EP4035233A1

EP4035233A1 - Electrical plug connector

Info

Publication number: EP4035233A1
Application number: EP20780565.6A
Authority: EP
Inventors: Oliver Dobler
Original assignee: Neutrik AG
Current assignee: Neutrik AG
Priority date: 2019-09-24
Filing date: 2020-09-22
Publication date: 2022-08-03
Also published as: AT523016A2; CN213401658U; MX2022003227A; KR20220057579A; MX2022003225A; AU2020352392A1; JP2022548992A; BR112022004855A2; CA3154128A1; JP7462741B2; US20220329002A1; AT523016A3; CN114521311A; KR20220044851A; WO2021058129A1; US20220311175A1; EP4035232A1; AT522949A1; CA3153602A1; BR112022004924A2

Abstract

The invention relates to an electrical plug connector, in particular a built-in plug connector, for mounting on the rear face of a device wall, control panel or the like. The plug connector comprises a housing (1) with at least one plug-in opening (2) for a complementary plug connector, preferably a cable plug, wherein a protruding connection flange (3) juts out at the plug-in end of the housing (1) and has apertures (4) for fastening means to pass through. A seal (5) with a central cutout (16) in the region of the plug-in opening (2), and with passages (19) for fastening means to pass through, is present. The surface of the connection flange (3) on the plug-in side and all of the structures on the plug-in side within the boundary of the connection flange (3) are covered by the seal (5).

Description

WO 2021/058131 PCT / EP2020 / 025428

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ELECTRIC CONNECTOR

The invention relates to an electrical connector, in particular a built-in connector, for mounting on the back of a device wall, switchboard or the like., According to the preamble of claim 1, and a seal for such a connector, according to the preamble of claim 15. The invention relates, however also an electrical connector, in particular a built-in connector, according to the preamble of claim 25, as well as a seal for such a connector, according to the preamble of claim 34.

Built-in connectors or chassis sockets are th in the housings of electrical devices, built into control panels or similar arrangements in order to connect these devices to electrical lines. These lines carry at least one end of a cable connector in a complementary design to the built-in connector and can be electrically connected to this and also mechanically locked against unintentional loosening of the connection.

The built-in connector typically comprises a housing with an insertion opening for the complementary connector, with a cantilevered connecting flange protruding from the plug-in end of the housing, which has recesses for the implementation of fastening means.

Typically, such chassis sockets are designed for front mounting, in which the housing with the plug contacts is positioned from the inside in the passage opening of a housing wall or control panel. On the opposite side of the housing wall or the like. A front plate is provided through which fastening screws ge leads, which also penetrate the housing wall or the like. And engage in fastening sections of the housing or fix this via separate clamping means on the housing wall. These fastening sections are preferably arranged in flat, planar connecting flanges that protrude laterally from the housing and come to lie parallel to the housing wall, control panel or the like. WO 2021/058131 PCT / EP2020 / 025428 2

Seals are also used to protect against the ingress of dust and / or moisture into the interior of the device or the control panel.

In CN 204516967 U, a built-in connector is disclosed in which a substantially flat sealing plate is inserted between the flange plate and the connecting flange on the housing and seals the connection between these two components. If a sealing of the entire built-in connector against a device wall in which it is set, a control panel or the like. Desired, an additional seal must be provided between the built-in connector and the device wall. This makes installation more complex and slower and requires an additional component.

A seal for sealing at least the flange plate of a built-in connector is known and is used, for example, in the SE8FD-TOP installation kit from Neutrik AG. This seal is designed as an essentially flat sealing plate and has a central cutout at the location of the insertion opening of the built-in connector. By positioning between the device wall, control panel or the like. And flange plate with insertion opening for the complementary connector, the ingress of dust, moisture, etc. into the interior of the device or the control panel is prevented. The object of the present invention was to overcome the disadvantages of the prior art and to create a built-in connector which is sealed as comprehensively as possible and which can be used by the end user without additional components, easily and quickly with conventional tools, preferably entirely from the rear, ie the plug-in side for the Complementary plug connector opposite side of the housing wall, control panel or the like. To be mounted.

This object is achieved by a connector and an associated seal according to the claims.

The built-in connector according to the invention is characterized in that a recess is worked out in the surface of the connecting flange on the plug-in side, into which the seal is inserted, the seal covering all the plug-in-side structures located within the recess. With this structure, the completely pre-assembled connector from the inside of the housing on the inside of the WO 2021/058131 PCT / EP2020 / 025428

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Housing wall positioned and fixed. The sealing plate is arranged between this chassis socket and the inside of the housing wall and thus prevents the ingress of dust or moisture through the cutout in the housing wall through which the COM plementary connector is inserted.

It is preferably provided that the recess for the seal is delimited on the connecting flange by a web running along its outer peripheral edge. This prevents unintentional slipping of the seal, which is already held in the optimal position during installation.

A further embodiment according to the invention is characterized in that a sealing housing is pushed from the rear over the housing and the connecting flange, the connecting flange being grasped by a front peripheral edge on the insertion side which protrudes forward over the front of the connecting flange including the seal. This means that existing housings for mounting on the rear of the housing wall, the control panel or the like can be supplemented in a dust- and moisture-proof manner.

Another optional embodiment provides that the seal essentially completely fills the recess and the web has a height that is slightly smaller than the thickness of the seal along its peripheral edge. On the one hand, this ensures an optimal sealing effect, because when the connector is screwed to the housing wall, the seal is pressed against this wall and slightly compressed in order to fill the volume between the connecting flange and the housing wall in the best possible and optimally compressed manner. On the other hand, however, the web limits the compression of the seal, so that the seal is not damaged even when the connecting means are fully tightened.

Another optional embodiment of the invention is characterized in that the inner side of the web is chamfered outwards, and the outer side of the seal is chamfered complementarily thereto. This has the effect that the best possible sealing effect is achieved, especially in the edge area of the seal, since the seal yields somewhat to the outside when it is pressed together in the edge area and can thus seal this area as best as possible. WO 2021/058131 PCT / EP2020 / 025428

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A particularly advantageous embodiment of the invention further provides that the recess also contains the recesses for the implementation of the fastening means. This execution ensures that the passage of dust and / or moisture can also be reliably prevented in the area of the mounting holes in the housing wall or control panel.

In this variant of the connector, it is particularly preferred if the passages for the implementation of fastening means surrounding sealing grommets are optionally formed on the seal on the plug-in side and come to lie within the fastening bores of a device wall, control panel or the like when the connector is installed. With this arrangement, the sealing effect in the area of the mounting holes can be further improved.

The outer diameter of the seal preferably corresponds to the inner diameter of the fastening bores.

It is also preferred if the inside diameter of the seal corresponds to the outer diameter of the fastening means.

Another optional embodiment of a connector according to the invention is characterized in that the plug-in opening is limited at least over part of its circumference by a circular web rising above the bottom of the recess for the seal on the plug-in side, the seal having a recess for the web . In addition to the best possible seal, this also allows the complementary connector to be properly guided into the insertion opening.

The web preferably extends over more than 80% of the circumference of the insertion opening.

The optimal seal between the inner circumference of the plug-in opening and the outer surface of the complementary connector is provided if the seal preferably has a bulge on the plug-in side to accommodate the web, which when the connector is installed inside the mounting hole of a device, switchboard or wall Like., comes to rest. WO 2021/058131 PCT / EP2020 / 025428

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Another advantageous embodiment of a connector according to the present invention is characterized in that in the connecting flange, starting from the insertion opening, a recess extends radially outward through which, in the assembled and installed state, an actuating element for a locking mechanism for the complementary connector from the housing protrudes outward through the device wall, control panel or the like. This actuating element is advantageously covered by means of a dome which is molded onto the seal and also protrudes outwards through the device wall, control panel or the like. This ensures that the optimum sealing effect against dust and moisture is also provided in the area of this actuating element.

