EP1798819B1 - Electrical terminal - Google Patents
Electrical terminal Download PDFInfo
- Publication number
- EP1798819B1 EP1798819B1 EP06023809A EP06023809A EP1798819B1 EP 1798819 B1 EP1798819 B1 EP 1798819B1 EP 06023809 A EP06023809 A EP 06023809A EP 06023809 A EP06023809 A EP 06023809A EP 1798819 B1 EP1798819 B1 EP 1798819B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuating
- actuating cam
- clamping yoke
- insulating housing
- clamping
- 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.)
- Not-in-force
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- 239000004020 conductor Substances 0.000 claims description 44
- 230000006835 compression Effects 0.000 claims description 25
- 238000007906 compression Methods 0.000 claims description 25
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- 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
- H01R4/4872—Coil spring axially compressed to retain wire end
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- 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
- H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
- H01R4/5008—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using rotatable cam
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- 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
- H01R4/489—Clamped connections, spring connections utilising a spring, clip, or other resilient member spring force increased by screw, cam, wedge, or other fastening means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
- H01R9/24—Terminal blocks
- H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
Definitions
- the invention relates to an electrical terminal, in particular high-current terminal, with an insulating housing, with at least one bus bar, with at least one Wernergelan gleich and at least one arranged in the insulating actuator for opening and closing the Werzieran gleiches according to the preamble of claims 1 and 2.
- tension spring terminals have been used in industrial connection technology for decades.
- electrical terminals with screw connection have been used for decades.
- the clamping principle with tension spring clamps is similar to that of screwdriving technology. While a pull sleeve pulls the conductor against a current bar in the case of screw clamps, this task is taken over by a loop-shaped tension spring in the tension spring clamp.
- the preloaded tension spring is with an operating tool -. As a screwdriver - open, so that the conductor can be inserted through a passage opening in the clamping leg of the tension spring in the terminal compartment. After removal of the actuating tool, the conductor is pulled by the spring force against the voltage applied to the stop leg of the tension spring busbar.
- a modification of the above-described tension spring terminals represent electrical terminals with at least one Buchbügelan gleich as Federkraftklemman gleich.
- electrical conductors with a relatively large cross-section of preferably 35 mm 2 to 150 mm 2 can be connected due to the special design of the Werzelan gleiches.
- conductors with a cross-section of 1.5 mm 2 , 2.5 mm 2 , 4 mm 2 and 6 mm 2 are usually connected to "normal" spring-cage terminals, and conductors with cross-sections of 10 mm 2 to 35 mm 2 are used for more specific designs . Since higher currents can be transmitted via electrical conductors having a larger cross section, electrical terminals which are designed to connect such conductors with a large cross section are often also referred to as high current terminals. High current terminals are designed both with screw connection and with spring clamp connection.
- the Switzerlandbügelan Especially for use as high current terminals electrical terminals have been developed, the Wegbügelan somebody have, consisting of an approximately U-shaped clamping yoke and a compression spring.
- the compression spring is arranged in such a manner in the drawbar that it pulls the lower end of the drawbar against the underside of a busbar, so that there inserted through an opening in the clamping leg of the drawbar electrical conductor against the underside of the through openings of the clamping legs of the drawbar extending busbar is clamped.
- the opening of the nip of such a Switzerlandbügelan gleiches, to which the compression spring must be compressed axially, is possible with electrical terminals, which are designed for conductors with large cross-sections, only with the help of supporting measures.
- Such an electrical terminal with a Buchbügelan gleich is from the DE 198 17 924 C2 known.
- a feed rotary cylinder which is mounted in the insulating housing above the drawbar and coaxial with the compression spring of the Buchbügelan gleiches.
- the rotary cylinder has an external thread, so that it can be screwed by means of an axially insertable into the cylinder rotary tool in a formed in the insulating inner thread.
- the clamping point can be opened manually without much effort even when using compression springs with high spring force, the formation of the feed rotary cylinder and the internal thread in the insulating housing of the terminal are relatively expensive and therefore expensive.
- the DE 25 50 943 A1 discloses a screwless electrical clamp with a drawbar connection according to which the preamble of claims 1 and 2 has been formulated, comprising a tension spring, a compression spring and an actuating element in the form of a lever.
- known terminal is the insertion of the at least one conductor and the actuation of the actuating element for releasing the clamping device from one and the same side, so that less space is required for connecting and disconnecting the conductor.
- the lever provided as an actuating element has an operable from the mouth side of the receiving space for the conductor forth Ann.
- the lever has two arranged on different sides of a pivot axis arms, one of which acts on the tension spring and the other protrudes on the Leiterein arrangementsöfnung for the line having side of the housing from this.
- the present invention has for its object to provide an electrical terminal described above, which also allows a simple manual opening of the terminal point in the design of the Glasbügelan gleiches for conductors with large cross-sections and yet can be easily and thus produced inexpensively.
