EP0336251B1 - Clamping screw - Google Patents
Clamping screw Download PDFInfo
- Publication number
- EP0336251B1 EP0336251B1 EP89105376A EP89105376A EP0336251B1 EP 0336251 B1 EP0336251 B1 EP 0336251B1 EP 89105376 A EP89105376 A EP 89105376A EP 89105376 A EP89105376 A EP 89105376A EP 0336251 B1 EP0336251 B1 EP 0336251B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- frame
- screw
- terminal
- terminal frame
- 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.)
- Expired - Lifetime
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- 239000004020 conductor Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims 3
- 238000013459 approach Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 238000010616 electrical installation Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000007704 transition Effects 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
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/36—Conductive members located under tip of screw
- H01R4/363—Conductive members located under tip of screw with intermediate part between tip and conductive member
Definitions
- the invention relates to a screw terminal for an electrical installation device, in particular circuit breaker, for connecting one or / and several connecting wires or connecting rails, with a one-piece, rectangular terminal frame, the upper transverse side of which has a recess for receiving a clamping screw which is loop-shaped with a terminal frame penetrating box frame, which has a threaded hole in its upper, the upper transverse side of the terminal frame crossbar, the terminal frame is designed as an open ring and between its upper transverse side and the free end of a longitudinal leg forming a support leg, which is shorter than the opposite long side of the terminal frame, a defined gap "X" is provided.
- screw terminals are used both individually and in electrical installation devices for fixing or for the electrical connection of electrical conductors. Particularly when used in electrical installation devices, there is often a need for clamping devices which enable simple handling. It is often required that both individual connecting wires and connecting rails must be able to be connected equally without additional devices or precautions being required.
- Such a screw terminal designed as a box terminal for use in a housing for an electrical installation device has become known from DE-OS 31 37 117, in which a band-like conductor strip is bent into a square terminal frame which is penetrated by a loop-shaped box frame.
- a clamping screw works together with the terminal frame and the box frame and serves for the non-positive fixing of the connecting conductors, which can be provided both as a wire and as a flat conductor in the form of connecting rails.
- the connecting rails are clamped between the upper transverse side of the terminal frame and the screw head of the clamping screw, it is provided for fixing individual connecting wires that they are inserted into the loop formed by the box frame, which is then tightened by means of the clamping screw against the lower transverse side of the terminal frame. It is easily possible that due to the clamping force exerted by the clamping screw, the normally parallel longitudinal sides of the terminal frame will suffer permanent deformation by arching like a bow and thereby impairing the durability of the non-positive fastening, so that the screw connection can be loosened.
- a screw terminal has become known in which a box-shaped element is provided which is provided with a U-shaped clamping element which is articulated on a connecting element.
- the box-shaped element has a slot between the upper cross bar, which has a recess for the passage of a clamping screw, and the adjacent longitudinal bar, so that a better assembly of the box-shaped element and the U-shaped clamping element can be achieved.
- a box-shaped element is also provided instead of the U-shaped terminal element; the said slot then serves to insert the box-shaped clamp element into the box-shaped element.
- the side walls of the box frame which are offset at right angles with respect to the long sides of the terminal frame, are provided with elongated holes, into which guide tabs formed on the lower transverse side of the terminal frame engage and are guided by these guide tabs in such a way that the upper transverse side is aligned at the Tightening the clamping screw resiliently approximates to the free end of the support leg that the long side of the terminal frame forming the supporting leg has at most half the width of the longitudinal side of the terminal frame arranged opposite it, connected to the upper and lower transverse side, and provided with an inward bulge to save material is that resiliently rests against the upper crossbar of the box frame and secures it in at least two positions against displacement in the terminal frame.
- the cam-like bulge provided according to the invention serves to temporarily hold the box frame reaching through the terminal frame in its respective position by the support leg with the cam-like bulge resting against the upper transverse web of the box frame.
- the cam-like bulge acts as a resilient buffer against which the upper crosspiece of the box frame strikes and which can only be overcome with a defined amount of force.
- the great advantage of the screw terminal provided with this improvement is that, depending on whether connecting rails or connecting wires are to be fastened, the advantageous, ie assembly-friendly position of the box frame with respect to the terminal frame can be set beforehand without this setting being changed during the Assembly changes automatically. It is provided that, in the event that connecting rails are to be fastened, the upper transverse web of the box frame is immediately adjacent to the upper transverse side of the terminal frame and the bulge acting as retaining cams on the supporting web of the box frame bears against the latter.
- the box frame when individual connecting wires are to be fastened, the box frame is pressed down, so that its upper crossbar with the lower transverse side of the terminal frame is adjacent, wherein the cam-like bulge on the support web of the terminal frame acts on the upper crossbar of the box frame from above and prevents a change in position by moving upwards.
- the cam-like bulge which is preferably conical, is arranged near the free end of the long side of the clamp frame forming the support leg, the distance between the cam-like bulge and the upper transverse side of the clamp frame being approximately the thickness of the upper crossbar of the box frame corresponds to or is slightly larger than this, so that in its upper position it adjoins the upper transverse side of the terminal frame.
- a further advantageous embodiment of the invention consists in the length of the threaded shaft of the clamping screw, i.e. H. the distance between the screw head and screw end to the length of the box frame or the same length of the terminal frame. This ensures that when screwed in, when the screw head of the clamping screw rests on the upper transverse side of the terminal frame and the threaded shaft is screwed into the threaded hole in the upper transverse web of the box frame so that it rests on the upper transverse side of the terminal frame, the screw end on the lower transverse side of the terminal frame.
- the one long side of the clamp frame, which forms a support leg is shorter than the opposite long side, so that between the free end of the long side forming the support leg and the upper transverse side of the clamp frame arranged above it a distance is formed, which gives it resilient compliance, it is ensured that when inserting a single lead or also several connecting wires, for which a displacement of the box frame downwards is required, the clamping force is transmitted from the lower crossbar of the box frame over its side walls to its upper crossbar and via the clamping screw screwed into it on the lower transverse side of the terminal frame, so that the long sides of the terminal frame are not involved in the power transmission of the clamping force for the connecting wires. Because of the selected geometric conditions, it is provided that the screw head rests on the upper transverse side of the terminal frame, the resilient reaction force of which causes the screw connection described above to be pretensioned.
- this configuration combines the advantage that the support leg of the terminal frame, which is provided with the cam-like bulge and serves as a holding member for the box frame, remains free of deformation and thus its holding function for the box frame is not impaired.
- the terminal frame essentially for holding and guiding the box frame and of course for power transmission.
