EP0464752A1 - Screwless terminal attachment for wire shaped conductors - Google Patents
Screwless terminal attachment for wire shaped conductors Download PDFInfo
- Publication number
- EP0464752A1 EP0464752A1 EP19910110888 EP91110888A EP0464752A1 EP 0464752 A1 EP0464752 A1 EP 0464752A1 EP 19910110888 EP19910110888 EP 19910110888 EP 91110888 A EP91110888 A EP 91110888A EP 0464752 A1 EP0464752 A1 EP 0464752A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact surface
- conductor
- tongue
- recess
- screwless
- 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
Links
- 239000004020 conductor Substances 0.000 title claims abstract description 47
- 210000002105 tongue Anatomy 0.000 claims abstract description 19
- 238000003780 insertion Methods 0.000 claims abstract description 11
- 230000037431 insertion Effects 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 description 2
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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
- H01R4/4819—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 the spring shape allowing insertion of the conductor end when the spring is unbiased
- H01R4/4821—Single-blade spring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
- H01R33/05—Two-pole devices
- H01R33/22—Two-pole devices for screw type base, e.g. for lamp
-
- 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
- H01R4/4846—Busbar details
- H01R4/485—Single busbar common to multiple springs
Definitions
- the innovation relates to a screwless clamp for wire-shaped conductors, in particular for electrical switching elements, such as switches, lamp holders or the like, with a clamp spring pressing the inserted conductor onto a contact surface, at the free end of which one or more resilient tongues are arranged, in the direction of insertion at the back, inclined to the contact surface, the front section is provided with an open edge recess for inserting a conductor.
- Screwless clamp fasteners of the type mentioned are increasingly being used instead of the conventional screw connections for electrical lines on switching elements.
- the conductor is pressed against an associated contact surface by a tongue-like clamping spring.
- the screwless clamp connection consists of the corresponding number of clamp springs arranged directly next to one another and only separated by narrow slots.
- the clamp spring has a V-shaped recess on the front edge of its free end.
- the centrally arranged recess does not take up the entire width of the clamping spring, so that between the lateral boundary edges of the clamping spring and the recess there remains a section perpendicular to the lateral boundary edges of the recess on both sides of the recess.
- the actual fastening zone which is intended to prevent the clamped conductor from breaking out laterally, is narrowly limited. An accurate insertion of the conductor in the correct position and thus a reliable attachment is not guaranteed.
- a screwless clamp fastening is known from DE-GM 19 81 350, in which the edge of the clamp spring directed against the contact surface is recessed in a V-shaped manner for stable holding of the conductor, which is also clamped in place.
- the recess extends over the full width of the edge abutting the contact surface; but it has the disadvantage that the apex height of the V-shaped recess depends both on the opening angle of its legs and on the width of the clamping spring and finally also on the inclination of the clamping spring relative to the contact surface.
- the recess designed for a conductor with a large diameter can only clamp a thin conductor unreliably.
- the recess depth is dimensioned for a thin conductor, the lateral hold for a thick conductor is not guaranteed.
- the same problem also occurs with conductors with a non-uniform diameter, e.g. with tinned strands.
- the innovation is based on the task of creating a screwless clamp for wire-shaped conductors according to the preamble of claim 1, which reliably prevents a conductor from breaking out laterally and also reliably clamps conductors of different diameters.
- the open-edge recess is designed as a trapezoid with a base lying on the front edge of the tongue and at least approximately taking up its full width.
- the legs of the trapezoid form an angle of 30 ° to 60 °, but preferably 45 °, with the lateral boundary edges of the tongue.
- the inclination of the front section of the tongue forms an angle of approximately 45 ° with respect to the contact surface.
- the height of the trapezoid forming the open-edge recess is selected so that its distance from the contact surface is smaller than the smallest diameter of the conductor to be clamped.
- An advantage of this design is that connecting conductors of different diameters, but above all thin conductors, can be securely clamped and contacted.
- a lamp holder designated by 10 has a one-piece housing which is equipped on the one hand with a threaded part 11 and on the other hand with a connecting part 12.
