EP0024328B1 - Terminal clamp for electrical apparatuses - Google Patents

Terminal clamp for electrical apparatuses Download PDF

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Publication number
EP0024328B1
EP0024328B1 EP80104597A EP80104597A EP0024328B1 EP 0024328 B1 EP0024328 B1 EP 0024328B1 EP 80104597 A EP80104597 A EP 80104597A EP 80104597 A EP80104597 A EP 80104597A EP 0024328 B1 EP0024328 B1 EP 0024328B1
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EP
European Patent Office
Prior art keywords
clamping
clamp
clamping screw
screw
head
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.)
Expired
Application number
EP80104597A
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German (de)
French (fr)
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EP0024328A1 (en
Inventor
Anton Galli
Ferdinand Rollinger
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
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT80104597T priority Critical patent/ATE5676T1/en
Publication of EP0024328A1 publication Critical patent/EP0024328A1/en
Application granted granted Critical
Publication of EP0024328B1 publication Critical patent/EP0024328B1/en
Expired legal-status Critical Current

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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
    • H01R4/38—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 a terminal for electrical devices with a particularly low design, the clamping screw is held in a clamping base and which has a clamp to hold against the bearing surface on the clamping base, which together form at least one terminal space for conductors to be connected, the clamp around the The clamping screw is held so that it can be tilted so that a clamp arm can be supported on the clamping base on the side of the clamping screw opposite the clamping position.
  • the terminal locations are essentially formed by two flat surfaces which are inclined toward one another in a roof shape.
  • the conductors to be connected can slide inwards, even against the clamping screw. Since the distance to the clamping screw is not guaranteed, the clamping forces can be distributed so unevenly that electrical safety is not guaranteed.
  • This clamp is still surmounted by the head of the clamping screw above its roof-shaped clamping piece, so that it also takes up a relatively large amount of space.
  • the invention has for its object to develop a terminal that is particularly low, the individual conductors as well as conductors with different diameters can be safely connected and which is easy to use.
  • the solution to the problem described is that the clamping location is designed so far away from the clamping screw that a distance of about half the diameter of this conductor remains for the largest connectable conductor, and that the clamping screw is designed to be retractable with its head in the clamp is. It is therefore essential that the clamping location is so far away from the clamping screw that there is a safe distance for the largest connectable conductor in order to distribute the clamping forces favorably.
  • the clamp around the clamping screw is held so that it can be tilted so far that a clamp arm can be supported on the clamping base on the side of the clamping screw opposite the clamping position.
  • the low structure is promoted by a clamping screw, which is designed to be retractable with its head in the clamp.
  • the head of the clamping screw engages almost unchanged at the point of application even when the clamp is inclined with respect to the clamping base.
  • the screw head engages approximately in the middle in all operating positions. The clamping forces are therefore well preserved even with conductors to be connected with different diameters, or are well distributed with two conductors to be connected.
  • knob structures are formed on the underside of the clamping plate in order to also with a round clamping plate to provide straight ladder hold during assembly. Certain terminal locations are not provided, so that certain distances are understandably missing.
  • the terminal is particularly secured against loosening under various operating conditions if the clamp is designed as an elastic molded part. It is advantageous that two clamping locations are formed by cranking two opposite edges of the clamp and that between these clamping locations a passage for the clamping screw is formed in a trough, the inclination of which in the imaginary axis cross in the direction of the cranked edges approximately the inclination of the countersunk head Head of the clamping screw corresponds and that the inclination in the direction perpendicular to the cranked edges is flatter than the inclination of the countersunk head.
  • Such a clamp especially if it is designed as a molded part, has elastic clamp arms, the clamp being stiffened at the terminal location for the conductors to be connected and providing lateral support for the conductors.
  • connection terminal is particularly elastic and at the same time stable with regard to the conductor to be connected if the terminal locations are formed by convex guide troughs formed in the clamp between their upper trough edge and the bent edge, the apex of which is closer to the edge than the imaginary one Axis cross of the passage for the clamping screw.
  • clamping screw 1 has a clamping screw 1 which is held in a threaded bore in the clamping base 2.
  • a clamp 3 is used to hold against the bearing surface of the clamping base 2.
  • two clamping locations lie between the clamp 3 and the clamping base 2.
  • a conductor 4 which for example has a cross section of 16 mm 2 , is held in the left terminal position. This clamping location is so far away from the clamping screw 1 that a distance 5 of approximately half the diameter of this conductor remains for the largest connectable conductor 4.
  • the clamp 3 is held so that it can tilt about the clamping screw 1 so that a clamp arm can be supported on the clamping base 1 on the clamping base 2 on the opposite side of the clamping screw 1, for example for the conductor 4.
  • the clamping screw 1 is designed with its head in the clamp 3, for example as shown in the illustration, retractable.
  • two clamping locations are formed by cranking two opposite edges 8 of the clamp 3. Between these clamping locations, a passage 9 for the clamping screw 1 is formed in a trough 10, the inclination of which in the imaginary axis cross 11, according to FIG. The inclination in the direction 14 perpendicular to the cranked edges 8 is flatter than the inclination of the countersunk head 13. Compare FIG. 3.
  • the clamp according to FIG. 2 for the terminal blocks of the connection terminal is essentially rectangular in its layout, with its long side running between the cranked sides 8. It has guide lugs 15 for installation in an installation device. The introduction of conductors to be connected can be facilitated by bevels 16 on the end face.
  • FIG. 3 The front view of the clamp according to FIG. 2 is shown in FIG. 3.
  • the clamping locations are formed by convex guide grooves 18 formed in the clamp between their upper trough edge 17 and the cranked edge 8, the apex 19 of which lies closer to the edge 8 than to the imaginary axis cross 11, according to FIG. 2, of the passage 9 for the clamping screw.
  • FIG. 4 illustrates how a conductor 4 with the largest diameter and a conductor 6 with a medium to small diameter can be clamped.
  • 5 shows how a conductor 4 with the largest diameter - for example a cross section of 16 mm 2 - and a conductor 7 with a small diameter - for example a cross section of 4 mm 2 - can be clamped.
  • the clamp 3 rests on the countersunk head 13 of the clamping screw 1 both in the operating mode according to FIG. 1 and in that according to FIGS. 4 or 5 in the region of the center line 20, the imaginary axis of the clamping screw 1.
  • the connecting terminal in the embodiment according to FIG. 6 has a clamping base with flanks 21 pulled down to the side. 6 shows some conductors of different diameters.
  • the use in a low and at the same time narrow installation device 30 is further illustrated in FIG. 7. Here, the installation device 30 is shown broken off.

