EP3446367B1 - Plug contact - Google Patents

Plug contact Download PDF

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Publication number
EP3446367B1
EP3446367B1 EP17718102.1A EP17718102A EP3446367B1 EP 3446367 B1 EP3446367 B1 EP 3446367B1 EP 17718102 A EP17718102 A EP 17718102A EP 3446367 B1 EP3446367 B1 EP 3446367B1
Authority
EP
European Patent Office
Prior art keywords
contact
plug
legs
conductor
connection
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
EP17718102.1A
Other languages
German (de)
French (fr)
Other versions
EP3446367A1 (en
Inventor
Arndt Schafmeister
Ralf Geske
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of EP3446367A1 publication Critical patent/EP3446367A1/en
Application granted granted Critical
Publication of EP3446367B1 publication Critical patent/EP3446367B1/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
    • 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
    • H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
    • 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
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/75—Coupling devices for rigid printing circuits or like structures connecting to cables except for flat or ribbon cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • H01R13/05—Resilient pins or blades
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/48365—Spring-activating arrangements mounted on or integrally formed with the spring housing with integral release means

Definitions

  • the invention relates to a plug-in contact for electrically contacting a circuit board by inserting the plug-in contact into a contact hole in the circuit board, with two contact legs that are resilient relative to one another, a connection area and a connection area, the connection area connecting the two contact legs to one another and to the connection area, and the plug-in contact is formed from a metallic flat material.
  • the invention also relates to an electrical connection terminal with a housing, with a conductor connection element and with a busbar piece, wherein a conductor to be connected can be electrically connected to the busbar piece by means of the conductor connection element and a conductor insertion opening is formed in the housing for inserting an electrical conductor to be connected.
  • Plug contacts for producing electrical connections between conductors, various electrical or electronic components and busbars are known in various embodiments and for various areas of application.
  • the plug contacts are inserted into corresponding receiving contacts or socket elements, whereby the receiving contacts can be openings in busbars, for example.
  • the plug contacts themselves can be connected to electrical components or provided for connection to electrical conductors, for which purpose the connection area of the plug contacts is then designed accordingly.
  • connection terminals have also been known in a variety of design variants for decades.
  • the connection terminals can, for example, be designed as a so-called printed circuit board for connecting an electrical conductor or several conductors to a circuit board, for which purpose the connection terminals have corresponding contact pins which are pressed or soldered into corresponding holes in the circuit board.
  • a screw terminal can be provided as a conductor connection element, through which a conductor to be connected can be connected to the busbar piece in an electrically conductive manner.
  • the conductor connection element can also be designed as a crimp connection to which the stripped end of a conductor to be connected can be attached, the crimp connection then being formed at one end of the busbar piece and the contact pin at the other end of the busbar piece.
  • a cutting connection in which an insulated end of a conductor is pressed into the cutting edges of the cutting connection, is also possible as a conductor connection element.
  • Clamping springs can also be used as conductor connection elements, with both loop-shaped clamping springs, so-called tension spring clamps, as well as U-shaped or V-shaped clamping springs being used.
  • Rigid conductors or conductors with a ferrule can be inserted directly into U-shaped or V-shaped clamping springs, ie without the clamping point having to be opened beforehand with a tool.
  • U-shaped or V-shaped clamping springs With the known U-shaped or V-shaped clamping springs, the conductor to be connected is pressed against the busbar piece by the clamping leg of the clamping spring, whereby the electrical connection between the conductor and the busbar piece is established.
  • the clamping point between the clamping leg and the busbar piece must be opened, for which purpose an actuation opening for inserting a tool, for example the tip of a screwdriver, is formed in the housing.
  • the actuation opening also serves to open the terminal point in order to be able to pull a connected conductor out of the terminal again.
  • a plug contact designed for use in circuit boards has been known for some time, which is designed in the manner of a spring fork and has two flat contact legs that are resilient relative to one another and which are connected to one another via a common connection area.
  • the plug contact is punched out of a metallic flat material and bent, with the narrowest possible area between the contact legs being punched out to produce the two contact legs.
  • the contact legs When plugged in, the contact legs each press with their outer punched edges against the inner wall of the contact hole into which the plug contact is inserted.
  • the connection area opposite the contact legs is designed as a crimp connection, so that one conductor can be connected to a plug contact.
  • the two contact legs In order for the two contact legs to be manufactured safely using stamping technology, their width must approximately correspond to their thickness, i.e. H. the material thickness of the flat material from which the plug contact is punched out. Since the width of the area punched out between the two contact legs also corresponds approximately to the material thickness of the flat material, it results that the width of the individual contact legs is only just under 1/3 of the total width of the plug-in contact.
  • the total width of the plug contact i.e. H.
  • the width of the two contact legs and the width of the area punched out between the two contact legs is determined by the diameter of the contact hole in the circuit board into which the plug contact is to be inserted. With small hole diameters, this means that the contact legs of the plug contact have to be very narrow and thin. This is initially difficult to achieve in terms of stamping technology and also means that the normal contact force that can be applied by the contact legs is only relatively low.
  • a plug-in connection does not produce such an intermetallic connection.
  • the contact partners ie the plug contact and the contact hole in the circuit board, press against each other with the normal contact force. This must be sufficiently large to ensure good and permanent electrical contact between the contact partners. Are the contact legs too narrow? or too thin, the contact normal force may not be large enough to ensure long-term good electrical contact.
  • the US 4,384,757 discloses a plug contact with two resilient contact legs for insertion into a contact hole on a circuit board.
  • the plug-in contact is bent from a flat material, with a connection area forming a U-shaped contour together with the resilient contact legs.
  • the two contact legs are bent in the longitudinal direction.
  • the FR 2 813 997 shows a plug contact, according to the preamble of claim 1, in which the distance between the two contact legs in the contact area is smaller than in the connection area.
  • the contact legs of this plug contact are curved in cross section in the contacting area.
  • connection terminal with several plug contacts described above is from the DE 10 2011 011 017 A1 known.
  • the individual plug contacts are arranged next to each other in several rows in chambers of the connection housing in such a way that the plug contacts extend perpendicular to the plane of the circuit board.
  • the connection areas of the individual plug contacts are designed as crimp connections. This allows several conductors to be connected to a circuit board in which the individual contact holes are at a small distance from one another. However, subsequent connection or disconnection of individual conductors is not possible with the known connection terminal.
  • a fork-shaped plug contact for contacting a circuit board is also available DE 202 18 295 U1 known.
  • the contact legs press with their outer punched edges against the inner wall of the contact hole, with the two contact legs each having two outer edges, which dig into the metallization of the hole wall when the plug-in contact is pressed into the contact hole of the circuit board.
  • Cold welding should preferably occur between the metallization of the bore wall and the contact leg in order to ensure good electrical contact.
  • a subsequent separation of the connection is then not possible or only possible with difficulty.
  • the present invention is based on the object of providing a plug-in contact described above, which ensures secure contacting of the contact hole even when the material thickness of the flat material is small so that the connector ensures good and permanent electrical contact between the contact partners.
  • the plug contact should also be able to be pulled out of the contact hole again.
  • an electrical connection terminal is to be specified with which an electrical conductor can be easily connected to a circuit board.
  • the two contact legs each have a first section and a second section adjoining it in the insertion direction of the plug-in contact.
  • the two contact legs are bent out of the plane of the connection area in such a way that the connection area and the first areas of the two contact legs adjacent to the connection area together form a U-shaped contour.
  • the contacting areas that contact the contact hole when the plug-in contact is inserted are formed on the outer sides of the second sections of the two contact legs facing away from one another, with each contact leg having a contacting area.
  • the contact legs and the connection area do not extend in a common plane, but the contact legs are bent relative to the connection area. This results in the contact legs in the inserted state not pressing against the inner wall of the contact hole with their punched edges, but with their outer sides of the second sections facing away from one another. This ensures that the contact area of the contact legs is no longer directly dependent on the material thickness of the metallic flat material from which the plug contact is made.
  • the design of the contact legs in particular their geometry and the shape of the contacting areas, there is more scope for design, so that the plug contact and in particular the contact legs can be better adapted to the respective dimensions of the contact hole.
  • the contacting areas of the contact legs are not formed on their punched edges but on the rolled side of the metallic flat material, the Contacting areas can be provided with a coating in a simple manner, for example gold-plated. Since the contacting areas are not formed on the punched edges, the coating can already be applied to the metallic flat material from which the plug contacts are made, ie punched out and bent. This eliminates the need for subsequent and complex coating of the individual plug contacts that have already been punched out and possibly bent.
  • the second sections of the two contact legs each have an outer contour with a rounded cross-section, at least in their contacting area.
  • the edges of the contact legs are therefore machined, particularly in the area in which the contact legs contact the contact hole when inserted, so that they do not have any sharp edges that dig into the metallization of the bore wall when the plug contact is inserted into the contact hole.
  • the outer contour of the contact legs can have a radius that is smaller than the radius of the contact hole. This makes it possible to insert and remove the plug contact several times without causing major damage to the inner wall of the contact hole in the circuit board.
  • the contacting areas of the two contact legs are designed to be spherical. The spherical shape of the contacting areas can be easily created using a die into which the corresponding areas of the second sections of the contact legs are pressed before the contact legs are bent out of the plane of the connection area.
  • the geometry of the contact legs can be more easily adapted to the respective requirements, in particular to the dimensions of the contact hole .
  • the two contact legs are arranged mirror-symmetrically to one another, with a distance from one another over their entire longitudinal extent.
  • the contact legs are bent in such a way that the distance between the two contact legs from one another is the smallest in the area of their free ends.
  • connection area is also the same for plug-in contacts that are designed to be inserted into contact holes are provided with small diameters, can have a width that ensures sufficient stability of the plug contact.
  • the two contact legs also each have a smaller width in their contacting area than in their first section. This also creates the possibility of providing a plug-in contact that can be inserted into contact holes with a small diameter , without the overall width of the contact legs having to be chosen correspondingly small. This makes the production of the plug-in contact easier because the contact legs do not have to be too narrow in the section in which they are bent away from the connection area. In addition, the normal contact force that can be applied by the contact legs is not too low, so that long-lasting, good electrical contact can be guaranteed even with low material thickness.
  • the electrical connection terminal has a plug contact according to the invention, which is at least partially arranged in the housing of the connection terminal in such a way that the busbar piece is formed by the connection area or a section of the connection area of the plug contact, the contact legs of the plug contact having their second sections or their contacting areas protrude from the bottom of the housing.
  • the underside of the housing is the side that faces the circuit board when the connection terminal is placed on the circuit board.
  • connection terminals can be used in connection terminals with different connection techniques.
  • a screw terminal or an insulation displacement terminal can be provided as a conductor connection element, through which a conductor to be connected can be electrically connected to the busbar piece.
  • the conductor connection element can also be designed as a crimp connection to which the stripped end of a conductor to be connected can be attached.
  • a clamping spring is provided as the conductor connection element, which has a clamping leg and a contact leg, the clamping leg together with the corresponding section of the connection area of the plug contact forming a spring-loaded clamping connection for the conductor to be connected.
  • the use of a clamping spring as a conductor connection element has the additional advantage that a conductor to be connected can be connected very easily to the connection terminal and thus also to a circuit board via the spring-loaded clamp connection. If necessary, the electrical conductor can also be pulled out of the connection terminal again when the spring-loaded terminal connection is opened. The electrical connection between the conductor and the circuit board can thus be released both between the conductor and the connection area of the plug contact and between the contact legs of the plug contact and the circuit board.
  • connection area of the electrical connection terminal extends in the longitudinal direction of the contact legs
  • the conductor insertion opening is arranged on the top of the housing and an electrical conductor to be connected is inserted into the connection terminal perpendicular to the plane of the circuit board.
  • connection area of the plug contact it is also possible for the connection area of the plug contact to be bent perpendicularly - or at an angle not equal to 90° - to the longitudinal direction of the contact legs, so that the conductor insertion opening is then arranged accordingly on an end face of the housing. In both cases, the electrical conductor is pressed from the free end of the contact leg against the corresponding section of the connection area, whereby the electrical connection between the conductor and the plug contact is established.
  • connection area of the plug contact facing the clamping leg.
  • connection area increases the surface pressure between the inserted conductor and the plug contact, which leads to a lower contact resistance.
  • a plurality of adjusting elements are formed on the underside of the housing, which are inserted into corresponding recesses in the circuit board when the connection terminal is placed on the circuit board.
  • the ends of the adjusting elements are preferably conical, which makes it easier to insert the adjusting elements into the corresponding recesses in the circuit board.
  • the length of the adjusting elements is selected so that when the connection terminal is placed on the circuit board, the adjusting elements first engage with their free ends in the corresponding recesses in the circuit board before the contacting areas of the contact legs of the plug-in contact dip into the corresponding contact holes in the circuit board.
  • At least two locking elements are formed on the underside of the housing, which engage in corresponding recesses in the circuit board.
  • Appropriate locking projections or locking lugs can be used to ensure that the electrical connection terminal is securely attached to a circuit board after it has been placed on it.
  • the latching elements are preferably designed in such a way that they can be transferred from a first, non-latching state to a second, latching state and vice versa. This makes it possible to release the latching between the housing of the electrical connection terminal and the circuit board again, so that the electrical connection terminal can be lifted off the circuit board again if necessary.
  • the Fig. 1 and 2 show a preferred exemplary embodiment of a plug-in contact 1 for contacting a circuit board 2, for which purpose the plug-in contact 1 is inserted into a corresponding contact hole 3 in the circuit board 2 (cf. Fig. 6 and 7 ).
  • the plug contact 1 punched out and bent from a metallic flat material, has two contact legs 4, 5 which are resilient relative to one another, a connection area 6 and a connection area 7, the two contact legs 4, 5 being connected to one another and to the connection area 6 via the connection area 7.
  • the two contact legs 4, 5 each have a first section 4a, 5a and a second section 4b, 5b, which adjoins the first section 4a, 5a in the insertion direction E of the plug contact 1. How in particular Fig. 1 As can be seen, the two contact legs 4, 5 are bent out of the plane of the connection area 7, so that the connection area 7 and the adjoining first areas 4a, 5a of the two contact legs 4, 5 together form a U-shaped contour. The contact legs 4, 5 are bent approximately perpendicularly from the connection area 7, so that the connection area 7 forms the U-back and the two first sections 4a, 5a of the contact legs 4, 5 form the U-legs of the U-shaped contour.
  • the contacting areas 4c, 5c are formed, which contact the contact hole 3 when the plug contact 1 is inserted.
  • the contact areas 4c, 5c are spherical.
  • the radius of the outer contour of the contact areas 4c, 5c is slightly smaller than the radius of the contact hole 3, so that when the contact legs 4, 5 are inserted into the contact hole 3, the metallized inner wall of the contact hole 3 is not damaged.
  • the two contact legs 4, 5 are arranged mirror-symmetrically to one another and are at a distance from one another over their entire longitudinal extent.
  • the distance between the contact legs 4, 5 from one another is smallest in the area of their free ends 4d, 5d, while it is greatest in the area of the first sections 4a, 5a.
  • the contact legs 4, 5 are thus bent towards one another starting from the connection area 7 or from their first sections 4a, 5a, with the width of the contact legs 4, 5 also reducing in the direction of the free ends 4d, 5d.
  • the contact legs 4, 5 can be inserted into a contact hole 3, the diameter of which is smaller than the distance between the first two sections 4a, 5a of the two contact legs 4, 5 or the width of the connection area 7.
  • a plug-in contact 1 can thus be realized, which can be inserted into very small contact holes 3 and still has sufficient rigidity and stability so that the plug contact 1 is not deformed when the contact legs 4, 5 are inserted into the contact hole 3.
  • the in Fig. 3 Plug contact 1 shown enlarged differs from that in the Fig. 1 and 2 shown plug contact 1 only by a slightly different design of the connection area 6.
  • the connection area 6 is designed as a straight tongue, which, like the section 6a of the connection area 6 according to Fig. 1 and 2 serves to contact an electrical conductor.
  • Fig. 4 shows two intermediate steps in the production of the plug contact 1 according to the invention, where in Fig. 4a the plug contact 1 is shown after being punched out of a metallic flat material.
  • the metallic flat material can have a thickness of less than 0.5 mm, for example a thickness of only 0.3 - 0.4 mm.
  • the spherical shape of the contacting areas 4c, 5c was created by pressing the corresponding areas of the second sections 4b, 5b of the contact legs 4, 5 into a die.
  • two sections of the connection area 6 are bent upwards, so that the connection area 6 has a U-shaped contour with a U-back 8 and two side walls 9.
  • the two contact legs 4, 5 are bent essentially vertically upwards from the plane of the connection area 7 and the second sections 4b, 5b of the contact legs 4, 5 are bent towards one another, so that the in Fig. 1 shown shape of the plug contact 1 is achieved.
  • the 5 and 6 show a preferred embodiment of an electrical connection terminal 10 according to the invention, which has a housing 11 generally made of plastic. A plurality of conductor insertion openings 12 and a corresponding number of clamping springs 13 and plug contacts 1 are arranged in the housing 11.
  • the exemplary embodiment of the electrical connection terminal 10 shown in the figures is used to connect ten individual conductors, so that a total of ten clamping springs 13 and ten plug contacts 1 are arranged in the housing 11, with two clamping springs 13 each being arranged mirror-symmetrically opposite one another, as shown Fig. 6 is recognizable.
  • the individual clamping springs 13, of which are shown in the cross-sectional view Fig. 6 two opposite each other can be seen in the connection terminal 10, each have a clamping leg 14 and a contact leg 15.
  • Each clamping spring 13 is assigned a plug-in contact 1 in such a way that a section 6a of the connection area 6 of a plug-in contact 1 formed by a side wall 9, together with the free end of the clamping leg 14 of a clamping spring 13, forms a spring-loaded clamping connection for an electrical connection inserted through a conductor insertion opening 12 into the housing 11 leader forms. Since the connection terminal 10 is provided for connecting ten conductors, ten conductor insertion openings 12 and ten actuation openings 16 are also formed in the housing 11 for opening one spring-loaded terminal connection.
  • the two locking elements 20 can each have locking lugs that are opposite one another. With the help of a locking pin arranged between the opposite locking lugs and designed to be displaceable in the longitudinal direction of the locking element 20, an unwanted springing back of the locking lugs can be prevented when the Locking pin is in its locking position between the two locking lugs.
  • an actuation pusher 21 is displaceably arranged in each of the actuation openings 16. If the actuation pusher 21 is pressed into the actuation opening 16 of the housing 11, the actuation pusher 21 deflects the clamping leg 14 of the clamping spring 13 against its spring force, so that a connected conductor can be pulled out of the clamping point or a flexible conductor can be inserted into the clamping point.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Description

