not be ruled out that, if necessary, at least two or three contact ribs are provided.
  • the dielectric connection housing has a conductor insertion funnel, which predetermines the insertion direction of the conductor during insertion and supports the conductor in the clamping position against gross tilting.
  • the insertion channel runs parallel to the contact surface.
  • the dielectric terminal housing forms on the insertion side opposite side of the material passage a closed pocket, in which the Porterend consultancy dips beyond the clamping.
  • the bag has a bottom, which forms a stop for the front end of the conductor end piece during insertion.
  • the spring-cage terminal 10 has a busbar 22, which runs perpendicular to the plane of the drawing.
  • the busbar 22 has a material passage 24 with a circumferential metal collar 26.
  • the material passage 24 is punched out with the metal collar 26 from a metal sheet from which the bus bar 22 is made in one piece.
  • the metal collar 26 is closed in this example, annular, substantially rectangular in shape and extends from the flat busbar strip 28 by and large in the insertion direction E (in the Fig. 1 from top to bottom).
  • Rectangular circumferential metal collar 26 has circumferential metal collar inner wall surfaces 30a to 30d, of which the metal collar inner wall surfaces 30a and 30c are perpendicular to the plane of the drawing.
  • the metal collar inner wall surface 30a faces the leg spring 42 and forms the contact surface 52 of the bus bar 22 for the stripped electrical conductor end piece 16.
  • the leg spring 42 has a clamping leg 44 with a lower clamping leg end, which forms the clamping point 46 against the conductor end 16.
  • the leg spring 42 designed as a substantially U-shaped leaf spring still has a bow spring area 48 and a holding leg 50.
  • the leg spring 42 is fixed to a retaining eye 54 of the dielectric terminal or terminal housing 5 in the region of the spring bow 48 and an arcuate housing 56 in the plastic connection housing 5.
  • the holding leg 50 dips into the material passage 24 and is supported on the metal collar 26 or the metal collar inner wall surface 30c.
  • the leg spring 42 clamps with its clamping leg, more precisely the terminal point 46 forming end of the clamping leg 44, the stripped conductor end 16 against the contact surface 52. For this dips the clamping leg 44 in the material passage 24, in the direction of insertion E (in the Fig. 1 from above). Accordingly, the clamping leg 44 extends in the same direction as the metal collar 26 of the busbar 22nd
  • the electrical connection housing 5 further has a closed pocket 58 below the metal collar 26 which receives or surrounds the front end 16a of the stripped conductor end piece 16.
  • the bottom 60 of the pocket 58 forms a stop for the conductor end piece 16 during insertion of the conductor 12.
  • the conductor end 16 extends parallel to the contact surface 52 and is in this example over a large extent of the extension of the metal collar 26 along the longitudinal axis A of the conductor 12 at the flat in this example contact surface 52 to contact them.
  • the contact surface 52 has a ribbed surface 64 provided with contact ribs 62, as best shown in FIGS Fig. 2 to 6 is shown.
  • connection housing 5 further has a conductor insertion funnel 57, which guides the conductor 12 during insertion and in the clamping position and essentially predetermines the insertion direction E.
  • the conductor insertion funnel 57 runs essentially parallel to the contact surface 52.
  • the insertion direction E or the axis A of the conductor 12 and the contact surface 52 extend at an oblique angle to the conductor rail strip 28.
  • the clamping leg 44 has a protrusion 72 facing the conductor 12.
  • a tool such as a screwdriver is inserted through the tool opening 59 of the terminal housing 5 and the terminal with the Tool opened, the protrusion 72 helps in the attachment of the leg spring 42.
  • the contact ribs 62 have a substantially triangular cross-section and extend along the axis A of the conductor 12.
  • the contact ribs 62 form with the intervening substantially also triangular grooves 66, the one-dimensionally ribbed surface 64, which therefore has a regular zig-zag cross-section transverse to the axis A of the conductor 12 has.
  • the conductor end 16 is in the clamping position typically on at least two of the contact ribs 62 linear.
  • the contact ribs 62 more or less dig into the conductor end piece 16, so that an abutment on more than two of the contact ribs 62 is possible. As a result, a contact region with a plurality of contact lines extending between the conductor end piece 16 and the contact surface 52 forms.
  • the contact ribs 62 extend over a substantial portion of the length along the axis A of the conductor 12 via the metal collar 26 and its metal collar inner wall surface 30a.
  • FIG Fig. 4 The sizing of the contact ribs 62 and the grooves 66 is best in FIG Fig. 4 to recognize.
  • the ribbed surface 64 of the contact surface 52 twelve contact ribs 62, which by impressing the intervening grooves 66 are formed on the metal collar inner wall surface 30a.
  • Fig. 5 shows an alternative embodiment with six contact ribs 62, which are slightly shorter than in Fig. 4 , Furthermore, the grooves 66 between the contact ribs 62 have a greater distance than in Fig. 4 such that the pitch R of the contact ribs 62 is greater than in the embodiment of FIG Fig. 4 ,
  • the contact ribs 62 have a trapezoidal cross-section.
  • Fig. 1 and 7 depends on the spring force terminal 10 due to the pivoting movement of the clamping leg 44, the vertical position of the nip 46 from the thickness of the electrical conductor. With a smaller diameter of the electrical conductor ( Fig. 7 ), the nip 46 is higher than a larger diameter ( Fig. 1 ).
  • the spring force terminal 10 is designed and approved for a certain interval of conductor diameters, eg for conductor diameters in the range of 0.5 mm to 4 mm.
  • the clamping point 46 is at least at conductor diameters which are smaller than the maximum permissible conductor diameter above the lower edge 52a of the contact surface 52nd
  • Fig. 8 shows the spring force terminal 10 from the Fig. 1 and 7 prior to insertion of the conductor, wherein the clamping leg 44 abuts against the contact surface 52 due to the bias of the leg spring 42.
  • the conductor end piece can therefore be in the short term mainly with the lower edge 52a of the contact surface 52 in contact with a tilt of the conductor, although this is generally undesirable.
  • Fig. 9 shows a spring terminal 10 according to a modified embodiment of the invention, namely along the longitudinal axis A convexly curved contact surface 52.
  • the radius of curvature r of the contact surface 52 is sized so large that due to the softness of the conductor (typically copper or a copper alloy), the conductor end 16 on a finite length L entlag the longitudinal axis A with the contact surface 52 is in electrical contact.
  • the length L should be at least a few tenths of a millimeter, better still a millimeter or more.
  • the curvature of the contact surface 52 has the advantage that with a slight tilting of the conductor 12, nevertheless, a large-area electrical contact between the conductor end piece 16 and the contact surface 52 is maintained and the conductor end piece is not damaged by the lower edge 52a.
  • the contact surface 52 may be one-dimensional, but also curved two-dimensionally.
  • the two-dimensional curvature can either convex, ie convexly shaped in both dimensions of the plane of the contact surface 52 or saddle-shaped, ie, be convex along the longitudinal axis A and transversely to the longitudinal axis A.
  • the latter can further increase the size of the contact surface of the conductor end piece 16 at the contact surface 52.
  • Fig. 10 shows a spring force terminal 10 according to another modified embodiment of the invention, namely with extended contact surface 52.
  • the leg spring 42 opposite metal collar inner wall surface 30a is extended downward.
  • the metal collar inner wall surface 30a or the contact surface 52 thus project beyond the remaining metal collar 26 in the insertion direction E.
  • This advantageously counteracts a tilting of the conductor end piece 16 and ensures that the conductor end piece 16 bears against the contact surface 52 over a large length L.
  • cutting the lower edge 52a into the conductor end piece 16 is largely avoided and the contact area is increased.
  • the nip 46 is even above the lower edge 52a of the contact surface 52 even at the maximum permitted conductor diameter.
  • Fig. 11 shows a portion of the associated bus bar 22 with the material passage 24 and the leg spring 42 in three-dimensional representation.
  • Fig. 12 shows a spring terminal 10 for modular attachment to a mounting rail (not shown). As is known to those skilled in the art, a large number of these modules 10 are placed side by side on the mounting rail, for example in building installation technology.
  • Fig. 13 shows the busbar 22 of the spring-force connection terminal 10 Fig. 12 in angled form and with two vertically offset material passages 24.

