Shielding contact element and method for manufacturing such a shielding contact element - Patents.com

Abstract

To optimally utilize an installation space while improving a shielding property.SOLUTION: There is provided a shield contact element for shielding a plug connection portion, e.g. a high voltage plug connection portion. The shield contact element 100 includes a cylindrical housing shell which extends in an axial direction for receiving a plug connector such as a high voltage plug connector, the plug connector connecting to a plug contact element to form the plug connection portion. The shield contact element includes at least one a contact lamella which extends in the axial direction for forming electrical connection between a shield for shielding the plug contact element and the housing shell. A contact foot portion of the contact lamella is disposed in a recess formed in the housing shell to electrically contact the housing shell with the shield in the recess.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a shielding contact element and a method for manufacturing such a shielding contact element. [Background technology]

[0002] The shielding of electro-technical devices serves to keep force fields away from the device. These force fields occur especially at relatively high frequencies and are electric and / or magnetic fields. Especially in the case of high voltage (HV) cables, it may be necessary to protect the surroundings from the force fields emitted by the cables.

[0003] Shielded contact elements are used, for example, in HV cables for electric or hybrid vehicles, where shielding may be required to keep other on-board electronics operating in the lower voltage range (e.g. 12 or 24 volts) free from interference due to the HV voltages used, for example in the range from about 300 volts to 800 volts.

[0004] For this purpose, the shield of the cable must also be led to the plug connector so that an effective shielding and / or grounding occurs between the plug and the plug contact elements, e.g. customer sockets, headers, cables or elements, also referred to as customer units or customer contact elements. For this purpose, the shielding contact elements must loop through this shield when the plug and the plug contact elements are connected by the plug insertion process. Grounding here means in particular that an optimal path is provided for the current, e.g. by having fewer obstacles, i.e. a large number of contacts, which have a low resistance and therefore allow a reduction in the overall resistance. Grounding in particular means that an optimal path is provided for the current, e.g. by using a large number of contacts, e.g. with a low resistance, along the entire connector system from the cable to the customer unit, i.e. a parallel connection, which allows a reduction in the overall resistance. This provides an optimal grounding for the current.

[0005] For example, as shown in Fig. 29, the shield contact element is bent from a sheet metal to form a cylinder for receiving a plug connector. A plurality of contact lamellae 1120 are used to contact the shield contact element to the shield of an HV cable (not shown). In the shield contact element, the plurality of contact lamellae are formed by stamping the sheet metal with a gap between adjacent contact lamellae as shown in Fig. 30.

[0006] However, with this known shielding contact element, due to the gaps between the contact lamellae, there is a risk that the shielding is insufficient, since the gaps between the contact lamellae cannot provide shielding. However, the gaps cannot be eliminated, otherwise at least flexibility cannot be ensured. Furthermore, it is difficult to manufacture without gaps. For example, a gap-free arrangement of the contact lamellae leads to wear, which causes the plug connector to become dirty.

[0007] Furthermore, the separate shield contact element has the problem that it must be constructed in two parts as shown in Figure 31. This complicates assembly.

[0008] Moreover, other shielding contact elements have bent contact lamellae 2120 as shown in FIG. 32, which have the problem that they protrude from the housing shell. Thus, the shielding applied to the contact lamellae (not shown) can only be provided at a distance from the housing shell. This creates a gap that significantly affects the shielding properties. In general, to compensate for the effects of shielding losses due to the gap, a ratio of gap to axial overlap is usually required to be 1:5. In other words, a gap of 1 mm requires an overlap of 5 mm in length to provide sufficient shielding properties. However, such an axially long shielding can be a challenge with respect to limited installation space.

[0009] Another problem with the solution shown in Fig. 32 is that the ground path is extended through the U-shaped bent contact lamella, in particular creating a U-shaped conduction path, i.e. axially forward and backward, which creates eddy currents and thus reduces the shielding. Summary of the Invention [Problem to be solved by the invention]

[0010] The object of the present invention is to overcome the above-mentioned drawbacks. One object of the present invention is to optimize the use of installation space while improving the shielding. Another object is to simplify the assembly. A further object is to simplify the manufacture of the shield contact. [Means for solving the problem]

[0011] The above-mentioned object is achieved by the subject matter of the independent patent claims. Advantageous further developments are the subject matter of the dependent patent claims.

[0012] In particular, this object is solved by a contact foot of the contact lamella, which is arranged in a recess formed in the housing shell, such that the contact foot can electrically contact the housing shell to the shield via the recess.

[0013] In other words, this contact with the contact lamella in the recess makes it possible to shorten the current path, and in addition, this arrangement makes it possible to prevent the current path from being extended, for example via a U-turn in the contact lamella.

[0014] As used herein, a recess means a hollow body that is open on one side. The recess can be obtained, for example, by deep drawing a sheet metal. The sheet metal is then bent to form a cylindrical housing shell. The recess makes the housing shell form a continuous shield in the area of ​​the contact lamellae. This improves the shielding capacity since there are no more holes between the contact lamellae as shown in FIG. 29. Furthermore, the recess makes it possible to reduce the gap between the housing shell and the shield as discussed above with respect to FIG. 32. This further improves the shielding function.