- the actuating element is designed as an actuating cam, which is mounted eccentrically in the insulating housing, that the actuating cam of a first position in which the Werneran gleich is closed, by means of an actuating tool, such as the tip of a screwdriver, is pivotable to a second position in which the Glasbügelan gleich is opened, so that an electrical conductor between the busbar and the lower edge of the passage opening can be inserted ,
- the actuating element is designed as an actuating cam, which is mounted eccentrically in the insulating housing, eliminates the costly design of an inner housing for the at DE 198 17 924 C2 used rotary cylinder. Also, the formation of an actuating cam is easier than the formation of a feed rotary cylinder. In addition, an opening of the nip is easily possible by pivoting the actuating cam, so that the opening of the nip can be done very quickly. The force required to compress the compression spring can thereby be easily applied, that the actuating cam is pivoted by means of an actuating tool. As a result, a sufficiently large lever arm is achieved, so that the force to be expended is limited even with a compression spring with a high spring force and thus can be applied by a fitter without any problems.
- the actuating cam remains self-locking in the second position in which the tension bow connection is open. This ensures that an opened to insert the electrical conductor to be connected Huaweibügelan gleich can not unintentionally spring back into the closed state.
- the self-locking of the actuating cam in the second position is realized according to the first alternative simply by the fact that the actuating cam in the second position does not press with its apex on the U-back of the tension bow, but is slightly pivoted beyond the vertex. Before the compression spring can relax again, whereby the Switzerlandbügelan gleich is closed, the compression spring must therefore first be compressed a little further axially against their spring force.
- the self-locking of the actuating cam in the second position can also be realized in that the actuating cam on having the arcuate storage area adjacent flattened locking portion, which cooperates in the second position of the actuating cam - Wervousan gleich - such with the U-back of the drawbar that the actuating cam only by an active pivoting means of the operating tool in the first position - Wergelan gleich closed - spent can.
- This can be achieved by correspondingly high frictional forces to be overcome between the flattened latching area of the actuating cam and the U-back of the drawbar.
- the actuating cam is mounted in the insulating housing in that it has at least one, preferably two pivot pins which are held in corresponding receptacles in one or both side walls of the insulating housing.
- the actuating cam is supported on a correspondingly formed bearing surface in the interior of the insulating housing, for which purpose the actuating cam has an arcuate bearing area.
- the actuating cam For pivoting the actuating cam from the first position to the second position and vice versa, the actuating cam preferably has a receptacle into which the tip of the actuating tool can be inserted.
- the receptacle is arranged in the actuating cam so that an inserted through the actuating opening in the insulating housing actuating tool can easily engage in the recording.
- a receptacle in the actuating cam of the actuating cam may also have a handle portion, with the help of a fitter - by hand or with a tool - can pivot the actuating cam from one position to the other position.
- Fig. 1 is an electrical terminal 1 with an insulating 2, one arranged in the insulating housing 2 busbar 3 and two Werzierbügelan somebodyn shown, wherein the two Werzier kanna each having an approximately U-shaped clamping yoke 4 and arranged in the yoke 4 helical compression spring 5.
- the clamping yoke 4 has two each a passage opening 6 for insertion of an electrical conductor 7 to be connected clamping leg 8 and the clamping legs 8 interconnecting U-back 9.
- the busbar 3 is inserted, so that the passage openings 6 engage around the busbar 3.
- the compression spring 5 is arranged between the U-back 9 of the drawbar 4 and the busbar 3, that the compression spring 5, the lower edge 10 of the passage opening 6 against the busbar 3, ie in the illustrated arrangement upwards, pulls.
- the compression spring 5 To open the Switzerlandbügelan gleiches, ie for insertion of an electrical conductor to be connected in the passage opening 6 in the clamping leg 8, the compression spring 5 must be compressed axially, so that the nip between the lower edge 10 of the passage opening 6 and the busbar 3 is opened ( Fig. 2 ). If the electrical conductor 7 inserted into the passage opening 6, the yoke 4 is pressed due to the spring force of the compression spring 5 upwards, whereby the electrical conductor 7 is pressed by the lower edge 10 of the passage opening 6 against the busbar 3.
- the busbar 3 is approximately U-shaped, wherein the side walls of the busbar 3 are slotted, so that in each case a clamping leg 8 of the drawbar 4 with his Lower edge 10 within the slot can move up against the underside of the busbar 3.
- two conductor openings 11 and, moreover, also two actuation openings 12 are provided in the insulating housing 2 - because of the cut representation only indicated.
- a corresponding actuating tool for example, the tip 14 of a screwdriver, for pivoting of the actuating cam 13 formed as an actuating element can be introduced.
- the compression spring 5 can be axially compressed and thereby the clamping yoke 4 are moved downward, whereby the Switzerlandbügelanschluß is opened so that an electrical conductor to be connected 7 through the conductor insertion opening 11 into the passage opening 6 in the clamping leg.
- the actuating cam 13 For storage of the actuating cam 13 in the insulating housing 2, the actuating cam 13 has two pivot pins 15, which are held in corresponding receptacles in the side walls 16 of the insulating housing 2.
- the actuating cam 13 has an arcuate bearing region 17, with which the actuating cam 13 is additionally supported on a corresponding bearing surface 18 in the insulating housing 2. How out Fig. 1 it can be seen, the support surface 18 extends perpendicular to the side walls 16 of the insulating housing 2.