Description

Gebiet der ErfindungField of the invention

Die Erfindung betrifft eine Federkraftanschlussklemme mit einer Stromschiene und einer Schenkelfeder zum Anschließen eines abisolierten Leiterendstücks eines elektrischen Leiters mit den gattungsbildenden Merkmalen desThe invention relates to a spring-loaded terminal with a busbar and a leg spring for connecting a stripped conductor end of an electrical conductor with the generic features of

Patentanspruchs 1.Patent claim 1.

Hintergrund der ErfindungBackground of the invention

Derartige Federkraftanschlussklemmen besitzen einen elektrischen Leiterstreifen, welcher den Strom trägt und der üblicherweise als Stromschiene oder Strombalken bezeichnet wird. Diese Stromschiene besitzt eine oder mehrere Öffnungen zum Einstecken eines oder mehrerer abisolierter Leiterendstücke. Hierzu besteht die Stromschiene typischerweise aus einem Metallblechstreifen, in welchen die Öffnungen in Form von Materialdurchzügen eingestanzt sind. Das abisolierte Leiterendstück wird typischerweise durch eine Gehäuseöffnung in die von dem Materialdurchzug gebildete Öffnung in der Stromschiene eingesteckt und mit einer Schenkelfeder gegen den Rand der Stromschienenöffnung geklemmt.Such spring terminals have an electrical conductor strip which carries the current and which is commonly referred to as a busbar or current bar. This bus bar has one or more openings for insertion of one or more stripped conductor end pieces. For this purpose, the busbar typically consists of a sheet metal strip in which the openings are punched in the form of material passages. The stripped conductor end piece is typically inserted through a housing opening in the opening formed by the material passage in the busbar and clamped with a leg spring against the edge of the busbar opening.

Derartige Federkraftanschlussklemmen werden z. B. für die so genannte Direktstecktechnik DTI (Direct Terminals for Installation) verwendet, wobei die Anordnung und Kontur der Schenkelfeder eine werkzeuglose Verdrahtung der elektrischen Leiter ermöglicht. Bei einer DTI-Klemme öffnet die Feder selbsttätig beim Einschieben des Leiterendstücks, welches die Schenkelfeder betätigt. Hierzu können z.B. starre Einzeldrahtleiter oder vorkonfektionierte Litzen mit einer Aderendhülse verwendet werden.Such spring terminals are z. B. for the so-called direct plug DTI (Direct Terminals for Installation) used, the arrangement and contour of the leg spring allows tool-free wiring of the electrical conductors. In a DTI clamp, the spring opens automatically when inserting the conductor end, which operates the leg spring. For this purpose, for example rigid single-wire conductors or prefabricated strands with a ferrule can be used.

In der EP 1 391 965 B1 ist ein elektrischer Federkraftklemmanschluss mit viereckigem Materialdurchzug beschrieben, der als Leiterdurchstecköffnung dient und einen Lochkragen besitzt. Die dortige Lochkrageninnenwandfläche bildet eine gegen den elektrischen Leiter vorstehende und sich quer zur Leiterdurchsteckrichtung erstreckende Querkante, welche insbesondere durch die untere Randkante des Lochkragens des Materialdurchzugs gebildet wird. Hierdurch soll ein Kontaktpunkt als Kreuzungspunkt zwischen dem elektrischen Leiter und der vorstehenden Querkante an der Lochkrageninnenwandfläche gebildet werden, wodurch die Kontaktanlagefläche zwischen dem elektrischen Leiter und dem Lochkragen des Materialdurchzugs auf eine kleinere definierte Kontaktanlagefläche minimiert werden und eine maximal mögliche Kontaktkraft aufgebracht werden soll. Dies verbessere die Stromübergänge und Kontaktsicherheit in der Klemmstelle.In the EP 1 391 965 B1 is described an electrical spring terminal with square material passage, which serves as Leiterdurchstecköffnung and has a hole collar. The local Lochkrageninnenwandfläche forms a projecting against the electrical conductor and extending transversely to Leiterendurchsteckrichtung transverse edge which is formed in particular by the lower peripheral edge of the hole collar of the material passage. As a result, a contact point is to be formed as a crossing point between the electrical conductor and the protruding transverse edge of the inner wall Lochkrageninnenfläche, whereby the contact bearing surface between the electrical conductor and the hole collar of the material passage are minimized to a smaller defined contact bearing surface and a maximum possible contact force to be applied. This improves the current transitions and contact reliability in the terminal point.

Im Rahmen der vorliegenden Erfindung wurde allerdings herausgefunden, dass sich bei einer solchen Klemme der Leiter aufgrund des Querverlaufs der Querkante des Materialdurchzugs relativ leicht in der Klemmstelle verdrehen lässt, wobei mit jeder drehenden Bewegung die Querkante in das Leiterendstück einschneidet. Hierdurch kann insbesondere bei dünnen Leitern die Stabilität des Leiterendstücks beeinträchtigt werden.In the present invention, however, it has been found that in such a terminal, the conductor can be rotated relatively easily in the nip due to the transverse profile of the transverse edge of the material passage, with each transverse movement the transverse edge cuts into the conductor end. As a result, in particular with thin conductors, the stability of the conductor end piece can be impaired.

Derartige Federkraftklemmanschlüsse sind typischerweise mehrfach verwendbar, so dass der Leiter mehrfach eingesteckt und wieder herausgenommen werden kann. Insbesondere bei jedem Einsteck- und Entnahmevorgang wird der Leiter bewegt, was typischerweise auch mit einer Drehung einhergeht. Allerdings kann auch jede sonstige Berührung oder Bewegung des Leiters zu einem Verdrehen führen, was insbesondere in Schaltschränken der Fall ist, in denen eine große Vielzahl solcher Klemmen und zughörigen Leitern vorhanden sind, so dass jeder Zugriff auf irgendeinen der Federkraftklemmanschlüsse auch häufig zu einer Berührung oder einer Bewegung einer Vielzahl der anderen Leiter führt.Such spring force clamping connections are typically reusable, so that the conductor can be repeatedly inserted and removed again. In particular, in each insertion and removal operation, the conductor is moved, which is typically accompanied by a rotation. However, any other contact or movement of the conductor can lead to a twisting, which is the case in particular in cabinets in which a large variety of such terminals and associated conductors are present, so that any access to any of the Federkraftklemmanschlüsse also frequently to a touch or a movement of a variety of other conductors leads.

In nachteiliger Weise kann sich die notwendige Steckkraft beim Einstecken des Leiters in den Federkraftklemmanschluss durch eine Querkante erhöhen. Ferner kann die Querkante aufgrund des Stanzprozesses eine gewisse Rauhigkeit aufweisen, wodurch die Steckkraft noch weiter erhöht werden und der Einsteckvorgang kratzig und ruckelig sein kann. Bei solchen Federkraftklemmanschlüssen wird demnach eine grundsätzlich erwünschte hohe Klemmkraft mit einer grundsätzlich unerwünschten großen Einsteckkraft bezahlt. Dies kann bis zum Vernicken des Leiters beim Einstecken führen, insbesondere bei dünnen Leitern.Disadvantageously, the necessary insertion force when inserting the conductor in the Federkraftklemmanschluss can increase by a transverse edge. Furthermore, the transverse edge may have a certain roughness due to the punching process, whereby the insertion force can be further increased and the insertion can be scratchy and jerky. In such Federkraftklemmanschlüssen a basically desirable high clamping force is paid with a fundamentally undesirable large insertion force. This can lead to pinching of the conductor during insertion, especially with thin conductors.

Weiter wird auf das Dokument EP 1 860 735 A1 verwiesen, welches die Merkmale des Oberbegriffs von Anspruch 1 zeigt.Next will be on the document EP 1 860 735 A1 referenced, which shows the features of the preamble of claim 1.

Allgemeine Beschreibung der ErfindungGeneral description of the invention

Die Erfindung hat sich daher die Aufgabe gestellt, eine Federkraftanschlussklemme mit einer Stromschiene und einer Schenkelfeder bereit zu stellen, welche die gegensätzlichen Zielsetzungen einer hohen Klemmkraft und einer geringen Einsteckkraft möglichst gut miteinander in Einklang bringt.The invention is therefore based on the object to provide a spring-cage terminal with a busbar and a leg spring, which brings the opposite objectives of a high clamping force and low insertion force as well as possible in line.

