EP4222820A1 - Contact element for printed circuit board plug connector - Google Patents

Contact element for printed circuit board plug connector

Info

Publication number
EP4222820A1
EP4222820A1 EP21791249.2A EP21791249A EP4222820A1 EP 4222820 A1 EP4222820 A1 EP 4222820A1 EP 21791249 A EP21791249 A EP 21791249A EP 4222820 A1 EP4222820 A1 EP 4222820A1
Authority
EP
European Patent Office
Prior art keywords
contact element
contact
area
electrical contact
narrow side
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.)
Pending
Application number
EP21791249.2A
Other languages
German (de)
French (fr)
Inventor
Jana BÜTTEMEYER
Gert Havermann
Marc GENAU
Dieter Rose
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.)
Harting Electric Stiftung and Co KG
Original Assignee
Harting Electric Stiftung 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 Harting Electric Stiftung and Co KG filed Critical Harting Electric Stiftung and Co KG
Publication of EP4222820A1 publication Critical patent/EP4222820A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/28—Contacts for sliding cooperation with identically-shaped contact, e.g. for hermaphroditic coupling devices
    • 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
    • H01R12/7076—Coupling devices for connection between PCB and component, e.g. display
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/57—Fixed connections for rigid printed circuits or like structures characterised by the terminals surface mounting terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • H01R13/08—Resiliently-mounted rigid 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/14—Resiliently-mounted rigid sockets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/84—Hermaphroditic coupling devices