The dome is preferably a section of the bulge.

In order to prevent dust and moisture from penetrating the interior of the device or the control panel even when the complementary connector is not plugged in, at least one radially protruding connecting strip is formed on the seal, at the outer end of which a sealing plug is attached, according to a preferred embodiment of the invention whose outside diameter is slightly larger than the inside diameter of the sealing lip of the central cutout. In this way, the insertion opening can be closed in a dust-tight and moisture-tight manner even without the complementary connector plugged in.

The sealing plug is preferably formed in the shape of a pot in order to achieve the optimum sealing effect with a low weight and little material requirement. The solution to the problem of the dust- and moisture-tight assembly of a

Built-in connector on the inside of a device wall or control panel is also guaranteed by a seal for a connector described in the preceding paragraphs, which according to the invention is designed to be inserted into a recess of the plug-in surface of a connecting flange of the connector.

In order to achieve the optimum sealing effect also in the area of the fastening bores, according to a preferred embodiment of the invention, passages for the implementation of fastening means are cut out in the seal and on the plug-in side of the seal WO 2021/058131 PCT / EP2020 / 025428 6 integrally molded sealing grommets surrounding these passages, which come to lie in the installed state of the plug connector within the fastening bores of a device wall, control panel or the like. The outer diameter of the seal preferably corresponds to the inner diameter of the fastening bores.

Alternatively, or in addition, it can be provided that the inner diameter of the sealing grommets corresponds to the outer diameter of the fastening means.

Another preferred embodiment of the seal according to the invention is characterized in that the seal has a bulge that rises on the plug-in side and comes to lie within the mounting hole of a device wall, switchboard or the like when the connector is installed. This ensures optimal sealing in the area of the mounting hole when the complementary connector is inserted into the plug-in opening.

In order to securely seal any actuating elements, in particular for unlocking a lock of the inserted complementary connector, it is preferably provided that a dome is formed on the seal, which protrudes outward through the device wall, control panel or the like when installed.

With a simple structure and optimal sealing effect, the seal is preferably designed in such a way that the dome is a section of the bulge.

Another embodiment of the seal according to the invention for dust-tight and moisture-tight sealing, even without a complementary connector, is preferably characterized in that at least one radially protruding connection strip is formed on the seal, at the outer end of which a preferably pot- shaped sealing plug is attached, the outer diameter of which is slightly larger than the inner diameter of the sealing lip of the central cutout. WO 2021/058131 PCT / EP2020 / 025428

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In order to improve the sealing effect even further, as well as the handling, a full-surface grip tab can optionally protrude on the side of the sealing plug opposite the connecting strip, which is preferably pot-shaped, and thus optimal for covering and protecting the dome is designed.

According to a further variant, the device according to the invention is characterized in that the outer edge of the flange plate is bent up in the direction of the housing and covers the outer edge of the connecting flange, the seal having a circumferential sealing lip that protrudes radially into the insertion opening and the seal one in Rich - Device of the housing has upturned edge which engages over the outer peripheral edge of the connec tion flange and which is itself covered by the outer edge of the flange plate, where in the assembled state the circumferential edge of the flange plate protrudes up to a maximum of the rear of the flange plate of the housing and the in The edge of the seal protruding in the direction of the housing protrudes over the entire circumference of the connecting flange of its rear surface. By pressing the built-in connector against the housing wall, the control panel or the like until the edge of the flange plate rests against this wall, the edge of the seal protruding behind the connecting flange is pressed firmly against the wall and this volume fills out between the connecting flange and the edge of the flange plate bruised. The seal is protected against damage before, during and after installation between the connecting flange and the flange plate. The Einstecköff voltage is sealed when the complementary plug is inserted by the circumferential sealing lip, while the seal against the housing of the device or the control panel is guaranteed by the protected by the flange plate upturned edge of the seal. The components flange plate, seal and housing with connecting flange can be plugged together at the factory and can be used by the end user as one component that can be handled together.

Preferably, the inside of the outer edge of the flange plate, which is bent up in the direction of the housing, is chamfered outward, and the outer side of the circumferential edge of the seal is likewise chamfered outward, preferably in a complementary manner. When plugging together or when fastening to the device wall or the control panel by means of the fastening means provided, the edge of the seal is squeezed somewhat as a result WO 2021/058131 PCT / EP2020 / 025428 8 and pressed onto the device wall or the surface of the control panel, which can achieve a particularly good sealing effect.

An alternative embodiment of a connector according to the invention provides that, in the assembled state, the circumferential edge of the flange plate is in front of the height of the

The rear of the flange plate of the housing ends and a circumferential, outwardly protruding sealing edge covers at least part of the thickness of the edge of the flange plate bent up in the direction of the housing. This avoids the shearing action of a beveled inner side of the flange plate and the sealing effect is brought about by a force acting perpendicularly on the edge of the seal.

According to a particularly advantageous embodiment of the invention, it is provided that sealing grommets are integrally formed on the seal at the locations of the assembly bores and protrude in the direction of the flange plate. In the assembled state, the sealing grommets extend within the mounting holes of the flange plate, which preferably have book sen-like extensions in the direction of the connecting flange of the housing. The outside diameter thereof preferably corresponds to the inside diameter of the mounting holes or the socket-shaped extensions, the sealing grommets ending above the lower edge of the receiving area for the head of the fastening means in the mounting hole. On the one hand, this enables a further improvement in the sealing effect by preventing moisture, dirt or dust from penetrating through the mounting holes, while the fasteners, in particular the screw heads, still have a hard stop on the flange plate that can be easily felt . A further optimization of the sealing effect is given when the inner diameter of the sealing grommets corresponds minimally to the outer diameter of the fastening means and thus all surfaces are sealingly against one another.

According to a preferred embodiment of the invention, the connector is additionally characterized in that the flange plate has retaining pegs protruding in the direction of the housing, and the connecting flange has corresponding retaining bores into which the ends of the retaining pegs can be inserted. Preferably, the Halteboh ments are limited by rising over the connecting flange rings and covers the WO 2021/058131 PCT / EP2020 / 025428

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Seal these rings with adjoining centrally open domes. So that the flange plate and the housing with the seal inserted in between are sufficiently well connected to the miteinan to prevent falling apart and to be able to handle the connector as a common component. In addition, in the case of holding bores that completely penetrate the connecting flange, the retaining pins can be provided to stop at the front of the device housing, the control panel or the like and thus exert a spacer effect in order to limit the effect on the seal and thus to prevent their damage. In order to ensure the sealing effect also for the holding bores, the central opening of the dome preferably has a slightly smaller diameter than the through opening and / or the outer diameter of the holding pin. This ensures a tight implementation of the retaining pin, as well as good cohesion due to the friction between the seal and the retaining pin.

The connector is preferably designed such that the flange plate has a circumferential groove surrounding the insertion opening, in which groove a strip surrounding the sealing lip for the insertion opening radially outside and rising above the surface of the seal is received. In addition to optimally centering the seal and flange plate with respect to one another, this strip also acts as an additional sealing strip and thus increases the sealing effect.