- the threaded part 11 serves in the usual way for receiving the threaded base of an incandescent lamp 13, while the connecting part 12, as described further below, receives clamp fasteners 20 for connecting the power supply lines for the incandescent lamp 13.
- two chambers 15, which are separated from one another by a dividing wall 14, are arranged in the connecting part 12 for receiving a screwless fastening 20 each.
- This is formed from a contact spring with a contact surface 21 and a clamping spring 22 connected to it.
- the clamping spring 22 is angled like a hook and has at its free end a tongue 23 which is inclined inward by approximately 45 ° with respect to the section of the contact surface 21 which cooperates with it (see in particular FIG. 3).
- the tongue 23 On its front edge directed against the contact surface 21, the tongue 23 has a recess 24 which is open at the edge.
- This is designed as a trapezoid with a base lying on the front edge of the tongue 23, which, as can be seen in particular from FIG. 4, occupies its full width.
- the contact surface 21 of the contact spring is connected to the clamping spring 22 via a connecting element 25 in the form of a crimp connection or the like, so that both parts are firmly associated with one another.
- an electrical conductor 30 serving as a power supply for the incandescent lamp 15 is in the form of an insulated wire with its stripped end through an opening 31 from the outside into the chamber 15 and there into the through the recess 24 at the front Edge of the clamping spring 22 formed insertion opening of the screwless clamp 20 inserted.
- the tongue 23 of the clamp spring 22 which is inclined rearward at its free end in the front section towards the contact surface, is deflected backwards against its spring restoring force.
- the electrical conductor 30 held between the contact surface 21 and the clamping spring is prevented from breaking out laterally into the slot between the two clamping springs or between the clamping spring and the wall of the chamber 15 by the legs of the trapezoid extending from the lateral boundary edges of the tongue 23.
- the upper boundary of the trapezoidal recess 24 parallel to the base at the front edge of the tongue 23 runs parallel to the contact surface 21 and thus forms a clamping edge which rests in the electrical conductor due to its spring action. If a tensile force is exerted on the conductor 30, the clamping effect is increased.
- the clamping springs 22 are separated from one another by a slot 26. In this case, a clamping spring 22 has two clamping attachments to which two conductors 30 can be connected if necessary.
- the height of the trapezoid forming the edge-open recess 24 to the contact surface 21 is selected so that the distance between them is smaller than the smallest diameter of the clamp conductor. In this way, conductors of different strengths can be securely held with the clamping device.
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
Abstract
Description
Die Neuerung betrifft eine schraubenlose Klemmbefestigung für drahtförmige Leiter, insbesondere für elektrische Schaltelemente, wie Schalter, Lampenfassungen oder dgl., mit einer die eingesteckten Leiter auf eine Kontaktfläche andrükkenden Klemmfeder, an deren freiem Ende eine oder mehrere federnden Zungen angeordnet sind, deren in Einsteckrichtung nach hinten geneigt zur Kontaktfläche stehender, vorderer Abschnitt mit je einer randoffenen Aussparung zum Einstecken eines Leiters versehen ist.The innovation relates to a screwless clamp for wire-shaped conductors, in particular for electrical switching elements, such as switches, lamp holders or the like, with a clamp spring pressing the inserted conductor onto a contact surface, at the free end of which one or more resilient tongues are arranged, in the direction of insertion at the back, inclined to the contact surface, the front section is provided with an open edge recess for inserting a conductor.
Schraubenlose Klemmbefestigungen der genannten Art finden zunehmend anstatt der herkömmlichen Schraubanschlüsse für elektrische Leitungen an Schaltelementen Anwendung. Der Leiter wird dabei durch eine zungenartige Klemmfeder gegen eine zugehörige Kontaktfläche gedrückt. Für mehrdrähtige, polaritätsgleiche Leiter besteht die schraubenlose Klemmverbindung aus der entsprechenden Anzahl von unmittelbar nebeneinander angeordneten, nur durch schmale Schlitze getrennte Klemmfedern.Screwless clamp fasteners of the type mentioned are increasingly being used instead of the conventional screw connections for electrical lines on switching elements. The conductor is pressed against an associated contact surface by a tongue-like clamping spring. For multi-wire, polarity-identical conductors, the screwless clamp connection consists of the corresponding number of clamp springs arranged directly next to one another and only separated by narrow slots.
