EP0834207A1 - Contact means for electric installation equipment - Google Patents

Contact means for electric installation equipment

Info

Publication number
EP0834207A1
EP0834207A1 EP97919400A EP97919400A EP0834207A1 EP 0834207 A1 EP0834207 A1 EP 0834207A1 EP 97919400 A EP97919400 A EP 97919400A EP 97919400 A EP97919400 A EP 97919400A EP 0834207 A1 EP0834207 A1 EP 0834207A1
Authority
EP
European Patent Office
Prior art keywords
clamping piece
contact
spring body
contact device
shaped
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
EP97919400A
Other languages
German (de)
French (fr)
Other versions
EP0834207B1 (en
Inventor
Torsten Schlegel
Reinhard Heusing
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.)
AEG Niederspannungstechnik GmbH and Co KG
Original Assignee
AEG Niederspannungstechnik 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 AEG Niederspannungstechnik GmbH and Co KG filed Critical AEG Niederspannungstechnik GmbH and Co KG
Publication of EP0834207A1 publication Critical patent/EP0834207A1/en
Application granted granted Critical
Publication of EP0834207B1 publication Critical patent/EP0834207B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • H01R4/4854—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a wire spring
    • H01R4/4863—Coil spring

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Breakers (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Patch Boards (AREA)
  • Distribution Board (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Push-Button Switches (AREA)

Abstract

Contact means for electric installation equipment have pin-shaped or tongue-shaped connecting lugs (5.1) that can be plugged into a pocket-shaped clamping piece (1) of the installation equipment and elastically establish a contact therein. In order to ensure with such contact means a reliable and lasting connection between the connecting lugs (5.1) of a bus bar (5) and the corresponding clamping piece (1) with a low transfer impedance, a hollow cylindrical spring body (3) is arranged in the clamping piece (1) to generate at the periphery the contact forces between the connecting lug (5.1) and a contact surface (1.3) of the clamping piece (1). The spring body (3) is preferably shaped as a pressure spring whose windings however are relatively closely spaced and radially biased. These contact means are particularly suitable for electrically connecting circuit breakers and other serial built-in equipment to commercially available, pluggable bus bars.

