EP1950836B1 - Electrical terminal - Google Patents

Electrical terminal Download PDF

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Publication number
EP1950836B1
EP1950836B1 EP07024066.8A EP07024066A EP1950836B1 EP 1950836 B1 EP1950836 B1 EP 1950836B1 EP 07024066 A EP07024066 A EP 07024066A EP 1950836 B1 EP1950836 B1 EP 1950836B1
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EP
European Patent Office
Prior art keywords
housing
clamp body
clamping screw
bottom face
clamping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07024066.8A
Other languages
German (de)
French (fr)
Other versions
EP1950836A2 (en
EP1950836A3 (en
Inventor
Hermann Stadler
Heike Anton
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MC Technology GmbH
Original Assignee
MC Technology GmbH
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Publication date
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Publication of EP1950836A2 publication Critical patent/EP1950836A2/en
Publication of EP1950836A3 publication Critical patent/EP1950836A3/en
Application granted granted Critical
Publication of EP1950836B1 publication Critical patent/EP1950836B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/422—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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

Definitions

  • the invention relates to an electrical terminal.
  • Electrical connection terminals which have an insulating housing, in which a terminal body receptacle is arranged with an insertion opening for an electrical conductor.
  • a clamping body In the terminal body receptacle, a clamping body can be used, which has an adjoining the insertion opening connection space for the electrical conductor.
  • a clamping screw is arranged on the clamping body in such a way that the electrical conductor introduced into the terminal space of the clamping body can be clamped in the clamping body via it.
  • the clamping body has at least one electrical contact, via which the contact between the terminal and, for example, a printed circuit board can be made, which is accessible through a bottom surface of the housing.
  • Such a terminal is for example the DE 39 01 307 A1 refer to.
  • the clamp body can be used in different ways in the insulating housing.
  • the housing is open at the bottom, so that the clamping body can be inserted from below into the insulating housing, whereupon a snap-in bottom for closing the open bottom of the housing is inserted into the housing.
  • the disadvantage here is that such housing with a bottom can not be used for surface mount terminals where the terminal body is to be soldered directly to the circuit board.
  • the clamping body is installed by means of a hanger body, wherein the hanger body is held captive in the insulating housing.
  • the insulating housing has a latching recess and the bracket body has a latching nose which engages in the latching recess.
  • the hanger body is an additional element of the electrical terminal, its manufacture and its installation is associated with additional costs.
  • the object of the invention is therefore to provide an electrical terminal, which is inexpensive to manufacture.
  • the terminal should be able to be realized in particular as a surface-mountable terminal.
  • the housing is integrally formed, has a one-sided insertion opening for the clamping body, which is located in the bottom surface of the housing, and is fastened via a latching mechanism on the clamping body. Due to the one-piece design of the housing manufacturing costs are initially saved.
  • the one-sided insertion opening of the clamping body can be inserted into the insulating housing.
  • the insertion opening is arranged in the bottom surface of the housing, so that the electrical contacts of the clamping body are directly accessible and in particular can be mounted directly on, for example, the circuit board.
  • the electrical contact is designed as an SMD (Surface Mounted Device) surface.
  • the insulating housing is fastened to the clamp body via a latching mechanism.
  • the insulating housing is thus snapped onto the clamping body, which allows a particularly simple and cost-effective installation.
  • the connection terminal can be constructed particularly simply and only has to have a clamping body with the corresponding clamping screw, without the need for additional elements for fastening the clamping body in the housing.
  • the latching mechanism has at least one latching hook formed on the housing, so that the housing can engage with the latching hook at a corresponding point of the clamping body, preferably in a latching recess formed on the clamping body, after being pushed onto the clamping body.
  • At least one slot preferably two slots, are preferably arranged in at least one side surface of the housing adjoining the bottom surface of the housing starting from the bottom surface.
  • the housing is elastic, because along the slot, the housing can widen slightly, so that insertion of the clamping body in the housing, for example, when overcoming the locking mechanisms, is possible.
  • the clamping body receiving a recess for the clamping screw, in which ribs are arranged, which rest at least partially on the clamping screw. These ribs prevent the screw from rotating during vibration, for example when transporting the terminal or when installing the terminal in corresponding vibrating devices.
  • an opening is arranged, through which the clamping screw is accessible.
  • the opening in the top of the housing may be formed such that even later, the clamping screw can still be used through this opening in the clamp body.
  • the diameter of the opening is smaller than the diameter of the clamping screw, thereby giving a loss protection for the clamping screw.
  • the electrical contact of the clamping body is designed as a contact pin, in particular as a solder pin, or as an SMD surface. Due to the downwardly open housing of the terminal, the SMD surface is directly accessible and can be easily placed directly on the PCB. Even when using contact pins, the downwardly open housing has the advantage that no corresponding openings must be incorporated into the bottom surface through which the contact pins can be guided out of the terminal body receiving through the housing to the outside. In particular, such openings increase the cost of manufacturing and complicate the installation of the terminal.
