EP2084784A2

EP2084784A2 - Plug connector, particularly for sensor-/actuatorlines

Info

Publication number: EP2084784A2
Application number: EP07820362A
Authority: EP
Inventors: Jörg Diekmann; Ralf Schumacher; Klaus Püschner; Siegfried Storm; Thomas Tappe; Michael Schnatwinkel; Renè MEIER; Walter Hanning; Michael Meyer; Michael Höing
Original assignee: Weidmueller Interface GmbH and Co KG
Current assignee: Weidmueller Interface GmbH and Co KG
Priority date: 2006-11-02
Filing date: 2007-09-19
Publication date: 2009-08-05
Also published as: WO2008052845A3; DE202006018019U1; WO2008052845A2; TW200838061A

Abstract

The invention relates to a plug connector (1), comprising a first plug connector part designed as a plug part (2), and a second plug connector part (3) designed as a socket part (3), wherein at least one of the plug connector parts is designed for connecting a cable (7) with at least one or preferably several insulated conductors (19) embedded in a cable sleeve. The plug connector part (2) comprises at lest one or several insulation-piercing contacts (17) per conductor (19) and an actuating element (12) for contacting the conductors with the insulation-piercing contacts (17). The actuating element (12) comprises at least one or several accommodating contours (25) for accommodating the conductors, having a tapered shape for centering the conductor (19) to be contacted.

Description

Plug connection, in particular for sensor / actuator cables

The invention relates to a connector according to the preamble of claim 1.

The generic connector according to the prior art has two corresponding connector parts, one of which is designed as a plug part, which is mated with a corresponding socket part. Preferably, at least one of the connector parts is designed for connection of multi-core sensor / actuator cables.

The plug part or the socket part can be designed in each case for connection to such multi-core cable. Alternatively, it is conceivable that either the male part or - preferably - the female part directly into a housing of an electrical device - such as a distributor - used or is molded onto this.

According to one aspect of the invention, at least one of the connector parts of the connector is to be designed such that it can be used to connect conductors of a relatively large diameter range while realizing a relatively simple structural design using insulation-piercing terminal contacts.

The invention solves this problem by the subject matter of claim 1 and claim 2, each of which represents an invention in itself, but also develop in combination a particularly advantageous inventive effect.

Advantageous developments are specified in the subclaims.

The invention provides the claim 2 creates a connector with two connector parts, of which at least one or both by the clever arrangement of isolationsdurchtrennenden contacts - very particularly beneficial supported by the advantageous realization of the possibility for conductor centering specified in claim 1 - is designed such that conductors of relatively different diameters can be contacted, without having to store the different connector diameters for these different conductor diameters, as was the case in the prior art. This reduces the number of variants required according to the prior art.

The connector part can be realized in a wide variety of protection class, with a relatively low level of protection such as IP20 represents a first area of application.

According to a further aspect, on the one hand represents a development of the invention described above and on the other hand is to be regarded as an independent invention, it should also be possible, the connector without a structural change in the connector parts using simple and easy to handle housings - adapter housing called - also in harsher environment to use, in which a higher protection class such as IP54 or IP 67 is required.

The invention solves this further object by the subject-matter of claim 32 and the subclaims which follow this further claim, which on the one hand are to be regarded as independent and on the other hand as sub-claims to the preceding claims.

The thus realized adapter housing is simple, easy to handle and very reliable. It should be emphasized that only very few seals are required for its realization.

Adapter housings of the type according to the invention enable the use of the connector parts inserted in them even in harsher environment - for example in production plants or vehicles - by achieving a higher protection class compared to the protection class of the plug part such as IP65 or IP67. The adapter housing is in particular for connector parts of the signal transmission technology with copper conductors, in particular ders suitable for sensors and / or actuators. The term connector part is in this context but not restrictive to understand. It may theoretically not only IDC contacts on the plug part but also electrical contacts such as spring contacts, in particular direct plug contacts (push-in) or other electrical contacts, light guides, electrical pin and / or socket contacts of various designs or eg also elements for pneumatic connector be educated. The adapter housing would be so far usable with other connector parts as the male or female parts shown, especially on those with other contacts.

