EP2434582B1 - Connection terminal - Google Patents

Connection terminal Download PDF

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Publication number
EP2434582B1
EP2434582B1 EP11182481.9A EP11182481A EP2434582B1 EP 2434582 B1 EP2434582 B1 EP 2434582B1 EP 11182481 A EP11182481 A EP 11182481A EP 2434582 B1 EP2434582 B1 EP 2434582B1
Authority
EP
European Patent Office
Prior art keywords
contact
circuit board
spring elements
opening
connecting terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11182481.9A
Other languages
German (de)
French (fr)
Other versions
EP2434582A1 (en
Inventor
Joachim Borst
Eduard Betz
Hermann Stadler
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.)
MC Technology GmbH
Original Assignee
MC Technology GmbH
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Filing date
Publication date
Application filed by MC Technology GmbH filed Critical MC Technology GmbH
Publication of EP2434582A1 publication Critical patent/EP2434582A1/en
Application granted granted Critical
Publication of EP2434582B1 publication Critical patent/EP2434582B1/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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • 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
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • 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
    • H01R12/70—Coupling devices
    • H01R12/7005—Guiding, mounting, polarizing or locking means; Extractors
    • H01R12/7011—Locking or fixing a connector to a PCB
    • H01R12/7064—Press fitting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H01R4/363—Conductive members located under tip of screw with intermediate part between tip and conductive member

