DE10329772B4

DE10329772B4 - Cable connecting device

Info

Publication number: DE10329772B4
Application number: DE2003129772
Authority: DE
Inventors: Ralf Lange
Original assignee: Phoenix Contact GmbH and Co KG
Current assignee: Phoenix Contact GmbH and Co KG
Priority date: 2003-07-01
Filing date: 2003-07-01
Publication date: 2005-12-15
Anticipated expiration: 2023-07-02
Also published as: DE10329772A1

Abstract

Cable connection device for the electrically conductive connection of a preferably multi-core cable to an electrical device, with a cable connection component (2) and with a device connection component (3), wherein the cable connection component (2) has a union nut (4) and a wire receiving and a plurality of wire guide channels -guide part (5) and to the device connection component (3) comprises a contact elements having clamping and connection unit and a sleeve-shaped, with an internal thread of the union nut (4) corresponding external thread (6) provided terminal body (7) and wherein when screwing the nut ( 4) on the terminal body (7) the terminal and terminal unit contacts the conductors of the individual wires of the cable,
characterized,
a support and / or retaining element (8) extending in the axial direction and at a radial distance from the external thread (6) of the connection body (7) is formed on the connection body (7), and
in that on the outside of the wire receiving and guiding part (5) an engaging section for a tool, for example the tip (11) of a screwdriver, is formed,
so that the wire recording and ...

Description

The The invention relates to a cable connection device for electrical conductive connection of a preferably multi-core cable to an electrical device, with a cable connection component and with a device connection component, wherein to the cable connection component a union nut and a wire retainer having a plurality of wire guide channels. and guide part and to the device connection component a contact elements having clamping and connection unit and a sleeve-shaped, with a female thread of the union nut corresponding external thread belonged connecting body belong and when screwing the union nut on the connector body the clamping and connection unit contacted the conductors of the individual wires of the cable.

Such a cable connection device is for example from the DE 295 12 585 U1 known. The clamping and connecting unit is provided on the wire receiving and guide part facing side with insulation displacement terminals, on the other side with connecting elements, which is usually one piece executed metal parts on one side as insulation displacement terminals and on the other side are designed as connecting elements. In the known cable connection device, the contact elements are thus formed as insulation displacement terminals, wherein when screwing the union nut on the terminal body, the insulation displacement cut through the wire insulation of the wire ends and contact the conductors.

In addition, the contact elements can also be designed as contact pins, which contact the conductor of the individual wires of the cable when screwing the nut on the connector body, that either penetrate the tips of the pins from the front side into the wires or penetrate the insulation of the individual wires, like this for example, in the in the DE 100 20 191 C2 disclosed connector is the case.

following without the Invention limited thereto should be, mostly always assumed as insulation displacement terminals as contact elements.

following should be explained which of the terms used in the description of the first Prior art, then the invention have meaning or should have.

introductory is said that the Cable connecting device for electrically conductive connection of a cable to an electrical Device is determined. Here is electrical device to understand in general terms; in particular, should be included under the term electric device also electrical components, devices and devices fall. In the electrical device can For example, it is also a lamp or a lamp pan act.

The to the cable connection component belonging Coring pickup and guide part is usually Cable side with a receiving or insertion opening for the totality of all wires or with a number of receptacles corresponding to the number of cores or introduction openings for the provided individual cores. Furthermore is the wire pickup and guide part provided with the already mentioned wire guide channels. Indicates the wire reception and guide part cable side only a receiving or insertion opening, so branches this receiving or insertion opening then in the individual wire guide channels. is however, on the cable side, one corresponding to the number of wires to be inserted Number of receiving or insertion openings realized, then go to the individual receiving or insertion openings into the veining channels over.

The in the wire recording and guiding part realized vein guiding channels are considering the geometry, the arrangement and the formation of the contact elements the clamping and connection unit designed and led, that the contacting with the contact elements or of the contact elements to be clamped wire ends and the associated contact elements under the desired one Angles go. The angle between the with the insulation displacement terminals contacting or clamped by the insulation displacement ends and the associated cutting clamps can be both a sharper than also be a right angle; even an obtuse angle is not locked out. Accordingly, those who receive the veins, in the wire recording and guiding part provided wire guide channels against the insertion angled the cable. To easily redirect the wire ends during insertion to ensure, However, the angle should be less than 90 °.

