DE8708801U1 - Busbar with attachable adapters carrying electrical equipment - Google Patents

Description

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Busbar with attachable adapters carrying electrical equipment

The innovation concerns a current rail according to the generic term of protection claim 1.

A busbar of this type has become known, for example, from the subject matter of DE 24 15 009 A1 or DE 31 20 267 C2. In the latter publication, the lamp holder can only be swiveled upwards and downwards in relation to the busbar at an angle of about 30 - 40°, because the busbar is not circular, but has insulating lugs protruding on the outer circumference, which prevent the holder together with the lamp from being swiveled at a larger angle.

With this well-known busbar with the associated adapter, it is not possible to transmit high currents. Only relatively weak lamps can be operated with such a system, because a line contact is established between the lamp holder and the busbar. The holder has conductive metal rings that extend to the rear, whereby the metal rings make an unfavorable line contact with the metal parts of the busbar, resulting in poor current transfer. When transmitting high currents, contact burns occur at certain points, particularly because the busbar is also exposed at this point and is accessible to dirt, and the dirt makes contact even more difficult.

The rearward extended rings 18,19 of the adapter are only

a low holding force on the power rail _s so that iris disturbances with heavy lamps there is a risk _s that they will automatically swing downwards into a vertical position due to their gravity j or even fall down and then cause serious damage*

Furthermore, there is only a relatively small insulating surface on the outer circumference of the busbar, which means that large, live parts can be grasped with the hand. If, for example, the hand is wearing a ring or similar jewelry, there is a risk that this piece of jewelry could cause a short circuit on the busbar.

The aim of this innovation is to further develop a busbar with adapter of the type mentioned above in such a way that an improvement in the operational reliability of the busbar is ensured with significantly better contact and the possibility of transmitting higher current outputs.

The problem is solved by the technical teaching of claim 1.

C) The feature of the innovation is that the adapter has an essentially circular inner recess in which the busbar rests and that the contact between the adapter and the busbar is made via spring-loaded pressure pieces that are arranged in the adapter.

In a first embodiment of the present innovation, the spring-loaded pressure pieces can be designed as contact bolts which protrude into the recess in a spring-loaded radial direction and

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thus forming an excellent contact with the busbar arranged in the recess.

In a second embodiment, contact springs can be used instead of the spring-loaded contact bolts, which are designed as spring tongues and which rest on the busbar in a current-conducting manner with corresponding tips or projections.

The technical teaching provided provides significant advantages in comparison to the state of the art, because the busbar is now arranged in the middle of an adapter, which has the advantage that the adapter can be rotated around the circular busbar, thereby achieving several advantages at the same time.

Firstly, the angle of rotation of the adapter on the power rail is unlimited, i.e. the adapter can be rotated a full 360°.

Another significant advantage is that the contact between the contact pieces arranged in the adapter and the busbar is significantly better because a surface current transfer takes place under spring force, whereby the spring force can be selected to be relatively high in order to achieve a high contact pressure and thus avoid contact fires.

Another significant advantage of the adapter described is that there is excellent heat conduction, i.e. the heat that develops between the contact pieces and the power rail is efficiently dissipated to the outside over large areas of the adapter and the heat that develops at the adapter socket (where the lamp is plugged in) is generated on the outside of the adapter, so that the lights themselves are protected and the adapter does not lose its heat in the

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essentially to the busbar itself in order not to damage the insulating body arranged in the busbar.

Because the adapter can be rotated a full 360°, it is also possible to bring the contact pieces into the area of the non-current-carrying parts of the busbar, which makes it possible to switch off the lamp that is attached to the adapter in a current-conducting manner by rotating the adapter.

Another significant advantage of this innovation is C) that the adapter can now be very easily connected to the power rail.

There are several options for this:

A first embodiment provides that corresponding clip openings are formed on the adapter so that the adapter can be guided in a radial direction onto the busbar and clipped onto the busbar, which was not possible with the current technology. With the current technology, corresponding ceiling or wall supports had to be removed in order to attach the adapter to the busbar in an axial direction.

This is avoided with the current innovation.

