EP1353415A1 - End piece for a busbar in a busbar system - Google Patents

Abstract

The bus bar has a number of uninsulated conducting wires in parallel grooves in an insulation carrier. The end piece (20) can be fitted onto the bus bar in the longitudinal direction for attachment to the bus bar and has an adjustment arrangement that converts the fitting motion into a displacement motion for at least one of two adjacent conducting wires so that the end regions of the wires are bent out of the groove in the insulation carrier.

Description

The present invention relates to an end piece for a busbar of a Busbar system, in which consumer at any point, such as Lights, spotlights and the like. Can be used.

Busbar systems of this type are often used for lighting purposes, because they are versatile and an individual and flexible arrangement of Allow lights. Such known from DE 100 25 647 A1 Busbar system will first be explained with reference to FIG. 6.

The known busbar system initially consists of a metal or sheet metal formed U-shaped, elongate support member 1, hereinafter referred to as a busbar is designated, which with its center leg 2 by not shown Attachment to a support, such as a ceiling or a Room wall is fastened. The cover of the downwardly open busbar. 1 done by a latchable with this cover rail. 4

For the power supply or transmission of control information or control commands for the lights a plurality of conductor wires 6 ₁ to 6 ₅ and 7 ₁ to 7 _{6 are} provided, which extend on the inner sides of the two side walls _{3 a} and ₃ b in the longitudinal direction of the bus bar 1. The holder of the conductor wires 6 ₁ to 6 ₅ and 7 ₁ to 7 ₆ takes place with the help of inserted into the side regions of the busbar 1 Isolierstoffträgern 8. The connected via connecting webs 10 Isolierstoffträger 8 each have corresponding grooves 9, in which the non-insulated conductor wires 6 ₁ to 6 ₅ and 7 ₁ to 7 _{6 of} the busbar system are inserted. The shape of the grooves 9 is chosen such that a contact protection is ensured. This means that the grooves 9 are dimensioned such that an inadvertent contact of the conductor wires 6 ₁ to 6 ₅ and 7 ₁ to 7 _{6 is} excluded. The conductor wires 6 ₁ to 6 ₅ and 7 ₁ to 7 ₆ are contacted only by a to be introduced into the busbar 1 Drehabgriff, 8 in the respective grooves 9 of the Isolierstoffträger introduced contacts and supplies the lamp with power and control information about this. The entire busbar system is then composed of a plurality of such individual busbars.

In the conductor rail system known from DE 100 25 647 A1, a plurality of insulating material carriers 8 are combined to form a so-called current-conducting profile for holding the conductor wires 6 ₁ to 6 ₅ and 7 ₁ to 7 ₆ . Due to this modular assembly and a special configuration of the end regions of the insulating material carrier 8 equalization points are formed at intervals of about 30cm to 40cm, which allow a "thermal ventilation" of the Stromleitprofils. This is important because the existing plastic insulating material 8 in heat much more than the embedded therein conductor wires 6 ₁ to 6 ₅ and 7 ₁ to 7 ₆ expand or contract in the cold accordingly. Due to the modular joining of the Isolierstoffträger 8 ensures that even with a contraction or expansion of the plastic parts through grooves for receiving the conductor wires 6 ₁ to 6 ₅ and 7 ₁ to 7 _{6 are} formed and accordingly at any time a sufficient contact protection is given. Thus, it is ultimately possible that the lights can be used anywhere in the busbar 1. The mentioned special embodiment of the end regions of the insulating material carrier 8 can be taken from DE 100 25 647 A1.

Usually busbars of the type described in predetermined lengths For example, 2 m, 2.50 m, etc. distributed. Here are the two ends of the Busbars provided special mounting means, which are made of plastic existing Isolierstoffträger for the conductor wires at the ends of the busbar fix. In the system described above, this is done for example by a Inward deflection of the busbar. These special retaining means ensure that the existing plastic insulating material carrier only for extend inner region of the busbar out or from this central area can withdraw.

