EP2009745A1 - Electrical device with spring clip unit - Google Patents

Electrical device with spring clip unit Download PDF

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Publication number
EP2009745A1
EP2009745A1 EP07012787A EP07012787A EP2009745A1 EP 2009745 A1 EP2009745 A1 EP 2009745A1 EP 07012787 A EP07012787 A EP 07012787A EP 07012787 A EP07012787 A EP 07012787A EP 2009745 A1 EP2009745 A1 EP 2009745A1
Authority
EP
European Patent Office
Prior art keywords
spring
mounting
zone
electrical device
leg
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
EP07012787A
Other languages
German (de)
French (fr)
Other versions
EP2009745B1 (en
Inventor
Markus Meier
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
Priority to AT07012787T priority Critical patent/ATE490573T1/en
Priority to EP07012787A priority patent/EP2009745B1/en
Priority to DE502007005846T priority patent/DE502007005846D1/en
Publication of EP2009745A1 publication Critical patent/EP2009745A1/en
Application granted granted Critical
Publication of EP2009745B1 publication Critical patent/EP2009745B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/48275—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end with an opening in the housing for insertion of a release tool
    • 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
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/44—Clamping areas on both sides of screw

Definitions

  • the invention relates to an electrical device with a connection zone and with a mounted in the connection zone spring terminal unit, by means of which at least one electrical conductor is electrically connected.
  • the connecting unit designed as a spring clamping unit comprises an approximately U-shaped support part, on whose one U-leg a spring part is arranged and whose U-bottom is screwed to the connection zone of the electrical device.
  • This screw connection must be fitted before the final assembly of the spring clamp unit, as the spring element in the final assembled state denies access to the screw joint. This results in a complex manufacturing process.
  • the object of the invention is therefore to provide an electrical device of the type described, which allows a simple and flexible installation of the unit intended for electrical connection.
  • the provided for connection of the electrical conductor spring terminal unit can be particularly easy to attach to the connection zone in the electrical device according to the invention due to the mounting extension.
  • the e.g. spring clamp unit designed as a spring-loaded connection can therefore be easily mounted at any time and, if required, can be dismantled without difficulty.
  • the realization according to the invention thus does not require compliance with a specific production sequence.
  • the manufacturing process can be made completely independent and flexible in this respect. In particular, a costly manual assembly of the spring terminal unit is not necessary until the device is mounted. Because of the ever-present access to the screw joint namely no subsequent insertion of the spring member by hand is required. Overall, therefore, the production processes can be simplified and the manufacturing costs can be reduced.
  • connection zone for mounting the spring clamping unit has a first threaded bore and for mounting a screw clamping unit provided instead of the spring clamping unit has a second threaded bore. This further increases the flexibility of the manufacturing process. Depending on whether a spring or a screw clamping unit is to be used for the electrical connection of the conductors, no separate variants of the connection zone are to be provided.
  • the connection zone is equally suitable for both connection units.
  • the first threaded bore preferably lies deeper inside the housing than the second threaded bore.
  • the external dimensions of the device are then identical for both connection variants.
  • no undesirable enlargement of the outer dimensions is required when using the spring terminal unit.
  • the spring terminal unit Due to the spring part, the spring terminal unit has a slightly larger footprint than a fferklemmhim. Above all, it has a greater extent in the depth direction, that is to say in the direction in which the mounting leg also extends.
  • the first threaded hole provided for mounting the spring clamp unit is placed further inside the housing than the second threaded hole, the greater space requirement of the spring clamp unit does not affect the external dimensions.
  • the spring clamp unit is completely pre-assembled. This eliminates a final assembly of the spring terminal unit during or after the attachment of the support member to the connection zone.
  • the spring clamp unit can be made completely independent of the mounting progress of the rest of the electrical device. It is to be screwed as a completely pre-assembled subcomponent during assembly of the electrical device only at the connection zone. This separate and in particular automated prefabrication of the spring clamp unit offers cost advantages.
  • the support member is also integrally formed. This makes it particularly easy and inexpensive to manufacture be, for example, as a sheet punched and bent component.
  • the carrier part consists of two mechanically fixed interconnected subcomponents, wherein a first sub-component comprises the holding leg and a second sub-component comprises at least the mounting extension of the mounting leg.
  • a support contour can preferably be integrally formed on the subcomponent of the retaining leg, on which a tool can be supported for releasing a clamping connection. In the one-part embodiment described above, this support function is perceived in particular by another element provided within the electrical device, for example by an element formed on the inside of a terminal cover.
  • FIG. 1 an embodiment of an unspecified electrical device 1 is shown, which has a connection zone 2 for electrical connection of the electrical device 1 to at least one externally brought up electrical conductor.