As in the case of the cable connection device in question the union nut and the wire receiving and guide part represent the two essential functional elements of the cable connection component, form the sleeve-shaped, provided with an internal thread of the union nut corresponding external thread connecting body and provided with contact elements clamping and connection unit, the two essential Functional elements of the device connection component. In the screwed state, ie when the union nut is screwed onto the connector body, bil the union nut and the terminal body a closed housing, which receives and encloses the inner functional elements, namely the wire receiving and guiding part and the clamping and connecting unit.

The DE 202 18 418 U1 discloses a device for holding and for passing cables, lines, pipes or hoses, ie a cable bushing, which has a particularly trained anti-rotation. The DE 202 18 418 U1 thus does not disclose a cable connection device for the electrically conductive connection of a cable, but only a cable bushing, without any connection of the cable.

From the DE 202 17 501 U1 is a cable connection device described above known. This cable connection device has the object to provide a cable connection, in which the installation is easy even on vertical walls or overhead and can be tried with sufficient security before attaching the nut, whether the right wires or strands abut the associated contacts. To solve this problem, it is provided that a snap connection for axially fixing the wire receptacle is provided in the connecting body. This snap connection consists of a projection on the threaded sleeve and a resilient, in use position behind the projection snapping resilient portion of the wire receptacle.

At the time of the DE 295 12 585 U1 known cable connection device, the union nut and the wire receiving and guide part two individual parts that are not connected to each other. A connection is not allowed per se, because when screwing the union nut on the connector body, the wire receiving and guide part may not rotate or can not rotate. The unrealized connection has the consequence that when re-opening the terminal after unscrewing the union nut of the terminal body, the cable initially still connected or remains connected, because the insulation displacement terminals of the terminal and terminal unit the clamped conductors still "hold". It therefore needs to re-release the connection after unscrewing the union nut of the terminal body nor an additional loosening of the held by the insulation displacement conductor. This loosening can lead to damage to the contact connection between the contact elements and the conductors by excessive reciprocation of the cable.

The above-mentioned problem is in a cable connection device according to the DE 199 51 455 C1 achieved in that the wire-receiving and -führungsteil is axially fixed at least one slotted, resilient locking ring in the nut and that the wire receiving and guide member is rotatable in the axially fixed position relative to the nut. This has the advantage that the associated with the unscrewing of the nut from the terminal body axial relative movement between the nut and the connector body is also an axial relative movement between the wire receiving and -führungsteil and the connector body, which inevitably leads to the previously in the Disconnect cutting clamps clamped conductor. Is in the cable connection device according to the invention, as also realized in the prior art, the clamping and connection unit fixed in the connection or connection body, then there is a cable connection device, which - functionally - consists of only two components, namely the cable connection component on the one hand and the Device connection component on the other hand.

From the DE 100 58 158 A1 is a cable connection device known in which as a development of the DE 199 51 455 C1 known cable connection device of the locking ring is integrally formed with the wire receiving and guide part. This prevents that the locking ring can be lost during assembly. Thus, the circlip in spite of a lumpy training with the wire receiving and guide part has a certain mobility relative to the wire receiving and guide part, the locking ring is connected either via retaining webs or a movable film hinge with the wire receiving and guide part.

Even though the fixation of the wire-receiving and -führungsteils in the union nut certain advantages over the pure two-part design of union nut and core and guide part has, so has the fixation of the wire receiving and -führungsteils in the union nut but also some disadvantages, especially when re-releasing and Pulling out an electrical cable from the cable connection component. In particular, when the wire receiving and guiding part - as in the practice usual - beside the actual wire guide area also a strain relief and Has sealing area, there is a risk that due the formation of the strain relief and sealing area and its intentional interaction with the union nut pulling out of the electrical cable from the cable connection component through the fixation of the wire receiving and guiding part prevented in the union nut or at least made more difficult.

The cable connection device described above, in which the previously indicated problem is solved, is first characterized in that has been deliberately omitted a fixation of the wire receiving and -führungsteils in the union nut. The resulting "disadvantage" that when re-opening the terminal after unscrewing the nut from the terminal body, the cable still remains connected because the contact elements of the terminal and terminal unit the clamped conductors still "hold", is compensated according to the invention that on Terminal body is formed in the axial direction and at a radial distance from the external thread of the connector body extending support and / or retaining element, and that outside of the wire receiving and -führungsteil an engaging portion for a tool, such as the tip of a screwdriver, is formed, so that the wire receiving and guide part can be levered out with the aid of the tool from the terminal body, wherein the upper, free end of the support and / or retaining element serves as an abutment for the tool.