[0015] Other advantages of the present invention are discussed below.

[0016] In particular, the shield contact element for shielding a plug connection comprises an axially extending cylindrical housing shell.

[0017] where 、 tube shape is understood as a geometrical body having two parallel, flat and congruent bases connected to one another by a shell, also referred to here as housing shell. The bases are for example circular, elliptical or polygonal, in particular rectangular.

[0018] Such a housing shell may serve to accommodate a plug connector, for example a high-voltage plug connector, which serves for example to connect devices, for example batteries and motors, via the plug connector with plug contact elements, for example cables, high-voltage cables of customer contact elements, headers or sockets. In particular, shield contact elements may comprise such a plug connector.

[0019] In this context, a plug connector is understood as an element which serves the function of separating and connecting electric wires. The form-locking, also called form-fit connection, of the plug part ensures in particular that the connection parts are properly aligned. The form-locking connection is formed by the interlocking of at least two connection counterparts. As a result, the connection counterparts cannot be uncoupled even in the absence or interruption of the force transmission. In other words, in a form-locking connection, one connection counterpart interferes with the other.

[0020] Furthermore, the shield contact element comprises an axially extending contact lamella, which therefore extends in the same direction as the housing shell.

[0021] As used herein, contact lamellae (also referred to herein as lamellae) are preferably small plates arranged in a structure of similarly arranged, often parallel, lamellae. Lamellae are small flat bodies. Contact lamellae are therefore smaller than the housing shell.

[0022] The contact lamellae are used to form an electrical connection between a housing shell for shielding a plug and a plug contact element, e.g. a shield for shielding a high voltage cable. In other words, the contact lamellae are used to form an electrical connection between two shielding components, e.g. a shielding component, i.e. a housing shell and a customer unit, or between a shielding component and a cable shield. As used herein, shielding is understood to protect, e.g., electro-technical equipment from electric and / or magnetic fields, which occur especially at relatively high frequencies. Furthermore, the contact lamellae are used to allow an optimal contact to allow unwanted shield currents to flow to ground in the shortest possible path. The number of contact lamellae and the magnitude of the contact resistance are therefore relevant.

[0023] In other words, the cylindrical housing shell of the shield contact element extends in the axial direction. The housing shell shields the plug connector, which allows two mating parts to be plugged together in the axial direction, e.g., to connect a device with the plug contact element. The axial direction is therefore the mating direction.

[0024] Furthermore, the shield contact element comprises a contact lamella which allows the housing shell to be connected in the axial direction to a plug contact element for shielding the plug, e.g. the shield of an HV cable. Thus, the electrical connection required for the shielding can be made from the plug contact element, e.g. the shield of an HV cable, to the housing shell. In this description, a connector may be, e.g., a plug or a header. The plug contact element may be, e.g., a counterpart of a plug or a header. Furthermore, the plug contact element may be a cable or a customer unit. Thus, the plug may be connected to the plug contact element. In this step, the shield of the plug is also connected to the shield of the plug contact element.

[0025] In other words, the plug contact elements, e.g. the shield of the HV cable, are connected to the shield of the plug, also called the plug shield. The shield may further be connected to the shield of the header, also called the socket. The shield of the header is connected to the customer unit. Thus, a current path from the cable to the customer unit is formed in the shield. Thus, a large number of contacts with low resistance are required between the components. These contacts are used for optimal grounding of the connector system. The above-mentioned contact lamella slightly reduces radiation, since the shield current can quickly flow out. In particular, the contact lamella includes a contact foot. A first contact foot is used to form a contact between the contact lamella and the housing shell, and a second contact foot is used to form a contact between the contact lamella and the shield of the HV cable.

[0026] Furthermore, the shielding contact element comprises a recess formed in the housing shell. As mentioned above, the recess is a hollow body that is open on one side. In other words, the recess is formed perpendicular to the axial direction. The recess can thus be either a protrusion or a depression formed by the housing shell perpendicular to the mating direction. The recess, i.e. the hollow body that is open on one side, is thus open in particular to the interior space formed by the housing shell for receiving the plug connector and forms together with the housing shell a closed surface in the region of the contact lamella with respect to the surroundings that are to be shielded by the housing shell.

[0027] Alternatively, the recess may be open to the surroundings.

[0028] Furthermore, the recess serves the function of enabling the contact foot in the recess to make an electrical contact between the housing shell and the shield. Since the recess is formed from the housing shell, the housing shell with the recess compensates for the gap between the contact lamellae. In particular, the housing shell and the recess are formed in one piece from sheet metal, for example by deep drawing.