- the actuating cam 13 and the pivot pin 15 are integrally connected to each other and made of plastic.
- the actuating cam 13 is arranged and formed so that it remains self-locking in the second position in which the Switzerlandbügelanschluß is opened.
- a receptacle 20 for the tip 14 of the actuating tool is formed in the actuating cam 13.
- the tip 14 of the operating tool can be easily inserted through the actuating opening 12 in the insulating housing 2 and in the receptacle 20 in the actuating cam 13.
- the receptacle 20 thus facilitates together with the actuating tool, the movement of the actuating cam 13 from the first position to the second position and vice versa, and thus the total actuation of the inventive electrical terminal 1.
- the receptacle 20 is substantially opposite arranged from the storage area 17 of the actuating cam 13.
- the insulating housing 2 can - which is not shown here - depending on a stop for the defined finding the first position (Zugbügelanschluß closed) and the second position (Zugbügelanschluß open) may be formed.
- a limitation of the maximum pivoting angle of the actuating cam 13 can be achieved. The attacks can be easily realized by an appropriate dimensioning of the actuating opening 12 in the insulating housing 2.
Landscapes
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Description
Die Erfindung betrifft eine elektrische Klemme, insbesondere Hochstromklemme, mit einem Isoliergehäuse, mit mindestens einer Stromschiene, mit mindestens einem Zugbügelanschluss und mit mindestens einem in dem Isoliergehäuse angeordneten Betätigungselement zum Öffnen und Schließen des Zugbügelanschlusses gemäß dem Oberbegriff der Patentansprüche 1 und 2.The invention relates to an electrical terminal, in particular high-current terminal, with an insulating housing, with at least one bus bar, with at least one Zugbügelanschluss and at least one arranged in the insulating actuator for opening and closing the Zugbügelanschlusses according to the preamble of
Elektrische Klemmen, mit als Zugfedern ausgebildeten Kontaktelementen, die häufig als Zugfederklemmen bezeichnet werden, werden in der industriellen Verbindungstechnik seit Jahrzehnten verwendet. Daneben werden seit Jahrzehnten elektrische Klemmen mit Schraubanschluß eingesetzt. Das Klemmprinzip bei Zugfederklemmen ist ähnlich dem der Schraubtechnik. Während bei Schraubklemmen eine Zughülse durch die Betätigung der Klemmschraube den Leiter gegen einen Strombalken zieht, wird bei der Zugfederklemme diese Aufgabe von einer schlaufenförmig gebogenen Zugfeder übernommen. Die vorgespannte Zugfeder wird mit einem Betätigungswerkzeug - z. B. einem Schraubendreher - geöffnet, so dass der Leiter durch eine Durchtrittsöffnung im Klemmschenkel der Zugfeder in den Anschlußraum eingeführt werden kann. Nach dem Entfernen des Betätigungswerkzeuges wird der Leiter durch die Federkraft gegen die an dem Anschlagschenkel der Zugfeder anliegende Stromschiene gezogen.Electrical terminals, with contact elements designed as tension springs, which are often referred to as tension spring terminals, have been used in industrial connection technology for decades. In addition, electrical terminals with screw connection have been used for decades. The clamping principle with tension spring clamps is similar to that of screwdriving technology. While a pull sleeve pulls the conductor against a current bar in the case of screw clamps, this task is taken over by a loop-shaped tension spring in the tension spring clamp. The preloaded tension spring is with an operating tool -. As a screwdriver - open, so that the conductor can be inserted through a passage opening in the clamping leg of the tension spring in the terminal compartment. After removal of the actuating tool, the conductor is pulled by the spring force against the voltage applied to the stop leg of the tension spring busbar.
