EP3869621A1 - Connecting terminal - Google Patents

Connecting terminal Download PDF

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Publication number
EP3869621A1
EP3869621A1 EP21150888.2A EP21150888A EP3869621A1 EP 3869621 A1 EP3869621 A1 EP 3869621A1 EP 21150888 A EP21150888 A EP 21150888A EP 3869621 A1 EP3869621 A1 EP 3869621A1
Authority
EP
European Patent Office
Prior art keywords
conductor insertion
conductor
contact
clamping
insulating material
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
EP21150888.2A
Other languages
German (de)
French (fr)
Other versions
EP3869621B1 (en
Inventor
Philipp Henrici
Olaf Baumeister
Markus Nasse
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.)
BJB GmbH and Co KG
Original Assignee
BJB GmbH and Co KG
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 BJB GmbH and Co KG filed Critical BJB GmbH and Co KG
Publication of EP3869621A1 publication Critical patent/EP3869621A1/en
Application granted granted Critical
Publication of EP3869621B1 publication Critical patent/EP3869621B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—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
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/515—Terminal blocks providing connections to wires or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/57—Fixed connections for rigid printed circuits or like structures characterised by the terminals surface mounting terminals
    • 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
    • H01R4/4819—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 the spring shape allowing insertion of the conductor end when the spring is unbiased
    • H01R4/4823—Multiblade spring
    • 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
    • H01R4/484—Spring housing details
    • H01R4/4842—Spring housing details the spring housing being provided with a single opening for insertion of a spring-activating 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
    • 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
    • H01R4/4846—Busbar details
    • H01R4/4848—Busbar integrally formed with the spring

