EP0872921A2 - Contact arrangement for a printed circuit board - Google Patents

Contact arrangement for a printed circuit board Download PDF

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Publication number
EP0872921A2
EP0872921A2 EP98106265A EP98106265A EP0872921A2 EP 0872921 A2 EP0872921 A2 EP 0872921A2 EP 98106265 A EP98106265 A EP 98106265A EP 98106265 A EP98106265 A EP 98106265A EP 0872921 A2 EP0872921 A2 EP 0872921A2
Authority
EP
European Patent Office
Prior art keywords
contact
circuit board
leg
spring
printed circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98106265A
Other languages
German (de)
French (fr)
Other versions
EP0872921B1 (en
EP0872921A3 (en
Inventor
Hartmut Dipl.-Ing. Schumacher
Josef Dipl.-Ing. Scherl
Bernhard Hiltl
Reinhard Dipl.-Ing. Herdegen
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0872921A2 publication Critical patent/EP0872921A2/en
Publication of EP0872921A3 publication Critical patent/EP0872921A3/en
Application granted granted Critical
Publication of EP0872921B1 publication Critical patent/EP0872921B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5805—Connections to printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5805—Connections to printed circuits
    • H01H2001/5811—Connections to printed circuits both fixed and movable contacts being formed by blank stamping and mounted or soldered on printed circuit board without any other housing elements

Definitions

  • the invention relates to a contact device for a circuit board, with a resilient in the direction of actuation Contact and a counter contact.
  • a generic contact device belongs to the state of the Technology. It is a common embodiment of how to Included in delivery of various manufacturers. These well-known commercially available soldering elements and miniature switching contacts for However, printed circuit boards either have a low over-stroke compensation or they are in their with a large overstroke Dimensions relatively large. The used here Contacts are complex and proportionate expensive.
  • the invention has for its object a contact device of the above kind to create a big one Over-stroke compensation enables and a relatively small Installation space required.
  • a contact device at the contact is designed as a flexible contact spring is that a first resilient leg with a Has contact surface and a second leg, which in Direction of actuation to the first leg resilient is compliant.
  • the contact device designed in this way is also advantageous because it does not have a separate back pressure spring requires and a certain self-cleaning effect of Contact surfaces takes place, since this one when pressed experience small sliding movement.
  • the contact spring one for Has soldering provided with the printed circuit board, on which a rag to relieve the solder joint on the PCB is sheared. This represents an inexpensive one Version in which no housing is required for fixing and is still sufficiently stable attachment.
  • Reliable contacting of the contact surface with the Mating contact is achieved when the contact spring is in the area the contact surface is slotted, resulting in double contact leads.
  • the contact spring 1 shows a contact spring 1 of a contact device according to the invention shown for printed circuit boards.
  • the contact spring 1 is flexible with a first resilient Leg 2, with a contact surface 3 and with a second Leg 4 executed, the first in the direction of actuation Leg 2 is resiliently flexible.
  • the contact spring 1 is slotted.
  • the contact spring 1 has a Soldering area on which a tab 5 to relieve the solder joint is sheared on the circuit board.
  • the contact spring 1 is made in one piece, the connection between the first 2 and the second leg 4 a relative has a large bending radius, which is the deflection of the second Leg 4 to the first leg 2 allows. To this A large overstroke can also be compensated for in this way.
  • Figure 3 is a contact spring 1 for a horizontal installation position shown, the leg 2 almost perpendicular at the end is bent.
  • FIG. 4 shows an embodiment according to the invention of an in a circuit board 6 contacted contact device in a lying position Installation position.
  • This contact device differs differs from the previously described in accordance with FIG. 2 in particular by performing the counter contact, which here by two Contact pads 9 is realized. Otherwise corresponds to Structure and function of the contact device of the previous Embodiment described in the standing installation position according to FIG 2, so that to avoid repetitions on a repeated description is omitted here.

Abstract

The contact device has a contact (1) which is spring biased in an operating direction (8) and a counter-contact (7). The contact is provided by a curved springy contact with a spring contact arm (2) having a curved contact surface (3) and a second arm (4) bent towards the spring contact arm in the operating direction. The contact is secured to the surface of the circuit board at its end and cooperates with a contact pin or contact pad, attached to the circuit board, acting as the counter-contact.

