EP0291989B1 - Low voltage bus bar - Google Patents

Low voltage bus bar Download PDF

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Publication number
EP0291989B1
EP0291989B1 EP19880108058 EP88108058A EP0291989B1 EP 0291989 B1 EP0291989 B1 EP 0291989B1 EP 19880108058 EP19880108058 EP 19880108058 EP 88108058 A EP88108058 A EP 88108058A EP 0291989 B1 EP0291989 B1 EP 0291989B1
Authority
EP
European Patent Office
Prior art keywords
bus bar
bar according
jaws
adaptor
conductor
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
Application number
EP19880108058
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German (de)
French (fr)
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EP0291989A1 (en
Inventor
Eckhard Halemeier
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.)
Brilliant AG
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Brilliant AG
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Filing date
Publication date
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Publication of EP0291989A1 publication Critical patent/EP0291989A1/en
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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
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/34—Supporting elements displaceable along a guiding element
    • F21V21/35—Supporting elements displaceable along a guiding element with direct electrical contact between the supporting element and electric conductors running along the guiding element

Definitions

  • the invention relates to a low-voltage busbar with a hollow profile having a longitudinal slot and a conductor held in the hollow profile and accessible from the outside through the longitudinal slot, as well as an adapter for drawing current from the conductor.
  • Busbars are primarily known for the range of 220 volts in numerous embodiments.
  • a conductor rail specially tailored to the low-voltage range is described in the utility model G 86 20 925.6 of the applicant.
  • the use of low voltage in the order of 12 volts offers the possibility of creating extremely filigree lighting systems that hardly appear visually.
  • this system has a low stability and is therefore not applicable in all cases.
  • the invention has for its object to provide a slim and yet sufficiently stable conductor rail as a carrier for low-voltage lights.
  • the adapter which can serve as a base for lights or other consumers, is essentially attached to the outside of the busbar. Because the interior of the power rail is not for attaching the adapter required, the cross section of the busbar can be kept extremely small. For the rest, only one conductor must be provided in the interior of the conductor rail, since it is permissible in the low-voltage range to use the metallic housing of the conductor rail as a second conductor in accordance with the relevant regulations.
  • the adapter preferably comprises two jaws which can be pivoted relative to one another and which have claws directed inwards at their ends and are mounted on a common shaft.
  • the jaws with the claws can encompass the profile of the busbar as a whole, or the claws can enter longitudinal grooves on the opposite sides of the profile.
  • the two longitudinal grooves and a further, opposite the longitudinal slot are preferably formed by appropriately drawing in the wall material of the hollow profile.
  • the grooves have the function of beads which, despite the small cross section, give the hollow profile high rigidity.
  • the hollow profile preferably has an essentially elliptical cross section in which the longitudinal slot is located on a narrow side. In this way, a relatively high bending stiffness is achieved with the slot underneath.
  • the conductor is preferably held in an overall cross-sectionally U-shaped profile made of an elastic, non-conductive material, for example rubber or plastic, which is pressed with the closed side first into the longitudinal slot and whose leg is in the pressed-in position at the edges of the longitudinal slot Support and be slightly compressed by this, so that the conductor is clamped inside the U-profile.
  • an elastic, non-conductive material for example rubber or plastic
  • a busbar 10 is shown in a greatly enlarged cross section, the overall outline of which is substantially elliptical.
  • a longitudinal slot 12 is located on the narrow side of the ellipse at the bottom in FIG. 1, which is generally also at the bottom in the assembled position of the busbar.
  • the busbar thus represents a hollow profile which is open on one side and consists of a conductive material, in particular metal .
  • Grooves 14, 16 are provided on the broad sides of the ellipse on the right and left in FIG. 1, which are not machined into the surface of the hollow profile, but are formed by the sheet material being drawn in in an arc.
  • a corresponding groove 18 is on the the longitudinal slot 12 opposite the upper side of the hollow profile.
  • a cross-sectionally U-shaped support profile 20 is inserted over its entire length.
  • the carrier profile 20 consists of an elastic, non-conductive material and thus also serves to receive and isolate the conductor 24.
  • grooves 26, 28 are grooves 26, 28 on their outer sides, which engage with the ones not designated Allow edges of the longitudinal slot 12 of the busbar 10.
  • the support profile 20 is dimensioned with respect to the width of the longitudinal slot 12 so that the legs of the support profile are compressed slightly elastically in the inserted position. In this way, the carrier profile is held securely. At the same time, the conductor is clamped.
  • the carrier profile 20 is supported at the same time by inwardly directed bulges 30, 32, which are formed by forming the grooves 14, 16 on the outside of the busbar 10.
  • a busbar 34 according to FIG. 2 essentially corresponds to the busbar 10 according to FIG. 1, but is elongated in the direction of the main axis of the ellipse.
  • relatively wide grooves 36, 38 are provided in FIG.
  • the grooves 36, 38 differ in their width from the grooves 14, 16 to the same extent as the busbars according to FIGS. 1 and 2 in the main dimension of their cross section.
  • the profiles of the two busbars 10, 34 thus differ only in that, in the profile according to FIG. 2, flat wall sections are inserted in the middle on both sides, while the upper and lower end regions match those of the profile according to FIG. The purpose of these geometrical relationships will be discussed later.
  • the interior space additionally obtained in the hollow profile according to FIG. 2 can be used for the laying of additional lines 40.
  • these can be primary conductors that are used to supply additional transformers within the system.
  • FIGS 3 and 4 show a connector or an adapter 42, which allows the connection of a lamp or other consumer, with essentially the same structure, but can also be used for power supply or as a carrier for hanging the busbar.
  • the adapter comprises a cylindrical shaft 44, on which two jaws 46, 48 arranged in the form of pliers are pivotally mounted in a common axis 49. At the ends of the jaws 46, 48 there are inwardly projecting claws 50, 52. The position of the jaws shown in Figure 4 is their inner end position. From this end position, the jaws can be spread slightly.