Definitions

  • the invention relates to a connection terminal with a contact frame which forms a clamping point for fixing and making electrical contact with a connection conductor, the clamping point being formed by at least one abutment and a clamping spring pretensioned against the abutment, with a conductor insertion channel which feeds the connection conductor to the terminal point, and with an insulating material housing which accommodates the contact frame and forms a conductor insertion opening upstream of the conductor insertion channel in the conductor insertion direction.
  • connection terminal is for example in the EP 3 159 974 A1 disclosed.
  • the connection terminal there is intended for arrangement on a printed circuit board.
  • the contact frame forms a contact base, which has contact feet for a soldered connection with contact fields of the circuit board in its front and rear end as seen in the conductor insertion direction.
  • the contact frame also has contact side walls from which spring elements arise in the direction of insertion of the conductor.
  • An inclined surface of the metallic contact base and an inclined surface arranged opposite the contact base and formed by the insulating material housing of the connection terminal have a guiding function for the conductor when it is fed through the conductor insertion opening of the insulating material housing to the terminal point.
  • Connection terminals according to the invention are now manufactured in very small dimensions. They often measure no more than 3 to 4 mm in width with about the same height. The length of 8 mm is rarely exceeded.
  • the object of the invention is therefore to create a conductor guide which is easier to arrange and which correctly feeds the stripped end of a connection conductor to the terminal point of the contact frame.
  • connection terminal with the features of claim 1, in particular with its characterizing features, according to which the conductor insertion channel is formed by the insulating material housing.
  • the conductor insertion channel is shaped like a tube made of insulating material, which extends from a conductor insertion opening in the direction of the clamping point.
  • the invention deliberately dispenses with a conductor routing influenced by the contact base of the contact frame.
  • the invention assigns the conductor routing exclusively to the insulating housing, which receives the contact frame. An exact assignment of the unequal guide inclined surfaces known from the prior art can thus be avoided.
  • the conductor insertion channel formed by the insulating material housing is closed on all sides in the longitudinal direction of the contact and is only accessible via the conductor insertion opening and at its end releases the connected connection conductor in the direction of the terminal point via a corresponding outlet opening.
  • a preliminary contact is established between metallic parts of the contact frame and the via a relatively long insertion path of the conductor in relation to the connecting terminal Connection conductor avoided.
  • connection terminal In addition to improved conductor routing, the operational reliability of the connection terminal is also considerably improved.
  • the conductor insertion channel is designed to be tapered in a funnel-like manner starting from the conductor insertion opening in the conductor insertion direction.
  • the assembly of the contact frame and insulating material housing can be designed advantageously if the contact frame forms two contact side walls which are arranged on the contact base and accommodate the conductor insertion channel formed by the insulating material housing between them.
  • the contact frame is therefore open at least in the receiving area for the conductor insertion channel formed by the insulating material housing on the side opposite the contact base, that is to say towards the top.
  • the insulating material housing can therefore simply be placed on the pre-assembled contact frame without the need for the conductor insertion channel to be threaded into areas of the contact frame that are approximately closed in the shape of a ring.
  • the conductor insertion channel forms a guide tongue near the contact base and / or a guide tongue remote from the contact base, at its end facing away from the conductor insertion opening, which guide tongue extends in the conductor insertion direction.
  • a clamping spring extending in the conductor insertion direction arises from each contact side wall, the free ends of the clamping springs being directed towards one another and forming a clamping point and that the guide tongue of the conductor insertion channel is arranged between the clamping springs.
  • the guide tongues advantageously ensure that the connection contact can still be guided in the area of the clamping springs between the clamping springs converging or mutually aligned, without impairing their function.
  • the insulating material housing forms stop webs for the clamping spring, which limit a deflection path of the clamping spring during an opening movement.
  • This embodiment is particularly useful when the insulating housing has a recess in a top wall through which an expanding tool can be inserted between the free ends of the clamping springs and that the stop webs are arranged in side walls of the insulating housing in order to limit the opening expansion movement of the clamping springs.
  • the stop webs ensure that a deflection movement of the clamping springs that is required with respect to certain components of the connection terminal, in particular the contact frame, is prevented. For example, it may be necessary to deflect the To limit clamping springs in order to prevent them from being opened beyond the lateral limit of the contact base.
  • connection terminal according to the invention is provided overall with the reference number 10.
  • connection terminals 10 are placed next to one another on a circuit board 11.
  • the insulating material housing 14 has a collar 16 lying at the front in the conductor insertion direction x, which surrounds a conductor insertion opening 17 and also covers the front contact foot 12 of the contact frame 13.
  • the insulating material housing 14 has two side walls 18 receiving the contact frame 13 between them, a rear wall 19 which is arranged on the end of the insulating material housing 14 opposite the collar 16, and a top wall 20.
  • An opening 21 for a tool is provided in the top wall 20, which will be discussed below.
  • Fig. 1 also shows an example of a connection conductor 22, which is inserted into one of the two in Fig. 1 terminals shown is inserted.
  • Fig. 2 shows the representation according to Fig. 1 , but without the insulating housing 14 of the connection terminals 10.
  • Fig. 2 shows the representation according to Fig. 1 , but without the insulating housing 14 of the connection terminals 10.
  • the contact frames 13 are shown there.
  • the contact frames are once again in the Figures 3 and 4 shown.
  • Each contact frame 13 has a contact base 23 which, at its ends located at the front and rear in the conductor insertion direction x, each forms a contact foot 12 which is used for the electrically conductive connection to contact fields 15 of the circuit board 11.
  • the contact feet 12 are arranged in a common plane.
  • the who The bridge section 24 of the contact base 23, which connects the contact feet 12, is raised in relation to the plane of the contact feet 12, that is, pointing away from the circuit board 11, and is thus arranged at a distance from the circuit board 11.
  • the bridge section 24 of the contact frame 13 initially carries two contact side walls 25, which form a receiving space 26 between them, which is open at the top, that is, pointing away from the contact base 23.
  • a clamping spring 27 emerges from each contact side wall, the free ends of which are directed towards one another.
  • the ends of the clamping spring 27 can be pretensioned against one another, merely bear against one another or also be spaced apart from one another with a small separating gap.
  • each clamping spring 27 serves as an abutment for its respective counterpart.
  • connection conductor 22 is pushed into the connection terminal 10 for electrical contacting, the stripped end of the conductor being inserted into the clamping point 29 and fixed there by the clamping springs 27 in an electrically contacting and mechanically retaining manner.
  • the insulating material housing 14 forms in its interior a conductor insertion channel 30 adjoining the conductor insertion opening 17 and the collar 16 surrounding it.
  • This conductor insertion channel is roughly tubular, that is, it is surrounded on all sides by insulating material along its longitudinal axis, and has a conductor insertion opening 31 at the end remote from the conductor insertion opening 17 directed towards the clamping point 29 formed by the clamping springs 27.
  • the conductor insertion channel 30 lies approximately in the area between the side walls 25 of the contact frame 13.
  • the conductor outlet opening 31 is thus located approximately in the root area of the clamping springs 27 arising from the side walls 25 in the conductor insertion direction x.
  • the clamping springs 27 are directed towards one another and therefore form an approximately wedge-shaped space between them (see Figures 2 to 4 ), channel-like guidance that is enclosed on all sides cannot be implemented in this area between the clamping springs 27.
  • the insulating material housing 14 forms a guide tongue 32 on the channel bottom side and on the top wall side following the conductor outlet opening 31. Both guide tongues 32 have a contour that is conically tapered in the direction of insertion of the conductor. The horizontal guidance in the area of the guide tongues 32 is taken over by the clamping springs 27.
  • the Figures 5 to 7 show, in addition to the optimized routing of the connecting conductor 22, a further essential advantage of terminal according to the invention.
  • parts of the contact frame 13, generally at least the contact base 23, are exposed behind the conductor insertion opening 17.
  • a connection conductor 22 is pushed in, its stripped end hits metallic parts of the contact frame 13 well before it reaches the terminal point, and a preliminary contact is thus realized.
  • This can lead to undesired incorrect contacting when the connection conductor 22 is installed under voltage or when there is residual charge in electronic components sitting on the circuit board.
  • the Figures 5 and 6th moreover show that the lead tongues 32 also prevent such a pre-contact. After all, they show Figures 5 and 6th also that the expansion extensions 28 of the clamping springs 27 are arranged in the area of the opening 21 of the top wall 20 of the insulating material housing 14.
  • the opening 21 of the insulating material housing 14 is used to make the expansion extensions 28 or the clamping point 27 accessible for an expanding tool. This spreading tool can open the clamping point either for resistance-free mounting of the connection conductor 22 or for dismantling the connection conductor.
  • the side walls 18 of the insulating material housing 14 each have at least one stop web 33 on their inner surfaces, which is arranged in the area of the clamping springs 27 of the contact frame 13.
  • the stop web 33 serves to control the deflection or opening movement of each clamping spring 27 in the direction of the respective side wall 18 limit. In this way it can be ensured that when the clamping point is opened, the clamping springs 27 cannot, for example, be opened further than the contact base is wide. This prevents the connection conductor from getting with its stripped end into a gap between the contact base 23 and the clamping spring 27 and thus preventing the clamping point 29 from closing.
  • connection conductor 22 in a connection terminal 10 which avoids pre-contact
  • insulating conductor insertion channel 30 which is formed by the insulating housing 14 itself.
  • the invention also shows how both the guidance and the avoidance of pre-contact can be further improved via guide tongues 31 arranged near the contact base and remote from the contact base.
  • the invention advantageously shows a limitation of the deflection path of the clamping springs 27 in order to ensure functional reliability of the clamping point 29 of the connection terminal 10.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

Beschrieben und dargestellt wird eine Anschlussklemme mit einem Kontaktrahmen, der eine Klemmstelle zur Festlegung und elektrischen Kontaktierung eines Anschlussleiters ausbildet, wobei die Klemmstelle von wenigstens einem Widerlager und einer gegen das Widerlager vorgespannten Klemmfeder gebildet ist, mit einem Leitereinführkanal, welcher den Anschlussleiter der Klemmstelle zuführt, und mit einem Isolierstoffgehäuse, welches den Kontaktrahmen aufnimmt und eine dem Leitereinführkanal in Leitereinschubrichtung vorgeordnete Leitereinführöffnung ausbildet, wobei der Leitereinführkanal vom Isolierstoffgehäuse gebildet ist.Described and shown is a connection terminal with a contact frame which forms a clamping point for fixing and making electrical contact with a connection conductor, the clamping point being formed by at least one abutment and a clamping spring pretensioned against the abutment, with a conductor insertion channel which feeds the connection conductor to the terminal point, and with an insulating material housing which accommodates the contact frame and forms a conductor insertion opening arranged upstream of the conductor insertion channel in the conductor insertion direction, the conductor insertion channel being formed by the insulating material housing.