Furthermore, it is essential with this innovation that appropriate plug-in receptacles or sockets can be created in the adapter itself for inserting conventional low-voltage halogen lamps. Such plug-in receptacles can be arranged at any point on the adapter, i.e. both on the narrow side of the adapter, i.e. in the radial direction, and in the axial direction, as seen from both sides of the adapter.

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This possibility of arranging different sockets, which can be arranged at different points on the adapter, allows the lamps to be plugged into any point on the adapter, thereby achieving a particularly high degree of variability in lighting.

It is also possible to attach appropriate folding hinges to the adapter in order to arrange a corresponding plug socket at the free, pivoting end of the folding hinge, so that the lamps O can then be pivoted in relation to the adapter.

Such folding hinges can not only be pivoted in one plane, but it is also possible to design such hinges as ball hinges, which then allows the pivoting of lamps attached to the adapter in any plane ¹ JSt

Other key features of this innovation are that there are various options for connecting the busbar itself with the corresponding power supply lines.

A first embodiment of the present innovation provides that the power supply to the busbar takes place in the axial direction; for this purpose, the busbar has axial plug openings into which the associated plug pins of connection plugs can be inserted, whereby these connection plugs are connected to corresponding supply lines.

However, the busbars themselves can also be connected to one another using so-called connectors, which means that any length of busbar can be achieved.

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Furthermore, it is intended that in addition to the axial supply of the power supply lines, a radial supply is also carried out via corresponding holders that can be clipped onto the busbar. The cables are therefore fed onto the busbar in a radial direction and have corresponding clip openings that are then clipped onto the busbar, thereby achieving a snap-in connection between the clip opening of the holder and the busbar.

In order to prevent the holder from accidentally or undesirably falling off the busbar, additional holding means are provided, such as a clamping screw, which holds the clip opening or the clamping jaws of the clip opening together in a force-fitting manner.

It is important here that contact pieces are arranged in the area of the clamping jaws, which are connected to corresponding current conductors, so that when the holder is clipped on, a current-conducting connection to the busbar is simultaneously established, because the contact pieces arranged in the holder are connected to corresponding current conductors.

The subject matter of the present innovation arises not only from the subject matter of the individual patent claims, but also from the combination of the individual protection claims with one another. All information and features disclosed in the documents - including the summary, in particular the spatial design shown in the drawings, are claimed as essential to the innovation insofar as they are new individually or in combination compared to the prior art.

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In the following, the innovation is explained in more detail using drawings showing several possible embodiments. The drawings and their descriptions reveal further essential features and advantages of the innovation.

Figure 1 shows a schematic section through an adapter in its contact-making position with a busbar.

Figure la shows a schematic side view of the bolt-side end of a contact bolt,

Figure 2 shows a schematic top view of one half of a second embodiment of an adapter with an integrated plug socket,

Figure 3 shows the top view of the second half of the adapter according to Figure 2,

Figure 4 shows a schematic section through a third embodiment of an adapter with contact springs,

Figure 5 shows a schematic longitudinal section through a busbar,

Figure 6 shows the side view of a busbar with an axial contact through a connector,

Figure 7 shows the same busbar as in Figure 8 with a representation of a connector which connects two busbars together,

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Figure 8 shows a schematic of a holder for connecting the busbar to a mounting surface,

Figure 9 shows further details of the holder,

Figure 10 again shows further details of the holder which are not shown in the other figures.

The adapter 1 according to Figure 1 consists of an insulating housing 2, which preferably consists of a plastic material, e.g. a polycarbonate; instead of such a plastic, a ceramic material or another plastic material can of course also be used.

The external dimensions of the insulating housing 2 are also arbitrary, i.e. they are open to different design requirements.

A central recess 4 is arranged in the insulating housing 2, in which a busbar 5 is mounted. The busbar 5 is arranged with radial play in the recess 4, so that a slight rotation of the adapter 1 in relation to the fixed busbar 5 is possible.

The insulating housing 2 has a clip opening 3 at the top, which has opposite conical flanks 12, the surfaces of which extend towards the center of the recess.

The flanks 12 merge into an undercut 14 in the area of the recess 4, so that an unintentional falling out of the busbar 5 from the clip opening 3 is avoided.