  • the shaft 44 has an external thread, not designated, into which a screw sleeve 54 surrounding the shaft engages.
  • a ring 56 surrounds the shaft at its lower end.
  • FIG. 4 It can be seen from FIG. 4 that the rear sides, designated 58 and 60, of the two jaws 46, 48 lie in one plane in the inner end position of the jaws shown in FIG.
  • the screw sleeve 54 is shown in FIGS. 3 and 4 in each case on the left side in an upward screwed position and on the right side in a downward screwed position. In the screwed down position, the screw sleeve 54 presses against the rear sides 58, 60 of the jaws 46, 48 via the ring 56, so that the jaws cannot be expanded.
  • an arcuate leaf spring 62 is located in the interior of the jaws 46, 48, which biases the jaws slightly into the inner end position.
  • a coaxial bore 64 through which a cable, not shown, is passed.
  • the bore 64 widens at its lower end to a coaxial, cylindrical chamber 66, in which a sleeve 68 made of insulating material is located.
  • a further sleeve 72 provided with a flange 70 adjoins the sleeve 68 at the bottom in FIG. 3.
  • the sleeve 72 has a concentric bore 74 in which a conductor pin 76 is guided to be vertically displaceable. The conductor pin 76 emerges downwards in FIGS. 3 and 4 into the space between the jaws 46, 48.
  • flange 78 at the upper end, which moves in the vertical direction within the sleeve 68, but has a larger diameter than the bore 74 of the lower sleeve 72 and thus forms a lower end stop for the conductor pin 76.
  • a compression spring 82 which prestresses the conductor pin downwards.
  • the axis 49 is divided in the region of the lower sleeve 72.
  • the adapter 42 can be pushed onto the busbar 10, 34 from the outside and locked thereon. For this purpose, it is brought up to the conductor rail from below in the position opposite to that in FIG.
  • the claws 50, 52 run onto the side flanks of the busbars 10, 34 on both sides of the longitudinal slot 12, so that the jaws 46, 48 are spread until the claws 50, 52 into the grooves 14, 16 or the grooves 36, 38 of the conductor rail. This leads to an audible Clicking noise and at least temporarily fixing the adapter to the track.
  • the conductor pin 76 has resiliently come into contact with the conductor 24. When the screw sleeve 54 is tightened, spreading of the jaws 46, 48 is no longer possible.
  • the screw sleeve 54 is first turned back, and then the adapter is tilted transversely to the busbar. One of the claws 50, 52 emerges from the associated groove 14, 16 or groove 36, 38.
  • FIG. 5 shows a holder 84 for busbars 10, 34, which completely matches the adapter 42 described above, except that there is no conductor pin 76 and the directly associated parts.
  • the holder can be slid onto a busbar from above as well as from below, based on FIGS. 1 and 2, and clamped thereon in the manner described. It can therefore be used to hang the conductor rail on a ceiling or to mount the conductor rail on a surface.
  • the adapter 42 according to FIGS. 3 and 4 can be used not only to supply consumers attached to the busbar, but also to feed current into the busbar.
  • the connection to the conductor 24 can be established in the manner already described.
  • a connection to the rail serving as a second pole is also possible, provided the adapter is placed on the rail from above in FIGS. 1 and 2. In this case, the conductor pin 16 enters the upper groove 18.
  • the electrical contacting of the conductive busbar housing takes place directly via the jaws 46, 48 made of conductive material and the shaft 44 of the adapter. If the busbar 10 is painted and thus has an electrically insulating surface, a modified embodiment of the adapter 42 is used, which is to be explained below with reference to FIGS. 6 and 7.
  • the jaws 46, 48 are made of plastic, and the electrical contact is made with the aid of resilient contact tongues 86, which press against the unpainted, outwardly sloping edges of the longitudinal slot 12 of the busbar.
  • the contact tongues 86 are each angled downward at their inner end and held on the axis 49 between the bearing sections of the jaws 46, 48 in such a way that they abut a head section 88 of the shaft 44.
  • the shaft 44 is screwed at its lower end to a cantilever tube 90 which is also made of conductive material.
  • a locking sleeve 94 provided with a handle 92 is provided in this embodiment, which can be locked in a bayonet-like manner on the shaft 44.
  • the locking sleeve 94 has an oval cross section and is provided on its inner circumference with lugs 96 lying on the larger axis of the oval, which together with projections 98 formed on part of the circumference of the shaft 44 bring about the bayonet-like locking.
  • the conductor pin 76 is slidably guided in an insulating sleeve 100 which on its outer circumference with a circumferential groove 102 is provided and is secured against axial displacement by the ends of the two sections of the axis 49.
  • the conductor pin 76 is soldered at its lower end to a conductive connecting piece 104, for example a copper rod, which is surrounded in its central portion by insulation 106 and extends coaxially through the shaft 44 and the extension tube 90 to a rotary coupling 108, which according to FIG lower end of the boom tube is attached.
  • the rotary coupling 108 has a housing 110 made of plastic, on which a holder 112 for a lamp or the like is attached or formed.
  • the housing 110 is rotatable on a collar 114 of a bush 116 screwed to the extension tube 90 and accommodates a seat 120 provided with an inner cone 118 made of conductive material, which is biased by a spring 122 against the stripped lower end of the connecting piece 104.
  • the seat 120 is electrically insulated from the conductive socket 116 by a cup-shaped guide bush 124 and is connected via a conductive ring 126 to a connecting cable 128 of the lamp (not shown).
  • Another connecting cable 130 of the lamp is connected to a tongue 132 of a contact plate 134 which is in sliding contact with the circumference of the socket 116.
  • the rotary coupling 108 thus creates a conductive connection to the busbar housing via the contact plate 134, the bushing 116 and the extension tube 90 and a conductive connection to the conductor pin 76 and thus to the conductor 24 of the busbar via the seat 120 and the connecting piece 104.
  • the spring pin 76 prestresses the conductor pin 76 against the conductor 24 and at the same time ensures a sufficient contact pressure between the connecting piece 104, the seat 120 and the ring 126.

Description

Die Erfindung betrifft eine Niedervolt-Stromschiene mit einem einen Längsschlitz aufweisenden Hohlprofil und einem in dem Hohlprofil gehaltenen, durch den Längsschlitz von außen zugänglichen Leiter sowie einem Adapter zur Stromabnahme von dem Leiter.The invention relates to a low-voltage busbar with a hollow profile having a longitudinal slot and a conductor held in the hollow profile and accessible from the outside through the longitudinal slot, as well as an adapter for drawing current from the conductor.