Beim Einführen oder auch durch Krafteinwirkung auf den ordnungsgemäß in eine solche Klemmbefestigung eingeführten Leiter kann es vorkommen, daß dieser seitlich zur Wand eines die Klemmfeder aufnehmenden Gehäuses ausbricht. Die Klemmfeder wird dabei gegen die entgegengesetzte Wand des Gehäuses bzw. gegen oder unter die ihr benachbarte Klemmfeder geschoben. Es kann aber auch vorkommen, daß der Leiter in den gemeinsamen Trennschlitz zwischen der unmittelbar daneben angeordneten Klemmfeder ausweicht und sich dort verhakt. In dieser Falle wird die noch unbestückte, danebenliegende Klemmfeder blokkiert. Dieser unerwünschte Effekt tritt vor allem bei Installationsarbeiten an der elektrischen Verdrahtung und bei Montagevorgängen auf.When it is inserted or by force acting on the conductor properly inserted into such a clamp, it can break out laterally to the wall of a housing receiving the clamp spring. The clamping spring is pushed against the opposite wall of the housing or against or under the clamping spring adjacent to it. However, it can also happen that the conductor dodges into the common separating slot between the clamping spring arranged directly next to it and gets caught there. In this case, the still empty, adjacent clamping spring is blocked. This undesirable effect mainly occurs during installation work on the electrical wiring and during assembly processes.
Bei einer bekannten Klemmbefestigung gemäß dem DE-GM 19 75 764 weist die Klemmfeder an der Vorderkante ihres freien Endes eine V-förmige Ausnehmung auf. Die mittig angeordnete Aussparung nimmt hierbei nicht die ganze Breite der Klemmfeder ein, so daß zwischen den seitlichen Begrenzungskanten der Klemmfeder und der Aussparung ein zu deren seitlichen Begrenzungskanten rechtwinkliger Abschnitt beiderseits der Aussparung verbleibt. Dadurch ist die eigentliche Befestigungszone, die ein seitliches Ausbrechen des geklemmten Leiters verhindern soll, eng begrenzt. Ein treffsicheres Einstecken des Leiters in die richtige Position und somit eine zuverlässige Befestigung ist nicht gewährleistet.In a known clamp fastening according to DE-GM 19 75 764, the clamp spring has a V-shaped recess on the front edge of its free end. The centrally arranged recess does not take up the entire width of the clamping spring, so that between the lateral boundary edges of the clamping spring and the recess there remains a section perpendicular to the lateral boundary edges of the recess on both sides of the recess. As a result, the actual fastening zone, which is intended to prevent the clamped conductor from breaking out laterally, is narrowly limited. An accurate insertion of the conductor in the correct position and thus a reliable attachment is not guaranteed.