Eine weitere Aufgabe der Erfindung ist es, eine derartige Federkraftanschlussklemme bereit zu stellen, welche einen festen Sitz, insbesondere gegen Verdrehung des Leiters in der Federkraftanschlussklemme gewährleistet.A further object of the invention is to provide such a spring force connection terminal which ensures a tight fit, in particular against rotation of the conductor in the spring force connection terminal.

Eine weitere Aufgabe der Erfindung ist es, eine derartige Federkraftanschlussklemme mit dauerhafter Kontaktsicherheit auch bei vielfachem Einstecken und wieder Herausziehen des Leiters bereit zu stellen.Another object of the invention is to provide such a spring-cage terminal with permanent contact reliability even with multiple plugging and pulling out of the conductor again.

Die Aufgabe der Erfindung wird durch den Gegenstand der unabhängigen Ansprüche gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen definiert.The object of the invention is solved by the subject matter of the independent claims. Advantageous developments of the invention are defined in the subclaims.

Die erfindungsgemäße Federkraftanschlussklemme umfasst eine Stromschiene und eine Schenkelfeder und ist zum Anschließen eines abisolierten Leiterendstücks eines elektrischen Leiters ausgebildet. Die elektrische Federkraftanschlussklemme ist als eine Steckklemme ausgebildet, in welche das abisolierte Leiterendstück eingesteckt bzw. eingeschoben wird. Derartige Federkraftanschlussklemmen werden z.B. für die Gebäudeinstallation oder in Schaltschränken zur Stromleitung verwendet und weisen z.B. ein Anschlussvermögen von einigen Zehntel bis einigen Quadratmillimeter bei einem Maximalstrom in der Größenordnung bis zu einigen Ampere oder einigen zehn Ampere oder mehr auf. Die Federkraftanschlussklemme kann z.B. als eine Klemme mit Direktstecktechnik (sogenannte DTI-Klemme) hergerichtet sein, so dass das abisolierte Leiterendstück werkzeuglos in die Federkraftanschlussklemme eingesteckt werden kann. Hierbei wird ausschließlich mit der über den Leiter in Einsteckrichtung des Leiters aufgebrachten Einsteckkraft das aus Stromschiene und Schenkelfeder gebildete Klemmelementepaar aufgedrückt. DTI-Klemmen können z.B. zum Anschluss von starren abisolierten (Einzel-) Drähten oder von mit Aderendhülsen vorkonfektionierten Litzen verwendet werden.The spring force connection terminal according to the invention comprises a busbar and a leg spring and is designed for connecting a stripped conductor end piece of an electrical conductor. The electrical spring terminal is designed as a plug-in terminal, in which the stripped conductor end is inserted or inserted. Such spring terminals are used, for example, for building installation or in control cabinets for power line and have for example a connection capacity of a few tenths to a few square millimeters at a maximum current in the order of up to a few amperes or tens of amperes or more. The spring-cage terminal can be prepared, for example, as a terminal with direct plug-in technology (so-called DTI terminal), so that the stripped conductor end piece without tools into the spring-cage terminal can be inserted. In this case, the clamping element pair formed from busbar and leg spring is pressed on exclusively with the insertion force applied via the conductor in the insertion direction of the conductor. For example, DTI terminals can be used to connect rigid stripped (single) wires or leads prefabricated with ferrules.

Die Stromschiene ist aus einem flachen Metallblech hergestellt, z.B. gestanzt und weist eine oder mehrere Materialdurchzüge auf. Der Materialdurchzug bildet eine Einstecköffnung oder ein Einsteckloch in der Stromschiene in welche bzw. durch welche das abisolierte Leiterendstück eingesteckt bzw. durchgesteckt wird. Der Materialdurchzug ist typischerweise in die Stromschiene eingestanzt und bildet einen ringförmigen und sich in der Einsteckrichtung erstreckenden Metallkragen, so dass an der der Leiter-Einstecköffnung zugewandten Innenseite des Metallkragens zweidimensional ausgedehnte Metallkragen-Innenwandflächen gebildet werden.The bus bar is made of a flat sheet metal, e.g. punched and has one or more material passages. The material passage forms an insertion opening or an insertion hole in the busbar into which or through which the stripped conductor end piece is inserted or pushed through. The material passage is typically stamped into the bus bar and forms an annular metal collar extending in the insertion direction, so that two-dimensionally extended metal collar inner wall surfaces are formed on the inside of the metal collar facing the conductor insertion opening.

Die Schenkelfeder weist einen Klemmschenkel mit einer Klemmstelle auf, welche in den Materialdurchzug eintaucht. Vorzugsweise wird die Klemmstelle von der stirnseitigen Endkante des Klemmschenkelendes gebildet, welche sich quer zur Einsteckrichtung erstreckt. Die Stromschiene, manchmal auch als Strombalken bezeichnet, und die Schenkelfeder sind insbesondere in einem dielektrischen Anschlussgehäuse, z.B. einem flachen Modulgehäuse eingebaut und in diesem befestigt.The leg spring has a clamping leg with a nip, which dips into the material passage. Preferably, the nip is formed by the front end edge of the clamping leg end, which extends transversely to the insertion direction. The busbar, sometimes referred to as a current bar, and the leg spring are in particular in a dielectric connection housing, for example, a flat module housing installed and secured therein.

Die Schenkelfeder ist insbesondere als eine, z.B. U-förmig gebogene, Blattfeder ausgebildet und besitzt insbesondere auf der dem U-Bogen gegenüber liegenden Seite des Klemmschenkels einen Halteschenkel. Der U-Bogen bewirkt die Vorspannung für die Klemmung des Leiters, wobei sich der Halteschenkel an dem Gehäuse abstützt. Beim Einstecken des abisolierten Leiterendstücks in die Leiter-Einstecköffnung der Stromschiene wird der Klemmschenkel mittels der aufgebrachten Einsteckkraft gegen die Vorspannung der Schenkelfeder aufgedrückt und das Leiterendstück zwischen der Klemmstelle der Schenkelfeder und einer der Metallkragen-Innenwandflächen bis in die finale Klemmposition eingesteckt, in der das Leiterendstück von der Federkraft der Schenkelfeder mittels des Klemmschenkels festgeklemmt wird. Der Klemmschenkel erstreckt sich hierbei in der Einsteckrichtung, so dass die Klemme selbstschließend ist. Mit anderen Worten wird das quer zur Stromschiene in den Materialdurchzug eingesteckte Leiterendstück zwischen der Klemmstelle des Klemmschenkels und der dem Klemmschenkel gegenüber liegenden ersten Metallkragen-Innenwandfläche mittels der Federkraft der Schenkelfeder geklemmt.The leg spring is particularly useful as one, e.g. U-shaped bent, leaf spring formed and has in particular on the U-arm opposite side of the clamping leg a holding leg. The U-bow causes the bias for the clamping of the conductor, wherein the retaining leg is supported on the housing. When inserting the stripped conductor end in the conductor insertion of the busbar, the clamping leg is pressed by means of the applied insertion force against the bias of the leg spring and inserted the Leiterendstück between the terminal point of the leg spring and one of the metal collar inner wall surfaces to the final clamping position in which the Leiterendstück is clamped by the spring force of the leg spring by means of the clamping leg. The clamping leg extends in the insertion direction, so that the terminal is self-closing. In other words, the conductor end piece inserted transversely to the busbar into the material passage is clamped between the clamping point of the clamping leg and the first metal collar inner wall surface lying opposite the clamping leg by means of the spring force of the leg spring.