[0029] Due to the recess being a protrusion or depression perpendicular to the mating direction, i.e. formed radially, the gap between the shield and the shield contact element is reduced. This allows for a saving in installation space and / or an improvement in shielding. In comparison with a similar solution without a recess, for the same radial installation space in diameter, the rear overlap of the lamella allows it to be designed axially longer without loss of shielding effect. At the same time, the axial length of the shield can be kept substantially the same. This applies in particular for contact lamellas bent by 180°. In a similar solution without a recess, for example in the case of a contact lamella bent by 180°, the length of the lamella is always also part of the length of the shield. Therefore, a similar solution without a recess, for example in the case of a contact lamella bent by 180°, requires a larger installation space.

[0030] Typically, the housing shell has a diameter of about 10 mm to 50 mm. Concurrently or alternatively, the recess protrudes perpendicularly to the mating direction by 0.5 mm to 2 mm.

[0031] Furthermore, the recess may extend from one axial end of the cylindrical housing shell in the axial direction to the other end of the housing shell. The cylindrical housing shell has two ends, i.e. an edge between the bottom surface of the cylinder and the shell. The arrangement of the recess at one end optimizes the use of the installation space and facilitates handling for plug insertion. In particular, the recess may extend only to the central region of the housing shell.

[0032] Furthermore, the contact lamella may include a second contact foot, which protrudes from the housing shell in a direction opposite to the direction of the recess.

[0033] As discussed above, the recess is open axially or perpendicular to the mating direction. If the recess is open to the interior space, the second contact foot projects into the interior space. If the recess is open to the periphery, the second contact foot projects outwardly from the housing shell.

[0034] Such a design allows the second contact foot to be form-fitted to the shield. By plugging the plug connector, the second contact foot is pressed towards the first contact foot, resulting in a mechanical and electrical connection between the shield and the housing shell. In other words, the contact lamella is a spring element, e.g. one of the contact feet is directly or indirectly connected to the housing shell.

[0035] Springs are technical components, usually made of metal, which are sufficiently elastically deformable in practical use. The elastic deformation of a spring is usually bending or torsion. Contact lamellae thus enable a form-locking and / or force-locking connection.

[0036] According to one example of the connection, the contact lamella may include a third contact foot. Thus, the contact lamella rests either on the shield or on the housing shell at two points. It is particularly advantageous if the first and third contact feet are arranged in a recess and the second contact foot is adapted to press against the shield. In another example, the second contact foot may be arranged between the first and third contact feet. Thus, the end of the contact lamella is protected in the recess. Thus, during mating, the gap at the base of the contact lamella closes, which increases the normal force, since this forms a force triangle on both legs of the bending beam. Thus, the point of the third contact foot allows a larger normal force and a second current path, both of which reduce the contact resistance.

[0037] Furthermore, the shield contact element may include a U-shaped connector having two legs for fixing the contact lamella to the housing shell.

[0038] In other words, the contact lamella is integrally formed with the housing shell, which means that both parts are made, for example, from one piece or from inseparable parts. Such an integral design simplifies the handling of the shielding element.

[0039] Such a shielding element can be produced particularly easily if the first contact foot is placed in the recess by bending the U-shaped connector.

[0040] In particular, one leg of the U-shaped connector and the housing shell may be connected via a recess. In other words, the U-shaped connector and the housing shell engage in the same area of ​​the base. This allows the U-shaped connector to be bent in only one direction to allow the contact foot to be placed in the recess, simplifying manufacturing.

[0041] In particular, the legs of the U-shaped connector may be fixed to the axial ends of the cylindrical housing shell. For example, if the recess extends from the axial end as discussed above, the U-shaped connector may also extend from said axial end. This allows for a particularly compact design.

[0042] Furthermore, the shield contact element may comprise an offset piece, which is arranged between the leg of the U-shaped connector and the housing shell, which makes it possible to offset the U-shaped connector in the direction of the recess. Such an offset piece makes it possible to optimize the bending radius and requires a particularly small installation space.

[0043] It is particularly advantageous if the U-shaped connector, the offset piece, the contact lamella and the housing shell are all in one piece.

[0044] Furthermore, the shield contact element may comprise a plurality of contact lamellae, see above for a description of each of the plurality of contact lamellae.

[0045] In particular, two adjacent contact lamellae are arranged with a distance between them, which makes it possible to produce the contact lamellae particularly easily, for example by punching the contact lamellae such that the area between the contact lamellae is milled away.

[0046] Furthermore, the spacing between adjacent contact lamellae enhances cleanability since adjacent contact lamellae do not have a friction surface, thereby eliminating wear caused by particles. Multiple contact lamellae are advantageous for interconnect properties and shielding properties.

[0047] In addition, a large number of contact lamellae is advantageous for the mechanical and electrical connection properties, i.e. current path and shielding. Multiple contact lamellae allow for adjusting the magnitude of the normal force due to the sliding friction of the lamellae against the contact counterpart. The contact transfer resistance, which should be low for an optimal current path, depends on the electrical material properties and the (mechanical) normal force. Furthermore, the mating force may be limited, for example, by having to be suitable for manual assembly or be large enough to prevent abrasion of the surfaces.

