DE102019125153B4 - Plug-in coupling for a lamp and connection system for an outdoor lamp - Google Patents

Abstract

Plug-in coupling for a light (2), in particular for outdoor use or for underwater operation, the plug-in coupling (8) creating an at least two-pole electrical connection for supplying the light (2) by means of a cable (10) and at least two on one end (40). has contacts introduced into an insulating body (24) of the plug-in coupling (8) which can be connected to wires (14) protruding from the cable sheath (12) of the cable (10), the insulating body (24) being able to be guided over the cable sheath (12). and has a closing flange (34) facing the end face (40), wherein between the closing flange (34) and at least one projection (46) of the insulating body (24) there is a holding body (28) of the plug-in coupling (8 ) is arranged, which surrounds the insulating body (24), wherein the insulating body (24) between the at least one projection (46) and a further projection (44) of the insulating body (24) with a radi al circumferential seal (26) of the plug-in coupling (8), which is connected to an end of the holding body (28) pointing in the direction of the end face (40), so that the plug-in coupling (8) is watertight.

Description

The invention relates to a plug-in coupling for a lamp, in particular for outdoor use or for underwater operation. The invention also relates to a connection system for an outdoor lamp.

It is known from the general state of the art to use lights both for illumination, for example in the garden area, so that a user can move safely or carry out activities in the garden even when daylight decreases. In addition, however, there is also lighting outdoors for purely decorative purposes, for example to illuminate certain sections or installations in color if necessary. Such lighting sources often remain permanently installed over a long period of time, so that protection against the weather is indispensable. This also applies to the power supply and other control lines. Due to the limited service life, battery-powered lights would not be an alternative here.

Designing different types of outdoor lights waterproof is known per se.

This is how it shows DE 10 2009 060 564 A1 a plug connection arrangement for a moisture-proof electrical plug connection with at least one plug, which has a base body with a front fastening flange and an elastic sealing element arranged on this, as well as an electrical line cable that emerges from the rear of the base body, with a contact carrier being inserted in a form-fitting manner into the base body and accommodating electrical contacts .

From the DE 10 2011 075 161 A1 a lighting device is known which has a semiconductor light source arranged on a substrate, an electrical connection element being arranged on the substrate and a housing which is fixed to the substrate, the lighting device having an elastic seal which is used to seal a free space between the electrical connection element and the housing is provided.

From the EP 3 454 427 A1 discloses a connector set comprising a sealing sleeve enclosing a plug housing, a socket housing and a contact area between the two housings to protect the connector set from ingress of water and/or dust.

From the DE 20 2012 003 936 U1 is a light system comprising a plurality of light modules known in z. B. pool walls of swimming pools or footpaths and which have at least one LED, with the light modules each being connected by means of at least one system cable to a common, central, bus-capable controller and being controllable by the latter, with the system cable for supplying power to the light modules and for controlling the respective Lighting modules are provided by the controller, and each lighting module that can be positioned remotely from the controller via an associated system cable has a waterproof housing in particular, in which driver means for supplying power to the LEDs are arranged.

the W01992/016034 A1 describes an electrical connector comprising mating first and second parts, each of which comprises a housing with cooperating locking means such that relative rotation of the first part into abutting engagement with the second part effects mechanical locking of the housings, each part further comprising at least one Electrode comprising, rotatable about the axis of the part forming a complementary pair with an electrode of the other part, the connector being arranged so that the electrodes of each complementary pair are brought into contact during relative rotation between the two parts to a to establish electrical connection simultaneously with the mechanical engagement, the cooperating locking means comprising a multi-threaded screw arrangement.

From the WO 2010/028423 A1 a connector and method for use with a lampholder is known. The connector comprises a mounting element having a first electrical connector element with shielded contact points which are connectable to the power supply, the element being suitable for fastening and being engageable with the mounting element, and a holding element which is suitable for holding a lamp socket, the The element includes a second electrical connector element capable of conducting current to a lampholder, the engagement of the first and second elements allowing the first and second elements to contact and enable the first and second electrical connector elements to come into contact that the electrical contact is broken without exposing the contact points.

the US 2013/0115799 A1 shows an electrical connector-equipped cable with lead wires and an outer cover for covering the lead wires, and an electrical connector with connector blades connected to the lead wires on a front side of the cable. A Outer connector housing is designed to cover part of the cable and part of the connector tongues. A coupling member surrounds the front portion of the cable and is thermally welded to the outer connector housing.