Eine Abwandlung der zuvor beschriebenen Zugfederklemmen stellen elektrische Klemmen mit mindestens einem Zugbügelanschluss als Federkraftklemmanschluss dar. Mit derartigen elektrischen Klemmen können aufgrund der speziellen Ausgestaltung des Zugbügelanschlusses elektrische Leiter mit einem relativ großen Querschnitt von vorzugsweise 35 mm2 bis 150 mm2 angeschlossen werden. Im Unterschied dazu werden an "normale" Zugfederklemmen zumeist Leiter mit einem Querschnitt von 1,5 mm2, 2,5 mm2, 4 mm2 und 6 mm2 sowie bei spezielleren Ausgestaltungen Leiter mit Querschnitten von 10 mm2 bis 35 mm2 angeschlossen. Da über elektrische Leiter mit einem größeren Querschnitt höhere Ströme übertragen werden können, werden elektrische Klemmen, die zum Anschluss derartiger Leiter mit großem Querschnitt ausgebildet sind, häufig auch als Hochstromklemmen bezeichnet. Hochstromklemmen werden sowohl mit Schraubanschluss als auch mit Federkraftklemmanschluss ausgebildet. Die für Hochstromklemmen notwendigen hohen Klemmkräfte des Schraub- oder Federkraftklemmanschlusses werden im Stand der Technik dadurch erreicht, daß die jeweiligen Klemmanschlüsse, d.h. die Kontaktelemente, ausgehend von den elektrischen Klemmen zum Anschluss "normale" Leiter stärker ausgelegt werden. Da jedoch auch Hochstromklemmen zum Öffnen der Klemmstellen gegen die jeweilige Klemmkraft des Klemmanschlusses manuell betätigt werden müssen, sind der Maximierung der Konstruktionsart der herkömmlichen Klemmen Grenzen gesetzt, da häufig schon bei Leiterquerschnitten ab 50 mm2 kaum noch zu akzeptierende Handhabungskräfte erforderlich werden.A modification of the above-described tension spring terminals represent electrical terminals with at least one Zugbügelanschluss as Federkraftklemmanschluss. With such electrical terminals electrical conductors with a relatively large cross-section of preferably 35 mm 2 to 150 mm 2 can be connected due to the special design of the Zugbügelanschlusses. In contrast to this, conductors with a cross-section of 1.5 mm 2 , 2.5 mm 2 , 4 mm 2 and 6 mm 2 are usually connected to "normal" spring-cage terminals, and conductors with cross-sections of 10 mm 2 to 35 mm 2 are used for more specific designs , Since higher currents can be transmitted via electrical conductors having a larger cross section, electrical terminals which are designed to connect such conductors with a large cross section are often also referred to as high current terminals. High current terminals are designed both with screw connection and with spring clamp connection. The high clamping forces of the screw or spring terminal connection required for high-current terminals are achieved in the prior art by making the respective terminal connections, ie the contact elements, stronger starting from the electrical terminals for connection to "normal" conductors. However, since high current terminals must be manually operated to open the terminal points against the respective clamping force of the terminal connection, the maximization of the design of the conventional terminals limits, as often even with conductor cross sections from 50 mm 2 barely acceptable handling forces are required.
Speziell zum Einsatz als Hochstromklemmen sind elektrische Klemmen entwickelt worden, die Zugbügelanschlüsse aufweisen, die aus einem etwa U-förmigen Zugbügel und einer Druckfeder bestehen. Die Druckfeder ist dabei derart in dem Zugbügel angeordnet, dass sie das untere Ende des Zugbügels gegen die Unterseite einer Stromschiene zieht, so dass ein dort durch eine Durchtrittsöffnung im Klemmschenkel des Zugbügels eingeführter elektrischer Leiter gegen die Unterseite der sich durch die Durchtrittsöffnungen der Klemmschenkel des Zugbügels erstreckende Stromschiene festgeklemmt wird. Das Öffnen der Klemmstelle eines derartigen Zugbügelanschlusses, wozu die Druckfeder axial zusammengedrückt werden muss, ist bei elektrischen Klemmen, die für Leiter mit großen Querschnitten ausgelegt sind, nur mit Hilfe von unterstützenden Maßnahmen möglich.Especially for use as high current terminals electrical terminals have been developed, the Zugbügelanschlüsse have, consisting of an approximately U-shaped clamping yoke and a compression spring. The compression spring is arranged in such a manner in the drawbar that it pulls the lower end of the drawbar against the underside of a busbar, so that there inserted through an opening in the clamping leg of the drawbar electrical conductor against the underside of the through openings of the clamping legs of the drawbar extending busbar is clamped. The opening of the nip of such a Zugbügelanschlusses, to which the compression spring must be compressed axially, is possible with electrical terminals, which are designed for conductors with large cross-sections, only with the help of supporting measures.
Eine derartige elektrische Klemme mit einem Zugbügelanschluss ist aus der
Durch die Ausbildung des Vorschub-Rotationszylinders kann zwar auch bei Verwendung von Druckfedern mit hoher Federkraft die Klemmstelle manuell ohne großen Kraftaufwand geöffnet werden, die Ausbildung des Vorschub-Rotationszylinders sowie des Innengewindes in dem Isoliergehäuse der Klemme sind jedoch relativ aufwendig und damit teuer.Due to the design of the feed rotary cylinder, the clamping point can be opened manually without much effort even when using compression springs with high spring force, the formation of the feed rotary cylinder and the internal thread in the insulating housing of the terminal are relatively expensive and therefore expensive.
Die
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine eingangs beschriebene elektrische Klemme zur Verfügung zu stellen, die auch bei Auslegung des Zugbügelanschlusses für Leiter mit großen Querschnitten ein einfaches manuelles Öffnen der Klemmstelle ermöglicht und dennoch einfach und damit kostengünstig hergestellt werden kann.The present invention has for its object to provide an electrical terminal described above, which also allows a simple manual opening of the terminal point in the design of the Zugbügelanschlusses for conductors with large cross-sections and yet can be easily and thus produced inexpensively.
