EP1880448B1 - Rotatable feed - Google Patents

Description

The invention relates to a device comprising a coupling and an electrical feed, in particular CEE feed. The electrical supply is provided for the external electrical supply of the power network of a mobile consumer, in particular a caravan or a motorhome or a boat. Such electrical feeds comprise a flange for attachment of the feed to and / or in a wall of the mobile consumer and at least one feed plug for electrically contacting the coupling, in particular a CEE coupling, wherein the feed plug is rotatably mounted in the flange. CEE connectors are also known as collar connectors.

In known feeds of the feed plug is always firmly connected to the flange. Often provided on the feed connector Umkragung the contact elements and possibly also other components of the feed connector are integrally formed with the flange.

About such feeds the internal power network of a mobile consumer by means of a connection or adapter cable, which is connected to a power outlet or removal station, connected to the public power grid.

Usually this rounding devices, especially CEE plug devices are provided. Preference is given to camping and boat berths round plug devices according to VDE 0623 in the design according to the standard EN 60309-2 or IEC 60309-2 are used. Consequently, the caravans, motorhomes and boats are equipped with feeds that correspond with these connectors. This also applies to vehicles and caravans to showman.

The conventional standard-compliant connection or adapter cable, which connects the feed to the socket or removal station, has a coupling on the feed side, on which an inner bayonet closure part is formed, via which the coupling forms a bayonet closure with an outer bayonet closure part provided at the feed , which is to ensure a high-tensile connection between feed and cable. This outer bayonet closure part is formed on a separate ring element, which loosely and thus, among other things also arbitrarily rotatable as a separate body surrounds the feed plug. The infeed plug itself must protrude at least as far out of the flange that the coupling can be completely attached to it. In this plug-in area of the feed plug required for the coupling, the ring element with the outer bayonet closure part can thus not be arranged, but instead the ring element must still be located behind the plug-in area, i. in a region closer to the flange, to be arranged around the feed plug, while still sufficient clearance is provided to allow the required rotational movement of the ring member for closing the bayonet lock with the coupling.

A disadvantage of these known devices is therefore that the feed plug protrudes very far from the flange and thus against a wall of the mobile consumer because of the required mating area for connection to a coupling and because of the intended to be provided bayonet lock ring element. This is not only visually undesirable in many cases, but the protruding position also entails a high risk of damage to the feed, inter alia during the movement of the mobile consumer. For example, caravans and mobile homes on campsites usually have to be ranked in narrow pitches. This risk can be reduced only by appropriate structural measures on the mobile consumer, but one require additional manufacturing effort and / or reduce the overall visual impression.

Devices comprising electrical plug connections with a rotatable connection body are made of US 2003/148659 A1 . EP 0 893 852 A2 and US 5,316,499 known.

The object of the invention is to provide a new device comprising a coupling and an electrical feed, in particular a device in which the aforementioned disadvantages are overcome or at least reduced, in which in particular the feed plug at least to a lesser extent than in the known devices described above the flange and thus protrudes against the wall of the mobile consumer.

This object is achieved with the features of claim 1. Advantageous developments are specified in the dependent of claim 1 claims.

The device according to the invention is characterized in that the coupling to be contacted forms an inner bayonet closure part and that the flange forms an outer bayonet closure part corresponding to the inner bayonet closure part such that the outer bayonet closure part and the inner bayonet closure part form a bayonet closure. The bayonet lock is closable by the fact that the already plugged into the feed connector coupling is rotated together with the feed connector and while the inner bayonet closure member with the stationary outer bayonet closure member cooperates such that the coupling is secured against accidental withdrawal.

