SCREW SYSTEM, SCREW CONNECTOR AND METHOD FOR MANUFACTURING A SCREW CONNECTOR

Description

[0001] The invention relates to a screw or plug-in system, a female and male screw or circular connector and a method for producing a screw or circular connector.

[0002] The invention lies in the field of connector technology, in particular in the field of circular connectors, i.e. connectors with, for example, an M12, M8, M23 or a 7 / 8" thread. Such circular connectors, in particular M12 circular connectors, are used, for example, for electrical contacting and / or connecting industrial Ethernet. Furthermore, such circular connectors are often exposed to mechanical stresses, such as vibrations from connected machines, which is why these circular connectors should be designed for mechanical loads and, in particular, have a screw ring with a thread with which the connector can be screwed and secured.

[0003] Circular connectors are typically located at one end of a cable and are used to contact a complementary circular connector and / or a complementary circular connector socket. An important property of circular connectors is their shielding ability against electromagnetic radiation, thus ensuring high quality of the signals transmitted through the connector. For this purpose, the circular connector has a corresponding shielding housing. The shielding effect can be enhanced by electrically connecting the shielding housing to the connector's screw ring. An electrical connection between the shielding housing and the connector's screw ring is also important so that when the connector is screwed together with a complementary connector, the respective shielding housings are electrically connected to each other via the screw rings.

[0004] Traditionally, this is solved by the screw ring of a circular connector directly contacting the shield housing of the circular connector when fully screwed together or assembled.

[0005] Within the scope of the present invention, however, it has been found that in practice, the connectors to be connected are not always fully screwed together, or the screw connection may become slightly loose or loose due to vibrations or mechanical stress. This can result in a reduction in the shielding effect of the plugged or screwed-together connectors, as the electrical contact between the screw ring and the shielding housing deteriorates or even disappears altogether.

[0006] The publication DE 10 2015 014492 A1 discloses a modular connector system with a female connector and a male connector. The female connector has a female screw ring with a plug-in end into which a male screw ring of the male connector can be screwed. Furthermore, the female and male screw connectors each have a shielded housing.

[0007] US 2014 / 235099 A1 discloses a coaxial cable connector for coupling one end of a coaxial cable to a device port. The coaxial cable has an inner conductor, a dielectric surrounding the inner conductor, an outer conductor surrounding the dielectric, and a jacket surrounding the outer conductor. A grounding element ensures that an electrical ground path is established even when the connector is not firmly attached to a device port.

[0008] It is an object of the present invention to provide a female and male screw connector or a system of screw connectors that exhibits an improved and reliable shielding effect. Furthermore, a method for producing an improved screw connector is to be specified.

[0009] This object is achieved by the subject matter of the independent claims. Preferred embodiments of the invention are the subject matter of the dependent claims.

[0010] A first independent aspect for solving the problem concerns a screw system with a female screw connector and a male screw connector, which can be screwed together, wherein the female screw connector comprises: a female screw ring with a plug-in end into which a male screw ring of the male screw connector can be screwed, and a female shielding housing for at least partially shielding the female screw connector; wherein the male screw connector comprises: the male screw ring with a plug-in end that can be screwed into the plug-in end of the female screw ring, and a male shielding housing for at least partially shielding the male screw connector;wherein the female screw connector has a female shield contact ring which, in an assembled state, electrically connects the female screw ring and the female shield housing, and / or the male screw connector has a male shield contact ring which, in the assembled state, electrically connects the male screw ring and the male shield housing. ;

[0011] The female screw connector or plug connector and the male screw connector or plug connector are designed and intended to be plugged and / or screwed into each other with their plug-in end in the plug-in direction, thereby forming a plug-in or screw connection. The male screw connector is designed essentially complementarily to the female screw connector and vice versa.

[0012] The screw system can be designed, in particular, as a system with M12 screw or plug connectors. Both the female and male screw connectors each have a screw ring and a shielding housing, in particular a cylindrical one.

[0013] The screw system may comprise further elements, such as one or two insulating bodies, one or two sealing rings for sealing the connectors and / or one or two retaining rings that prevent and / or reduce accidental loosening of the connector, ie to secure the connector.

[0014] In particular, the female screw connector and the male screw connector can each be inserted into one another with a plug-in end along a plug-in direction. In addition to the female screw ring and the female shielding housing, the female screw connector preferably has a female insulating body that can be arranged inside the female screw ring and that can be inserted into a male insulating body of the male screw connector along the plug-in direction. Accordingly, in addition to the male screw ring and the male shielding housing, the male screw connector preferably has the male insulating body that can be arranged inside the male screw ring and into which the female insulating body can be inserted along the plug-in direction.

[0015] The female screw connector has a plug-in end and an end remote from the plug-in end (e.g., cable end), at which a cable can be arranged. The plug-in end of the female connector can be designed and provided to be plugged into the plug-in end of the male connector. The male connector has a remote end (e.g., cable end) remote from the plug-in end of the male connector, at which a cable can be arranged on the male screw connector.

[0016] The female and male screw rings are designed to be complementary to one another and are intended to be screwed into and / or together in order to secure a plug-in connection. The female and male screw rings are made at least partially or completely from a conductive material, in particular from metal. A female or male insulating body, i.e. an electrically non-conductive element, can be arranged inside each of the two screw rings. Both insulating bodies can essentially have the shape of a cylinder, around which the respective screw ring is arranged. The respective screw ring can be arranged so as to be rotatable about the cylinder axis of the respective insulating body, which can coincide with the insertion direction and is arranged so as to pierce the interior of the respective screw ring.Each screw ring and each insulating body can also each have a plug-in end, which is designed and intended to physically contact the plug-in end of the respective complementary component.

[0017] The female insulator can have female electrical contacts (e.g., contact sockets and / or female contact pins) into which the male electrical contacts of the male insulator are inserted when the two screw or plug connectors are mated. As is common with M12 connectors, the female insulator can have a plurality of female electrical contacts, e.g., five.

[0018] The male insulating body can also have a plurality of male electrical contacts (e.g., contact pins), for example, the same number as the female insulating body—five in the example. Both the male and female electrical contacts can be electrically and / or physically connected to wires or strands of a cable, which can each be arranged at the end piece of the insulating body. The end piece is arranged opposite the plug-in end. When the two screw connectors or plug-in connectors form a plug-in connection, the male contacts make contact with the female contacts, and vice versa, both electrically and physically.

[0019] The female and male insulating bodies are complementary and designed to be plugged into one another. The insulating bodies are made of an electrically insulating material, such as plastic. The insulating bodies provide electrical insulation between the individual electrical contacts, between the screw ring(s) and the electrical contacts, and, if applicable, also between the shield housing(s) and the electrical contacts.

[0020] By screwing the two screw rings together, the plug connection is protected against mechanical stress, e.g. against vibrations from a machine and / or unintentional stress on the cable, such as tripping over the cable.

[0021] Each of the two insulating bodies can have a plug-in end that is designed to form a plug-in connection with the plug-in end of the associated second insulating body. The end piece with a constant outer diameter is arranged at the opposite end of each respective insulating body. This end piece can be arranged adjacent to the cable with which the electrical contacts of the insulating body are contacted. Both end pieces, i.e. both the end piece of the male insulating body and the end piece of the female insulating body, can have the same constant outer diameter. This makes it possible to fit an identically constructed shielding housing onto both end pieces. In other words, a shielding housing can be plugged onto the end piece of the female insulating body, which is identical in construction to a second shielding housing that can be plugged onto the end piece of the male insulating body.