  • connection zone 2 mounting plates 3, each with a front and a rear threaded bore 4 and 5 are provided.
  • the front threaded hole 4 is intended for screw fastening a fferklemmiki and the rear threaded hole 5 for screw mounting a spring clamp unit 6.
  • spring clamp units 6 are attached.
  • the basic unit including the connection zone 2 with the mounting plates 3 remains the same for both connection variants.
  • the electric appliance 1 is shown in an assembled state in which all three spring clamp units 6 are mounted.
  • the in FIG. 1 and 2 shown separate spring clamp units 6 are combined to form a common assembly. They then form a single spring clamp unit for connecting all electrical conductors.
  • FIG. 3 the electrical device 1 is shown in the finished mounted final state, in which the spring terminal units 6 are covered by a terminal cover 7.
  • the latter has conductor openings 8 for inserting the electrical conductors to be connected, plug openings 9 for inserting additional plugs and tool openings 10 into which a tool for releasing the clamping connection of a connected conductor can be inserted.
  • FIG. 4 an embodiment of a partially assembled electrical device 11 is shown, in which in the connection zone 2 erklemmiseren 12 are mounted.
  • the fferklemmiseren 12 each comprise a screwed into the front threaded hole 4 screw 13 and a clamping plate 14 with obliquely inclined in the direction of the associated mounting plate 3 side cheeks.
  • a conductor to be connected is clamped between one of these inclined side walls and two protruding from the plane of the mounting plate 3 and provided with oblique bearing surfaces projections 15.
  • the four in particular embossed projections 15 are placed close to, but still with sufficient distance to the front threaded hole 4, so that a clamped conductor does not come into contact with the respective screw 13.
  • FIG. 5 one of the spring clamp units 6 is shown in unmounted state. It has in the illustrated embodiment, three main components, namely two identical spring parts 16 and 17 and a support member 18.
  • Each of the spring members 16 and 17 is an integrally formed by punching and bending operations of a spring plate element having a support arm 19, a connecting portion 20 and a with a guide opening 21 provided clamping arm 22 has.
  • the clamping arm 22 is so far bent back by means of the connecting portion 20 in the direction of the support arm 19, that the support arm 19 with its free end 23, the guide opening 21 passes through.
  • the support member 18 is composed of two firmly interconnected, for example, welded subcomponents together.
  • the first subcomponent is formed by an approximately U-shaped sheet metal stamped part. Whose first U-leg is a holding leg 24.
  • the second U-leg is shorter than the first and forms a Abstützkontur 25.
  • Both U-legs are connected to each other by means of a U-bottom, wherein each of the U-bottom with an opening angle protrude from more than 90 °.
  • the second sub-component is mounted on the side facing away from the U-legs side. It is designed as a flat sheet metal stamping assembly extension 26 which forms a mounting leg 27 of the support member 18 together with the U-bottom.
  • the holding leg 24 terminates in two holding webs 28 and 29, on which the two spring parts 16 and 17 are attached. If the spring parts 16 and 17 as in FIG. 5
  • the support arms 19 of the spring parts 16 and 17 are at least in the region of their rounded transition zone to the respective associated connection portion 20 on the holding leg 24 on.
  • Each of the spring parts 16 and 17 is thus largely on the supporting contour 25 side facing the retaining leg 24, wherein the respective spring member 16 and 17 extends with its clamping arm 22 but also on the other side of the retaining leg 24.
  • the amount of space the spring members 16 and 17 occupy on either side of the retaining leg 24 depends on the current clamping condition, i. of whether an electrical conductor is clamped between the holding limb 24 and the longitudinal edge of the guide opening 21 of the respective clamping arm 22 facing away from the connection region 20.
  • the maximum space requirement of the spring parts 16 and 17 on each side of the retaining leg 24 is determined by a spring zone 30 and 31 respectively.
  • the mounting leg 27 extends from the retaining leg 24 in the direction of the spring zone 30 and beyond the spring zone 30 also. In this beyond the spring zone 30 beyond End portion of the mounting extension 26 is a through hole 32 is provided, through which a screw inserted through and can be screwed into the rear threaded hole 5 of the mounting plate 3.
  • the term "rear” is to be understood with reference to a lateral housing wall 33 of the terminal cover 7.
  • the threaded hole 5 is located further away from this housing wall 33 and thus seen in a longitudinal direction of the mounting leg 27 deeper in the housing interior than the threaded bore 4th
  • the mounting extension 26 has four recesses 34 for receiving the projections 15.
  • the mounting plate 3 therefore need not be changed when using spring clamp units 6.
  • the projections 15 that are actually only required when using screw clamping units 12 can be retained. They do not interfere with the assembly of spring clamp units 6. Due to the engagement in the recesses 34 they even cause a favorable rotation of the spring clamp unit. 6
  • FIG. 6 is a sectional view through an assembled spring clamp unit 6 is shown.
  • An inserted through the conductor opening 8 and in the spring zone 31 between the clamping arm 22 and the holding leg 24 pinched electrical conductor 35 is released by means of a tool through the opening 10 and supported on the Abstützkontur 25 tool 36. Due to the support, the tool 36, the spring member 16 continue to compress and thus cancel the clamping force effect. The electrical conductor 35 can then be removed again without problems.
  • the tool 36 can also be supported on an integrally formed on the terminal cover 7 extension 37.

