EP2956990A1 - Spring-loaded clamping element and connecting terminal - Google Patents

Spring-loaded clamping element and connecting terminal

Info

Publication number
EP2956990A1
EP2956990A1 EP14703879.8A EP14703879A EP2956990A1 EP 2956990 A1 EP2956990 A1 EP 2956990A1 EP 14703879 A EP14703879 A EP 14703879A EP 2956990 A1 EP2956990 A1 EP 2956990A1
Authority
EP
European Patent Office
Prior art keywords
clamping
spring
busbar
section
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14703879.8A
Other languages
German (de)
French (fr)
Other versions
EP2956990B1 (en
Inventor
Hans-Josef Köllmann
Wolfgang Gerberding
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.)
Wago Verwaltungs GmbH
Original Assignee
Wago Verwaltungs GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wago Verwaltungs GmbH filed Critical Wago Verwaltungs GmbH
Publication of EP2956990A1 publication Critical patent/EP2956990A1/en
Application granted granted Critical
Publication of EP2956990B1 publication Critical patent/EP2956990B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H01R4/48—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
    • 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
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/48365—Spring-activating arrangements mounted on or integrally formed with the spring housing with integral release means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/50—Bases; Cases formed as an integral body
    • 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

Definitions

  • the invention relates to a spring-loaded clamping element with a busbar and a clamping spring, a plant leg, an adjoining the plant leg spring bow and an adjoining the spring bow clamping leg with an extending from the spring bow in the opposite direction to the plant leg main portion and aligned in the direction of the busbar Clamping portion, wherein the clamping portion has a clamping edge at a free end of the clamping portion for forming a nip between the clamping edge and the bus bar for clamping an electrical conductor.
  • the invention further relates to a connection terminal with an insulating material housing and with at least one such Federkraftklemman- circuit in the insulating housing.
  • Spring-loaded clamping element with U-shaped bent leaf springs are known in many forms.
  • DE 196 54 61 1 B4 discloses a spring clamp connection for single or multiwire electrical conductors with a busbar section and a U-shaped leaf spring.
  • the busbar piece has a holding leg and a contact leg, which together form a corner angle.
  • the holding limb in this case serves to hold the leaf spring and is arranged with its back transversely to the conductor insertion direction and has an opening for the passage of the electrical conductor.
  • the contact leg connects directly to the vertex of the corner angle of the bracket and extends from this in the conductor insertion direction away.
  • the leaf spring is shaped in the manner of a U-shaped loop with a rear spring bow and two adjoining spring legs, in which one is designed as a free clamping leg which extends with its free end in the conductor insertion opening and at an acute angle to the contact Donate! of the busbar piece is directed.
  • the free clamping portion is slightly bent relative to a main portion of the contact leg in the direction of the busbar, so that the main portion is at a smaller acute angle than the free clamping portion of the clamping leg to the busbar.
  • DE 10 2004 045 026 B3 shows an electrical connection or connection terminal with a clamping leg, starting from a main section, initially approximately parallel to the busbar or in the outgoing from the spring bow extension direction of the support leg direction bent and thus to its free end back to the busbar is bent back.
  • the clamping leg of the clamping spring has a kink, which is aligned in the direction of the spring force of the clamping leg, so that an improved point of application of the tip of an actuating tool for opening the clamping spring is realized by the kink.
  • the object is achieved with the spring force clamping element with the features of claim 1 and by the connection terminal with the features of claim 1 1.
  • Advantageous embodiments are described in the subclaims.
  • the clamping section has a first section bent over from the main section in the direction of the busbar and a second section adjoining the first section and bent back in the direction of the extent of the main section second section has the clamping edge.
  • the first portion In a rest position of the clamping spring without plugged electrical conductor, in which the clamping edge rests on the busbar, the first portion is in the outgoing from the spring bow extension direction of the clamping spring at an obtuse angle to the busbar, while the second section is at an acute angle to the busbar.
  • the bent in the direction of the busbar first section is much more inclined relative to the conductor insertion direction and the busbar and is at an obtuse angle to the plane of the adjacent to the clamping edge portion of the busbar.
  • the first section is transverse to the Porterereinsteckraum and prevents direct insertion, in particular a multi-wire electrical conductor which impinges when inserting blunt on the first section during insertion.
  • the clamping point formed by the clamping edge and the busbar can therefore be opened by moving the clamping leg of the clamping spring away from the busbar in the direction of the plant leg first.
  • the electrical conductor can then between busbar and Clamping edge of the clamping spring are passed to then close the clamping spring again, so that the clamping edge of the clamping spring presses by the spring force of the clamping spring on the electrical conductor and this pressed against the busbar.
  • a surface pressure via the clamping edge on the electrical conductor and on an opposite contact edge of the busbar is exerted by the spring force of the clamping spring.
  • the first section is preferably in the rest position at an angle of 90 to 120 degrees to the busbar.
  • the first section can preferably in a reduced by the tilt angle of the busbar angle to the conductor insertion direction, d. H. at an angle of about 70 to less than 120 degrees in practice.
  • the second section is preferably in the rest position at an angle of about 10 to 60 degrees, preferably from about 30 to 60 degrees to the busbar.
  • the internal angle between the first portion and the second portion of the clamping portion about 70 to 170 degrees, preferably from about 90 to 170 degrees. This ensures, on the one hand, that direct plugging of a multi-wire electrical conductor is prevented by the first section and, on the other hand, that an electrical conductor is mechanically and electrically securely clamped.
  • the clamping portion is narrower than the main portion of the clamping spring. This ensures that the clamping spring has a relation to the clamping portion laterally projecting edge region, which can be used to actuate the clamping spring.
  • the spring force of the clamping spring is increased in comparison with an embodiment in which the main portion is just as narrow as the clamping portion.
  • the busbar has a contact edge which forms the nip with the clamping edge of the clamping spring. Due to the formation of a defined contact edge on the busbar, the clamping force of the clamping spring is concentrated on this contact edge and thus optimizes the surface pressure resulting from the spring force of the clamping spring.
  • the bus bar has a frame element with two spaced-apart side webs and a crosspiece connecting the side webs together and a conductor lead-through opening delimited by the side webs and the cross web.
  • the frame member extends away from the busbar in the direction of the plant leg of the clamping spring, so that the plant leg can be stored on the cross bar.
  • the plant leg is mounted in the crosspiece.
  • the frame member may be formed integrally with the bus bar or be a separate part from the bus bar. It is also conceivable that the frame member of the busbar integral with the clamping spring as Ver extension of the contact section is formed and mounted in the busbar.
  • a self-supporting spring force clamping element is provided in which the clamping spring is fixed on the busbar via the frame member.
  • This self-supporting spring force clamping element can then be installed in such an assembled manner in an insulating housing of a connecting terminal and the connecting terminal then closed to complete the same.