Im Gegensatz zu dem in der Einleitung beschriebenen Federkraftklemmanschluss gemäß EP 1 391 965 B1 , wird die Kontaktstelle bei der vorliegenden Erfindung nicht von einer schmalen quer zur Einsteckrichtung verlaufenden Querkante, z.B. der Randkante des Lochkragens, gebildet, sondern die erste Metallkragen-Innenwandfläche bildet eine sich nicht nur quer, sondern auch entlang der Längsachse des geklemmten Leiterendstücks erstreckende, also eine zweidimensional ausgedehnte Kontaktfläche, um die elektrische stromtragende Verbindung zwischen dem Leiter und der Stromschiene herzustellen. Die erfindungsgemäße Federkraftanschlussklemme ist also so konstruiert, dass das abisolierte Leiterendstück in der Klemmposition über eine gewisse ausgedehnte Länge des abisolierten Leiters an der besagten ersten Metallkragen-Innenwandfläche anliegt. Hierzu verläuft die von der ersten Metallkragen-Innenwandfläche gebildete Kontaktfläche insbesondere parallel zur Einsteckrichtung des Leiters.In contrast to the Federkraftklemmanschluss described in the introduction according to EP 1 391 965 B1 In the present invention, the pad is not formed by a narrow transverse edge transverse to the insertion direction, eg the peripheral edge of the hole collar, but the first metal collar inner wall surface forms not only transversely but also along the longitudinal axis of the clamped conductor end a two-dimensionally extended contact surface around the to make electrical current-carrying connection between the conductor and the busbar. The spring force terminal according to the invention is thus constructed so that the stripped conductor end in the clamping position over a certain extended length of the stripped conductor rests against said first metal collar inner wall surface. For this purpose, the contact surface formed by the first metal collar inner wall surface extends in particular parallel to the insertion direction of the conductor.

Weiter erfindungsgemäß weist die Kontaktfläche in Richtung des Klemmschenkels vorstehende und sich parallel entlang der Längssachse des geklemmten Leiterendstücks erstreckende Kontaktrippen auf, derart dass das abisolierte Leiterendstück in der Klemmposition über eine ausgedehnte Länge entlang seiner Längsachse an den Kontaktrippen anliegt und mit diesen in elektrischem Kontakt steht, so dass insbesondere ein zweidimensional ausgedehntes Kontaktgebiet entsteht, dahingehend dass das zweidimensional ausgedehnte Kontaktgebiet zwischen der Kontaktfläche der Stromschiene und dem Leiterendstück von zumindest zwei nebeneinander verlaufenden Kontaktlinien gebildet wird. Es wird demnach ein aus mehreren nebeneinander angeordneten und sich entlang des Leiters erstreckenden Linien bestehendes in Einsteckrichtung verlaufendes linienförmiges Kontaktmuster gebildet.Further according to the invention, the contact surface in the direction of the clamping leg projecting and parallel along the longitudinal axis of the clamped Leiterendstücks extending contact ribs, such that the stripped conductor end in the clamping position over an extended length along its longitudinal axis on the contact ribs and is in electrical contact with these so that, in particular, a two-dimensionally extended contact area is formed in that the two-dimensionally extended contact area between the contact area of the bus bar and the conductor end piece is formed by at least two juxtaposed contact lines. It is therefore formed from a plurality of juxtaposed and extending along the conductor lines existing in the insertion direction line-shaped contact pattern.

Dadurch dass die die Kontaktlinien bildenden Kontaktrippen sich in Richtung des Leiters bzw. der Leitereinsteckrichtung erstrecken, wird die notwendige Einsteckkraft beim Einführen des Leiterendstücks in die Klemme zwischen der Schenkelfeder und der Kontaktfläche der Stromschiene relativ gering gehalten. Die Kontaktrippen wirken ferner als Führung beim Einstecken des Leiterendstücks. Andererseits kann eine ausreichende Kontaktkraft oder Flächenpressung an der Kontaktstelle erzielt werden. Mit der Erfindung können also in vorteilhafter Weise diese zwei grundsätzlich gegensätzlichen Anforderungen miteinander vereint werden.The fact that the contact lines forming contact ribs extending in the direction of the conductor or the Leiterereinsteckrichtung, the necessary insertion force when inserting the Leiterendstücks in the terminal between the leg spring and the contact surface of the Busbar held relatively low. The contact ribs also act as a guide upon insertion of the conductor end piece. On the other hand, a sufficient contact force or surface pressure at the contact point can be achieved. With the invention, therefore, these two basically conflicting requirements can be combined with each other in an advantageous manner.

Die Erfindung hat aber noch weitere Vorteile. Aufgrund der Längserstreckung der Kontaktrippen wird einer Verdrehung des Leiters in der Klemmposition entgegengewirkt. Hierdurch kann das ringförmige Einschneiden in den Leiter verhindert oder zumindest vermindert werden. Trotzdem wird das Leiterendstück durch die Klemmkante des Klemmschenkels mit einer hohen Haltekraft gegen ein Herausziehen des Leiterendstücks in der Klemme gehalten. Die beiden Klemmelemente beidseits der Klemmung (Klemmkante des Klemmschenkels und Kontaktfläche der Stromschiene) verlaufen nämlich senkrecht zueinander, so dass in verschiedenen Kraftrichtungen ein starker Reibschluss erzeugt wird.But the invention has even more advantages. Due to the longitudinal extent of the contact ribs, a rotation of the conductor in the clamping position is counteracted. As a result, the annular cutting into the conductor can be prevented or at least reduced. Nevertheless, the conductor end piece is held by the clamping edge of the clamping leg with a high holding force against pulling out of the conductor end piece in the terminal. The two clamping elements on both sides of the clamping (clamping edge of the clamping leg and contact surface of the busbar) namely perpendicular to each other, so that a strong frictional connection is generated in different directions of force.

Vorzugsweise ist die Klemmstelle des Klemmschenkels in Richtung der Längsachse des Leiterendstücks in der Mitte oder in der Nähe der Mitte der Kontaktfläche der Stromschiene bzw. der ersten Metallkragen-Innenwandfläche positioniert, wenn das Leiterendstück in der Klemmposition geklemmt ist. Dadurch wird eine gleichmäßige Kontakt- oder Normalkraft über die Erstreckung der Kontaktfläche entlang des Leiterendstücks und eine sichere flächige Anlage gewährleistet.Preferably, the nip of the clamping leg is positioned in the direction of the longitudinal axis of the conductor end in the middle or near the center of the contact surface of the bus bar or first metal collar inner wall surface when the conductor end is clamped in the clamping position. This ensures a uniform contact or normal force over the extent of the contact surface along the conductor end piece and a secure surface contact.

Vorzugsweise weisen die Kontaktrippen quer zur Längsachse des Leiters einen dreieckigen Querschnitt auf, so dass die dem Leiterendstück zugewandten Oberkanten der Kontaktrippen etwas in den Leiter, welcher typischerweise aus Kupfer oder einer Kupferlegierung besteht, definiert eindringen können. Insbesondere weist die Kontaktfläche quer zur Längsachse des geklemmten Leiterendstücks einen Zick-Zack-Querschnitt auf, in dem zwischen zwei Kontaktrippen jeweils eine Riefe mit z. B. ebenfalls dreieckigem Querschnitt vorgesehen ist, so dass der Kontakt zwischen dem Leiterendstück und der Kontaktfläche entlang mehrerer Linien entlang der Längsachse des geklemmten Leiterendstücks gebildet wird.Preferably, the contact ribs have a triangular cross-section transverse to the longitudinal axis of the conductor so that the upper edges of the contact ribs facing the conductor end can penetrate somewhat into the conductor, which typically consists of copper or a copper alloy. In particular, the contact surface transverse to the longitudinal axis of the clamped conductor end piece on a zig-zag cross-section, in which between two contact ribs in each case a groove with z. B. is also provided triangular cross-section, so that the contact between the conductor end piece and the contact surface along a plurality of lines along the longitudinal axis of the clamped Leiterendstücks is formed.

Gemäß einer Ausführungsform der Erfindung ist die Kontaktfläche eben und die Kontaktrippen verlaufen entlang der Längsachse des geklemmten Leiterendstücks geradlinig. Das Leiterendstück verläuft in der Klemmposition parallel zu der Kontaktflächenebene. Dadurch wird eine große Kontaktlänge entlang der Längsachse des geklemmten Leiterendstücks erzielt.According to one embodiment of the invention, the contact surface is flat and the contact ribs are rectilinear along the longitudinal axis of the clamped conductor end. The conductor end piece extends in the clamping position parallel to the contact surface plane. This achieves a large contact length along the longitudinal axis of the clamped conductor end.

