DE10008868C2 - Connecting bridge for connecting glass wall segments that are equipped with solar panels - Google Patents

Description

The invention relates to a by means of a central support bearing Connected wall, a substructure or the like bridge for connection to one or more glass wall segments or plate segments that are equipped with a solar panel or in which the individual solar cells are integrated, with at least a support arm running radially from the support bearing, on the support arm Free end facing away from the bearing a connecting joint for the connection one that clamps the glass wall segment or plate segment Clamp fitting is arranged, with the central support bearing Space bearing is and the connecting joint out as a pin joint is formed, extending in the axial direction at the free end of the Support arm a connection tab is available.

In generic devices according to DE 38 43 619 A1 and FR 2 676 768 A1 is a four-armed connecting bridge over a zen tral support bearing connected to a substructure, while the free ends of the support arms via a pin joint to a glass pane are connected.

The object of the invention is the required adaptability and Monta friendliness of the connecting bridge to construction tolerances of the subcon To optimize structure or the like, that means in particular the central support of the support bearing of the connecting bridge on one Substructure or the like in connection with an articulated Support of the individual support arms of the connecting bridge to verbes fibers. Furthermore, a simple constructive design of the total ten connecting bridge, in particular the support arms and the to the free The ends of the support arms are aimed at the joints, also a possibility of routing the connection cables of the solar panels ben must be.  

The invention solves the stated problem with the teaching according to claim 1, according to which the pin of the pin joint parallel to the plane of the glass Wall segment is arranged on the connecting strap, which with an interlocking fork of the clamp fitting interacts and between the Support arm and the clamp fitting is arranged. At the same time it is Support bearing designed so that there is a connection cable allows, the support bearing also a cable may include taking.

According to the solution according to the invention, only one is articulated Support provided in the central support bearing, which is an adjustment of the central support bearing and thus the connecting bridge to the subcon structure or the like, while using simple bolt tightness steer between the free ends of the support arms and the clamp fittings an adjustment of the clamp fittings to the glass to be connected wall segments or plate segments with the solar panels. Here - as will be explained below - preference is given to Klemmbe beats use that is deformable to a limited extent, that is, in itself are limited articulated.

For forwarding the connection cable from the individual solar panel len will become a Vorrich after the central support bearing tung z. B. proposed in the form of a tube, in which the connection Immerse the cable and continue through a central hole in a fastener member to a substructure and thus concealed to one Inverter. The cables laid in this way are vandalism safe and do not disturb a viewer's gaze on the whole Construction of the glass wall segments with their solar panels.

Further features of the invention are characterized by the subclaims records.

Connection bridges for the aforementioned purpose are usually made of stainless steel or cast iron. With regard to the constructive shape tion of the support arms of the connecting bridge is proposed, this full-walled or hollow and circular or oval in cross-section the, starting from the central support bearing against the glass wall segment  or plate segment to be convexly curved can. For manufacturing reasons, it has proven to be useful that the support arm of the connecting bridge in a radial bore of the central support bearing is soldered or made in one piece as a casting is and at its free end a connecting tab of the Anschlussge has steering, to which a connecting fork of a clamp fitting closes, with the connecting strap and the connecting fork connecting the An form final joint. The connection joint is not rigid, it serves for tension-free installation and only transmits power.

In a constructive design of the technical teaching according to claim 1 the invention further proposes that the central Spherical bearing formed from a pot-like base body exists, which is directed against the substructure or the like Pot bottom an opening for a the opening with play has comprehensive fastening screw, on which the sub construction or the like facing surface of the pot bottom a concave troughed storage area for receiving a concave comm Lenticular surface is arranged that further on the surface of the pot facing the glass segment or plate segment a flat bearing surface for the support of a flat bearing area having plano-convex lens is arranged, at the con a plano-convex lens with its convex surface and that the space joint by means of a with the fastening screw screwable lock nut is adjustable, and at the same time all previous mentioned components lying on an axis on a central hole through which the connection cables can be safely guided where at the same time the mobility and adjustability of the articulated joint gers is retained.

With such a formation of the space joint in the central area the connecting bridge can easily be attached to the fastening screw the substructure, whereby they have a certain win incline to the plane given by the extension of the arms can eat. The aforementioned lenses shift towards each other or opposite the corresponding contact surfaces of the pot-like  Body. After connecting the fastening screw to the Substructure can tighten the lock nut and thus that Be articulated.