  • connection terminal with an insulating material housing and at least one spring force clamping element described above is preferably designed so that the insulating housing has at least one conductor insertion opening extending in a conductor insertion direction, which opens into a conductor receiving space between the main portion and busbar, wherein the bent first portion of the clamping portion in Angle of about 70 to 120 degrees to the conductor insertion direction is transverse to the conductor feedthrough direction.
  • Figure 1 side view of a spring-loaded clamping element with clamping spring, busbar and frame member;
  • FIG. 1 A first figure.
  • Figure 4 side sectional view of a connection terminal with built-in spring force clamping element with the operating lever open;
  • Figure 5 side sectional view of the connection terminal of Figure 4 with the operating lever closed.
  • FIG. 1 shows a side view of a spring force clamping element 1 with a busbar 2 and a clamping spring 3.
  • the clamping spring 3 is bent in a U-shape and has a bearing leg 4 and an adjoining spring bow 5, which merges into a clamping leg 6.
  • the clamping leg 6 has at its free end portion in the direction of the busbar aligned clamping portion 7.
  • This clamping portion 7 connects to a main portion 8 of the clamping leg 6, wherein the main portion 8 extends from the spring bow 5 starting.
  • This main section 8 is approximately parallel to the conductor insertion direction LR (conductor insertion direction) and the extension direction of the adjacent abutment leg 4.
  • clamping section 7 adjoining the main section 8 has a first section 9 bent over from the main section 8 in the direction of the busbar 2 and an adjoining second section 10.
  • the second section 10 has at its free end a clamping edge 1 1.
  • first portion 9 is substantially at an obtuse angle a to the busbar 2, which is substantially greater than the angle ß of the second portion 10 to the busbar 2.
  • the second section 10 is at an acute angle to the busbar 2, so that the angle ß ⁇ 90 degrees.
  • the angle ß is about 50 degrees.
  • the first portion 9, however, is at an obtuse angle a (a> 90 degrees) to the busbar and is in the illustrated embodiment about 105 degrees.
  • a a> 90 degrees
  • the first section 9 is transverse to the conductor insertion direction LR and thus transversely in the conductor insertion opening of an insulating material.
  • An inserted electrical conductor thus stumps on the first portion 9, so that an automatic opening of the clamping spring prevented by lifting the clamping portion 7 of the busbar 2, in particular in a multi-wire electrical conductor or such automatic opening is at least difficult.
  • the first section 9 is preferably longer than the second section 10.
  • busbar 2 is slightly inclined with respect to the conductor insertion direction LR.
  • An obtuse angle of the first section 9 to the busbar 2 is therefore also understood to mean an angle of approximately 70 to 150 degrees of the first section 9 to the conductor insertion direction LR.
  • the plant leg 4 is mounted with a curved free end 15 in the frame member 12 such that the bent free end 15 of the support leg 4, the upper transverse edge 14 of the frame member 12 engages under.
  • the abutment leg 4 is thus held on the frame member 12, while the clamping portion 7 of the clamping spring 3 exerts a force against the opposing busbar 2.
  • the spring force clamping element 1 is thus carried out self-supporting.
  • FIG. 2 shows a side sectional view of the spring force clamping element 1 from FIG. It is clearer that a conductor lead-through opening 16 of the frame member 12 is limited by edge webs and the upper transverse web 14 and the lower main portion of the bus bar 2. It can also be seen that the free bent end 15 of the support leg 4 is suspended under the upper transverse web 14.
  • FIG. 3 shows a perspective view of the spring force clamping element 1 from FIGS. 1 and 2.
  • the busbar 2 can extend transversely to the direction of arrangement of a plurality of clamping springs 3, so that the clamping springs 3 share a common busbar 2.
  • the clamped to the individual Federkraftklemmanischen say 1 electrical conductors can be electrically connected to each other via the common busbar 2.
  • the first portion 9 of the clamping portion 7 of the clamping leg 6 of the clamping springs 3 is transverse to the conductor insertion direction LR and approximately parallel to the extension direction of the frame members 12.
  • clamping springs 3 are each arranged at a distance from each other and are mounted in each case an associated frame member 12.
  • the frame members 12 are spaced apart, so that between adjacent side bars 13 of the adjacent frame members 12, a gap is present. This can be used for receiving portions of an actuating lever, not shown, and / or a housing intermediate wall.
  • FIG. 4 shows a side view of an embodiment of a connection terminal 17 with an insulating housing 18 into which the spring-force clamping element 1 described above is installed.
  • the insulating housing 18 is designed in two parts and has a housing part 19 made of insulating material, in the front side, a conductor insertion opening 20 is introduced.
  • the conductor insertion opening 20 extends in a conductor insertion direction LR.
  • an actuating lever 21 is further installed in the insulating housing 18.
  • This actuating lever 21 is mounted with a part-circular bearing portion 22 by means of a partially circular bearing contour 23 of the insulating housing 18 adapted thereto.
  • the bearing portion 22 is located in the width direction at least partially laterally offset next to the spring force clamping element 1 and in the height direction in a space between the plane of the busbar 2 and the plane of the contact leg 4 of the clamping spring 3.
  • the operating lever 21 is designed as a U-shaped operating lever and has two spaced sidewall portions 24 extending from the Storage area 22 tapers towards the free end. In the region of the free end, the side wall portions 24 are connected to each other via a transverse grip plate 25.
  • the space formed between side wall portions 24 and handle plate 25 can then be used to receive the outer wall of the insulating housing 18 and partially also of the underlying spring clamping element 1, to provide in this way a compact connecting terminal 17.
  • the bearing portion 22 has an actuating contour 26 which is in the illustrated open state of the actuating lever 21 in engagement with the clamping leg 6.
  • actuating contour 26 which is in the illustrated open state of the actuating lever 21 in engagement with the clamping leg 6.
  • a lateral edge region of the clamping leg 6 rests on the actuating contour 26, so that the second portion 10 of the clamping leg 6 is displaced away from the busbar 2 in the direction of the plant leg 4 against the clamping force of the clamping spring 3.
  • the nip is opened for an electrical conductor to be connected and an electrical conductor can be passed with its free, stripped end in the conductor insertion direction LR through the conductor insertion opening 20.
  • the free end of an electrical conductor (not shown) then opens into a conductor receiving space 27, which, viewed in the conductor insertion direction LR, lies behind the frame element 12.
  • the insulating housing 18 is closed after installation of the operating lever 21 and the spring force clamping element 1 by means of a cover 28, the rear side, d. H. opposite to the conductor insertion opening 20 is latched to the housing part 19.
  • FIG. 5 shows a side view of the connection clamp 17 from FIG. 4 with the actuating lever 21 closed. It is clear that now the actuating contour 26 no longer acts on the clamping leg 6 of the clamping spring 3, so that the clamping edge 1 1 of the clamping leg 6 is seated on the busbar 2. In the event of a jammed This ladder would then be located between the clamping edge 1 1 and a contact edge 29 of the busbar 2, so that the clamping edge 1 1 and the contact edge 29 form a nip. An electrical conductor would then be clamped by means of the force of the clamping spring 3 at the terminal point and mechanically secured by the standing at an acute angle to the busbar 2 and the conductor insertion direction LR and the clamped electrical conductor first section 10 before pulling out. JG / me-jl