  • the bottom surface of the housing opposite the top of the housing is suitable as a contact surface for a placement machine, preferably substantially flat, so that, for example, a suction pads can attack on the surface in order to process the electrical terminals automated.
  • FIG. 1 shows a perspective view, FIG. 2 a longitudinal section through a first embodiment of a terminal 10.
  • the terminal 10 has a substantially cuboid housing 20 having a bottom surface 20a, a top 20b, a front 20c and a back 20d.
  • the housing 20 is substantially hollow and has a clamping body receptacle 22 for receiving a clamping body 30.
  • the bottom surface 20a is substantially open and thus forms an insertion opening 24 for the clamping body 30.
  • an insertion opening 21 is arranged, through which an electrical conductor can be inserted into the housing 20.
  • the clamping body 30 is made of an electrically conductive material and has a connection space 31 which adjoins the insertion opening 21 in the inserted into the housing 20 state of the clamping body 30, so that an inserted through the insertion opening 21 electrical conductor in the connection space 31 of Clamping body 30 comes to rest.
  • the clamping body 30 has a threaded bore 32 in which a clamping screw 40 is inserted. With the aid of the clamping screw 40, an electrical conductor inserted into the connection space 31 of the clamping body 30 can be clamped in the connection space 31.
  • the threaded bore 32 is such in the Clamping body 30 is arranged such that the clamping screw 40, when it is screwed into the threaded bore 32 and when the clamping body 30 is inserted into the clamping body receptacle 22 of the housing 20, in the direction of the upper side 20 b of the housing 20.
  • the clamping body receptacle 22 in this case has a recess 23 in which the clamping screw 40 comes to rest, in particular with its screw head 41.
  • the recess 23 may be closed in the direction of the upper side 20b of the housing 20. Preferably, however, it is accessible via an opening 25, which is arranged in the upper side 20b of the housing 20, so that the clamping screw 40 can be actuated through the opening 25.
  • the opening 25 can be substantially as large as the largest diameter of the clamping screw 40, ie substantially the diameter of the screw head 41 of the clamping screw 40, so that the clamping screw 40 are completely removed or reinserted by the top 20 b of the housing 20 can.
  • the diameter of the opening 25 is smaller than the largest diameter of the clamping screw 40, so that thereby a loss protection for the clamping screw 40 is given.
  • the recess 23 may have ribs, in particular longitudinal ribs, which rest at least partially on the clamping screw 40, in particular on the screw head 41 and prevent unintentional rotation of the clamping screw 40, for example, during vibrations.
  • the surface 20b is substantially planar, with at most the opening 25 in it.
  • the surface 20b is suitable as a contact surface for a placement machine, which can attack, for example, with a suction pads on the surface 20b.
  • the clamping body 30 has as electrical contact two contact pins, in particular two soldering pins 36, which are arranged on the side of the clamping body 30, which faces the threaded bore 32, and which thus come to lie substantially in the bottom surface 20a of the housing 20.
  • the soldering pins 36 protrude from the housing 20 through the bottom surface 20a and thus can be directly mounted on a circuit board. Since the solder pins 36 are electrically conductively connected to the clamping body 30, in this way the electrical contact between an inserted into the connection space 31 of the clamping body 30 electrical conductor and a corresponding conductor track of the circuit board can be produced.
  • the housing 20 is snapped onto the clamping body 30.
  • locking hooks 26 are arranged on the housing 20 in the region of the bottom surface 20a, which engage after pushing the housing 20 onto the clamping body 30 under the clamping body 30.
  • recesses can also be arranged in the clamping body 30, in which the latching hooks 26 engage.
  • FIG. 3 shows a perspective view of a second embodiment of the terminal 10, wherein like parts with the same reference numerals as in the embodiment according to the FIGS. 1 and 2 are designated.
  • the in FIG 3 illustrated terminal 10 is different from that in the FIGS. 1 and 2 illustrated embodiment of the terminal 10, characterized in that the present terminal 10 additionally comprises a wire guard 50, which from the top side 20b of the housing 20 facing side of the clamp body 30 on the front side 20c of the housing 20 facing front of the clamp body 30 in the terminal space 31 of Clamping body 30 is guided and extends so far into the connection space 31 that the wire guard 50 comes to rest below the lower end of the clamping screw 40.
  • the wire guard 50 thus lies between an electrical conductor inserted into the connection space 31 and the clamping screw 40, so that it prevents damage to the electrical conductor by the clamping screw 40.
  • FIGS. 4 and 5 show two perspective views
  • Figure 6 is a longitudinal section through a third embodiment of the terminal 10.
  • the same parts are again with the same reference numerals as in the first embodiment according to the FIGS. 1 and 2 designated.
  • the present terminal 10 differs from the first embodiment of the terminal 10 essentially in that the electrical contact of the clamp body 30 is not formed by the Lötpin 36, but by an SMD surface 37. This is essentially in the bottom surface 20a of the housing 20.
  • the terminal 10 can thus be particularly easily mounted on a corresponding circuit board, but with a reliable insulation of the terminal 10 is given.
  • the housing 20 in the back 20 d starting from the bottom surface 20 a two slots 27 on.
  • the slots 27 allow for easier insertion of the clamping body 30 in the housing 20, since the housing 20 along the slots 27 slightly deform, in particular can widen, so that the clamping body 30 simply in the housing 20, in particular to overcome the out of the latching hooks 26th formed Rastmechanismusses can be inserted.
  • the wire protection 50 according to the second embodiment according to FIG. 3 also be used in the third embodiment.
  • the housing 20 according to the first embodiment, which in the FIGS. 1 and 2 also have slots in the back 20d.
  • each housing 20 in the recess 23 may have additional ribs.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Description

Die Erfindung betrifft eine elektrische Anschlussklemme.The invention relates to an electrical terminal.