Abstract

1. A connecting terminal for electrical devices of a particularly low design, the clamping screw (1) of which is held in a clamping base (2) and which has a clamp (3) for holding elements to be connected against the contact surface on the clamping base, these components together forming at least one clamping point for conductors (4) to be connected, the clamp (3) being tiltably held around the clamping screw (1) to such an extent that one arm of the clamp can be supported against the clamping base (2) on the side of the clamping screw (1) opposite to the clamping point, characterised in that the clamping point is spaced from the clamping screw (1) to an extent such that, for the largest conductor (4) which can be connected, a gap (5) of approximately half the diameter of this conductor remains ; and that the clamping screw (1) is so designed that its head (13) can be countersunk into the clamp (3).

Description

Die Erfindung bezieht sich auf eine Anschlußklemme für elektrische Geräte mit besonders niedriger Bauform, deren Klemmschraube in einem Klemmsockel gehalten ist und die eine Schelle zum Gegenhalten gegen die Auflagefläche am Klemmsockel aufweist, die zusammen zumindest einen Klemmplatz für anzuschließende Leiter bilden, wobei die Schelle um die Klemmschraube so weit kippbeweglich gehalten ist, daß sich ein Schellenarm auf der zum Klemmplatz gegenüberliegenden Seite der Klemmschraube auf dem Klemmsockel abstützen kann.The invention relates to a terminal for electrical devices with a particularly low design, the clamping screw is held in a clamping base and which has a clamp to hold against the bearing surface on the clamping base, which together form at least one terminal space for conductors to be connected, the clamp around the The clamping screw is held so that it can be tilted so that a clamp arm can be supported on the clamping base on the side of the clamping screw opposite the clamping position.

