DE102004023412A1 - Electrical cable terminal has two in line cables connected and also has a cross cable connection using clamping screws - Google Patents

Abstract

The electrical terminal has a housing within which there is s metal bridging element [31]. Electrical cables [8,9] are interconnected by screws [51] that clamp onto the exposed ends. A third cable [1] is interconnected at right angles using a separate clamping screw [52].

Description

The The invention relates to a luster terminal block arranged with a variety of side by side electrically isolated electrically conductive luster terminals, being per luster terminal at least two electrical conductors via mechanical clamping elements electrically get connected.

Out the main catalog 2004, page 948, of the electronic mail-order company Conrad are u.a. such commercial wire nuts known. You can only with big Wiring effort can be used as a distributor. To do this from luster clamp to luster terminal U-shaped curved connecting wires by means of the located on one side of the luster terminal block Fixed clamping screws. In addition, this is half of all Terminal points consumed.

Of the The invention is therefore based on the problem of a luster terminal strip to create in a simple and secure way as a busbar or Distributor can be used.

The Invention is solved with the features of the main claim. To has the luster terminal strip at least one group of outdoors this strip lying Luster terminals, being per luster terminal at least one of these - across to the longitudinal direction the luster terminal block - traversing Recess is present. The recesses of the individual luster terminals aligned within the bar to each other. To every recess is at least one mechanical clamping element present, the clamping direction at least approximately transversely to the recess longitudinal direction is oriented.

With This invention is a luster terminal block created, in contrast to conventional luster terminal strips via luster terminals features, for example, between the two usual wire or Litzenanschlüssen a Have recess in the e.g. if necessary, a coupling element e.g. is inserted in the form of a wire or a stranded wire. Per Lüsterklemme can then be an electrically conductive connection between this coupling element and the individual luster terminal over pointed or clamping screws are made. The coupling element can here - ever by length - all or even a few luster terminals with each other connect.

In an embodiment variant the coupling element can be a short insulated or bare piece of wire, the laterally inserted into the recess of the luster terminals and is clamped there. The wire can in this case be a power supply lead wire be. Does he connect e.g. with a 12-pin luster terminal block all luster terminals, see above The result is a distributor with 24 connection options.

Of course you can the coupling element as an insulated conductor from the outset in the Luster terminal strip be inserted. When used as clamping elements e.g. Pointed screws used, The electrical connection is created by a simple donning these pointed screws.

It is possible, too every luster terminal for themselves to use as a terminal in the three different wires or bunch of wires can be connected separately.

Further Details of the invention will become apparent from the uncited dependent claims and the following description of schematically illustrated embodiments:

1 : Terminal block with an electrical cross-connection in longitudinal section;

2 : Top view to 1 ;

3 : Cross section to 1 in the region of a clamping element;

4 : Cross section to 1 in the area of the cross connection;

5 : Cross section through an element of the terminal block in the region of the cross connection without pointed screw;

6 : Top view to 5 ;

7 : Terminal strip with three electrical cross-connections in longitudinal section;

8th : Top view to 1 ;

9 : Side view of a clamping strip element with clamping spring;

10 : Cross section of a clamping strip element in the region of a resilient clamping element;

11 : Side view of a terminal strip element with unconfirmed coupling wire hanger;

12 : as 11 , but with actuated coupling wire strap.

The 1 to 4 show by way of example a section of a luster terminal strip ( 10 ). In 2 is a plan view of a group of two via connecting bridges ( 21 ) coupled luster terminals ( 30 ). The single luster terminal ( 30 ), see. 1 , for example, comprises a basic body ( 31 ), a plastic housing ( 11 ), two clamping screws ( 51 ) and a pointed screw ( 52 ).

The basic body ( 31 ) is an electrically conductive, for example multicolored metallic sleeve, which has a longitudinal bore ( 32 ) having. The cross section of the bore ( 32 ) does not necessarily have to be circular. Transverse to this longitudinal bore ( 32 ) are three threaded holes ( 34 ) whose center lines are located, for example, in one plane ( 35 ) lie. Transverse to the longitudinal bore ( 32 ) and normal to the plane ( 35 ) is a transverse bore ( 41 ) whose center line ( 42 ) the center line ( 33 ) of the longitudinal bore ( 32 ) cuts or crosses.