Bekannt sind elektrische Anschlussklemmen, welche ein isolierendes Gehäuse aufweisen, in welchem eine Klemmkörperaufnahme mit einer Einführöffnung für einen elektrischen Leiter angeordnet ist. In die Klemmkörperaufnahme ist ein Klemmkörper einsetzbar, welcher einen sich an die Einführöffnung anschließenden Anschlussraum für den elektrischen Leiter aufweist. An dem Klemmkörper ist eine Klemmschraube derart angeordnet, dass über sie der in den Anschlussraum des Klemmkörpers eingeführte elektrische Leiter im Klemmkörper festklemmbar ist. Der Klemmkörper weist wenigstens einen elektrische Kontakt auf, über welchen der Kontakt zwischen der Anschlussklemme und beispielsweise einer Leiterplatte hergestellt werden kann, der durch eine Bodenfläche des Gehäuses zugänglich ist. Eine derartige Anschlussklemme ist beispielsweise der DE 39 01 307 A1 zu entnehmen.Electrical connection terminals are known, which have an insulating housing, in which a terminal body receptacle is arranged with an insertion opening for an electrical conductor. In the terminal body receptacle, a clamping body can be used, which has an adjoining the insertion opening connection space for the electrical conductor. A clamping screw is arranged on the clamping body in such a way that the electrical conductor introduced into the terminal space of the clamping body can be clamped in the clamping body via it. The clamping body has at least one electrical contact, via which the contact between the terminal and, for example, a printed circuit board can be made, which is accessible through a bottom surface of the housing. Such a terminal is for example the DE 39 01 307 A1 refer to.

Der Klemmkörper kann dabei auf unterschiedliche Arten in das isolierende Gehäuse eingesetzt werden. Gemäß der DE 39 01 307 A1 ist das Gehäuse an der Unterseite offen, so dass der Klemmkörper von unten in das isolierende Gehäuse eingeschoben werden kann, woraufhin ein einschnappbarer Boden zum Verschließen der offenen Unterseite des Gehäuses in das Gehäuse eingesetzt wird. Nachteilig dabei ist, dass derartige Gehäuse mit einem Boden nicht für oberflächenmontierbare Anschlussklemmen verwendet werden können, bei denen der Klemmkörper direkt mit der Leiterplatte verlötet werden soll. Zudem besteht ein hoher Kostenaufwand für die Fertigung des Gehäuses auf Grund des zusätzlichen Bodens.The clamp body can be used in different ways in the insulating housing. According to the DE 39 01 307 A1 the housing is open at the bottom, so that the clamping body can be inserted from below into the insulating housing, whereupon a snap-in bottom for closing the open bottom of the housing is inserted into the housing. The disadvantage here is that such housing with a bottom can not be used for surface mount terminals where the terminal body is to be soldered directly to the circuit board. There is also a high Cost of the production of the housing due to the additional floor.

Aus der EP 0 584 481 B1 ist eine Anschlussklemme bekannt, bei welcher das isolierende Gehäuse von vorne mit dem Klemmkörper bestückt wird und durch Einschrauben der Klemmschraube in Position gehalten wird. Auch ein derartiges Gehäuse ist nicht für oberflächenmontierbare Klemmen verwendbar.From the EP 0 584 481 B1 is a terminal known, in which the insulating housing is fitted from the front with the clamp body and is held by screwing the clamping screw in position. Also, such a housing is not usable for surface mount terminals.

Der DE 25 11 385 A1 ist eine elektrische Anschlussklemme zu entnehmen, welche auf die Bodenplatte des Gehäuses verzichtet. In das Gehäuse wird der Klemmkörper mit Hilfe eines Bügelkörpers eingebaut, wobei der Bügelkörper unverlierbar in dem isolierenden Gehäuse gehalten ist. Dies ist insbesondere dadurch realisiert, dass das isolierende Gehäuse eine Rastausnehmung und der Bügelkörper eine in der Rastausnehmung fassende Rastnase aufweisen. Der Bügelkörper stellt jedoch ein zusätzliches Element der elektrischen Anschlussklemme dar, dessen Herstellung und dessen Einbau mit zusätzlichen Kosten verbunden ist.Of the DE 25 11 385 A1 is to be taken from an electrical terminal, which dispenses with the bottom plate of the housing. In the housing, the clamping body is installed by means of a hanger body, wherein the hanger body is held captive in the insulating housing. This is realized in particular in that the insulating housing has a latching recess and the bracket body has a latching nose which engages in the latching recess. However, the hanger body is an additional element of the electrical terminal, its manufacture and its installation is associated with additional costs.

Als weiterer Stand der Technik, dem ebenfalls jeweils elektrische Anschlussklemmen zu entnehmen sind, werden die DE 295 17 130 A1 , die DE 298 02 000 U1 , die DE 88 04 121 U1 , die DE 79 06 611 U1 und die DE 100 56 940 A1 genannt.As a further prior art, which also each electrical connection terminals are shown, the DE 295 17 130 A1 , the DE 298 02 000 U1 , the DE 88 04 121 U1 , the DE 79 06 611 U1 and the DE 100 56 940 A1 called.

Die Aufgabe der Erfindung besteht daher darin, eine elektrische Anschlussklemme bereitzustellen, welche kostengünstig herzustellen ist. Dabei soll die Anschlussklemme jedoch insbesondere auch als oberflächenmontierbare Klemme realisiert werden können.The object of the invention is therefore to provide an electrical terminal, which is inexpensive to manufacture. However, the terminal should be able to be realized in particular as a surface-mountable terminal.

Die Aufgabe wird erfindungsgemäß gelöst durch eine Anschlussklemme mit den Merkmalen des Patentanspruchs 1.The object is achieved by a terminal with the features of claim 1.

