Round plug connector, use of a round plug connector, and method for producing a round plug connector

Abstract

The present invention relates to a circular connector (100) comprising: - an electrically conductive connector housing (20); - a plurality of contact conductors (10; 12), wherein the plurality of contact conductors (10; 12) comprises an equipotential bonding conductor (12); - an insulator (40), wherein the plurality of contact conductors (10; 12) is embedded at least section by section in the insulator (40); and - an equipotential bonding element (50); -- wherein the equipotential bonding element (50) receives the insulator (40) section by section, -- wherein the equipotential bonding element (50) electrically contacts the equipotential bonding conductor (12), and -- wherein the equipotential bonding element (50) is electrically connected to the connector housing (20) by means of a contact shell (30). The invention further relates to the use of such a circular connector (100), as well as a method for manufacturing such a circular connector (100).

Description

[0001] The present invention relates to a circular connector, a use of a circular connector and a method for manufacturing a circular connector.

[0002] IEC connectors, as examples of circular connectors, are known in the art. These connectors typically have at least one grounding conductor, which can also be called an equipotential bonding conductor, to connect to an equipotential bonding conductor of a complementary terminal and ground a connected device. With electrically conductive housings of circular connectors, the issue of equipotential bonding of the housing itself is particularly important to reduce potential hazards for the user when handling the connector.

[0003] US 2019 / 393652 A1 describes an electrical connector comprising a connector housing with a first outer housing part and a second outer housing part separate from the first outer housing part, a grounding contact arranged in the connector housing, and a grounding terminal separate from and arranged therein. The first outer housing part and the second outer housing part are each at least partially metallic. The grounding terminal is electrically connected to the grounding contact, the first outer housing part, and the second outer housing part.

[0004] US 11,177,616 B2 describes an electrical plug comprising a plug housing with a first outer housing part and a second outer housing part separate from the first outer housing part, a protective earth contact arranged in the plug housing, and a protective earth terminal arranged in the plug housing. The first outer housing part and the second outer housing part are each made at least partially of metal. The protective earth terminal is connected to the protective earth contact and electrically connected to the first outer housing part and / or the second outer housing part.

[0005] DE 10 2018 105 770 B4 describes a connection arrangement with at least one spring arm for producing an electrically conductive connection between a protective conductor contact arranged inside an insulating body and a metal housing that at least partially surrounds the insulating body from the outside, wherein the spring arm has at least one elastic contact area and a contact formation of the contact area projects at least partially out of the insulating body to contact an inner surface of the metal housing.

[0006] It is therefore an object of the present invention to provide a circular connector with improved equipotential bonding and a method for manufacturing a circular connector with improved equipotential bonding. In other words, it is particularly an object to provide a circular connector having an electrically conductive housing with improved equipotential bonding, and a method for manufacturing a circular connector configured with an electrically conductive housing with improved equipotential bonding.

[0007] The problem is solved by the subject matter of the independent claims. Preferred embodiments are described in the dependent claims.

[0008] The claimed invention is defined by a circular connector according to claim 1, by the use of a circular connector according to claim 9, and by a method for manufacturing a circular connector according to claim 10.

[0009] One aspect of the invention relates to a circular connector comprising: an electrically conductive connector housing; a plurality of contact conductors, wherein the plurality of contact conductors comprises an equipotential bonding conductor; an insulator, wherein the plurality of contact conductors is embedded at least section by section in the insulator; and an equipotential bonding element; -- wherein the equipotential bonding element receives the insulator section by section, -- wherein the equipotential bonding element electrically contacts the equipotential bonding conductor, and -- wherein the equipotential bonding element is electrically connected to the connector housing by means of a contact shell.

[0010] Advantageously, the present circular connector provides, in particular, equipotential bonding, especially protective equipotential bonding, for the electrically conductive connector housing, wherein the electrically conductive connector housing is conductively connected to the equipotential bonding conductor, particularly in this series, via the contact shell and the equipotential bonding element. This allows a fault current, fault voltage, or other overvoltage to be advantageously diverted or dissipated from the electrically conductive connector housing, via the equipotential bonding element, to the equipotential bonding conductor, thus advantageously protecting a user. The equipotential bonding conductor can, in particular, correspond to an earthing conductor, which in this case is configured to earth the circular connector and, in particular, the connector housing of the circular connector.

[0011] The present circular connector, by means of the equipotential bonding element, which partially encloses the insulator and is electrically connected to the equipotential bonding conductor and electrically connected to the connector housing, advantageously provides improved equipotential bonding for the circular connector, particularly for circular connectors with an electrically conductive connector housing. This advantageously provides equipotential bonding for the electrically conductive connector housing, thus enabling safe handling of the circular connector by the user.

[0012] InIn exemplary embodiments, the connector housing can be electrically conductive, in particular made of or consisting of a metal, or made of or consisting of an electrically conductive plastic, and therefore be particularly electrically conductive. The electrically conductive connector housing, which, for example, makes of or consists of a metal, advantageously provides shielding for the majority of contact conductors, so that the present circular connector advantageously enables a connection that is both reliable to operate and has low or at least less interference-prone.

[0013] The equipotential bonding conductor of the present circular connector can be configured, in particular, to provide equipotential bonding in order to short-circuit any voltage that may occur and to dissipate any current via the equipotential bonding conductor instead of through a user. For this purpose, the equipotential bonding conductor is advantageously connected to the electrically conductive connector housing via the equipotential bonding element and the contact shell. The equipotential bonding conductor, which is connected to the electrically conductive connector housing by means of the equipotential bonding element and the contact shell, makes it particularly advantageous to dissipate or discharge any overvoltage from the connector housing, for example, caused by a charged user, or any fault current flowing on or in the connector housing.

[0014] In preferred embodiments, the contact shell can be configured to make electrically conductive contact with the equipotential bonding element at least partially peripherally, and in particular partially on an outer circumference of the equipotential bonding element. This advantageously provides and ensures a short, electrically conductive connection across the entire area between the equipotential bonding conductor and the connector housing.

[0015] In exemplary embodiments, at least one, several, or all contact conductors of the plurality of contact conductors can penetrate the insulator, in particular in a longitudinal or insertion direction of the circular connector. The insulator can preferably surround or enclose the at least one, several, or all contact conductors of the plurality of contact conductors in a circumferential direction.

[0016] In particular, the insulator can be configured to distance or isolate the one or more contact conductors, which do not include the equipotential bonding conductor, from the equipotential bonding element and / or from the equipotential bonding conductor.

[0017] Several terms will be used repeatedly below, and their understanding will be facilitated by the following definitions.

[0018] Circular connector: The circular connector in this context essentially represents a connector, in particular a connector with an electrically conductive connector housing. The circular connector can, in particular, have a substantially cylindrical shape or contour, at least in sections, but is not limited to this, and can also have any contour in cross-section relative to a longitudinal direction or insertion direction of the circular connector, in particular be polygonal or be partially round and angular. The circular connector can be of either a male or female type and is in particular configured to be electrically connected to a complementary circular connector. In exemplary embodiments, the circular connector can, in particular, be or form the front connectable or pluggable end of a coaxial cable.The circular connector can, in particular, provide a screw connection and / or a push-push connection and / or a push-pull connection to a complementary circular connector or form a connection with a complementary circular connector.