Bei einer bekannten derartigen Anschlußklemme (CH-A-581 913) sind die Klemmplätze im wesentlichen durch zwei ebene, gegeneinander dachförmig geneigte Flächen gebildet. Anzuschließende Leiter können dabei nach innen rutschen, sogar an der Klemmschraube anliegen. Da der Abstand zur Klemmschraube nicht gewährleistet ist, können die Klemmkräfte so ungleich verteilt werden, daß die elektrische Sicherheit nicht gewährleistet ist. Diese Klemme wird oberhalb ihres dachförmigen Klemmstükkes noch durch den Kopf der K!emmschraube überragt, so daß sie auch in der Höhe verhältnismäßig viel Raum beansprucht.In a known terminal of this type (CH-A-581 913), the terminal locations are essentially formed by two flat surfaces which are inclined toward one another in a roof shape. The conductors to be connected can slide inwards, even against the clamping screw. Since the distance to the clamping screw is not guaranteed, the clamping forces can be distributed so unevenly that electrical safety is not guaranteed. This clamp is still surmounted by the head of the clamping screw above its roof-shaped clamping piece, so that it also takes up a relatively large amount of space.

Elektrische Installationsgeräte wie Fehlerstromschutzschalter, Leitungsschutzschalter und Sicherungstrennschalter werden immer häufiger sehr niedrig ausgebildet, um auch in Verteilungsgehäusen in dünnen Wänden untergebracht werden zu können. Die Anschlußklemmen für die anzuschließenden Leiter beanspruchen dann bei üblicher Ausführung viel Bauhöhe. Besonders problematisch ist das Anschließen von zwei Leitern, deren Durchmesser stark differieren.Electrical installation devices such as residual current circuit breakers, miniature circuit breakers and fuse disconnectors are increasingly being designed to be very low so that they can also be housed in distribution boxes in thin walls. The terminals for the conductors to be connected then require a lot of height in the usual design. Connecting two conductors whose diameters differ greatly is particularly problematic.

Der Aufbau von sogenannten Flachklemmen ist beispielsweise nach DIN 4100, Februar 1975, dargestellt. Dabei können zwei Leiter mit unterschiedlichen Durchmessern nur dann angeschlossen werden, wenn die Durchmesser in einem der festgelegten Bereiche liegen, deren Spielraum häufig unbefriedigend eng ist. Die Klemmschraube überragt dabei die anzuschließenden Leiter, so daß die Klemme noch viel Bauhöhe beansprucht.The structure of so-called flat clamps is shown, for example, according to DIN 4100, February 1975. Two conductors with different diameters can only be connected if the diameters are in one of the specified ranges, the scope of which is often unsatisfactorily narrow. The clamping screw protrudes above the conductor to be connected, so that the clamp still requires a lot of height.

Der Erfindung liegt die Aufgabe zugrunde, eine Anschlußklemme zu entwickeln, die besonders niedrig ist, die Einzelleiter wie auch Leiter mit unterschiedlichen Durchmessern sicher anzuschließen gestattet und die sich leicht bedienen läßt.The invention has for its object to develop a terminal that is particularly low, the individual conductors as well as conductors with different diameters can be safely connected and which is easy to use.