Diese Aufgabe ist bei der in der Rede stehenden elektrischen Klemme mit den Merkmalen des Patentanspruchs 1 sowie mit den Merkmalen des Patentanspruchs 2 gelöst.This object is achieved in the standing in the speech electrical terminal with the features of
Das Betätigungselement ist als Betätigungsnocken ausgebildet, der derart exzentrisch im Isoliergehäuse gelagert ist, dass der Betätigungsnocken aus einer ersten Position, in der der Zugbügelanschluss geschlossen ist, mittels eines Betätigungswerkzeugs, beispielsweise der Spitze eines Schraubendrehers, in eine zweite Position verschwenkbar ist, in der der Zugbügelanschluss geöffnet ist, so dass ein elektrischer Leiter zwischen der Stromschiene und der Unterkante der Durchtrittsöffnung eingesteckt werden kann.The actuating element is designed as an actuating cam, which is mounted eccentrically in the insulating housing, that the actuating cam of a first position in which the Zugbügelanschluss is closed, by means of an actuating tool, such as the tip of a screwdriver, is pivotable to a second position in which the Zugbügelanschluss is opened, so that an electrical conductor between the busbar and the lower edge of the passage opening can be inserted ,
Dadurch, dass das Betätigungselement als Betätigungsnocken ausgebildet ist, der exzentrisch im Isoliergehäuse gelagert ist, entfällt die aufwendige Ausbildung eines Innengehäuses für den bei der
Durch beide alternativen Ausgestaltungen wird dabei erreicht, dass der Betätigungsnocken in der zweiten Position, in der der Zugbügelanschluss geöffnet ist, selbsthemmend verbleibt. Dadurch wird sichergestellt, dass ein zum Einführen des anzuschließenden elektrischen Leiters geöffneter Zugbügelanschluss nicht ungewollt in den geschlossenen Zustand zurückfedern kann. Die Selbsthemmung des Betätigungsnockens in der zweiten Position wird gemäß der ersten Alternative einfach dadurch realisiert, dass der Betätigungsnocken in der zweiten Position nicht mit seinem Scheitelpunkt auf dem U-Rücken des Zugbügels drückt, sondern geringfügig über den Scheitelpunkt hinaus verschwenkt ist. Bevor die Druckfeder sich wieder entspannen kann, wodurch der Zugbügelanschluss geschlossen wird, muss die Druckfeder somit zunächst noch ein kleines Stück weiter axial gegen ihre Federkraft zusammengedrückt werden.It is achieved by both alternative embodiments that the actuating cam remains self-locking in the second position in which the tension bow connection is open. This ensures that an opened to insert the electrical conductor to be connected Zugbügelanschluss can not unintentionally spring back into the closed state. The self-locking of the actuating cam in the second position is realized according to the first alternative simply by the fact that the actuating cam in the second position does not press with its apex on the U-back of the tension bow, but is slightly pivoted beyond the vertex. Before the compression spring can relax again, whereby the Zugbügelanschluss is closed, the compression spring must therefore first be compressed a little further axially against their spring force.
Daneben kann die Selbsthemmung des Betätigungsnockens in der zweiten Position auch dadurch realisiert werden, dass der Betätigungsnocken einen an den bogenförmigen Lagerbereich angrenzenden abgeflachten Rastbereich aufweist, der in der zweiten Position des Betätigungsnockens - Zugbügelanschluss geöffnet - derart mit dem U-Rücken des Zugbügels zusammenwirkt, dass der Betätigungsnocken nur durch ein aktives Verschwenken mittels des Betätigungswerkzeugs in die erste Position - Zugbügelanschluss geschlossen - verbracht werden kann. Dies kann durch entsprechend hohe zu überwindende Reibkräfte zwischen dem abgeflachten Rastbereich des Betätigungsnockens und dem U-Rücken des Zugbügels erreicht werden.In addition, the self-locking of the actuating cam in the second position can also be realized in that the actuating cam on having the arcuate storage area adjacent flattened locking portion, which cooperates in the second position of the actuating cam - Zugbügelanschluss - such with the U-back of the drawbar that the actuating cam only by an active pivoting means of the operating tool in the first position - Zugbügelanschluss closed - spent can. This can be achieved by correspondingly high frictional forces to be overcome between the flattened latching area of the actuating cam and the U-back of the drawbar.
Vorzugsweise ist der Betätigungsnocken dadurch in dem Isoliergehäuse gelagert, dass er mindestens einen, vorzugsweise zwei Drehzapfen aufweist, die in entsprechende Aufnahmen in einer bzw. beiden Seitenwänden des Isoliergehäuses gehalten sind. Alternativ, vorzugsweise jedoch zusätzlich, stützt sich der Betätigungsnocken an einer entsprechend ausgebildeten Auflagefläche im Inneren des Isoliergehäuses ab, wozu der Betätigungsnocken einen bogenförmigen Lagerbereich aufweist.Preferably, the actuating cam is mounted in the insulating housing in that it has at least one, preferably two pivot pins which are held in corresponding receptacles in one or both side walls of the insulating housing. Alternatively, but preferably additionally, the actuating cam is supported on a correspondingly formed bearing surface in the interior of the insulating housing, for which purpose the actuating cam has an arcuate bearing area.