A first adapter housing for a telephone plug is known from US 4,349,236 (Bell Telephone Laboratories).

The invention also provides an electrical device, in particular a distributor, with a housing, on which at least one or more of the above-claimed connector parts are formed.

The invention will be explained in more detail with reference to the drawing with reference to exemplary embodiments, wherein further advantages of the invention will become apparent. It shows:

1 shows a first perspective view of a plug connection with a plug part and a socket part on a distributor housing;

Fig. 2a-c different perspective views of the plug part of Figure 1 with and without adapter housing.

FIGS. 3a-c and 4a-d show various perspective views of the plug part from FIGS. 1 and 2 with and without adapter housing and cable feedthrough; FIGS.

5a-f an exploded view and further various perspective views of components and assemblies of the male part of Fig. 1 to 4. Fig. 6a-d the connection of a cable to a connector of the type

Fig. 1 in three steps and an enlarged detail of Fig. 5a;

Fig. 7a, b are sectional views through an assembly of the male part of Figure 1 in the contacting of conductors of different diameters. once in a section with the ladders and once in a perspective view without the ladder;

8 shows a view of a plurality of plug-in parts on a distributor housing with a multiplicity of socket parts;

9a-d are sectional views and blasting views of the plug part of FIGS. 1 to 8;

10a-c are sectional views of the male part and the female part of Figure 1 to 9 during mating of the connector ..;

Fig. Lla-d another plug part with and without adapter-housing in a perspective view and in an explosive view;

12a-e are sectional views of the plug part of Figure 12 and a view of the plug part and the socket part in the mated state of the connector ..;

FIG. 13 shows various further views of the plug part from FIG. 12; FIG. and FIGS. 14-19 show a plug part with an M 12 plug face.

Fig. 1 shows a connector 1 with a first connector part, which is designed as a plug part 2, and with a second plug part, which is designed as a female part 3.

The female part 3 is formed on a manifold 5 with a manifold housing 4, which is provided with a plurality of bushing parts 3, which can be arranged closely spaced on the manifold housing 4 in a compact design, without this would hinder the handling. An arrangement on other types of housings of electrical devices such as passive distributors, terminal blocks, active or passive devices, PLC interface devices and as a coupling or transfer element is conceivable. In particular, the female part may be formed on a line, so that a kind of coupling is realized (not shown here).

The plug connection is designed in a simple manner such that it can be plugged together without tools. Only when using adapter housings, however, it may be necessary to unlock them when plugging and / or loosening with the aid of a tool. When connecting the conductor to the plug part 2, the use of a simple pliers may also be advantageous.

The socket parts 3 are placed in the distributor 5 on a printed circuit board 6, which contact them.

On the plug part 2, however, a cable 7 is connected.

The plug part 3 of FIG. 1 is further accommodated in an adapter housing 8, which has a protective collar 37. Corresponding protective collar 9 are formed at openings 10 of the distributor housing 4 and protrude from this outwards.

If the female part were to be formed on a line, so that a type of coupling is realized, a protective collar would be provided on a corresponding adapter housing for receiving the female part (again not shown here).

2 to 4 show various perspective views of the plug part of Fig. 1 with and without adapter housing 8, whereas in Fig. 5 ff the structure and function of the plug part per se - without adapter housing - is clearer.

The plug part 2 and the socket part 3 can also be used without an adapter housing 8 if they are used in an environment in which only a low protection class such as IP20 is required (FIG. 2b). As can be seen from the interplay of FIGS. 5 et seq., The plug part 2 has a base assembly 11 and an actuating element 12 which is movable, in particular displaceable, in a recess 13 of the base assembly 11.

The base assembly 11 is based on a base 14 made of insulating material, which is provided with the recess 13. On the base body 14 with a relatively elongated, flat design, a mating face 18 is formed, which is formed from pin contacts 15 which are surrounded by a protective collar 16 (FIGS. 3, 4).