Abstract

A spring-loaded clamping element (1) is described having a bus bar (2) and a clamping spring (3) that has a contact limb (4), a spring arc (5) adjoining said contact limb (4) and a clamping limb (6) adjoining said spring arc (5), said clamping limb having a main portion (8) that extends from the spring arc (5) and a clamping portion (7) oriented in the direction of the bus bar (2). The clamping portion (7) has a clamping edge (11) at a free end of the clamping portion (7) for forming a clamping point between the clamping edge (11) and the bus bar (2) for clamping an electrical conductor. The clamping portion (7) has a first portion (9) which is bent from the main portion (8) in the direction of the bus bar (2) and a second portion (10) which has the clamping edge (11), adjoins the first portion (9) and is bent again back in the direction of extension of the main portion (8). When the clamping spring (3) is in a resting position in which there is no electrical conductor inserted and the clamping edge (11) rests on the bus bar (2), the first portion (9), viewed in the direction of extension (FR) of the clamping spring (3) starting from the spring arc (5), is at an obtuse angle α to the bus bar (2) and the second portion (10) is at an acute angle ß to the bus bar (2).

Description

Federkraftklemmelement und Verbindungsklemme  Spring-loaded clamping element and connecting terminal
Die Erfindung betrifft ein Federkraftklemmelement mit einer Stromschiene und einer Klemmfeder, die einen Anlageschenkel, einen sich an den Anlageschenkel anschließenden Federbogen und einen sich an den Federbogen anschließenden Klemmschenkel mit einem sich vom Federbogen in entgegengesetzte Richtung zum Anlageschenkel erstreckenden Hauptabschnitt und einen in Richtung der Stromschiene ausgerichteten Klemmabschnitt hat, wobei der Klemmabschnitt eine Klemmkante an einem freien Ende des Klemmabschnitt zur Bildung einer Klemmstelle zwischen der Klemmkante und der Stromschiene zum Anklemmen eines elektrischen Leiters aufweist. The invention relates to a spring-loaded clamping element with a busbar and a clamping spring, a plant leg, an adjoining the plant leg spring bow and an adjoining the spring bow clamping leg with an extending from the spring bow in the opposite direction to the plant leg main portion and aligned in the direction of the busbar Clamping portion, wherein the clamping portion has a clamping edge at a free end of the clamping portion for forming a nip between the clamping edge and the bus bar for clamping an electrical conductor.
Die Erfindung betrifft weiterhin eine Verbindungsklemme mit einem Isolierstoffgehäuse und mit mindestens einem solchen Federkraftklemman- schluss in dem Isolierstoffgehäuse. The invention further relates to a connection terminal with an insulating material housing and with at least one such Federkraftklemman- circuit in the insulating housing.
Federkraftklemmelement mit U-förmig gebogenen Blattfedern sind in vielfältiger Form bekannt. DE 196 54 61 1 B4 offenbart einen Federkraft- klemmanschluss für ein- oder mehrdrähtige elektrische Leiter mit einem Stromschienestück und einer U-förmigen Blattfeder. Das Stromschienenstück hat einen Halteschenkel und einen Kontaktschenkel, die miteinander einen Eckwinkel bilden. Der Halteschenkel dient hierbei zur Halterung der Blattfeder und ist mit seinem Rücken querstehend zur Leitereinführungsrichtung angeordnet und weist einen Durchbruch zum Hindurchstecken des elektrischen Leiters auf. Der Kontaktschenkel schließt direkt im Scheitel des Eckwinkels des Haltewinkels an und erstreckt sich von diesem in Leitereinführungsrichtung hinweg. Die Blattfeder ist in Art einer U-förmig offenen Schlaufe mit einem rückwärtigen Federbogen und zwei daran anschließenden Federschenkel geformt, bei denen einer als freier Klemmschenkel ausgebildet ist, der sich mit seinem freien Ende in Leitereinführungsöffnung erstreckt und mit einem spitzen Winkel gegen den Kontakt- schenke! des Stromschienenstücks gerichtet ist. Der freie Klemmabschnitt ist gegenüber einem Hauptabschnitt des Kontaktschenkels in Richtung zur Stromschiene leicht umgebogen, so dass der Hauptabschnitt in einem geringeren spitzen Winkel als der freie Klemmabschnitt des Klemmschenkels zur Stromschiene steht. Spring-loaded clamping element with U-shaped bent leaf springs are known in many forms. DE 196 54 61 1 B4 discloses a spring clamp connection for single or multiwire electrical conductors with a busbar section and a U-shaped leaf spring. The busbar piece has a holding leg and a contact leg, which together form a corner angle. The holding limb in this case serves to hold the leaf spring and is arranged with its back transversely to the conductor insertion direction and has an opening for the passage of the electrical conductor. The contact leg connects directly to the vertex of the corner angle of the bracket and extends from this in the conductor insertion direction away. The leaf spring is shaped in the manner of a U-shaped loop with a rear spring bow and two adjoining spring legs, in which one is designed as a free clamping leg which extends with its free end in the conductor insertion opening and at an acute angle to the contact Donate! of the busbar piece is directed. The free clamping portion is slightly bent relative to a main portion of the contact leg in the direction of the busbar, so that the main portion is at a smaller acute angle than the free clamping portion of the clamping leg to the busbar.
DE 10 2004 045 026 B3 zeigt eine elektrische Anschluss- oder Verbindungsklemme mit einem Klemmschenkel, der von einem Hauptabschnitt ausgehend zunächst annährend parallel zur Stromschiene bzw. in die vom Federbogen ausgehende Erstreckungsrichtung des Anlageschenkels weisende Richtung umgebogen und damit zu seinem freien Ende wieder in Richtung Stromschiene zurückgebogen ist. Damit weist der Klemmschenkel der Klemmfeder einen Knick auf, der in Richtung der Federkraft des Klemmschenkels ausgerichtet ist, so dass durch den Knick ein verbesserter Angriffspunkt für die Spitze eines Betätigungswerkzeugs zum Öffnen der Klemmfeder realisiert ist. DE 10 2004 045 026 B3 shows an electrical connection or connection terminal with a clamping leg, starting from a main section, initially approximately parallel to the busbar or in the outgoing from the spring bow extension direction of the support leg direction bent and thus to its free end back to the busbar is bent back. Thus, the clamping leg of the clamping spring has a kink, which is aligned in the direction of the spring force of the clamping leg, so that an improved point of application of the tip of an actuating tool for opening the clamping spring is realized by the kink.
Weiterhin ist aus DE 10 2005 048 972 A1 eine Leiterplattenanschluss- klemme mit Federkraftklemmanschluss bekannt, bei dem eine U-förmig gebogene Klemmfeder einen gegen eine Stromschiene gerichteten Klemmschenkel hat. Dieser Klemmschenkel ist im freien Endbereich leicht gekrümmt ausgeführt. Furthermore, from DE 10 2005 048 972 A1 a printed circuit board terminal with spring terminal connection is known, in which a U-shaped bent clamping spring has a directed against a busbar clamping leg. This clamping leg is slightly curved in the free end.
Ausgehend hiervon ist es Aufgabe der vorliegenden Erfindung ein verbessertes Federkraftklemmelement und eine verbesserte Verbindungsklemme zu schaffen, bei der einem Direktstecken von flexiblen Leitern entgegengewirkt wird. Based on this, it is an object of the present invention to provide an improved spring-loaded clamping element and an improved connection terminal, in which a direct insertion of flexible conductors is counteracted.