Often there is a need to saw off a busbar in order in this way To get rail of individual length. This can be the case at the end of System arranged busbars be the case, since these are specific to the spatial Circumstances must be adjusted. When sawing or cutting to length Busbar, however, may be the case that the end of the busbar is removed with the support means for the Isolierstoffträger. This then has to As a consequence, the insulating material carriers in the busbar are not only now extend inwards but also beyond the end of the busbar or yourself can withdraw to the inner region of the busbar. Dangerous is there in particular, the retraction of the Isolierstoffträger, because in this case the Protruding wire ends of the non-insulated conductor wires. For these conductor wires are certain minimum clearances and creepage distances prescribed, which only then are met when the conductor wires within the grooves of the insulating material are located. If, however, the conductor wires projecting blank, the Protective provisions are no longer met and there is a risk of unintentional Touching the wires. Basically, this case can occur whenever the end portions of a busbar no anchorages for the Isolierstoffträger for the conductor wires are present.

The present invention is accordingly based on the object, a solution despite the absence of anchorages for the Isolierstoffträger at the end of a busbar regulations regarding the air and Leakage paths are met.

This object is achieved by an end piece for a bus bar, which features of claim 1, solved. The tail according to the invention is first for Attachment to the busbar in the longitudinal direction of these pushed and further comprises adjusting means which the Aufschiebbewegung in a Adjusting movement for at least one of two juxtaposed Conductor wires implemented, such that the end portion of this conductor wire from its groove is bent out in the Isolierstoffträger. When pushing the tail on the Busbar is thus at least one conductor wire over the other Lead wires offset, so due to this change in position, the required air and Creepage distances are met.

Further developments of the invention are the subject of the dependent claims.

So a particularly good protective effect is achieved when the tail in turn a receiving chamber enclosed by insulating material into which the end of the curved conductor wire is introduced. The wire end is then from his original groove in the insulating material in a new and opposite the Environment isolated area offset. The adjustment can, for example, a Include thorn, which has a run-on slope at its front end and the Slide the end piece onto the busbar into the conductor wire to be bent associated groove of the insulating carrier engages. This spike also prevents that Wire end leaves the receiving chamber of the tail again. Furthermore, the Adjusting means also a projecting from the front end of the receiving chamber Floor area include, through which the auszubiegende wire end when sliding the End piece on the busbar is automatically inserted into the receiving chamber.

A particularly good protective effect is achieved when the conductor wires next the bent conductor wire in its originally provided grooves of the Isolierstoffträgers remain. An advantageous development of the invention Accordingly, the tail is that it also has retention means having the end portions of the conductor wire to be bent out next to arranged conductor wires in the designated grooves of Isolierstoffträgers hold. These restraint means may be, for example, comb-like ribs act, which have run-on slopes at their front ends and the Sliding the tail on the busbar in the respective conductor wires engage associated grooves of Isolierstoffträgers. It is now possible every other conductor wire into a receiving chamber provided on the end piece so that the conductor wires of the busbar system alternately in the original Isolierstoffträger the busbar and the tail are kept. Often, however, it is sufficient to meet the above requirements, only those conductor wires provided in the end piece receiving chambers introduce at which a particularly high voltage is applied. Is it the case of Busbar around a system where the conductor wires on the two sides of a U-shaped Busbar run, so are the adjustment and retention means preferably on the side walls of a profile body provided on the end piece arranged of an insulating material, which when assembling the Busbar inserted with the tail in the end of the busbar becomes.

Another advantageous development of the end piece according to the invention is that this at its inserted into the busbar end fixing means having an anchoring arranged in the busbar Cause Isolierstoffträger. These fixatives may in particular act a V-shaped, elastically ausbiegbares sheet metal part, at its lateral ends having claw-like projections. This sheet metal part can be attached to a protruding Metal tongue by means of a screw be fastened such that the sheet metal part by a Tighten the screw is spread. The projections then dig into the out Plastic existing Isolierstoffträger, whereby these are fixed laterally.

At the back of the tail may also be provided a cap, which has an opening for introducing cables into the busbar. In particular, the opening may be through one at the top of the end cap arranged U-shaped collar formed in a corresponding Recess engages the end piece. This gives the possibility of the Busbar to supply external cables, either for power supply or for transmitting control commands or control information from a central Control unit can be used.

Fig. 1 bis 3

verschiedene Ansichten des erfindungsgemäßen Endstücks;

Fig. 4

das mit zusätzliche Fixierungsmitteln versehene Endstück;

Fig. 5

das auf das Ende einer Stromschiene aufgesetzte Endstück;

Fig. 6

einen Schnitt I-I durch Fig. 5 im Bereich vor dem Endstück; und

Fig. 7

einen Schnitt II-II durch Fig. 5 im Bereich des erfindungsgemäßen Endstücks.