Stromschienen sind vor allem für den Bereich von 220 Volt in zahlreichen Ausführungsformen bekannt. Eine speziell auf den Niederspannungsbereich zugeschnittene Stromschiene wird in dem Gebrauchsmuster G 86 20 925.6 der Anmelderin beschrieben. Die Verwendung von Niederspannung in der Größenordnung von 12 Volt bietet die Möglichkeit, äußerst filigrane Leuchtensysteme zu schaffen, die optisch kaum in Erscheinung treten. Insoweit ist es auch bekannt, Niederspannungsleuchten an zwei parallel im Raum aufgespannten Drähten aufzuhängen und über diese zu betreiben. Dieses System weist jedoch eine geringe Stabilität auf und ist daher nicht in allen Fällen anwendbar.Busbars are primarily known for the range of 220 volts in numerous embodiments. A conductor rail specially tailored to the low-voltage range is described in the utility model G 86 20 925.6 of the applicant. The use of low voltage in the order of 12 volts offers the possibility of creating extremely filigree lighting systems that hardly appear visually. In this respect, it is also known to hang low-voltage lights on two wires spanned in parallel in the room and to operate them. However, this system has a low stability and is therefore not applicable in all cases.

Der Erfindung liegt die Aufgabe zugrunde, eine möglichst schlanke und doch ausreichend stabile Stromschiene als Träger für Niederspannungsleuchten zu schaffen.The invention has for its object to provide a slim and yet sufficiently stable conductor rail as a carrier for low-voltage lights.

Diese Aufgabe wird erfindungsgemäß bei einer Niedervolt-Stromschiene der eingangs genannten Art dadurch gelöst, daß der Adapter zangenförmig ausgebildet ist und die Stromschiene von außen beidseitig des Längsschlitzes umgreift sowie einen Leiterstift aufweist, der durch den Längsschlitz mit dem Leiter in Berührung tritt.This object is achieved in a low-voltage busbar of the type mentioned in that the adapter is formed like pliers and encompasses the busbar from the outside on both sides of the longitudinal slot and has a conductor pin which comes into contact with the conductor through the longitudinal slot.

Der Adapter, der etwa als Sockel für Leuchten oder sonstige Verbraucher dienen kann, ist somit im wesentlichen von außen an der Stromschiene befestigt. Da der Innenraum der Stromschiene nicht für die Befestigung des Adapters benötigt wird, kann der Querschnitt der Stromschiene äußerst klein gehalten werden. Im übrigen muß im Innern der Stromschiene nur ein Leiter vorgesehen sein, da es im Niedervoltbereich nach den einschlägigen Vorschriften zulässig ist, das metallische Gehäuse der Stromschiene als zweiten Leiter einzusetzen.The adapter, which can serve as a base for lights or other consumers, is essentially attached to the outside of the busbar. Because the interior of the power rail is not for attaching the adapter required, the cross section of the busbar can be kept extremely small. For the rest, only one conductor must be provided in the interior of the conductor rail, since it is permissible in the low-voltage range to use the metallic housing of the conductor rail as a second conductor in accordance with the relevant regulations.

Im einzelnen umfaßt der Adapter vorzugsweise zwei gegeneinander schwenkbare Backen, die an ihren Enden nach innen gerichtete Klauen aufweisen und an einem gemeinsamen Schaft gelagert sind. Die Backen mit den Klauen können das Profil der Stromschiene insgesamt umgreifen, oder die Klauen können in längsgerichtete Nuten an den gegenüberliegenden Seiten des Profils eintreten.In particular, the adapter preferably comprises two jaws which can be pivoted relative to one another and which have claws directed inwards at their ends and are mounted on a common shaft. The jaws with the claws can encompass the profile of the busbar as a whole, or the claws can enter longitudinal grooves on the opposite sides of the profile.

Die beiden längsgerichteten Nuten und eine weitere, dem Längsschlitz gegenüberliegende, werden vorzugsweise durch entsprechendes Einziehen des Wandmaterials des Hohlprofils gebildet. Auf diese Weise haben die Nuten die Funktion von Sicken, die dem Hohlprofil trotz geringen Querschnittes eine hohe Steifigkeit verleihen.The two longitudinal grooves and a further, opposite the longitudinal slot, are preferably formed by appropriately drawing in the wall material of the hollow profile. In this way, the grooves have the function of beads which, despite the small cross section, give the hollow profile high rigidity.

Vorzugsweise weist das Hohlprofil einen im wesentlichen elliptischen Querschnitt auf, bei dem sich der Längsschlitz an einer Schmalseite befindet. Auf diese Weise wird bei untenliegendem Schlitz eine relativ hohe Biegesteifigkeit erzielt.The hollow profile preferably has an essentially elliptical cross section in which the longitudinal slot is located on a narrow side. In this way, a relatively high bending stiffness is achieved with the slot underneath.

Der Leiter wird vorzugsweise gehalten in einem insgesamt im Querschnitt U-förmigen Profil aus einem elastischen, nichtleitenden Material, beispielsweise Gummi oder Kunststoff, das mit der geschlossenen Seite voran in den Längsschlitz eingedrückt wird und dessen Schenkel sich in der eingedrückten Stellung an den Rändern des Längsschlitzes abstützen und durch diese leicht zusammengedrückt werden, so daß der Leiter im Innern des U-Profils eingespannt wird.The conductor is preferably held in an overall cross-sectionally U-shaped profile made of an elastic, non-conductive material, for example rubber or plastic, which is pressed with the closed side first into the longitudinal slot and whose leg is in the pressed-in position at the edges of the longitudinal slot Support and be slightly compressed by this, so that the conductor is clamped inside the U-profile.

Weitere Einzelheiten der Erfindung ergeben sich aus der folgenden Beschreibung von Ausführungsbeispielen und den Unteransprüchen.Further details of the invention emerge from the following description of exemplary embodiments and the subclaims.

Im folgenden werden bevorzugte Ausführungsbeispiele der Erfindung anhand der beigefügten Zeichnung näher erläutert.