- the longitudinal side of the terminal frame opposite the support leg is provided with a molding which is matched to the respective application and location, for example with an arc running rail. It is also possible to use parts of a contact point, e.g. B. a fixed contact piece to be molded onto the terminal frame or to be electrically connected to it.
- connection terminal it is expedient to provide the terminal frame or its longitudinal side opposite the support leg with corresponding projections or recesses for fixing and centering.
- the opposite long side of the terminal frame is designed so that it projects at least in regions over the box frame reaching through the terminal frame on its two side walls , and thus reliably prevents twisting or tilting of the box frame in the terminal frame.
- a screw terminal 10 according to the invention is shown in side view, which is formed from a terminal frame 12 and a box frame 14, which are connected to one another by means of a clamping screw 16.
- a flat conductor 18 is inserted into the screw terminal and is fastened with the aid of the clamping screw 16.
- the clamp frame 12 is formed from a band-like flat material to form a rectangular open ring with an upper transverse side 20, a lower transverse side 24, a longitudinal side 22 connecting both transverse sides 20, 24 and a longitudinal side which adjoins the lower transverse side 24 and serves as a support leg 26.
- a defined gap is formed between the free end 27 of the longitudinal side of the frame clamp 12, referred to as the support leg 26, and the upper transverse side 20 adjacent thereto, which allows the upper transverse side 20 to be resiliently movable when the clamping screw 16 is tightened.
- the free space between the longitudinal sides 22 and 26 and the transverse sides 20 and 24 of the terminal frame 12 is penetrated by the loop-shaped box frame 14, which also has two mutually parallel side walls 30, each of which is provided with an elongated hole 32, in which one of the the lower transverse side 24 of the clamp frame 12 engages in a form-fitting guide tab 25.
- a lower crosspiece 34 is used at the lower end, which is arched outward in the manner of an arch, and an upper crosspiece 36, which is formed from flush overlapping right-angled bends of the two side walls 30 and in its flat web surface 38 has threaded bore 37.
- This threaded bore 37 serves to receive the already mentioned clamping screw 16, which is used to apply and transmit the predetermined clamping force for fastening the electrical conductors.
- FIG. 2 shows the top view of the arrangement according to FIG. 1, essentially showing the clamping screw 16 and the flat conductor piece 18, which for the most part covers the screw terminal 10 located underneath. Only the region of the upper transverse side 20 of the box frame 14 adjoining the longitudinal side 22 and one of two retaining flanks 23 formed on both sides of the longitudinal side 22, along which the box frame 14 can slide, can be seen.
- FIG. 3 shows a central longitudinal section through the arrangement of the screw terminal 10 shown in FIG. 1 with a flat conductor 18 fastened therein.
- the corresponding parts are provided with the same reference numbers as in FIG. 1.
- the upper transverse web 36 is formed from two flat sheet metal pieces which are arranged one above the other and lie closely against one another and which are each bent at right angles by the side walls 30 of the box frame 14.
- FIG. 4 shows a longitudinal section offset by 90 ° to the longitudinal section shown in FIG. 3 of the arrangement according to FIG. 1, from which further details of the inventive design of the screw terminal 10 can be seen.
- this arrangement shows the arrangement of the retaining flanks 23 formed on the longitudinal side 22 of the terminal frame 12, which is on both sides are integrally formed on the longitudinal side 22 and protrude beyond the box frame 14.
- the lower crosspiece 34 of the box frame 14 has a slightly curved shape, which serves to fix a wire conductor inserted between the lower crosspiece 34 of the box frame and the lower transverse side 24 of the terminal frame as centrally as possible, ie below the clamping screw 16, which, as can be seen in FIG. 5, tries to put on the lower transverse side 24 of the terminal frame 12 with its screw end.
- a tolerance distance due to tolerance between the screw end of the clamping screw 16 and the lower transverse side 24 of the clamping frame which is designated by the dimension "y" in FIG. 5, is in the distance between the free end 27 of the support leg 26 and the upper transverse side of the upper part Terminal frame 12 provided distance "x" already taken into account.
- a cam-like bulge 28 on the support leg 26 should be pointed out, which is stamped into the support leg 26 just below the free end 27 thereof.
- the bulge 28 is conical and directed inward and rests elastically on the box clamp 14 due to the resilient flexibility of the support leg 26, the distance between the bulge 28 and the upper transverse side 20 of the clamp frame located above it, as can be seen particularly in FIG. 3 is the thickness of the upper crossbar 36 of the box frame 14 corresponds.
- FIG. 6 shows the top view of the arrangement shown in FIG. 5, which essentially corresponds to the view known from FIG. 2. Different from this, however, the entire screw terminal 10 can be seen from above in FIG. H. Both the terminal frame 12 with its upper transverse side 20 and the transition of the upper transverse web 36 into the side walls 30 of the box frame 14. Furthermore, the retaining flanks 23 formed on both sides of the longitudinal side 22 connected to the upper transverse side 20 are shown, as well as a connected lead wire 19.
Landscapes
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Surgical Instruments (AREA)
- Discharge Heating (AREA)
- Casings For Electric Apparatus (AREA)
- Jigs For Machine Tools (AREA)
- Clamps And Clips (AREA)
Abstract
Description
Die Erfindung betrifft eine Schraubklemme für ein elektrisches Installationsgerät, insbesondere LS-Schalter, zum Anschluß eines oder/und mehrerer Anschlußdrähte oder Anschlußschienen, mit einem einstückigen, rechteckförmigen Klemmenrahmen, dessen obere Querseite eine Ausnehmung zur Aufnahme einer Klemmschraube aufweist, die mit einem den Klemmenrahmen schlaufenförmig durchgreifenden Kastenrahmen, der in seinem oberen, der oberen Querseite des Klemmenrahmens benachbarten Quersteg eine Gewindebohrung besitzt, zusammenarbeitet, wobei der Klemmenrahmen als offener Ring ausgebildet und zwischen seiner oberen Querseite und dem freien Ende einer einen Stützschenkel bildenden Längsseite, die kürzer ist als die gegenüberliegende Längsseite des Klemmenrahmens, ein definierter Spalt "X" vorgesehen ist.The invention relates to a screw terminal for an electrical installation device, in particular circuit breaker, for connecting one or / and several connecting wires or connecting rails, with a one-piece, rectangular terminal frame, the upper transverse side of which has a recess for receiving a clamping screw which is loop-shaped with a terminal frame penetrating box frame, which has a threaded hole in its upper, the upper transverse side of the terminal frame crossbar, the terminal frame is designed as an open ring and between its upper transverse side and the free end of a longitudinal leg forming a support leg, which is shorter than the opposite long side of the terminal frame, a defined gap "X" is provided.