Abstract

The device has a spring clamping unit (6) comprising a spring part (16) and a carrier part (18) with a fixing leg (24) and a mounting bracket (27). The mounting bracket extends in a direction of a spring zone (30) with respect to the fixing leg and outreaches the spring zone with a mounting extension (26). The mounting extension is fastened to a connection zone by a screw connection, in its region that outreaches the spring zone. The screw connection is accessible by the attached spring part. The connection for mounting the clamping unit comprises a threaded hole.

Description

Die Erfindung betrifft ein elektrisches Gerät mit einer Anschlusszone und mit einer in der Anschlusszone montierten Federklemmeinheit, mittels derer mindestens ein elektrischer Leiter elektrisch anschließbar ist.The invention relates to an electrical device with a connection zone and with a mounted in the connection zone spring terminal unit, by means of which at least one electrical conductor is electrically connected.

Ein derartiges elektrisches Gerät ist beispielsweise in der EP 0 893 847 A1 beschrieben. Bei dem bekannten Gerät umfasst die als Federklemmeinheit ausgebildete Anschlusseinheit ein in etwa U-förmiges Trägerteil, an dessen einem U-Schenkel ein Federteil angeordnet ist und dessen U-Boden an der Anschlusszone des elektrischen Geräts angeschraubt ist. Diese Schraubverbindung ist vor der Endmontage der Federklemmeinheit anzubringen, da das Federteil im endmontierten zustand den Zugang zu der Schraubverbindungsstelle verwehrt. Dadurch resultiert ein aufwändiger Fertigungsprozess.Such an electrical device is for example in the EP 0 893 847 A1 described. In the known device, the connecting unit designed as a spring clamping unit comprises an approximately U-shaped support part, on whose one U-leg a spring part is arranged and whose U-bottom is screwed to the connection zone of the electrical device. This screw connection must be fitted before the final assembly of the spring clamp unit, as the spring element in the final assembled state denies access to the screw joint. This results in a complex manufacturing process.

Die Aufgabe der Erfindung besteht deshalb darin, ein elektrisches Gerät der eingangs bezeichneten Art anzugeben, das eine einfache und flexible Montage der zum elektrischen Anschluss bestimmten Einheit ermöglicht.The object of the invention is therefore to provide an electrical device of the type described, which allows a simple and flexible installation of the unit intended for electrical connection.

Diese Aufgabe wird gelöst durch die Merkmale des unabhängigen Patentanspruchs 1. Bei dem erfindungsgemäßen elektrischen Gerät handelt es sich um ein solches, bei dem

  1. a) die Federklemmeinheit mindestens ein Federteil sowie ein Trägerteil mit einem Halteschenkel und einem Montageschenkel umfasst,
  2. b) eine erste und eine zweite Federzone auf einander gegenüber liegenden Seiten des Halteschenkels vorgesehen sind,
  3. c) das Federteil an dem Halteschenkel angebracht ist und je nach aktuellem Klemmzustand die erste und die zweite Federzone mehr oder weniger weit ausfüllt,
  4. d) der Montageschenkel sich ausgehend vom Halteschenkel in Richtung der ersten Federzone erstreckt und mit einem Montagefortsatz weiter reicht als die erste Federzone, und
  5. e) der Montagefortsatz in seinem über die erste Federzone hinausreichenden Bereich mittels einer Schraubverbindung an der Anschlusszone befestigt ist.
This object is achieved by the features of independent claim 1. The electrical device according to the invention is such, in which
  1. a) the spring clamping unit comprises at least one spring part and a carrier part with a holding leg and a mounting leg,
  2. b) a first and a second spring zone are provided on mutually opposite sides of the retaining leg,
  3. c) the spring part is attached to the holding leg and, depending on the current clamping state, fills the first and second spring zones more or less widely,
  4. d) the mounting leg extends from the holding leg in the direction of the first spring zone and extends with a mounting extension further than the first spring zone, and
  5. e) the mounting extension is secured in its reaching beyond the first spring zone area by means of a screw connection to the connection zone.

Die zum Anschluss des elektrischen Leiters vorgesehene Federklemmeinheit lässt sich bei dem erfindungsgemäßen elektrischen Gerät aufgrund des Montagefortsatzes besonders einfach an der Anschlusszone anbringen. Dadurch, dass sich der für die Anbringung der Schraubverbindung maßgebliche Bereich des Montagefortsatzes insbesondere jenseits des äußeren Randes der ersten Federzone, also jenseits des Bereichs, den das Federteil auf dieser Seite des Halteschenkels maximal abdecken kann, befindet, bleibt der Zugang zu der Schraubverbindungsstelle immer möglich. Die z.B. als Federzuganschluss ausgebildete Federklemmeinheit lässt sich somit jederzeit leicht montieren und bei Bedarf problemlos auch wieder demontieren. Die erfindungsgemäße Realisierung erfordert also keine Einhaltung einer bestimmten Fertigungsabfolge. Der Fertigungsablauf kann diesbezüglich vollkommen unabhängig und flexibel gestaltet werden. Insbesondere erübrigt sich auch eine kostenintensive Handmontage der Federklemmeinheit erst während der Gerätemontage. Aufgrund des stets gegebenen Zugangs zu der Schraubverbindungsstelle ist nämlich kein nachträgliches Einsetzen des Federteils von Hand erforderlich. Insgesamt können also die Fertigungsabläufe vereinfacht und die Fertigungskosten gesenkt werden.The provided for connection of the electrical conductor spring terminal unit can be particularly easy to attach to the connection zone in the electrical device according to the invention due to the mounting extension. The fact that the decisive for the attachment of the screw portion of the mounting extension in particular beyond the outer edge of the first spring zone, ie beyond the range that can cover the spring member on this side of the retaining leg maximum, access to the screw connection always remains possible , The e.g. spring clamp unit designed as a spring-loaded connection can therefore be easily mounted at any time and, if required, can be dismantled without difficulty. The realization according to the invention thus does not require compliance with a specific production sequence. The manufacturing process can be made completely independent and flexible in this respect. In particular, a costly manual assembly of the spring terminal unit is not necessary until the device is mounted. Because of the ever-present access to the screw joint namely no subsequent insertion of the spring member by hand is required. Overall, therefore, the production processes can be simplified and the manufacturing costs can be reduced.

Vorteilhafte Ausgestaltungen des erfindungsgemäßen elektrischen Geräts ergeben sich aus den Merkmalen der von Anspruch 1 abhängigen Ansprüche.Advantageous embodiments of the electrical device according to the invention will become apparent from the features of the dependent claims of claim 1.