Die Erfindung betrifft einen Steckkontakt zur elektrischen Kontaktierung einer Leiterplatte mittels Einsteckens des Steckkontakts in ein Kontaktloch der Leiterplatte, mit zwei relativ zueinander federnden Kontaktschenkeln, einem Anschlussbereich und einem Verbindungsbereich, wobei der Verbindungsbereich die beiden Kontaktschenkel miteinander und mit dem Anschlussbereich verbindet, und wobei der Steckkontakt aus einem metallischen Flachmaterial ausgebildet ist.The invention relates to a plug-in contact for electrically contacting a circuit board by inserting the plug-in contact into a contact hole in the circuit board, with two contact legs that are resilient relative to one another, a connection area and a connection area, the connection area connecting the two contact legs to one another and to the connection area, and the plug-in contact is formed from a metallic flat material.

Daneben betrifft die Erfindung noch eine elektrische Anschlussklemme mit einem Gehäuse, mit einem Leiteranschlusselement und mit einem Stromschienenstück, wobei ein anzuschließender Leiter mittels des Leiteranschlusselements mit dem Stromschienenstück elektrisch leitend verbindbar ist und wobei im Gehäuse eine Leitereinführungsöffnung zum Einführen eines anzuschließenden elektrischen Leiters ausgebildet ist.In addition, the invention also relates to an electrical connection terminal with a housing, with a conductor connection element and with a busbar piece, wherein a conductor to be connected can be electrically connected to the busbar piece by means of the conductor connection element and a conductor insertion opening is formed in the housing for inserting an electrical conductor to be connected.