Weiterhin ist eine schraubenlose Klemmbefestigung aus dem DE-GM 19 81 350 bekannt, bei der die gegen die Kontaktfläche gerichtete Kante der Klemmfeder zur stabilen Halterung des ebenfalls eingeklemmten Leiters V-förmig ausgespart ist. Die Aussparung erstreckt sich bei dieser Lösung zwar über die volle Breite der an der Kontaktfläche anliegenden Kante; sie hat aber den Nachteil, daß die Scheitelhöhe der V-förmigen Aussparung sowohl vom Öffnungswinkel ihrer Schenkel als auch von der Breite der Klemmfeder und schließlich auch noch von der Neigung der Klemmfeder gegenüber der Kontaktfläche abhängt. Dies hat zur Folge, daß die für einen Leiter mit großem Durchmesser ausgelegte Aussparung einen dünnen Leiter nur unzuverlässig klemmen kann. Ist die Aussparungstiefe dagegen für einen dünnen Leiter bemessen, so ist der seitliche Halt für einen dicken Leiter nicht sicher gegeben. Dieselbe Problematik tritt auch auf bei Leitern mit ungleichförmigem Durchmesser, wie z.B. bei verzinnten Litzen. Ferner ist auch hier die Sicherheit für ein lagegenaues Einstecken des Leiters wegen der beiden zu den seitlichen Begrenzungskanten schräg auslaufenden, in einem stumpfen Winkel zueinander stehenden Schenkel der V-förmigen Ausnehmung nicht immer gegeben.Furthermore, a screwless clamp fastening is known from DE-GM 19 81 350, in which the edge of the clamp spring directed against the contact surface is recessed in a V-shaped manner for stable holding of the conductor, which is also clamped in place. In this solution, the recess extends over the full width of the edge abutting the contact surface; but it has the disadvantage that the apex height of the V-shaped recess depends both on the opening angle of its legs and on the width of the clamping spring and finally also on the inclination of the clamping spring relative to the contact surface. As a result, the recess designed for a conductor with a large diameter can only clamp a thin conductor unreliably. If, on the other hand, the recess depth is dimensioned for a thin conductor, the lateral hold for a thick conductor is not guaranteed. The same problem also occurs with conductors with a non-uniform diameter, e.g. with tinned strands. Furthermore, there is also not always security for an accurate insertion of the conductor because of the two legs of the V-shaped recess that run obliquely to the lateral boundary edges and are at an obtuse angle to one another.
Der Neuerung liegt nun die Aufgabe zugrunde, eine schraubenlose Klemmbefestigung für drahtförmige Leiter gemäß dem Oberbegriff des Anspruches 1 zu schaffen, die ein seitliches Ausbrechen eines Leiters sicher verhindert und auch Leiter mit unterschiedlichem Durchmesser zuverlässig klemmt.The innovation is based on the task of creating a screwless clamp for wire-shaped conductors according to the preamble of claim 1, which reliably prevents a conductor from breaking out laterally and also reliably clamps conductors of different diameters.
Diese Aufgabe wird gemäß der Neuerung dadurch gelöst, daß die randoffene Aussparung als Trapez mit am vorderen Rand der Zunge liegender und wenigstens annähernd deren volle Breite einnehmender Basis ausgebildet ist.This object is achieved according to the innovation in that the open-edge recess is designed as a trapezoid with a base lying on the front edge of the tongue and at least approximately taking up its full width.
Hierbei macht man sich die Erkenntnis Zunutze, daß bei einer randoffenen Aussparung in Form eines Trapezes, der zwischen den Trapezschenkeln und den seitlichen Begrenzungskanten der Zunge eingeschlossene Winkel die Tiefe der Aussparung nicht beeinflußt. Durch die Unabhängigkeit der Schenkelsteigung von der Tiefe der Aussparung ist die Klemmbefestigung weitgehend toleranzunempfindlich bezüglich unterschiedlicher Leiterdurchmesser und darüber hinaus gegen seitliches Ausbrechen des Leiters besonders sicher. Ferner wird durch die für den Leiter an der Zunge zur Verfügung stehende Einsteckbreite ein zielgenaues Einstecken des Leiters gegenüber den bisherigen Lösungen wesentlich erleichtert bzw. verbessert.Here one makes use of the knowledge that in the case of an open-edge recess in the form of a trapezoid, the angle enclosed between the trapezoidal legs and the lateral boundary edges of the tongue does not influence the depth of the recess. Due to the independence of the leg slope from the depth of the recess, the clamp fastening is largely insensitive to tolerances with regard to different conductor diameters and, in addition, is particularly secure against the conductor breaking away from the side. Furthermore, due to the insertion width available for the conductor on the tongue, a precise insertion of the conductor is considerably facilitated or improved compared to the previous solutions.
Nach einer bevorzugten Ausführungsform ist vorgesehen, daß die Schenkel des Trapezes mit den seitlichen Begrenzungskanten der Zunge einen Winkel von 30° bis 60°, vorzugsweise aber von 45° einschließen.According to a preferred embodiment, it is provided that the legs of the trapezoid form an angle of 30 ° to 60 °, but preferably 45 °, with the lateral boundary edges of the tongue.