Günstig ist eine Variante, bei der die Anschlusszone zur Montage der Federklemmeinheit eine erste Gewindebohrung und zur Montage einer anstelle der Federklemmeinheit vorgesehenen Schraubklemmeinheit eine zweite Gewindebohrung aufweist. Dies steigert die Flexibilität des Herstellungsprozesses weiter. Es sind dann je nachdem, ob eine Feder- oder eine Schraubklemmeinheit zum elektrischen Anschluss der Leiter verwendet werden soll, keine gesonderten Varianten der Anschlusszone vorzusehen. Die Anschlusszone ist für beide Anschlusseinheiten gleichermaßen geeignet.A variant in which the connection zone for mounting the spring clamping unit has a first threaded bore and for mounting a screw clamping unit provided instead of the spring clamping unit has a second threaded bore. This further increases the flexibility of the manufacturing process. Depending on whether a spring or a screw clamping unit is to be used for the electrical connection of the conductors, no separate variants of the connection zone are to be provided. The connection zone is equally suitable for both connection units.

Weiterhin kann die erste Gewindebohrung vorzugsweise tiefer im Gehäuseinneren liegt als die zweite Gewindebohrung. Damit ist für beide Typen der Anschlusseinheit die jeweils richtige spezifische Montageposition gewährleistet. Die Außenabmessungen des Geräts sind dann bei beiden Anschlussvarianten identisch. Insbesondere ist beim Einsatz der Federklemmeinheit keine unerwünschte Vergrößerung der Außenabmessungen erforderlich. Aufgrund des Federteils hat die Federklemmeinheit zwar einen etwas größeren Platzbedarf als eine Schraubklemmeinheit. Sie hat vor allem eine größere Ausdehnung in Tiefenrichtung, also in der Richtung, in der sich auch der Montageschenkel erstreckt. Da die zur Montage der Federklemmeinheit vorgesehene erste Gewindebohrung aber weiter innen im Gehäuse platziert ist als die zweite Gewindebohrung, wirkt sich der größere Platzbedarf der Federklemmeinheit nicht auf die Außenabmessungen aus.Furthermore, the first threaded bore preferably lies deeper inside the housing than the second threaded bore. Thus, the respective correct specific mounting position is guaranteed for both types of connection unit. The external dimensions of the device are then identical for both connection variants. In particular, no undesirable enlargement of the outer dimensions is required when using the spring terminal unit. Due to the spring part, the spring terminal unit has a slightly larger footprint than a Schraubklemmeinheit. Above all, it has a greater extent in the depth direction, that is to say in the direction in which the mounting leg also extends. However, since the first threaded hole provided for mounting the spring clamp unit is placed further inside the housing than the second threaded hole, the greater space requirement of the spring clamp unit does not affect the external dimensions.

Gemäß einer anderen günstigen Variante ist die Federklemmeinheit vollständig vormontiert. Dies erübrigt eine Endmontage der Federklemmeinheit erst während oder nach der Anbringung des Trägerteils an der Anschlusszone. Die Federklemmeinheit kann vollkommen unabhängig von dem Montagefortschritt des übrigen elektrischen Geräts gefertigt werden. Sie ist als komplett vormontierte Teilkomponente während des Zusammenbaus des elektrischen Geräts lediglich an der Anschlusszone anzuschrauben. Diese separate und insbesondere automatisierte Vorfertigung der Federklemmeinheit bietet Kostenvorteile.According to another favorable variant, the spring clamp unit is completely pre-assembled. This eliminates a final assembly of the spring terminal unit during or after the attachment of the support member to the connection zone. The spring clamp unit can be made completely independent of the mounting progress of the rest of the electrical device. It is to be screwed as a completely pre-assembled subcomponent during assembly of the electrical device only at the connection zone. This separate and in particular automated prefabrication of the spring clamp unit offers cost advantages.

Vorzugsweise ist das Trägerteil außerdem einstückig ausgebildet ist. So kann es besonders einfach und kostengünstig hergestellt werden, beispielsweise als aus einem Blech gestanzte und gebogene Komponente.Preferably, the support member is also integrally formed. This makes it particularly easy and inexpensive to manufacture be, for example, as a sheet punched and bent component.

Bei einer anderen ebenso vorteilhaften Ausgestaltung setzt sich das Trägerteil aus zwei mechanisch fest miteinander verbundenen Teilkomponenten zusammen, wobei eine erste Teilkomponente den Halteschenkel umfasst und eine zweite Teilkomponente zumindest den Montagefortsatz des Montageschenkels umfasst. Bei dieser Ausgestaltung kann vorzugsweise an der Teilkomponente des Halteschenkels eine Abstützkontur angeformt sein, an der sich ein Werkzeug zum Lösen einer Klemmverbindung abstützen lässt. Bei der vorstehend beschriebenen einteiligen Ausgestaltung wird diese Abstützfunktion insbesondere von einem anderen innerhalb des elektrischen Geräts vorgesehenen Element, beispielsweise von einem innen an einer Klemmenabdeckung angeformten Element, wahrgenommen.In another equally advantageous embodiment, the carrier part consists of two mechanically fixed interconnected subcomponents, wherein a first sub-component comprises the holding leg and a second sub-component comprises at least the mounting extension of the mounting leg. In this embodiment, a support contour can preferably be integrally formed on the subcomponent of the retaining leg, on which a tool can be supported for releasing a clamping connection. In the one-part embodiment described above, this support function is perceived in particular by another element provided within the electrical device, for example by an element formed on the inside of a terminal cover.

Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen anhand der Zeichnung. Es zeigt:

FIG 1
ein Ausführungsbeispiel eines elektrischen Geräts in teilmontiertem zustand mit zwei montierten Federklemmeinheiten,
FIG 2
das elektrische Gerät gemäß FIG 1 in teilmontiertem Zustand mit drei montierten Federklemmeinheiten,
FIG 3
das elektrische Gerät gemäß FIG 1 und 2 in endmontiertem Zustand mit aufgesetzter Klemmenabdeckung,
FIG 4
ein Ausführungsbeispiel eines teilmontierten elektrischen Geräts mit Schraubklemmeinheiten,
FIG 5
eine Federklemmeinheit des elektrischen Geräts gemäß FIG 1 bis 3 in unmontiertem Zustand und
FIG 6
eine Schnittdarstellung durch eine montierte Federklemmeinheit gemäß FIG 1, 2 und 5 während des Lösens eines eingeklemmten elektrischen Leiters mittels eines Werkzeugs.
Further features, advantages and details of the invention will become apparent from the following description of exemplary embodiments with reference to the drawing. It shows:
FIG. 1
An embodiment of an electrical device in a partially assembled state with two mounted spring clamp units,
FIG. 2
the electrical device according to FIG. 1 in partially assembled condition with three spring clamp units mounted,
FIG. 3
the electrical device according to FIG. 1 and 2 in final assembled condition with attached terminal cover,
FIG. 4
An embodiment of a partially assembled electrical device with Schraubklemmeinheiten,
FIG. 5
a spring terminal unit of the electrical device according to 1 to 3 in unmounted condition and
FIG. 6
a sectional view through an assembled spring clamp unit according to FIG. 1 . 2 and 5 during release of a clamped electrical conductor by means of a tool.

Einander entsprechende Teile sind in FIG 1 bis 6 mit denselben Bezugszeichen versehen.Corresponding parts are in 1 to 6 provided with the same reference numerals.

In FIG 1 ist ein Ausführungsbeispiel eines nicht näher beschriebenen elektrischen Geräts 1 gezeigt, das zum elektrischen Anschluss des elektrischen Geräts 1 an mindestens einen von außen herangeführten elektrischen Leiter eine Anschlusszone 2 aufweist. In der Anschlusszone 2 sind Montageplatten 3 mit jeweils einer vorderen und einer hinteren Gewindebohrung 4 bzw. 5 vorgesehen. Die vordere Gewindebohrung 4 ist zur Schraubbefestigung einer Schraubklemmeinheit und die hintere Gewindebohrung 5 zur Schraubbefestigung einer Federklemmeinheit 6 bestimmt. Zum Anschluss der elektrischen Leiter können in der Anschlusszone 2 wahlweise entweder Schraubklemmeinheiten (siehe FIG 4) oder die in FIG 1 gezeigten Federklemmeinheiten 6 angebracht werden. Das Grundgerät inklusive der Anschlusszone 2 mit den Montageplatten 3 bleibt bei beiden Anschlussvarianten gleich.In FIG. 1 an embodiment of an unspecified electrical device 1 is shown, which has a connection zone 2 for electrical connection of the electrical device 1 to at least one externally brought up electrical conductor. In the connection zone 2 mounting plates 3, each with a front and a rear threaded bore 4 and 5 are provided. The front threaded hole 4 is intended for screw fastening a Schraubklemmeinheit and the rear threaded hole 5 for screw mounting a spring clamp unit 6. For connection of the electrical conductors can either in the connection zone 2 either Schraubklemmeinheiten (see FIG. 4 ) or the in FIG. 1 shown spring clamp units 6 are attached. The basic unit including the connection zone 2 with the mounting plates 3 remains the same for both connection variants.

In der teilmontierten Darstellung gemäß FIG 1 sind zwei Federklemmeinheiten 6 zum Anschluss von jeweils zwei elektrischen Leitern montiert. Ein dritter Montageplatz für eine weitere Federklemmeinheit 6 ist noch unbelegt, so dass die beiden Gewindebohrung 4 und 5 ersichtlich sind.In the partially assembled representation according to FIG. 1 are mounted two spring terminal units 6 for connecting two electrical conductors. A third mounting location for another spring clamp unit 6 is still unoccupied, so that the two threaded holes 4 and 5 can be seen.

In FIG 2 ist das elektrische Gerät 1 in einem Montagezustand gezeigt, bei dem alle drei Federklemmeinheiten 6 montiert sind. Prinzipiell ist es auch möglich, dass die in FIG 1 und 2 dargestellten separaten Federklemmeinheiten 6 zu einer gemeinsamen Baugruppe zusammengefasst sind. Sie bilden dann eine einzige Federklemmeinheit zum Anschluss aller elektrischen Leiter.In FIG. 2 For example, the electric appliance 1 is shown in an assembled state in which all three spring clamp units 6 are mounted. In principle, it is also possible that the in FIG. 1 and 2 shown separate spring clamp units 6 are combined to form a common assembly. They then form a single spring clamp unit for connecting all electrical conductors.

In FIG 3 ist das elektrische Gerät 1 im fertig montierten Endzustand gezeigt, bei dem die Federklemmeinheiten 6 mittels einer Klemmenabdeckung 7 abgedeckt sind. Letztere hat Leiteröffnungen 8 zum Einstecken der anzuschließenden elektrischen Leiter, Steckeröffnungen 9 zum Einstecken von Zusatzsteckern und Werkzeugöffnungen 10, in die ein Werkzeug zum Lösen der Klemmverbindung eines angeschlossenen Leiters eingeführt werden kann.In FIG. 3 the electrical device 1 is shown in the finished mounted final state, in which the spring terminal units 6 are covered by a terminal cover 7. The latter has conductor openings 8 for inserting the electrical conductors to be connected, plug openings 9 for inserting additional plugs and tool openings 10 into which a tool for releasing the clamping connection of a connected conductor can be inserted.