The pin contacts 15 are connected directly or via conductors or busbars with insulation-isolating contacts 17, which are designed here as IDC fork contacts (FIGS. 5, 9). Embodiments with piercing contacts (not shown here) would also be conceivable.

The IDC contacts 17 are preferably obliquely oriented at an angle between 30 and 60 degrees relative to the longitudinal extent (Figure 5) of the insulated conductor 19 of the cable 7 to be contacted (see, for example, Figure 6).

Furthermore, in the axial direction of the conductor to be contacted, at least two IDC contacts 17a, 17b are provided offset to each conductor.

The two IDC contacts 17a, b provided for each conductor 19 are each designed to contact conductors 19 of a relatively large diameter range (FIGS. 5, 6). Thus, one IDC contact 17a may have closer juxtaposed contact blades 20 than the other IDC contact 17b, so that it is more suitable for contacting thinner conductors than the other IDC contact 17b. In addition, the two IDC contacts 17a, 17b are arranged at a different height Z for each conductor in a direction perpendicular to the extension of the conductors 19 to be contacted, which means that their insertion openings 21 and / or their contacting regions 22 in the Z direction have a different height lie. As a result, the plug part 2 is designed such that conductors of different diameters in different heights (in the Z direction) can be connected in it.

This function is realized here advantageously and in a simple manner by the actuating element 12.

The actuating element 12 - see in particular Fig. 6d), has a base portion 23 and a on the base here on a hinge 60 with a slot 61, in which engages a pin not visible here, pivotally and vertically displaceable (rear, other variants such a hinge in front would be conceivable) hinged lid 24.

In the base part 23 and here preferably also on the cover part 24, receiving contours, in particular insertion grooves 25, are formed for conductors 19 to be contacted, so that they can be inserted fanned out into the receiving contours (for example frame grooves) 25 provided for this purpose.

Since the receiving contours 25 in the base part 23 and / or in the cover part 24 at least partially tapered (here wedge-shaped tapering) are formed, conductors 19 with different diameters different in them to the plant, ie, the central axes of conductors 19 of different diameters are in Z. - direction at different heights.

In this case, the actuating element 12 has at least one or more of the receiving contours 25 for receiving the conductor. Preferably, in each case two opposite receiving contours 25 per conductor are provided on the base part 23 or on the cover part 24. These, in turn, are preferably designed such that they can preferably also engage with one another in order not only to accommodate conductors 19 of a larger diameter (see FIG. 7a) but also conductors of a significantly smaller diameter (see FIG. 7b) and to be able to center them for contacting ,

It is sufficient if the receiving contours 25 extend over a portion of the axial direction in the conductor length of the actuating element 12. It can also be in axial Direction several of which the receiving contours 25 may be provided to define a conductor 19 respectively before and after the area in which the contact with the IDC contacts 17 takes place.

Theoretically, it is also conceivable to easily offset the receiving contours in the base part 23 and in the cover part 24 axially relative to each other (not shown here).

The conductors 19 are each fixed by an assembly, i. a collapse of the base part 23 with the cover part 24 and an associated locking at mutually corresponding first locking means 26.

These first latching means 26 preferably consist of a plurality of latching pins 27 on the base part (and possibly further latching pins 27 on the cover part 23) for engagement in latching recesses 28 on the respective corresponding part (cover part 24 and here also on the base part 23). A ratchet arrangement as a latching means 26 allows here in a simple manner, the locking of the cover part on the base in different height (z-direction) depending on the conductor diameter.

Another ratchet assembly 29 (see Fig. 2b) with a ratchet strap 46, which is also to be regarded as a cable gland and strain relief, defines the cable to be contacted 7 as a fixing device to the base assembly 11, thus facilitating the connection of the cable. Blind holes 39 on the base assembly 11 serve as end stops and fixation for the fanned conductors (Figure 6d). They prevent the folding of lid part 23 and base 24 a disorder of the fanned conductors 19 in the device.