Instead of a continuous longitudinal bore ( 32 ) can also be used two short blind holes, each of the end faces ( 37 . 38 ) of the basic body ( 31 ) ago in the body ( 31 ) are incorporated.

In the middle threaded hole ( 34 ) is a pointed screw ( 52 ), while in the two outer threaded holes ( 34 ) each a clamping screw ( 51 ) sits.

The basic body ( 31 ) is replaced by a plastic housing ( 11 ) almost completely sheathed. No or only a partial casing is located at the end faces ( 37 . 38 ) of the basic body ( 31 ) in the area in front of the ends of the longitudinal bore ( 32 ). There is the plastic housing ( 11 ) over the main body ( 31 ) above. For the insulating sheathing of the clamping ( 51 ) or pointed screws ( 52 ) are around these screws ( 51 . 52 ) around tubular projections ( 14 ) are formed. To 5 are located on the inner wall of these approaches ( 14 ), for example, four stop webs ( 25 ). Each stop bridge ( 25 ) has an end face ( 26 ). On these faces ( 26 ), see. also 6 , are the heads of the pointed screws ( 52 ) with ready-made luster terminal strips ( 10 ) in a kind of parking position. The tips ( 55 ) of the pointed screws ( 52 ) have no contact with one in the transverse bore ( 41 ) lying coupling wire ( 1 ).

In the area of the transverse bore ( 41 ), see. 4 and 5 , the plastic housing is on both sides of the main body ( 31 ). To avoid direct contact of the main body ( 31 ) is on the plastic housing ( 11 ) around the transverse bore ( 41 ) at least partially an edge reinforcement ( 17 ) appropriate.

The connecting bridges ( 21 ) out 2 are part of the plastic housing ( 11 ). Each jetty ( 21 ) has a parallel to the threaded holes ( 34 ) running bore ( 22 ). This hole ( 22 ) is used both as a predetermined breaking point ( 23 ) when disconnecting a luster terminal ( 30 ) from the bar ( 10 ) as well as for attaching the strip ( 10 ) on the appropriate ground by means of screws, nails or the like.

In the in 2 shown luster terminal strip ( 10 ) are the luster terminals ( 30 ) by an insulated coupling wire ( 1 ) electrically connected. In the 1 is shown as the arranged in the Lustererklemmenmitte, screwed pointed screw ( 52 ) with its tip ( 55 ) the isolation ( 2 ) of the coupling wire ( 1 ) has displaced or penetrated. The summit ( 55 ) sits, for example, positively and positively in the coupling wire ( 1 ), so that the basic body ( 31 ) with the coupling wire ( 1 ) is electrically conductively connected, see. also 4 , Possibly. is used as a coupling wire a multi-core stranded wire.

The length of the pointed screws ( 52 ) is designed so that - despite a secure fit in its threaded hole ( 34 ) - its tip in parking position the envelope cylinder of the longitudinal bore ( 32 ) does not penetrate. An electrically conductive contact with an insulated coupling wire ( 1 ) is not possible.

In a fully screwed position of the pointed screw ( 52 ) the tip contacts the wall of the longitudinal bore ( 32 ) not at the moment. Consequently, by accidentally screwing in the pointed screw ( 52 ) the luster terminal ( 30 ) are not destroyed.

Are in a luster terminal block ( 10 ) all pointed screws ( 52 ) and tightened, the luster terminal strip ( 10 ) the function of a busbar. Is the luster terminal strip ( 10 ) are designed for receiving non-insulated coupling wires, instead of the pointed screws suitable clamping screws can be used, ie screws without a tapered tip.

Into the ends of the longitudinal bore ( 32 ) are, for example, in each basic body ( 31 ) the stripped ends of the connecting wires ( 8th . 9 ) and by means of the clamping screws ( 51 ) clamped electrically conductive. Again, the connection is usually positive and positive, see. also 3 , The connecting wires ( 8th . 9 ) are provided, for example, with insulation, wherein the end of the respective insulation, for example, in the region of the corresponding end faces ( 37 . 38 ) of the basic body ( 31 ) is located. Depending on the size of the luster terminal ( 30 ) can into the single end of the longitudinal bore ( 32 ) also several connecting wires are inserted and fixed.

The clamping screws ( 51 ) can also be fed to the connecting wires via spring 8th . 9 ) Act. These sheet metal tongues serve as wire protection. Instead of the clamping screws ( 51 ) can also be used other clamping or squeezing.