Zum Vergleich ist in FIG 4 ein Ausführungsbeispiel eines teilmontierten elektrischen Geräts 11 gezeigt, bei dem in der Anschlusszone 2 Schraubklemmeinheiten 12 angebracht sind. Die Schraubklemmeinheiten 12 umfassen jeweils eine in die vordere Gewindebohrung 4 eingeschraubte Schraube 13 und eine Klemmscheibe 14 mit schräg in Richtung der zugehörigen Montageplatte 3 geneigten Seitenwangen. Ein anzuschließender Leiter wird zwischen eine dieser geneigten Seitenwangen und zwei aus der Ebene der Montageplatte 3 herausstehenden und mit schrägen Anlageflächen versehenen Vorsprüngen 15 eingeklemmt. Die insgesamt vier insbesondere geprägten Vorsprünge 15 sind nahe an, aber noch mit ausreichendem Abstand zu der vorderen Gewindebohrung 4 platziert, so dass ein eingeklemmter Leiter nicht mit der jeweiligen Schraube 13 in Berührung kommt.For comparison, in FIG. 4 an embodiment of a partially assembled electrical device 11 is shown, in which in the connection zone 2 Schraubklemmeinheiten 12 are mounted. The Schraubklemmeinheiten 12 each comprise a screwed into the front threaded hole 4 screw 13 and a clamping plate 14 with obliquely inclined in the direction of the associated mounting plate 3 side cheeks. A conductor to be connected is clamped between one of these inclined side walls and two protruding from the plane of the mounting plate 3 and provided with oblique bearing surfaces projections 15. The four in particular embossed projections 15 are placed close to, but still with sufficient distance to the front threaded hole 4, so that a clamped conductor does not come into contact with the respective screw 13.

In FIG 5 ist eine der Federklemmeinheiten 6 in unmontiertem Zustand gezeigt. Sie hat beim gezeigten Ausführungsbeispiel drei Hauptbestandteile, nämlich zwei baugleiche Federteile 16 und 17 sowie ein Trägerteil 18. Jedes der Federteile 16 und 17 ist ein einstückig mittels Stanz- und Biegeoperationen aus einem Federblech gebildetes Element, das einen Stützarm 19, einen Verbindungsbereich 20 und einen mit einer Führungsöffnung 21 versehenen Klemmarm 22 hat. Der Klemmarm 22 ist mittels des Verbindungsbereichs 20 so weit in Richtung des Stützarms 19 zurück gebogen, dass der Stützarm 19 mit seinem freien Ende 23 die Führungsöffnung 21 durchgreift.In FIG. 5 one of the spring clamp units 6 is shown in unmounted state. It has in the illustrated embodiment, three main components, namely two identical spring parts 16 and 17 and a support member 18. Each of the spring members 16 and 17 is an integrally formed by punching and bending operations of a spring plate element having a support arm 19, a connecting portion 20 and a with a guide opening 21 provided clamping arm 22 has. The clamping arm 22 is so far bent back by means of the connecting portion 20 in the direction of the support arm 19, that the support arm 19 with its free end 23, the guide opening 21 passes through.

Das Trägerteil 18 setzt sich aus zwei fest miteinander verbundenen, beispielsweise verschweißten Teilkomponenten zusammen. Die erste Teilkomponente ist durch ein in etwa U-förmig gebogenes Blechstanzteil gebildet. Dessen erster U-Schenkel ist ein Halteschenkel 24. Der zweite U-Schenkel ist kürzer als der erste und bildet eine Abstützkontur 25. Beide U-Schenkel sind mittels eines U-Bodens miteinander verbunden, wobei sie von dem U-Boden jeweils mit einem Öffnungswinkel von mehr als 90° abstehen. An dem U-Boden ist auf der von den U-Schenkeln abgewandten Seite die zweite Teilkomponente angebracht. Sie ist ein als flaches Blechstanzteil ausgeführter Montagefortsatz 26, der zusammen mit dem U-Boden einen Montageschenkel 27 des Trägerteils 18 bildet.The support member 18 is composed of two firmly interconnected, for example, welded subcomponents together. The first subcomponent is formed by an approximately U-shaped sheet metal stamped part. Whose first U-leg is a holding leg 24. The second U-leg is shorter than the first and forms a Abstützkontur 25. Both U-legs are connected to each other by means of a U-bottom, wherein each of the U-bottom with an opening angle protrude from more than 90 °. At the U-bottom, the second sub-component is mounted on the side facing away from the U-legs side. It is designed as a flat sheet metal stamping assembly extension 26 which forms a mounting leg 27 of the support member 18 together with the U-bottom.

Der Halteschenkel 24 endet in zwei Haltestegen 28 und 29, an denen die beiden Federteile 16 und 17 befestigt sind. Wenn die Federteile 16 und 17 wie in FIG 5 gezeigt aufgesetzt sind, durchgreifen auch die beiden Haltestege 28 und 29 des Halteschenkels 24 die jeweilige Führungsöffnung 21 der Federteile 16 und 17. Die Stützarme 19 der Federteile 16 und 17 liegen dabei zumindest im Bereich ihrer abgerundeten Übergangszone zu dem jeweils zugehörigen Verbindungsbereich 20 an dem Halteschenkel 24 an.The holding leg 24 terminates in two holding webs 28 and 29, on which the two spring parts 16 and 17 are attached. If the spring parts 16 and 17 as in FIG. 5 The support arms 19 of the spring parts 16 and 17 are at least in the region of their rounded transition zone to the respective associated connection portion 20 on the holding leg 24 on.