Die Aufgabe wird mit dem Federkraftklemmelement mit den Merkmalen des Anspruchs 1 sowie durch die Verbindungsklemme mit den Merkmalen des Anspruchs 1 1 gelöst. Vorteilhafte Ausführungsformen sind in den Unteransprüchen beschrieben. Für ein gattungsgemäßes Federkraftklemmelement und einer Verbindungsklemme mit einem solchen Federkraftklemmelement wird vorgeschlagen, dass der Klemmabschnitt einen von dem Hauptabschnitt in Richtung Stromschiene umgebogenen ersten Abschnitt und einen sich an den ersten Abschnitt anschließenden, in Richtung der Erstreckung des Hauptabschnitts wieder zurückgebogenen zweiten Abschnitt hat, wobei der zweite Abschnitt die Klemmkante aufweist. In einer Ruhelage der Klemmfeder ohne eingesteckten elektrischen Leiter, bei dem die Klemmkante auf der Stromschiene ruht, steht der erste Abschnitt in der vom Federbogen ausgehenden Erstreckungsrichtung der Klemmfeder gesehen im stumpfen Winkel zur Stromschiene, während der zweite Abschnitt im spitzen Winkel zur Stromschiene steht. The object is achieved with the spring force clamping element with the features of claim 1 and by the connection terminal with the features of claim 1 1. Advantageous embodiments are described in the subclaims. For a generic spring-loaded clamping element and a connection terminal with such a spring-loaded clamping element, it is proposed that the clamping section has a first section bent over from the main section in the direction of the busbar and a second section adjoining the first section and bent back in the direction of the extent of the main section second section has the clamping edge. In a rest position of the clamping spring without plugged electrical conductor, in which the clamping edge rests on the busbar, the first portion is in the outgoing from the spring bow extension direction of the clamping spring at an obtuse angle to the busbar, while the second section is at an acute angle to the busbar.
Damit wird erreicht, dass ein elektrischer Leiter mit dem im spitzen Winkel zur Stromschiene stehenden zweiten Abschnitt mit Hilfe der Federkraft der Klemmfeder an der Stromschiene angeklemmt wird und ein Zurückziehen des elektrischen Leiters durch Verkrallen der Klemmkante an dem elektrischen Leiter verhindert wird. Dies wird durch den spitzen Winkel des zweiten Abschnitts zur Stromschiene erreicht. This ensures that an electrical conductor is clamped to the stationary at an acute angle to the busbar second section by means of the spring force of the clamping spring on the busbar and retraction of the electrical conductor is prevented by clawing the clamping edge on the electrical conductor. This is achieved by the acute angle of the second section to the busbar.
Der in Richtung Stromschiene umgebogene erste Abschnitt hingegen ist relativ zur Leitereinführungsrichtung und zur Stromschiene wesentlich stärker geneigt und steht im stumpfen Winkel zur Ebene des an die Klemmkante angrenzenden Bereichs der Stromschiene. Damit steht der erste Abschnitt quer zur Leitereinsteckrichtung und verhindert ein direktes Einstecken insbesondere eines mehrdrähtigen elektrischen Leiters, der beim Einführen stumpf auf dem ersten Abschnitt beim Einführen auftrifft. Die durch die Klemmkante und die Stromschiene gebildete Klemmstelle kann daher zunächst durch Verlagerung des Klemmschenkels der Klemmfeder von der Stromschiene weg in Richtung Anlageschenkel geöffnet werden. Der elektrische Leiter kann dann zwischen Stromschiene und Klemmkante der Klemmfeder hindurchgeführt werden, um anschließend die Klemmfeder wieder zu schließen, so dass die Klemmkante der Klemmfeder durch die Federkraft der Klemmfeder auf den elektrischen Leiter drückt und diesen gegen die Stromschiene presst. Damit wird durch die Federkraft der Klemmfeder eine Flächenpressung über die Klemmkante auf den elektrischen Leiter und auf eine gegenüberliegende Kontaktkante der Stromschiene ausgeübt. The bent in the direction of the busbar first section, however, is much more inclined relative to the conductor insertion direction and the busbar and is at an obtuse angle to the plane of the adjacent to the clamping edge portion of the busbar. Thus, the first section is transverse to the Leiterereinsteckrichtung and prevents direct insertion, in particular a multi-wire electrical conductor which impinges when inserting blunt on the first section during insertion. The clamping point formed by the clamping edge and the busbar can therefore be opened by moving the clamping leg of the clamping spring away from the busbar in the direction of the plant leg first. The electrical conductor can then between busbar and Clamping edge of the clamping spring are passed to then close the clamping spring again, so that the clamping edge of the clamping spring presses by the spring force of the clamping spring on the electrical conductor and this pressed against the busbar. Thus, a surface pressure via the clamping edge on the electrical conductor and on an opposite contact edge of the busbar is exerted by the spring force of the clamping spring.
Für die Ausrichtung des ersten Abschnitts ist somit entscheidend, dass dieser quer zur Leitereinsteckrichtung steht, um ein direktes Einstecken eines mehrdrähtigen elektrischen Leiters im Nennquerschnitt des Federkraftklemmelementes, für den dieser ausgelegt ist, sicher zu verhindern. Für die Ausrichtung des zweiten Abschnitts im spitzen Winkel hingegen ist entscheidend, dass durch den spitzen Winkel ein sicheres Anklemmen eines elektrischen Leiters und Halten desselben an der Klemmstelle gewährleistet ist. For the orientation of the first section is thus crucial that it is transverse to the Leiterereinsteckrichtung to prevent a direct insertion of a stranded electrical conductor in the nominal cross section of the spring force clamping element, for which this is designed to safely. For the alignment of the second section at an acute angle, on the other hand, it is crucial that the acute angle ensures secure clamping of an electrical conductor and holding it at the clamping point.
Der erste Abschnitt steht dabei bevorzugt in der Ruhelage in einem Winkel von 90 bis 120 Grad zur Stromschiene. Einer gegenüber der Leitereinführungsrichtung, die im Wesentlichen durch die Erstreckungsrichtung einer Leitereinführungsöffnung in einem Isolierstoffgehäuse einer Verbindungsklemme vorgegeben ist, kann der erste Abschnitt bevorzugt in einem um den Kippwinkel der Stromschiene reduzierten Winkel zur Leitereinführungsrichtung, d. h. in einem Winkel von in der Praxis etwa 70 bis weniger als 120 Grad stehen. The first section is preferably in the rest position at an angle of 90 to 120 degrees to the busbar. One opposite to the conductor insertion direction, which is predetermined essentially by the direction of extension of a conductor insertion opening in an insulating housing of a connection terminal, the first section can preferably in a reduced by the tilt angle of the busbar angle to the conductor insertion direction, d. H. at an angle of about 70 to less than 120 degrees in practice.
Der zweite Abschnitt steht bevorzugt in der Ruhelage in einem Winkel von etwa 10 bis 60 Grad, bevorzugt von etwa 30 bis 60 Grad zur Stromschiene. The second section is preferably in the rest position at an angle of about 10 to 60 degrees, preferably from about 30 to 60 degrees to the busbar.
In einer bevorzugten Ausführungsform beträgt der Innenwinkel zwischen dem ersten Abschnitt und dem zweiten Abschnitt des Klemmabschnitts etwa 70 bis 170 Grad, bevorzugt von etwa 90 bis 170 Grad. Damit wird einerseits sichergestellt, dass durch den ersten Abschnitt ein Direktstecken eines mehrdrähtigen elektrischen Leiters verhindert wird und andererseits ein elektrischer Leiter mechanisch und elektrisch sicher angeklemmt wird. In a preferred embodiment, the internal angle between the first portion and the second portion of the clamping portion about 70 to 170 degrees, preferably from about 90 to 170 degrees. This ensures, on the one hand, that direct plugging of a multi-wire electrical conductor is prevented by the first section and, on the other hand, that an electrical conductor is mechanically and electrically securely clamped.