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

Erfindungsgemäß ist das Gehäuse einstückig ausgebildet, weist eine einseitige Einschuböffnung für den Klemmkörper auf, welche sich in der Bodenfläche des Gehäuses befindet, und ist über ein Rastmechanismus an dem Klemmkörper befestigbar. Durch die einstückige Ausbildung des Gehäuses werden zunächst Herstellungskosten eingespart. Durch die einseitige Einschuböffnung kann der Klemmkörper in das isolierende Gehäuse eingeschoben werden. Dabei ist die Einschuböffnung in der Bodenfläche des Gehäuses angeordnet, damit die elektrischen Kontakte des Klemmkörpers direkt zugänglich sind und insbesondere direkt auf beispielsweise die Leiterplatte montiert werden können. Insbesondere ist es dabei möglich, auch einen Klemmkörper in das Gehäuse einzuschieben, dessen elektrischer Kontakt als SMD (Surface Mounted Device)-Fläche ausgebildet ist. Erfindungsgemäß wird das isolierende Gehäuse über einen Rastmechanismus an dem Klemmkörper befestigt. Das isolierende Gehäuse wird somit auf den Klemmkörper aufgerastet, was eine besonders einfache und kostengünstige Montage ermöglicht. Es ist weder ein weiterer Montageschritt zum Schließen des isolierenden Gehäuses mit weiteren Elementen noch ein sonstiges Befestigen des Gehäuses an dem Klemmkörper von Nöten. Insbesondere kann die Anschlussklemme besonders einfach aufgebaut werden und muss lediglich einen Klemmkörper mit der entsprechenden Klemmschraube aufweisen, ohne dass zusätzliche Elemente zur Befestigung des Klemmkörpers in dem Gehäuse von Nöten sind.According to the invention, the housing is integrally formed, has a one-sided insertion opening for the clamping body, which is located in the bottom surface of the housing, and is fastened via a latching mechanism on the clamping body. Due to the one-piece design of the housing manufacturing costs are initially saved. Through the one-sided insertion opening of the clamping body can be inserted into the insulating housing. In this case, the insertion opening is arranged in the bottom surface of the housing, so that the electrical contacts of the clamping body are directly accessible and in particular can be mounted directly on, for example, the circuit board. In particular, it is possible to insert a clamping body in the housing, the electrical contact is designed as an SMD (Surface Mounted Device) surface. According to the invention, the insulating housing is fastened to the clamp body via a latching mechanism. The insulating housing is thus snapped onto the clamping body, which allows a particularly simple and cost-effective installation. There is no need for a further assembly step for closing the insulating housing with further elements or any other fastening of the housing to the clamping body. In particular, the connection terminal can be constructed particularly simply and only has to have a clamping body with the corresponding clamping screw, without the need for additional elements for fastening the clamping body in the housing.

Erfindungsgemäß weist der Rastmechanismus wenigstens einen an dem Gehäuse ausgebildeten Rasthaken auf, so dass das Gehäuse nach Aufschieben auf den Klemmkörper mit dem Rasthaken an einer entsprechenden Stelle des Klemmkörpers, vorzugsweise in einer an dem Klemmkörper ausgebildete Rastausnehmung, eingreifen kann.According to the invention, the latching mechanism has at least one latching hook formed on the housing, so that the housing can engage with the latching hook at a corresponding point of the clamping body, preferably in a latching recess formed on the clamping body, after being pushed onto the clamping body.

Damit das Gehäuse einfacher auf den Klemmkörper aufgeschoben werden kann, sind vorzugsweise in wenigstens einer an die Bodenfläche des Gehäuses angrenzenden Seitenfläche des Gehäuses ausgehend von der Bodenfläche wenigstens ein Schlitz, vorzugsweise zwei Schlitze angeordnet. Dadurch wird das Gehäuse elastischer, denn entlang des Schlitzes kann sich das Gehäuse geringfügig aufweiten, so dass ein Einschieben des Klemmkörpers in das Gehäuse, beispielsweise auch bei Überwindung der Rastmechanismen, möglich wird.So that the housing can be pushed onto the clamping body more easily, at least one slot, preferably two slots, are preferably arranged in at least one side surface of the housing adjoining the bottom surface of the housing starting from the bottom surface. As a result, the housing is elastic, because along the slot, the housing can widen slightly, so that insertion of the clamping body in the housing, for example, when overcoming the locking mechanisms, is possible.

Vorzugsweise weist die Klemmkörperaufnahme eine Ausnehmung für die Klemmschraube auf, in welcher Rippen angeordnet sind, die zumindest teilweise an der Klemmschraube anliegen. Diese Rippen verhindern, dass sich die Schraube bei Vibrationen, beispielsweise beim Transport der Anschlussklemme oder beim Einbau der Anschlussklemme in entsprechend vibrierende Vorrichtungen, dreht.Preferably, the clamping body receiving a recess for the clamping screw, in which ribs are arranged, which rest at least partially on the clamping screw. These ribs prevent the screw from rotating during vibration, for example when transporting the terminal or when installing the terminal in corresponding vibrating devices.

Vorzugsweise ist in der der Bodenfläche des Gehäuses gegenüberliegenden Oberseite eine Öffnung angeordnet, durch welche die Klemmschraube zugänglich ist. Dadurch wird es möglich, das isolierende Gehäuse bereits bei der Montage auf den Klemmkörper aufzuschieben und gegebenenfalls die Anschlussklemme bereits auf der Leiterplatte zu montieren, jedoch auch nachträglich noch entsprechende elektrische Leiter an die Anschlussklemme anzuschließen.Preferably, in the bottom surface of the housing opposite the upper side an opening is arranged, through which the clamping screw is accessible. This makes it possible to postpone the insulating housing already during assembly on the clamp body and, where appropriate, to mount the terminal already on the circuit board, but also subsequently connect corresponding electrical conductor to the terminal.