Steckkontakte zur Herstellung von elektrischen Verbindungen zwischen Leitern, verschiedenen elektrischen oder elektronischen Bauteilen und Stromschienen sind in verschiedenen Ausführungsformen und für verschiedene Einsatzbereiche bekannt. Die Steckkontakte werden dazu in korrespondierende Aufnahmekontakte oder Buchsenelemente eingesteckt, wobei es sich bei den Aufnahmekontakten beispielsweise um Öffnungen in Stromschienen handeln kann. Die Steckkontakte selber können mit elektrischen Bauteilen verbunden oder zur Verbindung mit elektrischen Leitern vorgesehen sein, wozu dann der Anschlussbereich der Steckkontakte entsprechend ausgebildet ist.Plug contacts for producing electrical connections between conductors, various electrical or electronic components and busbars are known in various embodiments and for various areas of application. For this purpose, the plug contacts are inserted into corresponding receiving contacts or socket elements, whereby the receiving contacts can be openings in busbars, for example. The plug contacts themselves can be connected to electrical components or provided for connection to electrical conductors, for which purpose the connection area of the plug contacts is then designed accordingly.

Für die Verbindung zwischen einer Leiterplatte und einem elektrischen Bauteil oder dem Anschluss eines Leiters an eine Leiterplatte gibt es unterschiedliche Techniken, wobei sich in der Praxis vor allem das Löten und das Einpressen etabliert haben. Beide Techniken haben sich über Jahre bewährt, da sie einen guten und dauerhaften elektrischen Kontakt zwischen den Kontaktpartnern gewährleisten. Ein Nachteil sowohl des Lötens als auch des Einpressens besteht darin, dass beide Verbindungstechniken nicht reversibel sind, so dass eine einmal hergestellte Verbindung nicht - oder nur mit erhöhtem Aufwand - wieder getrennt werden kann. Darüber hinaus sind zur Herstellung der Verbindung zusätzliche Arbeitsschritte und/oder spezielle Werkzeuge erforderlich. Hier bieten Steckverbindungen, die in anderen Anwendungsbereichen seit Jahrzehnten verwendet werden, eine Alternative, da die Verbindung einfach von Hand hergestellt und darüber hinaus auch wieder bei Bedarf getrennt werden kann, also reversibel ist.There are different techniques for connecting a circuit board and an electrical component or connecting a conductor to a circuit board, with soldering and pressing in being the most established in practice. Both techniques have proven themselves over the years as they ensure good and long-lasting electrical contact between the contact partners. A disadvantage of both soldering and pressing is that both connection techniques are not reversible, so that once a connection has been made, it cannot be separated again - or only with increased effort. In addition, additional work steps and/or special tools are required to produce the connection. Plug-in connections, which have been used in other areas of application for decades, offer an alternative here, as the connection can be easily made by hand and can also be separated again if necessary, i.e. it is reversible.

Auch elektrische Anschlussklemmen sind in einer Vielzahl von Ausführungsvarianten seit Jahrzehnten bekannt. Die Anschlussklemmen können beispielsweise zum Anschluss eines elektrischen Leiters oder mehrere Leiter an eine Leiterplatte als sogenannte Printklemme ausgebildet sein, wozu die Anschlussklemmen entsprechende Kontaktpins aufweisen, die in entsprechende Löcher in der Leiterplatte eingepresst oder eingelötet werden. Als Leiteranschlusselement kann beispielsweise eine Schraubklemme vorgesehen sein, durch die ein anzuschließender Leiter mit dem Stromschienenstück elektrisch leitend verbunden werden kann. Ebenso kann das Leiteranschlusselement auch als Crimpanschluss ausgebildet sein, an dem das abisolierte Ende eines anzuschließenden Leiters befestigt werden kann, wobei der Crimpanschluss dann an einem Ende des Stromschienenstücks und der Kontaktpin an den anderen Ende des Stromschienenstücks ausgebildet ist. Auch ein Schneidanschluss, bei dem ein isoliertes Ende eines Leiters in die Schneiden des Schneidanschlusses eingedrückt wird, ist als Leiteranschlusselement möglich.Electrical connection terminals have also been known in a variety of design variants for decades. The connection terminals can, for example, be designed as a so-called printed circuit board for connecting an electrical conductor or several conductors to a circuit board, for which purpose the connection terminals have corresponding contact pins which are pressed or soldered into corresponding holes in the circuit board. For example, a screw terminal can be provided as a conductor connection element, through which a conductor to be connected can be connected to the busbar piece in an electrically conductive manner. Likewise, the conductor connection element can also be designed as a crimp connection to which the stripped end of a conductor to be connected can be attached, the crimp connection then being formed at one end of the busbar piece and the contact pin at the other end of the busbar piece. A cutting connection, in which an insulated end of a conductor is pressed into the cutting edges of the cutting connection, is also possible as a conductor connection element.

Als Leiteranschlusselemente können darüber hinaus auch Klemmfedern verwendet werden, wobei sowohl schlaufenförmige Klemmfedern, sogenannte Zugfederklemmen, als auch U-förmige oder V-förmige Klemmfedern eingesetzt werden. In U-förmige oder V-förmige Klemmfedern können starre Leiter oder mit einer Aderendhülse versehene Leiter direkt, d. h. ohne das die Klemmstelle vorher mit einem Werkzeug geöffnet werden muss, eingesteckt werden. Bei den bekannten U-förmigen oder V-förmigen Klemmfedern wird der anzuschließende Leiter vom Klemmschenkel der Klemmfeder gegen das Stromschienenstück gedrückt, wodurch die elektrische Verbindung zwischen dem Leiter und dem Stromschienenstück hergestellt wird. Zum Anschließen von flexiblen Leitern muss die Klemmstelle zwischen dem Klemmschenkel und dem Stromschienenstück geöffnet werden, wozu im Gehäuse eine Betätigungsöffnung zum Einführen eines Werkzeugs, beispielsweise der Spitze eines Schraubendrehers, ausgebildet ist. Die Betätigungsöffnung dient auch dazu, die Klemmstelle zu öffnen, um einen angeschlossenen Leiter wieder aus der Klemme herausziehen zu können.Clamping springs can also be used as conductor connection elements, with both loop-shaped clamping springs, so-called tension spring clamps, as well as U-shaped or V-shaped clamping springs being used. Rigid conductors or conductors with a ferrule can be inserted directly into U-shaped or V-shaped clamping springs, ie without the clamping point having to be opened beforehand with a tool. With the known U-shaped or V-shaped clamping springs, the conductor to be connected is pressed against the busbar piece by the clamping leg of the clamping spring, whereby the electrical connection between the conductor and the busbar piece is established. To connect flexible conductors, the clamping point between the clamping leg and the busbar piece must be opened, for which purpose an actuation opening for inserting a tool, for example the tip of a screwdriver, is formed in the housing. The actuation opening also serves to open the terminal point in order to be able to pull a connected conductor out of the terminal again.

Aus der Praxis ist seit einiger Zeit ein zur Anwendung bei Leiterplatten ausgebildeter Steckkontakt bekannt, der nach Art einer Federgabel ausgebildet ist und zwei flache, relativ zueinander federnde Kontaktschenkel aufweist, die über einen gemeinsamen Verbindungsbereich miteinander verbunden sind. Der Steckkontakt wird aus einem metallischen Flachmaterial ausgestanzt und abgebogen, wobei zur Herstellung der beiden Kontaktschenkel ein möglichst schmaler Bereich zwischen den Kontaktschenkeln herausgestanzt wird. Im eingesteckten Zustand drücken die Kontaktschenkel jeweils mit ihren äußeren Stanzkanten gegen die Innenwandung des Kontaktlochs, in das der Steckkontakt eingesteckt ist. Der den Kontaktschenkeln gegenüberliegende Anschlussbereich ist als Crimpanschluss ausgebildet, so dass jeweils ein Leiter an einen Steckkontakt angeschlossen werden kann.In practice, a plug contact designed for use in circuit boards has been known for some time, which is designed in the manner of a spring fork and has two flat contact legs that are resilient relative to one another and which are connected to one another via a common connection area. The plug contact is punched out of a metallic flat material and bent, with the narrowest possible area between the contact legs being punched out to produce the two contact legs. When plugged in, the contact legs each press with their outer punched edges against the inner wall of the contact hole into which the plug contact is inserted. The connection area opposite the contact legs is designed as a crimp connection, so that one conductor can be connected to a plug contact.

Damit die beiden Kontaktschenkel stanztechnisch sicher hergestellt werden können, muss ihre Breite in etwa ihrer Dicke entsprechen, d. h. der Materialstärke des Flachmaterials, aus dem der Steckkontakt ausgestanzt ist. Da auch die Breite des zwischen den beiden Kontaktschenkeln ausgestanzten Bereichs in etwa der Materialstärke des Flachmaterials entspricht, ergibt sich, dass die Breite der einzelnen Kontaktschenkel jeweils nur knapp 1/3 der Gesamtbreite des Steckkontakts beträgt. Die Gesamtbreite des Steckkontakts, d. h. die Breite der beiden Kontaktschenkel und die Breite des zwischen den beiden Kontaktschenkeln ausgestanzten Bereichs, wird durch den Durchmesser des Kontaktlochs in der Leiterplatte, in das der Steckkontakt eingesteckt werden soll, bestimmt. Bei kleinen Lochdurchmessern führt dies dazu, dass die Kontaktschenkel des Steckkontakts sehr schmal und dünn ausgebildet sein müssen. Dies ist zunächst stanztechnisch schwierig zu realisieren, führt darüber hinaus dazu, dass die Kontakt-Normalkraft, die von den Kontaktschenkeln aufgebracht werden kann, nur relativ gering ist.In order for the two contact legs to be manufactured safely using stamping technology, their width must approximately correspond to their thickness, i.e. H. the material thickness of the flat material from which the plug contact is punched out. Since the width of the area punched out between the two contact legs also corresponds approximately to the material thickness of the flat material, it results that the width of the individual contact legs is only just under 1/3 of the total width of the plug-in contact. The total width of the plug contact, i.e. H. The width of the two contact legs and the width of the area punched out between the two contact legs is determined by the diameter of the contact hole in the circuit board into which the plug contact is to be inserted. With small hole diameters, this means that the contact legs of the plug contact have to be very narrow and thin. This is initially difficult to achieve in terms of stamping technology and also means that the normal contact force that can be applied by the contact legs is only relatively low.