Jedes der Federteile 16 und 17 befindet sich also größtenteils auf der der Abstützkontur 25 zugewandten Seite des Halteschenkels 24, wobei sich das betreffende Federteil 16 bzw. 17 mit seinem Klemmarm 22 aber auch auf die andere Seite des Halteschenkels 24 erstreckt. Wie viel Platz die Federteile 16 und 17 auf jeder Seite des Halteschenkels 24 einnehmen, hängt vom aktuellen Klemmzustand ab, d.h. davon, ob ein elektrischer Leiter zwischen dem Halteschenkel 24 und dem vom Verbindungsbereich 20 abgewandten Längsrand der Führungsöffnung 21 des jeweiligen Klemmarms 22 eingeklemmt ist. Der maximale Platzbedarf der Federteile 16 und 17 auf jeder Seite des Halteschenkels 24 ist durch eine Federzone 30 bzw. 31 bestimmt.Each of the spring parts 16 and 17 is thus largely on the supporting contour 25 side facing the retaining leg 24, wherein the respective spring member 16 and 17 extends with its clamping arm 22 but also on the other side of the retaining leg 24. The amount of space the spring members 16 and 17 occupy on either side of the retaining leg 24 depends on the current clamping condition, i. of whether an electrical conductor is clamped between the holding limb 24 and the longitudinal edge of the guide opening 21 of the respective clamping arm 22 facing away from the connection region 20. The maximum space requirement of the spring parts 16 and 17 on each side of the retaining leg 24 is determined by a spring zone 30 and 31 respectively.

Der Montageschenkel 27 erstreckt sich ausgehend vom Halteschenkel 24 in Richtung der Federzone 30 und bis über die Federzone 30 hinaus. In diesem über die Federzone 30 hinausreichenden Endbereich des Montagefortsatzes 26 ist eine Durchgangsöffnung 32 vorgesehen, durch die eine Schraube hindurch gesteckt und in die hintere Gewindebohrung 5 der Montageplatte 3 eingeschraubt werden kann. Die Angabe "hintere" ist dabei in Bezug auf eine seitliche Gehäusewand 33 der Klemmenabdeckung 7 zu verstehen. Die Gewindebohrung 5 befindet sich weiter entfernt von dieser Gehäusewand 33 und damit in einer Längsrichtung des Montageschenkels 27 gesehen tiefer im Gehäuseinneren als die Gewindebohrung 4.The mounting leg 27 extends from the retaining leg 24 in the direction of the spring zone 30 and beyond the spring zone 30 also. In this beyond the spring zone 30 beyond End portion of the mounting extension 26 is a through hole 32 is provided, through which a screw inserted through and can be screwed into the rear threaded hole 5 of the mounting plate 3. The term "rear" is to be understood with reference to a lateral housing wall 33 of the terminal cover 7. The threaded hole 5 is located further away from this housing wall 33 and thus seen in a longitudinal direction of the mounting leg 27 deeper in the housing interior than the threaded bore 4th

Neben der Durchgangsöffnung 32 weist der Montagefortsatz 26 vier Aussparungen 34 zur Aufnahme der Vorsprünge 15 auf. Die Montageplatte 3 braucht also bei der Verwendung von Federklemmeinheiten 6 nicht abgeändert zu werden. Insbesondere können die eigentlich nur bei dem Einsatz von Schraubklemmeinheiten 12 benötigten Vorsprünge 15 beibehalten werden. Sie stören bei der Montage von Federklemmeinheiten 6 nicht. Aufgrund des Eingriffs in die Aussparungen 34 bewirken sie sogar eine günstige Verdrehsicherung der Federklemmeinheit 6.In addition to the passage opening 32, the mounting extension 26 has four recesses 34 for receiving the projections 15. The mounting plate 3 therefore need not be changed when using spring clamp units 6. In particular, the projections 15 that are actually only required when using screw clamping units 12 can be retained. They do not interfere with the assembly of spring clamp units 6. Due to the engagement in the recesses 34 they even cause a favorable rotation of the spring clamp unit. 6

In FIG 6 ist eine Schnittdarstellung durch eine montierte Federklemmeinheit 6 gezeigt. Ein durch die Leiteröffnung 8 eingeführter und in der Federzone 31 zwischen dem Klemmarm 22 und dem Halteschenkel 24 eingeklemmter elektrischer Leiter 35 wird mittels eines durch die Werkzeugöffnung 10 eingeführten und an der Abstützkontur 25 abgestützten Werkzeugs 36 gelöst. Aufgrund der Abstützung kann das Werkzeug 36 das Federteil 16 weiter zusammenpressen und damit die Klemmkraftwirkung aufheben. Der elektrische Leiter 35 lässt sich dann ohne Probleme wieder entnehmen. Statt an der Abstützkontur 25 kann das Werkzeugs 36 auch an einem innen an der Klemmenabdeckung 7 angeformten Fortsatz 37 abgestützt werden.In FIG. 6 is a sectional view through an assembled spring clamp unit 6 is shown. An inserted through the conductor opening 8 and in the spring zone 31 between the clamping arm 22 and the holding leg 24 pinched electrical conductor 35 is released by means of a tool through the opening 10 and supported on the Abstützkontur 25 tool 36. Due to the support, the tool 36, the spring member 16 continue to compress and thus cancel the clamping force effect. The electrical conductor 35 can then be removed again without problems. Instead of the support contour 25, the tool 36 can also be supported on an integrally formed on the terminal cover 7 extension 37.