Die Lösung der geschilderten Aufgabe besteht darin, daß der Klemmplatz von der Klemmschraube so weit entfernt ausgebildet ist, daß für den größten anschließbaren Leiter noch ein Abstand von etwa dem halben Durchmesser dieses Leiters verbleibt, und daß die Klemmschraube mit ihrem Kopf in der Schelle versenkbar ausgebildet ist. Wesentlich ist also, daß der Klemmplatz jeweils von der Klemmschraube so weit entfernt ausgebildet ist, daß für den größten anschließbaren Leiter ein sicherer Abstand verbleibt, um die Klemmkräfte günstig zu verteilen. Dabei ist die Schelle um die Klemmschraube so weit kippbeweglich gehalten, daß sich ein Schellenarm auf der zum Klemmplatz gegenüberliegenden Seite der Klemmschraube auf dem Klemmsockel abstützen kann. Der niedrige Aufbau wird dabei durch eine Klemmschraube gefördert, die mit ihrem Kopf in der Schelle versenkbar ausgebildet ist.The solution to the problem described is that the clamping location is designed so far away from the clamping screw that a distance of about half the diameter of this conductor remains for the largest connectable conductor, and that the clamping screw is designed to be retractable with its head in the clamp is. It is therefore essential that the clamping location is so far away from the clamping screw that there is a safe distance for the largest connectable conductor in order to distribute the clamping forces favorably. The clamp around the clamping screw is held so that it can be tilted so far that a clamp arm can be supported on the clamping base on the side of the clamping screw opposite the clamping position. The low structure is promoted by a clamping screw, which is designed to be retractable with its head in the clamp.

Durch die erfindungsgemäße Anschlußklemme greift der Kopf der Klemmschraube auch bei hinsichtlich des Klemmsockels schräg gestellter Schelle nahezu unverändert am Angriffspunkt an. Bei einer Schelle mit gleich langen Schellarmen greift der Schraubenkopf in allen Betriebslagen etwa in der Mitte an. Auch bei anzuschließenden Leitern mit unterschiedlichem Durchmesser bleiben die Klemmkräfte daher gut erhalten bzw. bei zwei anzuschließenden Leitern gut verteilt.By means of the connecting clamp according to the invention, the head of the clamping screw engages almost unchanged at the point of application even when the clamp is inclined with respect to the clamping base. In the case of a clamp with clamp arms of the same length, the screw head engages approximately in the middle in all operating positions. The clamping forces are therefore well preserved even with conductors to be connected with different diameters, or are well distributed with two conductors to be connected.

Bei einer bekannten Anschlußklemme mit runder Klemmplatte (US-A-3 993 397; insbesondere Fig. 3), die am Umfang gezahnt und mit diesen Zähnen in rippenförmige Gegenhaltungen eingreift, sind an der Unterseite der Klemmplatte Noppenstrukturen ausgebildet, um auch bei runder Klemmplatte für gerade Leiter Halt während der Montage zu bieten. Bestimmte Klemmplätze sind dabei nicht vorgesehen, so daß auch bestimmte Abstände verständlicherweise fehlen.In a known connecting terminal with a round clamping plate (US-A-3 993 397; in particular Fig. 3), which is serrated on the circumference and engages with these teeth in rib-shaped counter-positions, knob structures are formed on the underside of the clamping plate in order to also with a round clamping plate to provide straight ladder hold during assembly. Certain terminal locations are not provided, so that certain distances are understandably missing.

Die Anschlußklemme wird gegen Lockern unter verschiedenartigen Betriebsbedingungen besonders gesichert, wenn die Schelle als elastisches Formteil ausgebildet wird. Es ist dabei günstig, daß zwei Klemmplätze durch Kröpfen zweier gegenüberliegender Ränder der Schelle ausgebildet sind und daß zwischen diesen Klemmplätzen ein Durchgriff für die Klemmschraube in einer Mulde ausgebildet ist, deren Neigung im gedachten Achsenkreuz in Richtung der gekröpften Ränder etwa der Neigung des als Senkkopf ausgebildeten Kopfes der Klemmschraube entspricht und daß die Neigung in Richtung senkrecht zu den gekröpften Rändern flacher als die Neigung des Senkkopfes ausgebildet ist. Eine solche Schelle weist, besonders wenn sie als Formteil ausgebildet ist, elastische Schellenarme auf, wobei die Schelle jeweils am Klemmplatz für die anzuschließenden Leiter versteift ist und den Leitern seitlich Halt gibt.The terminal is particularly secured against loosening under various operating conditions if the clamp is designed as an elastic molded part. It is advantageous that two clamping locations are formed by cranking two opposite edges of the clamp and that between these clamping locations a passage for the clamping screw is formed in a trough, the inclination of which in the imaginary axis cross in the direction of the cranked edges approximately the inclination of the countersunk head Head of the clamping screw corresponds and that the inclination in the direction perpendicular to the cranked edges is flatter than the inclination of the countersunk head. Such a clamp, especially if it is designed as a molded part, has elastic clamp arms, the clamp being stiffened at the terminal location for the conductors to be connected and providing lateral support for the conductors.