[0019] Contact conductor: In this context, the contact conductor is usually used as part of a plurality of contact conductors. Colloquially, the contact conductor(s) represent one or more poles of the circular connector. The plurality of contact conductors always includes the equipotential bonding conductor and at least one contact conductor, and in particular, any number of contact conductors. The plurality of contact conductors can therefore include, in particular, an equipotential bonding conductor and one contact conductor, an equipotential bonding conductor and two contact conductors, an equipotential bonding conductor and three contact conductors, etc.

[0020] Longitudinal direction: The longitudinal direction describes, in particular, the direction in which the circular connector has its greatest extent. Furthermore, the longitudinal direction can also be the direction along which the contact conductors essentially extend, or in which the contact conductors are configured to be connected or contacted. Thus, the longitudinal direction can essentially correspond to the insertion direction of the circular connector. The insertion direction represents the direction in which the circular connector is moved relative to a complementary circular connector to establish an electrically conductive contact between the circular connector and the complementary circular connector.

[0021] Circumferential direction: The circumferential direction is a direction that is essentially perpendicular to the longitudinal direction or mating direction. In particular, the circumferential direction can essentially correspond to a direction along a circumference of the circular connector or a direction along an outer contour of the circular connector in a cross-section of the circular connector, or a direction along the outer contour of an element of the circular connector in a cross-section of the circular connector, wherein the cross-section is essentially perpendicular to the longitudinal direction or mating direction of the circular connector. In particular, the circumferential direction can correspond to a direction tangent to a circumference of the circular connector or an element of the circular connector, especially a direction tangent to a contour of the circular connector or an element of the circular connector in a cross-section.In other words, the circumferential direction can be particularly similar to the circumferential direction of a cylinder, whereby the present circular connector is not limited to a strictly cylindrical contour.

[0022] Radial direction: The radial direction is a direction that is essentially perpendicular to the longitudinal or insertion direction and / or the circumferential direction. The radial direction can, in particular, point from an axis of the circular connector towards an outer contour or surface, especially towards an outer contour or surface of the circular connector or an element of the circular connector.

[0023] The longitudinal direction or insertion direction, together with the circumferential direction and the radial direction, can in particular form a right-handed system, especially a cylindrical coordinate system.

[0024] When a direction or angle is indicated with the addition of "essentially" or "approximately" or "about", this addition is intended to refer in particular to a deviation from the direction or angle in question in the range of 0° to 5°.

[0025] If a spatial measure, spatial ratio or other ratio is given with the addition of "essentially" or "approximately" or "about", this addition is intended to indicate, in particular, a deviation from the measure or ratio in question in the range of 0% to 10%.

[0026] In preferred embodiments of the circular connector, the equipotential bonding element can have a substantially ring-shaped cross-section which is configured to contact the contact shell at least section by section along a circumferential direction of the equipotential bonding element.

[0027] In other words, the equipotential bonding element can be configured, in particular, to form a contact cross-section that is at least partially annular in shape with the contact shell. The partially annular contact cross-section between the equipotential bonding element and the contact shell can, in particular, extend over a predetermined length in the longitudinal or insertion direction of the circular connector.

[0028] By at least partially contacting the equipotential bonding element and the contact shell along the circumferential direction, a surface contact between the equipotential bonding element and the contact shell is advantageously enabled.

[0029] In exemplary embodiments, the contact shell can be configured to contact the equipotential bonding element at a distal end of the equipotential bonding element, in particular at a longitudinally distal end of a lateral surface of the equipotential bonding element.

[0030] In further exemplary embodiments, the equipotential bonding element can be completely enclosed in the contact shell with respect to its longitudinal extent. Additionally or alternatively, the contact shell can be configured, in particular, to hold or fix the equipotential bonding element longitudinally.

[0031] In preferred embodiments of the circular connector, the equipotential bonding element can have an equipotential bonding conductor opening in which the equipotential bonding conductor is received at least partially. wherein the equipotential bonding element preferably has an equipotential bonding conductor collar, wherein the equipotential bonding conductor collar is arranged around the equipotential bonding conductor opening, and wherein the equipotential bonding conductor is at least partially received in the equipotential bonding conductor collar, and wherein the equipotential bonding element is preferably crimped to the equipotential bonding conductor, and / or crimped to the insulator.

[0032] The equipotential bonding element, which accommodates the insulator section by section, allows the insulator with the embedded contact conductors to be advantageously positioned or aligned relative to the equipotential bonding element.

[0033] The equipotential bonding conductor collar makes it advantageous to guide the equipotential bonding conductor and, in particular, to make electrically conductive contact over a large area.

[0034] Furthermore, crimping the equipotential bonding element to the equipotential bonding conductor allows for a secure and reliable electrical connection. Specifically, crimping the equipotential bonding element to the equipotential bonding conductor creates a positive and / or frictional connection between the element and the conductor. Alternatively or additionally, the equipotential bonding element and conductor can be joined using a material bond, for example, by soldering and / or bonding with an electrically conductive adhesive.

[0035] The aforementioned connection types advantageously ensure an electrically conductive contact between the equipotential bonding element and the equipotential bonding conductor, so that an advantageous equipotential bonding of the circular connector, in particular an earthing of the circular connector, can be ensured by means of the equipotential bonding element.

[0036] Crimping the equipotential bonding element to the insulator allows the insulator to be advantageously and securely fixed to the equipotential bonding element. In particular, the insulator can be configured to penetrate the equipotential bonding element section by section, especially longitudinally. Following this section-penetrating arrangement, the equipotential bonding element can be crimped to the insulator and / or otherwise connected to it by a material bond, friction bond, and / or positive locking mechanism. This allows a predetermined position of the insulator on the equipotential bonding element to be fixed and secured, which particularly facilitates further assembly of the circular connector, such as attaching terminals to the majority of contact conductors.

[0037] In exemplary embodiments, the equipotential bonding conductor opening can be arranged on an end face of the equipotential bonding element, in particular on an end face facing away from the insertion direction of the circular connector.

[0038] In particular, the equipotential bonding element can have a sectioned end face, especially the end face facing away from the insertion direction of the circular connector, wherein the equipotential bonding conductor opening is preferably arranged in the sectioned end face. Furthermore, the sectioned end face is preferably configured to separate and / or space the equipotential bonding conductor from one or more contact conductors of the plurality of contact conductors.

[0039] This allows the equipotential bonding element to advantageously distance the equipotential bonding conductor from the other contact conductor(s) and facilitates further assembly of the circular connector, in particular the connection of terminals to the majority of contact conductors.

[0040] In exemplary embodiments, the equipotential bonding collar of the equipotential bonding element can be crimped to the equipotential bonding conductor. The equipotential bonding collar can extend, in particular, from the equipotential bonding conductor opening in a direction that is essentially parallel to the longitudinal direction or insertion direction of the circular connector. Furthermore, the equipotential bonding collar can extend, in particular, from the partially closed section of the equipotential bonding element in a direction that is essentially parallel to the insertion direction of the circular connector.