[0048] Furthermore, the housing shell of the shielding contact element may include two opposing fastening protrusions. These fastening protrusions are formed from the housing shell. Similar to the recesses described above, the fastening protrusions are hollow bodies that are open on one side. In other words, the fastening protrusions are formed perpendicular to the axial direction. They do not create gaps in the shielding, so that they have little or no effect on the shielding properties. In other words, the goal is that the fastening protrusions do not open up. They are deep-drawn without gaps or are broken open from the housing shell on one side without gaps. This eliminates gaps in the shielding jacket. However, certain gaps or openings may be tolerated depending on the requirements for shielding properties.

[0049] The fastening projections protrude outwardly from the housing shell to fasten the insulating shield contact housing for fastening the shield contact element, so that the shield contact housing presses against the fastening projections on both sides, fixing the shield contact housing and the shield contact element in position relative to each other.

[0050] Furthermore, the housing shell of the shielding contact element may include a fastening element formed from the housing shell. Similar to the recesses described above, the fastening element is a hollow body that is open on one side. In other words, the fastening element is formed perpendicular to the axial direction. This does not cause any gaps in the shielding, so that it does not affect the shielding properties, or only slightly. In other words, the goal is that the fastening elements are not open. They are deep-drawn without gap material or are broken open from the housing shell on one side without gaps. This eliminates gaps in the shielding coating. However, certain gaps or openings may be tolerated depending on the requirements for shielding properties.

[0051] A fastener protrudes inwardly from the housing shell to lock the insulating housing of the plug connection. For example, the housing of the plug connection includes a groove that cooperates with the fastener element to form a bayonet lock. A bayonet lock is a mechanical connection of two cylindrical parts in the longitudinal axis or mating direction that can be quickly made and released. The parts are connected by inserting them into each other and turning them in opposite directions, and separated by doing so again.

[0052] Of course, one outwardly projecting fastener and two opposite inwardly projecting fastener returns may be provided, see above for a description of these parts.

[0053] The present invention further comprises a shield contact system as described above having an insulating shield contact housing for receiving a shield contact element therein, the shield contact housing having an internal stop which, together with a recess formed in the shell housing, limits the axial freedom of movement of the shield contact element in the shield contact housing.

[0054] For further features of the shield contact housing, please refer to the above description.

[0055] Furthermore, the shield contact system may further comprise a housing of the plug connection, for further features of which see the above description.

[0056] Furthermore, the invention relates to a method for manufacturing a shielding contact element for shielding a plug connection, which method in particular serves to manufacture a shielding contact element as described above.

[0057] The procedure is as follows: Providing a sheet metal; forming at least one recess in the sheet; bending the sheet metal into an axially extending cylindrical housing shell for receiving a plug connector, the plug connector being adapted to connect to plug contact elements to form a plug connection, in particular the housing shell being adapted to contact a customer unit on one side and to receive a plug connector, e.g. a high voltage plug connector, on the other side; providing at least one ion axis direction extending contact lamella for forming an electrical connection between the housing shell and a shield for shielding the plug contact element; Including, The contact feet of the contact lamella are disposed in recesses formed in the housing shell and bring the housing shell into contact with the shield in the recesses.

[0058] In particular, sheet metal is a rolled metal product that is supplied as a thin sheet and has a width and length that are significantly greater than its thickness. Any material, particularly metal, used for shielding may be understood as sheet metal in this specification.

[0059] Thus, for example, the above-mentioned shield contact elements can be produced particularly easily - for further characteristics, see the above description.

[0060] The method comprises: The method may further include stamping at least one contact lamella from the provided sheet metal; By bending the sheet metal, a U-shaped connector is formed between the housing shell and the contact lamella, such that the contact feet are located in the recesses.

[0061] Thus, as already explained above, one-piece shield contact elements can be produced particularly easily.

[0062] The method may additionally or alternatively comprise a step of deep drawing, which comprises the following elements: Recess, two fastening projections formed from the housing shell, which protrude in particular outwardly from the housing shell after bending and are opposed to each other, in particular for fastening the shield contact housing; and A fastening element formed from the housing shell, which fastening element projects in particular inwardly from the housing shell after bending, in particular for locking the housing of the plug connection. At least one of the electrodes may be formed into a sheet.

[0063] The method may further include assembling at least one of a shield contact housing and a housing of a plug connection to form a shield contact system.