In the 7 and 8th is a luster terminal strip ( 71 ), for example, via three transverse bores for receiving coupling wires, such as a protective conductor ( 4 ), a neutral conductor ( 5 ) and an outsider ( 6 ). The protective conductor ( 4 ) is here by means of the pointed screw ( 52 ) with the basic body ( 31 ) electrically connected. The two other pointed screws ( 53 . 54 ) are in their parking position. Consequently, the connecting wires ( 8th . 9 ) only with the protective conductor ( 4 ) connected. Should now the outer conductor ( 6 ) with the connecting wires ( 8th . 9 ), instead of the pointed screw ( 52 ) the pointed screw ( 54 screwed in). In this way, the luster terminal strip ( 71 ) a small-volume, full-fledged AC distribution.

In order for such a luster terminal strip ( 71 ) a particular coupling conductor, here eg the outer conductor ( 6 ), only by the view of the bar ( 71 ), the outer contour ( 16 ) of the screw protection tube ( 15 ) a truncated pyramidal contour.

Possibly. can the luster terminal strip ( 71 ) between the externally seated clamping screws ( 51 ) receive a plurality of pointed screws to produce a kind of switching matrix in this way.

The 9 and 10 show a luster terminal ( 82 ), in which a non-insulated coupling wire ( 1 ) without pointed screw in the main body ( 31 ) is arranged electrically conductive. For this purpose is located in the transverse bore ( 41 ) a clamping spring ( 57 ). The transverse bore ( 41 ) has a cross-section composed of a rectangle and a semicircle. The clamping spring ( 57 ) is transverse to the longitudinal bore ( 32 ). It is bent U-shaped in the middle area. Their spring force counteracts the direction in which the out of the 1 and 4 known pointed screw ( 52 ) developed their clamping force.

With their ends the clamping spring ( 57 ) the basic body ( 31 ) in the region of the lower penetration edge ( 39 ) of the holes ( 32 ) and ( 41 ). Is no coupling wire ( 1 ) in the transverse bore ( 41 ), are the Klemmfederumgriffe ( 58 ) at the penetration edges ( 39 ) at. The coupling wire ( 1 ) is plugged into the transverse bore ( 41 ) assembled.

Another alternative for the electrical coupling of the luster terminals ( 83 ) within a luster terminal strip ( 73 ) is in the 11 and 12 shown. Here is an insulated coupling wire bracket ( 61 ) used in his in 11 shown position in the transverse bores ( 41 ) the basic body ( 31 ) is electrically isolated. For electrical connection of the base body with each other, the coupling wire bracket ( 61 ) In the exemplary embodiment pivoted by 90 degrees.

To enable this coupling, the insulated coupling wire bracket ( 61 ) an elliptical cross-sectional shape. The transverse bore ( 41 ) of the basic body ( 31 ) has a cross-section, the contour of which is the insulation ( 63 ) of the coupling wire bracket ( 61 ) cuts in the region of its largest diameter and displaced so far that there is the coupling wire bracket ( 61 ) in his ner 90 ° rotation in the body ( 31 ) - tilted to form an electrical connection.

The contour of the cross section consists of two at least approximately spiral ( 47 . 48 ) and four elliptical sections ( 43 - 46 ), wherein the similar subsections are point symmetrical opposite each other. The smallest diameter of the spiral sections ( 47 . 48 ) is slightly smaller than the largest diameter of the coupling wire hanger ( 61 ) in the uninsulated state.

The elliptical sections ( 43 - 46 ) form a secure stop for the coupling wire hanger ( 61 ) in the two in 11 and 12 positions shown.

The cross-section of the coupling wire hanger ( 61 ) can also be a polygon with three or more corners, so that a pivoting movement of 60 ° or less degrees to secure contact the body ( 31 ) is possible with each other.

To achieve the highest possible torsional stiffness, the coupling wire bracket ( 61 ) For example, made of a spring steel. At one end he is to form an operating lever ( 62 ) bent by 90 degrees, for example. Both ends of the coupling wire hanger are insulated, for example.

Of course, in a luster terminal strip ( 10 . 71 - 73 ) from, for example, twelve luster terminals ( 30 . 81 - 83 ) a coupling wire ( 1 . 61 ) are inserted so that it only a part of the luster terminals ( 30 . 81 - 83 ) connects with each other. Similarly, from each Lustererklemmenseite ago a separate coupling wire ( 1 . 61 ), where appropriate, between the mutually facing coupling wire ends some luster terminals ( 30 . 81 - 83 ) with none of the coupling wires ( 1 . 61 ) Has contact.