The advantages of the invention are, in particular, that the rotatability of the feed plug relative to the flange, which is indeed mounted in the installed state fixed to a wall of a mobile consumer, in principle also allows the rotation of a plugged onto the feed connector coupling relative to the flange and thus also relative to the wall. Thus, it is no longer necessary to provide a stand-alone ring member rotatably mounted around the feed plug with an outer bayonet closure member. Rather, due to the invention now also the clutch itself perform the required for complete closing of the bayonet closure rotational movement, in which case the inner bayonet closure part with a fixed, in particular not rotatable relative to the flange outer bayonet closure cooperate, which is preferably provided or formed on the flange itself is.

Since therefore no ring element with an external bayonet closure part is required in front of the flange, the feed plug can be made substantially shorter, the length required for the complete attachment of the coupling can even run entirely or at least partially within the flange. Thus, the invention enables a device with a coupling and an electrical feed, in which the feed plug protrudes to a much lesser extent relative to the flange and thus against the wall of the mobile consumer. This reduces the risk of damage to the device and allows attractive optical designs of the mobile consumers, which are not possible with conventional devices due to the large board of the feed plug.

According to one embodiment, it is provided that the feed connector is rotatably arranged and / or mounted in and / or on a passage of the flange. Conveniently, this passage at least partially in the form of a cylinder, and the feed plug is rotatable about the central axis of this cylinder, that is, the central axis is at the same time the axis of rotation of the feed plug. To ensure a stable rotational movement of the feed plug in the flange, the feed plug should at least in one of the implementation of the flange assigned area having a corresponding outer shape, in particular the shape of a cylinder jacket having. The "cylinder" of the feed plug is then arranged in the "cylinder" of the implementation, the central axes of both cylinders coincide.

According to a preferred and advantageous embodiment, the axial mobility of the feed plug relative to the flange (ie, the mobility parallel to the axis of rotation of the feed plug) is limited by at least one front guide surface provided at the feed plug and by at least one rear guide surface opposite the at least one front guide surface and also provided at the feed plug. wherein the front guide surface and the rear guide surface are formed such that they enclose the flange at least in the edge region around the passage between them. Preferably, the guide surfaces should be arranged and designed such that the axial mobility of the feed connector relative to the flange through the front guide surface and the rear guide surface is completely or at least largely prevented.

According to one embodiment variant of the device, the feed connector comprises a contact carrier in which contact elements are arranged, and a hood. The hood, also called pot or cover, forms a housing around the on the wall side of the flange (in the mounted state of a wall of the mobile consumer side facing side) arranged Kontaktierungsbereiche the feed connector, in which the contact elements are connected to the respective connection lines. Contact carrier and hood are connected by fasteners, such as screws with each other. The aforementioned front guide surface is expediently provided or formed on the contact carrier, the rear guide surface is provided or formed on the hood.

This variant has the advantage that the device can be produced in a simple manner. The contact carrier is guided from the front to the flange and stuck through the bushing. After contacting the contact elements with the connection performance, the hood is guided from the rear (wall side of the flange in the mounted state) to the flange, thereby enclosing the wall-side part of the contact carrier. Finally, contact carrier and hood are screwed together and form the edge of the implementation in the flange enclosing guide surfaces. Upon rotation of the feed plug relative to the flange, the contact carrier and hood rotate together as a unit about a common axis of rotation.

Preferably, at least one seal is arranged between the flange and the feed plug. This ensures that liquids can not get from the outside through the passage in the flange to the wall side of the flange. Preferably, this seal or these seals are arranged between the front guide surface and flange and / or between the rear guide surface and flange. Alternatively or additionally, this seal or these seals can also be arranged between an area of the feed plug assigned to the feedthrough of the flange and the feedthrough edge of the flange.

An expedient variant of the device provides that the rotational movement of the feed plug is limited relative to the flange. To limit the rotational movement, for example, stop elements can be provided or formed on the flange and the feed plug. Preferably, the rotational movement is limited to a maximum angle of rotation between 30 ° and 270 °, in particular between 160 ° and 180 °, preferably of about 172 °. The limitation of the rotational movement has the advantage that the connecting lines and the contacts between connecting lines and contact elements in the feed plug can not be heavily loaded by excessive rotation of the feed plug and possibly damaged. The lines are at the intended maximum rotation at far not beyond their load limit going out in turn, even at the contacts occur at the intended limited rotational movements on excessive tensile loads that could cause accidental release of a contact.

