DE102008019764A1 - Cable connector plug for electrical connection of multi-core cable to connection device of electrical distributor, has spring legs contacting insulation displacement terminals on flat sides during connection of plug with connection device - Google Patents

Abstract

The plug (1) has multiple contact elements provided with an insulation displacement terminal and a connection element i.e. contact spring. A capsule-shaped connection body (10) has external threads (9) that correspond to an internal thread of an union nut (5). The contact spring has two spring legs lying opposite to each other. The spring legs contact individual insulation displacement terminals on flat sides lying opposite to each other during connection of plug with a connection device. The terminals are connected to the connection device by a bus bar that is molded of plastic. An independent claim is also included for an electrical distributor comprising a housing.

Description

The The invention relates to a cable connector for electrical Connecting a multi-core cable to a plurality of insulation displacement terminals having connecting device of an electrical distributor. In addition, the invention also relates to an electrical distributor for distributing electrical currents.

From the DE 101 39 202 B4 an electrical distributor for distributing electrical currents is known, which has a housing with a plurality of terminal devices, wherein the individual terminal devices each terminal side have a cylindrical threaded extension with an external thread and in the terminal devices are each arranged a plurality of cutting terminals formed as connecting elements. The insulation displacement terminals of individual connection devices are electrically connected to each other by means of a connecting element. According to one embodiment, the connecting elements are designed as busbars, wherein the busbar associated cutting terminals are integrally connected to the busbar.

To the Connecting a multi-core electrical cable to a Connecting device of the electrical distributor is the Cable by means of a coupling element having a union nut screwed on the external thread of a threaded attachment. The Connecting element is designed so that when screwing the union nut on the threaded approach the cutting clamps in the connecting device, the wire insulation of the wire ends cut through and contact the conductors of the cable.

A connecting element, with which the connection of a multicore cable to a connecting device of the electrical distributor can be made particularly easily, is in the DE 198 36 622 A1 described as a cable connection component. The known cable connection component, which is part of a cable connection device, has, in addition to the union nut, a core receiving and guiding part having a plurality of wire guide channels. The from the DE 198 36 622 A1 Known cable connection device has in addition to the cable connection component nor a device connection component, which consists essentially of a male thread having a connector body and a plurality of arranged in the connector body and held terminal units. The terminal units are formed on the cable connection component side facing as insulation displacement terminals. A similar cable connection component or a similar cable connection device is also from the Where 97/06580 A1 known.

The well-known cable connection device is a plug with quick connection technology, which has already proven extremely successful in practice and is sold extensively by the applicant under the trademark QUICKON ^® . An electrical distributor in the form of a sensor-actuator box with such a quick-connection technology is for example from the prospectus "Industrial plug PLUSCON 2002", page 48 of Phoenix Contact GmbH & Co. KG known.

Thereby, that in the sensor actuator box, the device connection component is integrated with the insulation displacement terminals, the connection of a Cable can be done very easily and quickly because the individual wires of the cable for connection need not be stripped. The individual wires only have to go into the individual wire guide channels of the - often also referred to as splice - wire recording and Guide part are inserted, wherein when screwing the union nut on the housing of the sensor actuator box trained thread approach the wires in the individual insulation displacement terminals be pressed so that the insulation displacement terminals Cut through the core insulation and contact the conductors of the cable.

adversely in the known electrical distributors with cutting connection technology However, it is that after disconnecting a connected Cable is usually required, the ends of each wire cut off before the cable can be reconnected. This is especially necessary when connected to the electrical distributor high demands are placed on the degree of protection, because the electrical distributor of high humidity or water spray is exposed. Must have the ends of each vein already have been severed by the cutting clamps, before the renewed Connecting the cable will be cut off, so leads this leads to a shortening of the cable, which at one already existing wiring can cause problems.

Of the The invention is therefore based on the object, the aforementioned disadvantages to avoid and give a solution, due to that too the loosening and reconnection of a multi-core cable to a connection device of an electrical distributor with quick connection technology is possible without that before re-connecting the electrical cable the ends the individual wires must be cut off.

This object is achieved by a cable connector described above, a union nut, a plurality of wire guide channels exhibiting wire receiving and guiding part, a plurality of each provided with a cutting terminal and each with a connecting element Kon Having clocking elements and a sleeve-shaped, provided with an internal thread of the union nut corresponding external thread connecting body. When screwing the union nut onto the connector body, the insulation displacement terminals of the conductor ends and contact the individual conductors of the cable.