Fig. 1
zeigt einen Querschnitt durch eine erste Ausführungsform einer erfindungsgemäßen Stromschiene;
Fig. 2
ist ein Querschnitt durch eine weitere Ausführungsform der Stromschiene;
Fig. 3
ist eine teilweise aufgeschnittene Ansicht eines Adapters;
Fig. 4
ist eine Ansicht von links in Figur 3;
Fig. 5
ist eine Teilansicht eines Halters zur Aufhängung der erfindungsgemäßen Stromschiene.
Fig. 6
ist eine teilweise aufgeschnittene Seitenansicht einer Stromschiene mit Adapter gemäß einem anderen Ausführungsbeispiel der Erfindung;
Fig. 7
zeigt einen Schnitt durch die Stromschiene und den Adapter aus Figur 6; und
Fig. 8
ist ein Schnitt durch eine an dem Adapter aus Figuren 6 und 7 angebrachte Drehkupplung.
Preferred exemplary embodiments of the invention are explained in more detail below with reference to the attached drawing.
Fig. 1
shows a cross section through a first embodiment of a busbar according to the invention;
Fig. 2
is a cross section through another embodiment of the busbar;
Fig. 3
is a partially cutaway view of an adapter;
Fig. 4
is a left view in Figure 3;
Fig. 5
is a partial view of a holder for hanging the busbar according to the invention.
Fig. 6
is a partially cut-away side view of a busbar with adapter according to another embodiment of the invention;
Fig. 7
shows a section through the busbar and the adapter of Figure 6; and
Fig. 8
is a section through a rotary coupling attached to the adapter of Figures 6 and 7.

In Figur 1 ist in einem stark vergrößerten Querschnitt eine Stromschiene 10 gezeigt, deren Umriß insgesamt im wesentlichen elliptisch ist. Auf der in Figur 1 untenliegenden Schmalseite der Ellipse, die in der Regel auch in der montierten Stellung der Stromschiene unten liegt, befindet sich ein Längsschlitz 12. Die Stromschiene stellt somit ein einseitig offenes Hohlprofil dar, das aus einem leitenden Werkstoff, insbesondere Metall, besteht.In Figure 1, a busbar 10 is shown in a greatly enlarged cross section, the overall outline of which is substantially elliptical. A longitudinal slot 12 is located on the narrow side of the ellipse at the bottom in FIG. 1, which is generally also at the bottom in the assembled position of the busbar. The busbar thus represents a hollow profile which is open on one side and consists of a conductive material, in particular metal .

Auf rechts und links in Figur 1 liegenden Breitseiten der Ellipse sind Nuten 14,16 vorgesehen, die nicht in die Oberfläche des Hohlprofils eingearbeitet sind, sondern durch bogenförmigen Einzug des Wandmaterials gebildet werden. Eine entsprechende Nut 18 befindet sich auf der dem Längsschlitz 12 gegenüberliegenden oberen Seite des Hohlprofils.Grooves 14, 16 are provided on the broad sides of the ellipse on the right and left in FIG. 1, which are not machined into the surface of the hollow profile, but are formed by the sheet material being drawn in in an arc. A corresponding groove 18 is on the the longitudinal slot 12 opposite the upper side of the hollow profile.

In den Längsschlitz 12 der Stromschiene 10 ist über dessen gesamte Länge ein im Querschnitt im wesentlichen U-förmiges Trägerprofil 20 eingeschoben. Im Innern des U-Profils befindet sich an dessen Grund eine kreisförmige Erweiterung 22, in der ein Leiter 24 mit kreisförmigem Querschnitt liegt. Das Trägerprofil 20 besteht aus einem elastischen, nichtleitenden Material und dient somit zugleich zur Aufnahme und Isolierung des Leiters 24. In der Nähe der Enden der beiden Schenkel des U befinden sich auf deren Außenseiten Nuten 26,28, die eine gewisse Verrastung mit den nicht bezeichneten Rändern des Längsschlitzes 12 der Stromschiene 10 ermöglichen. Das Trägerprofil 20 ist in bezug auf die Breite des Längsschlitzes 12 so bemessen, daß die Schenkel des Trägerprofils in der eingesetzten Stellung leicht elastisch zusammengedrückt werden. Auf diese Weise wird das Trägerprofil sicher gehalten. Zugleich wird der Leiter eingespannt. Das Trägerprofil 20 wird zugleich durch nach innen gerichtete Auswölbungen 30,32 abgestützt, die durch Bildung der Nuten 14,16 auf der Außenseite der Stromschiene 10 entstehen.In the longitudinal slot 12 of the busbar 10 a cross-sectionally U-shaped support profile 20 is inserted over its entire length. In the interior of the U-profile there is a circular extension 22 at the bottom thereof, in which a conductor 24 with a circular cross-section lies. The carrier profile 20 consists of an elastic, non-conductive material and thus also serves to receive and isolate the conductor 24. In the vicinity of the ends of the two legs of the U there are grooves 26, 28 on their outer sides, which engage with the ones not designated Allow edges of the longitudinal slot 12 of the busbar 10. The support profile 20 is dimensioned with respect to the width of the longitudinal slot 12 so that the legs of the support profile are compressed slightly elastically in the inserted position. In this way, the carrier profile is held securely. At the same time, the conductor is clamped. The carrier profile 20 is supported at the same time by inwardly directed bulges 30, 32, which are formed by forming the grooves 14, 16 on the outside of the busbar 10.