Zum Verschwenken des Betätigungsnockens aus der ersten Position in die zweite Position und umgekehrt, weist der Betätigungsnocken vorzugsweise eine Aufnahme auf, in die die Spitze des Betätigungswerkzeugs eingesteckt werden kann. Die Aufnahme ist dabei so in dem Betätigungsnocken angeordnet, dass ein durch die Betätigungsöffnung im Isoliergehäuse eingestecktes Betätigungswerkzeug leicht in die Aufnahme eingreifen kann. Alternativ zu der Ausbildung einer Aufnahme in dem Betätigungsnocken kann der Betätigungsnocken auch einen Griffabschnitt aufweisen, mit dessen Hilfe ein Monteur - von Hand oder mit einem Werkzeug - den Betätigungsnocken von der einen Position in die andere Position verschwenken kann.For pivoting the actuating cam from the first position to the second position and vice versa, the actuating cam preferably has a receptacle into which the tip of the actuating tool can be inserted. The receptacle is arranged in the actuating cam so that an inserted through the actuating opening in the insulating housing actuating tool can easily engage in the recording. As an alternative to the formation of a receptacle in the actuating cam of the actuating cam may also have a handle portion, with the help of a fitter - by hand or with a tool - can pivot the actuating cam from one position to the other position.
Im Einzelnen gibt es nun eine Vielzahl von Möglichkeiten, die erfindungsgemäße elektrische Klemme auszugestalten und weiterzubilden. Dazu wird verwiesen einerseits auf die dem Patentanspruch 1 nachgeordneten Patentansprüche, andererseits auf die Beschreibung eines bevorzugten Ausführungsbeispiels in Verbindung mit der Zeichnung. In der Zeichnung zeigen
- Fig. 1
- eine Seiteneinsicht einer erfindungsgemäßen elektrischen Klem- me, teilweise geschnitten,
- Fig. 2
- eine vergrößerte Darstellung des Zugbügelanschlusses und des Betätigungsnockens, in der zweiten Position (Zugbügelanschluß geöffnet) und
- Fig. 3
- eine vergrößerte Darstellung des Zugbügelanschlusses und des Betätigungsnockens, mit einem angeschlossenen elektrischen Leiter.
- Fig. 1
- a side view of an electrical terminal according to the invention, partially cut,
- Fig. 2
- an enlarged view of the Zugbügelanschlusses and the actuating cam, in the second position (Zugbügelanschluß open) and
- Fig. 3
- an enlarged view of the Zugbügelanschlusses and the actuating cam, with a connected electrical conductor.
In
Die Druckfeder 5 ist derart zwischen dem U-Rücken 9 des Zugbügels 4 und der Stromschiene 3 angeordnet, daß die Druckfeder 5 die Unterkante 10 der Durchtrittsöffnung 6 gegen die Stromschiene 3, d.h. in der dargestellten Anordnung nach oben, zieht. Zum Öffnen des Zugbügelanschlusses, d.h. zum Einstecken eines anzuschließenden elektrischen Leiters in die Durchtrittsöffnung 6 im Klemmschenkel 8 muß die Druckfeder 5 axial zusammengedrückt werden, so daß die Klemmstelle zwischen der Unterkante 10 der Durchtrittsöffnung 6 und der Stromschiene 3 geöffnet wird (
Bei dem dargestellten Ausführungsbeispiel ist auch die Stromschiene 3 etwa U-förmig ausgebildet, wobei die Seitenwände der Stromschiene 3 geschlitzt sind, so daß sich jeweils ein Klemmschenkel 8 des Zugbügels 4 mit seiner Unterkante 10 innerhalb des Schlitzes nach oben gegen die Unterseite der Stromschiene 3 bewegen kann.In the illustrated embodiment, the
Zum Einführen der anzuschließenden elektrischen Leiter 7 in die beiden Zugbügelanschlüsse sind in dem Isoliergehäuse 2 zwei - aufgrund der geschnittenen Darstellung nur angedeutete - Leitereinführungsöffnungen 11 und darüber hinaus auch zwei Betätigungsöffnungen 12 vorgesehen. Durch die Betätigungsöffnungen 12 kann dabei ein entsprechendes Betätigungswerkzeug, beispielsweise die Spitze 14 eines Schraubendrehers, zum Verschwenken des als Betätigungsnocken 13 ausgebildeten Betätigungselements eingeführt werden. Durch einfaches Verschwenken des Betätigungsnockens 13 mittels des Betätigungswerkzeugs kann dabei die Druckfeder 5 axial zusammengedrückt und dadurch der Zugbügel 4 nach unten bewegt werden, wodurch der Zugbügelanschluß geöffnet wird, so daß ein anzuschließender elektrischer Leiter 7 durch die Leitereinführungsöffnung 11 in die Durchtrittsöffnung 6 im Klemmschenkel 8 des Zugbügels 4 eingeschoben werden kann. Wird der Betätigungsnocken 13 in die erste Position - linker Zugbügelanschluß in
Zur Lagerung des Betätigungsnockens 13 in dem Isoliergehäuse 2 weist der Betätigungsnocken 13 zwei Drehzapfen 15 auf, die in entsprechenden Aufnahmen in den Seitenwänden 16 des Isoliergehäuses 2 gehalten sind. Darüber hinaus weist der Betätigungsnocken 13 einen bogenförmigen Lagerbereich 17 auf, mit dem sich der Betätigungsnocken 13 zusätzlich an einer korrespondierenden Auflagefläche 18 im Isoliergehäuse 2 abstützt. Wie aus
Der Betätigungsnocken 13 ist so angeordnet und ausgebildet, daß er in der zweiten Position, in der der Zugbügelanschluß geöffnet ist, selbsthemmend verbleibt. Hierzu weist der Betätigungsnocken 13 einen an den bogenförmigen Lagerbereich 17 angrenzenden abgeflachten Rastbereich 19 auf, der in der zweiten Position so auf dem U-Rücken 9 des Zugbügels 4 aufliegt, daß der Betätigungsnocken 13 nur durch ein aktives Verschwenken mittels des Betätigungswerkzeugs aus der zweiten Position gelöst und in die erste Position zurückgeführt werden kann. Dadurch wird gewährleistet, daß ein geöffneter Zugbügelanschluß beim Einstecken eines anzuschließenden elektrischen Leiters 7 in seiner geöffneten Stellung verbleibt, so daß der Monteur die Hände zum Einführen des elektrischen Leiters 7 in die Leitereinführungsöffnung 11 frei hat und nicht gleichzeitig den Betätigungsnocken 13 mit Hilfe des Betätigungswerkzeugs in der zweiten Stellung halten muß.The