In many cases of plug connections, it is desirable that an unintentional loosening of the connection is prevented. For this purpose, locking arrangements are available between the complementary connectors, but they must be unlocked for the intended solution of the connector by actuating an actuator. Therefore, a preferred embodiment of a connector according to the invention provides that a recess extends radially outward from the plug-in opening in the flange plate, through which, in the assembled state, an actuating element for a locking mechanism protrudes from the housing outward to the front of the flange plate. In order to optimally seal this extension of the insertion opening, it stretches a radially adjoining the insertion opening over the surface of the WO 2021/058131 PCT / EP2020 / 025428 10

Seal lifting dome through the recess to the outside on the front of the flange plate. The actuating element is covered by the dome.

To solve the problem set out above, a seal for an electrical connector, in particular a built-in connector, specifically a plug connector according to one of the preceding paragraphs has been designed in order to optimally seal it against a device wall, control panel or the like. This seal has a zent ral cutout at the point of the insertion opening of the connector and recesses at the points of mounting holes for the connector.

It is particularly characterized according to the invention in that a sealing lip encircling the central cutout delimits the inner circumference of the central cutout, and on a rear side of the seal there is a bent back edge which rises above the rear surface of the log and on which a circumferential sealing structure is arranged is. Thus, this seal is suitable both to seal the insertion opening when the complementary connector is inserted, and to seal the built-in connector at the same time against the device housing, the wall of the control panel or the like.

In this case, the sealing structure preferably comprises a circumferential sealing strip, which enables reliable, linear sealing. The outside of the circumferential edge of the seal is preferably beveled towards the outside in order to convert only part of the fastening force acting perpendicularly on the seal into contact pressure and thus to limit this. As an alternative embodiment, a seal is provided in which the sealing structure is a circumferential sealing edge that protrudes radially outward. In this way, a shearing action that is not desired can be avoided on the outer edge of the seal and the sealing edge can be pressed vertically against the device wall, control panel or the like. A particularly preferred embodiment of a seal for a built-in connector in particular is characterized in that at positions for the implementation of fastening means, seal rising above the front surface of the seal is also filled WO 2021/058131 PCT / EP2020 / 025428 11 central ducts for the fastening means are arranged. This means that the built-in connector can also be mounted in an optimally sealed manner at the points of the fastening means. A further advantageous embodiment of a seal according to the invention is characterized in that at positions for the passage of retaining pins, domes with central passages for the spacer pins are arranged above the surface of the seal rising above the surface of the seal. Such a seal is optimally suited for use in built-in connector, the flange plate and housing of which can be connected to one another at least temporarily by means of interacting retaining pins and retaining bores on these components.

For built-in connectors with locking arrangements and actuating elements for unlocking them, a seal is optimally suited which, according to the invention, has a dome that rises radially adjacent to the insertion opening over the front surface of the seal. The actuating element of the locking arrangement can be accommodated under this dome. This dome is preferably made in one piece with the seal. The good centering of the seal with respect to the flange plate, preferably, is ensured by a bar which surrounds the sealing lip for the insertion opening radially on the outside and rises above the front upper surface of the seal. This bar also represents an additional sealing edge and also improves the sealing effect. In order to keep the built-in connector sealed even when the complementary connector is not inserted, at least one radially protruding connecting strip is preferably formed on the seal, at the outer end of which a sealing plug is attached, the outer diameter of which is slightly larger than the inner diameter of the sealing lip of the insertion opening . In order to save material, this sealing plug is preferably embodied in the shape of a cup.

A full-surface grip tab preferably protrudes from the side of the sealing plug opposite the connecting strip, which significantly simplifies handling. Preferably WO 2021/058131 PCT / EP2020 / 025428 12 this grip tab is also pot-shaped and covers and protects, when the sealing plug is inserted, the dome which covers and seals the actuating element of the locking arrangement. For a better understanding of the invention, it is explained in more detail with reference to the following figures.

They each show in a greatly simplified, schematic representation:

1 shows a built-in connector according to the invention in an XLR design, seen from the front in the insertion direction;

FIG. 2 shows the built-in connector of FIG. 1 in a side view;

Fig. 3 is a vertical section through the built-in connector of Figure 1 in the installed system state, along the line III - III;

FIG. 4 shows an exploded view of the built-in connector of FIG. 1 seen obliquely from the front;

Fig. 5 is an exploded view of the built-in connector of Fig. 1 seen from obliquely out th;

6 shows a further embodiment of a built-in connector according to the invention, here in an embodiment for RJ45 data plugs, seen from the front in the insertion direction;

FIG. 7 shows the built-in connector of FIG. 6 in a side view;

8 shows the built-in connector of FIG. 6 in a view from the rear;

9 shows a vertical section through the built-in connector of FIG. 6 in the installed state, along the line IX-IX;

FIG. 10 shows an exploded view of the built-in connector of FIG. 6 seen obliquely from the front;

FIG. 11 shows an exploded view of the built-in connector of FIG. 6, seen obliquely from th;

12 shows a view of a first embodiment of a built-in connector according to the invention according to another variant of the invention, obliquely from the top;

13 shows a view rotated 180 degrees; WO 2021/058131 PCT / EP2020 / 025428

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14 shows an exploded view obliquely from the front and top; 15 shows a cross section exactly in the center plane of the built-in connector of FIGS. 1 to 3;

16 shows a cross section in a parallel plane which contains the central axes of the fastening bores and the retaining pins;

17 shows a detailed cross section in the area of the fastening bores with the fastening screw inserted; 18 shows a detailed cross section in the area of the fastening bores with the fastening screw inserted and tightened; 19 shows an advantageous embodiment of a seal for a built-in connector on a larger scale; 20 shows a view of a further embodiment of a built-in plug connector according to the invention from obliquely from above; FIG. 21 shows a cross section exactly in the center plane of the built-in connector of FIG. 7; FIG. and FIG. 22 shows a cross section through a further embodiment of a built-in connector with a stepped beveled sealing edge.

By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component designations, whereby the disclosures contained in the entire description can be transferred analogously to the same parts with the same reference numerals or the same component names. The position details chosen in the description, such as above, below, to the side, etc., refer to the figure immediately described and shown and these position details are to be transferred accordingly to the new position in the event of a change in position.

In Fig. 1, a first embodiment of a built-in connector according to the invention in the form of a chassis socket for XLR plug connections is shown as an example. Of course, the structure according to the invention can also be transferred to other types of built-in plug connectors, which is explained by way of example in the further exemplary embodiment of FIGS. 6 to 11, which show an RJ45 data plug chassis socket. WO 2021/058131 PCT / EP2020 / 025428

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In the following description, the same reference numerals or component designations are used for the same parts. In order to avoid unnecessary repetition, reference is made to the detailed description that has already been made. The exemplary embodiments show possible design variants, whereby it should be noted at this point that the invention is not limited to the specifically shown design variants, but rather diverse combinations of the individual design variants are possible with one another and this possible variation is based on the teaching on technical action by the present invention is within the ability of a person skilled in the art working in this technical field.

The electrical built-in connector of FIGS. 1 and 2, shown in detail in section in FIG. 3 and in exploded views in FIGS. 4 and 5, comprises a housing 1 with a plug-in opening 2 for a complementary connector (not shown). At the plug-in end, on the front side of the housing 1, a projecting connecting flange 3 is provided, which protrudes preferably at right angles from the housing 1 and preferably over its entire circumference.

The connecting flange 3 also has through openings or partially open recesses 4, through which fastening means, typically fastening screws, rivets or the like, for the built-in connector can be passed in order to attach it from the rear, ie the side opposite the plug-in side, in a mounting hole to be fixed to a device wall, a control panel or similar elements. The fastening means engage in fastening holes in the device wall, control panel or the like. A. The recesses 4 are preferably positioned in two opposite corners of the connecting flange 3 here, which is rectangular here, with respect to the central axis of the plug-in opening 2. Of course, other outline shapes of the connecting flange 3 are also possible, for example a circular outline, a polygonal course, or the like. Through-openings 4 can also be present in all corners of the connecting flange 3.

