Closure for an electrical connector, system with an electrical connector and a closure, use of a closure for watertight closing and sealing of an electrical connector

Abstract

Closure (2), in particular closure cover, for the watertight closure of an opening (6) formed by an electrical connector (3), wherein the closure (2) has a connecting device (10) which corresponds to a connecting section (7) of the connector (3), and wherein the closure (2) can be reversibly connected to the connector (3) by rotating the connecting device (10) relative to the connecting section (7) of the connector (3), preferably forming a bayonet connection, wherein the closure (2) has a clamping device (12) which is rotatable relative to the connecting device (10), whereby a sealing arrangement (11) of the closure (2) can be clamped against the opening (6), wherein the connecting device (10) and the clamping device (12) have mutually complementary threads (10B, 12B), so that rotation of the clamping device (12) relative to the connecting device (10) causes the clamping and / or a translational movement of the sealing arrangement (11), wherein the clamping device (12) is designed in a ring-like manner, wherein the connecting device (10) has an external thread (10B) and the clamping device (12) has a corresponding internal thread (12B), and the closure (2) has a positioning device (13) which is designed to determine a position and / or orientation of the sealing arrangement (11) relative to the opening (6) of the connector (3) and / or to prevent a rotational movement of the sealing arrangement (11) when attaching the closure (2) to the connector (3).

Description

[0001] The present invention relates to a closure for an electrical connector, a system comprising an electrical connector and a closure according to the preamble of patent claim 8, and a use of a closure for watertightly closing or sealing an electrical connector according to the preamble of patent claim 10.

[0002] Electrical connectors are used to connect or disconnect lines for electrical current. Two corresponding connectors are inserted into each other to create an electrical connection. A distinction is made between female connectors, which have contact openings, and male connectors, which have corresponding contact pins that are inserted into the corresponding contact openings to establish the electrical connection. However, it is also possible for a connector to have both contact openings and contact pins, in which case the corresponding connector also has corresponding contact openings and pins, allowing the connectors to be connected.

[0003] For example, two corresponding connectors can be provided at each cable end, allowing the cables to be connected or disconnected as needed. An electrical connector can also be permanently installed, for example, in a device housing, a wall, or similar. A permanently installed socket connected to a mains power supply is one example.

[0004] Connectors are often used outdoors or are permanently installed outdoors, for example, connectors on freestanding charging stations for electric vehicles. This poses the problem of adequately protecting or securing them against external environmental influences. In particular, the connectors must be protected against water ingress, as water can penetrate the connector and damage or destroy the underlying electronics. Furthermore, there is a high safety risk if the connector is live and comes into contact with water.

[0005] A known solution is to provide a closure on the connector that seals the connector and can be opened or removed to connect the connector to a corresponding connector.

[0006] Depending on the area of application, different requirements must be met by such a closure. For example, it may be sufficient to seal the connector in such a way that it is protected against rain and / or splash water. However, such protection may not be sufficient in certain circumstances. For example, in areas prone to flooding or inundation, it must be ensured that a connector is protected against water ingress even when it is under water, i.e. submerged. This is the case, for example, with so-called shore power columns or shore connection columns that are installed near bodies of water to supply watercraft with electrical power. Such protection can also be advantageous or necessary for other applications, such as charging stations for electric vehicles.

[0007] It is known to provide a bayonet connection between the closure and the connector to secure the closure to the connector. The bayonet connection is designed in such a way that the closure is drawn towards the connector with a seal when the bayonet connection is established, i.e., when a positive connection is created between the closure and the connector. However, a seal created in this way may still be inadequate.

[0008] GB 250,793 A relates to a closure for bottles and other receptacles or containers. The closure has pins that can engage with corresponding slots in the container. This creates a bayonet closure. The closure also has a screw with an external thread that is screwed into a corresponding internal thread of the closure. By turning the screw, a pressure plate and a sealing ring are pressed against an opening edge of the container, creating an airtight and liquid-tight connection.

[0009] US 113,137 A relates to a cap for the spout of an oil canister. The cap can be screwed onto the spout or alternatively connected via a bayonet lock. The cap also has a screw that is passed through the center of the cap from above and is connected to a washer at its lower end. By turning the screw, the plate can be pressed against the opening of the spout, thus closing it. The cap also has two openings. To pour out oil, the cap does not have to be removed. Instead, simply turn the screw so that the plate lifts off the opening. The spout is then released, and oil can be poured through the spout and the openings in the cap.

[0010] US Pat. No. 632,410 A relates to vessels and other receptacles, particularly made of earthenware. The vessel has a lid designed to prevent the escape of odors and gases and the ingress of air. The lid is attached to the vessel via a bayonet lock. The lid is connected to a pin. The pin is located in a rotatable sleeve with an external thread, and a frame is screwed onto the sleeve. Turning the pin and sleeve causes the lid to be pressed down.

[0011] US 3,434,615 A relates to a plastic centrifuge bottle in which a portion of its wall tapers outward toward the opening, with a closure tapering inward toward its end entering the opening and carrying a plurality of sealing rings, as well as means for securing the closure to the bottle and enforcing the seals. The closure is ultimately secured against slipping out by screwing on a cap using an adapter, so that the sealing rings do not lose their sealing effect if the closure slips out.

[0012] WO 2015 / 109 383 A1 relates to a device for securing access to a tank cap of a fuel tank, comprising a surrounding element for engaging below the tank cap of a filler neck and a cap for engaging in the surrounding element above the tank cap (e.g. using three equidistant screws).

[0013] Against this background, it is the object of the present invention to provide a closure for the watertight closure of an opening formed by an electrical connector, which ensures a particularly tight closure or sealing of the connector and can be used in particular in areas at risk of flooding and flooding.

[0014] This object is achieved by a closure according to claim 1, a system according to claim 8 or a use according to claim 10. Advantageous further developments are the subject of the dependent claims.

[0015] A proposed closure has a connecting device that corresponds to a connecting section of the connector. A positive, reversible connection between the closure and the connector can be formed via the connecting device and the corresponding connecting section, preferably by rotating the connecting device relative to the connecting section. A bayonet connection is particularly preferably formed in this case. In particular, the connecting device of the closure and the connecting section of the connector represent mutually corresponding parts of a bayonet connection. However, other solutions are also possible, for example, a screw connection in which the closure is screwed onto the connector. The connecting section and the connecting device are then designed as mutually corresponding screw threads.