[0022] The female and male shielding housings are electrically conductive, particularly made of metal, to provide the required electrical shielding effect. Furthermore, the shielding housing is essentially designed in the shape of an elongated cylinder, which has only a cylindrical shell but neither a cylindrical base nor a cylindrical cover. The female and male shielding housings are therefore essentially tubular.

[0023] In the context of the invention, "essentially" fulfilling a property means that this property is fulfilled to at least 90%, preferably to at least 95%, particularly preferably to at least 99%. In particular, this property can be fulfilled to 100%.

[0024] Thus, the fact that the shielding housing essentially has the shape of a cylinder without a bottom or lid means that the shape of the shielding housing corresponds to that of such a cylinder at least 90%, preferably 95%, etc. However, this cylinder can, for example, contain small holes and / or grooves that deviate from the 100% strict shape of a cylinder.

[0025] The same or similar applies to the inner diameter of the shielding housing, which is preferably essentially constant, i.e. does not deviate from its constant value by more than 10%, preferably 5%, or particularly preferably by a maximum of 1%. The inner diameter is furthermore essentially constant over the entire cylinder height, i.e. over at least 90%, 95%, 99% or 100% of the entire cylinder length. At one end, the shielding housing can, for example, be slightly flared to make it easier to attach the shielding housing to the end piece. For this reason, the inner diameter and outer diameter of the shielding housing and the end piece do not have to correspond 100%, nor over exactly 100% of the length of the shielding housing.

[0026] The inner diameters of the shielding housings can be matched to the predetermined outer diameter of the two end pieces. These diameters, and in particular the components of the insulating bodies and shielding housings, are preferably matched to one another in such a way that a shielding housing can be plugged onto one of the end pieces of an insulating body.

[0027] The shape of the insulating bodies can be as simple as possible. The shape of the insulating bodies can essentially correspond to that of a cylinder with a constant cylinder diameter. Furthermore, the two shielding housings can be constructed identically, which allows for simplified manufacturing of the shielding housings.

[0028] The end piece of the female insulating body and the end piece of the male insulating body can be designed and provided to be inserted into an associated shielding housing, the inner diameter of which is less than 5% larger than the predetermined outer diameter of the two end pieces. The outer diameter of the end pieces can be matched to the inner diameter of the shielding housing. This means that the two diameters are essentially equivalent, i.e., they are essentially the same size. The inner diameter of the shielding housing can be slightly larger than the outer diameter of the end pieces to enable the components to be easily inserted into one another.

[0029] The female screw connector has a female shield contact ring, which, when assembled, electrically connects the female screw ring and the female shield housing. Alternatively or additionally, the male screw connector has a male shield contact ring, which, when assembled, electrically connects the male screw ring and the male shield housing.

[0030] For the purposes of this description, an assembled state is understood to mean a state in which the female or male screw connector is used as intended and / or is mounted, assembled, or screwed together as intended. In particular, an assembled state is understood to mean that the female or male screw connector is screwed together with a complementary screw connector. An assembled state can therefore also be referred to as an assembled state, assembled state, screwed-together state, and / or as an operating state. In other words, the assembled state of a screw connector or screw system refers to a proper arrangement or installation position of the individual elements of the screw connector or screw system.

[0031] In other words, the female shield contact ring is designed and / or intended to electrically connect the female screw ring and the female shield housing, particularly in an assembled state. Accordingly, the male shield contact ring is designed and / or intended to electrically connect the male screw ring and the male shield housing, particularly in an assembled state. The female and male shield contact rings are formed at least partially or completely from a conductive material, particularly from metal.

[0032] The shield contact ring is essentially a separate element of the screw connector, along with the screw ring. However, the shield contact ring can be inserted into the interior of the screw ring and connected and / or fixed to the screw ring in a rotationally fixed manner. In particular, when assembled, the shield contact ring is inserted into the interior of the screw ring and connected and / or fixed to the screw ring in a rotationally fixed manner.

[0033] In comparison to conventional circular connectors, in which the screw ring can only directly contact the shielding housing of the circular connector when fully screwed together or assembled, according to the invention the physical and electrical contact between the screw ring and the shielding housing is made alternatively or in addition to the direct contact via a shielding contact ring specially provided for the electrical contact.

[0034] This advantageously ensures that even if the screw ring is not fully tightened or if the screw ring becomes slightly loose or loose, electrical contact is maintained between the screw ring and the shielding housing. This allows for improved and reliable shielding.

[0035] In a preferred embodiment, the female shield contact ring is arranged in a guide groove of the female screw ring when assembled. Alternatively or additionally, the male shield contact ring is arranged in a guide groove of the male screw ring when assembled. The guide groove is arranged inside or on an inner surface of the female and male screw rings. In other words, the female screw ring is designed to receive the female shield contact ring and the male screw ring is designed to receive the male shield contact ring. When assembled, the female or male shield contact ring is connected to the female or male screw ring in a rotationally fixed manner.

[0036] In a further preferred embodiment, the female shield contact ring has at least a first female spring element which, in the assembled state, contacts the female shield housing, in particular an edge region or a shoulder of the female shield housing. Alternatively or additionally, the male shield contact ring has at least a first male spring element which, in the assembled state, contacts the male shield housing, in particular an edge region or a shoulder of the male shield housing. Preferably, the female and the male shield contact ring are each designed as an open ring, in particular as a snap ring. Further preferably, the first spring element is in each case formed on an end section of the open ring. The at least first female or male spring element is preferably designed and / or provided to contact the female ormale shielding housing, in particular an edge region or a shoulder of the female or male shielding housing. In this case, the at least first spring element is resiliently deformed in the assembled state, i.e. compressed or compressed, so that due to its resilient and in particular elastic properties it exerts a certain restoring force on the shielding housing or a shoulder thereof. This advantageously brings about improved electrical contact between the shielding housing and the screw ring. Since the shielding contact ring is connected to the screw ring in a rotationally fixed manner in the assembled state, the shielding contact ring and thus the at least one spring element moves relative to the shielding housing when the screw ring is screwed in and out and thus forms a sliding contact.

[0037] In a further preferred embodiment, the female shield contact ring has a second female spring element, which contacts the female shield housing in the assembled state. Alternatively or additionally, the male shield contact ring has a second male spring element, which contacts the male shield housing in the assembled state.

[0038] The second female and male spring elements have in particular the same features as the first female and male spring elements described above, with the exception that the second female and male spring elements are not arranged at an end portion of the shield contact ring, but preferably at a middle portion of the shield contact ring.

[0039] The female screw ring has a fastening engagement, and the female shield contact ring has an associated fastening element, which, when assembled, is arranged in the fastening engagement of the female screw ring. The male screw ring has a fastening engagement, and the male shield contact ring has an associated fastening element, which, when assembled, is arranged in the fastening engagement of the male screw ring. The fastening engagement is formed on an inner surface of a screw ring. With the aid of the fastening engagement and the fastening element, the shield contact ring can be connected or fixed to the respective screw ring in a rotationally fixed manner.