Während bei der Einpressverbindung durch die hohen Kräfte während des Verbindungsprozesses eine gasdichte Verbindung zwischen den Kontaktpartnem entsteht, kommt es bei einer Steckverbindung nicht zu einer derartigen intermetallischen Verbindung. Bei einer Steckverbindung drücken die Kontaktpartner, d. h. der Steckkontakt und das Kontaktloch in der Leiterplatte mit der Kontakt-Normalkraft gegeneinander. Diese muss ausreichend groß sein, damit ein guter und dauerhafter elektrischer Kontakt zwischen den Kontaktpartnern gewährleistet werden kann. Sind die Kontaktschenkel zu schmal oder zu dünn, so ist die Kontakt-Normalkraft eventuell nicht groß genug, um dauerhaft einen guten elektrischen Kontakt zu gewährleisten.While a press-fit connection creates a gas-tight connection between the contact partners due to the high forces during the connection process, a plug-in connection does not produce such an intermetallic connection. With a plug connection, the contact partners, ie the plug contact and the contact hole in the circuit board, press against each other with the normal contact force. This must be sufficiently large to ensure good and permanent electrical contact between the contact partners. Are the contact legs too narrow? or too thin, the contact normal force may not be large enough to ensure long-term good electrical contact.

Die US 4,384,757 offenbart einen Steckkontakt mit zwei federnden Kontaktschenkeln zum Einstecken in ein Kontaktloch einer Leiterplatte. Der Stecckontakt ist aus einem Flachmaterial abgebogen, wobei ein Verbindungsbereich zusammen mit den federnden Kontaktschenkeln eine U-förmige Kontur bildet. Die beiden Kontaktschenkel sind dabei in Längsrichtung gebogen.The US 4,384,757 discloses a plug contact with two resilient contact legs for insertion into a contact hole on a circuit board. The plug-in contact is bent from a flat material, with a connection area forming a U-shaped contour together with the resilient contact legs. The two contact legs are bent in the longitudinal direction.

Die FR 2 813 997 zeigt einen Steckkontakt, gemäß dem Oberbegriff des Anspruchs 1, bei dem der Abstand der zwei Kontaktschenkel im Kontaktierungsbereich kleiner ist, als im Verbindungsbereich. Die Kontaktschenkel dieses Steckkontakts sind im Kontaktierungsbereich im Querschnitt gebogen.The FR 2 813 997 shows a plug contact, according to the preamble of claim 1, in which the distance between the two contact legs in the contact area is smaller than in the connection area. The contact legs of this plug contact are curved in cross section in the contacting area.

Eine Anschlussklemme mit mehreren zuvor beschriebenen Steckkontakten ist aus der DE 10 2011 011 017 A1 bekannt. Die einzelnen Steckkontakte sind dabei in mehreren Reihen nebeneinander in Kammern des Anschlussgehäuses so angeordnet, dass sich die Steckkontakte senkrecht zur Ebene der Leiterplatte erstrecken. Zum Anschluss einzelner Leiter sind bei den einzelnen Steckkontakten die Anschlussbereiche als Crimpanschluss ausgebildet. Dadurch können mehrere Leiter mit einer Leiterplatte verbunden werden, bei der die einzelnen Kontaktlöcher einen geringen Abstand zueinander aufweisen. Ein nachträgliches Anschließen oder Lösen einzelner Leiter ist bei der bekannten Anschlussklemme jedoch nicht möglich ist.A connection terminal with several plug contacts described above is from the DE 10 2011 011 017 A1 known. The individual plug contacts are arranged next to each other in several rows in chambers of the connection housing in such a way that the plug contacts extend perpendicular to the plane of the circuit board. To connect individual conductors, the connection areas of the individual plug contacts are designed as crimp connections. This allows several conductors to be connected to a circuit board in which the individual contact holes are at a small distance from one another. However, subsequent connection or disconnection of individual conductors is not possible with the known connection terminal.

Ein gabelförmiger Steckkontakt zur Kontaktierung einer Leiterplatte ist auch aus der DE 202 18 295 U1 bekannt. Auch bei diesem Steckkontakt drücken die Kontaktsschenkel mit ihren äußeren Stanzkanten gegen die Innenwandung des Kontaktlochs, wobei die beiden Kontaktschenkel jeweils zwei Außenkanten aufweisen, die sich beim Einpressen des Steckkontakts in das Kontaktloch der Leiterplatte in die Metallisierung der Bohrungswand eingraben. Vorzugsweise sollen dabei Kaltverschweißungen zwischen der Metallisierung der Bohrungswand und den Kontaktschenkel auftreten, um einen guten elektrischen Kontakt zu gewährleisten. Eine anschließende Trennung der Verbindung ist dann jedoch nicht oder nur noch schwer möglich.A fork-shaped plug contact for contacting a circuit board is also available DE 202 18 295 U1 known. With this plug-in contact, too, the contact legs press with their outer punched edges against the inner wall of the contact hole, with the two contact legs each having two outer edges, which dig into the metallization of the hole wall when the plug-in contact is pressed into the contact hole of the circuit board. Cold welding should preferably occur between the metallization of the bore wall and the contact leg in order to ensure good electrical contact. However, a subsequent separation of the connection is then not possible or only possible with difficulty.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen eingangs beschriebenen Steckkontakt zur Verfügung zu stellen, der auch bei geringer Materialstärke des Flachmaterials eine sichere Kontaktierung des Kontaktlochs ermöglicht, so dass der Steckverbinder einen guten und dauerhaften elektrischen Kontakt zwischen den Kontaktpartnern gewährleistet. Außerdem soll bei Bedarf der Steckkontakt auch wieder aus dem Kontaktloch heraus gezogen werden können. Darüber hinaus soll eine elektrische Anschlussklemme angegeben werden, mit der ein elektrischer Leiter auf einfache Art und Weise mit einer Leiterplatte verbunden werden kann.The present invention is based on the object of providing a plug-in contact described above, which ensures secure contacting of the contact hole even when the material thickness of the flat material is small so that the connector ensures good and permanent electrical contact between the contact partners. In addition, if necessary, the plug contact should also be able to be pulled out of the contact hole again. In addition, an electrical connection terminal is to be specified with which an electrical conductor can be easily connected to a circuit board.

Diese Aufgabe ist bei dem eingangs beschriebenen Steckkontakt mit den Merkmalen des Patentanspruchs 1 gelöst. Die beiden Kontaktschenkel weisen jeweils einen ersten Abschnitt und einen in Einsteckrichtung des Stecckontakts daran anschließenden zweiten Abschnitt auf. Die beiden Kontaktschenkel sind dabei derart aus der Ebene des Verbindungsbereichs abgebogen, dass der Verbindungsbereich und die an den Verbindungsbereich angrenzenden ersten Bereiche der beiden Kontaktschenkel zusammen eine U-förmige Kontur bilden. Die im eingesteckten Zustand des Steckkontakts das Kontaktloch kontaktierender Kontaktierungsbereiche sind dabei an den einander abgewandten Außenseiten der zweiten Abschnitte der beiden Kontaktschenkel ausgebildet, wobei jeweils ein Kontaktschenkel einen Kontaktierungsbereich aufweist.This task is solved with the plug contact described above with the features of patent claim 1. The two contact legs each have a first section and a second section adjoining it in the insertion direction of the plug-in contact. The two contact legs are bent out of the plane of the connection area in such a way that the connection area and the first areas of the two contact legs adjacent to the connection area together form a U-shaped contour. The contacting areas that contact the contact hole when the plug-in contact is inserted are formed on the outer sides of the second sections of the two contact legs facing away from one another, with each contact leg having a contacting area.

Im Unterschied zu einigen bekannten Steckkontakten erstrecken sich die Kontaktschenkel und der Verbindungsbereich somit nicht in einer gemeinsamen Ebene, sondern die Kontaktschenkel sind gegenüber dem Verbindungsbereich abgebogen. Dies führt dazu, dass die Kontaktschenkel im eingesteckten Zustand nicht mit ihren Stanzkanten, sondern mit ihren einander abgewandten Außenseiten der zweiten Abschnitte gegen die Innenwand des Kontaktlochs drücken. Dadurch wird erreicht, dass der Kontaktierungsbereich der Kontaktschenkel nicht mehr unmittelbar von der Materialstärke des metallischen Flachmaterials, aus dem der Steckkontakt hergestellt wird, abhängig ist. Bezüglich der Ausgestaltung der Kontaktschenkel, insbesondere deren Geometrie sowie der Form der Kontaktierungsbereiche bestehen dadurch mehr Gestaltungsspielräume, so dass der Steckkontakt und insbesondere die Kontaktschenkel besser an die jeweiligen Abmessungen des Kontaktlochs angepasst werden können.In contrast to some known plug contacts, the contact legs and the connection area do not extend in a common plane, but the contact legs are bent relative to the connection area. This results in the contact legs in the inserted state not pressing against the inner wall of the contact hole with their punched edges, but with their outer sides of the second sections facing away from one another. This ensures that the contact area of the contact legs is no longer directly dependent on the material thickness of the metallic flat material from which the plug contact is made. With regard to the design of the contact legs, in particular their geometry and the shape of the contacting areas, there is more scope for design, so that the plug contact and in particular the contact legs can be better adapted to the respective dimensions of the contact hole.

Dadurch, dass bei dem erfindungsgemäßen Steckkontakt die Kontaktierungsbereiche der Kontaktschenkel nicht an deren Stanzkanten sondern an der gewalzten Seite des metallischen Flachmaterials ausgebildet sind, können die Kontaktierungsbereiche auf einfache Art und Weise mit einer Beschichtung versehen sein, beispielsweise vergoldet sein. Da die Kontaktierungsbereiche nicht an den Stanzkanten ausgebildet sind, kann die Beschichtung bereits auf dem metallischem Flachmaterial aufgetragen werden, aus dem die Steckkontakte hergestellt, d.h. ausgestanzt und abgebogen werden. Eine nachträgliche und aufwändige Beschichtung der einzelnen, bereits ausgestanzten und ggf. abgebogenen Steckkontakte kann dadurch entfallen.Because in the plug-in contact according to the invention the contacting areas of the contact legs are not formed on their punched edges but on the rolled side of the metallic flat material, the Contacting areas can be provided with a coating in a simple manner, for example gold-plated. Since the contacting areas are not formed on the punched edges, the coating can already be applied to the metallic flat material from which the plug contacts are made, ie punched out and bent. This eliminates the need for subsequent and complex coating of the individual plug contacts that have already been punched out and possibly bent.