[0064] In order to better understand the invention, it will be described in more detail with reference to the example embodiments shown in the following drawings, in which the same parts are given the same reference numerals and the same component names. Moreover, some features or combinations of features in the various embodiments shown and described may correspond to independent inventive solutions or solutions according to the invention. [Brief description of the drawings]

[0065] [Figure 1] This is an example of a shielded contact system. [Diagram 2] 1 is an example of a shield contact element. [Diagram 3] FIG. 3 is a top view of the shield contact element according to FIG. 2; [Figure 4] FIG. 3 is a detailed view of element IV of the shield contact element in FIG. 2. [Diagram 5] FIG. 5 is a cross-sectional view and further detail of FIG. [Figure 6] FIG. 3 is a detailed view of element VI of the shield contact element in FIG. 2. [Figure 7] FIG. 7 is a cross-sectional view of FIG. [Figure 8] 3 is a top view and detail of the shield contact element according to FIG. 2; [Figure 9] FIG. 3 is a detailed view of element IX of the shield contact element in FIG. 2. [Figure 10] FIG. 10 is a cross-sectional view of FIG. [Figure 11] 3 is a top view and detail of the shield contact element according to FIG. 2; [Figure 12] 1 is another example of a shield contact system before assembly. [Figure 13] FIG. 13 is a cross-sectional view of the shield contact system in FIG. 12 after assembly. [Figure 14] FIG. 14 is a detailed view of element XIV of the shield contact system in FIG. 13 . [Figure 15] FIG. 14 is a detailed view of element XV of the shield contact system in FIG. 13. [Figure 16] 1 is another example of a shield contact system before assembly. [Figure 17] FIG. 17 is a top view of the shield contact system in FIG. 16. [Figure 18] FIG. 17 is a cross-sectional view of the shield contact system in FIG. 16. [Figure 19] 4 is another example of a shield contact element. [Figure 20] FIG. 20 is a detailed view of element XX of the shield contact element in FIG. 19. [Figure 21] FIG. 20 is a detailed view of element XXI of the shield contact element in FIG. 19. [Figure 22] FIG. 20 is a detailed view of element XXII of the shield contact element in FIG. 19. [Figure 23] 1 is another example of an alternative shield contact system before assembly. [Figure 24] FIG. 24 is another view of the shield contact system of FIG. 23 during assembly. [Diagram 25] FIG. 24 is another view of the shield contact system of FIG. 23 during assembly. [Figure 26] FIG. 26 is a cross-sectional view of the shield contact system in FIG. 25 after assembly. [Figure 27] FIG. 27 is a detailed view of element XXVII of the shield contact system in FIG. 26. [Figure 28] 4 is another example of a shield contact element. [Figure 29] A shield contact element having a gap. [Diagram 30] 29 is a thin plate for the shield contact element according to FIG. 28. [Diagram 31] It is a two-part shield contact element. [Diagram 32] A shield contact element having a gap. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0066] The invention will now be explained with the aid of the drawings. Figure 1 shows an example of a socket shielding contact system 10. Thus, for example, half of a system (not shown) is shown, which comprises the socket shielding contact system 10, which can come into contact with a counterpart. The shielding contact system comprises a shielding contact element 100 for shielding a plug (not shown) and a shielding contact housing 300 for holding the shielding contact element. A housing 400 of the plug connector holds the plug. The shielding contact element 100 may comprise or be made of a conductive material, in particular a metal. The shielding contact housing 300 and the housing 400 may contain or consist of an insulating material, in particular a plastic.

[0067] 2 shows an example of a shield contact element 100. The shield contact element 100 comprises a cylindrical housing shell 110 extending in an axial direction 114 for receiving a plug connector (not shown). The axial direction 114 thus corresponds to the mating direction of the plug connector. Upon plug insertion, the plug contact element (not shown) is connected to provide a plug connection. In the axial direction, the housing shell 110 has a first end 112 and an opposite, second, different end 116. For example, the plug contact element is used to mount a recess in a high voltage cable, through which the shield is routed or advanced, or in a customer contact element, e.g. a metallic control device or customer unit.

[0068] Furthermore, the shielding contact element 100 comprises a total of several contact lamellae, in this case for example thirteen contact lamellae, extending in the axial direction 114. FIG. 3, which shows a top view of the shielding contact element of FIG. 2, shows that the several contact lamellae are evenly distributed. It should be understood that one contact lamellae is sufficient to form an electrical connection between the housing shell 110 and a shield, not shown, for shielding the plug contact element. Thus, as a result, the housing shell and the shield perform the function of shielding the connector system, i.e. the plug connector and the header / socket, or of shielding the assembly, i.e. the connector system and the cable.

[0069] A space is provided between adjacent contact lamellae, for example, the contact lamellae are produced by stamping out the areas between the contact lamellae.

[0070] 2 and 3 in particular show that the first contact foot 122 of the contact lamella is arranged in a recess 130 formed in the housing shell 110. Here, as described above, the recess 130 is a bulge formed perpendicular to the axis 114. Thus, in the recess 130, the first contact foot 122 of the contact lamella can be in electrical contact with the housing shell 110. At this time, it can be in contact with a shield (not shown) via the contact lamella. It should be considered that in a non-contact state, the first contact foot 122 does not necessarily have to be in contact with the housing shell. It may be provided that the first contact foot 122 is permanently, removably or non-removably connected to the housing shell.