Eine Stromschiene 34 gemäß Figur 2 entspricht im wesentlichen der Stromschiene 10 gemäß Figur 1, ist jedoch in Richtung der Hauptachse der Ellipse langgestreckt ausgebildet. Anstelle der auf den Breitseiten vorgesehenen Nuten 14,16 gemäß Figur 1 sind in Figur 2 verhältnismäßig breite Rinnen 36,38 vorgesehen. Die Rinnen 36,38 unterscheiden sich in ihrer Breite von den Nuten 14,16 im selben Maße wie die Stromschienen gemäß Figur 1 und 2 in der Hauptabmessung ihres Querschnitts. Die Profile der beiden Stromschienen 10,34 unterscheiden sich somit nur dadurch, daß bei dem Profil gemäß Figur 2 ebene Wandabschnitte auf beiden Seiten in der Mitte eingefügt sind, während die oberen und unteren Endbereiche mit denjenigen des Profils gemäß Figur 1 übereinstimmen. Auf den Zweck dieser geometrischen Verhältnisse soll später eingegangen werden.A busbar 34 according to FIG. 2 essentially corresponds to the busbar 10 according to FIG. 1, but is elongated in the direction of the main axis of the ellipse. Instead of the grooves 14, 16 provided on the broad sides according to FIG. 1, relatively wide grooves 36, 38 are provided in FIG. The grooves 36, 38 differ in their width from the grooves 14, 16 to the same extent as the busbars according to FIGS. 1 and 2 in the main dimension of their cross section. The profiles of the two busbars 10, 34 thus differ only in that, in the profile according to FIG. 2, flat wall sections are inserted in the middle on both sides, while the upper and lower end regions match those of the profile according to FIG. The purpose of these geometrical relationships will be discussed later.

Der bei dem Hohlprofil gemäß Figur 2 zusätzlich gewonnene Innenraum kann für die Verlegung zusätzlicher Leitungen 40 verwendet werden. Dabei kann es sich beispielsweise um Primärleiter handeln, die zur Versorgung zusätzlicher Transformatoren innerhalb des Systems dienen.The interior space additionally obtained in the hollow profile according to FIG. 2 can be used for the laying of additional lines 40. For example, these can be primary conductors that are used to supply additional transformers within the system.

Figur 3 und 4 zeigen ein Anschlußstück oder einen Adapter 42, der den Anschluß einer Leuchte oder eines anderen Verbrauchers ermöglicht, bei im wesentlichen gleichen Aufbau, jedoch auch zur Stromzufuhr oder als Träger zum Aufhängen der Stromschiene dienen kann. Der Adapter umfaßt einen zylindrischen Schaft 44, an dem zwei zangenförmig angeordnete Backen 46,48 gegeneinander schwenkbar in einer gemeinsamen Achse 49 gelagert sind. An den Enden der Backen 46,48 befinden sich nach innen vorspringende Klauen 50,52. Die in Figur 4 gezeigte Stellung der Backen ist deren innere Endstellung. Von dieser Endstellung aus können die Backen leicht gespreizt werden. Der Schaft 44 weist in seinem unteren Endbereich ein nicht bezeichnetes Außengewinde auf, in das eine den Schaft umgebende Schraubhülse 54 eingreift. Ein Ring 56 umgibt den Schaft an seinem unteren Ende.Figures 3 and 4 show a connector or an adapter 42, which allows the connection of a lamp or other consumer, with essentially the same structure, but can also be used for power supply or as a carrier for hanging the busbar. The adapter comprises a cylindrical shaft 44, on which two jaws 46, 48 arranged in the form of pliers are pivotally mounted in a common axis 49. At the ends of the jaws 46, 48 there are inwardly projecting claws 50, 52. The position of the jaws shown in Figure 4 is their inner end position. From this end position, the jaws can be spread slightly. In its lower end region, the shaft 44 has an external thread, not designated, into which a screw sleeve 54 surrounding the shaft engages. A ring 56 surrounds the shaft at its lower end.

Aus Figur 4 geht hervor, daß die mit 58 und 60 bezeichneten Rückseiten der beiden Backen 46,48 in der in Figur 4 gezeigten inneren Endstellung der Backen in einer Ebene liegen. Die Schraubhülse 54 ist in Figur 3 und 4 jeweils auf der linken Seite in einer nach oben geschraubten und auf der rechten Seite in einer nach unten geschraubten Stellung gezeigt. In der nach unten geschraubten Stellung drückt die Schraubhülse 54 über den Ring 56 gegen die Rückseiten 58,60 der Backen 46,48, so daß die Backen nicht spreizbar sind.It can be seen from FIG. 4 that the rear sides, designated 58 and 60, of the two jaws 46, 48 lie in one plane in the inner end position of the jaws shown in FIG. The screw sleeve 54 is shown in FIGS. 3 and 4 in each case on the left side in an upward screwed position and on the right side in a downward screwed position. In the screwed down position, the screw sleeve 54 presses against the rear sides 58, 60 of the jaws 46, 48 via the ring 56, so that the jaws cannot be expanded.

Im Innern der Backen 46,48 liegt gemäß Figur 4 eine bogenförmige Blattfeder 62, die die Backen leicht in die innere Endstellung vorspannt.According to FIG. 4, an arcuate leaf spring 62 is located in the interior of the jaws 46, 48, which biases the jaws slightly into the inner end position.

Im Innern des Schaftes 44 befindet sich eine koaxiale Bohrung 64, durch die ein nicht gezeigtes Kabel geführt wird. Die Bohrung 64 erweitert sich an ihrem unteren Ende zu einer koaxialen, zylindirschen Kammer 66, in der eine Hülse 68 aus isolierendem Material liegt. Eine weitere, mit einem Flansch 70 versehene Hülse 72 schließt sich nach unten in Figur 3 an die Hülse 68 an. Die Hülse 72 weist eine konzentrische Bohrung 74 auf, in der ein Leiterstift 76 senkrecht verschiebbar geführt ist. Der Leiterstift 76 tritt nach unten in Figur 3 und 4 in den Zwischenraum zwischen den Backen 46,48 aus. Er weist am oberen Ende einen Flansch 78 auf, der sich in senkrechter Richtung innerhalb der Hülse 68 bewegt, jedoch einen größeren Durchmesser als die Bohrung 74 der unteren Hülse 72 aufweist und somit einen unteren Endanschlag für den Leiterstift 76 bildet. Zwischen dem Flansch 78 und einem nach innen vorspringenden Rand 80 am oberen Ende der oberen Hülse 68 liegt eine Druckfeder 82, die den Leiterstift nach unten vorspannt.In the interior of the shaft 44 there is a coaxial bore 64 through which a cable, not shown, is passed. The bore 64 widens at its lower end to a coaxial, cylindrical chamber 66, in which a sleeve 68 made of insulating material is located. A further sleeve 72 provided with a flange 70 adjoins the sleeve 68 at the bottom in FIG. 3. The sleeve 72 has a concentric bore 74 in which a conductor pin 76 is guided to be vertically displaceable. The conductor pin 76 emerges downwards in FIGS. 3 and 4 into the space between the jaws 46, 48. It has a flange 78 at the upper end, which moves in the vertical direction within the sleeve 68, but has a larger diameter than the bore 74 of the lower sleeve 72 and thus forms a lower end stop for the conductor pin 76. Between the flange 78 and an inwardly projecting edge 80 at the upper end of the upper sleeve 68 there is a compression spring 82 which prestresses the conductor pin downwards.