Erfindungsgemäß weisen die zweiten Abschnitte der beiden Kontaktschenkel zumindest in ihrem Kontaktierungsbereich jeweils eine im Querschnitt abgerundete Außenkontur auf. Die Ränder der Kontaktschenkel sind somit insbesondere in dem Bereich, in dem die Kontaktschenkel im eingesteckten Zustand das Kontaktloch kontaktieren, so bearbeitet, dass sie keine scharfen Kanten aufweisen, die sich beim Einstecken des Steckkontakts in das Kontaktloch in die Metallisierung der Bohrungswand eingraben. Die Außenkontur der Kontaktschenkel kann dazu einen Radius aufweisen, der kleiner als der Radius des Kontaktloches ist. Hierdurch ist es möglich, den Steckkontakt mehrfach zu stecken und zu ziehen, ohne dass es zu größeren Beschädigungen an der Innenwand des Kontaktloches in der Leiterplatte kommt. Erfindungsgemäß sind dabei die Kontaktierungsbereiche der beiden Kontaktschenkel ballig ausgebildet. Die ballige Form der Kontaktierungsbereiche kann dabei einfach mittels eines Gesenks erzeugt werden, in das die entsprechenden Bereiche der zweiten Abschnitte der Kontaktschenkel eingedrückt werden, bevor die Kontaktschenkel aus der Ebene des Verbindungsbereichs abgebogen werden.According to the invention, the second sections of the two contact legs each have an outer contour with a rounded cross-section, at least in their contacting area. The edges of the contact legs are therefore machined, particularly in the area in which the contact legs contact the contact hole when inserted, so that they do not have any sharp edges that dig into the metallization of the bore wall when the plug contact is inserted into the contact hole. For this purpose, the outer contour of the contact legs can have a radius that is smaller than the radius of the contact hole. This makes it possible to insert and remove the plug contact several times without causing major damage to the inner wall of the contact hole in the circuit board. According to the invention, the contacting areas of the two contact legs are designed to be spherical. The spherical shape of the contacting areas can be easily created using a die into which the corresponding areas of the second sections of the contact legs are pressed before the contact legs are bent out of the plane of the connection area.

Zuvor ist bereits ausgeführt worden, dass dadurch, dass die Kontaktschenkel aus der Ebene des Verbindungsbereichs abgebogen sind und die Kontaktierungsbereiche nicht an den Stanzkanten der Kontaktschenkel ausgebildet ist, die Geometrie der Kontaktschenkel einfacher an die jeweiligen Anforderungen, insbesondere an die Abmessungen des Kontaktlochs angepasst werden kann. Die beiden Kontaktschenkel sind dabei spiegelsymmetrisch zueinander angeordnet, wobei sie über ihre gesamte Längserstreckung einen Abstand voneinander aufweisen. Die Kontaktschenkel sind dabei derart abgebogen, dass der Abstand der beiden Kontaktschenkel zueinander im Bereich ihrer freien Enden am Geringsten ist. Zusätzlich ist der Abstand der Kontaktschenkel zueinander im Bereich ihrer ersten Abschnitte am Größten, so dass der Verbindungsbereich auch bei Steckkontakten, die zum Einstecken in Kontaktlöcher mit geringen Durchmessern vorgesehen sind, eine Breite aufweisen kann, die eine ausreichende Stabilität des Steckkontakts gewährleistet.It has already been stated previously that because the contact legs are bent out of the plane of the connection area and the contacting areas are not formed on the punched edges of the contact legs, the geometry of the contact legs can be more easily adapted to the respective requirements, in particular to the dimensions of the contact hole . The two contact legs are arranged mirror-symmetrically to one another, with a distance from one another over their entire longitudinal extent. The contact legs are bent in such a way that the distance between the two contact legs from one another is the smallest in the area of their free ends. In addition, the distance between the contact legs is greatest in the area of their first sections, so that the connection area is also the same for plug-in contacts that are designed to be inserted into contact holes are provided with small diameters, can have a width that ensures sufficient stability of the plug contact.

Gemäß einer weiteren vorteilhaften Ausgestaltung des erfindungsgemäßen Steckkontakts weisen die beiden Kontaktschenkel darüber hinaus in ihrem Kontaktierungsbereich jeweils eine geringere Breite als in ihrem ersten Abschnitt auf Auch hierdurch wird die Möglichkeit geschaffen, einen Stecckontakt zur Verfügung zu stellen, der in Kontaktlöcher mit geringem Durchmesser eingesteckt werden kann, ohne dass dabei die Breite der Kontaktschenkel insgesamt entsprechend gering gewählt werden muss. Dadurch wird die Herstellung des Steckkontakts erleichtert, da die Kontaktschenkel in dem Abschnitt, in dem sie von dem Verbindungsbereich abgebogen werden, nicht zu schmal sein müssen. Außerdem wird auch die Kontakt-Normalkraft, die von den Kontaktschenkeln aufgebracht werden kann, nicht zu gering, so dass auch bei geringer Materialstärke ein dauerhafter, guter elektrischer Kontakt gewährleistet werden kann.According to a further advantageous embodiment of the plug-in contact according to the invention, the two contact legs also each have a smaller width in their contacting area than in their first section. This also creates the possibility of providing a plug-in contact that can be inserted into contact holes with a small diameter , without the overall width of the contact legs having to be chosen correspondingly small. This makes the production of the plug-in contact easier because the contact legs do not have to be too narrow in the section in which they are bent away from the connection area. In addition, the normal contact force that can be applied by the contact legs is not too low, so that long-lasting, good electrical contact can be guaranteed even with low material thickness.

Die eingangs genannte Aufgabe ist bei der erfindungsgemäßen elektrischen Anschlussklemme mit den Merkmalen des Patentanspruchs 4 gelöst. Die elektrische Anschlussklemme weist einen erfindungsgemäßen Steckkontakt auf, der derart zumindest teilweise im Gehäuse der Anschlussklemme angeordnet ist, dass das Stromschienenstück von dem Anschlussbereich oder einem Abschnitt des Anschlussbereichs des Steckkontakts gebildet ist, wobei die Kontaktschenkel des Steckkontakts mit ihren zweiten Abschnitten bzw. ihren Kontaktierungsbereichen aus der Unterseite des Gehäuses herausragen. Als Unterseite des Gehäuses wird dabei die Seite bezeichnet, die der Leiterplatte zugewandt ist, wenn die Anschlussklemme auf die Leiterplatte aufgesetzt wird. Bezüglich der Vorteile der erfindungsgemäßen elektrischen Anschlussklemme wird auf die vorherigen Ausführungen im Zusammenhang mit dem erfindungsgemäßen Steckkontakt verwiesen.The task mentioned at the beginning is achieved in the electrical connection terminal according to the invention with the features of patent claim 4. The electrical connection terminal has a plug contact according to the invention, which is at least partially arranged in the housing of the connection terminal in such a way that the busbar piece is formed by the connection area or a section of the connection area of the plug contact, the contact legs of the plug contact having their second sections or their contacting areas protrude from the bottom of the housing. The underside of the housing is the side that faces the circuit board when the connection terminal is placed on the circuit board. With regard to the advantages of the electrical connection terminal according to the invention, reference is made to the previous statements in connection with the plug contact according to the invention.

Für den Anschluss des Leiters an die Anschlussklemme können unterschiedliche Anschlusstechniken verwendet werden, d. h. der erfindungsgemäße Steckkontakt kann bei Anschlussklemmen mit unterschiedlichen Anschlusstechniken eingesetzt werden. Als Leiteranschlusselement kann beispielsweise eine Schraubklemme oder eine Schneidklemme vorgesehen sein, durch die ein anzuschließender Leiter mit dem Stromschienenstück elektrisch leitend verbunden werden kann. Ebenso kann das Leiteranschlusselement auch als Crimpanschluss ausgebildet sein, an dem das abisolierte Ende eine anzuschließenden Leiters befestigt werden kann.Different connection techniques can be used to connect the conductor to the connection terminal, ie the plug contact according to the invention can be used in connection terminals with different connection techniques. A screw terminal or an insulation displacement terminal, for example, can be provided as a conductor connection element, through which a conductor to be connected can be electrically connected to the busbar piece. Likewise, the conductor connection element can also be designed as a crimp connection to which the stripped end of a conductor to be connected can be attached.

Erfindungsgemäß ist als Leiteranschlusselement eine Klemmfeder vorgesehen, die einen Klemmschenkel und einen Anlageschenkel aufweist, wobei der Klemmschenkel zusammen mit dem entsprechenden Abschnitt des Anschlussbereichs des Steckkontakts einen Federkraftklemmanschluss für den anzuschließenden Leiter bildet. Die Verwendung einer Klemmfeder als Leiteranschlusselement hat den zusätzlichen Vorteil, dass ein anzuschließender Leiter über den Federkraftklemmanschluss sehr einfach mit der Anschlussklemme und damit auch mit einer Leiterplatte verbunden werden. Bei Bedarf kann der elektrische Leiter auch wieder aus der Anschlussklemme herausgezogen werden, wenn der Federkraftklemmanschluss geöffnet wird. Die elektrische Verbindung zwischen dem Leiter und der Leiterplatte kann somit sowohl zwischen dem Leiter und dem Anschlussbereich des Steckkontakts als auch zwischen den Kontaktschenkeln des Steckkontakts und der Leiterplatte gelöst werden.According to the invention, a clamping spring is provided as the conductor connection element, which has a clamping leg and a contact leg, the clamping leg together with the corresponding section of the connection area of the plug contact forming a spring-loaded clamping connection for the conductor to be connected. The use of a clamping spring as a conductor connection element has the additional advantage that a conductor to be connected can be connected very easily to the connection terminal and thus also to a circuit board via the spring-loaded clamp connection. If necessary, the electrical conductor can also be pulled out of the connection terminal again when the spring-loaded terminal connection is opened. The electrical connection between the conductor and the circuit board can thus be released both between the conductor and the connection area of the plug contact and between the contact legs of the plug contact and the circuit board.