The invention will be explained in more detail with reference to the drawings. Show it:

Fig. 1 to 3

different views of the end piece according to the invention;

Fig. 4

the provided with additional fixing means tail;

Fig. 5

the attached to the end of a busbar tail;

Fig. 6

a section II through Figure 5 in the region in front of the tail. and

Fig. 7

a section II-II through Fig. 5 in the region of the end piece according to the invention.

The end piece 20 according to the invention shown in FIGS. 1-3 initially has one U-shaped housing 21, the contour of the busbar on which the end piece 20th is to be set up, corresponds. At the front end of the housing 21 is a something extended receiving area 22, which extends to the outer walls of the busbar is postponed and receives this. At the top of the housing 21 is located an open towards the rear U-shaped recess 23, which - as explained later allows - the insertion of external cables into the busbar.

Towards the front, an existing of an insulating material extends Profile body 24, the 20 when placing the tail on the busbar in the Interior of the busbar is introduced. On the two side walls 25 and 26 of the profile body 24 are comb-like ribs 31 and 33 to 35 as well Receiving chambers 32 are provided which the sheathing according to the invention certain conductor wires of the busbar system when pushing the end piece 21st or cause the retention of the other conductor wires. Both the side walls 25 and 26 itself as well as the ribs 31 and 33 to 35 are light at its front end bevelled to facilitate the insertion of the profile body 24 in the busbar.

The receiving chamber 32 has at its front end a protruding Floor portion 36, which is the insertion of the conductor wire to be bent in the Receiving chamber 32 facilitates. Also, the side walls of this scoop-like trained bottom portion 36 are chamfered. In the rear area of the profile body 24, the receiving chamber 32 associated with a mandrel 37, which also has a Has a run-up slope. As will be explained later, this mandrel 37 appears at Placing the end piece 20 on the busbar in the corresponding groove of the Isolierstoffträgers and thereby causes the desired bending this Conductor wire and insertion into the receiving chamber 32. The mandrel 37 and the The protruding bottom region 36 thus form the adjusting means for the invention Bending out the conductor wire. In addition, the mandrel 37 also prevents that in the Recording chamber 32 inserted conductor wire later unintentionally from this again emerges.

At the front end of the profile body 24 are also pins 29 and 30, whose Function will be explained later. The top 27 of the profile body 24 has at one Page a slight increase 28 on. This increase 28 ensures a Protection against twisting, which is a reversed insertion of the Profilköpers 24 in the Busbar prevented. The functionality of this anti-rotation will be later explained in more detail.

In Fig. 4, the end piece 20 according to the invention has additional fixing means which cause anchoring of the insulating material in the end region of the busbar. These fixing means consist essentially of a V-shaped sheet metal part 53, having claw-like projections 54 at its two ends. The middle thigh the sheet metal part 53 is connected via a screw 52 at a downwardly projecting Protrusion 51 a metal tongue 50 attached and between the profile body 24 protruding pins 29 and 30 are arranged. The metal tongue 50 is at the Attached to the top of the housing 21 of the end piece 20 and extends in the direction of Profile body 24. The metal tongue 50 is 20 when pushing the end piece also inserted in the busbar, thereby improving the connection between the bus bar and the end piece 20. At the front end portion of the metal tongue 50th there are marks in the form of notches 55, whose function later is explained.

A fixation of the insulating material of the busbar by the projections 54 of the Sheet metal part 53 is made by the screw 52 after placing the End piece 20 is tightened on the power rail. By tightening the screw 52, the screw pressure in cooperation with the pins 29 and 30 on the Sheet metal part 53 increases, so that this spreads and the projections 54 in the on the Sidewalls of the busbar located and made of plastic Clamp insulating material carrier. This clawing becomes a connection between achieved the end piece 20 and the insulating material, so that a heat-related move the insulating material is largely avoided.

Fig. 5 shows the end piece 20 in the mounted state on the busbar 1. Den Termination of the end piece 20 forms a closure cap 56 which is at its upper portion a U-shaped collar 57 has. This collar 57 engages in the previously described U-shaped recess 23 and forms an opening in the end of the End piece 20. Through this opening, external lines in the end of Busbar 1 are introduced.