[0041] This advantageously ensures safe routing of the equipotential bonding conductor and a reliable electrically conductive connection between the equipotential bonding conductor and the equipotential bonding element. Furthermore, the equipotential bonding conductor collar facilitates the crimping of the equipotential bonding element to the equipotential bonding conductor due to its particularly good accessibility.

[0042] In preferred embodiments of the circular connector, the equipotential bonding element can be positively locked to the insulator in the insertion direction of the circular connector, and / or the equipotential bonding element can be positively locked to the insulator in the circumferential direction of the circular connector.

[0043] In other words, the equipotential bonding element can be positively connected to the insulator with respect to the insertion direction or the longitudinal direction of the circular connector, and additionally or alternatively, it can be positively connected to the insulator with respect to the circumferential direction of the circular connector.

[0044] This allows the insulator to be securely fixed to the equipotential bonding element, ensuring that both the equipotential bonding conductor embedded in the insulator and the insulator itself are fixed to the equipotential bonding element. This advantageously ensures improved durability of the connection between the equipotential bonding element and the equipotential bonding conductor, particularly the electrically conductive connection between the equipotential bonding element and the equipotential bonding conductor.

[0045] To further enhance this effect, the insulator and equipotential bonding conductor can preferably be arranged in a form-fitting manner at different points on the equipotential bonding element, in particular at different points on the equipotential bonding element with respect to the longitudinal direction or the insertion direction.

[0046] In exemplary embodiments, one of the insulator and the equipotential bonding element can have a projection, and the other of the insulator and the equipotential bonding element can have a recess, wherein the projection and the recess are configured to engage, in particular such that the projection and the recess form a positive fit with respect to the insertion direction of the circular connector and / or a positive fit with respect to the circumferential direction of the circular connector.

[0047] In preferred embodiments, the insulator can, in particular, have a projection and be configured to engage with a recess of the equipotential bonding element, especially such that the projection of the insulator is positively engaged with the recess of the equipotential bonding element with respect to the circumferential direction. Additionally or alternatively, the projection can be configured to be positively engaged with the recess with respect to the insertion direction or longitudinal direction.

[0048] In exemplary embodiments, the recess can in particular provide or form a stop in the insertion direction or longitudinal direction for the projection.

[0049] The aforementioned design of the projection and the recess allows the insulator to be securely connected to the equipotential bonding element. Furthermore, the insulator and the equipotential bonding element can be easily aligned or positioned relative to each other, which particularly facilitates the subsequent assembly of the circular connector, especially the connection of the multiple contact conductors embedded in the insulator.

[0050] Preferably, the recess or projection of the insulator can be arranged or formed on an outer surface, in particular a radially outer surface of the insulator. More preferably, the recess or projection of the equipotential bonding element can be arranged or formed on an outer surface, in particular a radially outer surface of the equipotential bonding element. If at least one of the aforementioned connecting elements is arranged on a radially outer surface of the respective element, the assembly of the equipotential bonding conductor and insulator can be advantageously facilitated by improved securing and accessibility.

[0051] In embodiments of the circular connector, the equipotential bonding element has a first opening which is configured to receive a first section of the insulator, wherein the first section of the insulator may preferably extend section by section through the first opening of the equipotential bonding element, and wherein the contact conductors of the majority of contact conductors may be at least partially embedded in the first section of the insulator without the equipotential bonding conductor.

[0052] By having the first section of the insulator received by the first opening of the equipotential bonding element, it is advantageous to ensure that the insulator is positioned on the equipotential bonding element, whereby the equipotential bonding element makes electrically conductive contact exclusively with the equipotential bonding conductor of the majority of contact conductors.

[0053] By having the first section of the insulator extend section by section through the first opening of the equipotential bonding element, a secure, positive-locking connection between the equipotential bonding element and the insulator can advantageously be provided, whereby a positive lock can be provided with respect to one or more directions which are essentially perpendicular to the direction or directions along which the insulator extends section by section through the first opening.

[0054] By embedding the contact conductors of the majority of the contact conductors, excluding the equipotential bonding conductor, at least partially in the first section of the insulator, with the first section of the insulator being accommodated in the first opening of the equipotential bonding element, precise positioning or arrangement of the contact conductors in the circular connector can advantageously be ensured. This can advantageously facilitate further assembly of the circular connector, such as, in particular, the arrangement of connections to the contact conductors.Furthermore, by embedding only those contact conductors at least partially in the first section of the insulator which do not correspond to the equipotential bonding conductor, a safe separation of the equipotential bonding conductor from the other contact conductor(s) can be advantageously provided, as well as a safe separation of the equipotential bonding element from the other contact conductor(s).

[0055] In preferred embodiments, the first opening can be arranged on an end face of the equipotential bonding element, in particular on an end face facing away from the insertion direction of the circular connector.

[0056] In exemplary embodiments, the first opening can be arranged at a distance from the equipotential bonding conductor opening, particularly in the radial direction. This advantageously ensures that the equipotential bonding conductor is spaced apart from the other contact conductor(s).

[0057] In exemplary embodiments, the first opening can be substantially semicircular. In other words, the first opening can form a substantially semicircular opening in an end face of the equipotential bonding element, particularly on or in an end face facing away from the insertion direction of the circular connector. In exemplary embodiments, the first opening of the equipotential bonding element can be configured to form an end face with the first partially closed section of the equipotential bonding element, particularly the end face of the equipotential bonding element that is located on the end face facing away from the insertion direction of the circular connector.

[0058] According to the invention, the equipotential bonding element has a recess, wherein the recess is configured to engage with a projection of the insulator in the insertion direction of the circular connector, such that the projection is configured to engage with the equipotential bonding element in front of the first section of the insulator when the insulator and the equipotential bonding element are mounted.

[0059] In other words, the equipotential bonding element has a recess, wherein, when the equipotential bonding element is mounted with the insulator in the plug-in direction, a projection of the insulator is configured to engage at least partially with the recess before a first section of the insulator, in which in particular the contact conductors without the equipotential bonding conductor may be partially embedded, partially engages with a first opening of the equipotential bonding element, in particular at an end face of the equipotential bonding element.

[0060] This allows the recess of the equipotential bonding element, in conjunction with the projection of the insulator, to advantageously provide a coding for assembly, which can be configured in particular to enable a precise fit of the insulator with the first opening on the front face of the equipotential bonding element.

[0061] In exemplary embodiments, the recess of the equipotential bonding element can be formed, in particular, on an outer surface, especially a radially outer surface of the equipotential bonding element; in other words, on a lateral surface of the equipotential bonding element. This can advantageously facilitate visibility during the installation of the projection on the recess.

[0062] The engagement of the projection into the recess and the first section of the insulator into the first opening of the equipotential bonding element refers in particular to at least partial penetration. The engagement may, but does not necessarily have to, include a behind-engagement. In exemplary embodiments, however, behind-engagement connections between the recess and the projection, and / or between the first section and the first opening, may also be provided. If the insulator comprises an elastomer or another deformable material, such as a plastic, the engagement may, in particular, be a friction-fit engagement, which includes a partial behind-engagement due to possible restorable deformation, especially elastic restorable deformation and demolding of the insulator.