Alternativ kann die Kontaktfläche entlang der Längsachse des geklemmten Leiterendstücks in Richtung des Klemmschenkels bzw. des Leiterendstücks konvex gewölbt sein. Bei dieser Ausführungsform werden vorzugsweise der Wölbungsradius so groß und die Kanten der Kontaktrippen so scharfkantig ausgebildet, dass die Kontaktrippen entlang der Längsachse des geklemmten Leiterendstücks über eine ausgedehnte Länge entlang seiner Längsachse etwas in das Leiterendstücks eindringen. Je nach Anwendung kann es aber erwünscht sein, die Kontaktlänge des Leiterendstücks durch die Wölbung zu verkürzen. Es kann ggf. auch vorteilhaft sein, die Kontaktfläche ballig (zweidimensional konvex) oder sattelförmig auszubilden.Alternatively, the contact surface can be convexly curved along the longitudinal axis of the clamped conductor end piece in the direction of the clamping leg or of the conductor end piece. In this embodiment, preferably, the radius of curvature is so large and the edges of the contact ribs are formed so sharp that the contact ribs penetrate along the longitudinal axis of the clamped conductor end over an extended length along its longitudinal axis slightly into the Leiterendstücks. Depending on the application, it may be desirable to shorten the contact length of the conductor end by the curvature. It may also be advantageous be to form the contact surface convex (two-dimensionally convex) or saddle-shaped.

Versuche haben ergeben, dass der Rasterabstand zwischen den Kontaktrippen etwa in Bereich zwischen einem Drittel und einem Zwanzigstel des Maximaldurchmessers des elektrischen Leiters, für den die Federkraftanschlussklemme dimensioniert ist, beträgt. Die Anzahl der Kontaktrippen kann dabei vorzugsweise im Bereich zwischen etwa 5 und etwa 50 betragen. Dies sorgt für eine ausreichende Kontaktkraft einerseits und einen ausreichenden Reibschluss gegen Verdrehen des Leiters andererseits. Es soll aber nicht ausgeschlossen sein, dass ggf. mindestens zwei oder drei Kontaktrippen vorgesehen sind.Tests have shown that the grid spacing between the contact ribs is approximately in the range between one third and one twentieth of the maximum diameter of the electrical conductor for which the spring force connection terminal is dimensioned. The number of contact ribs may preferably be in the range between about 5 and about 50. This ensures a sufficient contact force on the one hand and a sufficient frictional engagement against rotation of the conductor on the other. However, it should not be ruled out that, if necessary, at least two or three contact ribs are provided.

Gemäß einer Ausführungsform der Erfindung weist das dielektrische Anschlussgehäuse einen Leitereinführtrichter auf, welcher die Einführrichtung des Leiters beim Einstecken vorgibt und den Leiter in der Klemmposition gegen grobes Verkippen abstützt. Hierdurch kann die korrekte Anlage des Leiterendstücks an der Kontaktfläche unterstützt werden. Insbesondere verläuft der Einführkanal parallel zu der Kontaktfläche.According to one embodiment of the invention, the dielectric connection housing has a conductor insertion funnel, which predetermines the insertion direction of the conductor during insertion and supports the conductor in the clamping position against gross tilting. As a result, the correct installation of the conductor end piece can be supported on the contact surface. In particular, the insertion channel runs parallel to the contact surface.

Ferner bevorzugt bildet das dielektrische Anschlussgehäuse auf der der Einführseite entgegen gesetzten Seite des Materialdurchzugs eine geschlossene Tasche, in welche das Leiterendstück jenseits der Klemmung eintaucht. Die Tasche besitzt einen Boden, welcher einen Anschlag für das stirnseitige Ende des Leiterendstücks beim Einstecken bildet.Further preferably, the dielectric terminal housing forms on the insertion side opposite side of the material passage a closed pocket, in which the Leiterendstück dips beyond the clamping. The bag has a bottom, which forms a stop for the front end of the conductor end piece during insertion.

Im Folgenden wird die Erfindung anhand von Ausführungsbeispielen und unter Bezugnahme auf die Figuren näher erläutert, wobei gleiche und ähnliche Elemente teilweise mit gleichen Bezugszeichen versehen sind und die Merkmale der verschiedenen Ausführungsbeispiele miteinander kombiniert werden können.In the following the invention will be explained in more detail by means of embodiments and with reference to the figures, wherein the same and similar elements are partially provided with the same reference numerals and the features of the various embodiments can be combined.

Kurzbeschreibung der FigurenBrief description of the figures

Es zeigen:

Fig. 1
eine Querschnittsdarstellung durch die Federkraftanschlussklemme mit in der Klemmposition eingestecktem Leiterendstück,
Fig. 2
eine ausschnittsweise Querschnittsdarstellung entlang der Linie 2-2 in Fig. 1,
Fig. 3
eine ausschnittsweise Querschnittsdarstellung entlang der Linie 3-3 in Fig. 1,
Fig. 4
eine ausschnittsweise perspektivische Querschnittsdarstellung entlang der Linie 3-3 in Fig. 1 ohne Leiter,
Fig. 5
eine ausschnittsweise perspektivische Querschnittsdarstellung entsprechend Fig. 4 einer weiteren Ausführungsform der Erfindung,
Fig. 6
eine ausschnittsweise Querschnittsdarstellung ähnlich Fig. 2 der Ausführungsform aus Fig. 5,
Fig. 7
eine Querschnittsdarstellung wie Fig. 1 mit einem dünneren Leiter,
Fig. 8
eine Querschnittsdarstellung wie Fig. 1 ohne Leiter,
Fig. 9
eine Querschnittsdarstellung durch die Federkraftanschlussklemme gemäß einer weiteren Ausführungsform mit in der Klemmposition eingestecktem Leiterendstück,
Fig. 10
eine Querschnittsdarstellung durch die Federkraftanschlussklemme gemäß einer weiteren Ausführungsform mit in der Klemmposition eingestecktem Leiterendstück,
Fig. 11
eine dreidimensionale Darstellung des Materialdurchzugs der Ausführungsform aus Fig. 10,
Fig. 12
eine dreidimensionale Darstellung eines Federkraftanschlussklemmenmoduls mit zwei Klemmstellen,
Fig. 13
eine dreidimensionale Darstellung der Stromschiene aus Fig. 12.
Show it:
Fig. 1
a cross-sectional view through the spring-loaded terminal with inserted in the clamping position conductor end piece,
Fig. 2
a partial cross-sectional view taken along the line 2-2 in Fig. 1 .
Fig. 3
a partial cross-sectional view along the line 3-3 in Fig. 1 .
Fig. 4
a fragmentary perspective cross-sectional view taken along the line 3-3 in Fig. 1 without ladder,
Fig. 5
a fragmentary perspective cross-sectional view corresponding Fig. 4 a further embodiment of the invention,
Fig. 6
a partial cross-sectional view similar Fig. 2 of the embodiment Fig. 5 .
Fig. 7
a cross-sectional view like Fig. 1 with a thinner conductor,
Fig. 8
a cross-sectional view like Fig. 1 without ladder,
Fig. 9
a cross-sectional view through the spring force terminal according to another Embodiment with inserted in the clamping position conductor end piece,
Fig. 10
a cross-sectional view through the spring force terminal according to another embodiment with inserted in the clamping position conductor end piece,
Fig. 11
a three-dimensional representation of the material passage of the embodiment Fig. 10 .
Fig. 12
a three-dimensional representation of a spring-loaded terminal module with two terminal points,
Fig. 13
a three-dimensional representation of the busbar Fig. 12 ,

Detaillierte Beschreibung der ErfindungDetailed description of the invention

Bezug nehmend auf Fig. 1 ist der Leiter 12 mit Kabelummantelung 14 und von der Kabelummantelung 14 abisoliertem Leiterendstück 16 in der Federkraftanschlussklemme 10 dargestellt. Die Federkraftanschlussklemme 10 weist eine Stromschiene 22 auf, welche senkrecht zur Zeichenebene verläuft. Die Stromschiene 22 weist einen Materialdurchzug 24 mit einem umlaufenden Metallkragen 26 auf. Typischerweise ist der Materialdurchzug 24 mit dem Metallkragen 26 aus einem Metallblech, aus dem die Stromschiene 22 einstückig hergestellt ist, herausgestanzt. Der Metallkragen 26 ist in diesem Beispiel ringförmig geschlossen, im Wesentlichen rechteckförmig ausgebildet und erstreckt sich von dem flachen Stromschienenstreifen 28 im Großen und Ganzen in Einführrichtung E (in der Fig. 1 von oben nach unten). Der rechteckig umlaufende Metallkragen 26 weist umlaufende Metallkragen-Innenwandflächen 30a bis 30d auf, von denen die Metallkragen-Innenwandflächen 30a und 30c senkrecht zur Zeichenebene verlaufen.Referring to Fig. 1 the conductor 12 with cable sheath 14 and stripped from the cable sheath 14 conductor end 16 in the spring-loaded terminal 10 is shown. The spring-cage terminal 10 has a busbar 22, which runs perpendicular to the plane of the drawing. The busbar 22 has a material passage 24 with a circumferential metal collar 26. Typically, the material passage 24 is punched out with the metal collar 26 from a metal sheet from which the bus bar 22 is made in one piece. The metal collar 26 is closed in this example, annular, substantially rectangular in shape and extends from the flat busbar strip 28 by and large in the insertion direction E (in the Fig. 1 from top to bottom). Of the Rectangular circumferential metal collar 26 has circumferential metal collar inner wall surfaces 30a to 30d, of which the metal collar inner wall surfaces 30a and 30c are perpendicular to the plane of the drawing.