Schraubklemmen finden in der elektrischen Installationstechnik sowohl einzeln für sich als auch eingesetzt in elektrische Installationsgeräte Verwendung zur Fixierung bzw. zum elektrischen Anschluß von elektrischen Leitern. Insbesondere bei Verwendung in elektrischen Installationsgeräten besteht häufig der Bedarf an Klemmvorrichtungen, die eine einfache Handhabung ermöglichen. Dabei ist häufig gefordert, daß sowohl einzelne Anschlußdrähte als auch Anschlußschienen gleichermaßen anschließbar sein müssen, ohne daß zusätzliche Vorrichtungen oder Vorkehrungen erforderlich sind.In electrical installation technology, screw terminals are used both individually and in electrical installation devices for fixing or for the electrical connection of electrical conductors. Particularly when used in electrical installation devices, there is often a need for clamping devices which enable simple handling. It is often required that both individual connecting wires and connecting rails must be able to be connected equally without additional devices or precautions being required.
Eine derartige in ein Gehäuse für ein elektrisches Installationsgerät einsetzbare als Rahmenklemme ausgebildete Schraubklemme ist aus der DE-OS 31 37 117 bekanntgeworden, bei der ein bandartiger Leiterstreifen zu einem viereckigen Klemmenrahmen gebogen ist, der von einem schlaufenförmigen Kastenrahmen durchgriffen ist. Eine Klemmschraube arbeitet mit dem Klemmenrahmen und dem Kastenrahmen zusammen und dient zur kraftschlüssigen Fixierung der Anschlußleiter, die sowohl als Draht als auch als Flachleiter in Form von Verbindungsschienen vorgesehen sein können.Such a screw terminal designed as a box terminal for use in a housing for an electrical installation device has become known from DE-OS 31 37 117, in which a band-like conductor strip is bent into a square terminal frame which is penetrated by a loop-shaped box frame. A clamping screw works together with the terminal frame and the box frame and serves for the non-positive fixing of the connecting conductors, which can be provided both as a wire and as a flat conductor in the form of connecting rails.
Während die Verbindungsschienen zwischen der oberen Querseite des Klemmenrahmens und dem Schraubenkopf der Klemmschraube verklemmt werden, ist zur Fixierung von einzelnen Anschlußdrahten vorgesehen, daß diese in die vom Kastenrahmen gebildete Schlaufe eingeführt werden, der daraufhin mittels der Klemmschraube gegen die untere Querseite des Klemmenrahmens angezogen wird. Hierbei ist es leicht möglich, daß aufgrund der durch die Klemmschraube aufgebrachten Klemmkraft die normalerweise parallel zueinander verlaufenden Längsseiten des Klemmenrahmens eine bleibende Deformation erleiden, indem sie sich bogenartig verwölben und hierdurch die Dauerhaftigkeit der kraftschlüssigen Befestigung beeinträchtigen, so daß eine Lockerung der Schraubverbindung resultieren kann.While the connecting rails are clamped between the upper transverse side of the terminal frame and the screw head of the clamping screw, it is provided for fixing individual connecting wires that they are inserted into the loop formed by the box frame, which is then tightened by means of the clamping screw against the lower transverse side of the terminal frame. It is easily possible that due to the clamping force exerted by the clamping screw, the normally parallel longitudinal sides of the terminal frame will suffer permanent deformation by arching like a bow and thereby impairing the durability of the non-positive fastening, so that the screw connection can be loosened.
Um diesen Nachteil zu begegnen, wäre zwar möglich, die Querschnitte der Seitenwände zu vergrößern und so deren Steifigkeit zu erhöhen. Diese Maßnahme ist aber zwangsläufig mit erhöhtem Materialeinsatz verbunden und erfordert überdies ggf. eine entsprechende Anpassung der Herstellwerkzeuge, wenn die Umformkraft der bisherigen Herstelleinrichtungen nicht ausreicht.To counter this disadvantage, it would be possible to enlarge the cross sections of the side walls and thus increase their rigidity. However, this measure is inevitably associated with an increased use of material and, moreover, may require a corresponding adjustment of the manufacturing tools if the forming force of the previous manufacturing devices is insufficient.
Aus der FR-A 1 120 862 ist eine Schraubklemme bekannt geworden, bei der ein kastenförmiges Element vorgesehen ist, das mit einem U-förmigen Klemmelement versehen ist, welches an einem Anschlußelement gelenkig gelagert ist. Das kastenförmige Element besitzt zwischen dem oberen Quersteg, der eine Ausnehmung zur Durchführung einer Klemmschraube aufweist, und dem benachbarten Längssteg einen Schlitz, offensichtlich damit eine bessere Montage von kastenförmigem Element und dem U-förmigen Klemmenelement erzielt werden kann.From FR-A 1 120 862 a screw terminal has become known in which a box-shaped element is provided which is provided with a U-shaped clamping element which is articulated on a connecting element. The box-shaped element has a slot between the upper cross bar, which has a recess for the passage of a clamping screw, and the adjacent longitudinal bar, so that a better assembly of the box-shaped element and the U-shaped clamping element can be achieved.
Bei der FR-A 1 093 738 ist anstatt des U-förmigen Klemmenelementes ein ebenfalls kastenförmiges Element vorgesehen; der besagte Schlitz dient dann dazu, das kastenförmige Klemmenelement in das kastenförmige Element einzufügen.In FR-A 1 093 738, a box-shaped element is also provided instead of the U-shaped terminal element; the said slot then serves to insert the box-shaped clamp element into the box-shaped element.