[0063] In preferred embodiments of the circular connector, the equipotential bonding element can be arranged in a form-fitting manner on the contact shell.

[0064] In particular, the potential equalization element can be arranged in a form-fitting manner on the contact shell with respect to the insertion direction of the circular connector.

[0065] In exemplary embodiments, one of the contact shell and the equipotential bonding element can have a groove, in particular a groove extending substantially circumferentially, and in particular extending section by section substantially circumferentially, and the other of the contact shell and the equipotential bonding element can have a projection, in particular a projection projecting substantially radially, and preferably extending substantially circumferentially, and in particular extending section by section substantially circumferentially. The projection can be configured to engage in the groove when the contact shell is mounted on the equipotential bonding element. In other words, when the contact shell is mounted on the equipotential bonding element, the groove can be configured to receive the projection, at least section by section.

[0066] The projection, which extends essentially in a radial direction, and the groove, which extends essentially along the circumferential direction, advantageously provides a positive-locking connection between the contact shell and the potential equalization element, particularly with regard to the insertion direction or longitudinal direction of the circular connector.

[0067] Due to the positive locking arrangement of the potential equalization element on the contact shell, the potential equalization element can advantageously be securely positioned and held on the contact shell.

[0068] In exemplary embodiments, the equipotential bonding element can have a projection, wherein the projection, in particular, extends substantially outwards in a radial direction and at least partially along the circumferential direction. The projection can, in particular, be a radially outwardly projecting step, which, in particular, projects radially outwards relative to the remaining part of the equipotential bonding element. Furthermore, the projection can, in particular, be arranged at a distal end of the equipotential bonding element, especially at an end distal to the insertion direction. The contact shell can, in particular, have a groove configured to receive the projection of the equipotential bonding element, at least partially. The groove can, in particular, be configured to receive the projection in a form-fitting manner, especially with respect to the insertion direction of the circular connector.The groove of the contact shell can extend substantially in the circumferential direction. In particular, the groove can be arranged on an inner circumferential side of the contact shell and / or the projection of the equipotential bonding element can be arranged on an outer circumferential side of the equipotential bonding element.

[0069] To engage in a form-fitting manner, the projection and groove can, for example, form or create a bayonet fitting.

[0070] Alternatively or additionally, the contact shell can be designed in multiple parts to engage the projection on multiple sides during radial assembly, corresponding to the multiple parts of the contact shell. The multi-part configuration of the contact shell can, in particular, correspond to a configuration similar to several circular segments. The contact shell can, in particular, have a substantially hollow cylindrical or truncated conical shape or contour. A part of the multi-part, substantially hollow cylindrical or truncated conical shape or contour of the contact shell can, in particular, be a segment along the circumferential direction of the substantially hollow cylindrical or truncated conical shape or contour of the contact shell or correspond to it.In particular, a section of, for example, a two-piece contact shell can, without limitation, form substantially 180° of the circumference of the contact shell, or a section of, for example, a three-piece contact shell can, without limitation, form substantially 120° of the circumference of the contact shell. This angular division can, in particular, apply to several or all sections of a multi-piece contact shell. Alternatively, in exemplary embodiments, a section of, for example, a two-piece, three-piece, or four-piece contact shell can form an angle in the range of approximately 10° to approximately 180° of the circumference of the contact shell, and the other sections of the contact shell can be configured to form or complete the circumference of the contact shell up to 360°.In further exemplary embodiments, the contact shell can be formed in one piece, but with several subsections or subshells, which can be connected to each other, for example, by means of one or more film hinge(s), in particular by means of one or more film hinge(s) in the circumferential direction.

[0071] In preferred embodiments of the circular connector, the contact shell can comprise two or more sub-shells which, in an assembled state, form the contact shell.

[0072] By comprising two or more partial shells, in particular by being formed from two or more partial shells, the assembly of the contact shell and the equipotential bonding element can be advantageously facilitated, in particular by enabling the simple realization of positive locking connections between the equipotential bonding element and the contact shell.

[0073] In preferred embodiments, the contact shell comprises two sub-shells which, in the assembled state, form the contact shell. The two sub-shells can be formed in one piece or in multiple pieces. In other words, the two sub-shells can be designed as separate sub-shells or, for example, as a single piece, with the two sub-shells connected to each other by film hinges.

[0074] Additionally or alternatively, the partial shells can be configured to be connected to each other by friction, form-fitting, and / or material bonding, for example by means of resilient, especially engaging, spring arms, by means of clips, by means of a soldered or welded connection, etc. Furthermore, the partial shells can be configured to form a contact shell that is at least partially continuous in the circumferential direction only when assembled in the circular connector.

[0075] If the partial shells are configured as single pieces, this advantageously simplifies handling during assembly, as one partial shell can be placed against the equipotential bonding element, and the other partial shell(s) can be folded or attached to the equipotential bonding element.

[0076] If the partial shells are configured in multiple pieces, this increases the manufacturing tolerance to allow them to be assembled together into the connector housing of the circular connector. The partial shells can, for example, be configured to only make contact with each other circumferentially once assembled in the connector housing, particularly to establish electrically conductive contact.

[0077] In preferred embodiments of the circular connector, the circular connector can be an IEC connector, preferably a 230 V IEC connector, and the circular connector can preferably have three contact conductors.

[0078] The configuration of the circular connector as an IEC connector, in particular as a 230 V IEC connector, for example with three contact conductors, advantageously makes it possible to provide an IEC connector with an electrically conductive connector housing, which has both improved shielding and safe equipotential bonding, in particular safe grounding, and thus safe handling.

[0079] While the preferred example IEC connector has three contact conductors—one equipotential bonding conductor and two non-equipotential bonding conductors—an alternative IEC connector may, in particular, have one equipotential bonding conductor and any number of additional contact conductors. For example, the circular connector may, in particular, include one equipotential bonding conductor and additionally one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, or more contact conductors, wherein these additional contact conductor(s) are not equipotential bonding conductors.

[0080] Another aspect of the invention relates to the use of a circular connector according to the preceding aspect with regard to the circular connector for electrical connection with a connection complementary to the circular connector.

[0081] The aforementioned aspects regarding the circular connector, as well as its preferred, exemplary and alternative embodiments, and their effects, relate equally to the use of the circular connector, and vice versa.

[0082] Another aspect of the invention relates to a method for manufacturing a circular connector, in particular for manufacturing a circular connector according to the preceding aspect regarding the circular connector, the method comprising the steps: - Providing a plurality of contact conductors and an electrically conductive connector housing; - Arranging the plurality of contact conductors in an insulator; - Pressing a potential equalization element onto the insulator; - Electrically connecting the potential equalization element to a potential equalization conductor of the plurality of contact conductors; and - Arranging the potential equalization element on a contact shell configured to electrically connect the potential equalization element to the connector housing. wherein the equipotential bonding element has a first opening configured to receive a first section of the insulator, and wherein the equipotential bonding element has a recess configured to engage with a projection of the insulator in the insertion direction of the circular connector, such that the projection is configured to engage with the equipotential bonding element in front of the first section of the insulator when the insulator and the equipotential bonding element are mounted.