Description

Die Erfindung betrifft eine Anschlussklemme mit einem Kontaktrahmen, der eine Klemmstelle zur Festlegung und elektrischen Kontaktierung eines Anschlussleiters ausbildet, wobei die Klemmstelle von wenigstens einem Widerlager und einer gegen das Widerlager vorgespannten Klemmfeder gebildet ist, mit einem Leitereinführkanal, welcher den Anschlussleiter der Klemmstelle zuführt, und mit einem Isolierstoffgehäuse, welches den Kontaktrahmen aufnimmt und eine dem Leitereinführkanal in Leitereinschubrichtung vorgeordnete Leitereinführöffnung ausbildet.The invention relates to a connection terminal with a contact frame which forms a clamping point for fixing and making electrical contact with a connection conductor, the clamping point being formed by at least one abutment and a clamping spring pretensioned against the abutment, with a conductor insertion channel which feeds the connection conductor to the terminal point, and with an insulating material housing which accommodates the contact frame and forms a conductor insertion opening upstream of the conductor insertion channel in the conductor insertion direction.

Eine gattungsgemäße Anschlussklemme ist beispielsweise in der EP 3 159 974 A1 offenbart. Die dortige Anschlussklemme ist zur Anordnung auf einer Leiterplatte vorgesehen. Hierzu bildet der Kontaktrahmen einen Kontaktboden aus, der in seinem vorderen und in Leitereinsteckrichtung gesehen hinteren Ende Kontaktfüße für eine Lötverbindung mit Kontaktfeldern der Leiterplatte aufweist. Der Kontaktrahmen verfügt darüber hinaus über Kontaktseitenwände, denen Federelemente in Leitereinschubrichtung entspringen. Eine Schrägfläche des metallischen Kontaktbodens sowie eine gegenüber dem Kontaktboden angeordnete, vom Isolierstoffgehäuse der Anschlussklemme ausgebildete Schrägfläche haben eine Führungsfunktion für den Leiter, wenn dieser durch die Leitereinstecköffnung des Isolierstoffgehäuses hindurch der Klemmstelle zugeführt wird.A generic connection terminal is for example in the EP 3 159 974 A1 disclosed. The connection terminal there is intended for arrangement on a printed circuit board. For this purpose, the contact frame forms a contact base, which has contact feet for a soldered connection with contact fields of the circuit board in its front and rear end as seen in the conductor insertion direction. The contact frame also has contact side walls from which spring elements arise in the direction of insertion of the conductor. An inclined surface of the metallic contact base and an inclined surface arranged opposite the contact base and formed by the insulating material housing of the connection terminal have a guiding function for the conductor when it is fed through the conductor insertion opening of the insulating material housing to the terminal point.

Erfindungsgemäße Anschlussklemmen werden mittlerweile in sehr kleinen Dimensionen gefertigt. Sie messen in der Breite häufig nicht mehr als 3 bis 4 mm bei etwa gleicher Höhe. Die Länge von 8 mm wird selten überschritten.Connection terminals according to the invention are now manufactured in very small dimensions. They often measure no more than 3 to 4 mm in width with about the same height. The length of 8 mm is rarely exceeded.

Insofern ist eine hohe Präzision in der Herstellung und Montage erforderlich, um die vom Isolierstoffgehäuse einerseits und vom metallischen Kontaktrahmen andererseits ausgebildeten Führungsschrägflächen korrekt zueinander zu positionieren.In this respect, a high level of precision is required in production and assembly in order to correctly position the inclined guide surfaces formed by the insulating material housing on the one hand and the metallic contact frame on the other hand.

Aufgabe der Erfindung ist es deshalb, eine einfacher anzuordnende Leiterführung zu schaffen, welche das abisolierte Ende eines Anschlussleiters korrekt der Klemmstelle des Kontaktrahmens zuführt.The object of the invention is therefore to create a conductor guide which is easier to arrange and which correctly feeds the stripped end of a connection conductor to the terminal point of the contact frame.

Gelöst wird die Erfindung von einer Anschlussklemme mit den Merkmalen des Anspruchs 1, insbesondere mit dessen kennzeichnenden Merkmalen, wonach der Leitereinführkanal vom Isolierstoffgehäuse gebildet ist.The invention is achieved by a connection terminal with the features of claim 1, in particular with its characterizing features, according to which the conductor insertion channel is formed by the insulating material housing.

Dabei ist insbesondere vorgesehen, dass der Leitereinführkanal nach Art einer aus Isolierstoff gebildeten Röhre ausgeformt ist, welche sich von einer Leitereinführöffnung in Richtung der Klemmstelle erstreckt.It is provided in particular that the conductor insertion channel is shaped like a tube made of insulating material, which extends from a conductor insertion opening in the direction of the clamping point.

Die Erfindung verzichtet bewusst auf eine vom Kontaktboden des Kontaktrahmens beeinflusste Leiterführung. Die Erfindung ordnet die Leiterführung ausschließlich dem Isolierstoffgehäuse zu, welches den Kontaktrahmen aufnimmt. Eine exakte Zuordnung der aus dem Stand der Technik bekannten, ungleichen Führungsschrägflächen lässt sich somit vermeiden.The invention deliberately dispenses with a conductor routing influenced by the contact base of the contact frame. The invention assigns the conductor routing exclusively to the insulating housing, which receives the contact frame. An exact assignment of the unequal guide inclined surfaces known from the prior art can thus be avoided.

Darüber hinaus hat es sich als überaus vorteilhaft erwiesen, dass der vom Isolierstoffgehäuse ausgebildete Leitereinführkanal in Kontaktlängsrichtung allseitig geschlossen ist und lediglich über die Leitereinführöffnung zugänglich ist, sowie an seinem Ende über eine entsprechende Auslassöffnung den geführten Anschlussleiter in Richtung Klemmstelle entlässt. Hierdurch wird über einen in Bezug auf die Anschlussklemme vergleichsweise langen Einschubweg des Leiters ein Vorkontakt zwischen metallischen Teilen des Kontaktrahmens und dem Anschlussleiter vermieden. Dies hat insbesondere Vorteile, wenn die Anschlussklemme bei unter Spannung stehenden Teilen oder bei vorhandener Restladung von auf der Platine montierten Elektronikbauteilen mit einem Anschlussleiter versehen wird.In addition, it has proven to be extremely advantageous that the conductor insertion channel formed by the insulating material housing is closed on all sides in the longitudinal direction of the contact and is only accessible via the conductor insertion opening and at its end releases the connected connection conductor in the direction of the terminal point via a corresponding outlet opening. As a result, a preliminary contact is established between metallic parts of the contact frame and the via a relatively long insertion path of the conductor in relation to the connecting terminal Connection conductor avoided. This has particular advantages if the connection terminal is provided with a connection conductor when parts are under voltage or when there is residual charge of electronic components mounted on the circuit board.