In order to the cable connector with the insulation displacement terminals of the connection device an electrical distributor can be connected, are the connection elements the contact elements according to the invention as contact springs formed, each at least two each other substantially have opposite spring legs. When connecting the cable connector with the connection device an electrical distributor contact the spring legs of the individual contact springs on each insulation displacement terminals respectively their opposite flat sides, d. H. the Spring legs are pushed onto the insulation displacement terminals.

Of the Cable connector according to the invention thus represents an adapter, on the one side a multi-core cable in the known cutting connection technology can be connected, d. H. for connecting the cable to the cable connector, the individual must Wires of the cable should not be stripped. On the other hand can the cable connector by the fact that the Connection elements are designed as contact springs, according to Art an electrical plug connection simply with the insulation displacement terminals connected to the connection device of an electrical distributor become.

Has to be already connected electrical cable again from the electrical Distributor are separated, so is simply the cable connector detached from the terminal device, wherein the contact springs be removed from the insulation displacement terminals. In contrast, the electric Connection of the individual wires of the cable with the cable connector not solved, so that the individual veins too do not have to be pulled out of the insulation displacement terminals. Should the cable be reconnected to the electrical distributor be, then the cable connector is simply again connected to the connecting device without this the individual wires of the cable again to the cable connector must be connected. As a result, it is too not necessary, the ends of the individual wires before the renewed Disconnect the cable.

The individual contact elements are then particularly simple and thus also inexpensive to produce, if the contact elements made of a single piece of metal, in particular punched out and bent. For that reason, it is beneficial if the cutting clamp and the contact spring in one piece connected to each other. The contact spring can thereby be made very easy, that they are three together having connected spring legs, which are bent so that the middle spring legs a cutting clamp on the one flat side and the two outer spring legs the cutting clamp contact on the opposite flat side. Around to simplify the sliding of the contact spring onto a cutting clamp, the ends of the spring legs are bent outwards. This results in a kind of leadership of the contact spring when pushing on the cutting clamp instead.

before has been stated that the cable connector with the connection device of an electrical distributor is connected. To ensure a secure mechanical connection between the cable connector and the connector to ensure is in accordance with an advantageous Embodiment of the invention on the connector body a sleeve having an internal thread rotatably and axially limited slidably disposed on one of the terminal device the external distributor formed by the electrical distributor can be screwed on. In addition to the safe and when using appropriate sealing elements also tight connection between the cable connector and the distributor has the formation of having an internal thread Sleeve on the connector body above addition, the advantage that the cable connector can be connected to a known distributor.

In the from the DE 101 39 202 B4 known electrical distributor can thus be simply screwed instead of the connecting element described there on the threaded extension of a connecting device of the cable connector according to the invention. The user thus has the opportunity to connect a multi-core cable either directly by means of a union nut and a splice member having connecting element or indirectly via the cable connector to a terminal device of the electrical distributor.

According to a further advantageous embodiment of the cable connector according to the invention a plurality of ribs are formed in the connecting body, which do not laterally cover the insulation displacement terminals. The ribs are arranged and designed such that the insulation displacement contacts are safe against contact. In the known Schneidanschlußtechnik the problem is that the arranged in the terminal body cutting clamps functionally necessary from the front page must be freely accessible, so when screwing the nut on the terminal body, the insulation displacement terminals of the wire ends cut and contact with the conductors. However, there is a risk that a user with a finger engages in the connector body and touches the insulation displacement terminals. Since the contact elements and thus also the insulation displacement terminals can be live parts, contact protection, a so-called finger contact protection, especially at voltages of 60 V and more, is absolutely necessary.

The desired contact protection safety can in particular be achieved in that the extension of the ribs in the axial direction larger than the extension the insulation displacement terminals in the axial direction. The intrusion of a Fingers in the upwardly open sleeve-shaped Terminal body is thus through the upper end limited to the ribs, without this being a lateral Covering the insulation displacement terminals is required, which is the introduction of the Wires into the insulation displacement terminals would make it more difficult.

Of the desired finger-touch safety also serves a further advantageous embodiment of the invention Cable connector, after which on the connector body a plurality of webs surrounding the contact springs on at least two sides are formed, which are arranged and formed such that the Contact springs are safe to touch. Through the training the webs surrounding the contact springs are thus ensured that a user with one finger is not in the opposite Direction to the cutting terminals extending contact springs touched. By the formation of the ribs and the webs can thus be achieved that the possibly live contact elements can not be touched by a user, during their intended function, d. H. the contact the wires on the one hand and the insulation displacement terminals of a connecting device of a electrical distributor on the other hand not affected becomes.