the US3773360A shows a quick connector for connecting and disconnecting a pair of mating male and female connectors. A resilient locking member is carried by the male coupling member and engages the female coupling member upon axial engagement of the coupling members in the locked condition.

the JP 2007134137 A shows an insulating cable clamp that has high air and water tightness. The cable clamp comprises a cable, an insulating core wire and a molded body made of a thermoplastic polyamide resin. The shaped body is fused with the cable and the wire core at a fusion part.

the JP 2015207373 A shows a waterproof jack having a housing provided at a distal end portion of a cable, and a connection terminal provided inside the housing and electrically connected to the cable.

Based on this prior art, the object of the present invention is to create a plug-in coupling that is watertight in accordance with the appropriate specification for protection against dust, contact and permanent immersion (e.g. according to IP68) and is nevertheless easy to produce. In addition, a connection system for an outdoor lamp is to be specified.

This object is achieved by independent patent claim 1, which relates to a plug-in coupling, and by claim 9, which relates to a connection system with such a plug-in coupling. Further advantageous configurations of the invention are the subject matter of the dependent claims. These can be combined with one another in a technologically sensible manner. The description, in particular in connection with the drawing, additionally characterizes and specifies the invention.

According to the invention, a plug-in coupling is created for a lamp, in particular outdoors or in underwater operation, the plug-in coupling creating an at least two-pole electrical connection for supplying the lamp by means of a cable and for this purpose having at least two contacts introduced into an insulating body of the plug-in coupling on one end , which can be connected to wires protruding from the cable sheath of the cable, with the insulating body being able to be guided over the cable sheath and facing the end face having a closing flange, with a holding body of the plug-in coupling slotted in the longitudinal direction of the cable being arranged between the closing flange and at least one projection of the insulating body Which surrounds the insulator, wherein the insulator is provided between the at least one projection and a further projection of the insulator with a radially circumferential seal of the plug-in coupling, which is attached to an i n the end of the holding body pointing towards the front side, so that the plug-in coupling is designed to be watertight.

Accordingly, a plug-in coupling is created which is also suitable for an outdoor light due to its watertight design. The degree of tightness can be determined according to a corresponding specification, e.g. B. IP68, so that the plug-in coupling can create an electrical connection to supply the lamp by means of a cable, whereby permanent submersion can also be possible here. For reasons of higher efficiency, outdoor lights are typically manufactured with LED light sources, the supply of which can be ensured, for example, by means of a two-pole electrical connection. In order to achieve the goal of the watertight design, an insulating body is guided over the cable sheath, with corresponding contacts being arranged inside the insulating body, which are connected to the cable. However, more than two contacts are also possible. The plug-in coupling is therefore connected to a corresponding counterpart via the end face of the insulating body, with a radial projection being located on the insulating body, which on the one hand serves as a holder for the holding body and on the other hand represents a guide for a radially circumferential seal. In order to be able to guide the holding body over the projection, it is therefore necessary to be able to expand this in terms of its diameter. The holding body is therefore slotted in the longitudinal direction, so that it is possible to guide it over the projections of the insulating body, so that it is held by the projections in an axial direction with respect to the cable. The other end of the holding body is held by a terminating flange, which is designed as an integral part of the insulating body and faces the end face of the cable with its terminating surface. The holding body, which surrounds the insulating body, therefore ensures the appropriate mechanical stability. The watertight design of the plug-in coupling is achieved through the interaction of the radial seal and the insulating body.

According to one embodiment of the invention, the contacts are designed as contact sockets.

The distinction between socket or coupling or plug is made here on the basis of the current-carrying contact, i. H. the version with contact socket requires the designation "plug-in coupling" for the entire arrangement. If the contacts were designed as pins, which would also be possible in principle, the entire arrangement would be referred to as a "plug". However, the presently preferred embodiment uses contact sockets as the contacts of the plug-in connector.

According to a further embodiment of the invention, a cable grommet is formed on the insulating body following the terminating flange.