Description

Beschreibung:Description:
„Kontakteinrichtung bei elektrischen Installationsgeräten""Contact device for electrical installation devices"
Die Erfindung betrifft eine Kontakteinrichtung bei elektrischen Installationsgeräten zur steckbaren Verbindung mit stift- oder zungenförmigen Anschlußfahnen, die ihrerseits jeweils in ein taschenförmiges Klemmstück der Installationsgeräte einsetzbar und dort federelastisch kontaktierbar sind.The invention relates to a contact device in electrical installation devices for pluggable connection with pin or tongue-shaped connecting lugs, which in turn can each be inserted into a pocket-shaped clamping piece of the installation devices and can be contacted there in a resilient manner.
Eine solche Kontakteinrichtung ist aus der EP 0 467 171 A2 bekannt. Hierbei sind innerhalb der Installationsgeräte klemmbackenartig zueinander federnde Kontakt¬ organe angeordnet, die Anschlußfahnen einer zugeordneten Stromschiene beid¬ seitig umfassen. Der elektrische Kontakt zu den Anschlußfahnen wird jeweils über die Werkstoffelastizität der Kontaktorgane hergestellt. Bei dieser Einrichtung sind die Kontaktkräfte sehr toleranzabhängig und nach jahrelangem Einsatz mit vielen Temperaturwechseln können diese ermüden.Such a contact device is known from EP 0 467 171 A2. In this case, contact elements resilient to one another are arranged within the installation devices in the manner of clamping jaws and comprise connection lugs on both sides of an associated busbar. The electrical contact to the connection lugs is established via the material elasticity of the contact elements. With this device, the contact forces are very dependent on tolerance and after years of use with many temperature changes, they can tire.
Der Erfindung liegt die Aufgabe zugrunde, eine steckbare Kontakteinrichtung der eingangs genannten Art kostengünstig so zu verbessern, daß eine sichere Verbin¬ dung zwischen den Anschlußfahnen einer Sammelschiene und dem zugehörigen Klemmstück der Installationsgeräte mit geringem Übergangswiderstand dauerhaft gewährleistet ist.The invention has for its object to improve a plug-in contact device of the type mentioned at the outset in such a way that a secure connection between the terminal lugs of a busbar and the associated clamping piece of the installation devices is permanently ensured with low contact resistance.
Diese Aufgabe wird durch eine Kontakteinrichtung mit den Merkmalen des Patent¬ anspruchs 1 gelöst. Weiterbildungen und vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen genannt.This object is achieved by a contact device with the features of claim 1. Further developments and advantageous refinements of the invention are mentioned in the subclaims.
Die Erfindung hat den Vorteil, daß die Kontakteinrichtung sehr klein und daher im Gerätesockel räumlich noch unterhalb der vorhandenen Schraubanschlußklemme angeordnet sowie mit dieser verbunden werden kann. Dadurch ist sowohl der bei Installationsgeräten zumeist übliche Schraubanschluß von der Seite als auch eine Steckkontaktierung von der Geräte-Unterseite her unabhängig voneinander möglich.The invention has the advantage that the contact device can be very small and can therefore be arranged in the base of the device below the existing screw terminal and connected to it. As a result, both the screw connection from the side, which is usually customary in installation devices, and plug-in contacting from the underside of the device are possible independently of one another.
ERSATZBLÄTT (REGEL 26) Ferner lassen sich große Maßtoleranzen überbrücken und gleichmäßige Kontakt¬ kräfte mit mehreren Kontaktierungsstellen entsprechend der Windungszahlen des Federkörpers erzielen. Andererseits sind aufgrund der drehbeweglichen Anordnung des Federkörpers die Einsteckkräfte für die Anschlußfahnen relativ gering.SPARE BLADE (RULE 26) Furthermore, large dimensional tolerances can be bridged and uniform contact forces can be achieved with a plurality of contacting points in accordance with the number of turns of the spring body. On the other hand, due to the rotatable arrangement of the spring body, the insertion forces for the terminal lugs are relatively low.
Anhand der aus einer Figur bestehenden Zeichnung ist die Erfindung an einem Ausführungsbeispiel nachstehend näher erläutert.Based on the drawing consisting of a figure, the invention is explained in more detail using an exemplary embodiment.
Die lediglich schematisch gezeigte Kontakteinrichtung ist im Gehäusesockel eines nicht dargestellten Installationsgerätes angeordet und weist ein Klemmstück 1 auf, welches einstückig mit einer Schraubanschlußklemme 2 verbunden ist. Letztere besteht auf an sich bekannte Art aus einem Klemmkasten 2.1 , der mittels einer Schraube 2.2 gegen ein Druckstück 2.3 verspannbar ist. Damit lassen sich drahtförmige elektrische Leiter entsprechend des eingezeichneten Pfeiles 2.4 auf herkömmliche Weise von der Seite her am Installationsgerät anschließen.The contact device, which is only shown schematically, is arranged in the housing base of an installation device (not shown) and has a clamping piece 1, which is connected in one piece to a screw terminal 2. The latter consists, in a manner known per se, of a terminal box 2.1 which can be clamped against a pressure piece 2.3 by means of a screw 2.2. In this way, wire-shaped electrical conductors can be connected to the installation device from the side in a conventional manner in accordance with the drawn arrow 2.4.