According to one Another advantageous embodiment of the invention is at least a web surrounding a contact spring is designed as a coding element, that with one in the connecting body of the electric Distributor trained Gegencodierelement cooperates. Thereby can be a prescribed assignment of the individual contact elements the cable connector and thus also the individual Wires to the insulation displacement terminals of an electrical distributor ensured become. The coding can preferably be realized thereby, that the individual webs different shapes or contours have, in particular at least one web on a protruding Codiersteg is formed.

The The aforementioned object is in an electrical distributor for Distributing electric currents according to the Claim 10 thereby solved that on the Thread approaches of the individual connection devices in each case an inventive cable connector screwed with a female thread having a sleeve is. Regarding the advantages of such an electrical Distributor is to the previously made comments too the cable connector of the invention directed.

According to one preferred embodiment of the electrical distributor are the connecting elements each formed by a busbar and a busbar associated insulation displacement terminals integral with the busbar educated. By such a one-piece design The insulation displacement with the busbar is both their production as stamped and bent parts as well as their arrangement in the electrical Distributor particularly easy to carry out.

Preferably are the individual busbars encased in a plastic, whereby a secure insulation of individual busbars against each other as well as a safe and permanent positioning of the busbars and thus also arranged on the busbar insulation displacement terminals is guaranteed. Then you can the preassembled busbars either in the housing be inserted or fastened, in which case the housing preferably consists of two housing parts, or the housing is formed by re-encapsulation of the preassembled busbars.

in the individual there are now a variety of ways the cable connector of the invention or to design and further develop the electrical distributor. For this purpose, both on the claims 1 and 10 subordinate claims as well as the following Description of a preferred embodiment below Referenced reference to the drawing. In the drawing show

1 a perspective view of a cable connector,

2 an exploded view of the cable connector according to 1 .

3 the cable connector according to 1 , in longitudinal section,

4 an electrical distributor with a screwed cable connector,

5 the cable connector from the side facing the electrical distributor,

6 a part of the electrical distributor according to 4 from the side facing the cable connector,

7 a contact element of a cable connector and a busbar with two insulation displacement of the electrical distributor and

8th the preassembled busbars of the electrical distributor with the contact elements of a cable connector, in the plugged state.

The 1 to 3 show a cable connector 1 for the electrical connection of a - not shown here - four-wire cable to a cutting clamps 2 having connecting device 3 one in 4 illustrated electrical distributor 4 ,

To the cable connector 1 heard first a union nut 5 , a wire receiving and guiding part 6 , four contact elements 8th , Which on their side facing the cable to be connected each have a cutting clamp 7 and a terminal body 10 , with an external thread corresponding to the internal thread of the union nut 9 , To connect a cable to the cable connector 1 First, the union nut 5 pushed over the cable insulation freed end of the cable. Subsequently, the individual wires in the wire guide channels of the wire receiving and -führungsteils 6 introduced, so that then when screwing the nut 5 on the connector body 10 the wires in the insulation displacement terminals 7 be pressed, causing the insulation displacement terminals 7 Cut through the core insulation and contact the conductors of the cable.

On the side facing away from the cable to be connected are the contact elements 8th as contact springs 11 formed, each three spring legs 12 have, when connecting the cable connector 1 with a connection device 3 of the electrical distributor 4 the individual insulation displacement terminals 2 on their opposite flat sides 13 . 13 ' to contact. As in particular from 7 can be seen, are the insulation displacement terminal 7 and the contact spring 11 integral with each other, ie the contact element 8th is punched out of a single piece of metal and bent. The three spring legs 12 are bent so that the middle spring leg, the cutting clamp 7 on the one flat side 13 and the two outer spring legs the cutting clamp 7 on the opposite flat side 13 ' to contact.

To postpone the contact spring 11 on the insulation displacement terminal 7 To facilitate, the ends of the spring legs 12 bent outwards, so that the contact spring 11 overall is approximately tulip-shaped. In the connection area between the insulation displacement terminal 7 and the contact spring 11 is a tongue 14 punched out and bent inside the connector body 10 latched so that the contact element 8th with the tongue 14 when pressing a wire into the insulation displacement terminal 7 at the connection body 10 supported, whereby the connection forces acting in the axial direction can be accommodated.