The connection of the adapter 1 with the busbar 5 is now

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particularly simple because the adapter 1 with its clip opening 3 is placed on the outside of the busbar 5 and the clip opening 3 widens through radial pressure and the busbar 5 snaps into the recess 4.

In order to allow the flanks 12 to move apart, it is provided that a slot 13 is arranged in the insulating housing 2 radially opposite the clip opening 3.

"In the insulating housing 2, which is otherwise exactly symmetrical to the longitudinal axis of the core, two mutually opposite recesses 6 are provided, with a contact bolt 7 being spring-mounted in each recess. The contact bolt consists of a bolt end 25 (see Figure 1a ₎ and an adjoining head 9 of enlarged diameter which sits in a corresponding enlarged recess, whereby a displacement limitation of the contact bolt 7 in the radial direction is achieved. A spring 10 rests on the head of the bolt 9, the other end of which rests on the base of the recess 6.

As a result, the bolt 7 is pressed in the radial direction against the busbar, whereby according to Figure la it is essential that (J »a bolt end 25 has on its front side a radius corresponding to the !The busbar 5 has a flattened portion 24 adapted to it in order to ensure that the front side 23 is pressed with a relatively large area against the current-carrying parts of the busbar 5.

Each contact pin 7 is, as shown schematically, connected to a current conductor 11 which is led out of the adapter 1 and is connected in a manner not shown in detail to a plug-in socket of any design.

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The plug-in socket can be connected directly to the adapter 1 via appropriate screws, rivets or ball joints. However, it is also possible for the plug-in socket to be connected to the insulating housing 2 only via the current conductors 11. This means that such a plug-in socket is suspended from the adapter 1. However, it is preferred if the plug-in socket is integrated directly into the adapter, as shown in Figure 2 .

The busbar 5 itself is exactly symmetrical to the central axis 35 (see Figure 5) and consists of an egg-shaped insulating body 37, which are opposite one another and exactly symmetrical to one another, with the two C-shaped insulating bodies 37 being connected to one another in one piece by an insulating central web 34. Electrically insulated in the insulating body 37 of the busbar 5, two opposing metal profiles 36 are clipped into the facing tabs 40 of the C-shaped insulating bodies 37, with the metal profile 36 having lateral projections 39 which are clipped into undercut grooves 33, with the groove 33 being defined on the one hand by the tab 40 of the C-shaped insulating body 37 and on the other hand by the central web 34.

As a result, the lugs 39 are clipped into the undercut groove 33 and are thus secured against falling out.

It is also important for the busbar according to Figure 1 and Figure 5 that the metal profiles 36 form precisely circularly concentric outer surfaces 38 on their outer circumference, which merge into the same circularly concentric outer surfaces 43 of the insulating body 37, so that a practically seamless circular outer circumference of the busbar 5 is ensured.

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The metal 1 profiles 36, which are opposite one another and exactly symmetrical to one another, each form a central plug-in receptacle 41 between themselves and the associated insulating center web 34. The inner surface 42 of the plug-in receptacle 41 is semicircular in the embodiment shown, but it is also possible in embodiments not shown in more detail to profile this inner surface 42 accordingly in order to be able to insert not only circular plug pins into the two plug-in receptacles 41 lying opposite one another, but also plugs with a corresponding C profile.

The busbar 5 described in this way is now used in Figure 1 with the adapter 1 described and it is now clear that the adapter can be rotated in the direction of arrow 8 in relation to the fixed busbar 5, whereby after a rotation of 90° the contact bolts 7 come onto the C-shaped insulating bodies 37 and thus the contact bolts 7 are de-energized and the plug socket (not shown in more detail) is switched off.

If the rotation continues, the contact bolts 7 return to the current-carrying metal profiles 36 and thus the current conductors &Pgr; * supplied with electricity again.

Figures 3 and 4 show a further embodiment of an adapter 21, in which the same parts are also provided with the same reference numerals as in Figure 1. This means that the same contact bolts 7 with corresponding current conductors 11 are present, except that in this adapter a plug socket is integrated in the insulating body. For this purpose, the current conductors 11 connected to the contact bolts 7 lead directly to corresponding contact plates 17 and are firmly connected to such contact plates 17.