[0040] The female shield contact ring has a second female spring element, which in the assembled state contacts the female shield housing and is a component of the fastening element of the female shield contact ring. The male shield contact ring has a second male spring element, which in the assembled state contacts the male shield housing and is a component of the fastening element of the male shield contact ring. In particular, the fastening element of a shield contact ring preferably has two fastening lugs and the second spring element. The fastening lugs are designed and provided to be engaged with the fastening engagement of the screw ring and thus

[0041] The shield contact ring is to be fixed to the screw ring in a rotationally fixed manner. Preferably, the second spring element, in particular as a projection or tongue, extends substantially radially into the interior of a shield contact ring, i.e., substantially perpendicular to the insertion direction, in order to contact the shield housing in the assembled state. In particular, the second spring element is designed and provided to press against the shield housing or an edge region or a shoulder of the shield housing with a specific restoring force in the assembled state. Like the first spring element, the second spring element also acts as a sliding contact.

[0042] With the help of the second spring element, the electrical contact between the shielding housing and the screw ring can be further improved when assembled. The same applies to the shielding effect of the female or male screw connector or the screw system.

[0043] In a further preferred embodiment, the female shield housing has a grid on an outer surface of the female shield housing. Furthermore, the female shield contact ring has a female locking element which can be brought into engagement with the grid of the female shield housing or which, in the assembled state, is in engagement with the grid of the female shield housing. Alternatively or additionally, the male shield housing has a grid on an outer surface of the male shield housing. Furthermore, the male shield contact ring has a male locking element which can be brought into engagement with the grid of the male shield housing or which, in the assembled state, is in engagement with the grid of the male shield housing. The female and male locking elements are preferably designed as spring elements. In this way, the female or male shield contact ring advantageously also serves as a locking ring.

[0044] In a further preferred embodiment, the female screw connector further comprises a female insulating body which can be arranged inside the female screw ring and which can be inserted into a male insulating body of the male screw connector along an insertion direction.

[0045] Accordingly, the male screw connector further comprises the male insulating body, which can be arranged inside the male screw ring and into which the female insulating body can be inserted along the insertion direction. The female insulating body has a grid on its outer surface, and the female shield contact ring has a female locking element, which can be brought into engagement with the grid of the female insulating body or which, in the assembled state, is in engagement with the grid of the female insulating body. Alternatively or additionally, the male insulating body has a grid on its outer surface, and the male shield contact ring has a male locking element, which can be brought into engagement with the grid of the male insulating body or, in the assembled state, is in engagement with the grid of the male insulating body. In this way, the female orThe male shield contact ring advantageously also serves as a locking ring. The shield contact ring or locking ring can engage the corresponding notch of the insulating body by means of the locking element. The outer surface of the insulating body faces the inner surface of the corresponding screw ring.

[0046] The shield contact ring, which also acts as a locking ring by engaging the locking element in the grid of the shield housing or insulating body, advantageously protects the screwed connector against accidental unscrewing and thus against accidental loosening of the connector. Since circular connectors, in particular, are often used for the electrical connection of heavy machinery, these connectors are often exposed to vibrations that can loosen the screw connection over time. Using a shield contact ring that acts as a locking ring, both the shielding effect and the stability of a female and male screw connector or a screw system can be improved in a simple and cost-effective way.

[0047] In a further preferred embodiment, the female shield contact ring is designed as an open ring or as a snap ring with a first and second end portion. The first female spring element is formed on the first end portion of the female shield contact ring, and the female locking element is formed on the second end portion of the female shield contact ring. Alternatively or additionally, the male shield contact ring is designed as an open ring or snap ring with a first and second end portion. The first male spring element is formed on the first end portion of the male shield contact ring, and the male locking element is formed on the second end portion of the male shield contact ring.

[0048] In a further preferred embodiment, the first female spring element and the female arresting element are each designed as a taper of the female shield contact ring. In addition, the first female spring element is offset by a distance d relative to the female arresting element along an axial direction of the female shield contact ring. The distance d is preferably approximately 1 mm. In the assembled state, the first female spring element is thus offset relative to the female arresting element in the direction of the female shield housing, i.e. in the insertion direction E. Alternatively or additionally, the male arresting element is designed as a taper of the male shield contact ring in order to engage only with the grid of the male insulating body, particularly in the assembled state, while the first male spring element touches or contacts the male shield housing.

[0049] In this way, with just one additional element, namely the shield contact ring, it is possible to improve both the shielding and the stability of the female and male screw connectors or the screw system.

[0050] Another independent aspect for solving the problem concerns a female screw connector for a screw system, comprising: a female screw ring with a plug-in end into which a male screw ring of a male screw connector of the screw system can be screwed, and a female shield housing for at least partially shielding the female screw connector, wherein: the female screw connector has a female shield contact ring which, in an assembled state, electrically connects the female screw ring and the female shield housing to one another; the female screw ring has a fastening engagement, and the female shield contact ring has a fastening element which, in the assembled state, is arranged in the fastening engagement of the female screw ring; and the female shield contact ring has a female spring element which, in the assembled state, contacts the female shield housing and is a component of the fastening element of the female shield contact ring.

[0051] Preferably, the female screw connector further comprises a female insulating body which can be arranged inside the female screw ring and which can be inserted along an insertion direction into a male insulating body of the male screw connector of the screw system, Further preferably, the female shielding housing can be arranged on an end piece of the female insulating body.

[0052] Another independent aspect for solving the problem concerns a male screw connector for a screw system, comprising: a male screw ring with a plug-in end that can be screwed into a female screw ring of a female screw connector of the screw system, and a male shielding housing for at least partially shielding the male screw connector, wherein: the male screw connector has a male shield contact ring which, in an assembled state, electrically connects the male screw ring and the male shield housing; the male screw ring has a fastening engagement, and the male shield contact ring has a fastening element which, in the assembled state, is arranged in the fastening engagement of the male screw ring; and the male shield contact ring has a male spring element which, in the assembled state, contacts the male shield housing and is part of the fastening element of the male shield contact ring.

[0053] Preferably, the male screw connector further comprises a male insulating body that can be arranged inside the male screw ring and into which a female insulating body of the female screw connector of the screw system can be inserted along an insertion direction E. Furthermore, the male shielding housing can preferably be arranged on an end piece of the male insulating body.

[0054] A further independent aspect for solving the problem relates to a method for producing a screw connector for a screw system, comprising the steps: Providing a screw ring with a plug-in end that can be screwed into a complementary screw ring of a complementary screw connector of the screw system, and providing a shielding housing for at least partially shielding the screw connector; wherein a shield contact ring is further provided, which can be arranged or is arranged in a guide groove of the screw ring and is designed to electrically connect the screw ring and the shield housing to one another in an assembled state; wherein the screw ring has a fastening engagement, and the shield contact ring has a fastening element that can be arranged in the fastening engagement (165; 265) of the screw ring (160; 260); and wherein the shield contact ring (130; 230) has a spring element (134c), which is a component of the fastening element (134; 234) of the shield contact ring (130; 230) and can be contacted with the shield housing (170; 270).

[0055] Preferably, the method further comprises the step Providing an insulating body that can be arranged inside the screw ring and that can be plugged together with a complementary insulating body of the complementary screw connector of the screw system. Furthermore, the provided shielding housing can preferably be arranged on an end piece of the insulating body.