Description

Die Erfindung bezieht sich auf eine Kontakteinrichtung für eine Leiterplatte, mit einem in Betätigungsrichtung federnden Kontakt und einem Gegenkontakt.The invention relates to a contact device for a circuit board, with a resilient in the direction of actuation Contact and a counter contact.

Eine gattungsgemäße Kontakteinrichtung gehört zum Stand der Technik. Es ist eine gängige Ausführungsform wie sie zum Lieferumfang verschiedener Hersteller gehört. Diese bekannten handelsüblichen Einlötelemente und Miniaturschaltkontakte für Leiterplatten haben allerdings entweder einen geringen Über-hubausgleich oder sie sind bei größerem Überhub in ihren Abmessungen verhältnismäßig groß. Die hierbei verwendeten Kontakte sind kompliziert aufgebaut und verhältnismäßig teuer.A generic contact device belongs to the state of the Technology. It is a common embodiment of how to Included in delivery of various manufacturers. These well-known commercially available soldering elements and miniature switching contacts for However, printed circuit boards either have a low over-stroke compensation or they are in their with a large overstroke Dimensions relatively large. The used here Contacts are complex and proportionate expensive.

Der Erfindung liegt die Aufgabe zugrunde, eine Kontakteinrichtung der obengenannten Art zu schaffen, die einen großen Überhubausgleich ermöglicht und einen verhältnismäßig kleinen Einbauraum benötigt.The invention has for its object a contact device of the above kind to create a big one Over-stroke compensation enables and a relatively small Installation space required.

Die Aufgabe wird gelöst durch eine Kontakteinrichtung, bei der der Kontakt als biegeelastische Kontaktfeder ausgeführt ist, die einen ersten federelastischen Schenkel mit einer Kontaktfläche und einen zweiten Schenkel aufweist, der in Betätigungsrichtung zum ersten Schenkel hin federelastisch nachgiebig ist. Die derart ausgebildetet Kontakteinrichtung ist außerdem vorteilhaft, weil sie keine separate Rückdruckfeder erfordert und ein gewisser Selbstreinigungseffekt der Kontaktflächen stattfindet, da diese beim Betätigen eine kleine Schiebebewegung erfahren. The task is solved by a contact device at the contact is designed as a flexible contact spring is that a first resilient leg with a Has contact surface and a second leg, which in Direction of actuation to the first leg resilient is compliant. The contact device designed in this way is also advantageous because it does not have a separate back pressure spring requires and a certain self-cleaning effect of Contact surfaces takes place, since this one when pressed experience small sliding movement.

Weiterhin ist es vorteilhaft, wenn die Kontaktfeder einen zur Verlötung mit der Leiterplatte vorgesehenen Lötbereich aufweist, an dem ein Lappen zur Entlastung der Lötstelle auf der Leiterplatte ausgeschert ist. Dies stellt eine kostengünstige Ausführung dar, bei der zur Fixierung kein Gehäuse benötigt wird und dennoch eine ausreichend stabile Befestigung erfolgt.Furthermore, it is advantageous if the contact spring one for Has soldering provided with the printed circuit board, on which a rag to relieve the solder joint on the PCB is sheared. This represents an inexpensive one Version in which no housing is required for fixing and is still sufficiently stable attachment.

Eine zuverlässige Kontaktierung der Kontaktfläche mit dem Gegenkontakt wird erreicht, wenn die Kontaktfeder im Bereich der Kontaktfläche geschlitzt ist, was zu einer Doppelkontaktgabe führt.Reliable contacting of the contact surface with the Mating contact is achieved when the contact spring is in the area the contact surface is slotted, resulting in double contact leads.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Further advantageous embodiments of the invention are the See subclaims.