Depending on the design of the individual Lüsterklem menu bar ( 10 . 71 - 73 ), the recess longitudinal direction ( 42 ) not parallel or congruent to the longitudinal extent ( 29 ) be oriented. Also, the luster terminal strips ( 10 . 71 - 73 ) not necessarily rectilinear. Possibly. a luster terminal block can also have the shape of an open ring, with the individual center lines ( 33 ) of the holes ( 32 ) of the luster terminals ( 30 . 81 - 83 ) intersect eg in one point. The transverse bores ( 41 ) are cursing here on a circle.

1

Coupling element, Wire, wire

2

isolation

4

protective conductor

5

neutral

6

outer conductor

8th, 9

Connecting wires, electrical ladder

10

Terminal strip, Luster terminal strip

11

Plastic housing

14 15

Lugs, tubular; Screw thermowells

16

Outer contour of ( 14 )

17

edge reinforcement

18

recess

21

connecting webs

22

Steg hole

23

Steg breaking point

25

stop ridges

26

faces

29

Longitudinal extension longitudinal direction

30

Luster terminal, separately

31

body

32

longitudinal bore

33

center line

34

threaded holes

35

level the centerlines

37, 38

Front sides, faces

39

Durchdringungskante

41

Transverse bore recess

42

Centerline, Ausnehmungslängsrichtung

43 44

elliptical sections

45, 46

elliptical sections

47 48

spiral sections, clamping element

51

Clamping screws, clamping element

52-54

Pointed screw, clamping element

55

top

57

Spring clip, leaf spring, clamping element

58

Spring clip ends

61

Coupling wire bracket, coupling element, wire

62

Lever to 61 )

63

isolation

71

Luster terminal strip, transversely 3-pole

72

Luster terminal strip with spring clips

73

Luster terminal strip with coupling wire hanger

81

Luster terminal, transversely 3-pole

82

Lüsterklemme with spring clip

83

Lüsterklemme with coupling wire hanger

Claims (8)

Luster terminal block with a plurality of juxtaposed electrically insulated electrically conductive luster terminals, each per luster terminal at least two electrical conductors ( 8th . 9 ) via mechanical clamping elements ( 51 be electrically connected, characterized in that - at least one group of in the outer region of the luster terminal strip ( 10 . 71 - 73 ) lying luster terminals ( 30 . 81 - 83 ) per luster terminal ( 30 . 81 - 83 ) at least one of these luster terminals ( 30 . 81 - 83 ) - transverse to the longitudinal direction ( 29 ) of the luster terminal strip ( 10 . 71 - 73 ) - traversing recess ( 41 . 18 ), - that the recesses ( 41 . 18 ) within the bar ( 10 . 71 - 73 ) are aligned with each other, and - that to each recess ( 41 . 18 ) at least one mechanical clamping element ( 52 - 54 . 45 . 46 . 57 ) is present, the clamping direction at least approximately transversely to the recess longitudinal direction ( 42 ) is oriented. Luster terminal block according to claim 1, characterized in that at least in the recesses ( 41 . 18 ) of a group of adjacent luster terminals ( 30 . 81 - 83 ) a coupling element ( 1 . 61 ) is inserted. Luster terminal block according to claim 1, characterized in that the recesses ( 41 . 18 ) at least approximately parallel to the longitudinal direction ( 29 ) of the luster terminal strip ( 10 . 71 - 73 ) are oriented. Luster terminal block according to claim 1, characterized in that the individual luster terminal ( 30 . 81 - 83 ) a longitudinal bore ( 32 ) whose centerline ( 33 ) the center line ( 42 ) of the recess ( 41 ) crosses or cuts. Luster terminal block according to claim 1, characterized in that the individual clamping element ( 52 - 53 ) is a pointed screw. Luster terminal block according to claim 1, characterized in that the individual clamping element ( 57 ) is an elastic leaf spring. Luster terminal block according to claim 1, characterized in that the coupling element ( 1 . 61 ) one with an isolation ( 2 ) is jacketed coupling wire. Luster terminal block according to claim 1, characterized in that the coupling element ( 1 . 61 ) Part of the luster terminal strip ( 10 . 71 - 73 ).