[0016] According to the proposal, the closure comprises a clamping device that is movable relative to the connecting device, whereby a sealing arrangement of the closure can be clamped against the connector or its opening. Actuating or moving the clamping device relative to the connecting device causes the sealing arrangement to be clamped against the connector or its opening. This preferably enables a particularly tight closure or sealing of the connector or the opening by the closure, so that the connector or its opening is protected against water ingress.

[0017] Preferably, after the connection between the closure and the connector has been established, the sealing arrangement can be clamped (even further) against the connector or its opening and / or the clamping device can be actuated or the seal can be produced when the positive connection between the closure and the connector has already been established.

[0018] The connecting device and the clamping device can preferably be actuated sequentially or independently of each other. The establishment of the connection between the closure and the connector and the establishment of the (final) seal are preferably decoupled from each other.

[0019] This is conducive to particularly tight closing or sealing, since the sealing arrangement can be further clamped against the connector or its opening even after the connection has been made, so that a greater force effect and thus better sealing is possible.

[0020] Particularly preferably, the closure is designed to seal the connector or its opening against water ingress during, in particular, permanent submersion. In particular, no water penetrates the connector sealed with the closure, even if it is completely submerged. A connector sealed with a proposed closure or an electrical device with such a sealed connector, for example, a charging station for electric vehicles or a shore power station for watercraft, is preferably protected against water ingress even during flooding or inundation. In particular, the closure is designed to close or seal the connector or its opening in a flood-tight or pressure-tight manner.

[0021] The closure preferably protects the connector from water ingress even if the connector closed with the closure is permanently submerged, in particular if it is more than 2 m, 5 m or 10 m under water. In this case, “permanent submersion” is preferably submersion for longer than 30 minutes, in particular longer than two hours, particularly preferably longer than one day, and most preferably for any desired period of time. The closure is particularly preferably designed so that a connector closed with it meets protection class IP 68 according to ISO 20653 or DIN EN 60529. The terms “when submerged”, “permanent”, “highly watertight” and “water pressure-tight” used in the description are preferably to be understood accordingly.

[0022] According to the first aspect of the present invention, the clamping device is rotatable relative to the connecting device in order to clamp the sealing arrangement against the opening. This allows for the relative movement of the clamping device to the connecting device for clamping the sealing arrangement in a particularly simple manner.

[0023] Preferably, the connecting device and the clamping device are arranged coaxially with each other. In particular, the rotation of the connecting device to establish the positive connection between the closure and the connector, on the one hand, and the rotation of the clamping device to clamp the sealing arrangement against the opening, on the other hand, occur around the same (rotational) axis, or the closure is designed for this purpose. Particularly preferably, the closure is designed so that these rotations occur in the same direction of rotation, for example, clockwise. This ensures, in particular, that the connecting device cannot accidentally become loose when the clamping device is rotated.

[0024] Preferably, the axis(es) of rotation of the connecting device (for establishing the connection between closure and connector) and / or of the clamping device (for clamping the sealing arrangement) is / are perpendicular to the plane in which the opening of the connector lies and / or identical.

[0025] Particularly preferably, the connecting device and / or the clamping device is / are designed as a ring or as a ring(s). In particular, the connecting device and / or the clamping device (each) form a rotating body with a central recess.

[0026] Preferably, the axes of rotation of the connecting device and / or the clamping device each form a rotation axis or axis of symmetry of the respective device.

[0027] According to the first aspect of the present invention, the connecting device and the clamping device have complementary threads. This allows the clamping device to be rotated relative to the connecting device in a particularly simple manner.

[0028] The turning or rotating of the clamping device relative to the connecting device, in particular via the threads, causes the sealing arrangement to be clamped against the connector or its opening and / or a translational movement of the sealing arrangement, in particular in the direction along the axis of rotation or symmetry of the clamping device and / or connecting device.

[0029] Particularly preferably, the sealing arrangement has a contact surface against which the clamping device or a corresponding contact surface of the clamping device can be clamped, in particular by rotating the clamping device. The clamping of the clamping device against the sealing arrangement or its contact surface preferably occurs in the axial direction, i.e., the direction along the rotational or symmetry axis of the clamping device and / or connecting device.

[0030] The proposed design enables particularly good sealing, in which a rotary movement of the clamping device causes a translational movement of the sealing arrangement against the connector or its opening.

[0031] The sealing arrangement is preferably held between a first stop formed by the clamping device and a second stop formed by the connecting device. The arrangement is preferably such that complete release of the clamping device and / or sealing arrangement from the connecting device is prevented or blocked.

[0032] Particularly preferably, the sealing arrangement comprises a blocking element that forms a stop surface for the first stop and is reversibly connected to the sealing arrangement in a form-fitting and / or force-fitting manner. In particular, the blocking element can be removed as needed, allowing the closure to be disassembled, in particular allowing the clamping device, connecting device, and / or sealing arrangement to be released or separated from one another. This allows for easy replacement of components, for example, when the sealing arrangement needs to be replaced.

[0033] In addition, this allows for particularly simple assembly of the closure, in which the tensioning device, connecting device and sealing arrangement can be assembled and then permanently secured from one another by connecting the sealing arrangement to the blocking element.

[0034] Preferably, the sealing arrangement is pivotally mounted relative to the connecting device and / or clamping device. In particular, rotation of the connecting device and / or clamping device does not result in a rotational movement of the sealing arrangement. This contributes to a particularly long-lasting seal, since the sealing arrangement is only clamped or pressed against the opening of the connector to create the seal. Thus, only compression forces, but no shear forces, occur on the sealing arrangement or seal. Wear of the seal or a weakening of its sealing ability is thus prevented or at least reduced.

[0035] According to the first aspect of the present invention, the closure comprises a positioning device designed to determine or predetermine a position or orientation of the sealing arrangement relative to the opening of the connector. This enables a precise or optimal arrangement of the seal, so that the connector or its opening is or can be optimally sealed.