Neben einer verbesserten Leiterführung wird somit zusätzlich die Betriebssicherheit der Anschlussklemme erheblich verbessert.In addition to improved conductor routing, the operational reliability of the connection terminal is also considerably improved.

Um eine zentrierte Führung des Anschlussleiters zu gewährleisten ist vorgesehen, dass der Leitereinführkanal ausgehend von der Leitereinführöffnung in Leitereinsteckrichtung trichterartig verjüngt ausgebildet ist.In order to ensure a centered guidance of the connection conductor, it is provided that the conductor insertion channel is designed to be tapered in a funnel-like manner starting from the conductor insertion opening in the conductor insertion direction.

Die Montage von Kontaktrahmen und Isolierstoffgehäuse lässt sich vorteilhaft gestalten, wenn der Kontaktrahmen zwei Kontaktseitenwände ausbildet, die am Kontaktboden angeordnet sind und den vom Isolierstoffgehäuse ausgebildeten Leitereinführkanal zwischen sich aufnehmen.The assembly of the contact frame and insulating material housing can be designed advantageously if the contact frame forms two contact side walls which are arranged on the contact base and accommodate the conductor insertion channel formed by the insulating material housing between them.

Im Gegenteil zu Klemmen aus dem Stand der Technik ist der Kontaktrahmen also wenigstens im Aufnahmebereich für den vom Isolierstoffgehäuse gebildeten Leitereinführkanal auf der dem Kontaktboden gegenüberliegenden Seite, also nach oben hin, offen. Deshalb lässt sich das Isolierstoffgehäuse auf den vorkonfektionierten Kontaktrahmen einfach aufsetzen, ohne dass es eines Einfädelns des Leitereinführkanals in in etwa ringförmig geschlossene Bereiche des Kontaktrahmens bedarf.In contrast to terminals from the prior art, the contact frame is therefore open at least in the receiving area for the conductor insertion channel formed by the insulating material housing on the side opposite the contact base, that is to say towards the top. The insulating material housing can therefore simply be placed on the pre-assembled contact frame without the need for the conductor insertion channel to be threaded into areas of the contact frame that are approximately closed in the shape of a ring.

Vorgesehen ist ferner, dass der Leitereinführkanal an seinem der Leitereinführöffnung abgewandten Ende eine kontaktbodennahe und/oder eine kontaktbodenferne Leitzunge ausbildet, die sich in Leitereinführrichtung erstreckt.It is also provided that the conductor insertion channel forms a guide tongue near the contact base and / or a guide tongue remote from the contact base, at its end facing away from the conductor insertion opening, which guide tongue extends in the conductor insertion direction.

Mit der sich an den Einführkanal anschließenden Leitzunge lässt sich eine zentrierte Führung relativ zu dem Kontaktboden bzw. der Oberseite der Anschlussklemme weiter verbessern.With the guide tongue adjoining the insertion channel, centered guidance relative to the contact base or the top of the connection terminal can be further improved.

Dabei ist insbesondere vorgesehen, dass jeder Kontaktseitenwand eine sich in Leitereinsteckrichtung erstreckende Klemmfeder entspringt, wobei die freien Enden der Klemmfedern gegeneinander gerichtet sind und eine Klemmstelle bilden und dass die Leitzunge des Leitereinführkanals zwischen den Klemmfedern angeordnet ist.It is provided in particular that a clamping spring extending in the conductor insertion direction arises from each contact side wall, the free ends of the clamping springs being directed towards one another and forming a clamping point and that the guide tongue of the conductor insertion channel is arranged between the clamping springs.

Bei dieser Ausführungsform wird durch die Leitzungen auf vorteilhafte Weise erreicht, dass auch zwischen den aufeinander zulaufenden bzw. gegeneinander ausgerichteten Klemmfedern noch eine Führung des Anschlusskontaktes im Bereich der Klemmfedern möglich ist, ohne deren Funktion zu beeinträchtigen.In this embodiment, the guide tongues advantageously ensure that the connection contact can still be guided in the area of the clamping springs between the clamping springs converging or mutually aligned, without impairing their function.

Vorgesehen ist ferner, dass das Isolierstoffgehäuse Anschlagstege für die Klemmfeder ausbildet, welche einen Auslenkweg der Klemmfeder bei einer Öffnungsbewegung begrenzt.It is also provided that the insulating material housing forms stop webs for the clamping spring, which limit a deflection path of the clamping spring during an opening movement.

Diese Ausführungsform ist insbesondere dann sinnvoll, wenn das Isolierstoffgehäuse in einer Deckwand eine Ausnehmung aufweist, durch welche ein Spreizwerkzeug zwischen die freien Enden der Klemmfedern einbringbar ist und dass die Anschlagstege in Seitenwänden des Isolierstoffgehäuses angeordnet sind, um die öffnende Spreizbewegung der Klemmfedern zu begrenzen.This embodiment is particularly useful when the insulating housing has a recess in a top wall through which an expanding tool can be inserted between the free ends of the clamping springs and that the stop webs are arranged in side walls of the insulating housing in order to limit the opening expansion movement of the clamping springs.

Die Anschlagstege sorgen dafür, dass eine in Bezug auf bestimmte Bauteile der Anschlussklemme, insbesondere den Kontaktrahmen, erforderliche Auslenkbewegung der Klemmfedern verhindert wird. Beispielsweise kann es erforderlich sein, das seitliche Auslenken der Klemmfedern zu begrenzen, um zu verhindern, dass sie über die seitliche Begrenzung des Kontaktbodens hinaus geöffnet werden.The stop webs ensure that a deflection movement of the clamping springs that is required with respect to certain components of the connection terminal, in particular the contact frame, is prevented. For example, it may be necessary to deflect the To limit clamping springs in order to prevent them from being opened beyond the lateral limit of the contact base.