Die Öffnung in der Oberseite des Gehäuses kann derart ausgebildet sein, dass auch nachträglich die Klemmschraube noch durch diese Öffnung in den Klemmkörper eingesetzt werden kann. Vorzugsweise ist der Durchmesser der Öffnung jedoch kleiner als der Durchmesser der Klemmschraube, so dass dadurch ein Verlierschutz für die Klemmschraube gegeben ist.The opening in the top of the housing may be formed such that even later, the clamping screw can still be used through this opening in the clamp body. Preferably, however, the diameter of the opening is smaller than the diameter of the clamping screw, thereby giving a loss protection for the clamping screw.

Bei einer besonders bevorzugten Ausführungsform der Erfindung ist der elektrische Kontakt des Klemmkörpers als Kontaktpin, insbesondere als Lötpin, oder als SMD-Fläche ausgebildet. Durch das nach unten offene Gehäuse der Anschlussklemme ist die SMD-Fläche direkt zugänglich und kann ohne weiteres direkt auf die Leiterplatte aufgesetzt werden. Auch bei Verwendung von Kontaktpins bietet das nach unten offene Gehäuse den Vorteil, dass keine entsprechenden Öffnungen in die Bodenfläche eingearbeitet werden müssen, durch welche die Kontaktpins aus der Klemmkörperaufnahme durch das Gehäuse nach außen geführt werden können. Insbesondere erhöhen derartige Öffnungen den Kostenaufwand bei der Herstellung und erschweren die Montage der Anschlussklemme.In a particularly preferred embodiment of the invention, the electrical contact of the clamping body is designed as a contact pin, in particular as a solder pin, or as an SMD surface. Due to the downwardly open housing of the terminal, the SMD surface is directly accessible and can be easily placed directly on the PCB. Even when using contact pins, the downwardly open housing has the advantage that no corresponding openings must be incorporated into the bottom surface through which the contact pins can be guided out of the terminal body receiving through the housing to the outside. In particular, such openings increase the cost of manufacturing and complicate the installation of the terminal.

Vorzugsweise ist die der Bodenfläche des Gehäuses gegenüberliegende Oberseite des Gehäuses als Anlagefläche für ein Bestückungsautomaten geeignet, vorzugsweise im Wesentlichen eben ausgebildet, so dass beispielsweise ein Sauggreifer an der Oberfläche angreifen kann, um die elektrischen Anschlussklemmen automatisiert verarbeiten zu können.Preferably, the bottom surface of the housing opposite the top of the housing is suitable as a contact surface for a placement machine, preferably substantially flat, so that, for example, a suction pads can attack on the surface in order to process the electrical terminals automated.

Die Erfindung wird anhand der nachfolgenden Figuren ausführlich erläutert. Es zeigt

Fig. 1
eine perspektivische Ansicht eines ersten Ausführungsbeispiels der Erfindung,
Fig. 2
einen Längsschnitt durch das Ausführungsbeispiel gemäß Figur 1,
Fig. 3
eine perspektivische Ansicht eines zweiten Ausführungsbeispiels der Erfindung,
Fig. 4
eine perspektivische Ansicht eines dritten Ausführungsbeispiels der Erfindung,
Fig. 5
eine weitere perspektivische Ansicht des Ausführungsbeispiels gemäß Figur 4 und
Fig. 6
einen Längsschnitt durch das Ausführungsbeispiel gemäß Figur 4.
The invention will be explained in detail with reference to the following figures. It shows
Fig. 1
a perspective view of a first embodiment of the invention,
Fig. 2
a longitudinal section through the embodiment according to FIG. 1 .
Fig. 3
a perspective view of a second embodiment of the invention,
Fig. 4
a perspective view of a third embodiment of the invention,
Fig. 5
a further perspective view of the embodiment according to FIG. 4 and
Fig. 6
a longitudinal section through the embodiment according to FIG. 4 ,

Figur 1 zeigt eine perspektivische Darstellung, Figur 2 einen Längsschnitt durch ein erstes Ausführungsbeispiel einer Anschlussklemme 10. Die Anschlussklemme 10 weist ein im Wesentlichen quaderförmiges Gehäuse 20 mit einer Bodenfläche 20a, einer Oberseite 20b, einer Vorderseite 20c und einer Rückseite 20d auf. Das Gehäuse 20 ist im Wesentlichen hohl und weist eine Klemmkörperaufnahme 22 zur Aufnahme eines Klemmkörpers 30 auf. Die Bodenfläche 20a ist im Wesentlichen offen ausgebildet und bildet somit eine Einschuböffnung 24 für den Klemmkörper 30. In der Vorderseite 20c des Gehäuses 20 ist eine Einführöffnung 21 angeordnet, durch welche ein elektrischer Leiter in das Gehäuse 20 eingeführt werden kann. FIG. 1 shows a perspective view, FIG. 2 a longitudinal section through a first embodiment of a terminal 10. The terminal 10 has a substantially cuboid housing 20 having a bottom surface 20a, a top 20b, a front 20c and a back 20d. The housing 20 is substantially hollow and has a clamping body receptacle 22 for receiving a clamping body 30. The bottom surface 20a is substantially open and thus forms an insertion opening 24 for the clamping body 30. In the front side 20c of the housing 20, an insertion opening 21 is arranged, through which an electrical conductor can be inserted into the housing 20.