Weiterhin ist es vorteilhaft, wenn der Klemmabschnitt schmaler als der Hauptabschnitt der Klemmfeder ist. Damit wird erreicht, dass die Klemmfeder einen gegenüber dem Klemmabschnitt seitlich überstehenden Randbereich hat, der zur Betätigung der Klemmfeder genutzt werden kann. Zudem wird durch die größere Breite der Klemmfeder im Hauptabschnitt die Federkraft der Klemmfeder im Vergleich zu einer Ausführungsform, bei der der Hauptabschnitt genauso schmal wie der Klemmabschnitt ist, vergrößert. Weiterhin ist es vorteilhaft, wenn die Stromschiene eine Kontaktkante hat, die mit der Klemmkante der Klemmfeder die Klemmstelle bildet. Durch die Ausbildung einer definierten Kontaktkante an der Stromschiene wird die Klemmkraft der Klemmfeder auf diese Kontaktkante konzentriert und damit die aus der Federkraft der Klemmfeder resultierende Flächenpressung optimiert. Furthermore, it is advantageous if the clamping portion is narrower than the main portion of the clamping spring. This ensures that the clamping spring has a relation to the clamping portion laterally projecting edge region, which can be used to actuate the clamping spring. In addition, due to the greater width of the clamping spring in the main portion, the spring force of the clamping spring is increased in comparison with an embodiment in which the main portion is just as narrow as the clamping portion. Furthermore, it is advantageous if the busbar has a contact edge which forms the nip with the clamping edge of the clamping spring. Due to the formation of a defined contact edge on the busbar, the clamping force of the clamping spring is concentrated on this contact edge and thus optimizes the surface pressure resulting from the spring force of the clamping spring.
In einer besonders vorteilhaften Ausführungsform hat die Stromschiene ein Rahmenelement mit zwei voneinander beabstandeten Seitenstegen und einem die Seitenstege miteinander verbindenden Quersteg und eine durch die Seitenstege und den Quersteg begrenzte Leiterdurchführungsöffnung. Das Rahmenelement erstreckt sich dabei von der Stromschiene in Richtung Anlageschenkel der Klemmfeder weg, so dass der Anlageschenkel an dem Quersteg gelagert werden kann. Hierzu ist der Anlageschenkel in den Quersteg eingehängt. In a particularly advantageous embodiment, the bus bar has a frame element with two spaced-apart side webs and a crosspiece connecting the side webs together and a conductor lead-through opening delimited by the side webs and the cross web. The frame member extends away from the busbar in the direction of the plant leg of the clamping spring, so that the plant leg can be stored on the cross bar. For this purpose, the plant leg is mounted in the crosspiece.
Das Rahmenelement kann einstückig mit der Stromschiene geformt oder ein von der Stromschiene separates Teil sein. Denkbar ist auch, dass das Rahmenelement der Stromschiene einstückig mit der Klemmfeder als Ver- längerung des Anlageabschnitts geformt und in die Stromschiene eingehängt ist. The frame member may be formed integrally with the bus bar or be a separate part from the bus bar. It is also conceivable that the frame member of the busbar integral with the clamping spring as Ver extension of the contact section is formed and mounted in the busbar.
Mit Hilfe des Rahmenelementes wird ein selbsttragendes Federkraftklemmelement geschaffen, bei dem die Klemmfeder über das Rahmenelement an der Stromschiene festgelegt ist. Dieses selbsttragende Federkraftklemmelement kann dann derart vormontiert in ein Isolierstoffgehäuse einer Verbindungsklemme eingebaut und die Verbindungsklemme anschließend zur Fertigstellung derselben geschlossen werden. With the help of the frame member, a self-supporting spring force clamping element is provided in which the clamping spring is fixed on the busbar via the frame member. This self-supporting spring force clamping element can then be installed in such an assembled manner in an insulating housing of a connecting terminal and the connecting terminal then closed to complete the same.
Eine vorteilhafte Ausführungsform einer Verbindungsklemme mit einem Isolierstoffgehäuse und mindestens einem oben beschriebenen Federkraftklemmelement ist bevorzugt so ausgeführt, dass das Isolierstoffgehäuse mindestens eine sich in eine Leitereinführungsrichtung erstreckende Leitereinführungsöffnung hat, die in einem Leiteraufnahmeraum zwischen Hauptabschnitt und Stromschiene mündet, wobei der umgebogene erste Abschnitt des Klemmabschnitts im Winkel von etwa 70 bis 120 Grad zur Leitereinführungsrichtung quer zur Leiterdurchführungsrichtung steht. An advantageous embodiment of a connection terminal with an insulating material housing and at least one spring force clamping element described above is preferably designed so that the insulating housing has at least one conductor insertion opening extending in a conductor insertion direction, which opens into a conductor receiving space between the main portion and busbar, wherein the bent first portion of the clamping portion in Angle of about 70 to 120 degrees to the conductor insertion direction is transverse to the conductor feedthrough direction.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels mit den beigefügten Zeichnungen näher erläutert. Es zeigen: The invention will be explained in more detail with reference to an embodiment with the accompanying drawings. Show it:
Figur 1 - Seitenansicht eines Federkraftklemmelementes mit Klemmfeder, Stromschiene und Rahmenelement; Figure 1 - side view of a spring-loaded clamping element with clamping spring, busbar and frame member;
Figur 2 - Seiten-Schnittansicht des Federkraftklemmelementes aus  Figure 2 - side sectional view of the spring force clamping element
Figur 1 ;  FIG. 1;
Figur 3 - Perspektivische Ansicht des Federkraftklemmelementes aus  Figure 3 - Perspective view of the spring force clamping element
Figur 1 und 2 mit drei nebeneinander angeordneten Klemmfedern;  Figure 1 and 2 with three juxtaposed clamping springs;
Figur 4 - Seiten-Schnittansicht einer Verbindungsklemme mit darin eingebautem Federkraftklemmelement mit geöffnetem Betätigungshebel;  Figure 4 - side sectional view of a connection terminal with built-in spring force clamping element with the operating lever open;
Figur 5 - Seiten-Schnittansicht der Verbindungsklemme aus Figur 4 mit geschlossenem Betätigungshebel.  Figure 5 - side sectional view of the connection terminal of Figure 4 with the operating lever closed.
Figur 1 lässt eine Seitenansicht eines Federkraftklemmelementes 1 mit einer Stromschiene 2 und einer Klemmfeder 3 erkennen. Die Klemmfeder 3 ist U-förmig gebogen und hat einen Anlageschenkel 4 und einen sich daran anschließenden Federbogen 5, der in einen Klemmschenkel 6 übergeht. Der Klemmschenkel 6 hat an seinem freien Endbereich einen in Richtung der Stromschiene ausgerichteten Klemmabschnitt 7. Dieser Klemmabschnitt 7 schließt sich an einen Hauptabschnitt 8 des Klemmschenkels 6 an, wobei sich der Hauptabschnitt 8 vom Federbogen 5 ausgehend erstreckt. Dieser Hauptabschnitt 8 ist annähernd parallel zur Leitereinführungsrichtung LR (Leitereinsteckrichtung) und der Erstreckungs- richtung des benachbarten Anlageschenkels 4. FIG. 1 shows a side view of a spring force clamping element 1 with a busbar 2 and a clamping spring 3. The clamping spring 3 is bent in a U-shape and has a bearing leg 4 and an adjoining spring bow 5, which merges into a clamping leg 6. The clamping leg 6 has at its free end portion in the direction of the busbar aligned clamping portion 7. This clamping portion 7 connects to a main portion 8 of the clamping leg 6, wherein the main portion 8 extends from the spring bow 5 starting. This main section 8 is approximately parallel to the conductor insertion direction LR (conductor insertion direction) and the extension direction of the adjacent abutment leg 4.