In addition to fixing the holding body, the terminating flange also serves as a stop element when inserting the plug-in coupling into a corresponding counterpart, with the terminating flange continuing in the direction of the cable in the form of a cable grommet, so that the plug-in coupling can be easily removed or inserted. The configuration as a cable grommet also enables the plug-in coupling to last longer, since in particular connecting cables in the transition area are often subject to severe mechanical stress when the plug-in coupling is inserted. It should be mentioned at this point that the terminating flange can be designed with regard to its radial dimensioning in such a way that when the plug-in coupling is introduced into a counterpart, the terminating flange provides an additional seal.

According to a further embodiment, the insulating body is connected to the cable sheath by melting an insulating material of the cable sheath.

According to this embodiment, the plug-in coupling is easy to manufacture, with the contact sockets being attached to the wires protruding from the cable sheath first, so that the insulating body is then connected to the cable sheath from the end face to the closing flange by material melting, which means water or water resistance A dust-tight design of the plug-in coupling allows. In addition, the connection by means of material melting ensures less complex processing, so that the plug-in coupling can also be produced inexpensively in large numbers.

According to a further embodiment of the invention, the holding body and the insulating body are designed in one piece, with the holding body and the insulating body preferably being made of a plastic material, with the plastic material of the holding body typically being harder than the insulating body.

Accordingly, both the holding body and the insulating body are provided, for example, as plastic parts to be produced in large numbers. B. POM-made holding body has a higher mechanical strength in order to additionally stabilize the insulating body mechanically and to enable a secure application of the holding body without deformation and without damage to the insulating body arranged underneath.

According to a further embodiment of the invention, the holding body has an anti-twist device.

The anti-twist device, which can engage in a corresponding counterpart when the plug-in coupling is inserted, ensures that the contacts of the plug-in coupling match the corresponding counter-contacts in terms of their position, so that a connection to the plug-in coupling can be established in a simple manner. In terms of its axial length, the anti-rotation device can be designed in such a way that bending of contact pins is also prevented, since the anti-rotation device initially acts as a guide before contacts can be brought into engagement.

The radially circumferential seal connects to an end of the holding body pointing in the direction of the end face.

Accordingly, when the plug-in coupling is inserted into a counterpart, the force acting in the axial direction, which is caused by friction of the radially circumferential seal on an inner side of the counterpart, is at least partially absorbed by the end of the holding body pointing in the direction of the front side, which extends the service life of the radially circumferential seal increased.

According to a further embodiment of the invention, the holding body has at least one latching lug on its outside, which interacts with a complementary opening in such a way that a detachable connection is created.

According to this procedure, unintentional removal of the plug-in connector is prevented, which could result, for example, when pulling forces are applied to the cable, so that the plug-in connector could be pulled out of its counterpart. by means of Detent lug, however, removal of the plug-in coupling is only possible if it is first pushed out of the corresponding corresponding opening, which, however, usually does not happen in the event of unintentional tensile forces.

In another aspect of the invention, a connection system for an outdoor light is provided. It comprises: at least one plug-in connector as described above, a plug and the cable which is electrically connected to the at least one plug-in connector.

The connector for the plug-in coupling described has at least two further contacts which are arranged inside a housing body in such a way that the at least two further contacts can be brought into engagement with the at least two contacts of the plug-in coupling, the housing body being selected in such a way with regard to its internal dimensions that the radially circumferential seal of the plug-in coupling can be inserted.

Accordingly, a plug is created as a counterpart to the plug-in coupling, with a watertight electrical connection being able to be made by means of the contacts and the further contacts by applying the radially circumferential seal to the inside of the housing body.

In this case, contact pins can be embedded in the housing body as the at least two further contacts.

Although the housing body accommodates the plug-in coupling in its interior, due to the design of the current-carrying contacts as pins it is referred to as a plug in this case.

The plug can be designed as a built-in plug on the lamp. However, this can also be provided as a plug at the end of a cable. The electrical connection of the outdoor light can thus be made by means of a cable, the first end of which is provided with the plug-in coupling, which can be plugged into a corresponding built-in plug on the light. At the other end of the cable, there is a plug that is almost identical in terms of its structure and is connected, for example, to a power supply device that can provide the electrical energy for the outdoor light. In yet other cases, it is also possible that the plug is not fed directly into a power supply unit, but is connected to the power supply unit via a further plug-in coupling, which now acts as an extension cable. It is thus possible to adapt the cabling outdoors accordingly, which significantly improves the possible uses. In addition, the use of a built-in plug also creates the possibility of being able to replace luminaires with defective cables, without having to replace the entire luminaire or having to open the housing of the luminaire, which in turn could create problems during subsequent assembly, in order to turn a to be able to get a waterproof outdoor light.