Der Klemmkörper 30 ist aus einem elektrisch leitenden Material gefertigt und weist einen Anschlussraum 31 auf, welcher sich im in das Gehäuse 20 eingesetzten Zustand des Klemmkörpers 30 an die Einführöffnung 21 anschließt, so dass ein durch die Einführöffnung 21 eingeschobener elektrischer Leiter in dem Anschlussraum 31 des Klemmkörpers 30 zu liegen kommt. Der Klemmkörper 30 weist eine Gewindebohrung 32 auf, in welcher eine Klemmschraube 40 eingesetzt ist. Mit Hilfe der Klemmschraube 40 kann ein in den Anschlussraum 31 des Klemmkörpers 30 eingeführter elektrischer Leiter im Anschlussraum 31 festgeklemmt werden. Die Gewindebohrung 32 ist dabei derart in dem Klemmkörper 30 angeordnet, dass die Klemmschraube 40, wenn sie in die Gewindebohrung 32 eingedreht und wenn der Klemmkörper 30 in die Klemmkörperaufnahme 22 des Gehäuses 20 eingesetzt ist, in Richtung auf die Oberseite 20b des Gehäuses 20 weist. Die Klemmkörperaufnahme 22 weist dabei eine Ausnehmung 23 auf, in welcher die Klemmschraube 40 insbesondere mit ihrem Schraubenkopf 41 zu liegen kommt. Die Ausnehmung 23 kann in Richtung auf die Oberseite 20b des Gehäuses 20 geschlossen sein. Vorzugsweise ist sie jedoch über eine Öffnung 25, welche in der Oberseite 20b des Gehäuses 20 angeordnet ist, zugänglich, so dass durch die Öffnung 25 die Klemmschraube 40 betätigt werden kann. Die Öffnung 25 kann dabei im Wesentlichen so groß sein, wie der größte Durchmesser der Klemmschraube 40, d.h. im Wesentlichen der Durchmesser des Schraubenkopfes 41 der Klemmschraube 40, so dass die Klemmschraube 40 auch durch die Oberseite 20b des Gehäuses 20 vollständig entfernt oder neu eingesetzt werden kann. In einer alternativen Ausführungsform ist der Durchmesser der Öffnung 25 kleiner als der größte Durchmesser der Klemmschraube 40, so dass dadurch ein Verlierschutz für die Klemmschraube 40 gegeben ist.The clamping body 30 is made of an electrically conductive material and has a connection space 31 which adjoins the insertion opening 21 in the inserted into the housing 20 state of the clamping body 30, so that an inserted through the insertion opening 21 electrical conductor in the connection space 31 of Clamping body 30 comes to rest. The clamping body 30 has a threaded bore 32 in which a clamping screw 40 is inserted. With the aid of the clamping screw 40, an electrical conductor inserted into the connection space 31 of the clamping body 30 can be clamped in the connection space 31. The threaded bore 32 is such in the Clamping body 30 is arranged such that the clamping screw 40, when it is screwed into the threaded bore 32 and when the clamping body 30 is inserted into the clamping body receptacle 22 of the housing 20, in the direction of the upper side 20 b of the housing 20. The clamping body receptacle 22 in this case has a recess 23 in which the clamping screw 40 comes to rest, in particular with its screw head 41. The recess 23 may be closed in the direction of the upper side 20b of the housing 20. Preferably, however, it is accessible via an opening 25, which is arranged in the upper side 20b of the housing 20, so that the clamping screw 40 can be actuated through the opening 25. The opening 25 can be substantially as large as the largest diameter of the clamping screw 40, ie substantially the diameter of the screw head 41 of the clamping screw 40, so that the clamping screw 40 are completely removed or reinserted by the top 20 b of the housing 20 can. In an alternative embodiment, the diameter of the opening 25 is smaller than the largest diameter of the clamping screw 40, so that thereby a loss protection for the clamping screw 40 is given.

Die Ausnehmung 23 kann Rippen, insbesondere Längsrippen aufweisen, die zumindest teilweise an der Klemmschraube 40, insbesondere an dem Schraubenkopf 41 anliegen und ein ungewolltes Drehen der Klemmschraube 40, beispielsweise bei Vibrationen, verhindern.The recess 23 may have ribs, in particular longitudinal ribs, which rest at least partially on the clamping screw 40, in particular on the screw head 41 and prevent unintentional rotation of the clamping screw 40, for example, during vibrations.

Die Oberfläche 20b ist im Wesentlichen eben ausgebildet, wobei in ihr höchstens die Öffnung 25 liegt. Damit ist die Oberfläche 20b als Anlagefläche für einen Bestückungsautomaten geeignet, welcher beispielsweise mit einem Sauggreifer an der Oberfläche 20b angreifen kann.The surface 20b is substantially planar, with at most the opening 25 in it. Thus, the surface 20b is suitable as a contact surface for a placement machine, which can attack, for example, with a suction pads on the surface 20b.

Der Klemmkörper 30 weist als elektrischen Kontakt zwei Kontaktpins, insbesondere zwei Lötpins 36 auf, die an der Seite des Klemmkörpers 30 angeordnet sind, welche der Gewindebohrung 32 gegenüberliegt, und welche somit im Wesentlichen in der Bodenfläche 20a des Gehäuses 20 zu liegen kommen. Da die Bodenfläche 20a nach unten jedoch durch die Einschuböffnung 24 geöffnet ist, ragen die Lötpins 36 durch die Bodenfläche 20a aus dem Gehäuse 20 hervor und können somit direkt auf einer Leiterplatte befestigt werden. Da die Lötpin 36 elektrisch leitend mit dem Klemmkörper 30 verbunden sind, kann auf diese Weise der elektrische Kontakt zwischen einem in den Anschlussraum 31 des Klemmkörpers 30 eingeschobenen elektrischen Leiter und einer entsprechenden Leiterbahn der Leiterplatte hergestellt werden.The clamping body 30 has as electrical contact two contact pins, in particular two soldering pins 36, which are arranged on the side of the clamping body 30, which faces the threaded bore 32, and which thus come to lie substantially in the bottom surface 20a of the housing 20. However, since the bottom surface 20a is opened downwardly through the insertion opening 24, the soldering pins 36 protrude from the housing 20 through the bottom surface 20a and thus can be directly mounted on a circuit board. Since the solder pins 36 are electrically conductively connected to the clamping body 30, in this way the electrical contact between an inserted into the connection space 31 of the clamping body 30 electrical conductor and a corresponding conductor track of the circuit board can be produced.