The mode of operation of the end piece according to the invention will now be explained with reference to FIGS. 6 and 7. 6 already illustrates the course of the conductor wires 6 ₁ to 6 ₅ and 7 ₁ to 7 ₆ in the Isolierstoffträgern 8 of the busbar 1. This corresponds to the arrangement in an area in front of the end piece according to the invention, ie the section II in FIG 5.

FIG. 7, on the other hand, shows the section II-II of FIG. 5 or the course of the conductor wires 6 ₁ to 6 ₅ and 7 ₁ to 7 ₆ in the region of the end piece itself. As can be seen, a large part of the conductor wires 6 ₁ remains to 6 ₅ and 7 ₁ to 7 ₆ in the designated grooves 9 of Isolierstoffträgers 8. These remaining in their original grooves 9 conductor wires 6 ₁ , 6 ₃ to 6 ₅ , 7 ₁ and 7 ₃ to 7 ₆ by the comb-like ribs 31st , 33 to 35, 41 and 43 to 46 are pressed into their respective grooves 9. The comb-like ribs 31, 33 to 35, 41 and 43 to 46 thus prevent inadvertent emergence of these conductor wires 6 ₁ , 6 ₃ to 6 ₅ , 7 ₁ and 7 ₃ to 7 ₆ and represent the retaining means.

The seen from the top of each second conductor wires 6 ₃ and 7 ₂ , however, have in the example shown a particularly high voltage and were therefore during the pushing of the tail by the adjustment in the space provided receiving chambers 32 and 42 on the side walls 25 and 26 of the Profile body 24 offset. These two conductor wires 6 ₂ and 7 ₂ are thus covered separately and additionally protected. In particular, this also complies with the prescribed clearances and creepage distances. A re-emergence of the conductor wires 6 ₂ and 7 ₂ from the receiving chambers 32 and 42 of the profile body 24 is additionally prevented by the receiving chambers 32 and 42 associated mandrels 37 and 47, which engage in the original intended grooves 9 of the insulating 8. These two conductor wires 6 ₂ and 7 ₂ are thus fully protected against accidental contact.

Fig. 7 can also be taken from the aforementioned anti-rotation. This one will on the one hand by the located on the upper side 27 of the profile body 24 increase 28th and by one of the connecting web 10 of the insulating substrate 8 down protruding vertical web 12 and a laterally inwardly projecting bar 11 guaranteed. Through the bar 11 and the vertical web 12, a free space 13 is limited to the Carrying extra cables over the opening in the tail can be supplied, can be used. At the same time, the arrangement of Strip 11 and the increase 28 of the profile body 24 selected such that the placement of the tail on the busbar 1 only in a particular orientation is possible. By this anti-rotation is ensured that the on the profile body 24th provided ribs 31, 33 to 35, 41 and 43 to 46 and receiving chambers 32, 42 in a position corresponding to the grooves of the Isolierstoffträgers 8 arrive.

The placement of the end piece according to the invention on the power rail then takes place follows. After a sawing the busbar must first in the Receiving chambers 32, 42 of the profile body 24 to be inserted conductor wires from their Grooves of Isolierstoffträgers 8 are manually bent slightly. For the Identification of these lead wires to be bent may be on the metal tab 50 provided markings 55 are used. Namely, the metal tongue 50 vertically inserted from the bottom into the busbar 1 until it reaches the bar 11, the markers 55 indicate the conductor wires to be bent. The Metal tongue 50 thus simultaneously forms a gauge for displaying the auszubiegenden Conductor wires. Preferably, these conductor wires should be bent out so far that they engage in the notches formed as notches 55.

After bending out of the conductor wires, the end piece according to the invention can be applied to the End of the busbar 1 are pushed. The conductor wires to be bent are then on the protruding bottom portions 36 and by means of the mandrels 37 and 47 in the corresponding receiving chambers 32 and 42 of the profile body 24th introduced. The comb-like ribs 31, 33 to 35, 41 and 43 to 46, however, become introduced into the corresponding grooves of the insulating carrier via their run-on slopes, until finally the arrangement of the conductor wires shown in Fig. 7 is achieved. Subsequently, the screw 52 for locking the sheet metal part 53 with the Disengaged insulating carriers and the insulating 8 accordingly secured.