In the device according to the invention it is provided that the flange forms an outer bayonet closure part which corresponds with an inner bayonet closure part formed on a coupling to be contacted such that the outer bayonet closure part and the inner bayonet closure part form a bayonet closure which affords attachment secured against accidental withdrawal allows the coupling to the electrical feed. For this purpose, at least one, preferably two projections are provided or formed expediently for forming the outer bayonet closure part on the flange, which are arranged such that when inserting the contact elements of the feed plug into the corresponding contact elements of the coupling by corresponding recesses in a projection of the coupling pass through and at a subsequent common rotational movement of the coupling and power connector behind the projection of the inner bayonet lock part on the clutch and prevent retraction of the clutch in this position. It is preferred if the projections of the outer bayonet closure part of the flange and the contact elements of the feed plug are arranged such that the coupling is completely pluggable to the electrical feed only in one of the two stop positions of the feed plug relative to the flange, but not in all other rotational positions. This one possible position should correspond to the position of the feed customary for users of conventional feeds and thus allow a simple and reliable connection of the coupling to the feed, without first having to search for a suitable rotational position of the feed plug. A further advantage is that the coupling can be removed again from the feed connector only in this one rotational position (stop position), that is, after acceptance of the clutch is the feed plug automatically in the stop position required for attaching the clutch.

According to an expedient development of the device, a hinged lid is attached to the flange via a hinge, with which the passage in the flange including the feed plug arranged therein can be closed, in particular by means of a seal is tightly closed.

FIG 1

in einer dreidimensionalen Darstellung ein Ausführungsbeispiel der elektrischen Einspeisung einer erfindungsgemäßen Vorrichtung,

FIG 2

die Einspeisung der erfindungsgemäßen Vorrichtung nach FIG 1 in einer Querschnittsdarstellung,

FIG 3

eine Ausschnittsvergrößerung aus FIG 2

FIG 4

die Querschnittsdarstellung nach FIG 2 in einer Explosionsdarstellung,

FIG 5

eine dreidimensionale Explosionsdarstellung der Einspeisung der erfindungsgemäßen Vorrichtung nach FIG 1, und

FIG 6

eine weitere dreidimensionale Explosionsdarstellung der Einspeisung der erfindungsgemäßen Vorrichtung nach FIG 1.

The invention will be explained below with regard to further features and advantages with reference to the description of exemplary embodiments and with reference to the accompanying drawings. Show it

FIG. 1

in a three-dimensional representation of an embodiment of the electrical feed of a device according to the invention,

FIG. 2

the feed of the device according to the invention FIG. 1 in a cross-sectional view,

FIG. 3

an excerpt from FIG. 2

FIG. 4

the cross-sectional representation after FIG. 2 in an exploded view,

FIG. 5

a three-dimensional exploded view of the feed of the device according to the invention FIG. 1 , and

FIG. 6

a further three-dimensional exploded view of the feed of the device according to the invention FIG. 1 ,

Corresponding parts are in FIG. 1 to FIG. 6 provided with the same reference numerals.

FIG. 1 to FIG. 6 show in various views an embodiment of an electrical feed 10 of the device according to the invention, which is a CEE feed.

The three-dimensional representation in FIG. 1 gives an overview of the entire feed 10. The exploded views in FIG. 5 and FIG. 6 illustrate the composition of the feeds 10 from the individual components. Evident is the flange 11, which has four bushings 29 for screws for installation on the outer wall of a mobile consumer, such as a caravan, motorhome or boat. For sealing the flange rear side (wall side of the flange 11 in the installed state), a flange seal 36 is provided, which is pressed sealingly against the latter when fastening the flange 11 against a wall.