Wie aus Figur 3 im übrigen hervorgeht, ist die Achse 49 im Bereich der unteren Hülse 72 geteilt.As can also be seen from FIG. 3, the axis 49 is divided in the region of the lower sleeve 72.

Der Adapter 42 kann von außen auf die Stromschiene 10,34 aufgeschoben und auf dieser verrastet werden. Zu diesem Zweck wird er in der gegenüber Figur 4 umgekehrten Stellung von unten an die Stromschiene herangeführt. Dabei laufen die Klauen 50,52 auf die seitlichen Flanken der Stromschienen 10,34 beiderseits des Längsschlitzes 12 auf, so daß die Backen 46,48 gespreizt werden, bis die Klauen 50,52 in die Nuten 14,16 bzw. die Rinnen 36,38 der Stromschiene einfallen. Dies führt zu einem hörbaren Klick-Geräusch und zu einer zumindest vorläufigen Festlegung des Adapters an der Stromschiene. Während der geschilderten Vorgänge ist der Leiterstift 76 federnd mit dem Leiter 24 in Berührung getreten. Wenn die Schraubhülse 54 angezogen wird, ist eine Spreizung der Backen 46,48 nicht mehr möglich. Zum Lösen des Adapters von der Stromschiene wird zunächst die Schraubhülse 54 zurückgedreht, und sodann wird der Adapter quer zur Stromschiene gekippt. Dabei tritt eine der Klauen 50,52 aus der zugehörigen Nut 14,16 bzw. Rinne 36,38 aus.The adapter 42 can be pushed onto the busbar 10, 34 from the outside and locked thereon. For this purpose, it is brought up to the conductor rail from below in the position opposite to that in FIG. The claws 50, 52 run onto the side flanks of the busbars 10, 34 on both sides of the longitudinal slot 12, so that the jaws 46, 48 are spread until the claws 50, 52 into the grooves 14, 16 or the grooves 36, 38 of the conductor rail. This leads to an audible Clicking noise and at least temporarily fixing the adapter to the track. During the processes described, the conductor pin 76 has resiliently come into contact with the conductor 24. When the screw sleeve 54 is tightened, spreading of the jaws 46, 48 is no longer possible. To release the adapter from the busbar, the screw sleeve 54 is first turned back, and then the adapter is tilted transversely to the busbar. One of the claws 50, 52 emerges from the associated groove 14, 16 or groove 36, 38.

Figur 5 zeigt einen Halter 84 für Stromschienen 10,34, der vollständig mit dem zuvor beschriebenen Adapter 42 übereinstimmt, ausgenommen, daß es an einem Leiterstift 76 und den unmittelbar zugehörigen Teilen fehlt. Der Halter kann sowohl von oben als auch von unten, bezogen auf Figur 1 und 2, auf eine Stromschiene aufgeschoben und auf dieser in der beschriebenen Weise verklemmt werden. Er kann also zum Aufhängen der Stromschiene an einer Decke oder auch zur Montage der Stromschiene auf einer Unterlage verwendet werden.FIG. 5 shows a holder 84 for busbars 10, 34, which completely matches the adapter 42 described above, except that there is no conductor pin 76 and the directly associated parts. The holder can be slid onto a busbar from above as well as from below, based on FIGS. 1 and 2, and clamped thereon in the manner described. It can therefore be used to hang the conductor rail on a ceiling or to mount the conductor rail on a surface.

Der Adapter 42 gemäß Figur 3 und 4 kann nicht nur zur Versorgung von an der Stromschiene befestigten Verbrauchern, sondern auch zur Einspeisung von Strom in die Schiene verwendet werden. Dabei kann die Verbindung zu dem Leiter 24 in der bereits geschilderten Weise hergestellt werden. Auch ein Anschluß an die als zweiter Pohl dienende Schiene ist möglich, sofern der Adapter von oben in Figur 1 und 2 auf die Schiene aufgesetzt wird. In diesem Falle tritt der Leiterstift 16 in die obere Nut 18 ein.The adapter 42 according to FIGS. 3 and 4 can be used not only to supply consumers attached to the busbar, but also to feed current into the busbar. The connection to the conductor 24 can be established in the manner already described. A connection to the rail serving as a second pole is also possible, provided the adapter is placed on the rail from above in FIGS. 1 and 2. In this case, the conductor pin 16 enters the upper groove 18.

Bei den oben beschriebenen Ausführungsbeispielen erfolgt die elektrische Kontaktierung des leitenden Stromschienengehäuses unmittelbar über die aus leitendem Material bestehenden Backen 46,48 und den Schaft 44 des Adapters. Wenn die Stromschiene 10 lackiert ist und somit eine elektrisch isolierende Oberfläche aufweist, so wird eine modifizierte Ausführungsform des Adapters 42 verwendet, die nachfolgend anhand der Figuren 6 und 7 erläutert werden soll.In the exemplary embodiments described above, the electrical contacting of the conductive busbar housing takes place directly via the jaws 46, 48 made of conductive material and the shaft 44 of the adapter. If the busbar 10 is painted and thus has an electrically insulating surface, a modified embodiment of the adapter 42 is used, which is to be explained below with reference to FIGS. 6 and 7.