Ein Ausfuhrungsbeispiel der Erfindung wird im folgenden anhand einer Zeichnung näher erläutert. Es zeigen:

FIG 1
eine perspektivische Ansicht einer erfindungsgemäßen Kontaktfeder für eine stehende Einbaulage,
FIG 2
eine in einer Leiterplatte montierte Kontakteinrichtung in stehender Einbaulage,
FIG 3
eine perspektivische Ansicht einer Kontaktfeder für liegenden Einbaulage und
FIG 4
eine in einer Leiterplatte montierte Kontakteinrichtung in liegender Einbaulage.
An exemplary embodiment of the invention is explained in more detail below with reference to a drawing. Show it:
FIG. 1
2 shows a perspective view of a contact spring according to the invention for a standing installation position,
FIG 2
a contact device mounted in a printed circuit board in a standing installation position,
FIG 3
a perspective view of a contact spring for lying installation position and
FIG 4
a contact device mounted in a printed circuit board in the horizontal installation position.

In FIG 1 ist eine Kontaktfeder 1 einer erfindungsgemäßen Kontakteinrichtung für Leiterplatten dargestellt. Die Kontaktfeder 1 ist biegeelastisch mit einem ersten federelastischen Schenkel 2, mit einer Kontaktfläche 3 und mit einem zweiten Schenkel 4 ausgeführt, der in Betätigungsrichtung zum ersten Schenkel 2 hin federelastisch nachgiebig ist. Im Bereich der Kontaktfläche 3 ist die Kontaktfeder 1 geschlitzt. Zur Verlötung mit einer Leiterplatte weist die Kontaktfeder 1 einen Lötbereich auf, an dem ein Lappen 5 zur Entlastung der Lötstelle auf der Leiterplatte ausgeschert ist. Die Kontaktfeder 1 ist einstückig ausgeführt, wobei die Verbindung zwischen dem ersten 2 und dem zweiten Schenkel 4 einen verhältnismäßig großen Biegeradius besitzt, der die Durchfederung des zweiten Schenkels 4 zum ersten Schenkel 2 hin ermöglicht. Auf diese Weise kann auch ein großer Überhub ausgeglichen werden.1 shows a contact spring 1 of a contact device according to the invention shown for printed circuit boards. The contact spring 1 is flexible with a first resilient Leg 2, with a contact surface 3 and with a second Leg 4 executed, the first in the direction of actuation Leg 2 is resiliently flexible. In the field of Contact surface 3, the contact spring 1 is slotted. For soldering with a circuit board, the contact spring 1 has a Soldering area on which a tab 5 to relieve the solder joint is sheared on the circuit board. The contact spring 1 is made in one piece, the connection between the first 2 and the second leg 4 a relative has a large bending radius, which is the deflection of the second Leg 4 to the first leg 2 allows. To this A large overstroke can also be compensated for in this way.

FIG 2 zeigt eine in einer Leiterplatte 6 eingebaute erfindungsgemäße Kontakteinrichtung in stehender Einbaulage. Hier ist die zuvor beschriebene Kontaktfeder 1 stehend in die Leiterplatte 6 eingebaut. Der Lappen 5 der Kontaktfeder 1 stützt sich an der Leiterplatte 6 ab und gewährleistet somit eine stabile Halterung der Kontaktfeder 1 an der Leiterplatte 6. Der zur Kontakteinrichtung zugehörige Gegenkontakt ist hier in Form zweiter Lötstifte 7 realisiert, die in der Leiterplatte 6 eingelötet sind und in die Nähe der geschlitzten Kontaktfläche 3 reichen. Bei Betätigung der Kontakteinrichtung über den zweiten Schenkel 4 gemäß der dem Pfeil 8 angezeigten Richtung wird die Kontaktfeder 1 durch Verbiegung des ersten federelastischen Schenkels 2 zur Kontaktierung seiner Kontaktfläche 3 mit den Lötstiften 7 gebracht. Nach erfolgter Kontaktierung wird bei Überhub der zweite Schenkel 4 infolge der Verbindung mit dem großen Biegeradius zum ersten federelastischen Schenkel 2 hin durchgedrückt. Der Abstand beider Schenkel 2 und 4 kann weitgehend zum Ausgleich eines Überhubs ausgenutzt werden.2 shows an inventive circuit board 6 installed Contact device in a standing installation position. Here is the previously described contact spring 1 standing in the circuit board 6 installed. The tab 5 of the contact spring 1 supports itself on the circuit board 6 and thus ensures a stable mounting of the contact spring 1 on the printed circuit board 6. The mating contact associated with the contact device is here realized in the form of second solder pins 7, which are in the circuit board 6 are soldered and close to the slotted Contact area 3 is sufficient. When the contact device is actuated over the second leg 4 according to the arrow 8 indicated Direction, the contact spring 1 by bending the first resilient leg 2 for contacting his Brought contact surface 3 with the solder pins 7. After done In the event of overstroke, contact is made with the second leg 4 as a result the connection with the large bending radius to the first spring elastic Leg 2 pushed through. The distance between the two Legs 2 and 4 can largely compensate for an overstroke be exploited.