Definitions

  • the invention relates to a terminal-printed circuit board assembly according to the preamble of patent claim 1.
  • terminals with an insulating terminal housing and at least one arranged in the terminal housing clamping contact for connecting an electrical conductor known, wherein a contact element, which is in the terminal housing with one of the terminal contacts in electrically conductive connection through a first opening of the terminal housing on the outside of the Terminal housing is guided and comes to make an electrical contact between a circuit board and the terminal contact or the terminal contacts when placing the terminal on the circuit board with a contact surface of the circuit board in contact.
  • a contact element which is in the terminal housing with one of the terminal contacts in electrically conductive connection through a first opening of the terminal housing on the outside of the Terminal housing is guided and comes to make an electrical contact between a circuit board and the terminal contact or the terminal contacts when placing the terminal on the circuit board with a contact surface of the circuit board in contact.
  • a contact spring which presses on a arranged on the surface of the printed circuit board flat contact surface. This has the disadvantage that no accurate relative positioning between the terminal and the circuit board is guaranteed. In addition, the spring contacts are not protected against mechanical damage.
  • a terminal with an insulating terminal housing and at least one or at least two disposed in the terminal housing contacts for connecting an electrical conductor is known in which a contact element, which is in the terminal housing with one of the contacts in electrically conductive connection, through a first opening of the terminal housing on the outside of the terminal housing is guided and comes to make an electrical contact between the circuit board and the contact when placing the terminal on the circuit board with a contact surface of the circuit board in contact, wherein the contact element comprises two leaf spring-like spring elements, which are suitable, a contact surface , Which is arranged on the inside of a contact opening of the circuit board to contact and which at least partially away from each other and then running towards each other running sin d, wherein the distance of the free ends of the spring elements is smaller than the diameter of the contact opening and the spring elements are then formed extending away from each other, so that a break-in phase is formed, wherein the largest distance of the spring elements outside the terminal housing is arranged and wherein the largest distance of Spring elements is
  • Spring elements which are formed at least in sections as counter-shaped arc segment-shaped elements are made of US 3,717,841 A and the US 4,384,757 A known. Spring elements, which have a distance in the region of the first opening, which is greater than the diameter of the first opening, on the one hand from the above-appreciated prior art, but also from the US 7,399,187 B1 known.
  • the object of the invention is to provide a cost-effective plug-in terminal board assembly, which ensures a reliable contact with a circuit board and an exact relative positioning of the terminal in a contact opening of a circuit board and provides protection against mechanical damage.
  • the terminal board circuit board assembly comprises a printed circuit board and a terminal with an insulating terminal housing and at least one or at least two arranged in the terminal housing terminal contacts for connecting an electrical conductor, wherein a contact element which in the terminal housing with one of the terminal contacts or two terminal contacts in electrically conductive connection is passed through a first opening of the terminal housing on the outside of the terminal housing and for establishing an electrical contact between the circuit board and the terminal contact or the terminal contacts when placing the terminal on the circuit board with a contact surface of the circuit board comes into contact, wherein the contact surface is arranged on the inside of a contact opening of the printed circuit board and wherein the contact element comprises two leaf spring-like spring elements, which are at least partially away from each other and then running towards each other, wherein the distance between the free ends of the spring elements is smaller than that Diameter of the contact opening, when the terminal is not mounted on the circuit board, and the spring elements are then formed extending away from each other, so that an inlet chamfer is formed, wherein the largest distance of the spring elements
  • Such a terminal board assembly is characterized by the fact that it creates the possibility of a simple secure electrical contacting of the circuit board via the terminal by the geometric configuration of the leaf spring-like spring elements in combination with a disposed within a contact opening of a circuit board inner contact.
  • the sections the spring elements, via which the contact with the inner contact is made conditionally pressed by their geometric design, provided by spring action contact pressure against the inner contact thus ensuring a good electrical contact.
  • the terminal can be easily removed if necessary and simply plugged in, so it is a pluggable terminal.
  • the contact element does not spring in, but the two leaf spring-like spring elements each spring as a whole, which in particular a reliable contact between the contact element and the contact surface is guaranteed.
  • the contact surface is arranged on the inside of a contact opening of the circuit board, by attaching the terminal with the contact element in the contact opening already a relative positioning between the terminal and the circuit board can be made.
  • Characterized in that the distance between the free ends of the spring elements is smaller than the diameter of the contact opening and the spring elements are then formed extending away from each other, an inlet chamfer is formed, by which a simple insertion of the leaf spring-like spring elements is made possible in the contact opening.
  • the spring elements are at least partially formed as a counter-shaped arc segment-shaped elements, which are particularly inexpensive to manufacture.
  • the spring elements in the region of the first opening at a distance which is greater than the diameter of the first opening. Characterized the spring elements are biased by the first opening of the terminal housing, which causes a better contact force between the contact element and the contact surface.
  • the spring elements are curved in cross-section to allow a larger contact surface between the leaf spring-like spring elements and the contact surface on the inside of the contact opening.
  • terminal contacts are arranged in the terminal housing per contact element and each of the spring elements of the contact element is connected to exactly one terminal contact in electrically conductive connection. This makes it possible to connect to a contact surface in a simple manner two electrical conductors via the two terminal contacts.
  • the contact opening of the circuit board on its inside two electrically mutually insulated contact surfaces, so that in a small space in a contact opening electrically isolated from each other via the terminal two electrical conductors can be connected.
  • the first opening on the outside of the terminal housing has a sectionally circumferential Edge on which protects the protruding from the first opening free ends of the spring elements against mechanical damage.
  • a particularly effective protection against mechanical damage to the free ends of the leaf-spring-like spring elements is achieved if preferably on the outside of the terminal housing adjacent to the first opening a sleeve closed on one side is arranged, which has two openings in a side wall through which the free ends of the spring elements and in particular the area of greatest distance of the two spring elements are accessible, wherein the sleeve is insertable into the contact opening.
  • a positioning of the connection terminal relative to the printed circuit board is made possible by the sleeve, in particular if the sleeve can be inserted into the contact opening substantially accurately.
  • FIGS. 1 to 3 show a first embodiment of a terminal 10 with a terminal housing 12 made of an insulating material.
  • the terminal housing 12 has in particular a housing cover 19, which makes it possible that the interior of the terminal housing 12 is accessible in a simple manner.
  • three clamping contacts 20 are arranged, which are formed substantially identical to each other. Of course, more or less clamping contacts 20, in particular only one clamping contact 20, can be arranged in the terminal housing 12.
  • the terminal contacts 20 are designed as fferklemmtempo, wherein an electrical conductor can be inserted into the terminal contact 20 through a second opening 16, where it can be fixed with a clamping screw 25 which is accessible through a third opening 18 of the terminal housing 12.
  • a spring terminal contact or the like can be used.
  • a contact element 30 is arranged, which is in particular arranged integrally on the clamping contact 20 and which is formed by a first spring element 32 and a second spring element 34.
  • the two spring elements 32, 34 are designed as leaf spring-like spring elements 32, 34.
  • the two spring elements 32, 34 have a free end 32a, 34a, thereafter a first region 32b, 34b, subsequently a second region 32c, 34c and subsequently a third region 32d, 34d.
  • the two spring elements 32, 34 extend substantially parallel (cf. FIG. 3 ).
  • the third region 32 d, 34 d of both spring elements 32, 34 is connected to the contact element 20.
  • the two spring elements 32, 34 extend away from each other in the first region 32b, 34b and towards each other in the second region 32c, 34c.
  • the spring elements 32, 34 may be formed in the first region 32b, 34b and the second region 32c, 34c as counter-arc segments. Between the first region 32b, 34b and the second region 32c, 34c, the spring elements 32, 34 have a greatest distance a, which is arranged outside the terminal housing 12 on the outside of the first opening 14.
  • the first region 32b, 34b of the spring elements 32, 34 forms in particular an inlet chamfer, which simplifies the insertion of the contact element 30 into a contact opening of a printed circuit board.
  • the largest distance a of the spring elements 32, 34 is greater than the diameter of the contact opening, the distance d between the free ends 32a, 34a of the spring elements 32, 34 smaller than the diameter of the contact opening of the circuit board. This ensures a reliable contacting of the spring elements 32, 34 in the contact opening of the circuit board.
  • the break-off spark is formed in the area of the free end 32a, 34a of the spring elements 23, 34 and not in the area between the first area 32b, 34b and the second area 32c, 34c. which represents the contact region of the spring elements 32, 34 with the contact surface of the contact opening of the printed circuit board, so that damage to the spring elements 32, 34, which may be caused by the Abrasive sparks, in a region of the spring elements 32, 34 are caused, which is not for the preparation of electrically conductive contact between the terminal contact 20 and the circuit board is needed. Due to the configuration of the contact element 30 by two independent spring elements 32, 34 a larger spring travel of the contact element 30 in the contact opening and thus a better contact force is possible.
  • the spring elements 32, 34 are preferably additionally curved in cross section.
  • the edge 40 has a first section 41 and a second section 42, which are arranged on the edge of the first opening 14 and adjoin the spring elements 32, 34, respectively.
  • the sections 41, 42 of the edge 40 additionally ensure an exact relative positioning of the connection terminal 10 in the contact opening of the printed circuit board.
  • FIGS. 4 to 6c show a second embodiment of a terminal 10 'according to the invention, wherein like reference numerals the same or similar parts as in the first Designate embodiment of the terminal 10 and not all reference numerals are given in all figures for clarity.
  • the terminal 10 In the terminal 10 according to the first embodiment, exactly one terminal contact 20 is provided per contact element 30. In this case, any number of clamping contacts 20 can be arranged, each with a contact element 20 in the terminal housing 12.
  • the terminal 10 'according to the second embodiment differs from the first embodiment of the terminal 10 on the one hand, that per contact element 30 two terminal contacts 20a, 20b are present, the first spring element 32 via the third region 32d in electrically conductive connection with the one terminal contact 20a and in particular integrally formed on this, while the second spring element 34 is in electrical conduction connection with the clamping contact 20b over the third region 34d and in particular integrally formed thereon. This makes it possible to connect two electrical conductors to a contact opening of a printed circuit board via two terminal contacts 20a, 20b.
  • any number of contact elements 30 can be arranged in the terminal housing 12, each with two terminal contacts 20a, 20b. In principle, it is of course also possible to arrange in a terminal housing 12 both contact elements 30, which are connected to only one clamping contact 20, and contact elements 30, which are connected to two terminal contacts 20a, 20b in combination.
  • a circumferential contact surface may be formed in the contact opening, so that the two electrical conductors connected to the terminal contacts 20a, 20b are led to the same electrical potential.
  • Another difference of the second embodiment of the terminal 10 'over the first embodiment of the terminal 10 is the way in which the out of the terminal housing 12 led out spring elements 32, 34 are protected against mechanical damage.
  • the second embodiment of the terminal 10 ' is provided on one side by a lid 51 closed sleeve 50 which is placed on the first opening 14 on the outside of the terminal housing 12, which has two openings 54 in its side wall 52, in particular arranged diametrically opposite one another are, and through which the contact areas of the spring elements 32, 34 are accessible.
  • the sleeve 50 which is in particular substantially accurately fit into the contact opening of the circuit board, a reliable relative positioning of the terminal 10 'relative to the circuit board is possible.
  • FIGS. 6a to 6c showing a terminal board assembly 70 with a terminal according to the second embodiment of the invention in different representations and as an enlargement, it can be seen particularly well how the contact of a terminal according to the invention with a circuit board is made.
  • FIG. 6a shows an exemplary terminal board assembly 70 with a circuit board 60 with traces 61, which are interrupted by arranged in the circuit board 60 contact openings 62 respectively.
  • a terminal 10 ' according to the second embodiment of the invention, as shown in the FIGS. 4 and 5 is shown in not plugged state and has been described above, so that through the contact openings 62 through the lid 51 can be seen.
  • FIG. 6c shows detail enlargement of the area A of the sectional view according to FIG. 6b detects, the contact openings 62 of the circuit board 60 respectively on the inner contacts 63a and 63b, which are electrically connected to associated portions 61a and 61b of a conductor 61.
  • the contact surface formed by the inner contacts 63a and 63b is thus arranged within the contact opening 62, more precisely at its inner edge.
  • the spring elements 32,34 By inserting the terminal 10 ', which is facilitated by the fact that the first region 32b, 34b of the spring elements 32, 34 forms an inlet chamfer, the spring elements 32,34, the largest distance in the in the FIGS. 4 and 5 shown, not plugged or not on the circuit board 60 asssuffed state greater than the diameter of the contact opening 62 is compressed and under a mechanical tension. In other words, the distances a and d are reduced in the inserted state. This ensures a reliable contacting of the spring elements 32, 34 to the inner contacts 63a, 63b in the contact opening 62 of the printed circuit board 60.
  • the contact is thereby produced, in particular, on and in the immediate vicinity of the transition point between the first region 32b, 34b and the second region 32c, 34c, ie approximately at the point at which the spring element 32, in the non-inserted state of the connecting terminal 10 ', 34 have the greatest distance from each other.
  • the embodiment of the electrical contact with the inner contact 63a, 63b discussed by way of example using the example of the second embodiment is determined by the shape of the spring elements 32, 34 in the regions 32b, 32c, 34b, 34c and the distance of these regions from one another, and is thus different between the terminals 10 and 10 'independently.
  • Both in the terminal 10 according to the first embodiment of the invention and in the terminal 10 'according to the second embodiment of the invention are thus pluggable terminals 10,10', which can be plugged onto a circuit board 60 and withdrawn and in which in particular, the electrical contact does not have to be made by soldering to the printed circuit board 60 first.

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  • Coupling Device And Connection With Printed Circuit (AREA)

Description

Die Erfindung betrifft eine Anschlussklemmen-Leiterplatten-Anordnung gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a terminal-printed circuit board assembly according to the preamble of patent claim 1.