Damit der Klemmkörper 30 nicht aus dem Gehäuse 20 herausfallen kann, wird das Gehäuse 20 auf den Klemmkörper 30 aufgerastet. Dazu sind an dem Gehäuse 20 im Bereich der Bodenfläche 20a Rasthaken 26 angeordnet, die nach Aufschieben des Gehäuses 20 auf den Klemmkörper 30 unter den Klemmkörper 30 greifen. Beispielsweise können dazu auch Ausnehmungen in dem Klemmkörper 30 angeordnet werden, in welche die Rasthaken 26 eingreifen. Auf diese Art und Weise wird die Montage der Anschlussklemme 10 deutlich vereinfacht, da das isolierende Gehäuse 20 lediglich über den Klemmkörper 30 geschoben werden muss und anschließend mit diesem verrastet, so dass keine weiteren Montageschritte, insbesondere keine Montage eines isolierenden Bodens von Nöten sind.So that the clamping body 30 can not fall out of the housing 20, the housing 20 is snapped onto the clamping body 30. For this purpose, locking hooks 26 are arranged on the housing 20 in the region of the bottom surface 20a, which engage after pushing the housing 20 onto the clamping body 30 under the clamping body 30. For example, recesses can also be arranged in the clamping body 30, in which the latching hooks 26 engage. In this way, the mounting of the terminal 10 is significantly simplified, since the insulating housing 20 must be pushed only over the clamping body 30 and then locked with this, so that no further assembly steps, in particular no mounting of an insulating floor are needed.

Figur 3 zeigt eine perspektivische Darstellung eines zweiten Ausführungsbeispiels der Anschlussklemme 10, wobei gleiche Teile mit den gleichen Bezugsziffern wie bei dem Ausführungsbeispiel gemäß den Figuren 1 und 2 bezeichnet sind. Die in Figur 3 dargestellte Anschlussklemme 10 unterscheidet sich von dem in den Figuren 1 und 2 dargestellten Ausführungsbeispiel der Anschlussklemme 10 dadurch, dass die vorliegende Anschlussklemme 10 zusätzlich einen Drahtschutz 50 aufweist, welcher von der der Oberseite 20b des Gehäuses 20 zugewandten Seite des Klemmkörpers 30 über die der Vorderseite 20c des Gehäuses 20 zugewandten Vorderseite des Klemmkörpers 30 in den Anschlussraum 31 des Klemmkörpers 30 geführt ist und soweit in den Anschlussraum 31 hineinragt, dass der Drahtschutz 50 unterhalb des unteren Endes der Klemmschraube 40 zu liegen kommt. Der Drahtschutz 50 liegt somit zwischen einem in den Anschlussraum 31 eingeführten elektrischen Leiter und der Klemmschraube 40, so dass er eine Beschädigung des elektrischen Leiters durch die Klemmschraube 40 verhindert. FIG. 3 shows a perspective view of a second embodiment of the terminal 10, wherein like parts with the same reference numerals as in the embodiment according to the FIGS. 1 and 2 are designated. The in FIG 3 illustrated terminal 10 is different from that in the FIGS. 1 and 2 illustrated embodiment of the terminal 10, characterized in that the present terminal 10 additionally comprises a wire guard 50, which from the top side 20b of the housing 20 facing side of the clamp body 30 on the front side 20c of the housing 20 facing front of the clamp body 30 in the terminal space 31 of Clamping body 30 is guided and extends so far into the connection space 31 that the wire guard 50 comes to rest below the lower end of the clamping screw 40. The wire guard 50 thus lies between an electrical conductor inserted into the connection space 31 and the clamping screw 40, so that it prevents damage to the electrical conductor by the clamping screw 40.

Die Figuren 4 und 5 zeigen zwei perspektivische Ansichten, Figur 6 einen Längsschnitt durch ein drittes Ausführungsbeispiel der Anschlussklemme 10. Gleiche Teile sind wiederum mit gleiche Bezugsziffern wie bei dem ersten Ausführungsbeispiel gemäß der Figuren 1 und 2 bezeichnet.The FIGS. 4 and 5 show two perspective views, Figure 6 is a longitudinal section through a third embodiment of the terminal 10. The same parts are again with the same reference numerals as in the first embodiment according to the FIGS. 1 and 2 designated.

Die vorliegende Anschlussklemme 10 unterscheidet sich von dem ersten Ausführungsbeispiel der Anschlussklemme 10 im Wesentlichen dadurch, dass der elektrische Kontakt des Klemmkörpers 30 nicht durch die Lötpin 36, sondern durch eine SMD-Fläche 37 gebildet ist. Diese liegt im Wesentlichen in der Bodenfläche 20a des Gehäuses 20. Die Anschlussklemme 10 kann somit besonders einfach auf einer entsprechenden Leiterplatte montiert werden, wobei jedoch eine zuverlässige Isolierung der Anschlussklemme 10 gegeben ist.The present terminal 10 differs from the first embodiment of the terminal 10 essentially in that the electrical contact of the clamp body 30 is not formed by the Lötpin 36, but by an SMD surface 37. This is essentially in the bottom surface 20a of the housing 20. The terminal 10 can thus be particularly easily mounted on a corresponding circuit board, but with a reliable insulation of the terminal 10 is given.