Definitions

  • the invention is based on a contact element for printed circuit board connectors according to the generic type of independent claim 1 .
  • Such contact elements are designed to produce an electrically conductive connection with contact elements that are basically identical in construction.
  • Such contact elements are often referred to as “hermaphrodite” because they can be connected to themselves or to contact elements of the same/similar construction and connectors are usually named “male” and “female”, whereby male and female contact elements can be plugged into one another.
  • hermaphroditic contact elements have improved signal integrity compared to standard male-female contact pairs. With hermaphroditic contact pairs, a STUB effect can be prevented, which negatively affects frequencies and thus data rates due to resonances that occur. Essentially, a hermaphroditic contact pair is better suited for transmitting higher frequencies/data rates.
  • Another advantage is that, depending on the connector, their design only has to be worked out once. In this way, they can be manufactured in a single design in quantities that are twice as high compared to contact elements that are designed in different ways.
  • US Pat. No. 8,998,645 B2 shows an electrical connection system for electrical connectors in which the contacts are identical for both the male and female sides of the connection.
  • the contacts are positioned in a linear array in a dielectric grid. This arrangement results in a low cost design with the potential for high electronic data transmission.
  • a disadvantage of the proposed embodiment is, on the one hand, the increased space requirement, in particular in relation to its width, and the limited adjustability of the insertion forces resulting from the alignment of the contacts.
  • the contacts are designed to make contact with the broad sides of the contacts.
  • the broad sides mean the sides of a contact, which, for example, are made from sheet metal or a coil from the plane area during the production of the contact, while the narrow sides are to be understood as the sides, which result from the material thickness of the sheet metal or result in coils.
  • the object of the invention is to offer a space-saving, cost-effective alternative to contact elements from the prior art which nevertheless provides reliable contact.
  • the invention is based on an electrical contact element for use in a printed circuit board connector, the contact element being designed with at least two opposite narrow sides and at least two opposite broad sides.
  • At least one narrow side has at least one contact surface and at least one contact tip arranged on a contact tip.
  • the contact surface is designed to be brought into an electrically conductive connection by at least one contact tip of an at least essentially structurally identical contact element.
  • the contact tip of the contact element is also brought into an electrically conductive connection with the contact surface of an at least essentially identical contact element.
  • the contact element also has at least one rigid area and one flexible area.
  • the narrow side is to be understood as meaning the sides that result from the material thickness of a transport unit, for example the material thickness of a coil, sheet metal or strip.
  • a broad side therefore results from the type of production of the contact element, for example a laser cutting process, a stamping process or other known processes.
  • a material with a thickness of less than or equal to 0.5 mm is usually used.
  • material thicknesses of less than or equal to 0.25 mm are advantageously used so that they can be connected to printed circuit boards.
  • a contact surface is therefore to be understood as a surface that is created at the edge of a manufacturing process along the material thickness.
  • a contact element according to the invention thus falls into the “hermaphroditic” contact element category. This means that a contact element according to the invention can be brought into an electrically conductive connection with contact elements of the same or at least comparable design.
  • the special feature here is the unusual design of the flexible area. This is not determined by the thickness of the material, as is usual, but by the shape of the contact element. This means that the contact element does not, like conventional contact elements, deform elastically orthogonally to a plane which is essentially formed by the transport unit from which the contact element was formed. Instead, the contact element according to the invention is shaped in such a way that the contact element is essentially elastically deformed in this plane in order to establish contact with an at least similarly designed contact element.
  • At least one narrow side is processed with a mechanical, surface-treating process, at least along part of the contact surface.
  • the surface of the contact element has a lower surface roughness due to mechanical treatment.
  • the contact element is given a better defined or definable contact surface, at least in the treated areas.
  • the contact surface of the contact element with a contact element to be contacted is advantageously influenced by this lower surface roughness, so that the contact surfaces produce a defined and thus reliable contact with one another.
  • At least one narrow side of the contact element is processed by a forming process, at least along the contact area. Consequently, after the shaping process, for example stamping or lasering, a contact element is post-treated by a method such as rolling, pressing or similar methods in order to achieve the aforementioned defined contact surface. Particularly preferred here is the processing of at least one narrow side, at least along part of the contact surface, by the process of pressure polishing.
  • An alternative embodiment provides that at least one narrow side of the contact element is machined by a machining process, at least along the contact area. Due to the small size of the contacts according to the invention, the processes of grinding and/or vibratory grinding appear to be particularly suitable. Other machining processes are conceivable, provided that the The machines used have a sensible or suitably designed material intake.
  • the flexible area has a contact tip at the end arranged opposite the rigid area, the contact tip having a geometric deformation, in particular a curvature.
  • the contacting of the hermaphroditic contact elements can be determined even better by the defined, protruding contact tip. Arches in the shape of part circles are preferred here, but prominences with a substantially angular geometry are also conceivable and can possibly be used advantageously.
  • At least part of the contact tip is processed using a mechanical, surface-treating process. Comparable methods are conceivable here, as are provided for the contact surface.
  • At least part of the rigid area adjacent to the flexible area is provided with a recess.
  • This recess is arranged on the narrow side opposite the contact surface. This leaves the contact surface untouched, but increases the flexible area of the contact element. The insertion force of a plug connector with the contact element according to the invention can therefore be adjusted through this recess.
  • the rigid area has a soldering area at the end arranged opposite the flexible area.
  • This area can be designed for angled connectors in various embodiments. This enables a diverse use of the advantageous contact element according to the invention.
  • the rigid area and the soldering area are delimited from the rigid area by a projection. This projection can be formed as a stop or locking element.
  • a comparable lead is often referred to as a "harpoon”. This ensures that the contact element is securely seated in a housing of a printed circuit board connector.
  • FIG. 1 shows a perspective representation of a contact element according to the invention
  • FIG. 2 shows a perspective representation of an alternative contact element according to the invention
  • FIG. 3 shows a perspective representation of a further alternative contact element according to the invention.
  • FIG. 4 shows a sectional view of two connectors with contact elements according to the invention.
  • FIG. 1 shows an embodiment of a contact element 1 according to the invention.
  • the elaboration of the contact element 1 becomes clear.
  • the narrow sides 2 and 2 ' are opposite to each other, the narrow side 2 for contacting with a similar
  • Contact element 1' or 1" or an identical contact element 1 are provided. Furthermore, it can be seen that the contact element 1 is provided with a contact tip 3 which is formed on a flexible area 4 .
  • the flexible area 4 transitions into a rigid area 5 .
  • the rigid area in turn has an indentation 6 . Looking from the rigid area 5 to the indentation 6 , the indentation 6 is followed by a projection 7 used as a stop or latching hook, which basically separates the rigid area 5 from a soldering area 8 .
  • the indentation 6 enables a better definable expenditure of force during mechanical post-processing, for example pressure polishing.
  • the soldering area 8 is introduced into a printed circuit board with a contact spacing of 0.8 mm and is materially connected to a soldering pad.
  • the narrow side 2 also has the areas of contact surface 21 and contact tip 22 .
  • the contact tip 22 is associated with the contact tip 3 and is designed to make an electrically conductive connection with the contact surface 21 of a further contact element 1, 1' or 1''.
  • a similarly constructed contact element T is shown, which by an additional recess 9 along the narrow side 2 ! differs.
  • the flexible region 4 is lengthened by this recess 9 without reducing the contact surface 21 of the narrow side 2 .
  • This increases the flexibility of the contact element T. Accordingly, the rigid area 5' is shortened in comparison to the rigid area 5 shown in FIG.
  • the recess 9′ in the contact element 1′′ is maximized, and the rigid area 5′′ is correspondingly reduced to a minimum.
  • the flexible area 4 is improved in its flexibility, which has a direct effect on the insertion forces that occur during an insertion process from a “female” connector 10 to a “male” connector 11 .
  • FIG. 1 An exemplary use of a contact element 1 according to the invention is shown in FIG.
  • the previously mentioned “female” 10 and “male” connectors are each provided with two contact elements 1 .
  • the connectors 10 and 11 take the contacts 1 ideally in a form that the contours of the narrow side 2 ! can follow.
  • a recess 32 or 32' is provided, which enables the contacts 1 to deflect during the plugging process.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

The invention relates to an electric contact element for use in a printed circuit board plug connector. The contact element is formed with at least two opposing narrow faces and at least two opposing wide faces, and at least one narrow face is designed to be used as a contact surface in order to be brought into an electrically conductive connection with a counter contact element, wherein at least the contact surface of the contact element and of the counter contact element are designed to have identical structures, and the wide face has at least one rigid region and a flexible region.