The open side of the glass segment or plate segment facing pot-like base body takes the pipe to collect the connection cable on. The tube can be molded on, or by means of a thread be screwed on. For better insertion of the connection cable the pipe has an inner chamfer or a funnel-shaped open end sen.

If the connection bridge can be connected to a wall can the mounting screw articulated to the support bearing by means of a cross-bore mounting sleeve with the Wall are connected, the fastening sleeve abutting the wall has supporting plates that have a flat support of the attachment ensure sleeve on the level of the wall.

The connecting joints at the ends of the support arms are designed that the existing connecting lugs on the support arms fit in extend in the axial direction of the support arms. This will make one below 45 ° possible introduction of force from the flat component of the glass wall segment mentes with the solar panels over the support arms into the central support Connection bridge bearing possible.

The connection of the connecting lugs and connecting forks of the clamp fittings in the form of a connecting joint is only non-positive, that is called the connecting joint is not rigid. The connection between The connecting lug and connecting fork can be secured by a bolt, rivet, Screw etc. can be realized.

As mentioned above, in the invention, preferred clamp fittings Ver application whose internal structure is designed so that between the Glass pane or the like clamping elements of the Clamp fitting and the connection point to a bracket, for example also be on the connection joint of a connecting bridge limited mobility is given to go directly into the glass pane  (Solar panel) introduced voltages already in the area of the clamp to be able to absorb and eliminate impact.

In an embodiment of the invention, the clamp fitting is characterized thus by the fact that it has an inside clamping element and an au has clamping element on the outside, the clamping element on the inside ment on its lateral surface facing away from the glass wall segment conical or spherical formed by a permanently elastic spring member Surface (shell surface) against which a complementary surface of a Adjust the inner jacket of a union bell with adjustable preload bar, with the cap on the substructure turned side with a threaded one from a union has a cylindrical projection and between the Union bell and the union nut with radial play Flange of a connecting fork of the pin joint (connecting joint) can be clamped. The clamp fitting designed in this way leaves next to the from the given by the permanently elastic spring member possibility of additional compensation of the clamp fitting compared to the connection joint in that the flange of the An closing fork is guided with radial play in the clamp fitting. This Feature also ensures, for example, an adaptation to construction Tolerances of the boreholes in the individual glass wall segment instruments.

In a further embodiment of the invention, a clamp fitting basically the same design between the cap and the Union nut a part of the connecting fork Have space joint, for example, by a lenticular Extension of the connecting fork and a corresponding one, between over throwing bell and nut mounted second lens is formed. Also by means of this additional space joint, a good adaptation of the Clamp fitting on borehole tolerances of a glass wall segment possible, which makes it clear that when installing the glass wall segment with solar panels no tension in the solar cells and also arise in the glass wall segments.  

The structural design of the connection according to the invention bridge is not based on the use of prior art knew four arms limited; it can be three, two or only one each Weil have support arm extending radially to the support bearing. To continue The connection cable for the solar cells is located on the support point each have a device that is clean, vandal-proof and easy installation of these connection cables.

The invention is based on various embodiments Example of a connecting bridge, two embodiments a clamp fitting and an embodiment of a Stützla gers described in more detail.

Show it:

Fig. 1 A four-armed connecting bridge in the front view.

Fig. 2 The connecting bridge of Fig. 1 in plan view.

Fig. 3 The connecting bridge according to FIGS. 1 and 2 as a perspective exploded view.

Fig. 4 The top view of a three-armed connecting bridge.

Fig. 5 A cable intake in section.

Fig. 5 A cable holder in section with a funnel-shaped end region.

Fig. 6 A two-armed connecting bridge in the front view.

Fig. 7 A two-armed connecting bridge in plan view.

Fig. 8 The connecting bridge according to FIGS. 6 and 7 as a perspective exploded drawing.

Fig. 9 A two-armed connecting bridge with wall connection in the front view.

Fig. 10 A two-armed connecting bridge with wall connection in plan view.

Fig. 11 The connecting bridge according to FIGS. 9 and 10 as an exploded perspective view.

Fig. 12 A one-armed connecting bridge in the front view.

Fig. 13 A one-armed connecting bridge in plan view.

Fig. 14 The connecting bridge according to FIGS. 12 and 13 as a perspective exploded drawing.

Fig. 15 A first embodiment of a clamp fitting in the front view.