Ausgehend vom vorstehend erörterten Stand der Technik ist es daher Aufgabe der Erfindung, eine Schraubklemme der eingangs genannten Art anzugeben, die unter Vermeidung der Nachteile bei den bekannten Schraubklemmen sich durch einfache und materialsparende Gestaltung auszeichnet, eine kostengünstige Herstellung erlaubt und bei der die Längsseiten des Klemmenrahmens weitgehend unbeansprucht sind und keiner bleibenden Verformung unterliegen. Darüberhinaus soll auch die Bedienung vereinfacht werden.Starting from the prior art discussed above, it is therefore an object of the invention to provide a screw terminal of the type mentioned which, while avoiding the disadvantages of the known screw terminals, is characterized by a simple and material-saving design, allows cost-effective production and in which the long sides of the terminal frame are largely unstressed and are not subject to permanent deformation. In addition, the operation should also be simplified.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die im rechten Winkel gegenüber den Längsseiten des Klemmenrahmens versetzt angeordneten Seitenwände des Kastenrahmens mit Langlöchern versehen sind, in die an der unteren Querseite des Klemmenrahmens angeformte Führungslaschen eingreifen und von diesen Führungslaschen geführt sind, daß die obere Querseite sich beim Festschrauben der Klemmschraube federnd an das freie Ende des Stützschenkels annähert, daß die den Stützschenkel bildende Längsseite des Klemmenrahmens zur Materialeinsparung höchstens die halbe Breite der dieser gegenüber angeordneten, mit der oberen und unteren Querseite verbundenen Längsseite des Klemmenrahmens aufweist und mit einer nach innen weisenden Auswölbung versehen ist, die sich federnd an den oberen Quersteg des Kastenrahmens anlegt und diesen in wenigstens zwei Stellungen gegen Verschieben im Klemmenrahmen sichert.This object is achieved in that the side walls of the box frame, which are offset at right angles with respect to the long sides of the terminal frame, are provided with elongated holes, into which guide tabs formed on the lower transverse side of the terminal frame engage and are guided by these guide tabs in such a way that the upper transverse side is aligned at the Tightening the clamping screw resiliently approximates to the free end of the support leg that the long side of the terminal frame forming the supporting leg has at most half the width of the longitudinal side of the terminal frame arranged opposite it, connected to the upper and lower transverse side, and provided with an inward bulge to save material is that resiliently rests against the upper crossbar of the box frame and secures it in at least two positions against displacement in the terminal frame.
Mit dieser erfindungsgemäßen Lösung verbindet sich der besondere Vorteil, daß ohne weitere Mittel die Verschraubung in der erfindungsgemäßen Schraubklemme aufgrund der Rückfederung der den Stützschenkel bildenden Längsseite des Klemmenrahmens vorgespannt ist.This solution according to the invention is associated with the particular advantage that the screw connection in the screw terminal according to the invention is prestressed without any further means due to the resilience of the long side of the terminal frame forming the support leg.
Die erfindungsgemäß vorgesehene nockenartige Auswölbung dient dazu, den den Klemmenrahmen durchgreifenden Kastenrahmen in seiner jeweiligen Lage vorübergehend zu halten, indem sich der Stützschenkel mit der nockenartigen Auswölbung an den oberen Quersteg des Kastenrahmens anlegt. Die nockenartige Auswölbung wirkt hierbei als federnder Puffer, an welchem der obere Quersteg des Kastenrahmens anschlägt und der nur mit definiertem Kraftaufwand überwunden werden kann.The cam-like bulge provided according to the invention serves to temporarily hold the box frame reaching through the terminal frame in its respective position by the support leg with the cam-like bulge resting against the upper transverse web of the box frame. The cam-like bulge acts as a resilient buffer against which the upper crosspiece of the box frame strikes and which can only be overcome with a defined amount of force.
Der große Vorteil der mit dieser Verbesserung versehenen Schraubklemme besteht darin, daß je nach dem, ob Anschlußschienen oder Anschlußdrähte zu befestigen sind, die jeweils vorteilhafte, d. h. montagefreundliche Stellung des Kastenrahmens in Bezug auf den Klemmenrahmen vorher einstellbar ist, ohne daß sich diese Einstellung während der Montage selbsttätig ändert. Dabei ist vorgesehen, daß im Falle, daß Anschlußschienen zu befestigen sind, der obere Quersteg des Kastenrahmens unmittelbar neben der oberen Querseite des Klemmenrahmens leigt und die als Haltenocken wirkende Auswölbung am Stützsteg des Kastenrahmens an diesen anlegt. Im anderen Fall, wenn einzelne Anschlußdrähte zu befestigen sind, wird der Kastenrahmen nach unten gedrückt, so daß sein oberer Quersteg mit der unteren Querseite des Klemmenrahmens benachbart ist, wobei die nockenartige Auswölbung am Stützsteg des Klemmenrahmens den oberen Quersteg des Kastenrahmens von oben her beaufschlagt und eine Lageänderung durch Verschieben nach oben verhindert.The great advantage of the screw terminal provided with this improvement is that, depending on whether connecting rails or connecting wires are to be fastened, the advantageous, ie assembly-friendly position of the box frame with respect to the terminal frame can be set beforehand without this setting being changed during the Assembly changes automatically. It is provided that, in the event that connecting rails are to be fastened, the upper transverse web of the box frame is immediately adjacent to the upper transverse side of the terminal frame and the bulge acting as retaining cams on the supporting web of the box frame bears against the latter. In the other case, when individual connecting wires are to be fastened, the box frame is pressed down, so that its upper crossbar with the lower transverse side of the terminal frame is adjacent, wherein the cam-like bulge on the support web of the terminal frame acts on the upper crossbar of the box frame from above and prevents a change in position by moving upwards.
In weiterer vorteilhafter Ausgestaltung der Erfindung ist dabei vorgesehen, daß die nockenartige Auswölbung, die vorzugsweise kegelförmig ausgebildet ist, nahe dem freien Ende der den Stützschenkel bildenden Längsseite des Klemmenrahmens angeordnet ist wobei der Abstand zwischen der nockenartigen Auswölbung und der oberen Querseite des Klemmenrahmens etwa der Dicke des oberen Quersteges des Kastenrahmens entspricht bzw. geringfügig größer als dieser ist, so daß dieser in seiner oberen Stellung dicht an die obere Querseite des Klemmenrahmens angrenzt.In a further advantageous embodiment of the invention it is provided that the cam-like bulge, which is preferably conical, is arranged near the free end of the long side of the clamp frame forming the support leg, the distance between the cam-like bulge and the upper transverse side of the clamp frame being approximately the thickness of the upper crossbar of the box frame corresponds to or is slightly larger than this, so that in its upper position it adjoins the upper transverse side of the terminal frame.
Eine weitere vorteilhafte Ausgestaltung der Erfindung besteht darin, die Länge des Gewindeschaftes der Klemmschraube, d. h. des Abstandes zwischen Schraubenkopf und Schraubenende auf die Länge des Kastenrahmens bzw. des gleichlangen Klemmenrahmens anzupassen. Damit wird erreicht, daß im eingeschraubten Zustand, wenn der Schraubenkopf der Klemmschraube an der oberen Querseite des Klemmenrahmens anliegt und der Gewindeschaft soweit in die Gewindebohrung im oberen Quersteg des Kastenrahmens eingeschraubt ist, daß dieser an der oberen Querseite des Klemmenrahmens anliegt, das Schraubenende an der unteren Querseite des Klemmenrahmens anliegt.A further advantageous embodiment of the invention consists in the length of the threaded shaft of the clamping screw, i.e. H. the distance between the screw head and screw end to the length of the box frame or the same length of the terminal frame. This ensures that when screwed in, when the screw head of the clamping screw rests on the upper transverse side of the terminal frame and the threaded shaft is screwed into the threaded hole in the upper transverse web of the box frame so that it rests on the upper transverse side of the terminal frame, the screw end on the lower transverse side of the terminal frame.