Es sind Anschlussklemmen mit einem isolierenden Anschlussklemmengehäuse und wenigstens einem in dem Anschlussklemmengehäuse angeordneten Klemmkontakt zum Anschließen eines elektrischen Leiters bekannt, wobei ein Kontaktelement, welches in dem Anschlussklemmengehäuse mit einem der Klemmkontakte in elektrische leitender Verbindung steht, durch eine erste Öffnung des Anschlussklemmengehäuses auf die Außenseite des Anschlussklemmengehäuses geführt ist und zur Herstellung eines elektrischen Kontakts zwischen einer Leiterplatte und dem Klemmkontakt oder den Klemmkontakten bei Aufsetzen der Anschlussklemme auf die Leiterplatte mit einer Kontaktfläche der Leiterplatte in Kontakt kommt. Eine derartige Anschlussklemme zeigt beispielsweise die DE 10 2007 043 197 A1 . Die dort beschriebene Anschlussklemme weist allerdings eine Kontaktfeder auf, die auf eine auf der Oberfläche der Leiterplatte angeordnete ebene Kontaktfläche drückt. Dies hat den Nachteil, dass keine genaue relative Positionierung zwischen der Anschlussklemme und der Leiterplatte gewährleistet ist. Zudem sind die Federkontakte nicht gegen mechanische Beschädigungen geschützt.There are terminals with an insulating terminal housing and at least one arranged in the terminal housing clamping contact for connecting an electrical conductor known, wherein a contact element, which is in the terminal housing with one of the terminal contacts in electrically conductive connection through a first opening of the terminal housing on the outside of the Terminal housing is guided and comes to make an electrical contact between a circuit board and the terminal contact or the terminal contacts when placing the terminal on the circuit board with a contact surface of the circuit board in contact. Such a terminal shows, for example, the DE 10 2007 043 197 A1 , However, the terminal described therein has a contact spring which presses on a arranged on the surface of the printed circuit board flat contact surface. This has the disadvantage that no accurate relative positioning between the terminal and the circuit board is guaranteed. In addition, the spring contacts are not protected against mechanical damage.

Der DE 33 20 418 A1 sind Anschlussklemmen zu entnehmen, welche Steckkontakte aufweisen, die in Durchkontaktierungen einer Leiterplatte eingreifen. Dadurch ist zwar eine relative Positionierung zwischen den Anschlussklemmen und der Leiterplatte möglich. Die Steckkontakte gewährleisten jedoch nicht immer eine zuverlässige Kontaktierung zwischen dem Steckkontakt und der Durchkontaktierung.Of the DE 33 20 418 A1 are terminals to see that have plug contacts that engage in through holes of a circuit board. As a result, a relative positioning between the terminals and the circuit board is possible. However, the plug contacts do not always guarantee a reliable contact between the plug contact and the feedthrough.

Aus der WO 2010/063459 A1 ist eine Anschlussklemme mit einem isolierenden Anschlussklemmengehäuse und wenigstens einem oder wenigstens zwei in dem Anschlussklemmengehäuse angeordneten Kontakten zum Anschließen eines elektrischen Leiters bekannt, bei der ein Kontaktelement, welches in dem Anschlussklemmengehäuse mit einem der Kontakte in elektrisch leitender Verbindung steht, durch eine erste Öffnung des Anschlussklemmengehäuses auf die die Außenseite des Anschlussklemmengehäuses geführt ist und zur Herstellung eines elektrischen Kontakts zwischen der Leiterplatte und dem Kontakt bei Aufsetzen der Anschlussklemme auf die Leiterplatte mit einer Kontaktfläche der Leiterplatte in Kontakt kommt, wobei das Kontaktelement zwei blattfederartige Federelemente aufweist, die geeignet sind, eine Kontaktfläche, die auf der Innenseite einer Kontaktöffnung der Leiterplatte angeordnet ist zu kontaktieren und welche zumindest abschnittsweise voneinander weg und anschließend aufeinander zu verlaufend ausgebildet sind, wobei der Abstand der freien Enden der Federelemente kleiner ist als der Durchmesser der Kontaktöffnung und die Federelemente anschließend voneinander weg verlaufend ausgebildet sind, sodass eine Einlaufphase gebildet wird, wobei der größte Abstand der Federelemente außerhalb des Anschlussklemmengehäuses angeordnet ist und wobei der größte Abstand der Federelemente ist als der Durchmesser der Kontaktöffnung, sodass eine zuverlässige Kontaktierung zwischen Kontaktelement und Kontaktfläche auf der Innenseite der Kontaktöffnung ermöglicht wird.From the WO 2010/063459 A1 a terminal with an insulating terminal housing and at least one or at least two disposed in the terminal housing contacts for connecting an electrical conductor is known in which a contact element, which is in the terminal housing with one of the contacts in electrically conductive connection, through a first opening of the terminal housing on the outside of the terminal housing is guided and comes to make an electrical contact between the circuit board and the contact when placing the terminal on the circuit board with a contact surface of the circuit board in contact, wherein the contact element comprises two leaf spring-like spring elements, which are suitable, a contact surface , Which is arranged on the inside of a contact opening of the circuit board to contact and which at least partially away from each other and then running towards each other running sin d, wherein the distance of the free ends of the spring elements is smaller than the diameter of the contact opening and the spring elements are then formed extending away from each other, so that a break-in phase is formed, wherein the largest distance of the spring elements outside the terminal housing is arranged and wherein the largest distance of Spring elements is as the diameter of the contact opening, so that a reliable contact between the contact element and contact surface on the inside of the contact opening is made possible.

Federelemente, die zumindest abschnittsweise als gegenläufig ausgebildete bogensegmentförmige Elemente ausgebildet sind, sind aus der US 3,717,841 A und der US 4,384,757 A bekannt. Federelemente, die im Bereich der ersten Öffnung einen Abstand aufweisen, der größer ist als der Durchmesser der ersten Öffnung, ist einerseits aus dem vorstehend gewürdigten Stand der Technik, darüber hinaus aber auch aus der US 7,399,187 B1 bekannt.Spring elements which are formed at least in sections as counter-shaped arc segment-shaped elements are made of US 3,717,841 A and the US 4,384,757 A known. Spring elements, which have a distance in the region of the first opening, which is greater than the diameter of the first opening, on the one hand from the above-appreciated prior art, but also from the US 7,399,187 B1 known.

Die Aufgabe der Erfindung besteht darin, eine kostengünstige steckbare Anschlussklemmen-Leiterplatten-Anordnung bereitzustellen, welche eine zuverlässige Kontaktierung mit einer Leiterplatte sowie eine exakte relative Positionierung der Anschlussklemme in einer Kontaktöffnung einer Leiterplatte gewährleistet und Schutz gegen mechanische Beschädigung bietet.The object of the invention is to provide a cost-effective plug-in terminal board assembly, which ensures a reliable contact with a circuit board and an exact relative positioning of the terminal in a contact opening of a circuit board and provides protection against mechanical damage.

Die Aufgabe der Erfindung wird gelöst durch eine Anschlussklemmen-Leiterplatten-Anordnung mit den Merkmalen des Patentanspruchs 1.The object of the invention is achieved by a terminal-printed circuit board assembly having the features of patent claim 1.

Vorteilhafte Ausgestaltungen und Weiterbildungen sind in den Unteransprüchen angegeben.Advantageous embodiments and further developments are specified in the subclaims.