[0083] In preferred embodiments of the method for manufacturing a circular connector, the method comprises the aforementioned steps, in particular in exactly this order, i.e., first providing the plurality of contact conductors, then arranging the plurality of contact conductors in the insulator, then electrically connecting the equipotential bonding element to the equipotential bonding conductor, and then arranging the equipotential bonding element on the contact shell.

[0084] In exemplary embodiments, the method may in particular include a step of arranging a contact shell with a potential equalization element in a connector housing, particularly after the step of arranging the potential equalization element on the contact shell.

[0085] This advantageously allows for efficient creation of the plug connection.

[0086] In preferred embodiments, the arrangement of the equipotential bonding element on the contact shell can, in particular, comprise a positive-locking arrangement of the equipotential bonding element on the contact shell. This enables the contact shell and the equipotential bonding element to be securely mounted together in the connector housing.

[0087] Additionally or alternatively, the step of electrically connecting the equipotential bonding element to the equipotential bonding conductor may in particular include a step of crimping the equipotential bonding conductor, especially a step of crimping the equipotential bonding conductor at an equipotential bonding conductor opening and / or an equipotential bonding conductor collar of the equipotential bonding element.

[0088] Additionally or alternatively, the step of pressing the equipotential bonding element onto the insulator can in particular include a step of positively aligning the insulator with the equipotential bonding element with respect to the circumferential direction and / or the insertion direction of the circular connector.

[0089] Furthermore, or alternatively, the step of arranging the majority of contact conductors in the insulator can in particular include a step of embedding the contact conductors in the insulator, at least section by section.

[0090] The aforementioned aspects concerning the circular connector and its use, as well as its preferred, exemplary and alternative embodiments, and their effects, relate equally to the method for manufacturing a circular connector, and vice versa.

[0091] The following describes embodiments of the invention in more detail with reference to the accompanying figures. It is understood that the present invention is not limited to these embodiments and that individual features of the embodiments can be combined to form further embodiments within the scope of the accompanying claims.

[0092] It shows: Figure 1 is an oblique view of a section through a circular connector according to an embodiment of the present invention; Figure 2a is an oblique view of a partial section through a circular connector according to an embodiment of the present invention; Figure 2b is an oblique view of a further partial section through a circular connector according to an embodiment of the present invention; Figure 3a is an oblique view of a potential equalization element and an insulator of a circular connector according to an embodiment of the present invention; Figure 3b is an oblique view of a potential equalization element and part of a contact shell of a circular connector according to an embodiment of the present invention; Figure 4 is an oblique view of a potential equalization element of a circular connector according to an embodiment of the present invention;and Figure 5 a flowchart of a method for manufacturing a circular connector according to the present invention.

[0093] Fig. 1 Figure 1 shows an oblique view of a section through a circular connector 100, according to an embodiment of the present invention. As shown in Figure 2 Fig. 1 As shown, the circular connector 100 has a substantially elongated extent and a substantially cylindrical or substantially round cross-sectional shape. An example is shown in Fig. 1 A female configuration of the circular connector 100, according to an embodiment of the present invention, is shown. The illustrations and explanations in the present Figures 1 to 5 Apart from the male or female configuration of the terminals 15, 16 arranged at the front in the plug-in direction or longitudinal direction L, refer to both a female and a male configuration of the circular connector 100.

[0094] As in Fig. 1 As shown, the circular connector 100 has, at its longitudinally L front end, in particular the terminals 15, 16 for coupling with a complementary circular connector. The terminals 15, 16 comprise, as shown in Fig. 1 shown, in particular an earthing terminal 16 which is configured, when coupled with a complementary circular connector, to connect the earthing conductor 12 of the present circular connector 100 to a complementary earthing conductor. The earthing conductor 12 as shown in Fig. 1 and shown in the other figures, and explained in connection with the figures, represents an exemplary potential equalization conductor. Furthermore, and as shown in Fig. 1As shown, terminals 15 and 16 include terminal 15 for contact conductors for conventional current conduction, which, when coupled with a complementary circular connector, is configured to connect a contact conductor 10 of the present circular connector 100 to a complementary contact conductor. The contact conductor 10, as shown in Fig. 1 and shown in the further figures, and explained in connection with the figures, denotes a contact conductor for conventional current transmission and is specifically not the earthing conductor 12 in this case. In this description, a distinction is accordingly made between the contact conductor(s) 10 for conventional current transmission and the earthing conductor 12 as a potential equalization conductor. The earthing conductor 12 and the contact conductor(s) 10 together form the plurality of contact conductors 10, 12. The circular connector 100, as shown in Fig. 1As shown, the circular connector 100 has in particular exactly two contact conductors 10 and one grounding conductor 12. In further exemplary embodiments, the circular connector 100 can in particular have exactly one grounding conductor 12 and additionally any number of contact conductors 10, in particular at least one contact conductor 10.

[0095] As in Fig. 1As shown, the contact conductors 10 and the grounding conductor 12 are embedded, at least partially, in an insulator 40. The insulator 40 can, in particular, comprise or consist of a plastic, especially an elastomer, a thermoplastic, or a thermoset. Alternatively, the insulator 40 can, for example, comprise or consist of a ceramic, cork, or a different insulating material. Furthermore, the insulator 40 can, in particular, comprise or consist of a material selected based on its tracking resistance to ensure a maximum tracking current with respect to a predetermined tracking distance of the elements adjacent to the insulator 40.

[0096] The contact leads 10 and 12 can be used, as in Fig. 1 shown, are embedded in the insulator 40 in such a way that they are spaced apart from each other by the insulator 40. Additionally or alternatively, and as shown in Fig. 1 As shown, the contact conductors 10, 12 can be embedded in the insulator 40 such that they extend through the insulator 40 in the longitudinal direction L or in the insertion direction of the circular connector 100. In other words, the contact conductors 10, 12 can be configured, in particular, to penetrate the insulator, especially in the longitudinal direction L or in the insertion direction of the circular connector 100.

[0097] As in Fig. 1 As shown, one insertion direction of the circular connector 100 can be essentially parallel to the longitudinal direction L. In other words, the circular connector 100 can be, as shown in Fig. 1 shown, in particular by means of a movement essentially in the longitudinal direction L, to be plugged into or connected to a complementary circular connector, so that the plugging direction of the circular connector 100 can be essentially parallel to the longitudinal direction L.

[0098] The following explanations regarding the circular connector 100 and in particular the grounding element 50, the insulator 40 and the contact shell 30 refer specifically to a circular connector 100 as shown in Fig. 1 The examples shown, particularly regarding the exemplary orientation with respect to the insertion direction or longitudinal direction L, radial direction R and circumferential direction U, are not limited to these. Rather, the present explanations regarding the grounding element 50, the insulator 40 and the contact shell 30 apply equally, especially to an angled connector or circular connector, as long as their functionality, as highlighted herein, is not impaired.

[0099] What's next in Fig. 1 As can be seen, the circular connector 100 has, in particular, a strain relief 24 at its end furthest from the insertion direction or longitudinal direction L, or at the end opposite the terminals 15, 16. The circular connector 100, as shown in Fig. 1 As shown, it can in particular be configured to accommodate a coaxial cable or similar on the side facing the strain relief 24, which can be attached or electrically connected with its respective conductors, in particular to the contact conductors 10, 12.