[0071] Further details of the contact lamella can be seen in FIG. 4, which is a detailed view of the recess 130 and contact lamella 120 of the shield contact element 100 of FIG. 2, and in FIG. 5, which is a cross-sectional view of FIG. 4 showing further details.

[0072] 5, a recess 130 is formed in the housing shell 110. In particular, the recess 130 is thereby formed in a direction 132 perpendicular to the axial direction 114 along which the housing shell 110 extends.

[0073] For example, as shown in Figure 5, the recess 130 extends from one axial end 112 of the cylindrical housing shell in the axial direction 114 toward the other end of the housing shell 110 (reference number 116 in Figure 2). In particular, the recess has a first axial end 134 and a second axial end 136, the second axial end being disposed between the axial ends 114, 116 of the housing shell 110.

[0074] At the axial end 112 of the cylindrical housing shell 110, elements are further provided for fixing the contact foot 122 of the contact lamella 120 to the housing shell 110. Alternatively, according to one example not shown, the contact foot 122 and the housing shell 110 may be of a two-part design or the contact foot 122 may be fixed to any part of the housing shell 110.

[0075] Here, the element may include an offset piece 150 arranged at the axial end 112. Furthermore, the element may comprise a U-shaped connector 140. In particular, the U-shaped connector 140 comprises two legs 142, 144 for fixing the contact lamella 120 to the housing shell 110 via the offset piece 150. In particular, the offset piece 150 is provided for offsetting the U-shaped connector 140 in the direction 132 of the recess 130. This makes it possible to optimize the bending radius of the U-shaped connector in order to save installation space. Here, a U-shaped connector is used in particular so that the contact lamella 120 and the housing shell can be designed as a single part.

[0076] Furthermore, in order to save installation space, it is provided that the offset piece 150 is connected to the recess 130 at the axial end 112 of the housing shell. In other words, the leg 142 is now connected to the axial end 134 of the recess 130 via the offset piece 150.

[0077] The second leg 144 of the U-shaped connector 140 holds the contact lamella 120. In particular, the U-shaped connector 140 may be formed by bending a sheet of metal. The legs 142, 144 are opposite each other. An intermediate section, e.g. a bent section, connects the opposite legs.

[0078] Furthermore, from Fig. 5 it can be seen that the contact lamella 120 may be mounted in the U-shaped connector and may comprise a first contact foot 122, a second contact foot 124 and a third contact foot 126. Here, the second contact foot 124, which is arranged between the first and the third contact foot, projects from the housing shell 110 in a direction opposite to the direction 132 of the recess 130. The second contact foot 124 thus performs the function of a form-lock to the shield 210. The embodiment shown here has the advantage that the first contact foot 122 is protected during mating. However, according to one example, not shown, the second contact foot may also be arranged at the axial end of the contact lamella.

[0079] 5, the third contact foot 126 may be arranged, for example at an axial end, in a recess 130. This allows the second contact foot to be pressed particularly efficiently against the shield.

[0080] The dashed line 11 in Fig. 5 shows how the current path, also called the conductive path, extends between the shield 210 and the housing shell 110. In particular, the arrangement of the first contact foot 122 in the recess allows the current path to be undisturbed. In other words, the conductive path, for example to ground the shield, does not have to go through the elements 140, 150 to contact the shield 210 with the housing shell 110. This reduces the overall resistance and improves the shielding properties.

[0081] Furthermore, Fig. 2 shows that the housing shell 110 may include a fastening protrusion 160. The fastening protrusion 160 is described in Figs. 6 to 8. Fig. 6 shows that the fastening protrusion 160 protrudes outward from the housing shell 110, so that it can be fastened to a shield contact housing. Fig. 7 shows a cross-sectional view of the fastening protrusion.

[0082] 8 shows that two opposite fastening projections 160 can be provided, where for example the angle between the fastening projections is 170°, so that the fastening projections 160 can be fastened particularly well to the shield contact housing.

[0083] Furthermore, Fig. 2 shows that the housing shell 110 may include a fastening element 190. The fastening element 190 is described in Figs. 9 to 11. Fig. 9 shows that the fastening element 190 projects inwards from the housing shell 110, thereby allowing to lock the housing of the plug connection. Fig. 10 shows a cross-sectional view of the fastening element.

[0084] 9 shows that two opposing fastening elements 190 can be provided, where, for example, the angle between the fastening elements is 180°.

[0085] 12 illustrates an example of a shield contact system 10 prior to assembly. The shield contact system 10 includes a shield contact element 100 received in a shield contact housing 300. For a description of the shield contact element 100 and the shield contact housing 300, please refer to the above description.

[0086] Figure 13 shows a cross section of the shield contact system of Figure 12 after assembly. In particular, shield contact housing 300 allows the above-mentioned recess to be provided at only one end of shield contact element 100. At end 116, for example, the above-mentioned recess can be omitted since shield contact element 100 protrudes into a device (not shown), whereby the device housing provides the necessary shielding.