Erstreckt sich bei der elektrischen Anschlussklemme der Anschlussbereich in Längsrichtung der Kontaktschenkel, so ist die Leitereinführungsöffnung auf der Oberseite des Gehäuses angeordnet und ein anzuschließender elektrischer Leiter wird senkrecht zur Ebene der Leiterplatte in die Anschlussklemme eingesteckt. Daneben ist es jedoch auch möglich, dass der Anschlussbereich des Steckkontakts senkrecht - oder unter einem Winkel ungleich 90° - zur Längsrichtung der Kontaktschenkel abgebogen ist, so dass dann die Leitereinführungsöffnung entsprechend an einer Stirnseite des Gehäuses angeordnet ist. In beiden Fällen wird der elektrische Leiter vom freien Ende des Kontaktschenkels gegen den entsprechenden Abschnitt des Anschlussbereichs gedrückt, wodurch die elektrische Verbindung zwischen dem Leiter und dem Steckkontakt hergestellt wird. Ein Lösen des Leiters aus der Anschlussklemme ist dadurch einfach möglich, dass die Klemmstelle geöffnet wird, wozu der Klemmschenkel der Klemmfeder mittels eines in die Betätigungsöffnung eingeführten Werkzeugs oder eines in der Betätigungsöffnung angeordneten Betätigungsdrückers entgegen seiner Federkraft ausgelenkt wird. Der Leiter kann dann wieder aus der Klemmstelle zwischen dem Klemmschenkel und dem Anschlussbereich des Steckkontakts herausgezogen werden.If the connection area of the electrical connection terminal extends in the longitudinal direction of the contact legs, the conductor insertion opening is arranged on the top of the housing and an electrical conductor to be connected is inserted into the connection terminal perpendicular to the plane of the circuit board. In addition, however, it is also possible for the connection area of the plug contact to be bent perpendicularly - or at an angle not equal to 90° - to the longitudinal direction of the contact legs, so that the conductor insertion opening is then arranged accordingly on an end face of the housing. In both cases, the electrical conductor is pressed from the free end of the contact leg against the corresponding section of the connection area, whereby the electrical connection between the conductor and the plug contact is established. Releasing the conductor from the connection terminal is easily possible by opening the clamping point, for which purpose the clamping leg of the clamping spring is deflected against its spring force by means of a tool inserted into the actuation opening or an actuation pusher arranged in the actuation opening. The conductor can then be pulled out again from the clamping point between the clamping leg and the connection area of the plug contact.

Um einen guten elektrischen Kontakt zwischen einem eingesteckten elektrischen Leiter und dem Steckkontakt zu erreichen, sind auf der dem Klemmschenkel zugewandten Seite des Anschlussbereichs des Steckkontakts vorzugsweise mehrere Rillen oder Einkerbungen ausgebildet. Durch eine derartige Struktur des Anschlussbereichs wird die Flächenpressung zwischen dem eingesteckten Leiter und dem Steckkontakt erhöht, was zu einem geringeren Übergangswiderstand führt.In order to achieve good electrical contact between an inserted electrical conductor and the plug contact, several grooves or notches are preferably formed on the side of the connection area of the plug contact facing the clamping leg. Such a structure of the connection area increases the surface pressure between the inserted conductor and the plug contact, which leads to a lower contact resistance.

Zur einfachen Montage der elektrischen Anschlussklemme auf einer Leiterplatte ist gemäß einer weiteren vorteilhaften Ausgestaltung vorgesehen, dass an der Unterseite des Gehäuses mehrere Justierelemente ausgebildet sind, die beim Aufsetzen der Anschlussklemme auf die Leiterplatte in korrespondierende Ausnehmungen in der Leiterplatte einführt werden. Die Enden der Justierelemente sind dabei vorzugsweise konusförmig ausgebildet, was das Einführen der Justierelemente in die korrespondierenden Ausnehmungen in der Leiterplatte erleichtert. Darüber hinaus ist die Länge der Justierelemente so gewählt, dass beim Aufsetzen der Anschlussklemme auf die Leiterplatte zunächst die Justierelemente mit ihren freien Enden in die korrespondierenden Ausnehmungen in der Leiterplatte eingreifen, bevor die Kontaktierungsbereiche der Kontaktschenkel des Steckkontakts in die korrespondierende Kontaktlöcher in der Leiterplatte eintauchen.For easy assembly of the electrical connection terminal on a circuit board, according to a further advantageous embodiment, a plurality of adjusting elements are formed on the underside of the housing, which are inserted into corresponding recesses in the circuit board when the connection terminal is placed on the circuit board. The ends of the adjusting elements are preferably conical, which makes it easier to insert the adjusting elements into the corresponding recesses in the circuit board. In addition, the length of the adjusting elements is selected so that when the connection terminal is placed on the circuit board, the adjusting elements first engage with their free ends in the corresponding recesses in the circuit board before the contacting areas of the contact legs of the plug-in contact dip into the corresponding contact holes in the circuit board.

Gemäß einer weiteren vorteilhaften Ausgestaltung der erfindungsgemäßen elektrischen Anschlussklemme sind zusätzlich zu den Justierelementen mindestens zwei Rastelemente an der Unterseite des Gehäuses ausgebildet, die in korrespondierende Ausnehmungen in der Leiterplatte eingreifen. Durch entsprechende Rastvorsprünge oder Rastnasen kann sichergestellt werden, dass die elektrische Anschlussklemme nach dem Aufsetzen auf eine Leiterplatte sicher an dieser befestigt ist. Vorzugsweise sind die Rastelemente dabei so ausgebildet, dass sie aus einem ersten, nicht verrastenden Zustand in einen zweiten, verrastenden Zustand und umgekehrt überführt werden können. Dadurch besteht die Möglichkeit, die Verrastung zwischen dem Gehäuse der elektrischen Anschlussklemme und der Leiterplatte wieder zu lösen, so dass die elektrische Anschlussklemme bei Bedarf wieder von der Leiterplatte abgehoben werden kann.According to a further advantageous embodiment of the electrical connection terminal according to the invention, in addition to the adjusting elements, at least two locking elements are formed on the underside of the housing, which engage in corresponding recesses in the circuit board. Appropriate locking projections or locking lugs can be used to ensure that the electrical connection terminal is securely attached to a circuit board after it has been placed on it. The latching elements are preferably designed in such a way that they can be transferred from a first, non-latching state to a second, latching state and vice versa. This makes it possible to release the latching between the housing of the electrical connection terminal and the circuit board again, so that the electrical connection terminal can be lifted off the circuit board again if necessary.

Im Einzelnen gibt es nun eine Mehrzahl von Möglichkeiten, den erfindungsgemäßen Steckkontakt sowie die erfindungsgemäße elektrische Anschlussklemme auszugestalten und weiterzubilden. Dazu wird verwiesen auf die den Patentansprüchen 1 und 4 nachgeordneten Patentansprüche und auf die nachfolgende Beschreibung in Verbindung mit den Zeichnungen. In den Zeichnungen zeigen

Fig. 1
eine perspektivische Darstellung eines bevorzugten Ausführungsbeispiels eines erfindungsgemäßen Steckkontakts, mit einer Klemmfeder,
Fig. 2
einen Darstellung des Steckkontakt gemäß Fig. 1, von der Rückseite,
Fig. 3
eine vergrößerte perspektivische Darstellung eines erfindungsgemäßen Steckkontakts, mit einen anderen Anschlussbereich,
Fig. 4
zwei Fertigungsstufen bei der Herstellung des Steckkontakts gemäß Fig. 1,
Fig. 5
ein bevorzugtes Ausführungsbeispiel einer erfindungsgemäßen elektrischen Anschlussklemme, aufgesteckt auf eine Leiterplatte,
Fig. 6
die elektrische Anschlussklemme gemäß Fig. 5, im Querschnitt, und
Fig. 7
ein vergrößerter Ausschnitt der elektrische Anschlussklemme gemäß Fig. 6.
In detail, there are now a number of options for the plug contact according to the invention and the electrical connection terminal according to the invention to develop and further develop. Reference is made to the patent claims subordinate to claims 1 and 4 and to the following description in conjunction with the drawings. Show in the drawings
Fig. 1
a perspective view of a preferred embodiment of a plug contact according to the invention, with a clamping spring,
Fig. 2
a representation of the plug contact according to Fig. 1 , from the back,
Fig. 3
an enlarged perspective view of a plug contact according to the invention, with a different connection area,
Fig. 4
two production stages in the production of the plug contact Fig. 1 ,
Fig. 5
a preferred embodiment of an electrical connection terminal according to the invention, plugged onto a circuit board,
Fig. 6
the electrical connection terminal according to Fig. 5 , in cross section, and
Fig. 7
an enlarged section of the electrical connection terminal according to Fig. 6 .

Die Fig. 1 und 2 zeigen ein bevorzugtes Ausführungsbeispiel eines Steckkontakts 1 zur Kontaktierung einer Leiterplatte 2, wozu der Steckkontakt 1 in ein korrespondierendes Kontaktloch 3 in der Leiterplatte 2 eingesteckt wird (vgl. Fig. 6 und 7). Der aus einem metallischen Flachmaterial ausgestanzte und abgebogene Steckkontakt 1 weist zwei relativ zueinander federnde Kontaktschenkel 4, 5, einen Anschlussbereich 6 und einen Verbindungsbereich 7 auf, wobei die beiden Kontaktschenkel 4, 5 über den Verbindungsbereich 7 miteinander und mit dem Anschlussbereich 6 verbunden sind.The Fig. 1 and 2 show a preferred exemplary embodiment of a plug-in contact 1 for contacting a circuit board 2, for which purpose the plug-in contact 1 is inserted into a corresponding contact hole 3 in the circuit board 2 (cf. Fig. 6 and 7 ). The plug contact 1, punched out and bent from a metallic flat material, has two contact legs 4, 5 which are resilient relative to one another, a connection area 6 and a connection area 7, the two contact legs 4, 5 being connected to one another and to the connection area 6 via the connection area 7.

Die beiden Kontaktschenkel 4, 5 weisen jeweils einen ersten Abschnitt 4a, 5a und einen zweiten Abschnitt 4b, 5b auf, der sich in Einsteckrichtung E des Steckkontakts 1 jeweils an den ersten Abschnitt 4a, 5a anschließt. Wie insbesondere aus Fig. 1 ersichtlich ist, sind die beiden Kontaktschenkel 4, 5 aus der Ebene des Verbindungsbereichs 7 abgebogen, so dass der Verbindungsbereich 7 und die daran anschließenden ersten Bereiche 4a, 5a der beiden Kontaktschenkel 4, 5 zusammen eine U-förmige Kontur bilden. Die Kontaktschenkel 4, 5 sind dabei näherungsweise senkrecht vom Verbindungsbereich 7 abgebogen, so dass der Verbindungsbereich 7 den U-Rücken und die beiden ersten Abschnitte 4a, 5a der Kontaktschenkel 4, 5 die U-Schenkel der U-förmigen Kontur bilden.The two contact legs 4, 5 each have a first section 4a, 5a and a second section 4b, 5b, which adjoins the first section 4a, 5a in the insertion direction E of the plug contact 1. How in particular Fig. 1 As can be seen, the two contact legs 4, 5 are bent out of the plane of the connection area 7, so that the connection area 7 and the adjoining first areas 4a, 5a of the two contact legs 4, 5 together form a U-shaped contour. The contact legs 4, 5 are bent approximately perpendicularly from the connection area 7, so that the connection area 7 forms the U-back and the two first sections 4a, 5a of the contact legs 4, 5 form the U-legs of the U-shaped contour.