Besonders elastisch und zugleich stabil hinsichtlich anzuschließender Leiter ist die Anschlußklemme, wenn die Klemmplätze durch in der Schelle zwischen ihrem oberen Muldenrand und dem abgekröpften Rand ausgebildete konvexe Führungsrinnen gebildet sind, deren Scheitel näher am Rand als am gedachten Achsenkreuz des Durchgriffes für die Klemmschraube liegt.The connection terminal is particularly elastic and at the same time stable with regard to the conductor to be connected if the terminal locations are formed by convex guide troughs formed in the clamp between their upper trough edge and the bent edge, the apex of which is closer to the edge than the imaginary one Axis cross of the passage for the clamping screw.

Man spart Material und erzielt Führung in einem Installationsgerät, wenn die Schelle in ihrem Grundriß im wesentlichen rechteckig ist, wobei ihre Längsseite zwischen den abgekröpften Seiten verläuft und wenn sie Führungsnasen bildet.Material is saved and guidance is achieved in an installation device if the clamp is essentially rectangular in its layout, its long side runs between the cranked sides and if it forms guide lugs.

Die Erfindung soll anhand von in der Zeichnung grob schematisch wiedergegebenen Ausführungsbeispielen näher erläutert werden:

  • In Fig. 1 ist eine Anschlußklemme mit einem angeschlossenen Leiter im Längsschnitt veranschaulicht. Der Klemmsockel ist an seinen Seiten abgebrochen dargestellt.
  • In Fig. 2 ist die Aufsicht auf ein Ausführungsbeispiel der Schelle für die Anschlußklemme nach Fig. 1 wiedergegeben.
  • In Fig. ist die Vorderansicht einer Schelle nach Fig. 2 dargestellt.
  • In Fig. 4 ist die Anschlußklemme nach Fig. 1 mit zwei angeschlossenen Leitern wiedergegeben, von denen der linke einen großen Durchmesser und der rechte einen mittleren bis kleinen Durchmesser aufweist.
  • In Fig. 5 ist die Anschlußklemme nach Fig. 1 wieder mit zwei angeschlossenen Leitern dargestellt, von denen der linke einen großen Durchmesser und der rechte einen kleinen Durchmesser aufweist.
  • In Fig. 6 ist eine Anschlußklemme nach Fig. 1, jedoch als Ausführungsbeispiel für einen Klemmsockel zum Einbau in Installationsgeräte dargestellt, wobei der Einsatz in einem Installationsgerät veranschaulicht ist.
  • In Fig. 7 ist die Aufsicht auf die Anschlußklemme nach Fig. 6, jedoch in ungeschnittenem Zustand, dargestellt.
The invention will be explained in greater detail on the basis of exemplary embodiments shown roughly schematically in the drawing:
  • In Fig. 1, a terminal with a connected conductor is illustrated in longitudinal section. The terminal base is shown broken off on its sides.
  • In Fig. 2, the supervision of an embodiment of the clamp for the terminal according to Fig. 1 is shown.
  • The front view of a clamp according to FIG. 2 is shown in FIG.
  • In Fig. 4, the terminal of Fig. 1 is shown with two connected conductors, of which the left has a large diameter and the right has a medium to small diameter.
  • In Fig. 5, the terminal of Fig. 1 is shown again with two connected conductors, of which the left has a large diameter and the right has a small diameter.
  • FIG. 6 shows a connecting terminal according to FIG. 1, but as an exemplary embodiment for a terminal base for installation in installation devices, the use in an installation device being illustrated.
  • 7 shows the top view of the connection terminal according to FIG. 6, but in an uncut state.