In Verbindung mit dem kennzeichnenden Merkmal der erfindungsgemäßen Schraubklemme, nämlich, daß die eine Längsseite des Klemmenrahmens, die einen Stützschenkel bildet, kürzer ist als die gegenüberliegende Längsseite, so daß zwischen dem freien Ende der den Stützschenkel bildenden Längsseite und der darüber angeordneten oberen Querseite des Klemmenrahmens ein Abstand gebildet ist, der ihr federnde Nachgiebigkeit verleiht, ist sichergestellt, daß beim Einführen eines einzelnen Anschlußdrahtes oder auch mehrerer Anschlußdrähte, wozu eine Verschiebung des Kastenrahmens nach unten erforderlich ist, die Klemmkraft vom unteren Quersteg des Kastenrahmens über dessen Seitenwände zu seinem oberen Quersteg und über die darin eingeschraubte Klemmschraube auf die untere Querseite des Klemmenrahmens übertragen wird, so daß die Längsseiten des Klemmenrahmens an der Kraftübertragung der Klemmkraft für die Anschlußdrähte nicht beteiligt sind. Aufgrund der gewählten geometrischen Bedingungen ist dabei vorgesehen, daß der Schraubenkopf sich an der oberen Querseite des Klemmenrahmens anlegt, wobei deren federnde Reaktionskraft für eine Vorspannung der zuvor beschriebenen Verschraubung bewirkt.In connection with the characteristic feature of the screw clamp according to the invention, namely that the one long side of the clamp frame, which forms a support leg, is shorter than the opposite long side, so that between the free end of the long side forming the support leg and the upper transverse side of the clamp frame arranged above it a distance is formed, which gives it resilient compliance, it is ensured that when inserting a single lead or also several connecting wires, for which a displacement of the box frame downwards is required, the clamping force is transmitted from the lower crossbar of the box frame over its side walls to its upper crossbar and via the clamping screw screwed into it on the lower transverse side of the terminal frame, so that the long sides of the terminal frame are not involved in the power transmission of the clamping force for the connecting wires. Because of the selected geometric conditions, it is provided that the screw head rests on the upper transverse side of the terminal frame, the resilient reaction force of which causes the screw connection described above to be pretensioned.
Gleichzeitig verbindet sich mit dieser Ausgestaltung der Vorteil, daß der mit der nockenartigen Auswölbung versehene und als Halteglied für den Kastenrahmen dienende Stützschenkel des Klemmenrahmens verformungsfrei bleibt und damit seine Haltefunktion für den Kastenrahmen nicht beeinträchtigt ist.At the same time, this configuration combines the advantage that the support leg of the terminal frame, which is provided with the cam-like bulge and serves as a holding member for the box frame, remains free of deformation and thus its holding function for the box frame is not impaired.
Auch beim Anschluß eines Flachleiters, z. B. einer Stromsammelschiene, sind die Längsseiten des Klemmenrahmens an der Übertragung der Klemmkraft nicht beteiligt, da diese zwischem dem Schraubenkopf der oberen Querseite des Klemmenrahmens sowie dem oberen Quersteg des Kastenrahmens ausschließlich über den Gewindeschaft der Klemmschraube erfolgt.Even when connecting a flat conductor, e.g. B. a busbar, the long sides of the terminal frame are not involved in the transmission of the clamping force, since this takes place between the screw head of the upper transverse side of the terminal frame and the upper crossbar of the box frame exclusively via the threaded shaft of the clamping screw.
Während bei bekannten Schraubklemmen zur Übertragung der Klemmkraft insbesondere die Seitenwände des Klemmenrahmens herangezogen werden und aus diesem Grund die Ausgestaltung des Klemmenrahmens als geschlossener Ring, bei dem die eine Längsseite mit der benachbarten Querseite des Klemmenrahmens formschlüssig verbunden ist, bevorzugt ist, dient bei der erfindungsgemäßen Schraubklemme der Klemmenrahmen im wesentlichen zur Halterung und Führung des Kastenrahmens sowie selbstverständlich zur Stromübertragung.While in known screw terminals the transmission of the clamping force in particular the side walls of the terminal frame are used and for this reason the configuration of the terminal frame as a closed ring, in which one longitudinal side is positively connected to the adjacent transverse side of the terminal frame, is preferred, is used in the screw terminal according to the invention the terminal frame essentially for holding and guiding the box frame and of course for power transmission.
In weiterer vorteilhafter Ausgestaltung der erfindungsgemäßen Schraubklemme ist ferner vorgesehen, daß die dem Stützschenkel gegenüberliegende Längsseite des Klemmenrahmens mit einer Anformung versehen ist, die auf den jeweiligen Einsatzzweck und Einsatzort abgestimmt ist, beispielsweise mit einer Lichtbogenlaufschiene. Ebenso ist es auch möglich, Teile einer Kontaktstelle, z. B. ein Festkontaktstück, an den Klemmenrahmen anzuformen bzw. mit diesem elektrisch leitend zu verbinden.In a further advantageous embodiment of the screw terminal according to the invention it is further provided that the longitudinal side of the terminal frame opposite the support leg is provided with a molding which is matched to the respective application and location, for example with an arc running rail. It is also possible to use parts of a contact point, e.g. B. a fixed contact piece to be molded onto the terminal frame or to be electrically connected to it.
Insbesondere wenn ein weiteres Leiterteil mit der Anschlußklemme verbunden werden soll, ist es zweckmäßig, den Klemmenrahmen bzw. seine dem Stützschenkel gegenüberliegende Längsseite mit entsprechenden Anformungen oder Ausnehmungen zur Fixierung und Zentrierung zu versehen.In particular, if a further conductor part is to be connected to the connection terminal, it is expedient to provide the terminal frame or its longitudinal side opposite the support leg with corresponding projections or recesses for fixing and centering.