Die erfindungsgemäße Anschlussklemmen-Leiterplattenanordnung umfasst eine Leiterplatte und eine Anschlussklemme mit einem isolierenden Anschlussklemmengehäuse und wenigstens einem oder wenigstens zwei in dem Anschlussklemmengehäuse angeordneten Klemmkontakten zum Anschließen eines elektrischen Leiters, wobei ein Kontaktelement, welches in dem Anschlussklemmengehäuse mit einem der Klemmkontakte oder mit zwei Klemmkontakten in elektrisch leitender Verbindung steht, durch eine erste Öffnung des Anschlussklemmengehäuses auf die Außenseite des Anschlussklemmengehäuses geführt ist und zur Herstellung eines elektrischen Kontakts zwischen der Leiterplatte und dem Klemmkontakt oder den Klemmkontakten bei Aufsetzen der Anschlussklemme auf die Leiterplatte mit einer Kontaktfläche der Leiterplatte in Kontakt kommt, wobei die Kontaktfläche auf der Innenseite einer Kontaktöffnung der Leiterplatte angeordnet ist und wobei das Kontaktelement zwei blattfederartige Federelemente aufweist, welche zumindest abschnittsweise voneinander weg und anschließend aufeinander zu verlaufend ausgebildet sind, wobei der Abstand der freien Enden der Federelemente kleiner ist als der Durchmesser der Kontaktöffnung, wenn die Anschlussklemme nicht auf die Leiterplatte aufgesetzt ist, und die Federelemente anschließend voneinander weg verlaufend ausgebildet sind, so dass eine Einlauffase gebildet wird, wobei der größte Abstand der Federelemente außerhalb des Anschlussklemmengehäuses angeordnet ist und wobei der größte Abstand der Federelemente, wenn die Anschlussklemme nicht auf die Leiterplatte aufgesetzt ist, größer ist als der Durchmesser der Kontaktöffnung, so dass eine zuverlässige Kontaktierung zwischen Kontaktelement und Kontaktfläche auf der Innenseite der Kontaktöffnung ermöglicht wird. Das bedeutet insbesondere, dass der Kontakt zwischen Federelement und Kontaktfläche der Leiterplatte vorzugsweise an der Stelle der Federelemente hergestellt wird, an der der größte Abstand der Federelemente im nicht eingesteckten Zustand der Anschlussklemme vorliegt.The terminal board circuit board assembly according to the invention comprises a printed circuit board and a terminal with an insulating terminal housing and at least one or at least two arranged in the terminal housing terminal contacts for connecting an electrical conductor, wherein a contact element which in the terminal housing with one of the terminal contacts or two terminal contacts in electrically conductive connection is passed through a first opening of the terminal housing on the outside of the terminal housing and for establishing an electrical contact between the circuit board and the terminal contact or the terminal contacts when placing the terminal on the circuit board with a contact surface of the circuit board comes into contact, wherein the contact surface is arranged on the inside of a contact opening of the printed circuit board and wherein the contact element comprises two leaf spring-like spring elements, which are at least partially away from each other and then running towards each other, wherein the distance between the free ends of the spring elements is smaller than that Diameter of the contact opening, when the terminal is not mounted on the circuit board, and the spring elements are then formed extending away from each other, so that an inlet chamfer is formed, wherein the largest distance of the spring elements outside the terminal housing is arranged and wherein the largest distance of the spring elements, If the terminal is not placed on the circuit board is greater than the diameter of the contact opening, so that a reliable contact between the contact element and contact surface on the inside of the contact opening ermögl is not. This means in particular that the contact between the spring element and the contact surface of the printed circuit board is preferably produced at the location of the spring elements at which the greatest distance between the spring elements in the non-inserted state of the terminal is present.

Eine derartige Anschlussklemmen-Leiterplatten-Anordnung zeichnet sich dadurch aus, dass sie durch die geometrische Ausgestaltung der blattfederartigen Federelemente in Kombination mit einem innerhalb einer Kontaktöffnung einer Leiterplatte angeordneten Innenkontakt die Möglichkeit einer einfachen sicheren elektrischen Kontaktierung der Leiterplatte über die Anschlussklemme schafft. Im aufgesetzten bzw. eingesteckten Zustand der Anschlussklemme, der bedingt durch die eine Einlauffase bereitstellende Ausgestaltung der Federelemente besonders schnell und einfach bereitstellbar ist, werden die Abschnitte der Federelemente, über die der Kontakt mit dem Innenkontakt hergestellt ist bedingt durch ihre geometrische Gestaltung, mit durch Federwirkung bereitgestelltem Anpressdruck an den Innenkontakt gedrückt und damit ein guter elektrischer Kontakt sichergestellt. Trotz der guten und sicheren Kontaktierung bleibt der Kontakt in der erfindungsgemäßen Anschlussklemmen-Leiterplatten-Anordnung aber lösbar; die Anschlussklemme kann bei Bedarf einfach abgezogen und einfach aufgesteckt werden, es handelt sich somit um eine steckbare Anschlussklemme.Such a terminal board assembly is characterized by the fact that it creates the possibility of a simple secure electrical contacting of the circuit board via the terminal by the geometric configuration of the leaf spring-like spring elements in combination with a disposed within a contact opening of a circuit board inner contact. In the attached or inserted state of the terminal, which is due to the provision of an inlet chamfer design of the spring elements particularly fast and easy to deploy, the sections the spring elements, via which the contact with the inner contact is made conditionally pressed by their geometric design, provided by spring action contact pressure against the inner contact, thus ensuring a good electrical contact. Despite the good and secure contact the contact in the terminal board assembly according to the invention but remains solvable; The terminal can be easily removed if necessary and simply plugged in, so it is a pluggable terminal.

Durch die zwei Federelemente nach Art einer Blattfeder ist ein längerer Federweg möglich, da das Kontaktelement nicht in sich federt, sondern die beiden blattfederartigen Federelemente jeweils als Ganzes federn, wodurch insbesondere ein zuverlässiger Kontakt zwischen dem Kontaktelement und der Kontaktfläche gewährleistet wird. Dadurch, dass die Kontaktfläche auf der Innenseite einer Kontaktöffnung der Leiterplatte angeordnet ist, kann durch das Aufstecken der Anschlussklemme mit dem Kontaktelement in die Kontaktöffnung bereits eine relative Positionierung zwischen der Anschlussklemme und der Leiterplatte hergestellt werden. Dadurch, dass der Abstand der freien Enden der Federelemente kleiner ist als der Durchmesser der Kontaktöffnung und sich die Federelemente anschließend voneinander weg verlaufend ausgebildet sind, wird eine Einlauffase gebildet, durch welche ein einfaches Einführen der blattfederartigen Federelemente in die Kontaktöffnung ermöglicht wird. Dadurch, dass der größte Abstand der Federelemente außerhalb des Anschlussklemmengehäuses angeordnet ist und größer ist als der Durchmesser der Kontaktöffnung, wird eine zuverlässige Kontaktierung zwischen dem Kontaktelement und der Kontaktfläche auf der Innenseite der Kontaktöffnung ermöglicht. Vorzugsweise sind die Federelemente zumindest abschnittsweise als gegenläufig ausgebildete bogensegmentförmige Elemente ausgebildet, welche besonders kostengünstig zu fertigen sind.Due to the two spring elements in the manner of a leaf spring, a longer spring travel is possible because the contact element does not spring in, but the two leaf spring-like spring elements each spring as a whole, which in particular a reliable contact between the contact element and the contact surface is guaranteed. Characterized in that the contact surface is arranged on the inside of a contact opening of the circuit board, by attaching the terminal with the contact element in the contact opening already a relative positioning between the terminal and the circuit board can be made. Characterized in that the distance between the free ends of the spring elements is smaller than the diameter of the contact opening and the spring elements are then formed extending away from each other, an inlet chamfer is formed, by which a simple insertion of the leaf spring-like spring elements is made possible in the contact opening. The fact that the greatest distance of the spring elements is arranged outside the terminal housing and is greater than the diameter of the contact opening, a reliable contact between the contact element and the contact surface on the inside of the contact opening is made possible. Preferably, the spring elements are at least partially formed as a counter-shaped arc segment-shaped elements, which are particularly inexpensive to manufacture.

Gemäß einer besonders bevorzugten Ausführungsform der Erfindung weisen die Federelemente im Bereich der ersten Öffnung einen Abstand auf, der größer ist als der Durchmesser der ersten Öffnung. Dadurch werden die Federelemente durch die erste Öffnung des Anschlussklemmengehäuses vorgespannt, was eine bessere Kontaktkraft zwischen dem Kontaktelement und der Kontaktfläche bewirkt.According to a particularly preferred embodiment of the invention, the spring elements in the region of the first opening at a distance which is greater than the diameter of the first opening. Characterized the spring elements are biased by the first opening of the terminal housing, which causes a better contact force between the contact element and the contact surface.

Gemäß einer vorteilhaften Ausführungsform der Erfindung sind die Federelemente im Querschnitt gewölbt ausgebildet, um eine größere Anlagefläche zwischen den blattfederartigen Federelementen und der Kontaktfläche auf der Innenseite der Kontaktöffnung zu ermöglichen.According to an advantageous embodiment of the invention, the spring elements are curved in cross-section to allow a larger contact surface between the leaf spring-like spring elements and the contact surface on the inside of the contact opening.

Vorzugsweise sind pro Kontaktelement zwei Klemmkontakte in dem Anschlussklemmengehäuses angeordnet und jedes der Federelemente des Kontaktelements steht mit genau einem Klemmkontakt in elektrisch leitender Verbindung. Dadurch wird es ermöglicht, an eine Kontaktfläche auf einfache Art und Weise zwei elektrische Leiter über die beiden Klemmkontakte anzuschließen.Preferably, two terminal contacts are arranged in the terminal housing per contact element and each of the spring elements of the contact element is connected to exactly one terminal contact in electrically conductive connection. This makes it possible to connect to a contact surface in a simple manner two electrical conductors via the two terminal contacts.