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connected. In a manner not shown in detail, a helical compression spring is arranged under each contact plate 17, which spring-loads the contact plate 17 in a direction perpendicular to the plane of the drawing and presses it against a corresponding wall of the counterpart 20 (see Figure 3) of the adapter 21. This therefore forms a plug-in socket 15 integrated in the adapter 21, which has two plug-in openings 16 that are insulated from one another and spatially separated from one another. The lamp is therefore inserted into the plug-in openings 16 in the direction of the arrow 15 in Figure 2.

Another feature of the adapter 21 shown in Figures 2 and 3 is that the adapter has a radial mounting channel 18 that opens into the central recess 4. A threaded hole 19 can be made in the mounting channel 18, whereby the adapter 21 can be connected to a mounting surface via a corresponding threaded screw.

This threaded screw then simultaneously serves to firmly connect the adapter 21 to the busbar 5 in order to prevent accidental twisting. If the adapter 21 is to be twisted, then the threaded screw in the threaded hole 19 is loosened and the adapter can then be twisted.

Instead of a threaded screw that fits into the threaded hole 19

is screwed in, a spring-loaded pressure piece can be arranged in the mounting channel 18 instead, which presses against the busbar in a spring-loaded manner in the radial direction.

In the counterpart 20 shown in Figure 3, the corresponding Recesses 6 can be seen, which correspond to the one shown in Figure 2.

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Furthermore, it can be seen that corresponding rivet holes 22 are present in the adapter 21, whereby the two halves of the adapter shown in Figures 2 and 3 are held together.

Figure 4 shows another embodiment of an adapter 26 in a schematic representation, where it is shown schematically that instead of in the radial direction by means of

In addition to the contact bolt loaded with helical compression springs, contact springs 27 can also be used, which are designed as spring strips and exert their springing effect in a radial direction inwards onto the busbar (not shown in more detail).

It is shown schematically that each contact spring 27 consists of a sheet metal strip which is anchored in the insulating body 60 of the adapter 26, wherein the contact-making part of the contact spring 27 is fastened in the area of a recess 28 in the insulating body 60 in order to achieve a certain radial spring travel of the contact spring 27.

The tip 29 of the contact spring 27 shown in Figure 4 can either be pointed, or also rounded or flattened, as was shown in Figure 1a using the bolt-side end of the contact bolt 7.

It is also important in the embodiment that the contact springs 27 are guided outwards into the area of a plug-in socket 15 via corresponding strips 30, which are integrally connected to the contact spring 27, wherein the strips 30 form plug-in sockets 31 in this area, so that a lamp can be plugged in there immediately.

Figure 6 shows the axial contacting of a busbar 5, whereby it can be seen that in the axial connections shown in Figure 5

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The plug pins 47 of a plug 44 are inserted into the plug receptacles 41 of the busbar 5, whereby the plug 44 is only half inserted into the busbar 5 for the sake of better clarity.

The plug 44 is provided with an insulating piece on its outer circumference, the wires of the insulated supply line 45 being connected in a current-conducting manner to the plug pins 47 in ^{the region} of this insulating piece 46.

With the described connector 44 it is possible to transmit high currents to the busbar, for example currents in the range of amperes.

Figure 7 shows a modified embodiment in comparison to Figure 6, where it can be seen that a connecting plug 48 is provided which has corresponding plug pins 47 on one side as well as on the other side, so that busbars 5 of any length can be axially connected to one another using such a connecting plug 48.

Figures 8-10 show the details of a holder which serves to suspend a busbar 5 from a ceiling, a wall or from another fastening surface or to fasten it to this fastening surface, and wherein this holder 50 simultaneously forms a power supply for the busbar 5.

Such a holder 50 is used primarily for high current loads, i.e. for supplying currents of 50 amperes and more into the described busbar 5.

So either a holder SO is used» or a supply line

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Combinations of both feeding methods can also be used.

The holder 50 has an insulating body 52* which is approximately H-shaped in cross section and has a circular-cylindrical shape on the outer circumference.

The front face of the holder 50 has an insertion slot 49 which is placed radially on the outer circumference of the busbar and then, by applying radial pressure, the busbar snaps into a clip opening 51 arranged behind the insertion slot. The inner circumference of the clip opening corresponds approximately to the outer circumference of the busbar, so that it sits with a press fit in the clip opening 51.