[0087] Figure 14 shows a detailed view of element XIV of the shield contact system in Figure 13. In particular, the shield contact housing has a stop 310 on the inside. Thus, the stop 310 protrudes perpendicularly to the mating direction. Thus, the stop 310 can cooperate with the recess 130 formed in the housing shell so that the axial movement freedom of the shield contact element 100 in the shield contact housing 300 is limited.

[0088] Fig. 15 shows a detailed view of element XV of the shielding contact system in Fig. 13. Thus, the fastening projection can fasten the shielding contact element to the shielding contact housing. Furthermore, an opening (not shown) may be provided in the shielding contact housing. Then, the fastening projection is locked in the opening by inserting the housing of the plug connection part (not shown).

[0089] 16 is another example of a shield contact system prior to assembly. The shield contact system 10 includes a shield contact element 100 that is received in a shield contact housing 300. Additionally, the shield contact system includes a housing 400 for the plug connection.

[0090] Please refer to the above description for a description of the shield contact element 100 and the shield contact housing 300. Although not shown here, the shield contact system may include only the shield contact element 100 and the housing 400 of the plug connection.

[0091] In particular, the housing 400 of the plug connection includes a groove 10 on the outside of the housing that extends axially from an axial end of the housing 400 and perpendicular to the axial direction at a central portion of the housing. Additionally, Fig. 17 shows a top view of the shield contact system of Fig. 16 with the arrow indicating the direction of rotation for locking the housing 400 to the shield contact elements. Fig. 18 is a cross-sectional view of the assembled shield contact system of Fig. 16.

[0092] Another example of a shield contact element 100' is shown in FIG. , tube The housing shell 110' differs from the shield contact element 100 in that the bottom surface of the housing shell 110' is rectangular, rather than circular as in FIGS.

[0093] The contact lamella 120 and the elements for connecting the contact lamella 120 to the housing shell 110' are the same or similar. For an explanation, please refer to the figures above, in particular to figure 5. From figure 19 it can be seen that, whereas in figures 1 to 18 the recesses are open to the inside, here the recesses are open to the outside. An alternative orientation of the recesses is an example not shown in the figures.

[0094] 19 further shows that the housing shell 110' has an opening extending axially from the end 112'. This opening may be provided according to external requirements. Shielding may be provided by further parts not shown.

[0095] Figure 20 shows a detailed view of element XX of the shield contact element in Figure 19. This is a further embodiment of the fastening highlighting already described in Figure 6. Here, the shape is, for example, elliptical.

[0096] Figure 21 shows a detailed view of element XXI of the shield contact element of Figure 19. It illustrates a further embodiment of the fastening element as described in Figure 9. Unlike Figure 9, the fastening element 190' of Figure 22 does not lock by elastically deforming the housing 400' shown in Figure 25.

[0097] Figure 22 is a detailed view of element XXII of the shielding contact element of Figures 2 and 19. This is an example of a contact portion for securing the shielding contact element 100, 110' to a housing, for example as discussed above with respect to Figure 13. Notably, a gap may be provided here since the housing provides the necessary shielding.

[0098] 23 illustrates another example of a shield contact system 10' prior to assembly. The shield contact system 10' includes a shield contact element 100' received in a shield contact housing 300'. For a description of the shield contact element 100', please refer to the above description of the shield contact housing 300. For a description of the shield contact housing 300', please refer to the above description of the shield contact housing 300.

[0099] FIG. 24 shows another view of the shield contact system 10' of FIG. 23 during assembly.

[0100] 25 is another example of a shield contact system 10' prior to assembly. The shield contact system 10' includes a shield contact element 100' received in a shield contact housing 300'. Additionally, the shield contact system includes a plug connection housing 400'.

[0101] Please refer to the above description for the description of the shield contact element 100' and the shield contact housing 300'. Although not shown here, the shield contact system may include only the shield contact element 100' and the plug connection housing 400'.

[0102] In particular, housing 400' is cylindrical with a rectangular base and shield contact housing 300' has a cylindrical opening with a rectangular base, such that the non-rotationally symmetric geometry does not allow the parts to pivot.

[0103] FIG. 26 is a cross-sectional view of the shield contact system of FIG. 25 after assembly.

[0104] Fig. 27 is a detailed view of element XXVII of the shield contact system in Fig. 26. In particular, Fig. 27 shows that the housing 400' is not elastically deformable in the area of ​​the clasp element 190'. Thus, the housing 400' and the shield contact element 100' are inseparably connected.

[0105] According to another example, as shown in FIG. 28, an orientation protrusion 180 may be provided at the axial end of the housing shell. The orientation protrusion has a shape similar to the fastening protrusion described above. The difference is that a number of orientation protrusions are provided along the axial direction. They are formed similarly to the fastening members, see the above description. Although not shown, the orientation protrusion may be formed by an element extending in the axial direction.

[0106] Although not shown, the housing shells 110, 110' may be formed by bending a sheet of metal into an axially extending cylindrical housing shell for receiving a plug connector.