An den einander abgewandten Außenseiten der zweiten Abschnitte 4b, 5b der beiden Kontaktschenkel 4, 5 sind die Kontaktierungsbereiche 4c, 5c ausgebildet, die im eingesteckten Zustand des Steckkontakts 1 das Kontaktloch 3 kontaktieren. Wie aus den Fig. 1 und 2 und insbesondere auch aus den vergrößerten Darstellungen gemäß Fig. 3 ersichtlich ist, sind die Kontaktierungsbereiche 4c, 5c ballig ausgebildet. Der Radius der Außenkontur der Kontaktbereiche 4c, 5c ist dabei etwas geringer als der Radius des Kontaktlochs 3, so dass beim Einstecken der Kontaktschenkel 4, 5 in das Kontaktloch 3 die metallisierte Innenwandung des Kontaktlochs 3 nicht beschädigt wird.On the mutually facing outer sides of the second sections 4b, 5b of the two contact legs 4, 5, the contacting areas 4c, 5c are formed, which contact the contact hole 3 when the plug contact 1 is inserted. Like from the Fig. 1 and 2 and in particular also from the enlarged representations Fig. 3 As can be seen, the contact areas 4c, 5c are spherical. The radius of the outer contour of the contact areas 4c, 5c is slightly smaller than the radius of the contact hole 3, so that when the contact legs 4, 5 are inserted into the contact hole 3, the metallized inner wall of the contact hole 3 is not damaged.

Wie aus den Fig. 1 bis 3 ersichtlich ist, sind die beiden Kontaktschenkel 4, 5 spiegelsymmetrisch zueinander angeordnet und weisen über ihre gesamte Längserstreckung einen Abstand voneinander auf. Der Abstand der Kontaktschenkel 4, 5 voneinander ist dabei im Bereich ihrer freien Enden 4d, 5d am Geringsten, während er im Bereich der ersten Abschnitte 4a, 5a am Größten ist. Die Kontaktschenkel 4, 5 sind somit ausgehend vom Verbindungsbereich 7 bzw. von ihren ersten Abschnitten 4a, 5a aufeinander zugebogen, wobei sich darüber hinaus auch die Breite der Kontaktschenkel 4, 5 in Richtung der freien Enden 4d, 5d verringert. Dadurch können die Kontaktschenkel 4, 5 in ein Kontaktloch 3 eingesteckt werden, dessen Durchmesser geringer ist als der Abstand der beiden ersten Abschnitte 4a, 5a der beiden Kontaktschenkel 4, 5 bzw. die Breite des Verbindungsbereichs 7. So kann ein Steckkontakt 1 realisiert werden, der in sehr kleine Kontaktlöcher 3 eingesteckt werden kann und dennoch eine ausreichend große Steifigkeit und Stabilität aufweist, so dass es beim Einstecken der Kontaktschenkel 4, 5 in das Kontaktloch 3 nicht zu Verformungen des Steckkontakts 1 kommt.Like from the Fig. 1 to 3 As can be seen, the two contact legs 4, 5 are arranged mirror-symmetrically to one another and are at a distance from one another over their entire longitudinal extent. The distance between the contact legs 4, 5 from one another is smallest in the area of their free ends 4d, 5d, while it is greatest in the area of the first sections 4a, 5a. The contact legs 4, 5 are thus bent towards one another starting from the connection area 7 or from their first sections 4a, 5a, with the width of the contact legs 4, 5 also reducing in the direction of the free ends 4d, 5d. As a result, the contact legs 4, 5 can be inserted into a contact hole 3, the diameter of which is smaller than the distance between the first two sections 4a, 5a of the two contact legs 4, 5 or the width of the connection area 7. A plug-in contact 1 can thus be realized, which can be inserted into very small contact holes 3 and still has sufficient rigidity and stability so that the plug contact 1 is not deformed when the contact legs 4, 5 are inserted into the contact hole 3.

Der in Fig. 3 vergrößert dargestellte Steckkontakt 1 unterscheidet sich von dem in den Fig. 1 und 2 dargestellten Steckkontakt 1 nur durch eine etwas andere Ausgestaltung des Anschlussbereichs 6. Der Anschlussbereich 6 ist hierbei als gerade Zunge ausgebildet, die ebenso wie der Abschnitt 6a des Anschlussbereichs 6 gemäß den Fig. 1 und 2 der Kontaktierung eines elektrischen Leiters dient.The in Fig. 3 Plug contact 1 shown enlarged differs from that in the Fig. 1 and 2 shown plug contact 1 only by a slightly different design of the connection area 6. The connection area 6 is designed as a straight tongue, which, like the section 6a of the connection area 6 according to Fig. 1 and 2 serves to contact an electrical conductor.

Fig. 4 zeigt zwei Zwischenschritte bei der Herstellung des erfindungsgemäßen Steckkontakts 1, wobei in Fig. 4a der Steckkontakt 1 nach dem Ausstanzen aus einem metallischem Flachmaterial dargestellt ist. Das metallische Flachmaterial kann dabei eine Dicke von weniger als 0,5 mm beispielsweise eine Dicke von nur 0,3 - 0,4 mm aufweisen. Die ballige Form der Kontaktierungsbereiche 4c, 5c ist dadurch erzeugt worden, dass die entsprechenden Bereiche der zweiten Abschnitte 4b, 5b der Kontaktschenkel 4, 5 in ein Gesenk eingedrückt worden sind. Bei der Darstellung gemäß Fig. 4b sind nach einem weiteren Verfahrensschritt zwei Abschnitte des Anschlussbereichs 6 nach oben abgebogen, so dass der Anschlussbereich 6 eine U-förmige Kontur mit einem U-Rücken 8 und zwei Seitenwänden 9 aufweist. Schließlich werden die beiden Kontaktschenkel 4, 5 aus der Ebene des Verbindungsbereichs 7 im Wesentlichen senkrecht nach oben abgebogen und die zweiten Abschnitte 4b, 5b der Kontaktschenkel 4, 5 aufeinander zugebogen, so dass die in Fig. 1 dargestellte Form des Steckkontakts 1 erreicht wird. Fig. 4 shows two intermediate steps in the production of the plug contact 1 according to the invention, where in Fig. 4a the plug contact 1 is shown after being punched out of a metallic flat material. The metallic flat material can have a thickness of less than 0.5 mm, for example a thickness of only 0.3 - 0.4 mm. The spherical shape of the contacting areas 4c, 5c was created by pressing the corresponding areas of the second sections 4b, 5b of the contact legs 4, 5 into a die. When presented according to Fig. 4b After a further process step, two sections of the connection area 6 are bent upwards, so that the connection area 6 has a U-shaped contour with a U-back 8 and two side walls 9. Finally, the two contact legs 4, 5 are bent essentially vertically upwards from the plane of the connection area 7 and the second sections 4b, 5b of the contact legs 4, 5 are bent towards one another, so that the in Fig. 1 shown shape of the plug contact 1 is achieved.

Die Fig. 5 und 6 zeigen ein bevorzugtes Ausführungsbeispiel einer erfindungsgemäßen elektrischen Anschlussklemme 10, die ein in der Regel aus Kunststoff bestehendes Gehäuse 11 aufweist. In dem Gehäuse 11 sind mehrere Leitereinführungsöffnungen 12 und eine entsprechende Anzahl an Klemmfedern 13 und Steckkontakten 1 angeordnet. Das in den Figuren dargestellte Ausführungsbeispiel der elektrischen Anschlussklemme 10 dient zum Anschluss von zehn einzelnen Leitern, so dass in dem Gehäuse 11 auch insgesamt zehn Klemmfedern 13 und zehn Steckkontakte 1 angeordnet sind, wobei jeweils zwei Klemmfeder 13 spiegelsymmetrisch einander gegenüberliegend angeordnet sind, wie aus Fig. 6 erkennbar ist. Die einzelnen Klemmfedern 13, von denen in der Querschnittsdarstellung gemäß Fig. 6 zwei in der Anschlussklemme 10 einander gegenüberliegend erkennbar sind, weisen jeweils einen Klemmschenkel 14 und einen Anlageschenkel 15 auf.The 5 and 6 show a preferred embodiment of an electrical connection terminal 10 according to the invention, which has a housing 11 generally made of plastic. A plurality of conductor insertion openings 12 and a corresponding number of clamping springs 13 and plug contacts 1 are arranged in the housing 11. The exemplary embodiment of the electrical connection terminal 10 shown in the figures is used to connect ten individual conductors, so that a total of ten clamping springs 13 and ten plug contacts 1 are arranged in the housing 11, with two clamping springs 13 each being arranged mirror-symmetrically opposite one another, as shown Fig. 6 is recognizable. The individual clamping springs 13, of which are shown in the cross-sectional view Fig. 6 two opposite each other can be seen in the connection terminal 10, each have a clamping leg 14 and a contact leg 15.

Jeder Klemmfeder 13 ist ein Steckkontakt 1 derart zugeordnet, dass ein von einer Seitenwand 9 gebildeter Abschnitt 6a des Anschlussbereichs 6 eines Steckkontakts 1 zusammen mit dem freien Ende des Klemmschenkels 14 einer Klemmfeder 13 einen Federkraftklemmanschluss für einen durch eine Leitereinführungsöffnung 12 in das Gehäuse 11 eingeführten elektrischen Leiter bildet. Da die Anschlussklemme 10 zum Anschluss von zehn Leitern vorgesehen ist, sind in dem Gehäuse 11 entsprechend auch zehn Leitereinführungsöffnungen 12 und zehn Betätigungsöffnungen 16 zum Öffnen jeweils eines Federkraftklemmanschlusses ausgebildet.Each clamping spring 13 is assigned a plug-in contact 1 in such a way that a section 6a of the connection area 6 of a plug-in contact 1 formed by a side wall 9, together with the free end of the clamping leg 14 of a clamping spring 13, forms a spring-loaded clamping connection for an electrical connection inserted through a conductor insertion opening 12 into the housing 11 leader forms. Since the connection terminal 10 is provided for connecting ten conductors, ten conductor insertion openings 12 and ten actuation openings 16 are also formed in the housing 11 for opening one spring-loaded terminal connection.