In order to improve the fit between the clip opening 51 and the outer circumference of the busbar 5, an additional clamping screw 57 is provided, which is designed as a threaded screw and, in a manner not shown in detail, holds the two spring legs, which define the insertion slot 49, together in a force-fitting manner.

By tightening the clamping screw 47, the width of the insertion slot 49 is changed so that the press fit on the busbar can be improved.

It is important that the holder 50 is also the current-supplying part for the busbar 5. For this purpose, metal contact pieces 59 are integrated into the insulating body 52 of the holder 50 and run in the axial direction backwards to the end of the holder (see

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Figure 9* Figure 1ö) And which are connected in their rear part to current conductors 58 via connecting means not shown in detail* The contact pieces 50* thus break through the insulating body ¹ 52 at least in the area of the symmetrically opposite legs 61, so that when the busbar 5 is clipped in, the metal profiles 36 of the busbar 5 come into contact with the contact pieces 59 of the holder 50 and this provides an extraordinarily favorable current transfer with which even high currents can be transmitted.

^ It is important that the clamping screw 57 is inserted into the opposite contact pieces 59 so that it does not cause a short circuit. For this purpose, it can be provided that the clamping screw itself is made of plastic with its bolt-side end or it can also be provided that a plastic nut or a similar insulating part is arranged in one of the contact pieces 59, into which the clamping screw 57 engages.

For plastics-technical reasons, the insulating body 52 is provided with ribs 53 placed one behind the other axially behind the contact pieces 59, and at the rear end of these ribs of the insulating body 52, a metal base 54 is cast in the plastic material of the insulating body 52Q, which has a middle, central threaded bushing 54 which provides an internal thread. According to Figure 9, a threaded rod 56 is screwed into this internal thread, so that this threaded rod 56 is suitable for holding on any fastening surface. For the sake of simplicity, the holder 50 is shown exploded in Figure 10, while in Figures 8 and 9 it is shown in its actual construction.

The current conductor 58 is guided in lateral, axial grooves 62 of the insulating body 52 of the holder 50 and thus does not protrude

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DRAWING LEGEND

1 adapter

2 Insulated housing

3 Clip opening

4 recess (14 mm 0)

5 Busbar

6 Recess

7 contact bolts

8 Arrow direction

9 Head

10 Spring

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12 flank

13 Slot

14 Undercut

15 Plug-in socket

16 Insertion opening

17 Contact plate

18 Mounting channel

19 Threaded hole

20 Counterpart

21 Adapter

22 Rivet hole

23 Front side

24 Flattening

25 Bolt end

26 Adapter

27 Contact spring

28 Recess

29 Tip

31 Plug-in socket

32 Wall

33 grooves

34 Center bar

35 Longitudinal center axis

36 Metal profile

37 Insulating body

38Outer surface (circular concentric)

39 Approach

40 rags

41 Plug-in socket

42 Interior surface

43 Outer surface (circular concentric)

44 plugs

45 Supply line

46 Insulating piece

47 connector pin

48 connectors

49 Insertion slot

50 holders

51 Clip opening

52 Insulating bodies

53 Rib

54 Metal base

55 Threaded bushing

56 threaded studs

57 Clamping screw

58 conductors

59 Contact piece

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Claims (11)