Although other types of construction for the housing 1 and the fixing of the electrical contact elements 8 in the housing 1 are possible, the drawing figures show a particular WO 2021/058131 PCT / EP2020 / 025428

- 15 - preferred embodiment with a separate, pushed into the housing 1 contact carrier 6 shown. The housing 1 is made up of two concentrically arranged housing parts, an outer housing part 11 and an inner housing part 12, which are spaced apart by an annular gap 13, this annular gap 13 forming an annular plug-in opening for a socket-shaped plug extension of a complementary cable connector. An annular bottom 14 connects the two housing parts 11, 12 at the end of the housing 1 opposite the plug-in opening 2. The cylindrical volume inside the inner housing part 12 forms the receptacle for the Kontaktträ ger 6, which is preferably fixed therein by latching, possibly also by gluing, pressing or bracing by means of the rear cover 7. This cover 7 is the rear end of the Housing 1 is preferably closed airtight and watertight, wherein the cover 7 can be welded to the housing 1, preferably by ultrasonic welding, glued or connected in any way with a positive or material fit. Only the rear ends of the electrical contact elements 8, which are fixed in the contact carrier 6, preferably by pressing, gluing or similar methods, and the grounding contact 9 penetrate the cover 7 in a sealed manner and protrude rearward out of the housing 1.

Finally, a locking arrangement is also positioned in or on the housing 1, which has at least one locking element 10 in order to prevent unintentional removal of the inserted complementary plug connector. This locking element 10, preferably a locking spring, can be compressed by means of an actuating element 15 to release the complementary connector. This actuating element 15 protrudes beyond the plug-in end of the housing 1 to vome and beyond the front of the connecting flange 3 so that it can be easily reached and operated by the user.

The built-in connector according to the invention is, as will be explained below in connection with the specific embodiment of in particular the connecting flange 3 and a seal 5 arranged on the front side of the connecting flange 3, for installation in a completely assembled configuration and with all components including the seal 5 on the Inside of the device wall, the back of the control panel or similar electrical or electronic devices. WO 2021/058131 PCT / EP2020 / 025428

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This seal 5 has a central, preferably circular cutout 16 in the loading area of the insertion opening 2 of the housing 1, which is bounded along its circumference by a sealing lip 17 which protrudes radially into the cutout 16 and the insertion opening 2. In a plate-shaped part 18 of the seal 5, passages 19 for the implementation of the fastening means for the built-in connector, coaxially with the recesses 4 in the housing 1, are cut out.

The seal 5 is inserted with the plate-shaped part 18 in a recess 20 which is worked out in the surface of the connecting flange 3 on the insertion side, and is designed accordingly. The through openings 4 for the fastening means are preferably arranged within the recess 20. With its plate-shaped part 18, the seal 5 preferably covers all of the insertion-side structures located within the recess 20 in the area of the connecting flange 3. For clean positioning of the seal 5 and to ensure a defined sealing force, the recess 20 for the seal 5 is limited by a web 21 on the connection flange 3, which extends along its outer peripheral edge and rises in the direction of the insertion side over the front surface of the connection flange 3. This web 21 preferably forms a contact line with the device wall, the wall of the control panel or the like on the outer edge of the connecting flange 3 over the entire circumference, so that the fastening screws, for example, can be tightened to the stop and the seal 5 nevertheless only one Gets predetermined defined pressure, since through the web 21 a minimum distance between the rear of the device wall, the control panel or the like. And the front of the connecting flange 3 is guaranteed. Compliance with narrowly defined tightening torques can thus be avoided, as can the risk of the seal 5 being destroyed if too high a tightening torque is used.

It is when tightening the fastening means in the course of assembly of the built-in connector, the web 21 on the peripheral edge of the recess 20 in the connecting flange 3, which also surrounds the plate-shaped part 18 of the seal 5, pressed against the rear of the device wall, the control panel or the like in particular the plate-shaped part 18 which surrounds the mounting hole on all sides is completely covered and protected by the connecting flange 3. As an alternative to this, a construction could also be selected in which, in the assembled state, the circumferential web 21 is lower than the thickness of the seal WO 2021/058131 PCT / EP2020 / 025428

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5 in the area of the connecting flange 3, so that the seal 5 when attaching the built-in connector and tightening the fastening means between the connecting flange 3 and the device wall, control panel or the like. Can evade to the outside. It would also be conceivable that an outwardly protruding sealing seam is clamped between the web 21 and the device wall, control panel or the like.

In the example shown, the seal 5 essentially completely fills the recess 20. The web 21 has a height that is slightly smaller than the thickness of the device 20 you, in particular its plate-shaped part 18, along the peripheral edge. The inner side of the web 21 can be chamfered towards the outside, just as the outer side of the plate-shaped part of the seal 5 can be chamfered in a complementary manner.

On the front side of the plate-shaped part 18 of the seal 5, i.e. on its plug-in surface, seal sleeves 22 are integrally formed. This seal fill 22 surround the passages 19 for the implementation of the fastening means in the form of sealing rings, they come to lie in the installed state of the connector within the mounting holes in the device wall, control panel or the like and preferably protrude slightly on the plug-in connector opposite side thereof (see Fig. 2). In this case, the outside diameter of the seal sleeve 22 preferably corresponds to the inside diameter of the fastening bores. For an optimal sealing effect, the inside diameter of the sealing grommets 22 also corresponds to the outside diameter of the fastening means; to be more precise, the inside diameter is determined here in the section in which the shank of the fastening means, for example the threaded section of a fastening screw, is in the fastening bore of the device wall. Control panel or the like. Is added.

In the unloaded state, the sealing grommets 22 end - as can be seen in FIG. 3 - slightly above the lower edge of the fastening bore. After tightening the fastening means, with the built-in connector on the rear of the device wall, the control panel or the like being used and the sealing sleeve 21 being pulled further into the fastening hole, the material of the sealing sleeves 22 is finally between the fastening means, squeezed the inside of the mounting hole and the connecting flange 3 and thus optimally seals the area of the fastening means. WO 2021/058131 PCT / EP2020 / 025428

- 18 -

The inside diameter of the seal sleeve 22 is preferably larger than the outside diameter of the fastening means, in particular in the case of fastening screws, where this outside diameter is the nominal diameter of the thread. The inner diameter of the seal liner 22 in the unloaded state should at least correspond to the outer diameter of the fastening means. When the fastening means is completely tightened, however, the sealing grommet 22 is compressed and its material rests against the inner wall of the fastening bore and, if present, also penetrates between the threads of fastening screws. When using fasteners with a countersunk head, there is also a sealing effect on the upper, plug-in edge of the sealing grommet 22 by pulling the components together with compression of the material of the sealing grommet 22, so that in combination there is an optimal sealing effect over the entire height of the sealing grommet 22 .

In the built-in connector shown by way of example in the drawings, the insertion opening 2 is delimited at least over part of its circumference by a circular web 23 that rises above the bottom of the recess 20 for the seal 5.