[0056] The above-mentioned further independent aspects and in particular the related preferred embodiments are also subject to the above-mentioned or below statements regarding the embodiments of the first aspect. In particular, the above-mentioned and below statements regarding the embodiments of the respective other independent aspects also apply to an independent aspect of the present invention and the related preferred embodiments. Short description of the drawings

[0057] Figure 1 shows a perspective top view of a conventional female and male screw connector; Figure 2 shows a cross-sectional view through the Figure 1 shown screw connectors; Figure 3 shows a perspective view of a female insulating body of a female screw connector; Figure 4 shows a perspective view of a male insulating body of a male screw connector; Figure 5 shows a perspective view of a shielding housing of a screw connector; Figure 6 shows a perspective view of a conventional locking ring for inhibiting an unscrewing movement of a screw connection between two screw connectors; Figure 7A shows a first perspective view of a female screw ring for a female screw connector; Figure 7B shows a second perspective view of the Figure 7Ashown female screw ring; Figure 8A shows a first perspective view of a male screw ring for a male screw connector; Figure 8B shows a second perspective view of the Figure 8A shown male screw ring; Figure 9A shows a first perspective view of a female shield contact ring according to a preferred embodiment of the present invention; Figure 9B shows a second perspective view of the female shield contact ring of Figure 9A ; Figure 9C shows in a third perspective view the female shield contact ring of Figure 9A ; Figure 9D shows in a fourth perspective view the female shield contact ring of Figure 9A ; Figure 10 shows in a perspective view an arrangement of the female shield contact ring of the Figures 9A to 9Dinside a female screw ring; Figure 11A shows in a first perspective view an arrangement of the female shield contact ring of the Figures 9A to 9D on an insulating body and a shielding housing; Figure 11B shows in a second perspective view an arrangement of the female shielding contact ring of the Figures 9A to 9D on an insulating body and a shielding housing; Figure 11C shows, in a third perspective view, an arrangement of the female shielding contact ring of the Figures 9A to 9D on an insulating body and a shielding housing; Figure 12a shows a perspective view of a male shielding contact ring according to a preferred embodiment of the present invention; Figure 12b shows a perspective view of an arrangement of the male shielding contact ring of the Figure 12aon an insulating body and a shielding housing; and Figure 13 shows a screw system with a female and male screw connector according to a preferred embodiment of the present invention. Detailed description of the drawings

[0058] The positional information chosen in this description, such as top, bottom, side, etc., refers to the directly described and illustrated figure and, if the position changes, should be transferred to the new position. The additional designation "female," as used in this description for various elements, is intended to indicate that these elements belong to a female screw connector. Similarly, the additional designation "male" for various elements indicates that these elements belong to a male screw connector.

[0059] Figure 1shows a top view of a female screw connector 100 and a male screw connector 200. The female screw connector 100 has female socket contacts and is designed and intended to be plugged into the male screw connector 200 opposite a plug-in direction E such that the female socket contacts of the female screw connector 100 electrically contact male socket contacts of the male screw connector 200. In this case, a plug-in end 200E of the male screw connector 200 is plugged into a plug-in end 100E of the female screw connector 100 and screwed there. Together, the two screw connectors 100 and 200 form a plug-in or screw connection of a screw system.

[0060] Each of the screw connectors 100 and 200 is essentially elongated and extends parallel to the insertion direction E. Each of the screw connectors 100 and 200 has a respective insertion end 100E and 200E, which, when inserted into one another, faces the respective associated screw connector. Each of the screw connectors 100 and 200 also has a cable end 100K and 200K opposite its respective insertion end 100E and 200E, which is designed and intended to be connected to a cable. For example, the female screw connector 100 has the insertion end 100E and the cable end 100K. The insertion end 100E and the cable end 100K are arranged at opposite ends of the female screw connector 100 in the insertion direction E. The same applies to the male screw connector 200.

[0061] Figure 2 shows a cross section through the middle of the Figure 1shown screw connectors 100 and 200. Contacting of the respective screw connectors can be achieved by a plugging movement in the insertion direction E indicated by an arrow. The insertion direction E is defined as the direction in which the female screw connector 100 must be moved to establish a plug connection with the male screw connector 200. The insertion direction E is arranged parallel to a center axis (not shown) of the screw connectors. The insertion direction E is arranged essentially parallel to the direction of current flow when current flows from a screw connector to a complementary screw connector connected to the screw connector.

[0062] The female screw connector 100 is designed as a female screw connector, meaning that this screw connector has female socket contacts 110. The male screw connector 200 is designed as a male screw connector, meaning that the screw connector has male socket contacts 210. The male socket contacts 210 of the male screw connector 200 are designed and provided to be inserted and plugged into the female socket contacts 110 of the female screw connector 100 such that each male socket contact 210 is in electrical contact with an associated female socket contact 110. The contact can be provided by mechanical and / or electrical contacting.

[0063] The female screw connector 100 has a female shielding housing 170 (see also Figure 5 ) and a female screw ring 160 (see also the Figures 7A and 7B). In addition, the female screw connector 100, as shown in Figure 2 shown, a female insulating body 120 (see also Figure 3 ), the female socket contacts 110, an outer sleeve 180, and a cable (not shown in the figures) to which the female socket contacts 110 can be electrically connected. The individual components of the screw connectors can be molded around the cable up to the outer sleeve 180.

[0064] The male screw connector 200 has a male shielding housing 270 (see also Figure 5 ) and a male screw ring 260 (see also the Figures 8A and 8B ). In addition, the male screw connector 100, as shown in Figure 2 shown, a male insulating body 220 (see also Figure 4), the male socket contacts 210, an outer sleeve 280, and a cable (not shown in the figures) to which the male socket contacts 210 can be electrically connected. The individual components of the screw connectors can be molded around the cable up to the outer sleeve 280.

[0065] As also from the Figure 2 As can be seen, the female screw connector 100 has an optional sealing ring 140, which can be designed as an O-ring and arranged in a receptacle of the female screw ring 160. The sealing ring 140 serves to seal the plug connection. Furthermore, the female screw connector 100 also has an optional locking ring 150, which, when enlarged, Fig. 6 and will be described in more detail below. The male screw connector 200 can also have a corresponding sealing ring (in the embodiment of Figure 2 not included) and / or have a locking ring 250.

[0066] The female screw connector 100 may have a plurality of female socket contacts 110, each of which may be electrically connected to a wire or strand of a cable (not shown). Similarly, the male screw connector 200 may have a plurality of male socket contacts 210, each of which may be electrically connected to wires or strands of a cable.

[0067] The Figures 1 and 2The screw connectors shown are designed as five-pin M12 screw connectors. Such M12 screw connectors are used, among other things, to connect industrial Ethernet networks. M12 screw connectors are exposed to various mechanical loads, such as vibration loads from connected industrial machines. Therefore, M12 screw connectors are preferably used to withstand tensile and compressive loads. Among other features, the screw connectors feature screw rings 160 and 260 to provide a secure screw connection between the male screw connector and the female screw connector. The plug connections are further mechanically stabilized and / or supported by the deep penetration of the male socket contacts 210 into the female socket contacts 110.

[0068] The individual components of a conventional screw connector are shown in the following Figures 3 to 8B described in more detail.

[0069] Figure 3shows the female insulating body 120 of a female screw connector 100. The female insulating body 120 is essentially designed as a solid cylinder which ends in an end face 127 at its insertion end 120E opposite to the insertion direction E. Alternatively, the female insulating body 120 can also have another essentially solid, elongated shape, e.g., with a square or hexagonal cross-section. The end face 127 is arranged and formed essentially perpendicular to the insertion direction E. At the longitudinal end of the female insulating body 120, which faces away from the end face 127, the female insulating body 120 has a cable end 120K, to which the female socket contacts can be connected to a cable. In an insertion position, the end face 127 faces the male screw connector (not shown).