Deutlich wird, dass der sich an den Hauptabschnitt 8 anschließende Klemmabschnitt 7 einen von dem Hauptabschnitt 8 in Richtung Stromschiene 2 umgebogenen ersten Abschnitt 9 und einen sich daran anschließenden zweiten Abschnitt 10 aufweist. Der zweite Abschnitt 10 hat an seinem freien Ende eine Klemmkante 1 1 . It becomes clear that the clamping section 7 adjoining the main section 8 has a first section 9 bent over from the main section 8 in the direction of the busbar 2 and an adjoining second section 10. The second section 10 has at its free end a clamping edge 1 1.
Erkennbar ist, dass der erste Abschnitt 9 im Wesentlichen in einem stumpfen Winkel a zur Stromschiene 2 steht, der wesentlich größer als der Winkel ß des zweiten Abschnitts 10 zur Stromschiene 2 ist. It can be seen that the first portion 9 is substantially at an obtuse angle a to the busbar 2, which is substantially greater than the angle ß of the second portion 10 to the busbar 2.
Der zweite Abschnitt 10 steht dabei im spitzen Winkel zur Stromschiene 2, so dass der Winkel ß < 90 Grad ist. In dem dargestellten Ausführungsbeispiel beträgt der Winkel ß etwa 50 Grad. The second section 10 is at an acute angle to the busbar 2, so that the angle ß <90 degrees. In the illustrated embodiment, the angle ß is about 50 degrees.
Der erste Abschnitt 9 hingegen steht in einem stumpfen Winkel a ( a > 90 Grad) zur Stromschiene und beträgt in dem dargestellten Ausführungsbeispiel etwa 105 Grad. Dies führt dazu, dass der erste Abschnitt 9 quer zur Leitereinführungsrichtung LR und damit quer in der Leitereinführungsöffnung eines Isolierstoffgehäuses steht. Ein eingefügter elektrischer Leiter trifft damit stumpf auf den ersten Abschnitt 9 auf, so dass ein selbsttätiges Öffnen der Klemmfeder durch Abheben des Klemmabschnitts 7 von der Stromschiene 2 insbesondere bei einem mehrdrähtigen elektrischen Leiter verhindert oder ein solches selbsttätiges Öffnen zumindest erschwert wird. The first portion 9, however, is at an obtuse angle a (a> 90 degrees) to the busbar and is in the illustrated embodiment about 105 degrees. This results in that the first section 9 is transverse to the conductor insertion direction LR and thus transversely in the conductor insertion opening of an insulating material. An inserted electrical conductor thus stumps on the first portion 9, so that an automatic opening of the clamping spring prevented by lifting the clamping portion 7 of the busbar 2, in particular in a multi-wire electrical conductor or such automatic opening is at least difficult.
Der erste Abschnitt 9 ist vorzugsweise länger als der zweite Abschnitt 10. The first section 9 is preferably longer than the second section 10.
Deutlich wird, dass die Stromschiene 2 in Bezug zur Leitereinführungsrichtung LR leicht geneigt ist. Unter einem stumpfen Winkel des ersten Abschnitts 9 zur Stromschiene 2 wird daher auch ein Winkel von etwa 70 bis 150 Grad des ersten Abschnitts 9 zur Leitereinführungsrichtung LR verstanden. It is clear that the busbar 2 is slightly inclined with respect to the conductor insertion direction LR. An obtuse angle of the first section 9 to the busbar 2 is therefore also understood to mean an angle of approximately 70 to 150 degrees of the first section 9 to the conductor insertion direction LR.
Erkennbar ist weiterhin, dass sich an den Hauptabschnitt der Stromschiene 2, auf den der Klemmabschnitt 7 der Klemmfeder 3 im unbelegten dargestellten Zustand aufliegt, ein in Richtung Anlageschenkel 4 umgeboge- ner Abschnitt anschließt. Dieser Abschnitt bildet ein Rahmenelement 12 durch zwei voneinander beabstandete Seitenstege 13 und einen diese Seitenstege 13 am freien Ende verbindenden Quersteg 14. Zwischen den Seitenstegen 13 und dem Quersteg 14 sowie dem Hauptabschnitt der Stromschiene 2 wird eine Leiterdurchführungsöffnung 16 gebildet, um einen elektrischen Leiter mit seinem freien Ende von der Klemmstelle ausgehend in Leitereinführungsrichtung LR weiter durch das Rahmenelement 12 zu führen. It can also be seen that, in the direction of the plant leg 4, the main section of the busbar 2, on which the clamping section 7 of the clamping spring 3 rests in the unoccupied state, adjoins. a section connects. This section forms a frame member 12 by two spaced apart side webs 13 and a crosspiece 14 connecting these side webs 13 at the free end. Between the side webs 13 and the crosspiece 14 and the main portion of the busbar 2, a conductor lead-through opening 16 is formed to form an electrical conductor with its starting from the terminal point in the conductor insertion direction LR continue to lead through the frame member 12.
Deutlich wird, dass der Anlageschenkel 4 mit einem gebogenen freien Ende 15 in das Rahmenelement 12 derart eingehängt ist, dass das umgebogene freie Ende 15 des Anlageschenkels 4 die obere Querkante 14 des Rahmenelementes 12 untergreift. Durch die Kraft der Klemmfeder wird der Anlageschenkel 4 somit an dem Rahmenelement 12 gehalten, während der Klemmabschnitt 7 der Klemmfeder 3 eine Kraft gegen die gegenüberliegende Stromschiene 2 ausübt. Das Federkraftklemmelement 1 ist damit selbsttragend ausgeführt. It is clear that the plant leg 4 is mounted with a curved free end 15 in the frame member 12 such that the bent free end 15 of the support leg 4, the upper transverse edge 14 of the frame member 12 engages under. By the force of the clamping spring, the abutment leg 4 is thus held on the frame member 12, while the clamping portion 7 of the clamping spring 3 exerts a force against the opposing busbar 2. The spring force clamping element 1 is thus carried out self-supporting.
Figur 2 lässt eine Seiten-Schnittansicht des Federkraftklemmelementes 1 aus Figur 1 erkennen. Dabei wird deutlicher, dass eine Leiterdurchführungsöffnung 16 des Rahmenelementes 12 durch Randstege und den oberen Quersteg 14 sowie den unteren Hauptabschnitt der Stromschiene 2 begrenzt ist. Erkennbar ist auch, dass das freie umgebogene Ende 15 des Anlageschenkels 4 unter den oberen Quersteg 14 eingehängt ist. FIG. 2 shows a side sectional view of the spring force clamping element 1 from FIG. It is clearer that a conductor lead-through opening 16 of the frame member 12 is limited by edge webs and the upper transverse web 14 and the lower main portion of the bus bar 2. It can also be seen that the free bent end 15 of the support leg 4 is suspended under the upper transverse web 14.
Figur 3 lässt eine perspektivische Ansicht des Federkraftklemmelementes 1 aus Figuren 1 und 2 erkennen. Dabei wird deutlich, dass sich die Stromschiene 2 quer zu der Anreihrichtung einer Mehrzahl von Klemmfedern 3 erstrecken kann, so dass sich die Klemmfedern 3 eine gemeinsame Stromschiene 2 teilen. Damit können die an die einzelnen Federkraftklemmanschlüsse 1 angeklemmten elektrischen Leiter elektrisch leitend über die gemeinsame Stromschiene 2 miteinander verbunden werden. Deutlich wird, dass der erste Abschnitt 9 des Klemmabschnitts 7 des Klemmschenkels 6 der Klemmfedern 3 quer zur Leitereinführungsrichtung LR und annähernd parallel zur Erstreckungsrichtung der Rahmenelemente 12 steht. Deutlich wird aber auch, dass sich daran anschließend ein im Vergleich zum Hauptabschnitt 8 des Klemmschenkels 6 wieder zurückgebogener zweiter Abschnitt 10 an diesen ersten Abschnitt 9 anschließt. FIG. 3 shows a perspective view of the spring force clamping element 1 from FIGS. 1 and 2. It becomes clear that the busbar 2 can extend transversely to the direction of arrangement of a plurality of clamping springs 3, so that the clamping springs 3 share a common busbar 2. Thus, the clamped to the individual Federkraftklemmanschlüsse 1 electrical conductors can be electrically connected to each other via the common busbar 2. It is clear that the first portion 9 of the clamping portion 7 of the clamping leg 6 of the clamping springs 3 is transverse to the conductor insertion direction LR and approximately parallel to the extension direction of the frame members 12. It is also clear, however, that subsequently a second section 10, bent back again in comparison to the main section 8 of the clamping leg 6, adjoins this first section 9.