Fig. 16 A clamp fitting according to Fig. 15 in a sectional view AA AA.

Fig. 17 A second embodiment of a clamp fitting in the front view.

Fig. 18 A clamp fitting according to Fig. 17 in a sectional view AA AA.

Fig. 19 A clamp fitting according to Fig. 17 in a sectional view AA AA, but showing the adjustment options.

Fig. 20 is a vertical section through a central support bearing with a closed clamp fitting a two-armed connec tion bridge.

Fig. 21 A vertical section through a central support bearing with a closed clamp fitting a two-armed connec tion bridge, but with an adjusted fastener and glass wall segment and cable routing.

Fig. 22 Another embodiment of a connecting bridge according to Fig. 1 in the assembled state on four glass wall segments, with a modified cable holder in a perspective view.

Fig. 23 A connecting bridge according to Fig. 22 in side view with a cut central part (fastening member, central support bearing).

Fig. 24 is a perspective exploded view according to FIG. 22.

A connecting bridge, generally designated 1, has a central support bearing 2 designed as a space bearing, to which four support arms 4 are connected according to FIGS . 1 to 3. The support arms 4 are used with their cylindrical ends in radial bores 44 egg nes pot-like base body 8 and soldered or welded; it is also possible to manufacture the connecting bridge 1 consisting of the base body 8 and support arms 4 as a cast part. At the free ends of the support arms 4 , connecting joints 5 are formed, each of which consists of a connection bracket 7 arranged on the support arm 4 and a connection fork 41 arranged on the clamping arm 6 . The connection tabs 7 at the free ends of the support arms 4 extend in all embodiments, that is, one-armed, two-armed, three-armed and four-armed versions of a connecting bridge 1 , always in the axial direction of the supporting arms 4 , so that when attached to a corner of a Glass wall segment 3, the connecting straps always run at 45 °. This results in a better distribution of force and the introduction of force into the connecting bridge 1 via the clamp fitting 6 , the connecting joint 5 being held movably by means of a screw 46 . Instead of the screw 46 , a rivet, hollow rivet, bolt or another equivalent component can be used, which realizes only a force connection. The connecting fork 41 is part of the respective clamp fitting 6 that clamps a glass wall segment 3 , 57 . In the exemplary embodiment, a fastening member 11 is mounted in the central support bearing 2 , which has a central bore 54 for receiving a cable 53 .

With reference to FIG. 3 in conjunction with FIG. 20, the central support bearing 2 has the pot-like base body 8 , the pot base 9 of which is directed against a substructure 43 (see FIG. 21) and has a passage opening 10 for the fastening member 11 passing through the passage opening 10 with play having. On one of the substructure 43 facing surface 12 of the pot base 9 , a concavely troughed bearing surface 13 is arranged for receiving a lens 15 , which has a convex complementary surface 14 . On a glass segment 3 , 57 facing surface 16 of the pot base 12 there is also a flat bearing surface for supporting a plano-concave lens 19 which has a flat bearing surface 18 . A plano-convex lens 21 lies with its convex surface 22 on a concave surface 20 . By means of a lock nut 23 which can be screwed to the fastening member 11 , the space joint thus formed can be adjusted and locked without the cable routing of the cable 53 in the central bore 54 being adversely affected.

Fig. 21 shows a situation in which the fastening member 11 is pivoted about a pivot point 45 by an amount X for adaptation to the sub construction 43 . The area of the pot-like base body 8 directed against the glass segment has a bore with an internal thread into which a cable receptacle 52 is screwed with its external thread 25 . The cable receptacle 52 is designed as a tube (bore 55 ) on both sides. The unscrewed free end of the cable receptacle 52 can, for. B. have an internal chamfer 24 or an outwardly extending funnel-shaped end region 28 . This configuration ensures proper guidance of the cables 53 running through the bore 55 and the bore 54 contained in the fastening member 11 .

Fig. 4 shows a plan view of a three-armed embodiment of a connecting bridge 1 .

Fig. 6 shows a front view of a two-armed embodiment egg ner connecting bridge 1 ; Fig. 7 shows the associated top view. Fig. 8 is a perspective view of the embodiment of FIGS. 6 and 7. In the embodiment according to FIGS. 6 to 8 the fastening member 11 may in a not-shown ceiling above a wall 47 or a sub-structure are fixed.