PATEtMAlWALTE"..". «· 4 DR.-ING. G. RIEBLINd DR. ING.P. RIEBLING Dipl.-Ing., Ing. (grad.) Dipl.-Ing. EUROPEAN PATENT ATTORNEYS Our references / our ref.: R 501-31-ku Please repeat in the answer D-8990 Undau (Lake Constance) Rennerle 10 · PO Box 3160 YourReference Your message from date _ . Yourref Yourletlerof Date /. rtUgUSt Subject: Re Registrant: Mr. Ulrich Reichardt, Rothkreuz 11, 8995 Weissensberg Protection claims 1. Busbar with attachable adapters carrying electrical equipment, the busbar of which has an insulating body which is arranged between the facing inner surfaces of two electrically conductive metal profiles, the contact surfaces of which arranged on the outer circumference can be contacted by two facing contact surfaces of the adapter, which can be placed on the busbar in a clamping fit by means of its contact surfaces in a friction-locking manner, characterized in that the adapter (1, 21, 26) has an essentially circular, central recess (4) through which the busbar (5) which is circular on the outer circumference passes, and that the contact surfaces of the adapter (1, 21, 26) are designed as pressure pieces (7ä, 27) which are spring-loaded in the radial direction, Telex! Facsimile/Fax! Bank accounts! . , PostschMkkönto ,&ldquor;~&trade;. _u ^,&trade;54374(pa(enf->d) +49-8382*7 8027 Bayer, Vereinsbank ÜndaU (B) NM20e578 (BLZ 735 200 74) Munich 2952S'ÜO9 mUS Tetegramrn^dtesse! ßfet&lliflCS i"i ,", ,&EEgr;&Lgr;>&rgr;·0&Bgr;»&igr;>^aU(BUiI ¹ -6670278920(BLZ73320442) naln^lindaU ,"* i* &iacgr;' ,"t jVblksbfnk&mgr;&eegr;&iacgr;&psgr;(B)Nf,51720000(BLZ735901 20) 2. Busbar according to claim I ₅ characterized characterized in that the spring-loaded pressure pieces are designed as contact bolts (7) which are arranged opposite one another in recesses (6) of the adapter (1), and that a spring (10) is supported on each contact bolt (7). 3. Busbar according to claim 2, characterized in that characterized in that the contact-making front side (23) of the contact bolt (7) has a flattened area (24) whose radius corresponds to the outer circumference of the busbar (5). 4. Busbar according to claim 2, characterized in that the contact bolt (7) is connected to a current conductor (63) which is connected to one pole of a plug-in socket (15) arranged in the adapter (1). 5. Busbar according to one of claims 1 - 4, characterized in that the adapter (1) can be clipped onto the busbar (5) in the radial direction and for this purpose has a clip opening (3) opening into the central recess (4), the opposing flanks (12) of which initially narrow conically in the radial direction and then merge into undercuts (14) which widen in the radial direction. 6. Busbar according to one of claims 1 and 5, characterized in that the spring-loaded pressure pieces are designed as strip-like contact springs (27) which are mounted in a radially resilient manner in recesses (28) arranged circularly to the central recess (4). 44 «» t 4 »4 4 4 If I 4 i iiiittil 4 4 «4 4*4 Mt 7. Busbar according to one of claims 1 ^to 5, characterized in that the busbar (5) consists of an insulating body (37) made of one material and designed as a double T in cross section, the outer surface (43) of which is circular, and that the metal profiles (36) are clipped into tabs (40) of the O-shaped insulating body parts facing one another and engage there in undercut grooves (33), the groove (33) being formed by an inner surface of the C-shaped insulating body part and by a surface of the central web (34) connecting the insulating body parts. 8. Busbar according to claim 7, characterized g e k e &eegr;&eegr;&zgr; e i c h &eegr; et j that the metal profiles (36) axial, have inner grooves near the centre, each of which runs in the direction of Center bar (34) of the insulating body (37) are open and which j· Form plug-in receptacles (41). | 9. Busbar according to claim 8, characterized in that I characterized in that the plug receptacles (41) of the | Busbar (5) for axial connection of several busbars (5) f via a connector plug (48). ■ 10. Busbar according to claim 8, characterized in that the plug receptacles (41) of the busbars (5) serve to supply power by means of a plug (44). .; 11. Busbar according to one of claims 1 - 10, characterized in that the busbar f (5) can be contacted via a holder (50) which has an elongated insulating body (52) which has an insertion slot (49) on one end face which is directed radially towards the - .- -t &tgr;&mdash;-r ' r^s^i^^-^T-^i: - r &mdash; i &bull;&bull;I · · t» <> < The outer circumference of the current rail (5) can be plugged on, that a clip opening (51) of enlarged diameter is arranged in the radial direction behind the insertion slot (49), the circumference of which corresponds approximately to the outer circumference of the current rail (5), and that metallic contact pieces (59) are arranged in the insulating body (52), which break through the insulating body (52) in the area of the opposing legs (61) and which legs (61) define the insertion slot (49) and the clip opening (51) between them.