Through a passage 13 in the flange 11, a feed connector 12 is guided. This feed connector 12 comprises a contact carrier 16, in which contact elements 17, here contact pins 17, are arranged, and a hood 18, which can also be referred to as a housing or cover or pot, covering the feed plug 12 at the rear side of the flange 11, so that in particular the contact arrangement arranged there between contact elements 17 and respective connecting line (not shown) is protected. In the area in front of the flange 11 are the contact pins 17 for contacting a coupling, in particular a CEE coupling before. The contact pins 17 are surrounded by a collar 30, which is also provided on the contact carrier 16 of the feed plug. In the example shown, it is a feed 10 with three contact pins 17, one of which usually contact the grounded protective conductor and the other two phase and neutral conductors in the plugged-on coupling.

The feed plug 12 is rotatably mounted in the flange 11. This is particularly in the cross-sectional views in 2, FIG. 3 and FIG. 4 seen in detail, as the rotatable arrangement of the feed plug 12 is realized in the flange 11. FIG. 3 this shows an enlarged Presentation of in FIG. 2 area indicated by X, FIG. 4 shows the cross section FIG. 2 in an exploded view, that is, the essential components of the feed 10 are shown exploded.

It can be seen that the rotation of the feed plug takes place about a rotation axis A, which passes through the center of the passage 13 in the flange 11 and thus constitutes a central axis of the passage 13. The passage 13 is formed in a portion 31 in the form of a cylinder, that is, the flange 11 surrounds the passage 13 in this area as a cylinder jacket. The axis of the associated cylinder is the axis of rotation A.

At least in one with this portion 31 of the bushing 13 corresponding region 32 of the feed connector 12, namely the contact carrier 16 of the feed connector 12, also in the form of a cylinder jacket, wherein the axis of the associated cylinder is also the axis of rotation A and the cylinder radius only slightly is smaller than the radius of the implementation 13 assignable cylinder. The difference between the two radii is chosen so that a smooth and substantially tilt-free rotational movement of the feed connector 12 in the passage 13 of the flange 11 about the axis of rotation A is possible.

• durch eine am Kontaktträger 16 des Einspeisungssteckers 12 vorgesehene vordere Führungsfläche 14 und
• durch zwei an der Haube 18 des Einspeisungssteckers 12 vorgesehene hintere Führungsflächen 15, die der vorderen Führungsfläche 14 gegenüberliegen.

In particular in FIG. 3 , but also in FIG. 2 and FIG. 4 , It can be seen that the axial mobility of the feed connector 12 relative to the flange 11, that is, the mobility parallel to the axis of rotation A, is limited

• by a provided on the contact carrier 16 of the feed connector 12 front guide surface 14 and
• by two provided on the hood 18 of the feed connector 12 rear guide surfaces 15 which are opposite to the front guide surface 14.

Front guide surface 14 and rear guide surfaces 15 are formed such that they enclose the flange 11 at least in the edge region around the passage 13 between them. The flange diameter in this area and the distance between the enclosing, respectively opposite guide surfaces 14, 15 is in this case selected such that an axial movement of the feed connector 12 relative to the flange 11 is completely or at least largely prevented, but does not hinder the rotational movement of the feed connector 12 becomes. In FIG. 3 It can also be seen that on the flange 11, a projection 33 is formed, which is radially outwardly surrounded by a projection 34 of the hood 18, whereby a particularly dimensionally stable and tilt-free rotation of the feed connector 12 is secured in the flange 11 about the axis of rotation A.

Out FIG. 2 and FIG. 4 to FIG. 6 It can be seen that the contact carrier 16 and the hood 18 of the feed connector 12 via fastening means 19, and specifically via screws 19, are interconnected. After tightening the screws 19 close front guide surface 14 (formed on the contact carrier 16) and rear guide surfaces 15 (formed on the hood 18) close the flange 11 at the edge of the passage thirteenth between themselves. To seal the interior of the contact carrier 16 and hood 18 may be mounted between the contact carrier 16 and hood 18, an annular seal (not shown).