Description

Kontaktelement für Leiterkartensteckverbinder Contact element for circuit board connectors
Beschreibung description
Die Erfindung geht aus von einem Kontaktelement für Leiterkartensteckverbinder nach der Gattung des unabhängigen Anspruchs 1 . The invention is based on a contact element for printed circuit board connectors according to the generic type of independent claim 1 .
Derartige Kontaktelemente sind dazu ausgelegt, mit grundsätzlich baugleichen Kontaktelementen eine elektrisch leitende Verbindung herzustellen. Oftmals werden solche Kontaktelemente als „hermaphroditisch“ bezeichnet, da sie mit sich selbst, bzw. baugleichen/ bauähnlichen Kontaktelementen verbindbar sind und Steckverbinder üblicherweise als „männlich“ und „weiblich“ benannt sind, wobei männliche und weibliche Kontaktelemente miteinander steckbar sind. Such contact elements are designed to produce an electrically conductive connection with contact elements that are basically identical in construction. Such contact elements are often referred to as "hermaphrodite" because they can be connected to themselves or to contact elements of the same/similar construction and connectors are usually named "male" and "female", whereby male and female contact elements can be plugged into one another.
Ein Vorteil hermaphroditischer Kontaktelemente besteht darin, dass sie im Gegensatz zu üblichen male-female Kontaktpaaren über eine verbesserte Signalintegrität verfügen. Bei hermaphroditischen Kontaktpaaren kann ein STUB Effekt verhindert werden, welcher durch auftretende Resonanzen Frequenzen und somit Datenraten negativ beeinträchtigt. Ein hermaphroditisches Kontaktpaar ist also im Wesentlichen zur Übertragung höherer Frequenzen/ Datenraten besser geeignet. An advantage of hermaphroditic contact elements is that they have improved signal integrity compared to standard male-female contact pairs. With hermaphroditic contact pairs, a STUB effect can be prevented, which negatively affects frequencies and thus data rates due to resonances that occur. Essentially, a hermaphroditic contact pair is better suited for transmitting higher frequencies/data rates.
Ein weiterer Vorteil besteht darin, dass ihr Design, je nach Steckverbinder, grundsätzlich nur einmal ausgearbeitet werden muss. So können sie bei der Fertigung in einer einzigen Bauform in doppelt hohen Stückzahlen hergestellt werden, vergleichen zu verschiedenartig ausgeführten Kontaktelementen. Another advantage is that, depending on the connector, their design only has to be worked out once. In this way, they can be manufactured in a single design in quantities that are twice as high compared to contact elements that are designed in different ways.
Stand der Technik State of the art
Die US 8,998,645 B2 zeigt ein elektrisches Verbindungssystem für elektrische Steckverbinder, bei denen die Kontakte sowohl für die männliche als auch für die weibliche Seite der Verbindung identisch sind. Die Kontakte sind in einer linearen Anordnung in einem dielektrischen Raster positioniert. Diese Anordnung führt zu einer kostengünstigen Konstruktion mit dem Potenzial für hohe elektronische Datenübertragung. US Pat. No. 8,998,645 B2 shows an electrical connection system for electrical connectors in which the contacts are identical for both the male and female sides of the connection. The contacts are positioned in a linear array in a dielectric grid. This arrangement results in a low cost design with the potential for high electronic data transmission.
Nachteilig an der vorgeschlagenen Ausführungsform ist zum einen der erhöhte Platzbedarf, insbesondere auf ihre Breite bezogen, sowie die begrenzte Regulierbarkeit der Steckkräfte, resultierend durch die Ausrichtung der Kontakte. Die Kontakte sind zur Kontaktierung mit den Breitseiten der Kontakte ausgelegt. Mit Breitseiten sind in diesem Fall die Seiten eines Kontaktes gemeint, welcher beispielsweise bei der Herstellung des Kontaktes aus einem Blech oder einem Coil aus dem Planen Bereich gefertigt sind, während die Schmalseiten als die Seiten zu verstehen sind, welche sich aus der Materialstärke des Bleches oder Coils ergeben. A disadvantage of the proposed embodiment is, on the one hand, the increased space requirement, in particular in relation to its width, and the limited adjustability of the insertion forces resulting from the alignment of the contacts. The contacts are designed to make contact with the broad sides of the contacts. In this case, the broad sides mean the sides of a contact, which, for example, are made from sheet metal or a coil from the plane area during the production of the contact, while the narrow sides are to be understood as the sides, which result from the material thickness of the sheet metal or result in coils.
Das Deutsche Patent- und Markenamt hat in der Prioritätsanmeldung zu vorliegender Anmeldung den folgenden Stand der Technik recherchiert: EP 2 026 417 A2, US 6,540,529 B1 , DE 198 09 881 A1 , WO 94/28599 A1 , DE 100 43 400 A1 und CH 260 408 A. The German Patent and Trademark Office has researched the following prior art in the priority application for the present application: EP 2 026 417 A2, US 6,540,529 B1, DE 198 09 881 A1, WO 94/28599 A1, DE 100 43 400 A1 and CH 260 408 A
Aufgabenstellung task