The embodiment of FIGS . 9 to 11 corresponds in wesent union to the embodiment of FIGS . 6 to 8; in contrast to this, the connection of the fastening member 11 does not take place on a ceiling construction, but on a wall, not shown. For this purpose, a fastening sleeve 26 is placed on the fastening member 11 , which is provided with support plates 27 for flat contact with the wall. The fastening sleeve 26 can be secured on the fastening member 11 by means of a lock nut 48 .

Figs. 12 to 14 show the formation of a one-armed Verbin dung bridge 1 which is closed in the corner of a wall 47 of a not easily Darge ceiling structure by means of the fixing member 11 is.

FIG. 15 is the view showing a clamping fitting 6; Fig. 16 is a section along the line AA according to Fig. 15. Fig. 16 (see also Fig. 18) shows that the clamping bracket 6 an inside Klemmele element 30 and an outside clamping member 31, said in nenseitige clamping member 30 on its wall surface 32 facing away from the glass wall segment 3 , 57 has a conical or spherical surface (outer surface 34 ) formed by a permanently elastic spring member 33 . The permanently elastic spring member 33 may be formed by a rubber cushion or the like Chen. Against the conical or crowned surface 34 , a complementary surface 35 of an inner jacket of a cap 36 can be adjusted with an adjustable preload. The union bell 36 has on its side facing the substructure 43 a provided with a Ge thread 37 cylindrical extension 39 , which is covered by a union nut 38 . Between the union bell 36 and the union nut 38 , a flange 40 guided with radial clearance is attached to a connecting fork 41 . The connecting fork 41 is part of the connecting joint 5 .

Fig. 17 also shows the view of a clamp fitting 6 ; Fig. 18 shows the corresponding section on the line AA according to 17. Fig FIG.. 18 is different from Fig. 16, only in that a space joint 42 is provided in place of the flange 40 according to Fig. 16, which consists essentially of a lens-shaped extension 50 of a here designed as a connection nut 49 connecting member and a between the lenticular extension 50 and the coupling bell 36 clamping lens 51 exists.

FIG. 19 shows the articulated design of the clamping fitting 6 when it is necessary to adapt to structural tolerances before the articulation 42 becomes rigid. An angular deviation of the spatial joint is designated Y here; the possibility of pivoting due to the permanently elastic spring member 33 is 5 ° in the illustrated embodiment.

In Fig. 21 the connection of a cable 53 , which takes up through the cable receptacle 52 and then through the bore 54 of the connecting member 11 of the glass wall segment 3 is shown. The cable 53 goes away from a connector 56 . The connecting piece 56 forms the interface between the cable 53 and a solar-active layer 57 located in or on a glass wall segment. The solar-active layer 57 is formed by individual solar cells interconnected to form a solar panel.

In a further embodiment, a connecting bridge 1 is shown in FIG. 22, which is shown in perspective on four glass wall segments 3 , 57 via the clamping fittings 6 in connection with the connecting joints and adjoining support arms 4 , the support arms ending in the central support bearing , connected. In this exemplary embodiment, the connecting bridge 1 has a modified cable receptacle 58 . The emerging from the cable receptacle 58 cables 53 are connected via connecting pieces 56 to the glass wall segments and the voltaic devices located therein.

For a better understanding, reference is made to FIG. 23, which shows a detail and thus a sectional view of FIG. 22 here in particular of the fastening member 11 and the central support bearing with the cable receptacle 58 connected to it. The fastening of the fastening member 11 with the support bearing 2 has been carried out in the same way as already described. A modification shows a cable receptacle 58 which has a central constriction 59 . At its free end, the cable receptacle 58 has a funnel-shaped end 61 to ensure a safe insertion of the cables 53 , which are connected to the connec tion pieces 56 , to ensure. Through the mitt sized constriction 59 may tion in an appropriate dimensional coor with the used cables 53 at the same time a strain relief for the cable 53 to be created. The other end of the cable receptacle 58 also has a funnel-shaped course 60 , at the end of which there is a thread 62 which is screwed into the central support bearing. Thus, a pre-assembly of the cable with the cable recording is possible and then the entire unit is screwed to the central support bearing 2 , the cables 53 first having to be guided through the fastening member 11 .