[0107] Even if not shown in the figures, at least one or all of the contact lamellae may be produced by stamping.

[0108] Although not shown in the figures, at least the recesses, the fastening projections, the fastening elements or the orientation projections may be formed by deep drawing, in other words the housing shell is continuous in these areas. [Explanation of symbols]

[0109] 10,10' Shielded Contact System 11 Current Path 100 Shield Contact Elements 110, 110' Housing Shell 112, 112 first end 114 Axial 116 Second End 120, 1120 Contact Lamella 122 First contact foot 124 Second Contact Foot 126 Third Contact Foot 130 Recess 132 Orientation of recess 130 134, 136 Axial ends of recess 130 140 U-shaped connector 142, 144 Legs 150 Offset Piece 160 Fastening protrusion 180 Orientation features 190, 190' fastening 210 Shield 300 Shielded Contact Housing 310 Stopper 400, 400' Housing 410 Groove

Claims

1. A shielding contact element (100) for shielding a plug connection, comprising: The shield contact element (100) comprises: - a cylindrical housing shell (110) extending in an axial direction (114) for receiving a plug connector, said plug connector being adapted to connect to plug contact elements to form said plug connection; at least one contact lamella (120) extending in said axial direction (114) for forming an electrical connection between said housing shell (110) and a shield (210) for shielding said plug contact element; - a U-shaped portion (140) having two legs (142, 144) for fixing said contact lamella (120) to said housing shell (110), said contact lamella (120), said U-shaped portion (140) and said housing shell (110) being an integral part; A first contact foot (122), which is a free end of the contact lamella (120), is disposed in a recess (130) formed in the housing shell (110), a second contact foot (124) of the contact lamella (120) connected to the first contact foot (122) is configured to protrude away from the recess (130) of the housing shell (110) and to be able to contact the shield (210); The housing shell (110) and the shield (210) are electrically connected to each other by contacting the second contact foot (124) with the shield (210), one leg (142) of the two legs (142, 144) of the U-shaped portion (140) is connected to the recess (130) of the housing shell (110); the other leg (144) of the two legs (142, 144) of the U-shaped portion (140) is connected to a third contact foot (126) of the contact lamella (120); the second contact foot (124) is disposed between the first contact foot (122) and the third contact foot (126); Shield contact element.

2. The recess (130) extends from one axial end (112) of the housing shell in the axial direction (114) to the other end (116) of the housing shell (110). The shield contact element of claim 1 .

3. The contact lamella (120) is an elastically deformable spring element. The shield contact element of claim 1 .

4. The second contact foot (124) is adapted to press against the shield (210). The shield contact element of claim 1 .

5. The one leg (142) of the U-shaped portion (140) is fixed to the axial end (112) of the housing shell (110). The shield contact element of claim 1 .

6. A plurality of said contact lamellae (120), A space is provided between adjacent contact lamellae. The shield contact element of claim 1 .

7. The plurality of contact lamellae are manufactured by stamping such that areas between the plurality of contact lamellae are scraped away. The shield contact element of claim 6 .

8. The housing shell (110) includes two opposing catch projections (160) formed therefrom; The fastening projection (160) projects outwardly from the housing shell (110) for fastening a shield contact housing (300). The shield contact element of claim 1 .

9. The housing shell (110) comprises a fastening element (190) formed from the housing shell (110), the fastening element (190) protrudes inwardly from the housing shell (110) for locking the housing (400) of the plug connection; The shield contact element of claim 1 .

10. A shield contact system having an insulating shield contact housing (300) for receiving therein a shield contact element (100) according to any one of claims 1 to 9, the insulating shield contact housing (300) has an internal stop (310) which, together with the recess (130) formed in the housing shell (110), limits the axial freedom of movement of the shield contact element (100) in the insulating shield contact housing (300); Sealed contact system.

11. 1. A method for manufacturing a shielding contact element for shielding a plug connection, the method comprising the steps of: Providing a sheet metal; forming at least one recess in said sheet metal; bending the sheet metal into an axially extending tubular housing shell for receiving a plug connector, the plug connector for connecting to plug contact elements to form the plug connection; providing at least one axially extending contact lamella for forming an electrical connection between the housing shell and a shield for shielding the plug contact element; Including, a contact foot of the contact lamella is disposed in the recess formed in the housing shell to bring the housing shell into contact with the shield at the recess; method.

12. further comprising stamping the at least one contact lamella from the provided sheet metal; by bending the sheet metal, a U-shaped connector is formed between the housing shell and the contact lamella, such that the contact foot is located in the recess. The method of claim 11.

13. The following elements: - the recess; - two fastening projections formed from the housing shell, which after bending are directed outwardly from the housing shell and are opposed to each other, for fastening to a shield contact housing; and a deep drawing step for forming at least one fastening element in the sheet metal, the fastening element being formed from the housing shell, the fastening element protruding inwards from the housing shell after bending, the fastening element being for locking the housing of the plug connection.

13. The method of claim 11 or 12, further comprising:

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