Die Aufgabe der Erfindung besteht darin, eine platzsparende, kostengünstige und dennoch sicher kontaktierende Alternative zu Kontaktelementen aus dem Stand der Technik anzubieten. The object of the invention is to offer a space-saving, cost-effective alternative to contact elements from the prior art which nevertheless provides reliable contact.
Die Aufgabe wird durch den Gegenstand der unabhängigen Ansprüche gelöst. The object is solved by the subject matter of the independent claims.
Die Erfindung geht aus von einem elektrischen Kontaktelement für den Einsatz in einem Leiterkartensteckverbinder, wobei das Kontaktelement mit zumindest zwei einander gegenüberliegende Schmalseiten, sowie zumindest zwei einander gegenüberliegende Breitseiten ausgeführt ist. Zumindest eine Schmalseite weist dabei zumindest eine Kontaktfläche und zumindest eine, an einer Kontaktspitze angeordnete Kontaktkuppe auf. Dabei ist die Kontaktfläche dazu ausgelegt, durch zumindest eine Kontaktkuppe eines zumindest im Wesentlichen baugleichen Kontaktelements in elektrisch leitende Verbindung gebracht zu werden. Die Kontaktkuppe des Kontaktelements wird ebenso mit der Kontaktfläche eines zumindest im Wesentlichen baugleichen Kontaktelements in elektrisch leitende Verbindung gebracht. Das Kontaktelement weist weiterhin zumindest einen starren Bereich und einen flexiblen Bereich aufweist. Als Schmalseite seien die Seiten zu verstehen welche sich durch die Materialstärke einer Transporteinheit ergeben, also beispielsweise die Materialstärke eines Coils, eines Blechs oder eines Bandes. Eine Breitseite ergibt sich also aus der Fertigungsart des Kontaktelementes, beispielsweise einem Laserschneidverfahren, einem Stanzverfahren oder anderen bekannten Verfahren. Für den Einsatz in Leiterkartensteckverbindern wird üblicherweise ein Material mit einer Stärke von kleinergleich 0,5 mm eingesetzt. Insbesondere Materialstärken von kleinergleich 0,25 mm sind vorteilhaft mit Leiterkarten verbindbar eingesetzt. Als Kontaktfläche ist demnach eine Fläche zu verstehen, welche an der Kante eines Fertigungsverfahrens entlang der Materialstärke entsteht. Ein erfindungsgemäßes Kontaktelement fällt also in die Kategorie „hermaphroditisches“ Kontaktelement. Damit ist gemeint, dass ein erfindungsgemäßes Kontaktelement mit Kontaktelementen gleicher oder zumindest vergleichbarer Ausführung in elektrisch leitende Verbindung bringbar ist. Die Besonderheit besteht hierbei in der unüblichen Ausbildung des flexiblen Bereichs. Dieser wird nicht, wie üblich, durch die Materialstärke vorgegeben, sondern durch die Ausformung des Kontaktelements. Damit ist gemeint, dass das Kontaktelement sich nicht, wie übliche Kontaktelemente, orthogonal zu einer Ebene elastisch verformen welche im Wesentlichen durch die Transporteinheit gebildet wird, aus der das Kontaktelement geformt wurde. Das erfindungsgemäße Kontaktelement ist stattdessen derart ausgeformt, dass das Kontaktelement im Wesentlichen elastisch in dieser Ebene verformt wird, um eine Kontaktierung mit einem zumindest ähnlich ausgeführten Kontaktelement herzustellen. The invention is based on an electrical contact element for use in a printed circuit board connector, the contact element being designed with at least two opposite narrow sides and at least two opposite broad sides. At least one narrow side has at least one contact surface and at least one contact tip arranged on a contact tip. In this case, the contact surface is designed to be brought into an electrically conductive connection by at least one contact tip of an at least essentially structurally identical contact element. The contact tip of the contact element is also brought into an electrically conductive connection with the contact surface of an at least essentially identical contact element. The contact element also has at least one rigid area and one flexible area. The narrow side is to be understood as meaning the sides that result from the material thickness of a transport unit, for example the material thickness of a coil, sheet metal or strip. A broad side therefore results from the type of production of the contact element, for example a laser cutting process, a stamping process or other known processes. For use in printed circuit board connectors, a material with a thickness of less than or equal to 0.5 mm is usually used. In particular, material thicknesses of less than or equal to 0.25 mm are advantageously used so that they can be connected to printed circuit boards. A contact surface is therefore to be understood as a surface that is created at the edge of a manufacturing process along the material thickness. A contact element according to the invention thus falls into the “hermaphroditic” contact element category. This means that a contact element according to the invention can be brought into an electrically conductive connection with contact elements of the same or at least comparable design. The special feature here is the unusual design of the flexible area. This is not determined by the thickness of the material, as is usual, but by the shape of the contact element. This means that the contact element does not, like conventional contact elements, deform elastically orthogonally to a plane which is essentially formed by the transport unit from which the contact element was formed. Instead, the contact element according to the invention is shaped in such a way that the contact element is essentially elastically deformed in this plane in order to establish contact with an at least similarly designed contact element.