By the training and arrangement of the support and / or retaining element it is possible, the wire pickup and guide part with the aid of a tool, for example the tip of a screwdriver, herauszuhebeln from the terminal body, with the free End of support and / or Retaining element as an abutment for the tool is used. By the support and / or retention element, preferably in one piece formed with the terminal body is, thus, in a simple manner, a lever arm to remove of the wire receiving and guiding part from the connector body and thus to the redemption created the cable from the clamping and connecting unit.

to Simplification of the previously described "levering out" of the wire receiving and guiding part from the connector body and to prevent damage at the wire receiving and guiding part is provided that outside of the Coring pickup and guide part an attack section for a tool is formed. In this attack section can For example, it is one in the wire receiving and guiding part Trained groove act.

The provided according to the invention Support and / or Retaining element, which is formed approximately web-like, first - as described above - the function an abutment and thus the function of a support element for a Tool when "levering out" the wire retainer and -führungsteils off the connection body. According to one Particularly preferred embodiment of the cable connection device according to the invention has the support and / or retaining element about that In addition, a second function, namely the function of a retaining element for the union nut.

to Realization of the retention function of the support and / or retaining element is provided that at the side facing the device connection component in the assembled state the union nut, d. H. on open front, a circumferential collar and on the Facing connecting body Side of the support and / or retaining element a projection is formed. The circumferential collar on the union nut and the projection on the support and / or retaining element are designed so that a Unintentional removal of the union nut prevented by the connector body becomes. The collar and the projection thus prevent a complete unscrewing the union nut from the external thread of the connection body without further possible is. Rather, this is a - wanted - deflecting the corresponding elastic support and / or Retaining element required.

According to one further advantageous embodiment of the cable connection device according to the invention the person and / or retaining element trained projection one in Aufschraubrichtung the union nut rising on the connecting body slope on. This ensures that the screwing the nut on the external thread of the connector body - in contrast to unscrew - without further possible is because of the slope on the projection and the elasticity of the support and / or retaining element of this Screw on the union nut automatically deflected sufficiently.

According to one last advantageous embodiment of the cable connection device according to the invention, which are briefly mentioned here is to be, is in the mounted state of the device connection component pioneering side of the union of the union nut a gearing and on the collar-facing side of the projection of the support and / or retaining element a corresponding counter-toothing formed. This will the retention function of the support and / or retaining element still further improved, because then when the federal government and the projection with each other come into engagement, another screw movement of the nut is prevented.