Die Metallkragen-Innenwandfläche 30a liegt der Schenkelfeder 42 gegenüber und bildet die Kontaktfläche 52 der Stromschiene 22 für das abisolierte elektrische Leiterendstück 16.The metal collar inner wall surface 30a faces the leg spring 42 and forms the contact surface 52 of the bus bar 22 for the stripped electrical conductor end piece 16.

Die Schenkelfeder 42 besitzt einen Klemmschenkel 44 mit einem unteren Klemmschenkelende, welches die Klemmstelle 46 gegen das Leiterendstück 16 bildet. Die als im Wesentlichen U-förmig gebogene Blattfeder ausgebildete Schenkelfeder 42 weist noch einen Bogenfederbereich 48 und einen Halteschenkel 50 auf. Die Schenkelfeder 42 ist mit einem Halteauge 54 des dielektrischen Anschluss- oder Klemmengehäuses 5 im Bereich des Federbogens 48 und einer bogenförmigen Einhausung 56 in dem Kunststoff-Anschlussgehäuse 5 festgelegt. Der Halteschenkel 50 taucht in den Materialdurchzug 24 ein und stützt sich an dem Metallkragen 26 bzw. der Metallkragen-Innenwandfläche 30c ab. Die Schenkelfeder 42 klemmt mit ihrem Klemmschenkel, genauer dem die Klemmstelle 46 bildenden Ende des Klemmschenkels 44 das abisolierte Leiterendstück 16 gegen die Kontaktfläche 52. Hierzu taucht der Klemmschenkel 44 in den Materialdurchzug 24 ein, und zwar in Richtung der Einsteckrichtung E (in der Fig. 1 von oben). Demnach erstreckt sich der Klemmschenkel 44 in dieselbe Richtung wie der Metallkragen 26 der Stromschiene 22.The leg spring 42 has a clamping leg 44 with a lower clamping leg end, which forms the clamping point 46 against the conductor end 16. The leg spring 42 designed as a substantially U-shaped leaf spring still has a bow spring area 48 and a holding leg 50. The leg spring 42 is fixed to a retaining eye 54 of the dielectric terminal or terminal housing 5 in the region of the spring bow 48 and an arcuate housing 56 in the plastic connection housing 5. The holding leg 50 dips into the material passage 24 and is supported on the metal collar 26 or the metal collar inner wall surface 30c. The leg spring 42 clamps with its clamping leg, more precisely the terminal point 46 forming end of the clamping leg 44, the stripped conductor end 16 against the contact surface 52. For this dips the clamping leg 44 in the material passage 24, in the direction of insertion E (in the Fig. 1 from above). Accordingly, the clamping leg 44 extends in the same direction as the metal collar 26 of the busbar 22nd

Das elektrische Anschlussgehäuse 5 weist ferner eine geschlossene Tasche 58 unterhalb des Metallkragens 26 auf, welche das stirnseitige Ende 16a des abisolierten Leiterendstücks 16 aufnimmt bzw. umgibt. Hierbei bildet der Boden 60 der Tasche 58 einen Anschlag für das Leiterendstück 16 beim Einstecken des Leiters 12.The electrical connection housing 5 further has a closed pocket 58 below the metal collar 26 which receives or surrounds the front end 16a of the stripped conductor end piece 16. Here, the bottom 60 of the pocket 58 forms a stop for the conductor end piece 16 during insertion of the conductor 12.

Wie in der Fig. 1 zu erkennen ist, verläuft das Leiterendstück 16 parallel zu der Kontaktfläche 52 und liegt in diesem Beispiel über einen Großteil der Erstreckung des Metallkragens 26 entlang der Längsachse A des Leiters 12 an der in diesem Beispiel ebenen Kontaktfläche 52 an, um diese zu kontaktieren. Die Kontaktfläche 52 besitzt eine mit Kontaktrippen 62 versehene gerippte Oberfläche 64, wie am besten in den Fig. 2 bis 6 dargestellt ist.Like in the Fig. 1 As can be seen, the conductor end 16 extends parallel to the contact surface 52 and is in this example over a large extent of the extension of the metal collar 26 along the longitudinal axis A of the conductor 12 at the flat in this example contact surface 52 to contact them. The contact surface 52 has a ribbed surface 64 provided with contact ribs 62, as best shown in FIGS Fig. 2 to 6 is shown.

Das Anschlussgehäuse 5 weist ferner einen Leitereinstecktrichter 57 auf, welcher den Leiter 12 beim Einstecken und in der Klemmposition führt und im Wesentlichen die Einsteckrichtung E vorgibt. Der Leitereinstecktrichter 57 verläuft hierzu im Wesentlichen parallel zur Kontaktfläche 52. In diesem Beispiel verläuft die Einsteckrichtung E bzw. die Achse A des Leiters 12 sowie die Kontaktfläche 52 in einem schrägen Winkel zu dem Stromschienenstreifen 28.The connection housing 5 further has a conductor insertion funnel 57, which guides the conductor 12 during insertion and in the clamping position and essentially predetermines the insertion direction E. For this purpose, the conductor insertion funnel 57 runs essentially parallel to the contact surface 52. In this example, the insertion direction E or the axis A of the conductor 12 and the contact surface 52 extend at an oblique angle to the conductor rail strip 28.

Der Klemmschenkel 44 weist eine dem Leiter 12 zugewandte Vorwölbung 72 auf. Zum Lösen des Leiters aus der Federkraftanschlussklemme 10 wird ein Werkzeug, z.B. ein Schraubendreher durch die Werkzeugöffnung 59 des Anschlussgehäuses 5 eingeführt und die Klemme mit dem Werkzeug geöffnet, wobei die Vorwölbung 72 beim Zubiegen der Schenkelfeder 42 hilft.The clamping leg 44 has a protrusion 72 facing the conductor 12. To release the conductor from the spring force terminal 10, a tool, such as a screwdriver is inserted through the tool opening 59 of the terminal housing 5 and the terminal with the Tool opened, the protrusion 72 helps in the attachment of the leg spring 42.

Bezug nehmend auf Fig. 2 besitzen die Kontaktrippen 62 einen im Wesentlichen dreieckigen Querschnitt und erstrecken sich entlang der Achse A des Leiters 12. Die Kontaktrippen 62 bilden mit den dazwischen liegenden im Wesentlichen ebenfalls dreieckigen Riefen 66 die eindimensional gerippte Oberfläche 64, welche demnach einen regelmäßigen Zick-Zack-förmigen Querschnitt quer zur Achse A des Leiters 12 aufweist. Wie in Fig. 2 dargestellt ist, liegt das Leiterendstück 16 in der Klemmposition typischerweise an zumindest zwei der Kontaktrippen 62 linienförmig an. Je nach Andruckkraft der Schenkelfeder 42, Weichheit des Leitermaterials und der Größe und Scharfheit der Kontaktrippen 62 graben sich die Kontaktrippen 62 mehr oder weniger in das Leiterendstück 16 ein, so dass eine Anlage auch an mehr als zwei der Kontaktrippen 62 möglich ist. Dadurch bildet sich ein Kontaktbereich mit mehreren nebeneinander verlaufenden Kontaktlinien zwischen dem Leiterendstück 16 und der Kontaktfläche 52 aus.Referring to Fig. 2 The contact ribs 62 have a substantially triangular cross-section and extend along the axis A of the conductor 12. The contact ribs 62 form with the intervening substantially also triangular grooves 66, the one-dimensionally ribbed surface 64, which therefore has a regular zig-zag cross-section transverse to the axis A of the conductor 12 has. As in Fig. 2 is shown, the conductor end 16 is in the clamping position typically on at least two of the contact ribs 62 linear. Depending on the pressure force of the leg spring 42, the softness of the conductor material and the size and sharpness of the contact ribs 62, the contact ribs 62 more or less dig into the conductor end piece 16, so that an abutment on more than two of the contact ribs 62 is possible. As a result, a contact region with a plurality of contact lines extending between the conductor end piece 16 and the contact surface 52 forms.