Weitere Vorteile der Erfindung sowie ein besseres Verständnis folgt aus der Beschreibung eines Ausführungsbeispiels. Es zeigen:

Fig. 1:
die Anordnung zweiter erfindungsgemäßer Anschlussklemmen auf einer Leiterplatte,
Fig. 2:
die Darstellung gemäß Fig. 1 ohne Isolierstoffgehäuse,
Fig. 3:
die Darstellung des Kontaktrahmens einer erfindungsgemäßen Anschlussklemme mit eingesetztem Anschlussleiter,
Fig. 4:
die Darstellung gemäß Fig. 3 ohne Anschlussleiter,
Fig. 5:
eine Schnittdarstellung durch eine erfindungsgemäße Anschlussklemme entlang einer vertikalen Längsebene in perspektivischer Darstellung,
Fig. 6:
die Schnittdarstellung gemäß Fig. 5 in Seitenansicht,
Fig. 7:
die Schnittansicht gemäß Fig. 6 ohne Anschlussleiter und Kontaktrahmen.
Further advantages of the invention and a better understanding follow from the description of an exemplary embodiment. Show it:
Fig. 1:
the arrangement of second connection terminals according to the invention on a circuit board,
Fig. 2:
the representation according to Fig. 1 without insulating housing,
Fig. 3:
the representation of the contact frame of a connection terminal according to the invention with inserted connection conductor,
Fig. 4:
the representation according to Fig. 3 without connecting wire,
Fig. 5:
a sectional view through a connection terminal according to the invention along a vertical longitudinal plane in a perspective view,
Fig. 6:
the sectional view according to Fig. 5 in side view,
Fig. 7:
the sectional view according to Fig. 6 without connection conductor and contact frame.

In den Figuren ist eine erfindungsgemäße Anschlussklemme insgesamt mit der Bezugsziffer 10 versehen.In the figures, a connection terminal according to the invention is provided overall with the reference number 10.

In Fig. 1 sind zwei erfindungsgemäße Anschlussklemmen 10 nebeneinander auf einer Leiterplatte 11 aufgesetzt. Die Kontaktfüße 12 eines Kontaktrahmens 13, welche in Fig. 1 im Wesentlichen in einem Isolierstoffgehäuse 14 aufgenommen ist, liegen auf Kontaktfeldern 15 der Leiterplatte 11 auf und sind mit diesen elektrisch leitend, beispielsweise durch eine Lötverbindung, verbunden.In Fig. 1 two connection terminals 10 according to the invention are placed next to one another on a circuit board 11. The contact feet 12 of a contact frame 13, which in Fig. 1 essentially in one Insulating housing 14 is received, rest on contact fields 15 of the printed circuit board 11 and are connected to them in an electrically conductive manner, for example by a soldered connection.

Das Isolierstoffgehäuse 14 verfügt über einen in Leitereinsteckrichtung x vorn liegenden Kragen 16, welcher eine Leitereinführöffnung 17 umgibt und zudem den vorderen Kontaktfuß 12 des Kontaktrahmens 13 überfängt.The insulating material housing 14 has a collar 16 lying at the front in the conductor insertion direction x, which surrounds a conductor insertion opening 17 and also covers the front contact foot 12 of the contact frame 13.

Das Isolierstoffgehäuse 14 verfügt über zwei den Kontaktrahmen 13 zwischen sich aufnehmenden Seitenwänden 18, eine Rückwand 19, die an dem dem Kragen 16 gegenüberliegenden Ende des Isolierstoffgehäuses 14 angeordnet ist, sowie über eine Deckwand 20.The insulating material housing 14 has two side walls 18 receiving the contact frame 13 between them, a rear wall 19 which is arranged on the end of the insulating material housing 14 opposite the collar 16, and a top wall 20.

In der Deckwand 20 ist eine Durchbrechung 21 für ein Werkzeug vorgesehen, worauf im Weiteren noch eingegangen wird.An opening 21 for a tool is provided in the top wall 20, which will be discussed below.

Fig. 1 zeigt darüber hinaus exemplarisch einen Anschlussleiter 22, der in eine der beiden in Fig. 1 dargestellten Anschlussklemmen eingeschoben ist. Fig. 1 also shows an example of a connection conductor 22, which is inserted into one of the two in Fig. 1 terminals shown is inserted.

Fig. 2 zeigt die Darstellung gemäß Fig. 1, jedoch ohne die Isolierstoffgehäuse 14 der Anschlussklemmen 10. Infolgedessen sind dort neben Leiterplatte 11 und Anschlussleiter 22 lediglich die Kontaktrahmen 13 dargestellt. Die Kontaktrahmen sind im Übrigen noch einmal in den Figuren 3 und 4 gezeigt. Fig. 2 shows the representation according to Fig. 1 , but without the insulating housing 14 of the connection terminals 10. As a result, in addition to the printed circuit board 11 and connection conductor 22, only the contact frames 13 are shown there. Incidentally, the contact frames are once again in the Figures 3 and 4 shown.

Jeder Kontaktrahmen 13 verfügt über einen Kontaktboden 23, welcher an seinen in Leitereinsteckrichtung x vorn und hinten liegenden Enden jeweils einen Kontaktfuß 12 ausbildet, welcher der elektrisch leitenden Verbindung mit Kontaktfeldern 15 der Leiterplatte 11 dienen. Die Kontaktfüße 12 sind in einer gemeinsamen Ebene angeordnet. Der die Kontaktfüße 12 verbindende Brückenabschnitt 24 des Kontaktbodens 23 ist gegenüber der Ebene der Kontaktfüße 12 nach oben, also von der Leiterplatte 11 wegweisend, ausgestellt und somit zur Leiterplatte 11 beabstandet angeordnet. Der Brückenabschnitt 24 des Kontaktrahmens 13 trägt zunächst zwei Kontaktseitenwände 25, die zwischen sich einen Aufnahmeraum 26 ausbilden, der nach oben hin, also vom Kontaktboden 23 weg weisend, offen ist. In Leitereinsteckrichtung x entspringen einer jeden Kontaktseitenwand eine Klemmfeder 27, deren freie Ende aufeinander zu gerichtet sind. Die Enden der Klemmfeder 27 können gegeneinander vorgespannt sein, lediglich aneinander anliegen oder auch mit einem geringen Trennspalt voneinander beabstandet sein.Each contact frame 13 has a contact base 23 which, at its ends located at the front and rear in the conductor insertion direction x, each forms a contact foot 12 which is used for the electrically conductive connection to contact fields 15 of the circuit board 11. The contact feet 12 are arranged in a common plane. The who The bridge section 24 of the contact base 23, which connects the contact feet 12, is raised in relation to the plane of the contact feet 12, that is, pointing away from the circuit board 11, and is thus arranged at a distance from the circuit board 11. The bridge section 24 of the contact frame 13 initially carries two contact side walls 25, which form a receiving space 26 between them, which is open at the top, that is, pointing away from the contact base 23. In the conductor insertion direction x, a clamping spring 27 emerges from each contact side wall, the free ends of which are directed towards one another. The ends of the clamping spring 27 can be pretensioned against one another, merely bear against one another or also be spaced apart from one another with a small separating gap.