For mechanical attachment of the cable connector 1 with a connection device 3 is at the connection body 10 an internal thread 15 having sleeve 16 rotatable but only limited axially displaceable arranged. This is the connection body 10 a circumferential abutment shoulder formed by that of the connecting device 3 opposite end of the sleeve 16 is overruled. The sleeve acting as a union nut 16 can thus for secure mechanical attachment of the cable connector 1 on the external thread 17 a connection device 3 be screwed on.

How rudimentary 2 can be seen are to ensure finger-touch safety in the connector body 10 four ribs 18 formed, with the ribs 18 in the axial direction, a greater extension than the insulation displacement terminals 7 exhibit. This ensures that when entering a finger from the open end into the sleeve-shaped connector body 10 an unintentional contact with the possibly live insulation displacement terminals 7 is prevented.

The same function as the ribs 18 serve on the opposite side of the connector body 10 trained bridges 19 , each having a substantially U-shaped base, so that the webs 19 the contact springs 11 enclose on three sides. As in particular from 5 it can be seen, the individual webs have 19 different shapes, so that the webs 19 also act as coding, with in the connection device 3 of the electrical distributor 4 cooperate trained Gegenkodierelementen. This is on at least one bridge 19 a coding rib 20 formed, with the correct orientation of the cable connector 1 to the connection device 3 in one in the connection device 3 trained coding groove 21 intervenes.

The total in 4 illustrated electrical distributor 4 has an H-shaped housing 22 on, at the four connection devices 3 are formed. The individual connection devices 3 have connection side each have a cylindrical threaded neck 23 with an external thread 17 on top of that the sleeve 16 of the cable connector 1 can be screwed on. In the individual connection device gene 3 each are four insulation displacement terminals 2 arranged, with the insulation displacement terminals 2 from each other different terminal devices 3 over a power rail 24 are interconnected, as in 7 is shown in the beginning. It is in the 7 only part of a busbar 24 represented, via the two cutting clamp 2 from two different connection devices 3 connected to each other. Since the electrical distributor shown in the figures 4 a total of four connection devices 3 have, are over a power rail 24 one insulation displacement terminal each 2 of the four connection devices 3 ie a total of four insulation displacement terminals 2 connected with each other.

Should one with the cable connector 1 connected four-wire cable to one of the four connection devices 3 of the electrical distributor 4 be connected, so is the first of the webs 19 formed end of the connector body 10 in the thread approaches 23 plugged in, with those of the webs 19 surrounded contact springs 11 on the thread approach 23 arranged cutting clamps 2 be plugged. As a result, the individual wires of the cable to be connected via the contact elements 8th with the individual insulation displacement terminals 2 the connection device 3 electrically connected. For safe mechanical connection of the cable connector 1 at the connection device 3 or on the electrical distributor 4 is closing the sleeve 16 on the at the thread approach 23 trained external thread 17 screwed.

Replace the electrical cable from the electrical distributor 4 be disconnected, so first the screw between the sleeve 16 and the thread approach 23 be solved. Then the cable connector 1 simply from the threaded neck 23 be pulled out, at the same time the contact springs 11 from the insulation displacement terminals 2 subtracted from. Because the electrical cable over the insulation displacement terminals 7 on the cable connector 1 is connected to re-connect the cable to the electrical distributor 4 cutting the ends of the individual wires of the cable is not required; the cable connector 1 just has to go back to the threaded neck 23 plugged in and with the help of the sleeve 16 be screwed.

To a deliberate touch of the possibly live cutting clamps 2 the connection devices 3 are also in the threaded lugs 23 several of the insulation displacement terminals 2 laterally non-covering ribs 25 The same as contact protection for the insulation displacement terminals 2 the connection device 3 serve like the ribs 18 in the connection body 10 with respect to the insulation displacement terminals 7 , Ribs 25 are arranged and designed so that they are the intentional insertion of the webs 19 of the connection body 10 in the thread approach 23 and thus the attachment of the contact springs 11 on the insulation displacement terminals 2 do not interfere, accidentally touching the insulation displacement terminals 2 with a user's finger, however, is prevented.