Claims (6)

Elektrisches Gerät mit einer Anschlusszone (2) und mit einer in der Anschlusszone (2) montierten Federklemmeinheit (6), mittels derer mindestens ein elektrischer Leiter (35) elektrisch anschließbar ist, wobei a) die Federklemmeinheit (6) mindestens ein Federteil (16, 17) sowie ein Trägerteil (18) mit einem Halteschenkel (24) und einem Montageschenkel (27) umfasst, b) eine erste und eine zweite Federzone (30, 31) auf einander gegenüber liegenden Seiten des Halteschenkels (24) vorgesehen sind, c) das Federteil (16, 17) an dem Halteschenkel (24) angebracht ist und je nach aktuellem Klemmzustand die erste und die zweite Federzone (30, 31) mehr oder weniger weit ausfüllt, d) der Montageschenkel (27) sich ausgehend vom Halteschenkel (24) in Richtung der ersten Federzone (30) erstreckt und mit einem Montagefortsatz (26) weiter reicht als die erste Federzone (30), und e) der Montagefortsatz (26) in seinem über die erste Federzone (30) hinausreichenden Bereich mittels einer Schraubverbindung an der Anschlusszone (2) befestigt ist. Electrical device with a connection zone (2) and with a spring clamp unit (6) mounted in the connection zone (2), by means of which at least one electrical conductor (35) can be electrically connected, a) the spring clamping unit (6) comprises at least one spring part (16, 17) and a carrier part (18) with a holding leg (24) and a mounting leg (27), b) a first and a second spring zone (30, 31) are provided on mutually opposite sides of the retaining leg (24), c) the spring part (16, 17) is attached to the retaining limb (24) and, depending on the current clamping state, fills the first and second spring zones (30, 31) more or less widely, d) the mounting leg (27) extending from the holding leg (24) in the direction of the first spring zone (30) and with a mounting extension (26) extends further than the first spring zone (30), and e) the mounting extension (26) is fastened in its region extending beyond the first spring zone (30) by means of a screw connection to the connection zone (2). Elektrisches Gerät nach Anspruch 1, dadurch gekennzeichnet, dass die Anschlusszone (2) zur Montage der Federklemmeinheit (6) eine erste Gewindebohrung (5) und zur Montage einer anstelle der Federklemmeinheit (6) vorgesehenen Schraubklemmeinheit (12) eine zweite Gewindebohrung (4) aufweist.Electrical device according to claim 1, characterized in that the connection zone (2) for mounting the spring clamping unit (6) has a first threaded bore (5) and a second threaded bore (4) for mounting a screw clamping unit (12) provided instead of the spring clamping unit (6) , Elektrisches Gerät nach Anspruch 2, dadurch gekennzeichnet, dass die erste Gewindebohrung (5) tiefer im Gehäuseinneren liegt als die zweite Gewindebohrung (4).Electrical device according to claim 2, characterized in that the first threaded bore (5) lies deeper inside the housing than the second threaded bore (4). Elektrisches Gerät nach Anspruch 1, dadurch gekennzeichnet, dass die Federklemmeinheit (6) vollständig vormontiert ist.Electrical device according to claim 1, characterized in that the spring clamping unit (6) is completely pre-assembled. Elektrisches Gerät nach Anspruch 1, dadurch gekennzeichnet, dass das Trägerteil (18) einstückig ausgebildet ist.Electrical device according to claim 1, characterized in that the carrier part (18) is integrally formed. Elektrisches Gerät nach Anspruch 1, dadurch gekennzeichnet, dass sich das Trägerteil (18) aus zwei mechanisch fest miteinander verbundenen Teilkomponenten zusammensetzt, wobei eine erste Teilkomponente den Halteschenkel (24) umfasst und eine zweite Teilkomponente zumindest den Montagefortsatz (26) des Montageschenkels (27) umfasst.Electrical device according to claim 1, characterized in that the carrier part (18) consists of two mechanically firmly interconnected subcomponents, wherein a first subcomponent comprises the holding leg (24) and a second subcomponent at least the mounting extension (26) of the mounting leg (27). includes.
EP07012787A 2007-06-29 2007-06-29 Electrical device with spring clip unit Not-in-force EP2009745B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT07012787T ATE490573T1 (en) 2007-06-29 2007-06-29 ELECTRICAL DEVICE HAVING A SPRING CLAMP UNIT
EP07012787A EP2009745B1 (en) 2007-06-29 2007-06-29 Electrical device with spring clip unit
DE502007005846T DE502007005846D1 (en) 2007-06-29 2007-06-29 Electrical device with a spring clamp unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07012787A EP2009745B1 (en) 2007-06-29 2007-06-29 Electrical device with spring clip unit

Publications (2)

Publication Number Publication Date
EP2009745A1 true EP2009745A1 (en) 2008-12-31
EP2009745B1 EP2009745B1 (en) 2010-12-01

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ID=38564489

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EP07012787A Not-in-force EP2009745B1 (en) 2007-06-29 2007-06-29 Electrical device with spring clip unit

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EP (1) EP2009745B1 (en)
AT (1) ATE490573T1 (en)
DE (1) DE502007005846D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2293387A1 (en) 2009-09-02 2011-03-09 Siemens Aktiengesellschaft Combination attachment element for attaching electric conductors

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29619139U1 (en) * 1995-11-06 1997-01-09 Siemens Ag Connector for Cageclamp connection technology
EP0893847A1 (en) * 1997-07-21 1999-01-27 Schneider Electric Sa Electrical device with elastical cage-type terminals
DE19934550A1 (en) * 1999-07-20 2001-02-08 Hager Electro Gmbh Connecting terminal for electrical leads, has several clamp devices for different conductor cross-sections on contact element, and screw and plug clamp device for large and small cross-sections

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29619139U1 (en) * 1995-11-06 1997-01-09 Siemens Ag Connector for Cageclamp connection technology
EP0893847A1 (en) * 1997-07-21 1999-01-27 Schneider Electric Sa Electrical device with elastical cage-type terminals
DE19934550A1 (en) * 1999-07-20 2001-02-08 Hager Electro Gmbh Connecting terminal for electrical leads, has several clamp devices for different conductor cross-sections on contact element, and screw and plug clamp device for large and small cross-sections

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2293387A1 (en) 2009-09-02 2011-03-09 Siemens Aktiengesellschaft Combination attachment element for attaching electric conductors

Also Published As

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DE502007005846D1 (en) 2011-01-13
ATE490573T1 (en) 2010-12-15
EP2009745B1 (en) 2010-12-01

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