An ihrer vom Kontaktboden 23 wegweisenden Kante tragen die Klemmfedern 27 jeweils einen Spreizfortsatz 28. Die Spreizfortsätze 28 dienen dazu, ein Spreizwerkzeug zwischen sich aufzunehmen, um die Klemmfedern unter Aufbau einer Federspannung voneinander weg zu spreizen und so eine Öffnungsbewegung zu induzieren, welche die von den Klemmfedern 27 gebildete Klemmstelle 29 öffnet. Bei dieser konkreten Ausgestaltung der Klemmstelle 29 dient jede Klemmfeder 27 ihrem jeweiligen Gegenstück als Widerlager.At their edge pointing away from the contact base 23, the clamping springs 27 each carry a spreading extension 28. The spreading extensions 28 are used to hold a spreading tool between them in order to spread the clamping springs away from one another while building up a spring tension and thus induce an opening movement which causes the Terminal point 29 formed by clamping springs 27 opens. In this specific embodiment of the clamping point 29, each clamping spring 27 serves as an abutment for its respective counterpart.

Wie aus der vergleichenden Betrachtung der Figuren 3 und 4, wie aus Fig. 2 ersichtlich ist, wird das abisolierte Ende des Anschlussleiters 22 für eine elektrische Kontaktierung in die Anschlussklemme 10 eingeschoben, wobei das abisolierte Leiterende in die Klemmstelle 29 eingeführt wird und dort von den Klemmfedern 27 elektrisch kontaktierend und mechanisch haltend fixiert wird.As from the comparative consideration of the Figures 3 and 4 how out Fig. 2 As can be seen, the stripped end of the connection conductor 22 is pushed into the connection terminal 10 for electrical contacting, the stripped end of the conductor being inserted into the clamping point 29 and fixed there by the clamping springs 27 in an electrically contacting and mechanically retaining manner.

Erfindungswesentlich ist insbesondere das in den Figuren 5 bis 7 in verschiedenen Schnittdarstellungen gezeigte Isolierstoffgehäuse 14 in seiner konkreten Ausbildung. Die Figuren 5 und 6 zeigen neben dem Isolierstoffgehäuse 14 auch den Kontaktrahmen 13. Fig. 5 zeigt darüber hinaus den Anschlussleiter 22.Essential to the invention is in particular that in the Figures 5 to 7 Isolierstoffgehäuses 14 shown in different sectional views in its specific design. the Figures 5 and 6th show next to the Insulated housing 14 also the contact frame 13. Fig. 5 also shows the connection conductor 22.

Wie die Figuren 5 bis 7 zeigen, bildet das Isolierstoffgehäuse 14 in seinem Inneren einen sich an die Leitereinführöffnung 17 und den sie umgebenden Kragen 16 anschließenden Leitereinführkanal 30 aus. Dieser Leitereinführkanal ist in etwa röhrenförmig, das heißt, entlang seiner Kanallängsachse allseitig von Isolierstoffmaterial umgeben, und verfügt an dem der Leitereinführöffnung 17 abgelegenen Ende über eine Leiterausführöffnung 31. Dabei läuft der Leitereinführkanal 30 in Leitereinsteckrichtung x in etwa trichterförmig zu und führt hierdurch das abisolierte Leiterende zielgerichtet auf die von den Klemmfedern 27 gebildete Klemmstelle 29 zu.As the Figures 5 to 7 show, the insulating material housing 14 forms in its interior a conductor insertion channel 30 adjoining the conductor insertion opening 17 and the collar 16 surrounding it. This conductor insertion channel is roughly tubular, that is, it is surrounded on all sides by insulating material along its longitudinal axis, and has a conductor insertion opening 31 at the end remote from the conductor insertion opening 17 directed towards the clamping point 29 formed by the clamping springs 27.

Der Leitereinführkanal 30 liegt in etwa im Bereich zwischen den Seitenwänden 25 des Kontaktrahmens 13. Die Leiterausführöffnung 31 befindet sich somit etwa im Wurzelbereich der den Seitenwänden 25 in Leitereinführrichtung x entspringenden Klemmfedern 27.The conductor insertion channel 30 lies approximately in the area between the side walls 25 of the contact frame 13. The conductor outlet opening 31 is thus located approximately in the root area of the clamping springs 27 arising from the side walls 25 in the conductor insertion direction x.

Da die Klemmfedern 27 aufeinander zu gerichtet sind und deshalb zwischen sich einen etwa keilförmigen Raum ausbilden (siehe Figuren 2 bis 4), lässt sich in diesem Bereich zwischen den Klemmfedern 27 keine allseitig umschlossene, kanalartige Führung realisieren. Um eine zumindest in Vertikalrichtung sichere und zentrierte Führung zu gewährleisten, bildet das Isolierstoffgehäuse 14 im Anschluss an die Leiterausführöffnung 31 eine kanalbodenseitige wie eine deckwandseitige Leitzunge 32 aus. Beide Leitzungen 32 haben eine in Leitereinsteckrichtung konisch verjüngte Kontur. Die Horizontalführung übernehmen im Bereich der Leitzungen 32 die Klemmfedern 27.Since the clamping springs 27 are directed towards one another and therefore form an approximately wedge-shaped space between them (see Figures 2 to 4 ), channel-like guidance that is enclosed on all sides cannot be implemented in this area between the clamping springs 27. In order to ensure a safe and centered guidance at least in the vertical direction, the insulating material housing 14 forms a guide tongue 32 on the channel bottom side and on the top wall side following the conductor outlet opening 31. Both guide tongues 32 have a contour that is conically tapered in the direction of insertion of the conductor. The horizontal guidance in the area of the guide tongues 32 is taken over by the clamping springs 27.