In particular in FIG. 3 It can be seen that between the flange 11 and feed connector 12, a seal 20, an O-ring is arranged. The seal 20 surrounds the feed plug 12 annularly, it is arranged between the front guide surface 14 and the flange 11 and between the cylinder jacket-shaped portion 32 of the contact carrier 16 and the feed-in connector 12 and the flange 11 in the region of the implementation 13. The task of the seal 20, the rear side of the flange 11, that is, in the mounted state, the wall-side side of the flange 11, opposite To seal the opposite front of the flange. The seal 20 ensures that no liquid passes through the passage 13 in the flange 11 from the front to the back (wall side) of the flange 11.

The rotational movement of the feed connector 12 relative to the flange 11 is limited by three stop elements 21a, 21b, 21c, which - as in FIG. 6 seen - on flange 11 and feed connector 12, specifically on the hood 18, are formed. The integrally formed on the hood stop member 21a moves during the rotation of the feed connector 12 between the two integrally formed on the flange 11 stop members 21b, 21c. The stop element 21 c forms a fixation 35 for the stop element 21 a to define a stop position of the feed connector 12, in which an external coupling is completely plugged onto the feed connector 12. In the illustrated embodiment, a rotation of the feed connector 12 by about 172 ° is possible between the stop elements 21b, 21c.

This rotation of the feed connector 12 must also follow the connecting leads (not shown), which lead from the contact elements 17, with which they are connected via suitable terminals, to the power network in the mobile consumer. In this case, a secure and stable contact between the respective connection line and the respective contact element must be ensured. For this purpose, a cable strain relief 37 is provided on the hood 18, through which the connection lines from the inside of the hood 18 are led to the outside. This Kabelzugentlastung 37 rotates with the hood 18 and thus the entire feed connector 12, in the interior of the hood 18, the connection cables are therefore exposed to no or at least almost no rotational loads, so that even at the contact with the pins 17 no risk of tearing electrical connection exists. Outside the hood 18, after the Kabelzugentlastung 37, a rotation of the connecting cable by about 180 ° is no problem for conventional cables and is therefore unproblematic.

On its front side (in the installed state, the wall facing away from the flange 11), an outer bayonet closure part 22 is formed on the flange 11. This outer bayonet lock member 22 is provided to cooperate with an inner bayonet lock member (not shown) formed on a clutch to be contacted such that the outer bayonet lock member 22 and inner bayonet lock member form a bayonet lock which provides secure attachment of the clutch against accidental withdrawal the electrical supply 10 allows. The outer bayonet closure part 22 is formed by two projections 23 integrally formed on the flange 11 and projecting inward at the edge of the passage 13 radially to the axis of rotation A. The two projections 23 are offset from each other by 180 °. This arrangement of the projections 23 and their shape and their dimensions correspond to an inner bayonet closure element, not shown, on the coupling to be contacted, with two recesses in a radially outward projection of the coupling. When taking place (axially to the axis of rotation A) insertion of the contact pins 17 of the feed connector 12 in corresponding contact elements (sockets) of the clutch tretensofern the feed connector 12 is in the above stop position (only then a complete insertion of the coupling is possible) - the projections 23 on the flange 11 through the respective corresponding recesses in the projection of the coupling through (is the feed plug 12 is not in the stop position, the projection prevents a complete insertion of the coupling, the bayonet lock can not be closed). In a subsequent common rotational movement of the coupling and feed plug 12 relative to the flange 11, the projections 23 occur behind the projection of the inner bayonet closure part on the coupling. In this position, projections 23 and projection prevent retraction or removal of the coupling from the feed plug 12. This is possible only after a corresponding opposite rotational movement of the coupling and feed plug 12 relative to the flange 11. An accidental disconnection of the clutch is thus effectively prevented. The electrical contact area between the coupling and the feed plug 12 is sealed to the outside when the coupling is fully inserted via a coupling seal 38 which is arranged annularly in the infeed 10 around the contact carrier 16 of the feed plug 12.