[0036] Alternatively or additionally, the positioning device prevents or blocks a rotational movement of the sealing arrangement when it is attached to the connector, in particular when the connecting device and / or clamping device is rotated.

[0037] This is particularly beneficial to the already mentioned reduction in seal wear.

[0038] The connector preferably has a corresponding positioning section, wherein the positioning device of the closure and the positioning section of the connector form a positive connection, for example, interlocking, so that the preferred fixing of the sealing arrangement on the connector or its opening is realized.

[0039] The closure preferably has a securing device with which the closure can be secured against detachment from the connector via a corresponding securing element of the connector. In particular, the securing device prevents the tensioning device and / or the connecting device from being moved or rotated in the secured state. To release the closure from the connector, the securing device must preferably first be released. The securing device can, for example, be an opening through which a bolt is pushed. However, other solutions are also possible. The securing device ensures that the closure is not removed accidentally or by unauthorized persons.

[0040] A further aspect of the present invention, which can also be implemented independently, relates to a system comprising an electrical connector and a closure according to the invention. This allows corresponding advantages to be achieved.

[0041] A further aspect of the present invention, which can also be implemented independently, relates to the use of a proposed closure for the watertight closure or sealing of an electrical connector, in particular such that the connector is protected from water ingress even during permanent submersion. Corresponding advantages can be achieved in this way.

[0042] The aspects of the present invention explained above and below with reference to an exemplary embodiment can be implemented and advantageous independently of one another and in any combination with one another as well as in any combination with further aspects and features of the present invention.

[0043] Further features, properties, advantages, and aspects of the present invention will become apparent from the claims and the following description of a preferred embodiment with reference to the drawing. It shows: Fig. 1 a schematic, perspective representation of a proposed closure with a corresponding connector; Fig. 2 a schematic, perspective exploded view of the closure according to Fig. 1; Fig. 3 a schematic view of the closure according to Fig. 1 from the side facing the connector in use; Fig. 4 a schematic section of the closure according to Fig. 1; and Fig. 5 one to Fig. 4 corresponding section of the closure attached to the connector.

[0044] In the figures, the same reference symbols are used for identical or similar parts and components, whereby corresponding properties, advantages and features may result, even if a repeated description is omitted.

[0045] Fig. Figure 1 shows a proposed system 1 with a proposed closure 2 and an electrical connector 3 in a schematic, perspective view. The closure 2 is in Fig. 1 not yet connected to connector 3. Fig. 5 shows a schematic section of the proposed system 1, wherein the closure 2 and the connector 3 are connected to each other, in particular wherein the connector 3 is closed or sealed in a watertight manner by the closure 2.

[0046] The connector 3 preferably has a housing 4 and / or a plug-in section 5. The plug-in section 5 is preferably arranged in the housing 4.

[0047] The housing 4 preferably forms or has an opening 6 through which the plug-in section 5 is accessible. In particular, the housing 4 has an end face 4A, from which or in which the opening 6 is formed. Preferably, the end face 4A is at least substantially annular and / or the opening 6 is at least substantially circular.

[0048] Preferably, the portion of the housing 4 adjoining the end face 4A or opening 6 is at least substantially (hollow) cylindrical. Particularly preferably, the housing 4 is at least substantially (hollow) cylindrical or has a cylindrical basic shape.

[0049] In the illustrated example, the housing 4 has a flange 4B, via which the connector 3 can be attached to a wall or the like. However, other solutions are also possible. For example, the connector 3 could also be provided at a cable end.

[0050] The plug-in section 5 is preferably designed to establish an electrical connection with a corresponding plug-in section of a corresponding electrical connector (not shown). In particular, the electrical connector 3 or its plug-in section 5 can be plugged together or connected to a corresponding connector or its plug-in section.

[0051] In the illustrated example, the plug-in section 5 forms a plurality of contact openings 5A for corresponding contact pins of a corresponding connector or plug-in section 5. However, other solutions are also possible here; for example, the plug-in section 5 can also be formed from contact pins, in which case the corresponding connector or plug-in section has corresponding contact openings. It is also possible for the plug-in section 5 to have both contact openings and contact pins, in which case the corresponding plug-in section is designed accordingly.

[0052] The contact openings 5A are preferably located in the same plane as the opening 6 or in a plane parallel to the opening 6 in the interior of the housing 4.

[0053] The plug-in section 5, in particular contact pins of the plug-in section 5, preferably does not protrude beyond the opening 6 or is arranged completely inside the housing 4.

[0054] The arrangement of the plug-in section 5 or the opening 6 on the connector 3 preferably predetermines a plug-in direction for a corresponding connector or plug-in section. The plug-in direction preferably runs perpendicular to the plane in which the opening 6 or contact openings 5A of the plug-in section 5 are located and / or parallel to the contact pins of the plug-in section 5. In particular, the plug-in direction runs along the Fig. 5 drawn axis A1 or A2.

[0055] The connector 3 or the housing 4 preferably has a connecting section 7. The connecting section 7 is formed in, on, or by the housing 4 or arranged thereon, in particular molded thereon.

[0056] The connecting section 7 is preferably designed or provided to reversibly connect a corresponding connector or the closure 2 to the connector 3 or to fasten it to the connector 3 in a form-fitting manner.

[0057] Preferably, the connector 3 or the housing 4 has a positioning section 8. The positioning section 8 preferably establishes a specific position and / or orientation for a corresponding connector or the closure 2. In particular, the positioning section 8 ensures that the corresponding connector or closure 2 can be attached to the connector 3 (only) in a predetermined position and / or orientation. This can ensure, for example, that the contact openings 5A and corresponding contact pins are aligned with each other.

[0058] In the illustrated example, the positioning section 8 of the connector 3 is preferably designed as an indentation or recess that extends particularly in the insertion direction. The closure 2 or a corresponding connector then preferably has a correspondingly projecting pin that can engage in the positioning section 8. However, other solutions are also possible here.

[0059] Optionally, the connector 3 can have a securing element 9. The securing element 9 preferably serves to secure the closure 2 or a corresponding connector against loosening when connected to the connector 3 or fastened to the connector 3. In particular, the closure 2 or a corresponding connector can only be released or removed from the connector 3 when the securing element 9 is released.