[0100] What's next in Fig. 1 As shown, the circular connector 100 has in particular a connector housing 20 which surrounds in the radial direction R, in particular the contact shell 30. In other words, the circular connector 100 has in particular a connector housing 20 which is configured to surround in the circumferential direction U, in particular the contact shell 30. As shown in Fig. 1 As shown, the contact shell 30 can be substantially cylindrical. The connector housing 20 is electrically conductive, at least partially.

[0101] As in Fig. 1As outlined, the connector housing 20 can be multilayered. The multiple layers can be interconnected in such a way that at least one outer layer in the radial direction R and at least one inner layer in the radial direction R, or a layer facing the contact shell 30, are electrically conductively connected to each other. Alternatively, the connector housing 20 can be essentially single-layered and configured to be, or become, electrically conductively connected to the contact shell 30.

[0102] To ensure safe handling of the circular connector 100, the connector housing 20 is connected to the grounding conductor 12, in particular by means of the contact element 30 and the grounding element 50. This advantageously allows a fault current to be dissipated via the grounding conductor 12, thus providing protection for a user in case of contact with the connector housing 20. At the same time, the electrically conductive connector housing 20 provides advantageous shielding for the contact conductor(s) 10, so that the present circular connector 100 advantageously enables a connection or link with or to a complementary circular connector that is both safe to operate and has low or at least less interference-prone. The connector housing 20 can, in particular, have cable shielding, especially for shielding the contact conductor(s) 10 and / or the elements or cables connected to them.In addition, the connector housing 20 may have a connection section for attaching a cable shield to it.

[0103] As in Fig. 1 As shown by way of example, the connector housing 20 can, for instance, comprise one or more gripping areas 22, which may in particular have or consist of an electrically conductive material, in particular a metal.

[0104] What's next in Fig. 1 As shown, an earthing element 50 is arranged on the insulator 40 as an equipotential bonding element, which at least partially accommodates the earthing conductor 12 and, in particular, makes electrically conductive contact with it. The earthing element 50 has, in particular, an earthing conductor opening 57 as an equipotential bonding conductor opening, which is configured to accommodate and / or guide the earthing conductor 12, and, in particular, to make electrical contact with it partially.

[0105] A grounding conductor collar 53 can be arranged or formed, in particular as an equipotential bonding conductor collar, at the grounding conductor opening 57. The grounding conductor collar 53 can be configured as shown in Fig. 1The earthing conductor collar 53 is shown, in particular extending substantially in the insertion direction or longitudinal direction L. Specifically, the earthing conductor collar 53 can extend from the earthing conductor opening 57 and substantially parallel to the insertion direction or longitudinal direction L. In other words, the earthing conductor collar 53 can extend, in particular, from an end face of the earthing element 50 facing away from the longitudinal direction L, and in a direction substantially parallel to the insertion direction or longitudinal direction L, and be configured to receive the earthing conductor 12 at least section by section. This advantageously provides a planar contact between the earthing conductor 12 and the earthing element 50. In preferred embodiments, but not limited thereto, the earthing conductor collar 53 is formed integrally with the earthing element 50.In particular, the earthing conductor collar 53 can be crimped to the earthing conductor 12, especially in the assembled state of the circular connector 100, thereby providing a particularly secure fixing or holding of the earthing conductor 12 on the earthing element 50, which also connects the earthing element 50 to the earthing conductor 12 in a secure and durable electrically conductive manner.

[0106] What's next in Fig. 1As shown, the grounding element 50 can have a first opening 58, wherein the first opening 58 can be arranged, in particular, at a distance in the radial direction R from the grounding conductor opening 57. The first opening 58 of the grounding element 50 can, in particular, be configured to receive a first section 41 of the insulator 40, at least section by section, wherein the first section 41 of the insulator 40 is preferably configured to embed the contact conductor(s) 10, i.e., in particular, the contact conductor(s) 10 which is / are not the grounding conductor 12.

[0107] Further details, as in Fig. 1 to be seen, especially in connection with the Figures 2a to 4 further explained.

[0108] The Figures 2a and 2b Each figure shows an oblique view of a partial section through a circular connector 100, according to an embodiment of the present invention. Figures 2a and 2bThis essentially provides a configuration of the circular connector 100, as already described in Fig. 1 shown again.

[0109] The Figures 3a and 3b Each shows an oblique view of an earthing element 50 of a circular connector 100, according to an embodiment of the present invention, wherein in Fig. 3a In addition to the earthing element 50, the insulator 40 is also shown, and in Fig. 3b In addition to the grounding element 50, the contact shell 30 is also partially shown. Figures 3a and 3b This essentially provides a configuration of the circular connector 100, as already described in the Figure 1 , 2a and 2b shown again.

[0110] Fig. 4 Figure 1 shows an oblique view of an earthing element 50 of a circular connector 100, according to an embodiment of the present invention. Fig. 4This essentially provides a configuration of the grounding element 50 of the circular connector 100, as already described in the Figure 1 , 2a , 2b , 3a and 3b shown again.

[0111] In Fig. 2a In particular, a section of the connector housing 20 is shown, while the insulator 40, the contact shell 30, and the grounding element 50 are shown uncut. In contrast, in Fig. 2b in particular, both a part of the connector housing 20 is shown in cutaway, as well as a part of the insulator 40, the contact shell 30 and the earthing element 50 is shown in cutaway.

[0112] As through the Figures 2a and 2b shown and subsequently also by the Figures 3a, 3b and 4As illustrated, the grounding element 50 has in particular a recess 52, wherein the recess 52 is formed or arranged in particular on a radially outer side of the grounding element 50. In other words, as shown by the Figures 2a, 2b , 3a, 3b and 4 As shown, a recess 52 is formed or arranged in a surface of the earthing element 50. The recess 52 is configured, in particular, to receive a projection 42 of the insulator 40, especially to receive it section by section.

[0113] By at least partially receiving or arranging the projection 42 in the recess 52, the projection 42 and the recess 52 advantageously form a positive fit with respect to the circumferential direction U, thus enabling the insulator 40 to be mounted on the grounding element 50 in a manner that is clearly visible from the outside. In other words, the positive fit with respect to the circumferential direction U describes how the Figures 2a, 2b , 3a and 3bThis clarifies that the insulator 40 is arranged in a rotationally secure manner on the grounding element 50. Furthermore, and as shown in the Figures 2a, 2b , 3a, 3b and 4 To clarify, the projection 42 forms a positive fit with the recess 52 with respect to the insertion direction or longitudinal direction L, in that the recess 52 has a limit or a stop in the longitudinal direction L, so that the projection 42 is configured in particular to abut the recess 52 in a direction substantially opposite to the insertion direction or longitudinal direction L.