The essential difference to the attachment of the coupling in conventional feeds is thus that to close the bayonet fitting the already plugged into the feed plug 12 coupling is rotated together with the feed connector 12, that is, the inner bayonet closure part is rotated on the clutch, and not one outer bayonet closure part integrated in an additional ring element which rotatably surrounds the feed plug. In contrast, in the case of the feed 10 according to the invention, the outer bayonet closure part 22, which is formed on the flange, is stationary.

It can also be seen in the figures that the feed comprises a cover 24. This is pivotally mounted on the flange 11 via a hinge 25. With this cover 24, the passage 13 in the flange 11 including the feed plug 12 arranged therein can be closed. For sealing a lid seal 26 is provided, which is arranged with the lid closed 24 between the lid 24 and flange 11 and the recess 13 surrounds annular. In FIG. 1 It can be seen that in the lid 24, an inner bayonet closure member 27 is formed, which corresponds to the outer bayonet closure member 22 on the flange. These two bayonet closure parts 22, 27 form a bayonet closure. This can be closed by turning the lid 24 relative to the flange 11, about the axis of rotation A. This rotational movement of the lid 24 allows the intended formation of the hinge 25. This has an annular portion 28 which is positively, but rotatably attached to the lid The lid 24 is rotatable relative to this annular portion 28 and thus relative to the hinge 25 in total.

LIST OF REFERENCE NUMBERS

10

Electrical supply, CEE feed

11

flange

12

feed connector

13

Implementation of the flange 11 for the power connector 12th

14

front guide surface

15

rear guide surface

16

contact support

17

Contact elements, contact pins

18

Hood (housing, cover, pot)

19

Fasteners, screws

20

poetry

21a, b, c

stop elements

22

outer bayonet closure part

23

head Start

24

cover

25

hinge

26

cover gasket

27

inner bayonet lock part

28

annular portion of the hinge 25th

29

Feedthrough for fastening screws

30

collar

31

cylinder jacket-shaped portion

32

cylinder jacket-shaped portion

33

Projection on the flange 11

34

Projection on hood 18

35

fixation

36

flange

37

Cable strain relief

38

coupling seal

A

Central axis, axis of rotation

X

Area

Claims (18)