Die Figuren 5 bis 7 zeigen neben der optimierten Führung des Anschlussleiters 22 einen weiteren wesentlichen Vorteil der erfindungsgemäßen Anschlussklemme. Bei Anschlussklemmen ohne erfindungsgemäßen Leitereinführkanal 30 liegen Teile des Kontaktrahmens 13, in der Regel zumindest der Kontaktboden 23 hinter der Leitereinführöffnung 17 frei. Dies hat zur Folge, dass beim Einschieben eines Anschlussleiters 22 dessen abisoliertes Ende weit vor Erreichen der Klemmstelle auf metallische Teile des Kontaktrahmens 13 trifft und somit ein Vorkontakt realisiert wird. Dies kann bei einer Montage des Anschlussleiters 22 unter Spannung oder bei vorhandener Restladung von auf der Platine aufsitzenden Elektronikbauteilen zu unerwünschten Fehlkontaktierungen führen. Es ist jedoch beispielsweise auch möglich, dass eine solche Vorkontaktierung bei Montage des Anschlussleiters 22 unter Anliegen einer Prüfspannung eine sichere elektrische Kontaktierung suggeriert, die wegen eines fehlenden Einsitzens des abisolierten Anschlussleiterendes in der Klemmstelle nicht vorhanden ist.the Figures 5 to 7 show, in addition to the optimized routing of the connecting conductor 22, a further essential advantage of terminal according to the invention. In the case of connection terminals without a conductor insertion channel 30 according to the invention, parts of the contact frame 13, generally at least the contact base 23, are exposed behind the conductor insertion opening 17. As a result, when a connection conductor 22 is pushed in, its stripped end hits metallic parts of the contact frame 13 well before it reaches the terminal point, and a preliminary contact is thus realized. This can lead to undesired incorrect contacting when the connection conductor 22 is installed under voltage or when there is residual charge in electronic components sitting on the circuit board. However, it is also possible, for example, that such a pre-contact suggests a secure electrical contact when the connection conductor 22 is installed when a test voltage is applied, which is not present because the stripped connection conductor end is not seated in the terminal point.

Die Figuren 5 und 6 zeigen darüber hinaus, dass auch die Leitzungen 32 einer solchen Vorkontaktierung vorbeugen. Schließlich zeigen die Figuren 5 und 6 auch, dass die Spreizfortsätze 28 der Klemmfedern 27 im Bereich der durch Brechung 21 der Deckwand 20 des Isolierstoffgehäuses 14 angeordnet sind. Der Durchbruch 21 des Isolierstoffgehäuses 14 dient dazu, die Spreizfortsätze 28 bzw. die Klemmstelle 27 zugänglich für ein Spreizwerkzeug zu machen. Dieses Spreizwerkzeug kann die Klemmstelle entweder zur widerstandsfreien Montage des Anschlussleiters 22 oder zur Demontage des Anschlussleiters öffnen.the Figures 5 and 6th moreover show that the lead tongues 32 also prevent such a pre-contact. After all, they show Figures 5 and 6th also that the expansion extensions 28 of the clamping springs 27 are arranged in the area of the opening 21 of the top wall 20 of the insulating material housing 14. The opening 21 of the insulating material housing 14 is used to make the expansion extensions 28 or the clamping point 27 accessible for an expanding tool. This spreading tool can open the clamping point either for resistance-free mounting of the connection conductor 22 or for dismantling the connection conductor.

Anhand von Fig. 7 wird neben den bereits beschriebenen Strukturen des Isolierstoffgehäuses 14 noch eine weitere Baustruktur erläutert. So verfügen die Seitenwände 18 des Isolierstoffgehäuses 14 auf ihren Innenflächen über jeweils wenigstens einen Anschlagsteg 33, der im Bereich der Klemmfedern 27 des Kontaktrahmens 13 angeordnet ist. Der Anschlagsteg 33 dient dazu, die Auslenk- bzw. Öffnungsbewegung einer jeden Klemmfeder 27 in Richtung der jeweiligen Seitenwand 18 zu begrenzen. Auf diese Weise kann sichergestellt werden, dass beim Öffnen der Klemmstelle sich die Klemmfedern 27 beispielsweise nicht weiter öffnen lassen als der Kontaktboden breit ist. So wird vermieden, dass der Anschlussleiter mit seinem abisolierten Ende in einen Spalt zwischen Kontaktboden 23 und Klemmfeder 27 gelangt und somit ein Schließen der Klemmstelle 29 verhindert.Based on Fig. 7 In addition to the structures of the insulating housing 14 already described, a further building structure is explained. The side walls 18 of the insulating material housing 14 each have at least one stop web 33 on their inner surfaces, which is arranged in the area of the clamping springs 27 of the contact frame 13. The stop web 33 serves to control the deflection or opening movement of each clamping spring 27 in the direction of the respective side wall 18 limit. In this way it can be ensured that when the clamping point is opened, the clamping springs 27 cannot, for example, be opened further than the contact base is wide. This prevents the connection conductor from getting with its stripped end into a gap between the contact base 23 and the clamping spring 27 and thus preventing the clamping point 29 from closing.

Die Erfindung zeigt also auf vorteilhafte Weise, wie eine sichere und einen Vorkontakt vermeidende Montage eines Anschlussleiters 22 in einer Anschlussklemme 10 durch einen Isolierstoff-Leitereinführkanal 30 realisierbar ist, welcher vom Isolierstoffgehäuse 14 selbst ausgebildet ist.The invention thus shows in an advantageous manner how a secure installation of a connection conductor 22 in a connection terminal 10, which avoids pre-contact, can be implemented by means of an insulating conductor insertion channel 30 which is formed by the insulating housing 14 itself.

Die Erfindung zeigt darüber hinaus, wie sich sowohl die Führung als auch das Vermeiden eines Vorkontaktes über kontaktbodennah und kontaktbodenfern angeordnete Leitzungen 31 weiter verbessern lässt.The invention also shows how both the guidance and the avoidance of pre-contact can be further improved via guide tongues 31 arranged near the contact base and remote from the contact base.

Schließlich zeigt die Erfindung auf vorteilhafte Weise eine Begrenzung des Auslenkweges der Klemmfedern 27, um eine Funktionssicherheit der Klemmstelle 29 der Anschlussklemme 10 sicherzustellen.Finally, the invention advantageously shows a limitation of the deflection path of the clamping springs 27 in order to ensure functional reliability of the clamping point 29 of the connection terminal 10.