According to a further embodiment of the invention, the housing body is connected to a further cable sheath by melting an insulating material of the further cable sheath.

Accordingly, the watertight connection on the plug is similar to the connection of the insulating body on the plug-in coupling, in which material melting of the insulating material of the cable sheath ensures a reliable connection.

The previously shown connection between two cable ends can also be expanded according to the invention to include Y-pieces, so that one plug can be assigned multiple plug-in couplings or one plug-in coupling can be assigned multiple plugs. In this way it is possible to create a connection system with which a large number of outdoor lights can be supplied with electrical energy.

• 1 eine Außenleuchte in einer perspektivischen Seitenansicht mit einer erfindungsgemäßen Steckkupplung,
• 2 die Außenleuchte nach 1 mit einer erfindungsgemäßen Steckkupplung in einem Einbaustecker der Leuchte in einer Schnittansicht,
• 3 eine erfindungsgemäße Steckkupplung aus 1 in einer Schnittansicht,
• 4 eine erfindungsgemäße Steckkupplung in einer Seitenansicht,
• 5 der Stecker aus 1 in einer Schnittansicht,
• 6 das Zusammenwirken einer erfindungsgemäßen Steckkupplung mit einem Stecker gemäß der Erfindung,
• 7A ein Einzelelement einer erfindungsgemäßen Steckkupplung,
• 7B ein Schnitt durch das Detail aus 7A,
• 8 ein weiteres Detail einer Steckkupplung und eines Steckers gemäß einer weiteren Ausführungsform der Erfindung,
• 9 die Verwendung einer erfindungsgemäßen Steckkupplung zusammen mit einem Stecker an einem Kabel in einer perspektivischen Seitenansicht, und
• 10 ein Beispiel eines Verbindungssystems mit einer erfindungsgemäßen Steckkupplung.

The invention is explained in more detail below with reference to the drawing. Show it:

• 1 an outdoor light in a perspective side view with a plug-in coupling according to the invention,
• 2 the outside light 1 with a plug-in coupling according to the invention in a built-in plug of the lamp in a sectional view,
• 3 a plug-in coupling according to the invention 1 in a sectional view,
• 4 a plug-in coupling according to the invention in a side view,
• 5 the plug out 1 in a sectional view,
• 6 the interaction of a plug-in coupling according to the invention with a plug according to the invention,
• 7A an individual element of a plug-in coupling according to the invention,
• 7B a cut through the detail 7A ,
• 8th a further detail of a plug-in coupling and a plug according to a further embodiment of the invention,
• 9 the use of a plug-in coupling according to the invention together with a plug on a cable in a perspective side view, and
• 10 an example of a connection system with a plug-in coupling according to the invention.

In the figures, components that are functionally the same or have the same effect are provided with the same reference symbols.

In 1 a lamp 2 is shown in a perspective side view, which is to be set up outdoors, for example. The lamp 2 has on its lamp housing 4 a light exit opening 6 , opposite which a supply of the lamp is to be provided by means of a plug-in coupling 8 . The plug-in coupling 8 merges into a cable 10 which, in the example shown, is provided with two cores 14 within a cable sheath 12 . The two wires 14 enable a two-pole electrical connection to supply the lamp 2 by means of the cable 10. In addition to the lamp housing 4, the lamp 2 also has a holder 16, which can be designed to be adjustable, for example by means of a swivel joint 18. However, the configuration of the lamp 2 itself is not the subject of this invention, so that a detailed explanation can be dispensed with here.

The components relevant to the watertight design of the plug-in coupling 8, which also relate to a corresponding counterpart to the plug-in coupling 8 on the lamp 2, are presented in more detail below. Since the lamp 2 is typically located outside, it is necessary for the plug-in coupling 8 to be watertight, with the electrical connection being intended to meet the IP68 standard, for example.

2 the light 2 is off 1 in a sectional view, the selected sectional plane separating both the cable 10, the lamp housing 4 and the holder 16 approximately in the middle. It can be seen that inside the lamp housing 4 there is a plug 20 designed as a built-in plug, which is inserted into the lamp housing 4 in the form of a housing body 22 . The plug 20 designed as a built-in plug corresponds to the plug-in coupling 8, an electrical connection of the cable 10 to the interior of the lamp 2 being created in this way. The housing body 22 is designed in such a way that its interior can accommodate an insulating body 24 of the plug-in coupling 8 .