Diese Lösung zeichnet sich dadurch aus, daß der Anschlußleiter auch bei auftretenden äußeren Krafteinflüssen sicher seitlich geführt und gehalten ist. Weiterhin ist die Gefahr des seitlichen Vorbeisteckens des Leiters an der Klemmzone wesentlich verringert.This solution is characterized in that the connecting conductor is securely guided and held laterally even when external forces occur. Furthermore, there is the danger of passing sideways teckens the conductor at the clamping zone significantly reduced.
Nach einer vorteilhaften Ausbildung des Gegenstandes der Neuerung ist vorgesehen, daß die Neigung des vorderen Abschnittes der Zunge gegenüber der Kontaktfläche einen Winkel von etwa 45° bildet.According to an advantageous embodiment of the subject of the innovation, it is provided that the inclination of the front section of the tongue forms an angle of approximately 45 ° with respect to the contact surface.
Dadurch wird einerseits das Einführen des Leiters zur Klemmstelle erleichtert, andererseits wird somit eine gute mechanische und elektrische Verbindung zur Kontaktfläche garantiert.This on the one hand facilitates the insertion of the conductor to the terminal point, and on the other hand guarantees a good mechanical and electrical connection to the contact surface.
Bei einer weiteren bevorzugten Auführungsform der Neuerung ist vorgesehen, daß die Höhe des die randoffene Aussparung bildenden Trapezes so gewählt ist, daß ihr Abstand gegenüber der Kontaktfläche kleiner als der kleinste Durchmesser des zu klemmenden Leiters ist.In a further preferred embodiment of the innovation, it is provided that the height of the trapezoid forming the open-edge recess is selected so that its distance from the contact surface is smaller than the smallest diameter of the conductor to be clamped.
Ein Vorteil dieser Ausführung ist, daß Anschlußleiter unterschiedlichen Durchmessers, aber vor allem auch dünne Leiter sicher geklemmt und kontaktiert werden können.An advantage of this design is that connecting conductors of different diameters, but above all thin conductors, can be securely clamped and contacted.
In der nachfolgenden Beschreibung ist die Klemmbefestigung nach der Neuerung anhand eines in der beigefügten Zeichnung vereinfacht dargestellten Ausführungsbeispieles erläutert. Es zeigen:
- Fig. 1 Eine Lampenfassung mit eingeschraubter Glühlampe und in der Lampenfassung angeordneten, schraubenlosen Klemmbefestigungen,
- Fig. 2 eine gegenüber der Fig. 1 um 90° gedrehte Schnittdarstellung der Lampenfassung, mit einer schraubenlosen Klemmbefestigung und einem darin eingeklemmten elektrischen Leiter,
- Fig. 3 einen im Maßstab nochmals vergrößerten Ausschnitt eines senkrechten Schnittes durch die Lampenfassung in Bereich der schraubenlosen Klemmbefestigung,
- Fig. 4 eine schraubenlose Klemmbefestigung mit zwei nebeneinander liegenden Klemmfedern und einem eingeklemmten Leiter, geschnitten nach der Linie IV-IV in Fig. 3.
- 1 A lamp holder with a screwed-in light bulb and screwless clamps arranged in the lamp holder,
- 2 is a sectional view of the lamp holder rotated by 90 ° with respect to FIG. 1, with a screwless clamp fastening and an electrical conductor clamped therein,
- 3 shows an enlarged section of a vertical section through the lamp socket in the area of the screwless clamp fastening,
- 4 shows a screwless clamp fastening with two clamp springs lying next to one another and a clamped conductor, cut along the line IV-IV in FIG. 3.