Die Anschlußklemme nach Fig. 1 weist eine Klemmschraube 1 auf, die in einer Gewindebohrung im Klemmsockel 2 gehalten ist. Eine Schelle 3 dient zum Gegenhalten gegen die Auflagefläche des Klemmsockels 2. Zwischen Schelle 3 und Klemmsockel 2 liegen im Ausführungsbeispiel zwei Klemmplätze. Im linken Klemmplatz ist ein Leiter 4 gehalten, der beispielsweise einen Querschnitt von 16 mm2 aufweist. Dieser Klemmplatz ist von der Klemmschraube 1 so weit entfernt ausgebildet, daß für den größten anschließbaren Leiter 4 noch ein Abstand 5 von etwa dem halben Durchmesser dieses Leiters verbleibt. Die Schelle 3 ist um die Klemmschraube 1 so weit kippbeweglich gehalten, daß sich ein Schellenarm auf der zum Klemmplatz, beispielsweise für den Leiter 4, gegenüberliegenden Seite der Klemmschraube 1 auf dem Klemmsockel 2 abstützen kann. Die Klemmschraube 1 ist mit ihrem Kopf in der Schelle 3, beispielsweise wie aus der Darstellung ersichtlich, versenkbar ausgebildet.1 has a clamping screw 1 which is held in a threaded bore in the clamping base 2. A clamp 3 is used to hold against the bearing surface of the clamping base 2. In the exemplary embodiment, two clamping locations lie between the clamp 3 and the clamping base 2. A conductor 4, which for example has a cross section of 16 mm 2 , is held in the left terminal position. This clamping location is so far away from the clamping screw 1 that a distance 5 of approximately half the diameter of this conductor remains for the largest connectable conductor 4. The clamp 3 is held so that it can tilt about the clamping screw 1 so that a clamp arm can be supported on the clamping base 1 on the clamping base 2 on the opposite side of the clamping screw 1, for example for the conductor 4. The clamping screw 1 is designed with its head in the clamp 3, for example as shown in the illustration, retractable.

Im Ausführungsbeispiel nach Fig. 1 sind zwei Klemmplätze durch Kröpfen zweier gegenüberliegender Ränder 8 der Schelle 3 ausgebildet. Zwischen diesen Klemmplätzen ist ein Durchgriff 9 für die Klemmschraube 1 in einer Mulde 10 ausgebildet, deren Neigung im gedachten Achsenkreuz 11, nach Fig. 2, in Richtung 12 der gekröpften Ränder etwa der Neigung des als Senkkopf 13 ausgebildeten Kopfes der Klemmschraube entspricht. Die Neigung in Richtung 14 senkrecht zu den gekröpften Rändern 8 ist flacher als die Neigung des Senkkopfes 13 ausgebildet. Man vergleiche Fig. 3.In the exemplary embodiment according to FIG. 1, two clamping locations are formed by cranking two opposite edges 8 of the clamp 3. Between these clamping locations, a passage 9 for the clamping screw 1 is formed in a trough 10, the inclination of which in the imaginary axis cross 11, according to FIG. The inclination in the direction 14 perpendicular to the cranked edges 8 is flatter than the inclination of the countersunk head 13. Compare FIG. 3.

Die Schelle nach Fig. 2 für die Klemmplätze der Anschlußklemme ist in ihrem Grundriß im wesentlichen rechteckig, wobei ihre Längsseite zwischen den abgekröpften Seiten 8 verläuft. Sie hat Führungsnasen 15 zum Einbau in ein Installationsgerät. An der Stirnseite kann das Einführen anzuschließender Leiter durch Anlaufschrägen 16 erleichtert werden.The clamp according to FIG. 2 for the terminal blocks of the connection terminal is essentially rectangular in its layout, with its long side running between the cranked sides 8. It has guide lugs 15 for installation in an installation device. The introduction of conductors to be connected can be facilitated by bevels 16 on the end face.