Während der Stützschenkel des Klemmenrahmens sehr schmal gehalten ist, nicht zuletzt, um Material zu sparen, aber auch um den gewünschten Rückfedereffekt zu bieten, ist die gegenüberliegende Längsseite des Klemmenrahmens so ausgebildet, daß sie zumindest bereichsweise den den Klemmenrahmen durchgreifenden Kastenrahmen an dessen beiden Seitenwänden überragt, und so ein Verdrehen oder Verkanten des Kastenrahmens im Klemmenrahmen sicher verhindert.While the support leg of the terminal frame is kept very narrow, not least in order to save material, but also to provide the desired spring-back effect, the opposite long side of the terminal frame is designed so that it projects at least in regions over the box frame reaching through the terminal frame on its two side walls , and thus reliably prevents twisting or tilting of the box frame in the terminal frame.
Aufgrund von Toleranzen bei der Fertigung der erfindungsgemäßen Schraubklemme ist nicht auszuschließen, daß bei voll eingeschraubter Klemmschraube ihr Schraubenende nicht an der unteren Querseite des Klemmenrahmens anliegt, sondern daß auch hier ein spaltartiger Zwischenraum besteht. Die Größe dieses zwischen der unteren Querseite des Klemmrahmens und dem Schraubenende auftretenden Spaltes ist jedoch stets kleiner dem Abstand zwischen dem freien Ende des Stützschenkels und der oberen Querseite des Klemmenrahmens und bei der Festlegung der Spaltweite dieses Spaltes berücksichtigt.Due to tolerances in the manufacture of the screw terminal according to the invention, it cannot be ruled out that when the clamping screw is fully screwed in, its screw end does not rest on the lower transverse side of the terminal frame, but that there is also a gap-like space here. However, the size of this gap occurring between the lower transverse side of the clamping frame and the screw end is always smaller the distance between the free end of the support leg and the upper transverse side of the clamping frame and when determining the gap width of this gap.
Diese und weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.These and further advantageous refinements of the invention are specified in the subclaims.
Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles sollen die Erfindung, vorteilhafte Ausgestaltungen und Verbesserungen sowie weitere Vorteile der Erfindung näher erläutert und beschrieben werden.The invention, advantageous refinements and improvements and further advantages of the invention are to be explained and described in more detail using an exemplary embodiment shown in the drawing.
Es zeigen:
- Figur 1
- Eine erfindungsgemäße Schraubklemme mit eingeführtem Flachleiter in Seitenansicht,
- Figur 2
- die Anordnung gemäß Figur 1, in Draufsicht,
- Figur 3
- die erfindungsgemäße Schraubklemme nach Figur 1 im Längsschnitt,
- Figur 4
- die Schraubklemme nach Figur 1 im Längsschnitt jedoch gegenüber Figur 3 um 90° versetzt,
- Figur 5
- die erfindungsgemäße Schraubklemme mit eingeführtem Anschlußdraht in Seitenansicht,
- Figur 6
- die Anordnung gemäß Figur 5 in Draufsicht.
- Figure 1
- A screw terminal according to the invention with an inserted flat conductor in side view,
- Figure 2
- the arrangement according to Figure 1, in plan view,
- Figure 3
- the screw terminal according to the invention according to Figure 1 in longitudinal section,
- Figure 4
- 1 in longitudinal section but offset by 90 ° with respect to FIG. 3,
- Figure 5
- the screw terminal according to the invention with inserted connecting wire in side view,
- Figure 6
- the arrangement of Figure 5 in plan view.
In Figur 1 ist eine erfindungsgemäße Schraubklemme 10 in Seitenansicht dargestellt, die aus einem Klemmenrahmen 12 und einem Kastenrahmen 14 gebildet ist, die mittels einer Klemmschraube 16 miteinander verbunden sind. In die Schraubklemme ist ein Flachleiter 18 eingeführt, der mit Hilfe der Klemmschraube 16 befestigt ist.In Figure 1, a
Der Klemmenrahmen 12 ist aus bandartigem Flachmaterial zu einem rechteckförmigen offenen Ring mit einer oberen Querseite 20, einer unteren Querseite 24, einer beide Querseiten 20, 24 verbindenden Längsseite 22 und einer an die untere Querseite 24 senkrecht anschließende als Stützschenkel 26 dienende Längsseite gebildet.The
Zwischen dem freien Ende 27 der als Stützschenkel 26 bezeichneten Längsseite der Rahmenklemme 12 und der hierzu benachbarten oberen Querseite 20 ist ein definierter Spalt gebildet, der der oberen Querseite 20 eine federnde Beweglichkeit beim Festschrauben der Klemmschraube 16 ermöglicht.A defined gap is formed between the
Der Freiraum zwischen den Längsseiten 22 und 26 und den Querseiten 20 und 24 des Klemmenrahmens 12 wird durchgriffen von dem schlaufenförmig ausgebildeten Kastenrahmen 14, der ebenfalls zwei zueinander parallel angeordnete Seitenwände 30 aufweist, die jeweils mit einem Langloch 32 versehen sind, in welche eine an die untere Querseite 24 des Klemmenrahmens 12 angeformte Führungslasche 25 formschlüssig eingreift.The free space between the
Zur Verbindung der beiden Seitenwände 30 des Kastenrahmens 14 dient am unteren Ende ein unterer Quersteg 34, der bogenartig nach außen gewölbt ist, und ein oberer Quersteg 36, der aus sich bündig überlappenden rechtwinkligen Abbiegungen der beiden Seitenwände 30 gebildet ist und in seiner ebenen Stegfläche 38 Gewindebohrung 37 besitzt. Diese Gewindebohrung 37 dient zur Aufnahme der bereits erwähnten Klemmschraube 16, welche zur Aufbringung und Übertragung der vorgegebenen Klemmkraft zur Befestigung der elektrischen Leiter dient.To connect the two
Die näheren Einzelheiten der Ausgestaltung des oberen Quersteges 36 des Kastenrahmens 14 sowie der Gewindebohrung 37 für die Klemmenschraube 16 ist in Figur 1 in einem kreisförmigen Ausschnitt besonders gezeigt.The details of the design of the
In Figur 2 ist die Draufsicht auf die Anordnung gemäß Figur 1 wiedergegeben, wobei im wesentlichen die Klemmschraube 16, sowie das flache Leiterstück 18 zu erkennen sind, welches die darunter befindliche Schraubklemme 10 größtenteils verdeckt. Lediglich der an die Längsseite 22 anschließende Bereich der oberen Querseite 20 des Kastenrahmens 14 sowie eine von zwei beiderseits an die Längsseite 22 angeformten Halteflanken 23, an welcher der Kastenrahmen 14 entlanggleiten kann, sind zu erkennen.FIG. 2 shows the top view of the arrangement according to FIG. 1, essentially showing the clamping