A radially circumferential seal 26 is arranged between the housing body 22 and the insulating body 24 and is delimited by a holding body 28 counter to an insertion direction of the plug-in coupling 8 . The lamp housing 4 also has an opening 30 which corresponds to a latching lug 32 on the holding body 28 . The insulating body 24 transitions into an end flange 34 adjacent to the holding body 28, to which a cable grommet 36 is connected. As will be explained below, there are pairs of contacts between the housing body 22 and the insulating body 24 which create an electrical connection between the cable 10 and the interior of the lamp 2 . The insulating body 24, the end flange 34 and the cable grommet 36 are designed in one piece and enclose the end of the cable 10 at least in the area of the end flange 34 and the cable grommet 36.

With reference to 3 is first shown a sectional view of the plug-in coupling 8, so that the details of the structure stand out more clearly. Inside the insulating body 24, two contact sockets 38 are arranged, which are provided on the end face 40 of the insulating body 24 with corresponding openings into which contact pins or the like can be inserted. The contact sockets 38 are connected to the wires 14 of the cable 10, which is usually done by means of a joint, such as crimping. The cores 14 of the cable 10 are provided with wire insulation 42 which provides insulation except for the area of the connection at the contact sockets 38 . In further embodiments, it is possible to use more than the two contact sockets 38 shown, so that for example three or four contact sockets are provided, with the additional contacts in an embodiment with four contacts being arranged in a plane perpendicular to the contact sockets 38 shown or in an embodiment with three contacts can also form a preferably equilateral triangle with these.

The cable 10 is provided on its outside with the cable jacket 12, which is completely surrounded by the insulating body 24 up to the area of the closing flange 34, with the cable jacket 12 then being removed in the direction of the end of the cable in order to surround the cores 14 of the cable 10 exposed with the wire insulation 42. It can be seen that the cable jacket 12 is surrounded by the insulating body 24 from the area of the terminating flange 34 over the area of the cable grommet 36 , with a connection between the cable jacket 12 and the insulating body 24 being produced by melting an insulating material of the cable jacket 42 . The cores 14 of the cable 10 together with the wire insulation 42 and the contact sockets 38 are also inserted into the insulating body 24. The insulating body 24 is typically made from a plastic material by hot pressing. Polyamide is preferably used as the plastic material for this purpose.

Furthermore, the insulating body 24 has a first projection 44, to which a second projection 46 is arranged at a distance, the first projection 44 and the second projection 46 each being designed as circumferential radial projections, so that an annular groove is formed between them into which the radially circumferential seal 26 can be inserted. In addition to fixing the radially circumferential seal 26, the second projection 46 also functions as a holder for the holding body 28, which is guided over the second projection 46, so that the holding body is fixed by the second projection 46 with respect to its front end. The holding body 28 is fixed by the closing flange 34 on the opposite side. For this purpose, the end flange 34 has a stop surface 48 and the holding body 28 has a further stop surface 48 ′, which are arranged radially around the plug-in coupling 8 .

Furthermore 3 it can be seen that the inner diameter of the holding body 28 is slightly smaller than the outer diameter of the second projection 46 . In order to now be able to guide the holding body 28 over the second projection 46, it is provided that the holding body is slightly widened, for which purpose a slot is provided which is formed in the longitudinal direction and completely penetrates the holding body.

With reference to 4 the configuration of the slot 50 arranged in the longitudinal direction is shown again. It can be seen that the slot 50 runs from the area of the radially circumferential seal 26 to the stop face 48 . It is thus possible to widen the insulating body 28 slightly in order to be able to guide it over the second projection 46 . Furthermore 4 it can be seen that the insulating body 28 provides support for the radially circumferential seal 26 when the plug-in coupling 8 is inserted into a corresponding plug, so that it is held in position when it is inserted.

Furthermore, in 4 The detent 32 can also be seen, which is arranged on a resiliently designed section of the holding body 28 in such a way that it can be pressed radially inwards in the direction of the insulating body 24 . In conjunction with the opening 30 (as in 2 shown) thus ensuring that the plug-in coupling 8 engages, with the plug-in coupling 8 only being able to be released again by pushing back the locking lug 32, which prevents the plug-in coupling 8 from being released unintentionally.