Aus den Fig. 5 bis 7 ist erkennbar, dass die einzelnen Kontaktschenkel 4, 5 mit ihren zweiten Abschnitten 4b, 5b, insbesondere mit den Bereichen der zweiten Abschnitte 4b, 5b, an denen die Kontaktierungsabschnitte 4c, 5c ausgebildet sind, aus der Unterseite 17 des Gehäuses 11 herausragen. So können die Kontaktierungsabschnitte 4c, 5c die korrespondierenden Kontaktlöcher 3 in der Leiterplatte 2 kontaktieren, wenn die Anschlussklemme 10 auf die Leiterplatte 2 aufgesetzt wird.From the Fig. 5 to 7 It can be seen that the individual contact legs 4, 5 with their second sections 4b, 5b, in particular with the areas of the second sections 4b, 5b on which the contacting sections 4c, 5c are formed, protrude from the underside 17 of the housing 11. The contacting sections 4c, 5c can thus contact the corresponding contact holes 3 in the circuit board 2 when the connection terminal 10 is placed on the circuit board 2.

Um einen guten elektrischen Kontakts zwischen einem angeschlossenen elektrischen Leiter und dem Anschlussbereich 6 eines Steckkontakts 1 zu gewährleisten, sind auf der dem Klemmschenkel 14 zugewandten Seite des Abschnitts 6a des Anschlussbereichs 6 mehrere Rillen 18 ausgebildet, wie aus Fig. 1 erkennbar ist. Dadurch wird die Flächenpressung zwischen einem eingesteckten und vom Ende des Klemmschenkels 14 gegen den Abschnitt 6a gedrückten Leiters und dem Abschnitt 6a erhöht.In order to ensure good electrical contact between a connected electrical conductor and the connection area 6 of a plug contact 1, several grooves 18 are formed on the side of the section 6a of the connection area 6 facing the clamping leg 14, as shown Fig. 1 is recognizable. This increases the surface pressure between a conductor that is inserted and pressed against the section 6a from the end of the clamping leg 14 and the section 6a.

Zur Befestigung des Gehäuses 11 der elektrischen Anschlussklemme 10 auf der Leiterplatte 2 sind an der Unterseite 17 des Gehäuses 11 mehrere Justierelemente 19 sowie an den beiden Stirnseiten des Gehäuses 11 zwei Rastelemente 20 ausgebildet, die jeweils über die Unterseite 17 des Gehäuses 11 hinausragen und in korrespondierende Ausnehmungen in der Leiterplatte 2 eingesteckt werden können. Zur Herstellung der Verrastung in den entsprechenden Ausnehmungen in der Leiterplatte 2 können die beiden Rastelemente 20 jeweils einander gegenüberliegende Rastnasen aufweisen. Mit Hilfe eines zwischen den gegenüberliegenden Rastnasen angeordneten, in Längsrichtung des Rastelements 20 verschiebbar ausgebildeter Verriegelungsstifts kann ein ungewolltes Zurückfedern der Rastnasen verhindert werden, wenn sich der Verriegelungsstift in seiner Verriegelungsstellung zwischen den beiden Rastnasen befindet.To attach the housing 11 of the electrical connection terminal 10 to the circuit board 2, several adjusting elements 19 are formed on the underside 17 of the housing 11 and two locking elements 20 are formed on the two end faces of the housing 11, each of which protrudes beyond the underside 17 of the housing 11 and into corresponding ones Recesses in the circuit board 2 can be inserted. To produce the locking in the corresponding recesses in the circuit board 2, the two locking elements 20 can each have locking lugs that are opposite one another. With the help of a locking pin arranged between the opposite locking lugs and designed to be displaceable in the longitudinal direction of the locking element 20, an unwanted springing back of the locking lugs can be prevented when the Locking pin is in its locking position between the two locking lugs.

Um die Klemmstelle zwischen dem freien Ende des Klemmschenkel 14 der Klemmfeder 13 und dem gegenüberliegenden Anschlussbereich 6 eines Steckkontakts 1 einfach öffnen zu können, ist in den Betätigungsöffnungen 16 jeweils ein Betätigungsdrücker 21 verschiebbar angeordnet. Ist der Betätigungsdrücker 21 in die Betätigungsöffnung 16 des Gehäuses 11 eingedrückt, so lenkt der Betätigungsdrücker 21 den Klemmschenkel 14 der Klemmfeder 13 entgegen dessen Federkraft aus, so dass ein angeschlossener Leiter aus der Klemmstelle herausgezogen oder ein flexibler Leiter in die Klemmstelle eingeführt werden kann.In order to be able to easily open the clamping point between the free end of the clamping leg 14 of the clamping spring 13 and the opposite connection area 6 of a plug contact 1, an actuation pusher 21 is displaceably arranged in each of the actuation openings 16. If the actuation pusher 21 is pressed into the actuation opening 16 of the housing 11, the actuation pusher 21 deflects the clamping leg 14 of the clamping spring 13 against its spring force, so that a connected conductor can be pulled out of the clamping point or a flexible conductor can be inserted into the clamping point.

Claims (7)

  1. Plug-in contact (1) for making electrical contact with a printed circuit board (2) by inserting the plug-in contact (1) into a contact hole (3) in the printed circuit board (2), having two contact legs (4, 5) which are resilient relative to one another, a terminal region (6) and a connecting region (7), wherein the connecting region (7) connects the two contact legs (4, 5) to one another and to the terminal region (6), and wherein the plug-in contact (1) is designed from a metallic flat material,
    wherein the two contact legs (4, 5) each have a first section (4a, 5a) and a second section (4b, 5b) adjoining the first section in the insertion direction (E) of the plug-in contact (1),
    wherein the two contact legs (4, 5) are bent so that the connecting region (7) and the first sections (4a, 5a) of the two contact legs (4, 5) adjoining the connecting region (7) together form a U-shaped contour, and
    wherein a respective contact-making region (4c, 5c) contacting the contact hole (3) in the inserted state is designed on the outer sides of the second sections (4b, 5b) of the two contact legs (4, 5) facing away from each other,
    wherein the second sections (4b, 5b) of the two contact legs (4, 5) each have, at least in their contact-making region (4c, 5c), an outer contour which is rounded in cross section,
    wherein the two contact legs (4, 5) are arranged mirror-symmetrically with respect to one another and are spaced apart from one another over their entire longitudinal extent, wherein the spacing of the contact legs (4, 5) is smallest in the region of their free ends (4d, 5d) and largest in the region of their first sections (4a, 5a),
    characterized in
    that the two contact legs (4, 5) are bent out of the plane of the connecting region (7), and
    that the contact-making regions (4c, 5c) of the two contact legs (4, 5) are designed to be spherical.
  2. Plug contact (1) according to claim 1 , characterized in that the two contact legs (4, 5) each have a smaller width in their contact-making region (4c, 5c) than in their first section (4a, 5a).
  3. Plug contact (1) according to claim 1 or 2, characterized in that the contact legs (4, 5) each have a thickness of less than 0.5 mm.
  4. Electrical connection terminal (10) having a housing (11), having a conductor connection element and having a conductor bar piece, wherein a conductor to be connected can be electrically conductively connected to the b conductor bar piece by means of the conductor connection element, and wherein a conductor insertion opening (12) is designed in the housing (11) for inserting the electrical conductor to be connected,
    characterized in
    that a plug-in contact (1) according to any one of claims 1 to 3 is arranged in the housing (11) in such a way that the conductor bar piece is formed by the terminal region (6) or a section (6a) of the terminal region (6) of the plug-in contact (1), and the contact legs (4, 5) project with their second sections (4b, 5b) from the underside (17) of the housing (11) facing a printed circuit board (2), and
    that a clamping spring (13) is arranged in the housing (11) as a conductor connection element, wherein the clamping spring (13) has a clamping leg (14) and a contact leg (15) and the clamping leg (14) forms with the terminal region (6) or a section (6a) of the terminal region (6) of the plug-in contact (1) a spring-loaded clamping connection for an electrical conductor to be connected, and wherein an actuating opening (16) for opening the spring-loaded clamping connection is designed in the housing (11).
  5. Electrical connection terminal (10) according to claim 4, characterized in that a plurality of grooves (18) or notches are formed on the side of the terminal region (6) or of the section (6a) of the terminal region (6) of the plug-in contact (1) facing the clamping leg (14).
  6. Electrical connection terminal (10) according to claim 4 or 5, characterized in that a plurality of adjustment elements (19) are designed on the underside (17) of the housing (11) for insertion into corresponding recesses in a printed circuit board (2).
  7. Electrical connection terminal (10) according to any one of claims 4 to 6, characterized in that an actuating pusher (21) is arranged in the actuating opening (16), which can be displaced from a first position, in which the spring-loaded clamping connection is closed, into a second position, in which the actuating pusher (21) deflects the clamping leg (14) with its end facing the clamping leg (14) against the spring force of the clamping spring (13), so that the spring-loaded clamping connection is open.
EP17718102.1A 2016-04-22 2017-04-21 Plug contact Active EP3446367B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU93039A LU93039B1 (en) 2016-04-22 2016-04-22 plug contact
PCT/EP2017/059545 WO2017182647A1 (en) 2016-04-22 2017-04-21 Plug contact

Publications (2)

Publication Number Publication Date
EP3446367A1 EP3446367A1 (en) 2019-02-27
EP3446367B1 true EP3446367B1 (en) 2023-09-27

Family

ID=56096678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17718102.1A Active EP3446367B1 (en) 2016-04-22 2017-04-21 Plug contact

Country Status (5)

Country Link
US (1) US20190140375A1 (en)
EP (1) EP3446367B1 (en)
CN (1) CN109075473B (en)
LU (1) LU93039B1 (en)
WO (1) WO2017182647A1 (en)

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JP6780513B2 (en) * 2017-01-18 2020-11-04 株式会社オートネットワーク技術研究所 Terminal module
DE102020121004A1 (en) * 2019-08-15 2021-02-18 Phoenix Contact Gmbh & Co. Kg Contact element and connection element
DE102020104077A1 (en) * 2020-02-17 2021-08-19 WAGO Verwaltungsgesellschaft mit beschränkter Haftung Spring clamp connection

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Also Published As

Publication number Publication date
LU93039B1 (en) 2017-10-27
US20190140375A1 (en) 2019-05-09
CN109075473A (en) 2018-12-21
CN109075473B (en) 2021-05-28
EP3446367A1 (en) 2019-02-27
WO2017182647A1 (en) 2017-10-26

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