Die Vorderansicht der Schelle nach Fig. 2 ist in Fig. 3 wiedergegeben. Die Klemmplätze sind durch in der Schelle zwischen ihrem oberen Muldenrand 17 und dem abgekröpften Rand 8 ausgebildete konvexe Führungsrinnen 18 gebildet, deren Scheitel 19 näher am Rand 8 als am gedachten Achsenkreuz 11, nach Fig. 2, des Durchgriffs 9 für die Klemmschraube liegt.The front view of the clamp according to FIG. 2 is shown in FIG. 3. The clamping locations are formed by convex guide grooves 18 formed in the clamp between their upper trough edge 17 and the cranked edge 8, the apex 19 of which lies closer to the edge 8 than to the imaginary axis cross 11, according to FIG. 2, of the passage 9 for the clamping screw.

In Fig. 4 ist veranschaulicht, wie ein Leiter 4 mit größtem Durchmesser und ein Leiter 6 mit mittlerem bis kleinem Durchmesser festgeklemmt werden können. Die Darstellung nach Fig. 5 zeigt, wie ein Leiter 4 mit größtem Durchmesser - beispielsweise ein Querschnitt von 16 mm2 - und ein Leiter 7 mit kleinem Durchmesser - beispielsweise ein Querschnitt von 4 mm2 - festgeklemmt werden können. Wesentlich ist, daß die Schelle 3 am Senkkopf 13 der Klemmschraube 1 sowohl in der Betriebsweise nach Fig. 1 als auch in der nach den Fig. 4 oder 5 jeweils im Bereich der Mittellinie 20, der gedachten Achse der Klemmschraube 1, anliegt. Um die Schelle 3 bis zum Anschlag des Muldenrandes am Senkkopf 13 frei kippen zu lassen, ist verständlicherweise zwischen Klemmschraube 1 und Durchgriff 9 für die Klemmschraube 1 ausreichend Spiel zu belassen.FIG. 4 illustrates how a conductor 4 with the largest diameter and a conductor 6 with a medium to small diameter can be clamped. 5 shows how a conductor 4 with the largest diameter - for example a cross section of 16 mm 2 - and a conductor 7 with a small diameter - for example a cross section of 4 mm 2 - can be clamped. It is essential that the clamp 3 rests on the countersunk head 13 of the clamping screw 1 both in the operating mode according to FIG. 1 and in that according to FIGS. 4 or 5 in the region of the center line 20, the imaginary axis of the clamping screw 1. In order to allow the clamp 3 to tilt freely up to the stop of the trough edge on the countersunk head 13, it is understandable that there is sufficient play between the clamping screw 1 and the penetration 9 for the clamping screw 1.

Die Anschlußklemme im Ausführungsbeispiel nach Fig. 6 weist einen Klemmsockel mit seitlich heruntergezogenen Flanken 21 auf. In der Darstellung nach Fig. 6 sind einige Leiter verschiedener Durchmesser veranschaulicht. Den Einsatz in einem niedrigen und zugleich schmalen Installationsgerät 30 wird in Fig. 7 weiter veranschaulicht. Hierbei ist das Installationsgerät 30 abgebrochen dargestellt.The connecting terminal in the embodiment according to FIG. 6 has a clamping base with flanks 21 pulled down to the side. 6 shows some conductors of different diameters. The use in a low and at the same time narrow installation device 30 is further illustrated in FIG. 7. Here, the installation device 30 is shown broken off.