[0060] In the illustrated example, the securing element 9 is preferably designed as a projection with a hole and / or arranged on the flange 4B. However, other solutions are also possible.

[0061] Connecting section 7, positioning section 8 and securing element 9 will be explained in more detail below, particularly in connection with the fastening of the closure 2 to the connector 3.

[0062] Particularly preferably, the electrical connector 3 is standardized, in particular according to DIN EN 60309 or IEC 60309. However, the connector 3 can also be, for example, a Schuko socket or the like. Particularly preferably, the connector 3 is a CEE connector.

[0063] Fig. 2 shows a perspective exploded view of the closure 2. Fig. Figure 3 shows a schematic view of the closure 2 from the side, in the state of use or in the representation according to Fig. 5 faces the connector 3. Fig. 4 shows a schematic section of the closure 2 along the Fig. 3 drawn cutting plane.

[0064] The closure 2 is preferably designed to close, cover, and / or seal the connector 3, in particular its opening 6. The closure 2 is particularly preferably designed as a closure lid.

[0065] The closure 2 preferably has a connecting device 10, a sealing arrangement 11, a tensioning device 12, a positioning device 13 and / or a securing device 14.

[0066] The closure 2 and / or the sealing arrangement 11 preferably comprises a main body 11A, a sealing element 11B and / or a blocking element 11C.

[0067] The closure 2 or the connecting device 10 is preferably designed to be placed on the connector 3 or placed or slipped over the opening 6 or the part of the housing 4 forming the opening 6. Preferably, the closure 2 or the connecting device 10 is in the insertion or opening direction specified by the connector 3, i.e. in the direction perpendicular to the end face 4A or to the (plane of the) opening 6 or along the Fig. 5 can be placed or slipped onto the connector 3 along the axis A1 or A2 shown.

[0068] In particular, the closure 2, in particular the connecting device 10, has a closure opening 15A on one side, through which the closure 2 can be placed onto the connector 3. In the following, this side is referred to as the "lower side" of the closure 2 and, accordingly, the opposite side is referred to as the "upper side" of the closure 2. However, these designations are merely conventional. In particular, the actual orientation of the closure 2 on the connector 3 is predetermined or determined by the position of the connector 3, in particular its opening or insertion direction, which does not necessarily have to be vertical but can run in any direction. Terms used below that refer to absolute orientations in space, such as "bottom", "top", "lateral", etc., are preferably to be understood accordingly.

[0069] The closure 2 or the connecting device 10 preferably has a cavity 15. In the use state of the closure 2, the connector 3 or its housing 4 preferably protrudes into the cavity 15 or through the closure opening 15A and / or the opening 6 or end face 4A is arranged in the cavity 15.

[0070] The term "use state" refers in particular to the state in which the closure 2 is connected to the connector 3 or fastened to the connector 3. Preferably, the sealing arrangement 11 is clamped against the connector 3, the end face 4A, or the opening 6 in the use state.

[0071] In the state of use, the connecting device 10 and / or the sealing element 11B is preferably arranged on the side of the closure 2 facing the connector 3, the end face 4A or the opening 6, as shown in Fig. 5 shown.

[0072] In the use state, the tensioning device 12 and / or the blocking element 11C is preferably arranged on the side of the closure 2 facing away from the connector 3, the end face 4A or the opening 6, as shown in Fig. 5 shown.

[0073] Particularly preferably, the closure 2, in particular its connecting device 10, is designed for a positively reversible connection to the connector 3, in particular its connecting section 7. In particular, the connecting device 10 and the connecting section 7 are designed to correspond to one another in order to realize the preferred positive connection.

[0074] Preferably, the connecting device 10 and the connecting section 7 are designed to engage with each other in a form-fitting manner or the connecting device 10 is designed to engage with the connecting section 7 and / or vice versa.

[0075] Particularly preferably, the closure 2 can be connected to the connector 3 by rotating the connecting device 10 relative to the connector 3 or connecting section 7. In particular, the desired positive locking can be achieved by placing the closure 2 onto the connector 3 or its opening 6, in particular in the insertion or opening direction, and then rotating the connecting device 10 relative to the connector 3 or connecting section 7, or the closure 2 or the connecting device 10 is designed for this purpose.

[0076] The rotation of the connecting device 10 preferably occurs about a (rotational) axis A1, which is preferably also an axis of symmetry of the connecting device 10 or the closure 2. The "axial direction" is preferably defined as a direction along or parallel to the axis A1.

[0077] The axis A1 preferably runs through the cavity 15 and / or in the insertion or opening direction of the connector 3 or perpendicular to the (plane of the) opening 6 and / or perpendicular to the (plane of the) closure opening 15A.

[0078] The connecting device 10 is preferably designed as a rotating body and / or as a ring or ring-like. The connecting device 10 is preferably designed to be rotationally symmetrical with respect to the axis A1.

[0079] Particularly preferably, the connection between the connecting device 10 and the connecting section 7 is designed as a bayonet connection or the connecting device 10 and the connecting section 7 are designed as mutually corresponding parts of a bayonet connection.

[0080] However, other solutions are also possible here. For example, the connecting device 10 and the connecting section 7 can be designed as mutually corresponding threads that form a screw connection.

[0081] In the illustrated example, the connecting device 10 has one or more connecting elements 10A, which are designed in particular as lugs or projections extending in the radial direction. The "radial direction" here is the direction perpendicular to the axis A1.

[0082] In the illustrated example, the connecting device 10 has in particular two opposing connecting elements 10A, as for example in Fig. 3 shown. Fig. 4 and Fig. 5 each show the section through these connecting elements 10A. However, other solutions are also possible here.

[0083] Preferably, the connecting section 7 has connecting elements corresponding to the connecting elements 10A. In the illustrated example, the connecting section 7 has grooves 7A as connecting elements, into which the corresponding connecting elements 10A or projections of the connecting device 10 can engage in a form-fitting manner.

[0084] In the illustrated example, the connecting section 7 has in particular two corresponding connecting elements or grooves 7A for the respective connecting elements 10A of the connecting device 10.

[0085] The grooves 7A are preferably at least substantially L-shaped and / or formed on the outside of the housing 4 or introduced into the housing 4.