in the individual, there are now a variety of ways, the cable connection device according to the invention to design and develop. This is referred to on the one hand to the claims subordinate to claim 1, on the other hand to the description of a preferred embodiment in connection with the drawing. In the drawing show
1 a side view of a cable connection device according to the invention,
2 a side view of the cable connection device according to 1 with unscrewed union nut,
3 a side view of the cable connection device according to 2 with partially levered wire receiving and guiding part,
4 a side view of a cable connection device according to 1 , with partially screwed union nut,
5 a view of the cable connection device with removed cap nut from diagonally below and
6 a perspective view of a wire receiving and - management part of the cable connection device according to the invention.
The 1 to 5 show a cable connection device 1 for electrically conductive connection of a multi-core - not shown here - cable to a - also not shown - electrical device, with a cable connection component 2 and with a device connection component 3 , The device connection component 3 may for example be screwed in a corresponding bore of the device housing. To the illustrated cable connection component 1 belongs a union nut 4 and one, especially in 6 illustrated, wire receiving and guiding part 5 while to the device connection component 3 a provided with insulation displacement terminals and terminal elements clamping and connecting unit and a sleeve-shaped, with an internal thread of the union nut 4 corresponding external thread 6 provided connection body 7 belong.
Both 1 and 4 is the union nut 4 completely or partially on the connector body 7 unscrewed while at the 2 . 3 and 5 the union nut 4 completely unscrewed. Here it is clear that the wire receiving and -führungsteil 5 in the illustrated cable connection device 1 or in the illustrated cable connection component 2 not in the union nut 4 is fixed. The union nut 4 and the wire pickup and lead part 5 are thus two items that are not connected to each other. This has the consequence already described at the outset that when re-opening the connection after unscrewing the nut 4 from the connector body 7 the - not shown here - cable and with the cable also the wire receiving and -führungsteil 5 in the connector body 7 is "held" so that the in 2 structure shown results.
Now to the wire pickup and guide part 5 and thus the cable from the connector body 7 or to solve from the terminal and terminal unit, is on the connector body 7 one in the axial direction and at a radial distance from the external thread 6 of the connection body 7 extending support and / or retaining element 8th educated. The upper end is used here 9 the support and / or retention element 8th that the end 10 of the connection body 7 slightly overhanging, as an abutment for the top 11 a screwdriver, with the help of the wire receiving and guiding part 5 from the connector body 7 can be "leveraged out", as in the 2 and 3 is shown. Of course, doing so instead of the top 11 a screwdriver and any other suitable tool for levering the wire receiving and -führungsteils 5 from the connector body 7 be used.
Out 6 It can be seen that to simplify the detachment of the wire receiving and -führungsteils 5 from the connector body 7 in the wire recording and guiding part 5 an accessible from the outside attack section in the form of a groove 12 is trained. In the groove 12 can do the top 11 of the screwdriver. Instead of in 6 shown groove 12 For example, the attacking section can also be formed by a protrusion under which then the tip 11 attach the screwdriver.
The support and / or retention element 8th In addition to the previously described function of an abutment or a support element for a tool when "levering out" of the wire receiving and -führungsteils 5 from the connector body 7 In addition, even the function of a retaining element, which will be described in more detail below. As in the 1 and 4 can be seen, the union nut 4 at the device connection component 3 facing side a circumferential collar 13 and the support and / or retention element 8th at its the connection body 7 facing side a projection 14 on. Again 1 can be removed, it comes when unscrewing the nut 4 from the connection body 7 after a relatively short distance to a stop of the covenant 13 at the projection 14 , The Bund 13 and the lead 14 thus prevent that a complete unscrewing the nut 4 from the external thread 6 of the connection body 7 "without further" is possible. The union nut 4 can only after a - wanted - deflection of the elastic support and / or retaining element 8th completely unscrewed.
While completely unscrewing the union nut 4 from the connector body 7 through the education of the federal government 13 and the projection 14 - intentionally - is impeded, should be a complete Screw on the union nut 4 on the connector body 7 without further possible. For this purpose, the projection 14 one in the screw R of the union nut 4 rising slope 15 on. This results when the union nut is screwed on 4 automatically the required slight deflection of the support and / or retaining element 8th so that the covenant 13 at the projection 14 can be passed. In addition, the federal government points 13 the union nut 4 another as a Rastranz 16 trained gearing and the projection 14 one as a ratchet tooth 17 trained counter-payment on. As a result, the retaining function of the support and / or retaining element 8th even further improved, because then when the federal government 13 and the lead 14 when unscrewing the union nut 4 engage each other, another screw movement of the nut 4 is prevented.
The previously described function of a retaining element of the support and / or retaining element 8th moreover has the advantage that when screwing the nut 4 on the connector body 7 a backup position is given, in which the cable is not yet fully connected, but no longer - unintentionally - can be solved. This securing position is given when the union nut 4 so far on the connector body 7 is screwed on that the covenant 13 at the projection 14 passed by.
The wire receiving and guiding part 5 shows how this particular from the 6 results in two areas, namely a wire guide area 18 and a strain relief and sealing area 19 , In the wire guide area 18 the wire guide channels are provided for the individual wires. In addition, at the wire guide area 18 Stege 20 provided with corresponding grooves in the connecting body 7 cooperate and serve as coding when connecting the wires to the terminal and terminal unit. By thus realized coding ensures that in the wire receiving and -führungsteil 5 trained groove 12 always to support and / or retaining element 8th is aligned. The strain relief and sealing area 19 has a plurality of annularly arranged blades 21 on, on which inside a not shown here sealing ring is present. The slats 21 work together with an inside of the union nut 4 provided bevel as so-called PG-gland, so that when screwing the nut 4 on the connector body 7 the slats 21 pressed against the sealing ring, thereby resulting in a seal towards the cable out. At the same time this results in a strain relief for the cable.
In particular, when the wire receiving and guiding part 5 Such a strain relief and sealing area 19 has, in the known cable connection devices, in which the wire receiving and - guide part is fixed in the union nut, the problem that due to the fixed position of the wire receiving and -führungsteils in the union nut, the slats after unscrewing the nut of the Can not open connector body so far that the cable can be pulled out of the cable connection component. Characterized in that in the cable connection device according to the invention 1 the union nut 4 not with the wire pickup and lead part 5 is connected, the problem described above does not occur. Rather, after unscrewing the nut 4 and then levering out the wire receiving and guiding part 5 from the connector body 7 the slats 21 open unhindered so that the cable can be pulled out.
In 6 is finally still recognizable that the wire pickup and guide part 5 with cuts 22 which is located in the interior of the wire receiving and guiding part 5 protrude. When connecting cable connection component 2 and device connection component 3 , so when screwing the nut 4 on the connector body 7 , penetrate the - not shown here - insulation displacement terminals in the in the wire receiving and -führungsteil 5 provided incisions 22 penetrate the wire insulation of the individual wires of the cable and then contact the individual conductors.