In einer weiterführenden Ausführungsform ist zumindest eine Schmalseite zumindest entlang eines Teils der Kontaktfläche mit einem mechanischen, oberflächenbehandelnden Verfahren bearbeitet. Damit ist gemeint, dass die Oberfläche des Kontaktelements durch mechanische Behandlung eine geringere Oberflächenrauheit aufweist. Weiterhin ist damit gemeint, dass das Kontaktelement zumindest an den behandelten Bereichen eine besser definierte, bzw. definierbare Kontaktfläche erhält. Durch diese geringere Oberflächenrauheit wird die Kontaktfläche des Kontaktelements mit einem zu kontaktierenden Kontaktelement vorteilhaft beeinflusst, sodass die Kontaktflächen zueinander einen definierten und somit verlässlichen Kontakt herstellen. In a further embodiment, at least one narrow side is processed with a mechanical, surface-treating process, at least along part of the contact surface. This means that the surface of the contact element has a lower surface roughness due to mechanical treatment. Furthermore, this means that the contact element is given a better defined or definable contact surface, at least in the treated areas. The contact surface of the contact element with a contact element to be contacted is advantageously influenced by this lower surface roughness, so that the contact surfaces produce a defined and thus reliable contact with one another.
Eine Ausführungsform sieht vor, dass zumindest eine Schmalseite des Kontaktelements zumindest entlang des Kontaktbereiches durch ein Umformverfahren bearbeitet ist. Folglich wird ein Kontaktelement nach dem formgebenden Prozess, beispielsweise Stanzen oder Lasern, durch ein Verfahren wie Walzen, Pressen oder ähnlichen Verfahren nachbehandelt, um die zuvor genannte, definierte Kontaktfläche zu erwirken. Besonders bevorzugt ist hierbei die Bearbeitung zumindest einer Schmalseite zumindest entlang eines Teils der Kontaktfläche durch das Verfahren der Druckpolitur. One embodiment provides that at least one narrow side of the contact element is processed by a forming process, at least along the contact area. Consequently, after the shaping process, for example stamping or lasering, a contact element is post-treated by a method such as rolling, pressing or similar methods in order to achieve the aforementioned defined contact surface. Particularly preferred here is the processing of at least one narrow side, at least along part of the contact surface, by the process of pressure polishing.
Eine alternative Ausführungsform sieht vor, dass zumindest eine Schmalseite des Kontaktelements zumindest entlang des Kontaktbereiches durch ein zerspanendes Verfahren bearbeitet ist. Durch die geringe Baugröße der erfindungsgemäßen Kontakte scheinen besonders die Verfahren des Schleifens und/ oder Gleitschleifens geeignet. Weitere spanende Verfahren sind denkbar, sofern die eingesetzten Maschinen über eine sinnvolle, bzw. passend ausgelegte Materialaufnahme verfügen. An alternative embodiment provides that at least one narrow side of the contact element is machined by a machining process, at least along the contact area. Due to the small size of the contacts according to the invention, the processes of grinding and/or vibratory grinding appear to be particularly suitable. Other machining processes are conceivable, provided that the The machines used have a sensible or suitably designed material intake.
In einer vorteilhaften Ausführungsform weist der flexible Bereich an dem entgegengesetzt dem starren Bereich angeordneten Ende eine Kontaktspitze auf, wobei die Kontaktspitze eine geometrische Verformung, insbesondere eine Wölbung aufweist. Durch die definierte, hervorstehende Kontaktspitze lässt sich die Kontaktierung der hermaphroditischen Kontaktelemente nochmals besser bestimmen. Bevorzugt sind hierbei teilkreisförmige Wölbungen, jedoch auch Hervorhebungen mit im Wesentlichen kantiger Geometrie sind denkbar und können möglicherweise vorteilhaft eingesetzt werden. In an advantageous embodiment, the flexible area has a contact tip at the end arranged opposite the rigid area, the contact tip having a geometric deformation, in particular a curvature. The contacting of the hermaphroditic contact elements can be determined even better by the defined, protruding contact tip. Arches in the shape of part circles are preferred here, but prominences with a substantially angular geometry are also conceivable and can possibly be used advantageously.
In einer weiterentwickelten Ausführungsform wird zumindest ein Teil der Kontaktspitze mit einem mechanischen, oberflächenbehandelnden Verfahren bearbeitet. Hierbei sind vergleichbare Verfahren denkbar, wie sie für die Kontaktfläche vorgesehen sind. In a further developed embodiment, at least part of the contact tip is processed using a mechanical, surface-treating process. Comparable methods are conceivable here, as are provided for the contact surface.