For individual assembly, reference is made to FIG. 24, in which the connec tion bridge 1 with its individual parts such as fastening member 11 , central support bearing 2 with attached support arms 4 , clamp fittings 6 as well as the cable receptacle 58 and the lock nut 23 is shown.

reference numeral

1

connecting bridge

2

central support bearing

3

Glass wall segment

4

Beam

5

connection joint

6

clamping fitting

7

connection tab

8th

pot-like body

9

pot base

10

Through opening

11

attachment member

12

Outer surface of the bottom of the pot

13

storage area

14

complementary surface

15

lens

16

Inner surface of the bottom of the pot

18

storage area

19

lens

20

concave surface

21

lens

22

convex surface

23

locknut

24

chamfer

25

thread

26

mounting sleeve

27

support plates

28

funnel-shaped end area

29

thread

30

clamping element

31

clamping element

32

lateral surface

33

permanently elastic spring link

34

lateral surface

35

complementary surface

36

Coupling bell

37

thread

38

Nut

39

cylindrical extension

40

flange

41

connecting fork

42

space joint

43

substructure

44

radial bore

45

pivot point

46

screw

47

wall

48

locknut

49

connecting nut

50

lenticular process

51

lens

52

cable storage

53

electric wire

54

drilling

55

drilling

56

connector

57

solar active layer

58

cable storage

59

medium constriction

60

funnel-shaped course

61

funnel-shaped end course

62

thread
X angular deviation
Y angular deviation

Claims (22)