[0114] Furthermore, as through the Figures 2a, 2b and 3bTo clarify, the contact shell 30 can, in particular, have a recess 32 which is essentially congruent with the recess 52 of the grounding element 50. In other words, the contact shell 30 has, in particular, a recess 32 which is configured to receive the insulator 40, in particular the projection 42 of the insulator 40, at least partially. The projection 42 preferably forms a positive fit with the recess 32 of the contact shell 30 in the circumferential direction U, and additionally or alternatively, in particular, a positive fit in the insertion direction or longitudinal direction L, such that the recess 32 limits or restricts movement of the insulator 40 in a direction opposite to or parallel with the insertion direction or longitudinal direction L.

[0115] As in Fig. 3bAs shown, the recess 32 of the contact shell 30 can be substantially aligned with the recess 52 of the grounding element 50. This advantageously provides precise positioning of the insulator 40, grounding element 50, and contact shell 30 relative to each other, which advantageously enables precise and tolerance-compliant positioning in the connector housing 20 of the circular connector 100.

[0116] The recess 52 of the grounding element 50 and / or the recess 32 of the contact shell 30 are preferably configured to engage with the projection 42 of the insulator 40, in particular to form a form-fitting engagement in the circumferential direction U, which occurs during assembly of the grounding element 50 to the insulator 40 in the insertion direction or longitudinal direction L, before a first section 41 of the insulator 40 enters the first opening 58 of the grounding element 50 and / or before the grounding conductor 12 embedded in the insulator 40 enters the grounding conductor opening 57 and / or the grounding conductor collar 53. This advantageously simplifies the assembly of the grounding element 50, insulator 40, and contact shell 30 by aligning the insulator 40 with respect to the circumferential direction U to the grounding element 50 and / or contact shell 30 in an easily visible and thus controllable manner at an early stage.

[0117] What next in the Figures 2a, 2b , 3a, 3b and 4To clarify, the grounding element 50 includes, in particular, a projection 54 that extends outwards in the radial direction R relative to the rest of the grounding element 50. In other words, the grounding element 50 has, in particular, a projection 54 on its outer circumferential surface or lateral surface that extends outwards in the radial direction R.

[0118] The lead of 54 is, as shown by the Figures 2a, 2b and 3b The projection 54 of the grounding element 50 is specifically configured to be received by a groove 34 of the contact shell 30. In particular, the projection 54 of the grounding element 50 is configured to extend at least partially along the circumferential direction U. The groove 34 of the contact shell 30 is specifically configured to receive the projection 54 partially or completely along its circumferential extension U.

[0119] As through Fig. 3bAs shown, the contact shell 30 can preferably be designed in two parts to facilitate easy assembly of the contact shell 30 to the grounding element 50, in particular to enable easy assembly surrounding the projection 54. This allows the grounding element 50 to be advantageously connected securely and easily to the contact shell 30, wherein the grounding element 50 and the contact shell 30 are connected, in particular by a positive locking connection with respect to the insertion direction or longitudinal direction L. The positive locking connection with respect to the insertion direction or longitudinal direction describes, in particular, how by Fig. 3b This illustrates a connection in which, in particular, movement in the insertion direction or longitudinal direction of the grounding element 50 relative to the contact shell 30 is prevented. The positive locking mechanism cannot, in particular, be released without damage.

[0120] In the assembled state of the circular connector 100, and as particularly in the Figures 2a and 2bTo clarify, the grounding element 50 and the contact shell 30 are not detachably connected to each other in a non-destructive manner, thereby ensuring a suitably secure and durable electrically conductive contact between the contact shell 30 and the grounding element 50. For example, the groove 34 of the contact shell 30 can provide or configure a press fit with the projection 54 of the grounding element 50 in sections along the circumferential direction U, so that a planar electrically conductive contact between the contact shell 30 and the grounding element 50 is provided or is provided, which in turn ensures a suitably short electrically conductive path between the connector housing 20 and the grounding conductor 12.

[0121] How to proceed through the Figures 2a, 2b , 3a, 3b and 4As illustrated, the grounding element 50 has in particular a first opening 58, which is preferably spaced apart from the grounding conductor opening 57, particularly in the radial direction R. Furthermore, the first opening 58 is, as shown in particular in the Figures 2a, 2b and 3a The insulator 40 is shown configured to accommodate a first section 41, at least section by section, preferably such that the first section 41 extends through the first opening 58 of the grounding element 50, and in particular extends substantially in the insertion direction or longitudinal direction L through the first opening 58. The contact conductors 10 are preferably embedded in the first section 41 of the insulator 40, whereby the embedding first section 41 advantageously provides a safe distance or separation between the contact conductors 10 and the grounding element 50 and the grounding conductor 12.

[0122] The first section 41 of the insulator 40, extending through the first opening 58, advantageously provides a positive-locking connection with respect to the circumferential direction U, thus ensuring secure positioning of the insulator 40 relative to the grounding element 50. The first section 41 can have a cross-sectional shape or contour, i.e., essentially perpendicular to the insertion direction or longitudinal direction L, particularly a substantially semicircular shape or contour, without being strictly limited to this. This advantageously allows, in particular, several contact conductors 10 to be embedded at intervals within the insulator 40, while simultaneously ensuring spacing between the several contact conductors 10 and the grounding conductor 12.

[0123] The first section 41 is preferably designed on the insulator 40 such that, when the earthing element 50 is mounted with the insulator 40, the projection 42 engages at least partially with the recess 54 of the earthing element 50, so that during assembly, a secure guidance of the section 41 through the first opening 58 is ensured.

[0124] The grounding element 50, as in the Figures 1 to 4 As shown, the earthing element 50 can be essentially ring-shaped. The earthing element 50 can, in particular, have a lateral surface extending substantially along the longitudinal direction L, especially a stepped lateral surface, wherein the stepped lateral surface has, in particular, the radially outwardly projecting projection 54. As shown by the Figures 1 to 4To clarify, the earthing element 50 can have a sectionally closed end face on its side facing away from the insertion direction or longitudinal direction L, i.e., on a side facing the strain relief 24 in the assembled state, wherein the sectionally closed end face of the earthing element 50 is formed in particular by a sectionally closed surface, in particular a substantially semicircular surface, and the first opening 58, in particular a substantially semicircular opening 58.

[0125] The grounding element 50 can be made of or consist of a metal, for example copper, aluminum, nickel, zinc, or iron. In alternative embodiments, the grounding element 50 can be made of or consist of another electrically conductive material.

[0126] The contact bowl 30, as especially in the Figure 1 , 2a , 2b and 3bThe contact shell 30 shown can, in particular, comprise or consist of a metal, especially copper, aluminum, nickel, zinc, or iron. In alternative embodiments, the contact shell 30 can comprise or consist of another material, particularly an electrically conductive one. For example, the contact shell 30 can comprise or consist of stainless steel, which advantageously eliminates the need for a coating of the contact shell 30 that might otherwise be required.

[0127] Fig. 5 Figure 1 shows a flowchart of a method for manufacturing a circular connector 100 according to the present invention. The circular connector 100 is manufactured according to the method according to Figure 1. Figure 5 which can be manufactured, can in particular the circular connector 100 according to the Figures 1 to 4 are equivalent to.