In FIG 3 ist eine Kontaktfeder 1 für eine liegende Einbaulage dargestellt, wobei der Schenkel 2 endseitig nahezu rechtwinklig umgebogen ist. In Figure 3 is a contact spring 1 for a horizontal installation position shown, the leg 2 almost perpendicular at the end is bent.

FIG 4 zeigt eine erfindungsgemäße Ausführungsform einer in einer Leiterplatte 6 kontaktierten Kontakteinrichtung in liegender Einbaulage. Diese Kontakteinrichtung unterscheidet sich von der zuvor beschriebenen gemäß FIG 2 insbesondere durch die Ausführung des Gegenkontakts, der hier durch zwei Kontaktpads 9 realisiert ist. Im übrigen entspricht der Aufbau und die Funktion der Kontakteinrichtung der zuvor beschriebenen Ausführungsform in stehender Einbaulage gemäß FIG 2, so daß zur Vermeidung von Wiederholungen auf eine nochmalige Beschreibung hier verzichtet wird.4 shows an embodiment according to the invention of an in a circuit board 6 contacted contact device in a lying position Installation position. This contact device differs differs from the previously described in accordance with FIG. 2 in particular by performing the counter contact, which here by two Contact pads 9 is realized. Otherwise corresponds to Structure and function of the contact device of the previous Embodiment described in the standing installation position according to FIG 2, so that to avoid repetitions on a repeated description is omitted here.

Obwohl die vorliegende Erfindung unter Bezugnahme auf die in der beigefügten Zeichnung dargestellte Ausführungsform erläutert ist, sollte berücksichtigt werden, daß damit nicht beabsichtigt ist, die Erfindung nur auf die dargestellte Ausführungsform zu beschränken, sondern alle möglichen Änderungen, Modifizierungen und äquivalente Anordnungen, soweit sie vom Inhalt der Patentansprüche gedeckt sind, einzuschließen.Although the present invention with reference to the in of the accompanying drawing illustrated embodiment is, it should be borne in mind that this is not intended is, the invention only to the illustrated embodiment to limit, but all possible changes, Modifications and equivalent arrangements insofar as they are from Contents of the claims are covered.

Claims (6)