[0070] The female insulating body 120 has a plug-in area 121, which can extend from the end face 127 approximately to the center of the insulating body 120 opposite to the insertion direction E. The plug-in area 121 is designed and provided to be inserted in a plug-in connection into an opening 227 and into a plug-in area 221 of the male insulating body 220 of a male screw connector (see also Figure 4 ). The plug-in area 121 is essentially in the form of a solid cylinder, the cylinder axis of which is arranged parallel to the insertion direction E. The plug-in area 121 has a groove 126 at one point on its outer surface, which groove is formed in the cylinder jacket of the plug-in area 121 and is formed parallel to the insertion direction E. The groove 126 is designed and provided to be brought together in a plug-in connection with a projection 226 of the male insulating body 220 (cf. Fig. 4). The groove 126 and the projection 226 serve to clearly define the alignment of the male and female screw connectors to each other in order to ensure secure contact between the respective male and female socket contacts.

[0071] A plurality of insertion holes 123 are formed in the end face 127. Behind each of the insertion holes 123, a hollow space in the form of a rod cylinder is formed inside the insulating body 120, within each of which a female socket contact 110 is arranged (see also Figure 2 ).

[0072] On the side of the insulating body 120 facing away from the end face 127, a connection area 122 is formed, within which the socket contacts 110 can be electrically and mechanically contacted with wires of a cable. In the transition area between the plug-in area 121 and the connection area 122, a grid 124 is formed on the outside of the female insulating body 120. The grid 124 has a plurality of teeth and recesses, which can be formed, for example, in a triangular shape. The grid 124 serves to inhibit a screw lock of the plug connection, which is described in more detail in the following figures.

[0073] The notch 124, and in particular the teeth of the notch 124, protrude radially from the outer surface of the female insulating body 120 and serve as a stop for the sealing ring 140, which is placed around a portion of the plug-in area 121 of the female insulating body 120. The sealing ring 140, on the one hand, cushions the plug connection between two screw connectors; on the other hand, the sealing ring 140 can ensure a certain degree of moisture resistance of the plug connection, e.g., according to protection class IP67.

[0074] The connection region 122 is essentially formed as a solid cylinder with a constant outer diameter. Thus, the connection region 122 forms an end piece of the female insulating body 120 with a substantially constant outer diameter, onto which the shielding housing 170 (see Fig. 5 ) can be put on.

[0075] The female insulating body 120 further includes a nub 125 on its outer surface, which can be inserted into a recess 172 of the shielding housing 170 and is configured to align the shielding housing 170 relative to the female insulating body 120. In the embodiment shown, the nub 125 is configured adjacent to the grid 124 on the connection area 122, i.e., on the end piece of the female insulating body 120 with a constant outer diameter.

[0076] Figure 4shows a perspective view of the male insulating body 220 of the male screw connector 200. The male insulating body 220 has a substantially cylindrical outer surface, wherein the cylinder axis is arranged parallel to the insertion direction E. Alternatively, the male insulating body 220 can also have another substantially elongated shape that is complementary to the female insulating body, e.g., with a square or hexagonal cross-section.

[0077] The male insulating body 220 has at its end associated with the female screw connector 100 (not shown) the opening 227 which is used to receive the Figure 3shown female insulating body 120 of a female screw connector 100. The male insulating body 220 is essentially formed as an elongated cylinder which ends in the insertion direction E at its insertion end 220E with the opening 227. The insertion end 220E is arranged and formed substantially perpendicular to the insertion direction E. At the longitudinal end of the male insulating body 220, which faces away from the insertion end 220E, the male insulating body 220 has a cable end 220K, to which the male socket contacts can be connected to a cable. The opening 227 faces the (not shown) female screw connector 100 in an inserted position.

[0078] In the opening 227, a plurality of male socket contacts 210 arranged parallel to the insertion direction E are arranged such that their insertion end faces the female screw connector 100 (not shown).

[0079] The male insulating body 220 has, within the opening 227, on one side a projection 226 which can be designed as a guide groove for guiding and correctly orienting the groove 126 of the female insulating body 120, which can be designed as a corresponding complementary counterpart. A part of the male insulating body 220 facing the opening 227 is designed as a plug-in area 221, which is essentially cylindrical in shape. The male socket contacts 210 are arranged inside the plug-in area 221. A part of the insulating body 210 spaced apart from the opening 227 is designed as a connection area 222 and can be mechanically and electrically connected to wires of a cable (not shown). Inside the male insulating body 220, the male socket contacts 210 are arranged parallel to one another and parallel to the insertion direction E (see also Fig. 2 ).

[0080] A detent 224 is formed substantially in the center of the male insulating body 220 along an annular region on its outer surface. The detent 224 has teeth and beveled indentations arranged therebetween. The detent 224 serves, as described below, to inhibit the screwing movement of the screw ring 260 and thus to secure the plug connection.

[0081] The connection area 222 is essentially formed as a solid cylinder with a constant outer diameter. Thus, the connection area 222 forms an end piece of the male insulating body 220, onto which the shielding housing 270 (see Fig. 5 ) can be put on.

[0082] The male insulating body 220 further includes a nub 225 on its outer surface, which can be inserted into a recess 172 of the shield housing 270 and is configured to align the shield housing 270 relative to the male insulating body 220. In the embodiment shown, the nub 225 is configured adjacent to the grid 224 on the connection area 222, i.e., on the end piece of the male insulating body 220 with a constant outer diameter.

[0083] Figure 5shows a shielding housing 170 for a female screw connector 100. A corresponding shielding housing 270 for a male screw connector 200 can be constructed identically. The shielding housing 170 is essentially cylindrical, more precisely essentially as a tubular cylinder shell 174. The cylinder shell 174 is designed and provided to electrically shield the female or male socket contacts 110 or 210, respectively, at least at their wiring area 122 or 222, respectively, and any connected wires of a cable, from the outside. The shielding housing 170 can be formed from a metallic material and shield the screw connector 100 or 200 from interference with neighboring cable lines or the like. The cylinder shell 174 has a constant inner diameter essentially over the entire cylinder height.In particular, the shielding housing 170 does not have a widened or tapered shielding area, but is essentially designed as a piece of pipe and can shield the connection area 122 or 222 radially outward.

[0084] The shielding housing 170 has an outer stop or shoulder 171 at one cylinder end, at which the cylinder shell has a substantially annular thickening or widening towards the outside. The shoulder 171 serves as a stop for the female or male screw ring 160 or 260. To form the shoulder 171, either additional material can be provided or the cylinder shell 174 can be bent slightly outwards. The shoulder 171 is formed on the cylinder end of the shielding housing 170 that faces the insertion end and with which the shielding housing 170 is plugged onto the end piece (i.e., the connection area 122) of the female insulating body 120. The shielding housing 270 is also plugged onto the connection area 222 of the male insulating body 220 with the shoulder 171 facing forward.

[0085] The shoulder 171 surrounds the cylinder casing almost completely. However, at one position of the cylinder casing 174, the shoulder 171 has a recess 172 formed therein, into which the studs 125 and 225 of the female and male insulating bodies 120 and 220 are inserted during assembly of the screw connector.

[0086] Furthermore, one or more holes 173 can be formed in the cylinder jacket 174, which holes can be created when a casting tool is applied, for example in a tin die-casting process.