When connecting a cable 7, the cable is first fixed to its cable sheath with the ratchet assembly 29. Then or alternatively thereafter, the conductors 19 of the stripped in the end cable 7 are fanned into the receiving contours 25 of the base 23 of the actuating element 12 and pushed into the blind holes 29. Then, the cover part 24 is pivoted open, so that the conductors 19 are fixed depending on the diameter at different heights in the actuating element 12 (FIG. 7). Thereafter, the actuator 12 is moved, for example, with a pair of pliers in the recess 13 of the base assembly 11 in the recess 13 in the direction of the IDC contacts 17. These enforce openings in the actuator 12, whereupon they pierce or cut through the conductor insulation and then contact the individual conductor wires.

To actuate the actuating element 12 on the base assembly 11, a pair of pliers-in particular a pair of flat-nose pliers-can be used in order to apply the relatively high forces necessary for the contacting.

The fixation of the actuating element 12 when reaching the end position can be realized with second locking means, such a latching hook arrangement 30 between the actuating element 12 and the base assembly 11

Depending on the diameter of the conductor, either one or the other of the conductors 19 contacts two IDC contacts 17a, b the conductors 17. The IDC contacts 17b with the wider contact slot are generally arranged "higher" in order to be closer to the center axis M1 the thicker conductor to lie (Fig. 7a).

On the other hand, the IDC thinner conductor contacts 17a (narrower contact slot) are arranged "lower" in the Z direction in the base 24 so as to be closer to the center axis M2 of these conductors (Fig. 7b).

The female part 3 could in principle be constructed except for the mating face also according to the manner described above.

Alternatively, it can also be designed for attachment to the circuit boards 6 or in any other way.

Preferably, the plug part 2 is latched on the socket part 3 at third locking means. For this purpose, according to a variant as on the plug or socket part 3, preferably on the plug part, a locking and unlocking arrangement, which has a movable latching hook element 45 with two latching hooks 31, 33 (FIGS. 3, 9).

This snap hook element 45 may be formed as a rotatable key element or as a spring element preferably on the side of the base assembly between ribs 57 that latched when mating plug part 2 and socket part 3 on the female part 3 and preferably on the optional protective collar 10 on the female part 3.

Preferably, two of the latching hooks 31, 33 are formed on the plug part 2, which can be unlocked with a screwdriver from its locking position from undercuts 32, 34 in the socket part 3 and the protective collar 9 surrounding the socket part 3.

In order for one of the latching hooks 31, 33 in the axial length on the protective collar 9 and the other on the inner protective collar 16 of the actual female part 3 can be latched (see in particular Fig. 10).

With only a single locking and unlocking and with only one operation is thus a locking and releasing both plug part 2 and socket part 3 or plug and socket part 2, 3 and the adapter housing 8 and the protective collar 9 possible.

The release of the locking position is preferably only possible with the aid of a tool to prevent accidental release.

For the realization of the adapter or housing 8 different measures are taken on the female part 2 and the plug part 3.

If the female part 3 is arranged on an electronics housing, the protective collar 9, which, for example, is sufficient as a protective measure to achieve the high degree of protection alone may be integrally formed on the housing (see, eg, Fig. 1 and 10). The additional design effort required to achieve the high degree of protection is thus reduced to a minimum. The protective collar 9 only has to have the undercut 32 for the latching of the plug part 2 and optionally a further undercut.

The adapter housing 8, however, is a stepped housing, which is designed to receive the entire plug part. It is first pushed together with a sealing single or multi-part cable bushing 47 on the cable 7. The seal on the cable 7 can be made with the cable gland designed for a high degree of protection, e.g. with a nut 59 and a seal and if necessary a collet 58 done.

On the plug part 2, the adapter housing 8 is in turn preferably latched to a further latching hook arrangement 48 here in the region of the fixing device for the cable 7 (all Fig. 10).