Bei dieser Ausführungsform bestehen die Backen 46,48 aus Kunststoff, und die elektrische Kontaktierung erfolgt mit Hilfe federnder Kontaktzungen 86, die gegen die nicht lackierten, nach außen schräg auseinanderlaufenden Ränder des Längsschlitzes 12 der Stromschiene andrücken. Die Kontaktzungen 86 sind jeweils an ihrem inneren Ende nach unten abgewinkelt und zwischen den Lagerabschnitten der Backen 46,48 derart auf der Achse 49 gehalten, daß sie an einem Kopfabschnitt 88 des Schaftes 44 anliegen. Der Schaft 44 ist an seinem unteren Ende mit einem ebenfalls aus leitendem Material bestehenden Auslegerohr 90 verschraubt.In this embodiment, the jaws 46, 48 are made of plastic, and the electrical contact is made with the aid of resilient contact tongues 86, which press against the unpainted, outwardly sloping edges of the longitudinal slot 12 of the busbar. The contact tongues 86 are each angled downward at their inner end and held on the axis 49 between the bearing sections of the jaws 46, 48 in such a way that they abut a head section 88 of the shaft 44. The shaft 44 is screwed at its lower end to a cantilever tube 90 which is also made of conductive material.

Anstelle der Schraubhülse 54 ist bei diesem Ausführungsbeispiel eine mit einem Griff 92 versehene Verriegelungshülse 94 vorgesehen, die bajonettartig an dem Schaft 44 arretierbar ist. Die Verriegelungshülse 94 weist einen ovalen Querschnitt auf und ist an ihrem inneren Umfang mit auf der größeren Achse des Ovals liegenden Ansätzen 96 versehen, die zusammen mit auf einem Teil des Umfangs des Schaftes 44 ausgebildeten Vorsprüngen 98 die bajonettartige Verriegelung bewirken.Instead of the screw sleeve 54, a locking sleeve 94 provided with a handle 92 is provided in this embodiment, which can be locked in a bayonet-like manner on the shaft 44. The locking sleeve 94 has an oval cross section and is provided on its inner circumference with lugs 96 lying on the larger axis of the oval, which together with projections 98 formed on part of the circumference of the shaft 44 bring about the bayonet-like locking.

Der Leiterstift 76 ist verschiebbar in einer isolierenden Hülse 100 geführt, die auf ihrem äußeren Umfang mit einer umlaufenden Nut 102 versehen ist und durch die Enden der beiden Abschnitte der Achse 49 gegen axiale Verschiebung gesichert wird. Der Leiterstift 76 ist an seinem unteren Ende mit einem leitenden Verbindungsstück 104, beispielsweise einem Kupferstab verlötert, der in seinem Mittelabschnitt von einer Isolierung 106 umgeben ist und koaxial durch den Schaft 44 und das Auslegerrohr 90 zu einer Drehkupplung 108 verläuft, die gemäß Figur 8 am unteren Ende des Auslegerrohres angebracht ist.The conductor pin 76 is slidably guided in an insulating sleeve 100 which on its outer circumference with a circumferential groove 102 is provided and is secured against axial displacement by the ends of the two sections of the axis 49. The conductor pin 76 is soldered at its lower end to a conductive connecting piece 104, for example a copper rod, which is surrounded in its central portion by insulation 106 and extends coaxially through the shaft 44 and the extension tube 90 to a rotary coupling 108, which according to FIG lower end of the boom tube is attached.

Die Drehkupplung 108 weist ein Gehäuse 110 aus Kunststoff auf, an dem ein Halter 112 für eine Leuchte oder dergleichen angebracht oder ausgebildet ist. Das Gehäuse 110 ist auf einem Bund 114 einer mit dem Auslegerrohr 90 verschraubten Buchse 116 drehbar und nimmt einen mit einem Innenkegel 118 versehenen Sitz 120 aus leitendem Material auf, der durch eine Feder 122 gegen das abisolierte untere Ende des Verbindungsstückes 104 vorgespannt ist. Der Sitz 120 ist durch eine topfförmige Führungsbuchse 124 elektrisch gegenüber der leitenden Buchse 116 isoliert und über einen leitenden Ring 126 mit einem Anschlußkabel 128 der nicht gezeigten Leuchte verbunden. Ein weiteres Anschlußkabel 130 der Leuchte ist an eine Zunge 132 einer Kontaktplatte 134 angeschlossen, die mit dem Umfang der Buchse 116 in Schleifkontakt steht. Durch die Drehkupplung 108 wird so über die Kontaktplatte 134, die Buchse 116 und das Auslegerrohr 90 eine leitende Verbindung zu dem Stromschienengehäuse und über den Sitz 120 und das Verbindungsstück 104 eine leitende Verbindung zu dem Leiterstift 76 und somit zu dem Leiter 24 der Stromschiene hergestellt. Durch die Feder 122 wird der Leiterstift 76 gegen den Leiter 24 vorgespannt und zugleich ein ausreichender Kontaktdruck zwischen dem Verbindungsstück 104, dem Sitz 120 und dem Ring 126 gewährleistet.The rotary coupling 108 has a housing 110 made of plastic, on which a holder 112 for a lamp or the like is attached or formed. The housing 110 is rotatable on a collar 114 of a bush 116 screwed to the extension tube 90 and accommodates a seat 120 provided with an inner cone 118 made of conductive material, which is biased by a spring 122 against the stripped lower end of the connecting piece 104. The seat 120 is electrically insulated from the conductive socket 116 by a cup-shaped guide bush 124 and is connected via a conductive ring 126 to a connecting cable 128 of the lamp (not shown). Another connecting cable 130 of the lamp is connected to a tongue 132 of a contact plate 134 which is in sliding contact with the circumference of the socket 116. The rotary coupling 108 thus creates a conductive connection to the busbar housing via the contact plate 134, the bushing 116 and the extension tube 90 and a conductive connection to the conductor pin 76 and thus to the conductor 24 of the busbar via the seat 120 and the connecting piece 104. The spring pin 76 prestresses the conductor pin 76 against the conductor 24 and at the same time ensures a sufficient contact pressure between the connecting piece 104, the seat 120 and the ring 126.