Im Bereich unterhalb des Klemmkastens 2.1 ist das vorzugsweise unmittelbar als Verlängerung des Druckstücks 2.3 ausgebildete Klemmstück 1 mit einem Rahmenteil 1.1 versehen, welches ähnlich einer Tasche geformt ist und einen Federkörper 3 aufnimmt. Dieser ist im Prinzip eine handelsübliche zylindrische Druckfeder, deren Achsrichtung senkrecht zur Zeichnungsebene verläuft. Zumindest nach dem Einsetzen in das Rahmenteil 1.1 liegen die Windungen des Federkörpers, der lediglich von einer schematisch angedeuteten Gehäusekontur 4 gegen Herausfallen gesichert ist, relativ eng aneinander an. Umfangsseitig kann sich der Federkörper 3 hingegen an einer Anlagefläche 1.2 nebst Abwinkelung 1.2' so abstützen, daß zu einer gegenüberliegenden Kontaktfläche 1.3 ein Spalt verbleibt, dessen Breite auf noch näher zu beschreibende Weise von den Abmessungen einer an einer Sammelschiene 5 vorstehenden Anschlußfahne 5.1 abhängt.In the area below the terminal box 2.1, the clamping piece 1, which is preferably formed directly as an extension of the pressure piece 2.3, is provided with a frame part 1.1, which is shaped like a pocket and accommodates a spring body 3. In principle, this is a commercially available cylindrical compression spring, the axial direction of which is perpendicular to the plane of the drawing. At least after insertion into the frame part 1.1, the turns of the spring body, which is only secured against falling out by a schematically indicated housing contour 4, lie relatively close to one another. On the circumferential side, on the other hand, the spring body 3 can be supported on a contact surface 1.2 together with the angled portion 1.2 'in such a way that a gap remains with an opposite contact surface 1.3, the width of which depends in a manner to be described in more detail on the dimensions of a connecting lug 5.1 projecting from a busbar 5.
Diese stift- oder zungenförmigen Anschlußfahnen 5.1 sind mehrfach an handels¬ üblichen Sammelschienen in Reihe hintereinander im Teilungsmaß der Installations- gerate angeordnet und dienen ganz allgemein zum elektrischen Anschluß vonThese pin-shaped or tongue-shaped connecting lugs 5.1 are arranged several times in series on standard busbars one behind the other in the pitch of the installation devices and are used in general for the electrical connection of
ERSATZBLÄTT (REGEL 26) Reiheneinbaugeräten. Neben der gebräuchlichen Verwendung jeweils an der Schraubanschlußklemme 2 dient hier die Sammelschiene jedoch zum Steckanschluß mit der Kontakteinrichtung durch eine Gehäuseöffnung 4.1 an der Geräteunterseite. Oberhalb dieser Öffnung ist daher der Spalt zwischen der Kontaktfläche 1.3 und der Mantelfläche des Federkörpers 3 derart mit Untermaß auf die Dicke der Anschlußfahne 5.1 abgestimmt, daß nach dem Einstecken jeweils einer Anschlußfahne in Richtung des Pfeiles 5.2 der zugehörige zylindrische Federkörper radial belastet ist und sich zu einem Oval verformt. Die einzelnen Windungen des Federkörpers 3 legen sich dabei eng an die Anschlußfahne an und pressen diese gegen die Kontaktfläche 1.3. Zugleich wird diese Federkraft auch auf die Anlagefläche 1.2 übertragen, die über das Rahmenteil 1.1 leitend mit dem Klemmstück 1 verbunden ist. Wird daher der Federkörper 3 aus Material mit guter elektrischer Leitfähigkeit hergestellt, verbessert sich die Stromführung noch.SPARE BLADE (RULE 26) Modular devices. In addition to the usual use of the screw terminal 2, the busbar is used here for the plug connection with the contact device through a housing opening 4.1 on the underside of the device. Above this opening, the gap between the contact surface 1.3 and the outer surface of the spring body 3 is so undersized to the thickness of the terminal lug 5.1 that after insertion of a terminal lug in the direction of arrow 5.2, the associated cylindrical spring body is radially loaded and to deformed into an oval. The individual turns of the spring body 3 lie closely against the terminal lug and press it against the contact surface 1.3. At the same time, this spring force is also transmitted to the contact surface 1.2, which is conductively connected to the clamping piece 1 via the frame part 1.1. Therefore, if the spring body 3 is made of material with good electrical conductivity, the current conduction is still improved.
Aufgrund der großen radialen Verformbarkeit des Federkörpers 3 lassen sich bei nahezu gleichbleibender Kontaktkraft erhebliche Toleranzen überbrücken, die einerseits herstellungsbedingt am Installationsgerät auftreten, insbesondere aber ihre Ursache in der Sammelschiene 5 als Zulieferteil von verschiedenen Herstellern haben können. Desweiteren kann über den Durchmesser des Federkörpers 3 sowie des zu seiner Herstellung verwendeten Drahtes die Kontaktkraft in weiten Bereichen an die technischen Erfordernisse angepaßt werden. Andererseits sind die Einsteckkräfte für die Anschlußfahne 5.1 relativ niedrig, da der Federkörper 3 beim Einsteckvorgang innerhalb des Rahmenteils 1.1 eine Rollbewegung um seine Längsachse bei minimaler Reibung ausführen kann.Due to the large radial deformability of the spring body 3, considerable tolerances can be bridged with an almost constant contact force, which occur on the one hand due to the manufacturing process on the installation device, but in particular may have their cause in the busbar 5 as a supplier part from different manufacturers. Furthermore, the contact force can be adapted in a wide range to the technical requirements via the diameter of the spring body 3 and the wire used for its production. On the other hand, the insertion forces for the terminal lug 5.1 are relatively low, since the spring body 3 can perform a rolling movement about its longitudinal axis with minimal friction during the insertion process within the frame part 1.1.
Oie Länge des Federkörpers ist abhängig von der Tiefe des Rahmenteils 1.1 und mit ausreichender Reserve an die Breite der üblichen Anschlußfahnen angepaßt, wobei die Endwindungen zweckmäßigerweise mit leichter Vorspannung am Rahmenteil anliegen. Zudem könnte der zylindrische Federkörper nicht aus Draht, sondern auch aus flachem Federband, beispielsweise in Form einer Spannhülse, hergestellt sein, ohne den Rahmen der Erfindung zu verlassen.The length of the spring body is adapted depending on the depth of the frame part 1.1 and with sufficient reserve to the width of the usual connecting lugs, the end windings expediently resting on the frame part with a slight prestress. In addition, the cylindrical spring body could not be made of wire, but also of flat spring band, for example in the form of an adapter sleeve, without leaving the scope of the invention.
ERSATZBUπ (REGEL 26) ERSATZBUπ (RULE 26)