[0086] However, other solutions are also possible here. For example, the closure 2 could also have grooves and the connecting section 7 could have corresponding projections. It is also possible for the connecting device 10 to have both projections and grooves, and the connecting section 7 to have corresponding projections.

[0087] Optionally, the connecting device 10 and / or the connecting section 7 can be designed such that the closure 2 or the sealing arrangement 11 is already pulled towards the connector 3 or its opening 6 when the connection to the connector 3 is established. For example, the grooves 7A could have a corresponding pitch. In this way, an initial (weaker) seal can already be created. However, the actual sealing or clamping of the sealing arrangement 11 against the connector 3 or opening 6 is preferably carried out by actuating or rotating the clamping device 12 when the connection between the connector 3 and the closure 2 has already been established. Pulling the closure 2 or the sealing arrangement 11 towards it when connecting the connecting device 10 to the connecting section 7 is therefore not absolutely necessary.

[0088] Particularly preferably, a corresponding connector can be reversibly fastened or connected via the connecting section 7 of the connector 3 in the same way as described for the connecting device 10 of the closure 2.

[0089] The sealing arrangement 11 is preferably arranged or can be arranged in the cavity 15 of the connecting device 10 such that it can move in the axial direction or in the direction of the opening 6 or the closure opening 15A or along the axis A1, in particular also when a (positively locking) connection has been established between the closure 2 and connector 3 or the connecting device 10 and the connecting section 7.

[0090] Preferably, the sealing arrangement 11 is movable, pressed and / or clamped against the connector 3, the opening 6 or the end face 4A, in particular so that the opening 6 is closed or sealed in a watertight manner.

[0091] The clamping device 12 can preferably be clamped against the sealing arrangement 11, whereby the sealing arrangement 11 can be moved downwards or in the direction of the opening 6 or the closure opening 15A or along the axis A1 and / or can be moved, pressed and / or clamped against the connector 3, the opening 6 or the end face 4A, in particular when the connection has been established between the closure 2 and the connector 3.

[0092] Preferably, the clamping device 12 has a particularly annular clamping element 12A, which can be clamped against the sealing arrangement 11.

[0093] Preferably, the sealing arrangement 11, in particular the main body 11A, has a particularly annular contact surface 11D for the clamping device 12, in particular the clamping element 12A. In particular, the clamping device 12 or the clamping element 12A can be clamped against the contact surface 11D.

[0094] Particularly preferably, the clamping device 12 is movable, in particular rotatable, relative to the connecting device 10, wherein the relative movement of the clamping device 12 to the connecting device 10 causes the sealing arrangement 11 to be clamped against the connector 3, the opening 6 or the end face 4A.

[0095] Preferably, the closure 2 is designed such that when the clamping device 12 moves relative to the connecting device 10, the clamping device 12 or the clamping element 12A is pressed or tensioned against the sealing arrangement 11 or its contact surface 11D, so that the sealing arrangement 11 is pressed in the direction of the closure opening 15A or the connector 3 or the opening 6 or downwards.

[0096] Particularly preferably, the clamping device 12 is rotatable relative to the connecting device 10 and / or the sealing arrangement 11.

[0097] The rotation of the clamping device 12 preferably takes place about an axis A2, which is preferably also an axis of symmetry of the clamping device 12 or the closure 2.

[0098] The clamping device 12 is preferably designed as a rotating body and / or as a ring or ring-like. The clamping device 12 is preferably designed to be rotationally symmetrical with respect to the axis A2.

[0099] The axis A2 preferably runs in the insertion or opening direction of the connector 3 or perpendicular to the (plane of the) opening 6 and / or perpendicular to the (plane of the) closure opening 15A.

[0100] Preferably, the connecting device 10 and the clamping device 12 are arranged concentrically to one another or have the same axis of rotation and / or axis of symmetry A1, A2. Particularly preferably, the axis A1 of the connecting device 10 and the axis A2 of the clamping device 12 are identical.

[0101] Particularly preferably, the rotation of the connecting device 10 for connecting to the connecting section 7 and the rotation of the clamping device 12 for clamping the sealing arrangement 11 takes place about the same axis and / or in the same direction of rotation, for example clockwise, or the closure 2 is designed for this purpose.

[0102] The connecting device 10 and the clamping device 12 preferably have at least substantially the same outer diameter.

[0103] The outer diameter of the connecting device 10 and / or the clamping device 12 is preferably greater than 90 mm, in particular greater than 100 mm, and / or less than 150 mm, in particular less than 120 mm.

[0104] The longitudinal extent of the connecting device 10 and / or clamping device 12 along the axis A1 or A2 is preferably smaller than the outer diameter of the connecting device 10 and / or clamping device 12. Preferably, the longitudinal extent of the connecting device 10 and the clamping device 12 is at least substantially equal.

[0105] Preferably, the closure 2 is designed such that the rotational movement of the clamping device 12 relative to the connecting device 10, in particular about the axis A2, causes a translational movement of the clamping device 12 and / or the sealing arrangement 11 relative to the connecting device 10, in particular downwards or in the direction along the axis A2 or in the direction of the opening 6 or closure opening 15A.

[0106] Particularly preferably, the connecting device 10 and the clamping device 12 each have mutually corresponding threads 10B, 12B, in particular fine threads.

[0107] Preferably, the connecting device 10 and the clamping device 12 are connected via threads 10B, 12B so as to be movable relative to one another, or the threads 10B, 12B realize or enable a screw connection between the connecting device 10 and the clamping device 12 and / or the preferred relative movement of the devices 10, 12 to one another. However, other solutions are also possible here. For example, the mobility of the clamping device 12 relative to the connecting device 10 could also be achieved via a bayonet connection with a pitch or the like.

[0108] The pitch of the threads 10B, 12B is preferably less than 5 mm, in particular less than 2 mm, and / or greater than 0.5 mm, in particular greater than 1 mm.

[0109] In the illustrated example, the connecting device 10 preferably has an external thread 10B and the clamping device 12 has a corresponding internal thread 12B. However, solutions are also possible in which, conversely, the connecting device 10 has an internal thread 10B and the clamping device 12 has an external thread 12B.