The the connecting flange 3 facing side of the gasket 5 has a recess 24 _· Advantageously, upon insertion of the seal 5 in the recess 20 of the connecting flange 3 receives the web 23, this recess 24 through the back of a to einsteckseitig collected bulge 25 of the gasket 5 educated. When the built-in connector is installed, this bulge 25 comes to lie within the mounting hole in the device wall, control panel or the like. In the same way as was described for the sealing sleeves 22, the outer diameter of the bulge 25 preferably corresponds to the inner diameter of the mounting hole, which ensures an optimal sealing effect. Radially towards the inside, the bulge 25 is immediately followed by the sealing lip 17 which, when the complementary connector is inserted, seals the plug-in opening by resting on its upper surface. The web 23 is typically only interrupted in the area through which the actuating element 15 runs, and thus preferably extends over more than 80% of the circumference of the insertion opening 2. Starting from the insertion opening 2, in the preferred embodiment shown, a recess 26 extends radially outwards, through WO 2021/058131 PCT / EP2020 / 025428

- 19 - which in the assembled and installed state the actuating element 15 for the locking mechanism protrudes from the housing 1 to the outside. The outwardly protruding section of the actuating element 15 is covered by a dome 27, which is preferably molded directly onto the seal 5. The dome 27 also protrudes through the mounting hole, which must also have a corresponding recess in an otherwise circular cutout, outward onto the side of the device wall, control panel or the like opposite the built-in connector. This dome 27 is preferably a section of the bulge 25. Finally, the seal 5 can be improved even further by integrally integrating at least one radially protruding connecting strip 28, preferably starting from the bulge 25, at a short distance above the front surface of the plate-shaped part 18 of the seal 5. This makes it possible that the built-in connector can be mounted in its entirety, with the seal 5 and its plate-shaped part 18 in the recess 20 on the rear side of the device wall, the control panel or the like, and the bulge 25, the sealing sleeve 22 and the dome 27 on the front, plug-in side of the device that is opposite the built-in connector nd, the switchboard or the like. Lie and the connec tion strip 28 on this front side of the bulge 25 runs away. A preferably open, pot-shaped sealing plug 29 is attached to the outer end of the connecting strip 28 and can be inserted into the insertion opening 2 or the cutout of the seal 5 bounded by the sealing lip 17 and tightly closes this cutout 16. For this purpose, the outer diameter of the cylindrical section of the sealing plug 29 is preferably slightly larger than the inner diameter of the sealing lip 17 of the central cutout 16. For easier handling, a full-surface grip tab 30 protrudes from the side of the sealing plug 29 opposite the connecting strip 28. If, as in the embodiment shown here, this grip tab 30 is preferably also designed in the shape of an open cup, it covers the dome 27 when the sealing plug 29 is inserted and protects it from damage.

For easier handling of the sealing plug 28, a full-surface gripping tab 29 protrudes from the side of the sealing plug 28 opposite the connecting strip 27. Preferably, this tab 29 is also designed to be open, pot-shaped, with its opening in the WO 2021/058131 PCT / EP2020 / 025428 20 is oriented in the same direction as the dome 27 sealing the actuating element 15 and is in line with this dome 27 and the central axis of the insertion opening 2. This acts when the connecting strip 28 is folded over to insert the sealing plug 29 into the insertion opening 2, that at the same time the dome 27 is covered and protected by the cup-shaped grip tab 30.

In FIG. 6, a second embodiment of a built-in plug connector according to the invention in the form of a chassis socket for a data plug, in particular an RJ45 data plug, is shown in a perspective view.

The electrical built-in connector of FIGS. 6 to 8, shown in section in FIG. 9 and in exploded views in FIGS. 10 and 11 in detail, also comprises in this embodiment a housing 1. In this further embodiment, this is integral with the central contact carrier 6 executed. In the housing 1 or the contact carrier 6 formed therein, the vome-facing insertion opening 2 for the complementary connector is seen, again an annular gap 13 surrounds the central contact carrier 6 and forms an annular insertion opening for a socket-shaped plug extension of the complementary connector. The contact carrier 6 is designed here for data contacts, for example in RJ45 format. A locking arrangement is also provided for the complementary connector, which is constructed as explained above and can be unlocked again by means of the actuating element 15.

In addition to the socket-like receptacles 31 for the fastening means for mounting the hous ses 1 on the back of a device wall, control panel or the like. The housing variant shown has openings 32 in the connecting flange 3 for light guides 33 or similar elements, light-guiding or light-scattering. Of course, in the seal 5 covering the plug-in side surface of the connecting flange 3, in particular in its plate-shaped part 18, corresponding bushings 34 for these light guides 33 are processed and encompass these dust- and moisture-tight.

From the rear, ie from the side opposite the insertion side, a sealing housing 35 is pushed over the housing 1 with the contact carrier 6. This sealing housing 35 has a projection 36 at the front end, with which it the connecting flange WO 2021/058131 PCT / EP2020 / 025428

- 21

3 on the housing 1 includes and covers. The connecting flange 3 is also surrounded by an insertion-side front peripheral edge 37 of the projection 36 of the sealing housing 25. This peripheral edge 37 protrudes from the rear over the front side of the connecting flange 3 together with the seal 5, in particular its plate-shaped part 18, towards the front and assumes the function of the circumferential web 21 of the first embodiment. The peripheral edge 37 of the sealing housing 35, together with the front surface of the connecting flange 3, forms the recess for inserting the seal 5, in particular for its plate-shaped part 18, and forms a contact line with the rear of the device wall, the wall of the control panel or the like over its entire circumference. , and also defines a minimum distance therefrom so that the fastening means can be tightened to the stop and the seal 5 still only receives a predetermined, defined pressure. Again, adherence to narrowly defined tightening torques can be avoided, as can the risk of the seal 5 being destroyed by too much compression. The sealing housing 35 also has sleeve-shaped receptacles 38 for the fastening means, through which the sealing housing can be fastened to the rear of the device wall, the control panel or the like and can be tightened in this way until the peripheral edge 37 rests against the device wall, the control panel or the like. The seal 5 is then between the device wall, the control panel or the like., The connecting flange 3 and the peripheral edge 37 clamped and pressed together in order to achieve the sealing effect around the mounting hole of the housing 1 and all openings in the device wall, the control panel or Like. In connec tion flange and in the sealing housing 35 to ensure.

For the light guides 33, passages 39 are provided on the rear side, preferably of the projection 36 of the sealing housing 25, and encompass these light guides 33 in a dust-tight and moisture-tight manner. Through the same dust and moisture-proof passages 40, the ends 41 of the contacts of the contacts of the contact carrier 6 provided for connection to external connections are guided to the outside on the rear side of the sealing housing 35. Otherwise, the seal 5 is designed in the same way as was described in connection with the first embodiment. WO 2021/058131 PCT / EP2020 / 025428 22

In FIG. 12, a first embodiment of a built-in plug connector according to the invention according to a variant of the invention, in the form of a chassis socket for a data plug, in particular an RJ45 data plug, is shown in a perspective view. Of course, the structure according to the invention can also be transferred to other types of built-in connector, which is explained by way of example using the further exemplary embodiment in FIGS. 20 and 21, which show an XLR chassis socket.

The electrical built-in connector of FIG. 12, shown in detail in an exploded view in FIG. 14, comprises a housing 101 with an insertion opening 102 for a complementary plug connector (not shown). At the plug-in end, on the front side of the housing 101, a projecting connecting flange 103 is provided, which protrudes preferably at right angles from the housing 101 and preferably over its entire circumference.

The connecting flange 103 also has through openings or partially open recesses 104 through which fastening means 105, typically fastening screws, rivets or the like, for the built-in connector can be passed in order to attach them to a device wall G, a control panel or similar elements fix (see Fig. 17). The recesses 104 are preferably positioned in two corners of the connecting flange 103, which are rectangular here, opposite one another with respect to the central axis of the insertion opening 102. Of course, other shapes of the connecting flange 103 are also possible, for example a circular shape, a polygon, or the like.

Through-openings 104 can also be present in all corners of the connecting flange 103.