In einer Ausführungsform wird zumindest ein Teil des an dem flexiblen Bereich angrenzenden starren Bereichs mit einer Aussparung versehen. Diese Aussparung wird an der der Kontaktfläche gegenüberliegenden Schmalseite angeordnet. Dadurch bleibt die Kontaktfläche unberührt, der flexible Bereich des Kontaktelements wird jedoch vergrößert. Durch diese Aussparung kann also die Steckkraft eines Steckverbinders mit dem erfindungsgemäßen Kontaktelement angepasst werden. In one embodiment, at least part of the rigid area adjacent to the flexible area is provided with a recess. This recess is arranged on the narrow side opposite the contact surface. This leaves the contact surface untouched, but increases the flexible area of the contact element. The insertion force of a plug connector with the contact element according to the invention can therefore be adjusted through this recess.
Eine sinnvolle Ausführungsform sieht vor, dass der starre Bereich an dem entgegengesetzt dem flexiblen Bereich angeordneten Ende einen Lötbereich aufweist. Dieser Bereich kann für gewinkelte Steckverbinder in verschiedenartigen Ausführungsformen ausgeführt sein. Dadurch wird ein vielfältiger Einsatz des vorteilhaften, erfindungsgemäßen Kontaktelements ermöglicht. ln einer geschickten Ausführungsform sind der starre Bereich und der Lötbereich durch einen Vorsprung von dem starren Bereich abgegrenzt. Dieser Vorsprung kann ais Anschiag oder Rasteiement ausgeformt sein. Im Bereich von Elektroniksteckverbindern ist ein vergleichbarer Vorsprung oft als „Harpune“ betitelt. Diese sorgt für einen sicheren Sitz des Kontaktelements in einem Gehäuse eines Leiterkartensteckverbinders. A useful embodiment provides that the rigid area has a soldering area at the end arranged opposite the flexible area. This area can be designed for angled connectors in various embodiments. This enables a diverse use of the advantageous contact element according to the invention. In a clever embodiment, the rigid area and the soldering area are delimited from the rigid area by a projection. This projection can be formed as a stop or locking element. In the field of electronic connectors, a comparable lead is often referred to as a "harpoon". This ensures that the contact element is securely seated in a housing of a printed circuit board connector.
Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen und der folgenden Beschreibung angegeben. Advantageous configurations of the invention are specified in the dependent claims and the following description.
Ausführungsbeispiel example
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im Folgenden näher erläutert. Es zeigen: An embodiment of the invention is shown in the drawings and is explained in more detail below. Show it:
Fig. 1 eine perspektivische Darstellung eines erfindungsgemäßen Kontaktelements; 1 shows a perspective representation of a contact element according to the invention;
Fig. 2 eine perspektivische Darstellung eines alternativen, erfindungsgemäßen Kontaktelements; 2 shows a perspective representation of an alternative contact element according to the invention;
Fig. 3 eine perspektivische Darstellung eines weiteren, alternativen, erfindungsgemäßen Kontaktelements; 3 shows a perspective representation of a further alternative contact element according to the invention;
Fig. 4 eine Schnittdarstellung zweier Steckverbinder mit erfindungsgemäßen Kontaktelementen. 4 shows a sectional view of two connectors with contact elements according to the invention.
Die Figuren enthalten teilweise vereinfachte, schematische Darstellungen. Zum Teil werden für gleiche, aber gegebenenfalls nicht identische Elemente identische Bezugszeichen verwendet. Verschiedene Ansichten gleicher Elemente könnten unterschiedlich skaliert sein. The figures contain partially simplified, schematic representations. In some cases, identical reference symbols are used for the same but possibly not identical elements. Different views of the same elements could be scaled differently.
Richtungsangaben wie „oben“, „unten“, „links“, „rechts“, „vorne“ und „hinten“ beziehen sich auf die jeweiligen Darstellungen und können in Bezug auf die dargestellten Elemente variieren. Die Figur 1 zeigt eine erfindungsqemäße Ausführunqsform eines Kontaktelements 1. Dabei wird die Ausarbeitung des Kontaktelements 1 deutlich. Die Schmalseiten 2 und 2‘ liegen einander gegenüber, wobei die Schmalseite 2 für die Kontaktierung mit einem ähnlichenDirections such as "up", "down", "left", "right", "front" and "back" refer to the respective illustrations and may vary in relation to the elements shown. FIG. 1 shows an embodiment of a contact element 1 according to the invention. The elaboration of the contact element 1 becomes clear. The narrow sides 2 and 2 'are opposite to each other, the narrow side 2 for contacting with a similar