Zum einfachen Verschwenken des Betätigungsnockens 13 aus der ersten Position in die zweite Position und umgekehrt ist im Betätigungsnocken 13 eine Aufnahme 20 für die Spitze 14 des Betätigungswerkzeugs ausgebildet. Somit kann die Spitze 14 des Betätigungswerkzeugs einfach durch die Betätigungsöffnung 12 in das Isoliergehäuse 2 und in die Aufnahme 20 im Betätigungsnocken 13 eingeführt werden. Beim Verschwenken des Betätigungsnockens 13 mit Hilfe des Betätigungswerkzeugs besteht dann nicht die Gefahr, daß die Spitze 14 des Betätigungswerkzeugs von dem Betätigungsnocken 13 abrutscht. Die Aufnahme 20 erleichtert somit zusammen mit dem Betätigungswerkzeug das Verbringen des Betätigungsnockens 13 aus der ersten Position in die zweite Position und umgekehrt und somit insgesamt die Betätigung der erfindungsgemäßen elektrischen Klemme 1. Wie aus den Figuren ersichtlich ist, ist dabei die Aufnahme 20 im wesentlichen gegenüberliegend vom Lagerbereich 17 des Betätigungsnockens 13 angeordnet.For easy pivoting of the
In dem Isoliergehäuse 2 kann - was hier jedoch nicht dargestellt ist - je ein Anschlag für das definierte Auffinden der ersten Position (Zugbügelanschluß geschlossen) und der zweiten Position (Zugbügelanschluß geöffnet) ausgebildet sein. Dadurch kann eine Begrenzung des maximalen Schwenkwinkels des Betätigungsnockens 13 erreicht werden. Die Anschläge können dabei einfach durch eine entsprechende Dimensionierung der Betätigungsöffnung 12 im Isoliergehäuse 2 realisiert sein.In the insulating
Claims (10)
- Electrical terminal, in particular a high current terminal having an insulating housing (2), having at least one conductor bar (3), having at least one clamping yoke connection and having at least one actuating element arranged in the insulating housing (2) for opening and closing the clamping yoke connection, wherein the clamping yoke connection has a U-shaped clamping yoke (4) and a compression spring (5), the clamping yoke (4) has two clamping legs (8) each having a through opening (6) for inserting the electric lead (7) and a U-shaped back (9) that connects the clamping legs to each other and grips the conductor bar (3) with its through openings (6), the compression spring (5) is arranged between the U-shaped back (9) of the clamping yoke (4) and the conductor bar (3) in such a manner that the compression spring (5) has to be axially compressed to open the clamping yoke connection so that an electric lead (7) to be connected can be inserted between the conductor bar (3) and the bottom edge (10) of the through openings (6), and the insulating housing (2) has at least one lead-insertion opening (11) for inserting the electric lead (7) to be connected and at least one actuating opening (12) for moving the actuating element from a first position into a second position,
wherein the actuating element is formed as an actuating cam (13) that is eccentrically supported in the insulating housing (2) in such a manner that the actuating cam (13) can be pivoted using an actuating tool, for example the tip (14) of a screwdriver, from the first position, in which the clamping yoke connection is closed, into the second position, in which the clamping yoke connection is opened, so that an electric lead (7) can be inserted between the conductor bar (3) and the bottom edge (10) of the through opening (6)
characterized in
that the actuating cam is pivoted slightly beyond the apex in the second position,
so that the actuating cam (13) self-impedingly remains in the second position. - Electrical terminal, in particular a high current terminal having an insulating housing (2), having at least one conductor bar (3), having at least one clamping yoke connection and having at least one actuating element arranged in the insulating housing (2) for opening and closing the clamping yoke connection, wherein the clamping yoke connection has a U-shaped clamping yoke (4) and a compression spring (5), the clamping yoke (4) has two clamping legs (8) each having a through opening (6) for inserting the electric lead (7) and a U-shaped back (9) that connects the clamping legs to each other and grips the conductor bar (3) with its through openings (6), the compression spring (5) is arranged between the U-shaped back (9) of the clamping yoke (4) and the conductor bar (3) in such a manner that the compression spring (5) has to be axially compressed to open the clamping yoke connection so that an electric lead (7) to be connected can be inserted between the conductor bar (3) and the bottom edge (10) of the through openings (6), and the insulating housing (2) has at least one lead-insertion opening (11) for inserting the electric lead (7) to be connected and at least one actuating opening (12) for moving the actuating element from a first position into a second position,
wherein the actuating element is formed as an actuating cam (13) that is eccentrically supported in the insulating housing (2) in such a manner that the actuating cam (13) can be pivoted using an actuating tool, for example the tip (14) of a screwdriver, from the first position, in which the clamping yoke connection is closed, into the second position, in which the clamping yoke connection is opened, so that an electric lead (7) can be inserted between the conductor bar (3) and the bottom edge (10) of the through opening (6)
characterized in
that the actuating cam (13) has an arc-shaped bearing region (17), with which the actuating cam (13) is supported on a corresponding supporting surface (18) in the insulating housing (2) and
that the actuating cam (13) has a flat catch area (19) adjacent to the arc-shaped bearing region (17), which interacts with the U-shaped back (9) of the clamping yoke (4) in the second position of the actuating cam (13) in such a manner that the actuating cam (13) can be pivoted out of the second position only with active pivoting using an actuating tool,
so that the actuating cam (13) self-impedingly remains in the second position. - Electrical terminal according to claim 1 or 2, characterized in that the actuating cam (13) has at least one swivel pin (15), by which the actuating cam (13) is positioned in a corresponding receptacle in a side wall (16) of the insulating housing (2).