Vorzugsweise weist die Kontaktöffnung der Leiterplatte auf ihrer Innenseite zwei elektrisch gegeneinander isolierte Kontaktflächen auf, so dass auf engem Raum in einer Kontaktöffnung elektrisch gegeneinander isoliert über die Anschlussklemme zwei elektrische Leiter angeschlossen werden können.Preferably, the contact opening of the circuit board on its inside two electrically mutually insulated contact surfaces, so that in a small space in a contact opening electrically isolated from each other via the terminal two electrical conductors can be connected.

Erfindungsgemäß weist die erste Öffnung auf der Außenseite des Anschlussklemmengehäuses einen abschnittsweise umlaufenden Rand auf, welcher die aus der ersten Öffnung herausragenden freien Enden der Federelemente gegen mechanische Beschädigungen schützt.According to the invention, the first opening on the outside of the terminal housing has a sectionally circumferential Edge on which protects the protruding from the first opening free ends of the spring elements against mechanical damage.

Ein besonders wirksamer Schutz gegen mechanische Beschädigungen der freien Enden der blattfederartigen Federelemente wird erreicht, wenn vorzugsweise auf der Außenseite des Anschlussklemmengehäuses angrenzend an die erste Öffnung eine einseitig geschlossene Hülse angeordnet ist, welche in einer Seitenwandung zwei Öffnungen aufweist, durch welche die freien Enden der Federelemente und insbesondere der Bereich des größten Abstands der beiden Federelemente zugänglich sind, wobei die Hülse in die Kontaktöffnung einführbar ist. Zusätzlich wird durch die Hülse eine Positionierung der Anschlussklemme relativ zu der Leiterplatte ermöglicht, insbesondere, wenn die Hülse im Wesentlichen passgenau in die Kontaktöffnung einsetzbar ist.A particularly effective protection against mechanical damage to the free ends of the leaf-spring-like spring elements is achieved if preferably on the outside of the terminal housing adjacent to the first opening a sleeve closed on one side is arranged, which has two openings in a side wall through which the free ends of the spring elements and in particular the area of greatest distance of the two spring elements are accessible, wherein the sleeve is insertable into the contact opening. In addition, a positioning of the connection terminal relative to the printed circuit board is made possible by the sleeve, in particular if the sleeve can be inserted into the contact opening substantially accurately.

Die Erfindung wird anhand der Figuren ausführlich erläutert. Es zeigen:

Figur 1
eine perspektivische Ansicht eines ersten Ausführungsbeispiels einer Anschlussklemme,
Figur 2
die Anschlussklemme gemäß Figur 1 in einer teilweise geschnittenen Darstellung,
Figur 3
einen Längsschnitt durch die Anschlussklemme gemäß Figur 1,
Figur 4
eine perspektivische Ansicht eines zweiten Ausführungsbeispiels einer Anschlussklemme,
Figur 5
die Anschlussklemme gemäß Figur 3 in einer teilweise geschnittenen Darstellung,
Figur 6a
eine dreidimensionale Darstellung einer Leiterplatten-Anschlussklemmen-Anordnung mit einer Anschlussklemme gemäß Figur 4,
Figur 6b
einen Längsschnitt durch die Leiterplatten-Anschlussklemmen-Anordnung aus Figur 6a, und
Figur 6c
eine Ausschnittsvergrößerung des Ausschnitts A aus Figur 6b.
The invention will be explained in detail with reference to FIGS. Show it:
FIG. 1
a perspective view of a first embodiment of a terminal,
FIG. 2
the terminal according to FIG. 1 in a partially sectioned illustration,
FIG. 3
a longitudinal section through the terminal according to FIG. 1 .
FIG. 4
a perspective view of a second embodiment of a terminal,
FIG. 5
the terminal according to FIG. 3 in a partially sectioned illustration,
FIG. 6a
a three-dimensional view of a circuit board terminal assembly with a terminal according to FIG. 4 .
FIG. 6b
a longitudinal section through the PCB terminal assembly FIG. 6a , and
FIG. 6c
an enlarged detail of the section A from FIG. 6b ,

Die Figuren 1 bis 3 zeigen ein erstes Ausführungsbeispiel einer Anschlussklemme 10 mit einem Anschlussklemmengehäuse 12 aus einem isolierenden Material. Das Anschlussklemmengehäuse 12 weist dabei insbesondere einen Gehäusedeckel 19 auf, welcher es ermöglicht, dass der Innenraum des Anschlussklemmengehäuses 12 auf einfache Art und Weise zugänglich ist. In dem Anschlussklemmengehäuse 12 sind drei Klemmkontakte 20 angeordnet, welche im Wesentlichen identisch zueinander ausgebildet sind. Selbstverständlich können auch mehr oder weniger Klemmkontakte 20, insbesondere nur ein Klemmkontakt 20, in dem Anschlussklemmengehäuse 12 angeordnet werden. Die Klemmkontakte 20 sind als Schraubklemmkontakt ausgebildet, wobei durch eine zweite Öffnung 16 ein elektrischer Leiter in den Klemmkontakt 20 eingeführt werden kann, wo er mit einer Klemmschraube 25, welche durch eine dritte Öffnung 18 des Anschlussklemmengehäuses 12 zugänglich ist, fixiert werden kann. Statt eines Schraubkontakts kann auch ein Federklemmkontakt oder ähnliches verwendet werden.The FIGS. 1 to 3 show a first embodiment of a terminal 10 with a terminal housing 12 made of an insulating material. The terminal housing 12 has in particular a housing cover 19, which makes it possible that the interior of the terminal housing 12 is accessible in a simple manner. In the terminal housing 12, three clamping contacts 20 are arranged, which are formed substantially identical to each other. Of course, more or less clamping contacts 20, in particular only one clamping contact 20, can be arranged in the terminal housing 12. The terminal contacts 20 are designed as Schraubklemmkontakt, wherein an electrical conductor can be inserted into the terminal contact 20 through a second opening 16, where it can be fixed with a clamping screw 25 which is accessible through a third opening 18 of the terminal housing 12. Instead of a screw terminal, a spring terminal contact or the like can be used.

An dem Klemmkontakt 20 ist ein Kontaktelement 30 angeordnet, welches insbesondere einstückig an dem Klemmkontakt 20 angeordnet ist und welches durch ein erstes Federelement 32 und ein zweites Federelement 34 gebildet ist. Die beiden Federelemente 32, 34 sind dabei als blattfederartige Federelemente 32, 34 ausgebildet. Die beiden Federelemente 32, 34 weisen ein freies Ende 32a, 34a, daran anschließend einen ersten Bereich 32b, 34b, daran anschließend einen zweiten Bereich 32c, 34c und daran anschließend einen dritten Bereich 32d, 34d auf. In dem dritten Bereich 32d, 34d verlaufen die beiden Federelemente 32, 34 im Wesentlichen parallel (vgl. insbesondere Figur 3). Der dritte Bereich 32d, 34d beider Federelemente 32, 34 ist mit dem Kontaktelement 20 verbunden. Ausgehend von dem freien Ende 32a, 34a, verlaufen die beiden Federelemente 32, 34 in dem ersten Bereich 32b, 34b voneinander weg und in dem zweiten Bereich 32c, 34c aufeinander zu. Beispielsweise können, wie vorliegend in den Figuren gezeigt, die Federelemente 32, 34 in dem ersten Bereich 32b, 34b und dem zweiten Bereich 32c, 34c als gegenläufig ausgebildete Bogensegmente ausgebildet sein. Zwischen dem ersten Bereich 32b, 34b und dem zweiten Bereich 32c, 34c weisen die Federelemente 32, 34 einen größten Abstand a auf, welcher außerhalb des Anschlussklemmengehäuses 12 auf der Außenseite der ersten Öffnung 14 angeordnet ist.At the clamping contact 20, a contact element 30 is arranged, which is in particular arranged integrally on the clamping contact 20 and which is formed by a first spring element 32 and a second spring element 34. The two spring elements 32, 34 are designed as leaf spring-like spring elements 32, 34. The two spring elements 32, 34 have a free end 32a, 34a, thereafter a first region 32b, 34b, subsequently a second region 32c, 34c and subsequently a third region 32d, 34d. In the third region 32d, 34d, the two spring elements 32, 34 extend substantially parallel (cf. FIG. 3 ). The third region 32 d, 34 d of both spring elements 32, 34 is connected to the contact element 20. Starting from the free end 32a, 34a, the two spring elements 32, 34 extend away from each other in the first region 32b, 34b and towards each other in the second region 32c, 34c. For example, as shown in the figures herein, the spring elements 32, 34 may be formed in the first region 32b, 34b and the second region 32c, 34c as counter-arc segments. Between the first region 32b, 34b and the second region 32c, 34c, the spring elements 32, 34 have a greatest distance a, which is arranged outside the terminal housing 12 on the outside of the first opening 14.