Weiterhin ist erkennbar, dass die Klemmfedern 3 jeweils im Abstand zueinander angeordnet und in jeweils ein zugehöriges Rahmenelement 12 eingehängt sind. Die Rahmenelemente 12 sind dabei voneinander beabstandet, so dass zwischen benachbarten Seitenstegen 13 der benachbarten Rahmenelemente 12 ein Zwischenraum vorhanden ist. Dieser kann zur Aufnahme von Abschnitten eines nicht dargestellten Betätigungshebels und/oder einer Gehäusezwischenwand genutzt werden. Furthermore, it can be seen that the clamping springs 3 are each arranged at a distance from each other and are mounted in each case an associated frame member 12. The frame members 12 are spaced apart, so that between adjacent side bars 13 of the adjacent frame members 12, a gap is present. This can be used for receiving portions of an actuating lever, not shown, and / or a housing intermediate wall.
Figur 4 lässt eine Seitenansicht einer Ausführungsform einer Verbindungsklemme 17 mit einem Isolierstoffgehäuse 18 erkennen, in das das oben beschriebene Federkraftklemmelement 1 eingebaut ist. Das Isolierstoffgehäuse 18 ist dabei zweiteilig ausgeführt und hat ein Gehäuseteil 19 aus Isolierstoffmaterial, in dem frontseitig eine Leitereinführungsöffnung 20 eingebracht ist. Die Leitereinführungsöffnung 20 erstreckt sich in eine Leitereinführungsrichtung LR. In das Isolierstoffgehäuse 18 ist weiterhin ein Betätigungshebel 21 eingebaut. Dieser Betätigungshebel 21 ist mit einem teilkreisförmigen Lagerabschnitt 22 mit Hilfe einer hieran angepassten teilkreisförmigen Lagerkontur 23 des Isolierstoffgehäuses 18 gelagert. Der Lagerabschnitt 22 befindet sich dabei in Breitenrichtung mindestens teilweise seitlich versetzt neben dem Federkraftklemmelement 1 und in Höhenrichtung in einem Raum zwischen der Ebene der Stromschiene 2 und der Ebene des Anlageschenkels 4 der Klemmfeder 3. Der Betätigungshebel 21 ist als U-förmiger Betätigungshebel ausgeführt und hat zwei voneinander beabstandete Seitenwandabschnitte 24, die ausgehend von dem Lagerbereich 22 zum freien Ende hin verjüngt zulaufen. Im Bereich des freien Endes sind die Seitenwandabschnitte 24 über eine quer verlaufende Griffplatte 25 miteinander verbunden. FIG. 4 shows a side view of an embodiment of a connection terminal 17 with an insulating housing 18 into which the spring-force clamping element 1 described above is installed. The insulating housing 18 is designed in two parts and has a housing part 19 made of insulating material, in the front side, a conductor insertion opening 20 is introduced. The conductor insertion opening 20 extends in a conductor insertion direction LR. In the insulating housing 18, an actuating lever 21 is further installed. This actuating lever 21 is mounted with a part-circular bearing portion 22 by means of a partially circular bearing contour 23 of the insulating housing 18 adapted thereto. The bearing portion 22 is located in the width direction at least partially laterally offset next to the spring force clamping element 1 and in the height direction in a space between the plane of the busbar 2 and the plane of the contact leg 4 of the clamping spring 3. The operating lever 21 is designed as a U-shaped operating lever and has two spaced sidewall portions 24 extending from the Storage area 22 tapers towards the free end. In the region of the free end, the side wall portions 24 are connected to each other via a transverse grip plate 25.
Der zwischen Seitenwandabschnitten 24 und Griffplatte 25 gebildete Freiraum kann dann zur Aufnahme der Außenwand des Isolierstoffgehäuses 18 und teilweise auch des darunterliegenden Federkraftklemmelementes 1 genutzt werden, um auf diese Weise eine kompakt bauende Verbindungsklemme 17 zu schaffen. Deutlich wird, dass der Lagerbereich 22 eine Betätigungskontur 26 hat, die in dem dargestellten geöffneten Zustand des Betätigungshebels 21 im Eingriff mit dem Klemmschenkel 6 steht. Hierzu liegt ein seitlicher Randbereich des Klemmschenkels 6 auf der Betätigungskontur 26 auf, so dass der zweite Abschnitt 10 des Klemmschenkels 6 von der Stromschiene 2 weg in Richtung Anlageschenkel 4 gegen die Klemmkraft der Klemmfeder 3 verlagert wird. Damit ist die Klemmstelle für einen anzuschließenden elektrischen Leiter geöffnet und ein elektrischer Leiter kann mit seinem freien, abisolierten Ende in Leitereinführungsrichtung LR durch die Leitereinführungsöffnung 20 hindurchgeführt werden. Das freie Ende eines elektrischen Leiters (nicht dargestellt) mündet dann in einen Leiteraufnahmeraum 27, der in Leitereinführungsrichtung LR gesehen hinter dem Rahmenelement 12 liegt. The space formed between side wall portions 24 and handle plate 25 can then be used to receive the outer wall of the insulating housing 18 and partially also of the underlying spring clamping element 1, to provide in this way a compact connecting terminal 17. It is clear that the bearing portion 22 has an actuating contour 26 which is in the illustrated open state of the actuating lever 21 in engagement with the clamping leg 6. For this purpose, a lateral edge region of the clamping leg 6 rests on the actuating contour 26, so that the second portion 10 of the clamping leg 6 is displaced away from the busbar 2 in the direction of the plant leg 4 against the clamping force of the clamping spring 3. Thus, the nip is opened for an electrical conductor to be connected and an electrical conductor can be passed with its free, stripped end in the conductor insertion direction LR through the conductor insertion opening 20. The free end of an electrical conductor (not shown) then opens into a conductor receiving space 27, which, viewed in the conductor insertion direction LR, lies behind the frame element 12.
Erkennbar ist weiterhin, dass das Isolierstoffgehäuse 18 nach Einbau des Betätigungshebels 21 und des Federkraftklemmelementes 1 mit Hilfe eines Deckels 28 geschlossen wird, der rückseitig, d. h. gegenüberliegend zur Leitereinführungsöffnung 20 mit dem Gehäuseteil 19 verrastet wird. It can also be seen that the insulating housing 18 is closed after installation of the operating lever 21 and the spring force clamping element 1 by means of a cover 28, the rear side, d. H. opposite to the conductor insertion opening 20 is latched to the housing part 19.
Figur 5 lässt eine Seitenansicht der Verbindungsklemme 17 aus Figur 4 bei geschlossenem Betätigungshebel 21 erkennen. Deutlich wird, dass nunmehr die Betätigungskontur 26 nicht mehr auf den Klemmschenkel 6 der Klemmfeder 3 wirkt, so dass die Klemmkante 1 1 des Klemmschenkels 6 auf der Stromschiene 2 aufsitzt. Für den Fall eines angeklemmten elekt- rischen Leiters würde sich dieser dann zwischen der Klemmkante 1 1 und einer Kontaktkante 29 der Stromschiene 2 befinden, so dass die Klemmkante 1 1 und die Kontaktkante 29 eine Klemmstelle bilden. Ein elektrischer Leiter würde dann mit Hilfe der Kraft der Klemmfeder 3 an der Klemmstelle festgeklemmt und durch den im spitzen Winkel zur Stromschiene 2 und der Leitereinführungsrichtung LR und dem angeklemmten elektrischen Leiter stehenden ersten Abschnitt 10 auch vor Herausziehen mechanisch gesichert werden. JG/me-jl FIG. 5 shows a side view of the connection clamp 17 from FIG. 4 with the actuating lever 21 closed. It is clear that now the actuating contour 26 no longer acts on the clamping leg 6 of the clamping spring 3, so that the clamping edge 1 1 of the clamping leg 6 is seated on the busbar 2. In the event of a jammed This ladder would then be located between the clamping edge 1 1 and a contact edge 29 of the busbar 2, so that the clamping edge 1 1 and the contact edge 29 form a nip. An electrical conductor would then be clamped by means of the force of the clamping spring 3 at the terminal point and mechanically secured by the standing at an acute angle to the busbar 2 and the conductor insertion direction LR and the clamped electrical conductor first section 10 before pulling out. JG / me-jl