Eine mit 10 bezeichnete Lampenfassung weist ein einstückiges Gehäuse auf, welches einerseits mit einen Gewindeteil 11 und andererseits mit einen Anschlußteil 12 ausgestattet ist. Das Gewindeteil 11 dient in der üblichen Weise zur Aufnahme des Gewindesockels einer Glühlampe 13, während das Anschlußteil 12, wie weiter unter beschrieben, Klemmenbefestigungen 20 zum Anschluß der Stromzuführungen für die Glühlampe 13 aufnimmt.A lamp holder designated by 10 has a one-piece housing which is equipped on the one hand with a threaded
Wie insbesondere aus Fig. 2 hervorgeht, sind zu diesem Zweck im Anschlußteil 12 zwei durch eine Trennwand 14 voneinander abgeteilte Kammern 15 zur Aufnahme je einer schraubenlosen Klemmbefestigung 20 angeordnet. Diese wird aus einer Kontaktfeder mit einer Kontaktfläche 21 sowie einer mit dieser verbundenen Klemmfeder 22 gebildet. Die Klemmfeder 22 ist hakenartig abgewinkelt und weist an ihrem freien Ende eine gegenüber dem mit ihr zusammenwirkenden Abschnitt der Kontaktfläche 21 um ca. 45° einwärts geneigte Zunge 23 auf (siehe hierzu insbesondere Fig. 3). An ihrem gegen die Kontaktfläche 21 gerichteten vorderen Rand weist die Zunge 23 eine randoffene Aussparung 24 auf. Diese ist als Trapez mit einer am vorderen Rand der Zunge 23 liegender Basis ausgebildet, welche wie insbesondere aus Fig. 4 ersichtlich, deren volle Breite einnimmt. Die Kontaktfläche 21 der Kontaktfeder ist mit der Klemmfeder 22 über ein Verbindungselement 25 in Form einer Krimpverbindung oder dgl. verbunden, so daß beide Teile einander fest zugeordnet sind.As can be seen in particular from FIG. 2, two
Wie in Fig. 2 und 3 dargestellt, ist ein als Stromzuführung für die Glühlampe 15 dienender elektrischer Leiter 30 in Form eines isolierten Drahtes mit seinen abisolierten Ende durch eine Öffnung 31 von außen in die Kammer 15 und dort in die durch die Aussparung 24 am vorderen Rand der Klemmfeder 22 gebildete Einführungsöffnung der schraübenlosen Klemmbefestigung 20 eingesteckt.As shown in FIGS. 2 and 3, an
Beim Einführen des drahtförmigen elektrischen Leiters 30 entlang der Kontaktfläche 21 in die Einführungsöffnung der Klemmbefestigung 20 wird die an ihrem freien Ende im vorderen Abschnitt zur Kontaktfläche nach hinten geneigt stehende Zunge 23 der Klemmfeder 22 entgegen ihrer Federrückstellkraft nach hinten ausgelenkt. Der zwischen der Kontaktfläche 21 und der Klemmfeder gehaltene elektrische Leiter 30 ist durch die von den seitlichen Begrenzungskanten der Zunge 23 ausgehenden Schenkel des Trapezes an einem seitlichen Ausbrechen in den Schlitz zwischen beiden Klemmfedern bzw. zwischen der Klemmfeder und der Wand der Kammer 15 gehindert.When the wire-shaped
Wie insbesondere aus Fig 4 erkennbar, verläuft die zur Basis parallele obere Begrenzung der trapezförmigen Aussparung 24 am vorderen Rand der Zunge 23 parallel zur Kontaktfläche 21 und bildet so eine Klemmkante, die sich aufgrund ihrer Federwirkung in den elektrischen Leiter stemmt. Sofern auf den Leiter 30 eine Zugkraft ausgeübt wird, wird die Klemmwirkung noch verstärkt. Wie ebenfalls aus Fig. 4 erkennbar, sind die Klemmfedern 22 voneinander durch einen Schlitz 26 getrennt. In diesem Falle hat eine Klemmfeder 22 zwei Klemmbefestigungen, an denen im Bedarfsfalle zwei Leiter 30 angeschlossen werden können.As can be seen in particular from FIG. 4, the upper boundary of the