[0087] Figure 6 shows a conventional locking ring 150 for a female screw connector 100. A corresponding, e.g. identically constructed locking ring 250 for a male screw connector is not specifically shown in the figures, but can be used with a male screw connector, see also Figure 2The locking ring 150 is designed as an open ring with an opening 153. The extension of the locking ring 150 in the insertion direction corresponds approximately to the width of the notch 124 in the insertion direction E. The locking ring 150 is designed and provided to encompass the notch 124 so that a locking lug 151 engages in the notch 124. The locking lug 151 points radially inward toward the center axis of the screw connector, essentially perpendicular to the insertion direction E.

[0088] The locking ring can be connected to the female screw ring 160 in a rotationally fixed manner via a fastening element 152 of the locking ring 150, see also the Figures 7A and 7B For this purpose, the female screw ring 160 has a fastening engagement 165 in which the fastening element 152 protruding from the locking ring 150 in the insertion direction E engages in such a way that when the female screw ring 160 is rotated, the locking ring 150 is automatically rotated as well.

[0089] The diameter of the locking ring 150 is dimensioned in such a way that it encompasses the notch 124 from the outside, and furthermore it is dimensioned in such a way that it fits comfortably, ie with a certain amount of play, into a guide groove 163 of the female screw ring 160, see also the Figure 7B The opening 153 of the locking ring 150 ensures the clearance for the ring radius in order to meet these dimensioning requirements and to enable easy insertion of the locking ring 150 into the guide groove 163.

[0090] The locking ring 150 further comprises one or more thickened portions 154, which ensure an improved fit of the locking ring 150 in the guide groove 163 of the female screw ring 160. The locking ring 150 is conventionally made of a plastic, in particular a hard plastic.

[0091] In an installed position or in the assembled state, the locking ring 150 surrounds the insulating body from the outside and is positioned such that a normal through the ring center is arranged parallel to the insertion direction E.

[0092] The Figures 7A and 7B show the female screw ring 160 from two different perspectives. The female screw ring 160 has a grooved grip area 161 on its outer side to facilitate screwing the plug connection. The screw ring 160 is essentially designed as a hollow cylinder, which has a plug-in opening 162 on its plug-in end, into which the male screw ring 260 of a male screw connector can be inserted (see also Figures 8A and 8B ). The plug-in opening 162 is dimensioned such that between a terminal edge 164 of the female screw ring 160 and the outer surface of the plug-in area 121 of the female insulating body 120 (see also Figure 3) a cylinder-shaped cavity for receiving the plug-in area 221 of the insulating body 220 (see also Figure 4 ) and a part of the male screw ring 260 of a male screw connector. In a part of the end edge 164, the fastening engagement 165 is designed such that it entrains the fastening element 152 of the locking ring 150 when the female screw ring 160 is rotated. The locking ring 150 is arranged in the guide groove 163, which is formed on the inside of the female screw ring 160 adjacent to the end edge 164. The screw direction of the rotational movement is arranged circularly around the insertion direction E. The sealing ring 140 can be arranged inside the female screw ring 160, which is shown in the Figures 7A and 7B is not shown.

[0093] On the inner surface of the cylindrical female screw ring 160, an internal thread 166 is formed into which an external thread 266 of the male screw ring 260 can be screwed.

[0094] The Figures 8A and 8B show the male screw ring 260 of the male screw connector 200 and the seat of a corresponding locking ring 250 in a guide groove 263 of the male screw ring 260. Similar to the female screw ring 160 of the female screw connector 100, the male screw ring 260 of the male screw connector 200 also has a grooved grip area 261, an insertion end 262, a guide groove 263 for the locking ring 250, an end edge 264 for the stop of the locking ring 250, and a fastening engagement 265. The respective functions and dimensions of the components of the male and female screw connectors correspond to one another.

[0095] The screw rings 160 and 260 are rotatably mounted around the insulating body 120 and 220, respectively, so that the gripping areas 161 and 261 are arranged on the outer surface of the screw connector.

[0096] In order to enable a screwing movement of the female screw ring 160 around the female insulating body 120, the female screw ring 160 loosely surrounds the female insulating body 120, i.e., with a play between the screw ring 160 and the insulating body 120. At the end of the female screw body 160 that is facing away from the insertion end 100E of the female screw connector 100, i.e., "rear," the female screw ring 160 has an internal stop 167 (cf. Fig. 2 ). The inner stop 167 can be formed as a part of the female screw ring 160 with a reduced inner diameter.

[0097] Likewise, the male screw ring 260 can loosely engage the male insulating body 220, i.e., with a clearance between the screw ring 160 and the insulating body 120, to allow a screwing movement of the male screw ring 260 around the male insulating body 220. At the end of the male screw ring 260 facing away from the insertion end 200E of the male screw connector 200, i.e., "rear," the male screw ring 260 has an internal stop 267 (see. Fig. 2 ). The inner stop 267 can be formed as a part of the male screw ring 260 with a reduced inner diameter.

[0098] The inner stops 167 and 267 can prevent the insulating bodies 120 and 220 from slipping out of the associated screw ring 160 and 260, respectively.

[0099] For this purpose, the inside stop 167 of the Figure 2 shown female screw connector 100 with shield housing 170 to the outer stop 171 of the shield housing 170 (cf. Fig. 2 bottom right). The inner stop 267 of the second male screw connector 200 with shield housing 270 abuts the outer stop 171 of the shield housing 270 (cf. Fig. 2 bottom left).

[0100] The locking ring 150 and the locking ring 250, in cooperation with the detent 124 and 224 and the screw ring 160 and 260, provide locking of the screw connection between the female screw connector 100 and the male screw connector 200.

[0101] The insulating body 120 and / or 220 electrically insulates the individual socket contacts 110 and 210 from one another and can be made of an elastic potting material which, in addition to the locking effect, also provides friction to prevent the screw connection from being unscrewed. The locking mechanism at least inhibits the respective screw ring from being screwed in the unscrewing direction. In the closing direction, the locking mechanism is not necessarily required, but can also at least partially inhibit the respective screw ring from being unscrewed. The locking mechanism inhibits and / or prevents the screw lock of the plug connection from being unscrewed, for example, in the event of vibration from industrial machinery or the like. The locking mechanism is not permanent but is designed to be removable and allows the screw connection to be intentionally unscrewed.

[0102] The Figures 9A to 9Dshow, in four different perspective views, a female shield contact ring 130 according to the invention according to a preferred embodiment. Similar to the conventional locking ring 150 described above, the shield contact ring 130 is also designed as an open ring and thus has an opening 137, a first end section 139a, a second end section 139b, and a central section 138. At the first end section 139a, the female shield contact ring 130 has a first female contact or spring element 132, which is designed and provided to contact the female shield housing 174, in an installed position or in the assembled state of the female screw connector 100, in particular on or directly adjacent to the shoulder 171 of the female shield housing 174.At the central section 138, the female shield contact ring 130 has a fastening element 134 which, in its basic function, corresponds to the fastening element 152 of the conventional locking ring 150 described above, i.e. it is designed and intended to connect the female shield contact ring 130 in a rotationally fixed manner to the female screw ring 160. In comparison to the fastening element 152 of the conventional locking ring 150, however, the fastening element 134 of the shield contact ring 130 according to the invention has two fastening lugs 134a and 134b as well as a second female contact or spring element 134c. The two fastening lugs 134a and 134b are designed and intended to engage with the fastening engagement 165 of the female screw ring 160 (see the . Figures 7A and 7B) to be engaged. The second female spring element 134c, which is designed as a projection or tongue and extends in the radial direction towards the interior of the shield contact element 130, i.e. in the direction of the opening 137 and / or in the direction of the central section 138 of the shield contact element 130, is designed and provided to contact the female shield housing 170 in an installed position or in the mounted state. Since the female shield contact ring 130 rotates with the female screw ring 160, the first and second spring elements 132, 136 are each designed as sliding contacts. Advantageously, the friction of these sliding contacts which occurs during rotation ensures that the screw connection does not come loose so easily, for example in the event of vibrations, and thus ensures increased stability and robustness.To enable electrical contact between the female screw ring 160 and the female shield housing 170, the shield contact ring 130 is made or formed entirely or at least partially from a conductive material, in particular metal. The conductive material can in particular be a copper alloy, which preferably has a surface coating, for example, made of tin, nickel, silver, and / or gold. At the second end portion 139b, the female shield contact ring 130 has a third female spring element 136, which, due to its function, is also referred to as a female arresting element.The female locking element 136 is designed and provided, in the assembled state, to engage in a notch of the female shield housing 170 (not explicitly shown here) or in a notch 124 of the female insulating body 124 in order to achieve locking, as already described above in connection with the conventional locking ring 150. The female shield contact ring 130 thus advantageously additionally functions as a locking ring in addition to its function as an electrical contact element between the female screw ring 160 and the female shield housing 170. The female shield contact ring 130 according to the invention can thus replace the conventional locking ring 150 and, moreover, ensures an improved shielding effect of the screw connector.