Claims

Patentansprüche: claims:
1 . Federkraftklemmelement (1 ) mit einer Stromschiene (2) und einer Klemmfeder (3), die einen Anlageschenkel (4), eine sich an den Anlageschenkel (4) anschließenden Federbogen (5) und einen sich an den Federbogen (5) anschließenden Klemmschenkel (6) mit einem sich von dem Federbogen (5) weg erstreckenden Hauptabschnitt (8) und einen in Richtung der Stromschiene (2) ausgerichteten Klemmabschnitt (7) hat, wobei der Klemmabschnitt (7) eine Klemmkante1 . A spring force clamping element (1) with a busbar (2) and a clamping spring (3), which has a bearing limb (4), a spring bow (5) adjoining the bearing limb (4) and a clamping limb (6) adjoining the spring bow (5) ) having a main portion (8) extending away from the spring bow (5) and a clamping portion (7) aligned in the direction of the busbar (2), the clamping portion (7) having a clamping edge
(1 1 ) an einem freien Ende des Klemmabschnitts (7) zur Bildung einer Klemmstelle zwischen der Klemmkante (1 1 ) und der Stromschiene (2) zum Anklemmen eines elektrischen Leiters aufweist, dadurch gekennzeichnet, dass der Klemmabschnitt (7) einen von dem Hauptabschnitt (8) in Richtung Stromschiene (2) umgebogenen ersten Abschnitt (9) und einen sich an den ersten Abschnitt (9) anschließenden, in Richtung der Erstreckung des Hauptabschnitts (8) wieder zurückgebogenen zweiten Abschnitt (10), der die Klemmkante (1 1 ) aufweist, hat, wobei in einer Ruhelage der Klemmfeder (3) ohne eingesteckten elektrischen Leiter, bei dem die Klemmkante (1 1 ) auf der Stromschiene (2) ruht, der erste Abschnitt (9) in der vom Federbogen (5) ausgehenden Erstreckungsrichtung (FR) der Klemmfeder (3) gesehen im stumpfen Winkel α zur Stromschiene (2) und der zweite Abschnitt (10) im spitzen Winkel ß zur Stromschiene (2) steht. (1 1) at a free end of the clamping portion (7) for forming a nip between the clamping edge (1 1) and the bus bar (2) for clamping an electrical conductor, characterized in that the clamping portion (7) one of the main portion (8) in the direction of the busbar (2) bent first portion (9) and a to the first portion (9), in the direction of the extension of the main portion (8) bent back again second portion (10) of the clamping edge (1 1 ), wherein in a rest position of the clamping spring (3) without inserted electrical conductor, in which the clamping edge (1 1) rests on the busbar (2), the first portion (9) in the extension of the spring bow (5) (FR) of the clamping spring (3) seen at an obtuse angle α to the busbar (2) and the second section (10) at an acute angle ß to the busbar (2).
2. Federkraftklemmelement (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass der erste Abschnitt (9) in der Ruhelage in einem Winkel α von 90 bis 120 Grad zur Stromschiene (2) steht. 2. spring force clamping element (1) according to claim 1, characterized in that the first portion (9) in the rest position at an angle α of 90 to 120 degrees to the busbar (2).
3. Federkraftklemmelement (1 ) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der zweite Abschnitt (10) in der Ruhelage in einem Winkel ß von 10 bis 60 Grad zur Stromschiene steht. Federkraftklemmelement (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Innenwinkel (δ) zwischen erstem Abschnitt (9) und zweitem Abschnitt (10) des Klemmabschnitts 70 bis 170 Grad beträgt. 3. spring force clamping element (1) according to claim 1 or 2, characterized in that the second portion (10) in the rest position at an angle ß of 10 to 60 degrees to the busbar. Spring-force clamping element (1) according to one of the preceding claims, characterized in that the internal angle (δ) between the first section (9) and the second section (10) of the clamping section is 70 to 170 degrees.
Federkraftklemmelement (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Klemmabschnitt (7) schmaler als der Hauptabschnitt (8) ist. Spring-loaded clamping element (1) according to one of the preceding claims, characterized in that the clamping section (7) is narrower than the main section (8).
Federkraftklemmelement (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Stromschiene (2) eine Kontaktkante (29) hat, die mit der Klemmkante (1 1 ) der Klemmfeder (3) die Klemmstelle bildet. Spring-loaded clamping element (1) according to one of the preceding claims, characterized in that the busbar (2) has a contact edge (29) which forms the clamping point with the clamping edge (1 1) of the clamping spring (3).
Federkraftklemmelement (1 ) nach Anspruch 6, dadurch gekennzeichnet, dass die Klemmkante (1 1 ) der Klemmfeder (3) in der Ruhelage in vom Federbogen (5) ausgehende Ersteckungsrichtung (FR) der Klemmfeder (3) gesehen vor der Kontaktkante (29) liegt. Spring-loaded clamping element (1) according to claim 6, characterized in that the clamping edge (1 1) of the clamping spring (3) in the rest position in the spring bow (5) outgoing Ersteckungsrichtung (FR) of the clamping spring (3) seen in front of the contact edge (29) ,
Federkraftklemmelement (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Stromschiene (2) ein Rahmenelement (12) mit zwei voneinander beabstandeten Seitenstegen (13) und einem die Seitenstege (13) miteinander verbindenden Quersteg (14) und einer durch die Seitenstege (13) und den Quersteg (14) begrenzten Leiterdurchführungsöffnung (16) hat, wobei sich das Rahmenelement (12) von der Stromschiene (2) in Richtung Anlageschenkel (4) der Klemmfeder (3) weg erstreckt und der Anlageschenkel (4) an dem Quersteg (14) gelagert ist. Spring-loaded clamping element (1) according to one of the preceding claims, characterized in that the busbar (2) comprises a frame element (12) with two spaced-apart side webs (13) and a transverse web (14) interconnecting the side webs (13) and one through the side webs (13) and the transverse web (14) limited conductor lead-through opening (16), wherein the frame element (12) from the busbar (2) in the direction of plant leg (4) of the clamping spring (3) extends away and the plant leg (4) on the Crosspiece (14) is mounted.
Federkraftklemmelement (1 ) nach Anspruch 8, dadurch gekennzeichnet, dass das Rahmenelement (12) einstückig mit der Strom- schiene (2) geformt oder ein von der Stromschiene (2) separates Teil ist. Spring-loaded clamping element (1) according to claim 8, characterized in that the frame element (12) is formed integrally with the current rail (2) is formed or a separate from the busbar (2) part.
10. Verbindungsklemme (17) mit einem Isolierstoffgehäuse (18) und 10. connection terminal (17) with an insulating material (18) and
mindestens einem Federkraftklemmelement (1 ) nach einem der vorhergehenden Ansprüche in dem Isolierstoffgehäuse (18).  at least one spring-loaded clamping element (1) according to one of the preceding claims in the insulating housing (18).
1 1 . Verbindungsklemme (17) nach Anspruch 10, dadurch gekennzeichnet, dass das Isolierstoffgehäuse (18) mindestens eine sich in eine Leitereinführungsrichtung (LR) erstreckende Leitereinführungsöffnung (20) hat, die in einem Leiteraufnahmeraum zwischen Hauptabschnitt (8) und Stromschiene (2) mündet, wobei der umgebogene erste Abschnitt (9) des Klemmabschnitts (7) im Winkel von 70 bis 120 Grad zur Leitereinführungsrichtung (LR) quer zur Leitereinführungsrichtung (LR) steht. 1 1. Connecting terminal (17) according to claim 10, characterized in that the insulating housing (18) has at least one in a conductor insertion direction (LR) extending conductor insertion opening (20) which opens in a conductor receiving space between the main section (8) and busbar (2) the bent first portion (9) of the clamping portion (7) is at an angle of 70 to 120 degrees to the conductor insertion direction (LR) transverse to the conductor insertion direction (LR).
EP14703879.8A 2013-02-13 2014-02-12 Spring-loaded clamping element and connecting terminal Active EP2956990B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013101408.9A DE102013101408B4 (en) 2013-02-13 2013-02-13 Spring-loaded clamping element and connecting terminal
PCT/EP2014/052716 WO2014124959A1 (en) 2013-02-13 2014-02-12 Spring-loaded clamping element and connecting terminal

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EP2956990A1 true EP2956990A1 (en) 2015-12-23
EP2956990B1 EP2956990B1 (en) 2018-07-11

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US (1) US9525217B2 (en)
EP (1) EP2956990B1 (en)
JP (1) JP2016507145A (en)
KR (1) KR102145878B1 (en)
CN (1) CN104995797B (en)
DE (1) DE102013101408B4 (en)
RU (1) RU2609597C1 (en)
WO (1) WO2014124959A1 (en)

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KR102145878B1 (en) 2020-08-20
DE102013101408B4 (en) 2021-01-14
US9525217B2 (en) 2016-12-20
DE102013101408A1 (en) 2014-08-28
RU2609597C1 (en) 2017-02-02
EP2956990B1 (en) 2018-07-11
CN104995797A (en) 2015-10-21
CN104995797B (en) 2017-09-12
KR20150116852A (en) 2015-10-16
US20150380837A1 (en) 2015-12-31
JP2016507145A (en) 2016-03-07
WO2014124959A1 (en) 2014-08-21

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