BezugszeichenlisteList of reference symbols

1010
AnschlussklemmeConnection terminal
1111
LeiterplatteCircuit board
1212th
KontaktfußContact foot
1313th
KontaktrahmenContact frame
1414th
IsolierstoffgehäuseInsulated housing
1515th
KontaktfeldContact field
1616
Kragencollar
1717th
LeitereinführöffnungConductor insertion opening
1818th
SeitenwandSide wall
1919th
RückwandBack wall
2020th
DeckwandTop wall
2121
DurchbrechungBreakthrough
2222nd
AnschlussleiterConnection conductor
2323
KontaktbodenContact bottom
2424
BrückenabschnittBridge section
2525th
KontaktseitenwandContact sidewall
2626th
AufnahmeraumRecording room
2727
KlemmfederClamp spring
2828
SpreizfortsatzSpreading process
2929
KlemmstelleTerminal point
3030th
LeitereinführkanalLadder entry channel
3131
LeiterausführöffnungLadder exit opening
3232
LeitzungeGuide tongue
3333
AnschlagstegStop bar
xx
LeitereinsteckrichtungConductor insertion direction

Claims (8)

Anschlussklemme (10) - mit einem Kontaktrahmen (13), der eine Klemmstelle (29) zur Festlegung und elektrischen Kontaktierung eines Anschlussleiters (22) ausbildet, wobei die Klemmstelle (29) von wenigstens einem Widerlager und einer gegen das Widerlager vorgespannten Klemmfeder (27) gebildet ist, - mit einem Leitereinführkanal (30), welcher den Anschlussleiter (22) der Klemmstelle (29) zuführt, - mit einem Isolierstoffgehäuse (14), welches den Kontaktrahmen (13) aufnimmt und eine dem Leitereinführkanal (30) in Leitereinschubrichtung vorgeordnete Leitereinführöffnung (17) ausbildet, dadurch gekennzeichnet, dass der Leitereinführkanal (30) vom Isolierstoffgehäuse (14) gebildet ist. Connection terminal (10) - With a contact frame (13) which forms a clamping point (29) for fixing and making electrical contact with a connection conductor (22), the clamping point (29) being formed by at least one abutment and a clamping spring (27) pretensioned against the abutment, - With a conductor insertion channel (30) which feeds the connecting conductor (22) to the terminal point (29), - With an insulating material housing (14) which accommodates the contact frame (13) and forms a conductor insertion opening (17) upstream of the conductor insertion channel (30) in the conductor insertion direction, characterized in that the conductor insertion channel (30) is formed by the insulating material housing (14). Anschlussklemme (10) nach Anspruch 1, dadurch gekennzeichnet, dass der Leitereinführkanal (30) nach Art einer aus Isolierstoff gebildeten Röhre ausgeformt ist, welche sich von einer Leitereinführöffnung in Richtung der Klemmstelle (29) erstreckt.Terminal (10) according to claim 1, characterized in that the conductor insertion channel (30) is shaped like a tube made of insulating material which extends from a conductor insertion opening in the direction of the clamping point (29). Anschlussklemme (10) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Leitereinführkanal (30) ausgehend von der Leitereinführöffnung (17) in Leitereinsteckrichtung trichterartig verjüngt ausgebildet ist.Connection terminal (10) according to Claim 1 or 2, characterized in that the conductor insertion channel (30) is designed to taper in a funnel-like manner starting from the conductor insertion opening (17) in the conductor insertion direction. Anschlussklemme (10) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Kontaktrahmen (13) zwei Kontaktseitenwände (25) ausbildet, die am Kontaktboden (23) angeordnet sind und den vom Isolierstoffgehäuse (14) ausgebildeten Leitereinführkanal (30) zwischen sich aufnehmen.Terminal (10) according to one of Claims 1 to 3, characterized in that the contact frame (13) forms two contact side walls (25) which are arranged on the contact base (23) and the conductor insertion channel (30) formed by the insulating material housing (14) between them take up. Anschlussklemme (10) nach Anspruch 4, dadurch gekennzeichnet, dass der Leitereinführkanal (30) an seinem der Leitereinführöffnung (17) abgewandten Ende eine kontaktbodennahe und/oder eine kontaktbodenferne Leitzunge (32) ausbildet, die sich in Leitereinführrichtung erstreckt.Terminal (10) according to claim 4, characterized in that the conductor insertion channel (30) at its end facing away from the conductor insertion opening (17) forms a guide tongue (32) close to the contact base and / or remote from the contact base, which extends in the direction of insertion of the conductor. Anschlussklemme (10) nach Anspruch 4 und 5, dadurch gekennzeichnet, dass jeder Kontaktseitenwand (18) eine sich in Leitereinsteckrichtung erstreckende Klemmfeder (27) entspringt, wobei die freien Enden der Klemmfedern (27) gegeneinander gerichtet sind und eine Klemmstelle (29) bilden und dass die Leitzunge (32) des Leitereinführkanals (30) zwischen den Klemmfedern (27) angeordnet ist.Terminal (10) according to Claims 4 and 5, characterized in that a clamping spring (27) extending in the conductor insertion direction arises from each contact side wall (18), the free ends of the clamping springs (27) facing one another and forming a clamping point (29) and that the guide tongue (32) of the conductor insertion channel (30) is arranged between the clamping springs (27). Anschlussklemme (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Isolierstoffgehäuse (14) Anschlagstege für die Klemmfeder (27) ausbildet, welche einen Auslenkweg der Klemmfeder (27) bei einer Öffnungsbewegung begrenzt.Terminal (10) according to one of the preceding claims, characterized in that the insulating material housing (14) forms stop webs for the clamping spring (27) which limit a deflection path of the clamping spring (27) during an opening movement. Anschlussklemme (10) nach Anspruch 4 und 7, dadurch gekennzeichnet, dass das Isolierstoffgehäuse (14) in einer Deckwand (20) eine Ausnehmung aufweist, durch welche ein Spreizwerkzeug zwischen die freien Enden der Klemmfedern (27) einbringbar ist und dass die Anschlagstege in Seitenwänden (18) des Isolierstoffgehäuses (14) angeordnet sind, um die öffnende Spreizbewegung der Klemmfedern (27) zu begrenzen.Terminal (10) according to claim 4 and 7, characterized in that the insulating material housing (14) has a recess in a cover wall (20) through which a spreading tool can be inserted between the free ends of the clamping springs (27) and that the stop webs in side walls (18) of the insulating material housing (14) are arranged in order to limit the opening spreading movement of the clamping springs (27).
EP21150888.2A 2020-02-19 2021-01-11 Connecting terminal Active EP3869621B1 (en)

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DE102020104417.8A DE102020104417B4 (en) 2020-02-19 2020-02-19 terminal block

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EP3869621A1 true EP3869621A1 (en) 2021-08-25
EP3869621B1 EP3869621B1 (en) 2022-06-01

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US (1) US11817664B2 (en)
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US11817664B2 (en) 2023-11-14
US20210257751A1 (en) 2021-08-19
DE102020104417A1 (en) 2021-08-19
DE102020104417B4 (en) 2022-08-11
PL3869621T3 (en) 2022-09-19
CN113285258B (en) 2023-08-01
EP3869621B1 (en) 2022-06-01
CN113285258A (en) 2021-08-20

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