At other points of the connecting flange 103 there are holding bores 106 which are delimited by rings 107 rising above the front side of the connecting flange 103. Typically, two holding bores 106 are positioned in two corners of the connecting flange 103 that are opposite one another with respect to the center axis of the insertion opening 102. In these holding bores 106 complementary holding elements of other components can be used. These retaining bores 106 are preferably provided in the center of rings 107 rising above the connecting flange 103. WO 2021/058131 PCT / EP2020 / 025428

- 23 -

Finally, a locking arrangement 108, 109 is positioned in or on the housing 101, the at least one locking element 109 of which can also be unlocked by means of an actuating element 108. This actuating element 108 protrudes from the plug-in end of the housing 101 so that it can be easily reached by the user.

In the assembled state of the built-in connector, a plug-in flange plate 110 lies opposite the front side of the connecting flange 103 of the housing 101. This has an insertion opening 111 for the complementary connector in a coaxial arrangement to the insertion opening 102 of the housing 101. Furthermore, mounting bores 112 are worked out in the flange plate 110, positioned coaxially to the recesses 104 in the connection flange 103 and designed for the implementation of the fastening means 105 for the installation of connectors for connection to a device wall, a control panel or the like.

At the point at which the actuating element 108 is arranged, a recess 113 extends radially outward from the insertion opening 111, through which the actuating element 108 can protrude onto the front side of the flange plate 110.

The outer edge 114 of the flange plate 110 is bent up in the direction of the housing 101 and covered - this can be seen better in the rear view of the built-in connector in FIG. 13 and in the cross section of FIG. 15 - the outer edge of the connecting flange 103. Point to the rear of the flange plate 110 the mounting bores 112, preferably socket-shaped extensions 115, in the direction of the connecting flange 103 and preferably extending to the point of contact with this connecting flange 103.

At positions which correspond to the holding bores 106 of the connecting flange 103, the flange plate 110 has holding pegs 116 protruding in the direction of the housing 101.

Their ends are designed to be inserted and fixed in the holding bores 106 of the connecting flange 103. At most, they can also be inserted into the holding bores 106 completely and up to the contact with the housing wall, control panel or the like and act as spacers from.

Immediately inserted between the flange plate 110 and the connecting flange 103 of the housing 101 and held clamped between these components is a preferably plat ten-like seal 117 for sealing against the device wall G, the control panel or WO 2021/058131 PCT / EP2020 / 025428

The like. This seal 117 has a central recess 130 which at least corresponds in size to the insertion opening 102 and which is arranged coaxially to it. The central cutout 130 is preferably delimited by a circumferential sealing lip 118 which protrudes radially into the plug-in opening 102 and seals the annular gap of the plug-in opening 102 when the complementary plug connector is plugged in.

The edge 119 of the seal 117 is bent up in the area of the flange plate 110 and the connection flange 103 in the direction of the housing 101 and overlaps with this bent edge strip 119 over the outer peripheral edge of the connection flange 103. On the other hand, the bent edge 119 of the seal 117 itself is again covered by the bent outer edge 114 of the flange plate 110. The relative thicknesses of the seal 117 and connecting flange and the height of the outer edge 114 are selected such that, in the assembled state, the circumferential edge 114 of the flange plate 110 protrudes up to the height of the rear of the connecting flange 103 of the housing 101 and that in the direction of the housing 101 protruding edge 119 of the seal 117 over the entire circumference of the connecting flange 103 projects beyond its rear surface and is finally pressed against the wall of the device housing, the control panel or the like during the assembly of the built-in connector and fulfills the sealing function. At the location of the mounting bores 112 of the flange plate or the recesses 104 of the connecting flange 103, through-openings 120 are also made in the seal 117.

As can be seen clearly in FIGS. 17 and 18, in a preferred embodiment of the invention, the inside of the bent-up edge 114 of the flange plate 110 is chamfered towards the outside. The seal 117, or rather its bent-up edge 119, is also bevelled towards the outside, preferably complementary to the bevel of the flange plate 110. As shown in FIG. 18, when the fastening screw 105 is tightened during the assembly of the built-in connector, the edge 119 of the log device 117 to the device wall G, the control panel or the like. Pressed, but the seal is preferably completely covered by the flange plate 110 and protected. Alternatively, a construction according to FIG. 22 could also be selected in which, in the assembled state, the circumferential edge 114 of the flange plate 110 ends in front of the level of the rear side of the connecting flange 103 of the housing 101 and a circumferential, WO 2021/058131 PCT / EP2020 / 025428

- 25 - Outwardly protruding sealing edge 131 covers at least part of the thickness of the edge 114 of the flange plate 110 which is bent up in the direction of the housing 101.

As is also clearly shown in FIGS. 17 to 19, according to a preferred embodiment, the seal 117 has sealing grommets 121 formed on the seal 117 at the locations of the mounting bores 112, which protrude towards the rear of the flange plate 110. These seals 121 extend in the assembled state inside the mounting bores 112 of the flange plate 110, in particular also inside its socket-shaped extension 115, the outside diameter of which preferably corresponds to the inside diameter of the mounting hole 112 or the extension 115. The inner diameter is determined here in the section in which the shaft of the fastening means, preferably the threaded section of a fastening screw 105, is received in the mounting hole 112. In the unloaded state, the sealing grommets 121 end - as shown in FIG. 17 - slightly above the lower edge of the receiving area for the head of the fastening screw 105 in the mounting hole 112. After the fastening screw 105 has been tightened, the material of the seal will fill 121 between the fastening screw 105 , which is tightened up to the stop on the inside of the mounting hole 112 of the flange plate 110, and the flange plate 110 is squeezed and thereby seals the area of the screw head.

The inner diameter of the seal 121 should preferably be greater than the outward diameter of the fastening means, in particular of the fastening screws 105, this outer diameter being the nominal diameter of the thread. The inner diameter of the through opening 120 of the sealing grommets 121 should at least correspond to the outer diameter of the fastening screws 105 in the unloaded state, as shown in FIG. When the fastening screw 105 is fully tightened, however, the sealing sleeve 121 is compressed and the material of the sealing sleeve 121 rests against the inner wall of the mounting hole 112 and penetrates between the threads of the fastening screw 105, resulting in the state shown in FIG. 18. Together with the form fit in the area of the screw head, this results in an optimal sealing effect over the entire height of the sealing grommet 121. WO 2021/058131 PCT / EP2020 / 025428

- 26 -

At the positions of the holding bores 106 on the connecting flange 103, the seal 117 preferably has domes 122 which rise above its surface and which, when the built-in connector is in the assembled state, cover the rings 107 in contact. To lead through the retaining pegs 116 of the flange plate 110, these domes 122 have central openings 123, the diameter of which is advantageously somewhat smaller than the diameter of the retaining bore 106 and / or the section of the retaining peg 116 to be inserted into the retaining bore 106.