Bezug nehmend auf Fig. 3 erstrecken sich die Kontaktrippen 62 über einen wesentlichen Teil der Länge entlang der Achse A des Leiters 12 über den Metallkragen 26 bzw. dessen Metallkragen-Innenwandfläche 30a.Referring to Fig. 3 The contact ribs 62 extend over a substantial portion of the length along the axis A of the conductor 12 via the metal collar 26 and its metal collar inner wall surface 30a.

Die Dimensionierung der Kontaktrippen 62 und der Riefen 66 ist am besten in Fig. 4 zu erkennen. Im Beispiel in Fig. 4 weist die gerippte Oberfläche 64 der Kontaktfläche 52 zwölf Kontaktrippen 62 auf, welche durch Einprägung der dazwischen liegenden Riefen 66 an der Metallkragen-Innenwandfläche 30a gebildet werden.The sizing of the contact ribs 62 and the grooves 66 is best in FIG Fig. 4 to recognize. In the example in Fig. 4 the ribbed surface 64 of the contact surface 52 twelve contact ribs 62, which by impressing the intervening grooves 66 are formed on the metal collar inner wall surface 30a.

Fig. 5 zeigt eine alternative Ausführungsform mit sechs Kontaktrippen 62, welche etwas kürzer ausgebildet sind, als in Fig. 4. Ferner haben die Riefen 66 zwischen den Kontaktrippen 62 einen größeren Abstand als in Fig. 4, so dass der Rasterabstand R der Kontaktrippen 62 größer ist als bei der Ausführungsform in Fig. 4. Fig. 5 shows an alternative embodiment with six contact ribs 62, which are slightly shorter than in Fig. 4 , Furthermore, the grooves 66 between the contact ribs 62 have a greater distance than in Fig. 4 such that the pitch R of the contact ribs 62 is greater than in the embodiment of FIG Fig. 4 ,

Bezug nehmend auf Fig. 6 haben die Kontaktrippen 62 einen trapezförmigen Querschnitt.Referring to Fig. 6 the contact ribs 62 have a trapezoidal cross-section.

Wie an einem Vergleich der Fig. 1 und 7 zu sehen ist, hängt bei der Federkraftanschlussklemme 10 aufgrund der Schwenkbewegung des Klemmschenkels 44 die vertikale Position der Klemmstelle 46 von der Dicke des elektrischen Leiters ab. Bei einem kleineren Durchmesser des elektrischen Leiters (Fig. 7) liegt die Klemmstelle 46 höher als bei einem größeren Durchmesser (Fig. 1). Die Federkraftanschlussklemme 10 ist für ein gewisses Intervall von Leiterdurchmessern konstruiert und zugelassen, z.B. für Leiterdurchmesser im Bereich von 0,5 mm bis 4 mm. Hierbei liegt die Klemmstelle 46 zumindest bei Leiterdurchmessern die kleiner sind als der maximal zugelassene Leiterdurchmesser oberhalb der Unterkante 52a der Kontaktfläche 52.How about a comparison of Fig. 1 and 7 can be seen, depends on the spring force terminal 10 due to the pivoting movement of the clamping leg 44, the vertical position of the nip 46 from the thickness of the electrical conductor. With a smaller diameter of the electrical conductor ( Fig. 7 ), the nip 46 is higher than a larger diameter ( Fig. 1 ). The spring force terminal 10 is designed and approved for a certain interval of conductor diameters, eg for conductor diameters in the range of 0.5 mm to 4 mm. Here, the clamping point 46 is at least at conductor diameters which are smaller than the maximum permissible conductor diameter above the lower edge 52a of the contact surface 52nd

Fig. 8 zeigt die Federkraftanschlussklemme 10 aus den Fig. 1 und 7 vor dem Einschieben des Leiters, wobei der Klemmschenkel 44 aufgrund der Vorspannung der Schenkelfeder 42 an der Kontaktfläche 52 anliegt. Fig. 8 shows the spring force terminal 10 from the Fig. 1 and 7 prior to insertion of the conductor, wherein the clamping leg 44 abuts against the contact surface 52 due to the bias of the leg spring 42.

Der Leiter 12 ist zwar durch den Leitereinführtrichter 57 relativ gut geführt, es verbleibt aber dennoch etwas Spiel, insbesondere bei dünnen Leitern, so dass der Leiter 12 in begrenztem Maße einer Verkippung unterliegen kann. Bei der in Fig. 1, 7 und 8 dargestellten Ausführungsform der Erfindung kann bei einer Verkippung des Leiters das Leiterendstück daher kurzfristig hauptsächlich mit der Unterkante 52a der Kontaktfläche 52 in Kontakt stehen, wenngleich dies grundsätzlich unerwünscht ist.Although the conductor 12 is guided relatively well by the conductor insertion funnel 57, there still remains some play, in particular in the case of thin conductors, so that the conductor 12 can be tilted to a limited extent. At the in Fig. 1 . 7 and 8th illustrated embodiment of the invention, the conductor end piece can therefore be in the short term mainly with the lower edge 52a of the contact surface 52 in contact with a tilt of the conductor, although this is generally undesirable.

Fig. 9 zeigt eine Federkraftanschlussklemme 10 gemäß einer abgewandelten Ausführungsform der Erfindung, nämlich mit entlang der Längsachse A konvex gewölbter Kontaktfläche 52. Der Wölbungsradius r der Kontaktfläche 52 ist so groß bemessen, dass aufgrund der Weichheit des Leiters (typischerweise Kupfer oder eine Kupferlegierung) das Leiterendstück 16 auf einer finiten Länge L entlag der Längsachse A mit der Kontaktfläche 52 in elektrischem Kontakt steht. Die Länge L sollte mindestens einige Zehntel Millimeter, besser noch einen Millimeter oder mehr betragen. Die Wölbung der Kontaktfläche 52 hat den Vorteil, dass bei einem leichten Verkippen des Leiters 12 trotzdem ein großflächiger elektrischer Kontakt zwischen dem Leiterendstück 16 und der Kontaktfläche 52 erhalten bleibt und das Leiterendstück gerade nicht von der Unterkante 52a beschädigt wird. Die Kontaktfläche 52 kann eindimensional, aber auch zweidimensional gewölbt sein. Die zweidimensionale Wölbung kann entweder ballig, d.h. in beiden Dimensionen der Ebene der Kontaktfläche 52 konvex geformt oder sattelförmig, d.h. entlang der Längsachse A konvex und quer zur Längsachse A konkav geformt sein. Fig. 9 shows a spring terminal 10 according to a modified embodiment of the invention, namely along the longitudinal axis A convexly curved contact surface 52. The radius of curvature r of the contact surface 52 is sized so large that due to the softness of the conductor (typically copper or a copper alloy), the conductor end 16 on a finite length L entlag the longitudinal axis A with the contact surface 52 is in electrical contact. The length L should be at least a few tenths of a millimeter, better still a millimeter or more. The curvature of the contact surface 52 has the advantage that with a slight tilting of the conductor 12, nevertheless, a large-area electrical contact between the conductor end piece 16 and the contact surface 52 is maintained and the conductor end piece is not damaged by the lower edge 52a. The contact surface 52 may be one-dimensional, but also curved two-dimensionally. The two-dimensional curvature can either convex, ie convexly shaped in both dimensions of the plane of the contact surface 52 or saddle-shaped, ie, be convex along the longitudinal axis A and transversely to the longitudinal axis A.

Letzteres kann die Größe der Anlagefläche des Leiterendstücks 16 an der Kontaktfläche 52 weiter vergrößern.The latter can further increase the size of the contact surface of the conductor end piece 16 at the contact surface 52.