- Electrical terminal according to claim 3, characterized in that the actuating cam (13) has two swivel pins (15), by which the actuating cam (13) is positioned in a corresponding receptacle in both side walls (16) of the insulating housing (2).
- Electrical terminal according to claim 3 or 4, characterized in that the swivel pin or pins (15) is/are integrally connected with the actuating cam (13) and, in particular, is/are made of plastic.
- Electrical terminal according to any one of claims 1 to 5, characterized in that the actuating cam (13) has a receptacle (20) for the tip (14) of an actuating tool.
- Electrical terminal according to claim 6, characterized in that the receptacle (20) is arranged essentially opposite the bearing region (17).
- Electrical terminal according to any one of claims 1 to 7, characterized in that the actuating cam (13) has a grip section.
- Electrical terminal according to claim 8, characterized in that the grip section is arranged essentially opposite the bearing region (17).
- Electrical terminal according to any one of claims 1 to 9, characterized in that at least one stop for the first position and/or the second position of the actuating cam (13) is formed in the insulating housing (2).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005060410A DE102005060410A1 (en) | 2005-12-15 | 2005-12-15 | Electrical terminal |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1798819A2 EP1798819A2 (en) | 2007-06-20 |
EP1798819A3 EP1798819A3 (en) | 2007-08-08 |
EP1798819B1 true EP1798819B1 (en) | 2012-07-11 |
Family
ID=37814421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06023809A Not-in-force EP1798819B1 (en) | 2005-12-15 | 2006-11-16 | Electrical terminal |
Country Status (6)
Country | Link |
---|---|
US (1) | US7354319B2 (en) |
EP (1) | EP1798819B1 (en) |
JP (1) | JP2007165323A (en) |
CN (1) | CN101005163B (en) |
DE (1) | DE102005060410A1 (en) |
ES (1) | ES2390229T3 (en) |
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EP3734767A1 (en) | 2019-04-30 | 2020-11-04 | Phoenix Contact GmbH & Co. KG | Terminal assembly and terminal clamp |
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2005
- 2005-12-15 DE DE102005060410A patent/DE102005060410A1/en not_active Withdrawn
-
2006
- 2006-11-16 EP EP06023809A patent/EP1798819B1/en not_active Not-in-force
- 2006-11-16 ES ES06023809T patent/ES2390229T3/en active Active
- 2006-12-15 JP JP2006338348A patent/JP2007165323A/en active Pending
- 2006-12-15 US US11/611,650 patent/US7354319B2/en not_active Expired - Fee Related
- 2006-12-15 CN CN2006101732943A patent/CN101005163B/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3734767A1 (en) | 2019-04-30 | 2020-11-04 | Phoenix Contact GmbH & Co. KG | Terminal assembly and terminal clamp |
DE102019111159A1 (en) * | 2019-04-30 | 2020-11-05 | Phoenix Contact Gmbh & Co. Kg | Connection arrangement and connection terminal |
DE102019111159B4 (en) | 2019-04-30 | 2023-06-07 | Phoenix Contact Gmbh & Co. Kg | Connection arrangement and connection terminal |
Also Published As
Publication number | Publication date |
---|---|
ES2390229T3 (en) | 2012-11-07 |
CN101005163B (en) | 2011-03-09 |
DE102005060410A1 (en) | 2007-06-21 |
EP1798819A2 (en) | 2007-06-20 |
US7354319B2 (en) | 2008-04-08 |
US20070141910A1 (en) | 2007-06-21 |
CN101005163A (en) | 2007-07-25 |
JP2007165323A (en) | 2007-06-28 |
EP1798819A3 (en) | 2007-08-08 |
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