[0110] Preferably, the connecting device 10 has a holding section 10C on the side facing the clamping device 12, with a diameter that is smaller than the side facing away from the clamping device 12 and / or with a diameter that is smaller than the closure opening 15A. The clamping device 12 is preferably held on the holding section 10C or connected thereto.

[0111] The holding section 10C preferably has the thread 10B along its outer diameter. The inner diameter of the clamping device 12, at least in the region of the thread 12B, preferably corresponds to the outer diameter of the holding section 10C of the connecting device 10.

[0112] The outer diameter of the holding section 10C or the corresponding inner diameter of the clamping device 12 or the diameters of the threads 10B, 12B are preferably greater than 20 mm, in particular greater than 40 mm, and / or less than 100 mm, in particular less than 80 mm, particularly preferably at least substantially 60 mm.

[0113] By means of the threads 10B, 12B or the screw connection formed thereby, it is preferably realized that a rotational movement of the clamping device 12 relative to the connecting device 10 causes a translational movement of the clamping device 12 or of the clamping element 12A relative to the connecting device 10, in particular in the direction along the axis A1 or A2.

[0114] Particularly preferably, the clamping device 12 is screwed or can be screwed onto the connecting device 10, in particular its holding section 10C.

[0115] The clamping device 12 preferably has one or more engagement devices 12C into which a corresponding tool (not shown) can engage. In the illustrated example, the engagement devices 12C are preferably designed as engagement holes or bores, in particular arranged in a circular manner, in the clamping device 12, in particular its upper side.

[0116] Preferably, a torque can be exerted on the clamping device 12 via the engagement devices 12C. In particular, a tool acting on the clamping device 12, in particular the engagement devices 12C, can exert a greater force than is possible by manually rotating the clamping device 12 without a tool. Preferably, the clamping device 12 or sealing arrangement 11 can be clamped so tightly that it can only be released again with the tool.

[0117] Preferably, the tensioning device 12 can only be operated with a tool once the seal has been created. In particular, the tool is a special tool for the closure 2, so that the tensioning device 12 can only be operated by authorized personnel.

[0118] The sealing arrangement 11, in particular the main body 11A, is preferably at least substantially stamp-shaped. In particular, the sealing arrangement 11 or the main body 11A has a flange-like or plate-like or disc-like support section 11E on the side facing the closure opening 15A or the connector 3 or the opening 6, or on the lower side.

[0119] The sealing arrangement 11 preferably projects through the holding section 10C. The support section 11E and / or the sealing element 11B preferably project beyond the opening formed by the holding section 10C, in particular on the side facing the closure opening 15A.

[0120] The main body 11A or support section 11E preferably carries or holds the sealing element 11B and / or the sealing element 11B is preferably arranged or fastened, in particular glued, to the main body 11A, in particular support section 11E.

[0121] The sealing element 11B is preferably designed as a disc or disc-like or flat.

[0122] The sealing element 11B is preferably designed to completely cover the opening 6 of the connector 3. In particular, the diameter of the sealing element 11B is larger than the diameter of the opening 6.

[0123] The diameter of the support section 11E and / or the sealing element 11B is preferably greater than 60 mm, in particular greater than 75 mm and / or less than 110 mm, in particular less than 95 mm.

[0124] Particularly preferably, the sealing element 11B or the support section 11E has a shape that corresponds to the opening 6 or the end face 4A. If the end face 4A is square, the sealing element 11B or the support section 11E can, for example, also be at least substantially square.

[0125] In the illustrated example, the opening 6 or end face 4A is at least substantially circular, wherein the opening 6 deviates from the circular shape at a location where the positioning section 8 is provided. Preferably, the sealing element 11B or the carrier section 11E also deviates from the circular shape at a corresponding location, as shown in particular in Fig. 2. In particular, the sealing element 11B and / or the support section 11E has a projection to completely cover the positioning section 8. However, other solutions are also possible here; for example, the sealing element 11B and / or the support section 11E could also be circular with a correspondingly enlarged diameter.

[0126] The sealing element 11B is preferably made of an elastic material. The sealing element 11B is preferably made of an elastic plastic or rubber, particularly preferably synthetic rubber, most preferably acrylonitrile butadiene rubber.

[0127] If necessary, the elastic sealing element 11B can also be omitted. In this case, the main body 11A or its support section 11E can preferably be pressed or clamped directly against the opening 6 or end face 4A. In particular, the support section 11E can then be considered a (non-elastic) sealing element 11B.

[0128] Optionally, it is also possible to design the main body 11A or parts of the main body 11A, in particular the support section 11E, to be elastic.

[0129] The sealing arrangement 11 is preferably held movable between the connecting device 10 and the clamping device 12.

[0130] Preferably, the connecting device 10 and / or clamping device 12 (each) forms a stop for the sealing arrangement 11. Particularly preferably, the clamping device 12, in particular the clamping element 12A, forms a first, in particular annular, stop 12D and the connecting device 10 forms a second, in particular annular, stop 10D for the sealing arrangement 11.

[0131] The sealing arrangement 11 is preferably held movable between the first stop 12D and the second stop 10D, in particular in the axial direction.

[0132] The second stop 10D is preferably formed by a particularly annular surface of the connecting device 10, which faces the cavity 15 or is opposite the closure opening 15A or whose surface normal points downwards.

[0133] The second stop 10D preferably forms a stop for the main body 11A, in particular the support section 11E, of the sealing arrangement 11.

[0134] The second stop 10D preferably prevents a movement of the sealing arrangement 11 upwards or in the direction of the clamping device 12 when the sealing arrangement 11, in particular the main body 11A or its support section 11E, rests against the stop 10D.

[0135] The first stop 12D is preferably formed by a particularly annular surface of the clamping device 12, the surface normal of which points upwards, and / or by the side of the clamping element 10A facing away from the contact surface 11D or the connecting device 10.

[0136] The first stop 12D preferably prevents a movement of the sealing arrangement 11 downwards or in the direction of the closure opening 15A, in particular relative to the clamping device 12, when the sealing arrangement 11, in particular a stop surface 11F of the sealing arrangement 11, rests against the first stop 12D.

[0137] Particularly preferably, the particularly annular stop surface 11F, with which the sealing arrangement 11 can strike the first stop 12D, is formed by the blocking element 11C.