Fig. 10 zeigt eine Federkraftanschlussklemme 10 gemäß einer weiteren abgewandelten Ausführungsform der Erfindung, nämlich mit verlängerter Kontaktfläche 52. Hierbei ist die der Schenkelfeder 42 gegenüberliegende Metallkragen-Innenwandfläche 30a nach unten verlängert. Die Metallkragen-Innenwandfläche 30a, bzw. die Kontaktfläche 52 ragen damit in Einsteckrichtung E über den übrigen Metallkragen 26 hinaus. Dadurch wird in vorteilhafter Weise einer Verkippung des Leiterendstück 16 entgegengewirkt und gewährleistet, dass das Leiterendstück 16 auf einer großen Länge L an der Kontaktfläche 52 anliegt. Dadurch wird ein Einschneiden der Unterkante 52a in das Leiterendstück 16 weitgehend vermieden und die Kontaktfläche vergrößert. Bei dieser Ausführungsform liegt die Klemmstelle 46 sogar bei dem maximal zugelassenen Leiterdurchmesser noch oberhalb der Unterkante 52a der Kontaktfläche 52. Fig. 11 zeigt einen Abschnitt der zugehörigen Stromschiene 22 mit dem Materialdurchzug 24 und der Schenkelfeder 42 in dreidimensionaler Darstellung. Fig. 10 shows a spring force terminal 10 according to another modified embodiment of the invention, namely with extended contact surface 52. Here, the leg spring 42 opposite metal collar inner wall surface 30a is extended downward. The metal collar inner wall surface 30a or the contact surface 52 thus project beyond the remaining metal collar 26 in the insertion direction E. This advantageously counteracts a tilting of the conductor end piece 16 and ensures that the conductor end piece 16 bears against the contact surface 52 over a large length L. As a result, cutting the lower edge 52a into the conductor end piece 16 is largely avoided and the contact area is increased. In this embodiment, the nip 46 is even above the lower edge 52a of the contact surface 52 even at the maximum permitted conductor diameter. Fig. 11 shows a portion of the associated bus bar 22 with the material passage 24 and the leg spring 42 in three-dimensional representation.

Fig. 12 zeigt eine Federkraftanschlussklemme 10 zum modularen Aufstecken auf eine Montageschiene (nicht dargestellt). Wie dem Fachmann bekannt ist, werden eine Vielzahl dieser Module 10 z.B. in der Gebäudeinstallationstechnik nebeneinander auf die Montageschiene gesteckt. Fig. 12 shows a spring terminal 10 for modular attachment to a mounting rail (not shown). As is known to those skilled in the art, a large number of these modules 10 are placed side by side on the mounting rail, for example in building installation technology.

Fig. 13 zeigt die Stromschiene 22 der Federkraftanschlussklemme 10 aus Fig. 12 in gewinkelter Form und mit zwei vertikal versetzt angeordneten Materialdurchzügen 24. Fig. 13 shows the busbar 22 of the spring-force connection terminal 10 Fig. 12 in angled form and with two vertically offset material passages 24.

Claims (11)

  1. A spring terminal block (10) comprising a power rail (22) and a leg spring (42) for connecting a stripped conductor end portion (16) of an electrical conductor (12);
    wherein the power rail (22) is made of a flat metal sheet material and has at least one material passage (24) which defines an insertion opening for the stripped conductor end portion (16);
    wherein the material passage (24) includes a ring-shaped metal collar (26) extending in the insertion direction, which has metal collar inner wall surfaces (30a - 30d) on its inner surface facing the insertion opening;
    wherein the leg spring (42) has a clamping leg (44) with a clamping point (46) immersing into the material passage (24);
    wherein the conductor end portion (16) inserted in the material passage (24) transversely to the power rail (22) is clamped by the spring force of the leg spring (42) between the clamping point (46) of the clamping leg (44) and the opposed metal collar inner wall surface (30a);
    wherein the metal collar inner wall surface (30a) opposed to the clamping point (46) of the clamping leg (44) forms a contact surface (52) for the conductor end portion (16), which extends along the longitudinal axis (A) of the clamped conductor end portion (16);
    characterized in that
    the contact surface (52) has contact ribs (62) projecting towards the clamping leg (44) and extending along the longitudinal axis (A) of the clamped conductor end portion (16), so that the stripped conductor end portion (16) in its clamped position engages and is in electrical contact with the contact ribs (62) over an extended length along its longitudinal axis (A).
  2. The spring terminal block (10) according to claim 1,
    characterized in that
    when the conductor end portion (16) is clamped in the clamping position, the clamping point (46) of the clamping leg (44) is located in the center or near the center of the contact surface (52) in the direction of the longitudinal axis (A) of the conductor end portion (16).
  3. The spring terminal block (10) according to any of the preceding claims, characterized in that the contact ribs (62) have a triangular, trapezoidal, rectangular, or wave-shaped cross section.
  4. The spring terminal block (10) according to claim 3,
    characterized in that
    a groove (66) is provided between two contact ribs (62) in each case, so that transversely to the longitudinal axis (A) of the clamped conductor end portion (16) the contact surface has a zig-zag shaped surface (64).
  5. The spring terminal block (10) according to any of the preceding claims, characterized in that the contact ribs (62) extend rectilinearly along the longitudinal axis (A) of the clamped conductor end portion (16).
  6. The spring terminal block (10) according to any of claims 1 to 4, characterized in that
    the contact surface (52) is convexly curved towards the clamping leg (44) along the longitudinal axis (A) of the clamped conductor end portion (16).
  7. The spring terminal block (10) according to claim 6,
    characterized in that
    the radius of curvature is so large and the edges of the contact ribs (62) are so sharp that along the longitudinal axis of the clamped conductor end portion the contact ribs (62) penetrate into the conductor end portion (16) over an extended length along the longitudinal axis (A) thereof.
  8. The spring terminal block (10) according to any of the preceding claims, characterized in that the pitch (R) of the contact ribs (62) is between one third and one-twentieth of the diameter of the electrical conductor for which the spring terminal block (10) is dimensioned.
  9. The spring terminal block (10) according to any of the preceding claims, characterized in that the spring terminal block (10) comprises a dielectric connector housing (5) in which the power rail (22) and the leg spring (42) are fixed, said dielectric connector housing (5) having a conductor insertion funnel (57) which defines the insertion direction (E) of the conductor (12) and supports the conductor (12) in the clamping position against heavy tilting.
  10. The spring terminal block (10) according to claim 9,
    characterized in that
    on the side of the material passage (24) opposite to the insertion side, the dielectric connector housing (5) defines a closed pocket (58) in which the front end (16a) of the conductor end portion (16) is immersed in the clamped position.
  11. The spring terminal block (10) according to any of the preceding claims, characterized in that
    the metal collar inner wall surface (30a) opposed to the clamping leg (44) protrudes beyond the metal collar (26) in the insertion direction (E).
EP10711546.1A 2009-10-22 2010-02-12 Spring terminal block Active EP2491619B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009050367A DE102009050367A1 (en) 2009-10-22 2009-10-22 Spring clamp connection terminal
PCT/EP2010/000892 WO2011047740A1 (en) 2009-10-22 2010-02-12 Spring terminal block

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EP2491619A1 EP2491619A1 (en) 2012-08-29
EP2491619B1 true EP2491619B1 (en) 2014-11-19

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US (1) US8858269B2 (en)
EP (1) EP2491619B1 (en)
JP (1) JP5579860B2 (en)
CN (1) CN102640356B (en)
DE (1) DE102009050367A1 (en)
ES (1) ES2527171T3 (en)
WO (1) WO2011047740A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018128431A1 (en) * 2018-11-13 2020-05-14 Phoenix Contact Gmbh & Co. Kg Terminal arrangement for connecting an electrical conductor
DE102018128431B4 (en) 2018-11-13 2020-06-10 Phoenix Contact Gmbh & Co. Kg Terminal arrangement for connecting an electrical conductor

Also Published As

Publication number Publication date
US8858269B2 (en) 2014-10-14
EP2491619A1 (en) 2012-08-29
US20120264339A1 (en) 2012-10-18
CN102640356A (en) 2012-08-15
ES2527171T3 (en) 2015-01-21
JP2013508898A (en) 2013-03-07
JP5579860B2 (en) 2014-08-27
DE102009050367A1 (en) 2011-04-28
CN102640356B (en) 2015-01-21
WO2011047740A1 (en) 2011-04-28

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