1. Device comprising
   a coupling and
   an electrical feed (10) for the external electrical supply of the power system of a mobile consumer,
   wherein the electrical feed (10) comprises a flange (11) for attachment of the feed (10) on and/or in a wall of the mobile consumer, and at least one feed plug (12) for electrical contacting of the coupling, and wherein the feed plug (12) is disposed rotatably in the flange (11),
   characterised in that
   the coupling to be contacted forms an inner bayonet closure portion, the flange (11) forms an outer bayonet closure portion (22) which corresponds with the inner bayonet closure portion in such a way that outer bayonet closure portion and inner bayonet closure portion form a bayonet closure,
   wherein the bayonet closure is lockable in that the coupling already slipped onto the feed plug (12) is rotated together with the feed plug (12) and in the process the inner bayonet closure portion cooperates with the fixed outer bayonet closure portion in such a way that the coupling is secured against being accidentally pulled out.
2. Device according to claim 1,
   characterised in that
   the feed plug (12) is disposed and/or supported rotatably in and/or on a bushing (13) of the flange.
3. Device according to claim 2,
   characterised in that
   the bushing (13), at least in sections, has a cylindrical shape and the feed plug (12) is rotatable about the central axis of this cylinder.
4. Device according to claim 2 or 3,
   characterised in that
   the feed plug (12), at least in a region assigned to the bushing (13) of the flange (11), has an outer shape corresponding to the bushing (13), in particular the shape of a cylindrical jacket.
5. Device according to claim 3 or 4,
   characterised in that
   the axial movement of the feed plug (12) relative to the flange (11) is limited by at least one anterior guide surface (14) provided on the feed plug (12) and by at least one posterior guide surface (15) opposing the anterior guide surface (14) and likewise provided on the feed plug (12), wherein anterior guide surface (14) and posterior guide surface (15) are designed in such a way that they enclose the flange (11), at least in the marginal region around the bushing (13), between them.
6. Device according to claim 5,
   characterised in that
   the axial movement of the feed plug (12) relative to the flange (11) is prevented entirely or at least as far as possible by the anterior guide surface (14) and the posterior guide surface (15).
7. Device according to one of claims 5 or 6,
   characterised in that
   the feed plug (12) has a contact carrier (16) in which contact elements (17) are disposed and comprises a cap wherein contact carrier (16) and cap (18) are joined together via fastening means (19),
   wherein the anterior guide surface (14) is provided or formed on the contact carrier (16),
   wherein the posterior guide surface (15) is provided or formed on the cap (18).
8. Device according to one of the preceding claims,
   characterised in that
   at least one seal (20) is disposed between flange (11) and feed plug (12).
9. Device according to claim 8 and according to one of claims 5 to 7,
   characterised in that
   the seal (20) or seals are disposed between anterior guide surface (14) and flange (11) and/or between posterior guide surface (15) and flange (11).
10. Device according to claim 8 or 9 and according to claim 4,
    characterised in that
    the seal (20) or seals is/are disposed between a region of the feed plug (12) assigned to the bushing (13) of the flange (11) and the edge of the bushing (13) in the flange (11).
11. Device according to one of the preceding claims,
    characterised in that
    the rotary motion of the feed plug (12) is limited relative to the flange (11).
12. Device according to claim 11,
    characterised in that
    limit stop elements (21a, 21b, 21c) are provided or formed on flange (11) and feed plug (12) to limit the rotary motion.
13. Device according to claim 11 or 12,
    characterised in that
    the rotary motion is limited to a maximum angle of rotation between 30° and 270°, in particular between 160° and 180°, preferably of approximately 172°.
14. Device according to one of the preceding claims,
    characterised in that
    for forming the outer bayonet closure portion (22) at least one, preferably two lugs (23) are provided or formed on the flange, said lugs being disposed in such a way that on slipping the coupling completely onto the feed plug (12) they pass through corresponding cut-outs in an overhang of the coupling and during a subsequent combined rotary motion of coupling and feed plug they move behind the overhang of the inner bayonet closure portion on the coupling and in this position prevent withdrawal of the coupling.
15. Device according to claim 14 and according to one of claims 11 to 13,
    characterised in that
    the lugs (23) of the outer bayonet closure portion (22) of the flange (11) and the contact elements (17) of the feed plug (12) are disposed in such a way that the coupling can only be slipped completely onto the electrical feed (10) in one of the two limit stop positions of the feed plug (12) relative to the flange (11).
16. Device according to one of the preceding claims,
    characterised in that
    a swivelling cover (24) is attached on the flange (11) via a hinge (25) with which cover the bushing (13) can be sealed in the flange (11) including the feed plug (12) disposed therein, in particular can be sealed tight by means of a seal (26).
17. Device according to claim 16,
    characterised in that
    an inner bayonet closure portion (27) is provided or formed in or on the cover (24), said closure portion corresponding with an outer bayonet closure portion (22) on the flange (11), wherein the cover (24) is rotatable to facilitate the rotary motion relative to the hinge (25) which is disposed between cover (24) and flange (11) and that is necessary for closing the bayonet closure.
18. Device according to claim 17,
    characterised in that
    the hinge (25) has a ring-shaped section (28) which is attached on the cover (24) in a positive and/or force-locking manner, in particular is slipped on in such a way that the ring-shaped section (28) is rotatably joined to the cover (24) in the annular direction.

Images