In Figur 3 ist ein mittig geführter Längsschnitt durch die in Figur 1 gezeigte Anordnung der Schraubklemme 10 mit einem darin befestigten Flachleiter 18 gezeigt. Soweit in dieser Darstellung zutreffend, sind die entsprechenden Teile mit den gleichen Bezugsziffern wie in Figur 1 versehen. Deutlicher als in Figur 1 ist in Figur 3 zu erkennen, daß der obere Quersteg 36 aus zwei übereinander angeordneten und eng aneinander anliegenden ebenen Blechstücken gebildet ist, die von den Seitenwänden 30 des Kastenrahmens 14 jeweils rechtwinklig umgebogen sind.FIG. 3 shows a central longitudinal section through the arrangement of the
In Figur 4 ist ein zu dem in Figur 3 gezeigten Längsschnitt der Anordnung nach Figur 1 um 90° versetzter Längsschnitt dargestellt, aus welchem weitere Details der erfindungsgemaßen Ausgestaltung der Schraubklemme 10 ersichtlich sind. Insbesondere ist in dieser Darstellung die Anordnung der an die Längsseite 22 der Klemmenrahmens 12 angeformten Halteflanken 23 ersichtlich, welche beiderseits an die Längsseite 22 angeformt sind und hierbei die Kastenrahmen 14 überragen. Ferner ist in dieser Darstellung zu erkennen, daß der untere Quersteg 34 der Kastenrahmen 14 eine leicht gekrümmte Form aufweist, die dazu dient, einen zwischen dem unteren Quersteg 34 der Kastenrahmen und der unteren Querseite 24 des Klemmenrahmens eingeführten Drahtleiter möglichst mittig zu fixieren, d. h. unterhalb der Klemmschraube 16, die wie in Figur 5 ersichtlich sich an der unteren-Querseite 24 der Klemmenrahmens 12 mit ihrem Schraubenende anzulegen versucht.FIG. 4 shows a longitudinal section offset by 90 ° to the longitudinal section shown in FIG. 3 of the arrangement according to FIG. 1, from which further details of the inventive design of the
Ein hierbei toleranzbedingter bleibender Abstand zwischen dem Schraubenende der Klemmschraube 16 und der unteren Querseite 24 des Klemmenrahmens, der in Figur 5 mit dem Maß "y" bezeichnet ist, ist in dem zwischen dem freien Ende 27 des Stützschenkels 26 und der darüber angeordneten oberen Querseite des Klemmenrahmens 12 vorgesehenen Abstand "x" bereits berücksichtigt.A tolerance distance due to tolerance between the screw end of the clamping
Ergänzend zu den Ausführungen zu Figur 1, Figur 3 und Figur 5 ist auf eine nockenartige Auswölbung 28 am Stützschenkel 26 hinzuweisen, die knapp unterhalb des freien Endes 27 des Stützschenkels 26 in diesen eingeprägt ist. Die Auswölbung 28 ist kegelförmig ausgebildet und nach innen gerichtet und lehnt sich aufgrund der federnden Nachgiebigkeit des Stützschenkels 26 elastisch an die Kastenklemme 14 an, wobei der Abstand zwischen der Auswölbung 28 und der darüber befindlichen oberen Querseite 20 des Klemmenrahmens, wie insbesondere in Figur 3 ersichtlich ist, der Dicke des oberen Quersteges 36 des Kastenrahmens 14 entspricht. Mit Hilfe dieses Nockens 28 ist es möglich, den Kastenrahmen entweder in einer oberen, wie in Figur 1 und Figur 3 gezeigt ist, zu halten, wodurch das Einführen eines anzuschließenden Flachleiters 18 erleichtert ist. Durch leichten Druck auf die zum Teil, beispielsweise wie in Figur 5 erkennbar, herausgeschraubte Klemmschraube 16 ist es möglich, den Kastenrahmen nach unten zu drücken, wobei sich der mit dem Nocken 28 versehene Stützschenkel 26 nach außen biegt, bis der obere Quersteg 36 des Kastenrahmens 14 am Nocken 28 vorbei ist. Ein selbsttätiges Zurückgleiten des Kastenrahmens 14, wodurch sich der Abstand zwischen dem unteren Quersteg 34 des Kastenrahmens und der unteren Querseite 24 des Klemmenrahmens 12 verändert, ist hierdurch ausgeschlossen.In addition to the explanations for FIG. 1, FIG. 3 and FIG. 5, a cam-
Auf die zuvor beschriebene Ausgestaltung der erfindungsgemäßen Schraubklemme 10 ist die Montagefreundlichkeit eines mit der Schraubklemme 10 ausgestatteten elektrischen Installationsgerätes deutlich verbessert.The ease of installation of an electrical installation device equipped with the
In Figur 6 ist die Draufsicht auf die in Figur 5 gezeigte Anordnung wiedergegeben, die im wesentlichen der aus Figur 2 bekannten Ansicht entspricht. Unterschiedlich dazu ist in Figur 6 jedoch die gesamte Schraubklemme 10 von oben erkennbar, d. h. sowohl der Klemmenrahmen 12 mit seiner oberen Querseite 20 als auch jeweils der Übergang des oberen Quersteges 36 in die Seitenwände 30 des Kastenrahmens 14. Ferner sind die beiderseits der mit der oberen Querseite 20 verbundenen Längsseite 22 angeformten Halteflanken 23 gezeigt sowie ein angeschlossener Leitungsdraht 19.FIG. 6 shows the top view of the arrangement shown in FIG. 5, which essentially corresponds to the view known from FIG. 2. Different from this, however, the
Claims (9)
- Screw-type terminal (10) for an electrical accessory, in particular circuit breaker, for the connection of one and/or more connecting wires or connecting bars (18), having an integral rectangular terminal frame (12), the upper transverse side (20) of which has a recess for accommodating a clamping screw (16) which cooperates with a box-type frame (14) which reaches in a loop shape through the terminal frame (12) and, in its upper transverse web (36) adjoining the upper transverse side (20) of the terminal frame (12), has a threaded bore, the terminal frame (12) being designed as an open ring, and a defined gap "x" being provided between its upper transverse side (20) and the free end (27) of a longitudinal side which forms a supporting limb (26) and is shorter than the opposite longitudinal side (22) of the terminal frame (12), characterized in that the side walls (30) of the box-type frame (14), which are arranged off-set at right angles to the longitudinal sides of the terminal frame (12), are provided with slots (32), in which guide lugs (25) integrally formed on the lower transverse side (24) of the terminal frame (12) engage and are guided by these guide lugs (23), in that the upper transverse side (20) resiliently approaches the free end (27) of the supporting limb (26) as the clamping screw (16) is screwed tight, in that, for the purpose of saving material, the longitudinal side of the terminal frame (12) which forms the supporting limb (26) is no more than half the width of the longitudinal side (22) of the terminal frame (12) which is arranged opposite the latter and is connected to the upper and the lower transverse side (20, 24) and is provided with an inward-pointing bulge (28) which comes to rest resiliently on the upper transverse web (36) of the box-type frame (14) and secures the latter in at least two positions against displacement in the terminal frame (12).