The holding body 28 is typically made of a thermoplastic material, such as. B. POM made. This material is stiffer or harder than the insulating body 24 made of polyamide and therefore provides additional mechanical stabilization. What is more important, however, is that when selecting the material for the holding body 28, care must be taken to ensure that a spring effect is created, so that the holding body 28 returns to its starting position after it has been widened by means of the slot 50 and slipped over the projections 44 or 46, without becoming plastic to deform. The spring effect also facilitates the function of the locking lug 32 described above, so that it reliably swings back into the basic position, i.e. the locked position.

With reference to 5 the configuration of the plug 20 is explained in more detail below. The plug 20 can be designed as a built-in plug, as in connection with 1 and 2 explained on the lamp 2, or be designed as a plug for a cable extension that can be brought into connection with the plug-in coupling 8. For this purpose, the plug 20 has, as already mentioned, a housing body 22 which is provided with two contact pins 52 which are connected to the contact sockets 38 according to FIG 3 and 4 correspond. The contact pins 52 are connected to additional wires 54 in order to continue the electrical connection thus produced between contact sockets 38 and contact pins 52 via a corresponding additional cable.

Inside the housing body 22 there is a cavity 56 whose inner dimensions 58 correspond to the outer dimensions of the plug-in coupling 8 . It is thus possible to guide the plug-in coupling 8 into the interior 56 of the housing body 22 and to establish contact between the contact pins 52 and the contact sockets 38 . The electrical insulation at the cores 54 takes place with respect to the housing body 22 in a manner similar to that described above in connection with the cable 10, ie. H. by melting an insulating material when pressed over with the housing body 22.

An extension of the in 5 shown plug 20 to a multi-pole version, as has already been explained above in relation to the plug-in coupling 8, easily possible.

With reference to 6 a sectional view is now shown in which the plug-in coupling 8 and the plug 20 are assembled. It can be seen that two contact pins 52 of the plug 20 protrude into the end face 40 of the plug-in coupling 8 and are connected to the wires 54 . The insulating body 24 is arranged inside the housing body 22 in such a way that the radially circumferential seal 26 ensures a seal in the area of the contact pins 52 . Since the rest of the insulating body 24 is made in one piece and in particular the If the cable sheath is firmly connected in the area of an insulating material by material melting, water entering through an opening in the area of the locking lug 32 will not be able to get into the interior of the areas subjected to electrical voltage. When plug-in coupling 8 is inserted into plug 20 , radially circumferential seal 26 is supported by holding body 28 , which also ensures improved mechanical stability of plug-in coupling 8 .

With reference to 7A the configuration of the holding body 28 is shown again in detail. It can be seen that the locking lug 32 can be resiliently guided radially inwards, so that it can detach from the corresponding housing section on the housing body 22 .

Along the in 7A The design of the holding body 28 is shown again in the section plane AA′ shown in the drawing 7B shown, with the slot 50 running along the longitudinal direction also clearly appearing here. This makes it possible to expand the holding body 28 radially to such an extent that it can be pushed over the first and second projections 44 and 46 and then springs back into its initial position without deforming.

In 8th In a further embodiment, a sectional view through the assembled arrangement comprising the plug-in coupling 8 and the plug 20 is shown. It can be seen that outside of the insulating body 24 there is an anti-rotation device 60 which ensures that the contact sockets 38 on the insulating body 24 are positioned in a fixed orientation relative to the contact pins 52 of the housing body 22 .

In 9 the structure of a connection system 62 is described below, which makes use of the plug-in coupling 8 or the plug 20 according to the invention. Advantageously, a lamp such as that used in 1 was shown, are supplied with electrical energy by means of the plug-in coupling 8 . For this purpose, the plug-in coupling 8 can be provided with the plug 20 via the cable 10, which is connected, for example, to a power supply via a further plug-in coupling 8' and a further cable 10'. The first cable 10 can function as an extension cable here. In other embodiments it would also be possible to connect the power supply directly to the cable 10 .