Der erste Bereich 32b, 34b der Federelemente 32, 34 bildet insbesondere eine Einlauffase, welche das Einführen des Kontaktelements 30 in eine Kontaktöffnung einer Leiterplatte vereinfacht. Der größte Abstand a der Federelemente 32, 34 ist größer als der Durchmesser der Kontaktöffnung, der Abstand d zwischen den freien Enden 32a, 34a der Federelemente 32, 34 kleiner als der Durchmesser der Kontaktöffnung der Leiterplatte. Dadurch wird eine zuverlässige Kontaktierung der Federelemente 32, 34 in der Kontaktöffnung der Leiterplatte gewährleistet. Insbesondere wird bei Abziehen der Anschlussklemme 10 aus der Kontaktöffnung der Leiterplatte unter Last der Abreißfunken im Bereich des freien Endes 32a, 34a der Federelemente 23, 34 gebildet und nicht in dem Bereich zwischen dem ersten Bereich 32b, 34b und dem zweiten Bereich 32c, 34c, welcher den Kontaktbereich der Federelemente 32, 34 mit der Kontaktfläche der Kontaktöffnung der Leiterplatte darstellt, so dass Beschädigungen der Federelemente 32, 34, die durch den Abreißfunken hervorgerufen werden können, in einem Bereich der Federelemente 32, 34 hervorgerufen werden, der nicht zur Herstellung des elektrisch leitenden Kontakts zwischen dem Klemmkontakt 20 und der Leiterplatte benötigt wird. Durch die Ausgestaltung des Kontaktelements 30 durch zwei unabhängige Federelemente 32, 34 wird ein größerer Federweg des Kontaktelements 30 in der Kontaktöffnung und somit eine bessere Kontaktkraft ermöglicht.The first region 32b, 34b of the spring elements 32, 34 forms in particular an inlet chamfer, which simplifies the insertion of the contact element 30 into a contact opening of a printed circuit board. The largest distance a of the spring elements 32, 34 is greater than the diameter of the contact opening, the distance d between the free ends 32a, 34a of the spring elements 32, 34 smaller than the diameter of the contact opening of the circuit board. This ensures a reliable contacting of the spring elements 32, 34 in the contact opening of the circuit board. In particular, when the terminal 10 is pulled out of the contact opening of the printed circuit board under load, the break-off spark is formed in the area of the free end 32a, 34a of the spring elements 23, 34 and not in the area between the first area 32b, 34b and the second area 32c, 34c. which represents the contact region of the spring elements 32, 34 with the contact surface of the contact opening of the printed circuit board, so that damage to the spring elements 32, 34, which may be caused by the Abrasive sparks, in a region of the spring elements 32, 34 are caused, which is not for the preparation of electrically conductive contact between the terminal contact 20 and the circuit board is needed. Due to the configuration of the contact element 30 by two independent spring elements 32, 34 a larger spring travel of the contact element 30 in the contact opening and thus a better contact force is possible.

Die Federelemente 32, 34 sind vorzugsweise zusätzlich im Querschnitt gewölbt ausgebildet.The spring elements 32, 34 are preferably additionally curved in cross section.

Die aus dem Anschlussgehäuse 12 herausragenden Federelemente 32, 34 werden durch einen abschnittsweise umlaufenden Rand 40, der an der ersten Öffnung 14 angeordnet ist, gegen mechanische Beschädigungen geschützt. Der Rand 40 weist dabei erfindungsgemäß einen ersten Abschnitt 41 und einen zweiten Abschnitt 42 auf, welche am Rand der ersten Öffnung 14 angeordnet sind und jeweils an die Federelemente 32, 34 angrenzen. Die Abschnitte 41, 42 des Rands 40 sorgen dabei zusätzlich für eine exakte relative Positionierung der Anschlussklemme 10 in der Kontaktöffnung der Leiterplatte.The protruding from the terminal housing 12 spring elements 32, 34 are protected by a partially circumferential edge 40 which is disposed at the first opening 14 against mechanical damage. According to the invention, the edge 40 has a first section 41 and a second section 42, which are arranged on the edge of the first opening 14 and adjoin the spring elements 32, 34, respectively. The sections 41, 42 of the edge 40 additionally ensure an exact relative positioning of the connection terminal 10 in the contact opening of the printed circuit board.

Die Figuren 4 bis 6c zeigen ein zweites Ausführungsbeispiel einer erfindungsgemäßen Anschlussklemme 10', wobei gleiche Bezugsziffern gleiche oder wesensgleiche Teile wie in dem ersten Ausführungsbeispiel der Anschlussklemme 10 bezeichnen und zur besseren Übersicht nicht sämtliche Bezugsziffern in sämtlichen Figuren angegeben sind.The FIGS. 4 to 6c show a second embodiment of a terminal 10 'according to the invention, wherein like reference numerals the same or similar parts as in the first Designate embodiment of the terminal 10 and not all reference numerals are given in all figures for clarity.

In der Anschlussklemme 10 gemäß dem ersten Ausführungsbeispiel ist pro Kontaktelement 30 genau ein Klemmkontakt 20 vorgesehen. Dabei können beliebig viele Klemmkontakte 20 mit jeweils einem Kontaktelement 20 in dem Anschlussklemmengehäuse 12 angeordnet werden. Die Anschlussklemme 10' gemäß dem zweiten Ausführungsbeispiel unterscheidet sich von dem ersten Ausführungsbeispiel der Anschlussklemme 10 einerseits dadurch, dass pro Kontaktelement 30 zwei Klemmkontakte 20a, 20b vorhanden sind, wobei das erste Federelement 32 über den dritten Bereich 32d in elektrisch leitender Verbindung mit dem einen Klemmkontakt 20a steht und insbesondere einstückig an diesem angeformt ist, während das zweite Federelement 34 über den dritten Bereich 34d in elektrisch leitender Verbindung mit dem Klemmkontakt 20b steht und insbesondere einstückig an diesem angeformt ist. Dadurch wird es ermöglicht, an eine Kontaktöffnung einer Leiterplatte über zwei Klemmkontakte 20a, 20b zwei elektrische Leiter anzuschließen. Dabei können beliebig viele Kontaktelemente 30 mit jeweils zwei Klemmkontakten 20a, 20b in dem Anschlussklemmengehäuse 12 angeordnet werden. Grundsätzlich ist es natürlich auch möglich, in einem Anschlussklemmengehäuse 12 sowohl Kontaktelemente 30, welche mit nur einem Klemmkontakt 20 in Verbindung stehen, als auch Kontaktelemente 30, welche mit jeweils zwei Klemmkontakten 20a, 20b in Verbindung stehen, anzuordnen.In the terminal 10 according to the first embodiment, exactly one terminal contact 20 is provided per contact element 30. In this case, any number of clamping contacts 20 can be arranged, each with a contact element 20 in the terminal housing 12. The terminal 10 'according to the second embodiment differs from the first embodiment of the terminal 10 on the one hand, that per contact element 30 two terminal contacts 20a, 20b are present, the first spring element 32 via the third region 32d in electrically conductive connection with the one terminal contact 20a and in particular integrally formed on this, while the second spring element 34 is in electrical conduction connection with the clamping contact 20b over the third region 34d and in particular integrally formed thereon. This makes it possible to connect two electrical conductors to a contact opening of a printed circuit board via two terminal contacts 20a, 20b. Any number of contact elements 30 can be arranged in the terminal housing 12, each with two terminal contacts 20a, 20b. In principle, it is of course also possible to arrange in a terminal housing 12 both contact elements 30, which are connected to only one clamping contact 20, and contact elements 30, which are connected to two terminal contacts 20a, 20b in combination.