On its side facing the protective collar 9 of the female part 3, the adapter housing 8 has the protective collar 37, on whose inner circumference a seal 44 is preferably arranged in an annular groove, which seal is pushed between the protective collar 37, which is pushed over the protective collar 9 of the female part 3 , realized.

In this way, the adapter housing 8 is preassembled latching on the plug part 2.

This preassembled unit is then plugged into the socket part 3.

According to the invention, the connection of the cable to the plug part 2 is first of all particularly simple. In addition, the plug part 2 is equally well suited for conductors of different diameters. The achievement of the higher protection class is also made possible by only a few simple measures.

Optionally, a kink protection, in particular on or in a mother, realized, which may consist of plastic or metal, for example. The implementation of the inventive construction is readily available for cables with conductors of various diameters.

Preferably, the adapter housing also has at least one further movable, preferably rotatable latching hook 40 for latching to a further undercut 49 on the protective collar 9 of the socket part 3. This can also be provided as a key-like, rotatable element with an actuating slot 41.

In addition, a further rotary body 50 (FIG. 10c) can serve to engage with a journal section 42 in a recess 43 (a slot (FIG. 5) or, for example, an internal polygon) in the latching hook arrangement 30 on the plug part, in order thus to actuate this key-like element on the plug part 2 to realize.

The invention is not limited to the embodiments described above but can be varied within the scope of the inventive idea.

Thus, Fig. 11 to 13 as a movable latching hook element 52 with only one latching hook 53 (FIG. 12) a movable, arm-like spring element 54, whose free end is held in a limited limited mobility in a collar 56 on the side of the base assembly 11 and that during mating of Plug part 2 and socket part 3 locked, which can be solved by pressing a resilient portion 55 (see Fig. 11) on the adapter housing 8 from its locking position.

14 to 19, the plug part 2 (or the socket part or the plug part (2) and the socket part, not shown here) on a mating face, which is designed as M12 connector face - here an M12 connector.

In this case, the base assembly 11 is attached or molded onto the side facing away from the mating face to a mating face portion 62 - plug or socket in M12 standard - in which in turn the actuating element is inserted (Fig. 14, 15), wherein the Beschaltten with conductors of a cable in particular according to the above to Figs. 6a-c shown and described type takes place (see Fig. 14 to 18).

Then, for example, a protective sleeve 63 is screwed into a thread 64 which receives the entire connected base assembly 11 and optionally a sealing ring 65, a collet 66 and / or a nut 67 mounted to protect the base assembly. It is thus possible to connect a cable to a plug or socket in the M standard, in particular in the M 12 standard, in a particularly fast manner.

In principle, the presented basic module can also be used or combined with a wide variety of other connector faces.

Socket parts with an M12 connector face can also be realized analogously.