Finally, referring to the 10 another connection system 62 is shown, in which five plug-in couplings 8 are brought together via a cable 10 on a plug 20, so that, for example, several lights to be connected via appropriate extensions can be connected to a power supply unit. In addition to the configuration shown with five plug-in couplings 8, it is of course also possible to create a different number, such as three or seven plug-in couplings, or to select a structure in which a plug-in coupling is converted to several plugs 20, with this too If you don't want to set a specific number.

The features specified above and in the claims, as well as the features that can be inferred from the illustrations, can be advantageously implemented both individually and in various combinations. The invention is not limited to the exemplary embodiments described, but can be modified in many ways within the scope of specialist knowledge.

Reference List

2

lamp

4

lamp housing

6

light exit opening

8th

plug-in coupling

8th'

further plug-in coupling

10

cable

10'

another cable

12

cable jacket

14

veins

16

holder

18

swivel joint

20

plug

22

case body

24

insulating body

26

poetry

28

holding body

30

opening

32

detent

34

end flange

36

cable grommet

38

contact sockets

40

face

42

wire insulation

44

first lead

46

second projection

48

stop surface

48'

additional stop surface

50

slot

52

contact pins

54

more veins

56

cavity

58

internal dimensions

60

anti-rotation device

62

connection system

Claims (14)

plug-in coupling for a lamp (2), especially outdoors or in underwater operation, wherein the plug-in coupling (8) creates an at least two-pole electrical connection for supplying the lamp (2) by means of a cable (10) and for this purpose has at least two contacts introduced into an insulating body (24) of the plug-in coupling (8) on one end face (40), which can be connected to cores (14) protruding from the cable sheath (12) of the cable (10), wherein the insulating body (24) can be guided over the cable jacket (12) and has a closing flange (34) facing the end face (40), a holding body (28) of the plug-in coupling (8) which is slotted in the longitudinal direction of the cable (10) and surrounds the insulating body (24) is arranged between the closing flange (34) and at least one projection (46) of the insulating body (24), wherein the insulating body (24) is provided between the at least one projection (46) and a further projection (44) of the insulating body (24) with a radially circumferential seal (26) of the plug-in coupling (8), which extends towards the end face (40) pointing end of the holding body (28) connects, so that the plug-in coupling (8) is waterproof. plug-in coupling claim 1 , in which the contacts are designed as contact sockets (38). plug-in coupling claim 2 , In which the insulating body (24) has a grommet (36) which connects to the end flange (34). Plug-in coupling according to one of Claims 1 until 3 , in which the insulating body (24) can be connected to the cable sheath (12) by melting an insulating material of the cable sheath (12). Plug-in coupling according to one of Claims 1 until 4 , In which the holding body (28) and the insulating body (24) are each made in one piece. Plug-in coupling according to one of Claims 1 until 5 , In which the holding body (28) and the insulating body (24) are each made of a plastic material, the plastic material of the holding body (28) compared to the insulating body (24) having a greater rigidity. Plug-in coupling according to one of Claims 1 until 6 , wherein the holding body (28) has an anti-twist device (60). Plug-in coupling according to one of Claims 1 until 7 , wherein the holding body (28) has at least one latching lug (32) on its outside, which interacts with a complementary opening (30) in such a way that a detachable connection is created. Connection system for an outdoor lamp, which has: at least one plug-in coupling (8) according to one of Claims 1 until 8th , a connector (20) and the cable (10) according to claim 1 , wherein the cable (10) is electrically connected to the at least one plug-in coupling (8). Connection system for an outdoor light claim 9 , the plug (20) having at least two further contacts which are arranged inside (56) of a housing body (22) of the plug (20) in such a way that the at least two further contacts are in contact with the at least two contacts of the plug-in coupling (8) in Are to be brought into engagement, wherein the housing body (22) is selected with respect to its internal dimensions (58) so that at least the radially circumferential seal (8) and the insulating body (24) of the plug-in coupling (8) can be inserted. Connection system for an outdoor light claim 10 , wherein in the housing body (22) contact pins (52) are embedded as the at least two other contacts. Connection system for an outdoor lamp according to one of claims 9 until 11 , wherein the plug (20) is designed as a built-in plug on the lamp (2). Connection system for an outdoor lamp according to one of claims 9 until 11 , The plug (20) being designed as a plug (20) at a cable end of the cable (10). Connection system for an outdoor light Claim 13 , wherein the housing body (22) is connected to the cable sheath (12) by material melting of one or the insulating material of the cable sheath (12).

Images