[0103] As is evident from the Figure 9CAs can be seen, the female shield contact ring 130 is designed such that the first female spring element 132 and the female locking element 136 are offset from one another by a distance d in an axial direction of the female shield contact element 130, which in the assembled state corresponds to the insertion direction E. For this purpose, both the first female spring element 132 and the female locking element 136 are designed as a taper of the female shield contact element 130. In this way, the dual functionality of the shield contact ring 130 can be achieved, namely an electrical contact between the female screw ring 160 and the female shield housing 170 on the one hand and an inhibition of the female screw ring 160 on the other.

[0104] Figure 10 shows in a perspective view the arrangement of the female shield contact ring 130 of the Figures 9A to 9Dinside a female screw ring 160. In particular, the female shield contact ring 130 is arranged in the female screw ring 160 in a manner analogous to the above-described locking ring 150 of a conventional screw connector. The two fastening lugs 134a and 134b of the fastening element 134 engage in the fastening recess 165 of the female screw ring 160 and thus effect a rotationally fixed connection between the female shield contact element 130 and the female screw ring 160.

[0105] The Figures 11A to 11C show in three different perspective views an arrangement of the female shield contact ring 130 of the Figures 9A to 9D on a female insulating body 120 and the female shield housing 170. The female screw ring 160, in which the shield contact ring 130 is Figure 10 in the assembled state, has been placed in the Figures 11A to 11C omitted. In addition, the Figures 11A to 11Cbut an optional sealing ring 140 can be seen in each case.

[0106] As can be seen from the Figures 11A to 11C As can be seen, in the mounted state the female locking element 136 engages in the locking 124 of the female insulating body 120 and thereby inhibits an unscrewing movement of the (in the Figures 11A to 11C not shown) female screw ring 160. It can also be seen that the second female spring 134c of the female fastening element 134 as well as the first female spring 132 each touch or contact the female shield housing 170. By means of the female shield contact ring 130, the female shield housing 170 and the (in the Figures 11A to 11C not shown) female screw ring 160, which results in an improved shielding effect. Figure 11C It can be seen in particular that the first female spring element 132 contacts the female shield housing 170 at or immediately adjacent to the shoulder 171.

[0107] The diameter of the female shield contact ring 130 is dimensioned in such a way that it encompasses the grid 124 from the outside, and furthermore it is dimensioned in such a way that it fits comfortably, ie with a certain amount of play, into a guide groove 163 of the female screw ring 160, see also the Figure 7B The opening 137 of the female shield contact ring 130 ensures the clearance for the ring radius in order to meet these dimensioning requirements and to enable easy insertion of the female shield contact ring 130 into the guide groove 163.

[0108] Figure 12ashows a perspective view of a male shield contact ring 230 according to a preferred embodiment of the present invention. Like the female shield contact ring 130, the male shield contact ring 230 is also designed as an open ring with an opening 237, a central portion 238, a first end portion 239a, and a second end portion 239b.

[0109] The male shield contact ring 230 is designed analogously to the female shield contact ring 130 and is intended to be connected in a rotationally fixed manner to the male screw ring 260 when assembled. For this purpose, the male shield contact ring 230 has a fastening element 234 on the central section 238, which, when assembled, engages in the fastening engagement 265 of the male screw ring 260 (see Figure 8A) engages. Furthermore, the male shield contact ring has a first male spring element 232 at the first end section 239a for electrically contacting the male shield element 270 and a male inhibiting element 236 at the second end section 239b for inhibiting an unscrewing movement of the male screw ring 260 (in Figure 12a not shown). The male locking element 236 is designed as a spring element, similar to the female locking element 136. The first male spring element 232 has essentially the entire width of the male shield contact ring 230, while the male locking element 236 is designed as a taper.

[0110] Figure 12b shows in a perspective view the arrangement of the male shield contact ring 230 from Figure 12a on a male insulating body 220 and a male shielding housing 270. For reasons of clarity, the Figure 12bthe male screw ring 260, with which the male shield contact ring 230 is connected in a rotationally fixed manner when mounted (compare the Figures 8A and 8B ) is omitted. As can be seen Figure 12B As can be seen, in the assembled state, the male locking element 236 engages the locking groove 224 of the male insulating element 220. The first male spring element 232 contacts the shoulder 271 of the male shielding housing 270.

[0111] The diameter of the male shield contact ring 230 is dimensioned in such a way that it encompasses the grid 224 from the outside, and furthermore it is dimensioned in such a way that it fits comfortably, ie with a certain amount of play, into a guide groove 263 of the male screw ring 260, see also the Figure 8BThe opening 237 of the male shield contact ring 230 ensures the clearance for the ring radius in order to meet these dimensioning requirements and to enable easy insertion of the male shield contact ring 230 into the guide groove 263.

[0112] The male shield contact ring 230 may have a second male spring element (not shown in the figures) which, when assembled, contacts the male shield housing 270. In particular, such a second male spring element may be part of the fastening element 234 of the male shield contact ring 230.

[0113] Figure 13shows a screw system 300 according to the invention with a female screw connector 100 according to the invention and a male screw connector 200 according to the invention according to a preferred embodiment. The female screw connector 100 has a female screw ring 160, a female shield housing 170 and a female shield contact ring 130. The male screw connector 200 has a male screw ring 260, a male shield housing 270 and a male shield contact ring 230. The female and male shield housings 170, 270 can be of identical construction. The screw rings 160 and 260 are in the Figure 13 each shown transparently so that the shield contact rings 130 and 230 arranged inside the respective screw rings can also be seen. List of reference symbols