As a further structure rising above the surface of the seal 117, there is a strip 124 or protuberance surrounding the sealing lip 118 for the insertion opening 102 and the central recess 130 radially on the outside. This bar 124 is taken up in the assembled state of seal 117 and flange plate 110 in a corresponding groove 125 which surrounds the insertion opening 111 coaxially. In the area in which, in the assembled state, the actuating element 108 protrudes through the flange plate 110, the bar 124 goes into a dome 126 which also extends over the upper surface of the seal 117 and its height even further above the height of the bar 124. This dome 126, which is advantageously made in one piece with the seal 117, also protrudes beyond the front of the flange plate 110 and allows the user to actuate the operating element 108 and thus to release the locking of the complementary connector plugged into the built-in connector, which extends from the locking element 109 in the insertion opening 102 of the housing 101 is held. In addition to the sealing of the insertion opening 102 when the complementary connector plugged in by the sealing lip 118 of the seal 117, there was also a desire for the possibility of a seal in the unmated state. For this purpose, at least one radially protruding connecting strip is formed on the seal 117, protruding under the edge region 114 of the flange plate 110 which is bent over towards the housing 101. Preferably - as shown in the figures - two such connecting strips 127 are formed on the seal 117 in an approximately parallel or slightly V-shaped arrangement. A sealing plug 128 is attached to the outer end of this connecting strip 127, the outer diameter of which corresponds at most to the inner diameter of the insertion openings 102, 111 and WO 2021/058131 PCT / EP2020 / 025428

- 27 - which is preferably slightly larger than the inner diameter of the sealing lip 118 of the seal 117, which seals the insertion opening 102. The sealing plug 128 is preferably designed in the shape of an open cup. For easier handling of the sealing plug 128, a full-surface gripping tab 129 protrudes from the side of the sealing plug 128 opposite the connecting strip 127. This gripping tab 129 is also designed to be open, pot-shaped, with its opening oriented in the same direction as the dome 126 sealing the actuating element 108 and lying in a line with this dome 126 and the central axis of the insertion opening 102. When the connecting strips 127 are folded over to insert the sealing plug 128 into the insertion opening 2, the dome 126 is simultaneously covered and protected by the pot-shaped grip tab 129.

22 shows a cross section through a further embodiment of a built-in connector with a stepped beveled sealing edge.

WO 2021/058131 PCT / EP2020 / 025428

- 28 -

SIGNS OF SIGNS OF REQUIREMENTS

1 housing 36 projection

2 insertion opening 37 peripheral edge

3 connecting flange 38 receptacle

4 recess 39 passage

5 seal 40 passage

6 contact carrier 101 housing

7 Lid 102 insertion opening

8 contact elements 103 connecting flange

9 Ground contact 104 recess

10 locking element 105 fastening screw

11 Outer housing part 106 Holding hole

12 Inner housing part 107 ring

13 Annular gap 108 actuating element

14 bottom 109 locking element

15 Actuating element 110 flange plate

16 Cutout 111 insertion opening

17 sealing lip 112 mounting hole

18 Plate-shaped part 113 recess

19 Passage 114 Curved edge

20 recess 115 Socket-shaped extension

21 All-round web 116 retaining pin

22 Sealing grommets 117 Seal

23 Circular web 118 sealing lip

24 recess 119 bent-up edge

25 bulge 120 through opening

26 recess 121 sealing grommet

27 Cathedral 122 Cathedral

28 connecting strips 123 central opening

29 sealing plug 124 strip

30 grip tab 125 groove

31 Photo 126 Dom

32 Feedthrough 127 connecting strips

33 light guides 128 sealing plugs

34 Implementation 129 Gripping tab

35 Sealing housing 130 Central cutout / 058131 PCT / EP2020 / 025428

-29-

131 sealing edge

G device wall

Claims

WO 2021/058131 PCT / EP2020 / 025428

- 30 -

P a t e n t a n s p r ü c h e

1. Electrical connector, in particular built-in connector, for mounting on the back of a device wall, control panel or the like., Comprising a housing (1) with at least one insertion opening (2) for a complementary connector, preferably a cable connector, with the plug-in end of the Housing (1) a cantilevered connection flange (3) protrudes, the recesses (4) for the implementation of fasteners, a seal (5) with a central cutout (16) in the area of a plug-in opening (2) along its circumference is delimited by a sealing lip (17) which protrudes radially into the insertion opening (2), and with passages (19) for the implementation of fastening means, coaxial with the recesses (4), characterized in that the insertion-side surface of the Connection flange (3) and all structures on the plug-in side within the boundary of the connection flange (3) are covered by the seal (5). 2. Connector according to claim 1, characterized in that in connec tion flange (3) a recess for the seal (5) is excepted and limited by a web (21) extending along its outer peripheral edge on the connecting flange (3). 3. Connector according to claim 2, characterized in that the seal (5) substantially completely fills the recess and the web (21) has a height which is slightly smaller than the thickness of the seal along its peripheral edge.

4. Connector according to claim 1, characterized in that a sealing housing (35) is pushed from the rear over the housing (1) and the connecting flange (3), the connecting flange (3) being provided by a front peripheral edge on the plug-in side ( 37) of the sealing housing (35) is included, which protrudes from the front of the connecting flange (3) together with the seal (5) towards the front. 5. Connector according to one of claims 2 to 4, characterized in that the inner side of the web (21) or peripheral edge (37) is chamfered outwards, and the outer side of the seal (5) is chamfered complementarily thereto.

6. Connector according to one of claims 1 to 5, characterized in that the recess also contains the recesses (4) for the implementation of the fastening means. WO 2021/058131 PCT / EP2020 / 025428

- 31 -

7. Connector according to claim 6, characterized in that on the seal (5) on the insertion side, the passages (19) for the implementation of fastening means surrounding sealing grommets (22) are formed, which in the installed state of the connector within the mounting holes of a device wall, control panel or Like., come to rest.

8. Connector according to claim 7, characterized in that the outer diameter of the seal fill (22) corresponds to the inner diameter of the fastening bores. 9. Connector according to claim 7 or 8, characterized in that the inner diameter of the seal fill (22) corresponds to the outer diameter of the fastening means ent.

10. Connector according to one of claims 1 to 9, characterized in that the insertion opening (2) at least over part of its circumference, preferably over more than 80% of its circumference, by a plug-in side over the bottom of the recess for the seal (5 ) is limited uplifting, circular web (23), the seal (5) having a recess (24) for the web (23). 11. Connector according to claim 10, characterized in that the seal

(5) has a bulge (25) rising up on the plug-in side for receiving the web (23), which when the connector is installed comes to lie within the mounting hole of a device wall, control panel or the like. 12. Connector according to one of claims 1 to 11, characterized in that in the connecting flange (3) starting from the insertion opening (2) a recess (26) extends radially outwards, through which an actuating element (15) in the assembled and installed state For a locking mechanism for the complementary connector from the housing (1) to the outside through the device wall, control panel or the like. Protrudes, with a dome which is formed on the seal (5) and also protrudes outwards through the device wall, control panel or the like (27) the actuating element (15) covers.

13. Connector according to claim 12, characterized in that the dome (27) is a portion of the bulge (25). WO 2021/058131 PCT / EP2020 / 025428

- 32 -

14. Connector one of claims 1 to 13, characterized in that at least one radially protruding connecting strip (28) is formed on the seal (5), at the outer end of which a preferably cup-shaped sealing plug (29) is attached, the outer diameter of which is slightly larger is than the inner diameter of the sealing lip (17) of the central cutout (16).

15. Seal for use with an electrical connector, in particular a built-in connector, for mounting on the back of a device wall, control panel or the like., In particular for a connector according to one of claims 1 to 14, with a cutout (16) in the region of an insertion opening (2) of the connector comes to rest and which is delimited along its circumference by a sealing lip (17) which protrudes radially into the cutout (16), and with passages (19) for the implementation of fastening means, characterized in that a plate-shaped part (18) of the seal (5) is designed to cover the front, plug-in-side surface of the connecting flange (3) of the connector.

16. Seal according to claim 15, characterized in that the seal (5) is designed to be inserted into a recess in the surface of a connecting flange (3) of the connector on the plug-in side.

17. A seal according to claim 15 or 16, characterized in that the device (5) on the plug-in side, the passages (19) for the implementation of fasteners to give sealing grommets (22) are formed, which in the installed state of the connector within the mounting holes a device wall, control panel or the like. To come to rest.