Wie Figur 5 zu entnehmen ist, weist das Gehäuse 20 in der Rückseite 20d ausgehend von der Bodenfläche 20a zwei Schlitze 27 auf. Die Schlitze 27 ermöglichen ein einfacheres Einschieben des Klemmkörpers 30 in das Gehäuse 20, da sich das Gehäuse 20 entlang der Schlitze 27 geringfügig verformen, insbesondere aufweiten kann, so dass der Klemmkörper 30 einfach in das Gehäuse 20, insbesondere zur Überwindung des aus den Rasthaken 26 gebildeten Rastmechanismusses eingeschoben werden kann.As FIG. 5 can be seen, the housing 20 in the back 20 d, starting from the bottom surface 20 a two slots 27 on. The slots 27 allow for easier insertion of the clamping body 30 in the housing 20, since the housing 20 along the slots 27 slightly deform, in particular can widen, so that the clamping body 30 simply in the housing 20, in particular to overcome the out of the latching hooks 26th formed Rastmechanismusses can be inserted.

Selbstverständlich kann der Drahtschutz 50 gemäß dem zweiten Ausführungsbeispiel gemäß Figur 3 auch bei dem dritten Ausführungsbeispiel verwendet werden. Gleichfalls kann das Gehäuse 20 gemäß dem ersten Ausführungsbeispiel, welches in den Figuren 1 und 2 dargestellt ist, ebenfalls Schlitze in der Rückseite 20d aufweisen. Weiterhin kann auch jedes Gehäuse 20 in der Ausnehmung 23 zusätzliche Rippen aufweisen.Of course, the wire protection 50 according to the second embodiment according to FIG. 3 also be used in the third embodiment. Likewise, the housing 20 according to the first embodiment, which in the FIGS. 1 and 2 also have slots in the back 20d. Furthermore, each housing 20 in the recess 23 may have additional ribs.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Anschlussklemmeterminal
2020
Gehäusecasing
20a20a
Bodenflächefloor area
20b20b
Oberseitetop
20c20c
Vorderseitefront
20d20d
Rückseiteback
2121
Einführöffnunginsertion
2222
KlemmkörperaufnahmeTerminal Length
2323
Ausnehmungrecess
2424
Einschuböffnunginsertion opening
2525
Öffnungopening
2626
Rasthakenlatch hook
2727
Schlitzslot
3030
Klemmkörperclamping bodies
3131
Anschlussraumconnection space
3232
Gewindebohrungthreaded hole
3636
Lötpinsolder pin
3737
SMD-FlächeSMD surface
4040
Klemmschraubeclamping screw
4141
Schraubenkopfscrew head
5050
Drahtschutzwire protection

Claims (7)

  1. Electrical connecting terminal (10) having an insulating, one-piece housing (20) and having a clamp body (30) which can be inserted therein, wherein the housing (20) has a bottom face (20a), a top (20b), a front side (20c) and a rear side (20d) and also a clamp body receptacle (22), wherein an insertion opening (21) for an electrical conductor is arranged in the front side (20c), wherein the bottom face (20d) is designed as a one-sided push-in opening (24) for the clamp body (30), wherein the clamp body can be inserted into the clamp body receptacle (22) and has a connecting space (31) for the electrical conductor, which connecting space adjoins the insertion opening (21) in the state where the clamp body (30) is inserted in the housing (20), wherein the clamp body (30) has a threaded bore (32) in which a clamping screw (40) is inserted for clamping an electrical conductor that is guided into the connecting space (31), wherein the clamp body receptacle (22) has a recess (23) in which the clamping screw (40) comes to lie with its screw head (41), wherein the clamp body (30) has at least one electrical contact for establishing an electrically conductive connection between an electrical conductor pushed into the connecting space (31) of the clamp body (30) and a printed circuit board, wherein the electrical contact is accessible through the bottom face (20a) of the housing (20), wherein at least one latching hook (26) is arranged on the housing (20) in the region of the bottom face (20a), via which latching hook the housing (20) can be fastened to the clamp body (30) after being pushed onto the clamp body (30).
  2. Connecting terminal according to claim 1, characterized in that the latching hook (26) engages in a latching recess formed on the clamp body (30).
  3. Connecting terminal according to any of the preceding claims, characterized in that, starting from the bottom face (20a), at least one, preferably two slots (27) are arranged in a rear side (20d) of the housing (20) adjoining the bottom face (20a) of the housing (20).
  4. Connecting terminal according to any of the preceding claims, characterized in that the clamp body receptacle (22) has a recess (23) for the clamping screw (40), in which ribs which bear at least partially against the clamping screw (40) are arranged.
  5. Connecting terminal according to any of the preceding claims, characterized in that an opening (25), through which the clamping screw (40) is accessible, is arranged in the top (20b) located opposite the bottom face (20a) of the housing (20).
  6. Connecting terminal according to claim 5, characterized in that the diameter of the opening (25) is smaller than the diameter of the clamping screw (40).
  7. Connecting terminal according to any of the preceding claims, characterized in that the electrical contact of the clamp body (30) is designed as a contact pin, in particular as a solder pin (36), or as an SMD surface (37).
EP07024066.8A 2007-01-24 2007-12-12 Electrical terminal Active EP1950836B1 (en)

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EP1950836A3 EP1950836A3 (en) 2010-02-03
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Also Published As

Publication number Publication date
EP1950836A2 (en) 2008-07-30
EP1950836A3 (en) 2010-02-03
DE102007004545B4 (en) 2009-01-08
DE102007004545A1 (en) 2008-07-31
US7597594B2 (en) 2009-10-06
US20080176457A1 (en) 2008-07-24

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