1. By means of a central support bearing ( 2 ) on a wall ( 47 ), a substructure or the like connected connec tion bridge ( 1 ) for connection to one or more glass wall segments ( 3 , 57 ) or plate segments with solar cells, with at least one radially to the support bearing ( 2 ) extending support arm ( 4 ), at the free end of the support bearing ( 2 ) facing away from a connecting joint ( 5 ) for connecting a glass wall segment ( 3 , 57 ) or plate segment clamping clamp fitting ( 6 ) is arranged, the central support Bearing ( 2 ) is a space bearing and the connection joint ( 5 ) is designed as a bolt joint, with a connection lug ( 7 ) present in the axial direction ver running at the free end of the support arm ( 4 ), characterized in that the bolt of the Bolt joint is arranged parallel to the plane of the Glaswandseg element on the connecting bracket ( 7 ), which with a connecting fork ( 41 ) of the clamp fitting ( 6 ) interacts and is arranged between the support arm ( 4 ) and the clamp fitting ( 6 ), and from the central support bearing ( 2 ) to the glass wall segments ( 3 , 57 ) with the solar cells pointing a cable receptacle ( 52 , 58 ) is available , 2. Connecting bridge according to claim 1, characterized in that the support arm ( 4 ) of the connecting bridge ( 1 ) is full-walled or partially hollow and circular in cross-section or in another renal geometric shape. 3. Connecting bridge according to claim 1 and 2, characterized in that the support arm ( 4 ) of the connecting bridge ( 1 ) from the central support bearing ( 2 ) starting against the glass wall segment ( 3 ) or plate segment is straight or convexly curved. 4. Connecting bridge according to one of claims 1 to 3, characterized in that the support arm ( 4 ) of the connecting bridge ( 1 ) in a radial bore ( 44 ) of the central support bearing ( 2 ) is soldered or welded. 5. Connecting bridge according to one of claims 1 to 4, characterized in that the central support bearing ( 2 ) and the support arms ( 4 ) are cast in one piece. 6. Connecting bridge according to claim 1, characterized in that the bolt joint (connecting joint) ( 5 ) is subjected to frictional engagement. 7. Connecting bridge according to one of claims 1 to 5, characterized in that the articulated bearing of the central support bearing ( 2 ) consists of a pot-like base body ( 8 ), the pot bottom ( 9 ) directed against the substructure ( 43 ) or the like, a passage opening ( 10 ) for a through-opening ( 10 ) with play-encompassing fastening member ( 11 ), a concave bearing surface ( 13 ) for receiving on the substructure ( 43 ) or the like surface ( 12 ) of the pot base ( 9 ) a convex complementary surface ( 14 ) having a lens ( 15 ) is arranged that on the glass segment ( 3 , 57 ) or plate segment facing surface ( 16 ) of the pot base ( 12 ) has a flat bearing surface ( 17 ) for supporting a flat one Bearing surface ( 18 ) send plano-concave lens ( 19 ) is arranged, on the concave surface ( 20 ) of a plano-convex lens ( 21 ) with its convex xen surface ( 22 ) and that the space joint is adjustable by means of a lock nut ( 23 ) which can be screwed to the fastening member ( 11 ). 8. Connecting bridge according to claims 1 and 7, characterized in that the glass segment ( 3 ) or plate segment element facing side of the pot-like base body ( 8 ) has a thread in which a thread ( 25 , 62 ) of the cable receptacle ( 52 , 58 ) is screwed in. 9. Connecting bridge according to one of claims 1 to 8, characterized in that in the support bearing ( 2 ) articulated gela ger fastening member ( 11 ) by means of fastening sleeve ( 26 ) is connected to the wall ( 47 ). 10. Connecting bridge according to claim 9, characterized in that the fastening sleeve ( 26 ) of the wall ( 47 ) has adjacent support plates ( 27 ). 11. Connecting bridge according to claim 7, characterized in that the fastening member ( 11 ) has a continuous axial Boh tion ( 54 ). 12. Connecting bridge according to one of claims 1 to 11, characterized in that the clamping fitting ( 6 ) has an inside clamping element ( 30 ) and an outside clamping element ( 31 ), the inside clamping element ( 30 ) on the glass wall segment ( 3 , 57 ) facing away from the outer surface ( 32 ) formed by a permanently elastic spring member ( 33 ) conical or spherical surface (outer surface 34 ) against which a complementary surface ( 35 ) of an inner shell of a throwing bell ( 36 ) can be adjusted with adjustable bias, where at the coupling bell (36) on their side facing the supporting structure (43) side, having a threaded (37) of a union nut (38) bordered cylindrical extension (39) and having between the coupling bell (36) and the union nut (38) radial clearance guided flange ( 40 ) of the connecting fork ( 41 ) of the bolt joint (connecting joint 5 ) can be clamped. 13. Connecting bridge according to one of claims 1 to 11, characterized in that the clamping fitting ( 6 ) has an inside clamping element ( 30 ) and an outside clamping element ( 31 ), the inside clamping element ( 30 ) facing away from the glass wall segment ( 3 ) Shell surface ( 32 ) has a conical or spherical surface (shell surface 34 ) formed by a permanently elastic spring member ( 33 ), against which a complementary surface ( 35 ) of an inner shell of a coupling bell ( 36 ) can be adjusted with an adjustable prestress, the coupling bell ( 36 ) on its side facing the substructure ( 43 ) has a threaded ( 37 ) provided with a union nut ( 38 ) cylindrical extension ( 39 ) and between the union bell ( 36 ) and the union nut ( 38 ) has a space joint ( 42 ) the connecting fork ( 41 ) is arranged. 14. Connecting bridge according to one of claims 1 to 13, characterized in that the connecting bridge ( 1 ) has four radially to the support bearing ( 2 ) extending support arms ( 4 ), each enclosing an angle of 90 ° between them. 15. Connecting bridge according to one of claims 1 to 13, characterized in that the connecting bridge ( 1 ) has three radially to the support bearing ( 2 ) extending support arms ( 4 ), each enclosing an angle of 90 ° between them. 16. Connecting bridge according to one of claims 1 to 13, characterized in that the connecting bridge ( 1 ) has two radially to the support bearing ( 2 ) extending support arms ( 4 ) which enclose a 90 ° angle between them. 17. Connecting bridge according to one of claims 1 to 13, characterized in that the connecting bridge ( 1 ) has a support arm ( 4 ) extending radially to the support bearing ( 2 ). 18. Connecting bridge according to the preceding claims, characterized in that the connecting bridge ( 1 ) consists of stainless steel, a titanium alloy or aluminum alloy. 19. Connecting bridge according to claims 1 and 8, characterized in that the cable receptacle ( 52 , 58 ) has an internal chamfer ( 24 ) at its free end. 20. Connecting bridge according to claims 1 and 8, characterized in that the cable receptacle ( 52 , 58 ) has a funnel-shaped end region ( 28 , 61 ). 21. Connecting bridge according to claims 19 and 20, characterized in that the cable receptacle ( 52 ) consists of a straight pipe. 22. Connecting bridge according to claims 19 and 20, characterized in that the cable receptacle ( 58 ) in its central loading area has a constriction ( 59 ) which includes a funnel-shaped course ( 61 ) at the free end and the central constriction ( 59 ) at the other end holds a funnel-shaped course ( 60 ), at the end of which there is a thread ( 62 ).