[0138] Preferably, the blocking element 11C, in particular the stop surface 11F, projects beyond the stop 12D or the clamping element 12A.

[0139] Preferably, the blocking element 11C is or can be reversibly connected to the sealing arrangement 11 or the main body 11A in a form-fitting and / or force-fitting manner.

[0140] In the illustrated example, the blocking element 11C is screwed into the sealing assembly 11 or the main body 11A. However, other solutions are also possible. For example, the blocking element 11C could also be pressed into the main body 11A.

[0141] Preferably, the connecting device 10, the sealing arrangement 11 and / or the clamping device 12 are non-detachably connected to one another when the blocking element 11C is mounted or connected to the sealing arrangement 11 or the main body 11A.

[0142] Preferably, the blocking element 11C can only be removed from the sealing arrangement 11 or the main body 11A using a special tool. In the illustrated example, the blocking element 11C has engagement devices or holes for such a tool.

[0143] By removing the blocking element 11C, the closure 2 can preferably be dismantled.

[0144] In particular, when the blocking element 11C is removed, the sealing arrangement 11 has no stop surface 11F for the stop 12D. Accordingly, the clamping device 12 can then be completely unscrewed from the connecting device 10 and / or the sealing arrangement 11 can be removed.

[0145] During assembly of the closure 2, the tensioning device 12 is preferably connected to the connecting device 10, in particular screwed thereon, and the sealing arrangement 11 or the main body 11A, in particular with the sealing element 11B already connected, is pushed from below through the connecting device 10, in particular through the closure opening 15A and / or the holding section 10C. Subsequently, the sealing arrangement 11 or the main body 11A is preferably connected from above to the blocking element 11C, in particular screwed, so that the connecting device 10, the sealing arrangement 11, and / or the tensioning device 12 are permanently connected to one another when the blocking element 11C is mounted.

[0146] However, other solutions are also possible in which the stop surface 11F is formed directly by the main body 11A or in which the blocking element 11C is non-detachable and / or formed integrally with the main body 11A.

[0147] In the assembled state of the closure 2, the tensioning device 12 is preferably held non-detachably on the connecting device 10. In particular, the tensioning device 12 cannot be separated from the connecting device 10, in particular cannot be unscrewed, since the tensioning device 12 is held non-detachably on the connecting device 10 via the sealing arrangement 11.

[0148] The clamping device 12 is preferably movable relative to the sealing arrangement 11 only by the distance between the stop surface 11F and the contact surface 11D. As soon as the clamping device 12, in particular the clamping element 12A or the first stop 12D, comes into contact with the stop surface 11F, the clamping device 12 and the sealing arrangement 11 can preferably only be moved upwards together. However, this movement is preferably limited by the sealing arrangement 11, in particular the support section 11E, coming into contact with the stop 10D, so that the clamping device 12 cannot be released from the connecting device 10.

[0149] The sealing arrangement 11 is preferably pivotally mounted relative to the connecting device 10 and / or the clamping device 12. In particular, the closure 2 is designed such that rotation of the connecting device 10 and / or the clamping device 12 does not result in rotation of the sealing arrangement 11.

[0150] Particularly preferably, the closure 2 is designed such that, when the closure 2 is connected to the connector 3 and / or the sealing arrangement 11 is clamped against the connector 3 or its opening 6, the sealing arrangement 11 is moved only perpendicular to the (plane of the) opening 6 or along the axis A1 or A2 or in the axial direction and / or is rotationally fixed relative to the connector 3 or the opening 6. In particular, no shear forces occur on the sealing arrangement 11 or the sealing element 11B.

[0151] The positioning device 13 of the closure 2 is preferably designed to correspond to the positioning section 8 of the connector 3.

[0152] In the illustrated example, the positioning device 13 is preferably designed as a pin that engages or can engage with the positioning section 8, which is preferably designed as a recess. However, other solutions are also possible. For example, the positioning section 8 of the connector 3 can also be designed as a pin and the positioning device 13 correspondingly as a recess, hole, or the like.

[0153] Preferably, the positioning device 13 and / or the positioning section 8 extends in the insertion or opening direction or perpendicular to the (plane of the) opening 6 or closure opening 15A and / or parallel to the axis A1 or A2.

[0154] The positioning device 13 preferably predetermines or fixes the position and / or orientation of the closure 2 on the connector 3. In particular, the closure 2 can only be placed on the connector 3 in the position and orientation in which the positioning device 13 engages the positioning section 8, or vice versa. The positioning device 13 preferably prevents or blocks the closure 2 from being placed on the connector 3 in a different position or orientation.

[0155] Preferably, the positioning device 13 and the positioning section 8 must be aligned along a common axis, which is in particular parallel to the axis A1 or A2, in order to place the closure 2 on the connector 3. In Fig. 1, the closure 2 is shown in the position and orientation in which it can be placed on the closure 2.

[0156] The positioning device 13 is preferably connected or connectable in a form-fitting and / or material-fitting manner to the sealing arrangement 11, in particular the main body 11A or its support section 11E. In the illustrated example, the positioning device 13 is preferably screwed into the sealing arrangement 11, in particular the main body 11A or support section 11E. However, other solutions are also possible.

[0157] The positioning device 13 is preferably sealed by the sealing element 11B, in particular circumferentially. In particular, the positioning device 13 extends through the sealing element 11B.

[0158] Preferably, the positioning device 13 is arranged such that it extends perpendicular to the main extension plane of the sealing element 11B or support section 11E.

[0159] Preferably, the positioning device 13 ensures that the main extension plane of the sealing element 11B or carrier section 11E is aligned at least substantially parallel to the (plane of the) opening 6 or parallel to the end face 4A of the connector 3 when the closure 2 is connected to the connector 3.

[0160] Preferably, the positioning device 13 ensures that the sealing arrangement 11 or the sealing element 11B is arranged such that the opening 6 is or can be completely covered.

[0161] Preferably, the positioning device 13, in particular via the positive engagement in the positioning section 8, holds the sealing arrangement 11 in a rotationally fixed position relative to the connector 3. The sealing arrangement 11 and the connector 3 are preferably connected to one another in a rotationally fixed manner via the positioning device 13, in particular via the positive engagement in the positioning section 8.