The end piece according to the invention thus allows a simple completion of a Track, while the safety standards are met. It should be noted that on the profile body, of course, several receiving chambers may be provided in the corresponding conductor wires of the busbar system be introduced. In any case, such reception rooms should be for those Conductor wires are provided on which a particularly high voltage is applied. Furthermore, the invention is not limited to busbar systems in which the Conductor wires run on the side walls of a busbar. Rather, one can accordingly modified tail can be used even if conductor wires only run on the bottom side of the busbar.

Claims (15)

End piece for a cross-sectionally U-shaped busbar (1), into which consumers, such as lights, spotlights and the like can be used at any point,
wherein the bus bar (1) has a plurality of non-insulated conductor wires (6 ₁ -6 ₅ , 7 ₁ -7 ₆ ) arranged in parallel slots (9) of an insulating carrier (8),
characterized in that the end piece (20) for attachment to the busbar (1) in the longitudinal direction thereof is pushed onto this and adjusting means (36, 37) which the Aufschiebbewegung in an adjustment for at least one of two juxtaposed conductor wires (6 ₂ , 7 ₂ ) such that the end region of this conductor wire (6 ₂ , 7 ₂ ) is bent out of its groove (9) in the insulating carrier (8). End piece according to claim 1,
characterized in that the end piece (20) has an insulating material enclosed by receiving chamber (32, 42) for the bent-end portion of the conductor wire (6 ₂ , 7 ₂ ). End piece according to claim 1 or 2,
characterized in that the adjusting means comprise a mandrel (37, 47) having at its front end a run-on slope and the sliding of the tail (20) on the busbar (1) in the conductor wire (6 ₂ , 7 ₂ ) associated groove (9) of the insulating carrier (8) engages. End piece according to claim 2 and 3,
characterized in that the adjusting means further comprise a bottom portion (36) projecting from the front end of the receiving chamber (32, 42). End piece according to one of the preceding claims,
characterized in that it further comprises retaining means (31, 33-35, 41, 43-46) connecting the end portions of the arranged adjacent to the herauszubiegenden conductor wire (6 _2, 7 ₂₎ of conductive wires (6 _1, 6 ₃ -6 _5, 7 ₁ , 7 ₃ -7 ₆ ) in the designated grooves (9) of Isolierstoffträgers (8) hold. End piece according to claim 5,
characterized in that the retaining means by comb-like ribs (31, 33-35, 41, 43-46) are formed, which have run-on slopes at their front ends and when pushing the end piece (20) on the busbar (1) into which the respective Conductor wires (6 ₁ , 6 ₃ -6 ₅ , 7 ₁ , 7 ₃ -7 ₆ ) associated with grooves (9) of the insulating support (8) engage. End piece according to one of the preceding claims,
characterized in that the end piece (20) has a profile body (24) to be inserted into the end region of the busbar (1), on the side walls (25, 26) of which the adjusting means (36, 37) and retaining means (31, 33-35, 41 , 43-46) are arranged. End piece according to claim 7,
characterized in that the profile body (24) consists of plastic. End piece according to one of the preceding claims,
characterized in that this at its in the busbar (1) to be introduced end fixing means (53, 54) for the in the busbar (1) arranged Isolierstoffträger (8). End piece according to claim 8,
characterized in that the fixing means are formed by a V-shaped, resiliently bendable sheet metal part (53) having at its lateral ends claw-like projections (54). End piece according to claim 10,
characterized in that the V-shaped sheet metal part (53) is fixed by means of a screw (52) to a protrusion (51) of one of the end piece (20) projecting metal tongue (50), wherein the sheet metal part (53) is fixed such that it spreads when tightening the screw (52). End piece according to claim 11,
characterized in that the metal tongue (50) has markings (55) for indicating the conductor wires (62, 72) to be pulled out. End piece according to one of the preceding claims,
characterized in that the housing (21) of the end piece (20) has a receiving area (22) for pushing the end piece (20) onto the busbar (1). End piece according to one of the preceding claims,
characterized in that it comprises an end cap (56) containing an opening for insertion of cables into the bus bar (1). End piece according to claim 14,
characterized in that the opening is formed by a at the top of the end cap (56) arranged U-shaped collar (57) which engages in a corresponding U-shaped recess (23) at the top of the end piece (20).

Images