Claims (4)

1. A connecting terminal for electrical devices of a particularly low design, the clamping screw (1) of which is held in a clamping base (2) and which has a c!amp (3) for holding elements to be connected against the contact surface on the clamping base, these components together forming at least one clamping point for conductors (4) to be connected, the clamp (3) being tiltably held around the clamping screw (1) to such an extent that one arm of the clamp can be supported against the clamping base (2) on the side of the clamping screw (1) opposite to the clamping point, characterised in that the clamping point is spaced from the clamping screw (1) to an extent such that, for the largest conductor (4) which can be connected, a gap (5) of approximately half the diameter of this conductor remains; and that the clamping screw (1) is so designed that its head (13) can be countersunk into the clamp (3).
2. A connecting terminal according to Claim 1, characterised in that two clamping points are formed by bending two oppositely located edges (8) of the clamp (3), and that between these clamping points is arranged a passage (9) for the clamping screw (1) in a trough (10), the slope of which approximately at the notional axis intersection (11) corresponds to the slope of the head of the clamping screw (1), which is designed as a countersink head (13), in the direction (12) of the bent edges, and that its slope is flatter than the slope of the countersink head (13) in the direction (14) perpendicular to the bent edges (8).
3. A connecting terminal according to Claim 1 or 2, characterised in that the clamping points are formed by convex guide grooves (18) which are formed in the clamp between its upper trough edges (17) and the bent edges (8), and the tops (19) are arranged so as to be closer to the bent edge (8) than to the imaginary axis intersection (11) of the passage (9) for the clamping screw (fig. 2 and 3).
4. A connecting terminal according to Claim 2 or Claim 3, characterised in that the clamp for the clamping points is essentially rectangular in outline, the long side running between the bent sides (8); and that the clamp (3) forms guide projections (15).
EP80104597A 1979-08-16 1980-08-04 Terminal clamp for electrical apparatuses Expired EP0024328B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80104597T ATE5676T1 (en) 1979-08-16 1980-08-04 CONNECTION TERMINAL FOR ELECTRICAL DEVICES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792933214 DE2933214A1 (en) 1979-08-16 1979-08-16 CONNECTING TERMINAL FOR ELECTRICAL DEVICES
DE2933214 1979-08-16

Publications (2)

Publication Number Publication Date
EP0024328A1 EP0024328A1 (en) 1981-03-04
EP0024328B1 true EP0024328B1 (en) 1983-12-21

Family

ID=6078602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104597A Expired EP0024328B1 (en) 1979-08-16 1980-08-04 Terminal clamp for electrical apparatuses

Country Status (8)

Country Link
EP (1) EP0024328B1 (en)
JP (1) JPS5630274A (en)
AT (1) ATE5676T1 (en)
DE (1) DE2933214A1 (en)
DK (1) DK350480A (en)
ES (1) ES8105519A1 (en)
FI (1) FI802412A (en)
NO (1) NO802448L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19746240A1 (en) * 1997-10-20 1999-04-22 Abb Patent Gmbh Contact clamp for electrical fitting such as switch and press button
CN101577373B (en) * 2008-05-05 2013-11-06 罗格朗法国公司 Electrical terminal for connecting at least one electric conductor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103594825B (en) * 2013-11-06 2015-11-18 国网上海市电力公司 A kind of double C-type elastic wiring device
EP3648121B1 (en) * 2018-10-31 2021-10-06 ABB Power Grids Switzerland AG Condenser core, bushing, high voltage application and method of producing bushing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891296A (en) * 1973-10-09 1975-06-24 Elco Industries Inc Teeter terminal clamp
CH581913A5 (en) * 1975-04-24 1976-11-15 Reichle & De Massari Fa
US3993397A (en) * 1975-07-31 1976-11-23 Gutshall Charles E Tilting terminal clamp assembly
US4146289A (en) * 1978-01-03 1979-03-27 Textron Inc. Wire clamp assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19746240A1 (en) * 1997-10-20 1999-04-22 Abb Patent Gmbh Contact clamp for electrical fitting such as switch and press button
CN101577373B (en) * 2008-05-05 2013-11-06 罗格朗法国公司 Electrical terminal for connecting at least one electric conductor

Also Published As

Publication number Publication date
FI802412A (en) 1981-02-17
ATE5676T1 (en) 1984-01-15
NO802448L (en) 1981-02-17
ES494273A0 (en) 1981-05-16
DE2933214A1 (en) 1981-03-26
ES8105519A1 (en) 1981-05-16
JPS5630274A (en) 1981-03-26
EP0024328A1 (en) 1981-03-04
DK350480A (en) 1981-02-17

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