18. Seal according to claim 17, characterized in that the outer diameter of the seal fill (22) corresponds to the inner diameter of the fastening bores ent.

19. Seal according to claim 17 or 18, characterized in that the inner diameter of the seal fill (22) corresponds to the outer diameter of the fastening means ent. WO 2021/058131 PCT / EP2020 / 025428

- 33 -

20. Seal according to one of claims 15 to 19, characterized in that the seal (5) has a protruding bulge (25) on the plug-in side, which in the installed state of the connector within the mounting hole of a device wall, control panel or the like. To lie comes.

21. Seal according to one of claims 15 to 20, characterized in that a dome (27) is formed on the seal (5), which in the installed state protrudes outward through the device wall, control panel or the like. 22. Seal according to claim 21, characterized in that the dome (27) is a

Section of the bulge (25) is.

23. Seal according to one of claims 15 to 22, characterized in that at least one radially protruding connecting strip (28) is formed on the seal (5), at the outer end of which a preferably cup-shaped sealing plug (29) is attached, the outer diameter of which is slightly is larger than the inner diameter of the sealing lip (17) of the central cutout (16).

24. Seal according to claim 23, characterized in that on the side of the sealing plug (29) opposite the connecting strip (28) a full-surface grip tab (30) protrudes, which is preferably designed in the shape of a pot.

25. An electrical connector, in particular a built-in connector, comprising a housing (101) with an insertion opening (102) for a complementary connector, with a protruding connecting flange at the insertion end of the housing (101)

(103) protrudes, which has recesses (104) for the implementation of fastening means (105), an insertion-side flange plate (110) with an insertion opening (111) for the complementary connector and with mounting holes (112) for connection to a device wall ( G), a switchboard or the like, and a seal (117) inserted between the connecting flange (103) and the flange plate (110) with a central cutout (130) in the area of the insertion opening (102), and at least one fastening means (105) for fixing the housing (101), flange plate (110) and seal (117) to the device wall (G), control panel or the like, characterized in that the outer edge (114) of the flange plate (110) in the direction of the housing (101 ) is bent up and covers the outer edge of the connecting flange (103), and the seal (117) with a circumferential sealing lip (118) WO 2021/058131 PCT / EP2020 / 025428

- 34 - protrudes radially into the insertion opening (102) and has an edge (119) bent up in the direction of the housing (101), which overlaps the outer peripheral edge of the connecting flange (103) and which itself extends from the outer edge (114) of the flange plate (110 ) is covered, whereby in the assembled state the circumferential edge (114) of the flange plate (110) protrudes up to the height of the rear of the connecting flange (103) of the housing (101) and the edge (101) protruding in the direction of the housing (101). 119) of the seal (117) over the entire circumference of the connecting flange (103) protrudes beyond its rear surface.

26. Connector according to claim 25, characterized in that the inside of the outer edge (114) of the flange plate (110) bent up in the direction of the housing (101) is beveled towards the outside, and that the outer side of the circumferential edge (119) of the seal ( 117) is also beveled to the outside, preferably complementary to it. 27. Connector according to claim 25, characterized in that in the assembled state the circumferential edge (114) of the flange plate (110) ends in front of the height of the rear side of the connecting flange (103) of the housing (101) and a circumferential edge towards the outside The protruding sealing edge (131) covers at least part of the thickness of the edge (114) of the flange plate (110) which is bent up in the direction of the housing (101).

28. Connector according to claim 25, characterized in that at the points of the mounting bores (112) on the seal (117) seal (121) are formed, which protrude in the direction of the flange plate (110) out, which stood in the assembled to the seal (121) extend within the mounting bores (112) of the flange plate (HO), the outer diameter of which preferably corresponds to the inner diameter of the assembly bore (112), and the sealing grommets (121) above the lower edge of the receiving area for the head of the fastener (105) end in the mounting hole (112). 29. Connector according to claim 28, characterized in that the inner diameter of the seal (121) corresponds to a minimum of the outer diameter of the fastening means (105). WO 2021/058131 PCT / EP2020 / 025428

- 35 -

30. Connector according to one of claims 25 to 29, characterized in that the flange plate (110) in the direction of the housing (101) has holding pins (116) protruding, that the connecting flange (103) has corresponding holding bores (106) into which the Ends of the retaining pegs (116) can be inserted, the retaining bores (106) running in the center of rings (107) rising above the connecting flange (103) and the seal (117) these rings (107) with centrally open ones resting on them Domes (122) covered.

31. Connector according to claim 30, characterized in that the central opening (123) of the dome (122) has a slightly smaller diameter than the Hal tebohrung (106) and / or the outer diameter of the retaining pin (116).

32. Connector according to one of claims 25 to 31, characterized in that the flange plate (110) has a circumferential groove (125) surrounding the insertion opening (111), in which groove (125) a sealing lip (118) for the insertion opening (102) radially outwardly surrounding strip (124) rising above the surface of the seal (117) is received.

33. Connector according to one of claims 25 to 32, characterized in that in the flange plate (110) from the insertion opening (111) a recess (113) extends radially outward through which an actuating element (108) for a locking mechanism (108, 109) protrudes from the housing (101) outwards onto the front side of the flange plate (110), a dome (126) rising radially to the insertion opening (111) above the surface of the seal (117) through the recess (113) outwards onto the front of the flange plate

(110) extends and the actuating element (8) is covered by the dome (126).

34. Seal (117) for an electrical connector, in particular a built-in connector, specifically a connector according to one of claims 1 to 9, for sealing against a device wall (G), control panel or the like., With a central cutout (130) on the Location of the plug-in opening (102) of the connector and recesses (120) at the locations of mounting bores (12) for the connector, characterized in that a sealing lip (118) surrounding the central cutout (130) encircles the inner circumference WO 2021/058131 PCT / EP2020 / 025428

- 36 - of the central cutout, and on a rear side of the seal (117) there is a bent back edge (119) which rises above the rear surface of the seal (117) and on which a circumferential sealing structure is arranged or which itself is the sealing structure forms.

35. Seal according to claim 34, characterized in that the sealing structure comprises a circumferential sealing strip, the outside of the circumferential edge (119) of the seal (117) preferably being beveled towards the outside. 36. Seal according to claim 34 or 35, characterized in that the

Sealing structure is a circumferential sealing edge that protrudes radially outward.

37. Seal according to one of claims 34 to 36, characterized in that at positions for the implementation of fastening means (105) above the front surface of the seal (117) sealing grommets (121) with central passages (120) for the Fastening means (105) are arranged.

38. Seal according to one of claims 34 to 37, characterized in that at positions for the implementation of spacer pins (116) over the front surface of the seal (117) rising domes (122) with central passages (123) for the Spacer pins (116) are arranged.

39. Seal according to one of claims 34 to 38, characterized in that a dome (126) which rises radially adjoining the central cutout (130) over the front surface of the seal (117) is arranged and is preferably in one piece with the seal (117 ) is executed.

40. Seal according to one of claims 34 to 39, characterized in that a strip (124) surrounding the central cutout (130) radially on the outside and rising above the front surface of the seal (117) is provided.

41. Seal according to one of claims 34 to 40, characterized in that at least one radially protruding connecting strip (127) is formed on the seal (117), at the outer end of which a preferably cup-shaped sealing plug (128) is attached, WO 2021/058131 PCT / EP2020 / 025428

- 37 - whose outside diameter is slightly larger than the inside diameter of the sealing lip (118) of the central cutout (130).

42. Seal according to claim 41, characterized in that on the side of the sealing plug (128) opposite the connecting strip (127) protrudes a full-surface grip tab (129) which is preferably pot-shaped.