reference numeral

Plug connection 1

Plug part 2 socket part 3

Distributor housing 4

Distributor 5

Printed circuit board 6

Cable 7 adapter housing 8

Protective collar 9

Breakthroughs 10

Basic module 11

Actuator 12 recess 13

Basic body 14

Pin contacts 15

Protective collar 16

IDC contacts 17, 17a, 17b mating face 18

Head 19

Contact cutting 20

Inlets 21

Contacting areas 22 base 23

Lid part 24

Receiving Contours or Grooves 25

Latching means 26

Locking pins 27 locking recesses 28

Ratchet arrangement 29

Latch hook arrangement 30 Latch hooks 31, 33

Undercuts 32, 34

Protective collar 37

Blind holes 39

Latch hook 40

Actuating slot 41

Pin section 42

Recess 43

Seal 44

Latching hook element 45

Ratchet bracket 46

Cable gland 47

Latch hook arrangement 48

Undercut 49

Rotary body 50

Latching hook element 52

Latch hook 53

Spring element 54 yielding region 55

Collar 56

Ribs 57

Mother 58

Collet 59

Hinge 60

Long hole 61

Mating face portion 62

Protective sleeve 63

Thread 64

Sealing ring 65

Collet 66

Mother 67

Claims

claims

1. Plug connection (1), with a. a first connector part, which is designed as a plug part (2), b. and with a second plug part, which is designed as a socket part (3), c. wherein at least one of the connector parts for connecting a cable (7) is formed, which has at least one or preferably more embedded in a cable sheath insulated conductor (19), characterized in that d. the connector part (2) has at least one or more insulation piercing contacts (17) per conductor (19) and an actuating element (12) for contacting the conductors with the insulation piercing contacts (17), wherein e. the actuating element (12) has at least one or more receiving contours (25) for receiving the conductors, which has / have a tapered shape for centering the respective conductor (19) to be contacted.

2. Plug connection (1), in particular plug connection according to claim 1, with a. a first connector part, which is designed as a plug part (2), b. and with a second plug part, which is designed as a socket part (3), c. wherein at least one of the connector parts for connecting a cable (7) is formed, which has at least one or preferably more embedded in a cable sheath insulated conductor (19), characterized in that d. the connector part (2) for each conductor (19) has two or more insulation piercing contacts and an actuating element (12) for contacting the conductors with the insulation piercing contacts (17), and e. in that the at least two insulation-piercing contacts (17a, 17b) for each conductor (19) are perpendicular to the longitudinal extent of the element to be inserted Head (19) at least partially in different height (z) in the connector part (2) are arranged.

3. Plug connection according to claim 1 or 2, characterized in that it comprises a base assembly (11) having a recess (13) in which the actuating element (12) is displaceably guided.

4. Plug connection according to claim 1, 2 or 3, characterized in that the actuating element (12) and the base assembly (11) in the contact position are latched to each other.

5. Plug connection according to one of the preceding claims, characterized in that the actuating element (12) is guided displaceably perpendicular to Leitererstreckungs- direction in the recess (13).

6. Plug connection according to one of the preceding claims, characterized in that the base assembly (11) on a base body (14) of insulating material which is provided with the recess (13), wherein on the base body (14) has a mating face (18) is trained.

7. Plug connection according to one of the preceding claims, characterized in that the base assembly (11) has a relatively elongated, flat design.

8. Plug connection according to one of the preceding claims, characterized in that the IDC contacts (17) relative to the extension of the contacted, provided with an insulation, conductor (19) of the cable (7) obliquely, preferably at an angle between 30 and 60 °, are aligned.

9. Plug connection according to one of the preceding claims, characterized in that the two per conductor (19) provided IDC contacts (17a, 17b) are each designed for contacting conductors (19) of different diameter range.

10. Plug connection according to one of the preceding claims, characterized in that the one of the IDC contacts (17 a) closer juxtaposed

Contact cutting (20) than the other of the IDC contacts (17b).

11. Plug connection according to one of the preceding claims, characterized in that the for contacting thinner conductor suitable IDC contact (17b) is arranged deeper in the base assembly than the other IDC contact

(17a).

12. Plug connection according to one of the preceding claims, characterized in that Einführmündungen (21) and / or contacting regions (22) of the two IDC contacts (17a, 17b) j e conductor (19) in the Z direction lie at different heights.

13. Plug connection according to one of the preceding claims, characterized in that the actuating element (12) has a base part (23) and a relative to the base part (23) movable cover part (24).

14. Plug connection according to one of the preceding claims, characterized in that the base part (23) and the cover part (24) are pivotally connected to each other.

15. Plug connection according to one of the preceding claims, characterized in that the base part (23) and the cover part (24) are connected to a hinge with a slot (61) pivotally connected to each other.

16. Plug connection according to one of the preceding claims, characterized in that in the base part (23) and preferably also on the cover part (24) in each case some of the receiving contours (25) are formed for the conductors.

17. Plug connection according to one of the preceding claims, characterized in that the receiving contours (25) are designed as receiving grooves (25).

18. Plug connection according to one of the preceding claims, characterized in that the receiving grooves (25) in the base part (23) and in the cover part are in opposite directions tapered opposite each other.