In der Kontaktöffnung kann eine umlaufende Kontaktfläche ausgebildet sein, so dass die beiden an die Klemmkontakte 20a, 20b angeschlossenen elektrischen Leiter auf dasselbe elektrische Potential geführt werden. Es ist jedoch auch möglich, in der Kontaktöffnung zwei gegeneinander elektrisch isolierte Kontaktflächen anzubringen, wobei das erste Federelement 32 in elektrisch leitendem Kontakt mit der ersten Kontaktfläche und das zweite Federelement 34 in elektrisch leitendem Kontakt mit der zweiten Kontaktfläche steht, so dass die beiden an die Klemmkontakte 20a, 20b angeschlossenen elektrischen Leiter auf unterschiedliches elektrisches Potential geführt werden können.A circumferential contact surface may be formed in the contact opening, so that the two electrical conductors connected to the terminal contacts 20a, 20b are led to the same electrical potential. However, it is also possible in the contact opening to provide two mutually electrically insulated contact surfaces, wherein the first spring member 32 is in electrically conductive contact with the first contact surface and the second spring element 34 in electrically conductive contact with the second contact surface, so that the two connected to the terminal contacts 20a, 20b electrical conductor can be performed on different electrical potential.

Ein weiterer Unterschied des zweiten Ausführungsbeispiels der Anschlussklemme 10' gegenüber dem ersten Ausführungsbeispiel der Anschlussklemme 10 liegt in der Art und Weise, wie die aus dem Anschlussklemmengehäuse 12 herausgeführten Federelemente 32, 34 gegen mechanische Beschädigung geschützt werden. Gemäß dem zweiten Ausführungsbeispiel der Anschlussklemme 10' ist eine einseitig durch einen Deckel 51 geschlossene Hülse 50 vorgesehen, die auf die erste Öffnung 14 auf der Außenseite des Anschlussklemmengehäuses 12 aufgesetzt ist, welche in ihrer Seitenwandung 52 zwei Öffnungen 54 aufweist, die insbesondere diametral gegenüberliegend angeordnet sind, und durch welche die Kontaktbereiche der Federelemente 32, 34 zugänglich sind. Durch die Hülse 50, welche insbesondere im Wesentlichen passgenau in die Kontaktöffnung der Leiterplatte einsetzbar ist, wird eine zuverlässige relative Positionierung der Anschlussklemme 10' gegenüber der Leiterplatte ermöglicht.Another difference of the second embodiment of the terminal 10 'over the first embodiment of the terminal 10 is the way in which the out of the terminal housing 12 led out spring elements 32, 34 are protected against mechanical damage. According to the second embodiment of the terminal 10 'is provided on one side by a lid 51 closed sleeve 50 which is placed on the first opening 14 on the outside of the terminal housing 12, which has two openings 54 in its side wall 52, in particular arranged diametrically opposite one another are, and through which the contact areas of the spring elements 32, 34 are accessible. By the sleeve 50, which is in particular substantially accurately fit into the contact opening of the circuit board, a reliable relative positioning of the terminal 10 'relative to the circuit board is possible.

Selbstverständlich ist es möglich, bei der Anschlussklemme 10 gemäß dem ersten Ausführungsbeispiel der Erfindung eine Hülse 50 wie gemäß dem zweiten Ausführungsbeispiel der Anschlussklemme 10' vorzusehen oder auch bei dem ersten Ausführungsbeispiel der Anschlussklemme 10 zwei Klemmkontakte 20a, 20b pro Kontaktelement 30 vorzusehen.Of course, it is possible to provide in the terminal 10 according to the first embodiment of the invention, a sleeve 50 as in the second embodiment of the terminal 10 'or even in the first embodiment of the terminal 10, two terminal contacts 20a, 20b per contact element 30 provide.

Aus den Figuren 6a bis 6c, die eine Anschlussklemmen-Leiterplatten-Anordnung 70 mit einer Anschlussklemme gemäß dem zweiten Ausführungsbeispiel der Erfindung in unterschiedlichen Darstellungen bzw. als Ausschnittsvergrößerung zeigen, lässt sich besonders gut entnehmen, wie der Kontakt einer erfindungsgemäßen Anschlussklemme mit einer Leiterplatte hergestellt wird.From the FIGS. 6a to 6c showing a terminal board assembly 70 with a terminal according to the second embodiment of the invention in different representations and as an enlargement, it can be seen particularly well how the contact of a terminal according to the invention with a circuit board is made.

Figur 6a zeigt eine exemplarische Anschlussklemmen-Leiterplatten-Anordnung 70 mit einer Leiterplatte 60 mit Leiterbahnen 61, die jeweils durch in der Leiterplatte 60 angeordnete Kontaktöffnungen 62 unterbrochen werden. Auf die Leiterplatte 60 aufgesteckt ist eine Anschlussklemme 10'gemäß der zweiten Ausführungsform der Erfindung, wie sie in den Figuren 4 und 5 in nicht eingestecktem Zustand dargestellt ist und vorstehend beschrieben wurde, so dass durch die Kontaktöffnungen 62 hindurch die Deckel 51 zu sehen sind. FIG. 6a shows an exemplary terminal board assembly 70 with a circuit board 60 with traces 61, which are interrupted by arranged in the circuit board 60 contact openings 62 respectively. Placed on the circuit board 60 is a terminal 10 'according to the second embodiment of the invention, as shown in the FIGS. 4 and 5 is shown in not plugged state and has been described above, so that through the contact openings 62 through the lid 51 can be seen.

Wie man besonders gut an der in Figur 6c dargestellten Ausschnittsvergrößerung des Bereichs A der Schnittdarstellung gemäß Figur 6b erkennt, weisen die Kontaktöffnungen 62 der Leiterplatte 60 jeweils Innenkontakte 63a und 63b auf, die mit zugehörigen Abschnitten 61a bzw. 61b einer Leiterbahn 61 elektrisch leitend verbunden sind. Die durch die Innenkontakte 63a und 63b gebildete Kontaktfläche ist also innerhalb der Kontaktöffnung 62, genauer an deren inneren Rand, angeordnet.How to be particularly good at the in FIG. 6c shown detail enlargement of the area A of the sectional view according to FIG. 6b detects, the contact openings 62 of the circuit board 60 respectively on the inner contacts 63a and 63b, which are electrically connected to associated portions 61a and 61b of a conductor 61. The contact surface formed by the inner contacts 63a and 63b is thus arranged within the contact opening 62, more precisely at its inner edge.

Durch das Einstecken der Anschlussklemme 10', das dadurch erleichtert ist, dass der erste Bereich 32b, 34b der Federelemente 32, 34 eine Einlauffase bildet, werden die Federelemente 32,34, deren größter Abstand im in den Figuren 4 und 5 dargestellten, nicht eingesteckten bzw. nicht auf die Leiterplatte 60 asufgesetzten Zustand größer als der Durchmesser der Kontaktöffnung 62 ist, zusammengedrückt und stehen unter einer mechanischen Spannung. Mit anderen Worten sind im eingeführten Zustand die Abstände a und d reduziert. Dadurch wird eine zuverlässige Kontaktierung der Federelemente 32, 34 zu den Innenkontakten 63a,63b in der Kontaktöffnung 62 der Leiterplatte 60 gewährleistet.By inserting the terminal 10 ', which is facilitated by the fact that the first region 32b, 34b of the spring elements 32, 34 forms an inlet chamfer, the spring elements 32,34, the largest distance in the in the FIGS. 4 and 5 shown, not plugged or not on the circuit board 60 asssuffed state greater than the diameter of the contact opening 62 is compressed and under a mechanical tension. In other words, the distances a and d are reduced in the inserted state. This ensures a reliable contacting of the spring elements 32, 34 to the inner contacts 63a, 63b in the contact opening 62 of the printed circuit board 60.