[0162] The closure 2 is secured or can be secured against loosening, preferably on the connector 3, in particular its securing element 9, via the securing device 14.

[0163] Preferably, the connection between the connecting device 10 and the connecting section 7 is secured or can be secured against loosening, in particular relative rotation, by the securing device 14.

[0164] In the illustrated example, the securing device 14 and the corresponding securing element 9 are each designed as projections each with a hole through which a lock 16, for example a padlock, as in Fig.5. Preferably, the securing device 14 and the securing element 9 are non-releasably connected to one another via the lock 16, in particular such that rotation of the closure 2 or the connecting device 10 relative to the connector 3 or the connecting section 7 is prevented or blocked.

[0165] However, other solutions are also possible here. For example, the securing element 9 could also be designed as a bolt that can be guided through the securing device 14, or vice versa. In this case, a lock 16 can be omitted.

[0166] In the illustrated example, the securing device 14 is provided on the connecting device 10. However, other solutions are also possible here; for example, the securing device 14 or another securing device 14 can also be provided on the clamping device 12, or a common securing device 14 can be provided on the connecting device 10 and the clamping device 12, in particular such that rotation or actuation of the clamping device 12 relative to the connecting device 10 is prevented or blocked.

[0167] The closure 2, in particular the connecting device 10, the tensioning device 12, the positioning device 13, the securing device 14, the sealing arrangement 11, the main body 11A and / or the blocking element 11C, is or are preferably made of metal, in particular of a copper alloy, particularly preferably of brass, most preferably of brass with a lead content, in particular CuZn39Pb3.

[0168] Different aspects of the present invention can be realized and advantageous independently of one another and in any combination with one another. List of reference symbols: 1 system 2 closure 3 electrical connector 4 housings 4A front side 4B flange 5 plug-in section 5A contact opening 6 Opening 7 connecting section 7A groove 8 Positioning section 9 Securing element 10 Connecting device 10A connecting element 10B thread 10C holding section 10D stop 11 Sealing arrangement 11A Main body 11B Sealing element 11C Blocking element 11D contact surface 11E support section 11F stop surface 12 clamping device 12A clamping element 12B thread 12C intervention device 12D stop 13 Positioning device 14 Safety device 15 cavity 15A opening 16 Castle A1 Axis (connecting device) A2 axis (clamping device)

Claims

[1] Closure (2), in particular a closure cover, for the watertight closure of an opening (6) formed by an electrical connector (3), wherein the closure (2) has a connecting device (10) which corresponds to a connecting section (7) of the connector (3), and wherein the closure (2) can be reversibly connected to the connector (3) by rotating the connecting device (10) relative to the connecting section (7) of the connector (3), preferably forming a bayonet connection, wherein the closure (2) has a clamping device (12) which is rotatable relative to the connecting device (10), whereby a sealing arrangement (11) of the closure (2) can be clamped against the opening (6), wherein the connecting device (10) and the clamping device (12) have mutually complementary threads (10B, 12B), so that rotation of the clamping device (12) relative to the connecting device (10) causes the clamping and / or a translational movement of the sealing arrangement (11), wherein the clamping device (12) is designed in a ring-like manner, wherein the connecting device (10) has an external thread (10B) and the clamping device (12) has a corresponding internal thread (12B), and the closure (2) has a positioning device (13) which is designed to determine a position and / or orientation of the sealing arrangement (11) relative to the opening (6) of the connector (3) and / or to prevent a rotational movement of the sealing arrangement (11) when attaching the closure (2) to the connector (3). [2] Closure (2) according to claim 1, characterized bythat the connecting device (10) and the clamping device (12) are arranged coaxially to one another, so that the closure (2) is designed so that the rotation of the connecting device (10) for producing the positive connection between the closure (2) and the connector (3) and the rotation of the clamping device (12) for clamping the sealing arrangement (11) against the opening (6) takes place about the same axis (A1, A2) and in the same direction of rotation. [3] Closure (2) according to claim 1 or 2, characterized by that the connecting device (10) is ring-shaped. [4] Closure (2) according to one of the preceding claims, characterized by that the sealing arrangement (11) is held between a first stop (12D) formed by the clamping device (12) and a second stop (10D) formed by the connecting device (10), so that a complete release of the clamping device (12) from the connecting device (10) is prevented. [5] Closure (2) according to claim 4, characterized by that it has a blocking element (11C) which forms a stop surface (11F) for the first stop (12D) and is reversibly connected to the sealing arrangement (11) in a form-fitting and / or force-fitting manner. [6] Closure (2) according to one of the preceding claims, characterized by that the sealing arrangement (11) is rotatably mounted relative to the connecting device (10) and / or clamping device (12). [7] Closure (2) according to one of the preceding claims, characterized by that the closure (2) has a securing device (14) to secure the closure (2) against loosening via a corresponding securing element (9) of the connector (3). [8] System (1) with an electrical connector (3) and a closure (2), in particular a closure cover, for the watertight closure of an opening (6) formed by the connector (3), wherein the closure (2) has a connecting device (10) and the connector (3) has a connecting section (7) corresponding thereto, wherein the closure (2) can be reversibly connected to the connector (3) by rotating the connecting device (10) relative to the connecting section (7), preferably forming a bayonet connection, characterized by , that the closure (2) has a tensioning device (12) which is movable relative to the connecting device (10), whereby a sealing arrangement (11) of the closure (2) can be tensioned against the opening (6). [9] System (1) according to claim 8, characterized by that the closure (2) is designed according to one of claims 1 to 7. [10] Use of a closure (2), in particular a closure cover, for the watertight closing and sealing of an electrical connector (3), in particular when permanently submerged, wherein the closure (2) has a connecting device (10) which corresponds to a connecting section (7) of the connector (3), and wherein the closure (2) is reversibly connected to the connector (3) by rotation of the connecting device (10) relative to the connecting section (7) of the connector (3), preferably forming a bayonet connection, characterized by , that a tensioning device (12) of the closure (2) is moved relative to the connecting device (10), whereby a sealing arrangement (11) of the closure (2) is tensioned against an opening (6) of the connector (3). [11] Use according to claim 10, characterized by that a closure (2) according to one of claims 1 to 7 is used.

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