[0114] 100 Female connector 100E Insertion end of the female connector 100K Cable end of the female connector 110 Female socket contact 120 Female insulator 120E Insertion end of the female insulator 120K Cable end of the female insulator 121 Mating area 122 Termination area 123 Insertion hole 124 Pitch 125 Stud 126 Groove 127 End face 130 Female shield contact ring 132 First female spring element 134 Fastening element 134a Fastening lug 134b Fastening lug 134c Second female spring element / tongue 136 Third female spring element / female retaining element 137 Opening 138 Middle section 139a First end section 139b Second end section 140 Sealing ring 150 Retaining ring 151 Locking lug 152 Fastening element / fastening lug 153 Opening 154 Thickening 160 Female screw ring 161 Grip area 162 Plug-in opening 163 Guide groove 164 End edge 165 Fastening recess 166 Internal thread 167 Internal stop 170 Umbrella housing 171 External stop / shoulder 172 Recess173Hole 174Cylinder shell 180Outer sleeve 200Male connector 200EMale connector insertion end 200KFemale connector cable end 210Male socket contact 220Male insulator 220EMale insulator insertion end 220KMale insulator cable end 221Mating area 222Termination area 224Detent 225Nub 226Protrusion / spring 227Opening 228Outer stop 230Male shield contact ring 232First male spring element 234Fastening element 236Male locking element 237Opening 238Middle section 239aFirst end section 239bSecond end section 250Locking ring 260Male screw ring 261Grip area 262Insertion end 263Guide groove 264End edge 265Fastening recess 266External thread 267Inner stop 270Shield housing 271Outer stop / shoulder 280Outer sleeve 300Screw system / plug-in system ELapplication direction dDistance

Claims

1. A female screw connector (100) for a screw system (300), having: - a female screw ring (160) with an insertion-side end into which a male screw ring (260) of a male screw connector (200) of the screw system (300) is screwable, and - a female shielding housing (170) for at least partially shielding the female screw connector (100), characterized in that: the female screw connector (100) has a female shielding contact ring (130) that, in an assembled state, electrically connects the female screw ring (160) and the female shielding housing (170) to one another; the female screw ring (160) has a fastening engagement (165) and the female shielding contact ring (130) has a fastening element (134) that, in the assembled state, is arranged in the fastening engagement (165) of the female screw ring (160); and the female shielding contact ring (130) has a female spring element (134c) that, in the assembled state, contacts the female shielding housing (170) and is part of the fastening element (134) of the female shielding contact ring (130).

2. A male screw connector (200) for a screw system (300), having: - a male screw ring (260) with an insertion-side end that is screwable into a female screw ring (160) of a female screw connector (100) of the screw system (300), and - a male shielding housing (270) for at least partially shielding the male screw connector (200), characterized in that: the male screw connector (200) has a male shielding contact ring (230) that, in an assembled state, electrically connects the male screw ring (260) and the male shielding housing (270) to one another; the male screw ring (260) has a fastening engagement (265) and the male shielding contact ring (230) has a fastening element (234) that, in the assembled state, is arranged in the fastening engagement (265) of the male screw ring (260); and the male shielding contact ring (230) has a male spring element that, in the assembled state, contacts the male shielding housing (270) and is part of the fastening element (234) of the male shielding contact ring (230).

3. A screw system (300) with a female screw connector (100) according to claim 1 and a male screw connector (200) according to claim 2, which can be screwed together.

4. The screw system (300) according to claim 3, wherein the female shielding contact ring (130), in the assembled state, is arranged in a guide groove (163) of the female screw ring (160) and / or the male shielding contact ring (230), in the assembled state, is arranged in a guide groove (263) of the male screw ring (260).

5. The screw system (300) according to claim 3 or 4, wherein the female shielding contact ring (130) has at least one further female spring element (132) that, in the assembled state, contacts the female shielding housing (170), and / or the male shielding contact ring (230) has at least one further male spring element (232) that, in the assembled state, contacts the male shielding housing (270).

6. The screw system (300) according to one of claims 3 to 5, wherein the female shielding housing (170) has a rasterization on an outer surface of the female shielding housing (170) and the female shielding contact ring (130) has a female blocking element (136) that, in the assembled state, is in engagement with the rasterization of the female shielding housing (170), and / or wherein the male shielding housing (270) has a rasterization on an outer surface of the male shielding housing (270) and the male shielding contact ring (230) has a male blocking element (236) that, in the assembled state, is in engagement with the rasterization of the male shielding housing (270).

7. The screw system (300) according to one of claims 3 to 5, wherein the female screw connector (100) further has: - a female insulating body (120) that is arrangeable inside the female screw ring (160) and that is insertable into a male insulating body (220) of the male screw connector (200) along an insertion direction (E); and wherein the male screw connector (200) further has: - the male insulating body (220) that is arrangeable inside the male screw ring (260) and into which the female insulating body (120) is insertable along the insertion direction (E), wherein the female insulating body (120) has a rasterization (124) on its outer surface and the female shielding contact ring (130) has a female blocking element (136) that, in the assembled state, is in engagement with the rasterization (124) of the female insulating body (120); and / or wherein the male insulating body (270) has a rasterization (224) on its outer surface and the male shielding contact ring (230) has a male blocking element (236) that, in the assembled state, is in engagement with the rasterization (224) of the male insulating body (270).

8. The screw system (300) according to claim 6 or 7 in combination with claim 5, wherein the female shielding contact ring (130) is formed as an open ring with a first and second end portion (139a, 139b), wherein the further female spring element (132) is formed at the first end portion (139a) of the female shielding contact ring (130) and the female blocking element (136) is formed at the second end portion (139b) of the female shielding contact ring (130); and / or wherein the male shielding contact ring (230) is formed as an open ring with a first and second end portion (239a, 239b), wherein the further male spring element (232) is formed at the first end portion (239a) of the male shielding contact ring (230) and the male blocking element (236) is formed at the second end portion (239b) of the male shielding contact ring (230).

9. The screw system (300) according to claim 8, wherein the further female spring element (132) and the female blocking element (136) are each formed as a taper of the female shielding contact ring (130), and wherein the further female spring element (132) is offset with respect to the female blocking element (136) along an axial direction of the female shielding contact ring (130); and / or wherein the male blocking element (236) is formed as a taper of the male shielding contact ring (230).

10. A method for manufacturing a female screw connector (100) for a screw system (300), comprising the steps of: - providing a female screw ring (160) with an insertion-side end that is screwable into a male screw ring (260) of a male screw connector (200) of the screw system (300), and - providing a female shielding housing (170) for at least partially shielding the female screw connector (100), characterized in that a female shielding contact ring (130; 230) is further provided, which is arrangeable in a guide groove (163; 263) of the female screw ring (160) and is configured to electrically connect the female screw ring (160) and the female shielding housing (170) to one another in an assembled state; wherein the female screw ring (160) has a fastening engagement (165) and the female shielding contact ring (130) has a fastening element (134) that is arrangeable in the fastening engagement (165) of the female screw ring (160); and wherein the female shielding contact ring (130) has a female spring element (134c), which is part of the fastening element (134) of the female shielding contact ring (130) and is contactable with the female shielding housing (170).

11. A method for manufacturing a male screw connector (200) for a screw system (300), comprising the steps of: - providing a male screw ring (260) with an insertion-side end that is screwable into a female screw ring (160) of a female screw connector (100) of the screw system (300), and - providing a male shielding housing (270) for at least partially shielding the male screw connector (200), characterized in that a male shielding contact ring (230) is further provided, which is arrangeable in a guide groove (263) of the male screw ring (260) and is configured to electrically connect the male screw ring (260) and the male shielding housing (270) to one another in an assembled state; wherein the male screw ring (260) has a fastening engagement (265) and the male shielding contact ring (230) has a fastening element (234) that is arrangeable in the fastening engagement (265) of the male screw ring (260); and wherein the male shielding contact ring (230) has a male spring element that is part of the male fastening element (234) of the male shielding contact ring (230) and is contactable with the male shielding housing (270).