Der Kontakt wird dabei insbesondere an der und in der unmittelbaren Umgebung der Übergangsstelle zwischen dem ersten Bereich 32b, 34b und dem zweiten Bereich 32c, 34c hergestellt, also ungefähr an der Stelle, an der im nicht eingesteckten Zustand der Anschlussklemme 10' die Federelemente 32,34 den größten Abstand voneinander haben.The contact is thereby produced, in particular, on and in the immediate vicinity of the transition point between the first region 32b, 34b and the second region 32c, 34c, ie approximately at the point at which the spring element 32, in the non-inserted state of the connecting terminal 10 ', 34 have the greatest distance from each other.

Wie man anhand eines Vergleichs zwischen Figur 6b und Figur 3, insbesondere der jeweiligen Enden 32a,34a und Bereiche 32b,32c und 34b,34c der Federelemente 32,34 unmittelbar erkennt, kann auf genau gleiche Weise wie in den Figuren 6a bis 6c für eine Anschlussklemme 10' gemäß dem zweiten Ausführungsbeispiel der Erfindung gezeigt ist auch eine Leiterplatten-Anschlussklemmen-Anordnung mit sicherer elektrischer Kontaktierung zwischen den Federelementen 32,34 und einem Innenkontakt 63a,63b der Leiterplatte 60 durch einfaches Einstecken einer Anschlussklemme 10 gemäß dem ersten Ausführungsbeispiel der Erfindung geschaffen werden. Die exemplarisch am Beispiel der zweiten Ausführungsform diskutierte Ausbildung des elektrischen Kontakts zum Innenkontakt 63a,63b wird durch die Formgebung der Federelemente 32,34 in den Bereichen 32b,32c bzw. 34b,34c und den Abstand dieser Bereiche voneinander bestimmt und ist somit von den Unterschieden zwischen den Anschlussklemmen 10 und 10' unabhängig.How to make a comparison between FIG. 6b and FIG. 3 , in particular the respective ends 32a, 34a and portions 32b, 32c and 34b, 34c of the spring elements 32,34 immediately recognizes, can in exactly the same way as in the FIGS. 6a to 6c for a terminal 10 'according to the second embodiment of the invention is also shown a circuit board terminal assembly with secure electrical contact between the spring elements 32,34 and an inner contact 63a, 63b of the circuit board 60 by simply inserting a terminal 10 according to the first embodiment of Invention are created. The embodiment of the electrical contact with the inner contact 63a, 63b discussed by way of example using the example of the second embodiment is determined by the shape of the spring elements 32, 34 in the regions 32b, 32c, 34b, 34c and the distance of these regions from one another, and is thus different between the terminals 10 and 10 'independently.

Sowohl bei der Anschlussklemme 10 gemäß der ersten Ausführungsform der Erfindung als auch bei der Anschlussklemme 10'gemäß der zweiten Ausführungsform der Erfindung handelt es sich somit um steckbare Anschlussklemmen 10,10', die auf eine Leiterplatte 60 aufgesteckt und wieder abgezogen werden können und bei denen insbesondere der elektrische Kontakt nicht erst durch ein Verlöten mit der Leiterplatte 60 hergestellt werden muss.Both in the terminal 10 according to the first embodiment of the invention and in the terminal 10 'according to the second embodiment of the invention are thus pluggable terminals 10,10', which can be plugged onto a circuit board 60 and withdrawn and in which in particular, the electrical contact does not have to be made by soldering to the printed circuit board 60 first.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Anschlussklemmeterminal
10'10 '
Anschlussklemmeterminal
1212
AnschlussklemmengehäuseTerminal housing
1414
erste Öffnungfirst opening
1616
zweite Öffnungsecond opening
1818
dritte Öffnungthird opening
1919
Gehäusedeckelhousing cover
2020
Klemmkontaktclamping contact
20a20a
Klemmkontaktclamping contact
20b20b
Klemmkontaktclamping contact
2525
Klemmschraubeclamping screw
3030
Kontaktelementcontact element
3232
erstes Federelementfirst spring element
32a32a
freies Endefree end
32b32b
erster Bereichfirst area
32c32c
zweiter Bereichsecond area
32d32d
dritter Bereichthird area
3434
zweites Federelementsecond spring element
34a34a
freies Endefree end
34b34b
erster Bereichfirst area
34c34c
zweiter Bereichsecond area
34d34d
dritter Bereichthird area
4040
Randedge
4141
erster Abschnittfirst section
4242
zweiter Abschnittsecond part
5050
Hülseshell
5151
Deckelcover
5252
Seitenwandungsidewall
5454
Öffnungopening
aa
Abstanddistance
dd
Abstanddistance
6060
Leiterplattecircuit board
61a61a
Leiterbahnconductor path
61b61b
Leiterbahnconductor path
6262
Kontaktöffnungcontact opening
63a63a
Innenkontaktinternal contact
63b63b
Innenkontaktinternal contact
7070
Anschlussklemmen-Leiterplatten-AnordnungTerminals-circuit board assembly

Claims (6)

  1. Printed circuit board (60) and a connecting terminal (10, 10') having an insulating connecting terminal housing (12) and at least one or at least two clamp contacts (20, 20a, 20b) arranged in the connecting terminal housing (12) for connecting an electrical conductor, wherein a contact element (30), which in the connecting terminal housing (12) is connected in an electrically conductive manner to one of the clamp contacts (20) or to two clamp contacts (20a, 20b), is guided through a first opening (14) of the connecting terminal housing (12) to the outer side of the connecting terminal housing (12) and, when the connecting terminal (10) is placed onto the printed circuit board (60), comes into contact with a contact area of the printed circuit board (60) in order to establish an electrical contact between the printed circuit board (60) and the clamp contact (20) or the clamp contacts (20a, 20b), wherein the contact area is arranged on the inner side of a contact opening (62) of the printed circuit board (60) and the contact element (30) has two leaf-spring-like spring elements (32, 34) which are designed to extend away from one another and then towards one another at least in some sections, wherein the distance (d) between the free ends (32a, 34a) of the spring elements (32, 34) is smaller than the diameter of the contact opening (62) when the connecting terminal (10, 10') is not placed on the printed circuit board (60), and the spring elements (32, 34) are then designed to extend away from one another so that a lead chamfer is formed, wherein the greatest distance (a) between the spring elements (32, 34) is arranged outside of the connecting terminal housing (12), and wherein the greatest distance (a) between the spring elements (32, 34), when the connecting terminal (10, 10') is not placed on the printed circuit board (60), is larger than the diameter of the contact opening (62) so that it is possible to achieve reliable contacting between the contact element and the contact area on the inner side of the contact opening (62), characterized in that the first opening (14) on the outer side of the connecting terminal housing (12) has a rim (40) extending around in sections, said rim having a first section (41) and a second section (42) which are arranged on the rim of the first opening (14) and each adjoin the spring elements (32, 34).
  2. Connecting terminal/printed circuit board arrangement (70) according to any of the preceding claims, characterized in that the spring elements (32, 34) are designed at least in some sections as arc-segment-like elements which are designed to extend in opposite directions.
  3. Connecting terminal/printed circuit board arrangement (70) according to any of the preceding claims, characterized in that the spring elements (32, 34) in the region of the first opening (14) are at a distance that is larger than the diameter of the first opening (14).
  4. Connecting terminal/printed circuit board arrangement (70) according to any of the preceding claims, characterized in that the spring elements (32, 34) are designed to be curved in cross-section.
  5. Connecting terminal/printed circuit board arrangement (70) according to any of the preceding claims, characterized in that a sleeve (50) which is closed at one side is arranged on the outer side of the connecting terminal housing (12) adjacent to the first opening (14), which sleeve has in a side wall (52) two openings (54), through which it is possible to access the free ends (32a, 34a) of the spring elements (32, 34) and in particular the area of the greatest distance between the two spring elements (32, 34), wherein the sleeve (50) can be introduced into the contact opening (62).
  6. Connecting terminal/printed circuit board arrangement (70) according to claim 1, characterized in that the contact opening (62) of the printed circuit board (60) has on its inner side two contact areas which are electrically insulated from one another.
EP11182481.9A 2010-09-27 2011-09-23 Connection terminal Active EP2434582B1 (en)

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EP2434582A1 (en) 2012-03-28
US8366479B2 (en) 2013-02-05
DE102010046563B4 (en) 2018-05-03
DE102010046563A1 (en) 2012-03-29

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