19. Plug connection according to one of the preceding claims, characterized in that the one of the receiving grooves (25) which is designed to engage in the other of the receiving contours (25).

20. Plug connection according to one of the preceding claims, characterized in that the receiving contours (25) in the base part (23) and / or in the cover part (24) are arranged axially offset in the conductor direction to each other.

21. Plug connection according to one of the preceding claims, characterized in that the receiving contours (25) extend only over part of the axial direction in the conductor axial length of the actuating element (12).

22. Plug connection according to one of the preceding claims, characterized in that the base part (23) and the cover part (24) can be locked together at different heights.

23. Plug connection according to one of the preceding claims, characterized in that the base part (23) and the cover part (24) with ratchet-like first latching means are latched to each other at different heights.

24. Plug connection according to one of the preceding claims, characterized in that locking pins (27) on Gnmdteil (23) and possibly further locking pins (27) are formed on the cover part (24), which are designed to engage in ratchet-like recesses (28) on the cover part (24) and optionally on the base part (23).

25. Plug connection according to one of the preceding claims, characterized in that a fixing device, in particular a ratchet assembly (29), which is preferably regarded as a cable gland and strain relief, the cable to be contacted (7) on the plug part (2), in particular whose base assembly (11) secures.

26. Plug connection according to one of the preceding claims, characterized in that the one connector part, in particular the socket part (3) on a housing, in particular a distributor, is formed.

27. Plug connection according to one of the preceding claims, characterized in that on the housing with the socket part (3) a protective collar (9) is formed.

28. Plug connection according to one of the preceding claims, characterized in that on the plug part (2) a locking and unlocking device with a movable latching hook element (45, 54) is formed, which at least one or two latching hooks (31, 33, 53) one of which is adapted for latching on the socket part (3) and possibly - if present - other latching hooks for latching on the protective collar (9).

29. Plug connection according to one of the preceding claims, characterized in that the movable latching hook element (45, 54) is designed such that it can be released only with the aid of an actuating element or tool from its locking position.

30. Plug connection according to one of the preceding claims, characterized in that the movable latching hook element (45) is formed like a key rotatable.

31. Plug connection according to one of the preceding claims, characterized in that the movable latching hook element (54) is designed as a movable, arm-like spring element.

32. Plug connection, in particular according to one of the preceding claims or according to the preamble of claim 1, characterized in that one of the connector parts, in particular the plug part (2) in an adapter housing (8) is received, and that on the received plug part (2) a Detent hook element with one or two latching hooks (31, 33) is formed, that on the one hand on the socket part (3) and possibly on the other hand on the protective collar (9) of the socket part (3) can be latched.

33. Plug connection according to one of the preceding claims, characterized in that the adapter housing (8) on its protective collar (10) of the socket part (3) facing side a protective collar (37), at its inner circumference, preferably in an annular groove, a seal ( 44) is arranged, which realizes a seal between the protective collar (37) and the protective collar (9) of the female part (3).

34. Plug connection according to one of the preceding claims, characterized in that in the adapter housing (8), a further, key-like or federarmartiges latch hook element (40) is formed

35. Plug connection according to one of the preceding claims, characterized in that on the fixing device for the cable (7) on the Basisbau- group (11), a further latching hook for a corresponding latching hook of the adapter housing (8) is formed.

36. Plug connection according to one of the preceding claims, characterized in that an actuatable with a tool rotary body (50) in the adapter housing (8) is arranged, which with a pin portion (42) in a contoured recess (43) of the rotatable latching hook element ( 45) engages on the plug part (2), so as to actuate this key-like

Element on the plug part (2) to realize.

37. Plug connection according to one of the preceding claims, characterized in that either the plug part (2) or the socket part (3) or the plug part (2) and the socket part (3) have a mating face portion (62) whose mating face in the M standard , in particular in the M12 standard face, is formed and to which the base assembly (11) is integrally formed or attached.