[0128] The process for manufacturing the circular connector 100, as described in Fig. 5 The steps shown include in particular: S10 Providing a plurality of contact conductors 10, 12 and an electrically conductive connector housing 20; S20 Arranging the majority of contact conductors 10, 12 in an insulator 40; S30 Pressing a grounding element 50 against the insulator 40; S40 electrical connection of the earthing element 50 to an earthing conductor 12 of the plurality of contact conductors 10, 12; and S50 Arranging the grounding element 50 on a contact shell 30, which is configured to electrically connect the grounding element 50 to the connector housing 20.

[0129] The procedure according to steps S10, S20, S30, S40 and S50 can in particular be configured to execute steps S10, S20, S30, S40 and S50 in exactly this order, i.e. first S10, then S20, then S30, then S40, and then S50.

[0130] In exemplary embodiments, step S50 of the method can in particular be a step of inserting the contact shell 30 with the grounding element 50 into the connector housing 20. The contact shell 30 is preferably configured to come into a predetermined position relative to the connector housing 20, in which the contact shell 30 makes electrically conductive contact with the connector housing 20.

[0131] In preferred embodiments, step S50 of arranging the grounding element 50 on the contact shell 30 can, in particular, comprise a positive-locking arrangement of the grounding element 50 on the contact shell 30. Specifically, step S50 can comprise a step of encircling the contact shell 30 on the grounding element 50, particularly a step of positively encircling the contact shell 30 on the grounding element 50. This allows the contact shell 30 and the grounding element 50 to be securely connected to each other and fixed relative to each other in the connector housing 20.

[0132] Additionally or alternatively, step S40 of electrically connecting the earthing element 50 to the earthing conductor 12 may, in particular, include a step of crimping the earthing conductor 12, specifically a step of crimping the earthing conductor 12 at an earthing conductor opening 57 and / or an earthing conductor collar 53 of the earthing element 50. This ensures a reliably electrically conductive connection between the earthing element 50 and the earthing conductor 12.

[0133] Furthermore, or alternatively, step S30 of pressing the earthing element 50 onto the insulator 40 may in particular include a step of arranging the insulator 40 on the earthing element 50 in a form-fitting manner with respect to the circumferential direction and / or with respect to the insertion direction of the circular connector 100.

[0134] Furthermore, or alternatively, step S20 of arranging the plurality of contact conductors 10, 12 in the insulator 40 may in particular include a step of embedding the contact conductors 10, 12 at least sectionally in the insulator 40. Reference symbol list

[0135] 10 Contact conductor (for conventional power line) 12 Grounding conductor 15 Contact conductor connection 16 Grounding connection 20 Connector housing 22 Grip area 24 Strain relief 30 Contact shell 32 Recess (of contact shell 30) 34 Groove (of contact shell 30) 40 Insulator 41 First section (of insulator 40) 42 Projection (of insulator 40) 50 Grounding element 52 Recess (of grounding element 50) 53 Grounding conductor collar 54 Projection (of grounding element 50) 57 Grounding conductor opening 58 First opening (of grounding element 50) 100 Circular connector L Longitudinal direction R Radial direction S10-S50 Steps of a method for manufacturing a circular connector U Circular direction

Claims

1. A circular connector (100) comprising: - an electrically conductive connector housing (20); - a plurality of contact conductors (10; 12), wherein the plurality of contact conductors (10; 12) comprises a potential equilibration conductor (12); - an insulator (40), wherein the plurality of contact conductors (10; 12) is embedded at least in sections in the insulator (40); and - a potential equilibration member (50); -- wherein the potential equilibration member (50) accommodates the insulator (40) in sections, -- wherein the potential equilibration member (50) electrically conductively contacts the potential equilibration conductor (12), and -- wherein the potential equilibration member (50) is electrically conductively connected to the connector housing (20) by means of a contact shell (30), wherein the potential equilibration member (50) has a first opening (58) configured to receive a first portion (41) of the insulator (40), and wherein the circular connector (100) is characterized in that the potential equilibration member (50) comprises a recess (52), wherein the recess (52) is configured to engage a protrusion (42) of the insulator (40) in the insertion direction of the circular connector, such that the protrusion (42) is configured to engage the potential equilibration member (50) prior to the first portion (41) of the insulator (40) when the insulator (40) and the potential equilibration member (50) are assembled.

2. The circular connector (100) according to claim 1, wherein the potential equilibration member (50) has a substantially annular cross-section which is configured to contact the contact shell (30) at least in sections along a circumferential direction (U) of the potential equilibration member (50).

3. The circular connector (100) according to any one of claims 1 or 2, wherein the potential equilibration member (50) comprises a potential equilibration conductor opening (57), in which the potential equilibration conductor (12) is received at least in sections, wherein the potential equilibration member (50) preferably comprises a potential equilibration conductor collar (53), wherein the potential equilibration conductor collar (53) is arranged around the potential equilibration conductor opening (57), and wherein the potential equilibration conductor (12) is received at least in sections in the potential equilibration conductor collar (53) , and wherein preferably the potential equilibration member (50) is crimped to the potential equilibration conductor (12) and / or is crimped to the insulator (40).

4. The circular connector (100) according to any one of the preceding claims, wherein the potential equilibration member (50) is arranged form-fittingly on the insulator (40) in the insertion direction of the circular connector, and / or wherein the potential equilibration member (50) is arranged form-fittingly on the insulator (40) in the circumferential direction of the circular connector.

5. The circular connector (100) according to any one of the preceding claims, wherein the first portion (41) of the insulator (40) extends in sections through the first opening (58) of the potential equilibration member (50), and wherein the contact conductors (10) of the plurality of contact conductors (10; 12) without the potential equilibration conductor (12) are at least partially embedded in the first portion (41) of the insulator (40).

6. The circular connector (100) according to one of the preceding claims, wherein the potential equilibration member (50) is arranged form-fittingly on the contact shell (30).

7. The circular connector (100) according to any one of the preceding claims, wherein the contact shell (30) comprises two or more subshells which form the contact shell (30) in an assembled state.

8. The circular connector (100) according to any one of the preceding claims, wherein the circular connector (100) is a cold device plug, preferably a 230 V cold device plug, and wherein the circular connector (100) preferably comprises three contact conductors (10; 12).

9. Use of a circular connector (100) according to any one of claims 1 to 8 for electrical connection to a terminal complementary to the circular connector (100).

10. Method for manufacturing a circular connector (100), the method comprising the steps of: - providing a plurality of contact conductors (10; 12) and an electrically conductive connector housing (20); - arranging the plurality of contact conductors (10; 12) in an insulator (40); - pressing a potential equilibration member (50) onto the insulator (40); - electrically connecting the potential equilibration member (50) to a potential equilibration conductor (12) of the plurality of contact conductors (10; 12); and - arranging the potential equilibration member (50) on a contact shell (30) which is configured to electrically conductively connect the potential equilibration member (50) to the connector housing (20), wherein the potential equilibration member (50) has a first opening (58) configured to receive a first portion (41) of the insulator (40), and is characterized in that the potential equilibration member (50) comprises a recess (52), wherein the recess (52) is configured to engage a protrusion (42) of the insulator (40) in the insertion direction of the circular connector, such that the protrusion (42) is configured to engage the potential equilibration member (50) prior to the first portion (41) of the insulator (40) when the insulator (40) and the potential equilibration member (50) are assembled.

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