Kontaktelement 1 ‘ oder 1“ oder einem identischen Kontaktelement 1 vorgesehen sind. Weiterhin ist zu erkennen, dass das Kontaktelement 1 mit einer Kontaktspitze 3 versehen ist, welche an einem flexiblen Bereich 4 angeformt ist. Der flexible Bereich 4 geht in einen starren Bereich 5 über. Der starre Bereich wiederum weist eine Einwölbung 6 auf. Von dem starren Bereich 5 zur Einwölbung 6 blickend folgt auf die Einwölbung 6 ein als Anschlag, beziehungsweise Rasthaken genutzter Vorsprung 7, welcher grundsätzlich den starren Bereich 5 von einem Lötbereich 8 trennt. Die Einwölbung 6 ermöglicht einen besser definierbaren Kraftaufwand bei einer mechanischen Nachbearbeitung, beispielsweise dem Druckpolieren. Der Lötbereich 8 wird erfindungsgemäß in eine Leiterkarte mit 0,8 mm Kontaktabstand eingebracht und auf einem Lötpad stoffschlüssig verbunden. Die Schmalseite 2 weist weiterhin in die Bereiche Kontaktfläche 21 und Kontaktkuppe 22 auf. Dabei ist die Kontaktkuppe 22 der Kontaktspitze 3 zugeordnet und dazu ausgelegt, mit der Kontaktfläche 21 eines weiteren Kontaktelements 1 , 1 ‘ oder 1“ in elektrisch leitende Verbindung zu treten. Contact element 1' or 1" or an identical contact element 1 are provided. Furthermore, it can be seen that the contact element 1 is provided with a contact tip 3 which is formed on a flexible area 4 . The flexible area 4 transitions into a rigid area 5 . The rigid area in turn has an indentation 6 . Looking from the rigid area 5 to the indentation 6 , the indentation 6 is followed by a projection 7 used as a stop or latching hook, which basically separates the rigid area 5 from a soldering area 8 . The indentation 6 enables a better definable expenditure of force during mechanical post-processing, for example pressure polishing. According to the invention, the soldering area 8 is introduced into a printed circuit board with a contact spacing of 0.8 mm and is materially connected to a soldering pad. The narrow side 2 also has the areas of contact surface 21 and contact tip 22 . The contact tip 22 is associated with the contact tip 3 and is designed to make an electrically conductive connection with the contact surface 21 of a further contact element 1, 1' or 1''.
In der Figur 2 wird ein ähnlich aufgebautes Kontaktelement T gezeigt, welches sich durch eine zusätzliche Aussparung 9 entlang der Schmalseite 2! unterscheidet. Durch diese Aussparung 9 wird der flexible Bereichs 4 verlängert, ohne die Kontaktfläche 21 der Schmalseite 2 zu verringern. Hierdurch wird die Flexibilität des Kontaktelements T erhöht. Dementsprechend ist der starre Bereich 5‘ im Vergleich zur dem in Figur 1 gezeigten starren Bereich 5 verkürzt. In the figure 2, a similarly constructed contact element T is shown, which by an additional recess 9 along the narrow side 2 ! differs. The flexible region 4 is lengthened by this recess 9 without reducing the contact surface 21 of the narrow side 2 . This increases the flexibility of the contact element T. Accordingly, the rigid area 5' is shortened in comparison to the rigid area 5 shown in FIG.
In der Figur 3 ist die Aussparung 9‘ in dem Kontaktelement 1“ maximiert, entsprechend ist der starre Bereich 5“ auf ein Minimum reduziert. Dadurch ist der flexible Bereich 4 in seiner Flexibilität verbessert, was sich direkt auf die Steckkräfte auswirkt, die während eines Steckvorgangs von einem Steckverbinder „weiblich“ 10 mit einem Steckverbinder „männliche“ 11 auftreten. In FIG. 3, the recess 9′ in the contact element 1″ is maximized, and the rigid area 5″ is correspondingly reduced to a minimum. Through this the flexible area 4 is improved in its flexibility, which has a direct effect on the insertion forces that occur during an insertion process from a “female” connector 10 to a “male” connector 11 .
Ein beispielhafter Einsatz eines erfindungsgemäßen Kontaktelements 1 ist in der Figur 4 dargestellt. Die zuvor erwähnten Steckverbinder „weiblich“ 10 und Steckverbinder „männlich“ sind mit jeweils zwei Kontaktelementen 1 versehen. Die Steckverbinder 10 und 11 nehmen die Kontakte 1 idealerweise in einer Form auf, welche den Konturen der Schmalseite 2! folgen kann. Im Bereich der Kontaktspitze 3 wird eine Ausnehmung 32, bzw. 32' vorgesehen, wodurch ein Einfedern der Kontakte 1 während des Steckvorgangs ermöglicht wird. An exemplary use of a contact element 1 according to the invention is shown in FIG. The previously mentioned “female” 10 and “male” connectors are each provided with two contact elements 1 . The connectors 10 and 11 take the contacts 1 ideally in a form that the contours of the narrow side 2 ! can follow. In the area of the contact tip 3, a recess 32 or 32' is provided, which enables the contacts 1 to deflect during the plugging process.
Auch wenn in den Figuren verschiedene Aspekte oder Merkmale der Erfindung jeweils in Kombination gezeigt sind, ist für den Fachmann - soweit nicht anders angegeben - ersichtlich, dass die dargestellten und diskutierten Kombinationen nicht die einzig möglichen sind. Insbesondere können einander entsprechende Einheiten oder Merkmalskomplexe aus unterschiedlichen Ausführungsbeispielen miteinander ausgetauscht werden. Even if different aspects or features of the invention are shown in combination in the figures, it is obvious to the person skilled in the art--unless stated otherwise--that the combinations shown and discussed are not the only possible ones. In particular, mutually corresponding units or complexes of features from different exemplary embodiments can be exchanged with one another.
Kontaktelement für Leiterkartensteckverbinder Contact element for circuit board connectors
Bezugszeichenliste Reference List
Kontaktelement contact element
Schmalseite narrow side
Kontaktspitze flexibler Bereich starrer Bereich Contact tip flexible area rigid area
Einwölbung indentation
Vorsprung head Start
Lötbereich soldering area
Aussparung recess
Steckverbinder „weiblich“ Connector "female"
Steckverbinder „männlich“ Connector "male"
Kontaktfläche contact surface
Kontaktkuppe contact tip
Steckverbindergehäuse connector housing
Ausnehmung recess