- Screw-type terminal according to Claim 1, characterized in that the bulge (28) is arranged near to the free end (27) of the longitudinal side of the terminal frame (12) which forms the supporting limb (26) and is preferably of conical construction, and in that the bulge (28) reaches into the space bounded by the two side walls (30) as well as by the lower and upper transverse web (34, 36) of the box-type terminal (14).
- Screw-type terminal according to one of the preceding claims, characterized in that a retention flank (23) is formed integrally on both sides of the longitudinal side (22) of the terminal frame (12) which is connected to the upper and the lower transverse side (20, 24), said retention flank serving as a sliding and supporting surface for the box-type frame (14), which is arranged displaceably in the terminal frame, and preventing its twisting or tilting.
- Screw-type terminal according to one of the preceding claims, characterized in that a conductor piece which serves for the connection to a functional part, e.g. contact point, of the electromagnetic accessory, is formed integrally on the longitudinal side (22) connected to the upper and lower transverse side (20, 24) of the terminal frame (12).
- Screw-type terminal according to one of Claims 1 to 4, characterized in that the longitudinal side (22) provided with the retention flanks is provided with recesses which serve for the fixing and centring of a conductor piece which is secured on the longitudinal side.
- Screw-type terminal according to Claim 5, characterized in that the conductor piece is welded to the longitudinal side (22).
- Screw-type terminal according to one of the preceding claims, characterized in that the clamping screw (16) has a screwed shank provided with a thread as far as the screw head.
- Screw-type terminal according to Claim 7, characterized in that the length of the screwed shank of the clamping screw (16) corresponds to the clearance between the outer side of the upper transverse side (20) and the inner side of the lower transverse side (24) of the terminal frame (12).
- Screw-type terminal according to Claim 8, characterized in that, as the clamping screw (16) is screwed tight, the lower transverse web (34) of the box-type frame (14) is pulled towards the lower transverse side (24), against the inner side of which the end of the clamping screw (16) rests and thus directs the applied clamping force into the clamping screw (16), with the result that the longitudinal sides (22, 26) of the terminal frame (12) are unstressed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3811023A DE3811023A1 (en) | 1988-03-31 | 1988-03-31 | SCREW TERMINAL |
| DE3811023 | 1988-03-31 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0336251A2 EP0336251A2 (en) | 1989-10-11 |
| EP0336251A3 EP0336251A3 (en) | 1990-10-03 |
| EP0336251B1 true EP0336251B1 (en) | 1995-05-10 |
Family
ID=6351179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89105376A Expired - Lifetime EP0336251B1 (en) | 1988-03-31 | 1989-03-25 | Clamping screw |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0336251B1 (en) |
| AT (1) | ATE122502T1 (en) |
| DE (2) | DE3811023A1 (en) |
| DK (1) | DK152289A (en) |
| ES (1) | ES2074450T3 (en) |
| NO (1) | NO891344L (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4133705A1 (en) * | 1991-10-11 | 1993-04-15 | Felten & Guilleaume Energie | SCREW TERMINAL FOR ELECTRICAL INSTALLATION DEVICES |
| DE19615837C2 (en) * | 1996-04-20 | 2000-12-21 | Abb Patent Gmbh | Connector |
| FR2798514B1 (en) * | 1999-09-15 | 2001-11-02 | Schneider Electric Ind Sa | ELASTIC CAGE CONNECTION TERMINAL |
| SI2204884T1 (en) | 2008-12-30 | 2012-07-31 | Landis & Gyr Europ Ag | Cage screw connector |
| FR2997237B1 (en) | 2012-10-23 | 2014-11-21 | Schneider Electric Ind Sas | ELASTIC CAGE FOR CONNECTING TERMINAL AND TERMINAL COMPRISING SUCH A CAGE |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR67552E (en) * | 1955-02-09 | 1958-03-14 | Device for connecting an electrical conductor to a connection terminal | |
| FR1120826A (en) * | 1955-03-14 | 1956-07-13 | Device for connecting an electrical conductor to a connection terminal | |
| DE1972976U (en) * | 1967-09-08 | 1967-11-23 | C A Weidmueller K G | ARRANGEMENT OF SCREW TERMINALS WITH STRAPS. |
| DE1977459U (en) * | 1967-10-27 | 1968-01-25 | C A Weidmueller K G | ARRANGEMENT OF SCREW TERMINALS. |
| DE2642262C3 (en) * | 1976-09-20 | 1980-12-11 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Box terminal for connecting electrical lines |
| DE3137117A1 (en) * | 1981-09-18 | 1983-04-14 | Brown, Boveri & Cie Ag, 6800 Mannheim | "SCREW TERMINAL" |
-
1988
- 1988-03-31 DE DE3811023A patent/DE3811023A1/en not_active Withdrawn
-
1989
- 1989-03-25 AT AT89105376T patent/ATE122502T1/en not_active IP Right Cessation
- 1989-03-25 DE DE58909223T patent/DE58909223D1/en not_active Expired - Lifetime
- 1989-03-25 EP EP89105376A patent/EP0336251B1/en not_active Expired - Lifetime
- 1989-03-25 ES ES89105376T patent/ES2074450T3/en not_active Expired - Lifetime
- 1989-03-29 DK DK152289A patent/DK152289A/en not_active IP Right Cessation
- 1989-03-30 NO NO89891344A patent/NO891344L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ATE122502T1 (en) | 1995-05-15 |
| DK152289D0 (en) | 1989-03-29 |
| ES2074450T3 (en) | 1995-09-16 |
| NO891344L (en) | 1989-10-02 |
| DE58909223D1 (en) | 1995-06-14 |
| DK152289A (en) | 1989-10-01 |
| NO891344D0 (en) | 1989-03-30 |
| EP0336251A3 (en) | 1990-10-03 |
| EP0336251A2 (en) | 1989-10-11 |
| DE3811023A1 (en) | 1989-10-19 |
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