Kontakteinrichtung für eine Leiterplatte (6), mit einem in Betätigungsrichtung (8) federnden Kontakt (1) und einem Gegenkontakt (7,9), dadurch gekennzeichnet, daß der Kontakt als biegeelastische Kontaktfeder (1) ausgeführt ist, die einen ersten federelastischen Schenkel (2) mit einer Kontaktfläche (3) und einen zweiten Schenkel (4) aufweist, der in Betätigungsrichtung (8) zum ersten Schenkel (2) hin federelastisch nachgiebig ist.Contact device for a printed circuit board (6), with a contact (1) resilient in the actuating direction (8) and a mating contact (7, 9), characterized in that the contact is designed as a flexurally elastic contact spring (1) which has a first resilient leg ( 2) with a contact surface (3) and a second leg (4) which is resilient in the direction of actuation (8) towards the first leg (2). Kontakteinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kontaktfeder (1) einen zur Verlötung mit der Leiterplatte (6) vorgesehenen Lötbereich aufweist, an dem ein Lappen (5) zur Entlastung der Lötstelle auf der Leiterplatte (6) ausgeschert ist.Contact device according to claim 1, characterized in that the contact spring (1) has a soldering area provided for soldering to the circuit board (6), on which a tab (5) is relieved to relieve the soldering point on the circuit board (6). Kontakteinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Kontaktfeder (1) eine geschlitzte Kontaktfläche (3) aufweist.Contact device according to claim 1 or 2, characterized in that the contact spring (1) has a slotted contact surface (3). Kontakteinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Gegenkontakt auf der Leiterplatte (6) als Lötstift (7) ausgeführt ist.Contact device according to one of the preceding claims, characterized in that the mating contact on the printed circuit board (6) is designed as a soldering pin (7). Kontakteinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Gegenkontakt als Lötpad (9) ausgeführt ist.Contact device according to one of the preceding claims, characterized in that the counter contact is designed as a solder pad (9). Kontakteinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Kontaktfeder (1) einstückig ausgeführt ist und die Verbindung zwischen dem ersten (2) und zweiten Schenkel (4) einen Biegeradius aufweist.Contact device according to one of the preceding claims, characterized in that the contact spring (1) is made in one piece and the connection between the first (2) and second leg (4) has a bending radius.
EP19980106265 1997-04-18 1998-04-06 Contact arrangement for a printed circuit board Expired - Lifetime EP0872921B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29707018U DE29707018U1 (en) 1997-04-18 1997-04-18 Contact device for a printed circuit board
DE29707018U 1997-04-18

Publications (3)

Publication Number Publication Date
EP0872921A2 true EP0872921A2 (en) 1998-10-21
EP0872921A3 EP0872921A3 (en) 1999-09-15
EP0872921B1 EP0872921B1 (en) 2007-01-24

Family

ID=8039198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980106265 Expired - Lifetime EP0872921B1 (en) 1997-04-18 1998-04-06 Contact arrangement for a printed circuit board

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EP (1) EP0872921B1 (en)
DE (2) DE29707018U1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012201672B4 (en) 2012-02-06 2024-03-28 Robert Bosch Gmbh Hand tool with an electrical switch device
DE102013000904B4 (en) * 2013-01-18 2023-08-24 Kostal Automobil Elektrik Gmbh & Co. Kg Switch contact spring for an electrical switch and corresponding switch

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0055528A1 (en) * 1980-12-22 1982-07-07 AMP INCORPORATED (a New Jersey corporation) Switch device for use on circuit board
US4620175A (en) * 1985-10-11 1986-10-28 North American Philips Corporation Simple thermostat for dip mounting
CH671648A5 (en) * 1987-02-13 1989-09-15 Contraves Ag Electric contact device for keyboard switch - uses double armed contact element between pushbutton operating element and fixed counter contact pin
US4885435A (en) * 1988-12-23 1989-12-05 Telephone And Telegraph Company Cantilever spring switch having multiple fulcrums

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE667850C (en) * 1935-11-01 1938-11-21 Aeg Contact arrangement for electrical installation switches, in particular automatic switches
DE3215320A1 (en) * 1982-04-23 1983-10-27 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Plug part, especially a flat plug sleeve
DE3814903A1 (en) * 1988-05-03 1989-11-16 Lumberg Karl Gmbh & Co Switchable electrical connector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0055528A1 (en) * 1980-12-22 1982-07-07 AMP INCORPORATED (a New Jersey corporation) Switch device for use on circuit board
US4620175A (en) * 1985-10-11 1986-10-28 North American Philips Corporation Simple thermostat for dip mounting
CH671648A5 (en) * 1987-02-13 1989-09-15 Contraves Ag Electric contact device for keyboard switch - uses double armed contact element between pushbutton operating element and fixed counter contact pin
US4885435A (en) * 1988-12-23 1989-12-05 Telephone And Telegraph Company Cantilever spring switch having multiple fulcrums

Also Published As

Publication number Publication date
EP0872921B1 (en) 2007-01-24
DE59813884D1 (en) 2007-03-15
DE29707018U1 (en) 1997-07-03
EP0872921A3 (en) 1999-09-15

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