Claims

Cable connection device for the electrically conductive connection of a preferably multi-core cable to an electrical device, with a cable connection component ( 2 ) and with a device connection component ( 3 ), wherein to the cable connection component ( 2 ) a union nut ( 4 ) and a wire receiving and guiding part having a plurality of wire guide channels ( 5 ) and to the device connection component ( 3 ) a contact elements having clamping and connecting unit and a sleeve-shaped, with an internal thread of the union nut ( 4 ) corresponding external thread ( 6 ) provided connection body ( 7 ) and when screwing the union nut ( 4 ) on the connector body ( 7 ) the clamping and connecting unit contacts the conductors of the individual wires of the cable, characterized in that on the connecting body ( 7 ) in the axial direction and at a radial distance from the external thread ( 6 ) of the connector body ( 7 ) extending support and / or retaining element ( 8th ) is formed, and that outside of the wire receiving and guiding part ( 5 ) an attacking section for a tool, for example the tip ( 11 ) a screwdriver, ausgebil is det, so that the wire receiving and guiding part ( 5 ) with the aid of the tool from the connector body ( 7 ) can be levered out, wherein the upper, free end ( 9 ) of the support and / or retention element ( 8th ) serves as an abutment for the tool.
Cable connection device according to claim 1, characterized in that the support and / or retaining element ( 8th ) integral with the connector body ( 7 ) is trained.
Cable connection device according to claim 1 or 2, characterized in that the upper, free end ( 9 ) of the support and / or retention element ( 8th ) of the union nut ( 4 ) facing end ( 10 ) of the connector body ( 7 ) something overshadowed.
Cable connection device according to one of Claims 1 to 3, characterized in that in the wire receiving and guiding part ( 5 ) a groove ( 12 ) is formed, which serves as an attack section.
Cable connection device according to one of Claims 1 to 4, characterized in that, on the device connection component (in the mounted state, 3 ) facing side of the union nut ( 4 ) an encircling collar ( 13 ) and at the terminal body ( 7 ) facing side of the support and / or retaining element ( 8th ) a lead ( 14 ) is trained.
Cable connection device according to claim 5, characterized in that the projection ( 14 ) one in the screwing (A) of the union nut ( 4 ) rising slope ( 15 ) having.
Cable connection device according to claim 5 or 6, characterized in that on the in the assembled state of the device connection component ( 3 ) groundbreaking side of the federation ( 13 ) of the union nut ( 4 ) a gearing and at the federal ( 13 ) facing side of the projection ( 14 ) of the support and / or retention element ( 8th ) is formed a corresponding counter-toothing.
Cable connection device according to claim 7, characterized in that the toothing as locking ring ( 16 ) and the counter-toothing as a ratchet tooth ( 17 ) is trained.
Cable connection device according to one of Claims 1 to 8, characterized in that the clamping and connection unit has insulation-piercing terminals and connection elements, wherein the wire ends to be contacted with the insulation displacement terminals or clamped by the insulation displacement terminals and the associated insulation displacement terminals extend at an angle of less than 180 ° and when screwing on the union nut ( 4 ) on the connector body ( 7 ) the insulation piercing terminals cut through the wire insulation of the wire ends and contact the conductors.
Cable connection device according to one of Claims 1 to 9, characterized in that the wire receiving and guiding part ( 5 ) a strain relief and sealing area ( 19 ) with a plurality of annularly arranged lamellae ( 21 ) and the union nut ( 3 ) has on the inside a plurality of ribs, wherein in the assembled state of wire receiving and -führungsteil ( 5 ) and union nut ( 3 ) the slats ( 21 ) and the ribs interact.