Claims (16)

  1. Low voltage bus bar with a hollow profiled section having a longitudinal slit and with a conductor which is retained in the hollow profiled section and is accessible from the outside through the longitudinal slit, as well as an adapter for collecting the current from the conductor, characterised in that the adaptor (42) is formed with tong arms and grips the bus bar (10, 34) from the outside on either side of the longitudinal slit (12) and also has a conductor pin (76) which comes into contact with the conductor (24) through the longitudinal slit.
  2. Bus bar according to Claim 1, characterised in that the jaws (46, 48) of the adaptor (42) in the shape of tong arms have inwardly projecting claws (50, 52) on their inner ends.
  3. Bus bar according to Claim 2, characterised in that the hollow profiled section has longitudinally directed grooves (14, 16) on either side of the longitudinal slit (12).
  4. Bus bar according to one of the preceding claims, characterised in that the hollow profiled section has a longitudinally directed groove (18) on the side opposite the longitudinal slit (12).
  5. Bus bar according to one of Claims 3 or 4, characterised in that the grooves (14, 16, 18) are formed in the wall material of the hollow profiled section by drawing.
  6. Bus bar according to one of Claims 3 to 5, characterised in that the cross-section of the hollow profiled section is substantially elliptical, in that the longitudinal slit (12) is disposed on one of the narrow sides of the ellipse and in that the grooves (14, 16) are located in the middle of the long sides.
  7. Bus bar according to one of the preceding claims, characterised in that the conductor (24) is held in a carrier profile (20) that is substantially U-shaped in cross-section and is of elastic, non-conductive material, the legs of which are held, under pretensioning, by the edges of the longitudinal slit (12) of the hollow profiled section.
  8. Bus bar according to one of the preceding claims, characterised in that the adaptor (42) has a shaft (44) accommodating the jaws in a pivotable manner, on which shaft there is located a collet (54), which, in its end position on the side of the jaws, abuts the rear sides (58, 60) of the jaws.
  9. Bus bar according to one of Claims 1 to 7, characterised in that the adaptor (42) has a shaft (44) accommodating the jaws (46, 48) in a pivotable manner, on which shaft a lock casing (94) may be locked in one position in a bayonet-like manner, in that it abuts in a locking manner on the rear sides (58, 60) of the jaws.
  10. Bus bar according to one of the preceding claims, characterised in that the jaws (46, 48) are resiliently pretensioned in their end position.
  11. Bus bar according to one of Claims 8 to 10, characterised in that the conductor pin (76) is resiliently supported inside the shaft (44) and is pretensioned in an end position between the jaws.
  12. Bus bar according to one of Claims 1 to 10, characterised in that the adaptor (42) is connected to one end of a projecting tube (90), the other end of which is connected to a rotational coupling (108), and in that the conductor pin (76) is disposed on a conductive connection piece (104) which extends through the projecting tube (90), which connection piece is supported in the rotational coupling (108) on a seating (120) which is pretensioned elastically in the direction of the adaptor (42) and is of electrically conductive material.
  13. Bus bar according to Claim 12, characterised in that the rotational coupling (108) has a casing (110) supporting the electric consumer, which casing is rotatably supported on a socket (116) which is connected to the projecting tube (90) and is of conductive material; in that the socket (116) accommodates the guide socket (124) of electrically insulating material, in which the mounting (120) is displaceably guided; and in that a connecting wire (128) of the electric consumer is connected to the mounting (120), whilst a further connection wire (130) is connected to a contact plate (134), which is in sliding contact with the periphery of the conductive socket (116).
  14. Bus bar according to one of Claims 1 to 11, characterised in that a holder (48) is provided for suspending and mounting the bus bar (10; 34) the form of which corresponds to the adaptor (42).
  15. Bus bar according to one of the preceding claims, characterised in that the longitudinal slit (12) has a cross-section which enlarges towards the outside; and in that the adaptor (42) is provided with at least one contact piece (86) which abuts the edges of the longitudinal slit (12).
  16. Bus bar according to one of the preceding claims, characterised in that the conductor pin (76) is guided axially in an insulating casing (100); and in that the jaws (46, 48) of the adaptor (42), and, possibly, two resilient contact tongues forming the contact pieces (86), are held on two sections (49) of the shaft which are disposed either side of the casing (100), which sections engage at their inner ends in a groove (102) of the casing (100) and lock the casing in an axial direction.
EP19880108058 1987-05-20 1988-05-19 Low voltage bus bar Expired - Lifetime EP0291989B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8707282U 1987-05-20
DE8707282U DE8707282U1 (en) 1987-05-20 1987-05-20

Publications (2)

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EP0291989A1 EP0291989A1 (en) 1988-11-23
EP0291989B1 true EP0291989B1 (en) 1992-11-04

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DE (1) DE8707282U1 (en)

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DE3735191A1 (en) * 1987-10-17 1989-05-03 Asea Brown Boveri Busbar
GB2229585B (en) * 1989-03-23 1993-07-07 Rotaflex Ltd Electric coupling
US5067906A (en) * 1988-06-20 1991-11-26 Gte Rotaflex Limited Electric current distribution apparatus
AU645667B2 (en) * 1988-06-20 1994-01-20 Concord Lighting Limited Electric current distribution apparatus
DE3834569A1 (en) * 1988-10-11 1990-04-12 Achim Jungbluth Low-voltage illumination device
DE3938186A1 (en) * 1988-11-14 1990-05-17 Dietmar Gaertner LV tubular supply conductors esp. for lights - has conductor inside conductive hollow tube and insulated against it by pipes
DE8815976U1 (en) * 1988-11-14 1989-02-16 Gaertner, Dietmar, 3180 Wolfsburg, De
FR2685947A1 (en) * 1992-01-06 1993-07-09 Applic Tech Decoratives Ec Support and supply device for very-low voltage lighting
DE9402280U1 (en) * 1994-02-11 1994-04-14 Breuer Thomas Shower partition
DE19605982C1 (en) * 1996-02-17 1997-10-23 Bruck Gmbh & Co Kg Track system
DE29603790U1 (en) * 1996-03-01 1997-07-03 Keferstein Ralf Connection element for a low-voltage lamp and low-voltage lamp
CN108386805B (en) * 2018-02-07 2020-06-09 江苏辰彩光电科技有限公司 Garden lamp convenient for height adjustment and maintenance for residential area
IT201800002907A1 (en) * 2018-02-21 2019-08-21 Ferrari Spa POWER INTERFACE CONTROL DEVICE OF A VEHICLE PROPULSION BATTERY

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DE8704849U1 (en) * 1987-04-01 1987-06-11 Brillantleuchten Ag, 2742 Gnarrenburg, De

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EP0291989A1 (en) 1988-11-23
DE8707282U1 (en) 1987-07-09

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