Claims

Kontaktelement für Leiterkartensteckverbinder Contact element for circuit board connectors
Ansprüche Elektrisches Kontaktelement (1 ) für den Einsatz in einem Leiterkartensteckverbinder, wobei das Kontaktelement (1 ) mit zumindest zwei einander gegenüberliegende Schmalseiten (2, 2‘), sowie zumindest zwei einander gegenüberliegende Breitseiten ausgeführt ist, wobei zumindest eine Schmalseite (2) zumindest eine Kontaktfläche (21 ) und zumindest eine, an einer Kontaktspitze (3) angeordnete Kontaktkuppe (22) aufweist, dadurch gekennzeichnet, dass die Kontaktfläche (21 ) dazu ausgelegt ist, durch zumindest eine Kontaktkuppe (22) eines zumindest im Wesentlichen baugleichen Kontaktelements (1 , 1 ‘ oder 1“) in elektrisch leitende Verbindung gebracht zu werden, wobei die Kontaktkuppe (22) dazu ausgelegt ist, die Kontaktfläche (21 ) eines zumindest im Wesentlichen baugleichen Kontaktelements (1 , 1 ! oder 1“) elektrisch leitend zu kontaktieren und wobei das Kontaktelement (1 ) zumindest einen starren Bereich (5) und einen flexiblen Bereich (4) aufweist, Elektrisches Kontaktelement (1 ) nach Anspruch 1 dadurch gekennzeichnet, dass zumindest eine Schmalseite (2) zumindest entlang eines Teils der Kontaktfläche (21 ) mit einem mechanischen, oberflächenbehandelnden Verfahren bearbeitet ist. Elektrisches Kontaktelement (1 ) nach Anspruch 2 dadurch gekennzeichnet, dass zumindest eine Schmalseite (2) zumindest entlang eines Teils der Kontaktfläche (21 ) durch ein Umformverfahren bearbeitet ist. Elektrisches Kontaktelement (1 ) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass zumindest eine Schmalseite (2) zumindest entlang eines Teils der Kontaktfläche (21 ) durch Druckpolitur bearbeitet ist. Elektrisches Kontaktelement (1 ) nach einem der vorstehenden Ansprüche dadurch gekennzeichnet, dass zumindest eine Schmalseite (2) zumindest entlang eines Teils der Kontaktfläche (21 ) durch ein zerspanendes Verfahren bearbeitet ist. Elektrisches Kontaktelement (1 ) nach einem der vorstehenden Ansprüche dadurch gekennzeichnet, dass die Kontaktspitze (3) eine geometrische Verformung, insbesondere eine Wölbung aufweist. Elektrisches Kontaktelement (1 ) nach einem der vorstehenden Ansprüche dadurch gekennzeichnet, dass zumindest ein Teil der Kontaktspitze (3) mit einem mechanischen, oberflächenbehandelnden Verfahren bearbeitet ist. Elektrisches Kontaktelement (1 ) nach einem der vorstehenden Ansprüche dadurch gekennzeichnet, dass der starre Bereich (5) mit einer Aussparung (9) versehen ist, wodurch der flexible Bereich (4) verlängert wird. Elektrisches Kontaktelement (1 ) nach einem der vorstehenden Ansprüche dadurch gekennzeichnet, dass der starre Bereich (5) an dem entgegengesetzt dem flexiblen Bereich (4) angeordneten Ende einen Lötbereich (8) aufweist. Elektrisches Kontaktelement (1 ) nach einem der vorstehendenClaims Electrical contact element (1) for use in a circuit card connector, the contact element (1) having at least two opposite narrow sides (2, 2') and at least two opposite broad sides, with at least one narrow side (2) having at least one Contact surface (21) and at least one contact tip (22) arranged on a contact tip (3), characterized in that the contact surface (21) is designed to be replaced by at least one contact tip (22) of an at least essentially structurally identical contact element (1, 1 'or 1") to be brought into an electrically conductive connection, the contact tip (22) being designed to contact the contact surface (21) of an at least essentially structurally identical contact element (1, 1 ! or 1") in an electrically conductive manner and wherein the contact element (1) has at least one rigid area (5) and one flexible area (4), electrical contact element (1 ) according to claim 1, characterized in that at least one narrow side (2) is processed at least along part of the contact surface (21) with a mechanical, surface-treating process. Electrical contact element (1) according to claim 2, characterized in that at least one narrow side (2) is processed at least along part of the contact surface (21) by a forming process. Electrical contact element (1) according to one of the preceding claims, characterized in that at least one narrow side (2) is processed at least along part of the contact surface (21) by pressure polishing. Electrical contact element (1) according to one of the preceding claims, characterized in that at least one narrow side (2) is processed at least along part of the contact surface (21) by a machining process. Electrical contact element (1) according to one of the preceding claims, characterized in that the contact tip (3) has a geometric deformation, in particular a curvature. Electrical contact element (1) according to one of the preceding claims, characterized in that at least part of the contact tip (3) is processed with a mechanical, surface-treating process. Electrical contact element (1) according to one of the preceding claims, characterized in that the rigid area (5) is provided with a recess (9), whereby the flexible area (4) is extended. Electrical contact element (1) according to one of the preceding claims, characterized in that the rigid area (5) on the opposite to the flexible area (4) arranged end has a soldering area (8). Electrical contact element (1) according to one of the preceding
Ansprüche dadurch gekennzeichnet, dass der starre Bereich (5) durch einen Vorsprung (7) von dem Lötbereich (8) abgegrenzt ist. Claims characterized in that the rigid area (5) is delimited from the soldering area (8) by a projection (7).
EP21791249.2A 2020-09-29 2021-09-27 Contact element for printed circuit board plug connector Pending EP4222820A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102020125437 2020-09-29
DE102020134330.2A DE102020134330A1 (en) 2020-09-29 2020-12-21 Contact element for circuit board connectors
PCT/DE2021/100780 WO2022068996A1 (en) 2020-09-29 2021-09-27 Contact element for printed circuit board plug connector

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EP4222820A1 true EP4222820A1 (en) 2023-08-09

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EP21791249.2A Pending EP4222820A1 (en) 2020-09-29 2021-09-27 Contact element for printed circuit board plug connector

Country Status (6)

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US (1) US20240030641A1 (en)
EP (1) EP4222820A1 (en)
KR (1) KR20230074787A (en)
CN (1) CN116235367A (en)
DE (1) DE102020134330A1 (en)
WO (1) WO2022068996A1 (en)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2591437A (en) 1946-12-21 1952-04-01 Jun Erik Haugsrud Coupling device for electric cables
JPH0249373A (en) * 1989-07-13 1990-02-19 Keru Kk Contact
JP2582876Y2 (en) 1993-05-20 1998-10-15 バーグ・テクノロジー・インコーポレーテッド Electrical connector
JPH07118342B2 (en) * 1993-11-01 1995-12-18 ケル株式会社 Two piece connector
JPH0973959A (en) * 1995-09-05 1997-03-18 Fujitsu Takamizawa Component Kk Connector with low height, manufacture of the connector, and connection method for printed circuit board
DE19809881C2 (en) 1998-03-07 2002-12-05 Erni Elektroapp Electrical connector
DE10043400A1 (en) 2000-09-04 2002-03-14 Abb Low Vollage Power Ag Lenzb Surface treated contact finger for plug contact has first surface treated contact surfaces for contacting counter contact piece, second surface treated surfaces for contacting contact plate
TW520101U (en) 2002-01-16 2003-02-01 Hon Hai Prec Ind Co Ltd Electrical connector component
JP4190019B2 (en) * 2006-09-12 2008-12-03 日本航空電子工業株式会社 connector
DE102007038221B3 (en) 2007-08-13 2008-10-16 Erni Electronics Gmbh Electrical plug connector, has concave recess, where shape of concave recess is adapted to convex protruding molding such that convex protruding molding of plug connector lies partly positively against concave recess of another connector
US8998645B2 (en) 2011-10-21 2015-04-07 Ohio Associated Enterprises, Llc Hermaphroditic interconnect system

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US20240030641A1 (en) 2024-01-25
CN116235367A (en) 2023-06-06
WO2022068996A1 (en) 2022-04-07
KR20230074787A (en) 2023-05-31

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