Claims

Patentansprüche: Claims:
1. Kontakteinrichtung bei elektrischen Installationsgeräten zur steckbaren Verbindung mit stift- oder zungenförmigen Anschlußfahnen, die ihrerseits jeweils in ein taschenförmiges Klemmstück der Installationsgeräte einsetzbar und dort federelastisch kontaktierbar sind, dadurch gekennzeichnet, daß in dem Klemmstück (1) ein hohlzylindrischer Federkörper (3) angeordnet ist, über den umfangsseitig die Kontaktkraft zwischen der jeweiligen Anschlußfahne (5.1) und einer Kontaktfläche (1.3) des Klemmstücks herstellbar ist.1. Contact device for electrical installation devices for pluggable connection with pin-shaped or tongue-shaped connecting lugs, which in turn can each be inserted into a pocket-shaped clamping piece of the installation devices and can be contacted there resiliently, characterized in that a hollow cylindrical spring body (3) is arranged in the clamping piece (1) , via which the contact force between the respective terminal lug (5.1) and a contact surface (1.3) of the clamping piece can be produced.
2. Kontakteinrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß der Federkörper (3) die Form einer Druckfeder aufweist, deren Windungen jedoch relativ eng aneinander liegen und radial belastet sind.2. Contact device according to claim 1, characterized in that the spring body (3) has the shape of a compression spring, the windings of which, however, lie relatively close to one another and are loaded radially.
3. Kontakteinrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Federkörper (3) mit senkrecht zur Einsteckrichtung der Anschlußfahnen (5.1) verlaufender Achsrichtung lose in ein Rahmenteil (1.1) des Klemmstücks (1) eingelegt und lediglich gegen Herausfallen gesichert ist.3. Contact device according to claim 1 and 2, characterized in that the spring body (3) with perpendicular to the insertion direction of the terminal lugs (5.1) axial direction loosely inserted into a frame part (1.1) of the clamping piece (1) and is only secured against falling out.
4. Kontakteinrichtung nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß der Federkörper (3) gegenüberliegend von der Kontaktfläche (1.3) an einer Anlagefläche (1.2, 1.2') des Klemmstücks (1) abstützbar ist.4. Contact device according to claim 1 to 3, characterized in that the spring body (3) opposite from the contact surface (1.3) on a contact surface (1.2, 1.2 ') of the clamping piece (1) can be supported.
5. Kontakteinrichtung nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß das Klemmstück (1) als Teil einer Schraubanschlußklemmme (2) ausgebildet und vorzugsweise an deren Unterseite innerhalb des Gerätesockels angeordnet ist.5. Contact device according to claim 1 to 4, characterized in that the clamping piece (1) is formed as part of a screw terminal (2) and is preferably arranged on the underside within the device base.
6. Kontakteinrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Klemmstück (1) ein separates Rahmenteil (1.1) aufweist, welches die mit der Schraubanschlußklemmme (2) verbundene Kontaktfläche (1.3) und den Federkörper (3) gitterartig umschließt. 6. Contact device according to one of claims 1 to 5, characterized in that the clamping piece (1) has a separate frame part (1.1) which surrounds the with the screw terminal block (2) connected contact surface (1.3) and the spring body (3) like a grid.
7. Kontakteinrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Klemmstück (1) unterhalb eines Klemmkastens (2.1) der Schraub¬ anschlußklemme (2) als käfigartige, den eingelegten Federkörper (3) jeweils gegen die Einsteckkräfte der Anschlußfahnen (5.1) abstützende Verlängerung ausgebildet ist.7. Contact device according to one of claims 1 to 5, characterized in that the clamping piece (1) below a terminal box (2.1) of the screw terminal (2) as a cage-like, the inserted spring body (3) in each case against the insertion forces of the terminal lugs (5.1 ) supporting extension is formed.
8. Kontakteinrichtung nach einem der Ansprüche 1 bis 7, insbesondere für nebeneinander angeordnete, auf einer Profilschiene aufrastbare Leitungsschutzschalter oder andere Reiheneinbaugeräte, dadurch gekennzeichnet, daß die Anschlußfahnen (5.1) an einer zur Einspeisung dienenden Stiftsammeischiene (5) angeordnet und jeweils von der Unterseite der Gerätesockel her durch eine Gehäuseöffnung (4.1) in das Klemmstück (1) einsteckbar sind.8. Contact device according to one of claims 1 to 7, in particular for line circuit breakers or other modular devices arranged next to one another, which can be snapped onto a profile rail, characterized in that the connecting lugs (5.1) are arranged on a pin busbar (5) serving for feeding and each from the underside of the The base of the device can be inserted into the clamping piece (1) through a housing opening (4.1).
ERSATZBLÄTT (REGEL 26) SPARE BLADE (RULE 26)
EP97919400A 1996-04-23 1997-04-22 Contact means for electric installation equipment Expired - Lifetime EP0834207B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19616021 1996-04-23
DE19616021A DE19616021A1 (en) 1996-04-23 1996-04-23 Contact device for electrical installation devices
PCT/EP1997/002035 WO1997040561A1 (en) 1996-04-23 1997-04-22 Contact means for electric installation equipment