Die Höhe des die randoffene Aussparung 24 bildenden Trapezes zur Kontaktfläche 21 ist so gewählt, daß deren Abstand dieser gegenüber kleiner ist als der kleinste Durchmesser des zu klemmenden Leiters. Auf diese Weise können unterschiedlich starke Leiter mit der Klemmvorrichtung sicher gehalten werden.The height of the trapezoid forming the edge-
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9010214U | 1990-07-05 | ||
| DE9010214U DE9010214U1 (en) | 1990-07-05 | 1990-07-05 | Screwless clamp fastening for wire-shaped conductors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0464752A1 true EP0464752A1 (en) | 1992-01-08 |
| EP0464752B1 EP0464752B1 (en) | 1995-06-07 |
Family
ID=6855323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91110888A Expired - Lifetime EP0464752B1 (en) | 1990-07-05 | 1991-07-01 | Screwless terminal attachment for wire shaped conductors |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0464752B1 (en) |
| DE (2) | DE9010214U1 (en) |
| ES (1) | ES2075917T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6695638B1 (en) * | 2001-05-11 | 2004-02-24 | Daniel N. David | Electrical wire connector device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19614988A1 (en) * | 1996-04-16 | 1997-10-23 | Tridonic Bauelemente | Electrical connector and connector for use in an electrical connector |
| ES2157819B1 (en) * | 1999-08-13 | 2002-03-01 | Tecnica De Conexiones S A | CONNECTION TERMINAL FOR LUMINAIRES. |
| DE20300138U1 (en) * | 2003-01-08 | 2004-05-19 | Weidmüller Interface Gmbh & Co. | Connector for electrical cables, has cable end inserted between lever and spring clip |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1975764U (en) * | 1967-08-02 | 1967-12-28 | Casp Arn Winkhaus Fa | SCREWLESS DOUBLE PRESSURE TERMINAL. |
| DE1981350U (en) * | 1968-01-11 | 1968-03-21 | Bbc Brown Boveri & Cie | SCREWLESS CLAMP. |
| DE1800269A1 (en) * | 1968-10-01 | 1970-05-06 | Broekelmann Jaeger & Busse | Screwless, self-resilient connection terminal |
| GB2095925A (en) * | 1981-03-23 | 1982-10-06 | Stucchi Spa Aag | Terminal block with multiple spring contact |
| DE3303178A1 (en) * | 1983-01-31 | 1984-08-02 | Siemens AG, 1000 Berlin und 8000 München | Plug socket for electrical lead cores |
-
1990
- 1990-07-05 DE DE9010214U patent/DE9010214U1/en not_active Expired - Lifetime
-
1991
- 1991-07-01 EP EP91110888A patent/EP0464752B1/en not_active Expired - Lifetime
- 1991-07-01 ES ES91110888T patent/ES2075917T3/en not_active Expired - Lifetime
- 1991-07-01 DE DE59105645T patent/DE59105645D1/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1975764U (en) * | 1967-08-02 | 1967-12-28 | Casp Arn Winkhaus Fa | SCREWLESS DOUBLE PRESSURE TERMINAL. |
| DE1981350U (en) * | 1968-01-11 | 1968-03-21 | Bbc Brown Boveri & Cie | SCREWLESS CLAMP. |
| DE1800269A1 (en) * | 1968-10-01 | 1970-05-06 | Broekelmann Jaeger & Busse | Screwless, self-resilient connection terminal |
| GB2095925A (en) * | 1981-03-23 | 1982-10-06 | Stucchi Spa Aag | Terminal block with multiple spring contact |
| DE3303178A1 (en) * | 1983-01-31 | 1984-08-02 | Siemens AG, 1000 Berlin und 8000 München | Plug socket for electrical lead cores |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6695638B1 (en) * | 2001-05-11 | 2004-02-24 | Daniel N. David | Electrical wire connector device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE9010214U1 (en) | 1990-09-20 |
| DE59105645D1 (en) | 1995-07-13 |
| EP0464752B1 (en) | 1995-06-07 |
| ES2075917T3 (en) | 1995-10-16 |
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