Finally is off 8th recognizable that the individual cutting clamps 2 interconnecting busbars 24 of plastic 26 are encapsulated, so that a secure insulation of the individual busbars 24 is guaranteed against each other. The so preassembled or overmolded busbars 24 can then be re-inserted in an injection mold to the housing 22 of the electrical distributor 4 to shape. Alternatively, the overmolded busbars 24 with the integrally formed cutting clamps 2 also be inserted into the housing and fastened therein, wherein the housing 2 then preferably consists of two housing parts.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10139202 B4 [0002, 0015]
• - DE 19836622 A1 [0004, 0004]
• WO 97/06580 A1 [0004]

Cited non-patent literature

• - "Industrial plug PLUSCON 2002", page 48 of Phoenix Contact GmbH & Co. KG [0005]

Claims (13)

Cable connector for the electrical connection of a multi-core cable to a plurality of insulation displacement terminals ( 2 ) having connecting device ( 3 ) of an electrical distributor ( 4 ), with a union nut ( 5 ), with a plurality of wire guide channels having wire receiving and guiding part ( 6 ), with several, each with a cutting clamp ( 7 ) and each contact element provided with a connecting element ( 8th ) and with a sleeve-shaped, with an internal thread of the union nut ( 5 ) corresponding external thread ( 9 ) provided connecting body ( 10 ), whereby when screwing on the union nut ( 5 ) on the connector body ( 10 ) the insulation displacement terminals ( 7 ) sever the wire insulation of the wire ends inserted in the wire guide channels and make contact with the conductors of the cable, and wherein the connecting elements act as contact springs ( 11 ) are formed, each having at least two mutually substantially opposite spring legs ( 12 ), which when connecting the cable connector ( 1 ) with a connection device ( 3 ) of the electrical distributor ( 4 ) the individual insulation displacement terminals ( 2 ) on the opposite flat sides ( 13 . 13 ' ) to contact. Cable connector according to claim 1, characterized in that the contact springs ( 11 ) three interconnected spring legs ( 12 ) exhibit. Cable connector according to claim 1 or 2, characterized in that the ends of the spring legs ( 12 ) are bent outwards. Cable connector according to one of claims 1 to 3, characterized in that on the connector body ( 10 ) an internal thread ( 15 ) sleeve ( 16 ) is rotatably and axially limited slidably disposed on a on a terminal device ( 3 ) of the electrical distributor ( 4 ) formed external thread ( 17 ) can be screwed on. Cable connector according to one of claims 1 to 4, characterized in that in the connector body ( 10 ) several the insulation displacement terminals ( 7 ) not laterally covering ribs ( 18 ) are formed, wherein the ribs ( 18 ) are arranged and formed such that the insulation displacement terminals ( 7 ) are safe to touch. Cable connector according to one of claims 1 to 5, characterized in that on the Anßschlußkörper ( 10 ) several the contact springs ( 11 ) on at least two sides surrounding webs ( 19 ) are formed, wherein the webs ( 19 ) are arranged and formed such that the contact springs ( 11 ) are safe to touch. Cable connector according to claim 6, characterized in that the webs ( 19 ) have a substantially U-shaped base so that they the contact springs ( 11 ) surrounded on three sides. Cable connector according to claim 6 or 7, characterized in that at least one web ( 19 ) acts as a coding element which is connected to a in the terminal device ( 3 ) of the electrical distributor ( 4 ) formed Gegencodierelement cooperates. Cable connector according to claim 8, characterized in that the individual webs ( 19 ) have different shapes or contours, in particular at least one web ( 19 ) a protruding coding rib ( 20 ) having. Electric distributor for distributing electrical currents, comprising a housing ( 22 ) and at least two connection devices ( 3 ), wherein the connection devices ( 3 ) each have a cylindrical threaded projection ( 23 ) with an external thread ( 17 ) and several insulation displacement terminals ( 2 ) and the insulation displacement terminals ( 2 ) of different connection devices ( 3 ) are interconnected by means of a connecting element assigned to them, characterized in that the thread projections ( 23 ) of the individual connection devices ( 3 ) in each case a cable connection plug ( 1 ) according to one of claims 4 to 9 with its sleeve ( 16 ) is screwed on. Electrical distributor according to claim 10, characterized in that the connecting elements each consist of a bus bar ( 24 ) are formed and that a respective busbar ( 24 ) associated cutting terminals ( 2 ) in one piece with the busbar ( 24 ) are formed. Electrical distributor according to Claim 11, characterized in that the individual busbars ( 24 ) of plastic ( 26 ) are sprayed over. Electrical distributor according to one of Claims 10 to 12, with four connection devices ( 3 ), characterized in that the housing ( 22 ) has a substantially H-shaped configuration.