Publications (2)

Publication Number Publication Date
EP0834207A1 true EP0834207A1 (en) 1998-04-08
EP0834207B1 EP0834207B1 (en) 2001-11-07

Family

ID=7792100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97919400A Expired - Lifetime EP0834207B1 (en) 1996-04-23 1997-04-22 Contact means for electric installation equipment

Country Status (10)

Country Link
EP (1) EP0834207B1 (en)
AT (1) ATE208540T1 (en)
CZ (1) CZ287422B6 (en)
DE (2) DE19616021A1 (en)
ES (1) ES2167736T3 (en)
HU (1) HU223018B1 (en)
PL (1) PL182662B1 (en)
SI (1) SI9720007B (en)
SK (1) SK282939B6 (en)
WO (1) WO1997040561A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19859718A1 (en) * 1998-12-23 2000-06-29 Moeller Gmbh Current rail system has output points with tension spring terminals in form of cage tension springs connected directly to current rails, and terminals can be ultrasonically welded to current rails
DE102006057100B4 (en) * 2006-12-04 2011-12-01 Siemens Ag Plug-in installation device that can be connected to a busbar, and method for connecting a busbar to a built-in installation device
DE102010033112B4 (en) * 2010-08-02 2021-02-04 Siemens Aktiengesellschaft Electrical installation device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1441102A (en) * 1972-07-20 1976-06-30 Plessey Co Ltd Connectors
DE4021824C2 (en) * 1990-07-09 2001-08-30 Abb Patent Gmbh Distribution system with electrical installation devices in narrow construction that can be lined up on a support element
GB9408326D0 (en) * 1994-04-27 1994-06-15 Amp Great Britain Electrical connector for conductive leads
DE9418316U1 (en) * 1994-11-15 1996-03-21 Aeg Niederspannungstech Gmbh Device for connecting electrical installation devices

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9740561A1 *

Also Published As

Publication number Publication date
SK174897A3 (en) 1998-08-05
SK282939B6 (en) 2003-01-09
SI9720007B (en) 2002-02-28
WO1997040561A1 (en) 1997-10-30
CZ287422B6 (en) 2000-11-15
SI9720007A (en) 1998-08-31
HUP9903438A3 (en) 2000-06-28
DE19616021A1 (en) 1997-10-30
HU223018B1 (en) 2004-03-01
EP0834207B1 (en) 2001-11-07
CZ410697A3 (en) 1998-06-17
ES2167736T3 (en) 2002-05-16
HUP9903438A2 (en) 2000-02-28
PL182662B1 (en) 2002-02-28
PL324082A1 (en) 1998-05-11
DE59705255D1 (en) 2001-12-13
ATE208540T1 (en) 2001-11-15

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